Polishing device for preventing excessive polishing of exterior of workpiece

By designing a grinding device including a base, a positioning plate, a gantry, a lifting plate and a grinding depth positioning mechanism, the problem of difficult grinding depth in the prior art is solved, and precise grinding of metal workpieces is achieved, ensuring processing quality and safety of workpieces.

CN223012748UActive Publication Date: 2025-06-24HEBEI ZONGHENG GRP FENGNAN STEEL CO LTD
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Patent Information

Application Number
CN202421931397.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-12
Publication Date
2025-06-24
Estimated Expiration
2034-08-12

AI Technical Summary

Technical Problem

The existing metal workpiece grinding devices lack positioning control of the grinding depth, resulting in excessive grinding of the workpiece outside, causing irreparable damage and affecting the processing quality.

Method used

A device is designed to prevent excessive grinding of the outside of the grinding workpiece, including a base, a positioning plate, a gantry, a lifting plate and a grinding depth positioning mechanism. Accurate control of grinding depth is achieved through components such as cylinders, arc-shaped clamps, rotating motors and pressure sensors.

Benefits of technology

It effectively avoids the problem of excessive grinding depth, ensures the processing quality of the workpiece, avoids irreparable damage caused by excessive grinding, and ensures effective fixation of the workpiece and avoids deviation during grinding.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223012748U_ABST
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Abstract

The utility model belongs to the technical field of polishing devices, and particularly relates to a polishing device for preventing excessive polishing of the outside of a workpiece, which comprises a base and two positioning discs, a fixing mechanism for clamping and fixing the workpiece is arranged at the top of the base, a portal frame is fixedly connected to the top of the base, a lifting plate is arranged in the portal frame, and the two positioning discs are arranged on the lifting plate. A grinding mechanism is arranged between the portal frame and the lifting plate, and grinding depth positioning mechanisms are arranged among the lifting plate, the portal frame, the base and the two positioning discs. The grinding device is reasonable in structural design, the downward moving distance of the grinding disc can be accurately positioned, the situation that the grinding depth is too large due to the fact that the downward moving distance of the grinding disc is too large during grinding is avoided, then the grinding depth of a workpiece can be accurately controlled, the situation that the machining quality of the workpiece is seriously affected due to excessive grinding is avoided, and the machining efficiency is improved. And meanwhile, the workpieces can be effectively fixed, and the situation that the grinding quality is affected due to deviation of the workpieces during grinding is avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, in particular to a grinding device for preventing excessive grinding on the outside of a workpiece to be ground. Background Technique

[0002] Grinding and polishing refer to the processing method of using mechanical, chemical or electrochemical action to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is the finishing process of using a grinding tool and abrasive particles or other grinding media to process the surface of the workpiece. During the production process of metal workpieces, a grinding device is required to perform grinding and polishing operations on the outer surface of the workpiece.

[0003] However, there are still deficiencies in the metal workpiece grinding devices in the related art. There is a lack of a mechanism for positioning the grinding depth of the workpiece, resulting in excessive grinding depth on the outside of the workpiece and causing irreparable damage, seriously affecting the processing quality of the workpiece. Therefore, we propose a grinding device for preventing excessive grinding on the outside of the workpiece to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages and propose a grinding device for preventing excessive grinding on the outside of the workpiece to be ground.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A grinding device for preventing excessive grinding on the outside of a workpiece to be ground includes a base and two positioning discs. A fixing mechanism for clamping and fixing the workpiece is arranged on the top of the base. A gantry is fixedly connected to the top of the base. A lifting plate is arranged inside the gantry. A grinding mechanism is arranged between the gantry and the lifting plate. A grinding depth positioning mechanism is arranged among the lifting plate, the gantry, the base and the two positioning discs.

[0007] Specifically, the fixing mechanism includes a placement groove fixedly connected to the top of the base. Lower cylinders are fixedly connected to both sides of the placement groove. An arc-shaped clamping plate is fixedly connected to the output shaft of the lower cylinder.

[0008] Specifically, both arc-shaped clamping plates are movably sleeved in the placement groove and slidably connected to the top of the base.

[0009] Specifically, the grinding mechanism includes an upper cylinder fixedly connected to the top of the gantry. The lifting plate is fixedly connected to the output shaft of the upper cylinder. A rotary motor is fixedly connected to the bottom of the lifting plate. A rotary shaft is fixedly connected to the output shaft of the rotary motor. A grinding disc is fixedly connected to the bottom end of the rotary shaft.

