End face milling clamp

Abstract

The utility model relates to the field of clamps for machine tool machining, and provides an end face milling clamp which comprises a support assembly, the support assembly is provided with a placement station, a limiting seat for abutting and limiting a stand column plate is arranged on the outer side of the placement station, and a clamp unit for pressing and fixing the stand column plate is arranged above the placement station; a knocking unit is arranged on the outer side of the placement station and comprises a movable base slidably mounted on the support assembly, a deflection frame rotationally arranged on the movable base and a driving mechanism used for driving the movable base to move; a roller hammer is arranged at one side end of the deflection frame; the side end, away from the roller hammer, of the deflection frame is arranged as a force bearing end, and an impact mechanism used for impacting the force bearing end is fixed to the movable base. On the basis, after the stand column plates are sequentially stacked and placed on the placing station, all the stand column plates can be rapidly made to abut against the limiting seats to align the to-be-machined faces, the labor intensity of operators can be relieved, and the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of fixtures for machine tool processing, and in particular to an end milling fixture. Background Art

[0002] End milling machines are widely used for end face cutting of metal materials such as castings and steel parts, and play an important role in processing forklift parts.

[0003] The forklift mast is the main load-bearing structure of the forklift picking device, and is composed of an inner mast, an outer mast, a fork frame, forks, sprockets, chains, lifting cylinders and tilting cylinders. Among them, the fork frame with the forks installed is the key load-bearing part of the forklift mast. A column plate will be installed at the base of the fork frame. The column plate can be fixed to the fork frame by full welding to increase the rigidity and stability of the base. The existing column plate is also often used directly as a supporting structure for the fork frame column, especially when it needs to withstand a large vertical load.

[0004] As a key load-bearing component of the forklift mast, the column plate requires excellent bending strength and is typically installed snugly against the vehicle frame. Initially, the end surface of the column plate is uneven. For columns that require precise fit, this unevenness can increase the fit gap and reduce fit accuracy. Therefore, the column plate is milled before use to remove surface irregularities and achieve a flat, smooth end surface.

[0005] Reference Figure 1 In the prior art, the milling of column plates is usually carried out on a milling machine, and usually multiple plates are processed at one time; first, the column plates need to be stacked in sequence on the end face milling fixture, and the side of each column plate facing away from the surface to be processed is against the limit seat 2, so that the surfaces to be processed of each column plate can be aligned with each other and located in the same plane; then, the pressure plate 52 is adjusted to move downward to press and fix each column plate, which can facilitate the smooth progress of the milling operation.

[0006] However, when the column plates are stacked in sequence on the end face milling fixture and against the limit seat, it cannot be ensured that the surfaces to be processed of the column plates are in the same plane. The operator needs to use a hammer to knock on each column plate one by one, so that each column plate is tightly against the limit seat before the subsequent pressure plate can press and fix the column plate. The operation of manually knocking on the column plate is time-consuming and labor-intensive, resulting in low efficiency in workpiece milling, which needs to be improved. Utility Model Content

[0007] Based on this, the present application provides an end milling fixture that can quickly press each column plate against the limit seat to align the surface to be processed after the column plates are stacked and placed in sequence at the placement station, which is beneficial to reduce the labor intensity of the operators and improve work efficiency.

[0008] The face milling fixture provided in this application adopts the following technical solution:

[0009] An end milling fixture includes a support assembly, the support assembly is provided with a placement station, a limit seat for a column plate to abut and limit the position is provided on the outer side of the placement station, and a fixture unit for pressing and fixing the column plate is provided above the placement station;

[0010] A striking unit is provided outside the placement station, comprising a mobile base slidably mounted on a support assembly, a yaw frame rotatably mounted on the mobile base, and a driving mechanism for driving the mobile base to move; a roller hammer is provided at one end of the yaw frame, and in an initial state, the roller hammer's rotation path around the rotation center of the yaw frame passes through the placement station;

[0011] One end of the yaw frame away from the roller hammer is set as the load-bearing end, and the mobile base is fixed with an impact mechanism for impacting the load-bearing end; when the impact mechanism is in the initial state, the impact mechanism is located outside the moving path of the load-bearing end around the rotation center of the yaw frame.

