Lifting type double-head milling machine and combined clamp thereof

Abstract

The utility model relates to the technical field of milling machine fixtures, in particular to a lifting type double-head milling machine and a combined fixture thereof. Comprising a mounting base, supporting rods mounted on the front side and the rear side of the mounting base, a mounting plate mounted at the upper ends of the supporting rods, a clamping air cylinder mounted in the middle of the mounting plate and a rotating assembly mounted on the mounting base and located between the two supporting rods. The rotating assembly comprises a rotating base, a driving motor installed in the rotating base and a rotating clamping plate fixedly installed on the driving motor, the output end of the clamping air cylinder penetrates through the installing plate to be located over the rotating clamping plate, and the output end of the clamping air cylinder and the axis are concentric with the rotating clamping plate. The four faces of the workpiece can be machined by workers without disassembling and assembling the workpiece, and the purpose that the workers can fix the workpiece more conveniently is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of milling machine fixtures, and in particular to a lifting double-head milling machine and a combined fixture thereof. Background Art

[0002] The lifting double-head milling machine uses two independent milling heads to mill both sides of the workpiece simultaneously, achieving "one-time clamping and double-sided forming", reducing the error caused by repeated clamping and improving efficiency by more than 2 times. The traditional process requires two steps to mill both sides of the workpiece, while the double-head milling machine only requires one step. Its specific structure includes a base, a bed mounted on the base, a lifting double milling head system mounted on the bed, a movable workbench system mounted on the bed and located between the double milling head systems, and a clamp mounted on the movable workbench system for fixing tools, wherein the clamp specifically includes a mounting plate fixedly mounted on the movable workbench system, two threaded rods located at the front and rear sides of the mounting plate and rotatably connected to the mounting plate, and a clamp located at the upper ends of the two threaded rods and threadedly connected to the two threaded rods. In the prior art, the workpiece is placed on the mounting plate and then the two threaded rods are screwed to drive the clamp downward, and the clamp cooperates with the mounting plate to clamp the upper and lower sides of the workpiece to fix the workpiece.

[0003] Although the clamps in the prior art can fix the workpiece, the threaded rod needs to be screwed each time the workpiece is disassembled and assembled, which makes the workpiece fixing step more cumbersome. In addition, after the staff has processed both sides of the workpiece each time, they need to disassemble the workpiece and then process the other two sides of the workpiece, which makes the workpiece fixing step even more cumbersome. For this reason, the present application proposes a lifting double-head milling machine and a combined clamp thereof, which are used to make it more convenient for the workpiece personnel to fix the workpiece. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide a lifting double-head milling machine and a combined clamp thereof, which are used to make it more convenient for workers to fix the workpiece.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions: a combined clamp, including a mounting base, support rods installed on the front and rear sides of the mounting base, a mounting plate installed on the upper end of the support rods, a clamping cylinder installed in the middle of the mounting plate, and a rotating assembly installed on the mounting base and located between the two support rods, the rotating assembly including a rotating base, a driving motor installed in the rotating base, and a rotating clamping plate fixedly installed on the driving motor, the output end of the clamping cylinder passes through the mounting plate and is located directly above the rotating clamping plate and is concentric with the axis and the rotating clamping plate.

[0006] By adopting the above technical solution, when the staff needs to clamp the workpiece, they only need to place the workpiece on the rotating clamp, and then start the clamping cylinder to extend, so that the output end of the clamping cylinder extends to press against the top surface of the workpiece, and the workpiece can be fixed. When the other two sides of the workpiece need to be processed, they only need to start the clamping cylinder to contract, so that the output end of the clamping cylinder no longer presses against the workpiece, and then drive the motor so that the output end of the drive motor drives the rotating clamp to rotate, and the rotating rotating clamp drives the workpiece to rotate, so that the other two sides of the workpiece are aligned with the double milling head, so that the staff can process the four sides of the workpiece without disassembling the workpiece, thereby achieving the purpose of making it more convenient for the staff to fix the workpiece.

[0007] Furthermore, adjustment components for mounting on a double-head milling machine to clamp both sides of a workpiece are provided on both sides of the mounting base.

