TWI516332B - Processing fixture - Google Patents

Description

Processing fixture

The invention is related to processing and treatment; in particular, it relates to a processing fixture which provides a stable bonding effect.

It is known that processing jigs have various structural forms due to different processing methods and uses. For example, the processing jig used in electric discharge machining generally includes a base and a workpiece holder, and the base is fixed in an electric discharge machining tool, the workpiece seat is provided with a metal piece to be processed, and the workpiece seat is detachable The manner of the base is configured to facilitate removal of the workpiece holder and the metal piece to be processed and re-replacement. The aforementioned processing jig has recyclability and is suitable for producing a large number of products with low variability and low variability. Moreover, in order to facilitate the quick assembly of the workpiece holder on the base, the base of the known processing fixture and the workpiece holder are aligned with the concave-convex structure, which is common on the surface of the base. A plurality of bumps are disposed on the plurality of bumps, and the bumps are symmetrically disposed, and a plurality of grooves are disposed on the surface of the workpiece holder to achieve the alignment assembly by the combination of the bumps and the grooves.

However, the actual size of each bump and each groove has a machining margin problem, so that the bump and the groove are likely to interfere when being fitted, so that a gap is left between the bump and the groove, and the fitting is different. When the clearance between the bump and the groove of the part is uneven, the processing precision of the metal piece to be processed mounted on the workpiece base may be inaccurate, and the effect is that when the clearance is excessively uneven, the influence is to be processed. The processing precision error of the metal parts is more remarkable.

In view of the above, an object of the present invention is to provide a processing jig that ensures the processing accuracy of a metal member to be processed.

In order to achieve the above object, the processing jig provided by the present invention comprises a base, a plurality of bumps and a workpiece holder. The pedestal has a surface; each of the protrusions is disposed on the pedestal and protrudes from the surface of the pedestal, and each of the protrusions has a combined surface; the workpiece holder is detachably disposed with the pedestal. The workpiece holder has a plurality of pairs of clamping blocks and a plurality of pairs of fixed blocks corresponding to each of the bumps on the base, and each of the pair of clamping blocks is provided with the protruding block, and each pair of clamping blocks has a facing surface The two restraining faces are respectively in contact with the bonding faces of the corresponding bumps, and each of the pair of fixing blocks is also provided with one of the bumps, and each pair of the fixed blocks has opposite facing faces and corresponding convex portions respectively The joint surface of the block is contacted; wherein each pair of clips is deformed by an external force such that the distance between the two restraining faces is a variable distance, and a fixed distance between the two clamping faces of each pair of fixed blocks .

The effect of the invention is to utilize the ability of each pair of clips to be moderately deformed by an external force, so as to effectively correct the clearance problem between the bumps existing on the base and the fixed blocks of the workpiece holder, and further Ensure the machining accuracy of the metal parts to be processed.

100‧‧‧Processing fixture

10‧‧‧ Pedestal

10a‧‧‧ surface

12‧‧‧First trench

14‧‧‧Second trench

20‧‧‧Bumps

22‧‧‧ top surface

24‧‧‧ joint surface

30‧‧‧Workpiece holder

30a‧‧‧ surface

32‧‧‧First groove

34‧‧‧second groove

36‧‧‧Fixed blocks

36a‧‧‧ clamping surface

38‧‧‧Clamps

38a‧‧‧Constrained

38b‧‧‧ bottom

H1‧‧‧ first height

H2‧‧‧second height

H3‧‧‧ third height

1 is an exploded perspective view of a processing jig according to a preferred embodiment of the present invention.

Fig. 2 is a perspective view showing the combination of the processing jig shown in Fig. 1.

Figure 3 is a plan view showing the bonding relationship between the bumps on the base and the fixed blocks and the blocks of the workpiece holder.

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3;

Figure 5 is a cross-sectional view taken along line 5-5 of Figure 3;

The present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 to FIG. 3, which is a processing tool 100 according to a preferred embodiment of the present invention, including There is a base 10, a plurality of bumps 20 and a workpiece holder 30.

