JP5316136B2 - Internal processing inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner surface inspection device that facilitates inspecting the inner surface of a tubular member such as a long shaft after cutting processing. <P>SOLUTION: The inner surface inspection device for processing the inner surface 2 of the tubular member 1 includes a fixing device 10 for fixing the tubular member 1, processing machines 20, 30 and 40 for processing the inner surface 2 of the tubular member 1 fixed by the fixing device 10, and an inner surface inspection head 15 for detecting the inner surface 2 processed by the processing machines while it is positioned in an internal space of the tubular member partitioned in the inner surface 2. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to inner surface machining inspection apparatus including an inner surface inspection equipment to inspect for processing the inner surface of the tubular member. The tubular member is, for example, a long shaft such as a long shaft connecting a turbine of a jet engine and a fan or a compressor.

  In order to connect a turbine of a jet engine and a fan or a compressor, an elongated hollow shaft called a long shaft (for example, a total length of about 3 m, a main portion having an outer diameter of 10 to 20 cm) is used. Such a long shaft is thin for weight reduction and requires high rotation balance accuracy because it rotates at high speed together with the turbine. For this reason, it is difficult to apply a normal inner surface processing apparatus (for example, a boring machine), and a processing step as illustrated in FIG. 7 is applied.

That is, (A) after roughing the outer surface of the long shaft 51, (B) sulfur 53 is cast into the gap between the core bar 52 and the long shaft 51, and (C) a boring bar having substantially the same diameter as the core bar 52 after solidification of sulfur. 54, and (D) means for machining the inner surface with the tool 56 of the tip 55 while pulling out the boring bar 54.
By such means, the tip portion 55 of the boring bar 54 can be supported by the solidified sulfur 53, the center tool of the tip tool 56 is prevented, and the inner surface is machined together with the sulfur 53, thereby processing a long shaft with less inner diameter deflection. can do.

  Patent Document 1 is disclosed as an inner wall copying apparatus related to the present invention. For example, Patent Document 2 has already been disclosed as the above-described long shaft inner surface processing apparatus.

  Patent Document 1 discloses a “cutting device for copying the inner wall of a pipe”. When a cutting blade is applied to the cutting of the inner surface of a pipe such as a steel pipe, even if the inner diameter of the steel pipe is not a perfect circle, the thickness of the pipe is constant. The purpose is to enable cutting and finish to a good surface roughness.

  Therefore, as shown in FIGS. 8A and 8B, the present invention includes a rotary drive device 69 that holds one end of the tube A and rotates it around its axis, and a boring bar that can advance and retreat in the axial direction of the tube. 61 and a boring head 62 having a boring head 62 provided with a cutting blade 63 attached to the tip of the boring bar and insertable into the tube, the boring head 62 has its tip Mounting bush 67a having a spring provided radially inward from the peripheral surface on the side, holding body 66c supported by the spring, and fixed to the outer end of the holding body so as to be movable in and out and to the outside of the boring head. One movable shoe 66 biased toward the movable shoe, and one fixed shoe 6 projecting from the peripheral surface of the boring head provided in the vicinity of the cutting blade 63 at a position opposite to the movable shoe. When, it is provided with a and one fixed shoe 65 having the same height provided at an intermediate position between the movable shoe 66 in the direction of rotation of the rear side of the tube of the fixing shoe.

  The “long shaft inner surface processing apparatus” of Patent Document 2 aims to prevent idling due to sulfur slip without using sulfur anti-slip paint.

  Therefore, as shown in FIG. 9, the present invention includes a shaft rotating device 72 that rotates the long shaft 71 around the axis ZZ, and a tool that moves the processing tool 74 along the axis in the long shaft. And a moving device 76. The processing tool 74 includes a hollow tube 89 extending along the axis of the long shaft, an expansion / contraction rod 82 penetrating the inside thereof, a knurling support portion 84 having a knurling 83, a knurling support portion, and a tip of the hollow tube. It comprises a parallel link 85 that connects the parts, and an expansion / contraction link 86 that connects the knurling support part and the tip of the rod.

Japanese Examined Patent Publication No. 7-246, “Copying device for inner wall of pipe” Japanese Patent Application Laid-Open No. 10-202434, “Long shaft inner surface processing apparatus”

  FIG. 1 is a schematic view of a long shaft to which the present invention is applied. This long shaft 1 has already been balanced, and the inner surface 2 (preparation hole) is machined in a perfect circle and concentric with respect to the axis, and it is necessary to perform boring processing accurately following this pilot hole 2. .

  In this case, there were the following problems (1) to (3).

(1) It was difficult to inspect the state of the long shaft inner surface 2 after cutting (for example, the roughness of the inner surface 2 or the shape of the inner surface 2). When inspecting and measuring the inner surface 2 of the long shaft, the long shaft 1 is long. Therefore, it is necessary to cut the long shaft 1 at an intermediate portion away from the end portion. Since the cut long shaft 1 cannot be made into a product, it is necessary to perform the measurement before mass production. In addition, it is necessary to prepare a dedicated jig for measuring the long shaft inner surface 2. Thus, the inspection of the state of the long shaft inner surface 2 was not easy. Moreover, the inspection of the inner surface of a tubular member other than the long shaft is not easy.

(2) The long shaft 1 shown in FIG. 1 has a pilot hole 2 having a small diameter (96 mm and 79 mm in this example) at both ends and an enlarged diameter (130 mm in this example) at the middle part. This is not applicable because the machining head is too large to be inserted into the hole. Further, since the tool reaction force is received by the rigidity of the boring bar, the ratio of the diameter to the length cannot be reduced. Furthermore, since the blade drive mechanism and the coolant supply mechanism are disposed inside the boring bar, the diameters thereof cannot be reduced.

(3) On the other hand, the device of Patent Document 2 requires a large number of the above-described processing steps such as casting sulfur into the long shaft 1, and in the case of performing boring processing of a balanced shaft, Although it is necessary to perform boring processing accurately by copying, since the inner diameter is processed based on the outer diameter in the conventional technology, accurate copying cannot be performed.

The present invention has been developed to solve the above-described problems (1) to (3).
That is, a first object of the present invention is to provide an inner surface hole inspecting apparatus including the inner surface inspection equipment that the inner surface can be easily inspected tubular member, such as a long shaft after cutting.
A second object of the present invention is a machining head that is inserted into a long shaft, for example, an elongated long shaft having a pilot hole of about 100 mm at both ends, a pilot hole of an intermediate portion of about 130 mm, and a total length of about 3 m. The maximum diameter of the long shaft can be made thinner than the pilot holes at both ends, the machining accuracy is prevented from being lowered due to the tool reaction force during machining, the machining impossible range is minimized, and the inner surface of the long shaft is copied to the pilot holes. Therefore, the inner surface can be processed accurately, and the inner surface of the long shaft after cutting can be easily inspected.

According to a reference example , an inner surface inspection apparatus for inspecting a processed inner surface of a tubular member,
A fixing device for fixing the tubular member;
An inner surface inspection apparatus comprising: an inner surface inspection head that inspects the processed inner surface in a state where the tubular member is located in an inner space of the tubular member.

