A workpiece clamping platform for milling

Abstract

The present invention discloses a workpiece clamping platform for milling, which relates to the technical field of cam milling. The workpiece clamping platform for milling comprises a workbench arranged on a milling machine body, the top of the workbench is detachably connected with a clamping platform assembly, and the clamping platform assembly is used to clamp the cam. The workpiece clamping platform for milling can automatically blow and clean the top of the circular cover before clamping and fixing, so as to ensure the positioning accuracy of the cam and thus ensure the quality of subsequent milling; it can automatically adjust the long axis direction and the tip direction of the cam to ensure the efficiency and quality of subsequent milling; before milling, it is convenient to automatically clamp and fix the cam, and at the same time, it is convenient to adjust and control the size of the clamping force, so as to ensure the clamping effect while avoiding damage to the cam, and after milling, it is convenient to automatically loosen the cam, so as to ensure the efficiency of milling.

Description

Technical Field

[0001] The invention relates to the technical field of cam milling, in particular to a workpiece clamping platform for milling processing. Background Art

[0002] After the cam is cast, the positioning hole can be processed and placed on the milling machine for rough machining and fine machining. At this time, a workpiece clamping platform is required to clamp and fix it.

[0003] However, when using the existing workpiece clamping platform for milling, it is not convenient to automatically adjust the direction of the long axis and the tip of the cam, which is not convenient and quick enough, affecting the efficiency and quality of the milling process; when clamping and fixing, debris is easily left on the surface of the clamping platform, which is not only inconvenient to clean, but also affects the clamping accuracy, and also affects the efficiency and quality of the milling process; before the milling process, it is not convenient to automatically clamp and fix the cam 12, and after the milling process, it is not convenient to automatically loosen the cam 12, which also affects the efficiency of the milling process. Summary of the invention

[0004] The object of the present invention is to provide a workpiece clamping platform for milling processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a workpiece clamping platform for milling, comprising a worktable arranged on a milling machine body, the top of the worktable being detachably connected with a clamping platform assembly, and the clamping platform assembly is used to clamp a cam;

[0006] The clamping platform assembly includes a mounting plate, and a hollow circular cover is fixedly connected to the top of the mounting plate, a hollow positioning tube is fixedly connected to the top of the circular cover, and a cam is sleeved on the side wall of the positioning tube, a plurality of sliding grooves arranged in an array are opened on the side wall of the positioning tube, and a first pushing block is slidably connected in each sliding groove, the first pushing block includes a first inclined surface, and the movement of the first pushing block is pushed by a first pushing mechanism, a plurality of supporting rods arranged in an array are inserted into the top of the circular cover, and a disc is fixedly connected to the lower end of each supporting rod, a first set of rods is fixedly connected to the bottom of the disc, and the side of the first set of rods The wall sleeve is provided with a first sleeve, the lower end of the first sleeve is fixed to the top of the mounting plate, and the side wall sleeve of each first sleeve is provided with a first spring, the side wall of the positioning tube is provided with a cleaning mechanism for blowing and cleaning the top of the circular cover, and the top of the mounting plate is connected to a first movable plate through a movable module, the side wall of the first movable plate is connected to a second movable plate through a first telescopic mechanism, the side wall of the second movable plate is fixedly connected to two symmetrically arranged first connecting frames, and the side wall of the first connecting frame is connected to two symmetrically arranged first push rods through a second telescopic mechanism, and balls are provided at the opposite ends of the two first push rods.

[0007] Preferably, the first pushing mechanism includes a first connecting block fixedly connected to the side wall of each first pushing block, and a first moving rod is inserted in the positioning tube, the side wall of the first moving rod is fixedly connected to a plurality of second connecting blocks arranged in an array, and the side wall of each first connecting block is rotatably connected to the first rotating rod, the other end of the first rotating rod is rotatably connected to the side wall of the second connecting block, and a second moving rod is inserted into the side wall of the circular cover, one end of the second moving rod is fixedly connected to the third connecting block, and the lower end of the first moving rod is fixedly connected to the fourth connecting block, the side wall of the fourth connecting block is rotatably connected to the second rotating rod, and the other end of the second rotating rod is rotatably connected to the side wall of the third connecting block, and the movement of the second moving rod is driven by the second pushing mechanism.

[0008] Preferably, the second pushing mechanism includes a first moving block slidably connected to the top of the mounting plate, and the side wall of the first moving block is connected to the second moving block through a pressure control mechanism, the side wall of the second moving block is fixedly connected to the second pushing block, and the top of the second pushing block is provided with an inclined groove, the bottom of the second moving rod is fixedly connected to the second pushing rod, and the second pushing rod is inserted in the inclined groove, the top of the mounting plate is fixedly connected to a fixed tube, and a third pushing rod is inserted in the fixed tube, the other end of the third pushing rod is fixed to the side wall of the first moving block, and the top of the fixed tube is fixedly connected to a connecting tube, the connecting tube and the fixed tube are filled with hydraulic oil, and a counterweight block is connected to the connecting tube through a moving mechanism, and a limiting mechanism for limiting the first moving block is provided on the top of the mounting plate.

[0009] Preferably, the pressure control mechanism includes two symmetrically arranged second rods fixedly connected to the side wall of the first moving block, and the side wall of each second rod is sleeved with a second sleeve, the other end of the second sleeve is fixed to the side wall of the second moving block, and the side wall of each second sleeve is sleeved with a second spring, the top of the second moving block is fixedly connected to a scale plate, the top of the first moving block is fixedly connected to an L-shaped block, and the top of the L-shaped block is fixedly inserted with a visual sensor.

[0010] Preferably, the moving mechanism includes a support plate fixedly connected to the side wall of the connecting tube, and the top of the support plate is fixedly connected to two symmetrically arranged third sleeves, a third sleeve is inserted into the third sleeve, and the upper end of the third sleeve is fixedly connected to a third moving block, the bottom of the third moving block is fixedly connected to a first connecting rod, and the lower end of the first connecting rod is fixed to the top of the counterweight block, and the movement of the third moving block is driven by a third pushing mechanism.

