Outer circle end face turning device for automobile brake drum

Abstract

The utility model discloses an automobile brake drum outer circle end face turning device which comprises a cutting outer shell, a main shaft is rotationally connected to the middle of the left side in the cutting outer shell, a mounting shell is arranged at the right end of the main shaft, and sliding grooves are formed in the four corners of the right side in the mounting shell. The clamping mechanism comprises an outer gear ring, gears, a first sliding block, a first rack plate, a first clamping block and an auxiliary clamping assembly, the outer gear ring is rotationally connected to the middle of the right side of the interior of the mounting shell, the gears are rotationally connected to the four corners of the right side of the interior of the mounting shell correspondingly, and the four gears are distributed in a cross shape. By adjusting the position of the second clamping block, the inner wall and the outer surface of the automobile brake drum of different specifications can be limited at the same time, the situation that the brake drum is inclined due to stress when a cutter makes contact with the brake drum rotating at a high speed is avoided, and the cutting precision of the outer circle end face of the automobile brake drum is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake drum manufacturing technology, specifically to an automotive brake drum outer cylindrical end face device. Background Technology

[0002] The automotive brake drum is the core component of a drum braking system. Typically made of cast iron, it is installed inside the wheel and connected to the wheel hub. Its function is to convert the rotational kinetic energy of the wheel into heat energy by having the internal brake shoes expand outward under hydraulic pressure, creating frictional resistance against the inner wall of the brake drum. This allows the vehicle to decelerate or stop. This structure features strong braking force, low cost, and easy maintenance, and is commonly found in the rear wheel braking systems of commercial vehicles and economy cars. The automotive brake drum is cylindrical in shape. After the brake drum blank is manufactured, the outer cylindrical end face of the brake drum needs to be machined to ensure assembly accuracy. This requires an automotive brake drum outer cylindrical end face assembly. Currently, most automotive brake drum outer cylindrical end face assemblies are made of… The device consists of a lathe and a three-jaw chuck. When cutting the end face of an automotive brake drum, the three jaws of the three-jaw chuck first move outward to contact the inner wall of the brake drum, thus limiting the brake drum. Then, the motor drives the spindle to rotate, and at the same time, the two-axis module drives the tool holder and cutting tool to move, cutting the outer cylindrical end face of the automotive brake drum. Traditional automotive brake drum outer cylindrical end face cutting devices fix the automotive brake drum by having the jaws of the three-jaw chuck contact the inner wall of the brake drum. When the cutting tool contacts the high-speed rotating brake drum, the outer surface of the brake drum lacks limiting, which can easily cause tilting and affect the cutting accuracy of the outer cylindrical end face of the automotive brake drum. Therefore, we propose an automotive brake drum outer cylindrical end face cutting device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a device for the outer cylindrical end face of an automobile brake drum. It is equipped with a clamping mechanism. By adjusting the position of the clamping block two, the inner wall and outer surface of automobile brake drums of different specifications can be limited at the same time. This avoids the situation where the brake drum is tilted due to force when the cutting tool contacts the high-speed rotating brake drum, improves the cutting accuracy of the outer cylindrical end face of the automobile brake drum, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an outer cylindrical end face device for an automobile brake drum, comprising a cutting shell, wherein a main shaft is rotatably connected to the middle of the left side inside the cutting shell, and a mounting shell is provided at the right end of the main shaft, wherein sliding grooves are provided at the four corners of the right side inside the mounting shell, and further comprising a clamping mechanism;

