A rotary clamping positioning device suitable for end face fine grinding of cylindrical springs

Abstract

A kind of end face precision grinding rotary clamping positioning device suitable for cylindrical spring, it is specially used in the equipment of cylindrical spring end face precision grinding, including spring clamping positioning piece, cylindrical spring rotary clamping piece, center height automatic adjusting piece, installation rack, spring clamping positioning device, for spring clamping fixation to positioning V-shaped block;Cylindrical spring rotary clamping device, for realizing that spring end face grinding machine tool can rotate cylindrical spring in grinding process;Center height automatic adjusting device, for realizing automatic adjustment of cylindrical spring rotary clamping device center height;Installation rack, for installing spring clamping positioning tool, cylindrical spring rotary clamping device and center height automatic adjusting device, to help spring to be placed to spring positioning tool for the accurate positioning of spring, firmly support each device.

Description

A rotary clamping and positioning device suitable for precision grinding of cylindrical spring end faces Technical Field

[0001] This invention relates to a rotary clamping and positioning device suitable for precision grinding of the end face of a cylindrical spring, belonging to the field of cylindrical spring processing. Background Technology

[0002] Cylindrical springs are widely used in current equipment manufacturing. With the advancement of technology, the requirements for spring machining accuracy in various mechanical equipment are becoming increasingly stringent, as the machining accuracy of springs directly affects the performance of mechanical equipment. This is especially true for the cylindrical springs involved in this patent, which are used in high-precision products. The machining accuracy of the springs directly impacts the performance and safety of these products; therefore, the dimensional tolerances of cylindrical springs are extremely high. Most existing spring end-face grinding equipment can only meet the needs of rough grinding of spring end faces. Even if a small portion of spring end-face grinding equipment can meet the dimensional tolerance requirements of fine grinding of spring end faces, the product defect rate is still relatively high.

[0003] Currently, there are publicly available technologies for grinding the end faces of cylindrical springs. The disclosed spring grinding machine tool 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 hold the cylindrical spring. The swing frame is hinged to the machine body. The swing drive mechanism can drive the swing frame to swing about the hinge axis. The grinding wheel is rotatably mounted on the machine body via a grinding wheel holder. Through the swing of the swing frame, one end face of the cylindrical spring fixed on the spring clamp comes 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, completing the repeated grinding of one end face of the cylindrical spring.

[0004] Although the aforementioned spring grinding machine can grind both end faces of a cylindrical spring, the grinding is carried out during the reciprocating oscillation of the cylindrical spring. During the oscillation, the end face of the cylindrical spring will inevitably have a corresponding runout perpendicular to the grinding end face, resulting in a large deviation in the flatness of the end face of the cylindrical spring, increasing the perpendicularity 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 this invention is: addressing the issue of low machining accuracy of cylindrical springs on various facades in the existing technology, this invention proposes a rotary clamping and positioning device suitable for precision grinding of the end face of cylindrical springs.

[0006] The present invention solves the above-mentioned technical problem through the following technical solution:

[0007] A rotary clamping and positioning device for precision grinding of cylindrical spring end faces includes a spring clamping and positioning component, a cylindrical spring rotary clamping component, an automatic center height adjustment component, and a mounting frame, wherein:

[0008] The mounting frame includes a mounting base, a positioning mounting plate, and a self-adjusting mounting plate. The mounting base has the positioning mounting plate and the self-adjusting mounting plate perpendicular to each other. The positioning mounting plate is located at one edge of the mounting base, and the self-adjusting mounting plate is perpendicular to the positioning mounting plate, with one end close to the inner side of the positioning mounting plate and the other end close to the other edge of the mounting base. A spring clamping and positioning component for holding and adjusting the cylindrical spring to be processed is located above the positioning mounting plate. A center height automatic adjustment component for controlling the processing height of the cylindrical spring to be processed is located above the self-adjusting mounting plate. A cylindrical spring rotating clamping component for controlling the rotation of the cylindrical spring during processing is located above the top of the center height automatic adjustment component and maintains the same processing height as the spring clamping and positioning component to cooperate with the spring clamping and positioning component in completing the positioning and rotation control of the cylindrical spring to be processed.

