Clamping device for shaft welding

Abstract

The utility model provides a clamping device for shaft welding. The clamping device comprises a driving center sleeve and a center. A driving surface is arranged at the front end of the driving center sleeve; an axis hole is formed in the center of the driving center sleeve; the center is assembled in the axis hole in a sliding mode, a center head of the center extends out of the driving face of the center sleeve, and a spring is directly or indirectly arranged between the rear end of the center and the driving center sleeve. Wherein a driving blade is arranged on the driving surface of the driving center sleeve. According to the clamping device for shaft welding, when products are changed within the drivable range, welding workpieces with different diameters and sizes can be replaced and clamped, production cost is reduced, manpower consumption caused by tool replacement is reduced, and working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of welding processing, and in particular relates to a clamping device for shaft welding. Background Art

[0002] The existing shaft welding fixtures have poor versatility. Generally, each welding fixture only corresponds to shafts with a certain outer diameter size range. When welding machine tools weld workpieces with different outer diameter sizes, it is necessary to replace multiple welding fixtures according to the outer diameter of the workpiece, which increases the investment cost of the welding fixtures. In addition, the welding fixtures need to be disassembled and assembled many times during production changes, which is time-consuming and labor-intensive. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a clamping device for shaft welding, which is used to overcome the above problems or at least partially solve or alleviate the above problems.

[0004] The utility model provides a clamping device for shaft welding, comprising:

[0005] A driving top sleeve, wherein the front end of the driving top sleeve is provided with a driving surface, and the center of the driving top sleeve is provided with an axial center hole;

[0006] A top, the top is slidably assembled in the axial center hole, a spring is directly or indirectly arranged between the rear end of the top and the driving top sleeve, and the top head of the top protrudes out of the front end of the axial center hole under the action of the spring;

[0007] Wherein, a driving blade is arranged on the driving surface of the driving top sleeve.

[0008] The utility model also has the following optional features.

[0009] Optionally, the axial hole is a through hole, a rear section of the axial hole is provided with a thread, and a stop screw is connected via the thread.

[0010] Optionally, a shrinking step is provided at the front section of the axial hole, and a shoulder is provided on the side wall of the top, and the shrinking step blocks the shoulder.

[0011] Optionally, a flange is provided on the side wall of the driving top sleeve, and a flange positioning hole is provided on the flange.

[0012] Optionally, the driving tip sleeve is provided with a step surface on the side wall of the rear side of the flange.

[0013] Beneficial effects of the utility model:

[0014] The clamping device for shaft welding of the utility model sets a spring-compressible top on the top of the driving top sleeve. When the top is against the rear end of the workpiece, the top is compressed by the spring, and the driving surface of the driving top sleeve is tightly tied to the end face of the workpiece, so that the torque generated by the machine tool spindle can be transmitted to the workpiece, thereby ensuring that products with different outer diameters can be clamped and rotated within the drivable range, which is convenient for welding. When changing production, it avoids frequent replacement of matching clamping tooling for welding products of different diameters, reduces production costs, reduces manpower consumption caused by replacing tooling, and greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the overall structure of the clamping device for shaft welding of the utility model.

[0016] In the above figure: 1. Drive center sleeve; 2. Drive surface; 3. Axial hole; 4. Center; 5. Spring; 6. Stop screw; 7. Shrink step; 8. Shoulder; 9. Flange; 10. Step surface; 11. Welding workpiece; 12. Tail stock center; 13. Flange positioning hole.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; DETAILED DESCRIPTION

[0018] Example 1

[0019] refer to Figure 1 The embodiment of the utility model proposes a clamping device for shaft welding, including: a driving top sleeve 1 and a top 4; a driving surface 2 is provided at the front end of the driving top sleeve 1, and an axial hole 3 is provided at the center of the driving top sleeve 1; the top 4 is slidably assembled in the axial hole 3, and a spring 5 is directly or indirectly provided between the rear end of the top 4 and the driving top sleeve 1, and the top head of the top 4 protrudes from the front end of the axial hole 3; wherein, a driving blade is provided on the driving surface 2 of the driving top sleeve 1.

[0020] The tailstock top 12 is assembled on the welding machine. When in use, the rear end of the driving top sleeve 1 is assembled in the driving shaft hole of the welding machine, and the welding workpiece 11 is pushed between the driving top sleeve 1 and the tailstock top 12. The top 4 on the driving top sleeve 1 contacts the front end of the welding workpiece 11, and the tailstock top 12 contacts the rear end of the welding workpiece 11. The welding machine drives the driving top sleeve 1 and the top 4 to rotate, thereby driving the welding workpiece 11 and the tailstock top 12 to rotate, and the welding workpiece 11 is welded during rotation.

