KR20240007341A - Jig for workpiece processing - Google Patents

Abstract

The present invention relates to a jig device used for fixing a workpiece when machining the workpiece. More specifically, the present invention separately consists of a lower body fixed to the workbench of a machine tool and an upper body that can be attached to or detached from the lower body, The concave gear of the curvik coupling is integrally formed in the lower body, and the convex gear of the curvik coupling is formed in the upper body. The upper body and the lower body adopt a coupling method by the curvik coupling, so that the upper body and the lower body are combined when machining the workpiece. The body and lower body can maintain a strong bonding force with each other, and the finished workpiece is discharged while still coupled to the upper body, and the new workpiece is assembled by combining another pre-set upper body with the existing lower body. It is a jig device for workpiece processing that can increase productivity by reducing the setting time and can produce products of uniform quality by setting the workpiece in a constant state.

Description

Jig device for workpiece processing {Jig for workpiece processing}

The present invention relates to a jig device used for fixing a workpiece when machining the workpiece. More specifically, the present invention separately consists of a lower body fixed to the workbench of a machine tool and an upper body that can be attached to or detached from the lower body, The concave gear of the curvik coupling is integrally formed in the lower body, and the convex gear of the curvik coupling is formed in the upper body. The upper body and the lower body adopt a coupling method by the curvik coupling, so that the upper body and the lower body are combined when machining the workpiece. The body and lower body can maintain a strong bonding force with each other, and the finished workpiece is discharged while still coupled to the upper body, and the new workpiece is assembled by combining another pre-set upper body with the existing lower body. It is a jig device for workpiece processing that can increase productivity by reducing the setting time and can produce products of uniform quality by setting the workpiece in a constant state.

Generally, machine tools such as machining centers and milling machines are equipped with a workbench for processing the workpiece, and the workpiece is fixed to the workbench to perform cutting processing. Whenever the workpiece is replaced, the position of the workpiece is fixed to a certain position. Therefore, it takes a lot of time to fix the workpiece in the correct position (setting work), and if the workpiece is not in the correct position, the dimensional accuracy of the processed product may decrease, resulting in defective products.

To prevent this, a separate jig device can be used by fixing it to the workbench of the machine tool, but this jig device also consumes a lot of time to set the workpiece in the correct position.

As a prior art related to the jig device used in machine tools, there is a quick workpiece replacement jig for a C&C milling machine proposed in Registration Patent No. 10-1759527.

In the above patent, a workbench installation part 111 (111') made of a vertical penetrating frame with a constant height through a plurality of support angles 101 and a stepped portion 112 on the inner circumferential surface is provided with a central cylinder mounting portion 113. A workpiece holder 110 formed on both sides at the center, a shelf 120 spaced apart from the lower part of the workpiece holder 110 to accommodate tools, and a shelf 120 formed vertically at the rear of the workpiece holder 110 and at the front. There is a main body 100 made of a gauge wall 130 with gauge rails 131 formed in the left and right directions; A plate that is seated and installed on the step portion 112 of each of the workbench installation parts 111 and 111' and has a plurality of clamp mounting holes 210 and 210' formed therethrough at regular intervals front, rear, left and right. An auxiliary workbench in the form of a body block (200); Guide rails 310 and 310' are formed in the front and rear lengths on both sides of the upper part of each workbench installation part 111 and 111', and are installed on each guide rail 310 and 310', A front in which a handle 331 is formed at the top, connecting the moving members 320 and 320', which form two sets of two opposing moving members moving backwards, and the moving members 320 and 320' on both sides of each group, An upper pressurizing part made up of a pair of rear pressurizing beams 330 and 330' and pressurizing members 340 formed on both lower sides of the pressurizing beams 330 and 330' to apply pressurizing force to the auxiliary work table 200. (300); Cylinder 410 (410') installed on the front and one side of each workbench installation part 111 (111'), and workbench installation part 111 (111') from the cylinder 410 (410') Emerging rods 420 and 420' located on the upper part of the step portion 112 and penetrating through, and a pressure plate 430 formed at the end of the emerging rods 420 and 420' to apply a pressing force to the auxiliary work table 200. ) (430') side pressing portion (400); It is configured to include a gauge 500 that is connected to an extension member whose end is axially fixed to a movable block 510 that is movably installed along the gauge rail 131 and moves left and right together with the movable block 510. A quick workpiece replacement jig for a C&C milling machine has been proposed. It has the advantage of being easy to adjust the position of the workpiece due to the gauge wall (130) formed by the gauge rail (131), but its configuration is very complicated and has a specific form, i.e. , there is a disadvantage in that it is difficult to adjust the position of workpieces of circular or complex shapes rather than square shapes.

