KR102272172B1 - Jig for multi-axis machine apparatus with imporved pitch correction structure - Google Patents

Abstract

The present invention relates to a jig device for a multi-axis machine tool having an improved pitch correction structure, and more particularly, is disposed in a machine tool provided with a pair of machining shafts, and a pair of workpieces are placed at the center of each corresponding machining shaft. It relates to a jig device for a multi-axis machine tool having an improved pitch correction structure to be aligned.

Description

Jig for multi-axis machine apparatus with improved pitch correction structure {Jig for multi-axis machine apparatus with imporved pitch correction structure}

The present invention relates to a jig device for a multi-axis machine tool having an improved pitch correction structure, and more particularly, is disposed in a machine tool provided with a pair of machining shafts, and a pair of workpieces are placed at the center of each corresponding machining shaft. It relates to a jig device for a multi-axis machine tool having an improved pitch correction structure to be aligned.

As is well known, a machining center is a numerically controlled machine tool equipped with an automatic tool changing device or automatic selection function and capable of performing various types of machining on two or more surfaces of a workpiece without preparing or replacing the workpiece. In other words, it is a representative CNC machine tool that can continuously perform milling, drilling, boring, etc. while automatically exchanging cutting tools.

Here, the machining center is similar to general-purpose milling, in which a column, a knee corresponding to the X, Y, and Z axes, and a servo control mechanism by a servo motor are attached on the bed, so that up, down, front and back, and left and right movements are NC It consists of a table made by commands, a spindle on which a cutting tool is mounted, and a controller that inputs and outputs NC commands for controlling the operation of the table light spindle.

In addition, an automatic tool changer (ATC) that automatically changes 20 to 70 tools according to the cutting conditions is attached so that various milling operations, drilling and boring operations can be performed at once by automatic tool exchange. By doing so, multi-axis machining and multi-process machining are possible with just one setting, which is advantageous for automating the machining process of multiple types of small parts.

In order to process a workpiece using such a machining center, an operator fixes the workpiece to a jig means such as a vise fixed on a table, accurately sets the position of the fixed workpiece, and then sets the machining center When operated, based on the fixed position of the workpiece, the machining center feeds and controls the table on which the workpiece is fixed in the X and Y-axis directions according to the pre-entered machining values, and moves the main shaft equipped with a high-speed rotating cutting tool to Z. By controlling the feed in the axial direction, the workpiece is automatically processed.

Thus, when the processing of the workpiece is completed, the operator discharges the workpiece fixed to the jig means for processing from the jig means, fixes the new workpiece to the jig means again, and repeats the above work process to produce the same product. Repetitive processing is performed.

However, the machining center processes the workpiece by controlling the feed of the table on which the workpiece is fixed or the feed of the main shaft equipped with the cutting tool according to the machining values entered in advance based on the position of the workpiece fixed on the table. Therefore, the fixing position of the workpiece is very important in precision machining of the workpiece.

In addition, since the time required for attaching and detaching the workpiece to the table of the machining center greatly affects the productivity of the product, in fixing the workpiece to the table of the machining center, the jig means for fixing the workpiece is relative to the main shaft. It is installed on the correct reference point in the X and Y-axis directions, and even when the jig means finally fixes the workpiece, the workpiece must be quickly fixed at a certain position.

However, in the case of an unskilled person, even if the workpiece is fixed to the jig means, it takes a lot of time to fix the workpiece in an accurate position, resulting in a decrease in productivity of the product, and after fixing the workpiece to the jig means, processing and processing After discharging the completed work piece, in the process of repeatedly fixing the new work piece to the jig means, the concentration of the work is reduced due to the fatigue of the worker, or due to the lack of function due to inexperience, the machine is placed in the correct position of the jig means. When the workpiece is not fixed, there is also a problem in that the processing precision of the workpiece is significantly lowered and the occurrence rate of defective products increases.

Registered Patent Publication No. 10-0906726 (July 2009) Registered Patent Publication No. 10-1159425 (2012 07 03)

An object of the present invention, devised to solve the above problems, is arranged in a machine tool provided with a pair of machining axes, and a multi-axis machine having an improved pitch correction structure that aligns a pair of workpieces to the center of each machining axis. To provide a jig device for a machine.

The above object is achieved by the following configuration provided in the present invention.