[0021] When clamping different welding workpieces 11, if the outer circumferential size of the welding workpiece 11 is small, the welding machine tool directly presses the welding workpiece 11 and drives the rotation welding through the tip 4 extending from the front end of the driving tip sleeve 1 and the tailstock tip 12; if the outer circumferential size of the welding workpiece 11 is large, the driving force of the driving shaft on the driving tip sleeve 1 is increased, so that the tip 4 and the spring 5 are compressed and retracted into the axial center hole 3 of the driving tip sleeve 1, and the driving tip sleeve 1 presses the welding workpiece 11 through the driving surface 2, and the driving blade on the driving surface 2 can tighten the end face of the welding workpiece 11, and transmit the torque of the welding machine tool to the welding workpiece 11, thereby ensuring that the welding workpiece 11 with a larger outer diameter can be clamped and driven to rotate, and the welding machine tool can perform rotation welding on the welding workpiece 11.

[0022] Example 2

[0023] refer to Figure 1 On the basis of Example 1, the axial hole 3 is a through hole, the rear section of the axial hole 3 is provided with a thread, and a stop screw 6 is connected through the thread.

[0024] The rear end of the axial hole 3 is directly processed into a threaded hole, the top 4 and the spring 5 are installed from the rear end of the axial hole 3 and then the stop screw 6 is connected. A hexagonal blind hole is set at the rear end of the stop screw 6. The stop screw 6 can be tightened with a hexagonal wrench to adjust the elastic force of the spring 5.

[0025] Example 3

[0026] refer to Figure 1 On the basis of Example 1, a shrinking step 7 is provided at the front section of the axial hole 3 , and a shoulder 8 is provided on the side wall of the top 4 , and the shrinking step 7 blocks the shoulder 8 .

[0027] The shoulder 8 of the tip 4 can contact the shrinking step 7 under the action of the spring 5, so that the tip of the tip 4 extends out of the end of the axial hole 3, so that the tip 4 can position and tighten the welding workpiece 11. The shoulder 8 on the tip 4 can be blocked by the shrinking step 7 in the axial hole 3, which can prevent the tip 4 from completely detaching from the front end of the axial hole 3 when the welding workpiece 11 is removed.

[0028] Example 4

[0029] refer to Figure 1 On the basis of Example 1, a flange 9 is provided on the side wall of the driving top sleeve 1, and a flange positioning hole 13 is provided on the flange 9.

[0030] The driving center sleeve 1 can be connected to driving sleeve components of different diameters through the flange positioning hole 13 on the flange 9, adapted to a machine tool with a larger driving power, and can tighten a welding workpiece 11 with a larger diameter.

[0031] Example 5

[0032] refer to Figure 1 On the basis of Embodiment 4, the driving top sleeve 1 is provided with a step surface 10.

[0033] When the driving tip 1 is assembled in the inner hole of the driving shaft, a step surface 10 is provided on the driving tip sleeve 1 to play a role in positioning and transmitting driving force.

[0034] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and are not described here one by one.

Claims

1. A clamping device for shaft welding, characterized in that: include: A driving top sleeve (1), wherein a driving surface (2) is provided at the front end of the driving top sleeve (1), and an axial center hole (3) is provided at the center of the driving top sleeve (1); A center pin (4), the center pin (4) is slidably mounted in the axial center hole (3), a spring (5) is directly or indirectly arranged between the rear end of the center pin (4) and the driving center pin sleeve (1); the center pin head of the center pin (4) protrudes out of the front end of the axial center hole (3) under the action of the spring (5); Wherein, a driving blade is arranged on the driving surface (2) of the driving top sleeve (1).

2. The clamping device for shaft welding according to claim 1, characterized in that: The axial center hole (3) is a through hole, and a rear section of the axial center hole (3) is provided with a thread and is connected with a stop screw (6) via the thread.

3. The clamping device for shaft welding according to claim 2, characterized in that: A shrinking step (7) is provided at the front section of the axial center hole (3), and a shaft shoulder (8) is provided on the side wall of the top (4), and the shrinking step (7) blocks the shaft shoulder (8).

4. The clamping device for shaft welding according to claim 1, characterized in that: A flange (9) is provided on the side wall of the driving top sleeve (1), and a flange positioning hole (13) is provided on the flange (9).

5. The clamping device for shaft welding according to claim 4, characterized in that: The driving top sleeve (1) is provided with a step surface (10) on the side wall at the rear side of the flange (9).

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