Grinding device for upper ball head of rearview mirror bracket

Abstract

The utility model belongs to the technical field of polishing devices, and discloses a rearview mirror support upper ball head polishing device which comprises a rack, a working table top is fixedly installed at the upper end of the rack, an abrasive belt support is fixedly installed on one side of the rack, a sliding groove is formed in one side of the upper surface of the working table top, and a sliding rail is fixedly installed in the sliding groove. A rotating shaft is rotationally connected into the sliding block, a rotary fixing base is fixedly installed at the upper end of the rotating shaft, a rotary cam is fixedly installed at the lower end of the rotating shaft, and the rotary cam makes contact with the outer wall of the fixing wheel. And the spherical surface of the ball head rotates on the tool clamp along the rotating shaft passing through the ball center and moves through the cam mechanism, so that the position is accurate and the grinding is uniform when the parting surface of a mold at the ball head position of a part is ground, the grinding time is shortened, and the working efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding devices, in particular to a ball head grinding device on a rearview mirror bracket. Background Art

[0002] The car rearview mirror bracket is a component used to fix the rearview mirror. It ensures that the rearview mirror can be stably installed on the car so that the driver can clearly see the situation behind.

[0003] At present, the flash of the mold parting surface of the ball head position on the die-cast automobile rearview mirror bracket is polished by manual pneumatic flat files. In the production process, since the flat file and the ball head are only fitted at one point, the manual operation has a large error in completely aligning the parting line. If the manual operation is too strong or the polishing time is too long, the ball part is prone to irreparable pit defects after polishing, which can easily cause the parts to be scrapped. Manual operation is inefficient and the quality is difficult to control. Utility Model Content

[0004] The purpose of the utility model is to provide a ball head grinding device for a rearview mirror bracket in order to solve the above problems.

[0005] The technical solution adopted by the utility model is as follows: a ball head grinding device on a rearview mirror bracket, comprising:

[0006] A frame, a work surface is fixedly installed on the upper end of the frame, a sanding belt bracket is fixedly installed on one side of the frame, a slide groove is opened on one side of the upper surface of the work surface, a slide rail is fixedly installed inside the slide groove, and a fixed wheel is fixedly installed on the lower wall of the work surface;

[0007] A slider is slidably connected to the outside of the slide rail, a rotating shaft is rotatably connected inside the slider, a rotating fixed seat is fixedly installed on the upper end of the rotating shaft, a rotating cam is fixedly installed on the lower end of the rotating shaft, and the rotating cam is in contact with the outer wall of the fixed wheel;

[0008] The motor is fixedly mounted at the lower end of the frame, and an abrasive belt is arranged between the output shaft of the motor and the abrasive belt bracket.

[0009] Through the above technical scheme, the abrasive belt is driven to move by a motor, and the workpiece is placed on the upper surface of the rotary positioning seat. The workpiece is positioned by the rotary positioning seat, and the workpiece is rotated to evenly grind the mold parting surface and the abrasive belt at the spherical part of the workpiece. The rotating workpiece drives the rotary positioning seat to rotate together, and the rotary positioning seat drives the rotary cam to rotate together when the rotary positioning seat rotates. When the rotary cam rotates, the outer circle of the cam contacts the fixed wheel. When the rotary cam rotates, displacement occurs due to the change in the outer diameter of the cam. Through the slider connected to the rotary positioning seat, the workpiece is moved along the slide groove during the grinding process, so that the workpiece and the abrasive belt are better fitted for grinding, and the workpiece is turned over 180°. The above steps are repeated to grind the flash of the mold parting surface at the spherical part of the other side of the workpiece.

[0010] In a preferred embodiment, a return spring is disposed on the outer wall of the slide rail, and the return spring is located between the slider and the inner wall of the slide groove.

[0011] Through the above technical solution, the return spring ensures that the rotary cam is in close contact with the fixed wheel during the movement of the slider.

[0012] In a preferred embodiment, two positioning pins are welded to the outer wall of the rotary cam.

[0013] Through the above technical solution, the position angle of the workpiece during grinding is controlled by two positioning pins welded on the rotary cam.

[0014] In a preferred embodiment, a spherical concave surface and a limiting recess are provided on the upper surface of the swivel fixing seat.

[0015] Through the above technical solution, the workpiece is positioned through the spherical concave surface and the limiting recess.

[0016] In a preferred embodiment, an anti-slip pad is fixedly installed on the bottom of the frame.

[0017] The above technical solution improves the stability of the equipment.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are as follows: the utility model provides a ball head grinding device for a rearview mirror bracket.

[0019] By using a fixture to locate the contact distance and position between the mold parting surface and the belt grinding surface at the ball head position of the part, the spherical surface of the ball head is rotated along the rotation axis passing through the center of the ball on the fixture and moved through the cam mechanism, so that the mold parting surface at the ball head position of the part can be accurately positioned and ground evenly during grinding, thereby reducing grinding time and improving work efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the utility model;

[0021] Figure 2 It is a side view of the utility model;

[0022] Figure 3 It is a top view of the working table in the utility model;

[0023] Figure 4 It is a bottom view of the work surface in the utility model.

[0024] Markings in the figure: 1-frame; 2-work table; 3-slide groove; 4-slide rail; 5-slider; 6-rotation positioning seat; 7-rotation cam; 8-fixed wheel; 9-locating pin; 10-reset spring; 11-abrasive belt bracket; 12-abrasive belt; 13-motor. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The following will be combined Figure 1-4 A ball head grinding device for a rearview mirror bracket according to an embodiment of the utility model is described in detail.

