Special-shaped piece positioning tool

Abstract

The utility model relates to the technical field of CNC machining, and discloses a special-shaped piece positioning tool which comprises a base, a positioning block and a supporting block, the positioning block and the supporting block are detachably connected to the base, the positioning block is located on one side of the supporting block, the top face of the supporting block is matched with a special-shaped piece in shape, and the area of the top face of the supporting block is smaller than that of the horizontal section of the special-shaped piece. The positioning block is provided with at least two positioning parts, and the positioning parts are used for making contact with the adjacent side faces of the special-shaped piece so that the axis of the special-shaped piece bonded to the supporting block can coincide with the axis of the supporting block. The supporting block matched with the special-shaped piece in shape is adopted and matched with the positioning part on the positioning block, so that the axis of the special-shaped piece bonded to the supporting block coincides with the axis of the supporting block, the edge of the special-shaped piece evenly protrudes out of the edge of the supporting block, rapid positioning is achieved, the positioning block and the supporting block are detachably connected, and the positioning effect is good. And different positioning blocks and supporting blocks can be replaced according to the shapes of the special-shaped sheets.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a positioning fixture for irregularly shaped pieces. Background Technology

[0002] CNC (Computer Numerical Control) is a technology that uses computers to control machine tools or other manufacturing equipment, and it plays an important role in modern manufacturing. CNC technology makes production processes more precise, automated, and efficient.

[0003] CN220241286U discloses a placement fixture for machining trapezoidal workpieces, including a workpiece placement component mounted on a machining table, a mounting frame movably mounted above the machining table, and several electric screwdrivers slidably mounted on one side of the mounting frame. The workpiece placement component has a trapezoidal placement groove for placing the trapezoidal workpiece, and also has a positioning countersunk hole. A positioning component that can be installed with the positioning countersunk hole is provided at the bottom of the mounting frame. This makes the machining of trapezoidal workpieces more stable and easier to fix, and ensures that the electric screwdriver end is fixed to the workpiece placement component during operation, guaranteeing the accuracy of the electric screwdriver position when tightening screws and preventing workpiece displacement during screw tightening, thus improving the stability of the workpiece during screw tightening.

[0004] However, the above technical solution involves setting a trapezoidal placement groove on the workpiece placement part to fix the workpiece. But this method is only suitable for surface processing and not for edge processing. In edge processing, how to make the edge of the irregular piece protrude evenly from the edge of the tooling becomes a problem that needs to be solved. Utility Model Content

[0005] The purpose of this application is to solve the above problems and provide a positioning fixture for irregularly shaped pieces. This positioning fixture uses a support block that matches the shape of the irregularly shaped piece, and a positioning part on the positioning block to make the axis of the irregularly shaped piece adhered to the support block coincide with the axis of the support block. The edge of the irregularly shaped piece protrudes evenly from the edge of the support block, thereby achieving rapid positioning. Furthermore, the positioning block and the support block are detachably connected, and different positioning blocks and support blocks can be replaced according to the shape of the irregularly shaped piece.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A positioning fixture for irregularly shaped pieces includes a base, a positioning block and a support block detachably connected to the base, the positioning block being located on one side of the support block, the top surface of the support block matching the shape of the irregularly shaped piece, and the top surface area of ​​the support block being smaller than the horizontal cross-sectional area of ​​the irregularly shaped piece, the positioning block having at least two positioning parts, the positioning parts being used to contact adjacent side surfaces on the irregularly shaped piece, so that the axis of the irregularly shaped piece adhered to the support block coincides with the axis of the support block.

[0008] Preferably, the top of the positioning block is provided with a first groove, the first groove is located on the side of the positioning block close to the support block, the first groove forms a connecting first sidewall and second sidewall on the top of the positioning block, the first sidewall and the second sidewall are positioning parts, and the bottom of the first groove and the top of the support block are on the same horizontal plane.

[0009] Preferably, a vertically arranged first cylindrical groove is provided at the junction of the first sidewall and the second sidewall.

[0010] Preferably, the positioning block has an inclined surface on the side facing away from the support block.

[0011] Preferably, the base is provided with a second groove and a through groove that match the shape of the positioning block;

[0012] The second groove has screw holes on its side, and the positioning block is connected to the screw holes by external bolts;

[0013] The base has a threaded screw on its side wall, and a fixing block that matches the through groove is located at the bottom of the support block. The support block is inserted into the through groove through the fixing block and fixed by the screw.

[0014] Preferably, the through groove is a prismatic through groove.

