TWI665040B - Milling chuck having detachable components - Google Patents

Abstract

A combined milling and clamping device includes a tapered shank for connecting a main shaft of a milling machine, and an elastic chuck for installing a cutter. The elastic chuck has a mounting section and a clamping section, and the mounting section is installed. In the support section of the tapered shank, the clamping section extends out of the support section, and the clamping section is provided with several axial grooves which are parallel to each other and open at one end, and a plurality of elastic claws are formed between the axial grooves. ; And a locking member provided outside the support section, when the locking member is locked, force is applied to several elastic claws to deform it elastically, and then the tool is directly clamped inward to increase the tool locking torque and lift the tool Clamping accuracy, improve processing efficiency.

Description

Combined milling and clamping device

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

Milling refers to the use of cutters for milling processing. Most of the tools used for processing use elastic chuck clamping methods or use the elastic deformation method of the inner hole of the clamp to lock the tools. In the tapered shank; when in use, the conventional elastic chuck is used to indirectly lock the tool. Generally, there is insufficient locking torque, the tool has a sliding phenomenon, and the machining efficiency cannot be improved. The elastic chuck is easy to slide or deform during milling. Vibration and other reasons are easy to burst and damage, which affects the quality of milling processing.

On the other hand, the tool is locked by the elastic deformation of the holder body. Because the holder body is not a truly elastic material, a strong precision mechanical structure is often required to lock the tool. During the milling process, it is often due to vibration, thermal energy, 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 integrally formed with the tapered shank, so that the elastic strain energy generated by the elastic chuck is limited to a certain degree, and the clamping force of the elastic chuck on the tool is not enough, so that it is milling. During processing, sometimes the tool may gradually protrude 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 improves the elastic strain energy that each elastic claw piece can produce. Then, the clamping force of the elastic chuck directly on the tool is improved, and the combined milling and clamping device can effectively enhance the deformation resistance of the elastic chuck.

A secondary object of the present invention is to provide a combined milling and clamping device, in which a combined elastic chuck can directly clamp a tool, improve the tightening torque and clamping accuracy of the tool, and prevent the tool from sliding. Those who effectively improve processing efficiency.

A combined milling and clamping device capable of achieving the above-mentioned object of the invention includes: a tapered shank having a connecting section and a supporting section integrally formed at one end far from the supporting section, Connected to a milling machine main shaft; an elastic chuck, a tool installation hole for installing a tool is formed inside the elastic chuck, the elastic chuck is tightly installed in the support section, and partly protrudes from the support section, The elastic chuck is provided with a plurality of axial grooves which are parallel to each other and open at one end, and a plurality of elastic claw pieces are formed between the plurality of axial grooves; and a locking member provided outside the support section is provided. When locking, a force is applied to the elastic claws to elastically deform it, and then the tool installed in the tool mounting hole is clamped directly inward.

In a preferred embodiment of the present invention, the lock member is a lock nut, and the support section is provided with an external thread that is thread-fitted with the lock nut.

In a preferred embodiment of the present invention, the elastic chuck has a mounting section and a clamping section, the mounting section is tightly installed in the support section, and the clamping section extends out of the support section, and The clamping section is provided with the plurality of elastic claw pieces.

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

Wherein, the tapered shank 10 has a connecting section 11 and a supporting section 12 integrally formed. The connecting section 11 is far from the supporting section 12 at one end, and is connected to the milling machine spindle 40 in a known manner. The supporting section 12 is internal The cavity 13 is hollow and formed as a part of the receiving chamber 13 for receiving the elastic collet 20.

The elastic chuck 20 has a mounting section 21 and a clamping section 22, and a cutter mounting hole 23 is formed inside the mounting section 21 and the clamping section 22. The mounting section 21 is inserted into the receiving chamber 13 of the tapered shank 10 and is tightly installed in the supporting section 12. The clamping section 22 extends out of the supporting section 12 and the clamping section 22 A plurality of axial grooves 24 parallel to each other and open at one end are formed on the upper side, and a plurality of elastic claw pieces 25 are formed between the plurality of 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 the locking pieces 30 to provide an inward clamping force.

The locking member 30 is a locking nut, and the supporting section 12 is externally provided with an external thread 14 matching with the locking nut thread 31. By locking the locking member 30, the purpose of elastically pressing the elastic claw pieces 25 inward 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 penetrated into the receiving chamber 13 of the tapered shank 10 and communicates with the tapered shank 10. The supporting section 12 is connected; then the tapered shank 10 is mounted on the main shaft 40 of the milling machine; the tool 50 such as a milling cutter is passed 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 presses each of the elastic claw pieces 25 of the elastic chuck 20 inward, to directly and stably clamp 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 each elastic claw piece of the elastic chuck, which improves each The elastic strain energy generated by an elastic claw piece can further increase the clamping force of the elastic chuck on the tool. The combined milling and clamping device can effectively enhance the anti-deformation ability of the elastic chuck, thereby improving 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 sliding phenomenon, 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. 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.

10‧‧‧ tapered handle

11‧‧‧ connecting section

12‧‧‧ support section

13‧‧‧capacity room

14‧‧‧ male thread

20‧‧‧ Elastic Chuck

21‧‧‧Installation Section

22‧‧‧ clamping section

23‧‧‧Tool mounting holes

24‧‧‧Axial groove

25‧‧‧ Elastic Claw

30‧‧‧Locking parts

31‧‧‧Thread

32‧‧‧through hole

40‧‧‧milling spindle

50‧‧‧tool

Fig. 1 is a sectional view of the combined milling and clamping device of the present invention; Fig. 2 is an exploded sectional view of the combined and milling clamping device; and Fig. 3 is a sectional view of the combined and milling clamping device after installing a cutter view.

Claims (2)

A combined milling and clamping device includes: a tapered shank having a connection section and a support section that are integrally formed; an end of the connection section remote from the support section and connected to a spindle of a milling machine; An elastic chuck, a cutter mounting hole for installing a cutter is formed inside the elastic chuck, the elastic chuck is tightly installed in the support section, and partially extends out of the support section. Axial grooves that are parallel to each other and open at one end, and a plurality of elastic claws are formed between the axial grooves; and a locking member provided outside the support section, when the locking member is locked, force is applied The elastic claws are elastically deformed on the plurality of elastic claw pieces, and then the tool installed in the tool mounting hole is directly clamped inward; wherein the elastic chuck has a mounting section and a clamping section, and the mounting section is tightly installed. Inside the supporting section, the clamping section extends out of the supporting section, and the clamping section is provided with the plurality of elastic claw pieces. The combined milling and clamping device according to item 1 of the scope of the patent application, wherein the locking member is a lock nut, and an external thread is provided on the support section to cooperate with the lock nut.