CN214977790U

CN214977790U - Electric spindle with taper hole convenient to replace

Info

Publication number: CN214977790U
Application number: CN202120382645.1U
Authority: CN
Inventors: 王刚; 戴野; 曲文印
Original assignee: Ningbo Tiankong Five Axis Cnc Technology Co ltd
Current assignee: Ningbo Tiankong Five Axis Cnc Technology Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-12-03
Anticipated expiration: 2031-02-20

Abstract

The utility model discloses an electric main shaft with a taper hole type convenient to replace, which relates to the technical field of electric main shafts and comprises a shell, a main shaft main body and a main shaft end piece which is detachably and coaxially fixed at the end part of the main shaft main body and used for placing a cutter, wherein the diameter of the joint of the main shaft main body and the main shaft end piece is the same, a spacer ring is sleeved at the joint, and the spacer ring is in interference fit with the main shaft main body and the main shaft end piece; the end piece of the main shaft is fixed on the shell through a bearing, one side of the bearing is fixed through a shoulder part of the shell and a spacer ring of the shell, and the other side of the bearing is fixed through a bearing fixing component; the utility model discloses a divide into main shaft main part and detachable main shaft end piece with the main shaft, when needs mate different tapering cutters, only need dismantle original main shaft end piece to change with required cutter tapering assorted main shaft end piece can, need not change the main shaft main part, the change process is simple, has greatly improved the adaptability of electricity main shaft to different tapering cutters.

Description

Electric spindle with taper hole convenient to replace

Technical Field

The utility model relates to an electricity main shaft technical field especially relates to an electricity main shaft that taper hole type is convenient for change.

Background

The electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machine tools, and the electric main shaft, a linear motor technology and a high-speed cutter technology push high-speed processing to a new era. The electric spindle comprises the electric spindle and accessories thereof, and comprises the electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changer and the like. The rotor of the motor is directly used as the main shaft of the machine tool, the shell of the main shaft unit is the motor base, and the motor and the main shaft of the machine tool are integrated by matching with other parts.

Although the processing efficiency is improved in the research and development of the electric spindle at the present stage, the production and processing process of the electric spindle is complex, the processing time is long, when a manufacturer wants to produce the electric spindle capable of matching with cutters with different tapers, a whole set of mandrel matched with the tapers of the electric spindle is required to be produced, the production period is long, and the production cost is high; or when a manufacturer using the electric spindle needs to replace cutters with different tapers, the whole mandrel needs to be replaced, the replacement time is long, and the production efficiency is reduced. Therefore, if the normal working performance of the electric spindle can be ensured, the taper hole type of the electric spindle is convenient to change, the applicability of the electric spindle to different taper cutters is improved, the production cost of manufacturers is greatly reduced, and the production efficiency of the manufacturers is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electricity main shaft that taper hole type is convenient for change to solve the problem that prior art exists, through being divided into main shaft main part and detachable main shaft end part with the main shaft, greatly improved the adaptability of electricity main shaft to different tapering cutters.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides an electric main shaft with a taper hole type convenient to replace, which comprises a shell, a main shaft body and a main shaft end piece which is detachably and coaxially fixed at the end part of the main shaft body and used for placing a cutter; the diameter of the joint of the main shaft main body and the main shaft end piece is the same, a spacer ring is sleeved at the joint, and the spacer ring is in interference fit with the main shaft main body and the main shaft end piece;

the main shaft end piece is fixed on the shell through a bearing, one side of the bearing is fixed through a shoulder of the shell and the spacer ring of the shell, and the other side of the bearing is fixed through a bearing fixing component.

Preferably, the bearing fixing component comprises a positioning ring and a front end cover connected with the end part of the main shaft, the positioning ring and the front end cover are tightly pressed on the other side of the bearing, and the positioning ring is fixed through a gland connected with the shell.

Preferably, the locating ring is a clearance fit with the housing.

Preferably, the front end cap is threadedly connected to the shaft end piece.

Preferably, the gland and the housing, and the spindle nose piece and the spindle body are all connected by bolts.

Preferably, the spacer ring is provided with a chamfer on the inner side of the end portion close to the spindle end piece.

Preferably, the spindle end piece is coaxially provided with a tool taper hole and a pull claw movable hole which are communicated, the tool taper hole is used for accommodating a tool, and the pull claw movable hole is used for generating loosening or tensioning action in the pull claw assembly.

