CN115647884B - Electromagnetic clamping device and use method - Google Patents
Electromagnetic clamping device and use method Download PDFInfo
- Publication number
- CN115647884B CN115647884B CN202211423451.7A CN202211423451A CN115647884B CN 115647884 B CN115647884 B CN 115647884B CN 202211423451 A CN202211423451 A CN 202211423451A CN 115647884 B CN115647884 B CN 115647884B
- Authority
- CN
- China
- Prior art keywords
- plate
- coil
- iron core
- base plate
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 70
- 238000003825 pressing Methods 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The invention provides an electromagnetic clamping device and a use method thereof. The device provided by the invention can eliminate the huge impact on the surface of the workpiece when the existing electromagnetic clamp is clamped, and protect the surface of the workpiece from being damaged; the device has the advantages of high automation level, simple operation, large flexibility for clamping workpieces, quick action response, constant clamping force and high efficiency, and is particularly suitable for clamping large-batch flexible thin-wall parts.
Description
Technical Field
The invention relates to electromagnetism and related technologies, in particular to a clamping device which utilizes electromagnetic force to rapidly clamp a workpiece and has precisely controllable clamping force, and particularly relates to an electromagnetic clamping device and a use method thereof.
Background
Machine tool fixtures are a major component of process equipment and are widely used in the field of machine manufacturing. The workpiece is clamped on the workbench of the machine tool, and the relative position relationship between the workpiece, the cutter and the machine tool can be accurately determined, so that the machining precision of the part is ensured. When the traditional manual clamp clamps a workpiece, the labor intensity of workers is high, the clamping action is slow, the auxiliary processing time is long, the production efficiency is low, and the traditional manual clamp is more and more difficult to meet the high-efficiency production requirements of modern enterprises. At present, novel clamps such as hydraulic or pneumatic clamps are widely applied to enterprise production, and the processing automation level and the production efficiency are greatly improved. However, the hydraulic clamp and the pneumatic clamp have low transmission efficiency, complex structure, high manufacturing precision of elements, difficult sealing, high requirements for maintenance personnel, more auxiliary equipment, and special external power sources for providing action execution force for the auxiliary equipment, the hydraulic station or the air compression station of the auxiliary equipment is often large in volume, and once the medium of the hydraulic clamp leaks, the environment is easily polluted. In the automatic and rapid clamping process, the clamp is easy to impact the workpiece, the clamping force cannot be automatically adjusted along with the change of the size of the workpiece, and the clamp is difficult to be applied to clamping and processing of thin-wall workpieces.
Electromagnetic clamps have begun to find application in production, such as electromagnetic tables in surface grinders, electromagnetic chucks for adsorbing transferred workpieces or palletizing, and the like. The workpiece is fixed mainly through the suction force generated by the sucker body after the electromagnetic coil is electrified, and the electromagnetic clamp does not need transmission media and has a simple structure. The electromagnetic clamp is strong in adsorption force generated by electrifying, the electromagnetic adsorption force generated by unit area is far greater than the cutting force of a cutter, the positioning and clamping of a workpiece are convenient, the action is flexible, tedious and laborious manual operation is not needed, and the electromagnetic clamp is one of the preferential development directions of modern clamps. At present, an electromagnetic clamp mainly relies on electrification to generate electromagnetic attraction to clamp a workpiece, a clamping object is required to be a magnetic material, a clamped large workpiece is required to have a flat plane, and the electromagnetic clamp cannot clamp a non-magnetic metal material or a non-metal material. When the electromagnetic clamp works, the relative distances between the workpiece and the clamp are different, the workpiece is subjected to different electromagnetic acting forces, the closer the workpiece is to the clamp, the larger the electromagnetic acting force is, and when the distance is relatively close, the electromagnetic clamp generates a large adsorption force on the workpiece, so that the workpiece rapidly moves to be adsorbed on the clamp in an impact manner, and the impact is easy to damage the surface of the workpiece. For thin-wall easily-deformed workpieces, the impact force at the moment of contact between the workpiece and the clamp is more difficult to effectively control because errors of the workpiece size in the machining process of the previous working procedure are unavoidable. The impact not only causes the surface damage of the thin-wall part, but also can deform the local area of the thin-wall part, and even directly causes the scrapping of the product. These deficiencies greatly limit the further use of electromagnetic clamps.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an electromagnetic clamping device with accurately controllable clamping force and a use method thereof. The device comprises a rapid moving system, a fine adjustment clamping system and a control system; the rapid movement system comprises an upper bedplate 0101, a lower bedplate 0102, a left support plate 0201, a right support plate 0202, a first iron core 0301, a second iron core 0302, a third iron core 0303, a fourth iron core 0304, a first coil 0401, a second coil 0402, a third coil 0403, a fourth coil 0404, a left clamp plate 0501, a left base plate 0701, a piston rod 17, a cylinder 18, an electric cabinet 20, a first clamp plate 2101 and a second clamp plate 2102; the first pressing plate 2101 is fixed on the upper bedplate 0101 through screws, and the first pressing plate 2101 is arranged above the rectangular guide rail of the left clamping plate 0501; the second pressing plate 2102 is fixed on the lower bedplate 0102 through screws, and the second pressing plate 2102 is arranged above the rectangular guide rail of the left baseplate 0701; the cylinder 18 is fixed on the lower bedplate 0102 through screws, the piston rod 17 is installed in the cylinder 18, the left base plate 0701 is rigidly connected with the piston rod 17 through screws, a guide rail below the left base plate 0701 is installed in a chute of the lower bedplate 0102, the upper end of the left base plate 0701 passes through a slotted hole of the upper bedplate 0101, the upper end of the left base plate 0701 is rigidly connected with the left clamping plate 0501 through screws, and a guide rail below the left clamping plate 0501 is installed in the chute of the upper bedplate 0101; the right end of the first iron core 0301 passes through a through hole in the left base plate 0701, the first iron core 0301 is fixed on the left base plate 0701 through a screw, the first coil 0401 is installed on the first iron core 0301, the right end of the second iron core 0302 passes through the through hole in the left base plate 0701, the second iron core 0302 is fixed on the left base plate 0701 through a screw, the second coil 0402 is installed on the second iron core 0302, and the first coil 0401 is connected with the second coil 0402 in series; the other ends of the first coil 0401 and the second coil 0402 are respectively connected to a binding post of the electric cabinet 20, the left end of the third iron core 0303 passes through a through hole in the right support plate 0202, the third iron core 0303 is fixed on the right support plate 0202 through a screw, the third coil 0403 is mounted on the third iron core 0303, the left end of the fourth iron core 0304 passes through a through hole in the right support plate 0202, the fourth iron core 0304 is fixed on the right support plate 0202 through a screw, the fourth coil 0404 is mounted on the fourth iron core 0404, the third iron core 0403 is connected in series with the fourth coil 0404, and the other ends of the third coil 0403 and the fourth coil 0404 are respectively connected to the binding post of the electric cabinet 20; the left ends of the upper bedplate 0101 and the lower bedplate 0102 are fixedly connected with the left support plate 0201 through screws respectively, and the right ends of the upper bedplate 0101 and the lower bedplate 0102 are fixedly connected with the right support plate 0202 through screws respectively; the electric cabinet 20 is fixed below the lower bedplate 0102 through screws;