A jig device for a multi-axis machine tool having an improved pitch correction structure according to the present invention,

a base plate coupled to a table of a multi-axis machine tool having a pair of machining axes including a reference machining axis;

a fixing jig part fixedly disposed on the base plate and aligning the workpiece to the center of the reference machining axis among the machining axes formed in the multi-axis machine tool; and

It is disposed on the base plate, and among the machining axes formed in the multi-axis machine tool, it is configured to include a movable jig part for positioning and aligning the workpiece to the center of the remaining machining axes,

The movable jig unit includes: a workpiece holder for fixing the workpiece; It comprises a movable support that moves the workpiece holder horizontally in the X-axis direction and the Y-axis direction so that the workpiece holder is positioned and aligned at the center of the processing axis,

The movable support includes an X-axis pitch correction unit for receiving thrust in the X-axis direction and moving straight in the X-axis direction to correct the pitch of the workpiece holder in the X-axis direction; a Y-axis pitch correction unit that receives thrust in the Y-axis direction and moves straight in the Y-axis direction to correct the pitch of the workpiece holder in the Y-axis direction; and a traction compression type restraint unit for restraining the mutually stacked X-axis pitch correction unit and Y-axis pitch correction unit by traction and compression in a vertical direction,

The X-axis direction pitch correction unit includes: a pitch correction block for the X-axis that advances and retreats in the left-right direction on the base plate, that is, in the X-axis direction; A transfer cylinder for the X-axis is connected to the pitch correction block for the X-axis to advance and retreat the pitch correction block for the X-axis in the X-axis direction through the advancing and retreating action of the advancing and retreating rod,

The Y-axis direction pitch correction unit includes: a Y-axis pitch correction block installed on the base plate in a Y-axis direction forward and backward structure; It includes a transfer cylinder for the Y axis that connects the advance and retreat rods to the pitch correction block for the Y axis, and advances and retreats the pitch correction block for the Y axis in the Y axis direction through the forward and backward action of the advance and retreat rods,

The upper and lower stacked X-axis pitch correction blocks and Y-axis pitch correction blocks are formed to pass through pitch adjustment holes communicating vertically with each other,

The traction compression type restraint unit includes: a traction cylinder through which the lifting rod passes through the pitch adjusting hole; It is fixed to the upper end of the lifting rod and is configured to include a traction compression head that is attached to the upper surface of the pitch adjustment hole of the X-axis pitch correction block stacked by the descent of the lifting rod,
Between the lifting rod of the traction cylinder and the traction compression head,
a spherical socket formed on the upper surface of the traction compression head and having a spherical contact surface;
It is characterized in that it is provided with a tilting connection comprising a; spherical member installed on the upper portion of the lifting rod and in contact with the contact surface of the spherical surface of the spherical socket in a spherical structure.

As described above, the present invention proposes a jig device in which a fixed jig part and a movable jig part are arranged on the base plate so that the workpiece holder provided in each jig part is positioned at the center of each processing axis provided in a multi-axis machine tool. have.

And, the movable support of the movable jig part is provided with an X-axis (left and right direction) pitch correction unit and a Y-axis (front-back direction) pitch correction unit stacked, through which the workpiece holder is pitch corrected in the X-axis direction and the Y-axis direction. Thus, precise pitch correction of the workpiece holder is achieved at the center of the machining axis disposed on the upper part.

In particular, in the present invention, the X-axis (left-right direction) pitch correction unit and the Y-axis (front-back direction) pitch correction unit that move in the X-axis direction and the Y-axis direction to correct the pitch of the workpiece holder are vertically pulled and compressed to make them face It adheres to the contact state to form a stable fixed state.

Accordingly, the present invention can align the workpiece holder and the workpiece fixed to the workpiece holder at the center of the corresponding machining axis by a precise pitch correction action by the movable support, and the movable support after the pitch correction is Since it is fixedly fixed by the traction compression type restraint unit, the alignment state of the workpiece holder and the workpiece fixed to the workpiece holder is not disturbed even if the tool provided on the processing shaft is cut and an action force according to the processing of the workpiece is provided. can be prevented, so that improved processing stability can be secured.