  As the configuration of the inner surface inspection head, the following (A) to (D) can be adopted.

(A) The inner surface inspection head is
A radially moving member movable in a radial direction of the tubular member;
A driving device for moving the radial movement member in the radial direction;
A contact detection sensor that detects contact between the radially moving member and the inner surface and outputs a signal to that effect;
A distance measuring unit that measures a distance moved in the radial direction from the initial position to a contact position where the radial movement member contacts the inner surface, based on the signal;
A relative rotation device that rotates the inner surface inspection head relative to the tubular member around an axis of the tubular member is provided.

In this configuration, the distance from the initial position to the contact position can be acquired as the inner surface position by the above-described operations of the contact detection sensor and the distance measurement unit.
Moreover, since the rotation position of the inner surface inspection head with respect to the tubular member can be changed by the relative rotation device, the inner surface position can be acquired for each rotation position. That is, the change in the inner surface position in the rotation direction can be acquired as the inner surface shape.
In this way, the inner surface shape of the tubular member can be easily inspected.

(B) The inner surface inspection head has a laser rangefinder that measures the distance to the inner surface based on the laser reflected by the inner surface by irradiating the inner surface with a laser.
A relative rotation device that rotates the inner surface inspection head relative to the tubular member around an axis of the tubular member is provided.

In this configuration, the distance from the laser distance meter to the inner surface can be acquired as the inner surface position by the laser distance meter.
Moreover, since the rotation position of the inner surface inspection head with respect to the tubular member can be changed by the relative rotation device, the inner surface position can be acquired for each rotation position. That is, the change in the inner surface position in the rotation direction can be acquired as the inner surface shape.
In this way, the inner surface shape of the tubular member can be easily inspected.

(C) The inner surface inspection head includes an imaging device that images the inner surface.

  In this configuration, the image data of the inner surface can be acquired by the imaging device. Based on this image data, the surface roughness of the inner surface can be inspected.

(D) The inner surface inspection head includes:
A radially moving member movable in a radial direction of the tubular member;
A driving device for moving the radial movement member in the radial direction;
A contact detection sensor that detects contact between the radially moving member and the inner surface and outputs a signal to that effect;
A distance measuring unit that measures a distance moved in the radial direction from the initial position to a contact position where the radial movement member contacts the inner surface, based on the signal;
A plurality of sets of the radial direction moving member, the driving device, the contact detection sensor, and the distance measuring unit are provided, and the plurality of sets of the radial direction moving members are different from each other in the circumferential direction around the axis of the tubular member. Is provided.

  In this configuration, since the inner surface position of the tubular member can be acquired by a plurality of radially moving members in the circumferential direction, the change in the inner surface position in the circumferential direction can be acquired as the inner surface shape. In this way, the inner surface shape of the tubular member can be easily inspected.

(E) The inner surface inspection head includes a laser distance meter that measures a distance to the inner surface based on the laser reflected by the inner surface by irradiating the inner surface with a laser.
A plurality of the laser distance meters are provided in the circumferential direction around the axis of the tubular member.

  In this configuration, since the inner surface position of the tubular member can be acquired by a plurality of laser distance meters in the circumferential direction, the change in the inner surface position in the circumferential direction can be acquired as the inner surface shape. In this way, the inner surface shape of the tubular member can be easily inspected.

According to the present invention, there is provided an inner surface processing inspection apparatus comprising a processing machine for processing the inner surface of the tubular member, and the inner surface inspection apparatus,
The tubular member is a long shaft,
The processing machine
An inner surface cutting tool that can be inserted axially into the pilot hole of the long shaft and movable in the radial direction, and has a function of aligning the rotation center of the cutter with the axis of the pilot hole; and A machining head movable in the axial direction;
A head support device connected to the machining head through a pilot hole from one end of the long shaft and moving the machining head in the axial direction;
A blade rotation device connected to a machining head through a pilot hole from the other end of the long shaft and rotating the blade around an axis;
The processing head has an inner surface copying head and a cutter head,
The inner surface copying head has a function of making its axis coincide with the axis of the pilot hole and is moved in the axial direction by the head support device,
The cutter head is attached to the inner surface copying head, and is supported by the inner surface copying head so as to be rotatable about its axis, and is rotationally driven by the blade rotating device.
An inner surface machining inspection device is provided, wherein the inner surface inspection head inspects the inner surface in a state of being attached to the inner surface copying head instead of the blade head.

According to a preferred embodiment of the present invention, the inner surface copying head includes a cylindrical main body having a diameter that can be inserted in the pilot hole of the long shaft in the axial direction, and an axial distance between the main body and the main body. A pair of internal chucks positioned and a pair of pistons provided in the main body between the internal chucks so as to be movable in the opposite axial direction;
Each inner surface chuck is in contact with a pilot hole in the long shaft, and can rotate in the axial direction. The inner surface chuck can be expanded and contracted radially and radially, and has a tapered surface inclined with respect to the axis. And a guide member
Each of the pistons has a tapered surface that slides in synchronization with the tapered surface of three or more guide members at one axial end thereof.
The main body has a hydraulic flow path for supplying a liquid between the pair of pistons from a hollow hole of a boring bar and applying a hydraulic pressure.

In the present invention described above, the machining head can be reduced in size and diameter can be reduced by supplying the driving source necessary for the machining head from two shafts arranged on both sides in the axial direction.
That is, the head support device and the blade rotating device connected to the processing head through the pilot hole of the long shaft perform axial movement and rotational driving of the processing head having the cutting tool for inner surface processing. It has a movable inner surface machining tool, and it only needs to have the function of supporting the tool so that the center of rotation of the tool coincides with the axis of the pilot hole and is movable in the axial direction. It can be made thinner than the pilot holes at both ends of the shank shaft.

In addition, a chuck is provided on the machining head to release the machining reaction force in the radial direction to the workpiece, and the shaft (boring bar) takes charge of the reaction force in the rotation direction, thereby realizing a long and narrow diameter.
That is, with the configuration in which the machining head has an inner surface copying head, the diameter is increased radially by the pressure of the liquid supplied from the head support device, and the axis is aligned with the axis of the pilot hole and is supported so as to be movable in the axial direction. By doing so, the machining head can be further miniaturized and the tool reaction force at the time of machining is received by the inner surface of the long shaft, so that it is possible to prevent a reduction in machining accuracy due to the tool reaction force.

In addition, the inner surface inspection head is attached to the inner surface copying head by replacing with the cutter head, and in this state, the inner surface of the pilot hole can be inspected by the inner surface inspection head, so that the inner surface of the long shaft after cutting can be easily inspected. it can.
That is, the inner surface inspection head attached to the inner surface copying head can be moved in the axial direction of the long shaft by the head support device together with the inner surface copying head inside the long shaft. The inner surface of the long shaft can be inspected in a range. Therefore, it is not necessary to cut the long shaft in order to inspect and measure the inner surface of the long shaft. Further, since the inner surface of the long shaft can be inspected with the long shaft fixed to the long shaft fixing device, it is not necessary to prepare a dedicated jig for measuring the long shaft inner surface 2. Thus, the state of the long shaft inner surface 2 can be easily inspected.