The fine adjustment clamping system comprises a right clamping plate 0502, a first stud 3201, a right base 0702, an end cover 08, a retainer ring 09, a tapered roller bearing 10, a screw rod 11, a coupler 12, an L-shaped bracket 13, a servo motor 14, a bushing 15, a supporting seat 16 and a first pressing plate 2101; the servo motor 14 is fixed on the L-shaped bracket 13 through a screw, the L-shaped bracket 13 and the supporting seat 16 are respectively fixed on the upper bedplate 0101 through screws, the bushing 15 is screwed in a screw hole of the supporting seat 16 through threads, and the left end face of the bushing 15 is fixed on the supporting seat 16; the screw rod 11 is installed on the bushing 15 through threaded connection; the tapered roller bearing 10 inner ring is installed on the left end excircle of lead screw 11, tapered roller bearing 10's outer lane is installed in the shoulder hole of right base 0702, retaining ring 09 passes through the screw to be fixed on the lead screw 11 left end excircle, the left end step terminal surface of lead screw 11 with the right-hand member of retaining ring 09 faces tapered roller bearing 10 inner ring axial fixation, end cover 08 passes through the screw to be fixed on right base 0702 left side ladder terminal surface, end cover 08 right-hand member face compresses tightly tapered roller bearing 10's outer lane terminal surface, end cover 08 right-hand member face with the ladder end of right base 0702 faces tapered roller bearing 10's outer lane axial fixation, first stud 3201 left end is passed right base 0702 through-hole installs in the screw of right clamp plate 0502, first stud 3201 right-hand member and nut rigid coupling, right clamp plate 0502 with right base 0702 can move relatively. The guide rail below the right base 0702 is arranged in the chute of the upper bedplate 0101; the first pressing plate 2101 is installed above the rectangular guide rail of the right base 0702, and the first pressing plate 2101 is fixed on the upper platen 0101 through screws; the left end of the coupler 12 is connected with the right end of the screw rod 11 through a spline, and a middle hole at the right end of the coupler 12 is rigidly connected with an output shaft of the servo motor 14;
The control system comprises a travel switch 19, a pressure sensor 06, a U-shaped plate 23, a hard spring 25, a first adjusting nut 2601, a second adjusting nut 2602, a third adjusting nut 2603, a straight rod 27, a guide frame 28, a valve core 29, a valve sleeve 30, a hanger rail 31, a second double-head screw 3202, a hook plate 22, a first stop pin 2401, a second stop pin 2402, a first spring pin 3301, a second spring pin 3302, a soft spring 34 and a control panel 35; the travel switch 19 is mounted on the lower bedplate 0102, the travel switch 19 is connected with the electric cabinet 20 through a wire, and the pressure sensor 06 is mounted in a stepped hole of the right base 0702; the valve sleeve 30 is connected with the air cylinder 18 through a pipeline, and the valve sleeve 30 is fixed on the lower bedplate 0102 through screws; the guide frame 28 is fixed on the lower platen 0102 through a screw, the right end of the straight rod 27 is connected with the valve core 29 through threads, a triangular throttling groove is formed in the valve core 29, the valve core 29 is installed in the valve sleeve 30, the left end of the straight rod 27 sequentially penetrates through a middle hole of the guide frame 28, a screw hole of a third adjusting nut 2603, a through hole on a flange at the right end of the U-shaped plate 23, a screw hole of a second adjusting nut 2602, a screw hole of a first adjusting nut 2601 and a middle hole of the hard spring 25, the first adjusting nut 2601, the second adjusting nut 2602, the third adjusting nut 2603 and the straight rod 27 are respectively connected through threads, and the straight rod 27 is fixed on the U-shaped plate 23 through the second adjusting nut 2602 and the third adjusting nut 2603; the first stop pin 2401 and the second stop pin 2402 are installed on the lower platen 0102, the hanger rail 31 is fixed below the lower platen 0102 by screws, and the U-shaped plate 23 is installed below the hanger rail 31 by dovetail grooves; the first spring pin 3301 is mounted on the hook plate 22, the second spring pin 3302 is mounted on the U-shaped plate 23, one end of the soft spring 34 is mounted on the first spring pin 3301, and the other end of the soft spring 34 is mounted on the second spring pin 3302; one end of the second double-ended screw 3202 passes through the through hole of the hook plate 22 and is fixed on the U-shaped plate 23 through threads, the other end of the second double-ended screw 3202 is fixedly connected with a nut, and the hook plate 22 can rotate around the second double-ended screw 3202; the two sides of the central line of the U-shaped plate 23 are symmetrically distributed with the hook plate 22, the first stop pin 2401, the second stop pin 2402, the hanger rail 31, the second double-head screw 3202, the first spring pin 3301, the second spring pin 3302 and the soft spring 34, the control panel 35 is fixed on the upper platen 0101 by screws, and the wires of the control panel 35 are connected to the binding posts of the electric cabinet 20.
The invention provides an electromagnetic clamping device, which comprises the following specific steps:
1) The clamping button on the control panel 35 is pressed, the power is turned on, the magnetic field generated by the energizing of the first coil 0401 and the second coil 0402 is the same as the magnetic field generated by the energizing of the third coil 0403 and the fourth coil 0404, and under the action of electromagnetic attraction, the left base plate 0701 carries the left clamping plate 0501 to move towards the right clamping plate 0502 under the action of the first iron core 0301 and the second iron core 0302; the piston rod 17 is driven by the left base plate 0701 to move rightwards rapidly;
2) The left base plate 0701 is contacted with the hard spring 25 after being moved rightwards for a certain distance, and the left base plate 0701 pushes the hard spring 25, the straight rod 27 and the valve core 29 to move rightwards; the left base plate 0701 drives the U-shaped plate 23 to move rightward along the hanger rail 31 through the straight rod 27, and after the U-shaped plate 23 drives the hook-shaped plate 22 to move rightward for a certain distance, the hook-shaped plate 22 is separated from the first stop pin 2401, and the hook-shaped plate 22 contacts with the second stop pin 2402; under the action of the second stop pin 2402, the hook plate 22 rotates, the valve core 29 gradually enters the valve sleeve 30 under the pushing of the straight rod 27, the flow area of a throttle valve port between the valve core 29 and the valve sleeve 30 gradually decreases, the exhaust resistance of a right cavity of the air cylinder 18 gradually increases, the moving speed of the piston rod 17 to the right gradually decreases, the speeds of the left base plate 0701 and the left clamping plate 0501 gradually decrease, the left clamping plate 0501 moves to contact with a workpiece after being decelerated, the left end of the hook plate 22 is clamped on the left end face of the left base plate 0701, and the travel switch 19 is pressed down by the left base plate 0701; the throttle passage on the valve core 29 is completely closed by the valve sleeve 30, the gas in the right cavity of the cylinder 18 cannot be discharged, and the left base plate 0701 and the left clamping plate 0501 are not moved rightward any more;