[0005] Clamping mechanism: It includes an external gear ring, gears, slider 1, rack plate 1, clamping block 1, and auxiliary clamping components. The external gear ring is rotatably connected to the middle of the right side inside the mounting housing. The gears are rotatably connected to the four corners of the right side inside the mounting housing, and the four gears are arranged in a cross shape. The left end of each gear is engaged with the external gear ring. Slider 1 is slidably connected to the inner end of the slide groove. Rack plate 1 is located at the left end of slider 1 and is engaged with the right end of the outer surface of the horizontally adjacent gear. Clamping block 1 is located at the right end of slider 1 near the center of the mounting housing, which can quickly limit the inner wall of the car brake drum. The auxiliary clamping components are located between the gears and the inside right side of the mounting housing. The clamping mechanism can simultaneously limit the inner wall and outer surface of car brake drums of different specifications by adjusting the position of clamping block 2, avoiding the situation where the brake drum tilts due to force when the cutting tool contacts the high-speed rotating brake drum, and improving the cutting accuracy of the outer end face of the car brake drum.

[0006] Furthermore, the auxiliary clamping assembly includes a second slider, a second rack plate, a moving block, and a second clamping block. The second slider is slidably connected to the outer end of the slide groove, the second rack plate is disposed at the left end of the first slider, and the second rack plate is meshed with the right end of the outer surface of the gear. The moving block is slidably connected inside the second slider, and the second clamping block is disposed at the right end of the moving block, which can quickly limit the outer surface of the car brake drum.

[0007] Furthermore, the auxiliary clamping assembly also includes a lead screw and a knob. The lead screw is rotatably connected to the inside of the second slider, and the outer surface of the lead screw is threadedly connected to the inner surface of the laterally adjacent moving block. The knob is located at the outer end of the lead screw, and the position of the moving block can be changed by rotating the lead screw, thereby adapting to different specifications of automotive brake drums.

[0008] Furthermore, the clamping mechanism also includes a motor, a conductive slip ring, and a contact head. The motor is located inside the mounting housing on the left side in the middle, and the right end of the output shaft of the motor is fixedly connected to the left side of the external gear ring. The conductive slip ring is located on the left side of the outer surface of the mounting housing, and the contact head is located on the front end of the left side wall of the cutting housing. The input end of the contact head is electrically connected to the output end of the microcontroller, and the output end of the conductive slip ring is electrically connected to the input end of the motor, providing a stable drive for the rapid fixing of the automotive brake drum.

[0009] Furthermore, it also includes a second motor, which is located inside the cutting housing on the left side. The input end of the second motor is electrically connected to the output end of the microcontroller, and the right end of the output shaft of the second motor is fixedly connected to the left end of the main shaft, providing a basis for the high-speed rotation of the car brake drum.

[0010] Furthermore, it also includes a two-axis module, a tool holder, and a cutting tool. The two-axis module is located in the middle of the bottom wall of the cutting housing. The input end of the two-axis module is electrically connected to the output end of the microcontroller. The tool holder is located at the upper end of the two-axis module, and the cutting tool is located at the upper end of the tool holder, providing a basis for the cutting work of the outer cylindrical end face of the automotive brake drum.

[0011] Furthermore, it also includes a microcontroller, which is located at the front right end of the cutting housing. The input terminal of the microcontroller is electrically connected to an external power supply to provide control for the cutting operation of the outer cylindrical end face of the automotive brake drum.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This automotive brake drum outer end face device has the following advantages:

[0013] The rotation of the gear drives the rack plate 1 and rack plate 2 to move relative to each other, which in turn drives the clamping block 1 and clamping block 2 to move relative to each other. This can simultaneously limit the inner wall and outer surface of the car brake drum, making the car brake drum more secure. In conjunction with the rotation of the knob, the moving block and clamping block 2 can be moved, which can realize the quick fixing of car brake drums of different specifications. This avoids the situation where the brake drum is tilted due to force when the cutting tool contacts the high-speed rotating brake drum, thereby improving the cutting accuracy of the outer end face of the car brake drum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the clamping mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the auxiliary clamping component structure of this utility model.

