High-speed and High-precision Servo Power Chuck System

Abstract

The present invention discloses a high-speed and high-precision servo power chuck system, which includes a power mechanism, a transmission mechanism and a chuck fixture. The system converts the forward and reverse rotational motion of the motor shaft into the reciprocating linear motion of a pull rod through a transmission system, and then drives the automatic clamping and opening of the jaws through the reciprocating motion of the pull rod, so as to simultaneously and precisely control the clamping force and clamping displacement of the jaws, ensure that the clamping force is constant at different rotational speeds of the chuck, meet the requirements of repeated operation clamping precision, achieve high clamping efficiency and high-speed cutting requirements, and improve the reliability of the operation of the high-chuck system. In addition, by embedding a pull rod joint inside the mechanism of the servo chuck, it is convenient for the matching connection between the chuck and the pull rod, improves the versatility of the chuck. When installing the chuck, different specifications of pull rod joints can be replaced to facilitate the matching connection with pull rods of different specifications, so as to meet the use of the servo chuck on different machine tools, and the installation is convenient and the operation is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of servo chucks, and in particular to a high-speed and high-precision servo power chuck system. Background Art

[0002] A chuck is a mechanical device used to clamp a workpiece on a machine tool. It is a machine tool accessory that uses the radial movement of the movable jaws evenly distributed on the chuck body to clamp and position the workpiece. Based on the power used, it can be divided into: manual chuck, pneumatic chuck, hydraulic chuck, electric chuck and mechanical chuck.

[0003] The existing mechanical chucks for CNC lathes have certain drawbacks when in use. First: the chuck can only control the clamping force of the jaws, but cannot control the clamping force and displacement of the jaws at the same time. It is not easy to directly clamp thin-walled parts, and the hydraulic power chuck cannot ensure that the clamping force of the chuck is constant at different rotation speeds. Secondly, the hydraulic power chuck also has defects such as high heat generation, high energy consumption, low efficiency, high noise, and the rotary hydraulic cylinder is prone to oil leakage and environmental pollution. In addition, the chuck is not suitable for connection and installation with pull rods of different diameters, resulting in poor versatility of the chuck, and the chuck structure is relatively complex, and the installation is time-consuming and labor-intensive. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a high-speed and high-precision servo power chuck system, which converts the positive and reverse rotational motion of the motor shaft into the reciprocating linear motion of the pull rod, and then drives the automatic clamping and opening of the clamping jaws through the reciprocating motion of the pull rod, so as to achieve simultaneous and precise control of the clamping force and clamping displacement of the clamping jaws, ensure that the clamping force of the chuck is constant at different rotation speeds, achieve the clamping accuracy requirements of repeated operations, achieve high clamping efficiency and high-speed cutting requirements, and improve the reliability of the high chuck system.

[0005] The present invention provides a high-speed and high-precision servo power chuck system, comprising a power mechanism, a transmission mechanism and a chuck fixture, wherein:

[0006] The power mechanism comprises a servo motor, a power output end of the servo motor is connected to a coupling, and the coupling is connected to a reducer;

[0007] The transmission mechanism includes a coupling, one end of which is connected to the power output end of the reducer, and the other end of the coupling is connected to the screw, which is equipped with a screw nut, and the screw nut is equipped with a connecting piece, and the other end of the connecting piece is connected to the pull rod; a sleeve is mounted on the connecting piece, and an end cover is mounted on the end side of the sleeve, a first bearing is mounted between the connecting piece and the sleeve, and a first nut is mounted on the end side of the first bearing; a transmission cylinder is mounted outside the sleeve and the end cover, a second bearing is mounted between the sleeve and the coupling, and a second nut is mounted on the end side of the second bearing; a right outer sleeve is mounted outside the transmission cylinder, a third bearing is mounted between the transmission cylinder and the right outer sleeve, a third nut is mounted on the end side of the third bearing, a pressure cover is mounted on the end side of the right outer sleeve, and the other end of the right end cover is connected to the main shaft of the machine tool.

