JP3369461B2 - Inner diameter processing device using micro-finishing film - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a small-diameter inner diameter portion, particularly an opening portion on one side and a wall at the back, for finishing the inner surface of a tubular body such as a steel pipe and a clutch retainer for automobile parts with high accuracy. And / or an inner diameter processing apparatus using a micro-finishing film capable of processing the inner surface without any trouble and finishing with high accuracy even if the inner diameter has a step or a protrusion in the center.

[0002]

2. Description of the Related Art As an inner diameter processing apparatus using such a micro-finishing film, as shown in, for example, Japanese Unexamined Patent Publication No. 8-294860, two spiral guide grooves having opposite rotation directions but different radii are provided in a main body. It is disclosed that a columnar guide member provided with, a backup roll which is a polishing tool, and a guide roll are integrally attached and the microfinishing film is passed while changing the traveling direction. This product can be processed up to near the wall of the inner diameter part where there is an opening on one side and a wall at the back,
The guide member and each roll are integrated and attached.If these members are made too small, it will not be possible to reduce the feeding of the micro-finishing film, so it cannot be made smaller, so that there is a small inner diameter part, especially a step or protrusion. However, there is a problem in that the inner diameter portion cannot be processed due to the interference of the backup roll and the guide member.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a small-diameter inner diameter portion, particularly an opening portion on one side, at the back for highly accurately finishing the inner surface of a tubular body such as a steel pipe or a clutch retainer for automobile parts. Even if the inner diameter has a wall and / or has a step or protrusion in the center, the inner surface can be processed without any hindrance to finish with high accuracy, using a micro-finishing film. To provide a device.

[0004]

For this reason, according to the present invention, a base, a table mounted on the base so as to be reciprocable in the front-rear direction, and a polish head fixedly supported on the table are provided.
A polish tool vertically movably attached to the polish head, a film holder and a film winding device supported on both side surfaces of the polish head, and a microfinishing between the film holder and the film winding device and the polish tool. A pair of film guide rollers each of which has an inner end fixedly supported by a guide roller rotation shaft pivotally supported by the polish head so as to guide the film through a shaft and a flange, and substantially horizontally to the polish tool. A pair of tool rollers that are supported and guide the film between each film guide roller and the polishing tool, and press the film supplied from the film holder to the polishing tool against the inner diameter of the workpiece to press the film. The work is wound by a winding device to perform inner diameter processing of the work, An outer end of the drag roller rotating shaft is rotatably connected to one end of the link, the other end of the link is fixed to a cam roller, and the cam roller is guided along a cam groove of a cam plate fixed to the base. and is movable, wherein the poly shoe when the head is at the end retreat situ a retracted position wherein each said film guide rollers takes almost water <br/> flat posture, the poly shoe tool the workpiece internal machining As described above, when the polish head is at the forward end position, the film guide rollers are tilted by a predetermined angle from the substantially horizontal posture and horizontally apart from the work piece so as not to interfere with the work piece. The above-mentioned problems of the prior art are solved by providing an inner diameter processing apparatus using a micro-finishing film.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the attached FIGS. FIG. 1 is a plan view of an inner diameter processing apparatus using a microfinishing film according to an embodiment of the present invention, FIG. 2 is a side view of the apparatus of FIG. 1, FIG. 3 is a front view of the apparatus of FIG. 1 is an enlarged view of a main part of the polish head and the workpiece, and FIGS. 4 and 5 are enlarged views of a main part of the polish head and the workpiece of FIGS. 2 and 3, respectively. Shown in the original position.
Similarly, FIGS. 6 to 10 are plan views, side views, front views, and FIG. 7 in a state in which the inner diameter processing device is at the forward end processing position, respectively.
9A and 9B are enlarged views of the essential parts of the polish head and the workpiece shown in FIG.

