CN-122008014-A - Automatic equipment of polishing of wheel rim

Abstract

The invention relates to the technical field of wheel rim polishing, in particular to automatic wheel rim polishing equipment which comprises a machine tool, a conveying mechanism, a positioning mechanism, a polishing mechanism and a detection mechanism, wherein the conveying mechanism is used for conveying a wheel rim into and out of a polishing station of the machine tool, the positioning mechanism is used for aligning and positioning the rim of the wheel rim and fixing the wheel rim on the polishing station by applying a vertical pressing force, the polishing mechanism is used for polishing the surface of the fixed wheel rim, the detection mechanism is used for adjusting the cutting angle between the polishing surface of a polishing head and the surface of the wheel rim according to the variation of vibration frequency, the control mechanism is used for adjusting the orientation of the cutting angle according to the vibration displacement direction, adjusting the feeding depth of the polishing head according to the average flanging angle difference, and controlling the polishing head to retreat under the condition that the advancing resistance of a polishing motor is larger than the advancing pushing force. The invention realizes the improvement of polishing efficiency and polishing precision.

Inventors

• Wang Fanhu
• JIANG LEI
• YANG ZHAOBIN
• ZHANG HUI

Assignees

• 山东奥冠自动化设备有限公司

Dates

Publication Date

20260512

Application Date

20260327

Claims (10)

1. 1. Automatic equipment of polishing of wheel rim, characterized in that includes the lathe, still includes: a conveying mechanism connected with the machine tool and used for conveying the wheel rim into and out of a polishing station of the machine tool; the positioning mechanism is arranged above the conveying mechanism and used for aligning and positioning the rim of the wheel rim and fixing the wheel rim on the polishing station by applying a pressing force in the vertical direction; The polishing mechanism is connected with the positioning mechanism and used for polishing the surface of the fixed wheel rim, and comprises a sliding rail arranged on the upper surface of the machine tool, a polishing head arranged above the sliding rail and a polishing motor connected with the polishing head and used for applying a feeding force to the polishing head; the detection mechanism is connected with the positioning mechanism and is used for detecting the vibration frequency, the vibration displacement direction and the average flanging angle difference of the wheel rim; The control mechanism is respectively connected with the conveying mechanism, the positioning mechanism and the polishing mechanism, and is used for adjusting the cutting angle of the polishing surface of the polishing head and the surface of the wheel rim according to the variation of the vibration frequency, adjusting the orientation of the cutting angle according to the vibration displacement direction, adjusting the feeding depth of the polishing head according to the average flanging angle difference, adjusting the moving speed of the polishing head according to the feeding depth, and controlling the polishing head to retreat under the condition that the advancing resistance of the polishing motor is larger than the advancing pushing force.
2. 2. The automated wheel rim grinding apparatus of claim 1, wherein the conveying mechanism comprises: a top plate connected to the machine tool for carrying a wheel rim; and the pneumatic jacking machine is connected with the top plate and is used for adjusting the angle between the top plate and the horizontal plane by lifting the top plate.
3. 3. The automated wheel rim grinding apparatus of claim 2, wherein the positioning mechanism comprises: The movable base is arranged above the top plate and connected with the top plate, and is used for feeding and retracting the wheel rim; A plurality of alignment rollers connected with the movable base for applying clamping force to the end face of the rim of the wheel And the material pressing arm is arranged above the alignment roller and is used for applying a vertical downward pressing force to the wheel rim.
4. 4. The automated wheel rim grinding apparatus of claim 3, wherein the detection mechanism comprises: A first vision sensor connected to the machine tool for detecting a vibration frequency of the rim of the wheel and the vibration displacement direction; And the second visual sensor is arranged above the first visual sensor and is used for detecting the flanging angle of the wheel rim.
5. 5. The automated wheel rim and rim polishing apparatus according to claim 4, wherein the control mechanism is respectively connected to the first vision sensor and the polishing head, and is configured to obtain a variation of the vibration frequency in a unit detection period, and if the variation is greater than or equal to a preset variation, to increase a cutting angle between a polishing surface of the polishing head and a surface of the wheel rim.
6. 6. The automatic grinding apparatus for wheel rims and rims according to claim 5, wherein the variation amount of the vibration frequency is an absolute value of a difference between the vibration frequency detected at the end time of the unit detection period and the vibration frequency detected at the start time of the unit detection period.
7. 7. The automated wheel rim grinding apparatus of claim 6, wherein the control mechanism is respectively coupled to the first vision sensor, the pneumatic jack, and the grinding head for acquiring the vibration displacement direction under the condition that the variation is greater than or equal to the preset variation, If the included angle between the vibration displacement direction and the horizontal direction is smaller than a preset included angle, increasing the moving distance of the polishing head on the sliding rail to adjust the orientation of the cutting angle to be horizontal; If the included angle between the vibration displacement direction and the vertical direction is smaller than or equal to the preset included angle, increasing the jacking distance of the pneumatic jack to adjust the direction of the chamfer to be vertical.
8. 8. The automated wheel rim grinding apparatus of claim 7, wherein the control mechanism is coupled to the second vision sensor to obtain the flange angle and calculate the average flange angle difference for the wheel rim for the unit detection period, and if the average flange angle difference is greater than or equal to a preset angle difference, increase the feed depth of the grinding head.
9. 9. The automated wheel rim grinding apparatus of claim 8, wherein the control mechanism is coupled to the grinding motor to obtain the feed depth under the condition that the average flanging angle difference is greater than or equal to a preset angle difference, and to reduce the movement speed of the grinding head if the feed depth is greater than or equal to a preset depth.
10. 10. The automated wheel rim grinding apparatus of claim 9, wherein the feed depth is a distance the grinding head advances into the wheel rim in a direction perpendicular to the wheel rim surface.