[0027] Example:

[0028] A ball head grinding device for a rearview mirror bracket, comprising:

[0029] A frame 1, a work surface 2 is fixedly installed on the upper end thereof, an anti-skid pad is fixedly installed on the bottom of the frame 1 to improve the stability of the equipment, a sanding belt bracket 11 is fixedly installed on one side of the frame 1, and a motor 13 is fixedly installed on the lower end of the frame 1, a sanding belt 12 is arranged between the output shaft of the motor 13 and the sanding belt bracket 11, and the sanding belt 12 is driven to move by the motor 13, a slide groove 3 is opened on one side of the upper surface of the work surface 2, a slide rail 4 is fixedly installed inside the slide groove 3, and a fixed wheel 8 is fixedly installed on the lower wall of the work surface 2;

[0030] The slider 5 is slidably connected to the outside of the slide rail 4, and a rotating shaft is rotatably connected inside the slider 5, and a rotary fixing seat 6 is fixedly installed on the upper end of the rotating shaft. A spherical concave surface and a limiting concave seat are provided on the upper surface of the rotary fixing seat 6. The workpiece is positioned by the spherical concave surface and the limiting concave seat. The workpiece is placed on the upper surface of the rotary positioning seat 6, and the workpiece is positioned by the rotary positioning seat 6. The workpiece is rotated to evenly grind the mold parting surface at the spherical part of the workpiece and the abrasive belt 12;

[0031] The lower end of the rotating shaft is fixedly installed with a rotary cam 7, and two locating pins 9 are welded on the outer wall of the rotary cam 7. The position angle of the workpiece during grinding is controlled by the two locating pins 9 welded on the rotary cam 7. The rotary cam 7 contacts the outer wall of the fixed wheel 8. The outer wall of the slide rail 4 is provided with a return spring 10, and the return spring 10 is located between the slider 5 and the inner wall of the slide groove 3. During the movement of the slider 5, the return spring 10 ensures that the rotary cam 7 is in close contact with the fixed wheel 8, and the rotating workpiece drives the rotary positioning seat 3 to rotate together. When the rotary positioning seat 6 rotates, the rotary cam 7 is driven to rotate together. When the rotary cam 7 rotates, the outer circle of the cam contacts the fixed wheel 8. When the rotary cam 7 rotates, displacement is generated due to the change in the outer diameter of the cam. Through the slider 5 connected to the rotary positioning seat 6, the workpiece is moved along the slide groove 3 during the grinding process, so that the workpiece and the abrasive belt 12 are better fitted and ground. The workpiece is turned over at an angle of 180°, and the above steps are repeated to grind the flash of the mold parting surface at the spherical part of the other side of the workpiece.

[0032] Working principle:

[0033] The abrasive belt 12 is driven by the motor 13 to move, and the workpiece is placed on the upper surface of the rotary positioning seat 6. The workpiece is positioned by the rotary positioning seat 6, and the workpiece is rotated to evenly grind the mold parting surface and the abrasive belt 12 at the spherical part of the workpiece. The rotating workpiece drives the rotary positioning seat 3 to rotate together. When the rotary positioning seat 6 rotates, it drives the rotary cam 7 to rotate together. When the rotary cam 7 rotates, the outer circle of the cam contacts the fixed wheel 8. When the rotary cam 7 rotates, the displacement is generated due to the change of the outer diameter of the cam. Through the slider 5 connected to the rotary positioning seat 6, the workpiece is moved along the slide groove 3 during the grinding process, so that the workpiece and the abrasive belt 12 are better fitted and ground. The workpiece is turned over at an angle of 180°, and the above steps are repeated to grind the flash of the mold parting surface at the spherical part of the other side of the workpiece.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball head grinding device for a rearview mirror bracket, characterized in that: include: A frame (1) is fixedly mounted with a work surface (2) at its upper end, a sanding belt support (11) is fixedly mounted on one side of the frame (1), a slide groove (3) is provided on one side of the upper surface of the work surface (2), a slide rail (4) is fixedly mounted inside the slide groove (3), and a fixed wheel (8) is fixedly mounted on the lower wall of the work surface (2); A slider (5) is slidably connected to the outside of the slide rail (4), the slider (5) is rotatably connected to a rotating shaft inside, and a rotating fixed seat (6) is fixedly installed on the upper end of the rotating shaft, and a rotating cam (7) is fixedly installed on the lower end of the rotating shaft, and the rotating cam (7) is in contact with the outer wall of the fixed wheel (8); The motor (13) is fixedly mounted on the lower end of the frame (1), and a sanding belt (12) is arranged between the output shaft of the motor (13) and the sanding belt bracket (11).

2. A ball head grinding device for a rearview mirror bracket as claimed in claim 1, characterized in that: The outer wall of the slide rail (4) is provided with a return spring (10), and the return spring (10) is located between the slider (5) and the inner wall of the slide groove (3).

3. A ball head grinding device for a rearview mirror bracket as claimed in claim 1, characterized in that: Two positioning pins (9) are welded to the outer wall of the rotary cam (7).

4. A ball head grinding device for a rearview mirror bracket as claimed in claim 1, characterized in that: The upper surface of the rotary fixing seat (6) is provided with a spherical concave surface and a limiting concave seat.

5. The ball head grinding device for a rearview mirror bracket according to claim 1, characterized in that: An anti-slip pad is fixedly installed on the bottom of the frame (1).

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