An end face cutting jig for thin shell workpieces

Abstract

The utility model provides a kind of thin shell workpiece end face cutting processing fixture, including base, support plate, briquetting and spring, the base is solidly connected with support plate, the surface of support plate is equipped with limit slot, limit hole is equipped in the limit slot, the briquetting is solidly connected with guide rod one end, guide rod other end is screwed with nut, the guide rod is also through the limit slot, limit hole and spring, the spring is contained in the limit slot, and workpiece is clamped between the briquetting and support plate.Using the technical scheme of the utility model, workpiece is clamped between support plate and briquetting, since spring is arranged between support plate and briquetting, spring provides pre-tightening force to the connection between support plate and briquetting, so that support plate and briquetting can be stably connected, so that workpiece is kept stable positioning, avoid workpiece displacement in cutting process, lay the foundation for improving cutting precision.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, and in particular relates to a fixture for machining the end face of thin-shell workpieces. Background Technology

[0002] With the continuous development of machining technology, people have higher and higher requirements for the shape and performance of mechanical parts. In order to keep the thin-shell workpieces in a stable position during the cutting process, special fixtures are used to clamp the thin-shell workpieces.

[0003] For example, patent document CN112338603A discloses an auxiliary machining fixture and its machining method for open thin-walled ring parts. The auxiliary machining fixture includes a base and a cover plate. The base has a flange, and the cover plate has a flange. The base and the cover plate are connected together by fasteners. The flange and the flange are opposite to each other, so that multiple open thin-walled ring parts can be stacked and clamped between the flange and the flange. The machining method includes using the auxiliary machining fixture as described above and clamping multiple blanks, cutting the blanks into closed ring parts by a machine tool; then cutting the closed ring parts radially to obtain multiple open thin-walled ring parts. By using this patented technical solution, the overall rigidity of the blanks is improved and the machining difficulty is reduced by using a special fixture to clamp and fix the blanks.

[0004] However, modern fixtures generally include a fixture body, a positioning device, and a clamping device. The positioning device and clamping device are generally fixed to the fixture body. When machining the end face of a certain type of thin-shell workpiece, the outer peripheral surface of the thin-shell workpiece is curved and difficult to clamp. Existing clamping devices generally use fasteners such as bolts and nuts to fix the clamping element to the fixture body and hold the workpiece between the clamping element and the fixture body. However, since the clamping element and the fixture body are rigidly connected, the workpiece is prone to displacement when the entire fixture is subjected to vibration or external force, which affects the machining accuracy. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a fixture for machining the end face of thin-shell workpieces.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a fixture for machining the end face of a thin-shell workpiece, including a base, a support plate, a pressure block, and a spring. The base is fixedly connected to the support plate. The surface of the support plate is provided with a limiting groove and a limiting hole. The pressure block is fixedly connected to one end of a guide rod, and the other end of the guide rod is screwed to a nut. The guide rod also passes through the limiting groove, the limiting hole, and the spring. The spring is accommodated in the limiting groove, and the workpiece is clamped between the pressure block and the support plate.

[0008] The thin-shell workpiece end face cutting fixture also includes an elastic washer, which is clamped between the nut and the support plate.

[0009] The limiting groove is an oval blind groove, and the limiting hole is an oval through hole.

[0010] The thin-shell workpiece end face cutting fixture also includes a pad block. The bottom surface of the pad block is fixedly connected to the support plate, and the top surface of the pad block is provided with a positioning step. The workpiece is clamped between the positioning step and the pressure block.

[0011] The pressing block is L-shaped overall.

[0012] The thin-shell workpiece end face cutting fixture also includes a column, which is fixed between the base and the support plate.

[0013] The support plate is in the shape of a disc.

[0014] The base is disc-shaped.

[0015] The thin-shell workpiece end face cutting fixture also includes a shank, one end of which passes through the guide rod, and the other end of which extends outward.

[0016] The length direction of the handle intersects the axial direction of the guide rod perpendicularly to each other.

[0017] The beneficial effects of this utility model are as follows: With the technical solution of this utility model, the workpiece is clamped between the support plate and the pressure block. Since a spring is set between the support plate and the pressure block, the spring provides a preload force for the connection between the support plate and the pressure block, so that the support plate and the pressure block can be stably connected, so that the workpiece is kept stably positioned and the workpiece is prevented from shifting during the cutting process, thus laying the foundation for improving the cutting accuracy. Attached Figure Description

[0018] Figure 1 This is the front view of this utility model.

[0019] In the diagram: 1-base, 2-support plate, 3-pressure block, 4-spring, 5-limiting groove, 6-limiting hole, 7-guide rod, 8-nut, 9-workpiece, 10-elastic washer, 11-pad, 12-column, 13-handle. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figure 1As shown, this utility model provides a cutting fixture for the end face of a thin-shell workpiece, including a base 1, a support plate 2, a pressure block 3, and a spring 4. The base 1 is fixedly connected to the support plate 2. The surface of the support plate 2 is provided with a limiting groove 5 and a limiting hole 6 in the limiting groove 5. The pressure block 3 is fixedly connected to one end of a guide rod 7, and the other end of the guide rod 7 is screwed to a nut 8. The guide rod 7 also passes through the limiting groove 5, the limiting hole 6, and the spring 4. The spring 4 is accommodated in the limiting groove 5, and the workpiece 9 is clamped between the pressure block 3 and the support plate 2.

