JPH0647221B2 - Workpiece measuring device used for general-purpose lathes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a measuring device for a workpiece to be mounted on a general-purpose lathe for use.

(B) Conventional technology and problems to be solved by the present invention Conventionally, a movement amount detection scale is provided along the side edges of the Z-axis carriage that moves to the left and right of the lathe and the X-axis carriage that moves back and forth. By connecting a display device to the detector of this movement amount detection scale, the size of the workpiece, that is, the machining start point of the machining surface of the workpiece is used as the reference point of the tool post It shows the dimension in the axial direction up to the location and the diameter of the processing location of the workpiece.
With this type of tool, when the tool post of a lathe is turned and any of the multiple tools fixed to the tool post is used in accordance with the machining process, a numerical value is set by the keyboard each time the tool to be used is changed. I have to fix it,
Further, when it was necessary to change the reference point in the axial direction of the work piece, the reference point had to be reset for each of a plurality of cutting tools fixed to the tool rest. Furthermore, when the sub carriage of the lathe is moved to the left or right, the tool rest moves together with it, so the reference point in the axial direction that was set in advance shifts, so in this case also set the reference point. Since it had to be fixed, there was a drawback that the lathe could not be processed efficiently.

(C) Means for Solving Problems The present invention eliminates the above-mentioned conventional defects and enables the lathe to be efficiently processed, so that the Z-axis reciprocating moving to the left and right of the lathe can be performed. A movement amount detection scale is provided along the side edge of the base and the X-axis carriage that moves back and forth, and a display device is connected to the detector of the movement amount detection scale to display the dimensions of the workpiece on the display. In the measuring device of the work piece used for the general-purpose lathe,
An engaging section with a different cross-sectional shape is provided below each corner of the square column-shaped tool rest to which the tool is attached, and a display device is provided on the sub carriage that moves to the left and right of the lathe corresponding to this engaging section. By providing a pair of upper and lower limit switches linked to each other, when the tool rest is swung to use an arbitrary bite, the display of the display device corresponds to the engaging portion by switching the pair of upper and lower limit switches. A general-purpose lathe that can be switched to display the dimension in the axial direction from the preset reference point on the workpiece to the machining point to be machined by the bite and the diameter of the machining point on the workpiece. It is a measuring device of a work piece used for.

(D) Embodiments and Actions The following will describe embodiments of the present invention with reference to the drawings.

In the figure, (1) is a movement amount detection provided along the rear side edge of the Z-axis carriage (4) that is moved left and right by being guided by the guide surface (3) provided on the upper portion of the lathe (2). The scales (Z-axis main scale), (5) are guided by a guide surface (6) provided on the upper surface of the Z-axis carriage (4) and move along the side edge of the X-axis carriage (7) which moves back and forth. With the movement amount detection scale (X-axis scale) provided together, fix the main scale (8) along the side edge of the X-axis carriage (7) that moves back and forth as shown in FIG. A detector (9) slidably provided on the main scale (8) is fixed to the Z-axis carriage (4).

(10) is a display device provided with a numerical display surface (11) on the left side of the front surface, a keyboard (12) on the right side, and four recognition display lamps (13) on the upper side thereof. (Not shown in the drawing) and the detector (9) of the movement amount detection scale (5), and is installed at a position where it can be easily seen by the operator of the lathe.

In FIG. 2, (14), (15), (16) and (17) are the upper surfaces of the sub-reciprocating carriages (19) which are moved left and right by being guided by the guide surface (18) on the X-axis carriage (7). Engagement parts provided at each corner of a turret (20) in the form of a quadratic prism that can be swung freely, and the engagement of the right front corner cut to a height of about two-thirds from the lower end. A part (14) is provided, a left front corner is provided with an engaging part (15) which is cut to a height of about one-third from the lower end, and a left rear corner is cut approximately at the center. By providing the engaging portion (16) provided with the above and the engaging portion (17) which is not subjected to the above cutting at the corner on the right rear side, the engaging portions have different cross-sectional shapes. is there.

(21) and (21 ') are linked to the display device (10) and engaging portions (14), (15), (16) and (17).
The pair of upper and lower limit switches attached to the switch case (22) fixed on the sub-reciprocal carriage (19) correspondingly to the above, allows the tool rest (20) to be swung to rotate the tool rest (20).
Tool (23) (24) (2) attached to the tool mounting position of
5) When an arbitrary bit of (26) is used, the pair of upper and lower limit switches (21) (21 ') are switched, and the display device (10) has a preset reference point on the workpiece. To the machining location to be machined with the bite to be used and the diameter of the machining location of the workpiece are displayed.

When the tool rest (20) is swung to position the cutting tool (23) in the use state and the reference point in the axial direction of the workpiece related to the cutting tool (23) is changed, the other cutting tools (2
4) The reference point in the axial direction of the workpiece according to (25) and (26) is automatically changed.