Another prior art related to jigs is the one-touch jig proposed in Registration Patent No. 10-1687512.

The patent includes a one-touch jig that is installed on the table of a machine tool and allows the workpiece to be gripped with one touch. The one-touch jig includes a seating portion (1) for seating the workpiece; Waves that are installed on both sides of the seating portion (1) and spread outward due to the inclined surface and elastic force when the workpiece is lowered, and then retract inward again after the workpiece is lowered, and are caught on the top of the workpiece, allowing the workpiece to be held with one touch. Branch (2); It consists of a release part (3) installed on the seating part (1) to rotate the gripping part (2) downward to release the gripped workpiece, and is provided at the bottom of the seating part (1) It includes a support part (4) that can maintain the height of the workpiece held from the constant level and adjust the height, wherein the support part (4) has an upper support (41) at the center bottom of the seating part (1). , the rotor 42 and the lower strut 43 are sequentially coupled, the upper strut 41 has a screw portion formed at the bottom, and the lower strut 43 has a structure into which the upper strut 41 is inserted. , the rotor 42 is structured to be coupled to the upper end of the upper strut 41 and coupled to the threaded portion of the lower strut 43, and the seating portion 1 includes a rectangular seating plate 11; It consists of an extension plate (12) arranged to extend from both sides of the seating plate (11), wherein the gripping part (2) is installed on the extension plate (12), and the release part (3) is arranged to extend from both sides of the seating plate (11). ) and the extension plate 12. A one-touch jig has been proposed, which can be used to fix relatively lightweight objects. However, in the case of heavy objects, the jig may be damaged when fixed by the one-touch method, especially The cutting load may cause the jig to be damaged or the workpiece to vibrate.

Republic of Korea Patent Publication No. 10-1759527 (announced on July 19, 2017) Republic of Korea Patent Publication No. 10-1687512 (announced on December 16, 2016)

Therefore, the present invention provides a jig device used for fixing a workpiece when processing a workpiece, and the jig device includes a lower body fixed to the workbench of a machine tool and an upper body that can be attached and detached to the lower body. The lower body is formed with a concave gear of the curvic coupling in an integrated form, and the upper body is formed with a convex gear of the curvic coupling, and the upper body and the lower body adopt a coupling method by the curvic coupling to secure the workpiece. During machining, the upper body and lower body can maintain a strong bond with each other, and the finished workpiece is discharged while still coupled to the upper body, and the new workpiece is attached to the existing lower body by attaching another preset upper body to the existing lower body. The purpose is to provide a jig device for workpiece processing that can increase productivity by reducing the setting time of the workpiece by combining it, and can produce products of uniform quality by setting the workpiece in a constant state.

In addition, three guide bar coupling holes are formed at equal intervals in the lower body, a guide bar is fixedly coupled to the guide bar coupling hole, and three guide holes are formed in the upper body so that the guide bar can be inserted, Another purpose is to provide a jig device for workpiece processing in which the gear teeth formed on the upper body and the lower body can be smoothly combined to complete the coupling of the curvic coupling by guiding the coupling position of the upper body and lower body to a certain position. there is.