According to the present invention, there is provided an inner surface processing inspection apparatus comprising a processing machine for processing the inner surface of the tubular member, and the inner surface inspection apparatus,
The tubular member is a long shaft,
The processing machine
A machining head which has an inner surface cutting tool which can be inserted in the pilot hole of the long shaft in the axial direction and is movable in the radial direction, and which has a function of aligning the rotation center of the blade with the axis of the pilot hole; ,
An axial movement device connected to a machining head through a pilot hole from one end of the elongated shaft, and moving the machining head relative to the elongated shaft in the axial direction of the elongated shaft;
A relative rotation device that is connected to a machining head through a pilot hole from the other end of the long shaft, and rotates the cutter relative to the long shaft around the axis of the long shaft;
The processing head has an inner surface copying head and a cutter head,
The inner surface copying head has a function of making the axis line coincide with the axis line of the pilot hole,
The cutter head is attached to the inner surface copying head, is supported by the inner surface copying head and is relatively rotated with respect to the long shaft by the relative rotation device,
An inner surface machining inspection device is provided, wherein the inner surface inspection head inspects the inner surface in a state of being attached to the inner surface copying head instead of the blade head.

Even with this configuration , the same effect as described above can be obtained.

  According to the configuration of the present invention, the inner surface of the tubular member can be easily inspected. When the tubular member is a long shaft, the machining head can be reduced in size and diameter, and the inner surface of the long shaft after cutting can be easily inspected.

It is a schematic diagram of the long shaft which this invention makes object. 1 is an overall configuration diagram of a long shaft inner surface machining inspection apparatus according to the present invention. It is an expanded sectional view of the processing head of FIG. It is a perspective view of a radial direction moving member and an axial direction moving member. The case where the blade head is replaced with the inner surface inspection head from the state of FIG. 3 is shown. It is explanatory drawing of the inner surface processing method of a long shaft. It is explanatory drawing of the conventional process of a long shaft. 1 is a configuration diagram of a “copier cutting device for an inner wall of a pipe” of Patent Document 1. FIG. 1 is a configuration diagram of a “long shaft inner surface processing apparatus” of Patent Document 2. FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIG. 1, the inner surface machining inspection apparatus according to the present invention processes the inner surface of an elongate long shaft 1 having a pilot hole 2 that passes through in the axial direction and is symmetric with respect to the axis along the pilot hole 2. This is an inner surface processing inspection apparatus.
Moreover, the inner surface processing inspection apparatus of this invention has the inner surface inspection apparatus mentioned later.

  FIG. 2 is an overall configuration diagram of the inner surface processing inspection apparatus according to the embodiment of the present invention. As shown in this figure, the inner surface machining inspection apparatus of the present invention includes a long shaft fixing device 10, a machining head 20, a head support device 30, and a blade rotating device 40.

  The long shaft fixing device 10 includes a horizontally extending main frame 11, a pair of chuck devices 12, 13 that are provided so as to be movable along the upper surface of the main frame 11, and concentrically hold both ends of the long shaft 1, and It consists of a plurality of support fittings 14 arranged at intervals along the upper surface of the main frame 11 and supporting the long shaft 1. With the long shaft fixing device 10 configured in this way, the long shaft 1 can be fixed so as not to bend.

The processing head 20 has a dimension that can be inserted in the axial direction from at least one of the pilot holes 2 of the long shaft 1.
Further, the machining head 20 has a cutting tool 29 for inner surface processing that can move in the radial direction, a function of making the rotation center of the cutting tool 29 coincide with the axis of the pilot hole 2 and supporting the cutting tool 29 so as to be movable in the axial direction. Have The detailed structure of the processing head 20 will be described later.

  The head support device 30 includes a hollow cylindrical elongated boring bar 32, a bar moving device 34, and a hydraulic pressure supply device 36.

  One end (the left end in the figure) of the hollow cylindrical elongated boring bar 32 is connected to the machining head 20 (an inner surface tracing head described later) and extends horizontally in the axial direction. The boring bar 32 has a hollow hole 32a (see FIG. 3) penetrating along the axis.

The bar moving device 34 includes a moving member 34a that grips the rear end portion (right end portion in the drawing) of the boring bar 32 in a non-rotatable manner, a screw screw 34b that is screwed with the moving member 34a and moves it in the axial direction, A rotary drive device 34c (for example, a motor with a speed reducer) that rotationally drives the screw screw 34b about the axis, and the machining head 20 is moved in the axial direction via the screw screw 34b and the boring bar 32 by the rotary drive device 34c. It is supposed to let you.
In addition, in the bar moving apparatus 34, you may employ | adopt the other structure which can move the boring bar 32 to an axial direction instead of the structure which has the moving member 34a, the screw screw 34b, and the rotation drive device 34c. For example, a configuration in which a rack and pin-on mechanism, a belt mechanism or a chain mechanism is driven by a rotary motor to move the boring bar 32 in the axial direction, or a configuration in which the boring bar 32 is directly moved in the axial direction by a linear motor is adopted. May be.

  With the configuration described above, one end (left end) of the boring bar 32 is connected to the machining head 20 from one end of the long shaft 1 through the pilot hole 2, and the machining head 20 can be moved in the axial direction by the movement of the boring bar 32. .

  The hydraulic pressure supply device 36 includes a hydraulic pressure unit 36a and a hydraulic hose 36b connected to the end (right end in the figure) of the boring bar 32, and the machining head 20 is passed through the hollow hole 32a (see FIG. 3) of the boring bar 32. A liquid for operating is supplied to apply pressure (described later).

  The blade rotating device 40 includes a hollow cylindrical elongated rotating rod 42, a blade driving rod 44, a rotation driving device 46, and an axis moving device 48.

The rotating rod 42 is a hollow cylindrical elongated member, and one end (right end in the figure) is connected to the machining head 20 (a blade head described later) and extends horizontally in the axial direction.
The blade drive rod 44 extends in the axial direction through the hollow hole of the rotary rod 42 and is connected to an axially moving member 28 (see FIG. 3) of the machining head 20 described later so as not to be relatively rotatable.
The rotation drive device 46 includes a horizontal movement table 46a provided so as to be horizontally movable along the upper surface of the main frame 11, and a rotation drive chuck 46b installed on the horizontal movement table 46a. The horizontal moving table 46a has a horizontal rail (not shown) and a guide guided by the horizontal rail, and moves horizontally with low resistance. The rotation drive chuck 46b includes a chuck device that holds the shaft end portion (left end portion in the drawing) of the rotation rod 42 and a rotation drive mechanism that rotationally drives the chuck device about the axis.

  With the configuration described above, the blade rotating device 40 drives the rotary rod 42 connected to the machining head 20 through the pilot hole 2 from the other end (the left end in the figure) of the long shaft 1 to rotate around the axis, and the machining head 20. The horizontal movement table 46a can be moved in the axial direction following this movement.