As shown in FIGS. 1 to 3, an inner diameter processing apparatus using a microfinishing film according to an embodiment of the present invention is mounted on a base 10 and on the base 10 so as to be reciprocally movable in the front-rear direction. Table 1, a polishing head 5 fixed to the table 1, a polishing tool 8 attached to the polishing head 5 so as to be vertically movable, a film holder 9 and a film winding device supported on both side surfaces of the polishing head 5. 2, a film holder 9, and a guide roller rotating shaft 13 pivotally supported by a polish head 5 so as to guide the microfinishing film 4 between the film winding device 2 and the polish tool 8. It is almost horizontal to the pair of film guide rollers 3 and 3 whose ends are fixedly supported via the shaft 14 and the flange 11 and the polishing tool 8. The film 4 supplied from the film holder 9 to the polishing tool 8 is supported by a pair of tool rolls 7 and 7 which guide the film 4 between the film guide rollers 3 and 3 and the polishing tool 8. The work 20 is pressed against the inner diameter 21 or 22 of the work 20 and then wound by the film winding device 2 to perform the work inner diameter processing.

As can be seen from FIGS. 4 and 5, the inner ends of the respective film guide rollers 3 and 3 have guide roller rotating shafts 13.
Is rotatably supported on one side of the guide roller rotating shaft 13
Has its outer end rotatably connected to one end of a link 12, the other end of the link 12 is fixed to a cam roller 15, and the cam roller 15 extends along a cam groove 6 of a cam plate 16 fixed to the base 1. It is guided and movable. When the polish head shown in FIGS. 1 to 5 is in the retracted position, which is the retracted position, the film guide rollers 3 and 3 take substantially horizontal postures (FIGS. 4 and 5). At this time,
The micro-finishing film 4 is horizontally pulled out from the film holder 9, and the film direction conversion roller 13
Is vertically converted by the film guide roller 3 and is horizontally converted by the film guide roller 3 and is supplied to the polishing tool 8 via the tool roll 7. The film 4 wound from the polish tool 8 is also horizontally moved by the film guide roller 3 via the tool roll 7 and the film direction changing roller 13
After being respectively changed in the vertical direction, the direction is changed in the horizontal direction and wound on the film winding device 2.

As shown in FIGS. 6 to 10, when the polishing head is at the forward end position so that the polishing tool performs the inner diameter machining of the workpiece, the respective end portions of the film guide rollers 3 and 3 are guide rollers. The guide roller rotation shaft 13 is rotatably supported on one side of the rotation shaft 13, the other side is rotatably connected to one end of the link 12, and the other end of the link 12 is rotatably connected to the cam roller 15. And the cam roller 15 is a cam plate 16 fixed to the base 10.
The film guide rollers 3 and 3 are guided and moved along the cam groove 6 of FIG. 1 and are tilted to a position where they are separated from the work piece by a predetermined angle in the horizontal direction and do not interfere with the work piece. At this time, the micro-finishing film 4 is pulled out horizontally from the film holder 9, vertically changed by the film direction changing roller 13, changed in direction by a predetermined angle by the film guide roller 3, and further changed by the tool roll 7. The workpiece 2 is converted into a horizontal direction and supplied to the polishing tool 8.
The film 4 is wound by the film winding device 2 in a state where the film 4 is pressed against the inner diameter 21 or 22 of 0, and the inner diameter of the workpiece is machined.

Similarly, the horizontal film 4 wound from the polishing tool 8 is separated from the work 20 in the horizontal direction by a predetermined angle by the film guide roller 3 via the tool roll 7 and does not interfere with the work 20. After the direction is changed at a position, the film is changed in the vertical direction by the film direction changing roller 13, the direction is changed in the horizontal direction, and the film is wound by the film winding device 2. Since the film 4 hardly grows,
As shown in FIG. 9, when the film 4 passes the tool roll 7, the front end of the film 4 is in contact with the tool roll 7, but the rear end of the film 4 hangs down, and the film guide roller 3 moves to the workpiece 20. It is separated horizontally from and is retracted to a position where it does not interfere with the work piece. Therefore, if only the polish tool 8 and the tool roll 7 enter the inner diameter portion of the workpiece, the inner diameter of the workpiece can be machined, so that the inner diameter portion having a small diameter, in particular, the opening portion at one side and the wall at the back, and / Alternatively, even if the inner diameter portion has a stepped portion or a protrusion in the center, the inner surface can be processed and finished with high accuracy without any trouble.

