An automatic grinding and polishing equipment for automotive stamping parts

Abstract

This invention discloses an automatic grinding and polishing equipment for automotive stamping parts, relating to the field of grinding and polishing processing technology for automotive stamping parts. The automatic grinding and polishing equipment for automotive stamping parts includes a processing base, a load-bearing electric telescopic rod fixedly connected to the right side of the upper end face of the processing base, and a column shaft fixedly connected to the upper end of the load-bearing electric telescopic rod. A drive unit for rotating the shaft cylinder is installed on the cross-mounted frame. A transfer mechanism for clamping the processed disc-shaped stamping workpiece for quick removal is jointly provided between the shaft cylinder, the cross-mounted frame, and the column shaft. This invention ensures high concentricity of the stepped disc-shaped stamping part during grinding through two centering adjustments, guaranteeing uniform surface polishing. Furthermore, through a double-sided grinding design and the cooperation of limiting springs, it ensures that the annular grinding disc of the disc grinding assembly always fits the workpiece surface and automatically adapts to changes in workpiece thickness, avoiding contact gaps and ensuring continuous, uniform, and high-precision grinding.

Description

Technical Field

[0001] This invention relates to the field of grinding and polishing technology for automotive stamping parts, specifically to an automatic grinding and polishing equipment for automotive stamping parts. Background Technology

[0002] Disc stampings are a common type of automotive stamping, primarily used as structural components in automobiles to bear and transmit forces or provide specific functions. Punching and tapping are very common processes in the production of automotive disc stampings. These processes not only meet design and functional requirements but also involve assembly and connection needs. However, metal burrs are often generated during punching and tapping. If these burrs are not treated, they will affect assembly accuracy and performance. Therefore, it is crucial to grind and polish the disc stampings after punching and tapping to remove these burrs.

[0003] Traditional grinding equipment typically uses a single-point clamping positioning method. Due to the special stepped edge shape of disc stamping parts, positioning by clamping only the outer ring or a single point is prone to vibration and displacement during high-speed and high-pressure grinding due to insecure fixing. This results in a concentricity deviation between the disc stamping parts and the processing position, leading to eccentric grinding and further affecting the uniformity of surface grinding and polishing.

[0004] In addition, existing grinding equipment can generally only grind one side. When polishing both sides, the workpiece needs to be turned manually or mechanically, which increases processing time and operation steps. It may also introduce new positioning errors during the turning process, resulting in inconsistent processing quality between the two sides. Moreover, the contact stroke between the grinding disc and the workpiece in existing grinding equipment cannot be automatically adjusted according to the amount of material removed. As the workpiece thickness gradually decreases during long-term operation, gaps will form between the grinding disc and the workpiece surface, resulting in incomplete grinding or incomplete contact, which directly affects the processing quality. Summary of the Invention

[0005] This invention provides an automatic grinding and polishing equipment for automotive stamping parts. It solves the technical problems of traditional grinding equipment, which typically uses single-point clamping for positioning. This can easily lead to vibration and displacement of disc stamping parts under high speed and high pressure due to unstable positioning, resulting in concentricity deviation, eccentric grinding, and affecting surface uniformity. Furthermore, existing equipment can only grind one side, requiring the workpiece to be flipped for double-sided processing, which increases the operation steps and may introduce new positioning errors, resulting in inconsistent quality on both sides. At the same time, the fixed-stroke grinding disc cannot automatically adapt to changes in material removal during long-term operation, causing gaps when the workpiece thickness decreases, which affects the grinding effect.

[0006] This invention provides an automatic grinding and polishing device for automotive stamping parts, comprising a processing base, a load-bearing electric telescopic rod fixedly connected to the right side of the upper end face of the processing base, and a column shaft fixedly connected to the upper end of the load-bearing electric telescopic rod. A horizontal support frame is rotatably connected to the external side of the column shaft. The horizontal support frame has vertically arranged mounting through holes, and a shaft cylinder is rotatably connected to the mounting through holes. A drive unit for rotating the shaft cylinder is provided on the horizontal support frame. A splined cylinder is rotatably connected to the upper end face of the processing base. A shaft head that splines and mates with the splined cylinder is fixedly connected to the lower end of the shaft cylinder. The splined cylinder contains a part for mates with the shaft head to self-center the disc-type stamped workpiece. The positioning and centering adjustment mechanism includes a double-sided grinding mechanism between the splined cylinder and the shaft cylinder for simultaneously grinding and polishing the bottom cavity surface and the bottom surface of the disc stamping workpiece. A lower stepped plate, collinear with the axis of the splined cylinder and used to place the disc stamping workpiece, is fixedly connected to the upper end face of the machining seat. An upper stepped plate, which cooperates with the lower stepped plate to perform secondary self-centering adjustment of the disc stamping workpiece and clamp and limit its position, is rotatably connected to the outside of the shaft cylinder through a portal frame. A transfer mechanism is provided between the shaft cylinder, the cross support frame, and the column shaft to hold the processed disc stamping workpiece for quick removal.

