A workpiece clamping device for a machining center

Abstract

The present invention discloses a workpiece clamping device for a machining center, which relates to the technical field of workpiece clamping for a machining center. The device comprises a clamping assembly, an auxiliary assembly, a protective assembly, and a transmission assembly. The clamping assembly comprises a first turntable, the first turntable is rotatably connected to a first support disk, the first clamping disk is fixedly connected to a third support disk, a first clamping block and a second clamping block are slidably connected to the first clamping disk, the first clamping block and the second clamping block are provided with a rod, the rod is slidably connected to the first turntable, the rod of the second clamping block is slidably connected to the second turntable, and the second turntable is rotatably connected to the third support disk. The protective assembly comprises a flap, the flap is rotatably connected to the second support disk, the flap is rotatably connected to a telescopic rod, the telescopic rod is slidably connected to a telescopic rod tube, a telescopic rod spring is fixedly connected to the telescopic rod, and a first connecting rod is rotatably connected to the telescopic rod tube.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece clamping for machining centers, in particular to a workpiece clamping device for machining centers. Background Art

[0002] The machining center is an indispensable equipment in mechanical manufacturing. When the machining center is working, the workpiece to be processed needs to be fixed and then processed. The fixation of the material requires the use of a clamping device. The stability of the clamping device has a great influence on the processing accuracy, so it is very necessary for the machining center.

[0003] Chinese invention patent publication number CN110576324B discloses a pentagonal workpiece clamping device for CNC machining centers. The device uses multiple clamping plates to secure pentagonal workpieces, offering better grip and simpler operation than traditional clamping devices.

[0004] In the prior art, when clamping a workpiece, the fixture needs to be adjusted multiple times to center the workpiece. At the same time, when clamping some longer workpieces, the clamping is often not in place, and the workpiece falls off during processing, causing huge economic losses. Summary of the Invention

[0005] The cam is connected to the second support plate of the first supporting plate by the spring, and the cam is connected to the third support plate by the spring. The protective component includes a flap, which is rotatably connected to the second support plate. Two flaps are provided. The flap is rotatably connected to a telescopic rod, which is slidably connected to the telescopic rod tube. The first end of the telescopic rod spring is fixedly connected to the telescopic rod, and the second end of the telescopic rod spring is fixedly connected to the telescopic rod tube. The first end of the first connecting rod is rotatably connected to the telescopic rod tube, and the second end of the first connecting rod is rotatably connected to the second connecting rod, and the second connecting rod is fixedly connected to the sliding plate.

[0006] Preferably, the clamping assembly also includes a third turntable, the third turntable is fixedly connected to the first turntable, the first end of the third turntable is rotatably connected to the second support plate, the second end of the third turntable is rotatably connected to the second clamping plate, four third slide grooves are provided on the third turntable, the second clamping plate is fixedly connected to the first support plate, the second clamping plate is slidably connected to the third clamping block, the third clamping block is provided with a rod, and the rod of the third clamping block is slidably connected to the third turntable.

[0007] Preferably, the auxiliary component includes a first slide bar, which is slidably connected to the second clamping block and the first clamping block, and four first slide bars are provided on each of the second clamping block and the first clamping block. The first slide bar is fixedly connected to the first end of the first slide bar spring, and the second end of the first slide bar spring is fixedly connected to the second clamping block and the first clamping block. The first slide bar is rotatably connected to the first clamping plate, and a first clamping plate is provided on every two first slide bars.

[0008] Preferably, the first clamping plate is rotatably connected to a slant plate, the slant plate is fixedly connected to the first end of a torsion spring, the second end of the torsion spring is fixedly connected to the first slide bar, and the first clamping plate is fixedly connected to a first return spring.

[0009] Preferably, the auxiliary component also includes a second slide rod, the second slide rod is slidably connected to the third clamping block, the first end of the second slide rod spring is fixedly connected to the second slide rod, the second end of the second slide rod spring is fixedly connected to the third clamping block, the second slide rod is rotatably connected to the second clamping plate, and the second reset spring is fixedly connected to the second clamping plate.

[0010] Preferably, the protective assembly also includes a pressure rod, which is slidably connected to the support rod, a first end of a pressure rod spring is fixedly connected to the pressure rod, a second end of the pressure rod spring is fixedly connected to the support rod, the support rod is fixedly connected to the third support plate, the third support plate is fixedly connected to the base plate, a sliding groove is provided on the support rod, a telescopic rod tube is slidably connected to the support rod, a first end of a slider spring is fixedly connected to the third support plate, the second end of the slider spring is fixedly connected to the slider, and the slider is slidably connected to the support rod.

