Outer edge grinding device for brake drum blank

Abstract

The utility model discloses an outer edge polishing device for a brake drum blank, and relates to the technical field of automobile part machining. The device comprises a rack, a three-jaw chuck pneumatic push rod is arranged on the inner side of the rack, a workpiece rotating motor is arranged below the three-jaw chuck pneumatic push rod, a placing plate is arranged on the upper side of the three-jaw chuck pneumatic push rod, and an upper pressing plate is arranged above the placing plate; a rack pneumatic push rod is fixed to the middle of the lower wall of the rack, an adjusting supporting bottom plate is fixed to the lower end of the rack pneumatic push rod, the front side and the rear side of the adjusting supporting bottom plate are in threaded connection with screws, and the outsides of the screws are rotationally connected with bottom plates through bearings. The brake drum blank can be conveniently positioned, the operation height can be conveniently adjusted through the rack pneumatic push rod, the supporting area is increased through the bottom plate, and the using stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, in particular to an outer edge grinding device for a brake drum blank. Background Art

[0002] In the prior art, the steps for processing the brake drum in the automobile brake system include grinding the outer edge of the brake drum blank, such as the authorization announcement number CN216883204U, the authorization announcement date 2022.03.16 discloses an automobile drum brake pad outer arc grinder, including a grinding machine device, the grinding machine device includes a working platform, and a movable support block on the working platform, a servo motor is arranged on the upper side of the movable support block, a grinding disc is arranged at the output end of the servo motor, and a point pressure type self-rotation positioning device is arranged near one side of the grinding disc, and a point pressure type self-rotation positioning device is arranged. The pressure-type self-rotating positioning device includes a mounting seat and a turntable, the turntable is located at the center position of the upper side of the mounting seat, and the two edge positions on the upper side of the mounting seat are provided with support frames, the upper end of each support frame is rotatably connected to a transmission frame, and the lower side of each transmission frame is provided with an upper pneumatic push rod, and a point contact anti-skid positioning block at the lower end of each upper pneumatic push rod. Through the utility model, it is realized that the surface contact positioning method can be changed to the point contact positioning method, avoiding the obstruction of the drum brake pad during the grinding process, and it has universal practicality for drum brake pads of different sizes. However, when the above technical solution is used to grind the brake drum blank, the stability is poor, which may lead to the phenomenon of insufficient grinding or excessive grinding during grinding. In addition, the operating work platform does not have a height adjustment device, and the operating height cannot be humanely optimized for operators of different heights, and the operator is prone to fatigue operation. Utility Model Content

[0003] The problem to be solved by the utility model is to provide an outer edge grinding device for a brake drum blank which is convenient for positioning, convenient for height adjustment and has good use stability.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] The utility model discloses a device for grinding the outer edge of a brake drum blank, comprising a frame, a workpiece clamping device and a grinding device;

[0006] The workpiece clamping device comprises an upper pneumatic upper pressing plate device and a lower positioning clamping device which are arranged up and down along the z-axis, and the upper pneumatic upper pressing plate device and the lower positioning clamping device are respectively fixed on the frame;

[0007] The upper pneumatic upper pressing plate device comprises an upper pressing plate pneumatic push rod and an upper pressing plate. The upper surface of the upper pressing plate is detachably rotatably connected to the upper pressing plate pneumatic push rod through a copper bearing. The upper pressing plate pneumatic push rod can drive the upper pressing plate to move along the z-axis.

[0008] The lower positioning clamping device includes a placing frame assembly, a supporting base and a rotating motor which are arranged in sequence from top to bottom along the z-axis, and also includes an electric three-jaw chuck and a three-jaw chuck pneumatic push rod which are arranged in the placing frame assembly and are stacked and fixed up and down. The placing frame assembly is rotatably supported on the supporting base, the supporting base is fixed on the frame, the rotating motor is fixed on the frame and drives the placing frame assembly to rotate, the placing frame assembly includes a placing plate arranged on the top surface, three avoidance grooves are evenly distributed on the placing plate, three clamping claws of the electric three-jaw chuck can move radially in the avoidance grooves, the bottom of the pneumatic push rod of the three-jaw chuck is fixed in the supporting base, and drives the electric three-jaw chuck to make the clamping claws retractable from the avoidance grooves along the z-axis direction;

[0009] The utility model also comprises a height adjustment device, and the frame is fixed on the height adjustment device.