[0008] The chuck fixture includes a disc body, a wedge-shaped sleeve, a rear cover, a pull rod joint, a flange, a sliding seat, a slider and a soft claw. The disc body is a cylindrical disc, a circular groove is provided on the rear end side of the disc body, and three T-shaped grooves are evenly radially provided on the front end side of the disc body; the wedge-shaped sleeve is fitted in the circular groove, a rear cover mounting groove is provided in the middle of the wedge-shaped sleeve, a first joint mounting hole is provided in the rear cover mounting groove, and three wedge-shaped grooves are provided on the outer wall of the wedge-shaped sleeve; the rear cover is fitted in the rear cover mounting groove, the rear cover is disc-shaped, and a second joint mounting hole is provided in the center of the rear cover; the pull rod joint is installed in the first joint mounting hole and the second joint mounting hole , and use the first screw to connect the tie rod joint with the wedge core sleeve, the tie rod joint is cylindrical, and a tie rod mounting hole is provided in the center of the tie rod joint; the flange is installed on the rear end side of the rear cover by the second screw; there are three slide seats, and the slide seat includes a T-shaped seat, a wedge-shaped seat is provided at the bottom of the T-shaped seat, a T-shaped slide groove is provided in the T-shaped seat, the T-shaped seat is fitted in the T-shaped groove, and the wedge-shaped seat is fitted in the wedge groove; there are three sliders, and the sliders are respectively fitted in the T-shaped slide grooves, and the cross-section of the slider is T-shaped; there are three soft claws, and the soft claws are rectangular, and the soft claws are respectively installed on the sliders by using the third screws.

[0009] Preferably, the servo motor is connected to a first reducer barrel, the other end of the first reducer barrel is connected to a second reducer barrel, the coupling is arranged in the first reducer barrel, and the two ends of the reducer are respectively arranged in the first reducer barrel and the second reducer barrel.

[0010] Preferably, one end of the transmission barrel is connected to the second reducer barrel.

[0011] Preferably, a mounting hole is provided on the surface of the transmission cylinder, and the cylinder is fixed to the machine tool bed through the mounting hole.

[0012] Preferably, the connecting member includes a large diameter end and a small diameter end, the large diameter end is mounted on the screw nut, the outside of the large diameter end is mounted with a first bearing, the inside of the small diameter end is mounted with a pull rod, and the outside of the small diameter end is mounted with a right outer sleeve.

[0013] Preferably, the disk body is provided with a first bolt hole, the outer wall of the wedge sleeve is provided with a second bolt hole groove, and the flange is provided with a third bolt hole. The bolts pass through the first bolt hole, the second bolt hole groove and the third bolt hole to connect the disk body, the wedge sleeve and the flange as a whole.

[0014] Preferably, the tie rod joint is provided with a first connecting hole, the wedge core sleeve is provided with a second connecting hole, and the first screw connects the tie rod joint and the wedge core sleeve through the first connecting hole and the second connecting hole.

[0015] Preferably, a third connecting hole is provided on the rear cover, a fourth connecting hole is provided on the flange, and the second screw passes through the third connecting hole and the fourth connecting hole to install the flange on the rear end side of the rear cover.

[0016] Preferably, the slider is provided with a fifth connecting hole, the soft claw is provided with a sixth connecting hole, and the third screw passes through the fifth connecting hole and the sixth connecting hole to respectively install the soft claw on the slider.

[0017] Preferably, the front end surface of the T-shaped seat is provided with a first anti-slip tooth, the rear end surface of the soft claw is provided with a second anti-slip tooth, and the first anti-slip tooth is contact-fitted with the second anti-slip tooth.

[0018] Working principle of the present invention: The present invention provides a high-speed and high-precision servo power chuck system, including a power mechanism, a transmission mechanism and a chuck fixture. When the high-speed and high-precision servo power chuck system of the present invention is working, the servo motor is controlled by the CNC machine tool to send pulses, and the servo motor drives the reducer to rotate, and then drives the screw to rotate, thereby driving the screw nut to make linear motion along the axial direction, thereby driving the pull rod to make linear reciprocating motion. In the chuck fixture structure, the wedge core sleeve, the back cover and the pull rod joint are connected together as a trigger mechanism. The pull rod joint is connected to the pull rod. When working, the reciprocating linear motion of the pull rod drives the trigger mechanism to reciprocate, and the slide seat repeatedly completes the clamping and loosening actions under the guidance of the wedge groove of the wedge core sleeve. This device converts the forward and reverse rotation of the servo motor into the linear reciprocating motion of the pull rod, and drives the clamping and loosening of the chuck claws through the reciprocating motion of the pull rod, such as: the servo motor drives the reducer to rotate forward, the reducer drives the screw rod to move linearly, the pull rod is the pulling force, and the chuck is clamped; the servo motor drives the reducer to reverse, the screw rod moves linearly, the pull rod is the thrust, and the chuck is loosened. In this power device:

[0019] Two mounting holes are processed on the surface of the transmission barrel, and the barrel is fixed to the machine bed through the mounting holes. This is to fix the barrel to the machine bed and prevent the servo motor from partially rotating under the action of the third bearing;

[0020] Because the inner diameter of the machine tool spindle is small, a connecting piece is needed for transition. Because this system needs to withstand a large unilateral pulling force, three first bearings are used to withstand the large unilateral pulling force. A tie rod of appropriate thickness is selected according to the diameter of the machine tool spindle and used in conjunction with the connecting piece. The other end of the tie rod is connected to the chuck side.

[0021] Because this system has a large pulling force, but the reducer cannot withstand the pulling force, a coupling should be added between the reducer and the screw, and this coupling needs to be able to withstand part of the pulling force, so two second bearings are added to the coupling to withstand part of the pulling force;

[0022] Since the right outer sleeve is connected to the machine tool spindle, and the machine tool spindle will rotate at a certain speed when the workpiece is cut, it is necessary to design a dynamic and static device, that is, to add a third bearing in the right outer sleeve to ensure that when the machine tool spindle rotates, the servo motor connected to the right outer sleeve will not rotate with it.

[0023] Beneficial effects of the present invention: The high-speed and high-precision servo-powered chuck system of the present invention converts the forward and reverse rotational motion of the motor shaft into the reciprocating linear motion of the pull rod through the transmission system, and then drives the automatic clamping and opening of the claws through the reciprocating motion of the pull rod, so as to achieve simultaneous and precise control of the clamping force and clamping displacement of the claws, ensure the constant clamping force of the chuck at different rotation speeds, achieve the clamping accuracy requirements of repeated operations, achieve high clamping efficiency and high-speed cutting requirements, and improve the reliability of the high chuck system. In addition, the high-speed and high-precision servo-powered chuck system of the present invention facilitates the matching connection between the chuck and the pull rod by embedding a pull rod joint inside the mechanism of the servo chuck, thereby improving the versatility of the chuck. When the chuck is installed, it can be matched and connected with pull rods of different specifications by replacing pull rod joints of different specifications, so as to meet the use of the servo chuck on different machine tools, and is easy to install and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axial cross-sectional view of the power mechanism and the transmission mechanism in the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of the transmission mechanism;

[0026] Figure 3 It is a front view of the chuck fixture of the present invention;

[0027] Figure 4 for Figure 5 Sectional view along AA;

[0028] Figure 5 An exploded view of the chuck fixture of the present invention;

[0029] Figure 6 for Figure 5Stereoscopic view of the middle plate body I;

[0030] Figure 7 for Figure 5 Stereoscopic view of the middle disc II;

[0031] Figure 8 for Figure 5 Stereoscopic view of the middle wedge core sleeve I;

[0032] Fig. 9 for Figure 5 Stereoscopic view of the middle wedge core set II;

[0033] Fig.10 for Figure 5 A perspective view of the middle back cover I;

[0034] Fig.11 for Figure 5 Stereoscopic view of the middle back cover II;

[0035] Fig.12 for Figure 5 A perspective view of the middle tie rod joint;

[0036] Fig.13 for Figure 5 A three-dimensional view of the middle flange;

[0037] Fig.14 for Figure 5 A perspective view of the middle slide seat I;

[0038] Fig.15 for Figure 5 Stereoscopic view of the middle slide II;

[0039] Fig.16 for Figure 5 A three-dimensional view of the middle slider;

[0040] Fig.17 for Figure 5 A three-dimensional view of the medium soft jaw.

