CN218611713U

CN218611713U - Front-mounted cylinder type chuck electric spindle

Info

Publication number: CN218611713U
Application number: CN202223151457.1U
Authority: CN
Inventors: 赵玉松
Original assignee: Anyang Deyi Machine Tool Accessory Manufacturing Co ltd
Current assignee: Anyang Deyi Machine Tool Accessory Manufacturing Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-14
Anticipated expiration: 2032-11-28

Abstract

The front part and the rear part of the main shaft are respectively supported by a front bearing and a rear bearing, the front bearing and the rear bearing are arranged in a rear bearing seat, the rear bearing seat is arranged in a shell, a rear end cover is fixedly connected on the shell, the front end surface of the main shaft is of a hollow cylinder structure, six screw holes taking the axis of the main shaft as the center of a circle are formed in the bottom surface of the cylinder, mounting holes corresponding to the screws are formed in a flange plate of the cylinder chuck, the cylinder chuck is fixedly connected on the bottom surface of the cylinder through bolts penetrating in the mounting holes, at least three jackscrew holes used for screwing jackscrews are processed in the peripheral wall of the cylinder, the jackscrew holes are uniformly distributed on the peripheral wall of the cylinder, and the jackscrews are screwed in the jackscrew holes and then abut against the peripheral surface of the flange plate. The electric spindle chuck is convenient to center and adjust.

Description

Front-mounted cylinder type chuck electric spindle

Technical Field

The utility model relates to an electricity main shaft, in particular to leading cylinder type chuck electricity main shaft belongs to the lathe and equips accessory technical field.

Background

The existing precision spindle mainly clamps a tool or mainly clamps the tool in a pull-behind manner, and has a structure like a high-concentricity high-speed electric spindle assembling structure disclosed in 2019219345844 by the applicant, the structure is complex, the requirement on assembling precision is high, a front-mounted chuck comprises a common chuck, a three-jaw chuck, a cylinder-type chuck and the like, the three-jaw chuck is expensive and heavy, even if the three-jaw chuck can be centered, centering adjustment is required in the connection and installation of the three-jaw chuck and the electric spindle, no matter the joint, a flange (a chuck seat) is generally fixedly connected with the spindle through bolts along the axial direction of the spindle, the connecting structure of the chuck is like Chinese patent application number 2017213421277 (a precision diaphragm type internal-expanding external-clamping spindle), 6 or 8 axial bolts are generally arranged in the circumferential direction with the center of the spindle as a circle, the centering precision of the tool needs to be ensured by adjusting each bolt in debugging, repeated loosening and screwing are needed, a test is needed after each adjustment, the adjusting process is very complicated, and the radial processing precision of the spindle is also needed to be greatly influenced, or the bearing capability is greatly increased.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that exists among the present electric main shaft, provide a leading cylinder type chuck electric main shaft.

In order to realize the purpose of the utility model, the following technical proposal is adopted: a front-mounted cylinder type chuck electric main shaft comprises a shell, a stator fixedly connected with the shell, a main shaft and a rotor fixedly connected with the main shaft, wherein the rotor is arranged in the stator in a penetrating mode, the front portion and the rear portion of the main shaft are supported by a front bearing and a rear bearing respectively, the front bearing and the rear bearing are arranged in a rear bearing seat, the rear bearing seat is arranged in the shell, a rear end cover is fixedly connected onto the shell, the front end face of the main shaft is of a hollow cylinder structure, six screw holes which use the axis of the main shaft as the circle center are formed in the bottom face of the cylinder, mounting holes corresponding to screws are formed in a flange of the cylinder type chuck, the cylinder type chuck is fixedly connected onto the bottom face of the cylinder through bolts arranged in the mounting holes in a penetrating mode, at least three jackscrew holes used for screwing jackscrews are formed in the peripheral wall of the cylinder and are evenly distributed on the peripheral wall of the cylinder, and the jackscrews are screwed into the jackscrews and then abut against the peripheral face of the flange.

Further, the method comprises the following steps of; the number of the jackscrew holes is 4-6.

Further, the method comprises the following steps of; the inner diameter of the front bearing is larger than that of the rear bearing, the difference between the inner diameters of the front bearing and the rear bearing is larger than or equal to 15mm, and the diameter of the cylinder is 1.5-2.5 times of the inner diameter of the front bearing.

The utility model discloses an actively beneficial technological effect lies in: the electric main shaft chuck is convenient to adjust in centering, the diameter of the front end of the main shaft is large, and the diameter of the cylinder part is larger, so that the volume of the rear part of the main shaft does not need to be increased synchronously under the condition that the main shaft can bear larger radial load.