Preferably, the pull claw movable hole is a stepped hole and comprises a first-step hole and a second-step hole which are communicated in sequence, the first-step hole is communicated with the through hole in the main shaft body, the diameter of the first-step hole is larger than that of the through hole in the main shaft body, and the diameter of the second-step hole is smaller than that of the first-step hole and is communicated with the cutter taper hole.

The utility model discloses for prior art gain following technological effect:

1. the utility model discloses a divide into main shaft main part and its detachable main shaft end piece with the main shaft, when needing to match the cutter of different tapering, only need dismantle original main shaft end piece, and change with the main shaft end piece that the required cutter tapering matches can, do not need to change the main shaft main part, the change process is simple, has greatly improved the adaptability of electric main shaft to different tapering cutters;

2. the utility model arranges the spacing ring at the joint of the main shaft end piece and the main shaft main body, and the cooperation between the spacing ring and the main shaft end piece and the main shaft main body is interference fit, thus enhancing the coaxiality of the main shaft end piece and the main shaft main body and playing the role of auxiliary connection;

3. the utility model discloses be provided with the bearing in the outer lane of main shaft end piece to fix the bearing on casing and spacer ring through the fixed subassembly of bearing, can guarantee the stability of main shaft end piece at the rotation in-process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of the electric spindle of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

wherein, 1, a shell; 2. a main shaft body; 3. a spindle end piece; 4. a spacer ring; 5. a positioning ring; 6. a nose piece; 7. chamfering; 8. a cutter taper hole; 9. a pull claw movable hole; 10. and a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1 to 2, the present embodiment provides an electric spindle with a tapered bore for easy replacement, which includes a housing 1, a spindle main body 2, and a spindle end piece 3 detachably and coaxially fixed at an end of the spindle main body 2 for placing a tool; the diameter of the joint of the main shaft body 2 and the main shaft end piece 3 is the same, a spacer ring 4 is sleeved at the joint, and the spacer ring 4 is in interference fit with the main shaft body 2 and the main shaft end piece 3; the shaft end piece 3 is fixed to the housing 1 by means of a bearing 10, the bearing 10 being fixed on one side by means of a shoulder of the housing 1 and its spacer ring 4 and on the other side by means of a bearing 10 fixing assembly.

This embodiment is through dividing into main shaft main part 2 and detachable main shaft end piece 3 with the main shaft, when the different tapering cutters of needs matching, only need dismantle original main shaft end piece 3 to change with required cutter tapering assorted main shaft end piece 3 can, need not change main shaft main part 2, the change process is simple, has greatly improved the adaptability of electric main shaft to different tapering cutters.

In order to ensure the stability of the spindle end piece 3, in this embodiment, the spacer ring 4 is arranged at the joint between the spindle end piece 3 and the spindle body 2, and the spacer ring 4 is in interference fit with the spindle end piece 3 and the spindle body 2, so that the coaxiality of the spindle end piece 3 and the spindle body 2 is enhanced, and an auxiliary connection effect is achieved; in the embodiment, the bearing 10 is further arranged on the outer ring of the spindle end piece 3, and the bearing 10 is fixed on the shell 1 and the spacer ring 4 through the bearing 10 fixing component, so that the stability of the spindle end piece 3 in the rotating process can be ensured.

Therefore, in the embodiment, the original main shaft is divided into the main shaft main body 2 and the main shaft end piece 3 for placing the cutter, so that the taper hole type of the electric main shaft can be conveniently changed, and the electric main shaft has strong applicability; the application in practice is mainly represented by: the manufacturer only needs to produce the main shaft end piece 3 with different types to be suitable for different types of cutters, so that the production cost can be reduced; when the cutter is replaced, a user only needs to replace the main shaft end piece 3 at the end part of the main shaft body 2, the replacement is more convenient, the replacement time can be obviously shortened, and the production efficiency is improved.

Further, in this embodiment, the bearing 10 fixing assembly includes a positioning ring 5 and a front end cover 6 connected to the main shaft end part 3, the positioning ring 5 and the shoulder of the housing 1 fix the outer ring of the bearing 10, and the front end cover 6 and the spacer ring 4 fix the inner ring of the bearing 10, thereby positioning the bearing 10; specifically, in the present embodiment, the positioning ring 5 is in clearance fit with the housing 1 and is fixed by a gland connected to the housing 1.