[0011] Preferably, the transmission assembly includes a sliding plate, which is slidably connected to the third sliding rod, and the sliding plate is rotatably connected to the gear ring, the third sliding rod is fixedly connected to the base plate, the first end of the lifting spring is fixedly connected to the base plate, the second end of the lifting spring is fixedly connected to the sliding plate, the base plate is rotatably connected to the first gear, the first gear is meshed with the gear ring, the first gear is fixedly connected to the motor, the motor is fixedly connected to the third supporting plate, the base plate is rotatably connected to the second gear, the second gear is meshed with the gear ring, and the second gear is fixedly connected to the first bevel gear.

[0012] The transmission unit is a gear which is fixedly mounted on the support frame, and the gear is connected to the first gear via a threaded connection to the first transmission shaft, the gear is connected to the second gear via a threaded connection to the first transmission shaft, and the gear is connected to the second transmission shaft via a threaded connection to the first transmission shaft.

[0013] The present invention provides a workpiece clamping device for a machining center, which has the following beneficial effects:

[0014] 1. The present invention is provided with a screw rod, which is provided with a thread. The first rotating block and the second rotating block are threadedly connected to the two ends of the screw rod. The threads at the two ends of the screw rod rotate in opposite directions. The first rotating block and the second rotating block are rotatably connected to the first turntable and the second turntable respectively. The screw rod rotates to drive the first rotating block and the second rotating block, and the first turntable and the second turntable are driven to rotate through the first rotating block and the second rotating block.

[0015] 2. The present invention is provided with a first turntable and a second turntable. The first turntable rotates to push the first clamping block to slide, and the second turntable rotates to drive the second clamping block to slide. The first turntable and the second turntable rotate synchronously so that the first clamping block and the second clamping block push the first clamping plate to clamp the workpiece. At the same time, the rotation of the first turntable drives the third turntable to rotate, and the rotation of the third turntable drives the third clamping block to slide. The sliding of the third clamping block pushes the second clamping plate to clamp the workpiece.

[0016] 3. The present invention is provided with a flap and a pressure rod. The flap is flipped to allow the sliding plate to rise and cut off the power transmission to achieve a protection function. The pressure rod is slidably connected to the support rod, so that when the pressure rod slides downward, it pushes the sliding plate to restore power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a top view of the present invention.

[0019] Figure 3 It is a front view of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the screw rod of the present invention.

[0021] Figure 5It is a structural schematic diagram of the first clamping disk of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the first turntable of the present invention.

[0023] Figure 7 Schematic diagram of the structure of the first sliding bar of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the second clamping plate of the present invention.

[0025] Figure 9 It is a structural schematic diagram of the third turntable of the present invention.

[0026] Figure 10 It is a structural schematic diagram of the telescopic rod tube of the present invention.

[0027] Figure 11 It is a structural schematic diagram of the protection component of the present invention.

[0028] Figure 12 It is a structural schematic diagram of the pressure rod of the present invention.

[0029] Figure 13 It is a structural schematic diagram of the sliding disk of the present invention.

[0030] Figure 14 It is a cross-sectional view of the second clamping block of the present invention.

[0031] In the figure: 1-clamping assembly; 2-auxiliary assembly; 3-protection assembly; 4-transmission assembly; 101-first supporting plate; 102-first rotating plate; 103-first clamping plate; 104-second rotating plate; 105-first clamping block; 106-second clamping block; 107-first slide; 108-second slide; 109-third rotating plate; 110-third slide; 111-second clamping plate; 112-third clamping block; 201-first slide bar; 202-first slide bar spring; 203-first clamping plate; 204-slant plate; 205-torsion spring; 206-first return spring; 207-second slide bar; 208-second slide bar spring; 209-second clamping plate; 210-second return spring; 301-second supporting plate; 302-flip plate; 303-telescopic Rod; 304-telescopic rod spring; 305-telescopic rod tube; 306-first connecting rod; 307-second connecting rod; 308-third support plate; 309-support rod; 310-slider; 311-slider spring; 312-pressure rod; 313-pressure rod spring; 401-sliding plate; 402-third sliding rod; 403-bottom plate; 404-lifting spring; 405-motor; 406-first gear; 407-second gear; 408-first bevel gear; 409-second bevel gear; 410-first belt; 411-first transmission shaft; 412-second transmission shaft; 413-tensioning slider; 414-tensioning spring; 415-second belt; 416-screw; 417-first rotating block; 418-second rotating block; 419-support plate; 420-gear ring. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0033] See also Figures 1 to 14As shown, the present invention provides a technical solution: a workpiece clamping device for a machining center, comprising a clamping assembly 1, an auxiliary assembly 2, a protective assembly 3 and a transmission assembly 4, wherein the clamping assembly 1 comprises a first turntable 102, two first slide grooves 107 are provided on the first turntable 102, a first end of the first turntable 102 is rotatably connected to a first support plate 101, the first support plate 101 is fixedly connected to a third support plate 308, a second end of the first turntable 102 is rotatably connected to a first clamping plate 103, the first clamping plate 103 is fixedly connected to the third support plate 308, and a first clamping plate 103 is slidably connected to the first clamping plate 103. It is connected to a first clamping block 105, two of which are provided, a rod is provided on the first clamping block 105, the rod of the first clamping block 105 is slidably connected to the first turntable 102, the first clamping disk 103 is slidably connected to a second clamping block 106, two of which are provided, a rod is provided on the second clamping block 106, the rod is slidably connected to the second turntable 104, the second turntable 104 is provided with two second slide grooves 108, the first end of the second turntable 104 is rotatably connected to the first clamping disk 103, and the second end of the second turntable 104 is rotatably connected to the third support disk 308. The protective component 3 includes a flap 302, which is rotatably connected to the second support plate 301. Two flaps 302 are provided. The flap 302 is rotatably connected to the telescopic rod 303, and the telescopic rod 303 is slidably connected to the telescopic rod tube 305. The first end of the telescopic rod spring 304 is fixedly connected to the telescopic rod 303, and the second end of the telescopic rod spring 304 is fixedly connected to the telescopic rod tube 305. The first end of the first connecting rod 306 is rotatably connected to the telescopic rod tube 305, and the second end of the first connecting rod 306 is rotatably connected to the second connecting rod 307. The second connecting rod 307 is fixedly connected to the sliding plate 401.