[0008] Furthermore, the adjustment assembly includes a leveling cylinder, an adjustment cylinder, a leveling plate installed on the output end of the leveling cylinder, and an adjustment plate installed on the adjustment cylinder, and the output end of the leveling cylinder and the output end of the adjustment cylinder are arranged relative to each other.

[0009] By adopting the above technical solution, although the setting of the rotating component allows the staff to process the four sides of the workpiece without disassembling the workpiece, when the rotating clamp rotates, the centrifugal force of the rotation may cause the workpiece to twist, causing the two sides of the workpiece to face the double milling head at an inclined angle, resulting in the double milling head being unable to accurately process the workpiece during subsequent processing. The setting of the adjustment component solves this technical problem. By adjusting the setting of the component, the leveling cylinder and the adjustment cylinder must first be installed on one side of the double milling head in the double-head milling machine (care should be taken during the installation process to ensure that the planes of the leveling plate and the adjustment plate are flush with the working surface of the double milling head). After the workpiece completes the rotation, the staff starts the leveling cylinder and the adjustment cylinder to extend so that the leveling plate and the adjustment plate clamp both sides of the workpiece, so that the workpiece is returned to the center. In this way, during processing, the workpiece will not face the double milling head at an inclined angle, so that the double-head milling machine can accurately process the workpiece.

[0010] Furthermore, the area of ​​the flattening plate is larger than the area of ​​the adjusting plate.

[0011] By adopting the above technical solution, although the setting of the adjustment component can enable the double-head milling machine to accurately process the workpiece, when the left and right structures of the workpiece to be processed are asymmetrical (such as a special-shaped workpiece with a protrusion on one side and a flat surface on the other side), two clamps with the same area clamp the special-shaped workpiece, and the protrusion of the special-shaped workpiece will affect the clamping of the flat plate and the adjustment plate, that is, the protrusion of the special-shaped workpiece will cause the middle part of the flat plate or adjustment plate in contact with the protrusion to be subjected to concentrated force, causing the flat plate or adjustment plate to be easily deformed, causing damage to the flat plate or adjustment plate. This technical problem can be solved by setting the flat plate to have an area larger than the area of ​​the adjustment plate. When it is necessary to process the special-shaped workpiece, the side of the special-shaped workpiece with the protrusion is placed towards the adjustment plate, and then the flattening cylinder and the adjustment cylinder are started to make the flat plate fit the flat surface of the special-shaped workpiece, and the adjustment plate fit the protrusion of the workpiece. Because the area of ​​the adjustment plate is smaller, the distance between the middle part and the two sides is shorter, thereby making the toughness of the middle part of the adjustment plate stronger, thereby improving the service life of the adjustment plate.

[0012] Furthermore, the flattening plate and the adjusting plate are both made of high-strength alloy steel.

[0013] By adopting the above technical solution, the flattening plate and the adjusting plate made of high-strength alloy steel can have high compressive / tensile strength and high fatigue life, which greatly improves the service life of the high fatigue life.

[0014] Furthermore, an auxiliary limiting strip is fixedly provided on one side of the leveling plate opposite to one side of the adjustment plate.

[0015] By adopting the above technical solution and setting up the auxiliary limit strips, when the staff encounters a special-shaped part with even protrusions on both sides, they can adjust the position of the workpiece through the movable worktable system on the double-head milling machine so that the auxiliary limit strips are aligned with the protrusions of the special-shaped workpiece (if the protrusions on both sides of the special-shaped workpiece are symmetrical, the auxiliary limit strips should be aligned with the protrusions of the special-shaped workpiece in priority). In this way, when the leveling plate and the adjustment plate clamp the workpiece, the stress on the middle part of the leveling plate can be reduced, thereby further improving the service life of the leveling plate.

[0016] Furthermore, the auxiliary limiting strip and the flat plate are formed integrally.

[0017] The present application also provides a lifting double-head milling machine, comprising a milling machine body and a combined clamp installed on the milling machine body, wherein the combined clamp is any one of the combined clamps described above.

