Horizontal honing automatic fixture and clamping device including the same

Abstract

The present invention relates to a horizontal honing automatic fixture and a clamping device including the fixture. The fixture includes a first base, a first bracket rotatably and slidably arranged on the first base, a second bracket rotatably and slidably arranged within the first bracket, a chuck movably arranged and used for clamping or releasing a workpiece to be machined, and a first driving mechanism for driving the chucks on both sides to move. The upper and lower ends of the second bracket are respectively provided with a first guiding column and a second guiding column extending in the vertical direction. The upper end portion of the first guiding column penetrates through the upper part of the first bracket and can rotate and slide relative to the first bracket, and the lower end portion of the second guiding column penetrates through the lower part of the first bracket and can rotate and slide relative to the first bracket. By using the fixture of the present invention, the workpiece can float to a certain extent during the machining process, which is convenient for controlling the machining accuracy of the workpiece. Moreover, the first driving mechanism is used to drive the chuck to clamp or release the workpiece, so the workpiece clamping is convenient and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of honing machining, and particularly relates to a horizontal honing automatic fixture and a clamping device including the fixture. Background Art

[0002] During the horizontal honing machining process, for round workpieces, usually sandpaper is wrapped around the workpiece, and the two ends of the sandpaper are clamped by a chuck. The workpiece is clamped by the friction force between the sandpaper and the workpiece. Then, the bolts on both sides of the chuck are manually tightened to lock the chuck, and then the chuck is installed on the machine tool to perform honing machining on the workpiece. The chuck is manually clamped, the clamping is troublesome, the working efficiency is low, and the honing machining accuracy is not easy to control by using the wrapping method of sandpaper to clamp the workpiece. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a horizontal honing automatic fixture with high working efficiency and easy control of machining accuracy.

[0004] The second object of the present invention is to provide a clamping device including the fixture.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A horizontal honing automatic fixture includes a first base. The fixture further includes a first bracket that rotates and slides on the first base through a rotating shaft, a second bracket that rotates and slides within the first bracket, chucks that are movably arranged on opposite sides of the second bracket and are used for clamping or releasing a workpiece to be machined, and a first driving mechanism for driving the chucks on both sides to move to clamp or release the workpiece. First guiding columns and second guiding columns that extend in the vertical direction are respectively provided at the upper and lower ends of the second bracket. The upper end of the first guiding column passes through the upper part of the first bracket and can rotate and slide relative to the first bracket. The lower end of the second guiding column passes through the lower part of the first bracket and can rotate and slide relative to the first bracket. The fixture further includes a support assembly that is arranged below the first bracket and is used for supporting the second guiding column.

[0007] According to some embodiments of the present invention, the central axes of the first guiding column and the second guiding column are collinear.

[0008] According to some embodiments of the present invention, the rotating shaft extends in the horizontal direction.

[0009] According to some embodiments of the present invention, the first bracket is a vertically arranged annular frame, and the second bracket is a vertically arranged annular frame.

[0010] According to some implementation aspects of the present invention, the first driving mechanism is a first air cylinder correspondingly arranged on the side of each chuck. The piston rod of each first air cylinder is connected to the corresponding chuck, and each first air cylinder is arranged on the corresponding side part of the second bracket.

[0011] Further, each first air cylinder is located between the first bracket and the second bracket.

[0012] According to some implementation aspects of the present invention, the support assembly can also be used to adjust the height of the second bracket within the first bracket.

[0013] Further, the support assembly includes a screw rod arranged below the first bracket, a nut sleeve threadedly connected to the screw rod, and a connecting member connected to the nut sleeve and having a groove at its upper end. The lower part of the second guide post is inserted into the groove and abuts against the bottom of the groove. By rotating the nut sleeve, the height of the connecting member is adjusted, and thus the height of the second bracket within the first bracket is adjusted.

[0014] The second technical solution adopted by the present invention: A horizontal honing automatic clamping device, the clamping device includes the above-mentioned horizontal honing automatic fixture and a conveying unit for conveying the workpiece into the chucks on both sides.

[0015] In some preferred and specific implementation manners, the conveying unit includes a second base arranged on the side of the first base, a pneumatic three-jaw chuck movably arranged on the second base and used for gripping or releasing the workpiece, and a second driving mechanism arranged on the second base for driving the pneumatic three-jaw chuck to move. By driving the pneumatic three-jaw chuck to move through the second driving mechanism, the workpiece is conveyed into the chucks on both sides or away from the chucks on both sides.