[0022] The technical solution of this utility model is used to clamp the workpiece between the support plate and the pressure block. Since a spring is set between the support plate and the pressure block, the spring provides a preload force for the connection between the support plate and the pressure block, so that the support plate and the pressure block can be stably connected, the workpiece is kept stably positioned, and the workpiece is prevented from shifting during the cutting process, thus laying the foundation for improving the cutting accuracy.

[0023] Specifically, the thin-shell workpiece end face cutting fixture also includes an elastic washer 10, which is clamped between the nut 8 and the support plate 2. By using the technical solution of this utility model, the elastic washer 10, placed between the nut 8 and the support plate 2, provides a preload force to the connection between the support plate and the pressure block, further stabilizing the connection between them and ensuring stable workpiece positioning. This prevents workpiece displacement during cutting and lays the foundation for further improving cutting accuracy.

[0024] In addition, the limiting groove 5 is an oblong blind groove, and the limiting hole 6 is an oblong through hole. The fixture for machining the end face of thin-shell workpieces also includes a pad 11. The bottom surface of the pad 11 is fixedly connected to the support plate 2, and the top surface of the pad 11 is provided with a positioning step. The workpiece 9 is clamped between the positioning step and the pressure block 3. The pressure block 3 is L-shaped in general.

[0025] In addition, the thin-shell workpiece end face cutting fixture also includes a column 12, which is fixedly connected between the base 1 and the support plate 2. The support plate 2 is disc-shaped. The base 1 is disc-shaped. Using the technical solution of this utility model, the support plate 2 supports the workpiece, giving it a unified positioning reference. The column 12, fixedly connected between the base 1 and the support plate 2, increases the operating space for fixture assembly, allowing the operator to easily tighten the support plate and pressure block from the space between the base 1 and the support plate 2, and apply the corresponding preload.

[0026] Specifically, the fixture for machining the end face of thin-shell workpieces also includes a shank 13, one end of which passes through the guide rod 7, and the other end of which extends outward. Preferably, the length direction of the shank 13 intersects the axial direction of the guide rod 7 perpendicularly to each other.

Claims

1. A fixture for machining the end face of a thin-shell workpiece, characterized in that: The device includes a base (1), a support plate (2), a pressure block (3), and a spring (4). The base (1) is fixedly connected to the support plate (2). The surface of the support plate (2) is provided with a limiting groove (5). The limiting groove (5) is provided with a limiting hole (6). The pressure block (3) is fixedly connected to one end of a guide rod (7). The other end of the guide rod (7) is screwed to a nut (8). The guide rod (7) also passes through the limiting groove (5), the limiting hole (6), and the spring (4). The spring (4) is accommodated in the limiting groove (5). The workpiece (9) is clamped between the pressure block (3) and the support plate (2).

2. The thin-shell workpiece end face cutting fixture as described in claim 1, characterized in that: The thin-shell workpiece end face cutting fixture also includes an elastic washer (10), which is sandwiched between the nut (8) and the support plate (2).

3. The thin-shell workpiece end face cutting fixture as described in claim 1, characterized in that: The limiting groove (5) is an oval blind groove, and the limiting hole (6) is an oval through hole.

4. The thin-shell workpiece end face cutting fixture as described in claim 1, characterized in that: The thin-shell workpiece end face cutting fixture also includes a pad (11), the bottom surface of the pad (11) is fixedly connected to the support plate (2), the top surface of the pad (11) is provided with a positioning step, and the workpiece (9) is clamped between the positioning step and the pressure block (3).

5. The machining fixture for the end face of a thin-shell workpiece as described in claim 1 or 4, characterized in that: The pressing block (3) is L-shaped as a whole.

6. The thin-shell workpiece end face cutting fixture as described in claim 1, characterized in that: The thin-shell workpiece end face cutting fixture also includes a column (12), which is fixed between the base (1) and the support plate (2).

7. The thin-shell workpiece end face cutting fixture as described in claim 1, 2, 4, or 6, characterized in that: The support plate (2) is in the shape of a disc.

8. The thin-shell workpiece end face cutting fixture as described in claim 1 or 6, characterized in that: The base (1) is in the shape of a disc.

9. The thin-shell workpiece end face cutting fixture as described in claim 1, characterized in that: The thin-shell workpiece end face cutting fixture also includes a shank (13), one end of which passes through the guide rod (7), and the other end of which extends outward.

10. The thin-shell workpiece end face cutting fixture as described in claim 9, characterized in that: The length direction of the handle (13) intersects the axial direction of the guide rod (7) perpendicularly to each other.

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