Clamping tool for brake drum production

Abstract

The utility model relates to the technical field of brake drum clamping, in particular to a clamping tool for brake drum production, which comprises a brake drum, and is characterized in that a foundation pillar is arranged at the center of the inner wall of the brake drum, three electric push rods are fixedly connected to the outer side of the foundation pillar, and the output ends of the electric push rods on the two sides are rotatably connected with clamping rollers. And the output end of the electric push rod at the top is fixedly connected with a spring damper, the output end of the spring damper is fixedly connected with a fixing frame, the interior of the fixing frame is rotationally connected with a driving roller, the rear side of the base column is fixedly connected with a base plate, and the two sides of the top of the base plate are rotationally connected with limiting clamps. The brake drum clamping device has the advantages that in the process of machining the inner wall of the brake drum, the motor can drive the driving roller to rotate, the driving roller drives the whole brake drum to rotate, the contact position of the clamping device and the brake drum is changed, the brake drum is stably clamped, and meanwhile a processor can conveniently conduct machining operation on any position of the brake drum.

Description

Technical Field

[0001] The utility model relates to the technical field of brake drum clamping, in particular to a clamping tool for brake drum production. Background Art

[0002] As a key component of the automobile braking system, the quality of the brake drum is directly related to the safety performance of the automobile. In the production process of the brake drum, the main function of the clamping tool is to ensure that the brake drum can be positioned stably and accurately in various links such as processing, testing and assembly, so as to meet its high precision and high stability requirements.

[0003] A clamping structure for brake drum production disclosed in Chinese patent CN202120801171.X can realize rapid clamping and fixing of the brake drum, and can be applied to brake drums of different models, which is very convenient to use. However, the clamping structure for brake drum production fixes the clamping part of the brake drum, which makes it inconvenient to process the clamping part during the processing. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a clamping tool for brake drum production, which effectively solves the deficiencies of the prior art.

[0005] The purpose of the utility model is achieved through the following technical scheme: a clamping tool for brake drum production, including a brake drum, characterized in that: a base column is arranged at the center of the inner wall of the brake drum, three electric push rods are fixedly connected to the outside of the base column, the output ends of the electric push rods on both sides are rotatably connected to clamping rollers, the output ends of the electric push rods on the top are fixedly connected to spring dampers, the output ends of the spring dampers are fixedly connected to a fixed frame, the interior of the fixed frame is rotatably connected to a driving roller, the rear side of the base column is fixedly connected to a base plate, and the two sides of the top of the base plate are rotatably connected to limit clamps.

[0006] Optionally, one end of the fixed frame is fixedly connected to a motor, the output end of the motor is fixedly connected to the rotating shaft of the driving roller, the clamping roller and the driving roller are both adapted to the shape of the inner wall of the brake drum, and the friction coefficient between the driving roller and the inner wall of the brake drum is greater than two.

[0007] The above technical solution is adopted: by arranging a clamping roller and a driving roller connected by an electric push rod inside the brake drum, the clamping roller and the driving roller are pressed against the inner wall of the brake drum to form a clamping structure, and in the process of processing the inner wall of the brake drum, the driving roller can be driven by the motor to rotate, and the driving roller can drive the entire brake drum to rotate, so as to change the contact position between the clamping device and the brake drum, while stably clamping the brake drum, it is convenient for the processor to perform processing operations on any position of the brake drum.

[0008] Optionally, the distances from the output ends of the three electric push rods to the base column remain synchronously equal, and the telescopic stroke of the spring damper is less than one centimeter.

[0009] The above technical solution is adopted: by arranging an electric push rod on the outside of the base column, the distance between the clamping roller and the driving roller and the base column can be adjusted, so that the clamping device can adapt to brake drums of different specifications, and in the process of completing the clamping and processing the brake drum, the spring damper can buffer and absorb the vibration generated during the processing, thereby improving the clamping stability of the clamping device on the brake drum.

[0010] Optionally, the limiting clamp is in an arc shape, and the arc axis of the limiting clamp coincides with the axis of the base column.