Further, in FIG. 4 (27), reference numeral (27) is a movement amount detection scale (Z-axis subscale) provided along the side edge of the sub-reciprocal carriage (19) of the lathe (2). ) A vernier scale (not shown) is fixed along the side edge of), and a detector (not shown) slidably provided on the vernier scale is fixed on the X-axis carriage (7). When the sub carriage (19) is moved left and right, the movement amount is added to the movement amount of the Z-axis carriage (4) that moves left and right, and the display device (10).
It is designed to be displayed in.

In addition, (28) is a bush type changeover switch attached to the switch case (22), and when the changeover switch is turned on after the cutting edge of the cutting tool is brought into contact with an arbitrary reference surface of the workpiece, a numerical value 0 is obtained. Is set and displayed on the display device (10), and if the bite is subsequently moved to the left and right to process the work piece, the machining amount in the axial direction of the work piece is displayed on the display device (10). This change switch (2
When 8) is turned off, it is possible to display on the display device (10) the total size from a preset reference point, which will be described later, to the processing location in the workpiece.

Further, (28 ') is a push-type changeover switch attached to the switch case (22) adjacent to the changeover switch (28), and the cutting edge of the cutting tool is brought into contact with the outer peripheral surface (or inner peripheral surface) of the workpiece. When the changeover switch is turned on after the contact, the numerical value 0 is set and displayed on the display device (10), so if you continue to move the bite in the front-back direction to process the work piece, the machining amount in the diameter direction will be It can be displayed on the display device (10), and when the changeover switch (28 ') is turned off, the diameter of the processed portion can be displayed on the display device (10).

Since the measuring device according to the present invention is configured as described above, when the workpiece is processed by the lathe using the tool, first, the workpiece (drawing) is attached to the spindle (29) of the lathe (2). (Not shown in Fig. 2) is fixed, and then the required bite (23) (24) (25) (2) is attached to the tool mounting position of the tool rest (20).
After attaching 6), turn the turret (20) to position the cutting tool (23) in the used state.
O. No. on the confirmation display lamp (13) for displaying.
Since the lamp No. 1 is turned on, the user recognizes that the Z-axis carriage (4) or the X-axis carriage (7) is moved and the cutting edge of the cutting tool (23) is adjusted in the axial direction of the workpiece. If the numerical value 0 is input according to the procedure of inputting the dimension of the workpiece in the axial direction with the keyboard (12) of the display device (10) while guiding it to the reference point and bringing it into contact with the reference point, Z of the display surface (11) of the display device (10)
Numerical value 0 is set and displayed at the heading of the item, and the reference point is set, and byte (24) and byte (2
For 5) and the bite (26), the same reference point as the above reference point is set by the same method as before, and then the bite (2
After bringing the cutting edge of 3) into contact with the outer peripheral surface of the workpiece, measure the diameter of this portion with a micrometer or calipers,
By inputting the obtained numerical value according to the procedure for inputting the diametrical dimension of the work piece with the keyboard (12), the numerical value input in the X heading portion of the display surface (11) of the display device (10) is set. Since it is displayed, after setting the numerical values for the bite (24), the bite (25) and the bite (26) in the same way as before, rotate the spindle to rotate the workpiece and move the carriage. If moved, each byte (23) (24) (25) (26)
Since the blade edge can be guided to the processing position of the workpiece according to the order of the processing steps, the workpiece is subjected to external cutting, parting and other processing. in this case,
Turn the turret (20) to rotate the arbitrary tool (23) (2
4) (25) (26), the pair of upper and lower limit switches (21) (21 ') are engaged with the engaging portion (1).
4) OFF and OFF, the engaging part (16) is ON and OFF, and the engaging part (16) is OFF and O.
N and ON in the engaging portion (17) are switched to ON and ON respectively, and by this switching, the display of the display device (10) is switched corresponding to the engaging portion and corresponds to the bite to be used. The confirmation display lamp (13) is turned on, and the dimension in the axial direction from the preset reference point on the workpiece to the processing point to be processed by the bite used is the display surface of the display device (10) ( It is displayed in the section of the heading Z of 11), and the diameter of the processed portion of the work piece is displayed in the section of the heading X.

In addition, when the length of the work piece changes, it is necessary to change the reference point in the axial direction of the work piece that is preset as described above. In this case, the tool rest (20) is Turn to rotate a specific bite, that is, N on the confirmation display lamp (13).
O. If the bite (23) corresponding to the ramp of 1 is placed in the used state and the reference point in the axial direction of the workpiece is changed to another reference point by re-setting in the same manner as above, other bits The reference points in the axial direction of the workpiece according to (24), (25), and (26) are automatically changed.

In the meantime, the configuration and the processing method of the calculation during this period are as follows.

