Device and method for manufacturing integrated rotary cutting tool

Abstract

The invention relates to the field of workpiece grinding, in particular to the technical field of microbits for PCB machining, and discloses a device and method for manufacturing an integrated rotary cutting tool. The device for manufacturing the integrated rotary cutting tool comprises a workpiece transfer device, a machine body, a feeding device, a grinding device and a discharging device. The grinding device comprises a coarse grinding device body used for carrying out primary grinding on vertically-arranged workpieces and a fine grinding device body used for carrying out secondary grinding on the vertically-arranged workpieces. The device for manufacturing the integrated rotary cutting tool is adopted in the method for manufacturing the rotary cutting tool. According to the device and method for manufacturing the integrated rotary cutting tool, the device is compact in structure, high in machining efficiency and precision and low in cost, the maximum value, the minimum value and the average value of the roundness of the microbits and the maximum value, the minimum value and the average value of the concentricity of the microbits are closer to the standard values, the capability index of the roundness in the stabilization process can be 2.0242, the capability index of the concentricity in the stabilization process can be 2.6657, and the machining precision is remarkably improved.

Description

technical field [0001] The invention belongs to the field of workpiece grinding, and in particular relates to an integrated rotary cutting tool manufacturing equipment and a manufacturing method. Background technique [0002] Generally, the grinding of cylindrical workpieces, such as the grinding of micro drills, generally adopts the integrated processing equipment for rough and fine grinding of horizontal clamping workpieces, that is, the workpieces are placed horizontally and ground, and elastic chucks are used to clamp the workpieces. The workpiece is driven to rotate, and then the clamping method is positioned by the V-shaped block; the grinding wheel is fed in the axial direction of the workpiece; the rough grinding wheel and the fine grinding wheel are used to grind the adjacent parts of the workpiece edge at the same time; however, this The elastic collet and the V-shaped block will act on the handle of the workpiece at the same time, forming over-positioning. When th...

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Problems solved by technology

[0002] Generally, the grinding of cylindrical workpieces, such as the grinding of micro drills, generally adopts the integrated processing equipment for rough and fine grinding of horizontal clamping workpieces, that is, the workpieces are placed horizontally and ground, and elastic chucks are used to clamp the workpieces. The workpiece is driven to rotate, and then the clamping method is positioned by the V-shaped block; the grinding wheel is fed in the axial direction of the workpiece; the rough grinding wheel and the fine grinding wheel are used to grind the adjacent parts of the workpiece edge at the same time; however, this The elastic collet and the V-shaped block will act on the handle of the workpiece at the same time, forming over-positioning. When the workpiece rotates, the axis will drift, and the coaxiality error between the blade diameter and the handle will be large after machining; and the axial feed method Low efficiency; at the same time, because the rough grinding wheel and the fine grinding wheel act on the workpiece at the same time, the accuracy of the rough grinding is not easy to detect, and the horizontal grinding takes up a lot of space and the equipment is bulky; moreover, in the prior art, the feeding and discharging All adopt the tray loading method. Before feeding, an additional swinging process is required to place the workpiece into the tray, which increases the process and reduces production efficiency.

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