CN201012456Y

CN201012456Y - Digital controlled lathes head main spindle automatic braking device

Info

Publication number: CN201012456Y
Application number: CNU2007201071137U
Authority: CN
Inventors: 盛焕君
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-16
Filing date: 2007-03-16
Publication date: 2008-01-30
Anticipated expiration: 2017-03-16

Abstract

A head spindle automatic braking device of a numerically controlled lathe includes a box body. A spindle, which is driven by a belt pulley, is arranged in the box body. The front end of the spindle is equipped with a chuck combined with the conical face of the spindle. The back end of the spindle is equipped with a pushing-pulling mechanism for manipulating a chuck clamping tool. The utility model is mainly characterized in that the spindle of the lather head is equipped with a brake plate with a brake block of the braking device arranged on the box body, the brake plate arranged on the spindle is made tightly to stop the rotation of the spindle quickly. With the lathe head spindle structure with the brake plate and the brake device, the spindle can be clamped tightly after the quick shutdown of the lathe, which makes the processing time saved effectively. At the same time, the drilling or the milling can be implemented directly on axis parts without being moved to a milling machine. And the processing procedure is simplified and the working efficiency and the production accuracy are improved.

Description

Numerically controlled lathe head spindle dead-man's device

Technical field

The utility model relates to a kind of hydraulic pressure or pneumatic shuttle dead-man's device of tight numerically controlled lathe head spindle inertia rotation of stopping that utilizes.

Background technology

In centre numerically controlled lathe, can only carry out the turning of axial workpiece; screw thread; manufacturing procedures such as boring; and can't realize the milling operation; must move in addition on the milling machine when needing milling and carry out; like this when increasing manufacturing procedure; operation also bothers very much; and what have turning and milling function simultaneously can only be multifunctional numerical control lathe or machining center more than three; but this class lathe or machining center price are very expensive; being not suitable for large-scale promotion uses; and the main shaft after the centre numerically controlled lathe shutdown can continue rotation because of inertia; after must waiting for the main shaft stall, the manufacturing procedure of carrying out next step just can carry out; a lot of times of waste in the main shaft stalling, reduce operating efficiency.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the defective of prior art and a kind of numerically controlled lathe head spindle dead-man's device of the tight main shaft of stopping automatically after numerically controlled lathe is shut down is provided; make axial workpiece directly on centre numerically controlled lathe, carry out milling by this brake gear, increase work efficiency.

Technical problem of the present utility model is achieved through the following technical solutions:

A kind of numerically controlled lathe head spindle dead-man's device, comprise casing, be provided with the main shaft that drives rotation by belt pulley in the casing, this main shaft supporting is subjected in casing on the bearing of axial location, be provided with the chuck of the conical surface combination of holding workpiece in the front-end of spindle, trombone slide in this chuck and the main shaft is connected, the rear end is provided with the push-and-pull trombone slide and moves axially the push-pull mechanism of realizing that chuck clamps, it is characterized in that described lathe spindle is provided with and the fixing brake block of belt pulley, this brake block is between the brake shoes of the brake gear that is subjected to the control of pneumatic equipment or hydraulic test.

The axial location of described bearing comprises the preceding stifle and the preceding back-up ring of axial location fore bearing; The back stifle of axial location rear bearing, back back-up ring and degree of tightness nut.

Described push-pull mechanism comprises the umbrella crown that is connected the trombone slide rear end, is fixed with the three-jaw of push-and-pull umbrella crown on the main shaft and adjacent to the associating device of three-jaw.

Described brake gear is installed on the guide pillar that operates in vertically in the mount pad, and mount pad and case lid are fixed.

Compared with prior art, the utility model is to have additional a brake block on the lathe head spindle, this brake block is by stop the fast purpose of the existing automatic stall of main shaft of consolidation of the brake shoes that is installed in the brake gear on the casing, lathe head spindle structure with this brake gear is when the Machining of Shaft-type Parts keyway, need not other travelling workpiece to the milling machine milling, only need directly that groove milling get final product on lathe, simplify manufacturing procedure, increase work efficiency and the product precision.

Description of drawings

Fig. 1 is the utility model sectional structure schematic diagram.

Fig. 2 is a shape assumption diagram.

The specific embodiment

To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.

As Fig. 1～shown in Figure 2, back-up ring, 24-rear bearing behind back-up ring, 22-degree of tightness nut, the 23-before stifle, 19-chuck, 20-fore bearing, the 21-before stifle, 3-packing ring, 4-brake block, 5-belt pulley, 6-main shaft, 7-three-jaw seat, 8-umbrella crown, 9-trombone slide, 10-associating device, 11-locking nut, 12-brake gear, 13-brake shoes, 14-connecting plate, 15-mount pad, 16-guide pillar, 17-case lid, the 18-behind 1-casing, the 2-.