3) After the travel switch 19 is pressed down, the servo motor 14 is electrified to rotate, the servo motor 14 drives the screw rod 11 to rotate through the coupler 12, the screw rod 11 drives the right base 0702 and the right clamping plate 0502 to move leftwards, the right clamping plate 0502 gradually clamps a workpiece, the pressure between the right clamping plate 0502 and the workpiece is gradually increased, the pressure between the right clamping plate 0502 and the pressure sensor 06 is gradually increased, when the clamping force between the right clamping plate 0502 and the workpiece reaches a preset value, the pressure sensor 06 is triggered, the pressure sensor 06 feeds back a pressure signal to the electric control box 20, the electric control box 20 enables the servo motor 14 to be powered off to stop rotating, the right base 0702 and the right clamping plate 0502 do not move leftwards any more, and the left clamping plate 0501 and the right clamping plate 0502 finish clamping the workpiece;
4) After the workpiece is processed, a release button on the control panel 35 is pressed down, reverse current is introduced into the servo motor 14, reverse current is introduced into the first coil 0401 and the second coil 0402, the magnetic fields generated by the first coil 0401 and the second coil 0402 are opposite to the magnetic fields generated by the third coil 0403 and the fourth coil 0404, under the action of electromagnetic repulsive force, the first iron core 0301 and the second iron core 0302 drive the left base plate 0701 and the left clamping plate 0501 to move leftwards, the servo motor 14 reversely rotates after reverse current is introduced, the screw rod 11 reversely rotates and drives the right base plate 0702 and the right clamping plate 0502 to move rightwards, the distance between the left clamping plate 0501 and the right clamping plate 0502 is gradually increased, and the workpiece is gradually released; after the left base plate 0701 moves leftwards for a certain distance, the travel switch 19 returns to the original position, the servo motor 14 is powered off, and the right base 0702 and the right clamping plate 0502 stop moving; the left base plate 0701 continues to move leftwards under the action of electromagnetic force, the left base plate 0701 drives the U-shaped plate 23 to move leftwards through the hook-shaped plate 22, the U-shaped plate 23 drives the straight rod 27 and the valve core 29 to move leftwards, the relative position between the valve core 29 and the valve sleeve 30 is changed, a throttling channel on the valve core 29 is gradually opened, and the leftwards moving speed of the left base plate 0701 and the left clamping plate 0501 is accelerated;
5) In the process of moving the left base plate 0701 leftwards, when the hook plate 22 contacts with the first stop pin 2401, the hook plate 22 rotates under the action of the first stop pin 2401, the hook plate 22 is separated from the left end face of the left base plate 0701, the left base plate 0701 continues to move leftwards and quickly under the action of electromagnetic repulsive force and restoring elasticity of the hard spring 25, and after touching a stop switch, the left base plate 0701 stops moving and resets;
6) And (5) repeating the steps 1) to 5) when the workpiece is required to be clamped again and loosened.
Compared with the prior art, the technical scheme has incomparable advantages:
1) Compared with a pneumatic or hydraulic clamp, the clamping device does not need auxiliary equipment, does not have transmission media, has a simple structure, does not have the problem of medium leakage, and can be a magnetic material workpiece or a non-magnetic material workpiece.
2) Compared with the existing electromagnetic clamp, the clamping speed of the invention is controllable, has various speeds such as fast forward, slow forward and the like, has good dynamic feedback function, shortens the auxiliary time, eliminates the extremely large impact force existing in the clamping moment of the common electromagnetic clamp, and protects the surface of the workpiece from being damaged.
3) The clamping force applied to the workpiece is accurate and controllable, the clamping force is constant, the workpiece is not influenced by the dimension processing error of the previous working procedure of the workpiece, the clamping device can be suitable for clamping workpieces with different rigidities, and not only can clamp workpieces with thick walls and high rigidity, but also can clamp thin-wall parts with low rigidity and variability.
4) The device has good guidance performance, accurate clamping part of the workpiece and good anti-overturning performance, and the servo motor does not need to work for a long time and only needs to perform forward rotation or reverse rotation for a short time, so that the expensive motor is effectively protected, and the service life of the motor is prolonged.
5) The clamping device is small in size, compact in structure, high in automation degree in the clamping process, simple to operate, good in controllability, strong in robustness, safe and reliable in clamping and high in working efficiency.
Drawings
FIG. 1 is an isometric view of an electromagnetic clamping device;
FIG. 2 is a front view of an electromagnetic clamping device;
FIG. 3 is a top view of an electromagnetic clamping device;
FIG. 4 is a cross-sectional view taken along section A-A in FIG. 3;
FIG. 5 is an enlarged view of the portion I of FIG. 4;
FIG. 6 is a cross-sectional view taken along section B-B in FIG. 2;
FIG. 7 is a cross-sectional view taken along section C-C of FIG. 4;
FIG. 8 is an enlarged view of the portion II of FIG. 7;
FIG. 9 is a bottom view of the apparatus of the present invention when the workpiece is not clamped (with the underlying wires broken away);
FIG. 10 is a bottom view of the apparatus of the present invention clamping a workpiece (with the underlying wires broken away);
fig. 11 is a schematic view of the shape of the U-shaped plate 23.
In the figure: 0101: an upper platen; 0102: a lower platen; 0201: a left support plate; 0202: a right support plate; 0301: a first iron core; 0302: a second iron core; 0303: a third iron core; 0304: a fourth iron core; 0401: a first coil; 0402: a second coil; 0403: a third coil; 0404: a fourth coil; 0501: a left clamping plate; 0502: a right clamping plate; 06: a pressure sensor; 0701: a left substrate; 0702: a right base; 08: an end cap; 09: a retainer ring; 10: tapered roller bearings; 11: a screw rod; 12: a coupling; 13: an L-shaped bracket; 14: a servo motor; 15: a bushing; 16: a support base; 17: a piston rod; 18: a cylinder; 19: a travel switch; 20: an electric control box; 2101: a first platen; 2102: a second pressing plate; 22: a hook plate; 23: a U-shaped plate; 2401: a first stop pin; 2402: a second stop pin; 25: a hard spring; 2601: a first adjustment nut; 2602: a second adjustment nut; 2603: a third adjustment nut; 27: a straight rod; 28: a guide frame; 29: a valve core; 30: a valve sleeve; 31: a hanger rail; 3201: a first stud; 3202: a second stud; 3301: a first spring pin; 3302: a second spring pin; 34: a soft spring; 35: and a control panel.
Detailed Description
The invention provides an electromagnetic clamping device and a using method thereof, and details of the device and the using method thereof are described in detail by combining with figures 1-11.