[0007] In one possible implementation, the centering adjustment mechanism includes several spring telescopic plates circumferentially and equidistantly fixed to the outer wall of the splined cylinder, and several mounting slots circumferentially and equidistantly opened on the splined cylinder and corresponding to the spring telescopic plates. An I-shaped grinding wheel is rotatably connected to the spring telescopic plates via a rotating column. A strip groove is opened on the opposite side wall of the mounting slot. A sliding column is slidably connected in two corresponding strip grooves. A connecting rod is hinged to the outside of the sliding column. The end of the connecting rod away from the sliding column is hinged to the upper surface of the spring telescopic plate via a lug. A synchronous pressing and shifting assembly is provided in the splined cylinder to press the sliding column and move it downward synchronously.

[0008] In one possible implementation, the double-sided polishing mechanism includes a disc polishing assembly disposed outside the shaft cylinder. The disc polishing assembly includes two mounting strips symmetrically and fixedly connected to the outside of the shaft cylinder. An L-shaped plate is fixedly connected to the lower end face of each of the two mounting strips. A strip frame is slidably fitted on the transverse section of the L-shaped plate. A limit spring is fixedly connected between the strip frame and the L-shaped plate. An annular polishing disc is fixedly connected to the lower end face of the two strip frames. The same disc polishing assembly is also disposed outside the spline cylinder. The two disc polishing assemblies are symmetrically distributed vertically.

[0009] In one possible implementation, the transfer mechanism includes two symmetrical strip boxes fixedly connected through the shaft cylinder. Each strip box has a strip plate slidably connected to it. A top spring is fixedly connected between the strip plate and the strip box via a fixing block. An arc plate is fixedly connected to the side of the strip plate away from the shaft cylinder. A groove is formed on the outer wall of the arc plate along its own arc direction. A lever is fixedly connected to the upper surface of the strip plate and located in the inner cavity of the shaft cylinder. Several slip rings are fixedly connected at equal intervals in the inner cavity of the shaft cylinder via a connecting rod. A slide rod is slidably connected to each slip ring. A return spring is fixedly connected between one slip ring and the slide rod. A conical ring is fixedly connected to the lower end of the slide rod to cooperate with the lever to drive the arc plate to move closer to the shaft cylinder. An actuation component for driving the slide rod to move longitudinally is provided between the cross support frame and the column shaft.

[0010] In one possible implementation, the drive unit includes a drive motor fixedly connected to the upper end face of the cross frame via a fixing rod, the output shaft of the drive motor passing through the cross frame and fixedly connected to a gear, and a gear ring meshing with the gear being fixedly connected to the outside of the shaft sleeve.

[0011] In one possible implementation, the synchronous pressing and shifting assembly includes a slide plate slidably connected in the splined cylinder for being pressed by the shaft head. The slide plate and the bottom of the splined cylinder cavity are fixedly connected together with a push spring. A plurality of push blocks corresponding to the mounting groove and slidably disposed in the mounting groove are fixedly connected at equal intervals on the outer circumference of the slide plate. The push blocks are in contact with the upper end of the connecting rod.

[0012] In one possible implementation, the two annular grinding discs are provided with a plurality of arc-shaped discharge grooves at equal intervals on opposite sides to discharge grinding debris in a timely manner during the grinding process.

[0013] In one possible implementation, the upper end face of the lower stepped plate is provided with a plurality of circumferentially equidistant limiting holes, and the lower end face of the upper stepped plate is fixedly connected with a plurality of limiting posts corresponding to and cooperating with the limiting holes.

[0014] In one possible implementation, the actuating component includes an annular groove formed in the cross frame and located outside the column shaft, and a transverse groove formed in the cross frame that communicates with both the mounting through hole and the annular groove. A push rod is slidably connected in the transverse groove, and a return spring is fixedly connected between the push rod and the transverse groove. A tapered boss that mates with the end of the push rod away from the column shaft is fixedly connected to the upper end of the slide rod. An arc-shaped protrusion for pressing the end of the push rod near the column shaft is fixedly connected outside the column shaft.

