JPS614646A - Chip removal by high pressure flow - Google Patents

Abstract

PURPOSE:To remove chips from the circumference of a tool, improving the degree of finish on the machined surface, and keep off any damage to the milling cutter as well as to make service life in the cutter prolongable, by spraying a fluid of high pressure and high flow rate to the whole circumference of the milling cutter, in time of milling. CONSTITUTION:A nozzle 2 is attached to the whole circumference of a milling head spindle 1, and when a fluid of high pressure and high flow rate is sprayed to a milling cutter 4 from the nozzle 2 so as to make it unhit to a milling chuck 3, the high pressure, high flow fluid takes chips 5 away from and around the milling cutter 4, and absorbs heat of the cutter, strongly cooling it, so that metalcutting conditions are well promoted, and even in case of unmanned operation at night, sharpness in the cutter is maintained and, what is more, keeping off any damage to the cutter and improving finishing accuracy ever so better.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a high-pressure, high-flow rate flow that flows from the center of the cutting tool to the periphery by spraying a high-pressure, high-flow rate fluid around the entire circumference of the cutting tool during milling. This creates a flow of chips and removes them from around the tool, improving the finish of the machined surface, preventing damage to the cutting tool due to chips, and extending the life of the tool.

In addition, this invention enables more powerful tool cooling than before by spraying high-pressure, high-flow fluid around the cutting tool during milling, thereby increasing the tool circumferential speed and enabling high feed rates. It is made so that it can be processed.

In the past, chip removal was a major problem in milling. Particularly in vertical milling, chips tend to accumulate during machining, and the work-hardened chips are cut again, resulting in rapid damage to the tool and an untidy finished surface.

Furthermore, when vertical cutting tools are operated unmanned at night, it is not possible to remove chips during machining, and a large amount of work-hardened chips are cut again, reducing the sharpness of the tool and reducing cutting resistance. In some cases, cutting tools broke.

If such an accident occurs, broken tools cannot be replaced due to unmanned operation, resulting in a large loss of time as the tool continues to run idly. There was a risk that the spindle would be moved to a part that would have been machined if the tool had not broken, and that not only the milling chuck but also the spindle would be damaged.

Because of this danger, it is difficult to attach and remove workpieces, but in many cases unmanned operation is performed using horizontal milling cutters, where chips are easily removed by falling due to gravity. The present invention solves the strong demand for unmanned operation by using a vertical milling cutter in which workpieces can be easily attached and removed using a simple method.

In conventional milling, it is common to apply cutting fluid to the workpiece only from one direction, but if it is only applied from one direction, it is not possible to supply cutting fluid to the entire cutting edge.
Cutting conditions were poor. In the present invention, all cutting edges can be cooled by spraying high-pressure, high-flow fluid from the entire circumference, thereby improving cutting conditions.

The present invention will be described below with reference to the drawings.

A. A nozzle (2) is attached around the entire circumference of the milling head shaft (1).

(b) The nozzle (2) sprays fluid at high pressure and high flow rate onto the cutting tool (4) without hitting the milling cha and rim (3).

C. The high-speed, high-flow fluid is used to remove chips (5) from the cutting tool (4).
) and removes the heat from the cutting tool, powerfully cooling it.

[Brief explanation of drawings]

Figure 1 is a front view of the present invention.

Claims (1)

[Claims] During milling, high-pressure, high-flow fluid is sprayed around the entire circumference of the cutting tool to remove chips from around the tool and powerfully cool the tool.