[0018] In the diagram: 1. Cutting housing, 2. Spindle, 3. Mounting housing, 4. Clamping mechanism, 41. External gear ring, 42. Gear, 43. Slider 1, 44. Rack plate 1, 45. Clamping block 1, 46. Auxiliary clamping assembly, 461. Slider 2, 462. Rack plate 2, 463. Moving block, 464. Clamping block 2, 465. Lead screw, 466. Knob, 47. Motor 1, 48. Conductive slip ring, 49. Contact head, 5. Motor 2, 6. Two-axis module, 7. Tool holder, 8. Cutting tool, 9. Microcontroller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This embodiment provides a technical solution: an outer cylindrical end face device for an automobile brake drum, including a cutting housing 1. A main shaft 2 is rotatably connected to the middle of the left side inside the cutting housing 1. A mounting housing 3 is located at the right end of the main shaft 2. Slide grooves are provided at the four corners of the right side inside the mounting housing 3, arranged in a cross shape with the center of the mounting housing 3 as the center. It also includes a clamping mechanism 4 and a second motor 5. The second motor 5 is located on the left side inside the cutting housing 1. The input end of the second motor 5 is electrically connected to the output end of a microcontroller 9. The right end of the output shaft of the second motor 5 is fixedly connected to the left end of the main shaft 2, providing a foundation for the high-speed rotation of the automobile brake drum. It also includes a two-axis module 6, a tool holder 7, and a cutting tool 8. The two-axis module 6 is located in the middle of the bottom wall of the cutting housing 1. The two-axis module 6 is divided into a transverse movement module and a longitudinal movement module. The transverse movement module includes a transverse slide rail, a transverse slide block slidably connected to the transverse slide rail, a transverse motor mounted on the side of the transverse slide rail, and a transverse motor whose output shaft is fixedly connected to a horizontal... The longitudinal module includes a longitudinal slide rail fixedly connected to the upper end of the transverse slide, a longitudinal slide block slidably connected to the longitudinal slide rail, a longitudinal motor mounted on the side of the longitudinal slide rail, and a longitudinal lead screw fixedly connected to the output shaft of the longitudinal motor, with the longitudinal lead screw threadedly connected to the longitudinal slide block. The input end of the two-axis module 6 is electrically connected to the output end of the microcontroller 9. The tool holder 7 is located at the upper end of the two-axis module 6, and the cutting tool 8 is located at the upper end of the tool holder 7. The upper end of the tool holder 7 has vertically distributed mounting holes, which can be used to install the cutting tool 8 into the appropriate mounting holes according to the requirements, so as to meet the height adjustment of the cutting tool 8 and adapt to the vertical position adjustment during cutting, providing a basis for the cutting work of the outer circle end face of the automobile brake drum. It also includes a microcontroller 9, which is located at the front right end of the cutting housing 1. The input end of the microcontroller 9 is electrically connected to an external power supply, providing control for the cutting work of the outer circle end face of the automobile brake drum.

