The clamping and cutter head of the automatic double-head chamfering machine have been carefully designed to ensure the accuracy of the center line of the workpiece and the cutter head.
The seamless steel pipe’s outer corners, inner corners, and end faces can be uniformly processed in a single pass, guaranteeing precise processing dimensions.
The use of automatic feeding through the vibrating plate greatly enhances production efficiency and reduces the need for manpower.
Processing Principle
Working process of double-head chamfering machine
The double-head chamfering machine consists of a material hopper, an alignment roller, a discharge mechanism, an active mechanism, a steel pick hook, a collecting groove, a grinding head machine, an alignment positioning plate, and a pressing device.
The machine is suspended from the chamfered double head on the bulk cloth table.
The stopper on the oblique track blocks the double head.
The automatic chamfering machine moves the double heads one by one into the alignment roller path.
The roller table aligns the double end with the chamfer end.
The double-head chamfering machine slides down the diagonal track, aligns the positioning plates, and enters the friction wheel of the main drive.
The hold-up device lifts the workpiece against it.
The main drive shaft starts rotating the workpiece and feeds it into the grinder to start chamfering.
After the chamfering is finished, the pressing device is dropped.
The steel hooks support the workpiece on the inclined track, and another set of the material distributor divides the two ends into the next set of alignment rollers and goes in the opposite direction.
The next automatic chamfering machine chamfers the other end.
The last set of steel pick hooks feeds the finished product into the collection tank.
Equipment Principle
The double-head chamfering machine uses frictional force between the rubber wheel and the pressure roller to rotate and position the workpiece, and also adjust the frictional moment.
The main focus of this design is on chamfering using a grinding wheel.
The main drive mechanism comprises a drive axle and an idle axle.
A set of styrene-butadiene rubber wheels are embedded respectively in the driving axle and the idle axle, with the double head placed between them. When the driving wheel rotates, the double head twists due to the friction between the rubber wheel and the workpiece.
Hot-rolled steel typically has varying degrees of bending, which can cause the workpiece to become stuck between the two wheels and reduce the friction torque by jumping off the rubber wheel.
To prevent this, the input end of the driving axle is fixed during design, and the two rubber wheels of the two shafts at the grinding end are also fixed. All the rubber wheels of the two shafts can float up and down and move left and right to complete the entire working process of the double-head chamfering machine.
Equipment Safe Operation
Daily Operation Schedule for Automatic Chamfering Machine and Double Chamfering Machine
Preparation and Checking Before Daily Work
Before beginning daily operations, perform the following checks:
- Check the automatic chamfering machine every day, paying special attention to the environment surrounding the body of the double-head chamfering machine.
- Ensure that the tools in the toolbox are complete.
- Check the air source, power supply, and each button switch, indicator light, and electric eye sensor of the double-head chamfering machine to ensure that they are functioning correctly. Verify that the brakes are sensitive.
- Check whether the automatic chamfering oil pump or paraffin oil pump is working correctly, and verify that the oil nozzle is injecting oil. Ensure that the equipment is running normally.
- Check whether the shrinkage mold and the flanging mold are loose. If there is any looseness, make adjustments immediately.
Production Process Control
After turning on the automatic chamfering machine and the double-head chamfering machine, immediately measure the height of the can and the size of the flange to check if the length of the reduced diameter is uniform.
At all times, check the can body for signs of explosion, false welding, high and low cans, flanging film peeling, weld leakage, drying, and blistering. If any issues arise, shut down the machine immediately and alert the welder to make necessary adjustments.
During the production of the automatic chamfering machine, regularly check the lubrication injection to ensure adequate oil levels and prevent serious paraffin oil pollution in the tank.
Maintain constant attention to the cooperation between front and back processes and observe the equipment’s operations for abnormalities. If any issues arise, stop the machine immediately and have technicians perform relevant processing.
When stopping the double-head chamfering machine, ensure all molds are cleaned to prevent the deterioration of product quality.
When using the card, strictly avoid removing a bad tank from the equipment by hand or using related tools to prevent personal injury.
After maintenance and adjustment of the equipment, ensure tool parts are properly placed, production is resumed, and the quality of products is continuously checked. Make maintenance and downtime records.
During equipment repairs, non-related personnel are strictly forbidden from pressing any buttons. When the equipment is in operation, leaving the company without authorization is not allowed to ensure production safety.
Development
With the rapid development of steel companies, automatic chamfering machines have also made significant progress.
During the production of large round steel bar products, the automatic chamfering machine can be affected by the fixed-segment sawing process and cold bed collection. This can lead to flash, burrs, and swollen heads at the end of the bar, which can seriously limit the improvement of product surface quality.
Furthermore, the bar deep processing units and users have put forward higher and stricter requirements for surface and packaging quality due to the development of the market economy.
Therefore, many companies have implemented various measures in the bar finishing process, such as manual hand grinder grinding, fixed grinder grinding, and machining lathe cutting. However, these methods have their own issues:
(1) The operating rate is low and cannot effectively match the production rhythm, causing backlog and poor logistics.
(2) The quality of finishing cannot be guaranteed, especially with artificial grinding wheel grinding, where it is difficult to remove the swollen head at the end of the bar completely.
(3) The finishing process is labor-intensive, and the working environment is poor.
(4) When using the fixed grinder grinding method and the machining lathe cutting method, the bar’s unevenness during production may cause difficulty in the whole rotary feed when the bar is finished. This periodic oscillation at the end of the bar can lead to significant impact on the grinding wheel and cutting insert, causing cracks and safety hazards.
