Rotary clamping and positioning device suitable for accurate grinding of end face of cylindrical spring

Abstract

A rotary clamping and positioning device suitable for accurate grinding of the end face of a cylindrical spring is specially used in equipment for accurate grinding of the end face of the cylindrical spring and comprises a spring clamping and positioning part, a cylindrical spring rotary clamping part, an automatic center height adjusting part, a mounting rack and a spring clamping and positioning device used for clamping and fixing a spring to a positioning V-shaped block. The cylindrical spring rotary clamping device is used for enabling the cylindrical spring to rotate in the grinding process of the spring end face grinding machine tool; the automatic center height adjusting device is used for automatically adjusting the center height of the cylindrical spring rotary clamping device; and the mounting rack is used for mounting the spring clamping and positioning tool, the cylindrical spring rotating and clamping device and the automatic center height adjusting device, so that the spring can be placed on the spring positioning tool for accurate positioning of the spring, and all the devices are firmly supported.

Description

Technical Field

[0001] The invention relates to a rotary clamping and positioning device suitable for fine grinding of the end surface of a cylindrical spring, and belongs to the field of cylindrical spring processing. Background Art

[0002] Cylindrical springs are widely used in the current equipment field. With the advancement of current technology, various mechanical equipment has higher and higher requirements for spring processing accuracy. The processing accuracy of springs directly affects the performance of mechanical equipment. In particular, the cylindrical springs involved in this patent are used in high-precision products. The processing accuracy of springs directly affects the performance and safety of high-precision products. Therefore, the various dimensional tolerances of cylindrical springs are required to be very high. Most of the existing spring end grinding equipment can only meet the requirements of rough grinding of spring ends. Even if a small number of spring end grinding equipment can meet the dimensional tolerance requirements of fine grinding of spring ends, the product failure rate is also high.

[0003] Currently, there is a technology for grinding the end surface of a cylindrical spring disclosed. The disclosed spring grinding machine includes a machine body, a swing frame, a spring clamp, and a swing drive mechanism; the spring clamp is fixed on the swing frame and can fix the cylindrical spring, the swing frame is hingedly connected to the machine body, the swing drive mechanism can drive the swing frame to swing around the hinge axis, and the grinding wheel is rotatably mounted on the machine body through the grinding wheel frame. Through the swing of the swing frame, one end surface of the cylindrical spring fixed on the spring clamp is brought into contact with the grinding surface of the grinding wheel; during the grinding process, the swing drive mechanism causes the swing frame to swing back and forth to complete the repeated grinding of one end surface of the cylindrical spring.

[0004] Although the above-mentioned spring grinding machine can grind the two end faces of the cylindrical spring, the grinding is carried out during the reciprocating swing of the cylindrical spring. During the swinging process, the end face of the cylindrical spring will inevitably have a corresponding jump perpendicular to the grinding end face, resulting in a large deviation in the flatness size of the end face of the cylindrical spring, increasing the verticality error of the end face of the cylindrical spring, and affecting the performance of the cylindrical spring. Summary of the invention

[0005] The technical problem solved by the present invention is: in view of the problem of low machining precision of cylindrical springs on each vertical surface in the current prior art, a rotary clamping and positioning device suitable for fine grinding of the end surface of a cylindrical spring is proposed.

[0006] The present invention solves the above technical problems by the following technical solutions:

[0007] A rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces, comprising a spring clamping and positioning member, a cylindrical spring rotary clamping member, a center height automatic adjusting member, and a mounting frame, wherein:

[0008] The mounting frame includes a mounting base plate, a positioning mounting vertical plate, and a self-adjusting mounting vertical plate. The mounting base plate is provided with a positioning mounting vertical plate and a self-adjusting mounting vertical plate that are perpendicular to each other. The positioning mounting vertical plate is arranged at the edge of one end of the mounting base plate. The self-adjusting mounting vertical plate is arranged perpendicular to the positioning mounting vertical plate, with one end close to the inner side of the positioning mounting vertical plate and the other end close to the edge of the other end of the mounting base plate. A spring clamping positioning member for clamping and adjusting the cylindrical spring to be processed is arranged above the positioning mounting vertical plate, and a center height automatic adjusting member for controlling the processing height of the cylindrical spring to be processed is arranged above the self-adjusting mounting vertical plate. A cylindrical spring rotating clamping member for controlling the rotation of the cylindrical spring during processing is arranged above the top of the center height automatic adjusting member, and maintains the same processing height as the spring clamping positioning member to cooperate with the spring clamping positioning member to complete the positioning and rotation control of the cylindrical spring to be processed.

