Method for positioning a wheel by a special fixture for deburring an online aluminum alloy wheel

Abstract

The present invention discloses a special fixture for online deburring of aluminum alloy wheels, which is suitable for a robot to mill burrs on a special logistics roller path and fixture with a special rotating tool. This mechanism is composed of a roller path, a fixture body, a solenoid valve, and a triple unit. The cylinder drives the connecting plate and the V-wheel to clamp the wheel. The one-way bearing can effectively clamp and prevent the rotation of the wheel. The gear rack ensures the repeated positioning accuracy of clamping. The displacement sensor can verify the accuracy of pre-sequence identification. It is a newly designed mechanism with the advantages of convenient operation, high efficiency, and strong stability.

Description

Technical Field

[0001] The present invention relates to the field of machining, specifically to the field of automated machinery for machining aluminum alloy wheels. More specifically, it relates to a method for positioning a wheel using a special fixture for milling burrs on an aluminum alloy wheel in an online manner. Technical Background

[0002] With the continuous improvement of people's living standards, household cars have become necessities for most people. Aluminum alloy wheels have won the favor of more and more automobile manufacturers with their beautiful appearance, safety and comfort. Due to the light weight and high manufacturing precision of aluminum alloy wheels, they have small deformation and small inertial resistance when rotating at high speed. Aluminum alloy wheels have the metal characteristics of absorbing vibration and rebound force. After being processed by a numerical control machine tool, they have high dimensional accuracy, true roundness, small runout and good balance, making the vehicle run smoothly and comfortably.

[0003] After the machining of aluminum alloy wheels is completed, there are many burrs at the window position. The existing treatment methods are mostly manual removal, which consumes manpower, has low efficiency, and the removal effect is not ideal. For removing burrs at fixed workstations, a transfer robot is mostly required to cooperate with the hub handling, resulting in low efficiency and high cost. In order to improve production efficiency and reduce costs, there is an urgent need for a device and method for automatically clamping and positioning a wheel on a logistics roller path for a robot to mill burrs with a special rotating tool. Summary of the Invention

[0004] To solve the above technical problems, the present invention proposes a method for positioning a wheel using a special fixture for milling burrs on an aluminum alloy wheel in an online manner, which can effectively clamp and prevent the rotation of the wheel, ensure the repeat positioning accuracy, and verify the accuracy of the previous sequence identification, and has the advantages of convenient operation, high efficiency and strong stability.

[0005] The complete technical solution of the present invention includes:

[0006] A method for positioning a wheel using a special fixture for milling burrs on an aluminum alloy wheel in an online manner, wherein the special fixture for milling burrs on an aluminum alloy wheel in an online manner is composed of a roller path (1), a fixture body (2), a solenoid valve (3), and a triple unit (4);

[0007] The triple unit (4) is connected to a gas source and is connected to a cylinder (206) through the solenoid valve (3);

[0008] The jig body (2) is composed of an aluminum chip baffle A (201), an aluminum chip baffle B (202), an aluminum chip baffle C (203), a connecting plate (204), a slider (205), a cylinder (206), a linear guide rail (207), a roller bearing with a shaft (208), a floating joint (209), a cylinder connecting plate (210), a one-way bearing (211), a V-wheel (212), a V-wheel seat (213), a sensor connecting shaft (214), a ball eye joint (215), a displacement sensor (216), a shaft (217), a ball bearing (218), a gear (219), a rack (220), a support column (221), an aluminum chip baffle D (222), a base (223) and a material receiving hopper (224);

[0009] The aluminum chip baffle A (201), the aluminum chip baffle B (202) and the aluminum chip baffle C (203) are fixed on the base (223) through the support column (221). The cylinder (206), the linear guide rail (207), the roller bearing with a shaft (208), the displacement sensor (216) and the shaft (217) are connected to the base (223). The slider (205), the cylinder connecting plate (210), the V-wheel seat (213) and the rack (220) are respectively connected to the connecting plate (204) by screws. The slider (205) is placed on the linear guide rail (207). The cylinder rod of the cylinder (206) is connected to the cylinder connecting plate (210) through the floating joint (209). The one-way bearing (211) is placed inside the V-wheel (212) and connected to the V-wheel seat (213). The pull rod of the displacement sensor (216) is connected to the cylinder connecting plate (210) through the ball eye joint (215) and the sensor connecting shaft (214). The gear (219) is installed on the shaft (217) through the ball bearing (218). The gear (219) meshes with the rack (220). The material receiving hopper (224) is placed at the inner bottom of the base (223). The base (223) is fixed to the bottom surface through expansion bolts. The aluminum chip baffle D (222) is fixed on the base (223) and located on both sides of the gear (219) and the rack (220);