[0034] The clamping assembly 1 also includes a third turntable 109, which is fixedly connected to the first turntable 102, a first end of the third turntable 109 is rotatably connected to the second support plate 301, a second end of the third turntable 109 is rotatably connected to the second clamping plate 111, four third sliding grooves 110 are provided on the third turntable 109, the second clamping plate 111 is fixedly connected to the first support plate 101, a third clamping block 112 is slidably connected to the second clamping plate 111, a rod is provided on the third clamping block 112, and the rod of the third clamping block 112 is slidably connected to the third turntable 109.

[0035] like Figure 4 and Figure 5As shown, the first supporting plate 101 is fixedly connected to the first supporting plate 101, the first rotating plate 102 is rotatably connected to the first end of the first clamping plate 103, the second end of the first clamping plate 103 is rotatably connected to the second rotating plate 104, the first clamping block 105 and the second clamping block 106 are slidably connected to the first clamping block 105, the rod on the first clamping block 105 is slidably connected to the first slide groove 107 of the first rotating plate 102, and the rod on the second clamping block 106 is slidably connected to the second slide groove 108 of the second rotating plate 104. When the first rotating plate 102 and the second rotating plate 104 rotate, the first rotating plate 102 and the second rotating plate 104 push the rods on the first clamping block 105 and the second clamping block 106 to slide along the first slide groove 107 and the second slide groove 108, thereby pushing the first clamping block 105 and the second clamping block 106 to slide along the slide groove on the first clamping plate 103.

[0036] like Figure 6 、 Figure 8 and Figure 9 As shown, because the first turntable 102 is fixedly connected to the third turntable 109, the rotation of the first turntable 102 drives the third turntable 109 to rotate, and the rotation of the third turntable 109 pushes the rod under the third clamping block 112 to slide along the third slide groove 110, thereby pushing the third clamping block 112 to slide along the slide groove set on the second clamping disk 111.

[0037] The auxiliary component 2 includes a first slide bar 201, which is slidably connected to the second clamping block 106 and the first clamping block 105. Four first slide bars 201 are provided on each second clamping block 106 and the first clamping block 105. The first end of the first slide bar spring 202 is fixedly connected to the first slide bar 201, and the second end of the first slide bar spring 202 is fixedly connected to the second clamping block 106 and the first clamping block 105. The first slide bar 201 is rotatably connected to the first clamping plate 203, and a first clamping plate 203 is provided on every two first slide bars 201.

[0038] The first clamping plate 203 is rotatably connected to the inclined plate 204 , the first end of the torsion spring 205 is fixedly connected to the inclined plate 204 , the second end of the torsion spring 205 is fixedly connected to the first slide bar 201 , and the first clamping plate 203 is fixedly connected to the first return spring 206 .

[0039] The auxiliary component 2 also includes a second slide rod 207, which is slidably connected to the third clamping block 112, and the first end of the second slide rod spring 208 is fixedly connected to the second slide rod 207, and the second end of the second slide rod spring 208 is fixedly connected to the third clamping block 112, and the second slide rod 207 is rotatably connected to the second clamping plate 209, and the second clamping plate 209 is fixedly connected to the second return spring 210.