[0011] Preferably, the third pushing mechanism includes a first connecting plate fixedly connected to the top of the first movable plate, and the side wall of the first connecting plate is fixedly connected to a third pushing block, the third pushing block includes a second inclined surface, and the side wall of the third pushing block is fixedly connected to a second connecting frame, the other end of the second connecting frame is fixedly connected to a fourth pushing block, and the fourth pushing block includes a third inclined surface.

[0012] Preferably, the limiting mechanism includes a limiting block fixedly connected to the side wall of the first moving block, and a fixed cover on the top of the mounting plate, a sliding block is slidably connected in the fixed cover, and a third spring is fixedly connected between the sliding block and the fixed cover, the side wall of the sliding block is fixedly connected to a plurality of triangular blocks arranged in an array, and the triangular block includes a fourth inclined surface and a limiting surface, the side wall of the sliding block is fixedly connected to the second connecting plate, and the side wall of the second connecting plate is fixedly connected to the fifth pushing block, the side wall of the first moving plate is fixedly connected to an L-shaped pointer, and a scale mark is arranged on the top of the mounting plate, the bottom of the pointer is fixedly connected to the fixed block, and the fixed block includes a fifth inclined surface.

[0013] Preferably, the cleaning mechanism includes a plurality of blowing holes arranged in an array on the side wall of the positioning tube, and the inner side wall of the positioning tube is fixedly connected to an annular cover, the top of the mounting plate is fixedly connected to an air storage cover, and a piston is slidably connected inside the air storage cover, the end of the piston is fixedly connected to a second connecting rod, and the other end of the second connecting rod is fixed to the side wall of the second movable block, the side wall of the air storage cover is fixedly connected to an air intake pipe, and a first one-way valve is arranged in the air intake pipe, the side wall of the air storage cover is fixedly connected to an air supply pipe, the other end of the air supply pipe passes through the circular cover and is fixed to the bottom of the annular cover, and a second one-way valve is arranged in the air supply pipe.

[0014] Preferably, the first telescopic mechanism comprises two symmetrically arranged first T-shaped guide rods fixedly connected to the side walls of the second movable plate, the first movable plate is sleeved on the side walls of the first T-shaped guide rods, and the side walls of each first T-shaped guide rod are sleeved with a fourth spring.

[0015] Preferably, the second telescopic mechanism comprises a second T-shaped guide rod fixedly connected to the end of each first push rod, the first connecting frame is sleeved on the side wall of the second T-shaped guide rod, and the side wall of each second T-shaped guide rod is sleeved with a fifth spring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The workpiece clamping platform for milling processing is provided with a first pushing mechanism and a first telescopic mechanism. When the cam needs to be milled, the cam after inner hole processing is sleeved on the positioning tube. Then, the first moving plate is driven to move by the moving module. At the same time, the second moving plate is driven to move by the first telescopic mechanism, and then the first pushing rod is driven to move by the first connecting frame and the second telescopic mechanism. At the same time, when the first moving plate moves, the third pushing block is driven to move by the first connecting plate. When the second inclined surface is gradually separated from the third moving block, the counterweight block can move downward under the action of gravity, and the third pushing rod is pushed to move by the hydraulic oil, thereby pushing the first moving block to move. When the first moving block moves When the first lever is in motion, the second moving block and the second pushing block are driven to move by the pressure control mechanism, so that the second pushing rod slides along the inclined groove, so that the second moving rod moves in the direction close to the circular cover. When the second moving rod moves, the second rotating rod rotates, and at the same time, the first moving rod is pushed to move upward, and the first rotating rod pushes multiple first pushing blocks to move synchronously outward along the sliding groove, so that the first inclined surface abuts against the top of the inner hole of the cam, thereby pushing the cam to move downward, and at the same time, pushing the supporting rod to move downward, the first spring is compressed, so that the cam abuts against the top of the circular cover, thereby realizing pre-clamping of the cam, and when the first pushing rod abuts against the side wall of the cam, the cam can be pushed to rotate and adjust along the positioning tube, and at the same time, When the ball is in contact with the side wall of the cam, it can slide along the side wall of the cam. At the same time, the fifth spring is compressed, which can ensure that its long axis direction is perpendicular to the first push rod and its tip is facing the side away from the second moving plate, thereby ensuring the efficiency and quality of subsequent milling processing. After the second moving plate is in contact with the side wall of the circular cover, when the first moving plate continues to move, the fourth spring is gradually compressed and can drive the fourth pushing block to continue to move. When the third inclined surface is in contact with the side wall of the third moving block, the counterweight block can be pushed downward by the first connecting rod and the hydraulic oil can be squeezed. At this time, pressurization is performed and the first moving block is pushed to continue to move by the third pushing rod. At the same time, the second spring is compressed, so that the first moving block and the second moving block The distance between them gradually becomes smaller, and the second spring is compressed. At this time, the compression amount of the second spring can be determined by detecting the scale change of the scale plate through the visual sensor, and the elastic force of the second spring can be controlled, and then the extrusion force between the first push block and the cam can be controlled, so as to realize the clamping and fixing of the cam, and ensure the clamping effect while avoiding damage to the cam. At the same time, it can provide a pre-tightening force, so that the clamping and fixing effect is better, thereby ensuring the quality of subsequent milling processing. After the clamping and fixing is completed, the first moving block is limited by the limiting mechanism, and then the first moving plate and the second moving plate are driven to move and reset through the moving module, thereby driving the first push rod and the ball to disengage from the cam and move and reset, and then, the cam can be milled by the milling machine body.