[0009] The spring clamping positioning member includes a lower clamping positioning block, an upper clamping positioning block, a quick-change block, a clamping connecting plate, a support, a clamping cylinder, and a clamping cylinder, wherein:

[0010] The lower clamping positioning block is fixed above the top plate of the positioning mounting vertical plate by bolts, the upper clamping positioning block is fixedly connected to the clamping connecting plate by a quick-change block, the support is vertically arranged on the top plate, the clamping connecting plate is connected to the support by a first linear guide pair arranged on the side of the support, the clamping cylinder is connected to the top plate by screws, the piston rod of the clamping cylinder is fixedly connected to the clamping connecting plate by a floating joint, and the clamping connecting plate drives the upper clamping positioning block to perform clamping and opening actions from bottom to top under the drive of the clamping cylinder.

[0011] The cylindrical spring rotating clamping member comprises a rotating clamping part and a spring positioning part, wherein the spring positioning part is arranged above the top plate of the center height automatic adjusting member, and the rotating clamping part is used to clamp and rotate the cylindrical spring to be processed;

[0012] The rotating clamping part includes: spring clamping jaws, clamping jaw cylinders, bearing seats, couplings, servo reduction motors, rotating servo motors, clamping base plates, and flange shafts, among which:

[0013] The spring clamp is fixed with the built-in clamp of the clamp cylinder by positioning screws, the clamp cylinder drives the built-in clamp to realize the clamping action of the cylindrical spring, the clamp cylinder is connected with the flange of the flange shaft by screws, the shaft end of the flange shaft is connected with the output shaft of the servo reduction motor by a coupling, the flange shaft is fixed on the clamping base plate, and supported by the bearing seat, the servo reduction motor is fixedly installed with the clamping base plate by the motor bracket, and the clamp cylinder realizes the rotation action under the drive of the servo reduction motor; the rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected with the clamping base plate by a floating joint.

[0014] The bearing seat and the rotary servo motor are used to achieve the radial runout accuracy and axial rotation angle accuracy control requirements of the spring clamp. When the rotary clamp is needed to grasp the cylindrical spring to be processed, the piston rod of the rotary servo motor extends. When the grasping action is completed, the piston rod of the rotary servo motor retracts. The clamping base is installed above the top plate of the center height automatic adjustment part through the second linear guide pair arranged below.

[0015] The spring positioning part includes a spring positioning push rod, a spring push rod push plate, a spring push rod driving cylinder, and a cylinder support, wherein:

[0016] The spring positioning push rod is installed on the spring push rod push plate, the spring push rod push plate is connected to the top plate of the center height automatic adjustment part through the second linear guide pair, the spring push rod driving cylinder is installed on the top plate through the cylinder support, and the driving cylinder is fixedly connected to realize the positioning of the end face of the cylindrical spring to be processed by driving the spring push rod by the driving cylinder.

[0017] The center height automatic adjustment member includes a top plate, a lifting guide wheel, a lifting guide slider, a guide slide plate, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a bottom plate, a third linear guide pair, a ball screw pair, and a servo reduction motor, wherein:

[0018] Four vertical lifting guide shafts are fixedly installed on the inner side of the top plate, and linear rolling movement is realized through the vertical lifting guide shafts and the linear ball bearings fixedly installed on the bottom plate, so that the top plate can be lifted and lowered in the vertical direction; the lifting guide slider is fixedly installed on the guide slide plate, and the guide slide plate is connected to the slider of the third linear motion guide pair arranged on the bottom plate, and the height adjustment servo motor is arranged between the guide slide plate and the bottom plate and installed on the side away from the spring clamping positioning piece; the guide rail of the third linear motion guide pair is fixedly installed on the edge of the self-adjusting mounting vertical plate to ensure that the height adjustment servo motor drives the ball screw to drive the lifting guide slider to make horizontal linear motion.