The shaft moving device 48 is a linear motion actuator or a ball screw installed on the horizontal moving table 46 a, moves in the axial direction together with the rotation driving device 46, and moves the blade driving rod 44 relative to the rotating rod 42. It is designed to move in the direction.
Further, the shaft moving device 48 has a rod support portion that rotatably supports the blade drive rod 44. For this reason, the blade drive rod 44 can be rotated together with an axially moving member 28 described later.

FIG. 3 is an enlarged cross-sectional view of the machining head 20 of FIG. 2 used in the present invention.
The inner surface copying head 21 has a function of making its axis line coincide with the axis line of the pilot hole and is moved in the axial direction by the head support device 30.
In this example, the inner surface copying head 21 includes a cylindrical main body 23 to which a boring bar 32 is coupled, a pair of inner surface chucks 24 provided at positions spaced in the axial direction of the main body 23, The main body 23 has a pair of pistons 25 provided at positions spaced apart in the axial direction.
The cylindrical main body 23 has a diameter that can be inserted into the pilot hole 2 of the long shaft 1 in the axial direction.

  Each inner surface chuck 24 includes a rotating rotor 24a that can roll in the axial direction and a guide member 24c that is provided in the main body 23 so as to be movable in the radial direction and moves the rotating rotor 24a forward and backward in the radial direction. Has more than 3 sets in the direction. In the configuration example of FIG. 3, in each inner surface chuck 24, three sets of the rotary rotor 24a and the guide member 24c are arranged at intervals of 120 degrees. Each guide member 24c has a tapered surface 24b inclined with respect to the axis.

The pair of pistons 25 is provided in the main body 23 between the pair of inner surface chucks 24 so as to be movable in the opposite axial direction.
Each piston 25 has a tapered surface 25a having the same inclination as the tapered surface 24b of each guide member 24c at one axial end thereof. The tapered surface 25a may be a flat surface.

  Further, the main body 23 has a hydraulic flow path 23 a that supplies liquid between a pair of pistons 25 through a hollow hole 32 a formed in the boring bar 32 to apply hydraulic pressure.

  With the above-described configuration, the pair of inner surface chucks 24 are radially expanded by the liquid supplied from the hydraulic pressure supply device 36 to the inner surface copying head 21 so that the axis thereof coincides with the axis of the pilot hole 2 and the rotary rotor 24a. Thus, the inner surface copying head 21 can be supported so as to be movable in the axial direction.

  Further, even when the pilot hole 2 is a tapered hole, the pair of pistons 25 move independently, so that the pair of inner surface chucks 24 are radially expanded independently of each other and the axis thereof is the axis of the pilot hole 2. Can match.

  The cutter head 22 is attached to the inner surface copying head 21 and is supported by the inner surface copying head 21 so as to be rotatable about its axis, and is rotated by a blade rotating device 40.

The blade head 22 has a cylindrical sub-body 26, a radial movement member 27, and an axial movement member 28.
The cylindrical sub main body 26 is supported by the inner surface copying head 21 through a bearing 26a so as to be rotatable about its axis. In this example, the bearing 26a is incorporated in a side surface facing the radial direction at the axial end portion 26b of the cylindrical sub-body 26. Further, as shown in FIG. 3, the cutter head 22 is attached to the inner surface copying head 21 by inserting the axial end portion 26 b into the recess portion 23 b formed in the main body 23 and recessed in the axial direction as shown in FIG. 3. .
The radial movement member 27 has a blade 29 at the distal end in the radial direction, and has inclined teeth 27a inclined with respect to the axis (that is, the rotation center of the blade head 22).
The axial direction moving member 28 has inclined teeth 28 a that mesh with the inclined teeth 27 a of the radial direction moving member 27. The inclined teeth 28a are inclined in the same direction as the inclined teeth 27a.
FIG. 4 is a perspective view of the radial direction moving member 27 and the axial direction moving member 28. As described above, the axially moving member 28 has the semicircular portion 28b, and the inclined teeth 28a are formed on the plane side surface of the semicircular portion 28b. Further, in the radial direction moving member 27, the inclined tooth 27a described above is formed on the surface of the axial direction moving member 28 facing the inclined tooth 28a.

  With the above-described configuration, the blade head 24 is supported by the inner surface copying head 21 so as to be rotatable about its axis, and the blade 29 can be moved in the radial direction by the axial movement of the axial movement member 28. The radial movement member 27 is guided in the radial direction by the inner surface of the sub main body 26 when moving in the radial direction, and supported in the rotational direction by the inner surface of the sub main body 26 during cutting.

According to the embodiment of the present invention, the above-described inner surface processing inspection apparatus includes an inner surface inspection apparatus. In addition, this inner surface inspection apparatus is in a state where the long shaft fixing device 10 for fixing the long shaft 1 and an inner space of the long shaft 1 are positioned in order to inspect the inner surface 2 of the long shaft 1. And an inner surface inspection head 15 for inspecting the processed inner surface 2.
The inner surface inspection head 15 is attached to the inner surface copying head 21 in place of the blade head 22, and is the state of the inner surface 2 of the pilot hole (the shape of the inner surface 2, that is, the radius, the diameter, the roundness, or the surface of the inner surface 2). Inspect for roughness.
FIG. 5 shows a configuration example A of the inner surface inspection head 15 according to the embodiment of the present invention, and shows a state in which the inner surface inspection head 15 replaced with the blade head 22 is attached to the inner surface copying head 21. This exchange is performed as follows, for example. In FIG. 3, the rotary rod 42 is moved in the axial direction to the left in FIG. 3 together with the rotary drive device 46, and the blade head 22 is taken out from the inside of the long shaft 1. Once removed, the blade head 22 is removed from the tip of the rotating rod 42, and the inner surface inspection head 15 is attached to the tip of the rotating rod 42 instead. Thereafter, the inner surface inspection head 15 is inserted into the long shaft 1 and attached to the inner surface copying head 21 by moving the rotating rod 42 in the axial direction together with the rotation driving device 46.

  In addition, the inner surface inspection head 15 is supported by the inner surface copying head 21 so as to be rotatable about its axis via a bearing 15a in a state of being attached to the inner surface copying head 21. In this example, the bearing 15a is incorporated in a side surface facing the radial direction at the axial end portion 15b of the inner surface inspection head 15. Further, as shown in FIG. 5, the axial end portion 15b is inserted into the hollow portion 23b formed in the main body 23 and recessed in the axial direction, so that the inner surface inspection head 15 is attached to the inner surface copying head 21. Become. When the inner surface scanning head 21 is moved in the axial direction with respect to the long shaft 1 by the head support device 30, the inner surface scanning head 21 is pushed in the axial direction by the inner surface inspection head 15 and is axially moved together with the inner surface inspection head 15. Moved to.