[0015] Preferably, a second cylindrical groove is provided at the corner of the through groove and at the corner of the second groove.

[0016] Preferably, the top surface of the support block is provided with a recess that matches the shape of the irregular piece.

[0017] Preferably, the base, positioning block, and support block are all made of copper.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] This application uses a support block that matches the shape of the irregular piece, and a positioning part on the positioning block, so that the axis of the irregular piece bonded to the support block coincides with the axis of the support block, and the edge of the irregular piece protrudes evenly from the edge of the support block, thus achieving rapid positioning. Furthermore, the positioning block and the support block are detachably connected, and different positioning blocks and support blocks can be replaced according to the shape of the irregular piece. Attached Figure Description

[0020] Figure 1 This is a perspective view of the irregular piece positioning fixture of Example 1;

[0021] Figure 2 This is an exploded view of the irregular piece positioning fixture of Example 1;

[0022] Figure 3 This is a perspective view of the base of the irregular piece positioning fixture in Example 1;

[0023] Figure 4 This is a top view of the base of the irregular piece positioning fixture in Embodiment 1;

[0024] Figure 5 This is a perspective view of the support block of the irregular piece positioning fixture in Example 1;

[0025] Figure 6 This is a top view of the support block of the irregular piece positioning fixture in Embodiment 1;

[0026] Figure 7 This is a perspective view of the positioning block of the irregular piece positioning fixture in Example 1;

[0027] Figure 8 This is a side view of the positioning block of the irregular piece positioning fixture in Example 1.

[0028] The labels for each item are as follows:

[0029] Base 1; Positioning block 2; Support block 3; Second groove 11; Through groove 12; Screw 13; Second cylindrical groove 14; First groove 21; Inclined surface 22; Fixing block 31; Recess 32; Screw hole 111; First side wall 211; Second side wall 212; First cylindrical groove 213; Irregular piece A; Positioning part B. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] refer to Figures 1-8 A positioning fixture for irregularly shaped pieces includes a base 1, a positioning block 2 detachably connected to the base 1, and a support block 3. The positioning block 2 is located on one side of the support block 3. The top surface of the support block 3 matches the shape of the irregularly shaped piece A, and the area of ​​the top surface of the support block 3 is smaller than the horizontal cross-sectional area of ​​the irregularly shaped piece A. The positioning block 2 is provided with at least two positioning parts B, which are used to contact the adjacent side surfaces of the irregularly shaped piece A so that the axis of the irregularly shaped piece A bonded to the support block 3 coincides with the axis of the support block 3.

[0033] In this design, the operator first installs the positioning block 2 on the base 1, then installs the support block 3 on the base 1, applies adhesive to the support block 3, and contacts the adjacent side of the irregular piece A with the positioning part B, ensuring that the axis of the irregular piece A and the axis of the support block 3 coincide, and then adhesives the irregular piece A to the support block 3 to complete the positioning of the irregular piece A. The operator then separates the support block 3 from the base 1 and fixes the support block 3 on the external CNC equipment for processing the irregular piece A.

[0034] In this way, the edge of the irregular piece A protrudes evenly from the edge of the support block 3, achieving rapid positioning. Furthermore, the positioning block 2 and the support block 3 are detachably connected, and different positioning blocks 2 and support blocks 3 can be replaced according to the shape of the irregular piece A.

[0035] In this embodiment, the top of the positioning block 2 is provided with a first groove 21. The first groove 21 is located on the side of the positioning block 2 close to the support block 3. The first groove 21 forms a connecting first sidewall 211 and second sidewall 212 on the top of the positioning block 2. The first sidewall 211 and the second sidewall 212 are the positioning part B. The bottom of the first groove 21 and the top of the support block 3 are located on the same horizontal plane.

[0036] Specifically, adjacent side surfaces of the irregular piece A contact the first sidewall 211 and the second sidewall 212 respectively, limiting the irregular piece A in two directions. The grooves support the protruding part of the irregular piece A, ensuring the stability of the positioning piece during positioning.

[0037] Furthermore, a vertically arranged first cylindrical groove 213 is provided at the junction of the first sidewall 211 and the second sidewall 212. The function of the first cylindrical groove 213 is to avoid the corner of the irregular piece A, improve the installation flexibility of the irregular piece A, and also protect the corner of the irregular piece A.

[0038] Preferably, the positioning block 2 has a slope 22 on the side facing away from the support block 3. Specifically, the slope 22 not only reduces the weight of the positioning block 2, thus achieving a lightweight effect, but also facilitates installation by the operator, avoiding hand discomfort during installation due to the corner located at the top of the positioning block 2.