[0011] The above technical solution is adopted: by providing a limiting clamp on the top of the clamping device, the top of the brake drum in the clamped state can be limited and stabilized, thereby improving the stability of the brake drum during the rotation process.

[0012] Optionally, the inner shape of the limit clamp is matched with the outer shape of the clamped brake drum, the friction coefficient between the limit clamp and the brake drum is less than 0.5, the limit clamp is made of alloy spring steel, and the end of the limit clamp shrinks inward.

[0013] The above technical solution is adopted: by setting the material of the limit clamp to alloy spring steel, it can shrink inward under the action of its own elasticity. When the radius of the brake drum being processed is smaller than the radius of the limit clamp, the limit clamp can shrink inward under the action of its own elasticity and fit the brake drum, so that it can adapt to brake drums of different specifications.

[0014] Optionally, a torsion spring is sleeved on one end of the rotating shaft of the limiting clamp, and the torsion force of the torsion spring causes the limiting clamp to rotate inward.

[0015] The above technical solution is adopted: by setting a torsion spring on the rotating shaft of the limit clamp, the limit clamp is rotated and opened before installing the brake drum to avoid interfering with the installation of the brake drum. After the installation is completed, under the action of the torsion spring, the limit clamp and the brake drum fit together to achieve a limiting effect.

[0016] The utility model has the following advantages:

[0017] 1. The clamping tool for brake drum production has a clamping roller and a driving roller connected by an electric push rod arranged inside the brake drum, and the clamping roller and the driving roller are pressed against the inner wall of the brake drum to form a clamping structure. In the process of processing the inner wall of the brake drum, the driving roller can be driven by a motor to rotate, and the driving roller can drive the entire brake drum to rotate, so as to change the contact position between the clamping device and the brake drum. While stably clamping the brake drum, it is convenient for the processor to perform processing operations on any position of the brake drum. By arranging an electric push rod on the outer side of the base column, the distance between the clamping roller and the driving roller and the base column can be adjusted, so that the clamping device can adapt to brake drums of different specifications. In the process of completing the clamping and processing the brake drum, the spring damper can buffer and absorb the vibration generated in the processing process, thereby improving the clamping stability of the clamping device on the brake drum.

[0018] 2. The clamping tool for brake drum production uses a limit clamp at the top of the clamping device to limit and stabilize the top of the brake drum in the clamped state, thereby improving the stability of the brake drum during rotation. The limit clamp is made of alloy spring steel so that it can shrink inward under its own elasticity. When the radius of the brake drum being processed is smaller than the radius of the limit clamp, the limit clamp can shrink inward under its own elasticity and fit the brake drum, thereby being able to adapt to brake drums of different specifications.

[0019] 3. The clamping tool for brake drum production has a torsion spring on the rotating shaft of the limit clamp. The limit clamp is rotated and opened before installing the brake drum to avoid interfering with the installation of the brake drum. After the installation is completed, under the action of the torsion spring, the limit clamp fits with the brake drum to achieve a limiting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the clamping state of the utility model;

[0021] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 It is a rear view structural schematic diagram of the utility model in a clamping state;

[0023] Figure 4 It is a structural schematic diagram of the clamping tool of the utility model;

[0024] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 7 It is a schematic cross-sectional view of the clamping tool of the utility model;

[0027] Figure 8 For this utility model Figure 7 Schematic diagram of the enlarged structure at D in the middle.

[0028] In the figure: 1-brake drum, 2-base column, 3-electric push rod, 4-clamping roller, 5-spring damper, 6-fixed frame, 7-driving roller, 8-base plate, 9-limiting clamp, 10-motor, 11-torsion spring. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figures 1 to 8 As shown, a clamping tool for brake drum production includes a brake drum 1, which is characterized in that: a base column 2 is arranged at the center of the inner wall of the brake drum 1, three electric push rods 3 are fixedly connected to the outer side of the base column 2, the output ends of the electric push rods 3 on both sides are rotatably connected to clamping rollers 4, the output end of the top electric push rod 3 is fixedly connected to a spring damper 5, the output end of the spring damper 5 is fixedly connected to a fixed frame 6, the interior of the fixed frame 6 is rotatably connected to a driving roller 7, the rear side of the base column 2 is fixedly connected to a base plate 8, and the two sides of the top of the base plate 8 are rotatably connected to limit clamps 9.