Description

Automatic equipment of polishing of wheel rim Technical Field The invention relates to the technical field of wheel rim polishing, in particular to automatic wheel rim polishing equipment. Background In the prior art, automatic control and path planning are realized by adopting a PLC (programmable logic controller) or CNC (computer numerical control) system, the outline and the abrasion area of the rim of the wheel are identified by combining machine vision, an accurate polishing path is generated, part of equipment is carried with a six-axis industrial robot or a cooperative robot, a polishing head is mostly designed by adopting multi-axis linkage and is provided with a diamond or Cubic Boron Nitride (CBN) grinding wheel to improve the abrasion resistance, feed quantity control is realized by driving a servo motor, the abrasion quantity, outline deviation and other parameters of the rim of the wheel are measured in real time by utilizing a laser sensor, an eddy current sensor or a 3D laser scanner, and after data are transmitted to a control system, polishing parameters are adjusted. CN114434249a discloses an automatic grinding device for wheel rim welding points, which comprises a conveying frame for conveying wheel rim blanks and an automatic grinding machine arranged on one side of the conveying frame, wherein the automatic grinding machine comprises a frame and a telescopic grinding motor arranged on the frame, the power end of the telescopic grinding motor is arranged towards the conveying frame, the power end of the telescopic grinding motor is connected with an extraction rod, the top of the extraction rod is arranged in an arc surface, two telescopic grinding motors arranged at intervals are arranged on the frame, a workbench is arranged below the telescopic grinding motor, two bottom working rods arranged at intervals are arranged on the workbench, the bottom working rods are arranged on the workbench in an inclined L shape, the bottom surfaces of the bottom working rods are arranged in an arc shape, clamping blocks are arranged below the bottom working rods, the tops of the clamping blocks are arranged in an arc surface, the lifting of the clamping blocks are arranged on the workbench, slag pushing mechanisms for pushing away the welding joints on the wheel rims, and the two sides of the clamping blocks are provided with auxiliary welding wheels. The auxiliary wheel lift sets up on the workstation, still be provided with the grinding machanism that is used for polishing wheel rim blank circle welding seam in the frame, the grinding machanism upset sets up between two flexible motors of polishing, still be provided with drive wheel rim blank circle pivoted drive wheel in the frame, be provided with the turning rod in the frame, the turning rod upset sets up in the frame, the turning rod is provided with driving motor, driving motor's power end is connected with the drive wheel, the welding slag pushes away the motor of polishing including being provided with on the workstation, driving motor's power end is connected with the fixing base, be provided with on the fixing base and push away clean jar, push away clean jar's power end and be connected with and push away clean piece, the one end of fixing base is provided with the leading truck, the leading truck is the U font setting, the propulsion piece slides and sets up the upper and lower both ends at the leading truck, grinding machanism is including the last pole and the lower pole that polish, go up pole and lower pole all upset setting up in the frame, go up the motor and lower motor is provided with the motor of polishing, the power end that polishes is provided with the abrasive disc. Therefore, in the rim flanging process of the roll-forming process, the edge position of the wheel rim is inconsistent with the linear speed of the upper die and the lower die, so that burrs are generated due to relative friction, and the problem that the quantity of difference of the flanging angles of the rim is increased due to the fact that vibration is aggravated along with the polishing process due to unstable contact pressure between the burrs and the positioning elements is solved. Disclosure of Invention Therefore, the invention provides automatic polishing equipment for the rim of the wheel rim, which is used for solving the problems that in the rim flanging process of the roll-forming process in the prior art, the edge position of the wheel rim is inconsistent with the linear speed of an upper die and a lower die, so that burrs are generated due to relative friction, and the vibration is aggravated along with the polishing process due to unstable contact pressure between the burrs and a positioning element, so that the difference of flanging angles of the rim is increased. In order to achieve the above object, the present invention provides an automatic polishing device for a rim of a wheel rim, comprising a machine tool, and further comprising: a con