[0015] In one possible implementation, a support beam is fixedly connected to the left side of the cross frame, and a support plate that cooperates with the support beam is fixedly connected to the upper end face of the processing seat.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages:

[0017] 1. In this invention, the stepped disc stamping part is first centered by a centering adjustment mechanism, and then the stepped disc stamping part is centered and corrected again by the combination of the upper and lower stepped discs. 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 and lower stepped discs can also provide inclusive clamping and limiting for the stepped disc stamping part, thereby ensuring the stability of the stamping part during processing.

[0018] 2. In this invention, two symmetrically arranged disc grinding components enable double-sided grinding of stepped disc stampings, ensuring consistent grinding quality on both sides. Simultaneously, the limiting springs in the disc grinding components keep the annular grinding disc in constant contact with the elastic grinding surface of the disc stamping, allowing the annular grinding disc to automatically adjust to adapt to changes in workpiece thickness during processing. This avoids contact gaps caused by variations in material removal, thus ensuring the continuity and uniformity of the entire grinding process and improving grinding precision.

[0019] 3. In this invention, the arc plate, slot, lever, slide bar, conical ring, conical boss, arc-shaped protrusion and top rod in the transfer mechanism are combined with each other to realize the quick and smooth removal and automatic placement of the polished disc stamping workpiece from the lower stepped disc, which greatly facilitates the continuous polishing of the workpiece and ensures the continuity and efficiency of the processing.

[0020] 4. In this invention, through the synchronous outward movement of several circumferentially distributed I-shaped 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 targeted for grinding and polishing, thereby further improving the overall accuracy and surface quality of the workpiece. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the automatic grinding and polishing equipment for automotive stamping parts provided by the present invention.

[0023] Figure 2 This is a cross-sectional structural diagram of the automatic grinding and polishing equipment for automotive stamping parts provided by the present invention.

[0024] Figure 3Provided by the present invention Figure 2 An enlarged schematic diagram of part A of the structure.

[0025] Figure 4 A schematic diagram showing the specific arrangement of the splined cylinder and shaft cylinder provided by the present invention.

[0026] Figure 5 Provided by the present invention Figure 4 An enlarged schematic diagram of part B of the structure.

[0027] Figure 6 This is a cross-sectional view of the installation structure of the centering adjustment mechanism provided by the present invention.

[0028] Figure 7 This is a cross-sectional schematic diagram of a portion of the transfer mechanism provided by the present invention.

[0029] Figure 8 This is a front-view cross-sectional structural diagram of the transfer mechanism provided by the present invention.

[0030] Figure 9 Provided by the present invention Figure 8 An enlarged schematic diagram of part C in the diagram.

[0031] Figure 10 A schematic diagram showing the specific shape of the processing object provided by the present invention.

[0032] The above figures include the following reference numerals:

[0033] 1. Machining base; 2. Bearing electric telescopic rod; 3. Column shaft; 4. Horizontal support frame; 5. Mounting through hole; 6. Drive unit; 61. Drive motor; 62. Gear; 63. Gear ring; 7. Centering adjustment mechanism; 71. Spring telescopic plate; 72. Mounting slot; 73. I-shaped grinding wheel; 74. Strip groove; 75. Sliding column; 76. Connecting rod; 77. Synchronous pressing and 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. Limiting spring; 8 15. Annular grinding disc; 9. Transfer mechanism; 91. Strip box; 92. Strip plate; 93. Arc plate; 94. Slot; 95. Pulley; 96. Slip ring; 97. Slide rod; 98. Conical ring; 99. Actuating component; 991. Annular groove; 992. Transverse groove; 993. Return spring; 994. Conical boss; 995. Arc-shaped protrusion; 996. Top rod; 10. Splined cylinder; 11. Shaft head; 12. Lower stepped plate; 13. Shaft cylinder; 14. Upper stepped plate; 15. Arc-shaped guide groove; 16. Limiting hole; 17. Limiting post; 18. Support beam; 19. Support plate. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Please see Figure 1 , Figure 2 and Figure 4 This invention provides a technical solution: an automatic grinding and polishing equipment for automotive stamping parts, comprising a processing base 1, a load-bearing electric telescopic rod 2 fixedly connected to the right side of the upper end face of the processing base 1, and a column shaft 3 fixedly connected to the upper end of the load-bearing electric telescopic rod 2. A horizontal support frame 4 is rotatably connected to the outside of the column shaft 3. A vertically arranged mounting through hole 5 is provided on the horizontal support frame 4, and a shaft cylinder 13 is rotatably connected in the mounting through hole 5. A drive unit 6 for driving the shaft cylinder 13 to rotate is provided on the horizontal support frame 4. A splined cylinder 10 is rotatably connected to the upper end face of the processing base 1, and a splined connection is fixedly connected to the lower end of the shaft cylinder 13. The cooperating shaft head 11 and splined cylinder 10 are provided with a centering adjustment mechanism 7 for cooperating with the shaft head 11 to self-center and position the disc stamping workpiece. The splined cylinder 10 and shaft cylinder 13 are jointly provided with a double-sided grinding mechanism 8 for synchronously grinding and polishing the bottom cavity surface and the bottom surface of the disc stamping workpiece. The shaft cylinder 13, the cross support frame 4 and the column shaft 3 are jointly provided with a transfer mechanism 9 for clamping the processed disc stamping workpiece so that it can be quickly removed. The left side of the cross support frame 4 is fixedly connected with a support beam 18, and the upper end face of the processing seat 1 is fixedly connected with a support plate 19 that cooperates with the support beam 18.