[0018] (2) This type of workpiece clamping platform for milling processing is provided with a limit mechanism, etc., so that when the cam is clamped and fixed, when the first movable plate moves, the fixed block is driven to move synchronously through the pointer, and when the fifth push block is disengaged from the fifth inclined surface, the sliding block and the triangular block can be moved in the direction away from the fixed cover under the action of the third spring, and when the first movable block moves, it drives the limit block to move, and makes the limit block abut against the side wall of the fourth inclined surface, thereby pushing the triangular block and the sliding block to move in the direction close to the fixed cover. At the same time, the third spring is compressed, and when the first movable block stops moving, the sliding block and the triangular block can be moved in the direction away from the fixed cover under the action of the third spring, and makes the limit block abut against the side wall of the limit surface, thereby limiting the first movable block, thereby ensuring that the first push block can always clamp the cam after the first push rod and the ball are disengaged from the cam. When the cam is released, the first moving block is automatically released, and when the second inclined surface abuts against the third moving block, the first connecting plate can be used to drive the sliding block and the triangular block to move in the direction close to the fixed cover and disengage from the limiting block. At this time, the first moving block is no longer limited, and when the second inclined surface abuts against the third moving block, the first connecting rod can be used to drive the counterweight block to move upward. Under the action of the hydraulic pressure, the first moving block can be driven to move and reset through the third pushing rod, and the second moving block and the second pushing block can be driven to reset through the pressure control mechanism, so that the first moving rod is pulled downward to reset through the second moving rod and the second rotating rod, and then the first rotating rod is used to pull multiple first pushing blocks to move and reset in the positioning tube, and the cam is released, so that the cam can be automatically released after the milling process is completed, which is more convenient and quick, and can improve the processing efficiency.

[0019] (3) This type of workpiece clamping platform for milling processing is provided with a cleaning mechanism, etc., so that when the cam is pre-positioned, when the cam gradually moves downward along the positioning tube, the second moving block and the second connecting rod can push the piston to slide into the air storage cover, thereby squeezing the air temporarily stored in the air storage cover. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air temporarily stored in the air storage cover is squeezed and enters the annular cover through the air supply pipe, and is blown on the top of the circular cover through the blowing hole. Therefore, before the cam is clamped and fixed, the top of the circular cover can be automatically blown and cleaned, which is more convenient and quick to use, and the positioning accuracy is guaranteed, thereby ensuring the quality of subsequent milling processing. After the processing is completed, when the first moving block moves and resets, it can drive the second moving block to move and reset, and drive the piston to move away from the air storage cover through the second connecting rod, so that negative pressure is generated in the piston. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, external air can enter the air storage cover through the air intake pipe and be temporarily stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the use state of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the positions of the first telescopic mechanism and the second telescopic mechanism in the present invention;

[0023] Figure 4 It is a partial cross-sectional structural schematic diagram of the circular cover in the present invention;

[0024] Figure 5 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 6 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0027] Figure 8 for Figure 4 Schematic diagram of the enlarged structure at D in the middle;

[0028] Fig. 9 for Figure 7 Schematic diagram of the enlarged structure at E in the middle;

[0029] Fig.10 for Figure 7 The enlarged structural diagram at F in the middle;

[0030] Fig.11 for Figure 8 Schematic diagram of the enlarged structure at G in the middle;

[0031] Fig.12 for Fig.11 Schematic diagram of the enlarged structure at H in the middle;

[0032] Fig.13 for Fig.10 Schematic diagram of the enlarged structure at I in the middle.

[0033] In the figure: 1, milling machine body; 101, worktable; 2, first push mechanism; 201, first moving rod; 202, first connecting block; 203, first rotating rod; 204, second connecting block; 205, fourth connecting block; 206, second moving rod; 207, third connecting block; 208, second rotating rod; 3, second push mechanism; 301, first moving block; 302, second moving block; 303, second push block; 304, inclined slot; 305, second push rod; 306, fixed pipe; 307, third push rod; 308, connecting pipe; 309, counterweight; 4, moving Mechanism; 401, support plate; 402, third sleeve; 403, third set of rods; 404, third moving block; 405, first connecting rod; 5, third pushing mechanism; 501, first connecting plate; 502, third pushing block; 503, second inclined plane; 504, second connecting frame; 505, fourth pushing block; 506, third inclined plane; 6, pressure control mechanism; 601, second sleeve; 602, second set of rods; 603, second spring; 604, scale plate; 605, L-shaped block; 606, visual sensor; 7, limit mechanism; 701, limit block; 702, fixed cover; 7 03, sliding block; 704, third spring; 705, triangular block; 706, fourth inclined plane; 707, limiting surface; 708, second connecting plate; 709, fifth push block; 710, fixed block; 711, fifth inclined plane; 8, cleaning mechanism; 801, blowing hole; 802, annular cover; 803, air storage cover; 804, air inlet pipe; 805, air supply pipe; 806, piston; 807, second connecting rod; 9, first telescopic mechanism; 901, first T-shaped guide rod; 902, fourth spring; 10, second telescopic mechanism; 1001, second T-shaped guide rod; 1002, fifth spring Spring; 11, clamping platform assembly; 1101, mounting plate; 1102, circular cover; 1103, positioning tube; 1104, sliding groove; 1105, first push block; 1106, first inclined plane; 1107, moving module; 1108, first moving plate; 1109, second moving plate; 1110, first connecting frame; 1111, first push rod; 1112, ball bearing; 1113, pointer; 1114, scale mark; 1115, support rod; 1116, disc; 1117, first set of rods; 1118, first sleeve; 1119, first spring; 12, cam. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 13 The present invention provides a technical solution: a workpiece clamping platform for milling, comprising a workbench 101 arranged on a milling machine body 1, a clamping platform assembly 11 is detachably connected to the top of the workbench 101, and the clamping platform assembly 11 is used to clamp a cam 12;