  As shown in FIG. 5, the inner surface inspection head 15 includes a radial movement member 16 that can move in the radial direction of the long shaft 1, and a driving device that moves the radial movement member 16 in the radial direction (in this example, A contact inspection sensor 18a that detects contact between the radial movement member 16 and the inner surface 2 of the long shaft 1 and outputs a signal to that effect. And a distance measuring unit 18b that measures the distance that the radial movement member 16 has moved in the radial direction from the initial position to the contact position where the radial movement member 16 contacts the inner surface 2 based on the signal. In this case, the rotation drive device 46 functions as a relative rotation device that rotates the inner surface inspection head 15 relative to the long shaft around the axis of the long shaft 1.

  Similar to the radial direction moving member 27, the radial direction moving member 16 has inclined teeth 16 a that are inclined with respect to the axis (that is, the rotation center of the inner surface inspection head 15).

The axial movement device 48 moves the axial movement member 28 in the axial direction as described above.
The axial movement member 28 may be used in common by the inner surface inspection head 15 and the cutter head 22. That is, in this example, the axially moving member 28 of the inner surface inspection head 15 is used in the blade head 22. The axial movement member 28 can be pulled out from the blade head 22 in the axial direction together with the tip of the blade driving rod 44 outside the long shaft 1 when the blade head 22 is replaced with the inner surface inspection head 15. Next, the axial movement member 28 is inserted into the inner surface inspection head 15 together with the tip of the blade drive rod 44 in the axial direction, so that the axial movement member 28 is attached to the inner surface inspection head 15 as shown in FIG. it can. Thus, the axial direction moving member 28 can be pulled out from the blade head 22 and inserted into the inner surface inspection head 15. The inclined teeth 28a are inclined in the same direction as the inclined teeth 16a and mesh with the inclined teeth 16a. With this configuration, the axial movement of the axial movement member 28 can cause the radial movement member 16 to move radially outward and contact the inner surface 2. The axial movement member 28 used in the inner surface inspection head 15 may be separate from the axial movement member 28 used in the blade head 22, but the axial movement member 28 of the blade head 22 It has the same configuration.

  For example, the contact detection sensor 18a can detect the contact pressure (that is, contact) between the radial direction moving member 16 and the inner surface 2 so that the blade driving rod 44 or the axial direction moving member 28 (in the example of FIG. 5, the blade driving). It is a piezoelectric element incorporated in the rod 44). That is, since the contact pressure acts on the blade drive rod 44 via the radial direction moving member 16 and the axial direction moving member 28, the contact can be detected by the contact detection sensor 18a.

For example, as shown in FIG. 5, the distance measuring unit 18b may include a linear scale 18b-1, a conversion unit 18b-2, and a proximity sensor 18b-3.
The linear scale 18b-1 measures the axial movement distance of the axial movement member 28 (that is, the blade drive rod 44). Moreover, the linear scale 18b-1 complete | finishes the said measurement, when the signal which shows the said contact from the contact detection sensor 18a is received.
The conversion unit 18b-2 converts the axial movement distance of the axial movement member 28 measured by the linear scale 18b-1 into the radial movement distance of the radial movement member 16.
The proximity sensor 18b-3 is, for example, a known eddy current detection type limit switch, and detects the initial position where the radial moving member 16 is most retracted radially inward. In the example of FIG. 5, the proximity sensor 18b-3 detects the axial position of the axial movement member 28 (that is, the blade drive rod 44) corresponding to the initial position. Thereby, since the linear scale 18b-1 can start measurement of the axial movement distance from the axial position of the axial movement member 28 corresponding to the initial position, the conversion unit 18b-2 uses the initial position as the origin ( Zero)), the moving distance of the radial moving member 16 can be calculated.
With such a configuration, the radial movement member 16 moves in the radial direction from the initial position to the contact position where the radial movement member 16 contacts the inner surface 2 based on the signal indicating the contact from the contact detection sensor 18a. The distance traveled can be measured. At this time, it is necessary to measure in advance the radial position from the center of the initial position.

  Distance measurement by the distance measurement unit 18b is performed at each rotational position. That is, when the inner surface inspection head 15 is rotated by the rotation driving device 46, the distance is measured by the distance measuring unit 18b at each rotation position. Based on the distance at each rotational position, the shape of the inner surface 2 in the rotational direction can be acquired. Further, the roundness and the surface roughness can be measured by continuously measuring the contact position in the rotation direction.

  As for the method of transmitting the detection signal from the contact detection sensor 18a to the outside, for example, an axial hole is provided in the blade drive rod 44, and a signal cable connected to the contact detection sensor 18a is passed through the hole, You may employ | adopt the structure of transmitting a signal.

  The distance measuring unit 18b may have another configuration instead of the above configuration. For example, when the axial movement device 48 moves the axial movement member 28 with a ball screw, the distance measuring unit 18b detects the rotation number of the ball screw with an encoder instead of using the linear scale 18b-1. The movement distance of the axial movement member 28 may be calculated by multiplying the detected value by a pitch. In this case, the other points are the same as described above with reference to FIG.

  Other configurations of the inner surface inspection head 15 other than those described above may be the same as the blade head 22 except that the blade 29 is not provided.

  The inner surface inspection head 15 is not limited to the above-described configuration example A shown in FIG. 5, and any of the following configuration examples B to E may be used. In this case, in each configuration example, points other than the contents described below may be the same as the configuration example A described above.

