TWI804129B - Fixture positioning block - Google Patents

Abstract

A fixture positioning block, at least one of the two sides of the upper part is provided with a first split groove and a second split groove, the first split groove and the second split groove run through the front and rear end surfaces of the fixture positioning block And the jig positioning block is cut to form an extension and an outer wing, wherein one end of the extension is connected to a main body of the jig positioning block, the other end is connected to the outer wing, the outer wing and the extension The parts together form an elastic body structure with compressive deformation capacity, which can be moderately deformed in response to external forces to eliminate fit tolerances.

Description

Fixture positioning block

The invention is related to accessories of processing jigs, in particular to a jig positioning block capable of adapting to deformation.

The known processing jig includes a base and a workpiece seat, the base is fixed on the body of the machine tool without moving, the workpiece seat provides the object to be processed to be fixed on it, and the workpiece seat can be separated from the base The way to combine with the base, the aforementioned separate way can be manual operation or pneumatic control.

In order to ensure that the workpiece seat can be quickly positioned and combined with the base, a known method is to set a plurality of positioning blocks on the base, and to provide a slot on the side of the workpiece seat facing the base, through which the positioning block and the embedded Groove fit to achieve the purpose of fast positioning and combination. However, after the above-mentioned positioning block and slot are manufactured, there will be some tolerance due to machining more or less. When the positioning block and slot are matched with each other due to inherent tolerance problems, there will be a gap, or the size cannot be adjusted. When wear occurs due to precise fit, it will damage the positioning block and the slot, and even cause the processing fixture to fail to meet the use requirements.

In view of this, the purpose of the present invention is to provide a jig positioning block, which can eliminate the tolerance when the positioning block and the socket fit together, so that the workpiece seat and the base can be stably positioned and combined.

In order to achieve the above object, the present invention provides a jig positioning block, which is a block with a long axis, and the jig positioning block defines an upper part, a lower part, a left half and a right half, wherein The upper part has a top surface and two fitting surfaces, the two fitting surfaces are located on both sides of the top surface and arranged along the long axis, the distance between the two fitting surfaces is narrow at the top and wide at the bottom; and, At least one of the left half and the right half of the fixture positioning block has a first split groove and a second split groove, the first split groove and the second split groove are arranged along the long axis and run through the The front and rear end surfaces of the jig positioning block; the first split groove and the second split groove cut the jig positioning block to form an extension part and an outer wing part, wherein one end of the extension part is connected to the jig positioning block The other end is connected to the outer wing, and the outer wing has the fitting surface.

The effect of the present invention is that the positioning block is provided with a first sectional groove and a second sectional groove, so that the positioning block has a suspended extension and an outer wing. When the aforementioned outer wing is subjected to an external force, the outer wing and the outer wing The extensions are relatively deformable to eliminate tolerance problems.

In order to illustrate the present invention more clearly, preferred embodiments are given and detailed descriptions are given below in conjunction with drawings. Please refer to Fig. 1 to Fig. 3, the jig positioning block 10 of the first preferred embodiment of the present invention is a block with a long axis, the jig positioning block 10 has a top surface 10a, a bottom surface 10b, Two side surfaces and a front end surface 10c and a rear end surface 10d, and define an upper part H1, a lower part H2, a left half part W1 and a right half part W2 as shown in Figure 3, the aforementioned upper part H1, lower part H2, left half W1 and the right half W2 further divide the jig positioning block 10 into a first area A1, a second area A2, a third area A3 and a fourth area A4. In this embodiment, the first area A1 and the second area A2 is a symmetrical structure, the third area A3 and the fourth area A4 are symmetrical structures, but it should be noted that, based on the needs of practical applications, the first area A1 and the second area A2 may have an asymmetric structure, and the third area A3 and the fourth region A4 may also have an asymmetric structure, or one of the aforementioned combinations is a symmetric structure, and the other is an asymmetric structure.