[0036] Please see Figure 1 and Figure 2 In this embodiment, a lower stepped plate 12, which is collinear with the axis of the splined cylinder 10 and is used to place the disc stamping workpiece, is fixedly connected to the upper end face of the processing base 1. A gantry frame is rotatably connected to the outside of the shaft cylinder 13. An upper stepped plate 14, which is used to cooperate with the lower stepped plate 12 for secondary self-centering adjustment of the disc stamping workpiece and clamping and limiting the disc stamping workpiece, is fixedly connected to the lower end face of the gantry frame. A number of limiting holes 16 are equidistantly opened in the circumferential direction on the upper end face of the lower stepped plate 12. A number of limiting posts 17, which correspond to and cooperate with the limiting holes 16, are fixedly connected in the circumferential direction on the lower end face of the upper stepped plate 14.

[0037] Please see Figure 4 , Figure 5 and Figure 6The centering adjustment mechanism 7 includes several spring telescopic plates 71 circumferentially and equidistantly fixed to the outer wall of the spline cylinder 10, and several mounting slots 72 circumferentially and equidistantly opened on the spline cylinder 10 and corresponding to the spring telescopic plates 71. A type grinding wheel 73 is rotatably connected to the spring telescopic plates 71 via a rotating column. Strip grooves 74 are opened on opposite sides of the mounting slots 72. A sliding column 75 is slidably connected to two corresponding strip grooves 74. A connecting rod 76 is hinged to the outside of the sliding column 75. The end of the connecting rod 76 away from the sliding column 75 is connected via... The lug is hinged to the upper end face of the spring telescopic plate 71. The splined cylinder 10 is provided with a synchronous pressing and shifting assembly 77 that moves the sliding column 75 downward in sync. The synchronous pressing and shifting assembly 77 includes a sliding plate 771 that is slidably connected in the splined cylinder 10 for being pressed by the shaft head 11. The sliding plate 771 and the bottom of the splined cylinder 10 cavity are fixedly connected together with a push spring 772. Several push blocks 773 that correspond to the mounting groove 72 and are slidably disposed in the mounting groove 72 are fixedly connected at equal intervals on the outer circumference of the sliding plate 771. The push blocks 773 are in contact with the upper end of the connecting rod 76.

[0038] The initial position of the cross-mount 4 is at the three o'clock position of the column shaft 3, and at this time, the electric telescopic rod 2 is extended to its maximum length. The disc stamping workpiece is placed on the lower stepped plate 12. Then, the cross-mount 4 is rotated manually or by an external pushing device to the nine o'clock position of the column shaft 3. Then, the electric telescopic rod 2 is retracted, causing the cross-mount 4 to gradually move downward. The cross-mount 4 then causes the shaft cylinder 13 to move downward, and the shaft cylinder 13 causes the shaft head 11 to move downward, so that the shaft head 11 gradually inserts into the splined cylinder 10. At this time, the end of the shaft head 11 touches the upper surface of the slide plate 771. The slide plate 771 is pushed downward by the shaft head 11 and then moves downward. Push block 773 moves down, and then pushes the upper end of connecting rod 76, which in turn pushes the sliding column 75 to slide down in the strip groove 74. As the upper end of connecting rod 76 moves down, its lower end moves away from spline cylinder 10, which in turn pushes the spring telescopic plate 71 to extend. The spring telescopic plate 71 then drives the I-shaped grinding wheel 73 to move away from spline cylinder 10. When the several I-shaped grinding wheels 73 distributed around the circumference move outward synchronously and come into contact with the edge of the central circular hole of the disc stamping workpiece, the disc stamping workpiece can be self-centered and adjusted so that the disc stamping workpiece and spline cylinder 10 are on the same axis.