[0019] Four lifting guide wheels are installed at the bottom of the top plate, and the lifting guide wheels drive the top plate to perform vertical linear motion under the push of the lifting guide slider; a fourth linear guide pair is installed on the self-adjusting mounting plate, and the center height automatic adjustment part is installed on the slider of the fourth linear guide pair through the bottom plate. The servo reduction motor drives the ball screw pair to drive the top plate and the center height adjustment device to perform horizontal linear motion as a whole to realize the action of rotating the cylindrical spring to be processed and grabbing the positioning part to move forward to grab the cylindrical spring placed on the spring clamping positioning part.

[0020] The size information of the installation base plate, the positioning installation vertical plate, and the self-adjusting installation vertical plate is adjusted according to the size information of the cylindrical spring to be processed.

[0021] The upper clamping and positioning blocks and the lower clamping and positioning blocks form a V-shaped structure. The spring clamping and positioning piece fixes the cylindrical spring to be processed to the V-shaped structure, and the self-centering adjustment of the V-shaped structure is used to ensure that the axis of the cylindrical spring to be processed and the V-shaped structure coincide with each other; the cylindrical spring rotating clamp controls the rotation of the cylindrical spring to be processed to improve the verticality and smoothness of the end face of the cylindrical spring, and realizes the spring size tolerance processing requirements of the cylindrical spring to be processed; the center height automatic adjustment piece is used to realize the automatic adjustment of the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamp.

[0022] During the grinding process of the cylindrical spring to be processed, the servo reduction motor and the rotating servo motor of the rotating clamping part, the height adjustment servo motor and the servo reduction motor of the center height automatic adjustment part operate at the same time, ensuring the processing height of the cylindrical spring to be processed and the grinding accuracy of the cylindrical spring to be processed; among them, the clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair, the clamping base plate drives the rotating clamping part to slide on the second linear guide pair, the height adjustment servo motor drives the ball screw to drive the lifting guide slider to slide on the third linear guide pair, and the center height automatic adjustment part slides on the fourth linear guide pair, and each linear guide pair adjusts the setting spacing according to the installation position.

[0023] The advantages of the present invention compared with the prior art are:

[0024] (1) The present invention provides a rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces. The rotary clamping device for springs with automatic center height adjustment eliminates the problem of large verticality error of the cylindrical spring end faces caused by inaccurate spring positioning and vertical jump between the cylindrical spring end faces and the grinding end faces during the grinding movement. The device has the advantages of simple structure, wide adaptability to workpieces, flexible and convenient operation, easy adjustment, and high automation efficiency.

[0025] (2) The present invention clamps and fixes the spring to the positioning V-block through the spring clamping and positioning mechanism, and ensures that the axis of the cylindrical spring and the center plane of the positioning V-block coincide with each other through the self-centering function of the V-block, thereby improving the verticality error between the axis of the cylindrical spring and the grinding end face; at the same time, through the cylindrical spring rotating clamping device, the spring end face grinding machine tool can rotate the cylindrical spring during the grinding process, thereby improving the verticality and smoothness of the cylindrical spring end face and meeting the requirements for the dimensional tolerance of the cylindrical spring, and according to the center height automatic adjustment device, the center height of the cylindrical spring rotating clamping device is automatically adjusted to ensure the accuracy of the rotating clamping and positioning of the cylindrical spring rotating clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces provided by the present invention;

[0027] Figure 2 A schematic diagram of a spring clamping and positioning mechanism provided by the present invention;

[0028] Figure 3 The structure diagram of the spring rotating clamping and positioning device provided by the present invention is as follows: Figure 1 ;

[0029] Figure 4 The structure diagram of the spring rotating clamping and positioning device provided by the present invention is as follows: Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the installation rack structure provided by the present invention. DETAILED DESCRIPTION

[0031] The utility model discloses a rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces, which is a device specially used for fine grinding of cylindrical spring end faces, and comprises a spring clamping and positioning part, a cylindrical spring rotary clamping part, a center height automatic adjustment part, and a mounting frame. The spring clamping and positioning device is used to clamp and fix the spring to a positioning V-block; the cylindrical spring rotary clamping device is used to enable the spring end face grinding machine tool to rotate the cylindrical spring during the grinding process; the center height automatic adjustment device is used to realize automatic adjustment of the center height of the cylindrical spring rotary clamping device; the mounting frame is used to install the spring clamping and positioning tooling, the cylindrical spring rotary clamping device and the center height automatic adjustment device, so as to help place the spring on the spring positioning tooling for accurate positioning of the spring and firmly support each device.

