A helical compression spring end face grinding system

Abstract

The application discloses a spiral compression spring end face grinding system, which comprises a base and a material receiving mechanism, a compression spring clamping mechanism and two feeding grinding mechanisms installed on the base. The compression spring clamping mechanism is located in the middle of the base and extends longitudinally. The material receiving mechanism is close to the front end of the compression spring clamping mechanism. The two feeding grinding mechanisms are oppositely arranged on the two sides of the compression spring clamping mechanism. The material receiving mechanism is used for placing the compression spring to be processed on the compression spring clamping mechanism. The compression spring clamping mechanism is used for clamping and driving the compression spring to be processed to move longitudinally. The feeding grinding mechanism can drive the grinding wheel to move horizontally so as to grind the two side end faces of the compression spring to be processed. In the production process, the end face position of the compression spring can be automatically positioned, and the end face position of the grinding wheel is intelligently recognized. In the processing process, the grinding precision, efficiency and qualified rate are high, and the production quality is ensured. The perpendicularity of the end face of the compression spring is ensured by the equipment precision. The grinding is carried out through servo feeding, and the grinding amount precision and roughness requirements are met.

Description

Technical Field

[0001] This invention relates to the field of compression spring processing, and in particular to a grinding system for the end face of a helical compression spring. Background Technology

[0002] Helical compression springs are used in many industrial fields. Due to their inherent characteristics, both end faces of the helical compression spring need to be ground flat. The ground end faces must be perpendicular to the helical centerline, and the surface roughness also needs to be controlled. Especially in the aerospace field, the requirements for perpendicularity and roughness are even higher. Perpendicularity needs to reach 0.1mm, and roughness needs to reach 1.6. Furthermore, because the initial length of the compression spring varies, the amount of grinding on the end faces of the compression spring needs to be controlled with a grinding accuracy of ±0.1mm, rather than controlling the total length of the compression spring after grinding.

[0003] Given these stringent requirements, ordinary end-face spring grinding machines cannot achieve the aforementioned precision levels. Furthermore, these machines can only control the overall length and cannot control the grinding amount based on the individual differences of each spring. During processing, only one end face of the spring can be machined first, and then the other end face must be machined after disassembly and reassembly. Manual grinding also struggles to meet the predetermined precision requirements. Manual grinding has a high failure rate and low efficiency, requiring continuous manual attempts and measurements, making precise control of the grinding amount impossible. Moreover, manual grinding requires workers to wear protective gear such as dust masks to avoid inhaling dust, resulting in a harsh production environment.

[0004] Therefore, there is an urgent need in the production site of compression springs for a spiral compression spring end face grinding system that can automatically identify the end face of the compression spring, control the grinding amount, and provide high precision and high protection. Summary of the Invention

[0005] The purpose of this invention is to provide a helical compression spring end face grinding system that can replace traditional compression spring end face grinding machines and manual grinding. In the production process, the system can automatically locate the position of the compression spring end face, intelligently identify the position of the grinding wheel end face, and automatically grind, achieving high grinding accuracy, high efficiency, and high pass rate, thus ensuring production quality.

[0006] To solve the above-mentioned technical problems, the present invention provides a helical compression spring end face grinding system, including a base and a receiving mechanism, a compression spring clamping mechanism and two feed grinding mechanisms mounted on the base. The compression spring clamping mechanism is located in the middle of the base and extends longitudinally. The receiving mechanism is close to the front end of the compression spring clamping mechanism. The two feed grinding mechanisms are arranged opposite to each other on the lateral sides of the compression spring clamping mechanism. The receiving mechanism is used to place the compression spring to be processed in the compression spring clamping mechanism. The compression spring clamping mechanism is used to clamp and drive the compression spring to be processed to move longitudinally and horizontally. The feed grinding mechanisms can drive the grinding wheel to move laterally and horizontally to grind the two end faces of the compression spring to be processed.

[0007] Preferably, the receiving mechanism includes a receiving base plate, on which a receiving horizontal driver and a receiving horizontal movable plate are provided. The receiving horizontal movable plate is provided with a receiving lifting driver and a receiving lifting movable plate. The receiving lifting movable plate is provided with a rotary driver and a receiving transmission mechanism. The receiving transmission mechanism is connected to a receiving rod. A spring to be processed is fitted onto the receiving rod. The receiving horizontal driver is used to drive the receiving horizontal movable plate to move horizontally laterally. The receiving lifting driver is used to drive the receiving lifting movable plate to move vertically. The rotary driver drives the receiving rod to rotate around a longitudinally extending horizontal axis through the receiving transmission mechanism.

