JPS6156807A - Grinding device - Google Patents

Abstract

PURPOSE:To obtain better cutting and prevent wear of cutting tool by injecting high pressure fluid from a thin hole communicating to a tip portion of a cutting tool and performing cutting work while forming a fluid layer on the tip portion of the cutting tool. CONSTITUTION:A cutting edge portion 1 of a cutting tool is made of, for example, WC super hard material or ceramic type super hard material, is provided with a thin hole 2 communicating to a tip portion. This thin hole 2 is formed by forming a groove on either of separate constructions of 1A and 1B and superposing, or by forming a hole portion to be porous in sintering of the tool. Next when mixture liquid of 32% of phosphate and 68% of alpha olefin is injected as an injection fluid, single molecular layer is formed on the cutting edge portion of the tip of the tool, and better cutting with less wear of cutting edge and better removal of chips can be obtained without less cutting resistance.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to improvements in the cutting edge portion of cutting tools.

(Problem Solving Means) In order to prevent the wear of the cutting tool and improve the cutting effect, the present invention provides a device that forms a communicating pore at the tip of the cutting blade and spouts fluid under high pressure from the pore. It is characterized by having been established.

(Embodiment) The present invention will be described below with reference to an embodiment of the drawings. Reference numeral 1 denotes a cutting edge portion of a cutting tool, for example, WC carbide material or ceramic carbide material is used. The pores 2 can be formed, for example, by forming a groove in one of the 18 parts of IA and overlapping them. Any method can be used, such as making the hole part porous or perforating the forming blade. 3 is the support handle of the tool, 4 is a fluid supply port communicating with the pore 2, and 5 is a pressurized supply fluid. A flow rate control valve 9 controls the supply fluid from a pump device (not shown) at a constant rate. 6 is a flexible vibrator connecting the valve 5 and the supply port 4.

The supply fluid can be a liquid, a gas, or a gas-liquid mixture.
A pressure of about 10 to 501<b> is ejected at the tip of the cutting blade. The jet force is ejected continuously, or in some cases in the form of digital pulses. The jet flow rate can be reduced from approximately 0.1 to
Control to about 1.50C/l1lin.

For example, when a mixed liquid of 32% phosphoric acid ester and 68% α-olefin is jetted as a jet fluid, a monomolecular layer can be formed on the cutting edge portion at the tip of the tool, resulting in less wear on the cutting edge. The removal of chips was good, the cutting resistance was low, and the cutting quality was good.

In addition, during cutting, the valve 5 is configured to be automatically throttled depending on the flow rate of the jet fluid, so that when cutting with the tool in pressure contact with the workpiece, the cutting part is not controlled without flow control. When the tool is removed from the workpiece, the control valve automatically closes to control the jet flow and prevent unnecessary flow away, which is effective.

〔effect〕

As described above, in the present invention, high-pressure fluid is ejected from the pores communicating with the tool tip to form a fluid layer at the tool tip while cutting is performed, resulting in good cutting performance and prevention of tool wear. It has a certain effect.

[Brief explanation of drawings]

The drawing is a structural diagram of an embodiment of the present invention. 1......Tool cutting edge 2・・・・・・・・・Pore 3・・・・・・・・・Pattern 4...Fluid supply port 6... Vibrator H permission person

Claims (1)

[Claims] 1. A cutting device comprising: a device for forming a pore communicating with a tip of a cutting blade of a cutting tool and ejecting a fluid under high pressure from the pore.