[0018] The combined clamp provided by the present application includes a mounting base, support rods mounted on the front and rear sides of the mounting base, a mounting plate mounted on the upper end of the support rods, a clamping cylinder mounted in the middle of the mounting plate, and a rotating assembly mounted on the mounting base and located between the two support rods, the rotating assembly includes a rotating base, a driving motor mounted in the rotating base, and a rotating clamping plate fixedly mounted on the driving motor, the output end of the clamping cylinder passes through the mounting plate and is located directly above the rotating clamping plate and is concentric with the axis and the rotating clamping plate. The combined clamp provided by the present application uses the clamping cylinder and the rotating assembly to cooperate. When the staff When the workpiece needs to be clamped, it is only necessary to place the workpiece on the rotating clamping plate, and then start the clamping cylinder to extend so that the output end of the clamping cylinder extends and presses against the top surface of the workpiece to fix the workpiece. When the other two sides of the workpiece need to be processed, it is only necessary to start the clamping cylinder to contract so that the output end of the clamping cylinder no longer presses against the workpiece, and then drive the motor so that the output end of the drive motor drives the rotating clamping plate to rotate, and the rotating rotating clamping plate drives the workpiece to rotate so that the other two sides of the workpiece are aligned with the double milling head, so that the staff can process the four sides of the workpiece without disassembling the workpiece, thereby achieving the purpose of making it more convenient for the staff to fix the workpiece.

[0019] The lifting double-head milling machine provided in this application is provided with the above-mentioned combined clamp. Since the above-mentioned combined clamp has the above-mentioned technical effect, the lifting double-head milling machine provided with the combined clamp should also have the corresponding technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a schematic diagram of the overall structure of the embodiment;

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0022] Figure 3 yes Figure 1 Enlarged view of part B in the middle.

[0023] Figure numerals: 1. Milling machine body; 2. Mounting base; 20. Support rod; 21. Mounting plate; 22. Clamping cylinder; 3. Rotating assembly; 30. Rotating base; 31. Rotating clamp; 4. Adjusting assembly; 40. Leveling cylinder; 41. Adjusting cylinder; 42. Leveling plate; 43. Adjusting plate; 44. Auxiliary limit strip. DETAILED DESCRIPTION

[0024] The core of this application is to provide a modular fixture that allows workers to process all four sides of a workpiece without disassembling it, making it more convenient for workers to fix the workpiece and improving their production efficiency. Another core of this application is to provide a lifting double-head milling machine including the modular fixture.

[0025] The present application is further described in detail below with reference to the accompanying drawings.

[0026] Example, see Figure 1 A lifting double-head milling machine and its combined clamp, including a milling machine body 1 and a combined clamp installed on the milling machine body 1, the combined clamp includes a mounting base 2, support rods 20 installed on the front and rear sides of the mounting base 2, a mounting plate 21 installed on the upper end of the support rod 20, a clamping cylinder 22 installed in the middle of the mounting plate 21, and a rotating assembly 3 installed on the mounting base 2 and located between the two support rods 20. The rotating assembly 3 includes a rotating base 30, a driving motor (not shown in the figure) installed in the rotating base 30, and a rotating clamping plate 31 fixedly installed on the driving motor. The output end of the clamping cylinder 22 passes through the mounting plate 21 and is located directly above the rotating clamping plate 31 and is aligned with the axis and the rotating clamp The plate 31 is concentric, wherein the mounting base 2 can be detachably mounted on the movable workbench system by means of bolts or electromagnets. As for the support rod 20, it can be detachably mounted on the mounting base 2 by means of magnetism or bolts. As for the mounting plate 21, it can be mounted on the support rod 20 by means of welding, magnetism or bolts. As for the rotating base 30, it can be detachably mounted on the mounting base 2 by means of bolts or electromagnets. As for the driving motor, a servo motor can be used. The servo motor can accurately control the position to ensure that the other two sides of the workpiece are aligned with the double milling head after the rotating splint 31 rotates. As for the rotating splint 31, it can be mounted on the output end of the driving motor by means of welding or bolts.

