TW202015838A - Milling chuck having detachable components - Google Patents

Abstract

A chuck includes a hollow mounting part including a conic connection member and a lower support member; a hollow collet including a clamping member partially disposed in the support member and having an axial channel, longitudinal gaps on a surface, each gap having an open bottom, and latches each between two adjacent gaps in which a drill bit is partially inserted into the channel; and a fastener put on both the mounting part and the collet to secure to the support member with the clamping member partially disposed in the fastener, the latches fastened in the fastener, and the drill bit fastened in both the fastener and the channel.

Description

Combined milling and clamping device

The invention belongs to the field of milling, and in particular relates to a combined milling and clamping device.

Milling refers to the use of tools for milling. Most of the tools used for processing use the elastic chuck clamping method or the elastic deformation method of the inner hole of the gripper to lock the tool. The elastic chuck is installed on a spindle connected to the milling machine. In the tapered shank; in use, the conventional elastic chuck is used to indirectly lock the tool. Usually, the locking torque is insufficient, and the tool slips, which cannot improve the processing efficiency. The elastic chuck is prone to slip or deform during the milling process. Vibration and other reasons are easy to burst and damage, which affects the quality of milling.

On the other hand, the cutter body is elastically deformed to lock the tool. Because the holder body is not really an elastic material, it often requires a strong precision mechanical structure to lock the tool. During the milling process, it is often due to vibration, heat, etc. Factors, causing the tool to loosen or slip, affect the processing quality or cause damage to the workpiece.

On the other hand, the elastic chuck is generally formed integrally with the tapered shank, so that the elastic strain energy generated by the elastic chuck is limited to a certain extent, and the clamping force of the elastic chuck to the tool is not enough, so that the milling During processing, sometimes the tool may gradually extend from the elastic chuck, so that the workpiece is scrapped.

The purpose of the present invention is to provide a combined milling and clamping device, which includes a combined elastic chuck, which is easy to process the elastic claw pieces of the elastic chuck and improve the elastic strain energy produced by each elastic claw piece In order to enhance the clamping force of the elastic chuck directly on the tool, the combined milling and clamping device can effectively enhance the deformation resistance of the elastic chuck.

The second object of the present invention is to provide a combined milling and clamping device, the combined elastic chuck can directly clamp the tool, improve the locking torque and clamping accuracy of the tool, and prevent the tool from sliding, and can Effectively improve processing efficiency.

The combined milling and clamping device that can achieve the above-mentioned object of the invention includes: a tapered shank with an integrally formed connecting section and a supporting section, the connecting section being away from the supporting section at one end, Connected with a milling machine spindle; an elastic chuck, a tool mounting hole for installing a tool is formed inside the elastic chuck, the elastic chuck is tightly installed in the support section, and partially extends outside the support section, The elastic chuck is provided with a plurality of axial grooves parallel to each other and open at one end, and a plurality of elastic claws are formed between the axial grooves; and a locking piece provided outside the supporting section is locked by the locking piece When locking, a force is applied to the elastic claw pieces to elastically deform it, and then the tool installed in the tool mounting hole is directly clamped inward.

In a preferred embodiment of the present invention, wherein the locking member is a locking nut, the support section is provided with an external thread that is threaded with the locking nut.

In a preferred embodiment of the present invention, wherein the elastic chuck has an installation section and a clamping section, the installation section is tightly installed in the support section, the clamping section extends out of the support section, and Those clamping claws are provided on the clamping section.

Please refer to FIGS. 1 and 2 at the same time. The combined milling and clamping device provided by the present invention mainly includes: a tapered shank 10 for connecting a milling machine spindle 40, an elastic chuck 20 and a locking member 30.

Wherein, the tapered shank 10 has an integrally formed connecting section 11 and a supporting section 12. The connecting section 11 is away from the supporting section 12 and connected to the milling machine spindle 40 in a known manner; inside the supporting section 12 It is hollow and formed as a part of the chamber 13 for accommodating the elastic chuck 20.

