CN202010790U

CN202010790U - Numerically-controlled tool holder roll-locking mechanism

Info

Publication number: CN202010790U
Application number: CN2011200727677U
Authority: CN
Inventors: 杨俊召
Original assignee: CHANGZHOU HONGDA MACHINE TOOL CNC Co Ltd
Current assignee: CHANGZHOU HONGDA MACHINE TOOL CNC Co Ltd
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2011-10-19
Anticipated expiration: 2021-03-18

Abstract

A numerically-controlled tool holder roll-locking mechanism comprises a servomotor, a box body, a duplicate gear, a roller frame, a roller, an annular gear ring, a fixed gear ring, a cutter head, a revolving shaft, a nut and a cam gear ring mounted on the revolving shaft through a button; the roller frame is supported on the revolving shaft through a bearing, the nut is screwed on the revolving shaft, and the duplicate gear is meshed with the roller frame. The numerically-controlled tool holder roll-locking mechanism further comprises an initial positioning pin, a pin seat and a disc spring, wherein the pin seat is mounted on the box body, the initial positioning pin is inserted into the pin seat, a groove matched with the lower end of the initial positioning pin is formed on the cam gear, one side of the disc spring is propped against the inner end surface of the roller frame, the other side of the disc spring is propped against the nut, the rear end surface of the cam gear ring is a stepped surface, and the roller can roll along the rear end surface of the cam gear ring. The numerically-controlled tool holder roll-locking mechanism provided by the utility model has the advantages of small noise and fast locking, and can avoid looseness after locking.

Description

Numerically-controlled slide rolling retaining mechanism

Technical field

The utility model relates to a kind of numerically-controlled slide rolling retaining mechanism, is used on the automatic flying knife tower of Digit Control Machine Tool.

Background technology

The automatic flying knife tower of Digit Control Machine Tool is driven by servomotor at present, and the employing motor is just being changed the position, coarse positioning is spacing, the structure of motor counter-rotating locking.There is error in uncertain and part processing because of load, adds the difference that exists in the electrical control, and therefore for guaranteeing that knife rest can reliably working, cutterhead needs a certain amount of overshoot when tool changing is just changeed, and promptly the coarse positioning pin is faced directly to face directly with locating slot and will be thrown off a segment distance.When knife rest was locked, the coarse positioning pin pressed down under spring action, and cutterhead and cutterhead annex, cutter and pin dish etc. reverse under driven by motor, faced directly with suitable speed and coarse positioning pin and collided and dead by its limit, thereby realize the knife rest locking action.Because of the coarse positioning pin can only slide up and down in guide, and guide is fixed in the locating hole of casing, causes the coarse positioning pin need bear the huge impact shearing force, can produce following problem: 1.) vibrating noise was big when knife rest was locked, influence machine tool accuracy, infringement operator hearing; 2) knife rest locking speed is slow, can produce loosening phenomenon owing to extraneous stressed or vibrations after the locking.

Summary of the invention

The purpose of this utility model provides and a kind ofly locks that speed is fast, can not produce the numerically-controlled slide rolling retaining mechanism of loosening phenomenon after the locking.

The technical scheme that realizes above-mentioned purpose is: a kind of numerically-controlled slide rolling retaining mechanism, comprise servomotor, casing, duplicate gear, turning rolls, roller, ring gear, decide gear ring, cutterhead, gyroaxis, nut and be installed in cam gear ring on the gyroaxis by key, turning rolls is bearing on the gyroaxis by bearing, nut is screwed on the gyroaxis, duplicate gear and turning rolls engagement, also comprise alignment pin just, key seat and butterfly spring, key seat is installed on the casing, just alignment pin is inserted on the key seat, the groove that cooperates with the lower end of first alignment pin is arranged on the cam gear ring, one side of butterfly spring props up the inner face of turning rolls, the opposite side of butterfly spring props up nut, the rear end face of cam gear ring is a cascaded surface, and roller can roll along the rear end face of cam gear ring.