[0012] By adopting the above-mentioned technical solution, after the column plates are stacked and placed in the placement station, the impact mechanism is controlled to abut against the load-bearing end of the deflection frame, and the deflection frame can rotate around the rotational connection between itself and the movable base. The lever principle can be used to make the roller hammer abut against the processing surface of each column plate, thereby forcing each column plate to move inward and abut against the limit seat, so that the processing surfaces of each column plate are aligned with the same plane, which helps to reduce the labor intensity of the workers and improve work efficiency. Then, the clamp unit is used to press and fix each column plate, and the driving mechanism is controlled to drive the movable base inward. After the roller hammer abuts against the processing surface of the column plate, it can be forced to deflect outward. Since the impact mechanism is located outside the load-bearing end movement path in the initial state, the roller hammer can eventually move smoothly to the inside of the processing surface of the column plate, so that the subsequent milling cutter device can smoothly mill the processing surface of the column plate.

[0013] Optionally, the impact mechanism includes a sliding seat slidably mounted on a movable base and a pushing assembly for driving the sliding seat to move. A plurality of impact components are provided on the side of the sliding seat close to the deflection frame, and the impact components are used to partially abut against the load-bearing end.

[0014] By adopting the above-mentioned technical solution, the movement of the pushing assembly is controlled to drive the impact component to move toward the direction close to the deflection frame. The impact component can be against the load-bearing end of the deflection frame, and the roller hammer on the other side of the deflection frame is pressed against the surface to be processed of the column plate through the lever principle, so that each column plate can be automatically arranged and aligned in the same plane.

[0015] Optionally, the pushing assembly includes a cam component rotatably mounted on the movable base and a first motor for driving the cam component to rotate; a contact column is partially fixed to the sliding seat, and a return spring is provided between the sliding seat and the movable base, and the return spring is used to force the contact column to normally abut against the cam component.

[0016] By adopting the above-mentioned technical solution, the sliding seat normally causes the abutment column to abut against the cam component under the elastic force of the return spring. When the first motor is controlled to operate to drive the cam component to rotate circumferentially around its own central axis, the cam component can force the abutment column and the sliding seat to move repeatedly, thereby forming an effect in which the impact component repeatedly impacts the deflection frame, so that the roller hammer can repeatedly strike each column plate, which is more conducive to the alignment of each surface to be processed of the column plate to the same plane.

[0017] Optionally, the movable base is fixed with a protective cover for covering the striking unit, the protective cover is provided with a structural groove, and one side end of the yaw frame with a roller hammer passes through the structural groove and is exposed on the protective cover.

[0018] By adopting the above-mentioned technical solution, a protective cover is set up to cover the knocking unit. On the one hand, it can reduce the situation where the operator's hands are accidentally injured by the knocking unit. On the other hand, it can reduce the possibility of powder debris generated during the milling process falling on the knocking unit, so as to ensure the normal operation of the knocking unit and maintain a good mechanical life.

[0019] Optionally, the roller hammer is rotatably mounted on the yaw frame.

[0020] By adopting the above technical solution, the roller hammer is rotatably installed on the eccentric frame. When the impact mechanism is activated to drive the roller hammer to press against the surface to be processed of the column plate, relative rolling can occur between the roller hammer and the column plate, which is beneficial to reduce the damage to the surface of the roller hammer and enable the roller hammer to maintain a good mechanical life.

[0021] Optionally, the driving mechanism includes a screw rod rotatably mounted on the surface of the mobile base and a second motor for driving the screw rod to rotate. A transmission seat is partially provided on the mobile base, and the screw rod passes through the transmission seat and is threadedly connected to the transmission seat.

[0022] By adopting the above-mentioned technical solution, by controlling the operation of the driving motor to drive the screw to rotate, the transmission seat threadedly connected to the screw can move along the axial direction of the screw, thereby smoothly driving the entire striking unit to move, so as to smoothly retract the roller hammer to the inner side of the surface to be processed of the column plate.

[0023] Optionally, the clamp unit includes an elevated seat fixed to the surface of the support assembly and a pressure plate rotatably connected to the elevated seat; a threaded rod is detachably fixed to the surface of the support assembly, and the pressure plate is provided with a vertical through-hole, and the pressure plate is movably sleeved on the threaded rod through the through-hole; the threaded rod is threadedly connected with an adjusting nut for forcing the pressure plate to be pressed and fixed to the column plate.