[0016] Further, the second driving mechanism is a second air cylinder, and the piston rod of the second air cylinder is connected to the pneumatic three-jaw chuck.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] Both the first bracket and the second bracket of the present invention can rotate and slide, so that the workpiece can float to a certain extent during the processing, which is convenient for controlling the processing accuracy of the workpiece. And the first driving mechanism is used to drive the chuck to clamp or release the workpiece, and the workpiece is conveniently clamped, greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic three-dimensional structure diagram of a horizontal honing automatic clamping device according to an embodiment of the present invention;

[0020] Figure 2 The front view structural schematic diagram of the horizontal honing automatic clamping device according to an embodiment of the present invention;

[0021] Figure 3 The side view structural schematic diagram of the horizontal honing automatic clamping device according to an embodiment of the present invention;

[0022] In the figure: 1. The first base; 2. The first bracket; 3. The rotating shaft; 4. The second bracket; 5. The chuck; 6. The first cylinder; 7. The first guiding column; 8. The second guiding column; 9. The supporting assembly; 9a. The screw rod; 9b. The screw sleeve; 9c. The connecting member; 10. The second base; 11. The second cylinder; 12. The pneumatic three-jaw chuck; 13. The workpiece. Specific embodiments

[0023] The present invention will be further described below in conjunction with the specification drawings and specific embodiments:

[0024] See Figures 1 to 3 The shown horizontal honing automatic clamping device includes a fixture and a conveying unit.

[0025] In this example, the fixture includes a first base 1, a first bracket 2 that rotates through a rotating shaft 3 and is slidably arranged on the first base 1, a second bracket 4 that rotates and is slidably arranged within the first bracket 2, chucks 5 that are movably arranged on opposite sides of the second bracket 4 and are used for clamping or releasing a workpiece 13 to be processed, and a first driving mechanism for driving the chucks 5 on both sides to move to clamp or release the workpiece 13. The upper and lower ends of the second bracket 4 are respectively provided with a first guiding column 7 and a second guiding column 8 that extend in the vertical direction. The upper end of the first guiding column 7 passes through the upper part of the first bracket 2 and can rotate and slide relative to the first bracket 2. The lower end of the second guiding column 8 passes through the lower part of the first bracket 2 and can rotate and slide relative to the first bracket 2. The fixture further includes a supporting assembly 9 arranged below the first bracket 2 and used for supporting the second guiding column 8.

[0026] In this example, the rotating shaft 3 extends in the horizontal direction, and the rotation axis of the first bracket 2 extends in the horizontal direction; the axis of the first guiding column 7 and the axis of the second guiding column 8 are collinear, and the rotation axis of the second bracket 4 extends in the vertical direction; the first bracket 2 is a vertically arranged annular frame, and the second bracket 4 is a vertically arranged annular frame.

[0027] The first driving mechanism is a first cylinder 6 correspondingly arranged on the side of each chuck 5. The end of the piston rod of each side's first cylinder 6 is connected to the corresponding chuck 5. Each side's first cylinder 6 is arranged on the corresponding side part of the second bracket 4, and each side's first cylinder 6 is located between the first bracket 2 and the second bracket 4.

[0028] In this example, the support component 9 can also be used to adjust the height of the second bracket 4 within the first bracket 2, thereby adjusting the height at which the workpiece 13 is located. The support component 9 includes a screw rod 9a disposed below the first bracket 2, a screw sleeve 9b threadedly connected to the screw rod 9a, and a connecting member 9c connected to the screw sleeve 9b and having a groove at its upper end. The lower end of the second guide post 8 is inserted into the groove and abuts against the bottom of the groove. By rotating the screw sleeve 9b, the height of the connecting member 9c is adjusted, and thus the height of the second bracket 4 within the first bracket 2 is adjusted to ensure that the workpiece 13 is at the central position of the fixture.

[0029] In this example, the conveying unit is used to convey the workpiece 13 into the two-side chuck 5. The conveying unit includes a second base 10 disposed on the side of the first base 1, a pneumatic three-jaw chuck 12 movably disposed on the second base 10 and used to grip or release the workpiece 13, and a second driving mechanism disposed on the second base 10 and used to drive the pneumatic three-jaw chuck 12 to move. The second driving mechanism drives the pneumatic three-jaw chuck 12 to move to convey the workpiece 13 into or away from the two-side chuck 5.