The device comprises a fine adjustment clamping system, a quick movement system and a control system. The fast moving system comprises an upper platen 0101, a lower platen 0102, a left support plate 0201, a right support plate 0202, a first iron core 0301, a second iron core 0302, a third iron core 0303, a fourth iron core 0304, a first coil 0401, a second coil 0402, a third coil 0403, a fourth coil 0404, a left clamp plate 0501, a left base plate 0701, a piston rod 17, a cylinder 18, a first clamp plate 2101, a second clamp plate 2102, and an electric cabinet 20. The left ends of the upper and lower platens 0101 and 0102 are fixed to the left support plate 0201 by screw connection, and the right ends thereof are fixed to the right support plate 0202 by screw connection, and as shown in fig. 1, the bottom plates of the left and right support plates 0201 and 0202 are provided with U-shaped grooves for mounting so as to mount the jig on the table of the machine tool. The cylinder 18 is fixed on the lower platen 0102 by screws, the piston rod 17 is mounted in the cylinder 18, and the piston rod 17 is slidably and air-tightly connected to the cylinder 18. The upper end of the left base plate 0701 passes through the slotted hole of the upper platen 0101 and is rigidly connected with the left clamp plate 0501 through a screw, the middle part of the left base plate 0701 is fixedly connected with the left end of the piston rod 17 through a screw, a triangular guide rail and a rectangular guide rail below the left clamp plate 0501 are respectively arranged in two sliding grooves of the upper platen 0101, and a triangular guide rail and a rectangular guide rail on the left side and the right side below the left base plate 0701 are arranged in two sliding grooves of the lower platen 0102, as shown in fig. 7. The first clamp plate 2101 is secured to the upper platen 0101 by screws, above the rectangular rail of the left clamp plate 0501. The second platen 2102 is secured to the lower platen 0102 by screws, above the rectangular rail of the left base 0701. The surfaces of the guide rails on the left clamping plate 0501 and the left base plate 0701 and the sliding grooves of the upper bedplate 0101 and the lower bedplate 0102 are smooth, the resistance of the guide rails and the sliding grooves to each other is small, no blocking phenomenon exists, lubricating oil can be coated during use, and the resistance between the guide rails and the sliding grooves is further reduced. The triangular guide rail is used on the left clamping plate 0501 and the left base plate 0701, when a workpiece is clamped, the left clamping plate 0501 can only move linearly, the accuracy and the guiding performance of the linear motion of the guide rail are improved, the clamping device is convenient to accurately clamp the workpiece, the contact area of the rectangular guide rail is large, and the bearing capacity of the clamping device is improved. During use, the wear of the triangular guide rail can also be compensated automatically. The gap between the first pressing plate 2101 and the rectangular guide rail of the left clamping plate 0501 and the gap between the second pressing plate 2102 and the rectangular guide rail of the left base plate 0701 are adjusted, so that the resistance of the guide rail pair in movement is reduced, and the dynamic stiffness and anti-overturning moment capacity of the clamp system are improved. The right end of the first iron core 0301 passes through a through hole on the left base plate 0701, the first iron core 0301 is fixed on the left base plate 0701 through a screw, the first coil 0401 is installed on the first iron core 0301, the right end of the second iron core 0302 passes through a through hole on the left base plate 0701, the second iron core 0302 is fixed on the left base plate 0701 through a screw, the second coil 0402 is installed on the second iron core 0302, and the first coil 0401 is connected with the second coil 0402 in series. The other ends of the first coil 0401 and the second coil 0402 are respectively connected to the binding post of the electric cabinet 20, as shown in fig. 6, the left end of the third iron core 0303 passes through the through hole on the right support plate 0202, the third iron core 0303 is fixed on the right support plate 0202 through a screw, the third coil 0403 is mounted on the third iron core 0303, the left end of the fourth iron core 0304 passes through the through hole on the right support plate 0202, the fourth iron core 0304 is fixed on the right support plate 0202 through a screw, the fourth coil 0404 is mounted on the fourth iron core 0404, the third coil 0403 is connected with the fourth coil 0404 in series, the other ends of the third coil 0403 and the fourth coil 0404 are respectively connected to the binding post of the electric cabinet 20, and the electric cabinet 20 is fixed below the lower bedplate 0102 through a screw, as shown in fig. 2. The first iron core 0301 and the second iron core 0302 at the left end are symmetrically distributed with the third iron core 0303 and the fourth iron core 0304 at the right end, and the first coil 0401 and the second coil 0402 at the left end are symmetrically distributed with the third coil 0403 and the fourth coil 0404 at the right end, as shown in fig. 6.
The fine adjustment clamping system comprises a right clamping plate 0502, a first stud 3201, a right base 0702, an end cover 08, a retainer ring 09, a tapered roller bearing 10, a screw rod 11, a coupling 12, an L-shaped bracket 13, a servo motor 14, a bushing 15, a support base 16 and a first pressing plate 2101. The L-shaped bracket 13 and the supporting seat 16 are both fixed on the upper bedplate 0101 through screws, and a left end flange of the servo motor 14 is fixed on the L-shaped bracket 13 through screws. The bushing 15 is arranged in a screw hole of the supporting seat 16 through threads, the left end face of the bushing 15 is fixed on the supporting seat 16 through screws, and the central line of the output shaft of the servo motor 14 is coaxial with the central line of the bushing 15 in equal height. The screw 11 is screwed on the bushing 15. The tapered roller bearing 10 inner circle is installed on the left end excircle of lead screw 11, tapered roller bearing 10's outer lane is installed in the shoulder hole of right base 0702, retaining ring 09 passes through the fix with screw on the left end excircle of lead screw 11, the step face of lead screw 11 left end and the right-hand member face of retaining ring 09 are to tapered roller bearing 10 inner circle axial fixity, end cover 08 passes through the fix with screw on the left step terminal surface of right base 0702, the right-hand member face of end cover 08 compresses tightly tapered roller bearing 10's outer lane terminal surface, the right-hand member face of end cover 08 and the step terminal surface of right base 0702 are facing tapered roller bearing 10's outer lane axial fixity, tapered roller bearing 10 can bear the axial force of anchor clamps when the centre gripping work piece as shown in fig. 5. The left end of the first stud 3201 passes through the through hole of the right base 0702 and is installed in the screw hole of the right clamp plate 0502, the right end of the first stud 3201 is fixedly connected with the nut, and a gap is reserved between the right clamp plate 0502 and the right base 0702, as shown in fig. 4. During clamping, the right clamping plate 0502 can slightly move rightwards, a gap between the right clamping plate 0502 and the right base 0702 is eliminated, clamping force is transmitted to the pressure sensor 06 through the right clamping plate 0502, poor contact possibly existing between a workpiece with uneven surface and the sensor 6 can be prevented through the assembly relation, and accuracy of pressure measurement is improved. The rail under the right base 0702 fits within the chute of the upper platen 0101. The first platen 2101 is secured to the upper platen 0101 by screws that are positioned above the right base 0702 rail to enhance the dynamic stiffness and anti-toppling capabilities of the clamp. The left end of the coupler 12 is connected with the right end of the screw rod 11 through spline fit, a middle hole at the right end of the coupler 12 is fixedly connected with an output shaft of the servo motor 14 through a screw, spline fit is adopted between the coupler 12 and the screw rod 11, so that rotation and torque of the servo motor 14 are transmitted to the screw rod 11, the relative position of the screw rod 11 and the coupler 12 can be changed, the screw rod 11 can rotate, and can axially move to drive the right clamping plate 0502 to clamp and loosen a workpiece.