[0040] like Figure 8 and Figure 14 As shown, the third clamping block 112 is slidably connected to the second slide bar 207, so when the third clamping block 112 slides along the slide groove on the second clamping plate 111, it drives the second slide bar 207 to move, and the second slide bar 207 is rotatably connected to the second clamping plate 209. When the third clamping block 112 slides inward, the second clamping plate 209 contacts the workpiece and clamps the workpiece. Then, as the third clamping block 112 continues to slide, the second clamping plate 209 squeezes the second slide bar spring 208, causing the second slide bar 207 to slide toward the inside of the third clamping block 112, allowing the second clamping plate 209 to contact the workpiece. The workpiece is clamped tighter. At the same time, because the second clamping plate 209 is rotated and connected to the second slide spring 208, when the second slide bar 207 pushes the second clamping plate 209, the second clamping plate 209 can rotate according to the shape of the workpiece. The second clamping plate 209 rotates to squeeze or stretch the second return spring 210, so that the clamping surface of the second clamping plate 209 contacts the workpiece as much as possible, and the clamping is more stable. After the workpiece is taken out, because the second return spring 210 is fixed in the middle of the two second clamping plates 209, the second return spring 210 rebounds and drives the second clamping plate 209 to recover.

[0041] like Figure 4 、 Figure 7 and Figure 14 As shown, because the second return spring 210 is slidingly connected to the first clamping block 105 and the second clamping block 106, the first slide bar 201 is rotatably connected to the first clamping plate 203, and the first clamping plate 203 is rotatably connected to the first end of the inclined plate 204, and the second end of the inclined plate 204 is slidably connected to the first supporting plate 101. When the workpiece is long and has a large diameter, the bottom of the workpiece contacts the upper inclined surface of the inclined plate 204 when the workpiece is put in, and then as the workpiece continues to be put in, the inclined plate 204 squeezes the first slide bar spring 202, and the first slide bar 201 slides toward the inside of the first clamping block 105 and the second clamping block 106, so that the first clamping plate 203 is stretched to the four sides, and at the same time the first end of the inclined plate 204 flips, and the inclined plate 204 flips to stretch the torsion spring 205, and the second end of the inclined plate 204 moves with the first The clamping plate 203 is stretched open and slides upward along the inner wall of the first supporting plate 101. When the workpiece is placed in the middle of the first clamping plate 203, the first clamping plate 203 is pressed against the workpiece through the first slide spring 202, which plays a role of auxiliary installation. At this time, when the first clamping block 105 and the second clamping block 106 slide inward, they continue to squeeze the first slide spring 202, so that the first clamping plate 203 clamps the workpiece tighter. At the same time, the first clamping plate 203 is rotated to connect the first slide bar 201, so that the first clamping plate 203 fits the workpiece more closely. The first clamping plate 203 rotates and stretches the first return spring 206 at the same time, clamping the longer workpiece in two places, increasing the clamping length, making the workpiece more stable, and at the same time, the first return spring 206 rebounds to its original position after the workpiece is taken out.

[0042] The protective component 3 also includes a pressure rod 312, which is slidably connected to the support rod 309. The pressure rod 312 is fixedly connected to the first end of the pressure rod spring 313, and the second end of the pressure rod spring 313 is fixedly connected to the support rod 309. The support rod 309 is fixedly connected to the third support plate 308, and the third support plate 308 is fixedly connected to the base plate 403. A sliding groove is provided on the support rod 309, and the telescopic rod tube 305 is slidably connected to the support rod 309. The first end of the slider spring 311 is fixedly connected to the third support plate 308, and the second end of the slider spring 311 is fixedly connected to the slider 310. The slider 310 is slidably connected to the support rod 309.