[0009] The spring clamping positioning component 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 to the top plate of the positioning and mounting 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 set on the top plate. The clamping connecting plate is connected to the support by the first linear guide pair set 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. 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 rotary clamping component includes a rotary clamping part and a spring positioning part. The spring positioning part is located above the top plate of the center height automatic adjustment component, and the rotary clamping part is used to clamp and rotate the cylindrical spring to be processed.

[0012] The rotary clamping component includes: spring grippers, gripper cylinders, bearing housings, couplings, servo geared motors, rotary servo motors, clamping base plates, and flange shafts, wherein:

[0013] The spring gripper is fixed to the gripper cylinder's own gripper by positioning screws. The gripper cylinder drives the own gripper to achieve the clamping action of the cylindrical spring. The gripper cylinder is connected to the flange of the flange shaft by screws. The shaft end of the flange shaft is connected to the output shaft of the servo geared motor through a coupling. The flange shaft is fixed on the clamping base plate and supported by the rolling bearing seat. The servo geared motor is fixedly installed on the clamping base plate through a motor bracket. The gripper cylinder achieves rotation under the drive of the servo geared motor. The rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected to the clamping base plate through a floating joint.

[0014] The bearing housing and rotary servo motor are used to control the radial runout accuracy and axial rotation angle accuracy of the spring gripper. When the rotary gripper needs 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 plate is mounted above the top plate of the center height automatic adjustment component through the second linear guide pair set below.

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

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

[0017] The automatic center height adjustment component includes a top plate, lifting guide wheels, lifting guide blocks, guide plates, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a base 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. The vertical lifting guide shafts and linear ball bearings fixedly installed on the bottom plate realize linear rolling movement, which enables the top plate to move up and down in the vertical direction. The lifting guide slide is fixedly installed on the guide slide plate, and the guide slide plate is connected to the slider of the third linear motion guide rail pair set on the bottom plate. The height adjustment servo motor is set between the guide slide plate and the bottom plate and installed on the side away from the spring clamping positioning component. The guide rail of the third linear motion guide rail pair is fixedly installed on the edge of the self-adjusting mounting plate to ensure that the height adjustment servo motor drives the ball screw to drive the lifting guide slide to make horizontal linear movement.

[0019] The top plate is equipped with four lifting guide wheels at its bottom. The lifting guide wheels drive the top plate to make vertical linear motion under the push of the lifting guide slider. The self-adjusting mounting plate is equipped with a fourth linear guide pair. The center height automatic adjustment component is installed on the slider of the fourth linear guide pair through the base plate. The ball screw pair is driven by the servo reduction motor to drive the top plate and the center height adjustment device to make horizontal linear motion as a whole, so as to realize the action of the cylindrical spring to be processed rotating gripping positioning component forward gripping the cylindrical spring placed on the spring clamping positioning component.

[0020] The dimensions of the mounting base plate, the positioning mounting plate, and the self-adjusting mounting plate are adjusted according to the dimensions of the cylindrical spring to be processed.

[0021] The upper clamping and positioning block and the lower clamping and positioning block form a V-shaped structure. The spring clamping and positioning component fixes the cylindrical spring to be processed onto the V-shaped structure. The self-centering adjustment of the V-shaped structure ensures that the axis of the cylindrical spring to be processed coincides with the V-shaped structure. The cylindrical spring rotating clamping component controls the rotation of the cylindrical spring to be processed to improve the perpendicularity and surface finish of the cylindrical spring end face and to meet the dimensional tolerance requirements of the cylindrical spring to be processed. The center height automatic adjustment component is used to automatically adjust the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamping component.