[0032] Applicable to cylindrical spring end surface fine grinding rotary clamping and positioning device:

[0033] The mounting frame includes a mounting base plate, a positioning mounting vertical plate, and a self-adjusting mounting vertical plate. The mounting base plate is provided with a positioning mounting vertical plate and a self-adjusting mounting vertical plate that are perpendicular to each other. The positioning mounting vertical plate is arranged at the edge of one end of the mounting base plate. The self-adjusting mounting vertical plate is arranged perpendicular to the positioning mounting vertical plate, with one end close to the inner side of the positioning mounting vertical plate and the other end close to the edge of the other end of the mounting base plate. A spring clamping positioning member for clamping and adjusting the cylindrical spring to be processed is arranged above the positioning mounting vertical plate, and a center height automatic adjusting member for controlling the processing height of the cylindrical spring to be processed is arranged above the self-adjusting mounting vertical plate. A cylindrical spring rotating clamping member for controlling the rotation of the cylindrical spring during processing is arranged above the top of the center height automatic adjusting member, and maintains the same processing height as the spring clamping positioning member to cooperate with the spring clamping positioning member to complete the positioning and rotation control of the cylindrical spring to be processed.

[0034] The spring clamping positioning part includes a lower clamping positioning block, an upper clamping positioning block, a quick-change block, a clamping connecting plate, a support, a clamping cylinder, and a clamping cylinder, wherein:

[0035] The lower clamping positioning block is fixed above the top plate of the positioning mounting vertical plate by bolts, the upper clamping positioning block is fixedly connected to the clamping connecting plate by a quick-change block, the support is vertically arranged on the top plate, the clamping connecting plate is connected to the support by a first linear guide pair arranged on the side of the support, the clamping cylinder is connected to the top plate by screws, the piston rod of the clamping cylinder is fixedly connected to the clamping connecting plate by a floating joint, and the clamping connecting plate drives the upper clamping positioning block to perform clamping and opening actions from bottom to top under the drive of the clamping cylinder.

[0036] The cylindrical spring rotary clamping part comprises a rotary clamping part and a spring positioning part. The spring positioning part is arranged above the top plate of the center height automatic adjusting part. The rotary clamping part is used to clamp and rotate the cylindrical spring to be processed.

[0037] The rotating clamping part includes: spring clamping jaws, clamping jaw cylinders, bearing seats, couplings, servo reduction motors, rotating servo motors, clamping base plates, and flange shafts, among which:

[0038] The spring clamp is fixed with the built-in clamp of the clamp cylinder by positioning screws, the clamp cylinder drives the built-in clamp to realize the clamping action of the cylindrical spring, the clamp cylinder is connected with the flange of the flange shaft by screws, the shaft end of the flange shaft is connected with the output shaft of the servo reduction motor by a coupling, the flange shaft is fixed on the clamping base plate, and supported by the bearing seat, the servo reduction motor is fixedly installed with the clamping base plate by the motor bracket, and the clamp cylinder realizes the rotation action under the drive of the servo reduction motor; the rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected with the clamping base plate by a floating joint.

[0039] The bearing seat and the rotary servo motor are used to achieve the radial runout accuracy and axial rotation angle accuracy control requirements of the spring clamp. When the rotary clamp is needed to grasp the cylindrical spring to be processed, the piston rod of the rotary servo motor extends. When the grasping action is completed, the piston rod of the rotary servo motor retracts. The clamping base is installed above the top plate of the center height automatic adjustment part through the second linear guide pair arranged below.