[0043] like Figure 10 、 Figure 11 、 Figure 12 and Figure 14As shown, the second support plate 301 is mounted on the lower end surface of the third rotating disk 109, the first end of the flap 302 is flipped and connected to the second support plate 301, the telescopic rod 303 is rotatably connected to the second end of the flap 302, the telescopic rod 303 is slidably connected to the first end of the telescopic rod tube 305, the telescopic rod 303 and the telescopic rod tube 305 form a telescopic rod, the second end of the telescopic rod tube 305 is rotatably connected to the first end of the first connecting rod 306, the second end of the first connecting rod 306 is rotatably connected to the second connecting rod 307, the second connecting rod 307 is fixedly connected to the sliding plate 401, a lifting spring 404 is provided under the sliding plate 401, the lifting spring 404 is in a compressed state, and the third support plate 308 is fixedly connected to the bottom plate 303, so when the workpiece is long and needs to be clamped longer, the workpiece contacts the upper surface of the flap 302 when it is put down, pushing the flap 302 to flip downward. The flap 302 flips downward to squeeze the telescopic rod 303 into the telescopic rod tube 305 and compress the telescopic rod spring 304. The flap 302 flips ninety degrees. Therefore, when the flap 302 flips, the telescopic rod tube 305 is driven to slide along the support rod 309 toward the slider 310. The sliding of the telescopic rod tube 305 drives the slider 310 to slide. The sliding of the slider 310 compresses the slider spring 311. At the same time, because the telescopic rod tube 305 is connected to the first connecting rod 306 by rotation, the sliding of the telescopic rod tube 305 drives the first connecting rod 306 to rotate. The first connecting rod 306 The rotation causes the second connecting rod 307 to be separated from the pressure from above. Without the pressure on the second connecting rod 307, the lifting spring 404 under the sliding plate 401 lifts the sliding plate 401, and the sliding plate 401 rises along the third sliding rod 402. Because the sliding plate 401 is connected to the gear ring 420 by rotation, the gear ring 420 also rises. The gear ring 420 rises and disengages from the meshing of the first gear 406 and the second gear 407, so that the device will not clamp. At this time, the workpiece is put down further, and the bottom of the workpiece contacts the upper end surface of the pressure rod 312. Because the pressure rod 312 is slidably connected to the support rod 309, the pressure rod 312 slides down as the workpiece is put down, and at the same time, the pressure rod 312 slides down and stretches the pressure rod spring 313. After the workpiece is taken out, the pressure rod 312 is restored by the pressure rod spring 313. At the same time, because the slider spring 311 is compressed during work, the slider spring 311 is restored after the workpiece is taken out. The slider spring 311 restores and pushes the slider 310. The slider 310 pushes the telescopic rod tube 305 to slide toward the pressure rod 312. The sliding of the telescopic rod tube 305 drives the flap 302 to flip. The sliding of the telescopic rod tube 305 also drives the first connecting rod 306 to rotate, causing the second connecting rod 307 to press downward, pressing the sliding plate 401 to the meshing position. At the same time, the telescopic rod spring 304 returns the flap 302 to its original position.

[0044] The transmission assembly 4 includes a sliding plate 401, which is slidingly connected to the third sliding rod 402, and a gear ring 420 is rotatably connected to the sliding plate 401. The third sliding rod 402 is fixedly connected to the base plate 403, and a first end of a lifting spring 404 is fixedly connected to the base plate 403. The second end of the lifting spring 404 is fixedly connected to the sliding plate 401, and a first gear 406 is rotatably connected to the base plate 403. The first gear 406 is engaged with the gear ring 420, and the first gear 406 is fixedly connected to the motor 405. The motor 405 is fixedly connected to the third supporting plate 308. The second gear 407 is rotatably connected to the base plate 403, and the second gear 407 is engaged with the gear ring 420. The second gear 407 is fixedly connected to the first bevel gear 408.

[0045] The transmission assembly 4 also includes a second bevel gear 409, which is rotatably connected to a support plate 419, which is fixedly connected to the bottom plate 403. The second bevel gear 409 is meshed with the first bevel gear 408. The support plate 419 is rotatably connected to a first transmission shaft 411. The second bevel gear 409 is connected to the first transmission shaft 411 through a first belt 410. The first transmission shaft 411 is frictionally connected with a second belt 415. A slide groove is provided on the support plate 419. A tensioning slider 413 is slidably connected to the support plate 419. The tensioning slider 413 is The first end of the tensioning spring 414 is fixedly connected to the block 413, the second end of the tensioning spring 414 is fixedly connected to the tensioning slider 413, the second transmission shaft 412 is rotatably connected to the tensioning slider 413, the second belt 415 is frictionally connected to the first transmission shaft 411, the second transmission shaft 412 and the screw rod 416, the screw rod 416 is provided with a thread, the screw rod 416 is threadedly connected to the first rotating block 417 and the second rotating block 418, the first rotating block 417 is rotatably connected to the first turntable 102, and the second rotating block 418 is rotatably connected to the second turntable 104.

[0046] like Figure 3 、 Figure 4 and Figure 13As shown, the motor 405 transmits power to the gear ring 420 through the first gear 406, and the gear ring 420 is rotatably connected to the sliding plate 401. The second gear 407 is fixedly connected to the first bevel gear 408. The gear ring 420 transmits power to the first bevel gear 408 through the second gear 407. The first bevel gear 408 is rotatably connected to the support plate 419. The first bevel gear 408 transmits power to the first transmission shaft 411 through the first belt 410. The first transmission shaft 411 is connected to the second transmission shaft 412 and the screw rod 416 through the second belt 415, and the power is transmitted through the second belt 415. The second transmission shaft 412 is rotatably connected to the tensioning slider 413. The tensioning slider 413 is slidably connected to the support plate 419. The first end of the tensioning spring 414 is fixedly connected to the tensioning slider 413. The second end of the tensioning spring 414 is fixedly connected to the slide groove of the support plate 419. The first rotating block 417 and the screw rod 416 are threadedly connected. The second rotating block 418 and the first rotating block 417 are rotatably connected to the first rotary disk 102, and the second rotating block 418 is rotatably connected to the second rotary disk 104. Therefore, when the screw rod 416 rotates through the second belt 415, it drives the first rotating block 417 and the second rotating block 418 to move along the thread set on the screw rod 416. Because the threads at both ends of the screw rod 416 rotate in opposite directions, the first rotating block 417 and the screw rod 416 move synchronously in the direction in which the screw rod 416 is connected to the second belt 415 or move synchronously toward the two ends of the screw rod 416. When the first rotating block 417 and the second rotating block 418 move, the screw rod 416 will also move slightly. At this time, the belt is in a mating state through the tensioning spring 414 and will not lose power. When the first rotating block 417 and the second rotating block 418 move, they drive the first rotary disk 102 and the second rotary disk 104 to rotate, and the first rotary disk 102 and the second rotary disk 104 rotate to achieve clamping work.