1 shows a state in which a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention is arranged in a multi-axis machine tool,
2 and 3 show the overall configuration of a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention,
4 is a movable jig part of a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention, correcting the pitch of the workpiece holder through each pitch correction unit constituting the movable support It shows the status of
5 is a movable jig portion of a multi-axis machine tool jig device having an improved pitch correction structure proposed as a preferred embodiment in the present invention, showing the detailed configuration of a movable support including a traction compression type constraint unit,
Figure 6 shows the detailed configuration of the tilting connection in the traction compression type constraint unit of the jig device for multi-axis machine tools having an improved pitch correction structure proposed as a preferred embodiment in the present invention;
7 is a movable jig portion of a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention, and shows the restraint state of each pitch correction unit through the traction compression type restraint unit.

Hereinafter, a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention will be described in detail with reference to the accompanying drawings.

1 shows a state in which a jig device for a multi-axis machine tool having an improved pitch correction structure proposed as a preferred embodiment in the present invention is arranged in a multi-axis machine tool, and FIGS. 2 and 3 are a preferred embodiment in the present invention. It shows the overall configuration of a jig device for a multi-axis machine tool having an improved pitch compensation structure proposed by , and FIG. 4 is a jig device for a multi-axis machine tool having an improved pitch compensation structure proposed as a preferred embodiment in the present invention. of the movable jig part, showing the state of correcting the pitch of the workpiece holder through each pitch correction unit constituting the movable support, and Figure 5 has an improved pitch correction structure proposed as a preferred embodiment in the present invention There is a movable jig part of the jig device for a multi-axis machine tool, showing the detailed configuration of a movable support including a traction compression type constraint unit, and FIG. 6 is a multi-axis with an improved pitch correction structure proposed as a preferred embodiment in the present invention. In the traction compression type constraint unit of the machine tool jig device, it shows the detailed configuration of the tilting connection part, and FIG. 7 is a multi-axis machine tool jig device having an improved pitch correction structure proposed as a preferred embodiment in the present invention. There is a movable jig, showing the constraint state of each pitch correction unit through the traction compression type constraint unit.

The jig apparatus 1 for a multi-axis machine tool having an improved pitch correction structure according to the present invention is a multi-axis having a pair of machining axes S1 and S2 including a reference machining axis S1 as shown in FIG. 1 . It is installed on the table of the machine tool and is a dedicated device for aligning and locating the workpiece at the center of each machining shaft (S1, S2) disposed on the upper part.

The multi-axis machine tool jig device 1, as shown in FIGS. 2 to 5, a base plate 10 installed on the table 110 of the multi-axis machine tool 100 and; A fixed jig part 20 for aligning the workpiece to the center of the reference machining axis S1 among the pair of machining axes S1 and S2 formed in the multi-axis machine tool 100 and fixed on the base plate 10 ; And disposed on the base plate 10, the X-axis (front and rear) direction, and the Y-axis (left and right) by feeding in the direction to horizontally correct the pitch, machining axes (S1, S2) formed in the multi-axis machine tool (100) Among them, it includes a movable jig part 30 for aligning and positioning the workpiece at the center of the remaining machining axis S2.

The fixing jig 20 includes a fixing support 20A fixed to a point of the base plate 10; and a workpiece holder 20B that is stacked on the fixing support 20A and fixes the workpiece.

Accordingly, the fixing jig part 20 is aligned in a line at the center of the reference machining shaft S1 provided in the multi-axis machine tool 100, and the workpiece holder 20B and the workpiece are positioned at the center of the standard machining shaft S1. The workpieces fixed to the holder 20B are placed in a line aligned with each other.

The center alignment of the reference machining shaft (S1) and the fixed jig portion 20, and the center alignment of the remaining machining shaft (S2) and the movable jig portion 30 are measured through a general-purpose measurement sensor, and this general-purpose measurement sensor Since it is a general-purpose technique to check the alignment of the centers between the respective components through this, a detailed description thereof will be omitted in the present specification.

And, the movable jig part 30 disposed on one side of the fixing jig part 20 includes a workpiece holder 30B for fixing the workpiece; Move horizontally including the X-axis direction and the Y-axis direction on the base plate 10 to correct the pitch of the workpiece holder 30B, and to align the workpiece holder 30B to the center of the processing axis S2. and a block assembly 30A.

