CN112453440B

CN112453440B - Main shaft structure of processing machine with rotating shaft

Info

Publication number: CN112453440B
Application number: CN201910857664.2A
Authority: CN
Inventors: 李佩玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2024-01-02
Anticipated expiration: 2039-09-09
Also published as: CN112453440A

Abstract

The invention relates to a main shaft structure of a processing machine with a rotating shaft, which is applicable to be arranged on a sleeve, wherein the rotating shaft structure comprises: the shaft body is pivoted on the sleeve and is provided with an extending section and a combining section which are integrally formed in sequence along the axial direction, and the extending section and the combining section are both positioned outside the sleeve. Therefore, the invention moves forward the joint of the joint section of the shaft body and the tool holder to the processing position, so that the tool holder groove of the joint section is combined with the tool holder, and a cutter head with a shorter tool holder can be used for milling (or deep hole processing) a deeper groove of a workpiece, thereby improving the structural strength of the rotating shaft, ensuring the rigidity of the cutter head and improving the processing precision.

Description

Main shaft structure of processing machine with rotating shaft

Technical Field

The present invention relates to a spindle of a processing machine, and more particularly, to a spindle structure of a processing machine having a rotation shaft.

Background

As shown in fig. 1, a partial state diagram of a spindle 10 and a tool holder 100 of a general processing machine is shown, the spindle 10 is mainly formed by sleeving a plurality of bearings 12 outside a rotating shaft 11 and penetrating a sleeve 13, a protecting cover 14 is arranged on the end of the sleeve 13 for penetrating the rotating shaft 11, and when the spindle is operated, the sleeve 13 and the protecting cover 14 are in a fixed state, the rotating shaft 11 drives the tool holder 100 to rotate relative to the sleeve 13, and a workpiece is processed by a cutter disc 101 combined on the tool holder 100.

Generally, when a workpiece with a deep hole is machined, a tool holder 100 with a long length of a tool holder 102 is required to be used, however, in such a use mode, when machining is performed, the joint of a spindle 10 and the tool holder 100 is the weakest part, namely the joint of a key groove 104 of the tool holder 100 and a restraint key 111 of a rotating shaft 11, and at the same time, the tool head 101 fixed on the tool holder 100 is easy to shake due to the long length of the tool holder 102, so that the cutting efficiency is affected when re-cutting is performed, and the machining precision is affected when finishing is performed.

In addition, since the insertion portion 103 of the tool holder 100 is inserted and positioned on the spindle 10, and the key slot 104 of the tool holder 100 is only engaged with the restraining key 111 fixed on the rotating shaft 11, the joint of the spindle 10 and the tool holder 100 is far away from the machining position of the cutter disc 101, so that the engaging positions of the tool holder 100 and the rotating shaft 11 are subjected to larger stress due to excessive rotation and shaking of the tool holder 100 in the process of machining rotation and machining operation of the rotating shaft 11, and the engaging positions of the tool holder 100 and the rotating shaft 11 are easily damaged and deformed.

It should be noted that, when the workpiece with deeper machining holes is machined, the long nose spindle can be used to overcome the defects, that is, the long nose spindle can be used, the cutter handle with a shorter cutter handle can be used to machine deep holes or mill grooves, so that the rigidity of the cutter disc is ensured, and the machining precision is improved.

Disclosure of Invention

The invention aims to provide a main shaft structure of a processing machine with a rotating shaft, which is mainly applicable to deep hole processing or groove milling, and can ensure the structural strength of the rotating shaft at the same time so as to improve the processing precision.

In order to achieve the above object, the present invention is a spindle structure of a processing machine having a rotating shaft, the spindle structure being adapted to be assembled to a sleeve, the rotating shaft structure comprising: the shaft body is pivoted on the sleeve and is provided with an extending section and a combining section which are integrally formed in sequence along the axial direction, and the extending section and the combining section are both positioned outside the sleeve.

The invention has the following effects: because the shaft body is provided with the extension section positioned outside the sleeve, the joint of the joint section of the shaft body and the tool holder moves forward to the processing position, and the tool holder groove of the joint section is combined with the tool holder, so that the tool holder with a shorter tool holder can be used for milling (or deep hole processing) a deeper groove of a workpiece, thereby improving the structural strength of the rotating shaft, ensuring the rigidity of the tool holder and improving the processing precision.

Preferably, the shaft body further has a pivot section integrally formed along an axial direction, the pivot section is located in the sleeve, the extension section is located between the coupling section and the pivot section, and the coupling section has a tool holder slot extending along the axial direction.

Preferably, the extending section of the shaft body is tapered from the pivoting section towards the combining section.

Preferably, the coupling section of the shaft body is extended from the extension section in equal diameter.

Preferably, the outer diameter of the coupling section of the shaft body is smaller than or equal to the outer diameter of the extension section.

Drawings

FIG. 1 is a partial state diagram of a typical machining machine spindle combined with a tool holder;

FIG. 2 is a perspective view of an embodiment of the present invention;

FIG. 3 is an assembled cross-sectional view of an embodiment of the present invention, showing the rotation shaft of the present invention coupled to the sleeve;

FIG. 4 is an operational schematic diagram of an embodiment of the present invention, showing a state of milling grooves of a rotating shaft of the present invention;

FIG. 5 is an assembled cross-sectional view of another embodiment of the present invention, showing the extension section of the shaft body of the present invention tapering from the pivot section toward the coupling section.