[0047] Working principle: When in use, if the workpiece is short, put the workpiece into the device from the upper end face of the second clamping disk 111. When the workpiece is put in, it first contacts the inclined surface of the second clamping plate 209, and the second slide bar 207 is squeezed by the inclined surface to slide toward the inside of the third clamping block 112, compressing the second slide bar spring 208. The second slide bar 207 slides to put the workpiece between the second clamping plates 209. After the workpiece is put into the upper end face of the flap 302, it stops. The second clamping plate 209 is pre-clamped against the workpiece through the second slide bar spring 208, and then the motor 405 is started. The rotation of the motor 405 drives the first gear 406 to rotate. The first gear 406 rotates and transmits the second gear 407 through the gear ring 420. The second gear 407 rotates and drives the first bevel gear 408, the first bevel gear 408 is engaged with the second bevel gear 409, so the second bevel gear 409 rotates, the second bevel gear 409 rotates and transmits the first transmission shaft 411 through the first belt 410, the first transmission shaft 411 then drives the screw rod 416 to rotate through the second belt 415, the screw rod 416 is threadedly connected with the first rotating block 417 and the second rotating block 418, the screw rod 416 rotates to drive the first rotating block 417 and the second rotating block 418, the first rotating block 417 and the second rotating block 418 drive the first rotating disk 102 and the second rotating disk 104 to rotate, the first rotating disk 102 rotates to drive the third rotating disk 109 to rotate, the third rotating disk 109 rotates to push the rod provided on the third clamping block 112 to slide along the third sliding groove 110, The rod on the third clamping block 112 slides and drives the third clamping block 112 to move inward along the slide groove on the second clamping disk 111. The inward movement of the third clamping block 112 drives the second clamping plate 209 to contact the workpiece inward. After the second clamping plate 209 contacts the workpiece, it rotates and adjusts along with the shape of the workpiece, while stretching or compressing the second return spring 210. As the motor continues to rotate, the second clamping plate 209 squeezes the second slide bar 207 and compresses the second slide bar spring 208, so that the second clamping plate 209 completely clamps the workpiece and then stops the motor 405. The reason why the first gear 406 transmits the second gear 407 through the gear ring 420 is that the gear ring 420 is rotatably connected to the sliding plate 401, and the sliding plate 401 is fixed with the second connecting rod 307. When component 3 is working, it will drive the sliding plate 401 to move through the second connecting rod 307, thereby driving the gear ring 420, realizing the disconnection of power transmission to achieve a protective effect. At the same time, in the process of the second gear 407 transmitting the screw rod 416, the first bevel gear 408 and the second bevel gear 409 are used to change the direction of movement. When clamping, the screw rod 416 rotates and also moves translationally. The tensioning of the second belt 415 is controlled by the movement of the tensioning spring 414 and the tensioning slider 413, so that the second belt 415 is always frictionally connected to the screw rod 416 and transmits power to avoid power transmission interruption, so that the clamping component 1 can work normally. After the processing is completed, the motor 405 reverses, and the second clamping plate 209 is released through transmission to remove the workpiece.