In addition, a through hole is formed in the center of the upper body, a main shaft is fixedly coupled to the through hole, and a through hole is formed in the center of the lower body, and the through hole allows the rotation of the driving ring along with the drive ring. The components for this are combined, and when the upper body and lower body are combined, the main shaft enters the inside of the driving ring, and as the upper body and lower body are combined, meshing occurs between each gear tooth, thereby forming a curvic coupling, and the worm As the driving ring rotates in accordance with the rotation of the screw, a strong vertical force is generated between the main shaft and the driving ring, allowing a strong bonding force to be obtained between the upper body and the lower body, preventing the workpiece from shaking during processing even if the cutting load is large. Another purpose is to provide a jig device for processing workpieces.

In addition, a plurality of balls are fastened to the outer peripheral surface of the driving ring, and a worm screw is installed on one side of the driving ring. When the worm screw is rotated, the balls move along the threads formed on the worm screw, and the movement of the balls The driving ring is rotated, and as the driving ring is rotated, the protrusion formed on the driving ring moves into the fastening groove formed on the main shaft, thereby providing a jig device for workpiece processing that can further increase the bonding force between the upper body and the lower body. There is a purpose.

The jig device for processing workpieces according to the present invention is a jig device used for fixing workpieces when processing workpieces, and includes a lower body (10) that is fixed to the workbench of a machine tool and on which a concave gear 11 coupled with a curvic coupling is formed. ) and an upper body 20 that meshes with the lower body 10 and forms a convex gear 21 of the curvic coupling, and the upper body 20 and the lower body 10 are the upper body It is characterized in that the convex gear 21 and the concave gear 11 formed in (20) and the lower body 10, respectively, are meshed together in the form of a curvic coupling and can be coupled or released. .

The jig device for processing workpieces according to the present invention separately consists of a lower body fixed to the workbench of a machine tool and an upper body that can be attached to or detached from the lower body, and the concave gear of the curvic coupling is integrated into the lower body. The upper body is formed with a convex gear of a curvic coupling, and the upper body and the lower body adopt a coupling method by the curvic coupling, so that the upper body and the lower body can maintain a strong coupling force with each other when machining the workpiece. Finished workpieces are discharged while still connected to the upper body, and new workpieces are combined with another pre-set upper body to the existing lower body, thereby reducing workpiece setting time and increasing productivity. There is a significant effect of being able to produce a product of uniform quality by setting the workpiece. Three guide bar coupling holes are formed at equal intervals in the lower body, and a guide bar is fixedly coupled to the guide bar coupling hole. Three guide holes are formed in the upper body so that the guide bar can be inserted, and by guiding the coupling position of the upper body and lower body to a certain position, the gear teeth formed on the upper body and lower body are smoothly combined to form a curved coupler. With the effect of completing the coupling, a through hole is formed in the center of the upper body, a main shaft is fixedly coupled to the through hole, a through hole is also formed in the center of the lower body, and a drive is formed in the through hole. Components for the rotation of the driving ring are combined with the ring, and when the upper body and lower body are combined, the main shaft enters the inside of the driving ring, and as the upper body and lower body are combined, meshing occurs between the gear teeth, creating a curvature. The coupling is connected, and as the driving ring rotates according to the rotation of the worm screw, a strong vertical force is generated between the main shaft and the driving ring, allowing a strong coupling force to be obtained between the upper body and the lower body, even if the cutting load is large. There is a significant effect of preventing the workpiece from shaking during processing. A plurality of balls are fastened to the outer peripheral surface of the driving ring, a worm screw is installed on one side of the driving ring, and when the worm screw is rotated, the worm screw The ball moves along the formed screw thread, and the driving ring is rotated by the movement of the ball. As the driving ring rotates, the protrusion formed on the driving ring enters the fastening groove formed on the main shaft, thereby increasing the coupling force between the upper body and the lower body. There is a notable effect that can further increase.

1 is a perspective view of the overall configuration of the present invention.
Figure 2 is an exploded configuration diagram of the present invention.
Figures 3 and 4 are partial configuration diagrams of the present invention
Figure 5 is a diagram illustrating the state of use of the present invention
Figure 6 is a cross-sectional configuration of the present invention
Figure 7 is a combination progress chart of the present invention
Figure 8 is a diagram illustrating the operation of the present invention.