(Configuration example B)
The inner surface inspection head 15 may be one that can inspect the shape of the inner surface 2 in a non-contact manner (for example, a laser distance meter). When the inner surface inspection head 15 has a laser distance meter, the laser distance meter is attached to the inner surface inspection head 15 so as to irradiate the laser in the radial direction. Thereby, the distance to the inner surface 2 can be acquired at each rotational position. That is, when the inner surface inspection head 15 is rotated by the rotation driving device 46, the distance from the laser distance meter 18 to the inner surface 2 can be acquired by the laser distance meter at each rotational position. Based on these acquired distances, the shape of the inner surface 2 in the rotation direction can be acquired. In addition, since the configuration example B is a non-contact type, the above-described radial movement member 16 can be omitted. Preferably, similarly to the blade head 22, a space in which the axial movement member 28 can be inserted from the side opposite to the inner surface copying head 21 is formed in the inner surface inspection head 15. This eliminates the need to separate the axially moving member 28 from the blade drive rod 44 when exchanging the blade head 22 and the inner surface inspection head 15. As for a method of transmitting a signal between the laser distance meter in the long shaft 1 and the outside of the long shaft, for example, a hole is provided in the blade drive rod 44 and the inner surface inspection head 15, and a laser is provided in the hole. You may employ | adopt the structure of transmitting a signal through the signal cable connected with the distance meter.
(Configuration example C)
Further, the inner surface inspection head 15 has an imaging device (for example, a CCD camera) that images the inner surface 2. In this case, the imaging device is attached to the outer peripheral surface of the inner surface inspection head 15 so as to face outward in the radial direction. Preferably, the inner surface inspection head 15 is rotated by the rotation driving device 46, whereby the image data of the inner surface 2 is acquired over the entire circumference in the rotation direction, and the surface roughness of the inner surface 2 can be inspected from this image data. Further, since the configuration example C is a non-contact type, the above-described radial movement member 16 can be omitted. Preferably, similarly to the blade head 22, a space in which the axial movement member 28 can be inserted from the side opposite to the inner surface copying head 21 is formed in the inner surface inspection head 15. The method for transmitting a signal between the CCD camera in the long shaft 1 and the outside of the long shaft may be the same as in the configuration example B.
In this configuration example C, a plurality of the imaging devices are provided in the circumferential direction around the axis of the long shaft 1. In this case, the inner surface 2 can be inspected over a plurality of locations in the entire circumference or circumferential direction without rotating the inner surface inspection head 15.
(Configuration example D)
In the above configuration example A, a plurality of sets of the radial direction moving member 16, the driving device including the axial movement device 48 and the axial direction movement member 28, the contact detection sensor 18 a and the distance measuring unit 18 b are provided. The moving members 16 are provided at different positions in the circumferential direction around the axis of the long shaft 1. In this case, instead of the above-described blade drive head 44, a drive head connected in the axial direction to the axial movement member 28 is provided for each of the above sets. Further, in the same manner as in Configuration Example A, in each set, the driving device moves the corresponding driving head in the axial direction, thereby moving the corresponding radial moving member 16 via the axial moving member 28. The distance measuring unit 18b moves in the radial direction, and acquires the distance from the initial position to the inner surface based on a signal from the contact detection sensor 18a. In this case, each set of the radial direction moving member 16 and the axial direction moving member 28 is supported on the inner surface of the inner surface inspection head 15, and the operation of each set of the radial direction moving member 16 and the axial direction moving member 28 is performed by the inner surface inspection head. 15 may be guided to the inner surface.
In the case of the configuration example D, the inner surface 2 can be inspected over the entire circumference or a plurality of locations in the circumferential direction without rotating the inner surface inspection head 15.
(Configuration example E)
In the configuration example B, a plurality of the laser distance meters are provided in the circumferential direction around the axis of the long shaft 1. In this case, the inner surface 2 can be inspected over a plurality of locations in the entire circumference or circumferential direction without rotating the inner surface inspection head 15.

FIG. 6 is an explanatory diagram of the inner surface machining method of the long shaft.
This method is an inner surface machining method in which the inner surface of the elongate long shaft 1 having the pilot hole 2 penetrating in the axial direction and symmetric with respect to the axis line is processed by following the pilot hole 2 using the above-described apparatus. .
6A shows an inner surface processed state of the long shaft 1 of FIG. 1 on the left end side (counter flange side) and FIG. 6B shows a right end side (flange side).

In order to carry out the above-described method, a machining head 20 comprising the above-described cylindrical main body 21 and a cylindrical sub-body 22 rotatably supported around its axis is used.
The main body 21 has a diameter (for example, a diameter of 95 mm) that can be inserted into the pilot hole 2 of the long shaft 1 from at least one side in the axial direction.
The sub main body 22 has a diameter (for example, a diameter of 78 mm) that can be inserted into the pilot hole 2a having the minimum diameter of the long shaft 1 in the axial direction.

6A, the machining head 20 is inserted into the pilot hole 2a having the minimum diameter on the left end side (counter flange side) of the long shaft 1 shown in FIG.
Next, liquid is supplied between the pair of pistons 25 through the hollow holes 32a of the boring bar 32, and the pair of pistons 25 are moved away from each other, thereby radially expanding the pair of inner surface chucks 24. . By expanding the diameter of the inner surface chuck 24, the axis (rotation center) of the cutter head 22 is made to coincide with the axis of the pilot hole 2, and the inner surface scanning head 21 and the cutter head 22 are moved in the axial direction in the pilot hole 2 by the inner chuck 24. Support as possible. Until this time, both the blades 29 are in the radially inward position where they do not interfere with the inner surface 2.
When the axis of the cutter head 22 coincides with the axis of the pilot hole 2, the cutter drive rod 44 is driven in the axial direction, so that the cutter 29 is moved radially outward via the axially moving member 28 and the radially moving member 27. The blade 29 is aligned. This alignment may be performed using the above-described alignment contact sensor.
When the alignment is completed, the sub-main body 22 is rotationally driven around the axis line from the outside by the rotating rod 42, and the inner surface is processed to follow the pilot hole 2.
By the above-described processing method, the inner surface can be processed using the apparatus of the present invention up to the vicinity of the pilot hole 2a having the minimum diameter of the long shaft 1.

Next, in FIG. 6B, the axial direction of the long shaft 1 is reversed, and the machining head is directed with the sub main body 22 side toward the prepared hole on the right end side (flange side) of the long shaft 1 in FIG. 20 is inserted and the inner surface is similarly processed.
By this processing method, the inner surface can be processed to the vicinity of the flange of the long shaft 1 using the apparatus of the present invention.

  Thereafter, when the inner surface machining of the long shaft 1 is finished, the inner surface 2 can be inspected by attaching the inner surface inspection head 15 to the inner surface copying head 21 instead of the blade head 22 as described above. In this inspection, the inner surface 2 can be inspected over a desired axial position or range by moving the inner surface copying head 21 in the axial direction together with the inner surface inspection head 15 by the bar moving device 34. Such an inspection of the inner surface 2 can be performed not only when the inner surface inspection head 15 has the configuration example A of FIG. 5 but also when it has the above-described configuration examples B to E.

  Note that both end portions of the machining head 20 can be easily attached to and detached from the boring bar 32, the rotating rod 42 and the blade driving rod 44 with bolts or the like so that the axial direction of the long shaft 1 can be easily reversed. .

According to the above-described configuration of the present invention, the machining head 20 is reduced in size and diameter by supplying the driving source necessary for the machining head 20 from the two shafts 32 and 42 arranged on both sides in the axial direction. be able to.
That is, the head support device 30 and the blade rotation device 40 connected to the machining head 20 through the pilot hole 2 of the long shaft 1 perform axial movement and rotational drive of the machining head 20 having the blade 29 for inner surface machining. The machining head 20 has a blade 29 for machining the inner surface that can move in the radial direction, and only needs to have a function of making the rotation center of the blade 29 coincide with the axis of the pilot hole and movably support it in the axial direction. The maximum diameter of the head 20 can be made thinner than at least one of the pilot holes 2 at both ends of the long shaft 1.

A chuck 24 is provided in the machining head 20 to release the machining reaction force in the radial direction to the workpiece (long shaft 1), and the shaft (boring bar 32) takes charge of the machining reaction force in the rotation direction, thereby realizing a long diameter reduction. .
That is, with the configuration in which the machining head 20 has the inner surface copying head 21, the diameter is radially increased by the hydraulic pressure applied by the liquid supplied from the head support device 30, and the axis thereof is matched with the axis of the pilot hole, and By supporting it so as to be movable in the axial direction, the processing head 20 can be further reduced in size and the tool reaction force at the time of processing is received by the inner surface 2 of the long shaft 1. Can be prevented.