[0010] Specifically, the grinding depth positioning mechanism includes two scale rods fixedly connected between the base and the gantry. Two positioning disks are respectively slidably sleeved outside the corresponding scale rods. A pressure sensor is fixedly connected to the top of the positioning disk. A cavity is formed in the positioning disk. An adjusting and fixing assembly is arranged between the positioning disk, the cavity and the scale rod.

[0011] Specifically, the adjusting and fixing assembly includes a nut sleeve fixedly connected to one side of the positioning disk. A threaded rod is threadedly sleeved in the nut sleeve. One end of the threaded rod is rotatably connected to an arc-shaped brake pad. The arc-shaped brake pad is movably abutted against the outside of the scale rod. Two limiting grooves are formed in one inner wall of the cavity. A limiting rod is slidably sleeved in the limiting groove. Both limiting rods are fixedly connected to the outside of the arc-shaped brake pad.

[0012] Specifically, handwheels are fixedly connected to the mutually remote sides of the two threaded rods.

[0013] Specifically, a controller is fixedly connected to one side of the gantry. The controller is electrically connected to the pressure sensor.

[0014] In the present utility model, for the grinding device for preventing excessive grinding on the outside of the workpiece to be ground, the output shafts of the two lower air cylinders drive the two arc-shaped clamping plates to approach each other, thereby clamping and fixing the workpiece, avoiding deviation during grinding and affecting the grinding quality. According to the requirement of the grinding depth, by rotating the handwheel to rotate the threaded rod, under the action of the nut sleeve, the two threaded rods drive the two arc-shaped brake pads to move away from each other and do not fix the positioning disk. At this time, the heights of the two positioning disks can be adjusted up and down. Through the scales on the scale rods, the distance between the lifting plate and the positioning disk can be clearly known, thereby accurately positioning the distance of the downward movement of the lifting plate and avoiding excessive downward movement of the lifting plate during grinding, resulting in too deep grinding depth.

[0015] In the present utility model, for the grinding device for preventing excessive grinding on the outside of the workpiece to be ground, after adjustment, reverse-rotate the threaded rod to make the two arc-shaped brake pads approach each other and firmly abut against the outside of the scale rod, thereby fixing the positioning disk. The rotation of the grinding disk is driven by the rotating motor. The lifting plate and the grinding disk are driven to move downward by the upper air cylinder. By rotating and moving downward of the grinding disk, the workpiece can be ground. When the lifting plate abuts against the positioning disk, at this time, the pressure sensor is pressed and sends a signal to the controller, and the controller closes the upper air cylinder to stop its continuous downward movement, avoiding too deep grinding and seriously affecting the machining quality of the workpiece. At this time, the grinding disk can continue to grind the top of the workpiece at this height.

[0016] The structure design of the utility model is reasonable, which can accurately position the downward movement distance of the grinding disc, avoid the excessive downward movement distance of the grinding disc during grinding, resulting in too deep grinding depth, and then can accurately control the grinding depth of the workpiece, avoid excessive grinding and seriously affecting the machining quality of the workpiece. At the same time, the workpiece can be effectively fixed to avoid the deviation of the workpiece during grinding and affecting the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a grinding device for preventing excessive external grinding of a workpiece proposed by the utility model;

[0018] Figure 2 FIG. is a sectional view of a grinding device for preventing excessive external grinding of a workpiece proposed by the utility model;

[0019] Figure 3 FIG. is a perspective view of a grinding depth positioning mechanism of a grinding device for preventing excessive external grinding of a workpiece proposed by the utility model;

[0020] Figure 4 is Figure 2 a schematic structural diagram of part A in

[0021] In the figure: 1, base; 2, gantry; 3, placement groove; 4, lower cylinder; 5, arc-shaped clamping plate; 6, upper cylinder; 7, lifting plate; 8, rotating motor; 9, rotating shaft; 10, grinding disc; 11, scale rod; 12, positioning disc; 13, pressure sensor; 14, hand wheel; 15, controller; 16, threaded rod; 17, nut sleeve; 18, limiting groove; 19, limiting rod; 20, cavity; 21, arc-shaped brake pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Referring to Figures 1-4 , a grinding device for preventing excessive external grinding of a workpiece includes a base 1 and two positioning discs 12. A fixing mechanism for clamping and fixing the workpiece is provided at the top of the base 1. A gantry 2 is fixedly connected to the top of the base 1. A lifting plate 7 is arranged inside the gantry 2. A grinding mechanism is arranged between the gantry 2 and the lifting plate 7. A grinding depth positioning mechanism is arranged among the lifting plate 7, the gantry 2, the base 1 and the two positioning discs 12.