The base 10 is fixedly mounted on a processing tool (not shown). In the present embodiment, the base 10 is a disk body. The pedestal 10 has a surface 10a, and two first trenches 12 and two second trenches 14 are recessed from the surface 10a. The two first trenches 12 are disposed back and forth along the same X-axis. The two second grooves 14 are disposed forward and backward along the same Y-axis direction, and the X-axis direction is perpendicular to the Y-axis direction.

The bumps 20 are respectively disposed in the first trenches 12 and the second trenches 14 of the susceptor 10, and are preferably disposed close to the periphery of the susceptor 10. 4 and FIG. 5, the upper half of each of the protrusions 20 protrudes from the surface 10a of the base 10, and the protruding portion has a top surface 22 and two joint surfaces 24, wherein each of the bumps 20 The vertical distance from the top surface 22 to the surface 10a of the base 10 is a first height H1, and the two joint surfaces 24 are disposed downward from the top surface 22 of the associated bump 20 and outwardly.

The workpiece holder 30 is detachably disposed with the base 10, the workpiece holder 30 has a surface 30a, and two first grooves 32 and two second grooves 34 are recessed from the surface 30a. The two first grooves 32 are disposed forward and backward along the X-axis, and the two second grooves 34 are disposed forward and backward along the Y-axis, and each adjacent first groove 32 is defined herein. A fan-shaped fixing block 36 is formed between each of the second recesses 34. As shown in FIG. 3, the workpiece holder 30 of the embodiment has four fixing blocks 36, and the side of each fixing block 36 is a clip. Holding the surface 36a, since the workpiece holder 30 has a solid structure, and The groove width of each of the first groove 32 and each of the second grooves 34 is not large, so that the facing faces of the two adjacent fixing blocks 36 are always at a fixed distance.

The workpiece holder 30 is further provided with a pair of independent structural clips 38 in each of the first recess 32 and each of the second recesses 34. As shown in FIG. 5, each pair of clips 38 is located adjacent to the workpiece holder. At the 30th circumference, each pair of clips 38 has a facing two restraining surface 38a, and a bottom surface 38b between the two restraining surfaces 38a, the vertical distance of the bottom surface 38b to the top edge of the pair of clips 38 It is a second height H2. Moreover, the vertical distance between the first groove 32 of the workpiece holder 30 and the groove bottom of each of the second grooves 34 to the surface 30a of the workpiece holder 30 is a third height H3, and the third height H3 is greater than The second height H2 is such that each of the pair of clamping blocks 38 can be moderately deformed when subjected to a side outward force that is not perpendicular to the surface 30a of the workpiece holder 30 so that the opposing faces 38a face each other. The distance is a variable distance. Moreover, the second height H2 is greater than the first height H1, so that the top surface 22 of the bump 20 is prevented from inadvertently touching the corresponding bottom surface 38b.

In the above, the two restraining faces 38a of each pair of the clamping blocks 38 of the workpiece holder 30 are inclined with the corresponding bonding faces 24, and the two clamping faces 36a of each pair of fixing blocks 36 are also matched with the corresponding combination. Face 24 is a bevel. Therefore, as shown in FIG. 3, when the workpiece holder 30 is assembled to the base 10, the through-bonding surface 24, the clamping surface 36a, and the restraining surface 38a are in inclined contact, so that each pair of the clamping blocks 38 of the workpiece holder 30 is smooth. A corresponding bump 20 is embedded, and each pair of fixed blocks 36 is also embedded with the bump 20. And since each of the pair of clamping blocks 38 is located near the circumference of the workpiece holder 30, the front half of each of the projections 20 is a pair of the two restraining faces 38a, and the second half of each of the projections 20 is the two-clamping portion. The holding surface 36a is firmly clamped.