[0041] In the figure:

[0042] Power mechanism 1, servo motor 101, coupling 102, reducer 103, first reducer barrel 104, second reducer barrel 105;

[0043] Transmission mechanism 2, coupling 201, screw 202, screw nut 203, connector 204, large diameter end 204-1, small diameter end 204-2, pull rod 205, sleeve 206, end cover 207, first bearing 208, first nut 209, transmission cylinder 210, second bearing 211, second nut 212, right outer sleeve 213, third bearing 214, third nut 215, gland 216;

[0044] Chuck fixture 3, disc body 301, circular groove 301-1, T-shaped groove 301-2, first bolt hole 301-3; wedge core sleeve 302, rear cover mounting groove 302-1, first joint mounting hole 302-2, wedge groove 302-3, second bolt hole groove 302-4, second connecting hole 302-5; rear cover 303, second joint mounting hole 303-1, third connecting hole 303-2; tie rod joint 304, tie rod mounting hole 304-1, first connecting hole 3 04-2; flange 305, third bolt hole 305-1, fourth connecting hole 305-2; sliding seat 306, T-shaped seat 306-1, wedge-shaped seat 306-2, T-shaped slide groove 306-3, first anti-slip tooth 306-4; sliding block 307, fifth connecting hole 307-1; soft claw 308, sixth connecting hole 308-1, second anti-slip tooth 308-2; first screw 309; second screw 3010; third screw 3011; bolt 3012. DETAILED DESCRIPTION

[0045] In order to make the technical solution of the present invention easier to understand, the technical solution of the present invention is now clearly and completely described in the form of specific embodiments in conjunction with the accompanying drawings.

[0046] Embodiment 1:

[0047] like Figures 1 to 17 As shown, the high-speed and high-precision servo power chuck system of this embodiment includes a power mechanism 1, a transmission mechanism 2 and a chuck fixture 3, wherein:

[0048] The power mechanism 1 includes a servo motor 101, a power output end of the servo motor 101 is connected to a coupling 102, and the coupling 102 is connected to a reducer 103;

[0049] The transmission mechanism 2 includes a coupling 201, one end of which is connected to the power output end of the reducer 103, and the other end of the coupling 201 is connected to a screw 202, a screw nut 203 is mounted on the screw 202, a connecting piece 204 is mounted on the screw nut 203, and the other end of the connecting piece 204 is connected to a pull rod 205; a sleeve 206 is sleeved on the connecting piece 204, an end cover 207 is mounted on the end side of the sleeve 206, a first bearing 208 is mounted between the connecting piece 204 and the sleeve 206, and the first bearing 208 The first nut 209 is mounted on the end side; the transmission cylinder 210 is mounted outside the shaft sleeve 206 and the end cover 207, the second bearing 211 is mounted between the shaft sleeve 206 and the coupling 201, and the second nut 212 is mounted on the end side of the second bearing 211; the right outer cover 213 is mounted on the outer side of the transmission cylinder 210, the third bearing 214 is mounted between the transmission cylinder 210 and the right outer cover 213, the third nut 215 is mounted on the end side of the third bearing 214, the right outer cover 213 is mounted on the end side of the right outer cover 216, and the other end of the right end cover 207 is connected to the main shaft of the machine tool;

[0050] The chuck fixture 3 includes a disc body 301, a wedge core sleeve 302, a rear cover 303, a tie rod joint 304, a flange 305, a slide seat 306, a slider 307 and a soft clamping claw 308. The disc body 301 is a cylindrical disc, and a circular groove 301-1 is provided on the rear end side of the disc body 301, and three T-shaped grooves 301-2 are uniformly radially provided on the front end side of the disc body 301; the wedge core sleeve 302 is fitted in the circular groove 301-1, and a rear portion of the wedge core sleeve 302 is provided in the middle. The back cover 303 is mounted in the back cover mounting groove 302-1, and a first joint mounting hole 302-2 is provided in the back cover mounting groove 302-1. The outer wall of the wedge core sleeve 302 is provided with three wedge-shaped grooves 302-3; the back cover 303 is mounted in the back cover mounting groove 302-1, the back cover 303 is disc-shaped, and a second joint mounting hole 303-1 is provided in the center of the back cover 303; the tie rod joint 304 is installed in the first joint mounting hole 302-2 and the second joint mounting hole 303-1 , and the tie rod joint 304 is connected to the wedge core sleeve 302 by a first screw 309. The tie rod joint 304 is cylindrical, and a tie rod mounting hole 304-1 is provided in the center of the tie rod joint 304; the flange 305 is installed on the rear end side of the rear cover 303 by a second screw 3010; the slide seat 306 is three, and the slide seat 306 includes a T-shaped seat 306-1, and a wedge seat 306-2 is provided at the bottom of the T-shaped seat 306-1. A T-shaped slot 306-3 is provided inside, the T-shaped seat 306-1 is mounted in the T-shaped slot 301-2, and the wedge-shaped seat 306-2 is mounted in the wedge-shaped slot 302-3; there are three sliders 307, and the sliders 307 are respectively mounted in the T-shaped slots 306-3, and the cross-section of the sliders 307 is T-shaped; there are three soft claws 308, and the soft claws 308 are rectangular parallelepiped, and the soft claws 308 are respectively installed on the sliders 307 using the third screws 3011.