[0030] The second driving mechanism is a second cylinder 11. The end of the piston rod of the second cylinder 11 is connected to the pneumatic three-jaw chuck 12. The second cylinder 11 horizontally conveys the workpiece 13 into the two-side chuck 5, and the stroke of the second cylinder 11 is adjustable to ensure accurate positioning of the workpiece 13. The stroke of the first cylinder 6 is adjustable, and the pressure for the chuck 5 to grip the workpiece 13 is adjustable to prevent deformation of the workpiece 13.

[0031] The working principle of the clamping device provided above:

[0032] The workpiece 13 is manually or automatically placed at the central position of the pneumatic three-jaw chuck 12. The pneumatic three-jaw chuck 12 grips the workpiece 13. The second cylinder 11 operates to push the pneumatic three-jaw chuck 12 to horizontally send the workpiece 13 to the middle of the two-side chuck 5. The first cylinder 6 operates to drive the two-side chuck 5 to clamp the workpiece 13. The pneumatic three-jaw chuck 12 releases the workpiece 13, and the second cylinder 11 resets.

[0033] Rotate the screw sleeve 9b to finely adjust the workpiece 13 to ensure that the workpiece 13 is at the center of the first bracket 2.

[0034] During the honing process of the workpiece 13, the first bracket 2 can move slightly in the X-axis direction along the rotating shaft 3 and can rotate slightly around the rotating shaft 3; the second bracket 4 can move slightly in the Z-axis direction and can rotate slightly around the first guide post 7 and the second guide post 8 to achieve the floating of the workpiece 13 and ensure the honing accuracy of the workpiece 13.

[0035] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A horizontal honing automatic fixture, including a first base, Characterized in that: The fixture further includes a first bracket that rotates and slides on the first base through a rotating shaft, a second bracket that rotates and slides within the first bracket, chucks that are movably arranged on opposite sides of the second bracket and are used to clamp or release the workpiece to be processed, and a first driving mechanism that drives the chucks on both sides to move to clamp or release the workpiece. First guiding columns and second guiding columns extending in the vertical direction are respectively provided at the upper and lower ends of the second bracket. The upper end of the first guiding column passes through the upper part of the first bracket and can rotate and slide relative to the first bracket. The lower end of the second guiding column passes through the lower part of the first bracket and can rotate and slide relative to the first bracket. The fixture further includes a support assembly arranged below the first bracket and used to support the second guiding column. The first driving mechanism is a first air cylinder correspondingly arranged on the side of each chuck. The piston rod of each first air cylinder is connected to the corresponding chuck. Each first air cylinder is arranged on the corresponding side part of the second bracket. The support assembly can also be used to adjust the height of the second bracket within the first bracket. The support assembly includes a screw rod arranged below the first bracket, a nut sleeve threadedly connected to the screw rod, and a connecting piece connected to the nut sleeve and having a groove at the upper end. The lower part of the second guiding column is inserted into the groove and abuts against the bottom of the groove. By rotating the nut sleeve, the height of the connecting piece is adjusted, and thus the height of the second bracket within the first bracket is adjusted.

2. The horizontal honing automatic fixture according to claim 1, Characterized in that: The axis lines of the first guiding column and the second guiding column are collinear; and / or, the rotating shaft extends in the horizontal direction.

3. The horizontal honing automatic fixture according to claim 1, Characterized in that: The first bracket is a vertically arranged annular frame, and the second bracket is a vertically arranged annular frame.

4. The horizontal honing automatic fixture according to claim 1, Characterized in that: Each first air cylinder is located between the first bracket and the second bracket.

5. A horizontal honing automatic clamping device, Characterized in that: The clamping device includes the horizontal honing automatic fixture according to any one of claims 1 to 4 and a conveying unit for conveying the workpiece into the chucks on both sides.

6. The horizontal honing automatic clamping device according to claim 5, Characterized in that: The conveying unit includes a second base arranged on the side of the first base, a pneumatic three-jaw chuck that is movably arranged on the second base and is used to grip or release the workpiece, and a second driving mechanism arranged on the second base for driving the pneumatic three-jaw chuck to move. By driving the pneumatic three-jaw chuck to move by the second driving mechanism, the workpiece is conveyed into the chucks on both sides or away from the chucks on both sides.

7. The horizontal honing automatic clamping device according to claim 6, Characterized in that: The second driving mechanism is a second air cylinder, and the piston rod of the second air cylinder is connected to the pneumatic three-jaw chuck.

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