The elastic chuck 20 has a mounting section 21 and a clamping section 22, and a tool mounting hole 23 is formed inside the mounting section 21 and the clamping section 22. The mounting section 21 is inserted into the chamber 13 of the tapered shank 10 and is tightly installed in the support section 12; the clamping section 22 extends out of the support section 12 and the clamping section 22 A plurality of axial grooves 24 parallel to each other and open at one end are formed, and a plurality of elastic claw pieces 25 are formed between the axial grooves 24.

The locking member 30 is installed outside the supporting section 12 and covers the clamping section 22 of the elastic chuck 20. When the locking member 30 is locked, a force is applied to the elastic claw pieces 25 to elastically deform it, thereby providing an inward clamping force.

The locking member 30 is a locking nut, and the supporting section 12 is provided with an external thread 14 that cooperates with the locking nut thread 31. By locking the locking member 30, the purpose of elastically forcing each elastic claw piece 25 inwardly can be achieved.

Referring to FIG. 3, when using the combined milling and clamping device provided by the present invention, the mounting section 21 of the elastic chuck 20 is first inserted into the chamber 13 of the tapered shank 10 and connected with the tapered shank 10 Connected to the support section 12; then install the tapered shank 10 on the milling machine spindle 40; and then pass a tool 50 such as a milling cutter through a through hole 32 on the locking member 30, into the tool mounting hole 23, and is installed On the elastic chuck 20; finally, by adjusting the lock nut 3, the locking member 30 urges the elastic claw pieces 25 of the elastic chuck 20 inwardly to achieve stable and direct clamping of the cutter 50 and complete the installation.

The combined milling and clamping device provided by the present invention includes a combined elastic chuck. Since the elastic chuck and the tapered shank are not integrally formed, it is easy to process the elastic claw pieces of the elastic chuck to increase the The elastic strain energy generated by an elastic claw piece can further improve the clamping force of the elastic chuck on the tool. The combined milling and clamping device can effectively enhance the deformation resistance of the elastic chuck, thereby improving the processing efficiency and accuracy . And its combined elastic chuck can directly clamp the tool, improve the locking torque and clamping accuracy of the tool, avoid the tool from sliding, and can effectively improve the processing efficiency.

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, and any equivalent implementation or change without departing from the technical spirit of the present invention should be included in The patent scope of this case.

10: tapered shank 11: connecting section 12: supporting section 13: chamber 14: external thread 20: elastic chuck 21: mounting section 22: clamping section 23: tool mounting hole 24: axial groove 25: elastic Claw 30: Locking piece 31: Thread 32: Through hole 40: Milling machine spindle 50: Tool

1 is a cross-sectional view of the combined milling and clamping device of the present invention; FIG. 2 is an exploded cross-sectional view of the combined milling and clamping device; and FIG. 3 is a cross-section of the combined milling and clamping device after installing a tool view.

10: Tapered shank

11: Connection section

12: Support section

13: Room

14: external thread

20: Elastic chuck

21: Installation section

22: clamping section

23: Tool mounting hole

24: axial groove

25: Elastic claw

30: Locking piece

31: Thread

32: through hole

40: Milling machine spindle

Claims (3)

A combined milling and clamping device includes: a tapered shank having an integrally formed connecting section and a supporting section, the connecting section being away from the supporting section and connected to a milling machine spindle; An elastic chuck, a tool mounting hole for mounting a tool is formed inside the elastic chuck, the elastic chuck is tightly installed in the support section, and partially extends out of the support section, the elastic chuck is opened Axial grooves parallel to each other and open at one end, a number of elastic claws are formed between the axial grooves; and a locking member provided outside the support section, when the locking member is locked, the force is applied Those that are elastically deformed on the plurality of elastic claws and then directly clamp the tool installed in the tool mounting hole inward. The combined milling and clamping device as described in item 1 of the patent application scope, wherein the locking member is a locking nut, and the support section is provided with an external thread that is threaded with the locking nut. The combined milling and clamping device as described in item 1 of the patent application, wherein the elastic chuck has an installation section and a clamping section, the installation section is tightly installed in the support section, and the clamping section is Those protruding out of the support section, and the clamping sections are provided with the plurality of elastic claws.

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