Powder sintering forming method for cutting tool and cutting body thereof

A cutting tool, sintering molding technology, applied in the direction of manufacturing tools, drilling tool accessories, metal processing equipment, etc., can solve the problems of increasing manufacturing costs, consuming tungsten carbide steel, increasing manpower, material resources and costs, and reducing production costs, The effect of saving manpower and improving processing accuracy and quality

Inactive Publication Date: 2011-09-21
钟淼芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the handle portion and the drill body portion of this micro-drill must be cut and ground by metal processing machinery to form the concave hole and the corresponding convex rod, which consumes manpower and time, and increases the manu

Method used

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  • Powder sintering forming method for cutting tool and cutting body thereof
  • Powder sintering forming method for cutting tool and cutting body thereof
  • Powder sintering forming method for cutting tool and cutting body thereof

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Embodiment Construction

[0042] Relevant present invention is to achieve above-mentioned purpose, adopts technical means and effect thereof, enumerates feasible embodiment hereby, and cooperates accompanying drawing to illustrate as follows:

[0043] First, see figure 1 and figure 2 , the present invention is mainly aimed at cutting tools 1 such as a drill bit and a helical end mill, especially a micro drill bit for drilling a circuit board as shown in the figure. The powder sintering molding method of the cutting tool 1 and its cutting body 2 of the present invention is used to make a cutting body 2 (drill body) that contains one end 4 and the opposite end rod end 5. The helical cutting edge 7 and chip flute 8 , and the cutting body 2 is directly inserted into the hole 6 of the shank body 3 with the rod end 5 , forming a cutting tool 1 . In addition, the present invention can also be as Figure 9 As shown, the cutting body 17 is produced by powder sintering and the shank body 18 is integrally sin...

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Abstract

The invention relates to a powder sintering forming method for a cutting tool and a cutting body thereof, which comprises the following steps of: manufacturing a cutting body workpiece with the same shape as the cutting body of a drill, a micro drill or a spiral end mill; performing injection coating forming at the periphery and one end of the cutting body workpiece to obtain a thermoplastic plastic mold body; rotatably withdrawing a cutting body forming mold cavity of the plastic mold body from the other end of the cutting body workpiece; injecting cutter material powder and a mixed binder thereof into the cutting body forming mold cavity, and injecting metal powder and a mixed binder thereof into a handle body forming mold cavity of a forming mold to prepare a cutting body powder dense body connected with a handle body powder dense body; extracting, degreasing to separate the binder, and heating to remove the plastic mold body; and sintering the cutting body powder dense body and the handle body powder dense body at a high temperature to prepare the cutting tool integrating the cutter material powder sintering cutting body with the metal powder sintering handle body.

Description

technical field [0001] The invention relates to a cutting tool molding method, in particular to a powder sintering molding method for cutting tools such as drills, micro drills and helical end mills. Background technique [0002] With the rapid development of the electronics industry and the rapid development of electronic products, the size of the printed circuit board (PCB) is getting smaller and smaller. Correspondingly, the processing equipment required in the production process is becoming more and more sophisticated. Drills used for drilling printed circuit boards are smaller than ordinary drills, and the micro drills used for drilling printed circuit boards are consumables. The production of such micro drills is often produced in large quantities. Therefore, if the manufacture of micro drills can be simplified The method will surely reduce the manufacturing cost of the micro-drill. [0003] Known miniature drill bit comprises a handle part and a drill body part, and ...

Claims

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Application Information

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IPC IPC(8): B22F3/10B23B51/00
Inventor 钟淼芳
Owner 钟淼芳
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