In the embodiment shown in FIGS. 1 to 5, the workpiece 20 is held by a work holding device (not shown), and in the embodiment shown in FIGS.
The workpiece 20 is gripped and rotated by a workpiece gripping device (not shown), and a minute vibration is applied in the axial direction (front-back direction) of the gripping device. The predetermined angle is preferably about 60 °. At this angle, the direction of the film 4 can be accurately changed without any trouble.

[0011]

As described above, according to the present invention,
When the polishing head is at the forward end position so that the polishing tool can perform the inner diameter machining of the workpiece, the pair of film guide rollers are separated from each other by a predetermined angle from the horizontal position and horizontally from the workpiece, and do not interfere with the workpiece. Since it can be tilted to the position, so that almost only the polish tool and tool roll can enter the inner diameter of the workpiece, the inner diameter of the workpiece can be machined, so there is an opening with a small inner diameter, especially one side and a wall at the back, And / or an inner diameter processing device using a micro-finishing film capable of processing the inner surface without any trouble and finishing with high accuracy even if the inner diameter has a step or a protrusion in the center Became. Desirably, if the predetermined angle is set to about 60 °, the direction of the film can be accurately changed without any trouble.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which an inner diameter processing apparatus using a microfinishing film according to an embodiment of the present invention is in a last retracted position which is a retracted position, and a workpiece 20 is a work holding device (not shown). Being gripped by.

2 is a side view of the device of FIG. 1. FIG.

FIG. 3 is a front view of the device of FIG.

FIG. 4 is an enlarged view of a main part of the polish head and the workpiece of FIG.

5 is an enlarged view of a main part of the polish head and the workpiece of FIG.

6 is a plan view showing a state in which the inner diameter processing apparatus of FIG. 1 is in an advanced end processing position, in which a workpiece 20 is gripped and rotated by a work gripping device (not shown).

FIG. 7 is a side view of the device of FIG.

FIG. 8 is a front view of the device of FIG.

9 is an enlarged view of a main part of the polish head and the workpiece of FIG. 7. FIG.

FIG. 10 is an enlarged view of a main part of the polish head and the workpiece of FIG.

[Explanation of symbols]

1. table 2. Film winding device 3. Film guide roller 4. Micro Finishing Film 5. Polish head 6. Cam groove 7. Tool roll 8. Polish tool 9. Film holder 10. base 12. Link 13. Guide roller rotation axis 15. Cam roller 16. Cam plate 20. Workpiece 21, 22. Workpiece inner diameter

Claims (2)

(57) [Claims] 1. A base, a table mounted on the base so as to be capable of reciprocating back and forth, a polish head fixedly supported on the table, a polish tool mounted on the polish head so as to be movable up and down, and both side surfaces of the polish head. A film holder and a film take-up device supported on the film holder, and a guide roller pivotally supported on the polish head for guiding a micro-finishing film between the film holder and the film take-up device and the polish tool. A pair of film guide rollers, each of which has an inner end fixed to the rotary shaft via a shaft and a flange, and a space between the film guide rollers and the polish tool, which are supported substantially horizontally by the polish tool. And a pair of tool rollers for guiding the film of the film. The film supplied to the film is pressed against the inner diameter of the workpiece and wound by the film winding device to perform the inner diameter processing of the workpiece, and the guide roller rotating shaft is rotated at its outer end to one end of the link. And the other end of the link is fixed to a cam roller, and the cam roller is guided and movable along a cam groove of a cam plate fixed to the base, and the polish head is in a retracted position. When in the final retreat position, each of the film guide rollers takes a substantially horizontal posture, and when the polish head is in the forward end position so that the polish tool performs the workpiece inner diameter processing, each of the film guide rollers respectively. It is characterized in that it is tilted at a predetermined angle from the substantially horizontal posture and horizontally apart from the workpiece so as not to interfere with the workpiece. An inner diameter processing device using a micro finishing film. 2. The inner diameter processing apparatus using a microfinishing film according to claim 1, wherein the predetermined angle is about 60 °.