[0036] The clamping platform assembly 11 includes a mounting plate 1101, and a hollow circular cover 1102 is fixedly connected to the top of the mounting plate 1101, a hollow positioning tube 1103 is fixedly connected to the top of the circular cover 1102, and the cam 12 is sleeved on the side wall of the positioning tube 1103, and the side wall of the positioning tube 1103 is provided with a plurality of sliding grooves 1104 arranged in an array, and each sliding groove 1104 is slidably connected with a first pushing block 1105, the first pushing block 1105 includes a first inclined surface 1106, and the movement of the first pushing block 1105 is controlled by the first inclined surface 1106. A pushing mechanism 2 is used to push, a plurality of support rods 1115 arranged in an array are inserted on the top of the circular cover 1102, and a disc 1116 is fixedly connected to the lower end of each support rod 1115, a first sleeve rod 1117 is fixedly connected to the bottom of the disc 1116, and a first sleeve tube 1118 is sleeved on the side wall of the first sleeve rod 1117, the lower end of the first sleeve tube 1118 is fixed to the top of the mounting plate 1101, and a first spring 1119 is sleeved on the side wall of each first sleeve tube 1118, and a side wall of the positioning tube 1103 is provided with a spring 1119 for positioning the circular cover 1102. 2, and the top of the mounting plate 1101 is connected to a first moving plate 1108 through a moving module 1107, and the side wall of the first moving plate 1108 is connected to a second moving plate 1109 through a first telescopic mechanism 9, and the side wall of the second moving plate 1109 is fixedly connected to two symmetrically arranged first connecting frames 1110, and the side wall of the first connecting frame 1110 is connected to two symmetrically arranged first pushing rods 1111 through a second telescopic mechanism 10, and the opposite ends of the two first pushing rods 1111 are both provided with balls 11 12. Before clamping and fixing, the top of the circular cover 1102 can be automatically blown and cleaned to ensure the positioning accuracy of the cam 12, thereby ensuring the quality of subsequent milling processing; the long axis direction and the tip direction of the cam 12 can be automatically adjusted to ensure the efficiency and quality of subsequent milling processing; before milling processing, it is convenient to automatically clamp and fix the cam 12, and at the same time, it is convenient to adjust and control the size of the clamping force to ensure the clamping effect while avoiding damage to the cam 12. After milling processing, it is convenient to automatically loosen the cam 12 to ensure the efficiency of milling processing.

[0037] The first pushing mechanism 2 includes a first connecting block 202 fixedly connected to the side wall of each first pushing block 1105, and a first moving rod 201 is inserted in the positioning tube 1103, and the side wall of the first moving rod 201 is fixedly connected to a plurality of second connecting blocks 204 arranged in an array, and the side wall of each first connecting block 202 is rotatably connected to a first rotating rod 203, and the other end of the first rotating rod 203 is rotatably connected to the side wall of the second connecting block 204, and the side wall of the circular cover 1102 is inserted with a second moving rod 2 06, one end of the second moving rod 206 is fixedly connected to the third connecting block 207, and the lower end of the first moving rod 201 is fixedly connected to the fourth connecting block 205, the side wall of the fourth connecting block 205 is rotatably connected to the second rotating rod 208, and the other end of the second rotating rod 208 is rotatably connected to the side wall of the third connecting block 207, and the movement of the second moving rod 206 is driven by the second driving mechanism 3. When the cam 12 needs to be milled, the cam 12 with the inner hole processed is sleeved on the positioning tube 1103, then, the first movable plate 1108 is moved by the moving module 1107, and at the same time, the second movable plate 1109 is moved by the first telescopic mechanism 9, and then the first pushing rod 1111 is moved by the first connecting frame 1110 and the second telescopic mechanism 10. At the same time, when the first movable plate 1108 moves, the second moving rod 206 is pushed to move in the direction close to the circular cover 1102 by the second pushing mechanism 3. When the second moving rod 206 moves, the second rotating rod 208 is rotated, and at the same time, the first moving rod 201 is pushed to move upward, and the first rotating rod 203 is used to push multiple first pushing blocks 1105 to move synchronously outward along the sliding groove 1104, so that the first inclined surface 1106 is against the top of the inner hole of the cam 12, so that the cam 12 can be pushed downward, and at the same time, the support rod 1115 is pushed downward, and the first spring 1119 is compressed, so that the cam 12 is against the top of the circular cover 1102, thereby realizing pre-clamping of the cam 12.

[0038] The second pushing mechanism 3 includes a first moving block 301 slidably connected to the top of the mounting plate 1101, and the side wall of the first moving block 301 is connected to the second moving block 302 through the pressure control mechanism 6, the side wall of the second moving block 302 is fixedly connected to the second pushing block 303, and the top of the second pushing block 303 is provided with an inclined groove 304, the bottom of the second moving rod 206 is fixedly connected to the second pushing rod 305, and the second pushing rod 305 is inserted in the inclined groove 304, the top of the mounting plate 1101 is fixedly connected to the fixed tube 306, and the fixed tube 306 is inserted with a third pushing rod 307, the other end of the third pushing rod 307 is fixed to the side wall of the first moving block 301, and the top of the fixed tube 306 is fixedly connected to the second pushing rod 305, and the second pushing rod 305 is inserted in the inclined groove 304, It is connected to a connecting pipe 308, and the connecting pipe 308 and the fixed pipe 306 are filled with hydraulic oil. A counterweight block 309 is connected to the connecting pipe 308 through a moving mechanism 4. A limiting mechanism 7 for limiting the first moving block 301 is provided on the top of the mounting plate 1101. The counterweight block 309 can move downward under the action of gravity, and the third push rod 307 is pushed by the hydraulic oil to move, thereby pushing the first moving block 301 to move. When the first moving block 301 moves, the second moving block 302 and the second push block 303 are driven to move by the pressure control mechanism 6, so that the second push rod 305 slides along the inclined groove 304, so that the second moving rod 206 moves toward the direction close to the circular cover 1102.

[0039] The pressure control mechanism 6 includes two symmetrically arranged second rods 602 fixedly connected to the side wall of the first moving block 301, and the side wall of each second rod 602 is sleeved with a second sleeve 601, the other end of the second sleeve 601 is fixed to the side wall of the second moving block 302, and the side wall of each second sleeve 601 is sleeved with a second spring 603, the top of the second moving block 302 is fixedly connected with a scale plate 604, the top of the first moving block 301 is fixedly connected with an L-shaped block 605, and the top of the L-shaped block 605 is fixedly inserted with a visual sensor 606, after the second moving plate 1109 is against the side wall of the circular cover 1102, when the first moving plate 1108 continues to move, the counterweight block 30 is pushed by the moving mechanism 4 9 moves downward and can squeeze the hydraulic oil. At this time, pressurization is performed, and the first moving block 301 is pushed to continue moving by the third pushing rod 307. At the same time, the second spring 603 is compressed, so that the distance between the first moving block 301 and the second moving block 302 gradually becomes smaller, and the second spring 603 is compressed. At this time, the compression amount of the second spring 603 can be determined by detecting the scale change of the scale plate 604 through the visual sensor 606, and the elastic force of the second spring 603 can be controlled, and then the squeezing force between the first pushing block 1105 and the cam 12 can be controlled to achieve clamping and fixing of the cam 12, while ensuring the clamping effect, avoiding damage to the cam 12, and at the same time, it can provide pre-tightening force, so that the clamping and fixing effect is better.