Here, the movable jig part 30 is a multi-axis machine tool 100 by correcting the pitch by horizontally moving the workpiece holder 30B in the X-axis direction and the Y-axis direction by the movable block assembly 30A. Among the formed machining axes S1 and S2, the workpiece is aligned with the center of the remaining machining axes S2.

That is, as shown in FIG. 4, the movable block assembly 30A constituting the movable jig part 30 moves the workpiece holder 30B horizontally including the X-axis direction and the Y-axis direction, and is disposed on the top. The machining axis (S2) and the center coincide with each other.

In detail, the movable block assembly 30A receives thrust in the X-axis (left and right) direction and moves straight in the X-axis direction to correct the pitch in the X-axis direction of the workpiece holder 30B in the X-axis direction pitch correction unit 31; It is arranged to be stacked on the X-axis direction pitch correction unit 31, and is provided with thrust in the Y-axis (front and back) direction and moves straight in the X-axis (front and rear) direction in the Y-axis (front-back) direction of the workpiece holder 30B. and a Y-axis direction pitch correction unit 32 for correcting the pitch.

Here, the X-axis direction pitch correction unit 31 includes a pitch correction block 31a for the X-axis that advances and retreats in the left-right direction on the base plate 10, that is, in the X-axis direction; By connecting the advance and retreat rods 31b-a to the pitch correction block 31a for the X axis, the pitch correction block 31a for the X axis moves forward and backward in the X-axis direction through the forward and backward action of the advance and retreat rods 31b-a. and a transfer cylinder 31b.

And, the Y-axis (front and rear) direction pitch correction unit 32 is a Y-axis pitch correction block (32a) installed on the base plate 10 in the Y-axis direction in a forward and backward structure; For the Y-axis that connects the advance and retreat rods 32b-a to the pitch correction block 32a for the Y-axis, and advances and retreats the pitch correction block 32a for the Y-axis in the Y-axis direction through the forward and backward action of the advance and retreat rods 32b-a. It is configured to include a transfer cylinder (32b).

Here, each of the transfer cylinders (31b, 32b) may be adopted in various forms such as an electronic cylinder, a pneumatic cylinder, etc. In the present invention, for example, by moving the advancing and retreating rod through the hydraulic cylinder as shown in FIG. Horizontal transfer of the Y-axis direction pitch correction unit 31 and the Y-axis direction pitch correction unit 32 according to the pitch correction is intended.

And, in this embodiment, on the upper part of the pitch correction block for the Y-axis (32a), the pitch correction block (31a) for the X-axis is stacked to constitute the movable support (30A), and the pitch correction block for the X-axis (31a) The workpiece holder 30B is laminated and fixed on the upper part of the .

Therefore, the workpiece holder 30B for fixing the workpiece has a pitch in the X-axis direction is adjusted by the X-axis transfer of the movable block 31a in the X-axis direction constituting the movable block assembly 30A, and the Y The pitch in the Y-axis direction is adjusted by the Y-axis direction feed of the axial movable block 32b.

Thus, the workpiece holder 30B stacked and fixed on the movable block assembly 30A, and the workpiece fixed to the workpiece holder 30B, by the movable block assembly 30A in the X-axis direction, and the Y-axis The pitch of the direction is adjusted, and as a result, it is aligned with the center of the machining axis S2 disposed thereon.

On the other hand, in the present invention, the X-axis direction pitch correction unit 31 and the Y-axis (front and rear) direction pitch correction unit 32 to the movable support 30A including the center of the machining axis (S2) through horizontal movement and A traction compression type constraint unit 33 for fixing the pitch correction unit 31 in the X-axis direction and the pitch correction unit 32 in the Y-axis (front and back) direction in which the workpiece holder 30B coincides with the base plate 10 to be fixed to the base plate 10 . ) is added.

The traction compression type constraining unit 33, as shown in FIGS. 1 and 5 to 7, by constraining the X-axis direction pitch correction unit 31 and the Y-axis (front and rear) direction pitch correction unit 32 to be standardized, In the process of cutting the workpiece fixed to the workpiece holder 30B through the tool installed on the machining shaft S2, the workpiece holder 30B prevents the phenomenon from being separated from the original position to secure improved processing stability. It is an essential component.

On the other hand, in this embodiment, the X-axis pitch correction block (31a) and the Y-axis pitch correction block (32a) stacked on the movable support (30A) through vertical traction compression are pressed and fixed in a surface contact state, It further includes a traction compression type restraint unit 33 for fixing the workpiece holder 30B in place.

