Workpiece fixing device for double-sided milling machine

Abstract

The utility model relates to the technical field of milling machine machining, and discloses a workpiece fixing device for a double-sided milling machine, which comprises a rack and milling cutters arranged on two sides of the rack, a machining table located between the milling cutters on two sides is slidably arranged on the rack, a placing table is rotatably connected to the machining table, and a workpiece is placed on the placing table. The machining table is rotationally connected with a first lead screw which is horizontally arranged and located below the containing table, the two ends of the first lead screw are provided with opposite threads and are in threaded connection with clamping plates located on the two sides of the containing table, and a driving device for driving the first lead screw to rotate is installed on the machining table. And a rotating plate and a transposition mechanism for driving the rotating plate to rotate and lift are mounted on one side of the rack. The utility model has the following advantages and effects: workpieces can be conveniently fixed, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machine processing, in particular to a workpiece fixing device for a double-sided milling machine. Background Art

[0002] A milling machine is a machine tool with a wide range of uses. On a milling machine, planes (horizontal planes, vertical planes), grooves (key grooves, T-shaped grooves, dovetail grooves, etc.), tooth-dividing parts (gears, spline shafts, sprockets), helical surfaces (threads, helical grooves), and various curved surfaces can be processed. In addition, it can also be used for machining the surfaces of rotating bodies, internal holes, and cutting work, etc. A double-sided milling machine is a milling machine that can process workpieces simultaneously, and its working principle is the same as that of a traditional milling machine.

[0003] Chinese Patent with the authorization announcement number CN220161841U discloses a workpiece fixing device for a double-sided milling machine, which relates to an auxiliary tool for milling machine processing. It includes a base. A fixing member is provided on the upper part of the base. A moving component is provided in the middle of the lower part of the base. Slide bars are provided on both sides of the moving component. A limiting bar is provided at the bottom end of the slide bar. The slide bar is arranged at the lower part of the base. The above device has the following deficiencies: placing the workpiece on the fixing rod and using a tool to rotate the fixing bolt to lock the workpiece, and then processing it still requires manual fixing, which is rather inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide a workpiece fixing device for a double-sided milling machine, which has the effects of facilitating workpiece fixing and improving processing efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A workpiece fixing device for a double-sided milling machine includes a machine frame and milling cutters installed on both sides of the machine frame. A processing table slides on the machine frame and is located between the two milling cutters on both sides. A placing table is rotatably connected to the processing table. A first lead screw horizontally arranged and located below the placing table is rotatably connected to the processing table. Both ends of the first lead screw are provided with opposite threads and are threadedly connected to clamping plates located on both sides of the placing table. A driving device for driving the first lead screw to rotate is installed on the processing table. A rotating plate and a position-changing mechanism for driving the rotating plate to rotate and lift are installed on one side of the machine frame.

[0006] By adopting the above technical solution, the workpiece is placed on the placement table, and the driving device drives the first lead screw to rotate, thereby driving the clamping plates threadedly connected to both sides thereof to move relatively, automatically clamping both sides of the workpiece, so as to position and fix the workpiece, facilitating the milling cutters on both sides of the frame to process the workpiece and improving the processing efficiency; after both sides of the workpiece are processed, the first lead screw rotates in the reverse direction to drive the clamping plates on both sides to loosen the workpiece, and the transposition mechanism drives the rotating plate to descend and abut against the upper end of the workpiece. The transposition mechanism drives the rotating plate to rotate, thereby driving the workpiece and the placement table to rotate so that the other two sides of the workpiece face the milling cutters on both sides of the frame. Then, the clamping plates clamp both sides of the workpiece, realizing multi-directional processing of the workpiece to be processed and improving the flexibility and applicability of the processing device.

[0007] A further setting of the present utility model is that: a horizontal guide rod parallel to the first lead screw is fixed on the processing table, and the side of the clamping plate away from the first lead screw is inserted and slidably connected to the horizontal guide rod.

[0008] By adopting the above technical solution, when the first lead screw rotates to drive the clamping plates on both sides to move relatively, the horizontal guide rod realizes limiting and guiding, making the clamping process of the clamping plates more stable.

[0009] A further setting of the present utility model is that: the frame is provided with a groove located below the processing table, and a second lead screw is rotatably connected in the groove, and the bottom of the processing table is threadedly connected to the second lead screw.

[0010] By adopting the above technical solution, after the workpiece is fixed on the processing table, the second lead screw is rotated to drive the processing table to move horizontally relative to the frame. The horizontal movement of the processing table drives the workpiece to move to a suitable position between the two milling cutters, and the milling cutters process the workpiece.

[0011] A further setting of the present utility model is that: the driving device is set as a first motor, and the frame is provided with a second motor for driving the second lead screw to rotate.