[0040] The moving mechanism 4 includes a support plate 401 fixedly connected to the side wall of the connecting tube 308, and two symmetrically arranged third sleeves 402 are fixedly connected to the top of the support plate 401, a third sleeve rod 403 is inserted in the third sleeve 402, and the upper end of the third sleeve rod 403 is fixedly connected to a third moving block 404, the bottom of the third moving block 404 is fixedly connected to a first connecting rod 405, and the lower end of the first connecting rod 405 is fixed to the top of the counterweight block 309, the movement of the third moving block 404 is pushed by the third pushing mechanism 5, the third moving block 404 is pushed downward by the third pushing mechanism 5, and the counterweight block 309 is pushed downward by the first connecting rod 405.

[0041] The third pushing mechanism 5 includes a first connecting plate 501 fixedly connected to the top of the first movable plate 1108, and the side wall of the first connecting plate 501 is fixedly connected to a third pushing block 502, the third pushing block 502 includes a second inclined surface 503, and the side wall of the third pushing block 502 is fixedly connected to a second connecting frame 504, the other end of the second connecting frame 504 is fixedly connected to a fourth pushing block 505, and the fourth pushing block 505 includes a third inclined surface 506. When the first movable plate 1108 continues to move, it can drive the fourth pushing block 505 to continue to move. When the third inclined surface 506 abuts against the side wall of the third movable block 404, the counterweight block 309 can be pushed downward through the first connecting rod 405.

[0042] The limiting mechanism 7 includes a limiting block 701 fixedly connected to the side wall of the first moving block 301, and a fixed cover 702 on the top of the mounting plate 1101, a sliding block 703 is slidably connected in the fixed cover 702, and a third spring 704 is fixedly connected between the sliding block 703 and the fixed cover 702, a plurality of triangular blocks 705 arranged in an array are fixedly connected to the side wall of the sliding block 703, and the triangular block 705 includes a fourth inclined surface 706 and a limiting surface 707, a second connecting plate 708 is fixedly connected to the side wall of the sliding block 703, and a fifth pushing block 709 is fixedly connected to the side wall of the second connecting plate 708, an L-shaped pointer 1113 is fixedly connected to the side wall of the first moving plate 1108, and a third spring 704 is fixedly connected between the sliding block 703 and the fixed cover 702, There is a scale mark 1114, and the bottom of the pointer 1113 is fixedly connected with a fixed block 710, and the fixed block 710 includes a fifth inclined surface 711. When the cam 12 is clamped and fixed, when the first movable plate 1108 moves, the fixed block 710 is driven to move synchronously through the pointer 1113. When the fifth pushing block 709 is disengaged from the fifth inclined surface 711, the sliding block 703 and the triangular block 705 can move in the direction away from the fixed cover 702 under the action of the third spring 704, and when the first movable block 301 moves, the limit block 701 is driven to move, and the limit block 701 is abutted against the side wall of the fourth inclined surface 706, so that the triangular block 705 and the sliding block 703 can be pushed to the direction close to the fixed cover 702. When the first moving block 301 stops moving, the sliding block 703 and the triangular block 705 can move in the direction away from the fixed cover 702 under the action of the third spring 704, and make the limiting block 701 abut against the side wall of the limiting surface 707, so as to limit the first moving block 301, so as to ensure that the first pushing block 1105 can always clamp and fix the cam 12 after the first pushing rod 1111 and the ball 1112 are separated from the cam 12, which is more stable and reliable. After the milling process is completed, the first moving plate 1108 is moved and reset through the moving module 1107, and when the fifth inclined surface 711 abuts against the fifth pushing block 709, the sliding block 703 can be driven by the second connecting plate 708 The moving block 703 and the triangular block 705 move toward the direction close to the fixed cover 702 and disengage from the limiting block 701. At this time, the first moving block 301 is no longer limited, and when the second inclined surface 503 abuts against the third moving block 404, the counterweight block 309 can be driven to move upward through the first connecting rod 405. Under the action of hydraulic pressure, the first moving block 301 can be driven to move and reset through the third pushing rod 307, and the second moving block 302 and the second pushing block 303 can be driven to reset through the pressure control mechanism 6, so that the first moving rod 206 and the second rotating rod 208 pull the first moving rod 201 to move downward and reset, and then the first rotating rod 203 pulls multiple first pushing blocks 1105 to move and reset in the positioning tube 1103.The cam 12 is loosened, so that the cam 12 can be automatically loosened after the milling process is completed, which is more convenient and quick and can improve the processing efficiency.