In addition, pitch adjustment holes 31a-a, 32a-a communicating vertically with each other are formed in the upper and lower stacked X-axis pitch correction blocks 31a and Y-axis pitch correction blocks 32a to penetrate.

In addition, the traction compression type restraint unit 33 includes a traction cylinder 33a through which the lifting rod 33b passes through the pitch adjustment holes 31a-a, 32a-a; A traction compression head 33c that is fixed to the upper end of the lifting rod 33b and is attached to the upper surface of the pitch adjustment hole 31a-a of the X-axis pitch correction block 31a stacked by the lowering of the lifting rod 33b. ) is included.

At this time, the traction compression head (33c) is composed of a disk body, the lower edge of the traction compression head (33c) is formed with an inclined support portion of the inclined surface structure.

In addition, on the upper portion of the pitch adjustment hole (31a-a) formed in the X-axis pitch correction block (31a), an annular shoulder shoulder (31a-b) that is attached to the bottom surface of the edge of the traction compression head (33c) is formed in communication .

At this time, the diameter of the traction compression head 33c is smaller than the annular shoulder shoulder 31a-b and is configured to have a relatively larger diameter than the pitch adjustment holes 31a-a and 32a-a, Between the inner diameter of the (31a-b) and the outer diameter of the traction compression head (33c), sufficient clearance for pitch adjustment is formed, and by the lowering of the lifting rod, the traction compression head (33c) is an annular shoulder shoulder (31a-b) It is configured so that the bottom of the edge is attached to the top of the annular shoulder.

That is, the X-axis pitch correction block 31a and the Y-axis pitch correction block 32a move within the range of the clearance to correct the pitch of the workpiece holder 30B.

Therefore, by moving the X-axis direction pitch correction unit 31 in the X-axis direction and the Y-axis (front and back) direction pitch correction unit 32 in the Y-axis direction, the workpiece holder 30B is moved to the machining axis S2. ) The movable support 30A matched to the center is vertically traction-compressed by the traction-pressing type restraint unit 33 as shown in FIG. 7 , and is fixed to the base plate 10 to be standardized.

That is, the traction compression type constraint unit 33 is moved in the X-axis direction of the pitch correction unit 31 in the X-axis direction constituting the movable support 30A and the Y-axis (front and rear) direction of the pitch correction unit 32 . During the pitch adjustment process in which the workpiece holder 30B is aligned with the center of the machining shaft S2 by moving in the axial direction, the lifting rod 33b of the traction cylinder 33a is raised to raise the workpiece through the movable support 30A. By moving the pitch of the holder 30B in the horizontal direction, a pitch correction process is performed to align with the center of the machining axis S2.

And, when the pitch correction process is completed, the traction cylinder 33a of the traction compression type restraint unit 33 lowers the lifting rod 33b, and the traction compression head 33c is formed on the pitch correction block for the X-axis. Attach the bottom of the edge to the upper part of (31a-b) in an annular shape.

Therefore, the upper and lower pitch correction blocks for the X-axis (31a) and the pitch correction block for the Y-axis (32a) are compressed in the Z-axis (vertical) direction by the traction compression head 33c, and as a result, these pitch correction blocks for the X-axis (31a) and the pitch correction block for the Y-axis (32a) are fixed by friction with each other to form a surface contact state.

Thus, the pitch correction block 31a for the X-axis and the pitch correction block 32a for the Y-axis constituting the movable support 30A are rubbed into a surface contact state by traction compression by the traction compression type constraint unit 33 and are standardized. As a result, even if an external force is provided through the tool installed on the machining shaft S2, the movable support 30A and the workpiece holder 30B are deviated from their original positions and deviated from the center of the machining shaft S2. can be

In addition, in this embodiment, the lifting rod 33b of the traction cylinder 33a constituting the traction compression type restraint unit 33, and the traction compression head 33c that is annularly attached to the annular shoulder shoulder 31a-b. A tilting connection part 34 is provided between them.

According to this embodiment, the tilting connection portion 34 includes a spherical socket 34a having a spherical contact surface 34a-a formed on the upper surface of the traction compression head 33c; It is installed on the upper portion of the lifting rod (33b) and includes a spherical member (34b) in contact with the inner wall of the spherical socket (34a) in a spherical (34b-a) structure.
Unexplained reference numeral B is a fastening bolt that penetrates the spherical member 34b and is fastened to the upper end of the lifting rod 33b.