In addition, the inner surface inspection head 15 is attached to the inner surface copying head 21 by replacing with the cutter head 22, and in this state, the state of the inner surface 2 of the prepared hole can be inspected by the inner surface inspection head 15, so that the long shaft after cutting You can easily inspect the inner surface of.
That is, the inner surface inspection head 15 attached to the inner surface copying head 21 can be moved in the axial direction of the long shaft by the head support device together with the inner surface copying head 21 inside the pilot hole. The inner surface of the long shaft can be inspected by position or range. Therefore, it is not necessary to cut the long shaft in order to inspect and measure the inner surface of the long shaft. Further, since the inner surface of the long shaft can be inspected with the long shaft fixed to the long shaft fixing device, it is not necessary to prepare a dedicated jig for measuring the long shaft inner surface 2. Thus, the state of the long shaft inner surface 2 can be easily inspected.

Furthermore, by providing two sets of independent inner surface chucks 24 on the machining head 20, accurate coaxiality can be secured with respect to the workpiece pilot hole of the machining head 20, and coaxiality can be secured even with a tapered pilot hole.
That is, the inner surface copying head 21 has a pair of inner surface chucks 24 that are spaced apart in the axial direction, and is independently operated by a pair of pistons 25, so that the pilot hole 2 is cylindrical or tapered. Even if it exists, the processing head 20 can always be concentric with respect to the pilot hole.

Further, the machining head 20 having the blade head 22 moves the blade 29 in the radial direction by the movement of the axial movement member 28 moved by the shaft movement device 48 of the blade rotation device 40. Miniaturization is further facilitated.
Accordingly, it is possible to prevent boring accuracy due to the tool reaction force at the time of machining and accurately boring the inner surface of the long shaft following the pilot hole.

Further, according to the above-described method, the machining head 20 includes the main body 21 and the sub body 22, and the sub body 22 has a diameter that can be inserted into the pilot hole 2 a of the minimum diameter of the long shaft 1 in the axial direction. By reversing the axial direction of the long shaft 1 with respect to the machining head 20 and machining the inner surface following the pilot hole, the unworkable range can be minimized.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention. For example, any of the following contents (a) to (f) described below may be adopted, or a combination of plural or all of the following (a) to (f) may be adopted.

(A) The “tubular member” of the present invention is the long shaft 1 in the above-described embodiment, but according to the present invention, it is not limited thereto. That is, in the above-described embodiment, the inner surface processing inspection apparatus is an apparatus that processes and inspects the inner surface of the long shaft 1. However, according to the present invention, the inner surface processing inspection apparatus is a tubular member other than the long shaft 1. It may be an apparatus for processing and inspecting the inner surface.

(B) The “fixing device for fixing the tubular member” of the present invention is the long shaft fixing device 10 in the above-described embodiment, but according to the present invention, the “fixing device for fixing the tubular member” Other suitable devices (for example, known devices) may be used.

(C) The “processing machine for processing the inner surface of the tubular member fixed by the fixing device” of the present invention is configured by the processing head 20, the head support device 40, and the blade rotating device 40 in the above-described embodiment. According to the present invention, the “processing machine for processing the inner surface of the tubular member fixed by the fixing device” may be another appropriate device (for example, a known device).

(D) “Axial direction in which the machining head 20 is connected to the machining head from one end of the long shaft 1 through the pilot hole 2 and moves the machining head 20 relative to the long shaft 2 in the axial direction of the long shaft 1. The “movement device” is the “head support device 30” in the above-described embodiment. In this regard, according to the present invention, the “head support device 30” supports the processing head 20, but it is not necessary to move the processing head 20 in the axial direction. In this case, the “processing machine” of the present invention not only has the head support device 30 that supports the processing head 20 but does not move the processing head 20 in the axial direction, but also drives the long shaft 1 in the axial direction. A long shaft moving device to be moved as the axial direction moving device. The long shaft moving device may be, for example, a moving stage on which the chuck devices 12 and 13 are fixed and moved on the main frame 11 in the axial direction. Further, instead of the bar moving device 34, a bar fixing device that supports the boring bar 32 and fixes it in the axial direction is provided. Other points may be the same as the above-mentioned embodiment.

(E) “Relative rotation in which the blade 29 is connected to the machining head from the other end of the long shaft 1 through the pilot hole 2 and rotates relative to the long shaft 1 about the axis of the long shaft 1. The “device” is “the blade rotating device 40” in the above-described embodiment. In this regard, according to the present invention, the “blade rotating device 40” may fix the blade 29 in the rotation direction without rotating the blade 29. In this case, the “processing machine” of the present invention not only has the blade rotating device 40 that fixes the blade 29 in the rotation direction without rotating the blade 29, but also has a long length for driving the long shaft 1 around its axis. A scale shaft rotating device is provided as the relative rotating device. The long shaft rotating device is, for example, by rotating and driving grip portions 12a and 13a (see FIG. 2) provided on the chuck devices 12 and 13 holding the long shaft around the axis line. A long shaft may be rotated together with the chuck devices 12 and 13. In this case, a machining head fixing device that fixes the rod 42 in the rotation direction so that the rod connected to the blade head 22 (that is, the rotation rod 42 described above) does not rotate is provided instead of the rotation driving device 46 described above. It is done. Thereby, the blade head 22 is fixed in the rotation direction so that the blade head 22 (that is, the radial movement member 27 and the blade 29 supported by the inner surface of the blade head 22 in the rotation direction) does not rotate. Preferably, instead of the rotating rotor 24a, a free roller is used that can freely roll not only in the axial direction but also in a direction around the axial line. Thereby, even if the long shaft 1 rotates, the inner surface copying head 21 can be kept stationary. Other points may be the same as the above-mentioned embodiment.
In the present invention, “a relative rotation device that is connected to the machining head from the other end of the long shaft 1 through the pilot hole 2 and rotates the cutter 29 relative to the long shaft 1 about the axis of the long shaft 1. "May be the same as or different from the" relative rotation device for rotating the inner surface inspection head relative to the tubular member "of the present invention.

(F) The “inner surface inspection head for inspecting the inner surface of the tubular member processed by the processing machine while being positioned in the inner space of the tubular member” of the present invention is not limited to the above-described content, and the following (A) It suffices if the configuration is (E).

(A) The inner surface inspection head includes a radial movement member that is movable in a radial direction of the tubular member, a drive device that moves the radial movement member in the radial direction, and contact between the radial movement member and the inner surface. A contact detection sensor that detects a signal and outputs a signal to that effect, and a distance that measures the distance that the radial movement member has moved in the radial direction from an initial position to a contact position that contacts the inner surface based on the signal And a relative rotation device for rotating the inner surface inspection head relative to the tubular member around the axis of the tubular member. In this case, the radial direction moving member, the driving device, the contact detection sensor, the distance measuring unit, and the relative rotation device may be the same as those described above, or may be other appropriate ones.

(B) The inner surface inspection head includes a laser distance meter that measures the distance to the inner surface based on the laser reflected by the inner surface by irradiating the inner surface of the tubular member with a laser, and a relative rotation device. Thus, the inner surface inspection head is rotated relative to the tubular member around the axis of the tubular member. In this case, the relative rotation device may be the same as described above, or may be another appropriate device.