[0008] Preferably, the spring clamping mechanism includes a clamping base plate, on which a clamping driver, a clamping transmission mechanism, and a clamping horizontal moving plate are provided. The clamping horizontal moving plate is provided with a lower clamp, an upper clamp, and a clamping driver. The clamping driver drives the clamping horizontal moving plate to move longitudinally and horizontally through the clamping transmission mechanism. The clamping driver is used to drive the lower clamp and the upper clamp to move closer to or separate from each other.

[0009] Preferably, the horizontal moving plate of the clamping device is provided with diamond pens on both sides for dressing the grinding wheel.

[0010] Preferably, the feed grinding mechanism includes a grinding base plate, on which a grinding driver, a grinding transmission mechanism and a grinding horizontal moving plate are provided. The grinding horizontal moving plate is provided with a main driver and the grinding wheel. The grinding driver drives the grinding horizontal moving plate to move laterally horizontally through the grinding transmission mechanism, and the main driver drives the grinding wheel to rotate.

[0011] Preferably, the grinding horizontal moving plate is further provided with a positioning driver, a positioning rod, an ejector driver, and an ejector rod. The positioning driver is used to drive the positioning rod to extend and retract horizontally, and the ejector driver is used to drive the ejector rod to extend and retract horizontally. The ejector rod of the feed grinding mechanism on one side is aligned with the positioning rod of the feed grinding mechanism on the other side. The ejector rod on one side pushes one end of the spring to be processed, so that the other end of the spring to be processed abuts against the positioning rod on the other side.

[0012] Preferably, the clamping driver and the grinding driver are servo motors, and the clamping transmission mechanism and the grinding transmission mechanism are precision ball screw pairs.

[0013] Preferably, a protective cover and a control cabinet are installed on the base.

[0014] Preferably, a detection mechanism is installed on the base, the detection mechanism is located above the compression spring clamping mechanism and between the two feed grinding mechanisms, and the detection mechanism is used to calibrate the end face positions of the two grinding wheels.

[0015] Preferably, the detection mechanism includes a support, on which a detection lifting driver and a detection lifting moving plate are provided. The detection lifting moving plate is provided with a pin driver and a fixing pin. The pin driver is used to push the fixing pin into the positioning hole. The detection lifting moving plate is also provided with two displacement sensors and two detection rods. The two detection rods are used to contact the two grinding wheels respectively.

[0016] This invention provides a grinding system for the end faces of a helical compression spring, including a base and a receiving mechanism, a compression spring clamping mechanism, and two feed grinding mechanisms mounted on the base. The compression spring clamping mechanism is located in the middle of the base and extends longitudinally. The receiving mechanism is close to the front end of the compression spring clamping mechanism. The two feed grinding mechanisms are arranged opposite to each other on the lateral sides of the compression spring clamping mechanism. The receiving mechanism is used to place the compression spring to be processed in the compression spring clamping mechanism. The compression spring clamping mechanism is used to clamp and drive the compression spring to be processed to move longitudinally and horizontally. The feed grinding mechanisms can drive the grinding wheel to move laterally and horizontally to grind the two end faces of the compression spring to be processed.

[0017] It can replace traditional spring face grinding machines and manual grinding. During the production process, it can automatically position the spring face and intelligently identify the position of the grinding wheel face to complete the automatic grinding. No reassembly or disassembly is required during processing. It offers high grinding precision, high efficiency, and a high pass rate, ensuring production quality. The perpendicularity of the spring face is guaranteed by the equipment's precision, achieved through servo feed, meeting the requirements for grinding accuracy and surface roughness. Attached Figure Description

[0018] Figure 1A schematic diagram of the internal structure of a specific embodiment of the helical spring end face grinding system provided by the present invention;

[0019] Figure 2 This is a schematic diagram of the external structure of a specific embodiment of the helical spring end face grinding system provided by the present invention;