[0024] By adopting the above-mentioned technical solution, when each column plate is stacked and placed in the placement station in sequence, the pressure plate will be located above each column plate. By rotating the adjusting nut to move it downward along the axial direction of the threaded rod, the adjusting nut can push the pressure plate downward and finally make the pressure plate rest against the topmost column plate, thereby pressing and fixing each pressure plate.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By setting the impact unit to abut against the deflection frame and drive the deflection frame to rotate, the lever principle can be used to make the roller hammer abut against the processing surface of each column plate, thereby forcing the processing surface of each column plate to be aligned with the same plane, which is conducive to reducing the labor intensity of the operators and improving the working efficiency;

[0027] 2. By setting a driving mechanism to drive the movable base to move inward, after the clamp unit presses and fixes each column plate, the roller hammer and the entire impact unit can be moved to the inside of the surface to be processed of the column plate, so that the subsequent milling cutter device can smoothly mill the surface to be processed of the column plate;

[0028] 3. By setting up a protective cover, on the one hand, it can reduce the possibility of accidental injury to the operator's hands by the knocking unit, and on the other hand, it can reduce the possibility of powder debris generated during the milling process falling on the knocking unit, so as to ensure the normal operation of the knocking unit and maintain a good mechanical life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the face milling fixture in the background art;

[0030] Figure 2 It is an overall structural diagram of an embodiment of the present application;

[0031] Figure 3 This is a partial view of the overall structure of the embodiment of the present application, mainly showing the structure of the knocking unit;

[0032] Figure 4 It is a partial structural diagram of the impact mechanism and the deflection frame in the embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. Support assembly; 11. Placement station; 12. First slide rail; 13. Guide rail; 14. Fixed support; 2. Limit seat; 3. Knocking unit; 31. Moving base; 311. Transmission seat; 312. Second slide rail; 313. Spring seat; 32. Swing frame; 321. Roller hammer; 322. Load-bearing end; 323. Rotating shaft rod; 324. Tension spring; 33. Screw rod; 34. Second motor; 4. Impact mechanism; 41. Sliding seat; 411. Impact component; 412. Abutment column; 42. Cam component; 43. First motor; 44. Reset spring; 5. Clamp unit; 51. Elevation seat; 52. Pressure plate; 53. Threaded rod; 54. Adjusting nut; 6. Protective cover; 61. Structural groove; 7. Milling cutter device. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2-4 This application is described in further detail.

[0035] An embodiment of the present application discloses an end face milling fixture, which is arranged on a milling machine and is used to press and fix a column plate.

[0036] Reference Figure 2 A face milling fixture includes a support assembly 1, a guide rail 13 being fixed to one side of the support assembly 1. A milling cutter device 7 on a milling machine is slidably mounted on the guide rail 13, allowing the milling cutter device 7 to move smoothly along the extension direction of the guide rail 13. The support assembly 1 is provided with a placement station 11, where each column plate can be stacked and placed in sequence. A limit seat 2 is provided on the side of the placement station 11 away from the guide rail 13. The side of the limit seat 2 near the placement station 11 is a vertical plane, which can be used for the column plates to abut and limit after they are stacked and placed in the placement station 11.

[0037] Two sets of striking units 3 are installed outside the placement station 11, symmetrically arranged on either side of the length of the placement station 11. The striking units 3 comprise a movable base 31, a yaw frame 32, and a drive mechanism. A first slide rail 12 is fixed to the surface of the support assembly 1, extending perpendicularly to the guide rail 13. A first slider is fixed to the bottom surface of the movable base 31, slidably mounted on the first slide rail 12, enabling the movable base 31 to move across the surface of the support assembly 1.

[0038] The driving mechanism includes a screw rod 33 and a second motor 34. Two fixed supports 14 are fixed on the surface of the support assembly 1. The screw rod 33 is rotatably arranged between the two fixed supports 14. The second motor 34 is fixed to the surface of the support assembly 1. The output end of the second motor 34 is coaxially connected to the screw rod 33, so that the second motor 34 can drive the screw rod 33 to rotate around its own central axis when it is running. In addition, refer to Figure 2A transmission seat 311 is fixed at a local position on the bottom surface of the mobile base 31. The screw rod 33 is passed through the transmission seat 311 and is threadedly connected to the transmission seat 311, so that the rotation of the screw rod 33 can drive the transmission seat 311 and the mobile base 31 to move smoothly.

[0039] The deflection frame 32 is rotatably mounted on top of the mobile base 31 via a rotating shaft 323, which is located in the middle of the deflection frame 32. A roller hammer 321 is provided at one end of the deflection frame 32. The roller hammer 321 is rotatably connected to the deflection frame, allowing the roller hammer 321 to rotate circumferentially about its own central axis. It should be noted that a tension spring 324 is also provided between the deflection frame 32 and the mobile base 31. The tension spring 324 can force the deflection frame 32 to normally return to its initial state. In this initial state, the rotation path of the roller hammer 321 about the central axis of the rotating shaft 323 can pass through the placement station 11.