[0027] When the staff needs to clamp the workpiece, they only need to place the workpiece on the rotating clamping plate 31, and then start the clamping cylinder 22 to extend, so that the output end of the clamping cylinder 22 extends to support the top surface of the workpiece, and the workpiece can be fixed. When the other two sides of the workpiece need to be processed, they only need to start the clamping cylinder 22 to contract, so that the output end of the clamping cylinder 22 no longer supports the workpiece, and then drive the motor so that the output end of the drive motor drives the rotating clamping plate 31 to rotate, and the rotating rotating clamping plate 31 drives the workpiece to rotate, so that the other two sides of the workpiece are aligned with the double milling heads, so that the staff can process the four sides of the workpiece without disassembling the workpiece, thereby achieving the purpose of making it more convenient for the staff to fix the workpiece.

[0028] Although the setting of the rotating assembly 3 allows the staff to process the four sides of the workpiece without disassembling the workpiece, when the rotating clamping plate 31 rotates, the centrifugal force of the rotation may cause the workpiece to twist, causing the two sides of the workpiece to face the double milling head at an inclined angle, resulting in the double milling head being unable to accurately process the workpiece during subsequent processing. In order to solve this technical problem, reference is made to Figure 2 as well as Figure 3In this embodiment, an adjustment assembly 4 for mounting on a double-head milling machine to clamp the two sides of the workpiece is provided on both sides of the mounting base. The adjustment assembly 4 includes a leveling cylinder 40, an adjustment cylinder 41, a leveling plate 42 mounted on the output end of the leveling cylinder 40, and an adjustment plate 43 mounted on the adjustment cylinder 41. The output end of the leveling cylinder 40 and the output end of the adjustment cylinder 41 are arranged relative to each other. Through the arrangement of the adjustment assembly 4, the leveling cylinder 40 and the adjustment cylinder 41 need to be respectively mounted on one side of the double milling head in the double-head milling machine (installation). During the installation process, it should be noted that the planes of the leveling plate 42 and the adjustment plate 43 should be flush with the working surface of the double milling head). After the workpiece has completed its rotation, the staff starts the leveling cylinder 40 and the adjustment cylinder 41 to extend, so that the leveling plate 42 and the adjustment plate 43 clamp both sides of the workpiece, so that the workpiece is returned to the center. In this way, during processing, the workpiece will not appear to face the double milling head at an inclined angle, so that the double-head milling machine can accurately process the workpiece. In other embodiments, the leveling cylinder 40 and the adjustment cylinder 41 can be replaced by electric cylinders.

[0029] Although the setting of the adjustment assembly 4 can enable the double-head milling machine to accurately process the workpiece, when the left and right structures of the workpiece to be processed are asymmetrical (such as a special-shaped workpiece with a protrusion on one side and a flat surface on the other side), two clamping plates with the same area clamp the special-shaped workpiece. The protrusion of the special-shaped workpiece will affect the clamping of the flattening plate 42 and the adjustment plate 43. That is, the protrusion of the special-shaped workpiece will cause the middle part of the flattening plate 42 or the adjustment plate 43 that contacts the protrusion to be subjected to concentrated force, causing the flattening plate 42 or the adjustment plate 43 to be easily deformed, resulting in damage to the flattening plate 42 or the adjustment plate 43. In order to solve this technical problem, in this embodiment, the area of ​​the flattening plate 42 is set to be larger than the area of ​​the adjustment plate 43.

[0030] When it is necessary to process a special-shaped workpiece, place the special-shaped workpiece with the raised side facing the adjustment plate 43, and then start the leveling cylinder 40 and the adjustment cylinder 41 to make the leveling plate 42 fit the flat surface of the special-shaped workpiece, and make the adjustment plate 43 fit the raised surface of the workpiece. Because the area of ​​the adjustment plate 43 is smaller, the distance between the middle and the two sides is shorter, which makes the toughness of the middle part of the adjustment plate 43 stronger, thereby improving the service life of the adjustment plate 43.