Drawings

Fig. 1 is a schematic view of the cylinder-less chuck of the present invention.

Fig. 2 is a schematic view of the cylinder type cartridge of the present invention being placed in the cylinder.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols refer to: 1: a housing; 2: a stator; 3: a main shaft; 4: a rotor; 5: a front bearing; 6: a rear bearing; 7: a rear bearing seat; 8: a rear end cap; 9: a cylinder; 10: a screw hole; 11: a jackscrew hole; 12: a flange plate; 13: a cylinder type chuck.

The utility model discloses in, cylinder type chuck is the product that can buy on the current market, and the improvement of this electricity main shaft has mainly adopted the great bearing of inner circle diameter difference with front bearing, rear bearing in connection structure and the front bearing at cylinder position, and other traditional electricity main shafts go up the part that does not relate to and do not mention.

As shown in fig. 1 and fig. 2, fig. 1 is a schematic view of an electric spindle, fig. 2 is a schematic view of a cylinder type chuck placed in a cylinder, the electric spindle of the front cylinder type chuck comprises a housing 1, a stator 2 fixedly connected with the housing, a spindle 3, and a rotor 4 fixedly connected with the spindle, the rotor is inserted into the stator, the front part and the rear part of the spindle 3 are respectively supported by a front bearing 5 and a rear bearing 6, the inner diameter of the front bearing is greater than that of the rear bearing, the difference between the inner diameters of the front bearing and the rear bearing is greater than or equal to 15mm, and the inner diameter is equal to the diameter of an inner ring of a straight bearing, in the embodiment, the front bearing is of 7017 type, and the inner diameter is 85mm; the rear bearing is 7212 type, the inner diameter is 60mmm, the front bearing is arranged in the shell, the rear bearing 6 is arranged in the rear bearing seat 7, the rear bearing seat 7 is arranged in the shell 1, and the rear end cover 8 is fixedly connected on the shell.

The front end face of the main shaft is of a hollow cylinder structure, 9 is a cylinder, the diameter of the cylinder is 1.5-2.5 times of the inner diameter of a front bearing, so that the capability of the main shaft for bearing radial load can be greatly improved, and the precision of a processed workpiece is ensured. The jackscrew holes are uniformly distributed on the peripheral wall of the cylinder, and the jackscrew is screwed into the jackscrew holes and then is propped against the peripheral surface of the flange plate.

This electricity main shaft cylinder type chuck installation is middle-upper, passes the mounting hole through six axial bolts earlier and connects soon in six screws with the preliminary constraint of ring flange, does not tighten the bolt, then adjusts the centering through rotatory jackscrew, adjusts each bolt-up interface after targetting in place, and more traditional adjustment mode is simple, convenient, swift, and the adjustment back is being pushed up because of there being the jackscrew, is difficult for taking place the deviation in the use.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. The utility model provides a leading cylinder type chuck electricity main shaft, includes the shell, with shell fixed connection's stator, main shaft, with main shaft fixed connection's rotor, the rotor is worn to establish in the stator, the front portion and the rear portion of main shaft are respectively through front bearing, rear bearing support, the front bearing is installed in the shell, the rear bearing is installed in the rear bearing seat, the rear bearing seat is installed in the shell, rear end cap fixed connection is on the shell, its characterized in that: the front end face of the main shaft is of a hollow cylinder structure, six screw holes which use the axis of the main shaft as the center of a circle are formed in the bottom face of the cylinder, mounting holes corresponding to the screws are formed in a flange plate of the cylinder type chuck, the cylinder type chuck is fixedly connected to the bottom face of the cylinder through bolts penetrating through the mounting holes, at least three jackscrew holes used for screwing jackscrews are machined in the peripheral wall of the cylinder, the jackscrew holes are uniformly distributed in the peripheral wall of the cylinder, and the jackscrews are screwed into the jackscrew holes and then abut against the peripheral face of the flange plate.

2. The front-mounted cylinder chuck motorized spindle of claim 1, wherein: the number of the top thread holes is 4-6.

3. The front-mounted cylinder chuck motorized spindle of claim 1, wherein: the inner diameter of the front bearing is larger than that of the rear bearing, the difference between the inner diameters of the front bearing and the rear bearing is larger than or equal to 15mm, and the diameter of the cylinder is 1.5-2.5 times of the inner diameter of the front bearing.