[0021] Clamping mechanism 4 includes an external gear ring 41, gears 42, slider 43, rack plate 44, clamping block 45, and auxiliary clamping assembly 46. The external gear ring 41 is rotatably connected to the middle right side of the interior of the mounting housing 3. The gears 42 are rotatably connected to the four corners of the right side of the interior of the mounting housing 3, arranged in a cross pattern. The left ends of all gears 42 are engaged with the external gear ring 41. The sliders 43 are slidably connected to the inner ends of the slide grooves. The rack plates 44 are all located at the left ends of the sliders 43, and are engaged with the right ends of the outer surfaces of the adjacent gears 42. The clamping blocks 45 are all located on the right side of the sliders 43 near the center of the mounting housing 3. The auxiliary clamping components 46 are all located inside the mounting housing 3 on the right side between the mounting housing 3 and the gear 42. Each auxiliary clamping component 46 includes a second slider 461, a second rack plate 462, a moving block 463, and a second clamping block 464. The second slider 461 is slidably connected to the outer end of the slide groove. The second rack plate 462 is located at the left end of the first slider 43 and meshes with the right end of the outer surface of the gear 42. The moving block 463 is slidably connected inside the second slider 461. The second clamping block 464 is located at the right end of the moving block 463. This allows for quick positioning of the outer surface of the car brake drum. The clamping assembly 46 also includes a lead screw 465 and a knob 466. The lead screw 465 is rotatably connected to the inside center of the slider 461. The outer surface of the lead screw 465 is threadedly connected to the inner surface of the laterally adjacent moving block 463. The knob 466 is located at the outer end of the lead screw 465. The position of the moving block 463 can be changed by rotating the lead screw 465, thereby adapting to different sizes of automotive brake drums. The clamping mechanism 4 also includes a motor 47, a conductive slip ring 48, and a contact head 49. The motor 47 is located in the middle left side of the inside of the mounting housing 3. The right end of the output shaft of the motor 47 is fixedly connected to the middle left side of the external gear ring 41. The conductive slip ring 48 is located in the middle left side of the mounting housing 3. On the left side of the outer surface of the housing 3, the contact head 49 is located at the middle of the front end of the left side wall of the cutting housing 1. The input end of the contact head 49 is electrically connected to the output end of the microcontroller 9. The conductive slip ring 48 and the contact head 49 can conduct electricity through contact. The output end of the conductive slip ring 48 is electrically connected to the input end of the motor 47, providing a stable drive for the rapid fixing of the car brake drum. A clamping mechanism 4 is provided. By adjusting the position of the clamping block 464, the inner wall and outer surface of car brake drums of different specifications can be limited simultaneously, avoiding the situation where the brake drum is tilted due to force when the cutting tool 8 contacts the high-speed rotating brake drum, thus improving the cutting accuracy of the outer end face of the car brake drum.

[0022] The working principle of the automotive brake drum outer end face device provided by this utility model is as follows: When cutting the outer end face of the automotive brake drum, first fix the automotive brake drum, adjust the position of clamping block 464 according to the thickness of the automotive brake drum wall, rotate the four knobs 466 the same number of turns, driving the moving block 463 and clamping block 464 to move. When the knob 466 rotates clockwise, clamping block 464 moves inward, and when the knob 466 rotates counterclockwise, clamping block 464 moves outward, until the four clamping blocks 464 move to the appropriate position, and one end of the automotive brake drum is attached to the right end of the mounting shell 3, so that the four clamping blocks 45 are located inside the mounting shell 3 and the four clamping blocks 464 are located outside the mounting shell 3. At this time, the microcontroller 9 controls the motor 47 to run through the conduction of the conductive slip ring 48 and the contact head 49. The motor 47 outputs... The output shaft drives the external gear ring 41 to rotate, and the gear 42 also rotates accordingly. As the gear 42 rotates, the four rack plates 44 move outward synchronously, driving the slider 43 and clamping block 45 to move outward synchronously. The four rack plates 462 also move inward synchronously, driving the slider 461 and clamping block 464 to move inward synchronously. When the clamping block 45 is in contact with the inner wall of the brake drum, the clamping block 464 is also in contact with the outer surface of the brake drum. At this time, the inner wall and outer surface of the brake drum are simultaneously limited, making the brake drum more stable. Then, the microcontroller 9 controls the motor 5 to run. The motor 5 drives the main shaft 2 and the mounting shell 3 to rotate, and the brake drum also rotates at high speed. The two-axis module 6 works to drive the tool holder 7 and the cutting tool 8 to move, so that the cutting tool 8 can precisely cut the outer end face of the brake drum, realizing the cutting work of the outer end face of the automobile brake drum.

