TWI674945B - Tool holder having a rigid sleeve - Google Patents

Abstract

A tool holder with an inline rigid retaining device is used in a processing machine having a mandrel, and includes a shank, a tapered outer surface received in the mandrel, and a shank male joint. An end portion; a tool erection portion including an axially extending tool erection aperture capable of accommodating and fixing a tool chuck, the tool erection portion also having an erection portion female joint end portion that matches the male joint end portion of the handle; At least one rigid retaining sleeve made of a highly rigid material. The rigid retaining sleeve has a set of pipe joint ends and a set of pipe joint ends, so that the shank, the rigid retaining sleeve and the tool mounting portion can end to end with each other. Concatenation.

Description

Tool holder with internal rigid retaining device

The invention relates to a tool holder, in particular to a tool holder having an in-line rigid retaining device.

At present, high-precision metal processing, such as drilling, milling, reaming, boring, inside and outside cutting, or surface grinding, often use Computer Numerical Control (CNC) processing machines, such as drills, milling cutters, etc. And other tools for processing. These tools all have a long shank structure, which is connected to the main shaft of the CNC processing machine through a tool holder. The main shaft can rotate at a high speed, which drives the tool held by the tool holder to rotate at a high speed. The target workpiece is processed.

Tool holders mounted on a processing machine often vibrate during use. Such vibrations disturb the process and have a negative impact on product accuracy. In practice, when various parts of the machine work in contact with each other, vibration always occurs. As the machine wears more and more, its dynamic performance changes. This means that new forms of vibration are generated during different life cycles of the machine. Vibration will cause the surface finish of the workpiece to deteriorate, which in turn will cause wear on the machine and tools, and in the worst case result in irreparable damage.

During a metal cutting operation, any vibrational movement between the tool holder and the workpiece can lead to undesired cutting performance, such as poor workpiece surface finish and exceeding Machined workpiece within tolerance range. In addition, such vibrations can damage the tool holder or the tool. The vibration phenomenon of the tool holder during processing is roughly proportional to the length of the tool holder. An elongated tool holder with a longer length or a combined connection type disclosed in patents such as USP1502528, USP2716030 and USP8821084. Due to the rigidity of the material of the tool holder, it is difficult to maintain sufficient rigidity of the tool holder, which makes the situation in which the tool holder and the tool vibrate are more serious.

The object of the present invention is to provide a tool holder, which has at least one in-line rigid retaining device, thereby improving the rigidity of the tool holder, suppressing the vibration phenomenon generated by the tool holder and the tool held by the tool holder, and maintaining the tool holder. Excellent workpiece surface finish and machining precision.

A secondary object of the present invention is to provide a tool holder with an inline rigid holding device, which is particularly suitable for use in an elongated tool holder or a combined connection tool holder with an extended length.

A tool holder with an inline rigid holding device capable of achieving the above-mentioned object of the invention is used in a processing machine having a mandrel. The tool holder includes: a shank portion, and a receiving portion A tapered outer surface in the mandrel and an end of a male joint of the shank; a tool erection part including an axially extending tool erection aperture, the tool erection aperture can accommodate and fix a tool and a tool chuck In one part, the tool erection portion also has an erection portion female joint end portion that matches the male joint end portion of the shank portion; and at least one rigid retaining sleeve made of a highly rigid material, the rigid retaining sleeve has a matching Sleeve female connector end of male end of the handle And a male end of the sleeve that matches the end of the female connector of the erection portion, and the handle, the rigid retaining sleeve, and the tool erection portion can be connected in series with each other end to end.

In a preferred embodiment of the present invention, it further includes at least one extension sleeve module connected in series between the handle portion, the rigid retaining sleeve and the tool mounting portion.

In a preferred embodiment of the present invention, the extension sleeve module has a module female connector end matching the end of the handle male connector and a module male connector matching the end of the mounting portion female connector. The end, and the handle, the extension sleeve module, the rigid retaining sleeve and the tool mounting portion can be connected in series with each other end to end.

In a preferred embodiment of the present invention, the tool mounting portion is made of a highly rigid material.

In a preferred embodiment of the present invention, the handle further includes a flange, the flange is substantially annular, and is disposed between the tapered outer surface and the end of the male joint of the handle, and the flange The edge includes a V-shaped groove extending around the circumference of the flange.