[0051] Embodiment 2:

[0052] like Figures 1 to 17 As shown, the high-speed and high-precision servo power chuck system of this embodiment includes a power mechanism 1, a transmission mechanism 2 and a chuck fixture 3, wherein:

[0053] The power mechanism 1 includes a servo motor 101, the power output end of the servo motor 101 is connected to a coupling 102, and the coupling 102 is connected to a reducer 103; the servo motor 101 is connected to a first reducer barrel 104, the other end of the first reducer barrel 104 is connected to a second reducer barrel 105, the coupling 102 is arranged in the first reducer barrel 104, and the two ends of the reducer 103 are respectively arranged in the first reducer barrel 104 and the second reducer barrel 105;

[0054] The transmission mechanism 2 includes a coupling 201, one end of which is connected to the power output end of the reducer 103, and the other end of the coupling 201 is connected to a screw 202, a screw nut 203 is mounted on the screw 202, a connecting piece 204 is mounted on the screw nut 203, and the other end of the connecting piece 204 is connected to a pull rod 205; a sleeve 206 is sleeved on the connecting piece 204, an end cover 207 is mounted on the end side of the sleeve 206, a first bearing 208 is mounted between the connecting piece 204 and the sleeve 206, and a first nut 209 is mounted on the end side of the first bearing 208; a transmission sleeve 210 is mounted outside the sleeve 206 and the end cover 207, a second bearing 211 is mounted between the sleeve 206 and the coupling 201, and a second nut 212 is mounted on the end side of the second bearing 211; the transmission sleeve 2 A right outer sleeve 213 is arranged on the outer sleeve 10, a third bearing 214 is arranged between the transmission sleeve 210 and the right outer sleeve 213, a third nut 215 is arranged on the end side of the third bearing 214, a pressure cover 216 is arranged on the end side of the right outer sleeve 213, and the other end of the right end cover 207 is connected to the main shaft of the machine tool; one end of the transmission sleeve 210 is connected to the second reducer sleeve 105; a mounting hole is arranged on the surface of the transmission sleeve 210, and the sleeve is fixed to the machine tool bed through the mounting hole; the connecting member 204 includes a large diameter end 204-1 and a small diameter end 204-2, the large diameter end 204-1 is arranged on the screw nut 203, the outer side of the large diameter end 204-1 is arranged with a first bearing 208, the inner side of the small diameter end 204-2 is arranged with a pull rod 205, and the outer side of the small diameter end 204-2 is arranged with a right outer sleeve 213;