The present invention relates to a jig device used for fixing a workpiece when machining the workpiece. More specifically, the present invention separately consists of a lower body fixed to the workbench of a machine tool and an upper body that can be attached to or detached from the lower body, The concave gear of the curvik coupling is integrally formed in the lower body, and the convex gear of the curvik coupling is formed in the upper body. The upper body and the lower body adopt a coupling method by the curvik coupling, so that the upper body and the lower body are combined when machining the workpiece. The body and lower body can maintain a strong bonding force with each other, and the finished workpiece is discharged while still coupled to the upper body, and the new workpiece is assembled by combining another pre-set upper body with the existing lower body. It is a jig device for workpiece processing that can increase productivity by reducing the setting time and can produce products of uniform quality by setting the workpiece in a constant state.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of the overall configuration of the present invention, Figure 2 is a separate configuration diagram of the present invention, and Figures 3 and 4 are partial configuration diagrams of the present invention, and the jig device for processing workpieces according to the present invention is used when processing workpieces. In a jig device used to fix a workpiece, a lower body 10 is fixed to the workbench of a machine tool and has a concave gear 11 coupled with a curvic coupling, and the lower body 10 meshes with each other and a curvic It consists of an upper body 20 on which a convex gear 21 of the coupling is formed, and the upper body 20 and the lower body 10 are formed on the upper body 20 and the lower body 10, respectively. It is characterized in that the convex gear 21 and the concave gear 11 are meshed with each other in the form of a curvilinear coupling and can be coupled or released from the coupled state.

First, the lower body 10 in the shown form has a base portion in the shape of a square plate, and bolt holes 10b are formed at each of the four corners for fixing to the workbench, and a curvy coupling is formed in a circular shape at the top. Gear teeth are formed for this purpose, and the gear teeth are provided as concave gear teeth (11) for coupling the two-piece curvic coupling.

An upper body 20 is installed on the upper part of the lower body 10, in which a convex gear 21 is formed to mesh with the concave gear 11 of the lower body 10, and the convex gear 21) is formed integrally with the upper body 20, and in some cases, the upper body 20 and the convex gear 21 can be manufactured as separate types rather than integrated, and the lower body 10 and the concave gear 21 ( 11) It can also be manufactured as a separate type rather than an integrated type.

A plurality of tap holes can be formed in the upper body 20 to fix the workpiece, and the tap holes can be configured to support the workpiece by combining posts, etc., and a separate fixing device is added to fix the workpiece. It can be configured, or a “T” shaped groove can be formed to attach the fixing jig.

Therefore, the upper body 20 and the lower body 10 can be maintained or released from the coupled state by engaging gear teeth in the form of a curvic coupling, and after the curvic coupling is coupled, the workpiece can be processed. Therefore, no matter what type of cutting force is applied in the direction of the axis and circumferential surface of the upper body 20, the position of the upper body 20 is not distorted because the connection between the gear teeth is completed.

Accordingly, as shown in FIG. 5, the workpiece to be processed can be quickly replaced by setting the workpiece to be processed on the upper body 20 and then coupling the upper body 20 to the lower body 10 again.

In addition, three guide bar coupling holes (11b) are formed at equal intervals in the lower body (10), a guide bar (12) is fixedly coupled to the guide bar coupling holes (11b), and the upper body (10) Three guide holes (20b) are formed so that the guide bar (12) can be inserted into the upper body (10) and the lower body (20) by guiding the coupling position of the upper body (10) and the lower body (20) to a certain position. Gear teeth for coupling the curvic couplings formed on the body 20 can be smoothly coupled to each other.