[0022] During the grinding process of the cylindrical spring to be processed, the servo motor and rotary servo motor of the rotary clamping part, and the height adjustment servo motor and servo geared motor of the center height automatic adjustment component operate simultaneously to ensure the processing height of the cylindrical spring to be processed while ensuring the grinding accuracy of the cylindrical spring to be processed; the clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair, the clamping base plate drives the rotary 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 component slides on the fourth linear guide pair. The spacing of each linear guide pair is adjusted according to the installation position.

[0023] The advantages of this invention compared to the prior art are:

[0024] (1) The present invention provides a rotary clamping and positioning device suitable for fine grinding of cylindrical spring end face. Through the spring rotary clamping device with automatic center height adjustment, the problem of large perpendicularity error of cylindrical spring end face caused by inaccurate spring positioning and the vertical jump of cylindrical spring end face and grinding end face during grinding motion is eliminated. In addition, the device has the advantages of simple structure, wide applicability to workpieces, flexible and convenient operation, convenient adjustment, and high automation efficiency.

[0025] (2) The present invention uses a spring clamping positioning mechanism to clamp and fix the spring to the positioning V-block. Through the self-centering function of the V-block, the cylindrical spring axis and the center plane of the positioning V-block are ensured to coincide, thereby improving the perpendicularity error between the cylindrical spring axis 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, improving the perpendicularity and surface finish of the cylindrical spring end face, meeting the requirements for the dimensional tolerance of the cylindrical spring. 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. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the rotary clamping and positioning device for precision grinding of the end face of a cylindrical spring provided by the present invention.

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

[0028] Figure 3 is a schematic diagram of the spring rotation clamping and positioning device provided by the present invention.

[0029] Figure 4 is a schematic diagram of the spring rotation clamping and positioning device provided by the present invention (II).

[0030] Figure 5 is a schematic diagram of the mounting frame structure provided by the present invention. Detailed Implementation

[0031] A rotary clamping and positioning device for precision grinding of cylindrical spring end faces is provided. This device, specifically designed for precision grinding of cylindrical spring end faces, includes a spring clamping and positioning component, a cylindrical spring rotary clamping component, an automatic center height adjustment component, and a mounting frame. The spring clamping and positioning component clamps and fixes the spring onto a positioning V-block. The cylindrical spring rotary clamping component enables the spring end face grinding machine to rotate during the grinding process. The automatic center height adjustment component automatically adjusts the center height of the cylindrical spring rotary clamping component. The mounting frame mounts the spring clamping and positioning fixture, the cylindrical spring rotary clamping component, and the automatic center height adjustment component, facilitating precise positioning of the spring on the spring positioning fixture and providing robust support for each component.

[0032] Suitable for use in rotary clamping and positioning devices for precision grinding of cylindrical spring end faces:

[0033] The mounting frame includes a mounting base, a positioning mounting plate, and a self-adjusting mounting plate. The mounting base has the positioning mounting plate and the self-adjusting mounting plate perpendicular to each other. The positioning mounting plate is located at one edge of the mounting base, and the self-adjusting mounting plate is perpendicular to the positioning mounting plate, with one end close to the inner side of the positioning mounting plate and the other end close to the other edge of the mounting base. A spring clamping and positioning component for holding and adjusting the cylindrical spring to be processed is located above the positioning mounting plate. A center height automatic adjustment component for controlling the processing height of the cylindrical spring to be processed is located above the self-adjusting mounting plate. A cylindrical spring rotating clamping component for controlling the rotation of the cylindrical spring during processing is located above the top of the center height automatic adjustment component and maintains the same processing height as the spring clamping and positioning component to cooperate with the spring clamping and positioning component in completing the positioning and rotation control of the cylindrical spring to be processed.

[0034] The spring clamping positioning component 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 to the top plate of the positioning and mounting 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 set on the top plate. The clamping connecting plate is connected to the support by the first linear guide pair set 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. 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 component includes a rotary clamping part and a spring positioning part. The spring positioning part is located above the top plate of the center height automatic adjustment component, and the rotary clamping part is used to clamp and rotate the cylindrical spring to be processed.

