1. The workpiece is over cut:
Reason：
1, a projectile, the tool strength is not too long or too small. The tool is caused by the tool.
2, the operator is not operating properly.
3, the cutting margin is not uniform. (for example, the side of the surface is 0.5, the bottom is 0.15).
4, the cutting parameters are improper (for example, the tolerance is too large, the SF setting is too fast, etc.).
Improve：
1, the principle of using the knife: can be big, can be short.
2, adding the clear angle program, the allowance is kept uniform as far as possible, (the side and the bottom margin remain the same).
3, the cutting parameters are adjusted reasonably and the remainder is round at the corner.
4, using the SF function of the machine tool, the speed of the operator’s micro adjustment makes the machine tool cutting the best effect.
In two.
Reason：
1, the operator is inaccurate with manual operation, and the number of manual exercises is incorrect.
2, there is a burr around the mold.
3, the rod has magnetic.
4, the four sides of the mold are not vertical.
Improve：
1, the manual operation should be carefully checked and divided into the same point at the same point as far as possible.
2, around the edge of the mold using an oilstone or file in rags to clean deburring, and finally hand confirmation.
3, degaussing is first demagnetizing in the middle of the mold division, (can be used in ceramic bar or other).
4, the calibration table checks the four sides of the die vertical, (the verticality error needs to be reviewed with the fitter).
Three.
Reason：
1, the operator is inaccurate with manual operation, and the number of manual exercises is incorrect.
2, the tool clamp is mistaken.
3, the blade of the flying knife is mistaken, (the flying knife itself has a certain error).
4, there is an error between the R knife and the flat bottom knife and the flying knife.
Improve：
1, the manual operation should be repeated carefully, and the knife should be at the same point as far as possible.
2, the tool clamping with air guns blown clean or clean rags.
3, the blade of the flying knife should be measured, and a blade can be used in the light bottom.
4, a single program is produced separately, which can avoid the error between the flying knives of the R knife.
5, it is suggested that the German BLUM tool is used, and the tool can be completed automatically.
Four. Crashing – Programming:
Reason：
1, the safety height is not enough or not set (fast feed G00 when the knife or chuck hits the workpiece).
2, the tool on the program and the actual program tool are miswritten.
3, the tool length (blade length) on the program and the depth of the actual machining are miswritten.
4, the number of deep Z axis and the number of actual Z axis are miswritten on the program.
5, when programming, the coordinates are set wrong.
Improve：
1, accurate measurement of the height of the workpiece also ensures that the safety height is above the workpiece.
2, the tool on the program list should be consistent with the actual program tool (as far as possible with the automatic program sheet or the picture out of the program).
3, measure the depth of the workpiece on the workpiece, write the length and length of the tool on the program list (the tool clip length is higher than the workpiece 2-3MM, and the blade length is 0.5-1.0MM).
4, the number of actual Z axis on the work piece, write clearly on the program list. (this operation is generally manual operation to check repeatedly).
Five. Collider – Operator:
Reason：
1, the depth Z axis is wrong with the knife.
2, the number of points in the middle and the error of the number of exercises (such as the single edge number without the radius of the knife etc.).
3, use the wrong knife (for example: the D4 knife is processed with a D10 knife).
4, the program is wrong (such as: A7.NC is A9.NC).
5, hand wheel rocking in the wrong direction when manual operation.
6, the direction of the manual fast feed is in the wrong direction (for example, -X by +X).
Improve：
1, the depth Z axis to the knife must pay attention to the position of the knife. (bottom, top surface, analysis surface, etc.).
2, the number of points and the number of exercises should be checked again and again.
3, when the cutting tool is installed, it should be checked and checked repeatedly with the program and program.
4, the program should follow the order of one one.
5, in manual operation, the operator himself should strengthen the operation proficiency of the machine tool.
6, when moving quickly, the Z axis can be moved up to the workpiece.
Six. Surface precision:
Reason：
1, the cutting parameters are unreasonable, the surface of the workpiece is rough.
2, the cutting edge of the cutter is not sharp.
3, the cutting tool is too long, and the blade is too long to avoid.
4, chip, blow, oil bad.
5, programming tool way, (can consider walking as far as possible).
6, the workpiece has spines.
7, it is suggested that the Japanese MST hot pack handle should be used to improve the processing precision.
Improve：
1, cutting parameters, tolerances, remainder, speed feed setting should be reasonable.
2, the cutter requires the operator to check unregularly and replace it regularly.
3, when clamping the cutter, the operator must be as short as possible, and the blade should not be too long.
4, for the flat knife, R knife, round nose knife cutting, the speed feed setting should be reasonable.
5, the workpiece has burr: the root of our machine tools, cutting tools, cutting tools have a direct relationship. So we want to understand the performance of machine tools, the burr edge of the knife.