The control system includes a travel switch 19, a pressure sensor 06, a U-shaped plate 23, a hard spring 25, a first adjustment nut 2601, a second adjustment nut 2602, a third adjustment nut 2603, a straight rod 27, a guide bracket 28, a spool 29, a valve housing 30, a hanger rail 31, a second double-headed screw 3202, a hook plate 22, a first stopper pin 2401, a second stopper pin 2402, a first spring pin 3301, a second spring pin 3302, a soft spring 34, a control panel 35, and the like. The travel switch 19 is installed on the lower platen 0102 through the screw, and travel switch 19 passes through the wire and is connected with electric cabinet 20, and pressure sensor 06 installs in the shoulder hole of right base 0702, with right splint 0502 right-hand member face in close contact. The valve sleeve 30 is connected to the cylinder 18 by a pipe, and the valve sleeve 30 is fixed to the lower platen 0102 by screws. The guide frame 28 is fixed on the lower platen 0102 through a screw, the right end of the straight rod 27 is connected with the valve core 29 through threads, a triangular throttling groove is formed in the valve core 29, the valve core 29 is arranged in the valve sleeve 30, the relative position between the valve core 29 and the valve sleeve 30 can be changed, and when the valve core 29 is completely closed by the valve sleeve 30 through an exhaust channel of the throttling opening as shown in fig. 9 and 10, good air tightness is achieved between the valve core 29 and the valve sleeve 30, and air in the valve sleeve 30 cannot be exhausted. The left end of the straight rod 27 sequentially passes through a middle hole of the guide frame 28, a screw hole of a third adjusting nut 2603, a through hole on a flange at the right end of the U-shaped plate 23, a screw hole of a second adjusting nut 2602, a screw hole of a first adjusting nut 2601 and a middle hole of the hard spring 25. The first adjusting nut 2601, the second adjusting nut 2602 and the third adjusting nut 2603 are respectively connected with the straight rod 27 through threads. The axial position of the hard spring 25 is adjusted by adjusting the position of the first adjusting nut 2601 according to the size of the workpiece to be clamped, thereby adjusting the positional relationship between the valve body 29 and the valve housing 30 and the sealing position of the throttle passage of the valve body 29. The right end of the U-shaped plate 23 is protruded, and a through hole and a dovetail groove are formed in the right end of the U-shaped plate 23, as shown in fig. 11, a second adjusting nut 2602 and a third adjusting nut 2603 are located on the left side and the right side of the right end flange of the U-shaped plate 23 and are abutted against the upper flange of the U-shaped plate 23 to fix the straight rod 27 and the U-shaped plate 23 together, so that the left base plate 0701 also drives the U-shaped plate 23 to move when pushing the straight rod 27 to move rightwards. The first blocking pin 2401 and the second blocking pin 2402 are installed on the lower platen 0102, a counter bore is formed in the hanger rail 31, a screw is installed in the counter bore to fix the hanger rail 31 below the lower platen 0102, the U-shaped plate 23 is installed below the hanger rail 31 through a dovetail groove, and the U-shaped plate 23 can slide on the hanger rail 31 and does not fall down. One end of the second double-ended screw 3202 passes through the hole in the hook plate 22 and is fixed on the U-shaped plate 23 through threads, the other end of the second double-ended screw 3202 is fixedly connected with a nut, and the hook plate 22 can rotate around the second double-ended screw 3202. The first spring pin 3301 is installed on the hook plate 22, the second spring pin 3302 is installed on the U-shaped plate 23, one end of the soft spring 34 is installed on the first spring pin 3301, the other end of the soft spring 34 is installed on the second spring pin 3302, and the soft spring 34 ensures that the hook plate 22 is not dislocated due to overlarge rotation angle. The hook plate 22, the first stop pin 2401, the second stop pin 2402, the hanger rail 31, the second double-head stud 3202, the first spring pin 3301, the second spring pin 3302 and the soft spring 34 are symmetrically distributed on two sides of the central line of the U-shaped plate 23. In the rightward movement of the cylinder 18, the exhaust gas is discharged through the orifice between the valve housing 30 and the valve spool 29, and the flow area of the orifice on the valve spool 29 gradually decreases, the pressure of the right chamber of the cylinder 18 gradually increases, the rigidity in the circuit gradually increases, the rapid movement of the piston rod 17 is blocked, and the left clamp plate 0501 decelerates. When the throttle on the valve core 29 is completely closed by the valve sleeve 30, the gas in the right cavity of the cylinder 18 cannot be discharged, the pressure in the right cavity of the cylinder 18 is rapidly increased, the resistance to rightward movement of the piston rod 17 is rapidly increased, and the left base plate 0701 and the left clamping plate 0501 are no longer moved rightward, so that severe collision between the left clamping plate 0501 and a workpiece to be clamped is avoided. When the first coil 0401, the second coil 0402, the third coil 0403 and the fourth coil 0404 are supplied with larger current, the larger electromagnetic force is, the faster the left base plate 0701 pushes the straight rod 27 to move rightwards by the larger electromagnetic force, the faster the throttle opening of the valve core 29 is closed, the faster the resistance of the piston rod 17 to move rightwards is increased, the faster the left clamping plate 0501 is slowed down by the resistance, therefore, the clamp can still avoid severe collision between the left clamping plate 0501 and a workpiece, and the clamp system has good dynamic feedback function and strong robustness.
When the electromagnetic clamping device is used, the specific operation steps are as follows:
1) The clamping button on the control panel 35 is pressed, the power is turned on, the magnetic field generated by energizing the first coil 0401 and the second coil 0402 is the same as the magnetic field generated by energizing the third coil 0403 and the fourth coil 0404, under the action of electromagnetic attraction force, the left base plate 0701 carries the left clamping plate 0501 to move rapidly towards the right clamping plate 0502 under the action of the first iron core 0301 and the second iron core 0302, and the piston rod 17 moves rapidly to the right under the drive of the left base plate 0701.
2) The left base plate 0701 moves rightward and rapidly by a certain distance and then contacts the hard spring 25, and the left base plate 0701 pushes the hard spring 25, the straight rod 27 and the valve core 29 to move rightward. The left base plate 0701 drives the U-shaped plate 23 to move rightwards along the hanger rail 31 through the straight rod 27, and after the U-shaped plate 23 drives the hook-shaped plate 22 to move rightwards for a certain distance, the hook-shaped plate 22 is separated from the first stop pin 2401, and the hook-shaped plate 22 is contacted with the second stop pin 2402. Under the action of the second stop pin 2402, the hook plate 22 rotates, the valve core 29 gradually enters the valve sleeve 30 under the pushing of the straight rod 27, the flow area of the throttle valve port between the valve core 29 and the valve sleeve 30 gradually decreases, the exhaust resistance of the right cavity of the air cylinder 18 gradually increases, the rightward moving speed of the piston rod 17 gradually decreases, the speeds of the left base plate 0701 and the left clamp plate 0501 gradually decrease, the left clamp plate 0501 contacts with a workpiece after being decelerated, the left end of the hook plate 22 is clamped on the left end face of the left base plate 0701, the travel switch 19 is pressed by the left base plate 0701, the throttle channel on the valve core 29 is completely closed by the valve sleeve 30, the air in the right cavity of the air cylinder 18 cannot be exhausted, and the left base plate 0701 and the left clamp plate 0501 do not move rightward any more, as shown in fig. 9.