[0031] Embodiment 1: A motor 10 is fixedly connected to one end of the fixed frame 6, and the output end of the motor 10 is fixedly connected to the rotating shaft of the driving roller 7. The clamping roller 4 and the driving roller 7 are both adapted to the shape of the inner wall of the brake drum 1, and the friction coefficient between the driving roller 7 and the inner wall of the brake drum 1 is greater than two. By arranging the clamping roller 4 and the driving roller 7 connected by the electric push rod 3 inside the brake drum 1, the clamping roller 4 and the driving roller 7 are pressed against the inner wall of the brake drum 1 to form a clamping structure, and in the process of processing the inner wall of the brake drum 1, the driving roller 7 can be driven by the motor 10 to rotate, and the driving roller 7 can drive the entire brake drum 1 to rotate, so as to change the contact position between the clamping device and the brake drum, while stably clamping the brake drum, it is convenient for the processor to perform processing operations on any position of the brake drum.

[0032] Embodiment 2: The distances from the output ends of the three electric push rods 3 to the base column 2 are kept synchronously equal, and the telescopic stroke of the spring damper 5 is less than one centimeter. By arranging the electric push rod 3 on the outer side of the base column 2, the distances from the clamping roller 4 and the driving roller 7 to the base column 2 can be adjusted, so that the clamping device can adapt to brake drums of different specifications, and in the process of completing the clamping and processing the brake drum, the spring damper 5 can buffer and absorb the vibration generated during the processing, thereby improving the clamping stability of the clamping device on the brake drum.

[0033] Embodiment 3: The limit clamp 9 is arc-shaped, and the arc axis of the limit clamp 9 coincides with the axis of the base column 2. By placing the limit clamp 9 on the top of the clamping device, the top of the brake drum 1 in the clamped state can be limited and stabilized, thereby improving the stability of the brake drum during rotation.

[0034] Embodiment 4: The inner shape of the limit clamp 9 is adapted to the outer shape of the clamped brake drum 1, the friction coefficient between the limit clamp 9 and the brake drum 1 is less than 0.5, the material of the limit clamp 9 is alloy spring steel, and the end of the limit clamp 9 is contracted inwardly. By setting the material of the limit clamp 9 to alloy spring steel, it can be contracted inwardly under the action of its own elasticity. When the radius of the brake drum being processed is smaller than the radius of the limit clamp 9, the limit clamp 9 can be contracted inwardly under the action of its own elasticity and fit the brake drum, so that it can adapt to brake drums of different specifications.

[0035] Embodiment 5: A torsion spring 11 is sleeved on one end of the rotating shaft of the limit clamp 9. The torsion force of the torsion spring 11 causes the limit clamp 9 to rotate inward. By arranging the torsion spring 11 on the rotating shaft of the limit clamp 9, the limit clamp 9 is rotated and opened before installing the brake drum 1 to avoid interfering with the installation of the brake drum. After the installation is completed, under the action of the torsion spring 11, the limit clamp 9 and the brake drum 1 are fitted together to achieve a limiting effect.

[0036] The working principle of the utility model is as follows:

[0037] S1. A clamping roller 4 and a driving roller 7 connected by an electric push rod 3 are arranged inside the brake drum 1. The clamping roller 4 and the driving roller 7 are pressed against the inner wall of the brake drum 1 to form a clamping structure. In the process of processing the inner wall of the brake drum 1, the driving roller 7 can be driven by the motor 10 to rotate, and the driving roller 7 can drive the entire brake drum 1 to rotate, so as to change the contact position between the clamping device and the brake drum, so as to stably clamp the brake drum and facilitate the processor to perform processing operations on any position of the brake drum;