[0037] The rotary clamping component includes: spring grippers, gripper cylinders, bearing housings, couplings, servo geared motors, rotary servo motors, clamping base plates, and flange shafts, wherein:

[0038] The spring gripper is fixed to the gripper cylinder's own gripper by positioning screws. The gripper cylinder drives the own gripper to achieve the clamping action of the cylindrical spring. The gripper cylinder is connected to the flange of the flange shaft by screws. The shaft end of the flange shaft is connected to the output shaft of the servo geared motor through a coupling. The flange shaft is fixed on the clamping base plate and supported by the rolling bearing seat. The servo geared motor is fixedly installed on the clamping base plate through a motor bracket. The gripper cylinder achieves rotation under the drive of the servo geared motor. The rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected to the clamping base plate through a floating joint.

[0039] The bearing housing and rotary servo motor are used to control the radial runout accuracy and axial rotation angle accuracy of the spring gripper. When the rotary gripper needs 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 plate is mounted above the top plate of the center height automatic adjustment component through the second linear guide pair set below.

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

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

[0042] The automatic center height adjustment component includes a top plate, lifting guide wheels, lifting guide slides, guide slides, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a base plate, a third linear guide pair, a ball screw pair, and a servo geared motor, wherein:

[0043] Four vertical lifting guide shafts are fixedly installed on the inner side of the top plate. The vertical lifting guide shafts and linear ball bearings fixedly installed on the bottom plate realize linear rolling movement, which enables the top plate to move up and down in the vertical direction. The lifting guide slide is fixedly installed on the guide slide plate, and the guide slide plate is connected to the slider of the third linear motion guide rail pair set on the bottom plate. The height adjustment servo motor is set between the guide slide plate and the bottom plate and installed on the side away from the spring clamping positioning component. The guide rail of the third linear motion guide rail pair is fixedly installed on the edge of the self-adjusting mounting plate to ensure that the height adjustment servo motor drives the ball screw to drive the lifting guide slide to make horizontal linear movement.

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

[0045] The dimensions of the mounting base, positioning mounting plate, and self-adjusting mounting plate are adjusted according to the dimensions of the cylindrical spring to be processed.

[0046] The upper and lower clamping positioning blocks are V-shaped structures. The spring clamping positioning component fixes the cylindrical spring to be processed onto the V-shaped structure. The self-centering adjustment of the V-shaped structure ensures that the axis of the cylindrical spring to be processed coincides with the V-shaped structure. The cylindrical spring rotating clamping component controls the rotation of the cylindrical spring to be processed to improve the perpendicularity and surface finish of the cylindrical spring end face and to meet the dimensional tolerance requirements of the cylindrical spring to be processed. The center height automatic adjustment component is used to automatically adjust the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamping component.

[0047] During the grinding process of the cylindrical spring to be processed, the servo motor and rotary servo motor of the rotary clamping part, and the height adjustment servo motor and servo geared motor of the center height automatic adjustment component operate simultaneously to ensure the processing height of the cylindrical spring to be processed while ensuring the grinding accuracy of the cylindrical spring to be processed; the clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair, the clamping base plate drives the rotary 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 component slides on the fourth linear guide pair. The spacing of each linear guide pair is adjusted according to the installation position.

[0048] The following description, in conjunction with the accompanying drawings and preferred embodiments, provides further details:

[0049] In the current embodiment, it includes: 1. a spring clamping and positioning device for clamping and fixing the spring to the positioning V-block; 2. a cylindrical spring rotating clamping device for enabling the spring end face grinding machine to rotate the cylindrical spring during the grinding process; 3. an automatic center height adjustment device for automatically adjusting the center height of the cylindrical spring rotating clamping device; and 4. a mounting frame for mounting the spring clamping and positioning fixture, the cylindrical spring rotating clamping device, and the automatic center height adjustment device to facilitate the precise positioning of the spring on the spring positioning fixture and to provide firm support for each device.