[0055] The chuck fixture 3 includes a disc body 301, a wedge core sleeve 302, a back cover 303, a pull rod joint 304, a flange 305, a slide seat 306, a slider 307 and a soft clamping claw 308. The disc body 301 is a cylindrical disc, and a circular groove 301-1 is provided on the rear end side of the disc body 301, and three T-shaped grooves 301-2 are evenly radially provided on the front end side of the disc body 301; the wedge core sleeve 302 is fitted in the circular groove 301-1, a back cover mounting groove 302-1 is provided in the middle of the wedge core sleeve 302, a first joint mounting hole 302-2 is provided in the back cover mounting groove 302-1, and three wedge-shaped grooves 302-3 are provided on the outer wall of the wedge core sleeve 302; the back cover 303 is fitted in the back cover mounting groove 302-1, The rear cover 303 is disc-shaped, and a second joint mounting hole 303-1 is provided in the center of the rear cover 303; the tie rod joint 304 is installed in the first joint mounting hole 302-2 and the second joint mounting hole 303-1, and the tie rod joint 304 is connected to the wedge core sleeve 302 by a first screw 309. The tie rod joint 304 is cylindrical, and a tie rod mounting hole 304-1 is provided in the center of the tie rod joint 304; the flange 305 is installed on the rear end side of the rear cover 303 by a second screw 3010; the slide seat 306 is three, and the slide seat 306 includes a T-shaped seat 306-1, a wedge-shaped seat 306-2 is provided at the bottom of the T-shaped seat 306-1, and a T-shaped slide groove 30 is provided in the T-shaped seat 306-1 6-3, the T-shaped seat 306-1 is mounted in the T-shaped slot 301-2, and the wedge-shaped seat 306-2 is mounted in the wedge-shaped slot 302-3; there are three sliders 307, and the sliders 307 are respectively mounted in the T-shaped slots 306-3, and the cross section of the slider 307 is T-shaped; there are three soft claws 308, and the soft claws 308 are rectangular parallelepiped, and the soft claws 308 are respectively mounted on the sliders 307 by using third screws 3011; the disk body 301 is provided with a first bolt hole 301-3, the outer wall of the wedge core sleeve 302 is provided with a second bolt hole groove 302-4, and the flange 305 is provided with a third bolt hole 305-1, and the bolt 3012 passes through the first bolt hole 301-3 and the second bolt hole The groove 302-4 and the third bolt hole 305-1 connect the plate body 301, the wedge core sleeve 302 and the flange 305 together; the tie rod joint 304 is provided with a first connecting hole 304-2, the wedge core sleeve 302 is provided with a second connecting hole 302-5, and the first screw 309 passes through the first connecting hole 304-2 and the second connecting hole 302-5 to connect the tie rod joint 304 with the wedge core sleeve 302; the rear cover 303 is provided with a third connecting hole 303-2, the flange 305 is provided with a fourth connecting hole 305-2, and the second screw 3010 passes through the third connecting hole 303-2 and the fourth connecting hole 305-2 to install the flange 305 on the rear end side of the rear cover 303;The slider 307 is provided with a fifth connection hole 307-1, the soft claw 308 is provided with a sixth connection hole 308-1, and the third screw 3011 passes through the fifth connection hole 307-1 and the sixth connection hole 308-1 to respectively install the soft claw 308 on the slider 307; the front end surface of the T-shaped seat 306-1 is provided with a first anti-slip tooth 306-4, and the rear end surface of the soft claw 308 is provided with a second anti-slip tooth 308-2, and the first anti-slip tooth 306-4 is contacted and assembled with the second anti-slip tooth 308-2. ;