After adopting technique scheme, when the flying knife tower is worked automatically, high-speed servo motor rotates, drive the turning rolls rotation by duplicate gear, the turning rolls upper roller is rolled into lower plane by the last plane of cam gear ring rear end face circular arc concave surface, move behind the cam gear ring, three gear rings are thrown off engagement, turning rolls drives key, key drives the gyroaxis rotation, and the gyroaxis of rotation drives ring gear and cutterhead rotation, when cutterhead forwards assigned address to, just alignment pin inserts in the first locating slot of cam gear ring, servomotor suspends the back reverse rotation, drives the turning rolls rotation by duplicate gear, and the turning rolls upper roller is rolled into the plane by the lower plane of cam gear ring rear end face circular arc concave surface, the reach of cam gear ring, with ring gear, decide the gear ring engagement, the disk spring of turning rolls inner face extruding simultaneously makes disk spring produce compression, thereby keeping coupling mechanism force, and rear motor stops operating.The utility model is mainly used in the locking of numerical control turret knife rest, can not become flexible phenomenon owing to the stressed of the external world or vibrations produce after the fast knife rest locking of short, speed of this retaining mechanism locking time.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the fiting relation figure of roller of the present utility model and cam gear ring.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

As Fig. 1, shown in 2, a kind of numerically-controlled slide rolling retaining mechanism, comprise servomotor 13, casing 14, duplicate gear 12, turning rolls 3, roller 4, ring gear 7, decide gear ring 9, cutterhead 8, gyroaxis 6, nut 1 and be installed in cam gear ring 10 on the gyroaxis 6 by key 5, turning rolls 3 is bearing on the gyroaxis 6 by bearing, nut 1 is screwed on the gyroaxis 6, duplicate gear 12 and turning rolls 3 engagements, also comprise alignment pin 11 just, key seat 15 and butterfly spring 2, key seat 15 is installed on the casing 1, just alignment pin 11 is inserted on the key seat 15, the groove that cooperates with the lower end of first alignment pin 11 is arranged on the cam gear ring 10, one side of butterfly spring 2 props up the inner face of turning rolls 3, the opposite side of butterfly spring 2 props up nut 1, and the rear end face of cam gear ring 10 is cascaded surface 10-1, and roller 4 can roll along the rear end face 10-1 of cam gear ring 10.

Operation principle of the present utility model is as follows: when the flying knife tower is worked automatically, high-speed servo motor 13 rotates, drive turning rolls 3 rotations by duplicate gear 12, turning rolls 3 upper rollers 4 are rolled into lower plane by the last plane of cam gear ring 10 rear end face circular arc concave surfaces, move behind the cam gear ring 10, three gear rings are thrown off engagement, turning rolls 3 drives key 5, key 5 drives gyroaxis 6 rotations, the gyroaxis 6 of rotation drives ring gear 7 and cutterhead 8 rotations, when cutterhead 8 forwarded assigned address to, first alignment pin 11 inserted in the cam gear ring 10 first locating slots, and servomotor 13 suspends the back reverse rotations, drive turning rolls 3 rotations by duplicate gear 12, turning rolls 3 upper rollers 4 are rolled into the plane by the lower plane of cam gear ring 10 rear end face circular arc concave surfaces, and 10 reaches of cam gear ring are with ring gear 7, decide gear ring 9 engagements, the disk spring 2 of turning rolls 3 inner faces extruding simultaneously, make disk spring 2 produce compression, thereby keeping coupling mechanism force, and rear motor 13 stops operating.

Claims

1. numerically-controlled slide rolling retaining mechanism, comprise servomotor (13), casing (14), duplicate gear (12), turning rolls (3), roller (4), ring gear (7), decide gear ring (9), cutterhead (8), gyroaxis (6), nut (1) and be installed in cam gear ring (10) on the gyroaxis (6) by key (5), turning rolls (3) is bearing on the gyroaxis (6) by bearing, nut (1) is screwed on the gyroaxis (6), duplicate gear (12) and turning rolls (3) engagement, it is characterized in that: also comprise alignment pin (11) just, key seat (15) and butterfly spring (2), key seat (15) is installed on the casing (1), just alignment pin (11) is inserted on the key seat (15), the groove that cooperates with the lower end of first alignment pin (11) is arranged on the cam gear ring (10), one side of butterfly spring (2) props up the inner face of turning rolls (3), the opposite side of butterfly spring (2) props up nut (1), the rear end face of cam gear ring (10) is cascaded surface (10-1), and roller (4) can roll along the rear end face (10-1) of cam gear ring (10).