The jig positioning block 10 has a perforation 11 in the middle part that runs through the top surface 10a and the bottom surface 10b, and the jig positioning block 10 passes through the perforation 11 through a locking member (not shown) to lock into the jig. One base, as shown in Figure 4, the lower part H2 of the aforementioned jig positioning block 10 is accommodated in the groove 22 of the base 20, and the upper part H1 of the aforementioned jig positioning block 10 is correspondingly embedded in one of the jigs. In the insertion groove 32 of the workpiece seat 30 , in order to facilitate quick alignment and assembly, it is known that the groove wall 32 a of the insertion groove 32 of the workpiece seat 30 is designed as an inclined plane.

The following describes the technical solution that the jig positioning block 10 of this embodiment can eliminate the fit tolerance. More specifically, the jig positioning block 10 passes through both sides of the upper part H1 (ie, the left half W1 and the right half W2) At least one side of them has an elastic body structure capable of deforming under pressure to achieve the purpose of eliminating fit tolerances. Based on the symmetrical structure of the first area A1 and the second area A2 in this embodiment, and for the sake of clear description, it is hereafter referred to as The structure of the first area A1 is described as an example.

Please refer to FIG. 1 and FIG. 5 , the two side surfaces of the upper part H1 of the jig positioning block 10 define a fitting surface 10e that cooperates with the groove wall 32a of the insertion groove 32, and the two fitting surfaces 10e are located on the top surface 10a The two sides are arranged along the long axis, and the distance between the two fitting surfaces 10e is narrow at the top and wide at the bottom. The first area A1 of the jig positioning block 10 includes a first split groove 13 and a second split groove 15, the first split groove 13 and the second split groove 15 are arranged along the long axis and run through The front end surface 10 c and the rear end surface 10 d of the jig positioning block 10 . Wherein, the first split groove 13 has a first open end 13a and a first closed end 13b, the first open end 13a is located on the top surface 10a, and the first closed end 13b is close to the fitting surface 10e; The two split grooves 15 have a second open end 15a and a second closed end 15b, the second open end 15a is located on the fitting surface 10e, the second closed end 15b is close to the top surface 10a, preferably, the first The second opening end 15a of the two split grooves 15 is located at the junction of the upper part H1 and the lower part H2.

As shown in FIG. 5, it can be known that the above-mentioned first sectional groove 13 is a groove extending downward and has a curved section, and the above-mentioned second sectional groove 15 is a groove extending upward and having two continuous curved sections. A sectional groove 13 and the second sectional groove 15 cut the jig positioning block 10 to form an extension 17 and an outer wing 19 , and define the jig positioning block 10 after excluding the extension 17 and the outer wing 19 The part is the main body 12, one end of the extension part 17 is connected with the main body 12, and the other end of the extension part 17 is connected with the outer wing part 19, and the outer wing part 19 is divided by a part connected with the extension part 17. The upper contact portion 19a and the lower contact portion 19b, wherein the length of the upper contact portion 19a of the outer wing portion 19 is greater than the length of the lower contact portion 19b, and the lower contact portion 19b has the fitting surface 10e.

The above-mentioned extension part 17 and the outer wing part 19 are suspended and jointly constitute the elastic body structure with compressive deformation capacity. More specifically, the part where the extension part 17 is connected to the main body 12 constitutes the first The fulcrum P1, the part where the outer wing portion 19 is connected to the extension portion 17 forms a second fulcrum P2. When the workpiece seat 30 intends to fit the base 20 through the jig positioning block 10 and there is a fit tolerance, the groove wall 32a of the embedded groove 32 of the workpiece seat 30 will first push against the outer wing 19 As the workpiece seat 30 approaches the base 20, the outer wing portion 19 will be slightly deflected by the second fulcrum P2, and the extension 17 will also be generated by the first fulcrum P1. Slight deflection is used to eliminate fit tolerances and maintain a good alignment support effect, so as to achieve the purpose of quickly positioning and combining the workpiece seat 30 with the base 20 .

