Flexible rotary clamp

Abstract

The utility model belongs to the field of machining, clamping and positioning design, and particularly relates to a flexible rotary clamp which is used for machining irregular shapes through a rotary workbench. A special clamp is used for fixing a workpiece, the manufacturing difficulty of the clamp is large, the manufacturing period is long, and the quality requirement and the production period requirement of products cannot be met. The clamp comprises a base, a quick-change base body, a bolt, a pressing plate and a positioning ring, the lower portion of the base is connected with a rotary table, the quick-change base body of an annular structure is fixedly supported on the upper end face of the middle of the base, an upper column is provided with an upper threaded hole, the positioning ring is arranged on the outer side of the upper column in a sleeving mode, and the bolt is installed in the upper threaded hole. And the end part of the bolt is connected with the pressing plate. The clamping and positioning method is suitable for machining of irregular outlines and shapes, the size precision of the parts needs to be completed through one-time clamping, and various ejection stopper shell parts with irregular shapes are obtained, the clamping and positioning problems of the parts are perfectly solved, rapid production changing is achieved to a great extent through the clamping and positioning method, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing clamping and positioning design, and specifically relates to a flexible rotary clamp which uses a rotary worktable to process irregular shapes. Background Art

[0002] Due to the machining accuracy of ejection stopper housing parts, multiple parts of the parts are usually machined at one time using equipment equipped with a rotary table. Each part requires the design and manufacture of a dedicated fixture to fix the workpiece. The manufacturing of the fixture is difficult and the manufacturing cycle is long, which cannot meet the product quality requirements and production cycle requirements. Summary of the invention

[0003] The utility model provides a flexible rotary clamp, which aims to solve the clamping and positioning problems of ejection stopper shell parts with irregular shapes and large removal amounts, and provides a new clamping and positioning method.

[0004] A flexible rotary clamp is used to clamp various parts with axial holes on a rotary workbench. The clamp includes a base, a quick-change base, bolts, a pressure plate and a positioning ring, wherein the lower part of the base is connected to the rotary workbench, the middle upper end face is fixed to the quick-change base with a supporting annular structure, the upper column has an upper threaded hole, the positioning ring is sleeved on the outside of the upper column, the bolt is installed in the upper threaded hole, and the pressure plate is connected to the end of the bolt.

[0005] Advantageously, the lower portion of the base is a bottom plate, and the bottom plate is provided with a bolt mounting hole and a lower positioning hole.

[0006] Advantageously, the middle portion of the base is a middle column, and a positioning boss, a middle threaded hole and a middle positioning hole are provided on the upper end surface thereof for positioning and installing the quick-change base.

[0007] Advantageously, the positioning boss is clearance-matched with the lower end surface of the quick-change base.

[0008] Advantageously, the quick-change base has a pin hole and a connecting hole; a positioning pin is inserted into the middle positioning hole and the pin hole to position the quick-change base, and the quick-change base is fixed by screws in the middle threaded hole and the connecting hole.

[0009] Advantageously, the quick-change base has a plurality of pin holes and connecting holes.

[0010] Advantageously, the upper end surface of the quick-change base provides axial support to the part, and the positioning ring provides radial support to the part.

[0011] Advantageously, the bottom plate also has a levelling reference.

[0012] Beneficial effects: The flexible rotary clamp of the utility model is suitable for processing parts with irregular contours and shapes, where the dimensional accuracy of parts needs to be completed in one clamping, and various ejection stopper shell parts with irregular shapes. It perfectly solves the clamping and positioning problems of such parts. This clamping and positioning method can greatly achieve rapid production change and improve processing efficiency.

[0013] The fixture has a simple design, which reduces the manufacturing cost of the fixture. It has a simple structure, is easy to operate, and the quality of the processed parts is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the flexible rotary fixture;

[0015] Figure 2 It is the right view of the flexible rotary fixture;

[0016] Figure 3 It is the axial section view of the base;

[0017] Figure 4 This is the main view of the base;

[0018] Figure 5 It is the right side view of the base;

[0019] Figure 6 This is a schematic diagram of clamping the workpiece.