[0012] By adopting the above technical solution, the first motor drives the first lead screw to rotate, thereby driving the clamping plates on both sides to move relatively to automatically clamp both sides of the workpiece, and the second motor drives the second lead screw to rotate, thereby driving the processing table and the workpiece to move to a suitable position between the two milling cutters.

[0013] A further setting of the present utility model is that: the placement table is set as a frustum of a cone.

[0014] By adopting the above technical solution, when the rotating plate is pressed down to drive the workpiece to rotate while being located above the workpiece, the frustum of a cone is beneficial for the workpiece to rotate with the rotating plate and support the workpiece at the same time.

[0015] The further setting of the present utility model is as follows: The transposition mechanism includes a mounting bracket fixed to the frame, a frustum fixed to the mounting bracket, a first pulley rotatably connected to the frustum, a driving mechanism for driving the first pulley to rotate, and a through hole penetrating the middle of the frustum and the mounting bracket. A lifting cylinder is fixed on the mounting bracket. The output end of the lifting cylinder passes through the through hole and is rotatably connected to the rotating plate. The first pulley and the rotating plate are connected by a telescopic rod.

[0016] By adopting the above technical solution, after the two sides of the workpiece are processed, the first lead screw rotates in the reverse direction to drive the clamping plates on both sides to release the workpiece. The output end of the lifting cylinder extends to drive the rotating plate to descend until the rotating plate presses down above the workpiece. At this time, the telescopic rod extends, and then the driving mechanism drives the first pulley to rotate. The first pulley drives the rotating plate, the workpiece, and the placement table to rotate synchronously through the telescopic rod to rotate and transpose the workpiece, so that the unprocessed sides of the workpiece face the milling cutters on both sides of the frame. The clamping plates clamp both sides of the workpiece, and the milling cutters process the workpiece, realizing multi-directional processing of the workpiece to be processed.

[0017] The further setting of the present utility model is as follows: The driving mechanism includes a third motor installed on the mounting bracket, a second pulley fixed to the output end of the third motor, and a transmission belt drivingly connected between the first pulley and the second pulley.

[0018] By adopting the above technical solution, the third motor rotates to drive the second pulley to rotate, and the second pulley drives the first pulley to rotate synchronously through the transmission belt.

[0019] The further setting of the present utility model is as follows: A fixing bracket is fixed in the middle of the frustum. The fixing bracket is provided with a rectangular notch. The output end of the lifting cylinder is fixed with a connecting rod that is slidably connected to the rectangular notch and adapted to the rectangular notch. The rotating plate is rotatably connected to the bottom end of the connecting rod.

[0020] By adopting the above technical solution, when the output end of the lifting cylinder extends, it drives the connecting rod to slide and penetrate in the rectangular notch on the fixing bracket, thereby driving the rotating plate at the end of the connecting rod to descend and press down above the workpiece. The fixing bracket supports and restricts the connecting rod, making the pressing process more stable.

[0021] The further setting of the present utility model is as follows: The telescopic rod is provided with two located on both sides of the connecting rod. The telescopic rod includes a fixed rod with the upper end fixed to the first pulley and a sliding rod with the bottom end fixed to the rotating plate and inserted and slidable in the fixed rod.

[0022] By adopting the above technical solution, when the output end of the lifting cylinder extends to drive the rotating plate to descend until the rotating plate presses down above the workpiece, the rotating plate drives the sliding rod to slide downward relative to the fixed rod, so that the telescopic rod extends as a whole, maintaining the connection between the rotating plate and the first pulley. When the first pulley rotates, the rotating plate is driven to rotate synchronously through the telescopic rod.

[0023] A further setting of the present utility model is that an anti-wear gasket is fixed on the clamping plate.

[0024] By adopting the above technical solution, the clamping wear of the clamping plate on the workpiece is reduced.

[0025] The beneficial effects of the present utility model are as follows:

[0026] 1. Place the workpiece on the placement table, and the driving device drives the first lead screw to rotate, thereby driving the clamping plates threadedly connected to both sides to move relatively to automatically clamp both sides of the workpiece, so as to position and fix the workpiece, facilitating the milling cutters on both sides of the machine frame to process the workpiece and improving the processing efficiency;

[0027] 2. After the two sides of the workpiece are processed, the first lead screw rotates in the reverse direction to drive the clamping plates on both sides to release the workpiece. The transposition mechanism drives the rotating plate to descend and abut against the upper end of the workpiece. The transposition mechanism drives the rotating plate to rotate, thereby driving the workpiece and the placement table to rotate so that the other two sides of the workpiece face the milling cutters on both sides of the machine frame. Then the clamping plates clamp both sides of the workpiece, realizing multi-directional processing of the workpiece to be processed and improving the flexibility and applicability of the processing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the present utility model.