[0039] As the shaft cylinder 13 moves downward, it also drives the upper stepped plate 14 to move downward synchronously through the gantry frame. When the grinding wheel 73 moves outward and touches the edge of the central circular hole of the disc stamping workpiece, the upper stepped plate 14 also moves downward to touch the upper surface of the disc stamping workpiece. At this time, the upper stepped plate 14 also drives the limiting post 17 to insert into the limiting hole 16. The upper stepped plate 14 and the lower stepped plate 12 are combined to clamp the disc stamping workpiece. At the same time, the position of the disc stamping workpiece can be further centered and corrected. Furthermore, the disc stamping workpiece can be contained and positioned to achieve circumferential stability constraint. Through the concentric circle adjustment operation formed by the double positioning points, the processing position of the disc stamping workpiece is ensured to be accurate and without shaking, thus improving the overall concentricity.

[0040] As the horizontal support frame 4 moves downward, it will drive the support beam 18 to move synchronously. When the positioning adjustment and clamping limit of the disc stamping workpiece are completed, the horizontal support frame 4 also moves down to the lowest position. At this time, the support beam 18 moves down and touches the upper part of the support plate 19, thereby supporting the left side of the horizontal support frame 4 after it moves down, and improving the overall stability of the horizontal support frame 4.

[0041] Please see Figure 2 and Figure 3 In this embodiment, the double-sided grinding mechanism 8 includes a disc grinding assembly 81 disposed outside the shaft cylinder 13. The disc grinding assembly 81 includes two mounting strips 811 symmetrically fixedly connected to the outside of the shaft cylinder 13. An L-shaped plate 812 is fixedly connected to the lower end face of each of the two mounting strips 811. 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 face of the two strip frames 813. The same disc grinding assembly 81 is also disposed outside the spline cylinder 10. The two disc grinding assemblies 81 are symmetrically distributed vertically. Several arc-shaped guide grooves 15 are circumferentially and equidistantly opened on opposite sides of the two annular grinding discs 815 for timely discharge of grinding debris during the grinding process.

[0042] Please see Figure 4 The drive unit 6 includes a drive motor 61 fixedly connected to the upper end face of the cross frame 4 via a fixing rod. The output shaft of the drive motor 61 passes through the cross frame 4 and is fixedly connected to a gear 62. A gear ring 63 that meshes with the gear 62 is fixedly connected to the outside of the shaft sleeve 13.

[0043] While the upper stepped plate 14 and the lower stepped plate 12 clamp the disc-shaped stamping workpiece, the upper and lower annular grinding plates 815 respectively abut against the bottom cavity surface and the bottom surface of the disc-shaped stamping workpiece, controlling the drive motor 61 to run and drive the gear 62 to rotate. The gear 62 then drives the shaft cylinder 13 to rotate through the gear ring 63. The shaft cylinder 13 then drives the splined cylinder 10, which is splinedly connected to the shaft head 11, to rotate through the shaft head 11. The shaft cylinder 13 and the splined cylinder 10 rotate together, and at the same time, they are respectively driven by the mounting strip 811 and the L-shaped plate 8. The 12 and the strip frame 813 drive the respective installed annular grinding discs 815 to rotate. The two annular grinding discs 815 can grind and polish the bottom cavity surface and the bottom surface of the disc stamping workpiece respectively. During the grinding process, the limit spring 814 pushes the strip frame 813 to always apply pressure to the annular grinding discs 815, ensuring that the annular grinding discs 815 are always in contact with the surface of the disc stamping workpiece. Then, the arc-shaped guide groove 15 is used to automatically and timely discharge the metal shavings generated during the grinding process, which improves the grinding effect.

[0044] The rotation of the splined cylinder 10 also drives the spring telescopic plate 71 to rotate, and the spring telescopic plate 71 then drives the I-shaped grinding wheel 73 to rotate synchronously. During the revolution, the I-shaped grinding wheel 73 will also rotate along the path of the circular hole edge in the middle of the disc stamping workpiece, so that the circular hole in the middle of the disc stamping workpiece can be targeted for grinding and polishing after the centering and adjustment of the disc stamping workpiece is completed.