[0050] The rotary clamping and positioning device for precision grinding of cylindrical spring end faces includes: a spring clamping and positioning mechanism 100, a cylindrical spring rotary clamping device 200, an automatic center height adjustment device 300, and a mounting frame 400. The four parts are shown in Figure 1. As shown in Figure 2, the spring clamping positioning device is used to achieve fixed positioning and clamping of the spring. The spring clamping positioning mechanism 100 includes a lower clamping positioning block fixed to the mounting frame 101 by bolts, an upper clamping positioning block 103 fixedly connected to the clamping connecting plate 110 by a quick-change block 104, the clamping connecting plate being connected to the support 109 by a linear guide pair, the support 109 being fixedly connected to the mounting frame 101 by bolts, and a clamping cylinder 105 being 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. The clamping connecting plate 110 drives the upper clamping positioning block 103 to perform clamping and opening actions from bottom to bottom under the drive of the clamping cylinder 105. As shown in Figures 3 and 4, the cylindrical spring rotary clamping and positioning device 200 comprises two parts: a cylindrical spring rotary clamping unit and a spring positioning unit. In the cylindrical spring rotary clamping unit, the spring jaws 201 are fixed to the jaws of the jaw cylinder 202 via positioning screws. The jaw cylinder 202 drives the jaws to clamp the cylindrical spring. The jaw cylinder is connected to the flange of the flange shaft 209 via screws. The shaft end of the flange shaft 209 is connected to the output shaft of the servo reducer motor 205 via a coupling 204. The flange shaft is supported by a rolling bearing seat 203 fixed on the base plate 207. The servo reducer motor is fixedly mounted to the base plate 207 via a motor bracket. The jaw cylinder 202 rotates under the drive of the servo reducer motor 205. The precision bearing seat 203 and the rotary servo motor 206 ensure the radial runout accuracy and axial rotation angle accuracy requirements of the spring jaws 201. The base plate 207 is mounted on the upper mounting plate 301 via the linear guide pair 208. The rotary gripping feed cylinder 206 is mounted on the upper mounting plate 207 via the cylinder mounting bracket 214. The piston rod of the cylinder 206 is connected to the upper mounting plate 301 via the floating joint 215 and the connecting plate 216. Thus, when the rotating gripper 201 needs to grip the spring, the piston rod of the cylinder 206 extends, and when the gripping action is completed, the piston rod of the cylinder 206 retracts. The spring positioning part of the cylindrical spring rotation clamping positioning device 200 includes a spring positioning push rod 210 mounted on a spring push rod push plate 211. 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 mounted on the upper mounting plate 301 through a cylinder support 213. The piston rod of the driving cylinder 212 is fixedly connected to the spring push rod push plate 211. In this way, the driving cylinder 212 drives the spring push rod 210 to position the spring end face.The center height automatic adjustment device 300 includes an upper mounting plate 301 with four vertical lifting guide shafts 306 fixedly mounted on it and linear ball bearings fixedly mounted on a lower mounting plate 309 to achieve linear rolling movement, ensuring that the upper mounting plate 301 can move vertically and accurately. The lifting guide slider 303 is fixedly mounted on the guide plate 304, which is connected to the slider of the linear motion guide rail pair. The guide rail of the guide rail pair is fixedly mounted on the mounting base 400. In this way, the servo motor 305 drives the ball screw 307 to drive the lifting guide slider 303 to make horizontal linear movement. Four lifting guide wheels are installed at the bottom of the upper mounting plate 301. The lifting guide wheels 302 drive the upper mounting plate 301 to make vertical linear movement under the push of the lifting guide slider 303. In this way, the rotational movement of the servo motor 305 is converted into the vertical linear movement of the upper mounting plate 301. A linear guide pair 313 is mounted on the mounting frame 400. The center height automatic adjustment device is mounted on the slider of the linear motion guide pair 313 via the lower mounting plate 309. The ball screw pair 311 is driven by the servo reduction motor 312 to drive the upper mounting plate 309 and the center height adjustment device mounted on it to perform horizontal linear motion, thereby realizing the forward gripping and positioning of the cylindrical spring rotation gripping and positioning device 200 on the spring clamping and positioning device. As shown in Figure 5, the mounting frame 400 includes a mounting base plate 401, a positioning mounting plate 402 for the spring clamping and positioning mechanism 100, and a self-adjusting mounting plate 403 for the center height automatic adjustment device. All components of the mounting frame are manufactured by precision machining to ensure the installation accuracy of each actuator.