10‧‧‧ handle

11‧‧‧ tapered outer surface

12‧‧‧ end of male connector

13‧‧‧burst

14‧‧‧V-shaped groove

20‧‧‧Tool Erection Department

21‧‧‧Tool Erection Aperture

22‧‧‧Erection end of female connector

23‧‧‧tool chuck

30‧‧‧ rigid retaining sleeve

31‧‧‧ Casing female connector end

32‧‧‧Sleeve male end

40‧‧‧Extended Sleeve Module

41‧‧‧Module female connector end

42‧‧‧ Module male connector end

FIG. 1 is a cross-sectional view of a tool holder with an inline rigid retaining device according to the present invention; and FIG. 2 is similar to FIG. 1 except that an extension sleeve module is added.

Please refer to FIG. 1. A tool holder with an inline rigid retaining device provided by the present invention is used in a processing machine having a mandrel (not shown). The tool holder includes: a A shank 10 having a tapered outer surface received in the mandrel 11 and a shank male joint end 12; a tool mounting portion 20 made of a high rigid material such as tungsten carbide (Tungsten Carbide) can be selected, including an axially extending tool mounting aperture 21, the tool mounting aperture 21 Capable of accommodating and fixing a tool and a part of a tool chuck 23, the tool erection portion 20 also has an erection portion female joint end portion 22 that matches the male joint end portion 12 of the shank; and at least one, for example, tungsten carbide A rigid retaining sleeve 30 made of a high-rigidity material. The rigid retaining sleeve 30 has a sleeve female joint end portion 31 matching the shank male joint end portion 12 and a fitting female end portion 22. A sleeve male joint end portion 32, and the handle portion 10, the rigid retaining sleeve 30 and the tool mounting portion 20 can be connected in series with each other end to end.

The handle 10 further includes a flange 13. The flange 13 is substantially annular, and is disposed between the tapered outer surface 11 and the handle male joint end 12. One of the V-shaped grooves 14 extending circumferentially of the flange 13 allows the tool holder to be used in an automated tool change system of the processing machine.

The tool mounting portion 20 may be a cylindrical element. The tool mounting aperture 21 is connected to the tool chuck 23 by a screw connection, but the screw connection is not the only option. Those skilled in the art should understand that other fixing methods can be used. Tool approach.

Referring to FIG. 2, at least one extension sleeve module 40 is further provided between the handle portion 10 and the tool mounting portion 20. The extension sleeve module 40 has a matching end portion 12 of the male joint of the handle portion. The module female connector end portion 41 and a module male connector end portion 42 matching the mounting portion female connector end portion 22, and the shank portion 10, the extension sleeve module 40, the rigid retaining sleeve 30 and the The tool mounting portion 20 can be connected in series with each other.

The user can select the number of rigid retaining sleeves 30 and extension sleeve modules 40 used according to the needs of the processing environment, so as to adjust the required length of the tool holder.

The tool holder with an in-line rigid retaining device provided by the present invention has at least one in-line rigid retaining device, thereby improving the rigidity of the tool holder and suppressing the generation of the tool holder and the tool held by the tool holder Vibration phenomenon to maintain better surface finish and machining precision of the workpiece.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the technical spirit of the present invention should be included in Within the scope of the patent in this case.

Claims (5)

A tool holder with an inline rigid holding device is used in a processing machine having a mandrel. The tool holder includes:
A handle part, the handle part having a tapered outer surface received in the mandrel, and a handle male end;
A tool erection portion includes an axially extending tool erection aperture, the tool erection aperture can receive and fix a part of a tool and a tool chuck, and the tool erection portion also has an end portion matching the male joint of the handle An erection portion of the female joint end; and at least one rigid retaining sleeve made of a highly rigid material, the rigid retaining sleeve having a sleeve female joint end matching the shank male joint end, and a matching The end of the male joint of the sleeve at the end of the erection portion of the erection portion, and the handle portion, the rigid retaining sleeve, and the tool erection portion can be connected in series with each other end to end. The tool holder with an in-line rigid retaining device as described in item 1 of the scope of patent application, further includes at least one extension sleeve connected in series between the shank, the rigid retaining sleeve and the tool mounting portion. Tube module. The tool holder with an in-line rigid retaining device as described in item 2 of the scope of the patent application, wherein the extension sleeve module has a module female connector end matching the handle male connector end, and a The end of the male connector of the module that matches the end of the female connector of the mounting portion, and the handle, the extension sleeve module, the rigid retaining sleeve, and the tool mounting portion can be connected in series with each other end to end. The tool holder with an in-line rigid retaining device as described in item 1 of the patent application scope, wherein the tool mounting portion is made of a highly rigid material. As described in item 1 of the patent application, the tool holder with an inline rigid retaining device, wherein the handle further includes a flange, the flange is substantially annular, and is disposed on the outer surface of the cone and Between the ends of the male joint of the handle, and the flange includes a V-shaped groove extending around the circumference of the flange.