[0045] Please see Figure 4 , Figure 5 , Figure 8 and Figure 9 In this embodiment, the transfer mechanism 9 includes two symmetrical strip-shaped boxes 91 that are symmetrically and fixedly connected through the shaft cylinder 13. Each strip-shaped box 91 has a slidably connected strip plate 92. A top spring is fixedly connected between the strip plate 92 and the strip box 91 via a fixing block. An arc-shaped plate 93 is fixedly connected to the side of the strip plate 92 away from the shaft cylinder 13. A slot 94 is formed on the outer wall of the arc-shaped plate 93 along its own arc direction. A lever 95 is fixedly connected to the upper end face of the strip plate 92 and located within the inner cavity of the shaft cylinder 13. Several slip rings 96 are fixedly connected at equal intervals by connecting rods. A slide rod 97 is slidably connected to each slip ring 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 to the lower end of the slide rod 97 to cooperate with the lever plate 95 so as to drive the arc plate 93 to move closer to the shaft cylinder 13. A trigger component 99 for driving the slide rod 97 to move longitudinally is provided between the cross frame 4 and the column shaft 3. The lower part of the arc plate 93 is wedge-shaped with a narrow bottom and a wide top.

[0046] Please see Figure 7 and Figure 8The trigger component 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 communicating with 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 tapered 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. An arc-shaped protrusion 995 for pressing the end of the push rod 996 close to the column shaft 3 is fixedly connected to the outside of the column shaft 3.

[0047] As the shaft cylinder 13 moves downward, it also drives the arc plate 93 to move synchronously through the strip box 91 and the strip plate 92. The wedge-shaped slope of the lower part of the arc plate 93 allows it to smoothly enter the round 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 gets stuck. When the arc plate 93 moves down to the lowest position with the shaft cylinder 13, it will drive the slot 94 to lock onto the outside of the edge of the round hole in the middle of the disc stamping workpiece.

[0048] After the disc stamping workpiece is ground and polished, the electric telescopic rod 2 is extended to push the crossbeam 4 upward. The crossbeam 4 then drives the shaft cylinder 13 upward. The upward movement of the shaft cylinder 13, through the strip box 91 and the strip plate 92, drives the arc plate 93 upward. The arc plate 93 then drives the slot 94 upward, causing the slot 94 to move upward relative to the disc stamping workpiece by a certain stroke. During this process, the shaft cylinder 13 also drives the upper stepped plate 14 and the shaft head 11 to move upward synchronously, causing the upper stepped plate 14 to move away from the disc stamping workpiece. The shaft head 11 is gradually moved out of the splined cylinder 10. The upward movement of the shaft head 11 causes the centering adjustment mechanism 7 to reverse and reset. Finally, the I-shaped 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 abuts against the bottom surface of the disc stamping workpiece. 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 stepped plate 12. At this time, the cross support 4 also moves up to the highest position.

[0049] Then, the horizontal support frame 4 is manually or externally driven to rotate around the column shaft 3. The horizontal support frame 4 then drives the push rod 996 to rotate around the column shaft 3. When the push rod 996 rotates to the point where its end near the column shaft 3 abuts against the arc-shaped protrusion 995, the arc-shaped protrusion 995 will squeeze the push rod 996, causing the push rod 996 to move away from the column shaft 3. The end of the push rod 996 away from the column shaft 3 then abuts against 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 rod 97 to move downward. The slide rod 97 then drives the conical ring 98 to move downward. During the downward movement of the conical ring 98, its inner conical surface will abut against the upper end of the lever 95 and squeeze the lever 95, causing the two levers 95 to move closer to each other.

[0050] The lever 95 then drives the arc plate 93 towards the shaft cylinder 13 via the strip plate 92. The arc plate 93 then drives the slot 94 to separate from the disc stamping workpiece, allowing the disc stamping workpiece to detach. This enables the automatic removal and placement of the processed disc stamping workpiece. At this time, the cross support 4 moves to the three-point position of the column shaft 3, that is, the cross support 4 returns to its initial position. Then, the above steps of placing the disc stamping workpiece into the lower stepped plate 12 and subsequent operations can be repeated to perform grinding and polishing on the next disc stamping workpiece.

