Disposal screw thread forming numerically controlled grinder for mini milling cutter for printed circuit board

Abstract

The invention relates to a disposable thread forming numerical control grinder for a micro milling cutter for a printed circuit board, which comprises a feeding mechanism, a grinding thread mechanism, an unloading mechanism and a worktable switching shaft. The grinding thread mechanism consists of a grinding left-hand thread mechanism and a grinding right-hand thread mechanism, the grindings of the left-hand thread and the right-hand thread are switched by using the worktable switching shaft when a milling cutter is machined, then a numerical control program memorized in the numerical controlgrinder is pressed, and a manipulator lays the grinded milling cutters on a tray in order; and the grinding left-hand thread mechanism mainly comprises an X1-axis linear slide rail, a Y1-axis linear slide rail, a left-hand angle adjusting plate, a grinding main shaft and a diamond abrasive wheel, while the grinding right-hand thread mechanism mainly comprises an X-axis linear slide rail, a Y-axislinear slide rail, a right-hand angle adjusting plate, a grinding main shaft and a diamond abrasive wheel, wherein the four linear slide rails are provided with a servo motor and a ball screw respectively. When producing the micro milling cutters, the disposable thread forming numerical control grinder can not only reduce production cost and improve working efficiency and product percent of pass,but also save labor and time and is convenient to operate.

Description

Technical field [0001] The invention relates to a numerical control grinder, in particular to a one-time thread forming numerical control grinder for a printed circuit board micro milling cutter. Background technique [0002] With the development of high technology in the printed circuit board industry, there is constant competition in the same industry, especially the rapid popularization of SMT and other technologies. The printed circuit board is developing in the direction of miniaturization and multilayering. The requirements for cutting tools are getting higher and higher. [0003] In the past traditional micro milling cutter production equipment, whether it is a machine for grinding left-hand threads or grinding right-hand threads, there are only two working axes on the whole machine, namely X-axis and A-axis, and X-axis controls the milling cutter Thread length, A axis is the thread angle of the control milling cutter. The grinding depth of the thread is adjusted by the fe...

AI Technical Summary

Problems solved by technology

Its disadvantages are: first, the production process takes a long time and has many processes; second, the product is loaded and unloaded back and forth during the production grinding process, resulting in a high scrap rate during cleaning, warehousing, and regrinding when it is out of the warehousing, resulting in a high cost of milling cutters. high

In addition, due to the separate grinding of the left and right rotations, it is easy to cause the depth of the two ends of the ground thread to be inconsistent, which makes it difficult to control the depth of the thread, and it is easy to produce concentricity eccentricity and out-of-roundness of the micro-milling cutter; its non-standard size is in the When used on printed circuit boards, it is easy to produce irregular and uneven force-bearing surfaces, resulting in milling cutters prone to breakage and damage to printed circuit boards during processing.

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