[0010] As a further improvement of the above technical solution: the placement rack assembly also includes a lower rotating plate and a fixed rod, the two ends of the fixed rod are respectively fixedly connected to the placement plate and the lower rotating plate, the top end of the power output shaft of the workpiece rotation motor is fixed on the rotating plate, and the lower end of the three-jaw chuck pneumatic push rod is fixedly connected to the rotating plate.

[0011] As a further improvement of the above technical solution: the grinding device includes a transverse pneumatic push rod, a grinding wheel motor and a grinding disc connected in sequence along the x-axis, and also includes a dovetail groove guide rail and a guide rail slider that are parallel to the x-axis and adapt to each other. The bottom of the grinding wheel motor is fixed to the guide rail slider as a whole, and one end of the transverse pneumatic push rod and the dovetail groove guide rail are respectively fixed on the frame, and the grinding disc moves along the x-axis to point to the placement plate.

[0012] As a further improvement of the above technical solution: the height adjustment device includes an adjustment support base plate, a guide sleeve, a guide rod and a frame pneumatic push rod, the bottom of the frame is rectangular, the guide sleeve is fixed on the four corners under the frame, the guide rod is fixed on the adjustment support base plate, and the cross section of the guide rod is matched with the inner hole of the guide sleeve, the frame pneumatic push rod is fixed at the middle position of the lower wall of the frame, the lower end of the frame pneumatic push rod is fixed with an adjustment support base plate, the front and rear sides of the adjustment support base plate are both threadedly connected with screws, and the outside of the screw is rotatably connected with the base plate through a bearing;

[0013] An insert rod is fixed to the upper wall of the corresponding bottom plate below the adjusting support bottom plate, a through hole is opened on the adjusting support bottom plate corresponding to the left side of the screw rod, and an operating plate is fixed to the upper end of the screw rod.

[0014] As a further improvement of the above technical solution: universal wheels are fixed on the four corners of the lower wall of the adjustable support base plate.

[0015] The utility model has the following beneficial effects:

[0016] The utility model arranges an electric three-jaw chuck. Since the electric three-jaw chuck has an automatic centering function, after the brake drum blank is placed on a placement plate, the chuck jaws move toward and contact the brake drum blank, thereby realizing automatic positioning of the brake drum blank, so that the brake drum blank will not be eccentric when being polished, and the situation of insufficient polishing or excessive polishing is avoided. This solves the problem that the prior art is not convenient for positioning the brake drum blank, which may result in the phenomenon of insufficient polishing or excessive polishing during polishing.

[0017] The utility model provides a frame pneumatic push rod and a base plate, and the frame height is adjustable through the operation of the frame pneumatic push rod, so as to achieve the adjustment of the operating height, which is convenient for people of different heights to use comfortably. By utilizing the contact between the base plate and the ground, the support width of the adjustable support base plate can be increased, that is, the support area is increased, and the stability during use is improved, so as to avoid the outer edge grinding device of the brake drum blank from moving during use, thereby solving the problem that the prior art is not convenient for adjusting the operating height and the prior art has poor stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall structural diagram of an outer edge grinding device for a brake drum blank;

[0019] Figure 2 A rear structural diagram of an outer edge grinding device for a brake drum blank;

[0020] Figure 3 for Figure 2 Partial structure diagram in ;

[0021] Figure 4 The left side structural diagram of an outer edge grinding device for a brake drum blank.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Frame; 101. Upper pneumatic push rod; 1011. Connecting rod; 102. Horizontal pneumatic push rod; 103. Dovetail groove guide rail; 104. Workpiece rotating motor; 1041. Rotating plate; 105. Guide sleeve; 2. Grinding wheel motor; 201. Grinding disc; 202. Guide rail slider; 3. Upper pressure plate; 4. Placement plate; 401. Avoidance groove; 402. Fixed rod; 5. Electric three-jaw chuck; 501. Clamping claw; 6. Three-jaw chuck pneumatic push rod; 7. Adjustment support base plate; 701. Frame pneumatic push rod; 702. Guide rod; 703. Screw; 7031. Operation panel; 704. Universal wheel; 705. Perforation; 8. Base plate; 801. Insert rod. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings of the specification.