[0031] In this embodiment, an auxiliary limit strip 44 is fixedly provided on one side of the leveling plate 42 opposite to the adjustment plate 43. The auxiliary limit strip 44 is integrally formed with the leveling plate 42. Through the setting of the auxiliary limit strip 44, when the staff encounters a special-shaped part with uniform protrusions on both sides, the position of the workpiece can be adjusted through the movable worktable system on the double-head milling machine so that the auxiliary limit strip 44 is aligned with the protrusion of the special-shaped workpiece (if the protrusions on both sides of the special-shaped workpiece are symmetrical, the auxiliary limit strip 44 should be aligned with the protrusion of the special-shaped workpiece in priority). In this way, when the leveling plate 42 and the adjustment plate 43 clamp the workpiece, the stress on the middle part of the leveling plate 42 can be reduced, thereby further improving the service life of the leveling plate 42.

[0032] In this embodiment, the flattening plate 42 and the adjustment plate 43 are both made of high-strength alloy steel. The flattening plate 42 and the adjustment plate 43 made of high-strength alloy steel can make the flattening plate 42 and the adjustment plate 43 have high compressive / tensile strength and high fatigue life, which greatly improves the service life of the high fatigue life.

[0033] Specific implementation process: Place the workpiece on the rotating clamping plate 31, then adjust the position of the workpiece through the movable worktable system on the double-head milling machine so that the workpiece moves between the leveling plate 42 and the adjustment plate 43, then start the leveling cylinder 40 and the adjustment cylinder 41, so that the leveling plate 42 and the adjustment plate 43 clamp both sides of the workpiece to straighten the workpiece, then start the clamping cylinder 22 to extend so that the output end of the clamping cylinder 22 extends to press against the top surface of the workpiece to fix the workpiece;

[0034] When the other two sides of the workpiece need to be processed, it is only necessary to start the clamping cylinder 22 to contract so that the output end of the clamping cylinder 22 no longer presses against the workpiece, and then drive the motor so that the output end of the drive motor drives the rotating clamp 31 to rotate, and the rotating rotating clamp 31 drives the workpiece to rotate so that the other two sides of the workpiece are aligned with the double milling head, and then start the leveling cylinder 40 and the adjustment cylinder 41 so that the leveling plate 42 and the adjustment plate 43 clamp the two sides of the workpiece to straighten the workpiece, and then start the clamping cylinder 22 to extend so that the output end of the clamping cylinder 22 extends to press against the top surface of the workpiece to fix the workpiece.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A combined clamp, characterized in that: The invention comprises a mounting base (2), support rods (20) mounted on the front and rear sides of the mounting base (2), a mounting plate (21) mounted on the upper end of the support rods (20), a clamping cylinder (22) mounted in the middle of the mounting plate (21), and a rotating assembly (3) mounted on the mounting base (2) and located between the two support rods (20). The rotating assembly (3) comprises a rotating base (30), a driving motor mounted in the rotating base (30), and a rotating clamping plate (31) fixedly mounted on the driving motor. The output end of the clamping cylinder (22) passes through the mounting plate (21) and is located directly above the rotating clamping plate (31) and is concentric with the axis and the rotating clamping plate (31).

2. A combined clamp according to claim 1, characterized in that: Adjustment components (4) for mounting on a double-head milling machine to clamp both sides of a workpiece are provided on both sides of the mounting base (2).

3. A combined clamp according to claim 2, characterized in that: The adjustment assembly (4) comprises a leveling cylinder (40), an adjustment cylinder (41), a leveling plate (42) mounted on the output end of the leveling cylinder (40), and an adjustment plate (43) mounted on the adjustment cylinder (41), wherein the output end of the leveling cylinder (40) and the output end of the adjustment cylinder (41) are arranged opposite to each other.

4. A combined clamp according to claim 3, characterized in that: The area of ​​the flattening plate (42) is larger than the area of ​​the adjusting plate (43).

5. A combined clamp according to claim 3, characterized in that: The flattening plate (42) and the adjusting plate (43) are both made of high-strength alloy steel.

6. A combined clamp according to claim 3, characterized in that: An auxiliary limiting strip (44) is fixedly provided on one side of the leveling plate (42) opposite to one side of the adjustment plate (43).

7. A combined clamp according to claim 6, characterized in that: The auxiliary limiting strip (44) and the flattening plate (42) are integrally formed.

8. A lifting double-head milling machine, comprising a milling machine body (1) and a combined clamp mounted on the milling machine body (1), characterized in that: The combined clamp is a combined clamp as described in any one of claims 1 to 7.

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