[0048] When the workpiece to be clamped is long, the workpiece is put into the device from the upper end surface of the second clamping disk 111, and then continues to be put down after contacting the upper end surface of the flap 302. The workpiece continues to be put inward, pushing the flap 302 to flip downward, pressing the telescopic rod 303 into the telescopic rod tube 305 and compressing the telescopic rod spring 304. Therefore, when the flap 302 flips, the telescopic rod tube 305 is driven to slide along the support rod 309 toward the slider 310. The sliding of the telescopic rod tube 305 drives the slider 310 to slide, and the sliding of the slider 310 compresses the slider spring 311. At the same time, the sliding of the telescopic rod tube 305 drives the first connecting rod 306 to rotate. The rotation of the first connecting rod 306 causes the second connecting rod 307 to be released from the upper pressure, and then the sliding plate 401 connected below the second connecting rod 307 is lifted up. The spring 404 is lifted up along the third slide bar 402, and the third slide bar 402 rises and drives the gear ring 420 to rise. The gear ring 420 rises and disengages from the first gear 406 and the second gear 407, cutting off the power transmission between the motor and the clamping assembly. At this time, the workpiece continues to be lowered, and the bottom of the workpiece contacts the upper inclined surface of the inclined plate 204. Then the inclined plate 204 flips as the workpiece continues to be lowered. The tilted plate 204 flips and drives the first slide bar 201 to slide toward the first clamping block 105 or the second clamping block 106, while compressing the first slide bar spring 202. The first slide bar 201 slides to place the workpiece between the first clamping plates 203, and then the first clamping plates 203 rotate and adjust with the shape of the workpiece, while stretching or compressing the first return spring 206. After the first gear 406 is in gear, the second gear 407 is engaged with the first gear 408 and the second gear 409 is engaged with the first gear 409. Then the first gear 406 is engaged with the second gear 408 and the second gear 409 is engaged with the first gear 408. The screw rod 416 is driven to rotate, and the screw rod 416 drives the first rotary disk 102 and the first clamping disk 103 to rotate through the first rotating block 417 and the second rotating block 418. The first rotary disk 102 and the first clamping disk 103 rotate to push the rods provided on the first clamping block 105 and the second clamping block 106. The rods provided on the first clamping block 105 and the second clamping block 106 are pushed to drive the first clamping block 105 and the second clamping block 106 to slide inward along the sliding groove provided on the first clamping disk 103. The first clamping block 105 and the second clamping block 106 slide inwardly to drive the first clamping plate 203 to completely clamp the workpiece. At the same time, the first rotary disk 102 rotates to drive the third rotary disk 109, so that the upper and lower clamping mechanisms clamp the workpiece at the same time, making the workpiece more stable.After the machining is completed, the motor 405 reverses, releasing the device from its grip on the workpiece. The workpiece is then removed, and the pressure rod 312 is restored by the pressure rod spring 313. Simultaneously, the slider spring 311 rebounds and restores. The slider spring 311 rebounds and restores, pushing the slider 310. The slider 310 pushes the telescopic rod tube 305 to slide toward the pressure rod 312. The sliding of the telescopic rod tube 305 causes the flap 302 to flip. The sliding of the telescopic rod tube 305 also drives the first connecting rod 306 to rotate, causing the second connecting rod 307 to press downward, compressing the lifting spring 404 and pressing the sliding plate 401 into the engaged position. Simultaneously, the telescopic rod spring 304 returns the flap 302 to its original position, restoring the device to its initial state.

Claims

1. A workpiece clamping device for a machining center, comprising a clamping assembly (1), an auxiliary assembly (2), a protective assembly (3) and a transmission assembly (4), characterized in that: The clamping assembly (1) comprises a first turntable (102), two first slide slots (107) are provided on the first turntable (102), a first end of the first turntable (102) is rotatably connected to a first support plate (101), the first support plate (101) is fixedly connected to a third support plate (308), a second end of the first turntable (102) is rotatably connected to a first clamping plate (103), the first clamping plate (103) is fixedly connected to the third support plate (308), and the first clamping plate (103) is fixedly connected to the third support plate (308). The holding disk (103) is slidably connected to a first clamping block (105), two of which are provided, a rod is provided on the first clamping block (105), and the rod of the first clamping block (105) is slidably connected to the first rotating disk (102), the first clamping disk (103) is slidably connected to a second clamping block (106), two of which are provided, a rod is provided on the second clamping block (106), and the rod is slidably connected to the second rotating disk (104), the first clamping disk (103) is slidably connected to a second clamping block (106), two of which are provided, the second clamping block (106) is provided with a rod, and the rod is slidably connected to the second rotating disk (104), the first clamping disk (103) is slidably connected to the second clamping block (106), the first clamping block (106) ... block (103) is slidably connected to the second clamping block (106), the first clamping block (106) is slidably connected to the second rotating disk (104), the first clamping block (103) is slidably connected to the Two second slides (108) are provided on the second turntable (104), a first end of the second turntable (104) is rotatably connected to the upper first clamping disk (103), a second end of the second turntable (104) is rotatably connected to the third support disk (308), the protection component (3) includes a flap (302), the flap (302) is rotatably connected to the second support disk (301), two flaps (302) are provided, a telescopic rod (303) is rotatably connected to the flap (302), and the telescopic rod (303) is rotatably connected to the second support disk (301). The rod (303) is slidably connected to the telescopic rod tube (305); the first end of the telescopic rod spring (304) is fixedly connected to the telescopic rod (303); the second end of the telescopic rod spring (304) is fixedly connected to the telescopic rod tube (305); the first end of the first connecting rod (306) is rotatably connected to the telescopic rod tube (305); the second end of the first connecting rod (306) is rotatably connected to the second connecting rod (307); and the second connecting rod (307) is fixedly connected to the sliding plate (401).