[0010] The specific positioning method is as follows: The roller path (1) conveys the wheel into the fixture range. When the photoelectric switch detects the wheel, the roller path (1) stops rotating. After the air source is processed by the air treatment unit (4), it is conveyed to the cavity of the air cylinder (206) by the solenoid valve (3). The piston rod of the air cylinder (206) drives the connecting plate (204) and the V-wheel (212) fixed thereon through the floating joint (209) and the air cylinder connecting plate (210) to clamp the wheel. The one-way bearing (211) built into the V-wheel (212) enables the wheel to move towards the center direction when being clamped, ensuring that the wheel does not rotate during the milling process. The slider (205) and the linear guide (207) ensure the precise linear movement positioning of the connecting plate (204) and the V-wheel (212). The gears (219) and the racks (220) ensure the synchronous movement of the connecting plates (204) on both sides. The rod of the displacement sensor (216) is connected to the connecting plate (204) through the ball eye joint (215), the sensor connecting shaft (214) and the air cylinder connecting plate (210). Through program calculation, the wheel diameter is detected to calibrate the accuracy of the wheel profile recognized by the previous vision system. The aluminum chips generated during milling are guided by the aluminum chip baffle A (201), the aluminum chip baffle B (202), and the aluminum chip baffle C (203) and finally fall into the material receiving hopper (224). The aluminum chip baffle D (222) can effectively prevent the aluminum chips from falling onto the gears (219) and the racks (220), preventing jamming during the meshing process. After the wheel is processed, the air cylinder (206) drives the connecting plate (204) and the V-wheel (212) and the V-wheel seat (213) connected thereto to loosen the wheel, and the roller path (1) conveys the wheel out of the processing station and enters the next processing cycle.

[0011] The advantages of the present invention over the prior art are as follows:

[0012] 1. In terms of structural design, the one-way bearing (211) built into the V-wheel (212) of the present invention enables the wheel to move towards the center direction when being clamped, ensuring that the wheel does not rotate during the milling process. The one-way bearing can effectively clamp and prevent the rotation of the wheel.

[0013] 2. The gears and racks ensure the synchronous movement of the connecting plates (204) on both sides, ensuring the repeat positioning accuracy of clamping.

[0014] 3. The displacement sensor and program calculation detect the wheel diameter, which can ensure the accuracy of calibrating the wheel profile recognized by the previous vision system and can verify the accuracy of the previous recognition.

[0015] 4. The present invention is designed for deburring the window of the aluminum wheel. The overall structure is reasonable, the operation is simple, the positioning is accurate, effectively saving labor costs, reducing labor intensity, and improving the degree of automation, with the advantages of convenient operation, high efficiency, and strong stability. Description of the Drawings

[0016] Figure 1 This is a schematic diagram of a special fixture for milling burrs of online aluminum alloy wheels in the present invention.

[0017] Figure 2 This is a schematic diagram of the fixture body of a special fixture for milling burrs of online aluminum alloy wheels in the present invention.

[0018] Figure 3 This is another schematic diagram of the fixture body of a special fixture for milling burrs of online aluminum alloy wheels in the present invention.

