CN202278433U

CN202278433U - Spindle for numerical-control machine tool

Info

Publication number: CN202278433U
Application number: CN2011203902381U
Authority: CN
Inventors: 王晓铮; 李悦; 芦仪喜
Original assignee: Institute of Industry Technology Guangzhou of CAS
Current assignee: Institute of Industry Technology Guangzhou of CAS
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-06-20
Anticipated expiration: 2021-10-14

Abstract

The utility model discloses a spindle for a numerical-control machine tool, which comprises a motor, a power output end, cycloids and rollers, wherein the cycloids mesh with the rollers, the motor drives the cycloids or the rollers, and the power output end is connected with the rollers or cycloids. The spindle has the advantages that the conventional integral motor driving structure or directly-connected motor driving or motor driving by belt pulleys or gears is replaced by the cycloid and roller transmission mode, the torsion of the spindle is larger than that of the conventional spindle greatly, the spindle can be applied on the condition with large torsion during strong cutting, the number of engagement teeth and the structural rigidity of the spindle are high due to the transmission mode, and transmission precision is high while accurately rotary positioning can be realized due to zero-clearance rolling between the cycloids and the rollers.

Description

The main shaft that a kind of Digit Control Machine Tool is used

Technical field

The utility model relates to the Digit Control Machine Tool parts, especially relates to the main shaft that uses on a kind of Digit Control Machine Tool.

Background technology

The main shaft that uses on the existing Digit Control Machine Tool adopts motor-driven usually, drives or through connecting band, gear drive clutch end, drives workpiece or cutter and rotate the completion process through direct and clutch end one.For example compound or mill in the car process that requires the main shaft gyration location such as compound at turnning and milling, need the control of main shaft closed loop servo, because the clutch end of main shaft provides the main cutting force of process; It is flywheel moment; And motor self moment of torsion is very little, and in the bigger working angles of moment of torsion, this main shaft just is difficult to satisfy the production demand; And this spindle index mainly relies on motor to realize, can not realize arbitrarily angled accurate calibration.

Summary of the invention

It is big and can accurately turn round the main shaft that the Digit Control Machine Tool of location is used that the purpose of the utility model provides a kind of moment of torsion.

The technical solution of the utility model is: the main shaft that a kind of Digit Control Machine Tool is used; Comprise motor and clutch end; It also is provided with intermeshing cycloid and rolling element, wherein said motor-driven cycloid or rolling element, and said clutch end connects rolling element or cycloid.

Be the motion of rolling zero clearance between cycloid and the rolling element, and, the engagement of a plurality of cycloid tooths and rolling element arranged, thereby make overall construction intensity and rigidity increase, use under the high pulling torque condition when being specially adapted to high-rate cutting in same moment.

Said rolling element comprises cylinder, cydariform and spherical rolling element.Can select existing different shape rolling element for use, increase the adaptability of device.

The utility model has the advantages that: the kind of drive of using cycloid and rolling element; Substituted that traditional motor integral drives or motor through direct connection or band, gear drive formula structure, its moment of torsion is far longer than traditional main shaft, uses under the high pulling torque condition during applicable to high-rate cutting; And this kind kind of drive total number of teeth in engagement simultaneously is high; The rigidity of structure is good, rolls for the zero clearance between cycloid and the rolling element, and transmission accuracy is high and can accurately turn round the location.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment;

Accompanying drawing 2 is the mesh schematic representation of cycloid and rolling element among the utility model embodiment;

1, cycloid, 2, rolling element, 3, motor, 4, clutch end.

The specific embodiment

Embodiment:

Consult Fig. 1-2, a kind of Digit Control Machine Tool is used main shaft, comprises cycloid 1, rolling element 2, motor 3 and clutch end 4; Cycloid 1 is driven by motor 3, does eccentric rotary, and rolling element 2 connects clutch end 4; And be set in outside the cycloid 1, with cycloid 1 engagement, the back of slowing down is through clutch end 4 outputs.Clutch end 4 drives cutter or processing is accomplished in the workpiece rotation.

Consult Fig. 2; When cycloid 1 is driven rotation by motor 3, the engagement of half the cycloid tooth and rolling element was all arranged under arbitrary moment, this just makes the overall structure rigidity of main shaft increase; And in motion process; After motor slows down through the engagement of rolling element and cycloid, make integrally-built moment of torsion be far longer than the moment of torsion of motor self, can realize that the cutting under the high pulling torque is used.

In the present embodiment, cycloid 1 is driven by motor 3, and clutch end 4 connects rolling element 2; Also can drive rolling element 2 by motor 3; Clutch end 4 connects cycloid 1, can realize that equally the engagement of cycloid and rolling element is slowed down, and after slowing down, export and drive workpiece or cutter through clutch end 4.

In the present embodiment, rolling element 2 is cylindrical roller, also can be ellipsoid or spherical rolling element.

Above-listed detailed description is specifying to one of the utility model possible embodiments; This embodiment is not the claim in order to restriction the utility model; Allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1. the main shaft that Digit Control Machine Tool is used comprises motor and clutch end, it is characterized in that: it also is provided with intermeshing cycloid and rolling element, wherein said motor-driven cycloid or rolling element, and said clutch end connects rolling element or cycloid.

2. the main shaft that a kind of Digit Control Machine Tool according to claim 1 is used is characterized in that: said rolling element comprises cylinder, cydariform and spherical rolling element.