Numerically controlled lathe head spindle dead-man's device, comprise the casing 1 that fixes on the ground, be provided with the main shaft 6 that drives rotation by belt pulley 5 in the casing, casing is provided with the case lid 17 of sealing main shaft, described main shaft supporting is subjected in casing on the forward and backward bearing 20,24 of axial location, and fore bearing 20 carries out axial location by preceding stifle 18 that is located at its both sides and preceding back-up ring 21; Rear bearing 24 carries out axial location by back stifle 2 that is located at its both sides and back back-up ring 23, also is provided with the degree of tightness nut 22 that is threaded on the main shaft simultaneously in the back-up ring of back, and this degree of tightness nut pushing tow rear bearing 24 can axially be adjusted its installation site.

Be provided with the chuck 19 that combines with its conical surface in main shaft 6 front ends and be used for holding workpiece, the chuck trombone slide 9 interior with being located at main shaft is threaded, rear-end of spindle is provided with the push-and-pull trombone slide and moves axially the push-pull mechanism of realizing that chuck 19 clamps, this push-pull mechanism comprises the umbrella crown 8 that is fixed on trombone slide 9 rear ends, the umbrella crown pushing tow is with the short three-jaw that is movably connected on the three-jaw seat of selling, the three-jaw seat is threaded in main shaft 6 rear ends, three-jaw is by being set in also associating device 10 manipulations of axial slip on the main shaft, associating device slippage backward outwards opens three-jaw, pushing tow umbrella crown 8 moves backward thus, realizes chuck 19 clamping work pieces of front-end of spindle conical surface combination.

Main shaft 6 middle parts are provided with the belt pulley of being fixed by locking nut 11 5, this belt pulley drives main axis rotation by external motor input power, belt pulley one side is fixed with discoid brake block 4, can follow belt pulley rotates synchronously, this brake block is between two brake shoes 13 of brake gear 12, pneumatic equipment or hydraulic test connect brake gear 12 by pipeline, and the brake shoes of controlling this device realizes stopping tight or unclamps, and is provided with the packing ring 3 that is sleeved on the main shaft between brake block and the rear bearing 24 with both distances of interval; Described brake gear 12 is a kind of disc brake apparatus, directly the brake gear on the existing motorcycle of outsourcing is to reduce production costs, this brake gear connects on the guide pillar 16 that operates in vertically in the mount pad 15 by connecting plate 14, guide pillar moves forward or backward and makes brake shoes 13 simultaneously to identical or rightabout motion, to realize that stopping of brake block 4 is tight or to unclamp that mount pad is fixed on the case lid 17.

When using, the utility model needs after lathe spindle 6 is shut down, to carry out; only need to start pneumatic or hydraulic means this moment; the brake shoes 13 of manipulation brake gear 12 is lived brake block 4 toward interior press nip and is got final product; brake process is very quick; effectively save process time; simultaneously, need not to take down workpiece this moment and be put in addition and carry out milling on the milling machine, directly on lathe, can reach the purpose of milling because brake block is caused main shaft and stopped the rotation by the workpiece of main shaft chuck 19 clampings by stopping.This brake and milling process can directly enroll in the numerically controlled lathe program and carry out successively, because workpiece need not to move to milling machine and remeasures the milling distance, turning, milling settle at one go, so the process workpiece can keep degree of precision, simultaneously also simplify manufacturing procedure, increase work efficiency.

Claims

1. numerically controlled lathe head spindle dead-man's device, comprise casing (1), be provided with the main shaft (6) that drives rotation by belt pulley (5) in the casing, this main shaft supporting is subjected on the bearing of axial location in casing (1), be provided with the chuck (19) of the conical surface combination of holding workpiece in main shaft (6) front end, trombone slide (9) in this chuck and the main shaft is connected, the rear end is provided with the push-and-pull trombone slide and moves axially the push-pull mechanism of realizing that chuck clamps, it is characterized in that described lathe spindle (6) is provided with and the fixing brake block (4) of belt pulley, this brake block is positioned between the brake shoes (13) of the brake gear (12) that is subjected to pneumatic equipment or hydraulic test control.

2. numerically controlled lathe head spindle dead-man's device according to claim 1, the axial location that it is characterized in that described bearing comprises the preceding stifle (18) and the preceding back-up ring (21) of axial location fore bearing (20); The back stifle (2) of axial location rear bearing (24), back back-up ring (23) and degree of tightness nut (22).

3. numerically controlled lathe head spindle dead-man's device according to claim 1, it is characterized in that described push-pull mechanism comprises the umbrella crown (8) that is connected trombone slide (9) rear end, be fixed with the three-jaw (7) of push-and-pull umbrella crown (8) on the main shaft (6) and adjacent to the associating device (10) of three-jaw.

4. numerically controlled lathe head spindle dead-man's device according to claim 1 is characterized in that described brake gear (12) is installed on the guide pillar (16) that operates in vertically in the mount pad (15), and mount pad and case lid (17) are fixing.