The reference symbols in the drawings indicate:

the prior art comprises the following steps:

spindle 10 rotation shaft 11

Restraint key 111 bearing 12

Sleeve 13 protecting cover 14

100 cutterhead 101 with handle

Insert 103 of handle 102

Key groove

The invention comprises the following steps:

sleeve 20 bearing 21

The shaft body 30 is pivoted with the section 31

Extension 32 joining section 33

Handle slot 331 handle 41

Cutterhead 42 workpiece 43

Axial X

Detailed Description

The following description of the present invention will be made clearly and fully, and it is apparent that the embodiments described are some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 2 to 4, the spindle structure of a processing machine with a rotating shaft provided by the embodiment of the invention is suitable for being assembled on the sleeve 20, the rotating shaft structure comprises a shaft body 30, the shaft body 30 is provided with a pivoting section 31, an extending section 32 and a combining section 33 which are sequentially and integrally formed along the axial direction X, and the combining section 33 is provided with a tool holder slot 331 extending along the axial direction X. Wherein:

the pivot section 31 of the shaft body 30 is pivoted to the sleeve 20 by a plurality of bearings 21, so that the pivot section 31 is pivoted inside the sleeve 20.

The extension section 32 of the shaft body 30 extends from the pivoting section 31 towards the connecting section 33 in a constant diameter manner. While the extension 32 of the shaft body 30 is located outside the sleeve 20.

The coupling section 33 of the shaft body 30 is extended from the extension section 32 in equal diameter, and the coupling section 33 is located outside the sleeve 20. In the present embodiment, the joint section 33 is a portion joined to the holder 41, and the joint section 33 and the extension section 32 are distinguished by imaginary lines in fig. 2 and 3.

The above description is the structure and configuration of the main components of the embodiment of the invention. The operation and efficacy of the present invention are described below.

The present invention particularly designs the pivot section 31, the extension section 32 and the coupling section 33 of the shaft body 30 integrally formed in sequence along the axial direction X, and locates the extension section 32 and the coupling section 33 outside the sleeve 20, so that the coupling position between the coupling section 33 of the shaft body 30 and the tool holder 41 is moved forward to the processing position, thereby having the following effects:

first, strength and stability of the joint between the shaft body 30 and the handle 41 are enhanced, and vibration caused by shaking is reduced.

Secondly, the processing efficiency is improved when the re-cutting pin processing is facilitated; the precision of the finish machining is improved; the damping is facilitated and the lifetime of the cutterhead 42 is increased.

In addition, as shown in fig. 4, since the extension section 32 and the coupling section 33 of the shaft body 30 are disposed outside the sleeve 20 and the extension section 32 and the coupling section 33 of the shaft body 30 are not sleeved with the outer tube, the outer diameter is smaller, the cutter 42 can be smaller, and the cutter can be used for deep hole machining or groove milling with smaller aperture or groove diameter, and simultaneously, small internal angle machining operation can be performed on smaller square grooves and square holes, so as to improve the applicability of the rotating shaft machining.

It should be noted that, the shaft body 30 is integrally formed with the pivot section 31, the extension section 32 and the coupling section 33 along the axial direction X, and the extension section 32 and the coupling section 33 are located outside the sleeve 20, so that the distance between the coupling section 33 and the pivot section 31 is increased by the integrally connected extension section 32, so that the cutter 42 with a shorter cutter handle can be used after the handle slot 331 of the coupling section 33 is combined with the handle 41, so as to shorten the distance between the clamping positions of the handle 41 and the shaft body 30 and the machining positions of the cutter 42, and the clamping positions of the handle 41 and the rotating shaft can not generate larger stress due to overlarge rotation and shaking of the handle 41 in the process of machining rotation and machining operation, thereby avoiding damage to the clamping positions of the handle 41 and the rotating shaft.

Finally, as shown in fig. 5, the extension section 32 of the shaft body 30 is tapered from the pivot section 31 toward the coupling section 33, and the coupling section 33 is extended from the extension section 32 in equal diameter, and the outer diameter of the coupling section 33 is smaller than or equal to the minimum outer diameter of the extension section 32, so as to improve the structural strength of the shaft body 30.

In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A spindle structure of a processing machine having a rotation shaft, characterized in that the spindle structure of the processing machine having a rotation shaft comprises:

a sleeve;

the shaft body is pivoted on the sleeve and is provided with an extending section and a combining section which are integrally formed in sequence along the axial direction, and the extending section and the combining section are positioned outside the sleeve;

the shaft body is further provided with a pivoting section integrally formed along the axial direction, the pivoting section is pivoted in the sleeve by a plurality of bearings, the extending section is positioned between the combining section and the pivoting section, and the combining section is provided with a tool holder groove along the axial direction;

the tool holder is assembled in the tool holder groove;

the extension section formed by integral connection increases the distance between the combining section and the pivoting section, so that the cutter head with a shorter cutter handle can be used after the cutter handle groove of the combining section is combined with the cutter handle, and the distance between the clamping part of the cutter handle and the shaft body and the processing part of the cutter head is shortened.

2. The spindle structure of claim 1, wherein the extension of the spindle body tapers from the pivot section toward the coupling section.

3. The spindle structure of claim 1, wherein the coupling section of the spindle body is equiradially extended from the extension section.

4. The spindle structure of claim 1, wherein the outer diameter of the coupling section of the spindle body is less than or equal to the outer diameter of the extension section.