[0051] See Figures 1-10During operation, the disc-shaped stamping workpiece is first placed into the lower stepped plate 12. Then, the horizontal support frame 4 is pushed to rotate around the column shaft 3, moving from its initial position at the three o'clock position to the nine o'clock position. The horizontal support frame 4 then moves the shaft cylinder 13 to directly above the splined cylinder 10. Next, the load-bearing electric telescopic rod 2 is controlled to move downwards, which in turn moves the horizontal support frame 4 downwards. The horizontal support frame 4 then moves the shaft cylinder 13 downwards, causing the shaft head 11 to insert into the splined cylinder 10 and triggering the centering adjustment mechanism 7. The centering adjustment mechanism 7 performs self-centering correction adjustment on the disc-shaped stamping workpiece. Simultaneously, the shaft cylinder 13 also moves the upper stepped plate 14 downwards to cooperate with the lower stepped plate 12, clamping the disc-shaped stamping workpiece. The combination of the upper stepped plate 14 and the lower stepped plate 12 further clamps the disc-shaped stamping workpiece. After centering and adjustment, the drive unit 6 is controlled to rotate the shaft cylinder 13. The shaft cylinder 13 then drives the double-sided grinding mechanism 8 to operate, simultaneously grinding and polishing the bottom cavity surface and the bottom surface of the disc stamping workpiece. Finally, after the disc stamping workpiece is ground and polished, the load-bearing electric telescopic rod 2 is controlled to move the horizontal carrier 4 upward. During the upward movement of the horizontal carrier 4, the transfer mechanism 9 removes the disc stamping workpiece from the lower stepped plate 12 until the horizontal carrier 4 moves to the initial height. Then, the horizontal carrier 4 is pushed to rotate around the column shaft 3. During this process, the transfer mechanism 9 will be activated. When the horizontal carrier 4 rotates back to the three-point position of the column shaft 3, the transfer mechanism 9 can automatically put down the removed disc stamping workpiece. Then, the next disc stamping workpiece can be placed into the lower stepped plate 12, and the above steps are repeated.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic polishing equipment for automobile stamping parts, comprising a processing seat (1), a 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 bearing electric telescopic rod (2), characterized in that: The outer rotating connection of the column shaft (3) is provided with a transverse carrier (4), the transverse carrier (4) is provided with a vertical installation through hole (5), the installation through hole (5) is rotatably connected with a shaft cylinder (13), the transverse carrier (4) is provided with a driving unit (6) for driving the shaft cylinder (13) to rotate, the upper end surface of the machining seat (1) is rotatably connected with a spline cylinder (10), the lower end of the shaft cylinder (13) is fixedly connected with a shaft head (11) which is spline matched with the spline cylinder (10), the spline cylinder (10) is provided with a centering adjusting mechanism (7) for matching with the shaft head (11) so as to self-centering adjustment and positioning of the disc stamping workpiece; The spline cylinder (10) and the shaft cylinder (13) are jointly provided with a double-sided polishing mechanism (8) for synchronous polishing of the bottom cavity surface and the lower bottom surface of the disc stamping workpiece; The upper end surface of the machining seat (1) is fixedly connected with a lower stepped disc (12) which is collinear with the axis of the spline cylinder (10) and is used for placing the disc stamping workpiece, the outer portion of the shaft cylinder (13) is rotatably connected with an upper stepped disc (14) through a door type frame, which is used for matching with the lower stepped disc (12) so as to secondary self-centering adjustment of the disc stamping workpiece and clamping and limiting the disc stamping workpiece; The shaft cylinder (13), the transverse carrier (4) and the column shaft (3) are jointly provided with a moving and placing mechanism (9) for clamping the processed disc stamping workpiece so as to quickly take it off; The centering adjusting mechanism (7) comprises a plurality of spring expansion plates (71) which are fixedly connected on the outer wall of the spline cylinder (10) at equal intervals in the circumferential direction, and a plurality of installation grooves (72) which are opened on the spline cylinder (10) at equal intervals in the circumferential direction and correspond to the spring expansion plates (71), the spring expansion plate (71) is rotatably connected with a work type grinding wheel (73) through a rotating column, the opposite groove walls of the installation groove (72) are provided with a strip-shaped groove (74), and the corresponding two strip-shaped grooves (74) are jointly and slidably connected with a sliding column (75), the outer portion of the sliding column (75) is hingedly connected with a connecting rod (76), one 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), and the spline cylinder (10) is provided with a synchronous pressure moving assembly (77) for pressing the sliding column (75) to move downward synchronously; The double-sided polishing mechanism (8) comprises a disc type polishing assembly (81) arranged on the outer portion of the shaft cylinder (13), the disc type polishing assembly (81) comprises two installation strip plates (811) which are fixedly connected on the outer portion of the shaft cylinder (13) in a symmetrical manner, the lower end surface of each of the two installation strip plates (811) is fixedly connected with an L-shaped plate (812), the L-shaped plate (812) is slidably sleeved with a strip-shaped frame (813) on the horizontal section, the strip-shaped frame (813) and the L-shaped plate (812) are jointly and fixedly connected with a limiting spring (814) therebetween, the lower end surface of the two strip-shaped frames (813) is jointly and fixedly connected with an annular polishing disc (815), the outer portion of the spline cylinder (10) is also provided with the same disc type polishing assembly (81), and the two disc type polishing assemblies (81) are symmetrically distributed in an up-down manner.