3) After the travel switch 19 is pressed down, the servo motor 14 is electrified to rotate, the servo motor 14 drives the screw rod 11 to rotate through the coupler 12, the screw rod 11 drives the right base 0702 and the right clamping plate 0502 to move leftwards, the right clamping plate 0502 gradually clamps a workpiece, the pressure between the right clamping plate 0502 and the workpiece is gradually increased, the pressure sensor 06 is subjected to the pressure gradually increased, when the pressure between the right clamping plate 0502 and the workpiece reaches a preset value, the pressure sensor 06 is triggered, the pressure sensor 06 feeds back a pressure signal to the electric cabinet 20, the electric cabinet 20 enables the servo motor 14 to be powered off to stop rotating, the right base 0702 and the right clamping plate 0502 do not move leftwards any more, and the left clamping plate 0501 and the right clamping plate 0502 finish clamping the workpiece.
4) After the workpiece is processed, a release button on the control panel 35 is pressed, the servo motor 14 is supplied with reverse current, the first coil 0401 and the second coil 0402 are also supplied with reverse current, the current direction of the third coil 0403 and the fourth coil 0404 is kept unchanged all the time, the magnetic fields generated by the first coil 0401 and the second coil 0402 are opposite to the magnetic fields generated by the third coil 0403 and the fourth coil 0404, and under the action of electromagnetic repulsive force, the first iron core 0301 and the second iron core 0302 drive the left substrate 0701 and the left clamping plate 0501 to move leftwards. The servo motor 14 rotates reversely after reverse current is introduced, the screw rod 11 rotates reversely and drives the right base 0702 and the right clamping plate 0502 to move rightwards, the distance between the left clamping plate 0501 and the right clamping plate 0502 is gradually increased, and the workpiece is gradually loosened. After the left base plate 0701 moves leftwards for a certain distance, the depressed travel switch 19 returns to the original position, the servo motor 14 is powered off, and the right base plate 0702 and the right clamping plate 0502 stop moving. The left base plate 0701 continues to move leftwards under the action of electromagnetic force, the left base plate 0701 drives the U-shaped plate 23 to move leftwards through the hook-shaped plate 22, the U-shaped plate 23 drives the straight rod 27 and the valve core 29 to move leftwards, the relative position between the valve core 29 and the valve sleeve 30 is changed, a throttling channel on the valve core 29 is gradually opened, and the leftwards moving speed of the left base plate 0701 and the left clamping plate 0501 is accelerated.
5) In the process of moving the left base plate 0701 leftwards, when the hook plate 22 is in contact with the first catch 2401, the hook plate 22 rotates under the action of the first catch 2401, the hook plate 22 is separated from the left end face of the left base plate 0701, the hard spring 25 is required to return to the state before being compressed, the left base plate 0701 continues to move leftwards and rapidly under the action of electromagnetic repulsive force and the restoring elasticity of the hard spring 25, and after touching a stop switch, the left base plate 0701 stops moving and returns.
6) And (5) repeating the steps 1) to 5) when the workpiece is required to be clamped again and loosened.
Claims (2)
1. An electromagnetic clamping device, characterized in that: the device comprises a rapid moving system, a fine adjustment clamping system and a control system; the rapid movement system comprises an upper bedplate (0101), a lower bedplate (0102), a left support plate (0201), a right support plate (0202), a first iron core (0301), a second iron core (0302), a third iron core (0303), a fourth iron core (0304), a first coil (0401), a second coil (0402), a third coil (0403), a fourth coil (0404), a left clamping plate (0501), a left base plate (0701), a piston rod (17), a cylinder (18), an electric cabinet (20), a first pressing plate (2101) and a second pressing plate (2102); the first pressing plate (2101) is fixed on the upper platen (0101) through screws, and the first pressing plate (2101) is arranged above the rectangular guide rail of the left clamping plate (0501); the second pressing plate (2102) is fixed on the lower bedplate (0102) through screws, and the second pressing plate (2102) is arranged above the rectangular guide rail of the left baseplate (0701); the cylinder (18) is fixed on the lower bedplate (0102) through screws, the piston rod (17) is installed in the cylinder (18), the left base plate (0701) is rigidly connected with the piston rod (17) through screws, a guide rail below the left base plate (0701) is installed in a chute of the lower bedplate (0102), the upper end of the left base plate (0701) penetrates through a slotted hole of the upper bedplate (0101), the upper end of the left base plate (0701) is rigidly connected with the left clamping plate (0501) through screws, and a guide rail below the left clamping plate (0501) is installed in the chute of the upper bedplate (0101); the right end of the first iron core (0301) passes through a through hole in the left base plate (0701), the first iron core (0301) is fixed on the left base plate (0701) through a screw, the first coil (0401) is installed on the first iron core (0301), the right end of the second iron core (0302) passes through the through hole in the left base plate (0701), the second iron core (0302) is fixed on the left base plate (0701) through the screw, the second coil (0402) is installed on the second iron core (0302), and the first coil (0401) and the second coil (0402) are connected in series; the other ends of the first coil (0401) and the second coil (0402) are respectively connected to the electric cabinet (20), the left end of the third iron core (0303) passes through a through hole in the right support plate (0202), the third iron core (0303) is fixed on the right support plate (0202) through screws, the third coil (0403) is mounted on the third iron core (0303), the left end of the fourth iron core (0304) passes through a through hole in the right support plate (0202), the fourth iron core (0304) is fixed on the right support plate (0202) through screws, the fourth coil (0404) is mounted on the fourth iron core (0304), the third coil (0403) is connected in series with the fourth iron core (0404), and the other ends of the third coil (0403) and the fourth coil (0404) are respectively connected to the electric cabinet (20); the left ends of the upper bedplate (0101) and the lower bedplate (0102) are fixedly connected with the left support plate (0201) through screws respectively, and the right ends of the upper bedplate (0101) and the lower bedplate (0102) are fixedly connected with the right support plate (0202) through screws respectively; the electric cabinet (20) is fixed below the lower bedplate (0102) through screws;