2. A workpiece clamping device for a machining center according to claim 1, characterized in that: The clamping assembly (1) further includes a third turntable (109), the third turntable (109) being fixedly connected to the first turntable (102), a first end of the third turntable (109) being rotatably connected to the second support plate (301), a second end of the third turntable (109) being rotatably connected to the second clamping plate (111), four third sliding grooves (110) being provided on the third turntable (109), the second clamping plate (111) being fixedly connected to the first support plate (101), a third clamping block (112) being slidably connected to the second clamping plate (111), a rod being provided on the third clamping block (112), and the rod of the third clamping block (112) being slidably connected to the third turntable (109).

3. The workpiece clamping device for a machining center according to claim 1, characterized in that: The auxiliary component (2) includes a first slide bar (201), the first slide bar (201) is slidably connected to the second clamping block (106) and the first clamping block (105), four first slide bars (201) are provided on each of the second clamping block (106) and the first clamping block (105), the first end of the first slide bar spring (202) is fixedly connected to the first slide bar (201), the second end of the first slide bar spring (202) is fixedly connected to the second clamping block (106) and the first clamping block (105), the first slide bar (201) is rotatably connected to the first clamping plate (203), and one first clamping plate (203) is provided on every two first slide bars (201).

4. A workpiece clamping device for a machining center according to claim 3, characterized in that: The first clamping plate (203) is rotatably connected to a slanted plate (204), a first end of a torsion spring (205) is fixedly connected to the slanted plate (204), a second end of the torsion spring (205) is fixedly connected to the first slide bar (201), and a first return spring (206) is fixedly connected to the first clamping plate (203).

5. The workpiece clamping device for a machining center according to claim 3, characterized in that: The auxiliary component (2) further includes a second slide bar (207), the second slide bar (207) is slidably connected to the third clamping block (112), the first end of a second slide bar spring (208) is fixedly connected to the second slide bar (207), the second end of the second slide bar spring (208) is fixedly connected to the third clamping block (112), the second slide bar (207) is rotatably connected to a second clamping plate (209), and the second clamping plate (209) is fixedly connected to a second return spring (210).

6. The workpiece clamping device for a machining center according to claim 1, characterized in that: The protection assembly (3) further includes a pressure rod (312), the pressure rod (312) being slidably connected to the support rod (309), the pressure rod (312) being fixedly connected to a first end of a pressure rod spring (313), the second end of the pressure rod spring (313) being fixedly connected to the support rod (309), the support rod (309) being fixedly connected to a third support plate (308), the third support plate (308) being fixedly connected to the bottom plate (403), a sliding groove being provided on the support rod (309), the support rod (309) being slidably connected to a telescopic rod tube (305), the first end of a slider spring (311) being fixedly connected to the third support plate (308), the second end of the slider spring (311) being fixedly connected to a slider (310), and the slider (310) being slidably connected to the support rod (309).

7. The workpiece clamping device for a machining center according to claim 1, characterized in that: The transmission assembly (4) includes a sliding plate (401), the sliding plate (401) is slidably connected to the third sliding rod (402), the sliding plate (401) is rotatably connected to a gear ring (420), the third sliding rod (402) is fixedly connected to the base plate (403), the first end of a lifting spring (404) is fixedly connected to the base plate (403), the second end of the lifting spring (404) is fixedly connected to the sliding plate (401), the base plate (403) is rotatably connected to a first gear (406), the first gear (406) is meshed with the gear ring (420), the first gear (406) is fixedly connected to a motor (405), the motor (405) is fixedly connected to the third supporting plate (308), the base plate (403) is rotatably connected to a second gear (407), the second gear (407) is meshed with the gear ring (420), and the second gear (407) is fixedly connected to a first bevel gear (408).

8. The workpiece clamping device for a machining center according to claim 7, characterized in that: The transmission assembly (4) further includes a second bevel gear (409), the second bevel gear (409) is rotatably connected to a support plate (419), the support plate (419) is fixedly connected to the bottom plate (403), the second bevel gear (409) is meshed with the first bevel gear (408), the support plate (419) is rotatably connected to a first transmission shaft (411), the second bevel gear (409) is connected to the first transmission shaft (411) via a first belt (410), the first transmission shaft (411) is frictionally connected to a second belt (415), a slide groove is provided on the support plate (419), a tensioning slider (413) is slidably connected to the support plate (419), and the tensioning slider The first end of a tensioning spring (414) is fixedly connected to the block (413), the second end of the tensioning spring (414) is fixedly connected to the tensioning slider (413), the second transmission shaft (412) is rotatably connected to the tensioning slider (413), the second belt (415) is frictionally connected to the first transmission shaft (411), the second transmission shaft (412) and the screw rod (416), the screw rod (416) is provided with a thread, the screw rod (416) is threadedly connected to the first rotating block (417) and the second rotating block (418), the first rotating block (417) is rotatably connected to the first rotating disk (102), and the second rotating block (418) is rotatably connected to the second rotating disk (104).

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