An automatic loading and unloading mechanism for fine grinding of ball screw support bearings

Abstract

The present invention belongs to the field of fine grinding technology, and in particular to an automatic loading and unloading mechanism for fine grinding of ball screw-supported bearings. The following scheme is proposed, which specifically includes a machine base, a fine grinder is installed on the top of the machine base, and a fine grinding box is provided on the side of the fine grinder, a fine grinding wheel and a grinding liquid nozzle are provided inside the fine grinding box, a retractable rotating motor is installed on the side of the fine grinding box, a feeding guide is provided on the side of the fine grinding box, and an inclined limit bracket is fixedly installed on the outside of the feeding guide. The present invention is provided with a feeding mechanism and a unloading mechanism connected to the feeding mechanism. The loading and unloading process of the bearing ring fine grinding is in a closed state, and is transferred laterally by a pushing assembly and a positioning assembly, which effectively avoids the risk of the bearing ring falling and being damaged, and the workpiece transfer stroke is short, which effectively reduces the waiting time for loading and unloading the workpiece, and improves the working efficiency of loading and unloading during the bearing fine grinding process.

Description

Technical Field

[0001] The present invention relates to the technical field of fine grinding, and in particular to an automatic loading and unloading mechanism for fine grinding of a ball screw support bearing. Background Art

[0002] As a core component in mechanical transmission, the ball screw is an ideal device for converting rotary motion into linear motion and vice versa. Its basic structure consists of a screw, nut, ball recirculation system, and a reversing mechanism. By converting the sliding friction of a traditional trapezoidal lead screw into rolling friction, it significantly improves transmission efficiency, motion accuracy, and reversibility. These unique mechanical properties have led to its widespread application in high-precision applications such as CNC machine tools, industrial robots, and aerospace equipment.

[0003] In the manufacturing process of ball screw support bearings, the fine grinding of the bearing rings is a critical step in ensuring the accuracy of the final product. This process eliminates macroscopic defects (such as surface waviness and roundness error) generated during the rough grinding stage and strictly controls the depth of subsurface damage. Existing technologies generally use a clamping jaw loading and unloading mechanism, which relies on the clamping force and static friction of the workpiece surface to achieve positioning. However, when faced with annular bearing rings, this clamping method has significant drawbacks: on the one hand, the geometric center of the annular workpiece is difficult to accurately locate, which can easily lead to eccentric clamping; on the other hand, the friction coefficient is reduced in an environment lubricated by grinding fluid, significantly increasing the risk of the workpiece slipping. According to industry statistics, the processing scrap rate caused by such clamping failures can reach 3%-5%, and there is a safety hazard of damaging precision grinding equipment.

[0004] In response to the above technical bottlenecks, the present invention proposes a new automatic loading and unloading mechanism for ball screw support bearing fine grinding. Through an innovative positioning and clamping solution, it effectively solves the problems of insufficient positioning accuracy and the risk of workpiece falling in traditional clamping methods. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes an automatic loading and unloading mechanism for fine grinding of ball screw support bearings.

[0006] The present invention proposes an automatic loading and unloading mechanism for fine grinding of ball screw-supported bearings, comprising a machine base, a fine grinder installed on the top of the machine base, a fine grinding box provided on the side of the fine grinder, a fine grinding wheel and a grinding fluid nozzle provided inside the fine grinding box, a retractable rotating motor provided on the side of the fine grinding box, a feeding guide groove provided on the side of the fine grinding box, and an inclined limiting bracket fixedly installed on the outer side of the feeding guide groove, a feeding cylinder fixedly installed on the top of the limiting bracket, and a feeding mechanism slidably installed inside the limiting bracket, and the inner portion of the limiting bracket is provided with a feeding mechanism. The part is also equipped with a displacement sensor for detecting the downward stroke of the feeding mechanism, a horizontally movable positioning component is provided inside the feeding mechanism, the top of the feeding mechanism is fixedly connected to the feeding cylinder, and the bottom of the feeding mechanism is inserted into the inside of the feeding guide groove, the middle part of the machine base is sequentially equipped with a feeding conveyor belt assembly and a unloading conveyor belt assembly, a feeding mechanism is installed between the side of the feeding conveyor belt assembly and the side of the feeding mechanism, and a pushing component is provided at the bottom end of the feeding mechanism, and a unloading mechanism is installed between the top of the unloading conveyor belt assembly and the bottom of the feeding mechanism.

[0007] Preferably in the present invention, the feeding mechanism includes a feeding guide groove, an inclined feeding groove arranged at the upper end of the feeding guide groove, and a waiting groove arranged at the lower end of the feeding guide groove. The end of the waiting groove is provided with a material guide assembly corresponding to the inlet of the feeding mechanism, and the pushing assembly is installed at the outer end position of the material guide assembly.

[0008] Preferably in the present invention, the feed conveyor belt assembly includes a feed conveyor belt, and a feed baffle fixedly mounted on the feed conveyor belt, and the side of the feed baffle corresponds to the oblique feed trough, and a feed cylinder is installed on the other side of the feed baffle, and a feed push plate is installed on the output end of the feed cylinder, and the feed conveyor belt assembly also includes a photoelectric sensor arranged at the entrance of the feed guide trough.

[0009] Preferably in the present invention, the material guiding assembly includes a material guiding cylinder connected to the pushing assembly and the positioning assembly, and a closing plate slidably mounted on the side of the material guiding cylinder, and a closing cylinder driving the closing plate to move back and forth is installed on the side of the material trough.

[0010] Preferably in the present invention, the pushing assembly includes an annular bracket fixedly mounted on the outer end of the material guide cylinder, and a pushing cylinder fixedly mounted on the annular bracket, the output end of the pushing cylinder is fixedly mounted with a pushing core rod, the pushing assembly also includes a pushing ring slidably mounted inside the material guide cylinder, the pushing core rod is slidably connected to the pushing ring, and a reset spring is installed between the pushing ring and the annular bracket.

[0011] In the present invention, preferably, an annular groove is provided on the inner side of the push ring, and a core rod end cover is slidably installed inside the annular groove, the core rod end cover is fixedly connected to the push core rod, and the outer walls of the push core rod and the core rod end cover are provided with mounting grooves distributed in an annular array, and an axial positioning part with a V-shaped structure is rotatably installed inside the mounting groove, and a spring is installed between the axial positioning part and the mounting groove.

[0012] Preferably in the present invention, the feeding mechanism includes a feeding bracket, and a feeding cavity with an annular structure is provided at the bottom of the feeding bracket, the positioning assembly is installed at the axial center position of the feeding cavity, and a plurality of dispersion holes connected to the feeding cavity are also provided in the middle of the feeding bracket, and a three-way solenoid valve is fixedly installed on the side of the confluence of the dispersion holes, and the inlet of the three-way solenoid valve is connected to the air inlet pipe and the liquid inlet pipe in sequence.

[0013] Preferably in the present invention, the positioning assembly includes a positioning cylinder installed on the outside of the feeding bracket, and a material return ring installed on the inner wall of the feeding cavity, the output end of the positioning cylinder is fixedly installed with a rotating shaft, and the outside of the rotating shaft is fixedly installed with a positioning core rod, the middle part of the positioning core rod is provided with a positioning seat with a truncated cone structure, and the outside of the positioning seat is rotated by a torsion spring with multiple positioning claws with fan-shaped structures, and the outside of the output shaft of the rotating motor is provided with an extrusion ring adapted to the positioning seat.

[0014] Preferably in the present invention, the unloading mechanism includes a support shaft fixedly installed at a position below the limiting bracket, and a U-shaped discharge trough fixedly installed above the unloading conveyor belt assembly. A movable bucket with a U-shaped structure is installed on the outer side of the support shaft through a torsion spring, and the top of the movable bucket is adapted to the outer side of the feeding cavity. A discharge chute is fixedly installed at the end of the U-shaped discharge trough, and the discharge chute is slidably connected to the bottom of the movable bucket.

[0015] Preferably in the present invention, the unloading conveyor belt assembly includes a unloading conveyor belt and a unloading baffle fixedly installed on the unloading conveyor belt, a unloading cylinder is installed on the side of the feed baffle, and a unloading push plate is installed on the output end of the unloading cylinder.

[0016] Compared with the prior art, the present invention provides an automatic loading and unloading mechanism for fine grinding of ball screw support bearings, which has the following beneficial effects:

[0017] In the present invention, a feeding mechanism and a unloading mechanism connected to the feeding mechanism are provided. The bearing ring is in a closed state during the loading and unloading processes of fine grinding, and is transferred laterally by a pushing assembly and a positioning assembly. Among them, when the bearing ring moves horizontally on the feeding conveyor belt assembly to the side of the feeding mechanism, it is transferred laterally to the feeding mechanism. The bearing ring is rolled in the feeding mechanism to the feeding side position of the feeding mechanism, and is pushed laterally to the feeding mechanism by the pushing assembly. At this time, the bearing ring is fixed on the positioning assembly. Subsequently, the feeding cylinder drives the feeding mechanism to move downward along the direction of the limit bracket, and the bottom end of the feeding mechanism is inserted into the feeding guide groove. The bottom end of the feeding mechanism blocks the opening of the feeding guide groove, and then rotates The rotating motor moves laterally, and the outer end of the output shaft of the rotating motor is inserted into one end of the positioning component, which fixes the bearing ring and drives the bearing ring to rotate, and cooperates with the fine grinding wheel and the fine grinding wheel to effectively fine grind the bearing ring. When the fine grinding of the bearing ring is completed, the feeding mechanism is reset to the position above the limit bracket. After the positioning component pushes the bearing ring away, the bearing ring falls into the unloading mechanism and is transferred to the unloading conveyor belt assembly to complete the loading and unloading operations of the bearing ring. There is no clamping and hanging state during the movement of the bearing ring, which effectively avoids the risk of the bearing ring falling and being damaged, and the workpiece transfer stroke is short, which effectively reduces the waiting time for loading and unloading the workpiece, and improves the work efficiency of loading and unloading during the bearing fine grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an automatic loading and unloading mechanism for ball screw support bearing fine grinding proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the downward movement of the feeding mechanism of the automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of a limiting bracket of an automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0021] Figure 4 This is a schematic structural diagram of an automatic loading and unloading mechanism for ball screw supported bearing fine grinding proposed by the present invention;

[0022] Figure 5 This is a schematic structural diagram of a feeding mechanism of an automatic loading and unloading mechanism for fine grinding of a ball screw-supported bearing proposed by the present invention;

[0023] Figure 6 This is a schematic structural diagram of a material guide assembly of an automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0024] Figure 7This is a schematic diagram of the feeding mechanism structure of an automatic loading and unloading mechanism for ball screw support bearing fine grinding proposed by the present invention;

[0025] Figure 8 This is a schematic diagram of the distribution of the pusher assembly and the positioning assembly of the automatic loading and unloading mechanism for fine grinding of ball screw-supported bearings proposed by the present invention;

[0026] Figure 9 This is a schematic diagram of the workpiece transfer of the pusher assembly and positioning assembly of the automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0027] Figure 10 This is a schematic structural diagram of a positioning assembly of an automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0028] Figure 11 This is a side structural schematic diagram of a positioning assembly of an automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0029] Figure 12 This is a schematic structural diagram of a pusher assembly of an automatic loading and unloading mechanism for ball screw-supported bearing fine grinding proposed by the present invention;

[0030] Figure 13 This is a schematic cross-sectional view of the pusher assembly of an automatic loading and unloading mechanism for fine grinding of a ball screw-supported bearing proposed by the present invention.

[0031] In the figure: 1 base, 2 fine grinding box, 3 feeding guide trough, 4 unloading mechanism, 41 U-shaped discharge trough, 42 discharge chute, 43 support shaft, 44 movable bucket, 5 unloading conveyor belt assembly, 6 feeding conveyor belt assembly, 7 feeding mechanism, 71 feeding guide trough, 72 oblique feeding trough, 73 waiting trough, 74 material guide assembly, 741 material guide cylinder, 742 closing plate, 743 closing cylinder, 75 pushing assembly, 751 pushing cylinder, 752 annular bracket, 753 pushing core rod, 754 pushing ring, 755 annular groove, 7 56 core rod end cover, 757 mounting groove, 758 axis positioning part, 759 spring, 8 feed cylinder, 9 feeding mechanism, 91 feeding bracket, 92 feeding chamber, 93 dispersion hole, 94 three-way solenoid valve, 95 positioning assembly, 951 positioning cylinder, 952 rotating shaft, 953 positioning core rod, 954 positioning seat, 955 positioning claw, 956 stripping ring, 10 limit bracket, 11 rotating motor, 12 fine grinding wheel, 13 fine grinder. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] Reference Figure 1-13 , an automatic loading and unloading mechanism for fine grinding of ball screw supported bearings, comprising a machine base 1, a fine grinder 13 is mounted on the top of the machine base 1, and a fine grinding box 2 is arranged on the side of the fine grinder 13, a fine grinding wheel 12 and a grinding liquid nozzle are arranged inside the fine grinding box 2, a solenoid valve for controlling the flow is installed in the middle of the grinding liquid nozzle, a retractable rotating motor 11 is installed on the side of the fine grinding box 2, a feeding guide groove 3 is arranged on the side of the fine grinding box 2, and an inclined limiting bracket 10 is fixedly mounted on the outside of the feeding guide groove 3, a feeding cylinder 8 is fixedly mounted on the top of the limiting bracket 10, and a feeding mechanism is slidably installed inside the limiting bracket 10 9. A displacement sensor for detecting the downward stroke of the feeding mechanism 9 is also installed inside the limiting bracket 10. A horizontally movable positioning component 95 is provided inside the feeding mechanism 9. The top of the feeding mechanism 9 is fixedly connected to the feeding cylinder 8, and the bottom of the feeding mechanism 9 is inserted into the inside of the feeding guide groove 3. The feeding conveyor belt assembly 6 and the unloading conveyor belt assembly 5 are installed in sequence in the middle of the machine base 1. The feeding mechanism 7 is installed between the side of the feeding conveyor belt assembly 6 and the side of the feeding mechanism 9, and the bottom of the feeding mechanism 7 is provided with a pushing component 75. The unloading mechanism 4 is installed between the top of the unloading conveyor belt assembly 5 and the bottom of the feeding mechanism 9.

[0034] In the present invention, a feeding mechanism 7 and a unloading mechanism 4 connected to the feeding mechanism 9 are provided. The bearing ring is in a closed state during the loading and unloading process of fine grinding, and is transferred laterally by the pushing assembly 75 and the positioning assembly 95. Among them, when the bearing ring moves horizontally on the feeding conveyor belt assembly 6 to the side of the feeding mechanism 7, it is transferred laterally to the feeding mechanism 7. The bearing ring is rolled in the feeding mechanism 7 and transported to the feeding side position of the feeding mechanism 9, and is pushed laterally into the feeding mechanism 9 by the pushing assembly 75. At this time, the bearing ring is fixed on the positioning assembly 95. Subsequently, the feeding cylinder 8 drives the feeding mechanism 9 to move downward along the direction of the limiting bracket 10. A displacement sensor for detecting the downward pressure stroke of the feeding mechanism 9 is also installed inside the limiting bracket 10 to ensure that the contact pressure between the fine grinding wheel 12 and the bearing ring is constant, and the bottom end of the feeding mechanism 9 is inserted into the feeding guide groove. 3, the bottom end of the feeding mechanism 9 blocks the opening of the feeding guide groove 3, and then the rotating motor 11 moves horizontally, and the outer end of the output shaft of the rotating motor 11 is inserted into one end of the positioning component 95, fixes the bearing ring and drives the bearing ring to rotate, and cooperates with the fine grinding wheel 12, and the fine grinding wheel 12 to effectively fine grind the bearing ring. When the fine grinding of the bearing ring is completed, the feeding mechanism 9 is reset to the position above the limit bracket 10, and the positioning component 95 pushes the bearing ring away, and the bearing ring falls into the unloading mechanism 4 and is transferred to the unloading conveyor belt component 5, completing the loading and unloading operation of the bearing ring. There is no clamping and hanging state during the movement of the bearing ring, which effectively avoids the risk of the bearing ring falling and being damaged, and the workpiece transfer stroke is short, which effectively reduces the waiting time for loading and unloading the workpiece, and improves the work efficiency of loading and unloading during the bearing fine grinding process.

[0035] As a further solution in the present invention, the feeding mechanism 7 includes a feeding guide groove 71, an oblique feeding groove 72 arranged at the upper end of the feeding guide groove 71, and a waiting groove 73 arranged at the lower end of the feeding guide groove 71. The end of the waiting groove 73 is provided with a guide assembly 74 corresponding to the inlet of the feeding mechanism 9, and the pushing assembly 75 is installed at the outer end position of the guide assembly 74. The feeding conveyor belt assembly 6 also includes a photoelectric sensor arranged at the entrance of the feeding guide groove 71, which detects the bearing ring in place signal and then triggers the pushing action of the feeding cylinder. In the present invention, the bearing ring is pushed from the feeding conveyor belt assembly 6 to the oblique feeding groove 72, and is converted into a horizontal rolling conveyance in the oblique feeding groove 72. After being conveyed by the feeding guide groove 71, it is horizontally arranged in the waiting groove 73. The bearing ring at the outermost end enters the guide assembly 74, and the pushing assembly 75 pushes it horizontally to the feeding mechanism 9, and cooperates with the positioning assembly 95 to complete the workpiece transfer operation.

[0036] As a further solution in the present invention, the feed conveyor belt assembly 6 includes a feed conveyor belt, and a feed baffle fixedly installed on the feed conveyor belt, and the side of the feed baffle corresponds to the oblique feed trough 72, and the other side of the feed baffle is installed with a feed cylinder, and the output end of the feed cylinder is installed with a feed push plate. In the present invention, the workpiece moves horizontally on the feed conveyor belt, stops when encountering the feed baffle, and then the feed cylinder drives the feed push plate to move horizontally, and the workpiece is pushed into the oblique feed trough 72, and slides along the inner wall of the oblique feed trough 72 to the feed guide groove 71 and rolls and transfers.

[0037] As a further solution in the present invention, the material guide assembly 74 includes a material guide cylinder 741 connecting the pushing assembly 75 and the positioning assembly 95, and a closing plate 742 slidably installed on the side of the material guide cylinder 741. The side of the material waiting trough 73 is installed with a closing cylinder 743 that drives the closing plate 742 to move back and forth. In the present invention, when the bearing ring moves to the inside of the material guide cylinder 741, the two sides of the bearing ring are respectively limited by the closing plate 742 and the pushing assembly 75 and are in an upright state. Then, the pushing assembly 75 approaches the bearing ring and fixes it. Then, the closing plate 742 moves backward under the action of the closing cylinder 743. At this time, the pushing assembly 75 can drive the bearing ring to move toward the positioning assembly 95.

[0038] As a further solution in the present invention, the pushing assembly 75 includes an annular bracket 752 fixedly mounted on the outer end of the guide cylinder 741, and a pushing cylinder 751 fixedly mounted on the annular bracket 752. The pushing assembly 75 also includes a pressure relay for controlling the pushing cylinder 751. The output end of the pushing cylinder 751 is fixedly mounted with a pushing core rod 753. The pushing assembly 75 also includes a pushing ring 754 slidably mounted inside the guide cylinder 741. The pushing core rod 753 is slidably connected to the pushing ring 754, and a reset spring is installed between the pushing ring 754 and the annular bracket 752. In the present invention, the pushing ring 754 is pushed in the initial state. The core rod 753 is flush with the outer surface of the push ring 754, and the compressed return spring is in a contracted state. When pushing, the push cylinder 751 drives the push core rod 753 to move forward. At this time, the other side of the bearing ring is blocked by the closing plate 742, and the push core rod 753 is inserted into the inner side of the bearing ring to fix it. Then the closing plate 742 is opened, and the push ring 754 is used to push the bearing ring to the positioning assembly 95 until the other side of the bearing ring is set on the outer position of the positioning assembly 95, completing the positioning transfer operation of the bearing ring. Afterwards, the push cylinder 751 drives the push core rod 753 and the push ring 754 to reset.

[0039] As a further solution in the present invention, an annular groove 755 is provided on the inner side of the push ring 754, and a core rod end cover 756 is slidably installed inside the annular groove 755. The core rod end cover 756 is fixedly connected to the push core rod 753. The outer walls of the push core rod 753 and the core rod end cover 756 are provided with an annular array of mounting grooves 757, and a V-shaped shaft positioning member 758 is rotatably installed inside the mounting groove 757. A spring is installed between the shaft positioning member 758 and the mounting groove 757. 759. In the present invention, one end of the axial positioning member 758 generates an outward thrust under the action of the spring 759. After one end of the pushing core rod 753 is inserted into the interior of the bearing ring, the axial positioning member 758 then moves outward inside the bearing ring, and the core rod end cover 756 continues to move toward the innermost end of the annular groove 755 until the end of the core rod end cover 756 located inside the annular groove 755 is subjected to downward pressure. At this time, the other end of the axial positioning member 758 is located at the inner ring of the bearing ring and expands outward to When the maximum pressure is applied, the annularly distributed axial positioning member 758 can lift the bearing ring away from the guide cylinder 741. At this time, the positioning component 95, the bearing ring, the push core rod 753 and the push ring 754 are at the same axial height. When the bearing ring is pushed toward the positioning component 95, the outer wall thereof is prevented from contacting and generating friction with the guide cylinder 741. When the other end of the bearing ring is sleeved on the outside of the positioning component 95, the push core rod 753 and the core rod end cover 756 slide backward inside the push ring 754, and the pusher The ring 754 maintains an outward thrust under the action of the return spring, thereby pushing the axial positioning member 758 back to the installation groove 757 until the core rod end cover 756 moves to the outermost end of the annular groove 755 and drives the pushing ring 754 to retreat synchronously. At this time, the pushing core rod 753 is flush with the outer surface of the pushing ring 754, so that the outer ring of the bearing ring is in a suspended state when the pushing assembly 75 moves toward the positioning assembly 95, avoiding friction damage to the surface of the bearing ring and improving the stability of the bearing ring during the transfer process.

[0040] As a further solution in the present invention, the feeding mechanism 9 includes a feeding bracket 91, and a feeding cavity 92 of an annular structure is provided at the bottom of the feeding bracket 91, a positioning assembly 95 is installed at the axial position of the feeding cavity 92, and a plurality of dispersion holes 93 connected to the feeding cavity 92 are also provided in the middle of the feeding bracket 91, and a three-way solenoid valve 94 is fixedly installed on the side of the gathering place of the dispersion holes 93, and the inlet of the three-way solenoid valve 94 is connected to the air inlet pipe and the liquid inlet pipe in sequence. In the present invention, when the feeding mechanism 9 is in the highest position, the positioning assembly 95 is installed at the axial position of the feeding cavity 92. The component 95 and the pushing component 75 are coaxially arranged, and the positioning component 95 drives the bearing ring to move toward the inside of the fine grinding box 2. The fine grinding wheel 12 can be inserted into the feeding cavity 92 to fine-grind the bearing ring outside the positioning component 95. At the same time, grinding fluid is sprayed from the dispersion hole 93 to cool and fine-grind the outside of the bearing ring. When the fine grinding is completed, the bearing ring and the inside of the feeding cavity 92 are blown clean by air until the feeding mechanism 9 moves to the highest position to perform the unloading action, thereby reducing the loss and pollution of the grinding fluid.

[0041] As a further solution in the present invention, the positioning assembly 95 includes a positioning cylinder 951 installed on the outside of the feeding bracket 91, and a return ring 956 installed on the inner wall of the feeding chamber 92. The output end of the positioning cylinder 951 is fixedly installed with a rotating shaft 952, and the outside of the rotating shaft 952 is fixedly installed with a positioning core rod 953. The middle part of the positioning core rod 953 is provided with a positioning seat 954 with a truncated cone structure, and the outside of the positioning seat 954 is rotated by a torsion spring and a plurality of positioning claws 955 with a fan-shaped structure are installed. The outside of the output shaft of the rotating motor 11 is provided with an extrusion ring adapted to the positioning seat 954. In the present invention, the pushing assembly 75 drives the bearing ring to move toward the positioning assembly 95, and the positioning core rod 953 is inserted into the inside of the bearing ring. At this time, the plurality of positioning claws 955 move backward until they are aligned with the bearing The inner wall of the ring is engaged, and when the pushing assembly 75 retracts, the bearing ring is stopped on the positioning assembly 95, and then the positioning assembly 95 moves backward until the bearing ring is in the center area of ​​the feeding cavity 92. When the positioning assembly 95 drives the bearing ring to move into the fine grinding box 2, the output shaft of the rotating motor 11 approaches the positioning assembly 95, and the extrusion ring pushes the inner wall of the positioning claw 955 to generate outward expansion pressure, completing the fine grinding preparation operation, and driving the bearing ring to rotate during the fine grinding process, thereby improving the stability of the bearing ring during the fine grinding process. After the fine grinding is completed, the rotating motor 11 is separated from the positioning assembly 95, and when the positioning assembly 95 moves to the highest position, the positioning core rod 953 continues to move backward, and the bearing ring is pushed away by the stripping ring 956, and the bearing ring then falls into the unloading mechanism 4 to complete the unloading operation.

[0042] As a further solution in the present invention, the unloading mechanism 4 includes a support shaft 43 fixedly installed at a position below the limit bracket 10, and a U-shaped discharge chute 41 fixedly installed above the unloading conveyor belt assembly 5. The outer side of the support shaft 43 is provided with a movable bucket 44 of a U-shaped structure through a torsion spring, and the top of the movable bucket 44 is adapted to the outer side of the feeding cavity 92, and the end of the U-shaped discharge chute 41 is fixedly installed with a discharge chute 42, and the discharge chute 42 is slidably connected to the bottom of the movable bucket 44. In the present invention, when unloading, the bearing ring falls from the feeding cavity 92 of the feeding mechanism 9, and is guided by the movable bucket 44 and the discharge chute 42 to the U-shaped discharge chute 41, and falls into the unloading conveyor belt assembly 5 at the bottom of the U-shaped discharge chute 41 for horizontal conveying and unloading operation. When the feeding mechanism 9 moves downward, the movable bucket 44 is squeezed to rotate downward and shrink, and the opening of the movable bucket 44 is blocked by the bottom of the feeding mechanism 9 to prevent grinding fluid and the like from splashing into the movable bucket 44.

[0043] As a further solution in the present invention, the unloading conveyor belt assembly 5 includes a unloading conveyor belt, and a unloading baffle fixedly installed on the unloading conveyor belt. A unloading cylinder is installed on the side of the feed baffle, and a unloading push plate is installed at the output end of the unloading cylinder. In the present invention, the workpiece is transferred to the unloading conveyor belt through the unloading mechanism 4 and moves horizontally. When it moves to the outermost end, it is stopped by the unloading baffle, and then pushed away from the unloading conveyor belt by the unloading cylinder and the unloading push plate and transferred to the next process.

[0044] During use, when the bearing ring moves horizontally on the feed conveyor belt assembly 6 to the side of the feed mechanism 7, it is transferred laterally to the feed mechanism 7. The bearing ring is rolled in the feed mechanism 7 and transported to the feed side position of the feed mechanism 9. It is pushed laterally into the feed mechanism 9 by the pushing assembly 75. At this time, the bearing ring is fixed on the positioning assembly 95. Subsequently, the feed cylinder 8 drives the feed mechanism 9 to move downward along the direction of the limit bracket 10. The bottom end of the feed mechanism 9 is inserted into the feed guide groove 3. The bottom end of the feed mechanism 9 opens the opening of the feed guide groove 3. After the sealing is performed, the rotating motor 11 moves laterally, and the outer end of the output shaft of the rotating motor 11 is inserted into one end of the positioning component 95, fixing the bearing ring and driving the bearing ring to rotate, cooperating with the fine grinding wheel 12, the fine grinding wheel 12 effectively grinds the bearing ring. When the fine grinding of the bearing ring is completed, the feeding mechanism 9 is reset to the position above the limit bracket 10. After the positioning component 95 pushes the bearing ring away, the bearing ring falls into the unloading mechanism 4 and is transferred to the unloading conveyor belt component 5, completing the loading and unloading operations of the bearing ring.

[0045] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic loading and unloading mechanism for fine grinding of ball screw support bearings, comprising a machine base (1), a fine grinder (13) being mounted on the top of the machine base (1), a fine grinding box (2) being arranged on the side of the fine grinder (13), a fine grinding wheel (12) and a grinding fluid nozzle being arranged inside the fine grinding box (2), and a retractable rotating motor (11) being mounted on the side of the fine grinding box (2), characterized in that: A feeding guide groove (3) is provided on the side of the fine grinding box (2), and a tilted limiting bracket (10) is fixedly installed on the outside of the feeding guide groove (3), a feeding cylinder (8) is fixedly installed on the top of the limiting bracket (10), and a feeding mechanism (9) is slidably installed inside the limiting bracket (10), a displacement sensor for detecting the downward stroke of the feeding mechanism 9 is also installed inside the limiting bracket (10), and a horizontally movable positioning component (95) is provided inside the feeding mechanism (9). The feeding mechanism (9) The top of the machine base (1) is fixedly connected to the feed cylinder (8), and the bottom of the feeding mechanism (9) is inserted into the inside of the feeding guide groove (3). The middle part of the machine base (1) is sequentially installed with a feed conveyor belt assembly (6) and a discharge conveyor belt assembly (5). A feed mechanism (7) is installed between the side of the feed conveyor belt assembly (6) and the side of the feeding mechanism (9), and a pusher assembly (75) is provided at the bottom end of the feed mechanism (7). A discharge mechanism (4) is installed between the top of the discharge conveyor belt assembly (5) and the bottom of the feeding mechanism (9). The feeding mechanism (7) includes a feeding guide groove (71), an oblique feeding groove (72) arranged at the upper end of the feeding guide groove (71), and a waiting groove (73) arranged at the lower end of the feeding guide groove (71). The end of the waiting groove (73) is provided with a guide assembly (74) corresponding to the inlet of the feeding mechanism (9), and a pushing assembly (75) is installed at the outer end position of the guide assembly (74). The feeding conveyor belt assembly (6) includes a feeding conveyor belt and a feeding baffle fixedly installed on the feeding conveyor belt, and the side of the feeding baffle is aligned with the oblique feeding groove (7 2) Correspondingly, a feed cylinder is installed on the other side of the feed baffle, and a feed push plate is installed on the output end of the feed cylinder. The feed conveyor belt assembly (6) also includes a photoelectric sensor arranged at the entrance of the feed guide groove (71). The material guide assembly (74) includes a material guide cylinder (741) connected to the push assembly (75) and the positioning assembly (95), and a closing plate (742) slidably installed on the side of the material guide cylinder (741). A closing cylinder (743) for driving the closing plate (742) to move forward and backward is installed on the side of the material waiting trough (73).

2. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 1 is characterized in that: The pushing assembly (75) includes an annular bracket (752) fixedly mounted on the outer end of the material guide cylinder (741), and a pushing cylinder (751) fixedly mounted on the annular bracket (752), a pushing core rod (753) fixedly mounted on the output end of the pushing cylinder (751), and the pushing assembly (75) also includes a pushing ring (754) slidably mounted inside the material guide cylinder (741), the pushing core rod (753) and the pushing ring (754) are slidably connected, and a return spring is installed between the pushing ring (754) and the annular bracket (752).

3. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 2, characterized in that: An annular groove (755) is provided on the inner side of the push ring (754), and a core rod end cover (756) is slidably installed inside the annular groove (755), and the core rod end cover (756) is fixedly connected to the push core rod (753), and the outer walls of the push core rod (753) and the core rod end cover (756) are provided with mounting grooves (757) distributed in an annular array, and an axial positioning member (758) of a V-shaped structure is rotatably installed inside the mounting groove (757), and a spring (759) is installed between the axial positioning member (758) and the mounting groove (757).

4. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 1, characterized in that: The feeding mechanism (9) includes a feeding bracket (91), and a feeding cavity (92) with an annular structure is provided at the bottom of the feeding bracket (91), the positioning assembly (95) is installed at the axial center position of the feeding cavity (92), and a plurality of dispersion holes (93) connected to the feeding cavity (92) are also provided in the middle of the feeding bracket (91), and a three-way solenoid valve (94) is fixedly installed on the side of the gathering point of the dispersion holes (93), and the inlet of the three-way solenoid valve (94) is connected to the air inlet pipe and the liquid inlet pipe in sequence.

5. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 4, characterized in that: The positioning assembly (95) includes a positioning cylinder (951) installed on the outside of the feeding bracket (91) and a material removal ring (956) installed on the inner wall of the feeding cavity (92). The output end of the positioning cylinder (951) is fixedly installed with a rotating shaft (952), and the outer side of the rotating shaft (952) is fixedly installed with a positioning core rod (953). The middle part of the positioning core rod (953) is provided with a positioning seat (954) with a truncated cone structure, and the outer side of the positioning seat (954) is rotatably installed with a plurality of fan-shaped positioning claws (955). The outer side of the output shaft of the rotating motor (11) is provided with an extrusion ring adapted to the positioning seat (954).

6. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 5, characterized in that: The unloading mechanism (4) comprises a support shaft (43) fixedly mounted below the limiting bracket (10), and a U-shaped discharge trough (41) fixedly mounted above the unloading conveyor belt assembly (5); a movable bucket (44) of a U-shaped structure is mounted on the outer side of the support shaft (43) via a torsion spring, and the top of the movable bucket (44) is adapted to the outer side of the feeding cavity (92); a discharge chute (42) is fixedly mounted at the end of the U-shaped discharge trough (41), and the discharge chute (42) is slidably connected to the bottom of the movable bucket (44).

7. The automatic loading and unloading mechanism for fine grinding of ball screw support bearings according to claim 1, characterized in that: The unloading conveyor belt assembly (5) comprises an unloading conveyor belt and an unloading baffle fixedly mounted on the unloading conveyor belt, a unloading cylinder is mounted on the side of the feed baffle, and an unloading push plate is mounted on the output end of the unloading cylinder.

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