Precautions for the knife handle and knife holder

　　Tool holder and tool clampIn machining factories, CNC machining centers are mainly used for processing key parts such as mold cores, inserts, and copper sheets. The quality of the mold core and inserts directly determines the quality of the molded parts. Read the drawings and program lists, transfer the corresponding programs to the machine, check the program header, cutting parameters, etc., determine the processing dimensions and allowances of the workpiece, clamp the workpiece, accurately align the workpiece, establish the workpiece coordinates accurately, reasonably select the tool holder and tool clamp and cutting parameters, clamp the tool securely, safely test cutting methods, observe the processing process, and adjust cutting parameters.

For new molds of tool holders and tool clamps, the processing drawings should meet the requirements, and the data should be clear; the processing drawings for new molds should be signed by the supervisor, and the columns of the processing drawings should be filled out. The workpiece should have a qualified mark from the quality department. After receiving the program order, check whether the reference position of the workpiece is consistent with the reference position on the drawing. Carefully review each requirement in the program list and confirm whether the program is consistent with the drawing requirements. If there are issues, work with the programmer and production team to resolve them. Based on the material and size of the workpiece, assess the reasonableness of the programmer's choice of rough or light cutting tools. If the application of the tool is found to be unreasonable, immediately notify the programmer to make the necessary changes to improve processing efficiency and workpiece processing accuracy.

When clamping the workpiece, pay attention to the position of the code and the protruding length of the nuts and bolts on the pressure plate. When locking the angle, the screws should not move up and down. Copper is generally processed into locking plates, and before starting the machine, it should be compared with the quantity of cutting materials on the program list to ensure consistency. At the same time, check whether the screws of the locking plate are tightened. In the case of receiving multiple copper materials for sheet metal, check whether the direction during processing is correct and whether the copper materials interfere. When clamping the workpiece according to the drawing shape and workpiece size data in the program list, pay attention to the workpiece size data. Also, if there is a part drawing, check whether the graphics in the program list are consistent with the graphics in the part drawing, and pay attention to the direction of movement and the arrangement of the X and Y axes.

When clamping the workpiece, check whether the dimensions of the workpiece meet the size requirements of the program list. If there is a part drawing, check whether the dimensions in the program list are consistent with those in the part drawing. Before the workpiece is placed on the machine, clean the workbench and the bottom of the workpiece. Use an oil stone to remove burrs and damaged areas on the machine table and the surface of the workpiece. During coding, ensure that the code is not damaged, and communicate with the programmer if necessary. At the same time, if the bottom gasket is square, the code should be aligned with the gasket to achieve force balance. When using a vise to clamp, be sure to understand the depth of processing for the tool holder and tool clamp to prevent the clamping position from being too long or too short. When clamping, the handle should not be too short. Check whether the tool meets the requirements before each tool holder and tool clamp. The length of a single piece should be determined based on the processing depth indicated in the program list, and it should be slightly longer than the processing depth value by 2MM, considering whether the tool handle will collide.