[0020] Figure 3 A schematic diagram of the material receiving mechanism in a specific embodiment of the helical spring end face grinding system provided by the present invention;

[0021] Figure 4 This is a schematic diagram of the spring clamping mechanism in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0022] Figure 5 This is a schematic diagram of the feed grinding mechanism from one perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the feed grinding mechanism from another perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the detection mechanism from one perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0025] Figure 8 This is a schematic diagram of the detection mechanism from another perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention. Detailed Implementation

[0026] The core of this invention is to provide a helical compression spring end face grinding system, which can replace traditional compression spring end face grinding machines and manual grinding. In the production process, the system can automatically locate the position of the compression spring end face, intelligently identify the position of the grinding wheel end face, and automatically grind, achieving high grinding accuracy, high efficiency, and high pass rate, thus ensuring production quality.

[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the internal structure of a specific embodiment of the helical spring end face grinding system provided by the present invention; Figure 2 This is a schematic diagram of the external structure of a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0029] This invention provides a helical compression spring end face grinding system, including a base 1 and a receiving mechanism 2, a compression spring clamping mechanism 5, and two feed grinding mechanisms 3 mounted on the base 1. The compression spring clamping mechanism 5 is located in the middle of the base 1 and extends longitudinally. The receiving mechanism 2 is close to the front end of the compression spring clamping mechanism 5. The two feed grinding mechanisms 3 are arranged opposite each other on the lateral sides of the compression spring clamping mechanism 5. The receiving mechanism 2 is used to place the compression spring to be processed in the compression spring clamping mechanism 5. The compression spring clamping mechanism 5 is used to clamp and drive the compression spring to be processed to move longitudinally and horizontally. The feed grinding mechanisms 3 can drive the grinding wheel 301 to move laterally and horizontally to grind the two end faces of the compression spring to be processed.

[0030] During the operation, the spring to be processed is placed on the receiving mechanism 2. The receiving mechanism 2 transports the spring to be processed to the spring clamping mechanism 5. The spring clamping mechanism 5 clamps and positions the spring to be processed. Then, the two ends of the spring to be processed are ground by the feed grinding mechanisms 3 on both sides. The spring clamping mechanism 5 realizes the longitudinal feed during processing, and the feed grinding mechanism 3 realizes the transverse feed during processing.

[0031] It can replace traditional spring face grinding machines and manual grinding. During the production process, it can automatically position the spring face and intelligently identify the position of the grinding wheel face to complete the automatic grinding. No reassembly or disassembly is required during processing. It offers high grinding precision, high efficiency, and a high pass rate, ensuring production quality. The perpendicularity of the spring face is guaranteed by the equipment's precision, achieved through servo feed, meeting the requirements for grinding accuracy and surface roughness.

[0032] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the material receiving mechanism in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0033] In the helical compression spring end face grinding system provided in a specific embodiment of the present invention, the receiving mechanism 2 includes a receiving base plate 210, a receiving horizontal driver and a receiving horizontal moving plate 207 are provided on the receiving base plate 210, a receiving lifting driver and a receiving lifting moving plate 204 are provided on the receiving horizontal moving plate 207, a rotary driver and a receiving transmission mechanism are provided on the receiving lifting moving plate 204, the receiving transmission mechanism is connected to the receiving rod 201, the compression spring to be processed is fitted onto the receiving rod 201, the receiving horizontal driver is used to drive the receiving horizontal moving plate 207 to move horizontally, the receiving lifting driver is used to drive the receiving lifting moving plate 204 to move vertically, and the rotary driver drives the receiving rod 201 to rotate around the longitudinally extending horizontal axis through the receiving transmission mechanism.

[0034] Specifically, the receiving horizontal drive is a receiving horizontal drive cylinder 209, the receiving lifting drive is a receiving lifting drive cylinder 206, the rotary drive is a rotary drive cylinder 203, the receiving transmission mechanism is a gear and rack mechanism 202, the receiving horizontal drive cylinder 209 and the receiving double-row linear guide rail 208 are fixedly connected to the receiving base plate 210, the receiving horizontal drive cylinder 209 extends and retracts to drive the receiving horizontal moving plate 207 forward and backward along the receiving double-row linear guide rail 208; the receiving lifting drive cylinder 206 is fixedly connected to the receiving base plate 210. On the horizontal moving plate 207, the receiving lifting drive cylinder 206 extends and retracts to drive the receiving lifting moving plate 204 to move up and down along the receiving lifting guide rod 205; the rotary drive cylinder 203 and the gear and rack mechanism 202 are fixedly connected to the receiving lifting moving plate 204. The rotary drive cylinder 203 extends and retracts to drive the gear and rack mechanism 202 to rotate, causing the receiving rod 201 to rotate in the vertical plane, picking up and placing materials at 60° and 90° positions respectively; the receiving mechanism 2 as a whole is fixedly connected to the base 1 through the receiving base plate 210.

[0035] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the spring clamping mechanism in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0036] The spring clamping mechanism 5 includes a clamping base plate 510, on which a clamping driver, a clamping transmission mechanism, and a clamping horizontal moving plate 506 are mounted. The clamping horizontal moving plate 506 is equipped with a lower clamp 501, an upper clamp 502, and a clamping driver. The clamping driver drives the clamping horizontal moving plate 506 to move longitudinally horizontally via the clamping transmission mechanism. The clamping driver drives the lower clamp 501 and the upper clamp 502 to move closer together or separate. Diamond pens 505 for dressing the grinding wheel 301 are mounted on both sides of the clamping horizontal moving plate 506.

[0037] Specifically, the clamping driver is a clamping servo motor 509, the clamping transmission mechanism is a clamping precision ball screw pair 507, and the clamping driver is a clamping cylinder 503. The lower clamp 501 is fixedly connected to the clamping horizontal moving plate 506, and the upper clamp 502 is mounted on the clamping linear guide rail 504 and is driven to rise and fall by the clamping cylinder 503, clamping the compression spring together with the lower clamp 501; the diamond pen 505 is fixedly connected to both sides of the clamping horizontal moving plate 506; the clamping horizontal moving plate 506 is mounted on the clamping double-row linear guide rail 508 and is driven to move horizontally by the clamping precision ball screw pair 507. The clamping precision ball screw pair 507 is driven by the clamping servo motor 509, which can drive the compression spring to move longitudinally to different positions for grinding, and can also move the diamond pen 505 to the position of the grinding wheel 301 for grinding the end face of the grinding wheel. The compression spring clamping mechanism 5 is fixedly connected to the base 1 through the clamping base plate 510.

[0038] Please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the feed grinding mechanism from one perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention. Figure 6 This is a schematic diagram of the feed grinding mechanism from another perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0039] The feed grinding mechanism 3 includes a grinding base plate 314, on which a grinding driver, a grinding transmission mechanism and a grinding horizontal moving plate 310 are provided. On the grinding horizontal moving plate 310, a main driver and a grinding wheel 301 are provided. The grinding driver drives the grinding horizontal moving plate 310 to move laterally horizontally through the grinding transmission mechanism, and the main driver drives the grinding wheel 301 to rotate.

[0040] Furthermore, to achieve positioning, the grinding horizontal moving plate 310 is also equipped with a positioning driver, a positioning rod 307, an ejector driver, and an ejector rod 304. The positioning driver is used to drive the positioning rod 307 to extend and retract horizontally, and the ejector driver is used to drive the ejector rod 304 to extend and retract horizontally. The ejector rod 304 of one side of the feed grinding mechanism 3 is aligned with the positioning rod 307 of the feed grinding mechanism 3 on the other side. The ejector rod 304 on one side pushes one end of the spring to be processed, so that the other end of the spring to be processed abuts against the positioning rod 307 on the other side. Among them, the grinding driver is a grinding servo motor 313, the grinding transmission mechanism is a grinding precision ball screw pair 312, the main driver is a spindle drive motor 303, the positioning driver is a positioning drive cylinder 309, and the ejector driver is an ejector drive cylinder 306.

[0041] A spindle drive motor 303 drives a rotary spindle 302 to rotate. A grinding wheel 301 is mounted on the rotary spindle 302, and its rotation allows for grinding of the end face of the compression spring. The rotary spindle 302 is mounted on a grinding horizontal moving plate 310. An ejector linear guide 305 and an ejector drive cylinder 306 are fixedly connected to the grinding horizontal moving plate 310. An ejector rod 304 is mounted on the ejector linear guide 305 and is driven by the ejector drive cylinder 306 to extend horizontally, allowing the compression spring to be moved horizontally outward. A positioning linear guide 308 and a positioning drive cylinder 309 are fixedly connected to the grinding horizontal moving plate 310. 10. The positioning rod 307 is mounted on the positioning linear guide rail 308 and is driven to extend horizontally by the positioning drive cylinder 309, which can achieve precise positioning of the end face of the compression spring; the grinding horizontal moving plate 310 is connected to the grinding precision ball screw pair 312 and is driven by the grinding servo motor 313, moving horizontally along the grinding double-row linear guide rail 311. The entire grinding horizontal moving plate 310 can be precisely positioned by servo control, which can adapt to the positioning of compression springs of different lengths and can also achieve precise feeding of the grinding wheel 301 during grinding; the grinding double-row linear guide rail 311 is fixedly connected to the grinding base plate 314. The feed grinding mechanism 3 is fixedly connected to the base 1 through the grinding base plate 314.

[0042] Preferably, a protective cover 7 and a control cabinet 4 are mounted on the base 1. The protective cover 7 is a fully enclosed sheet metal cover, which is sealed to the base 1 and equipped with a safety door for easy loading and unloading and to prevent grinding dust from spreading outside the cover. The control cabinet 4 and the pneumatic control components are installed inside the protective cover 7, and include the PLC and various electrical components necessary for the control system. The signal input terminals of the controllers of each servo motor are connected to the signal output terminals of the automatic controller via signal lines; the electrical signal input terminals of each solenoid valve are electrically connected to the electrical output terminals of the automatic controller via wires; and the signal output terminals of each displacement sensor are connected to the signal input terminals of the automatic controller via signal lines.

[0043] Please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the detection mechanism from one perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention. Figure 8 This is a schematic diagram of the detection mechanism from another perspective in a specific embodiment of the helical spring end face grinding system provided by the present invention.

[0044] Based on the helical spring end face grinding system provided in the above specific embodiments, a detection mechanism 6 is installed on the base 1. The detection mechanism 6 is located above the spring clamping mechanism 5 and between the two feed grinding mechanisms 3. The detection mechanism 6 is used to calibrate the end face positions of the two grinding wheels 301. Specifically, the detection mechanism 6 includes a support 610, on which a detection lifting driver and a detection lifting moving plate 605 are provided. The detection lifting moving plate 605 is provided with a pin driver and a fixing pin 608. The pin driver is used to push the fixing pin 608 into the positioning hole. The detection lifting moving plate 605 is also provided with two displacement sensors and two detection rods. The two detection rods are used to contact the two grinding wheels 301 respectively. The pin driver is a pin cylinder 609, the detection lifting driver is a detection lifting cylinder 607, the two detection rods are the left probe 601 and the right probe 603, and the two displacement sensors are the left displacement sensor 602 and the right displacement sensor 604.

[0045] The left probe 601 contacts the left displacement sensor 602 and can extend and retract freely horizontally; the right probe 603 contacts the right displacement sensor 604 and can also extend and retract freely horizontally; the left probe 601 and right probe 603 can contact the end face of the grinding wheel 301, and the position of the end face of the grinding wheel is identified by the left displacement sensor 602 and the right displacement sensor 604 to determine the starting position of grinding; the left probe 601, the left displacement sensor 602, the right probe 603, and the right displacement sensor 604 are fixedly connected to the detection lifting plate 605; The measuring lifting plate 605 is installed on the measuring lifting linear guide rail 606 and is driven to lift by the measuring lifting cylinder 607. When it is necessary to measure the end face of the grinding wheel 301, the measuring lifting plate 605 descends, lowering the left measuring head 601 and the right measuring head 603 to the same height position of the grinding wheel 301 for measurement. The fixing pin 608 is connected to the pin cylinder 609 and is inserted into the measuring lifting plate 605 by telescopic insertion to fix the position of the measuring lifting plate 605 and prevent the mechanism from shaking, which would affect the measurement accuracy. The entire mechanism is installed on the support 610.

[0046] The aforementioned mechanism is adapted to the rotation of a servo motor or cylinder drive based on the control precision required, and is equipped with different types of guide rail structures. The drive method can also be adjusted according to the situation, such as using motor drive for all parts or hydraulic drive for appropriate purposes. The guide rail structure can also be adapted and changed, such as using a slider and slide groove structure, all of which are within the protection scope of this invention.

[0047] The specific work process is as follows:

[0048] Loading: The clamping horizontal moving plate 506 is located at the loading position of the equipment, and the receiving rod 201 is in a 60° inclined initial position. The compression spring is placed on the receiving rod 201 by manual operation or an external robot. The rotary drive cylinder 203 drives the gear and rack mechanism 202 to rotate, rotating the receiving rod 201 to a horizontal position. The receiving horizontal drive cylinder 209 drives the receiving horizontal moving plate 207 forward, sending the compression spring between the lower clamp 501 and the upper clamp 502. The receiving lifting drive cylinder 206 drives the receiving lifting moving plate 204 to descend, placing the compression spring on the lower clamp 501. Then, the receiving horizontal drive cylinder 209 drives the receiving horizontal moving plate 207 backward, causing the receiving rod 201 to disengage from the compression spring, completing the loading.

[0049] Positioning and grinding of the left end of the compression spring: The clamping cylinder 503 drives the upper clamp 502 to press down, clamping the compression spring. The clamping servo motor 509 drives the clamping precision ball screw pair 507, which drives the clamping horizontal moving plate 506 to move backward until it reaches the position of the positioning rod 307 on the left end face. The clamping cylinder 503 drives the upper clamp 502 to rise, releasing the compression spring. The positioning drive cylinder 309 on the left end face drives the positioning rod 307 on the left end face to extend, determining the positioning reference of the left end face of the compression spring. The ejection drive cylinder 306 on the right side drives the ejection rod 304 on the right side of the compression spring to extend. Then, the grinding servo motor 313 on the right side drives the grinding precision ball screw pair 312 on the right side to move horizontally to the left, pushing the compression spring to the left to the specified displacement, so that the left end face of the compression spring contacts the positioning rod 307 on the left end face. Then, the clamping cylinder 503 drives the upper clamp 502 to press down, clamping the compression spring and fixing it in the current position. The ejector drive cylinder 306 on the right side drives the ejector rod 304 on the right side of the compression spring to retract. Then, the grinding servo motor 313 on the right side drives the grinding precision ball screw pair 312 on the right side to move horizontally to the right, returning to the initial position on the right side. The positioning drive cylinder 309 on the left end face drives the positioning rod 307 on the left end face to retract, causing the positioning rod 307 on the left end face to disengage from the pressure ring. The spindle drive motor 303 drives the grinding wheel 301 on the left side to start rotating. The clamping servo motor 509 drives the clamping horizontal moving plate 506 to move forward horizontally to the grinding position of the grinding wheel 301 on the left side. The grinding servo motor 313 on the left side drives the grinding precision ball screw pair 312, causing the grinding wheel 301 on the left side to continuously feed to the right to the specified displacement. During the feeding process, the clamping horizontal moving plate 506 drives the compression spring to move horizontally back and forth, achieving the grinding effect. When the grinding servo motor 313 on the left feeds to the specified displacement, the grinding wheel 301 stops rotating and moves horizontally to the left and back a certain distance, disengaging from the spring. The clamping horizontal moving plate 506 also stops reciprocating, and the left-side positioning grinding is completed; the grinding feed accuracy can reach 0.01mm.

[0050] Positioning and grinding of the right end of the compression spring: The clamping cylinder 503 drives the upper clamp 502 to press down, clamping the compression spring. The clamping servo motor 509 drives the clamping precision ball screw pair 507, which drives the clamping horizontal moving plate 506 to move backward until it reaches the position of the positioning rod 307 on the right end face. The clamping cylinder 503 drives the upper clamp 502 to rise, releasing the compression spring. The positioning drive cylinder 309 on the right end face drives the positioning rod 307 on the right end face to extend, determining the positioning reference of the right end face of the compression spring. The ejection drive cylinder 306 on the left side drives the ejection rod 304 on the left side of the compression spring to extend. Then, the grinding servo motor 313 on the left side drives the grinding precision ball screw pair 312 on the left side to move horizontally to the right, pushing the compression spring to the right to the specified displacement, so that the right end face of the compression spring contacts the positioning rod 307 on the right end face. Then, the clamping cylinder 503 drives the upper clamp 502 to press down, clamping the compression spring and fixing it in the current position. The ejector drive cylinder 306 on the left retracts the ejector rod 304 on the left side of the compression spring. Then, the grinding servo motor 313 on the left drives the grinding precision ball screw pair 312 on the left to move horizontally to the left, returning to the initial position on the left. The positioning drive cylinder 309 on the right end retracts the positioning rod 307 on the right end, causing the positioning rod 307 on the right end to disengage from the pressure ring. The spindle drive motor 303 drives the grinding wheel 301 on the right to start rotating. The clamping servo motor 509 drives the clamping horizontal moving plate 506 to move forward horizontally to the grinding position of the grinding wheel 301 on the right. The grinding servo motor 313 on the right drives the grinding precision ball screw pair 312, causing the grinding wheel 301 on the right to continuously feed to the left to the specified displacement. During the feeding process, the clamping horizontal moving plate 506 drives the compression spring to move horizontally back and forth, achieving the grinding effect. When the grinding servo motor 313 on the right side feeds to the specified displacement, the grinding wheel 301 stops rotating and moves horizontally to the right and back a certain distance, disengaging from the spring. The clamping horizontal moving plate 506 also stops reciprocating, and the right-side positioning grinding is completed; the grinding feed accuracy can reach 0.01mm.

[0051] Unloading: The clamping horizontal moving plate 506 is positioned at the unloading position of the equipment. The clamping cylinder 503 drives the upper clamp 502 to rise, releasing the compression spring. The receiving rod 201 is in a horizontal position. The receiving horizontal drive cylinder 209 drives the receiving horizontal moving plate 207 forward, inserting the receiving rod 201 into the compression spring. The receiving lifting drive cylinder 206 drives the receiving lifting moving plate 204 to rise, lifting the compression spring and disengaging it from the lower clamp 501. The receiving horizontal drive cylinder 209 drives the receiving horizontal moving plate 207 backward, removing the compression spring from the clamp. The rotation drive cylinder 203 drives the gear and rack mechanism 202 to rotate, rotating the receiving rod 201 to a 60° tilted initial position, ready for manual or external robot pickup, completing the unloading process.

[0052] Grinding wheel dressing: The grinding wheel 301 rotates, the clamping servo motor 509 drives the clamping precision ball screw pair 507, which drives the diamond pen 505 to move back and forth. The grinding servo motor 313 drives the grinding precision ball screw pair 312, so that the grinding wheel 301 feeds horizontally to the right or horizontally to the left, and contacts the diamond pen 505 on the opposite side to perform dressing. After feeding to the specified displacement, the grinding wheel dressing is completed.

[0053] Grinding wheel end face position calibration: After the grinding wheel is dressed, the end face of the grinding wheel needs to be calibrated. The detection lifting cylinder 607 lowers the detection lifting plate 605, placing the left probe 601 and right probe 603 within the contact range of the corresponding grinding wheel mold 301. The pin cylinder 609 extends the fixing pin 608, fixing the detection lifting plate 605 to prevent it from shaking. The grinding servo motor 313 on the left drives the grinding precision ball screw pair 312, moving the left grinding wheel mold 301 to the right to a specified displacement. The end face of the left grinding wheel mold 301 contacts the left probe 601, compressing the left displacement sensor 602. The control system reads the left displacement sensor's position. The displacement value of displacement sensor 602 is used to calculate the initial position of the end face of the left grinding wheel 301, with a positional accuracy of 0.01mm. The grinding servo motor 313 on the right drives the grinding precision ball screw pair 312, which moves the right grinding wheel 301 to the left to a specified displacement. The end face of the grinding wheel 301 contacts the right probe 603 and compresses the right displacement sensor 604. The control system reads the displacement value of the right displacement sensor 604 and calculates the initial position of the end face of the right grinding wheel 301, with a positional accuracy of 0.01mm.

[0054] The above provides a detailed description of the helical compression spring end face grinding system provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A grinding system for the end face of a helical compression spring, characterized in that, The device includes a base (1) and a receiving mechanism (2), a spring clamping mechanism (5) and two feed grinding mechanisms (3) mounted on the base (1). The spring clamping mechanism (5) is located in the middle of the base (1) and extends longitudinally. The receiving mechanism (2) is close to the front end of the spring clamping mechanism (5). The two feed grinding mechanisms (3) are arranged opposite to each other on the lateral sides of the spring clamping mechanism (5). The receiving mechanism (2) is used to place the spring to be processed on the spring clamping mechanism (5). The spring clamping mechanism (5) is used to clamp and drive the spring to be processed to move longitudinally horizontally. The feed grinding mechanism (3) can drive the grinding wheel (301) to move laterally horizontally to grind the two end faces of the spring to be processed. The receiving mechanism (2) includes a receiving base plate (210), on which a receiving horizontal driver and a receiving horizontal moving plate (207) are provided. On the receiving horizontal moving plate (207) are a receiving lifting driver and a receiving lifting moving plate (204). On the receiving lifting moving plate (204) are a rotary driver and a receiving transmission mechanism. The receiving transmission mechanism is connected to the receiving rod (201). The compression spring to be processed is fitted onto the receiving rod (201). The receiving horizontal driver is used to drive the receiving horizontal moving plate (207) to move horizontally. The receiving lifting driver is used to drive the receiving lifting moving plate (204) to move vertically. The rotary driver drives the receiving rod (201) to rotate around the longitudinally extending horizontal axis through the receiving transmission mechanism. The feed grinding mechanism (3) includes a grinding base plate (314), on which a grinding driver, a grinding transmission mechanism and a grinding horizontal moving plate (310) are provided. On the grinding horizontal moving plate (310) are a main driver and the grinding wheel (301). The grinding driver drives the grinding horizontal moving plate (310) to move horizontally in the lateral direction through the grinding transmission mechanism. The main driver drives the grinding wheel (301) to rotate. The grinding horizontal moving plate (310) is also provided with a positioning driver, a positioning rod (307), an ejector driver and an ejector rod (304). The positioning driver is used to drive the positioning rod (307) to extend and retract horizontally. The ejector driver is used to drive the ejector rod (304) to extend and retract horizontally. The ejector rod (304) of the feed grinding mechanism (3) on one side is aligned with the positioning rod (307) of the feed grinding mechanism (3) on the other side. The ejector rod (304) on one side pushes one end of the spring to be processed, so that the other end of the spring to be processed abuts against the positioning rod (307) on the other side.

2. The helical compression spring end face grinding system according to claim 1, characterized in that, The spring clamping mechanism (5) includes a clamping base plate (510), on which a clamping driver, a clamping transmission mechanism and a clamping horizontal moving plate (506) are provided. On the clamping horizontal moving plate (506) are a lower clamp (501), an upper clamp (502) and a clamping driver. The clamping driver drives the clamping horizontal moving plate (506) to move longitudinally and horizontally through the clamping transmission mechanism. The clamping driver is used to drive the lower clamp (501) and the upper clamp (502) to move closer to or separate from each other.

3. The helical compression spring end face grinding system according to claim 2, characterized in that, The horizontal moving plate (506) is provided with diamond pens (505) on both sides for dressing the grinding wheel (301).

4. The helical compression spring end face grinding system according to claim 2, characterized in that, The clamping driver and the grinding driver are specifically servo motors, and the clamping transmission mechanism and the grinding transmission mechanism are specifically precision ball screw pairs.

5. The helical compression spring end face grinding system according to claim 1, characterized in that, The base (1) is equipped with a protective cover (7) and a control cabinet (4).

6. The helical compression spring end face grinding system according to any one of claims 1 to 5, characterized in that, A detection mechanism (6) is installed on the base (1). The detection mechanism (6) is located above the spring clamping mechanism (5) and between the two feed grinding mechanisms (3). The detection mechanism (6) is used to calibrate the end face positions of the two grinding wheels (301).

7. The helical compression spring end face grinding system according to claim 6, characterized in that, The detection mechanism (6) includes a support (610), on which a detection lifting driver and a detection lifting moving plate (605) are provided. On the detection lifting moving plate (605), a pin driver and a fixing pin (608) are provided. The pin driver is used to push the fixing pin (608) into the positioning hole. The detection lifting moving plate (605) is also provided with two displacement sensors and two detection rods. The two detection rods are used to contact the two grinding wheels (301) respectively.

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