[0040] The spring positioning part includes a spring positioning push rod, a spring push rod push plate, a spring push rod driving cylinder, and a cylinder support, wherein:

[0041] The spring positioning push rod is installed on the spring push rod push plate, the spring push rod push plate is connected to the top plate of the center height automatic adjustment part through the second linear guide pair, the spring push rod driving cylinder is installed on the top plate through the cylinder support, and the driving cylinder is fixedly connected to realize the positioning of the end face of the cylindrical spring to be processed by driving the spring push rod by the driving cylinder.

[0042] The center height automatic adjustment part includes a top plate, a lifting guide wheel, a lifting guide slider, a guide slide plate, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a bottom plate, a third linear guide pair, a ball screw pair, and a servo reduction motor, among which:

[0043] Four vertical lifting guide shafts are fixedly installed on the inner side of the top plate, and linear rolling movement is realized through the vertical lifting guide shafts and the linear ball bearings fixedly installed on the bottom plate, so that the top plate can be lifted and lowered in the vertical direction; the lifting guide slider is fixedly installed on the guide slide plate, and the guide slide plate is connected to the slider of the third linear motion guide pair arranged on the bottom plate, and the height adjustment servo motor is arranged between the guide slide plate and the bottom plate and installed on the side away from the spring clamping positioning piece; the guide rail of the third linear motion guide pair is fixedly installed on the edge of the self-adjusting mounting vertical plate to ensure that the height adjustment servo motor drives the ball screw to drive the lifting guide slider to make horizontal linear motion.

[0044] Four lifting guide wheels are installed at the bottom of the top plate, and the lifting guide wheels drive the top plate to perform vertical linear motion under the push of the lifting guide slider; a fourth linear guide pair is installed on the self-adjusting mounting plate, and the center height automatic adjustment part is installed on the slider of the fourth linear guide pair through the bottom plate. The servo reduction motor drives the ball screw pair to drive the top plate and the center height adjustment device to perform horizontal linear motion as a whole, so as to realize the action of rotating the cylindrical spring to be processed and grabbing the positioning part to move forward and grab the cylindrical spring placed on the spring clamping positioning part.

[0045] The size information of the mounting base plate, the positioning mounting vertical plate and the self-adjusting mounting vertical plate is adjusted according to the size information of the cylindrical spring to be processed.

[0046] The upper clamping and positioning blocks and the lower clamping and positioning blocks are V-shaped structures. The spring clamping and positioning pieces fix the cylindrical spring to be processed to the V-shaped structure, and the self-centering adjustment of the V-shaped structure is used to ensure that the axis of the cylindrical spring to be processed and the V-shaped structure coincide with each other; the cylindrical spring rotating clamp controls the rotation of the cylindrical spring to be processed to improve the verticality and smoothness of the end face of the cylindrical spring, and realize the spring size tolerance processing requirements of the cylindrical spring to be processed; the center height automatic adjustment piece is used to realize the automatic adjustment of the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamp.

[0047] During the grinding process of the cylindrical spring to be processed, the servo reduction motor and the rotating servo motor of the rotating clamping part, the height adjustment servo motor and the servo reduction motor of the center height automatic adjustment part operate at the same time, ensuring the processing height of the cylindrical spring to be processed and the grinding accuracy of the cylindrical spring to be processed; among them, the clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair, the clamping base plate drives the rotating clamping part to slide on the second linear guide pair, the height adjustment servo motor drives the ball screw to drive the lifting guide slider to slide on the third linear guide pair, and the center height automatic adjustment part slides on the fourth linear guide pair, and each linear guide pair adjusts the setting spacing according to the installation position.

[0048] The following is further described in conjunction with the accompanying drawings and preferred embodiments of the specification:

[0049] In the current embodiment, it includes: 1. a spring clamping and positioning device, which is used to clamp and fix the spring to the positioning V-block; 2. a cylindrical spring rotating clamping device, which is used to enable the spring end grinding machine to rotate the cylindrical spring during the grinding process; 3. a center height automatic adjustment device, which is used to realize the automatic adjustment of the center height of the cylindrical spring rotating clamping device; 4. an installation frame, which is used to install the spring clamping and positioning tooling, the cylindrical spring rotating clamping device and the center height automatic adjustment device, so as to help place the spring on the spring positioning tooling for accurate positioning of the spring and firmly support each device;