[0030] Figure 2 It is a schematic diagram of the connection relationship between the rotating plate and the transposition mechanism in the present utility model.

[0031] In the figure, 1 is a frame; 2 is a milling cutter; 3 is a processing table; 4 is a placement table; 5 is a first lead screw; 6 is a clamping plate; 7 is a rotating plate; 8 is a transposition mechanism; 81 is a mounting bracket; 82 is a round table; 83 is a first pulley; 84 is a driving mechanism; 841 is a third motor; 842 is a second pulley; 843 is a transmission belt; 85 is a through hole; 86 is a lifting cylinder; 87 is a telescopic rod; 871 is a fixed rod; 872 is a sliding rod; 88 is a fixed bracket; 89 is a connecting rod; 9 is a horizontal guide rod; 10 is a groove; 11 is a second lead screw; 12 is a first motor; 13 is a second motor. Specific embodiments

[0032] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Embodiment 1, a workpiece fixing device for a double-sided milling machine, as Figure 1-2 shown, includes a frame 1 and milling cutters 2 installed on both sides of the frame 1. A processing table 3 slides on the frame 1 between the milling cutters 2 on both sides. A placement table 4 is rotatably connected to the processing table 3. A first lead screw 5 horizontally arranged below the placement table 4 is rotatably connected to the processing table 3. Both ends of the first lead screw 5 are provided with opposite threads and are threadedly connected to clamping plates 6 on both sides of the placement table 4. A driving device for driving the first lead screw 5 to rotate is installed on the processing table 3. A rotating plate 7 and a transposition mechanism 8 for driving the rotating plate 7 to rotate and lift are installed on one side of the frame 1.

[0034] Further, a horizontal guide rod 9 parallel to the first lead screw 5 is fixed on the processing table 3. The side of the clamping plate 6 away from the first lead screw 5 is inserted and slidably connected to the horizontal guide rod 9.

[0035] Further, the frame 1 is provided with a groove 10 below the processing table 3. A second lead screw 11 is rotatably connected in the groove 10. The bottom of the processing table 3 is threadedly connected to the second lead screw 11.

[0036] Further, the driving device is set as a first motor 12. A second motor 13 for driving the second lead screw 11 to rotate is installed on the frame 1.

[0037] Further, the placement table 4 is set as a round table 82.

[0038] Furthermore, the transposition mechanism 8 includes a mounting bracket 81 fixed to the frame 1, a frustum 82 fixed to the mounting bracket 81, a first pulley 83 rotatably connected to the frustum 82, a driving mechanism 84 for driving the first pulley 83 to rotate, and a through hole 85 passing through the middle of the frustum 82 and the mounting bracket 81. A lifting cylinder 86 is fixed to the mounting bracket 81. The output end of the lifting cylinder 86 passes through the through hole 85 and is rotatably connected to the rotating plate 7. The first pulley 83 and the rotating plate 7 are connected by a telescopic rod 87.

[0039] Furthermore, the driving mechanism 84 includes a third motor 841 mounted on the mounting bracket 81, a second pulley 842 fixed to the output end of the third motor 841, and a transmission belt 843 drivingly connected between the first pulley 83 and the second pulley 842.

[0040] Furthermore, a fixing bracket 88 is fixed to the middle of the frustum 82. The fixing bracket 88 is provided with a rectangular notch. The output end of the lifting cylinder 86 is fixed with a connecting rod 89 that is slidably connected to the rectangular notch and adapted to the rectangular notch. The rotating plate 7 is rotatably connected to the bottom end of the connecting rod 89.

[0041] Furthermore, the telescopic rods 87 are provided with two located on both sides of the connecting rod 89. The telescopic rod 87 includes a fixed rod 871 with an upper end fixed to the first pulley 83 and a sliding rod 872 with a bottom end fixed to the rotating plate 7 and inserted and slidable in the fixed rod 871.

[0042] Furthermore, an anti-wear gasket is fixed to the clamping plate 6.