[0040] A load-bearing end 322 is provided at one end of the yaw frame 32 away from the roller hammer 321, and an impact mechanism 4 for impacting the load-bearing end 322 is fixed to the surface of the mobile base 31. When the impact mechanism 4 is controlled to move, the impact mechanism 4 applies a force to the load-bearing end 322, and the yaw frame 32 rotates around the central axis of the rotating shaft 323. The lever principle can be used to make the roller hammer 321 hit each column plate, so that each column plate is against the limit seat 2, so that the surface to be processed of each column plate is in the same vertical plane.

[0041] It should be noted here that the surface of the column plate to be processed is the side surface of the column plate away from the limiting seat 2.

[0042] Specific reference Figure 4 The impact mechanism 4 includes a sliding seat 41 and a pushing assembly. A second slide rail 312 is fixed to the surface of the mobile base 31, and the extension direction of the second slide rail 312 is the same as the extension direction of the first slide rail 12; a second slider is fixed to the bottom surface of the sliding seat 41, and the second slider is slidably installed on the second slide rail 312, so that the sliding seat 41 can move on the surface of the mobile base 31.

[0043] Furthermore, a plurality of impact components 411 are provided on the side of the sliding seat 41 near the deflection frame 32. The impact components 411 are configured to partially abut against the load-bearing end 322 of the deflection frame 32. In this embodiment, the specific number of impact components 411 is four, and the four impact components 411 are evenly spaced along the height direction of the sliding seat 41. It is understood that in other feasible embodiments, the number of impact components 411 may also be three, five, or six, and is not limited to the embodiment provided herein.

[0044] Also refer to Figure 3The push assembly includes a cam member 42 and a first motor 43. The cam member 42 is rotatably mounted on the surface of the movable base 31. The first motor 43 is fixedly mounted on the surface of the movable base 31. The output end of the first motor 43 is coaxially fixed to the cam member 42, so that the first motor 43 can drive the cam member 42 to rotate circumferentially when in operation. An abutment post 412 is partially fixed to the side of the sliding base 41 away from the impact member 411, and the abutment post 412 is located outside the cam member 42.

[0045] A return spring 44 is disposed between the sliding seat 41 and the movable base 31. A spring seat 313 is fixed to the surface of the movable base 31. One end of the return spring 44 abuts against the spring seat 313, and the other end abuts against the sliding seat 41. The return spring 44 is located on the side of the sliding seat 41 away from the cam component 42, and can consistently generate an elastic force acting on the sliding seat 41, thereby maintaining the abutment column 412 in contact with the cam component 42. Therefore, when the first motor 43 operates to drive the cam component 42 to rotate, the sliding seat 41, under the action of the cam component 42, can achieve a reciprocating motion effect, thereby causing the impact component 411 to repeatedly impact the load-bearing end 322, and through the principle of leverage, achieve the effect of repeatedly hammering the column plate into alignment.

[0046] Back to Figure 3 A clamp unit 5 is provided above the placement station 11. When each column plate is hammered and pressed against the limit seat 2, the column plate can be pressed and fixed by the clamp unit 5; wherein, the clamp unit 5 is fixed to the elevated seat 51 on the surface of the support assembly 1 and the pressure plate 52 rotatably connected to the elevated seat 51. The number of elevated seats 51 and pressure plates 52 can be multiple groups, which can be selected according to actual needs.

[0047] A threaded rod 53 is also provided on the surface of the support assembly 1, and the threaded rod 53 can be detachably fixed to the support assembly 1 by means of a threaded connection; the pressure plate 52 is provided with a vertical through-hole, and the threaded rod 53 can be inserted into the through-hole, so that the pressure plate 52 is movably sleeved on the threaded rod 53; the threaded rod 53 is threadedly connected with an adjusting nut 54, and the adjusting nut 54 is located above the pressure plate 52. When the surfaces to be processed of each column plate are in the same plane, the adjusting nut 54 is rotated to force the pressure plate 52 to move downward, and the pressure plate 52 can be pressed tightly against the column plate and keep the column plate fixed, so that the milling cutter device 7 can smoothly mill the surface to be processed of the column plate.