(C) The inner surface inspection head includes an imaging device that images the inner surface. In this case, a plurality of the imaging devices may be provided in the circumferential direction around the axis of the long shaft 1.

(D) The contact detection sensor includes a radial movement member that is movable in a radial direction of a tubular member, a drive device that moves the radial movement member in the radial direction, and the radial movement member and the inner surface. A contact detection sensor that detects a contact and outputs a signal to that effect, and based on the signal, measures a distance that the radial movement member has moved in the radial direction from an initial position to a contact position that contacts the inner surface. A plurality of sets of the radial direction moving member, the driving device, the contact detection sensor, and the distance measuring unit, and the plurality of sets of the radial direction moving members of the tubular member. They are provided at different positions in the circumferential direction around the shaft. In this case, the radial direction moving member, the driving device, the contact detection sensor, the distance measuring unit, and the relative rotation device may be the same as those described above, or may be other appropriate ones.

(E) The inner surface inspection head includes a laser distance meter that measures the distance to the inner surface based on the laser reflected by the inner surface by irradiating a laser toward the inner surface of the tubular member, and the laser distance A plurality of meters are provided in the circumferential direction around the axis of the tubular member.

1 long shaft, 2 pilot hole, 2a pilot hole with minimum diameter,
10 Long shaft fixing device (fixing device), 11 Main frame,
12, 13 chuck device, 12a, 13a gripping part,
14 support brackets, 15 inner surface inspection head,
15b Axial end of the inner surface inspection head, 16 radial moving member,
18a contact detection sensor, 18b distance measuring unit,
20 processing head (part of processing machine), 21 inner surface scanning head, 22 blade head,
23 main body, 23a hydraulic flow path, 23b recess of main body,
24 inner surface chuck, 24a rotating rotor, 24b taper surface,
24c guide member, 25 piston, 25a taper surface,
26 sub-body, 26b axial end of the sub-body, 27 radial movement member,
27a inclined tooth, 28 axial movement member, 28a inclined tooth, 29 blade,
30 Head support device (axial movement device that is part of the processing machine),
32 boring bar, 34 bar moving device, 34a moving member,
34b Screw screw, 34c Rotation drive device,
36 hydraulic supply device, 36a hydraulic unit, 36b hydraulic hose,
40 blade rotation device (part of processing machine), 42 rotation rod, 44 blade drive rod,
46 Rotation drive device (relative rotation device), 46a Horizontal moving table,
46b Rotary drive chuck, 48-axis moving device

Claims (7)

A processing machine for processing the inner surface of the tubular member, a inner surface machining inspection apparatus and an inner surface inspection apparatus for inspecting a processed inner surface of the tubular member,
The tubular member is a long shaft,
The processing machine
An inner surface cutting tool that can be inserted axially into the pilot hole of the long shaft and movable in the radial direction, and has a function of aligning the rotation center of the cutter with the axis of the pilot hole; and A machining head movable in the axial direction;
A head support device connected to the machining head through a pilot hole from one end of the long shaft and moving the machining head in the axial direction;
A blade rotation device connected to a machining head through a pilot hole from the other end of the long shaft and rotating the blade around an axis;
The processing head has an inner surface copying head and a cutter head,
The inner surface copying head has a function of making its axis coincide with the axis of the pilot hole and is moved in the axial direction by the head support device,
The cutter head is attached to the inner surface copying head, and is supported by the inner surface copying head so as to be rotatable about its axis, and is rotationally driven by the blade rotating device.
The inner surface inspection apparatus includes a fixing device for fixing the tubular member, and an inner surface inspection head,
The inner surface inspection head inspects the processed inner surface in a state where the inner surface inspection head is attached to the inner surface copying head instead of the blade head and is positioned in the inner space of the tubular member . A processing machine for processing the inner surface of the tubular member, a inner surface machining inspection apparatus and an inner surface inspection apparatus for inspecting a processed inner surface of the tubular member,
The tubular member is a long shaft,
The processing machine
A machining head which has an inner surface cutting tool which can be inserted in the pilot hole of the long shaft in the axial direction and is movable in the radial direction, and which has a function of aligning the rotation center of the blade with the axis of the pilot hole; ,
An axial movement device connected to a machining head through a pilot hole from one end of the elongated shaft, and moving the machining head relative to the elongated shaft in the axial direction of the elongated shaft;
A relative rotation device that is connected to a machining head through a pilot hole from the other end of the long shaft, and rotates the cutter relative to the long shaft around the axis of the long shaft;
The processing head has an inner surface copying head and a cutter head,
The inner surface copying head has a function of making the axis line coincide with the axis line of the pilot hole,
The cutter head is attached to the inner surface copying head, is supported by the inner surface copying head and is relatively rotated with respect to the long shaft by the relative rotation device,
The inner surface inspection apparatus includes a fixing device for fixing the tubular member, and an inner surface inspection head,
The inner surface inspection head inspects the processed inner surface in a state where the inner surface inspection head is attached to the inner surface copying head instead of the blade head and is positioned in the inner space of the tubular member . The inner surface inspection head includes:
A radially moving member movable in a radial direction of the tubular member;
A driving device for moving the radial movement member in the radial direction;
A contact detection sensor that detects contact between the radially moving member and the inner surface and outputs a signal to that effect;
Claim 1, wherein the radial moving member the distance traveled to the radial direction from an initial position to a contact position in contact with said inner surface, which have a, a distance measuring unit for measuring on the basis of the signal, it is characterized by Or the inner surface processing inspection apparatus of 2 . Claim wherein the inner surface inspection head is, by irradiating a laser toward the inner surface, which have a laser distance meter for measuring a distance to the inner surface based on the laser reflected by the inner surface, characterized in that The inner surface processing inspection apparatus according to 1 or 2 . It said inner surface inspection head includes an imaging device for imaging the interior surface, that inner surface machining inspection apparatus according to claim 1 or 2, characterized in. The inner surface inspection head includes:
A radially moving member movable in a radial direction of the tubular member;
A driving device for moving the radial movement member in the radial direction;
A contact detection sensor that detects contact between the radially moving member and the inner surface and outputs a signal to that effect;
A distance measuring unit that measures a distance moved in the radial direction from the initial position to a contact position where the radial movement member contacts the inner surface, based on the signal;
A plurality of sets of the radial direction moving member, the driving device, the contact detection sensor, and the distance measuring unit are provided, and the plurality of sets of the radial direction moving members are different from each other in the circumferential direction around the axis of the tubular member. The inner surface processing inspection apparatus according to claim 1 , wherein the inner surface processing inspection apparatus is provided . The inner surface inspection head has a laser rangefinder that measures the distance to the inner surface based on the laser reflected by the inner surface by irradiating the inner surface with a laser.
The laser rangefinder, inner surface machining inspection apparatus according to claim 1 or 2, wherein the tubular member is provided with a plurality axial circumferentially around the, it is characterized.

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