[0019] In the figure: 1 - raceway, 2 - fixture body, 3 - solenoid valve, 4 - triple unit, 201 - aluminum chip baffle A, 202 - aluminum chip baffle B, 203 - aluminum chip baffle C, 204 - connecting plate, 205 - slider, 206 - cylinder, 207 - linear guide rail, 208 - roller bearing with shaft, 209 - floating joint, 210 - cylinder connecting plate, 211 - one-way bearing, 212 - V - wheel, 213 - V - wheel seat, 214 - sensor connecting shaft, 215 - ball eye joint, 216 - displacement sensor, 217 - shaft, 218 - ball bearing, 219 - gear, 220 - rack, 221 - support column, 222 - aluminum chip baffle D, 223 - base, 224 - material receiving hopper. Specific embodiments

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] As Figures 1-3 shown, a method for wheel positioning using a special fixture for milling burrs of online aluminum alloy wheels, the special fixture for milling burrs of online aluminum alloy wheels is composed of a roller path 1, a fixture body 2, a solenoid valve 3, and a triple unit 4;

[0022] The triple unit 4 is connected to the air source and connected to the cylinder 206 through the solenoid valve 3;

[0023] The fixture body 2 is composed of an aluminum chip baffle A 201, an aluminum chip baffle B 202, an aluminum chip baffle C 203, a connecting plate 204, a slider 205, a cylinder 206, a linear guide rail 207, a roller bearing with shaft 208, a floating joint 209, a cylinder connecting plate 210, a one - way bearing 211, a V - wheel 212, a V - wheel seat 213, a sensor connecting shaft 214, a ball eye joint 215, a displacement sensor 216, a shaft 217, a ball bearing 218, a gear 219, a rack 220, a support column 221, an aluminum chip baffle D 222, a base 223, and a material receiving hopper 224;

[0024] The aluminum chip baffle A201, aluminum chip baffle B202, and aluminum chip baffle C203 are fixed on the base 223 through the support columns 221. The cylinder 206, linear guide 207, shafted roller bearing 208, displacement sensor 216, and shaft 217 are connected to the base 223. The slider 205, cylinder connecting plate 210, V-wheel seat 213, and rack 220 are respectively connected to the connecting plate 204 by screws. The slider 205 is placed on the linear guide 207. The cylinder rod of the cylinder 206 is connected to the cylinder connecting plate 210 through the floating joint 209. The one-way bearing 211 is placed inside the V-wheel 212 and connected to the V-wheel seat 213. The pull rod of the displacement sensor 216 is connected to the cylinder connecting plate 210 through the ball eye joint 215 and the sensor connecting shaft 214. The gear 219 is installed on the shaft 217 through the ball bearing 218. The gear 219 meshes with the rack 220. The material receiving hopper 224 is placed at the inner bottom of the base 223. The base 223 is fixed to the bottom surface by expansion bolts. The aluminum chip baffle D222 is fixed on the base 223 and located on both sides of the gear 219 and the rack 220.

[0025] During operation, the roller conveyor 1 transports the wheel into the fixture range. When the photoelectric switch detects the wheel, the roller conveyor 1 stops rotating. After the air source is processed by the air treatment unit 4, it is delivered to the cavity of the cylinder 206 by the solenoid valve 3. The cylinder rod of the cylinder 206 drives the connecting plate 204 and the V-wheel 212 fixed thereon through the floating joint 209 and the cylinder connecting plate 210 to clamp the wheel. The one-way bearing 211 built into the V-wheel 212 enables the wheel to move towards the center direction when clamped, ensuring that the wheel does not rotate during the milling process. The slider 205 and the linear guide 207 ensure the precise linear movement of the connecting plate 204 and the V-wheel 212. The gear 219 and the rack 220 ensure the synchronous movement of the connecting plates 204 on both sides. The pull rod of the displacement sensor 216 is connected to the connecting plate 204 through the ball eye joint 215, the sensor connecting shaft 214, and the cylinder connecting plate 210. By program calculation, the diameter of the wheel is detected to calibrate the accuracy of the wheel profile recognized by the previous vision system. The aluminum chips generated during milling are guided by the aluminum chip baffle A201, aluminum chip baffle B202, and aluminum chip baffle C203 and finally fall into the material receiving hopper 224. The aluminum chip baffle D222 can effectively prevent the aluminum chips from falling onto the gear 219 and the rack 220, preventing jamming during the meshing process. After the wheel is processed, the cylinder 206 drives the connecting plate 204 and the V-wheel 212 and V-wheel seat 213 connected thereto to release the wheel. The roller conveyor 1 transports the wheel out of the processing station and enters the next processing cycle.