In the illustrated embodiment, a total of three guide bar coupling holes (11b) are formed in the lower body (10) at intervals of 120°, and guide pins (12) are fixedly coupled to the guide bar coupling holes (11b). , a total of three guide holes (20b) are formed in the upper body (20) at positions corresponding to the positions where the guide bar (12) is installed, so that when the upper body (20) is coupled to the lower body (10), As the guide bar 12 is inserted into the guide hole 20b, the upper body 20 and the lower body 10 are naturally coupled, so the upper body 20 and the lower body 10 can always be coupled at a constant position. , In this state, the gear teeth formed on the upper body 20 and the lower body 10 are stably engaged, thereby completing the curvature coupling.

Figure 6 is a cross-sectional configuration diagram of the present invention, and Figure 7 is a combined progress diagram of the present invention. A movable rod 12a is installed in the center of the guide bar 12, and the movable rod 12a is a guide bar ( 12), the moving rod 12a receives a force pushed to the outside of the guide bar 12 by the spring 12b stored inside the guide bar 12, and the moving rod 12a is guided along the moving path by the stopper bolt 12c. It is prevented from falling outside of (12).

In other words, this moving rod 12a serves as a damper to absorb the shock due to the elasticity of the spring 12b even if a shock occurs when the upper body 20 is mounted on the lower body 10.

In addition, a central hole 20a is formed in the center of the upper body 20, the main shaft 22 is fixedly coupled to the central hole 20a, and a central hole 10a is formed in the center of the lower body 10. ) is formed, and a driving ring 31 is installed below the center hole 10a, and when the upper body 20 and the lower body 10 are combined, the main shaft 22 is inserted into the driving ring 31. Upon entering, the upper body 20 and lower body 10 are combined.

That is, a central hole 20a is formed in the center of the upper body 20, and a plurality of key grooves 21b are formed along the central hole 20a, so that the main key 25 is attached. The shaft 22 is inserted along the key groove 21b and then fixedly coupled to the upper body 20 by a fastening bolt (not shown), and a driving ring ( 31) is installed, so that when the upper body 20 is moved in the direction in which it is coupled with the lower body 10, the body of the main shaft 22 enters the inside of the driving ring 31 and the upper body 20 and the lower body 10 are connected to each other. The basic coupling of the body 10 is achieved, and the circumference of the main shaft 22 is provided with a number of fastening grooves 22a corresponding to the number of protrusions 31a provided on the inner diameter of the driving ring 31. Because it is formed, the main shaft 22 is naturally guided into the driving ring 31.

Looking at this configuration in more detail with reference to FIG. 8, a plurality of balls 32 are mounted on the outer peripheral surface of the driving ring 31, and a worm screw 30 is installed on one side of the driving ring 31, When the worm screw 30 is rotated, the ball 32 moves along the thread formed on the worm screw 30, and the driving ring 31 is rotated by the movement of the ball 32, and the driving ring 31 As this is rotated, the protrusion 31a formed on the driving ring 31 goes deeper into the fastening groove 22a formed on the main shaft 22, thereby increasing the coupling force between the upper body 20 and the lower body 10.

That is, the driving ring 31 is installed at the lower part of the lower body 10 and is supported by a lock nut 33 so that it can rotate within a certain range, and on the outer peripheral surface of the driving ring 31 As shown in Figure 4, a plurality of balls 32 are mounted in each groove so that they can rotate without falling out, and some of the balls 32 among the plurality of balls 32 are in close contact with the thread formed on the worm screw 30. , When the worm screw 30 rotates, the ball 32 moves along the thread of the worm screw 30, and the driving ring 31 rotates according to the movement of the ball 32, as shown in Figure 8. In the embodiment, the shaft 38 is coupled to the worm screw 30 with a key or the like to rotate the worm screw 30, and a hexagonal spanner surface and a wrench groove 38a are formed on one side of the shaft 38 at the same time. It is configured so that the worm screw 30 can be rotated by rotating the shaft 38 using an appropriate tool. In some cases, the shaft 38 and the worm screw 30 can be manufactured as one piece. .

At this time, a protrusion (31a) is formed inside the driving ring (31), so when the driving ring (31) is rotated, the protrusion (31a) goes deeper into the fastening groove (22a) formed on the main shaft (22), thereby moving the upper part of the driving ring (31). The coupling strength between the body 20 and the lower body 10 is improved.