Accordingly, the traction compression head 33c is fluidly tilted according to the inclination of the annular shoulder shoulder 31a-b as shown in FIG. 7 to closely contact the annular shoulder shoulder 31a-b at an optimal angle, as a result, the traction compression By stably pulling the head 33c stacked on the pitch correction block 31a for the X-axis and the pitch correction block 32a for the Y-axis, it is possible to achieve stable restraint therebetween.

1. Jig device for multi-axis machine tools
10. Base plate
20. Fixing jig part 20A. fixed support
20B. Workpiece holder 30. Movable jig part
30A. Movable support 30B. Workpiece holder
31. X-axis (left and right) pitch correction unit 31a. Pitch correction block for X axis
31a-a. Pitch Adjuster 31a-b. round shoulder chin
31b. Transfer cylinder for X axis 31b-a. back road
32. Y-axis (front-rear direction) pitch correction unit 32a. Pitch correction block for Y axis
32a-a. pitch adjuster 32b. Transfer cylinder for Y axis
32b-a. Advance and retreat rod 33. Traction compression type restraint unit
33a. Traction cylinder (for Z-axis traction) 33b. lifting rod
33c. Traction crimp head 33c-a. bevel support
34. Tilting connection 34a. spherical socket
34b. spherical member
100. Machine tool 110. Table
S1, S2. machining axis

Claims (4)

a base plate coupled to a table of a multi-axis machine tool having a pair of machining axes including a reference machining axis;
a fixing jig part fixedly disposed on the base plate and aligning the workpiece to the center of the reference machining axis among the machining axes formed in the multi-axis machine tool; and
It is disposed on the base plate, and among the machining axes formed in the multi-axis machine tool, it comprises a movable jig part for positioning and aligning the workpiece to the center of the remaining machining axes,
The movable jig unit includes: a workpiece holder for fixing the workpiece; It comprises a movable support that moves the workpiece holder horizontally in the X-axis direction and the Y-axis direction so that the workpiece holder is positioned and aligned at the center of the processing axis,
The movable support includes an X-axis pitch correction unit for receiving thrust in the X-axis direction and moving straight in the X-axis direction to correct the pitch of the workpiece holder in the X-axis direction; a Y-axis pitch correction unit that receives thrust in the Y-axis direction and moves straight in the Y-axis direction to correct the pitch of the workpiece holder in the Y-axis direction; and a traction compression type restraint unit for restraining the mutually stacked X-axis pitch correction unit and Y-axis pitch correction unit by traction and compression in a vertical direction,
The X-axis direction pitch correction unit includes: a pitch correction block for the X-axis that advances and retreats in the left-right direction, that is, the X-axis direction on the base plate; A transfer cylinder for the X-axis is connected to the pitch correction block for the X-axis to advance and retreat the pitch correction block for the X-axis in the X-axis direction through the advancing and retreating action of the advancing and retreating rod,
The Y-axis direction pitch correction unit,
a pitch correction block for the Y-axis installed on the base plate in a forward and backward structure in the Y-axis direction; It includes a transfer cylinder for the Y axis that connects the advance and retreat rods to the pitch correction block for the Y axis, and advances and retreats the pitch correction block for the Y axis in the Y axis direction through the forward and backward action of the advance and retreat rods,
In the upper and lower stacked X-axis pitch correction block and Y-axis pitch correction block, pitch adjustment holes communicating vertically with each other are formed to pass through,
The traction compression type restraint unit includes: a traction cylinder through which the lifting rod passes through the pitch adjusting hole; It is fixed to the upper end of the lifting rod and is configured to include a traction compression head that is attached to the upper surface of the pitch adjustment hole of the X-axis pitch correction block stacked by the descent of the lifting rod,
Between the lifting rod of the traction cylinder and the traction compression head,
a spherical socket formed on the upper surface of the traction compression head and having a spherical contact surface;
A jig for a multi-axis machine tool having an improved pitch correction structure, characterized in that it is provided on the upper part of the lifting rod and is provided with a tilting connection part including a spherical member that is in contact with the contact surface of the spherical surface of the spherical socket Device. delete delete delete

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