[0043] The cleaning mechanism 8 includes a plurality of air blowing holes 801 arranged in an array on the side wall of the positioning tube 1103, and the inner side wall of the positioning tube 1103 is fixedly connected with an annular cover 802, the top of the mounting plate 1101 is fixedly connected with an air storage cover 803, and a piston 806 is slidably connected in the air storage cover 803, the end of the piston 806 is fixedly connected with a second connecting rod 807, and the other end of the second connecting rod 807 is fixed to the side wall of the second moving block 302, and the side wall of the air storage cover 803 is fixedly connected with an air inlet pipe 803. 04, and a first one-way valve is arranged in the air inlet pipe 804, and the conducting direction of the first one-way valve is from the outside to the air storage cover 803, and the side wall of the air storage cover 803 is fixedly connected with an air supply pipe 805, and the other end of the air supply pipe 805 passes through the circular cover 1102 and is fixed to the bottom of the annular cover 802, and a second one-way valve is arranged in the air supply pipe 805, and the conducting direction of the second one-way valve is from the air storage cover 803 to the annular cover 802. When the cam 12 is pre-positioned, when the cam 12 gradually moves along the positioning tube 1103, When moving downward, the second moving block 302 and the second connecting rod 807 can push the piston 806 to slide into the air storage cover 803, so that the air temporarily stored in the air storage cover 803 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air temporarily stored in the air storage cover 803 is squeezed and enters the annular cover 802 through the air supply pipe 805, and is blown onto the top of the circular cover 1102 through the blowing hole 801, so that before the cam 12 is clamped and fixed, the top of the circular cover 1102 can be Automatic air blowing cleaning is more convenient and quick to use, and ensures the accuracy of positioning, thereby ensuring the quality of subsequent milling processing. After the processing is completed, when the first moving block 301 moves and resets, it can drive the second moving block 302 to move and reset, and drive the piston 806 to move away from the air storage cover 803 through the second connecting rod 807, so that negative pressure is generated in the piston 806. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, external air can enter the air storage cover 803 through the air inlet pipe 804 for temporary storage.

[0044] The first telescopic mechanism 9 includes two symmetrically arranged first T-shaped guide rods 901 fixedly connected to the side wall of the second movable plate 1109, the first movable plate 1108 is sleeved on the side wall of the first T-shaped guide rod 901, and the side wall of each first T-shaped guide rod 901 is sleeved with a fourth spring 902. When the cam 12 is pre-positioned, when the cam 12 gradually moves downward along the positioning tube 1103, the second movable block 302 and the second connecting rod 807 can push the piston 806 to slide into the air storage cover 803, so that the air temporarily stored in the air storage cover 803 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air temporarily stored in the air storage cover 803 is squeezed and then flows out through the air supply pipe 8 05 enters the annular cover 802 and blows on the top of the circular cover 1102 through the blowing hole 801, so that before the cam 12 is clamped and fixed, the top of the circular cover 1102 can be automatically blown and cleaned, which is more convenient and quick to use, and ensures the accuracy of positioning, thereby ensuring the quality of subsequent milling processing. After the processing is completed, when the first moving block 301 moves and resets, it can drive the second moving block 302 to move and reset, and drive the piston 806 to move away from the air storage cover 803 through the second connecting rod 807, so that negative pressure is generated in the piston 806. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, external air can enter the air storage cover 803 through the air inlet pipe 804 for temporary storage.

[0045] The second telescopic mechanism 10 includes a second T-shaped guide rod 1001 fixedly connected to the end of each first push rod 1111, the first connecting frame 1110 is sleeved on the side wall of the second T-shaped guide rod 1001, and the side wall of each second T-shaped guide rod 1001 is sleeved with a fifth spring 1002. When the ball 1112 is against the side wall of the cam 12, it can slide along the side wall of the cam 12, and at the same time, the fifth spring 1002 is compressed.

[0046] Working principle: During use, when the cam 12 needs to be milled, the cam 12 with the inner hole processed is sleeved on the positioning tube 1103, and then the first moving plate 1108 is moved by the moving module 1107, and at the same time, the second moving plate 1109 is moved by the first telescopic mechanism 9, and then the first pushing rod 1111 is moved by the first connecting frame 1110 and the second telescopic mechanism 10. At the same time, when the first moving plate 1108 moves, the third pushing block 502 is moved by the first connecting plate 501. When the second inclined surface 503 and the third moving block 404 are gradually separated, the counterweight block 309 can move downward under the action of gravity, and the third pushing rod 307 is pushed to move by the hydraulic oil, and then the first moving block 301 is pushed to move. When the first moving block 301 When moving, the second moving block 302 and the second pushing block 303 are driven to move by the pressure control mechanism 6, so that the second pushing rod 305 slides along the inclined groove 304, so that the second moving rod 206 moves in the direction close to the circular cover 1102. When the second moving rod 206 moves, the second rotating rod 208 rotates, and at the same time, the first moving rod 201 is pushed to move upward, and the first rotating rod 203 pushes multiple first pushing blocks 1105 to move synchronously outward along the sliding groove 1104, so that the first inclined surface 1106 abuts against the top of the inner hole of the cam 12, so that the cam 12 can be pushed to move downward, and at the same time, the support rod 1115 is pushed downward, and the first spring 1119 is compressed, so that the cam 12 abuts against the top of the circular cover 1102, so as to realize the pre-clamping of the cam 12;

[0047] At the same time, when the cam 12 gradually moves downward along the positioning tube 1103, the second moving block 302 and the second connecting rod 807 can push the piston 806 to slide into the air storage cover 803, so that the air temporarily stored in the air storage cover 803 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air temporarily stored in the air storage cover 803 is squeezed and enters the annular cover 802 through the air supply pipe 805, and is blown onto the top of the circular cover 1102 through the blowing hole 801. Therefore, before the cam 12 is clamped and fixed, the top of the circular cover 1102 can be automatically blown and cleaned, which is more convenient and quick to use, and ensures the positioning accuracy, thereby ensuring the quality of subsequent milling processing;

[0048] When the first push rod 1111 abuts against the side wall of the cam 12, the cam 12 can be pushed to rotate and adjust along the positioning tube 1103. At the same time, when the ball 1112 abuts against the side wall of the cam 12, it can slide along the side wall of the cam 12. At the same time, the fifth spring 1002 is compressed, which can ensure that its long axis direction is perpendicular to the first push rod 1111 and its tip is facing the side away from the second movable plate 1109, so as to ensure the efficiency and quality of subsequent milling processing. After the second movable plate 1109 abuts against the side wall of the circular cover 1102, when the first movable plate 1108 continues to move, the fourth spring 902 is gradually compressed, and can drive the fourth push block 505 to continue to move. When the third inclined surface 506 abuts against the side wall of the third movable block 404, it can be connected to the first connecting rod 405. The counterweight block 309 is pushed to move downward and the hydraulic oil can be squeezed. At this time, the pressure is applied and the first moving block 301 is pushed to continue to move by the third pushing rod 307. At the same time, the second spring 603 is compressed, so that the distance between the first moving block 301 and the second moving block 302 gradually decreases. The second spring 603 is compressed. At this time, the visual sensor 606 detects the scale change of the scale plate 604 to determine the compression amount of the second spring 603, and the elastic force of the second spring 603 can be controlled, thereby controlling the squeezing force between the first pushing block 1105 and the cam 12, so as to achieve the clamping and fixing of the cam 12, ensure the clamping effect, and avoid damage to the cam 12. At the same time, it can provide a pre-tightening force, so that the clamping and fixing effect is better, thereby ensuring the quality of subsequent milling processing;