To elaborate, when the main shaft 22 is lowered in the state of FIG. 4, the protrusion 31a of the driving ring 31 is located at the “A” portion of the fastening groove 22a formed on the main shaft 22, When the driving ring 31 rotates clockwise due to the rotation of the worm screw 30, the engagement position of the protrusion 31a moves from the “A” portion to the “B” portion, and thus the main shaft 22 and Since a mechanical force is formed by the interaction of the driving ring 31, the upper body 20 and the lower body 10 are eventually strongly coupled.

In addition, an inclined portion 22b is formed on one side of the fastening groove 22a formed on the main shaft 22, so that the more the protrusion 31a of the driving ring 31 enters the fastening groove 22a, the upper By moving the body 20 toward the lower body 10, the coupling force between the convex gear 21 and the concave gear 11 increases.

That is, an inclined portion 22b is formed on one side of the fastening groove 22a, so that as the driving ring 31 rotates, the engaging position of the protrusion 31a moves from the “A” portion to the “B” portion. The axial force, that is, the vertical force, which pulls the main shaft 22 toward the lower surface of the driving ring 31 due to the inclined portion 22b increases, ultimately causing a gap between the upper body 20 and the lower body 10. The bonding strength is greatly improved.

In the above-described embodiment, the inclined surface formed on the protrusion 31a of the driving ring 31, which is a relative combination with the separate inclined portion 22b around the fastening groove 22a of the main shaft 22, is formed at the same angle. It is more effective in maintaining the coupled state and forming mechanical force, and this can be easily confirmed by estimating the state of operation in FIG. 6.

In addition, a screw support 36 is installed on one side of the worm screw 30, and the position of the screw support 36 is fixed by a set screw 37, so that when the worm screw 30 is rotated By preventing the worm screw 30 from being deformed in a direction perpendicular to the central axis due to mechanical force, the adhesion between the worm screw 30 and the driving ring 31 can always be maintained constant.

The non-illustrated symbols are the O-ring (24), the position fixing bolt (34), and the cover (35). The O-ring (24) is used for cutting oil, etc., through the gap between the main shaft (22) and the upper body (20) when machining the workpiece. It is designed to prevent foreign substances from penetrating, and the positioning bolt 34 is positioned so that it can always rotate in place even when the worm screw 30 rotates, and the cover 35 is attached to the lower body. It is attached to (20) by a number of bolts and is simply designed to prevent foreign substances from entering from the bottom, and the driving ring (31) is supported by the lock nut (33) and is in close contact with the lock nut (33). It will be rotated as is.

Ultimately, the jig device for processing workpieces according to the present invention separately consists of a lower body fixed to the workbench of a machine tool and an upper body that can be attached and detached from the lower body, and the lower body is equipped with a concave gear of a curvic coupling. It is formed as one piece, and the convex gear of the curvic coupling is formed on the upper body. The upper body and the lower body adopt a coupling method by the curvic coupling, so that the upper body and the lower body can maintain a strong coupling force with each other when machining the workpiece. , finished workpieces are discharged while still connected to the upper body, and new workpieces are combined with another pre-set upper body to the existing lower body, thereby reducing workpiece setting time and increasing productivity. There is a significant effect of being able to produce products of uniform quality by setting the workpiece in this condition. Three guide bar coupling holes are formed at equal intervals in the lower body, and a guide bar is fixedly coupled to the guide bar coupling hole. , Three guide holes are formed in the upper body so that the guide bar can be inserted, so that the coupling position of the upper body and the lower body is guided to a certain position, so that the gear teeth formed on the upper body and the lower body are smoothly combined, With the effect of completing the coupling of the coupler, a through hole is formed in the center of the upper body, the main shaft is fixedly coupled to the through hole, and a through hole is formed in the center of the lower body, and the through hole is formed in the center of the lower body. Components for rotation of the driving ring are combined with the drive ring. When the upper body and the lower body are combined, the main shaft enters the inside of the driving ring and the upper body and lower body are combined, causing meshing between each gear tooth. As the driving ring rotates according to the rotation of the worm screw, a strong vertical force is generated between the main shaft and the driving ring, and a strong coupling force can be obtained between the upper body and the lower body, reducing the cutting load. Even if it is large, it has a significant effect of preventing the workpiece from shaking during processing. A plurality of balls are fastened to the outer peripheral surface of the driving ring, a worm screw is installed on one side of the driving ring, and when the worm screw rotates, the worm The ball moves along the thread formed on the screw, and the driving ring rotates due to the movement of the ball. As the driving ring rotates, the protrusion formed on the driving ring enters the fastening groove formed on the main shaft, thereby creating a gap between the upper body and the lower body. It has a remarkable effect of further increasing the bonding strength.

