What are the operating specifications of the die carving machine?

Standardized operation specification of knife die engraving machine

Knife die engraving machine is a high-speed CNC machining equipment, and its operation should follow the whole process standardization requirements of * * "Pre-job inspection → programming and debugging → clamping and machining → shutdown and finishing → daily maintenance" * * The core guarantees machining accuracy, equipment life and operation safety, and the specification covers the whole process of professional operation, which adapts to the daily production scene of knife die machining and is concise and can be put on the ground:

A, pre-job operation specification (must be done before starting, eliminate the source hidden trouble)

Personnel and protection: the operators shall be trained professionally and hold relevant certificates; Wear anti-impact goggles, anti-slip labor protection shoes, and put long hair into the working cap. It is forbidden to wear loose clothes, gloves/jewelry (rings and bracelets), and dust masks/masks are required for dust operations.

Comprehensive inspection of equipment

Check that the fuselage is firmly fixed, the guide rail and workbench are free of iron filings and sundries, and the oil level of the lubrication system is normal (guide rail oil and spindle oil meet the model requirements);

Confirm that there is no abnormal sound on the spindle and motor, the safety components such as emergency stop button, protective door and limit switch are in good condition and effective, and the cooling system (water cooling/air cooling) and dust collection system are operating normally;

Check that the tool chuck is clean and free from abrasion, cables and grounding lines are free from damage and virtual connection, and the numerical control system has no fault alarm.

Preparation of materials and tools: check the drawings and process requirements of machining tool dies, and prepare matching tools (no edge collapse and deformation, and the tool diameter/tool type is consistent with the machining requirements) and fixtures (pressure plates and fixtures); Plates to be processed (such as steel plate and acrylic) shall be placed in the designated area near the workbench without warping or damage.

2. Programming and debugging specifications (core before machining to ensure accurate trajectory)

Programming requirements: Write the machining program in the CNC system/off-line programming software according to the drawing of the cutter die, and make clear the rotation speed, feed speed, machining depth and tool path. Tool path planning needs to avoid tool blank cutting and tool collision; Save the backup after the program is written, and mark the cutter die number and processing parameters.

Idle running debugging: reset the workbench and spindle to zero, remove the tool, empty the workbench, and execute the machining program for idle running; Check that the tool path is consistent with the drawing, and there is no risk of overtravel and collision, and make sure that each axis runs smoothly and without jamming.

Trial cutting and debugging: after the no-load operation is correct, clamp the cutter and the trial cutting material (the same material as the workpiece), and reduce the processing parameters (the rotation speed and feed speed are adjusted to 50%~70% of the standard value) for trial cutting; After the trial cutting is completed, measure the size and accuracy, and then restore the standard parameters if they meet the requirements of the drawings. If they fail to meet the standards, adjust the procedures or tools.

Three, the clamping and machining operation specification (core process, ensure the accuracy and safety)

(a) the clamping specification

Workpiece clamping: place the plate to be processed in the center of the workbench, fix it evenly with pressure plates and fixtures, and press the four corners without looseness or warping, and a non-slip rubber pad can be placed between the workbench and the plate; After clamping, make sure that the plate is parallel to the workbench, and the processing area is unobstructed, so as to avoid the tool from touching the fixture when cutting.

Tool clamping: clean the tool chuck and handle, vertically load the tool into the chuck, with the clamping length ≥ 3 times of the tool diameter, and lock it with a special torque wrench according to the specified torque, and it is forbidden to loosen it by hand; Manually move the spindle after loading the cutter, and check that the cutter is free from shaking and interference with the workbench and plate.

(2) Processing operation specifications

Start-up confirmation: after the clamping is completed, close the protective door of the equipment, adjust the numerical control system to * * "automatic operation" * * mode, check the program number and machining parameters again, and start machining after confirmation.

Real-time monitoring: during machining, operators are not allowed to leave their posts without authorization, and closely observe the running state of the equipment: the spindle rotates smoothly without abnormal noise, the cutter cuts normally, the coolant/vacuum tube is aimed at the machining area, and the plate is not displaced or shaken; In case of abnormal sound, knife collapse, dimensional deviation, system alarm, etc., immediately press the emergency stop button, cut off the power supply after stopping, and then troubleshoot the fault. It is forbidden to run with fault.