[0024] In the present utility model, the fixing mechanism includes a placement groove 3 fixedly connected to the top of the base 1. Both sides of the placement groove 3 are fixedly connected with lower air cylinders 4. An arc-shaped clamping plate 5 is fixedly connected to the output shaft of the lower air cylinder 4. Both arc-shaped clamping plates 5 are movably sleeved in the placement groove 3 and slidably connected to the top of the base 1. Place the workpiece in the placement groove 3, start the two lower air cylinders 4, and the output shafts of the two lower air cylinders 4 drive the two arc-shaped clamping plates 5 to approach each other, thereby clamping and fixing the workpiece to prevent deviation during grinding and affecting the grinding quality.

[0025] In the present utility model, the grinding mechanism includes an upper air cylinder 6 fixedly connected to the top of the gantry 2. A lifting plate 7 is fixedly connected to the output shaft of the upper air cylinder 6. A rotary motor 8 is fixedly connected to the bottom of the lifting plate 7. A rotary shaft 9 is fixedly connected to the output shaft of the rotary motor 8. A grinding disc 10 is fixedly connected to the bottom end of the rotary shaft 9. The rotation of the grinding disc 10 is driven by the rotary motor 8, and the lifting plate 7 and the grinding disc 10 are driven to move downward by the upper air cylinder 6. By rotating and moving downward of the grinding disc 10, the grinding operation of the workpiece can be carried out. When the lifting plate 7 abuts against the positioning disc 12, at this time, the pressure sensor 13 is pressed and sends a signal to the controller 15, and the controller 15 closes the upper air cylinder 6 to stop its continuous downward movement to prevent over-grinding and seriously affecting the machining quality of the workpiece. At this time, the grinding disc 10 can continue to grind the top of the workpiece at this height.

[0026] In the present utility model, the grinding depth positioning mechanism includes two scale rods 11 fixedly connected between the base 1 and the gantry 2. Two positioning disks 12 are respectively slidably sleeved outside the corresponding scale rods 11. A pressure sensor 13 is fixedly connected to the top of the positioning disk 12. A cavity 20 is formed inside the positioning disk 12. An adjusting and fixing assembly is provided between the positioning disk 12, the cavity 20 and the scale rod 11. The adjusting and fixing assembly includes a nut sleeve 17 fixedly connected to one side of the positioning disk 12. A threaded rod 16 is threadedly sleeved inside the nut sleeve 17. One end of the threaded rod 16 is rotatably connected to an arc-shaped brake pad 21. The arc-shaped brake pad 21 is movably abutted against the outside of the scale rod 11. Two limiting grooves 18 are formed on one inner wall of the cavity 20. A limiting rod 19 is slidably sleeved inside the limiting groove 18. Both limiting rods 19 are fixedly connected to the outside of the arc-shaped brake pad 21. According to the requirement of the grinding depth, rotate the threaded rod 16. Under the action of the nut sleeve 17, the two threaded rods 16 drive the two arc-shaped brake pads 21 to move away from each other without fixing the positioning disk 12. At this time, the heights of the two positioning disks 12 can be adjusted up and down. Through the scale on the scale rod 11, the distance between the lifting plate 7 and the positioning disk 12 can be clearly known, so as to accurately position the distance of the downward movement of the lifting plate 7 and the grinding disk 10, and avoid the grinding depth being too deep due to the excessive downward movement distance of the grinding disk 10 during grinding. When the adjustment is completed, rotate the threaded rod 16 in the reverse direction so that the two arc-shaped brake pads 21 approach each other and firmly abut against the outside of the scale rod 11, thereby fixing the positioning disk 12.

[0027] In the present utility model, a hand wheel 14 is fixedly connected to one side of each of the two threaded rods 16, which is conducive to rotating the threaded rod 16.

[0028] In the present utility model, a controller 15 is fixedly connected to one side of the gantry 2. The controller 15 is electrically connected to the pressure sensor 13, which is convenient for unified control of the equipment.