In order to facilitate the detachment of the front end cover 6, the front end cover 6 and the main shaft end piece 3 are connected through threads in the embodiment; the gland is connected with the shell 1 and the front end part of the main shaft is connected with the main shaft body 2 through evenly arranged bolts.

Because the spacer ring 4 and the spindle end piece 3 in the embodiment are in interference fit, in order to reduce the assembly difficulty between the spindle end piece 3 and the spacer ring 4, a chamfer 7 is arranged on the inner side of the end part, close to the spindle end piece 3, of the spacer ring 4 in the embodiment, and the specific chamfer 7 can be selected to be 60 degrees; the specific method for assembling and disassembling the end piece 3 and other components of the spindle in this embodiment is well known to those skilled in the art, and the assembling and disassembling process in this embodiment is not described in detail.

In the embodiment, the main shaft end part 3 mainly functions to place a cutter, specifically, in the embodiment, a cutter taper hole 8 and a pull claw movable hole 9 which are communicated with each other are coaxially arranged in the main shaft end part 3, and the cutter taper hole 8 is used for accommodating the cutter and is matched with a conical surface of the cutter; the pull claw movable hole 9 is a stepped hole and comprises a first-order hole and a second-order hole which are sequentially communicated, the first-order hole is communicated with a through hole in the main shaft body 2, the diameter of the first-order hole is larger than that of the through hole in the main shaft body 2, the diameter of the second-order hole is smaller than that of the first-order hole and is communicated with the tool taper hole 8, when a tool is loosened, the pull claw assembly can move to the first-order hole from the through hole in the main shaft body 2, the end portion of the pull claw assembly can be opened due to the fact that the diameter of the first-order hole is larger than that of the through hole, the tool can be loosened, tool changing can be carried out, after tool changing is completed, the pull claw assembly returns to the through hole again under the action of a pull rod, and the tool is clamped tightly.

It should be noted that the spindle end part 3 described above is only a specific structure, and those skilled in the art can adaptively design the spindle end part 3 according to the actual structure of the pulling claw assembly and the fixing manner of the pulling claw assembly to the tool, which is not limited to this embodiment.

The adaptability that carries out according to actual demand all is in the protection scope of the utility model.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An electric spindle with a taper hole type convenient to replace is characterized by comprising a shell, a spindle main body and a spindle end piece, wherein the spindle end piece is detachably and coaxially fixed at the end part of the spindle main body and used for placing a cutter; the diameter of the joint of the main shaft main body and the main shaft end piece is the same, a spacer ring is sleeved at the joint, and the spacer ring is in interference fit with the main shaft main body and the main shaft end piece;

2. The electric spindle with the taper hole convenient to replace as claimed in claim 1, wherein the bearing fixing assembly comprises a positioning ring and a front end cover connected with the end part of the spindle, the positioning ring and the front end cover are pressed on the other side of the bearing, and the positioning ring is fixed by a gland connected with the shell.

3. The taper hole type replacement-convenient electric spindle according to claim 2, wherein the positioning ring is clearance-fitted to the housing.

4. An electric spindle of the tapered bore type for easy replacement according to claim 2, wherein the front end cap is threadably connected to the spindle end piece.

5. The electric spindle with the tapered bore of the easy-to-replace type according to claim 2, wherein the gland and the housing, and the spindle nose piece and the spindle body are connected by bolts.

6. An electric spindle of the tapered bore type for easy replacement according to claim 1, wherein the spacer ring is provided with a chamfer on the inside of the end adjacent the end piece of the spindle.

7. An electric spindle of the tapered bore type for easy replacement according to any one of claims 1 to 6, wherein the spindle end piece is provided coaxially with a tool tapered bore communicating with a pull jaw movable bore for receiving a tool therein, the pull jaw movable bore being adapted to produce a loosening or tightening action of the pull jaw assembly therein.

8. The electric spindle with the taper hole convenient to replace as claimed in claim 7, wherein the pull claw movable hole is a stepped hole and comprises a first step hole and a second step hole which are communicated with each other in sequence, the first step hole is communicated with the through hole in the spindle main body and has a diameter larger than that of the through hole in the spindle main body, and the second step hole is smaller in diameter than the first step hole and is communicated with the tool taper hole.