[0038] S2. An electric push rod 3 is arranged on the outer side of the base column 2, so that the distance between the clamping roller 4 and the driving roller 7 and the base column 2 can be adjusted, so that the clamping device can adapt to brake drums of different specifications, and in the process of completing the clamping and processing the brake drum, the spring damper 5 can buffer and absorb the vibration generated during the processing, thereby improving the clamping stability of the clamping device on the brake drum.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The clamping tool for brake drum production is provided with a clamping roller 4 and a driving roller 7 connected by an electric push rod 3 inside the brake drum 1, and the clamping roller 4 and the driving roller 7 are pressed against the inner wall of the brake drum 1 to form a clamping structure. In the process of processing the inner wall of the brake drum 1, the motor 10 can drive the driving roller 7 to rotate, and the driving roller 7 can drive the entire brake drum 1 to rotate, so as to change the contact position between the clamping device and the brake drum. While stably clamping the brake drum, it is convenient for the processor to perform processing operations on any position of the brake drum. By arranging an electric push rod 3 on the outer side of the base column 2, the distance between the clamping roller 4 and the driving roller 7 and the base column 2 can be adjusted, so that the clamping device can adapt to brake drums of different specifications. In the process of completing the clamping and processing the brake drum, the spring damper 5 can buffer and absorb the vibration generated in the processing process, thereby improving the clamping stability of the clamping device on the brake drum.

[0041] 2. The clamping tool for brake drum production can limit and stabilize the top of the brake drum 1 in the clamped state by means of a limit clamp 9 at the top of the clamping device, thereby improving the stability of the brake drum during rotation. By setting the material of the limit clamp 9 to alloy spring steel, the limit clamp 9 can shrink inwardly under the action of its own elasticity. When the radius of the brake drum being processed is smaller than the radius of the limit clamp 9, the limit clamp 9 can shrink inwardly under the action of its own elasticity and fit the brake drum, thereby enabling it to adapt to brake drums of different specifications.

[0042] 3. The clamping tool for brake drum production has a torsion spring 11 on the rotating shaft of the limit clamp 9. The limit clamp 9 is rotated and opened before installing the brake drum 1 to avoid interfering with the installation of the brake drum. After the installation is completed, under the action of the torsion spring 11, the limit clamp 9 and the brake drum 1 are fitted to achieve a limiting effect.

Claims

1. A clamping tool for brake drum production, comprising a brake drum (1), characterized in that: A base column (2) is arranged at the center of the inner wall of the brake drum (1), three electric push rods (3) are fixedly connected to the outer side of the base column (2), the output ends of the electric push rods (3) on both sides are rotatably connected to clamping rollers (4), the output end of the electric push rod (3) on the top is fixedly connected to a spring damper (5), the output end of the spring damper (5) is fixedly connected to a fixed frame (6), the interior of the fixed frame (6) is rotatably connected to a driving roller (7), the rear side of the base column (2) is fixedly connected to a base plate (8), and the top of the base plate (8) is rotatably connected to limit clamps (9) on both sides.

2. A clamping tool for brake drum production according to claim 1, characterized in that: One end of the fixed frame (6) is fixedly connected to a motor (10), the output end of the motor (10) is fixedly connected to the rotating shaft of the driving roller (7), the clamping roller (4) and the driving roller (7) are both adapted to the shape of the inner wall of the brake drum (1), and the friction coefficient between the driving roller (7) and the inner wall of the brake drum (1) is greater than two.

3. A clamping tool for brake drum production according to claim 2, characterized in that: The distances from the output ends of the three electric push rods (3) to the base column (2) are kept synchronously equal, and the telescopic stroke of the spring damper (5) is less than one centimeter.

4. A clamping tool for brake drum production according to claim 3, characterized in that: The limiting clamp (9) is in the shape of an arc, and the arc axis of the limiting clamp (9) coincides with the axis of the base column (2).

5. A clamping tool for brake drum production according to claim 4, characterized in that: The inner shape of the limit clamp (9) is matched with the outer shape of the clamped brake drum (1), the friction coefficient between the limit clamp (9) and the brake drum (1) is less than 0.5, the material of the limit clamp (9) is alloy spring steel, and the end of the limit clamp (9) is contracted inward.

6. A clamping tool for brake drum production according to claim 5, characterized in that: One end of the rotating shaft of the limiting clamp (9) is sleeved with a torsion spring (11), and the torsion force of the torsion spring (11) causes the limiting clamp (9) to rotate inwards.

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