Tool clamp for machining chain wheel

Abstract

The tool clamp for machining the chain wheel comprises a mounting platform and a mounting base arranged on the mounting platform, a mounting cavity is formed in the upper surface of the mounting base, a first positioning rod is coaxially arranged on the bottom wall of the mounting cavity, and the length of the first positioning rod is larger than the depth of the mounting cavity; a second positioning rod is arranged at the position, located on one side of the first positioning rod, of the bottom wall of the mounting cavity, the second positioning rod is slidably connected to the mounting base in the vertical direction, and the mounting base is provided with a first driving part for driving the second positioning rod to slide. The machining method has the effect of improving the machining efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of clamps, and in particular to a tooling clamp for machining sprockets. Background Art

[0002] During the processing of sprockets, some special sprockets need to process the inner cavity and the material stealing part of the sprocket. In the prior art, the sprocket is usually clamped by clamping up and down. However, when the existing clamp is clamped, the installation angle of the sprocket is different each time, so the tool alignment work needs to be repeated later, resulting in low processing efficiency. Utility Model Content

[0003] In order to improve processing efficiency, the present application provides a tooling fixture for processing sprockets.

[0004] The present application provides a tooling fixture for machining a sprocket using the following technical solution:

[0005] A tooling fixture for processing a sprocket comprises a mounting platform and a mounting base arranged on the mounting platform, wherein the upper surface of the mounting base is provided with a mounting cavity, a first positioning rod is coaxially arranged on the bottom wall of the mounting cavity, the length of the first positioning rod is greater than the depth of the mounting cavity, a second positioning rod is arranged on the bottom wall of the mounting cavity on one side of the first positioning rod, the second positioning rod is slidably connected to the mounting base along a vertical direction, and the mounting base is provided with a first driving member for driving the second positioning rod to slide.

[0006] By adopting the above technical solution, a first positioning rod is provided on the mounting base. When the sprocket is installed, the first positioning rod is first clamped on the first positioning hole of the sprocket, and then the first driving member drives the second positioning rod to move. Each time the angle of rotation of the sprocket along the axis is adjusted, the hole wall on the sprocket is abutted against the second positioning rod. The sprocket can be adjusted to the same angle each time it is clamped, so as to reduce the subsequent repeated tool setting work and thereby improve the processing efficiency.

[0007] Optionally, the mounting base is provided with a clamping ring, and the clamping ring is used to clamp the sprocket on the mounting base.

[0008] By adopting the above technical solution, a clamping ring is provided, and the sprocket is pressed onto the mounting base through the clamping ring.

[0009] Optionally, the mounting platform is provided with a clamping block for pressing the clamping ring, and the mounting platform is provided with a second driving member for driving the clamping block to perform clamping.

[0010] By adopting the above technical solution, a clamping block is arranged on the mounting platform, so that the second driving member drives the clamping block to press the clamping ring to clamp the sprocket.

[0011] Optionally, the second driving member is a second hydraulic cylinder, which is provided with a connecting rod, the lower end of the connecting rod is hinged to the cylinder body of the second hydraulic cylinder, the upper end of the connecting rod is hinged to the middle part of the clamping block, and the piston rod of the second hydraulic cylinder is hinged to the end of the clamping block away from the clamping ring.

[0012] By adopting the above technical solution, when the clamping ring needs to be clamped, the piston of the second hydraulic cylinder moves, and then drives the clamping block to rotate, so that the end of the clamping block away from the second hydraulic cylinder is clamped on the clamping ring to fix the clamping ring.

[0013] Optionally, a plurality of the pressing blocks are provided, and the plurality of the pressing blocks are arranged in a circular array around the axis direction of the pressing ring.

[0014] By adopting the above technical solution, a plurality of clamping blocks are provided, thereby improving the stability of clamping the clamping ring.

[0015] Optionally, an abutment boss is arranged around the outer side of the clamping ring, and a guide cone surface is arranged around the side of the abutment boss close to the axis of the clamping ring, and the guide cone surface is inclined from the side away from the mounting base to the side close to the mounting base along the direction away from the axis of the clamping ring.

[0016] By adopting the above technical solution, the clamping ring may be offset when installing it, so a guide cone surface is provided on the clamping ring. When the clamping ring is offset, the clamping block can abut against the guide cone surface to correct the position of the clamping ring.

[0017] Optionally, a rotation groove is provided at one end of the clamping block close to the clamping ring, a steel ball is rotatably connected in the rotation groove, and an abutment surface is provided at the lower part of the steel ball, and the abutment surface is located outside the rotation groove.