Illegal operation is prohibited: it is forbidden to open the protective door, extend the hand/head into the processing area, and touch the rotating tools, workpieces and moving parts with hands during processing; It is forbidden to adjust the machining parameters without authorization and forcibly move each axis manually after suspension; It is forbidden to place irrelevant tools and materials on the workbench.

Midway operation: If it is necessary to suspend measurement and adjustment, first execute the * * "Spindle Stop" * * command, and then open the protective door for operation after the tool is completely stationary and reset; When replacing the tool, it is necessary to cut off the power first, clean the chuck and then re-clamp, and try to cut again to confirm the accuracy.

Four, stop and finish operation specification (must be done after the completion of processing, finished products and site management)

Standardizing shutdown: After the machining of the cutter die is completed, first execute * * "Spindle Reset" * * to make the spindle and workbench return to zero, and stop the spindle rotation, cooling system and dust collection system; Turn off the numerical control system again, and finally cut off the total power supply of the equipment. It is strictly forbidden to turn off the power directly.

Finished product treatment: open the protective door, take down the processed die with special tools, remove the surface iron chips and burrs, check the size and accuracy according to the drawings, mark it after it is qualified (die number and processing date), and send it to the designated area for storage; Non-conforming products are placed separately, marked with problem points, to be repaired.

On-site cleaning: use brushes and hooks to clean the iron filings and dust on the workbench, guide rail and spindle. It is strictly forbidden to grab them directly by hand or directly rinse the electrical cabinet, numerical control system and other precision parts with water. Wipe the surface of the equipment and keep the workbench and fuselage clean.

Tool homing: clean the tools such as tools, fixtures, measuring tools and wrenches, and put them in the designated tool box/rack. The tools shall be rusted (coated with antirust oil), and the chuck shall be reset after cleaning.

Record filling: fill in the equipment operation record form, and mark the number of machining tool die, machining time, tool usage and equipment operation state. If there is any fault or abnormality, record the problem point and treatment situation in detail.

Five, equipment daily maintenance and maintenance specification (prolong life, ensure long-term accuracy)

Daily maintenance: clean the guide rail, workbench and spindle chuck; Check the oil level of lubricating system, and add the same type of lubricating oil in time when it is insufficient; Check the coolant level, replace the turbid coolant and clean the cooling pipe; Operate the emergency stop button once to confirm that the reset is normal.

Weekly maintenance: add lubricating oil to guide rail and lead screw and wipe it clean; Check the tool wear and replace the tool with broken edge and excessive wear; Check whether the fixture and pressure plate are deformed or slippery, and replace the damaged parts in time; Clean the dust collection system filter to ensure the dust suction effect.

Monthly maintenance: check the running accuracy of the spindle, measure the runout, and calibrate it in time when it is out of tolerance; Check the sensitivity of limit switches and sensors on each axis; Tighten the fixing screws of the fuselage and workbench to prevent loosening; Dust the numerical control system and check that the cable connection is firm.

Long-term downtime maintenance: if the equipment is not used for more than 3 days, cut off the main power supply and apply antirust oil to the cutter, spindle chuck and workbench; Cover the equipment with a dust cover to prevent dust from entering; Drain the coolant to avoid deterioration and corrosion of the pipeline.

Six, illegal operation ban (strictly prohibited, put an end to accidents and precision loss)

It is forbidden to operate the equipment by unlicensed personnel, drunk/tired/sick personnel;

It is forbidden to process non-parametric materials (over-speed, over-feed, ultra-deep cutting), and it is forbidden to process non-standard materials with a die carving machine.

It is forbidden to dismantle or damage the safety protection components such as protective doors, limit switches and emergency stop buttons of the equipment;

It is forbidden to start machining when the clamping is not firm, and it is forbidden to press the workpiece by hand for cutting;

It is strictly forbidden to directly carry out formal processing without debugging or idling the program;

It is forbidden to overhaul the equipment and replace the tools with electricity, and it is forbidden to clean, measure and adjust the equipment during operation;

It is strictly forbidden to modify the parameters of CNC system and delete the processing program at will, and record and backup the parameters after modification;

Flammable, explosive and corrosive substances are strictly prohibited to be placed around the equipment, and smoking is strictly prohibited in the operation area.