[0025] See also Figures 1 to 3 As shown, the utility model is a device for grinding the outer edge of a brake drum blank, comprising a frame 1, a workpiece clamping device 11 and a grinding device 12;

[0026] The workpiece clamping device 11 includes an upper pneumatic upper pressing plate device 111 and a lower positioning clamping device 112 which are arranged up and down along the z-axis, and the upper pneumatic upper pressing plate device 111 and the lower positioning clamping device 112 are respectively fixed on the frame 1;

[0027] The upper pneumatic upper pressing plate device 111 includes an upper pressing plate pneumatic push rod 101 and an upper pressing plate 3. The upper surface of the upper pressing plate 3 is detachably rotatably connected to the upper pressing plate pneumatic push rod 101 through a copper bearing. The upper pressing plate pneumatic push rod 101 can drive the upper pressing plate 3 to move along the z-axis.

[0028] The lower positioning clamping device 112 includes a placing rack assembly 500, a supporting base 600 and a rotating motor 104 which are arranged in sequence from top to bottom along the z-axis, and also includes an electric three-jaw chuck 5 and a three-jaw chuck pneumatic push rod 6 which are arranged in the placing rack assembly 500 and are stacked and fixed up and down. The placing rack assembly 500 is rotatably supported on the supporting base 600, and the supporting base 600 is fixed on the frame 1. The rotating motor 104 is fixed on the frame 1 and drives the placing rack assembly 500 to rotate. The placing rack assembly 500 includes a placing plate 4 placed on the top surface, and three avoidance grooves 401 are evenly distributed on the placing plate 4. The three claws 501 of the electric three-jaw chuck 5 can move radially in the avoidance grooves 401. The bottom of the three-jaw chuck pneumatic push rod 6 is fixed in the supporting base 600, and drives the electric three-jaw chuck 5 to make the claws 501 retractable from the avoidance grooves 401 along the z-axis direction;

[0029] It also includes a height adjustment device 100 , and the frame 1 is fixed on the height adjustment device 100 .

[0030] The placement rack assembly 500 also includes a lower rotating plate 1041 and a fixed rod 402. The two ends of the fixed rod 402 are respectively fixedly connected to the placement plate 4 and the lower rotating plate 1041. The top end of the power output shaft of the workpiece rotating motor 104 is fixed on the rotating plate 1041, and the lower end of the three-jaw chuck pneumatic push rod 6 is fixedly connected to the rotating plate 1041.

[0031] The grinding device 12 includes a transverse pneumatic push rod 102, a grinding wheel motor 2 and a grinding disc 201 connected in sequence along the x-axis, and also includes a dovetail groove guide rail 103 and a guide rail slider 202 that are adapted to each other and parallel to the x-axis. The bottom of the grinding wheel motor 2 is fixedly connected to the guide rail slider 202 as a whole. One end of the transverse pneumatic push rod 102 and the dovetail groove guide rail 103 are respectively fixed on the frame 1, and the grinding disc 201 moves along the x-axis to point to the placement plate 4.

[0032] The height adjustment device 100 includes an adjustment support base plate 7, a guide sleeve 105, a guide rod 702 and a frame pneumatic push rod 701. The bottom of the frame 1 is rectangular. The guide sleeve 105 is fixed to the four corners under the frame 1. The guide rod 702 is fixed to the adjustment support base plate 7, and the cross section of the guide rod 702 is matched with the inner hole of the guide sleeve 105. The frame pneumatic push rod 701 is fixed to the middle position of the lower wall of the frame 1. The lower end of the frame pneumatic push rod 701 is fixed with the adjustment support base plate 7. The front and rear sides of the adjustment support base plate 7 are both threadedly connected with screws 703. The outside of the screw 703 is rotatably connected with the base plate 8 through a bearing.

[0033] An insertion rod 801 is fixed to the upper wall of the corresponding base plate 8 below the adjustment support base plate 7, a through hole 705 is opened on the adjustment support base plate 7 corresponding to the left side of the screw rod 703, and an operating plate 7031 is fixed to the upper end of the screw rod 703.

[0034] Universal wheels 704 are fixed to the four corners of the lower wall of the adjustable support base plate 7.