2. The automatic polishing apparatus for a stamped part of an automobile according to claim 1, characterized by: The moving mechanism (9) comprises two symmetrical strip boxes (91) fixedly connected in the shaft cylinder (13), strip plates (92) slidably connected in the strip boxes (91), a top spring fixedly connected between the strip plate (92) and the strip box (91), an arc plate (93) fixedly connected to the side of the strip plate (92) away from the shaft cylinder (13), a clamping groove (94) formed in the outer wall of the arc plate (93) along the arc direction of the arc plate (93), a push plate (95) fixedly connected to the upper end surface of the strip plate (92) and located in the inner cavity of the shaft cylinder (13), a plurality of sliding rings (96) fixedly connected in the inner cavity of the shaft cylinder (13) through connecting rods, a sliding rod (97) slidably connected in the sliding rings (96), a return spring fixedly connected between one of the sliding rings (96) and the sliding rod (97), a conical ring (98) fixedly connected to the lower end of the sliding rod (97) and used for cooperating with the push plate (95) to drive the arc plate (93) to move close to the shaft cylinder (13), and a touch assembly (99) arranged between the transverse carrier (4) and the column shaft (3) and used for driving the sliding rod (97) to move longitudinally.

3. The automatic polishing apparatus for the automobile stamping part according to claim 1, characterized in that: The driving unit (6) comprises a driving motor (61) fixedly connected to the upper end surface of the transverse carrier (4) through a fixing rod, wherein the output shaft of the driving motor (61) penetrates through the transverse carrier (4) and is fixedly connected with a gear (62), and the shaft cylinder (13) is fixedly connected with a gear ring (63) engaged with the gear (62) on the outside.

4. The automatic polishing apparatus for the automobile stamping part according to claim 1, characterized in that: The synchronous pressure moving assembly (77) comprises a sliding disc (771) slidably connected in the spline cylinder (10) and used for being pressed by the shaft head (11), wherein the sliding disc (771) is fixedly connected with a push spring (772) at the bottom of the cavity of the spline cylinder (10), a plurality of push blocks (773) are fixedly connected to the circumferential outer wall of the sliding disc (771) at equal intervals and slidably arranged in the mounting grooves (72), and the push blocks (773) are in contact with the upper end of the connecting rod (76).

5. The automatic polishing apparatus for the automobile stamping part according to claim 1, characterized in that: A plurality of arc-shaped discharge grooves (15) are circumferentially and equidistantly formed on the opposite sides of the two annular polishing discs (815) and used for discharging the polishing dust in time.

6. The automatic polishing apparatus for a stamped part of an automobile according to claim 1, characterized by: A plurality of limiting holes (16) are circumferentially and equidistantly formed on the upper end surface of the lower stepped disc (12), and a plurality of limiting columns (17) are fixedly connected to the lower end surface of the upper stepped disc (14) at equal intervals and correspondingly and cooperatively arranged in the limiting holes (16).

7. The automatic polishing apparatus for the automobile stamping parts according to claim 2, characterized in that: The touch assembly (99) comprises an annular groove (991) formed in the transverse carrier (4) and located outside the column shaft (3), and a transverse groove (992) formed in the transverse carrier (4) and communicating with the mounting through hole (5) and the annular groove (991), a jacking rod (996) being slidingly connected in the transverse groove (992), a reset spring (993) being fixedly connected between the jacking rod (996) and the transverse groove (992), a conical boss (994) being fixedly connected to the upper end of the jacking rod (996) and cooperating with the end of the jacking rod (996) away from the column shaft (3), and an arc-shaped protrusion (995) being fixedly connected outside the column shaft (3) and used for pressing the end of the jacking rod (996) close to the column shaft (3).

8. The automatic polishing apparatus for the automobile stamping part 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 machining seat (1) is fixedly connected with a supporting plate (19) cooperating with the supporting beam (18).

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