[0056] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that can be thought of by ordinary technicians in this field without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A high-speed and high-precision servo power chuck system, characterized in that, it includes a power mechanism (1), a transmission mechanism (2) and a chuck fixture (3), wherein: The power mechanism (1) includes a servo motor (101), the power output end of the servo motor (101) is connected to a coupling (102), and the coupling (102) is connected to a reducer (103); The transmission mechanism (2) includes a coupling (201), one end of the coupling (201) is connected to the power output end of the reducer (103), the other end of the coupling (201) is connected to a lead screw (202), a lead screw nut (203) is fitted on the lead screw (202), a connecting member (204) is fitted on the lead screw nut (203), and the other end of the connecting member (204) is connected to a pull rod (205); a bushing (206) is sleeved on the connecting member (204), an end cover (207) is fitted on the side of the bushing (206), a first bearing (208) is fitted between the connecting member (204) and the bushing (206), and a first nut (209) is fitted on the side of the first bearing (208); a transmission cylinder (210) is fitted outside the bushing (206) and the end cover (207), a second bearing (211) is fitted between the bushing (206) and the coupling (201), and a second nut (212) is fitted on the side of the second bearing (211); a right outer sleeve (213) is sleeved outside the transmission cylinder (210), a third bearing (214) is fitted between the transmission cylinder (210) and the right outer sleeve (213), a third nut (215) is fitted on the side of the third bearing (214), a gland (216) is fitted on the side of the right outer sleeve (213), and the other end of the right end cover (207) is connected to the machine tool spindle; The chuck fixture (3) includes a disk body (301), a wedge core sleeve (302), a rear cover (303), a pull rod joint (304), a flange plate (305), a slide base (306), a slide block (307) and soft jaws (308). The disk body (301) is a cylindrical disk. A circular groove (301-1) is provided on the rear end side of the disk body (301), and three T-shaped grooves (301-2) are evenly and radially provided on the front end side of the disk body (301). The wedge core sleeve (302) is fitted in the circular groove (301-1). A rear cover installation groove (302-1) is provided in the middle of the wedge core sleeve (302). A first joint installation hole (302-2) is provided in the rear cover installation groove (302-1). Three wedge-shaped grooves (302-3) are provided on the outer wall of the wedge core sleeve (302). The rear cover (303) is fitted in the rear cover installation groove (302-1). The rear cover (303) is a disk-shaped. A second joint installation hole (303-1) is provided at the center of the rear cover (303). The pull rod joint (304) is installed in the first joint installation hole (302-2) and the second joint installation hole (303-1), and the pull rod joint (304) is connected to the wedge core sleeve (302) by a first screw (309). The pull rod joint (304) is cylindrical. A pull rod installation hole (304-1) is provided at the center of the pull rod joint (304). The flange plate (305) is installed on the rear end side of the rear cover (303) by a second screw (3010). There are three slide bases (306). The slide base (306) includes a T-shaped seat (306-1). A wedge-shaped seat (306-2) is provided at the bottom of the T-shaped seat (306-1). A T-shaped sliding groove (306-3) is provided in the T-shaped seat (306-1). The T-shaped seat (306-1) is fitted in the T-shaped groove (301-2), and the wedge-shaped seat (306-2) is fitted in the wedge-shaped groove (302-3). There are three slide blocks (307). The slide blocks (307) are respectively fitted in the T-shaped sliding grooves (306-3). The cross section of the slide block (307) is T-shaped. There are three soft jaws (308). The soft jaws (308) are cuboid, and the soft jaws (308) are respectively installed on the slide blocks (307) by a third screw (3011). A first reducer barrel (104) is connected to the servo motor (101). The other end of the first reducer barrel (104) is connected to a second reducer barrel (105). A coupling (102) is provided in the first reducer barrel (104). Both ends of the reducer (103) are respectively provided in the first reducer barrel (104) and the second reducer barrel (105). The connecting piece (204) includes a large-diameter end (204-1) and a small-diameter end (204-2). The large-diameter end (204-1) is fitted on the lead screw nut (203). A first bearing (208) is fitted on the outside of the large-diameter end (204-1). A pull rod (205) is fitted in the small-diameter end (204-2). A right outer sleeve (213) is fitted on the outside of the small-diameter end (204-2).

2. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that One end of the transmission bobbin (210) is connected to the second reducer bobbin (105).

3. The high-speed and high-precision servo power chuck system according to claim 2, characterized in that, mounting holes are provided on the surface of the transmission bobbin (210), and the bobbin is fixed to the machine tool bed through the mounting holes.

4. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that, a first bolt hole (301-3) is provided on the disc body (301), a second bolt hole groove (302-4) is provided on the outer wall of the wedge core sleeve (302), a third bolt hole (305-1) is provided on the flange (305), and a bolt (3012) passes through the first bolt hole (301-3), the second bolt hole groove (302-4) and the third bolt hole (305-1) to connect the disc body (301), the wedge core sleeve (302) and the flange (305) together.

5. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that, a first connection hole (304-2) is provided on the pull rod joint (304), a second connection hole (302-5) is provided on the wedge core sleeve (302), and a first screw (309) passes through the first connection hole (304-2) and the second connection hole (302-5) to connect the pull rod joint (304) and the wedge core sleeve (302).

6. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that, a third connection hole (303-2) is provided on the rear cover (303), a fourth connection hole (305-2) is provided on the flange (305), and a second screw (3010) passes through the third connection hole (303-2) and the fourth connection hole (305-2) to mount the flange (305) on the rear end side of the rear cover (303).

7. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that, a fifth connection hole (307-1) is provided on the slider (307), a sixth connection hole (308-1) is provided on the soft jaw (308), and a third screw (3011) passes through the fifth connection hole (307-1) and the sixth connection hole (308-1) to mount the soft jaw (308) on the slider (307) respectively.

8. The high-speed and high-precision servo power chuck system according to claim 1, characterized in that, a first anti-slip tooth (306-4) is provided on the front end face of the T-shaped seat (306-1), a second anti-slip tooth (308-2) is provided on the rear end face of the soft jaw (308), and the first anti-slip tooth (306-4) is in contact and fitted with the second anti-slip tooth (308-2).

Images