Claims

1. A device for grinding the outer edge of a brake drum blank, comprising a frame (1), a workpiece clamping device (11) and a grinding device (12); Features: The workpiece clamping device (11) comprises an upper pneumatic upper pressing plate device (111) and a lower positioning clamping device (112) which are arranged vertically along the z-axis, and the upper pneumatic upper pressing plate device (111) and the lower positioning clamping device (112) are respectively fixed on the frame (1); The upper pneumatic upper pressure plate device (111) comprises an upper pressure plate pneumatic push rod (101) and an upper pressure plate (3); the upper surface of the upper pressure plate (3) is detachably rotatably connected to the upper pressure plate pneumatic push rod (101) via a copper bearing, and the upper pressure plate pneumatic push rod (101) can drive the upper pressure plate (3) to move along the z-axis; The lower positioning clamping device (112) comprises a placement rack assembly (500), a support base (600) and a rotating motor (104) arranged in sequence from top to bottom along the z-axis, and also comprises an electric three-jaw chuck (5) and a three-jaw chuck pneumatic push rod (6) arranged in the placement rack assembly (500) and stacked and fixed up and down, wherein the placement rack assembly (500) is rotatably supported on the support base (600), the support base (600) is fixed on the frame (1), and the rotating motor (104) is fixed on the frame. (1) and drives the rack assembly (500) to rotate, the rack assembly (500) comprising a placing plate (4) placed on the top surface, the placing plate (4) having three avoidance grooves (401) evenly distributed thereon, the three clamping claws (501) of the electric three-jaw chuck (5) being movable in radial direction in the avoidance grooves (401), the bottom of the three-jaw chuck pneumatic push rod (6) being fixed in the supporting base (600), and driving the electric three-jaw chuck (5) to make the clamping claws (501) retractable from the avoidance grooves (401) along the z-axis direction; It also comprises a height adjustment device (100), and the frame (1) is fixed on the height adjustment device (100).

2. The outer edge grinding device of a brake drum blank according to claim 1, characterized in that: The placement rack assembly (500) further comprises a lower rotating plate (1041) and a fixed rod (402), the two ends of the fixed rod (402) being fixedly connected to the placement plate (4) and the lower rotating plate (1041), respectively; the top end of the power output shaft of the rotating motor (104) is fixed to the rotating plate (1041), and the lower end of the three-jaw chuck pneumatic push rod (6) is fixedly connected to the rotating plate (1041).

3. The outer edge grinding device of a brake drum blank according to claim 1, characterized in that: The grinding device (12) comprises a transverse pneumatic push rod (102), a grinding wheel motor (2) and a grinding disc (201) connected in sequence along the x-axis, and also comprises a dovetail groove guide rail (103) and a guide rail slider (202) that are adapted to each other and are parallel to the x-axis, wherein the bottom of the grinding wheel motor (2) is fixedly connected to the guide rail slider (202) as a whole, and one end of the transverse pneumatic push rod (102) and the dovetail groove guide rail (103) are respectively fixed to the frame (1), and the grinding disc (201) moves along the x-axis to point to the placement plate (4).

4. The outer edge grinding device of a brake drum blank according to claim 1, characterized in that: The height adjustment device (100) comprises an adjustment support base plate (7), a guide sleeve (105), a guide rod (702) and a frame pneumatic push rod (701); the bottom of the frame (1) is rectangular; the guide sleeve (105) is fixed to the four corners under the frame (1); the guide rod (702) is fixed to the adjustment support base plate (7), and the cross section of the guide rod (702) is matched with the inner hole of the guide sleeve (105); the frame pneumatic push rod (701) is fixed to the middle position of the lower wall of the frame (1); the lower end of the frame pneumatic push rod (701) is fixed with the adjustment support base plate (7); the front and rear sides of the adjustment support base plate (7) are both threadedly connected with screw rods (703); the outside of the screw rod (703) is rotatably connected to the base plate (8) via a bearing; An insertion rod (801) is fixed to the upper wall of the bottom plate (8) below the adjustable support bottom plate (7), a through hole (705) is provided on the adjustable support bottom plate (7) to the left of the screw rod (703), and an operating plate (7031) is fixed to the upper end of the screw rod (703).

5. The outer edge grinding device of a brake drum blank according to claim 4, characterized in that: Universal wheels (704) are fixed at the four corners of the lower wall of the adjustable support base plate (7).

Images