The above-mentioned embodiment is illustrated by taking the symmetrical structure of the first area A1 and the second area A2 as an example, so the second area A2 also includes another set of first split groove 13, second split groove 15, extension portion 17 and Outer wing 19. It should be noted that, when the first area A1 and the second area A2 have an asymmetric structure, the inclination of the fitting surface 10e on the second area A2 must not be the same as that of the fitting surface 10e of the first area A1. The slope is limited, and the second region A2 is not limited to having the first split groove 13 and the second split groove 15 at the same time, it may only have the first split groove 13 or the second split groove 15 .

Figure 6 and Figure 7 show the jig positioning block 10A of the second preferred embodiment of the present invention, the structure of the upper part H1 of the jig positioning block 10A is the same as that of the jig positioning block 10 of the above-mentioned first preferred embodiment, different The lower part H2 of the jig positioning block 10A is not a converging tapered structure, and its end depends on the groove of the base.

The above description is only a preferred feasible embodiment of the present invention, and all equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the scope of the patent of the present invention.

[this invention] 10,10A: Fixture positioning block 10a: top surface 10b: bottom surface 10c: front face 10d: Rear end face 10e: Fitting surface 11: perforation 12: Subject 13: The first trench 13a: first open end 13b: the first closed end 15: The second split groove 15a: second open end 15b: second closed end 17: Extension 19: outer wing 19a: Upper Arrival 19b: Bottom Arrival 20: base 22: Groove 30: workpiece seat 32: slotting 32a: groove wall A1: The first area A2: Second area A3: The third area A4: The fourth area H1: upper part H2: lower part P1: the first fulcrum P2: Second fulcrum W1: left half W2: right half

Fig. 1 is a perspective view of a jig positioning block according to a first preferred embodiment of the present invention; Fig. 2 is a top view of the jig positioning block shown in Fig. 1; Fig. 3 is the front view of the jig positioning block shown in Fig. 1; Fig. 4 is a schematic diagram of the application of the fixture positioning block shown in Fig. 1; Fig. 5 is a sectional view in the direction of 5-5 of Fig. 2; Fig. 6 is a perspective view of a jig positioning block according to a second preferred embodiment of the present invention; and Fig. 7 is a front view of the jig positioning block shown in Fig. 6 .

10: Fixture positioning block

11: perforation

12: Subject

17: Extension

19: outer wing

Claims (6)

A jig positioning block, which is a block with a long axis, the jig positioning block defines an upper part, a lower part, a left half and a right half, wherein the upper part has a top surface and two fitting surfaces , the two fitting surfaces are located on both sides of the top surface and arranged along the long axis, the distance between the two fitting surfaces is narrow at the top and wide at the bottom; it is characterized in that: At least one of the left half and the right half of the fixture positioning block has a first split groove and a second split groove, the first split groove and the second split groove are arranged along the long axis and run through the The front and rear end surfaces of the jig positioning block; the first split groove and the second split groove cut the jig positioning block to form an extension part and an outer wing part, wherein one end of the extension part is connected to the jig positioning block The other end is connected to the outer wing, and the outer wing has the fitting surface. The jig positioning block according to claim 1, wherein the first split groove has a first open end and a first closed end, the first open end is located on the top surface, and the first closed end is close to the fitting surface; the second split groove has a second open end and a second closed end, the second open end is located on the fitting surface, and the second closed end is close to the top surface. The jig positioning block according to claim 2, wherein the second open end of the second split groove is located at the junction of the upper part and the lower part. The jig positioning block according to claim 2, wherein the outer wing part is divided into an upper contact part and a lower contact part by the part connecting the extension part as a boundary. The jig positioning block according to claim 4, wherein the length of the upper contact portion of the outer wing portion is greater than the length of the lower contact portion. The jig positioning block according to claim 1, wherein the first split groove and the second split groove are formed on the upper part of the jig positioning block.

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