[0020] 1. Base; 2. Quick-change base; 3. Bolt; 4. Pressure plate; 5. Positioning pin; 6. Positioning ring; 7. Parts; 8. Rotary table; 11. Bolt mounting hole; 12. Lower positioning hole; 13. Leveling reference; 14. Positioning boss; 15. Upper column; 16. Upper threaded hole; 17. Middle threaded hole; 18. Middle positioning hole DETAILED DESCRIPTION

[0021] See also Figure 1-2 The embodiment shown is a flexible rotary clamp, which mainly includes a base 1, a quick-change base 2, a bolt 3, a pressure plate 4, a positioning pin 5 and a positioning ring 6. The base is the part connected to the rotary table 8.

[0022] See also Figure 3-5The base 1 is a stepped shaft structure. There are 6 bolt mounting holes 11 on the bottom plate along the circumference, which are used to screw in the clamping screws and clamp the rotary table. There is also a lower positioning hole 12 on the base plate. The positioning pin is inserted into the lower positioning hole 12 to realize the positioning of the base 1 relative to the rotary table 8. The middle column has a positioning boss 14, a middle threaded hole 17 and a middle positioning hole 18 on the upper end surface. The positioning boss 14 is clearance-matched with the lower end surface of the quick-change base 2. After the positioning pin is inserted into the middle positioning hole 18, it is used to position the quick-change base 2 relative to the base 1. In this embodiment, there are 3 threaded holes 17 for clamping the quick-change base 2 by screws. The outer side of the upper column 15 is used to fit the positioning ring 6, which cooperates with the quick-change base 2 to realize the positioning of different inner holes of the series of parts. Different sizes can be designed according to the requirements of the part aperture. The upper threaded hole 16 inside the upper column 15 is used to screw in the bolt 3. The pressing plate 4 is an annular part with an internal thread that matches the bolt 3. The part 7 is pressed at the end by the pressing plate 4. A leveling reference 13 is also provided on the base plate, which has a strict positional relationship with the middle positioning hole 18.

[0023] The bottom plate and the middle column avoid the tool holder during the rotation processing of the part.

[0024] The clamping and quick-change process: the base 1 is connected to the rotary table, and the quick-change base 2 is used for docking conversion. One end face of the quick-change base 2 is docked with the base 1, and the other end face is docked with the part 7. The quick-change base 2 and the positioning ring 6 are designed according to different parts, so that the quick change of parts can be realized.

Claims

1. A flexible rotary clamp, used for clamping various parts with shaft holes on a rotary workbench, characterized in that: The clamp comprises a base (1), a quick-change base (2), a bolt (3), a pressure plate (4) and a positioning ring (6), wherein the lower part of the base (1) is connected to a rotary table (8), the middle upper end surface is fixed to the quick-change base (2) with a supporting annular structure, the upper column (15) has an upper threaded hole (16), the positioning ring (6) is sleeved on the outer side of the upper column (15), the bolt (3) is installed in the upper threaded hole (16), and the pressure plate (4) is connected at the end of the bolt (3).

2. The flexible rotary clamp according to claim 1, characterized in that: The lower part of the base (1) is a bottom plate body, and the bottom plate body is provided with a bolt mounting hole (11) and a lower positioning hole (12).

3. The flexible rotary clamp according to claim 2, characterized in that: The middle part of the base (1) is a middle column, and the upper end surface thereof is provided with a positioning boss (14), a middle threaded hole (17) and a middle positioning hole (18), which are used for positioning and installing the quick-change base (2).

4. The flexible rotary clamp according to claim 3, characterized in that: The positioning boss (14) is clearance-matched with the lower end surface of the quick-change base (2).

5. The flexible rotary clamp according to claim 4, characterized in that: The quick-change base (2) has a pin hole and a connecting hole; a positioning pin (5) is inserted into the middle positioning hole (18) and the pin hole to position the quick-change base (2); and the quick-change base (2) is fixed by screws in the middle threaded hole (17) and the connecting hole.

6. The flexible rotary clamp according to claim 5, characterized in that: The quick-change base (2) has a plurality of pin holes and connection holes.

7. The flexible rotary clamp according to claim 6, characterized in that: The upper end surface of the quick-change base (2) provides axial support to the part (7), and the positioning ring (6) provides radial support to the part (7).

8. The flexible rotary clamp according to claim 7, characterized in that: The bottom plate also has a leveling reference (13).

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