[0029] In the present utility model, during use, the workpiece is placed in the placement groove 3, and two lower air cylinders 4 are started. The output shafts of the two lower air cylinders 4 drive the two arc-shaped clamping plates 5 to approach each other, thereby clamping and fixing the workpiece to prevent deviation during grinding and affecting the grinding quality. Then, according to the requirement of the grinding depth, the handwheel 14 is rotated to rotate the threaded rod 16. Under the action of the nut sleeve 17 and the guiding and limiting of the limiting rod 19, the two threaded rods 16 drive the two arc-shaped brake pads 21 to move away from each other and do not fix the positioning plate 12. At this time, the heights of the two positioning plates 12 can be adjusted up and down. Through the scale on the scale rod 11, the distance between the lifting plate 7 and the positioning plate 12 can be clearly known, thereby accurately positioning the distance of the downward movement of the lifting plate 7 to prevent the downward movement distance of the lifting plate 7 from being too large during grinding and resulting in too deep grinding depth. After adjustment, the handwheel 14 and the threaded rod 16 are rotated in the reverse direction, so that the two arc-shaped brake pads 21 approach each other and firmly abut against the outside of the scale rod 11, thereby fixing the positioning plate 12. Then, the rotation motor 8 drives the rotation of the grinding disc 10, and the upper air cylinder 6 drives the downward movement of the lifting plate 7 and the grinding disc 10. By the grinding disc 10 rotating and moving downward at the same time, the workpiece can be ground. When the lifting plate 7 abuts against the positioning plate 12, the pressure sensor 13 is pressed and sends a signal to the controller 15. The controller 15 closes the upper air cylinder 6 to stop its continuous downward movement to prevent over-grinding and seriously affecting the machining quality of the workpiece. At this time, the grinding disc 10 can continue to grind the top of the workpiece at this height.

Claims

1. A grinding device for preventing excessive grinding of the outer part of a workpiece, characterized in that: The invention comprises a base (1) and two positioning plates (12); a fixing mechanism for clamping and fixing a workpiece is arranged on the top of the base (1); a gantry (2) is fixedly connected to the top of the base (1); a lifting plate (7) is arranged inside the gantry (2); a grinding mechanism is arranged between the gantry (2) and the lifting plate (7); and a grinding depth positioning mechanism is arranged between the lifting plate (7), the gantry (2), the base (1) and the two positioning plates (12).

2. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 1, characterized in that: The fixing mechanism comprises a placement groove (3) fixedly connected to the top of the base (1), both sides of the placement groove (3) are fixedly connected to lower cylinders (4), and an arc-shaped clamping plate (5) is fixedly connected to the output shaft of the lower cylinder (4).

3. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 2, characterized in that: The two arc-shaped clamping plates (5) are both movably sleeved in the placement groove (3) and slidably connected to the top of the base (1).

4. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 1, characterized in that: The grinding mechanism comprises an upper cylinder (6) fixedly connected to the top of the gantry (2); the lifting plate (7) is fixedly connected to the output shaft of the upper cylinder (6); the bottom of the lifting plate (7) is fixedly connected to a rotating motor (8); the output shaft of the rotating motor (8) is fixedly connected to a rotating shaft (9); and the bottom end of the rotating shaft (9) is fixedly connected to a grinding disc (10).

5. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 1, characterized in that: The grinding depth positioning mechanism comprises two scale rods (11) fixedly connected between a base (1) and a gantry (2); two positioning plates (12) are respectively slidably mounted on the outer sides of the corresponding scale rods (11); a pressure sensor (13) is fixedly connected to the top of the positioning plate (12); a cavity (20) is provided in the positioning plate (12); and an adjustment and fixing assembly is provided between the positioning plate (12), the cavity (20) and the scale rod (11).

6. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 5, characterized in that: The adjusting and fixing assembly comprises a nut sleeve (17) fixedly connected to one side of the positioning plate (12); a threaded rod (16) is provided in the inner thread sleeve of the nut sleeve (17); one end of the threaded rod (16) is rotatably connected to an arc-shaped brake pad (21); the arc-shaped brake pad (21) is movably abutted against the outer side of the scale rod (11); two limiting grooves (18) are provided on the inner wall of one side of the cavity (20); a limiting rod (19) is slidably sleeved in the limiting groove (18); and the two limiting rods (19) are fixedly connected to the outer side of the arc-shaped brake pad (21).

7. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 6, characterized in that: The two threaded rods (16) are fixedly connected to a hand wheel (14) on one side away from each other.

8. The grinding device for preventing excessive grinding of the outer part of a workpiece according to claim 5, characterized in that: A controller (15) is fixedly connected to one side of the gantry (2), and the controller (15) is electrically connected to the pressure sensor (13).