[0049] Furthermore, when the cam 12 is clamped and fixed, when the first movable plate 1108 moves, the fixed block 710 is driven to move synchronously through the pointer 1113, and when the fifth pushing block 709 is disengaged from the fifth inclined surface 711, the sliding block 703 and the triangular block 705 can move in the direction away from the fixed cover 702 under the action of the third spring 704, and when the first movable block 301 moves, the limit block 701 is driven to move, and the limit block 701 is abutted against the side wall of the fourth inclined surface 706, so that the triangular block 705 and the sliding block 703 can be pushed to move in the direction close to the fixed cover 702. At the same time, the third spring 704 is compressed, and when the first movable block 301 stops moving, the sliding block 703 and the triangular block 705 can move in the direction away from the fixed cover 702 under the action of the third spring 704, and make the limiting block 701 abut against the side wall of the limiting surface 707, so as to limit the first moving block 301, so as to ensure that the first pushing block 1105 can always clamp and fix the cam 12 after the first pushing rod 1111 and the ball 1112 are separated from the cam 12, which is more stable and reliable. Then, the first moving plate 1108 and the second moving plate 1109 are driven to move and reset through the moving module 1107, thereby driving the first pushing rod 1111 and the ball 1112 to separate from the cam 12 and move and reset, and then, the cam 12 can be milled by the milling machine body 1;

[0050] After the milling process is completed, the first moving plate 1108 is moved and reset through the moving module 1107. When the fifth inclined surface 711 abuts against the fifth pushing block 709, the sliding block 703 and the triangular block 705 can be driven by the second connecting plate 708 to move in the direction close to the fixed cover 702 and disengage from the limiting block 701. At this time, the first moving block 301 is no longer limited. Moreover, when the second inclined surface 503 abuts against the third moving block 404, the counterweight block 309 can be driven to move upwards through the first connecting rod 405. Under the action of hydraulic pressure, The first moving block 301 can be driven to move and reset through the third pushing rod 307, and the second moving block 302 and the second pushing block 303 can be driven to reset through the pressure control mechanism 6, so that the first moving rod 201 is pulled downward to reset through the second moving rod 206 and the second rotating rod 208, and then the first rotating rod 203 pulls the multiple first pushing blocks 1105 to move and reset into the positioning tube 1103, and the cam 12 is released, so that the cam 12 can be automatically released after the milling process is completed, which is more convenient and quick, and can improve the processing efficiency;

[0051] At the same time, when the first moving block 301 moves and resets, it can drive the second moving block 302 to move and reset, and drive the piston 806 to move away from the air storage cover 803 through the second connecting rod 807, so that negative pressure is generated in the piston 806. At the same time, the first one-way valve opens and the second one-way valve closes. At this time, external air can enter the air storage cover 803 through the air inlet pipe 804 for temporary storage.

Claims

1. A workpiece clamping platform for milling, comprising a worktable (101) arranged on a milling machine body (1), characterized in that: The top of the workbench (101) is detachably connected to a clamping platform assembly (11), and the clamping platform assembly (11) is used to clamp the cam (12); The clamping platform assembly (11) comprises a mounting plate (1101), and a hollow circular cover (1102) is fixedly connected to the top of the mounting plate (1101), a hollow positioning tube (1103) is fixedly connected to the top of the circular cover (1102), and a cam (12) is sleeved on the side wall of the positioning tube (1103), and the side wall of the positioning tube (1103) is provided with a plurality of sliding grooves (1104) arranged in an array, and each sliding groove (1104) is slidably connected to A first pushing block (1105), the first pushing block (1105) comprising a first inclined surface (1106), and the movement of the first pushing block (1105) is pushed by a first pushing mechanism (2), a plurality of support rods (1115) arranged in an array are inserted at the top of the circular cover (1102), and a disc (1116) is fixedly connected to the lower end of each support rod (1115), and a first set of rods (1117) is fixedly connected to the bottom of the disc (1116), and the first set of rods (1117) The side wall of the positioning tube (1103) is sleeved with a first sleeve (1118), the lower end of the first sleeve (1118) is fixed to the top of the mounting plate (1101), and the side wall of each first sleeve (1118) is sleeved with a first spring (1119), the side wall of the positioning tube (1103) is provided with a cleaning mechanism (8) for blowing and cleaning the top of the circular cover (1102), and the top of the mounting plate (1101) is connected to the first movable plate (1101) via a movable module (1107). 8), the side wall of the first movable plate (1108) is connected to the second movable plate (1109) via a first telescopic mechanism (9), the side wall of the second movable plate (1109) is fixedly connected to two symmetrically arranged first connecting frames (1110), and the side wall of the first connecting frame (1110) is connected to two symmetrically arranged first pushing rods (1111) via a second telescopic mechanism (10), and balls (1112) are arranged at opposite ends of the two first pushing rods (1111).

2. A workpiece clamping platform for milling according to claim 1, characterized in that: The first pushing mechanism (2) comprises a first connecting block (202) fixedly connected to the side wall of each first pushing block (1105), and a first moving rod (201) is inserted into the positioning tube (1103), the side wall of the first moving rod (201) is fixedly connected to a plurality of second connecting blocks (204) arranged in an array, and the side wall of each first connecting block (202) is rotatably connected to a first rotating rod (203), the other end of the first rotating rod (203) is rotatably connected to the side wall of the second connecting block (204), and the circular cover A second movable rod (206) is inserted into the side wall of (1102), one end of the second movable rod (206) is fixedly connected to the third connecting block (207), and the lower end of the first movable rod (201) is fixedly connected to the fourth connecting block (205), the side wall of the fourth connecting block (205) is rotatably connected to the second rotating rod (208), and the other end of the second rotating rod (208) is rotatably connected to the side wall of the third connecting block (207), and the movement of the second movable rod (206) is driven by the second driving mechanism (3).