[0051] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

[0052] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A rotary clamping and positioning device suitable for precision grinding of the end face of a cylindrical spring, characterized in that: The system includes a spring clamping and positioning component, a cylindrical spring rotating clamping component, a center height automatic adjustment component, and a mounting frame. The mounting frame comprises a mounting base, a positioning mounting plate, and a self-adjusting mounting plate. The mounting base has mutually perpendicular positioning and self-adjusting mounting plates. The positioning mounting plate is located at one edge of the mounting base, and the self-adjusting mounting plate is perpendicular to the positioning mounting plate, with one end tightly against the inner side of the positioning mounting plate and the other end tightly against the other edge of the mounting base. The spring clamping and positioning component, used to clamp and adjust the cylindrical spring to be processed, is located above the positioning mounting plate. The center height automatic adjustment component, which controls the processing height of the cylindrical spring to be processed, is located above the self-adjusting mounting plate, controlling the rotation of the cylindrical spring during processing. A cylindrical spring rotating clamping component is positioned above the center height automatic adjustment component and maintains the same processing height as the spring clamping positioning component to cooperate with the spring clamping positioning component in completing the positioning and rotation control of the cylindrical spring to be processed. The spring clamping positioning component includes a lower clamping positioning block, an upper clamping positioning block, a quick-change block, a clamping connecting plate, a support, and a clamping cylinder. Specifically: the lower clamping positioning block is bolted to the top plate of the positioning mounting plate; the upper clamping positioning block is fixedly connected to the clamping connecting plate via the quick-change block; the support is vertically mounted on the top plate; the clamping connecting plate is connected to the support via a first linear guide pair on the side of the support; the clamping cylinder is screwed to the top plate; and the piston rod of the clamping cylinder is fixedly connected to the clamping connecting plate via a floating joint. 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; the cylindrical spring rotating clamping component includes a rotating clamping part and a spring positioning part. The spring positioning part is set above the top plate of the center height automatic adjustment component. The rotating clamping part is used to clamp and rotate the cylindrical spring to be processed; the rotating clamping part includes: spring jaws, jaw cylinders, bearing seats, couplings, servo geared motors, rotary servo motors, clamping base plates, and flange rotating shafts. Among them, the spring jaws are fixed together with the jaws of the jaw cylinders by positioning screws. The jaw cylinders drive the jaws to achieve the clamping action of the cylindrical springs. The jaw cylinders are connected to the flange of the flange rotating shaft by screws. The rotating shaft end of the flange rotating shaft is connected to the servo cylinder by a coupling. The output shaft of the servo geared motor is connected, and the flange shaft is fixed on the clamping base plate and supported by the bearing seat. The servo geared motor is fixedly installed on the clamping base plate through the motor bracket. The gripper cylinder realizes the rotation action under the drive of the servo geared motor. The rotary servo motor is installed on the clamping base plate, and the piston rod of the rotary servo motor is connected to the clamping base plate through the floating joint. The bearing seat and the rotary servo motor are used to realize the radial runout accuracy and axial rotation angle accuracy control requirements of the spring gripper. When the rotary gripper needs to grab the cylindrical spring to be processed, the piston rod of the rotary servo motor extends. When the gripping action is completed, the piston rod of the rotary servo motor retracts. The clamping base plate is installed above the top plate of the center height automatic adjustment component through the second linear guide pair set below.The spring positioning component includes a spring positioning push rod, a spring push rod push plate, a spring push rod drive cylinder, and a cylinder support. The spring positioning push rod is mounted on the spring push rod push plate, which is connected to the top plate of the automatic center height adjustment component via a second linear guide pair. The spring push rod drive cylinder is mounted