Conventional Lathe Machine

Operating procedures

1. Inspection before startup

1.1 Add appropriate grease according to the machine lubrication chart.

1.2 Check all electrical facilities, handle, transmission parts, protection and limit devices are complete, reliable and flexible.

1.3 Each gear should be at zero position, and the belt tension should meet the requirements.

1.4 It is not allowed to store metal objects directly on the bed, so as not to damage the bed.

1.5 The workpiece to be processed is free of mud and sand, preventing mud and sand from falling into the machine and wearing out the guide rail.

1.6 Before the workpiece is clamped, an empty car test operation must be carried out, and the workpiece can be loaded only after confirming that everything is normal.

2. Operation procedure

2.1 After the workpiece is installed, start the lubricating oil pump first to make the oil pressure meet the requirements of the machine tool before starting.

2.2 When adjusting the exchange gear rack, when adjusting the hanging wheel, the power supply must be cut off. After the adjustment, all bolts must be tightened, the wrench should be removed in time, and the workpiece should be disconnected for trial operation.

2.3 After loading and unloading the workpiece, the chuck wrench and floating parts of the workpiece should be removed immediately.

2.4 The tailstock, crank handle, etc. of the machine tool shall be adjusted to appropriate positions according to the processing needs, and shall be tightened or clamped.

2.5 Workpieces, tools and fixtures must be securely mounted. The floating force tool must extend the lead-in part into the workpiece before starting the machine tool.

2.6 When using the center rest or the tool rest, the center must be adjusted well, and there must be good lubrication and supporting contact surfaces.

2.7 When processing long materials, the protruding part behind the main shaft should not be too long.

2.8 When feeding the knife, the knife should approach the work slowly to avoid collision; the speed of the carriage should be uniform. When changing the tool, the tool and the workpiece must be kept at an appropriate distance.

2.9 The cutting tool must be tightened, and the extension length of the turning tool is generally not more than 2.5 times the thickness of the tool.

2.1.0 When machining eccentric parts, there must be proper counterweight to balance the center of gravity of the chuck, and the speed of the vehicle should be appropriate.

2.1.1. There must be protective measures for the workpiece whose chuck is beyond the fuselage.

2.1.2 The adjustment of the tool setting must be slow. When the tool tip is 40-60 mm away from the processing part of the workpiece, manual or working feed should be used instead, and rapid feed is not allowed to directly engage the tool.

2.1.3 When polishing the workpiece with a file, the tool holder should be retracted to a safe position, and the operator should face the chuck, with the right hand in front and the left hand behind. There is a keyway on the surface, and it is forbidden to use a file to process the workpiece with a square hole.

2.1.4 When polishing the outer circle of the workpiece with emery cloth, the operator should hold the two ends of the emery cloth with both hands to polish according to the posture specified in the previous article. It is forbidden to use your fingers to hold the abrasive cloth to polish the inner hole.

2.1.5 During automatic knife feeding, the small knife holder should be adjusted to be flush with the base to prevent the base from touching the chuck.

2.1.6 When cutting large and heavy workpieces or materials, sufficient machining allowance should be reserved.

3. Parking operation

3.1 Cut off the power and remove the workpiece.

3.2 The handles of each part are knocked down to the zero position, and the tools are counted and cleaned.

3.3 Check the condition of each protection device.

4. Precautions during operation

4.1 It is strictly forbidden for non-workers to operate the machine.

4.2 It is strictly forbidden to touch the tool, the rotating part of the machine tool or the rotating workpiece during operation.

4.3 It is not allowed to use emergency stop. In case of emergency, after using this button to stop, it should be checked again according to the regulations before starting the machine tool.

4.4 It is not allowed to step on the guide rail surface, screw rod, polished rod, etc. of the lathe. Except for the regulations, it is not allowed to operate the handle with feet instead of hands.

4.5 For parts with blisters, shrinkage holes or keyways on the inner wall, triangular scrapers are not allowed to cut the inner holes.

4.6 The compressed air or liquid pressure of the pneumatic rear hydraulic chuck must reach the specified value before it can be used.

4.7 When turning slender workpieces, when the protruding length of the front two sides of the head of the bed is more than 4 times the diameter, the center should be used according to the process regulations. Center rest or heel rest support. Guards and warning signs should be added when protruding behind the head of the bed.

4.8 When cutting brittle metals or cutting easily splashed (including grinding), protective baffles should be added, and operators should wear protective glasses.