[0018] By adopting the above technical solution, a rotatable steel ball is provided on the clamping block. During clamping, the abutment surface on the steel ball abuts against the clamping ring. Since the steel ball can rotate, the abutment surface can always abut against the clamping ring, thereby improving the stability of the clamping.

[0019] Optionally, the clamping block includes a first rod and a second rod, the first rod is provided with a first half groove, the second rod is provided with a second half groove, the first half groove and the second half groove are spliced ​​to form a rotation groove, and the first rod and the second rod are fixed by bolts.

[0020] By adopting the above technical solution, the rotating groove is split into a first half groove and a second half groove, thereby facilitating the installation of the steel ball and improving the convenience of installation.

[0021] In summary, the utility model has the following beneficial effects:

[0022] 1. A first positioning rod is provided on the mounting base. When the sprocket is installed, the first positioning rod is first clamped on the first positioning hole of the sprocket, and then the first driving member drives the second positioning rod to move. Each time the angle of rotation of the sprocket along the axis is adjusted, the hole wall on the sprocket is abutted against the second positioning rod, so that the sprocket can be adjusted to the same angle each time it is clamped, so as to reduce the subsequent repeated tool setting work, thereby improving the processing efficiency;

[0023] 2. A rotatable steel ball is provided on the clamping block. When clamping, the abutting surface on the steel ball abuts against the clamping ring. Since the steel ball can rotate, the abutting surface can always abut against the clamping ring, thereby improving the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of Example 1;

[0025] Figure 2 It is a schematic diagram of the structure of the steel ball in Example 2.

[0026] In the figure, 1, mounting platform; 2, mounting base; 21, first positioning rod; 22, second positioning rod; 3, clamping ring; 31, abutment boss; 32, guide cone; 4, sprocket; 5, clamping block; 51, first rod; 52, second rod; 53, connecting rod; 54, second hydraulic cylinder; 55, first half groove; 56, second half groove; 57, steel ball; 571, abutment surface;. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-2 This application is described in further detail.

[0028] Embodiment 1:

[0029] Embodiment 1 of the present application discloses a tooling fixture for machining a sprocket, referring to Figure 1 , including a mounting platform 1 and a mounting base 2 disposed on the mounting platform 1, wherein the upper surface of the mounting base 2 is provided with a mounting cavity, and the bottom wall of the mounting cavity is coaxially fixedly connected with a first positioning rod 21, and the length of the first positioning rod 21 is greater than the depth of the mounting cavity. The mounting base 2 is provided with a clamping ring 3, and the clamping ring 3 is used to clamp the sprocket 4 on the mounting base 2. When installing the sprocket 4, the sprocket 4 is placed on the mounting base 2, so that the first positioning rod 21 is clamped on the first positioning hole of the sprocket 4, and then the sprocket 4 is clamped by the clamping ring 3.

[0030] Reference Figure 1A first sliding groove is opened on the bottom wall of the installation cavity in the vertical direction, and a second positioning rod 22 is provided in the installation cavity. The second positioning rod 22 is slidably connected to the first sliding groove in the vertical direction. A first driving member for driving the second positioning rod 22 to slide is fixedly connected inside the installation base 2. The first driving member is a first hydraulic cylinder, and the piston rod of the first hydraulic cylinder is fixedly connected to the second positioning rod 22.

[0031] Reference Figure 1 The mounting platform 1 is provided with a pressing block 5 for pressing the pressing ring 3, and the mounting platform 1 is provided with a second driving member for driving the pressing block 5 to press. The second driving member is a second hydraulic cylinder 54, and a connecting block is fixedly connected to the upper surface of the cylinder body of the second hydraulic cylinder 54 on the side close to the pressing ring 3, and a connecting rod 53 is provided on the connecting block, and the lower end of the connecting rod 53 is hinged to the connecting block, and the upper end of the connecting rod 53 is hinged to the middle of the pressing block 5, and the piston rod of the second hydraulic cylinder 54 is hinged to the end of the pressing block 5 away from the pressing ring 3.

[0032] Reference Figure 1 There are a plurality of pressing blocks 5 , which are arranged in a circular array around the axis direction of the pressing ring 3 .

[0033] Reference Figure 1 A contact boss 31 is arranged around the outer side of the clamping ring 3, and the contact boss 31 is used for contact with the bottom surface of the clamping block 5. A guide cone surface 32 is arranged around the side of the contact boss 31 close to the axis of the clamping ring 3. The guide cone surface 32 is inclined from the side away from the mounting base 2 to the side close to the mounting base 2 along the direction away from the axis of the clamping ring 3.