on the top plate via a cylinder support, and the drive cylinder is fixedly connected to enable the drive cylinder to position the end face of the cylindrical spring to be machined. The automatic center height adjustment component includes a top plate, a lifting guide wheel, a lifting guide slider, a guide plate, a height adjustment servo motor, a vertical lifting guide shaft, a ball screw, a base plate, a third linear guide pair, a ball screw pair, and a servo reducer. The system includes: four vertical lifting guide shafts fixedly installed on the inner side of the top plate, which achieve linear rolling movement via linear ball bearings fixedly installed on the bottom plate, enabling the top plate to move vertically; a lifting guide slide fixedly installed on a guide plate, which is connected to the slider of a third linear motion guide rail pair on the bottom plate; a height adjustment servo motor positioned between the guide plate and the bottom plate and installed on the side away from the spring clamping positioning component; the guide rail of the third linear motion guide rail pair is fixedly installed on the edge of the self-adjusting mounting plate to ensure that the height adjustment servo motor drives the ball screw to move the lifting guide slide horizontally; the bottom of the top plate is equipped with... Equipped with four lifting guide wheels, the top plate moves vertically under the push of the lifting guide slider. A fourth linear guide pair is mounted on the self-adjusting mounting plate. The automatic center height adjustment component is mounted on the slider of the fourth linear guide pair via the base plate. A servo reduction motor drives a ball screw pair to move the top plate and the center height adjustment device horizontally, enabling the rotating gripper positioning component to grip the cylindrical spring to be processed, which is placed on the spring clamping positioning component. The upper and lower clamping positioning blocks form a V-shaped structure. The spring clamping positioning component fixes the cylindrical spring to be processed onto the V-shaped structure, and the self-centering adjustment of the V-shaped structure ensures... The axis of the cylindrical spring to be processed coincides with the V-shaped structure; the cylindrical spring rotating clamping component controls the rotation of the cylindrical spring to be processed to improve the perpendicularity and surface finish of the cylindrical spring end face, and to meet the dimensional tolerance requirements of the cylindrical spring to be processed; the center height automatic adjustment component is used to automatically adjust the center height of the cylindrical spring to be processed to ensure the rotation clamping accuracy of the cylindrical spring rotating clamping component; during the grinding process of the cylindrical spring to be processed, the servo motor and rotary servo motor of the rotating clamping part, the height adjustment servo motor and servo geared motor of the center height automatic adjustment component operate simultaneously to ensure the processing height of the cylindrical spring to be processed while ensuring the grinding accuracy of the cylindrical spring to be processed;The system comprises several components: a clamping connecting plate drives the upper clamping positioning block to slide on the first linear guide pair; a clamping base plate drives the rotating clamping part to slide on the second linear guide pair; a height adjustment servo motor drives the ball screw to drive the lifting guide slider to slide on the third linear guide pair; and an automatic center height adjustment component slides on the fourth linear guide pair. The spacing of each linear guide pair is adjusted according to the installation position. The spring clamping positioning component is used to clamp and fix the spring to the positioning V-block; the cylindrical spring rotating clamping component allows the cylindrical spring to rotate during the grinding process; and the automatic center height adjustment component automatically adjusts the center height of the cylindrical spring rotating clamping component. The mounting frame is used to install the spring clamping positioning fixture, the cylindrical spring rotating clamping component, and the automatic center height adjustment component, facilitating precise positioning of the spring on the spring positioning fixture and providing robust support for each component.

2. The rotary clamping and positioning device for precision grinding of the end face of a cylindrical spring according to claim 1, characterized in that: The dimensions of the mounting base plate, the positioning mounting plate, and the self-adjusting mounting plate are adjusted according to the dimensions of the cylindrical spring to be processed.

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