First, when the position of the reference bite (23) from the machine origin is displayed as (Z, X) in the Z-axis direction and the X-axis direction, the reference bite (23) is first displayed on the workpiece. If the reference position when abutting against any reference surface is set to 23
(A0, B0) and other bytes (24) (25) (2
In 6), similarly, the turret (20) in the shape of a square pole is swung, and the reference position of each cutting tool at the reference position, 24 (A1, B1)
), 25 (A2, B2) and 26 (A3, B3). As a result, the relative position between the reference byte (23) and each of the other bytes (24) (25) (26) is calculated. That is, with respect to the relative position on the Z axis, ΔA1 = A0-A1, ΔA2 = A0-A2, ΔA3 =
It becomes A0-A3, and the same calculation is performed for the relative position on the X-axis to determine the values of .DELTA.B1, .DELTA.B2 and .DELTA.B3. Next, sub carriage (19) and carriage (4)
(7) moves and the position of the reference byte is 23 (A0, B0
) To 23 '(A0', B0 '), the positions of the other bytes are 24'(A0'-ΔA1,B0'-, respectively).
ΔB1), 25 '(A0'-ΔA2, B0'-ΔB2
), 26 '(A0'-. DELTA.A3, B0 '-. DELTA.B3) are processed and displayed.

First, each bite (23) at the reference position as described above.
If the positions of (24), (25), and (26) are input, the sub-reciprocal carriage (19) and the carriages (4) and (7) move, and the positions of the bytes (24), (25), and (26) are the reference. Is added and displayed based on the relative positional relationship with the byte (23). As described above, as a method for detecting the position of the reference bite (23), a commercially available movement amount detection scale (for example, a magnetic scale or a pulse scale) is used.
To use.

(E) Effect of the Invention According to the present invention, when the tool post of the lathe is turned and an arbitrary bit is used as described above, the display of the display device is automatically switched by switching the pair of upper and lower limit switches. Conventionally, the dimension in the axial direction from the preset reference point on the workpiece to the machining point to be machined by the bite and the diameter of the machining point on the workpiece are displayed. When it is not necessary to reset the numerical value with the keyboard of the display device every time the tool bit used is changed, and when it is necessary to change the reference point in the axial direction of the work piece, If the tool bit (NO. 1 tool bit) is placed in use and the reference point in the axial direction of the workpiece related to the tool bit is changed, the reference points in the axial direction of the workpiece related to other tool bits The points are changed automatically, so It is possible to change the point easily and in a short period of time.
However, by providing a movement amount detection scale along the side edge of the sub-reciprocal carriage of the lathe, the movement amount when the sub-reciprocal carriage is moved left and right is added to the movement amount of the carriage that moves left and right. When you want to be displayed on the display device,
Since the dimension of the workpiece in the axial direction is accurately displayed even when the sub carriage is moved to the left or right, the machining work by the lathe can be performed very efficiently and accurately.

In addition, the improvement to be carried out on the lathe in order to carry out the present invention is only to cut the corners of the tool post, and it is not necessary to add other major improvements, so it can be easily implemented and the device can be provided at low cost. It has features such as being able to.

[Brief description of drawings]

FIG. 1 is a plan view of an apparatus according to the present invention. FIG. 2 is a perspective view of the main part of the device according to the present invention. FIG. 3 is a perspective view of a movement amount detection scale and a display device used in the present invention. FIG. 4 is a plan view of the embodiment. In the figure, (1) is the movement detection scale. (2) is a lathe. (4) is a Z-axis carriage. (5) is a movement amount detection scale. (7) X-axis carriage. (10) is a display device. (14), (15), (16) and (17) are engaging parts. (19) is a sub carriage. (20) is a turret. (21) is a limit switch. (23) (24) (25) (26) are bytes. (27) is a movement amount detection scale.

Claims (1)

[Claims] 1. A movement amount detection scale is provided along the side edges of a Z-axis carriage that moves to the left and right of a lathe and an X-axis carriage that moves back and forth, and a display device is provided on the detector of the movement amount detection scale. Below the corners of a quadrangular tool post on which four cutting tools of a lathe are attached, in a measuring device for a work that is connected to a general-purpose lathe that displays the dimensions of the work on the display. By providing an engaging portion having a cross-sectional shape different from each other, and by providing a pair of upper and lower limit switches linked to the display device on the sub-reciprocating carriage that moves to the left and right of the lathe corresponding to the engaging portion, the tool rest When turning the tool to use an arbitrary bite, the display of the display device is switched in correspondence with the engaging portion by switching the pair of upper and lower limit switches, and preset in the workpiece. Workpiece measuring apparatus for use in a general-purpose lathe, characterized in that the quasi-point and axial dimension of up to machining spot to be processed by the byte and the diameter of the machining portion of the workpiece is displayed.