[0034] The implementation principle of Example 1 of the present application is as follows: a first positioning rod 21 is provided on the mounting base 2. When the sprocket 4 is installed, the first positioning rod 21 is first clamped on the first positioning hole of the sprocket 4, and then the first hydraulic cylinder drives the second positioning rod 22 to move. Each time the angle of rotation of the sprocket 4 along the axis is adjusted, the hole wall on the sprocket 4 is abutted against the second positioning rod 22. The sprocket 4 can be adjusted to the same angle each time it is clamped, so as to reduce the subsequent repeated tool setting work and thereby improve the processing efficiency.

[0035] Embodiment 2:

[0036] The difference between Example 2 and Example 1 is that, referring to Figure 2The pressing block 5 includes a first rod 51 and a second rod 52. The first rod 51 is provided with a first half groove 55, and the second rod 52 is provided with a second half groove 56. When the first rod 51 and the second rod 52 are spliced ​​and installed, the first half groove 55 and the second half groove 56 are spliced ​​to form a rotating groove, and the first rod 51 and the second rod 52 are fixed by bolts. A steel ball 57 is rotatably connected in the rotating groove, and a contact surface 571 is provided at the lower part of the steel ball 57, and the contact surface 571 is located outside the rotating groove.

[0037] The implementation principle of Example 2 is as follows: a rotatable steel ball 57 is provided on the clamping block 5. During clamping, the abutment surface 571 on the steel ball 57 abuts against the clamping ring 3. Since the steel ball 57 can rotate, the abutment surface 571 can always abut against the clamping ring 3, thereby improving the stability of the clamping.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixture for machining a sprocket, characterized in that: The invention comprises a mounting platform (1) and a mounting base (2) arranged on the mounting platform (1); a mounting cavity is provided on the upper surface of the mounting base (2); a first positioning rod (21) is coaxially arranged on the bottom wall of the mounting cavity; the length of the first positioning rod (21) is greater than the depth of the mounting cavity; a second positioning rod (22) is arranged on the bottom wall of the mounting cavity on one side of the first positioning rod (21); the second positioning rod (22) is slidably connected to the mounting base (2) in a vertical direction; and a first driving member is provided on the mounting base (2) for driving the second positioning rod (22) to slide.

2. A fixture for machining a sprocket according to claim 1, characterized in that: The mounting base (2) is provided with a clamping ring (3), and the clamping ring (3) is used to clamp the sprocket (4) onto the mounting base (2).

3. A fixture for machining a sprocket according to claim 2, characterized in that: The mounting platform (1) is provided with a pressing block (5) for pressing the pressing ring (3), and the mounting platform (1) is provided with a second driving member for driving the pressing block (5) to perform pressing.

4. A fixture for machining a sprocket according to claim 3, characterized in that: The second driving member is a second hydraulic cylinder (54). A connecting rod (53) is provided on the second hydraulic cylinder (54). The lower end of the connecting rod (53) is hinged to the cylinder body of the second hydraulic cylinder (54). The upper end of the connecting rod (53) is hinged to the middle part of the clamping block (5). The piston rod of the second hydraulic cylinder (54) is hinged to one end of the clamping block (5) away from the clamping ring (3).

5. A fixture for machining a sprocket according to claim 3, characterized in that: A plurality of the pressing blocks (5) are provided, and the plurality of the pressing blocks (5) are arranged in a circular array around the axis direction of the pressing ring (3).

6. A fixture for machining a sprocket according to claim 3, characterized in that: An abutment boss (31) is disposed around the outer side of the clamping ring (3), and a guide cone surface (32) is disposed around the side of the abutment boss (31) close to the axis of the clamping ring (3), and the guide cone surface (32) is inclined from the side away from the mounting base (2) to the side close to the mounting base (2) along the direction away from the axis of the clamping ring (3).

7. A fixture for machining a sprocket according to claim 6, characterized in that: A rotation groove is provided at one end of the pressing block (5) close to the pressing ring (3), a steel ball (57) is rotatably connected in the rotation groove, and an abutment surface (571) is provided at the lower part of the steel ball (57), and the abutment surface (571) is located outside the rotation groove.

8. A fixture for machining a sprocket according to claim 7, characterized in that: The pressing block (5) comprises a first rod (51) and a second rod (52); the first rod (51) is provided with a first half groove (55); the second rod (52) is provided with a second half groove (56); the first half groove (55) and the second half groove (56) are spliced ​​to form a rotation groove; the first rod (51) and the second rod (52) are fixed by bolts.

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