3. A workpiece clamping platform for milling according to claim 2, characterized in that: The second pushing mechanism (3) comprises a first moving block (301) slidably connected to the top of the mounting plate (1101), and the side wall of the first moving block (301) is connected to the second moving block (302) via a pressure control mechanism (6), the side wall of the second moving block (302) is fixedly connected to the second pushing block (303), and the top of the second pushing block (303) is provided with an inclined groove (304), the bottom of the second moving rod (206) is fixedly connected to the second pushing rod (305), and the second pushing rod (305) is inserted into the inclined groove (304), and the mounting plate (1101) A fixed tube (306) is fixedly connected to the top of the mounting plate (1101), and a third push rod (307) is inserted into the fixed tube (306); the other end of the third push rod (307) is fixed to the side wall of the first moving block (301); a connecting tube (308) is fixedly connected to the top of the fixed tube (306); the connecting tube (308) and the fixed tube (306) are filled with hydraulic oil; a counterweight (309) is connected to the connecting tube (308) via a moving mechanism (4); and a limiting mechanism (7) for limiting the first moving block (301) is provided at the top of the mounting plate (1101).

4. The workpiece clamping platform for milling according to claim 3, characterized in that: The pressure control mechanism (6) comprises two symmetrically arranged second rods (602) fixedly connected to the side wall of the first moving block (301), and the side wall of each second rod (602) is sleeved with a second sleeve (601), the other end of the second sleeve (601) is fixed to the side wall of the second moving block (302), and the side wall of each second sleeve (601) is sleeved with a second spring (603), the top of the second moving block (302) is fixedly connected to a scale plate (604), the top of the first moving block (301) is fixedly connected to an L-shaped block (605), and the top of the L-shaped block (605) is fixedly inserted with a visual sensor (606).

5. The workpiece clamping platform for milling according to claim 3, characterized in that: The moving mechanism (4) comprises a support plate (401) fixedly connected to the side wall of the connecting tube (308), and two symmetrically arranged third sleeves (402) are fixedly connected to the top of the support plate (401), a third set of rods (403) are inserted into the third sleeves (402), and the upper end of the third set of rods (403) is fixedly connected to a third moving block (404), the bottom of the third moving block (404) is fixedly connected to a first connecting rod (405), and the lower end of the first connecting rod (405) is fixed to the top of the counterweight block (309), and the movement of the third moving block (404) is driven by a third driving mechanism (5).

6. The workpiece clamping platform for milling according to claim 5, characterized in that: The third pushing mechanism (5) comprises a first connecting plate (501) fixedly connected to the top of the first moving plate (1108), and the side wall of the first connecting plate (501) is fixedly connected to a third pushing block (502), the third pushing block (502) comprises a second inclined surface (503), and the side wall of the third pushing block (502) is fixedly connected to a second connecting frame (504), the other end of the second connecting frame (504) is fixedly connected to a fourth pushing block (505), and the fourth pushing block (505) comprises a third inclined surface (506).

7. The workpiece clamping platform for milling according to claim 3, characterized in that: The cleaning mechanism (8) comprises a plurality of air blowing holes (801) arranged in an array and opened on the side wall of the positioning tube (1103), and the inner side wall of the positioning tube (1103) is fixedly connected to an annular cover (802), the top of the mounting plate (1101) is fixedly connected to an air storage cover (803), and a piston (806) is slidably connected inside the air storage cover (803), and the end of the piston (806) is fixedly connected to a second connecting rod (807), and the second connecting rod (80 7) is fixed to the side wall of the second moving block (302), the side wall of the air storage cover (803) is fixedly connected to an air intake pipe (804), and a first one-way valve is arranged in the air intake pipe (804), the side wall of the air storage cover (803) is fixedly connected to an air supply pipe (805), the other end of the air supply pipe (805) passes through the circular cover (1102) and is fixed to the bottom of the annular cover (802), and a second one-way valve is arranged in the air supply pipe (805).

8. The workpiece clamping platform for milling according to claim 7, characterized in that: The limiting mechanism (7) comprises a limiting block (701) fixedly connected to the side wall of the first moving block (301), and a fixed cover (702) on the top of the mounting plate (1101), a sliding block (703) being slidably connected inside the fixed cover (702), and a third spring (704) being fixedly connected between the sliding block (703) and the fixed cover (702), and a plurality of triangular blocks (705) arranged in an array being fixedly connected to the side wall of the sliding block (703) opposite to the limiting block (701), and the triangular blocks (705) comprising a fourth inclined surface (706) and a limiting surface The side wall of the sliding block (703) away from the gas storage cover (803) is fixedly connected to the second connecting plate (708), and the side wall of the second connecting plate (708) is fixedly connected to the fifth pushing block (709), the side wall of the first movable plate (1108) is fixedly connected to the L-shaped pointer (1113), and the top of the mounting plate (1101) is provided with a scale mark (1114), the bottom of the pointer (1113) is fixedly connected to the fixed block (710), and the fixed block (710) includes a fifth inclined surface (711).

9. The workpiece clamping platform for milling according to claim 1, characterized in that: The first telescopic mechanism (9) comprises two symmetrically arranged first T-shaped guide rods (901) fixedly connected to the side wall of the second movable plate (1109); the first movable plate (1108) is sleeved on the side wall of the first T-shaped guide rod (901); and the side wall of each first T-shaped guide rod (901) is sleeved with a fourth spring (902).

10. The workpiece clamping platform for milling according to claim 1, characterized in that: The second telescopic mechanism (10) comprises a second T-shaped guide rod (1001) fixedly connected to the end of each first push rod (1111), the first connecting frame (1110) is sleeved on the side wall of the second T-shaped guide rod (1001), and the side wall of each second T-shaped guide rod (1001) is sleeved with a fifth spring (1002).

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