The fine adjustment clamping system comprises a right clamping plate (0502), a first double-end stud (3201), a right base (0702), an end cover (08), a retainer ring (09), a tapered roller bearing (10), a screw rod (11), a coupler (12), an L-shaped bracket (13), a servo motor (14), a bushing (15), a supporting seat (16) and a first pressing plate (2101); the servo motor (14) is fixed on the L-shaped bracket (13) through screws, the L-shaped bracket (13) and the supporting seat (16) are respectively fixed on the upper bedplate (0101) through screws, the bushing (15) is screwed in a screw hole of the supporting seat (16) through threads, and the bushing (15) is fixed on the left end face of the supporting seat (16) through screws; the screw rod (11) is installed on the bushing (15) through threaded connection; the inner ring of the tapered roller bearing (10) is arranged on the outer circle of the left end of the screw rod (11), the outer ring of the tapered roller bearing (10) is arranged in a stepped hole of the right base (0702), the retainer ring (09) is fixed on the outer circle of the left end of the screw rod (11) through screws, the left end stepped end face of the screw rod (11) and the right end of the retainer ring (09) are axially fixed on the inner ring of the tapered roller bearing (10), the end cover (08) is fixed on the left stepped end face of the right base (0702) through screws, the right end face of the end cover (08) is tightly pressed on the outer ring end face of the tapered roller bearing (10), the right end face of the end cover (08) and the stepped end of the right base (0702) are axially fixed on the outer ring of the tapered roller bearing (10), the left end of the first stud (3201) is arranged in a screw hole of the right clamp plate (0502) through a through hole of the right base (0702), and the right end of the first stud (3201) is fixedly connected with the nut (0702) and the right clamp plate (0702) can move relative to the right base (0502); the guide rail below the right base (0702) is arranged in the chute of the upper bedplate (0101); the first pressing plate (2101) is arranged above the rectangular guide rail of the right base (0702); the left end of the coupler (12) is connected with the right end of the screw rod (11) through a spline, and a middle hole at the right end of the coupler (12) is rigidly connected with an output shaft of the servo motor (14);
The control system comprises a pressure sensor (06), a travel switch (19), a hook plate (22), a U-shaped plate (23), a first blocking pin (2401), a second blocking pin (2402), a hard spring (25), a first adjusting nut (2601), a second adjusting nut (2602), a third adjusting nut (2603), a straight rod (27), a guide frame (28), a valve core (29), a valve sleeve (30), a hanging rail (31), a second double-head screw (3202), a first spring pin (3301), a second spring pin (3302), a soft spring (34) and a control panel (35); the travel switch (19) is arranged on the lower bedplate (0102), the travel switch (19) is connected with the electric cabinet (20) through a wire, and the pressure sensor (06) is arranged in a stepped hole of the right base (0702); the valve sleeve (30) is connected with the air cylinder (18) through a pipeline, and the valve sleeve (30) is fixed on the lower bedplate (0102) through a screw; the guide frame (28) is fixed on the lower bedplate (0102) through a screw, the right end of the straight rod (27) is connected with the valve core (29) through threads, a triangular throttling groove is formed in the valve core (29), the valve core (29) is installed in the valve sleeve (30), the left end of the straight rod (27) sequentially penetrates through a middle hole of the guide frame (28), a screw hole of a third adjusting nut (2603), a through hole at the right end of the U-shaped plate (23), a screw hole of a second adjusting nut (2602), a screw hole of a first adjusting nut (2601) and a middle hole of the hard spring (25), the first adjusting nut (2601), the second adjusting nut (2602), the third adjusting nut (2603) and the straight rod (27) are respectively connected through threads, and the straight rod (27) is fixed on the U-shaped plate (23) through the second adjusting nut (2602) and the third adjusting nut (2603); the first stop pin (2401) and the second stop pin (2402) are arranged on the lower bedplate (0102), the hanger rail (31) is fixed below the lower bedplate (0102) through screws, and the U-shaped plate (23) is arranged below the hanger rail (31) through a dovetail groove; the first spring pin (3301) is mounted on the hook-shaped plate (22), the second spring pin (3302) is mounted on the U-shaped plate (23), one end of the soft spring (34) is mounted on the first spring pin (3301), and the other end of the soft spring (34) is mounted on the second spring pin (3302); one end of the second stud (3202) passes through the through hole of the hook plate (22) and is installed on the U-shaped plate (23) through threads, the other end of the second stud (3202) is fixedly connected with a nut, and the hook plate (22) can rotate around the second stud (3202); the U-shaped plate (23) central line bilateral symmetry is being distributed hook plate (22), first backing pin (2401), second backing pin (2402), hanger rail (31), second double-end screw post (3202), first spring pin (3301), second spring pin (3302) and soft spring (34), control panel (35) are in through the fix with screw on last platen (0101), the wire of control panel (35) is connected on electric cabinet (20).
2. An electromagnetic clamping device as claimed in claim 1, wherein: the specific operation steps of the device when in use are as follows:
1) a clamping button on the control panel (35) is pressed, a power supply is connected, a magnetic field generated by electrifying the first coil (0401) and the second coil (0402) is the same as a magnetic field generated by electrifying the third coil (0403) and the fourth coil (0404), and under the action of electromagnetic attraction force, the left base plate (0701) carries the left clamping plate (0501) to move towards the right clamping plate (0502) under the action of the first iron core (0301) and the second iron core (0302); the piston rod (17) is driven by the left base plate (0701) to move rightwards rapidly;
2) The left base plate (0701) rapidly moves rightwards for a certain distance and then contacts the hard spring (25), and the left base plate (0701) pushes the hard spring (25), the straight rod (27) and the valve core (29) to move rightwards; the left base plate (0701) drives the U-shaped plate (23) to move rightwards along the hanger rail (31) through the hard spring (25) and the straight rod (27), and after the U-shaped plate (23) drives the hook-shaped plate (22) to move rightwards for a certain distance, the hook-shaped plate (22) is separated from the first stop pin (2401), and the hook-shaped plate (22) is contacted with the second stop pin (2402); under the action of the second stop pin (2402), the hook plate (22) rotates, the valve core (29) gradually enters the valve sleeve (30) under the pushing of the straight rod (27), the flow area of a throttle valve port between the valve core (29) and the valve sleeve (30) is gradually reduced, the exhaust resistance of a right cavity of the air cylinder (18) is gradually increased, the rightward moving speed of the piston rod (17) is gradually reduced, the speeds of the left base plate (0701) and the left clamp plate (0501) are gradually reduced, the left clamp plate (0501) is contacted with a workpiece after being reduced, the left end of the hook plate (22) is clamped on the left end face of the left base plate (0701), the travel switch (19) is pressed down by the left base plate (0701), a throttle channel on the valve core (29) is completely closed by the valve sleeve (30), gas in the right cavity of the air cylinder (18) cannot be exhausted, and the left base plate (0701) and the left clamp plate (0501) are not moved to the right.