[0026] In summary, the present invention uses a robot to deburr the clamped wheel window, completing the work with high quality and high efficiency, greatly reducing the labor cost and labor intensity.

Claims

1. A method for positioning a wheel by a special fixture for milling burrs of an online aluminum alloy wheel, characterized in that: The special fixture for online deburring of aluminum alloy wheels consists of a roller path (1), a fixture body (2), a solenoid valve (3), and a triple unit (4). The triple unit (4) is connected to the air source and connected to the cylinder (206) through the solenoid valve (3). The fixture body (2) is composed of an aluminum chip baffle A (201), an aluminum chip baffle B (202), an aluminum chip baffle C (203), a connecting plate (204), a slider (205), a cylinder (206), a linear guide rail (207), a roller bearing with a shaft (208), a floating joint (209), a cylinder connecting plate (210), a one-way bearing (211), a V-wheel (212), a V-wheel seat (213), a sensor connecting shaft (214), a ball eye joint (215), a displacement sensor (216), a shaft (217), a ball bearing (218), a gear (219), a rack (220), a support column (221), an aluminum chip baffle D (222), a base (223), and a material receiving hopper (224). The aluminum chip baffle A (201), the aluminum chip baffle B (202), and the aluminum chip baffle C (203) are fixed on the base (223) through the support column (221). The cylinder (206), the linear guide rail (207), the roller bearing with a shaft (208), the displacement sensor (216), and the shaft (217) are connected to the base (223). The slider (205), the cylinder connecting plate (210), the V-wheel seat (213), and the rack (220) are respectively connected to the connecting plate (204) by screws. The slider (205) is placed on the linear guide rail (207). The cylinder rod of the cylinder (206) is connected to the cylinder connecting plate (210) through the floating joint (209). The one-way bearing (211) is placed inside the V-wheel (212) and connected to the V-wheel seat (213). The pull rod of the displacement sensor (216) is connected to the cylinder connecting plate (210) through the ball eye joint (215) and the sensor connecting shaft (214). The gear (219) is installed on the shaft (217) through the ball bearing (218). The gear (219) meshes with the rack (220). The material receiving hopper (224) is placed at the inner bottom of the base (223). The base (223) is fixed to the bottom surface through expansion bolts. The aluminum chip baffle D (222) is fixed on the base (223) and located on both sides of the gear (219) and the rack (220). The specific positioning method is as follows: The roller table (1) conveys the wheel into the fixture range. When the photoelectric switch detects the wheel, the roller table (1) stops rotating. After the air source is processed by the air treatment unit (4), it is conveyed to the cavity of the air cylinder (206) by the solenoid valve (3). The piston rod of the air cylinder (206) drives the connecting plate (204) and the V-wheel (212) fixed thereon through the floating joint (209) and the air cylinder connecting plate (210) to clamp the wheel. The one-way bearing (211) built into the V-wheel (212) enables the wheel to move towards the center when clamped, ensuring that the wheel does not rotate during the milling process. The slider (205) and the linear guide rail (207) ensure the precise linear movement positioning of the connecting plate (204) and the V-wheel (212). The gears (219) and the racks (220) ensure the synchronous movement of the connecting plates (204) on both sides. The pull rod of the displacement sensor (216) is connected to the connecting plate (204) through the ball eye joint (215), the sensor connecting shaft (214), and the air cylinder connecting plate (210). By program calculation, the wheel diameter is detected to calibrate the accuracy of the wheel profile recognized by the previous vision system. The aluminum chips generated during milling are guided by the aluminum chip baffle A (201), the aluminum chip baffle B (202), and the aluminum chip baffle C (203) and finally fall into the material receiving hopper (224). The aluminum chip baffle D (222) can effectively prevent the aluminum chips from falling onto the gears (219) and the racks (220), preventing jamming during the meshing process. After the wheel is processed, the air cylinder (206) drives the connecting plate (204) and the V-wheel (212) and the V-wheel seat (213) connected thereto to loosen the wheel. The roller table (1) conveys the wheel out of the processing station and enters the next processing cycle.

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