[0050] The rotary clamping and positioning device is suitable for fine grinding of cylindrical spring end faces, comprising: a spring clamping and positioning mechanism 100, a cylindrical spring rotary clamping device 200, a center height automatic adjustment device 300, and a mounting frame 400, which are composed of four parts. Figure 1 The spring clamping and positioning device is shown in Figure 2 As shown, it is used to realize spring fixing, positioning and clamping; the spring clamping and positioning mechanism 100 includes a lower clamping and positioning block fixed to the mounting frame 101 by bolts, an upper clamping and positioning block 103 fixedly connected to the clamping connecting plate 110 by a quick-change block 104, the clamping connecting plate is connected to the support 109 by a linear guide pair, the support 109 is fixed to the mounting frame 101 by bolts, the clamping cylinder 105 is connected to the mounting frame 101 by screws, the piston rod 106 of the clamping cylinder is fixedly connected to the clamping connecting plate 110 by a floating joint 107, and the clamping connecting plate 110 drives the upper clamping and positioning block 103 to perform clamping and opening actions from bottom to bottom under the drive of the clamping cylinder 105. The cylindrical spring rotating clamping and positioning device 200 is shown in FIG. Figure 3 , Figure 4As shown, it includes two parts: cylindrical spring rotation clamping and spring positioning. The spring clamping jaw 201 of the cylindrical spring rotation clamping part is fixed together with the clamping jaw of the clamping jaw cylinder 202 through a positioning screw. The clamping jaw cylinder 202 drives the clamping jaw to realize the clamping action of the cylindrical spring. The clamping jaw cylinder is connected to the flange of the flange shaft 209 through a screw, and the shaft end of the flange shaft 209 is connected to the output shaft of the servo reduction motor 205 through a coupling 204. The flange shaft is rolling supported by a bearing seat 203 fixed on the base plate 207. The servo reduction motor is fixedly installed with the base plate 207 through a motor bracket. The clamping jaw cylinder 202 realizes a rotation action under the drive of the servo reduction motor 205. The radial runout accuracy and axial rotation angle accuracy requirements of the spring clamping jaw 201 are guaranteed by the precision bearing seat 203 and the rotary servo motor 206. The base plate 207 is mounted on the upper mounting plate 301 through a linear guide pair 208, and the rotary grabbing feed cylinder 206 is mounted on the upper mounting plate 207 through a cylinder mounting frame 214. The piston rod of the cylinder 206 is connected to the upper mounting plate 301 through a floating joint 215 and a connecting plate 216. In this way, when the rotating clamp 201 needs to grab the spring, the piston rod of the cylinder 206 extends, and the piston rod of the cylinder 206 retracts when the grabbing action is completed. The spring positioning part of the positioning device 200 for rotating clamping of a cylindrical spring includes a spring positioning push rod 210 installed on a spring push rod push plate 211, and the spring push rod push plate 211 is fixedly connected to the upper mounting plate 301 through a linear guide pair. The driving cylinder 212 of the spring push rod 210 is installed on the upper mounting plate 301 through a cylinder support 213, and the piston rod of the driving cylinder 212 is fixedly connected to the spring push rod push plate 211, thereby realizing the function of positioning the spring end face by driving the spring push rod 210 by the driving cylinder 212. The center height automatic adjustment device 300 includes an upper mounting plate 301 fixedly mounted with four vertical lifting guide shafts 306 and a linear ball bearing fixedly mounted on a lower mounting plate 309 to realize linear rolling movement, thereby ensuring that the upper mounting plate 301 can be lifted and lowered in the vertical direction, thereby ensuring the lifting and lowering movement accuracy; the lifting guide slider 303 is fixedly mounted on the guide slider 304, and the guide slider 304 is connected to the slider of the linear motion guide pair, and the guide rail of the guide pair is fixedly mounted on the mounting base 400, so that the servo motor 305 drives the ball screw 307 to drive the lifting guide slider 303 to perform horizontal linear motion, and four lifting guide wheels are installed at the bottom of the upper mounting plate 301, and the lifting guide wheel 302 drives the upper mounting plate 301 to perform vertical linear motion under the push of the lifting guide slider 303, thereby converting the rotational motion of the servo motor 305 into vertical linear motion of the upper mounting plate 301.The mounting frame 400 is mounted with a linear guide pair 313, and the center height automatic adjustment device is mounted on the slider of the linear motion guide pair 313 through the lower mounting plate 309. The servo reduction motor 312 drives the ball screw pair 311 to drive the upper mounting plate 309 and the center height adjustment device mounted thereon to perform horizontal linear motion, thereby realizing the action of the cylindrical spring rotation grabbing positioning device 200 moving forward to grab the cylindrical spring placed on the spring clamping positioning device. The mounting frame 400 is as follows. Figure 5 As shown, it includes a mounting base plate 401, a positioning mounting vertical plate 402 of a spring clamping positioning mechanism 100, and a self-adjusting mounting vertical plate 403 of a center height automatic adjustment device. Each component of the mounting frame is manufactured through precision machining to ensure the installation accuracy of each actuator.