[0043] Working principle of the utility model: Place the workpiece on the placement table 4. The first motor 12 drives the first lead screw 5 to rotate, thereby driving the clamping plates 6 threadedly connected to both sides to move relatively, automatically clamping both sides of the workpiece, so as to position and fix the workpiece. After fixing the workpiece on the processing table 3, the second motor 13 drives the second lead screw 11 to rotate, thereby driving the processing table 3 to move horizontally relative to the machine frame 1. The horizontal movement of the processing table 3 drives the workpiece to move to a suitable position between the two milling cutters 2, and the milling cutters 2 process the workpiece; after the two sides of the workpiece are processed, the first lead screw 5 rotates in the reverse direction to drive the clamping plates 6 on both sides to release the workpiece. The output end of the lifting cylinder 86 extends, driving the connecting rod 89 to slide and penetrate in the rectangular notch of the fixed frame 88, thereby driving the rotating plate 7 at the end of the connecting rod 89 to descend and press on the upper part of the workpiece. During this period, the rotating plate 7 drives the sliding rod 872 to slide and move downward relative to the fixed rod 871, causing the telescopic rod 87 to extend as a whole, maintaining the connection between the rotating plate 7 and the first belt pulley 83. Then, the third motor 841 rotates to drive the second belt pulley 842 to rotate. The second belt pulley 842 drives the first belt pulley 83 to rotate synchronously through the transmission belt 843. The first belt pulley 83 drives the rotating plate 7, the workpiece, and the placement table 4 to rotate synchronously, enabling the workpiece to rotate and change its position, so that the unprocessed sides of the workpiece face the milling cutters 2 on both sides of the machine frame 1. The clamping plates 6 clamp both sides of the workpiece, and the milling cutters 2 process the workpiece, realizing multi-directional processing of the workpiece to be processed.

[0044] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A workpiece fixing device for a double-sided milling machine, comprising a frame (1) and a milling tool (2) mounted on both sides of the frame (1), characterized in that: A processing table (3) is slidably disposed on the frame (1) and is located between the milling cutters (2) on both sides; a placement table (4) is rotatably connected to the processing table (3); the processing table (3) is rotatably connected to a first screw rod (5) which is horizontally disposed and located below the placement table (4); both ends of the first screw rod (5) are provided with opposite threads and are threadedly connected to clamping plates (6) located on both sides of the placement table (4); a driving device for driving the first screw rod (5) to rotate is installed on the processing table (3); and a rotating plate (7) and a shifting mechanism (8) for driving the rotating plate (7) to rotate and rise and fall are installed on one side of the frame (1).

2. A workpiece fixing device for a double-sided milling machine according to claim 1, characterized in that: A horizontal guide rod (9) parallel to the first screw rod (5) is fixed on the processing table (3), and the clamping plate (6) is plug-inly and slidably connected to the horizontal guide rod (9) at a side away from the first screw rod (5).

3. A workpiece fixing device for a double-sided milling machine according to claim 1, characterized in that: The frame (1) is provided with a groove (10) located below the processing table (3), a second screw rod (11) is rotatably connected in the groove (10), and the bottom of the processing table (3) is threadedly connected to the second screw rod (11).

4. A workpiece fixing device for a double-sided milling machine according to claim 3, characterized in that: The driving device is configured as a first motor (12), and the frame (1) is provided with a second motor (13) for driving the second screw rod (11) to rotate.

5. A workpiece fixing device for a double-sided milling machine according to claim 1, characterized in that: The placement table (4) is configured as a truncated table (82).

6. A workpiece fixing device for a double-sided milling machine according to claim 1, characterized in that: The shifting mechanism (8) comprises a mounting frame (81) fixed to the frame (1), a truncated table (82) fixed to the mounting frame (81), a first pulley (83) rotatably connected to the truncated table (82), a driving mechanism (84) for driving the first pulley (83) to rotate, and a through hole (85) penetrating the middle of the truncated table (82) and the mounting frame (81); a lifting cylinder (86) is fixed to the mounting frame (81); an output end of the lifting cylinder (86) passes through the through hole (85) and is rotatably connected to the rotating plate (7); and the first pulley (83) and the rotating plate (7) are connected via a telescopic rod (87).

7. A workpiece fixing device for a double-sided milling machine according to claim 6, characterized in that: The driving mechanism (84) comprises a third motor (841) mounted on the mounting frame (81), a second pulley (842) fixed to the output end of the third motor (841), and a transmission belt (843) connected between the first pulley (83) and the second pulley (842).

8. A workpiece fixing device for a double-sided milling machine according to claim 6, characterized in that: A fixing frame (88) is fixed in the middle of the circular table (82), and the fixing frame (88) is provided with a rectangular notch. A connecting rod (89) adapted to the rectangular notch and slidably connected to the rectangular notch is fixed at the output end of the lifting cylinder (86), and the rotating plate (7) is rotatably connected to the bottom end of the connecting rod (89).

9. A workpiece fixing device for a double-sided milling machine according to claim 8, characterized in that: The telescopic rod (87) is arranged as two rods located on both sides of the connecting rod (89), and the telescopic rod (87) comprises a fixed rod (871) whose upper end is fixed to the first pulley (83) and a sliding rod (872) which is inserted and slidably inserted into the fixed rod (871) and whose lower end is fixed to the rotating plate (7).

10. A workpiece fixing device for a double-sided milling machine according to claim 1, characterized in that: An anti-wear pad is fixed on the clamping plate (6).

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