[0048] It should be noted here that, in the initial state, the impact component 411 of the sliding seat 41 can be spaced apart from the load-bearing end 322, and the impact component 411 is located outside the moving path of the load-bearing end 322 around the central axis of the rotating shaft 323; when the pressure plate 52 presses and fixes the column plate, the second motor 34 is controlled to operate to drive the moving platform to move away from the guide rail 13, and the roller hammer 321 can be against the surface to be processed of the column plate and swing outward, and finally the roller hammer 321 can smoothly move to the inner side of the surface to be processed of the column plate, so that the subsequent milling cutter device 7 can smoothly mill the surface to be processed of the column plate.

[0049] In addition, back to Figure 2 A protective cover 6 is fixed on the surface of the mobile base 31, and the protective cover 6 can cover the entire knocking unit 3 to reduce the situation where the operator's hands are pinched and reduce safety hazards; a structural groove 61 is partially provided on the protective cover 6, and one side end of the roller hammer 321 provided on the yaw frame 32 can pass through the structural groove 61 and be exposed on the protective cover 6, so that the hammer roller can smoothly strike the surface to be processed of the column plate to align it.

[0050] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present 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. An end milling fixture, characterized in that: The support assembly (1) comprises a support assembly (1), wherein the support assembly (1) is provided with a placement station (11), a limit seat (2) for a column plate to abut against and limit is provided on the outside of the placement station (11), and a clamp unit (5) for pressing and fixing the column plate is provided above the placement station (11); A striking unit (3) is provided outside the placement station (11), and the striking unit (3) includes a movable base (31) slidably mounted on the support assembly (1), a deflection frame (32) rotatably mounted on the movable base (31), and a driving mechanism for driving the movable base (31) to move; a roller hammer (321) is provided at one side end of the deflection frame (32), and in an initial state, a rotation path of the roller hammer (321) around the rotation center of the deflection frame (32) passes through the placement station (11); One side end of the deflection frame (32) away from the roller hammer (321) is set as a load-bearing end (322), and the mobile base (31) is fixed with an impact mechanism (4) for impacting the load-bearing end (322); when the impact mechanism (4) is in an initial state, the impact mechanism (4) is located outside the movement path of the load-bearing end (322) around the rotation center of the deflection frame (32).

2. The end milling fixture according to claim 1, characterized in that: The impact mechanism (4) comprises a sliding seat (41) slidably mounted on a movable base (31) and a push assembly for driving the sliding seat (41) to move. The sliding seat (41) is provided with a plurality of impact components (411) on a side close to the deflection frame (32). The impact components (411) are used to partially abut against the load-bearing end (322).

3. The end milling fixture according to claim 2, characterized in that: The push assembly includes a cam component (42) rotatably mounted on a movable base (31) and a first motor (43) for driving the cam component (42) to rotate; an abutment column (412) is partially fixed to the sliding seat (41), and a return spring (44) is provided between the sliding seat (41) and the movable base (31), and the return spring (44) is used to force the abutment column (412) to normally abut against the cam component (42).

4. The face milling fixture according to any one of claims 1 to 3, characterized in that: The movable base (31) is fixed with a protective cover (6) for covering the striking unit (3), the protective cover (6) being provided with a structural groove (61), and the deflection frame (32) is provided with a roller hammer (321) whose one side end passes through the structural groove (61) and is exposed outside the protective cover (6).

5. The end milling fixture according to claim 1, characterized in that: The roller hammer (321) is rotatably mounted on the deflection frame (32).

6. The end milling fixture according to claim 1, characterized in that: The driving mechanism comprises a screw rod (33) rotatably mounted on the surface of a movable base (31) and a second motor (34) for driving the screw rod (33) to rotate. A transmission seat (311) is partially provided on the movable base (31), and the screw rod (33) is passed through the transmission seat (311) and is threadedly connected to the transmission seat (311).

7. The end milling fixture according to claim 1, characterized in that: The clamp unit (5) includes an elevated seat (51) fixed to the surface of the support assembly (1) and a pressure plate (52) rotatably connected to the elevated seat (51); a threaded rod (53) is detachably fixed to the surface of the support assembly (1), and the pressure plate (52) is provided with a vertical through-hole, and the pressure plate (52) is movably sleeved on the threaded rod (53) through the through-hole; the threaded rod (53) is threadedly connected to an adjusting nut (54) for forcing the pressure plate (52) to be pressed and fixed to the column plate.

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