[0051] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0052] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces, characterized in that: It includes a spring clamping positioning part, a cylindrical spring rotating clamping part, a center height automatic adjusting part, and a mounting frame, wherein: The mounting frame includes a mounting base plate, a positioning mounting vertical plate, and a self-adjusting mounting vertical plate. The mounting base plate is provided with a positioning mounting vertical plate and a self-adjusting mounting vertical plate that are perpendicular to each other. The positioning mounting vertical plate is arranged at the edge of one end of the mounting base plate. The self-adjusting mounting vertical plate is arranged perpendicular to the positioning mounting vertical plate, with one end close to the inner side of the positioning mounting vertical plate and the other end close to the edge of the other end of the mounting base plate. A spring clamping positioning member for clamping and adjusting the cylindrical spring to be processed is arranged above the positioning mounting vertical plate, and a center height automatic adjusting member for controlling the processing height of the cylindrical spring to be processed is arranged above the self-adjusting mounting vertical plate. A cylindrical spring rotating clamping member for controlling the rotation of the cylindrical spring during processing is arranged above the top of the center height automatic adjusting member, and maintains the same processing height as the spring clamping positioning member to cooperate with the spring clamping positioning member to complete the positioning and rotation control of the cylindrical spring to be processed.

2. A rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces according to claim 1, characterized in that: The spring clamping positioning member includes a lower clamping positioning block, an upper clamping positioning block, a quick-change block, a clamping connecting plate, a support, a clamping cylinder, and a clamping cylinder, wherein: The lower clamping positioning block is fixed above the top plate of the positioning mounting vertical plate by bolts, the upper clamping positioning block is fixedly connected to the clamping connecting plate by a quick-change block, the support is vertically arranged on the top plate, the clamping connecting plate is connected to the support by a first linear guide pair arranged on the side of the support, the clamping cylinder is connected to the top plate by screws, the piston rod of the clamping cylinder is fixedly connected to the clamping connecting plate by a floating joint, and the clamping connecting plate drives the upper clamping positioning block to perform clamping and opening actions from bottom to top under the drive of the clamping cylinder.

3. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 1, characterized in that: The cylindrical spring rotating clamping member comprises a rotating clamping part and a spring positioning part, wherein the spring positioning part is arranged above the top plate of the center height automatic adjusting member, and the rotating clamping part is used to clamp and rotate the cylindrical spring to be processed; The rotating clamping part includes: spring clamping jaws, clamping jaw cylinders, bearing seats, couplings, servo reduction motors, rotating servo motors, clamping base plates, and flange shafts, among which: The spring clamp is fixed with the built-in clamp of the clamp cylinder by positioning screws, the clamp cylinder drives the built-in clamp to realize the clamping action of the cylindrical spring, the clamp cylinder is connected with the flange of the flange shaft by screws, the shaft end of the flange shaft is connected with the output shaft of the servo reduction motor by a coupling, the flange shaft is fixed on the clamping base plate, and supported by the bearing seat, the servo reduction motor is fixedly installed with the clamping base plate by the motor bracket, and the clamp cylinder realizes the rotation action under the drive of the servo reduction motor; the rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected with the clamping base plate by a floating joint.

4. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 3, characterized in that: The bearing seat and the rotary servo motor are used to achieve the radial runout accuracy and axial rotation angle accuracy control requirements of the spring clamp. When the rotary clamp is needed to grasp the cylindrical spring to be processed, the piston rod of the rotary servo motor extends. When the grasping action is completed, the piston rod of the rotary servo motor retracts. The clamping base is installed above the top plate of the center height automatic adjustment part through the second linear guide pair arranged below.

5. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 3, characterized in that: The spring positioning part includes a spring positioning push rod, a spring push rod push plate, a spring push rod driving cylinder, and a cylinder support, wherein: The spring positioning push rod is installed on the spring push rod push plate, the spring push rod push plate is connected to the top plate of the center height automatic adjustment part through the second linear guide pair, the spring push rod driving cylinder is installed on the top plate through the cylinder support, and the driving cylinder is fixedly connected to realize the positioning of the end face of the cylindrical spring to be processed by driving the spring push rod by the driving cylinder.

6. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 5, characterized in that: The center height automatic adjustment member includes a top plate, a lifting guide wheel, a lifting guide slider, a guide slide plate, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a bottom plate, a third linear guide pair, a ball screw pair, and a servo reduction motor, wherein: Four vertical lifting guide shafts are fixedly installed on the inner side of the top plate, and linear rolling movement is realized through the vertical lifting guide shafts and the linear ball bearings fixedly installed on the bottom plate, so that the top plate can be lifted and lowered in the vertical direction; the lifting guide slider is fixedly installed on the guide slide plate, and the guide slide plate is connected to the slider of the third linear motion guide pair arranged on the bottom plate, and the height adjustment servo motor is arranged between the guide slide plate and the bottom plate and installed on the side away from the spring clamping positioning piece; the guide rail of the third linear motion guide pair is fixedly installed on the edge of the self-adjusting mounting vertical plate to ensure that the height adjustment servo motor drives the ball screw to drive the lifting guide slider to make horizontal linear motion.

7. A rotary clamping and positioning device suitable for fine grinding of cylindrical spring end faces according to claim 6, characterized in that: Four lifting guide wheels are installed at the bottom of the top plate, and the lifting guide wheels drive the top plate to perform vertical linear motion under the push of the lifting guide slider; a fourth linear guide pair is installed on the self-adjusting mounting plate, and the center height automatic adjustment part is installed on the slider of the fourth linear guide pair through the bottom plate. The servo reduction motor drives the ball screw pair to drive the top plate and the center height adjustment device to perform horizontal linear motion as a whole to realize the action of rotating the cylindrical spring to be processed and grabbing the positioning part to move forward to grab the cylindrical spring placed on the spring clamping positioning part.

8. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 1, characterized in that: The size information of the installation base plate, the positioning installation vertical plate, and the self-adjusting installation vertical plate is adjusted according to the size information of the cylindrical spring to be processed.

9. The rotary clamping and positioning device for fine grinding of cylindrical spring end faces according to claim 7, characterized in that: The upper clamping and positioning blocks and the lower clamping and positioning blocks form a V-shaped structure. The spring clamping and positioning piece fixes the cylindrical spring to be processed to the V-shaped structure, and the self-centering adjustment of the V-shaped structure is used to ensure that the axis of the cylindrical spring to be processed and the V-shaped structure coincide with each other; the cylindrical spring rotating clamp controls the rotation of the cylindrical spring to be processed to improve the verticality and smoothness of the end face of the cylindrical spring, and realizes the spring size tolerance processing requirements of the cylindrical spring to be processed; the center height automatic adjustment piece is used to realize the automatic adjustment of the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamp.

10. The rotary clamping and positioning device for fine grinding of cylindrical spring end surfaces according to claim 7, characterized in that: During the grinding process of the cylindrical spring to be processed, the servo reduction motor and the rotating servo motor of the rotating clamping part, the height adjustment servo motor and the servo reduction motor of the center height automatic adjustment part operate at the same time, ensuring the processing height of the cylindrical spring to be processed and the grinding accuracy of the cylindrical spring to be processed; among them, the clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair, the clamping base plate drives the rotating clamping part to slide on the second linear guide pair, the height adjustment servo motor drives the ball screw to drive the lifting guide slider to slide on the third linear guide pair, and the center height automatic adjustment part slides on the fourth linear guide pair, and each linear guide pair adjusts the setting spacing according to the installation position.

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