10. Lower body 10a. Central hole 10b. bolt hole
11. Concave gear 11a. Central hole 11b. Guide bar coupling hole
12. Guide bar 12a. Mobile road 12b. spring
12c. stopper bolt
20. Upper body 20a. Central hole 20b. guide hall
21. Convex gear 21a. Central hole 21b. Key Home
22. Main shaft 22a. Fastening groove 22b. slope
23. Disc cover 24. O-ring 25. Key
30. Worm screw 31. Driving ring 31a. spin
32. Ball 33. Lock nut 34. Position fixing bolt
35. Cover 36. Screw support 37. Set screw
38. Shaft 38a. Wrench groove

Claims (5)

In the jig device used to fix the workpiece when processing the workpiece,
A lower body 10 is fixed to the workbench of a machine tool and forms a concave gear 11 of the curvik coupling, and a convex gear 21 of the curvik coupling is formed by meshing with the lower body 10. It consists of an upper body 20, and the upper body 20 and the lower body 10 include a convex gear 21 and a concave gear 21 formed on the upper body 20 and the lower body 10, respectively. 11) A jig device for machining workpieces, which is characterized in that it can be joined or released by engaging each other in the form of a curvic coupling.
According to paragraph 1,
Three guide bar coupling holes (11b) are formed at equal intervals in the lower body (10), a guide bar (12) is fixedly coupled to the guide bar coupling holes (11b), and a guide is provided in the upper body (10). Three guide holes 20b are formed so that the bar 12 can be inserted, so that the upper body 10 and the lower body 20 are guided to a certain position by guiding the combined position of the upper body 10 and the lower body 20 ( 20) A jig device for workpiece processing, characterized in that the gear teeth for coupling the curvic couplings formed in each can be smoothly coupled to each other.
According to paragraph 1,
A central hole 20a is formed in the center of the upper body 20, the main shaft 22 is fixedly coupled to the central hole 20a, and a central hole 10a is formed in the center of the lower body 10. A driving ring 31 is installed below the central hole 10a, and when the upper body 20 and the lower body 10 are combined, the main shaft 22 enters the driving ring 31. A jig device for processing workpieces, characterized by combining the upper body (20) and the lower body (10).
According to paragraph 3,
A plurality of balls 32 are mounted on the outer peripheral surface of the driving ring 31, and a worm screw 30 is installed on one side of the driving ring 31. When the worm screw 30 rotates, the worm screw 30 ) The ball 32 is moved along the thread formed in the ball 32, and the driving ring 31 is rotated by the movement of the ball 32. As the driving ring 31 is rotated, the protrusion 31a formed on the driving ring 31 ) A jig device for workpiece processing characterized in that the coupling force between the upper body (20) and the lower body (10) increases as it goes deeper into the fastening groove (22a) formed on the main shaft (22).
According to paragraph 4,
An inclined portion 22b is formed on one side of the fastening groove 22a formed on the main shaft 22, so that the closer the protrusion 31a of the driving ring 31 enters the fastening groove 22a, the upper body ( A jig device for workpiece processing characterized in that the coupling force between the convex gear 21 and the concave gear 11 is increased by moving the 20) toward the lower body 10.