[0023] It is worth noting that the microcontroller 9 disclosed in the above embodiments is an N32G455RCL7 microcontroller, motor 47 is a DKM motor, motor 5 is a SIMOTICS M motor, and the two-axis module 6 is an OMDDHO2 two-axis module. The microcontroller 9 controls the operation of motor 47, motor 5 and two-axis module 6 using methods commonly used in the prior art.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for the outer cylindrical end face of an automotive brake drum, comprising a cutting housing (1), wherein a main shaft (2) is rotatably connected to the middle of the left side of the inner side of the cutting housing (1), and a mounting housing (3) is provided at the right end of the main shaft (2), wherein the four corners of the right side of the inner side of the mounting housing (3) are provided with sliding grooves, characterized in that: It also includes a clamping mechanism (4); Clamping mechanism (4): It includes an external gear ring (41), gears (42), slider one (43), rack plate one (44), clamping block one (45) and auxiliary clamping assembly (46). The external gear ring (41) is rotatably connected to the middle of the right side inside the mounting shell (3). The gears (42) are rotatably connected to the four corners of the right side inside the mounting shell (3). The four gears (42) are arranged in a cross shape. The left end of each gear (42) is meshed with the external gear ring (41). Slider one (43) is slidably connected to the inner end of the slide groove. Rack plate one (44) is set at the left end of slider one (43). Rack plate one (44) is meshed with the right end of the outer surface of the horizontally adjacent gear (42). Clamping block one (45) is set at the right end of slider one (43) near the center of the mounting shell (3). Auxiliary clamping assembly (46) is set between the right side inside the mounting shell (3) and the gears (42).

2. The automotive brake drum outer cylindrical end face device according to claim 1, characterized in that: It also includes a microcontroller (9), which is located on the front right side of the cutting shell (1), and the input terminal of the microcontroller (9) is electrically connected to an external power supply.

3. The automotive brake drum outer cylindrical end face device according to claim 1, characterized in that: The auxiliary clamping assembly (46) includes a second slider (461), a second rack plate (462), a moving block (463), and a second clamping block (464). The second slider (461) is slidably connected to the outer end of the slide groove. The second rack plate (462) is located at the left end of the first slider (43). The second rack plate (462) is meshed with the right end of the outer surface of the gear (42). The moving block (463) is slidably connected to the inside of the second slider (461). The second clamping block (464) is located at the right end of the moving block (463).

4. The automotive brake drum outer cylindrical end face device according to claim 3, characterized in that: The auxiliary clamping assembly (46) also includes a lead screw (465) and a knob (466). The lead screw (465) is rotatably connected to the inside of the second slider (461). The outer surface of the lead screw (465) is threadedly connected to the inner surface of the laterally adjacent moving block (463). The knob (466) is located at the outer end of the lead screw (465).

5. The automotive brake drum outer cylindrical end face device according to claim 2, characterized in that: The clamping mechanism (4) also includes a motor (47), a conductive slip ring (48), and a contact head (49). The motor (47) is located in the middle of the left side inside the mounting shell (3). The right end of the output shaft of the motor (47) is fixedly connected to the middle of the left side of the external gear ring (41). The conductive slip ring (48) is located on the left side of the outer surface of the mounting shell (3). The contact head (49) is located in the middle of the front end of the left side wall of the cutting shell (1). The input end of the contact head (49) is electrically connected to the output end of the microcontroller (9). The output end of the conductive slip ring (48) is electrically connected to the input end of the motor (47).

6. The automotive brake drum outer end face device according to claim 2, characterized in that: It also includes a second motor (5), which is located on the left side inside the cutting shell (1). The input end of the second motor (5) is electrically connected to the output end of the microcontroller (9), and the right end of the output shaft of the second motor (5) is fixedly connected to the left end of the main shaft (2).

7. The automotive brake drum outer cylindrical end face device according to claim 2, characterized in that: It also includes a two-axis module (6), a tool holder (7) and a cutting tool (8). The two-axis module (6) is located in the middle of the bottom wall of the cutting shell (1). The input end of the two-axis module (6) is electrically connected to the output end of the microcontroller (9). The tool holder (7) is located at the upper end of the two-axis module (6), and the cutting tool (8) is located at the upper end of the tool holder (7).

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