Each pair of clamping blocks 38 and each pair of fixing blocks 36 of the above-mentioned workpiece holder 30 are configured corresponding to the respective bumps 20 on the base 10, when Each of the pair of fixing blocks 36 is fitted to the corresponding bump 20 and, due to a processing margin problem, causes a possible clearance to be generated, and the moderate deformation provided by each of the pair of clips 38 is corrected to correct the presence on the base 10. The clearance between the bumps 20 and the respective fixing blocks 36 of the workpiece holder 30 ensures the machining accuracy of the metal parts to be processed. At the same time, each of the pair of fixing blocks 36 maintains a fixed distance between the two clamping faces 36a, and can resist the shearing damage to the pair of clamping blocks 38 when the processing jig 100 receives the lateral outward force.

The above description is only a preferred embodiment of the present invention, wherein each of the bumps 20 is combined with the base 10 in a separately assembled manner, but it is not excluded that the bumps are directly formed on the surface of the base to provide Matching effect. Therefore, equivalent changes to the scope of the invention and the scope of the patent application are intended to be included in the scope of the invention.

100‧‧‧Processing fixture

10‧‧‧ Pedestal

10a‧‧‧ surface

12‧‧‧First trench

14‧‧‧Second trench

20‧‧‧Bumps

22‧‧‧ top surface

24‧‧‧ joint surface

30‧‧‧Workpiece holder

30a‧‧‧ surface

32‧‧‧First groove

34‧‧‧second groove

36‧‧‧Fixed blocks

38‧‧‧Clamps

Claims (8)

A processing fixture includes: a base having a surface; a plurality of bumps disposed on the base and protruding from the surface of the base, wherein each of the bumps has a combined surface; and a workpiece holder Disposably disposed in the detachable manner, the workpiece holder has a plurality of pairs of blocks and a plurality of pairs of fixed blocks corresponding to each of the bumps on the base, and the bumps are disposed between each pair of blocks And each pair of clamping blocks has opposite facing faces respectively contacting the bonding faces of the corresponding bumps, and each of the pair of fixing blocks is also provided with the bumps, and each pair of fixing blocks has a phase The facing clamping faces are respectively in contact with the bonding faces of the corresponding bumps; the front half of each bump is held by a pair of clamping blocks, and the rear half of each bump is held by a pair of fixing blocks Wherein each pair of clips is deformed by an external force such that the distance between the two restraining faces is a variable distance, and the two clamping faces of each pair of fixed blocks are at a fixed distance. The processing jig of claim 1, wherein the bumps of the pedestal are provided with a bump at each end of an X-axis, and each of the two ends of the Y-axis is also disposed. a bump, wherein the X axis is perpendicular to the Y axis. The processing jig of claim 2, wherein the workpiece holder has two first grooves and two second grooves, the two first grooves are disposed along the X-axis, and the second grooves are along The Y-axis is disposed; wherein a fixed block is formed between the adjacent one of the first groove and the second groove, and the adjacent two fixed blocks have the two clamping faces facing each other. The processing jig of claim 3, wherein each of the first recess and the second recess of the workpiece holder are respectively provided with a pair of clips. The processing jig of claim 4, wherein the base has two first grooves and two second grooves, the two first grooves are disposed along the X-axis, and the two second grooves are along The Y-axis is disposed, and each of the first groove and each of the second grooves is respectively provided with the protrusion, and each of the protrusions has a first height protruding from a portion outside the surface of the base; each pair There is a bottom surface between the clamping blocks, and the distance from the bottom surface to the top edge of the pair of clamping blocks is a second height, and the second height is greater than the first height. The processing jig according to claim 5, wherein a distance between each of the first grooves of the workpiece holder and a groove bottom of each of the second grooves to a surface of the workpiece seat is a third height, and the third height is greater than The second height. The processing jig of claim 6, wherein the two joint faces of the bumps of the base are inclined downward from the top edge of the bump and outward; the two of each pair of the workpiece seats The restraining surface is a bevel with the corresponding joint surface. The processing jig of claim 6 or 7, wherein the two joint faces of the bumps of the base are disposed downward from the top edge of the bump and outwardly; the pair of fixed blocks of the workpiece block The two clamping faces are inclined with the corresponding bonding faces.