3) After the travel switch (19) is pressed down, the servo motor (14) is electrified to rotate, the servo motor (14) drives the screw rod (11) to rotate through the coupler (12), the screw rod (11) drives the right base (0702) and the right clamping plate (0502) to move leftwards, the right clamping plate (0502) gradually clamps a workpiece, the pressure between the right clamping plate (0502) and the workpiece is gradually increased, the pressure received by the right clamping plate (0502) is transmitted to the pressure sensor (06), when the clamping force between the right clamping plate (0502) and the workpiece reaches a preset value, the pressure sensor (06) is triggered, the pressure sensor (06) feeds back a pressure signal to the electric cabinet (20), the electric cabinet (20) enables the servo motor (14) to stop rotating, the right base (0702) and the right clamping plate (0502) do not move leftwards any more, and the left clamping plate (0501) and the right clamping plate (0502) finish clamping the workpiece;
4) After a workpiece is machined, a loosening button on the control panel (35) is pressed down, a reverse current is introduced into the servo motor (14), the reverse current is introduced into the first coil (0401) and the second coil (0402), a magnetic field generated by the first coil (0401) and the second coil (0402) is opposite to a magnetic field generated by energizing the third coil (0403) and the fourth coil (0404), under the action of electromagnetic repulsive force, the first iron core (0301) and the second iron core (0302) drive the left base plate (0701) and the left clamp plate (0501) to move leftwards, the servo motor (14) is electrified and reversely rotated, the screw rod (11) reversely rotates and drives the right base plate (0702) and the right clamp plate (0502) to move rightwards, the distance between the left clamp plate (0501) and the right clamp plate (0502) is gradually increased, the workpiece is gradually loosened, and after the left base plate (0701) moves leftwards by a certain distance, the switch (19) and the servo motor (0502) stops moving leftwards, and the servo motor (0702) stops; the left base plate (0701) continues to move leftwards under the action of electromagnetic repulsive force, the left base plate (0701) drives the U-shaped plate (23) to move leftwards through the hook-shaped plate (22), the U-shaped plate (23) drives the straight rod (27) and the valve core (29) to move leftwards, the relative position between the valve core (29) and the valve sleeve (30) is changed, a throttling channel on the valve core (29) is gradually opened, and the leftwards moving speed of the left base plate (0701) and the left clamping plate (0501) is accelerated;
5) When the hook plate (22) is in contact with the first stop pin (2401) in the leftward movement process of the left base plate (0701), the hook plate (22) rotates under the action of the first stop pin (2401), the hook plate (22) is separated from the left end face of the left base plate (0701), and the left base plate (0701) continues to move leftwards and is quickly reset under the action of electromagnetic repulsive force and restoring elasticity of the hard spring (25);
6) And (5) repeating the steps 1) to 5) when the workpiece is required to be clamped again and loosened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211423451.7A CN115647884B (en) | 2022-11-15 | 2022-11-15 | Electromagnetic clamping device and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211423451.7A CN115647884B (en) | 2022-11-15 | 2022-11-15 | Electromagnetic clamping device and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115647884A CN115647884A (en) | 2023-01-31 |
| CN115647884B true CN115647884B (en) | 2024-03-22 |
Family
ID=85020506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211423451.7A Active CN115647884B (en) | 2022-11-15 | 2022-11-15 | Electromagnetic clamping device and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115647884B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999020434A1 (en) * | 1997-10-17 | 1999-04-29 | Thyssen Krupp Stahl Ag | Magnetic holding device for blanks made of ferromagnetic sheet steel which are to be welded to one another |
| CN104308209A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Magneto-rheological flexible clamp system and clamping method |
| JP2018172960A (en) * | 2017-02-17 | 2018-11-08 | エス．ピー．ディー． ソチエタ ペル アチオーニ | Rail processing device and processing method |
| CN109318023A (en) * | 2018-12-03 | 2019-02-12 | 燕山大学 | The method and fixture of variable force clamping are carried out using electric control permanent magnet technology |
| CN110125707A (en) * | 2019-05-14 | 2019-08-16 | 上海理工大学 | Magnetorheological grip device for the processing of thin-walled concave curved surface part |
| KR20190125845A (en) * | 2018-04-30 | 2019-11-07 | (주)에이원엔지니어링 | Multi-hole processing apparatus |
| KR102053667B1 (en) * | 2019-06-07 | 2019-12-09 | 진광복 | Jig device for machining spindle head for machine tool |
| CN211387867U (en) * | 2019-12-31 | 2020-09-01 | 浙江精尚数控科技有限公司 | Adjustable electromagnetic clamp for vertical machining center |
| CN113523386A (en) * | 2021-07-20 | 2021-10-22 | 常州肯达工具有限公司 | Clamping device is used in milling cutter processing that antiskid is moved |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021041525A (en) * | 2019-09-11 | 2021-03-18 | アガトン・アクチエンゲゼルシャフト・マシーネンファブリーク | Modular clamp device |
-
2022
- 2022-11-15 CN CN202211423451.7A patent/CN115647884B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999020434A1 (en) * | 1997-10-17 | 1999-04-29 | Thyssen Krupp Stahl Ag | Magnetic holding device for blanks made of ferromagnetic sheet steel which are to be welded to one another |
| CN104308209A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Magneto-rheological flexible clamp system and clamping method |
| JP2018172960A (en) * | 2017-02-17 | 2018-11-08 | エス．ピー．ディー． ソチエタ ペル アチオーニ | Rail processing device and processing method |
| KR20190125845A (en) * | 2018-04-30 | 2019-11-07 | (주)에이원엔지니어링 | Multi-hole processing apparatus |
| CN109318023A (en) * | 2018-12-03 | 2019-02-12 | 燕山大学 | The method and fixture of variable force clamping are carried out using electric control permanent magnet technology |
| CN110125707A (en) * | 2019-05-14 | 2019-08-16 | 上海理工大学 | Magnetorheological grip device for the processing of thin-walled concave curved surface part |
| KR102053667B1 (en) * | 2019-06-07 | 2019-12-09 | 진광복 | Jig device for machining spindle head for machine tool |
| CN211387867U (en) * | 2019-12-31 | 2020-09-01 | 浙江精尚数控科技有限公司 | Adjustable electromagnetic clamp for vertical machining center |
| CN113523386A (en) * | 2021-07-20 | 2021-10-22 | 常州肯达工具有限公司 | Clamping device is used in milling cutter processing that antiskid is moved |
Non-Patent Citations (3)
| Title |
|---|
| 利用钐钴永磁体的夹具设计;张秋源;李汛波;罗世勇;;工具技术;20060228(第02期);第38-41页 * |
| 大直径工件自动定心涨紧夹具设计;姜燕;佟宇;;制造技术与机床;20100802(第08期);第145-147页 * |
| 数控龙门铣边机液压电控磁力夹具设计;邱红;沈印;高朝祥;任小鸿;梁雄;;机床与液压;20130128(第02期);第46、47、50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115647884A (en) | 2023-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203817823U (en) | Universal clamp suitable for clamping plastic mold on multiple pieces of machining equipment | |
| CN101337340A (en) | Clamp | |
| CN109262321B (en) | Flexible clamp based on CNC processing | |
| CN115647884B (en) | Electromagnetic clamping device and use method | |
| CN210231569U (en) | Oblique-pulling type airtight power chuck | |
| US5899464A (en) | Jaw assembly for holding a workpiece | |
| CN212127146U (en) | Multi-axial adjustment rotary worktable | |
| CN212192208U (en) | Self-positioning precise air-oil pressure clamp jig | |
| CN220561564U (en) | Manipulator clamping device | |
| CN219465982U (en) | Flexible clamp for precision machining of parts | |
| CN115256210B (en) | Automatic honing system | |
| CN219325004U (en) | Four-axis connection tool for high-efficiency thrust rod support | |
| CN109848743A (en) | A kind of clamping device for processing steam turbine special substance movable vane piece | |
| CN216028292U (en) | Planer type milling machine | |
| CN217859909U (en) | Tile-shaped chamfering machine | |
| CN221159388U (en) | Adjustable machine tool clamp | |
| CN213858068U (en) | Indexing workbench | |
| CN116810578B (en) | Ceramic core intelligent robot equipment automation anchor clamps of polishing | |
| CN211889952U (en) | Automatic positioning tool | |
| CN220240694U (en) | Anchor clamps are used in CNC lathe processing | |
| CN110315108B (en) | Brake block steel backing drilling equipment | |
| CN218822480U (en) | Automobile sheet metal part checking fixture | |
| CN220837964U (en) | Magnetic positioning device for thin-wall bearing ring vertical lathe | |
| CN219788400U (en) | Workpiece positioning device based on vision photographing robot | |
| CN220547900U (en) | Hydrostatic guideway device and machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |