Automatic grinding and polishing equipment for automobile stamping parts

Abstract

The invention discloses automatic grinding and polishing equipment for automobile stamping parts, and relates to the technical field of automobile stamping part grinding and polishing machining. The automatic grinding and polishing equipment for the automobile stamping parts comprises a machining base, a bearing electric telescopic rod fixedly connected to the right portion of the upper end face of the machining base and a column shaft fixedly connected to the upper end of the bearing electric telescopic rod, and a driving unit used for driving a shaft barrel to rotate is arranged on a transverse carrying frame. A moving and placing mechanism used for clamping the machined disc type stamping workpiece so that the machined disc type stamping workpiece can be rapidly taken down is jointly arranged among the shaft barrel, the transverse carrying frame and the column shaft, it is guaranteed that the stepped disc type stamping workpiece keeps high concentricity in the grinding process through two times of centering adjustment, and the surface polishing uniformity is guaranteed; and through double-face grinding design and cooperation of a limiting spring, it is ensured that an annular grinding disc of the disc type grinding assembly is attached to the surface of the workpiece all the time and automatically adapts to the thickness change of the workpiece, contact gaps are avoided, and continuity, uniformity and high precision of grinding are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of grinding and polishing processing of automobile stamping parts, in particular to automatic grinding and polishing equipment for automobile stamping parts. Background Art

[0002] Disc stamping parts are a common automotive stamping parts. They are mainly used as structural components in automobiles to bear and transmit force or provide specific functions. In the production process of automotive disc stamping parts, punching and tapping of threaded holes are very common operating procedures. These procedures are not only to meet the design and functional requirements, but also involve the needs of assembly and connection. However, metal burrs are often generated during the punching and tapping processes. If these burrs are not processed, they will affect the assembly accuracy and performance. Therefore, it is very important to grind and polish the metal burrs of disc stamping parts after punching and tapping of threaded holes.

[0003] Traditional grinding equipment usually uses a single-point fixture positioning method. Due to the special stepped edge shape of the disc stamping, positioning only by the outer ring or single-point clamping is prone to vibration and displacement during high-speed and high-pressure grinding due to loose fixation, resulting in concentricity deviation between the disc stamping and the processing position, and then eccentric grinding, which further affects the uniformity of surface grinding and polishing.

[0004] In addition, existing grinding equipment can generally only grind one side, and double-sided polishing requires manual or mechanical flipping of the workpiece, which increases processing time and operating steps, and may introduce new positioning errors during the flipping process, resulting in inconsistent processing quality on both sides. Moreover, the contact stroke between the grinding disc and the workpiece in the existing grinding equipment cannot be automatically adjusted according to the amount of material removal, resulting in a gap between the grinding disc and the workpiece surface when the thickness of the workpiece gradually decreases during long-term operation, resulting in insufficient grinding or incomplete contact, which directly affects the processing quality. Summary of the invention

[0005] The present invention provides an automatic grinding and polishing device for automobile stamping parts, which solves the technical problems that traditional grinding equipment usually adopts single-point clamp positioning, which easily causes disc-type stamping parts to vibrate and displace due to loose positioning under high rotation speed and high pressure, thereby causing concentricity deviation, resulting in eccentric grinding, affecting surface uniformity, and that most existing equipment can only grind one side, and the workpiece needs to be turned over for double-sided processing, which increases the operation steps and may introduce new positioning errors, resulting in inconsistent quality of the two sides. At the same time, the grinding disc with a fixed stroke cannot automatically adapt to changes in material removal during long-term operation, resulting in gaps when the thickness of the workpiece is reduced, affecting the grinding effect.

[0006] The present invention provides an automatic grinding and polishing device for automobile stamping parts, comprising a processing seat, a load-bearing electric telescopic rod fixedly connected to the right part of the upper end face of the processing seat, and a column shaft fixedly connected to the upper end of the load-bearing electric telescopic rod, the column shaft is rotatably connected to a transverse carrier on the outside, a vertically arranged mounting through hole is provided on the transverse carrier, a shaft cylinder is rotatably connected in the mounting through hole, a driving unit for driving the shaft cylinder to rotate is arranged on the transverse carrier, the upper end face of the processing seat is rotatably connected to a spline cylinder, the lower end of the shaft cylinder is fixedly connected to a shaft head that cooperates with the spline of the spline cylinder, and a device for cooperating with the shaft head in the spline cylinder to self-center the disc-type stamping workpiece is arranged in the spline cylinder. A centering adjustment mechanism for adjusting the positioning, a double-sided grinding mechanism for synchronously grinding and polishing the bottom cavity surface and the lower bottom surface of the disc stamping workpiece is commonly provided between the spline cylinder and the shaft cylinder, a lower step disk which is colinear with the axis of the spline cylinder and is used to place the disc stamping workpiece is fixedly connected to the upper end surface of the processing seat, and the shaft cylinder is externally connected to an upper step disk which is rotatably connected through a portal frame and is used to cooperate with the lower step disk to perform secondary self-centering adjustment on the disc stamping workpiece and clamp the disc stamping workpiece to limit the position, and a transfer and placement mechanism for clamping the processed disc stamping workpiece so as to quickly remove it is commonly provided between the shaft cylinder, the cross carrier and the column shaft.

[0007] In one possible implementation, the centering adjustment mechanism includes a plurality of spring expansion plates fixedly connected to the outer wall of the spline cylinder at equal intervals in the circumference, and a plurality of mounting grooves equidistantly arranged on the spline cylinder at equal intervals in the circumference and corresponding to the spring expansion plates. The spring expansion plate is rotatably connected to a profiled grinding wheel via a rotating column, and strip grooves are arranged on the groove walls opposite to the mounting grooves, and a sliding column is slidably connected in two corresponding strip grooves. A connecting rod is hinged on the outside of the sliding column, and an end of the connecting rod away from the sliding column is hinged to the upper end surface of the spring expansion plate via a lug, and a synchronous pressing and shifting assembly for pressing the sliding column to move downward synchronously is provided in the spline cylinder.

[0008] In one possible implementation, the double-sided grinding mechanism includes a disc grinding assembly arranged on the outside of the shaft cylinder, and the disc grinding assembly includes two mounting strips symmetrically fixedly connected to the outside of the shaft cylinder, the lower end surfaces of the two mounting strips are fixedly connected with an L-shaped plate, a strip frame is slidingly sleeved on the transverse section of the L-shaped plate, a limit spring is fixedly connected between the strip frame and the L-shaped plate, the lower end surfaces of the two strip frames are fixedly connected with an annular grinding disc, and the same disc grinding assembly is also arranged on the outside of the spline cylinder, and the two disc grinding assemblies are symmetrically distributed up and down.

[0009] In one possible implementation, the shifting mechanism includes two strip boxes that are symmetrically passed through and fixedly connected in the shaft cylinder, each of the strip boxes being slidably connected with a strip plate, the strip plates being fixedly connected to the strip boxes through a fixed block and a top spring, an arc plate being fixedly connected to the side of the strip plate away from the shaft cylinder, an outer wall of the arc plate being provided with a slot along its own arc direction, a shift plate being fixedly connected to the upper end surface of the strip plate and located in the inner cavity of the shaft cylinder, a plurality of slip rings being fixedly connected to the inner cavity of the shaft cylinder at equal distances through a connecting rod, a sliding rod being slidably connected to the sliding ring, a return spring being fixedly connected to one of the slip rings and the sliding rod, a conical ring being fixedly connected to the lower end of the sliding rod for cooperating with the shift plate to drive the arc plate to move toward the shaft cylinder, a touch assembly for driving the sliding rod to move longitudinally is provided between the cross carrier and the column shaft.

[0010] In a possible implementation, the drive unit includes a drive motor fixedly connected to the upper end surface of the cross frame through a fixing rod, the drive motor output shaft passes through the cross frame and is fixedly connected to a gear, and the shaft tube is externally fixedly connected to a gear ring meshing with the gear.

[0011] In one possible implementation, the synchronous pressure-shifting assembly includes a sliding plate slidably connected in the spline cylinder for being pressed against by the shaft head, the sliding plate and the bottom of the spline cylinder cavity are fixedly connected with a push spring, and a plurality of push blocks corresponding to the mounting grooves and slidably arranged in the mounting grooves are fixedly connected at equal intervals on the circumferential outer wall of the sliding plate, and the push blocks are in contact with the upper end of the connecting rod.

[0012] In a possible implementation, a plurality of arc-shaped discharge grooves for timely discharging grinding chips generated during the grinding process are circumferentially and equidistantly formed on opposite sides of the two annular grinding discs.

[0013] In a possible implementation, a plurality of limiting holes are equidistantly formed on the upper end surface of the lower step disk, and a plurality of limiting columns corresponding to and cooperating with the limiting holes are equidistantly fixedly connected to the lower end surface of the upper step disk.

[0014] In one possible implementation, the trigger assembly includes an annular groove provided in the cross-carrier and located outside the column shaft, and a transverse groove provided in the cross-carrier and connected to both the mounting through hole and the annular groove; a push rod is slidably connected in the transverse groove, a return spring is fixedly connected between the push rod and the transverse groove, a conical boss is fixedly connected to the upper end of the sliding rod and cooperates with the end of the push rod away from the column shaft, and an arc-shaped protrusion is fixedly connected to the outside of the column shaft for pressing against the end of the push rod close to the column shaft.

[0015] In a possible implementation, a supporting beam is fixedly connected to the left portion of the transverse carrier, and a supporting plate cooperating with the supporting beam is fixedly connected to the upper end surface of the processing seat.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages: 1. In the present invention, the stepped disc stamping part is first centered by the centering adjustment mechanism, and then the stepped disc stamping part is once again centered and corrected by the combination of the upper step disc and the lower step disc. The two centering adjustments ensure that the disc stamping part maintains high concentricity during the grinding process, avoids eccentric grinding, and ensures the uniformity of surface polishing. At the same time, the combination of the upper step disc and the lower step disc can also inclusively clamp and limit the stepped disc stamping part, thereby ensuring the stability of the stamping part during processing.

[0017] 2. In the present invention, two disc grinding assemblies symmetrically arranged up and down can realize double-sided grinding of stepped disc stamping parts, ensuring the quality consistency of grinding on both sides. At the same time, the limiting spring in the disc grinding assembly is used to push the annular grinding disc to always fit on the elastic grinding surface of the disc stamping part, so that the annular grinding disc can automatically adjust to adapt to the change of thickness of the workpiece during the processing, avoiding the contact gap caused by the change of material removal amount, thereby ensuring the continuity and uniformity of the whole grinding process and improving the grinding processing accuracy.

[0018] 3. In the present invention, by combining the arc plate, the slot, the pry plate, the slide rod, the conical ring, the conical boss, the arc-shaped protrusion and the push rod in the transfer mechanism, the polished disc-type stamping workpiece can be quickly and smoothly taken out from the lower step disc and automatically put down, which greatly facilitates the continuous polishing of the workpiece and ensures the continuity and efficiency of the processing process.

[0019] 4. In the present invention, through the synchronous outward movement of several circumferentially distributed grinding wheels in the centering adjustment mechanism, not only can the stepped disc stamping part be centered and corrected, but the inner hole edge of the workpiece can also be targetedly ground and polished at the same time, thereby further improving the overall accuracy and surface quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the automatic grinding and polishing equipment for automobile stamping parts provided by the present invention.

[0022] Figure 2 The present invention is a schematic cross-sectional structural diagram of the automatic grinding and polishing equipment for automobile stamping parts provided by the present invention.

[0023] Figure 3 The present invention provides Figure 2 Schematic diagram of the enlarged structure of part A in the figure.

[0024] Figure 4 This is a schematic diagram of the specific arrangement structure of the spline cylinder and the shaft cylinder provided by the present invention.

[0025] Figure 5 The present invention provides Figure 4 Schematic diagram of the enlarged structure of part B.

[0026] Figure 6 This is a schematic diagram of the cross-sectional installation structure of the centering adjustment mechanism provided by the present invention.

[0027] Figure 7 This is a schematic cross-sectional view of a partial structure of the transfer mechanism provided by the present invention.

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the transfer mechanism provided by the present invention from a front viewing angle.

[0029] Fig. 9 The present invention provides Figure 8 Schematic diagram of the enlarged structure of part C in the figure.

[0030] Fig.10 This is a schematic diagram of the specific shape of the processing object provided by the present invention.

[0031] The above drawings include the following reference numerals: 1. Processing seat; 2. Electric telescopic rod; 3. Column shaft; 4. Horizontal carrier; 5. Mounting through hole; 6. Driving unit; 61. Driving motor; 62. Gear; 63. Gear ring; 7. Centering adjustment mechanism; 71. Spring telescopic plate; 72. Mounting groove; 73. I-shaped grinding wheel; 74. Strip groove; 75. Sliding column; 76. Connecting rod; 77. Synchronous pressure shifting assembly; 771. Sliding plate; 772. Push spring; 773. Push block; 8. Double-sided grinding mechanism; 81. Disc grinding assembly; 811. Mounting strip plate; 812. L-shaped plate; 813. Strip frame; 814. Limit spring; 8 15. Annular grinding disc; 9. Shifting mechanism; 91. Strip box; 92. Strip plate; 93. Arc plate; 94. Slot; 95. Pulley; 96. Slip ring; 97. Slide rod; 98. Conical ring; 99. Actuator assembly; 991. Annular groove; 992. Transverse groove; 993. Return spring; 994. Conical boss; 995. Arc convex block; 996. Push rod; 10. Spline cylinder; 11. Shaft head; 12. Lower step disk; 13. Shaft cylinder; 14. Upper step disk; 15. Arc lead-out groove; 16. Limit hole; 17. Limit column; 18. Support beam; 19. Support plate. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figure 1 , Figure 2 and Figure 4 The present invention provides a technical solution: an automatic grinding and polishing device for automobile stamping parts, comprising a processing seat 1, a load-bearing electric telescopic rod 2 fixedly connected to the right part of the upper end surface of the processing seat 1, and a column shaft 3 fixedly connected to the upper end of the load-bearing electric telescopic rod 2, the column shaft 3 is externally rotatably connected to a transverse carrier 4, the transverse carrier 4 is provided with a vertically arranged mounting through hole 5, a shaft cylinder 13 is rotatably connected in the mounting through hole 5, a driving unit 6 for driving the shaft cylinder 13 to rotate is arranged on the transverse carrier 4, a spline cylinder 10 is rotatably connected to the upper end surface of the processing seat 1, and a spline cylinder 10 is fixedly connected to the lower end of the shaft cylinder 13 with a spline cylinder 10. A matching shaft head 11, a centering adjustment mechanism 7 is provided in the spline cylinder 10 for cooperating with the shaft head 11 to adjust the self-centering position of the disc-type stamping workpiece, a double-sided grinding mechanism 8 is provided between the spline cylinder 10 and the shaft cylinder 13 for synchronously grinding and polishing the bottom cavity surface and the lower bottom surface of the disc-type stamping workpiece, a transfer mechanism 9 is provided between the shaft cylinder 13, the cross carrier 4 and the column shaft 3 for clamping the processed disc-type stamping workpiece so as to quickly remove it, a supporting beam 18 is fixedly connected to the left part of the cross carrier 4, and a support plate 19 cooperating with the supporting beam 18 is fixedly connected to the upper end surface of the processing seat 1.

[0034] See also Figure 1 and Figure 2 In this embodiment, the upper end surface of the processing seat 1 is fixedly connected with a lower step disk 12 which is colinear with the axis of the spline cylinder 10 and is used to place the disc stamping workpiece. The shaft cylinder 13 is externally rotatably connected with a portal frame. The lower end surface of the portal frame is fixedly connected with an upper step disk 14 which is used to cooperate with the lower step disk 12 to facilitate secondary self-centering adjustment of the disc stamping workpiece and clamp the disc stamping workpiece to limit the position. The upper end surface of the lower step disk 12 is provided with a plurality of limiting holes 16 equidistantly arranged in the circumferential direction. The lower end surface of the upper step disk 14 is fixedly connected with a plurality of limiting columns 17 which correspond to and cooperate with the limiting holes 16 and are equidistantly arranged in the circumferential direction.

[0035] See also Figure 4 , Figure 5 and Figure 6The centering adjustment mechanism 7 includes a plurality of spring expansion plates 71 fixedly connected to the outer wall of the spline cylinder 10 at equal intervals in the circumferential direction, and a plurality of mounting grooves 72 equidistantly arranged on the spline cylinder 10 and corresponding to the spring expansion plates 71. The spring expansion plate 71 is rotatably connected to a grinding wheel 73 through a rotating column. A strip groove 74 is arranged on the groove wall opposite to the mounting groove 72. A sliding column 75 is slidably connected to the two corresponding strip grooves 74. A connecting rod 76 is hinged on the outside of the sliding column 75. The end of the connecting rod 76 away from the sliding column 75 is connected by a The lug is hinged on the upper end surface of the spring expansion plate 71, and a synchronous pressure-shifting assembly 77 for pressing the sliding column 75 to move downward synchronously is provided in the spline cylinder 10. The synchronous pressure-shifting assembly 77 includes a sliding plate 771 slidably connected in the spline cylinder 10 for being pressed by the shaft head 11. The sliding plate 771 and the bottom of the spline cylinder 10 cavity are fixedly connected with a push spring 772. The circumferential outer wall of the sliding plate 771 is equidistantly fixedly connected with a plurality of push blocks 773 corresponding to the mounting groove 72 and slidably arranged in the mounting groove 72. The push blocks 773 are in contact with the upper end of the connecting rod 76.

[0036] The initial position of the cross carriage 4 is at the three o'clock position of the column shaft 3, and the carrying electric telescopic rod 2 is at the longest length at this time. The disc-type stamping workpiece is placed on the lower step plate 12, and then the cross carriage 4 is controlled to rotate manually or through an external pushing device, and the cross carriage 4 is rotated to the nine o'clock position of the column shaft 3. Then, the carrying electric telescopic rod 2 is controlled to contract and drive the cross carriage 4 to gradually move downward. The cross carriage 4 then drives the shaft cylinder 13 to move downward, and the shaft cylinder 13 drives the shaft head 11 to move downward, so that the shaft head 11 is gradually inserted into the spline cylinder 10. At this time, the end of the shaft head 11 touches the upper surface of the sliding plate 771, and the sliding plate 771 is pushed downward by the shaft head 11 and drives The push block 773 moves downward, and the push block 773 then presses the upper end of the connecting rod 76, thereby pushing the sliding column 75 to slide downward in the strip groove 74. During the downward movement of the upper end of the connecting rod 76, its lower end will move in the direction away from the spline cylinder 10, thereby pushing the spring telescopic plate 71 to extend. The spring telescopic plate 71 then drives the type grinding wheel 73 to move in the direction away from the spline cylinder 10. When several circumferentially distributed type grinding wheels 73 hit the edge of the middle circular hole of the disc stamping workpiece during the process of synchronously moving away from the outside, the disc stamping workpiece can be self-centering adjusted so that the disc stamping workpiece and the spline cylinder 10 are on the same axis.

[0037] When the shaft cylinder 13 moves downward, it will also drive the upper step disk 14 to move downward synchronously through the gantry. When the work-shaped grinding wheel 73 moves outward to abut against the edge of the circular hole in the middle of the disc-type stamping workpiece, the upper step disk 14 also moves downward to abut against the upper surface of the disc-type stamping workpiece. At this time, the upper step disk 14 will also drive the limiting column 17 to be inserted into the limiting hole 16. The upper step disk 14 and the lower step disk 12 are combined with each other to clamp the disc-type stamping workpiece. At the same time, the position of the disc-type stamping workpiece can be further centered, corrected and adjusted, and then the disc-type stamping workpiece can be inclusively positioned to achieve circumferential stability constraints. The concentric circle adjustment operation formed by the double positioning points can ensure that the processing position of the disc-type stamping workpiece is accurate and without shaking, thereby improving the overall concentricity.

[0038] When the cross carriage 4 moves downward, it will also drive the supporting beam 18 to move synchronously. When the positioning adjustment and clamping limit of the disc-type stamping workpiece are completed, the cross carriage 4 also moves downward to the lowest position. At this time, the supporting beam 18 moves downward and contacts the upper part of the support plate 19, thereby supporting the left part of the cross carriage 4 after the downward movement, thereby improving the overall stability of the cross carriage 4.

[0039] See also Figure 2 and Figure 3 In this embodiment, the double-sided grinding mechanism 8 includes a disc grinding assembly 81 arranged on the outside of the shaft cylinder 13, and the disc grinding assembly 81 includes two mounting strips 811 symmetrically fixedly connected to the outside of the shaft cylinder 13. The lower end surfaces of the two mounting strips 811 are fixedly connected with L-shaped plates 812. A strip frame 813 is slidably sleeved on the transverse section of the L-shaped plate 812. A limit spring 814 is fixedly connected between the strip frame 813 and the L-shaped plate 812. An annular grinding disc 815 is fixedly connected to the lower end surfaces of the two strip frames 813. The same disc grinding assembly 81 is also arranged on the outside of the spline cylinder 10. The two disc grinding assemblies 81 are symmetrically distributed up and down. The opposite sides of the two annular grinding discs 815 are circumferentially equidistantly provided with a plurality of arc-shaped guide grooves 15 for timely discharging the grinding chips in the grinding process.

[0040] See also Figure 4 The driving unit 6 includes a driving motor 61 fixedly connected to the upper end surface of the horizontal frame 4 through a fixing rod. The output shaft of the driving motor 61 passes through the horizontal frame 4 and is fixedly connected to a gear 62. The outside of the shaft tube 13 is fixedly connected to a gear ring 63 meshing with the gear 62.

[0041] When the upper step disc 14 and the lower step disc 12 clamp the disc-type stamping workpiece, the upper and lower annular grinding discs 815 respectively contact the bottom cavity surface and the lower bottom surface of the disc-type stamping workpiece, and the driving motor 61 is controlled to drive the gear 62 to rotate, and the gear 62 then drives the shaft cylinder 13 to rotate through the gear ring 63, and the shaft cylinder 13 then drives the spline cylinder 10 connected with the spline of the shaft head 11 to rotate through the shaft head 11, and the shaft cylinder 13 and the spline cylinder 10 rotate together and at the same time, they will respectively pass through the mounting strip plate 811 and the L-shaped plate 8 12 and the strip frame 813 drive the respectively installed annular grinding discs 815 to rotate, and the two annular grinding discs 815 can respectively grind and polish the bottom cavity surface and the lower bottom surface of the disc stamping workpiece. During the grinding process, the limit spring 814 pushes the strip frame 813 to always apply pressure to the annular grinding disc 815, ensuring that the annular grinding disc 815 is always in contact with the surface of the disc stamping workpiece, and then the arc-shaped guide groove 15 is used to automatically and timely discharge the metal chips generated during the grinding process, thereby improving the grinding effect.

[0042] The rotation of the spline cylinder 10 will also drive the spring expansion plate 71 to rotate, and the spring expansion plate 71 will then drive the type grinding wheel 73 to rotate synchronously. During the revolution of the type grinding wheel 73, it will also rotate along the path of the circular hole edge in the middle of the disc-type stamping workpiece, so that after the centering adjustment of the disc-type stamping workpiece is completed, the central circular hole of the disc-type stamping workpiece can be targetedly ground and polished.

[0043] See also Figure 4 , Figure 5 , Figure 8 and Fig. 9 In this embodiment, the transfer mechanism 9 includes two strip boxes 91 symmetrically passing through and fixedly connected to the shaft cylinder 13, and strip plates 92 are slidably connected in the strip boxes 91. The strip plates 92 are fixedly connected to the strip boxes 91 through a fixed block and a top spring. The side of the strip plate 92 away from the shaft cylinder 13 is fixedly connected to an arc plate 93, and the outer wall of the arc plate 93 is provided with a card groove 94 along its own arc direction. The upper end surface of the strip plate 92 and located in the inner cavity of the shaft cylinder 13 is fixedly connected to a shift plate 95, and the inner cavity of the shaft cylinder 13 A plurality of slip rings 96 are fixedly connected at equal intervals through connecting rods, and a slide rod 97 is slidably connected in the slip rings 96. A return spring is fixedly connected between one of the slip rings 96 and the slide rod 97. A conical ring 98 is fixedly connected at the lower end of the slide rod 97 for cooperating with the shift plate 95 to drive the arc plate 93 to move toward the shaft tube 13. A trigger assembly 99 for driving the slide rod 97 to move longitudinally is provided between the cross carrier 4 and the column shaft 3. The lower part of the arc plate 93 is a wedge-shaped shape that is narrow at the bottom and wide at the top.

[0044] See also Figure 7 and Figure 8The trigger assembly 99 includes an annular groove 991 opened in the cross frame 4 and located outside the column shaft 3, and a transverse groove 992 opened in the cross frame 4 and connected to the mounting through hole 5 and the annular groove 991. A push rod 996 is slidably connected in the transverse groove 992, and a return spring 993 is fixedly connected between the push rod 996 and the transverse groove 992. A conical boss 994 that cooperates with the end of the push rod 996 away from the column shaft 3 is fixedly connected to the upper end of the slide rod 97, and an arc-shaped protrusion 995 that is used to press the end of the push rod 996 close to the column shaft 3 is fixedly connected to the outside of the column shaft 3.

[0045] When the shaft cylinder 13 moves downward, it will also drive the arc plate 93 to move synchronously through the strip box 91 and the strip plate 92. The wedge-shaped inclined surface at the lower part of the arc plate 93 allows the arc plate 93 to smoothly enter the circular hole in the middle of the disc stamping workpiece, avoiding the situation where the lower end of the arc plate 93 touches the disc stamping workpiece and causes it to get stuck. When the arc plate 93 moves downward to the lowest position as the shaft cylinder 13 moves downward, the arc plate 93 will drive the slot 94 to get stuck on the outside of the edge of the circular hole in the middle of the disc stamping workpiece.

[0046] After the disc-type stamping workpiece is polished, the electric telescopic rod 2 is controlled to extend and push the horizontal carrier 4 to move up, and the horizontal carrier 4 then drives the shaft cylinder 13 to move up. The upward movement of the shaft cylinder 13 drives the arc plate 93 to move up through the strip box 91 and the strip plate 92, and the arc plate 93 then drives the card slot 94 to move up, so that the card slot 94 moves up a distance relative to the disc-type stamping workpiece. In this process, the shaft cylinder 13 will also drive the upper step disk 14 and the shaft head 11 to move up synchronously, so that the upper step disk 14 moves up and moves away from the disc-type stamping workpiece. , so that the shaft head 11 gradually moves out of the spline cylinder 10, and the shaft head 11 moves up to make the centering adjustment mechanism 7 reverse and reset, and finally the grinding wheel 73 in the centering adjustment mechanism 7 separates from the disc stamping workpiece and moves to the initial position. At this time, the lower groove wall of the slot 94 conflicts with the lower bottom surface of the disc stamping workpiece, and then the arc plate 93 drives the disc stamping workpiece to move upward through the slot 94 until the disc stamping workpiece moves up and is completely removed from the lower step disk 12. At this time, the cross carriage 4 also moves up to the highest position.

[0047] Then, the cross carriage 4 is driven manually or by an external pushing device to rotate around the column axis 3, and the cross carriage 4 then drives the push rod 996 to rotate around the column axis 3. When the push rod 996 rotates to the point where its end close to the column axis 3 contacts the arc-shaped protrusion 995, the arc-shaped protrusion 995 squeezes the push rod 996 to move the push rod 996 away from the column axis 3. The end of the push rod 996 away from the column axis 3 then contacts the conical surface of the conical boss 994, thereby squeezing the conical boss 994 to move downward. The conical boss 994 then pushes the slide bar 97 downward, and the slide bar 97 then drives the conical ring 98 downward. During the downward movement of the conical ring 98, its inner conical surface contacts the upper end of the dial plate 95 and squeezes the dial plate 95, causing the two dial plates 95 to move closer to each other.

[0048] The shift plate 95 then drives the arc plate 93 to move toward the shaft tube 13 through the strip plate 92, and the arc plate 93 drives the slot 94 to separate from the disc-type stamping workpiece, so that the disc-type stamping workpiece is detached, and the processed disc-type stamping workpiece can be automatically taken out and put down. At this time, the cross carriage 4 moves to the three-point position of the column shaft 3, that is, the cross carriage 4 is reset to the initial position; then the above-mentioned operation steps of placing the disc-type stamping workpiece into the lower step disc 12 and the subsequent operation steps can be repeated again, and the next disc-type stamping workpiece can be ground and polished.

[0049] See also Figure 1-Figure 10When working, first put the disc stamping workpiece into the lower step disk 12, then push the cross carrier 4 to rotate around the column shaft 3, so that the cross carrier 4 moves from the initial three o'clock position on the column shaft 3 to the nine o'clock position, and the cross carrier 4 drives the shaft cylinder 13 to move to just above the spline cylinder 10, and then control the load-bearing electric telescopic rod 2 to move downward, the load-bearing electric telescopic rod 2 drives the cross carrier 4 to move downward, and the cross carrier 4 drives the shaft cylinder 13 to move downward, and the shaft cylinder 13 then drives the shaft head 11 to insert into the spline cylinder 10 and triggers the centering adjustment mechanism 7 to operate, and the centering adjustment mechanism 7 performs self-centering correction adjustment on the disc stamping workpiece. At the same time, the shaft cylinder 13 will also drive the upper step disk 14 to move downward and cooperate with the lower step disk 12 to clamp the disc stamping workpiece, and the combination of the upper step disk 14 and the lower step disk 12 will once again perform centering correction adjustment on the disc stamping workpiece. After centering adjustment, the drive unit 6 is controlled to drive the shaft cylinder 13 to rotate, and the shaft cylinder 13 then drives the double-sided grinding mechanism 8 to operate, and the bottom cavity surface and the lower bottom surface of the disc-type stamping workpiece are simultaneously polished and polished. Finally, after the disc-type stamping workpiece is polished and polished, the load-bearing electric telescopic rod 2 is controlled to drive the cross carriage 4 to move upward. During the upward movement of the cross carriage 4, the disc-type stamping workpiece is taken out from the lower step disk 12 through the transfer mechanism 9 until the cross carriage 4 moves up to the initial height, and then the cross carriage 4 is pushed to rotate around the column axis 3. During this process, the transfer mechanism 9 will be triggered to run, and when the cross carriage 4 rotates to the three-point position of the column axis 3 again, the transfer mechanism 9 can automatically put down the taken disc-type stamping workpiece; then, the next disc-type stamping workpiece can be placed in the lower step disk 12, and the above steps are repeated.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic grinding and polishing device for automobile stamping parts, comprising a processing seat (1), a load-bearing electric telescopic rod (2) fixedly connected to the right part of the upper end surface of the processing seat (1), and a column shaft (3) fixedly connected to the upper end of the load-bearing electric telescopic rod (2), characterized in that: The column shaft (3) is externally rotatably connected to a transverse carrier (4), a vertically arranged mounting through hole (5) is provided on the transverse carrier (4), a shaft cylinder (13) is rotatably connected in the mounting through hole (5), a driving unit (6) for driving the shaft cylinder (13) to rotate is provided on the transverse carrier (4), a spline cylinder (10) is rotatably connected to the upper end surface of the processing seat (1), a shaft head (11) spline-matched with the spline cylinder (10) is fixedly connected to the lower end of the shaft cylinder (13), and a centering adjustment mechanism (7) is provided in the spline cylinder (10) for cooperating with the shaft head (11) so as to adjust the self-centering position of the disc-type stamping workpiece; A double-sided grinding mechanism (8) for synchronously grinding and polishing the bottom cavity surface and the lower bottom surface of the disc-type stamping workpiece is provided between the spline cylinder (10) and the shaft cylinder (13); The upper end surface of the processing seat (1) is fixedly connected with a lower stepped disc (12) which is colinear with the axis of the spline cylinder (10) and is used to place the disc-type stamping workpiece; the outer part of the shaft cylinder (13) is rotatably connected with an upper stepped disc (14) which is used to cooperate with the lower stepped disc (12) to adjust the disc-type stamping workpiece for secondary self-centering and clamp the disc-type stamping workpiece to limit position; A transfer mechanism (9) for clamping a processed disc-type stamping workpiece so as to quickly remove it is provided between the shaft cylinder (13), the transverse carrier (4) and the column shaft (3).

2. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1 is characterized in that: The centering adjustment mechanism (7) comprises a plurality of spring expansion plates (71) fixedly connected to the outer wall of the spline cylinder (10) at equal circumferential distances, and a plurality of mounting grooves (72) arranged on the spline cylinder (10) at equal circumferential distances and corresponding to the spring expansion plates (71); the spring expansion plate (71) is rotatably connected to a grinding wheel (73) via a rotating column; a strip groove (74) is arranged on the groove wall opposite to the mounting groove (72); a sliding column (75) is slidably connected to two corresponding strip grooves (74); a connecting rod (76) is hingedly connected to the outside of the sliding column (75); an end of the connecting rod (76) away from the sliding column (75) is hingedly connected to the upper end surface of the spring expansion plate (71) via a lug; and a synchronous pressing and moving assembly (77) for pressing the sliding column (75) to move downward synchronously is arranged in the spline cylinder (10).

3. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1 is characterized in that: The double-sided grinding mechanism (8) comprises a disc grinding assembly (81) arranged outside the shaft cylinder (13), and the disc grinding assembly (81) comprises two mounting strips (811) symmetrically fixedly connected to the outside of the shaft cylinder (13), the lower end surfaces of the two mounting strips (811) are fixedly connected to an L-shaped plate (812), a strip frame (813) is slidably sleeved on the transverse section of the L-shaped plate (812), a limit spring (814) is fixedly connected between the strip frame (813) and the L-shaped plate (812), and an annular grinding disc (815) is fixedly connected to the lower end surfaces of the two strip frames (813), and the same disc grinding assembly (81) is also arranged outside the spline cylinder (10), and the two disc grinding assemblies (81) are symmetrically distributed up and down.

4. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1 is characterized in that: The shifting mechanism (9) comprises two strip boxes (91) symmetrically penetrating and fixedly connected to the shaft cylinder (13), each of the strip boxes (91) being slidably connected with a strip plate (92), the strip plate (92) being fixedly connected with the strip box (91) via a fixing block and having a top spring, a side of the strip plate (92) away from the shaft cylinder (13) being fixedly connected with an arc plate (93), an outer wall of the arc plate (93) being provided with a clamping groove (94) along its own arc direction, and a shifting plate (95) being fixedly connected to the upper end surface of the strip plate (92) and located in the inner cavity of the shaft cylinder (13) ), the inner cavity of the shaft cylinder (13) is equidistantly fixedly connected with a plurality of slip rings (96) through a connecting rod, a sliding rod (97) is slidably connected in the slip rings (96), a return spring is fixedly connected between one of the slip rings (96) and the sliding rod (97), a conical ring (98) is fixedly connected at the lower end of the sliding rod (97) for cooperating with the shift plate (95) so as to drive the arc plate (93) to move toward the shaft cylinder (13), and a trigger assembly (99) for driving the sliding rod (97) to move longitudinally is arranged between the transverse carrier (4) and the column shaft (3).

5. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1 is characterized in that: The drive unit (6) comprises a drive motor (61) fixedly connected to the upper end surface of the transverse carrier (4) via a fixing rod, the output shaft of the drive motor (61) passes through the transverse carrier (4) and is fixedly connected to a gear (62), and the shaft tube (13) is externally fixedly connected to a gear ring (63) meshing with the gear (62).

6. The automatic grinding and polishing equipment for automobile stamping parts according to claim 2 is characterized in that: The synchronous pressure-shifting assembly (77) includes a sliding plate (771) slidably connected in the spline cylinder (10) for being pressed by the shaft head (11); the sliding plate (771) and the bottom of the spline cylinder (10) are fixedly connected with a push spring (772); a plurality of push blocks (773) corresponding to the mounting groove (72) and slidably arranged in the mounting groove (72) are fixedly connected to the circumferential outer wall of the sliding plate (771) at equal intervals; the push blocks (773) are in contact with the upper end of the connecting rod (76).

7. The automatic grinding and polishing equipment for automobile stamping parts according to claim 3 is characterized in that: A plurality of arc-shaped discharge grooves (15) for timely discharging grinding chips generated during the grinding process are provided at equal intervals in the circumferential direction on opposite sides of the two annular grinding discs (815).

8. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1 is characterized in that: The upper end surface of the lower step disk (12) is provided with a plurality of circumferentially equidistant limiting holes (16), and the lower end surface of the upper step disk (14) is fixedly connected with a plurality of circumferentially equidistant limiting posts (17) corresponding to and cooperating with the limiting holes (16).

9. The automatic grinding and polishing equipment for automobile stamping parts according to claim 4 is characterized in that: The actuating assembly (99) comprises an annular groove (991) provided in the transverse carrier (4) and located outside the column shaft (3), and a transverse groove (992) provided in the transverse carrier (4) and connected to both the mounting through hole (5) and the annular groove (991); a push rod (996) is slidably connected in the transverse groove (992); a return spring (993) is fixedly connected between the push rod (996) and the transverse groove (992); a conical boss (994) is fixedly connected to the upper end of the slide rod (97) and cooperates with the end of the push rod (996) away from the column shaft (3); and an arc-shaped protrusion (995) is fixedly connected to the outside of the column shaft (3) for pressing the end of the push rod (996) close to the column shaft (3).

10. The automatic grinding and polishing equipment for automobile stamping parts according to claim 1, characterized in that: The left part of the transverse carrier (4) is fixedly connected with a supporting beam (18), and the upper end surface of the processing seat (1) is fixedly connected with a supporting plate (19) matched with the supporting beam (18).

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