[0039] In this embodiment, the base 1 is provided with a second groove 11 and a through groove 12 that match the shape of the positioning block 2; the side of the second groove 11 is provided with a screw hole 111, and the positioning block 2 is connected to the screw hole 111 by an external bolt; the side wall of the base 1 is provided with a screw 13 that is threadedly connected to it, and the bottom of the support block 3 is provided with a fixing block 31 that matches the through groove 12. The support block 3 is inserted into the through groove 12 by the fixing block 31 and fixed by the screw 13.

[0040] Specifically, the second groove 11 and the through groove 12 facilitate the installation of the positioning block 2 and the support block 3. The use of bolts and screw holes 111 ensures the connection stability of the positioning block 2 and also facilitates its disassembly and assembly. The support block 3 is connected to the base 1 by inserting a fixing block 31 into the through groove 12, and the fixing block 31 is secured within the through groove 12 by a screw 13. This also facilitates disassembly and assembly, because after positioning the irregular piece A, the support block 3 needs to be separated from the base 1 and then fixed to the external CNC equipment.

[0041] Preferably, the through groove 12 is a prism-shaped through groove 12. In practical use, the prism shape can prevent the support block 3 from rotating in the through groove 12, and it is also convenient to judge the accuracy of the installation position of the support block 3.

[0042] In this embodiment, a second cylindrical groove 14 is provided at the corner of the through groove 12 and the corner of the second groove 11. Specifically, the second cylindrical groove 14 and the first cylindrical groove 213 have the same function, which can avoid the obstruction at the corner during installation and facilitate the installation of the support block 3 and the positioning block 2.

[0043] Preferably, the top surface of the support block 3 is provided with a recess 32 that matches the shape of the irregular piece A. Specifically, the function of the recess 32 is to apply adhesive, which makes it easier to control the amount of adhesive. Moreover, the recess 32 matches the shape of the irregular piece A, so that the bonding point matches the shape of the irregular piece A, ensuring the stability of the irregular piece A on the support block 3.

[0044] Preferably, the base 1, positioning block 2, and support block 3 are all made of copper. Specifically, copper has high wear resistance, can maintain good dimensional stability during long-term use, reduces precision errors caused by wear, and has good machinability, making it easy to process and shape.

[0045] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements or modifications without departing from the principles of this application, and these improvements or modifications should also be considered within the scope of protection of this application.

Claims

1. A positioning fixture for irregularly shaped pieces, characterized in that, The device includes a base, a positioning block and a support block detachably connected to the base. The positioning block is located on one side of the support block. The top surface of the support block matches the shape of the irregular piece, and the area of ​​the top surface of the support block is smaller than the horizontal cross-sectional area of ​​the irregular piece. The positioning block is provided with at least two positioning parts, which are used to contact adjacent side surfaces on the irregular piece so that the axis of the irregular piece bonded to the support block coincides with the axis of the support block.

2. The irregularly shaped piece positioning fixture according to claim 1, characterized in that, The top of the positioning block is provided with a first groove, which is located on the side of the positioning block close to the support block. The first groove forms a connecting first sidewall and second sidewall on the top of the positioning block. The first sidewall and the second sidewall are the positioning part. The bottom of the first groove and the top of the support block are on the same horizontal plane.

3. The irregularly shaped piece positioning fixture according to claim 2, characterized in that, The junction of the first sidewall and the second sidewall is provided with a vertically arranged first cylindrical groove.

4. The irregularly shaped piece positioning fixture according to claim 1, characterized in that, The positioning block has an inclined surface on the side facing away from the support block.

5. The irregularly shaped piece positioning fixture according to claim 1, characterized in that, The base is provided with a second groove and a through groove that match the shape of the positioning block; The second groove has a screw hole on its side, and the positioning block is connected to the screw hole by an external bolt; The base has a threaded screw on its side wall, and the bottom of the support block has a fixing block that matches the through groove. The support block is inserted into the through groove through the fixing block and fixed by the screw.

6. The irregularly shaped piece positioning fixture according to claim 5, characterized in that, The through groove is a prismatic through groove.

7. The irregularly shaped piece positioning fixture according to claim 5, characterized in that, Both the corner of the through groove and the corner of the second groove are provided with second cylindrical grooves.

8. The irregularly shaped piece positioning fixture according to claim 1, characterized in that, The top surface of the support block is provided with a recess that matches the shape of the irregular piece.

9. The irregularly shaped piece positioning fixture according to claim 1, characterized in that, The base, positioning block, and support block are all made of copper.

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