CN201338203Y

CN201338203Y - Duplex-bearing fixed structure of horizontal numeral control boring and milling machine

Info

Publication number: CN201338203Y
Application number: CNU2009200039519U
Authority: CN
Inventors: 张巨龙
Original assignee: WUXI DIVINE MACHINERY CO Ltd
Current assignee: WUXI DIVINE MACHINERY CO Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-11-04
Anticipated expiration: 2019-01-21

Abstract

The utility model discloses a duplex-bearing fixed structure of horizontal numeral control boring and milling machine, wherein a bearing pad is added between double bearings, the structure comprises an inner ring and an outer ring, the external diameter of the outer ring is equal to the external diameter of the bearings, the inner diameter of the inner ring is equal to the inner diameter of the bearings, and the width of the bearing pad is equal to the sum of the focuses of the two bearings. The structure has beneficial effects that: after the bearing pad is added, the forcing distribution between the two bearings can be adjusted through the bearing pad, which can enable the bearing of the two bearings to be more uniform, and reduces the requirements of the manufacturing precision of the two bearing, thereby saving the manufacturing cost of products.

Description

Duplex-bearing fixed structure of horizontal type numerical control boring-milling machine

Technical field

The utility model relates to a kind of duplex-bearing fixed structure, specifically a kind of duplex-bearing fixed structure of sleeve of horizontal digital-control boring-milling machine.

Background technology

At present, structure and design that the domestic boring and milling machine equipment of producing is adopted are still introduced from the Soviet Union decades ago.In this field, China does not have autonomous intellectual property fully.As a manufacturing powerhouse, need often to use boring and milling machine in fields such as machining, manufacturings.And the domestic employed high-end boring and milling machine equipment of present China generally all needs from external import.Because we can not produce the boring and milling machine equipment that satisfies domestic production processing needs ourselves, domestic relevant industry development often is limited by external technology like this.Particularly those and the closely bound up field of Defence business need to make high-precision product, have higher requirement for machining equipment.To this, grasp present state-of-the-art in the world technology in the present western developed country hand and having a large amount of intellectual properties, but in order to contain the development of rival and developing country, they are provided with numerous technology barriers for the outlet of these high-end devices.

Reform and open up to the outside world two during the last ten years, China constantly promotes the technical strength of oneself, has all obtained technological break-through and has obtained plentiful and substantial technological achievement in a lot of fields.But for the boring and milling machine apparatus field, by the end of so far, China patent total amount in disclosed this field is no more than 200, wherein at the patent quantity of horizontal boring and milling machine then still less.Simultaneously, we also can find through scrutinizing these disclosed patents, for these patent the insides, more are to carry out local improvement and design at existing boring and milling machine, can't break away from existing technological frame and carry out brand-new design.So up to now, China does not also have particularly horizontal boring and milling machine of boring and milling machine that ability produces complete independent intellectual property right.This is the common problem that the domestic boring and milling machine manufacturing enterprise of China is faced.

In sum, produce a kind of boring and milling machine of complete independent intellectual property right, not only can satisfy domestic production demand, break away from the technology barriers of western countries, also can promote technical research and the innovation of China simultaneously in this field to China.Designing the boring and milling machine of complete independent intellectual property right, is the development strategy needs that are based on whole country, also is the happiness of leaving we descendants for simultaneously.

The utility model is exactly the horizontal digital-control boring-milling machine at complete autonomous Design, the sleeve fixed structure on its top.Generally the fixed form of duplex bearing is that two bearings are installed side by side, and does not stay any slit substantially between two bearings.Such fixed form requires very high to the accuracy of manufacture and the installation accuracy of two bearings.If error is big slightly, will occur a bearing so and drive the problem that another bearing rotates, promptly driven the bearing that rotates and dallied, and the not effect of holding capacity basically of this bearing.At this moment, can cause one of them bearing load-bearing excessive, serious wear, the service life that influence is whole.

The utility model content

The purpose of this utility model provides a kind of main shaft transmission mechanism of horizontal type numerical control boring-milling machine, adopts relative simple mechanism to realize transmission boring bar and sleeve simultaneously.

The purpose of this utility model is to be achieved through the following technical solutions:

Duplex-bearing fixed structure of horizontal type numerical control boring-milling machine adds bearing gasket in the middle of duplex bearing, comprise outer ring and inner ring, and the external diameter of outer ring equals the external diameter of bearing, and the internal diameter of inner ring equals the internal diameter of bearing; The width of bearing gasket equal two bearings focal length and.

The beneficial effects of the utility model are: after adding bearing gasket, adjust stressed distribution between two bearings by bearing gasket, can make the load-bearing of two bearings more even, reduce requirement, so saved the manufacturing cost of product two bearing accuracies of manufacture.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is slide block described in the utility model, boring bar figure;

Fig. 2 is an A place enlarged drawing among Fig. 1.

Among the figure

1, slide block; 2, boring bar; 3, tail pipe; 4, fixed cover; 5, sleeve; 6, duplex bearing; 7, bearing gasket inner ring; 8, bearing gasket outer ring; 9, gear-box.

The specific embodiment

Horizontal digital-control boring-milling machine described in the utility model comprises lathe bed, big column, slide block 1, is installed in fixed cover 4 and gear-box 9 on the slide block 1.

With reference to figure 1, be the slide block 1 of horizontal digital-control boring-milling machine, the structure chart of boring bar 2, gear-box 9 is connected with motor, gear-box 9 is connected with tail pipe 3 simultaneously, the inside of fixed cover 4 is equipped with sleeve 5, inside at sleeve 5 and tail pipe 3 is equipped with boring bar 2, and motor drives boring bar 2 and sleeve 5 runnings simultaneously by the reduction gearing in the driven gear case 9.

With reference to figure 2, duplex-bearing fixed structure of horizontal type numerical control boring-milling machine is installed between the sleeve 5 and fixed cover 4 of horizontal digital-control boring-milling machine, in the middle of duplex bearing 6, add bearing gasket 7,8, comprise outer ring 8 and inner ring 7, the external diameter of outer ring 8 equals the external diameter of bearing, and the internal diameter of inner ring 7 equals the internal diameter of bearing; The width of bearing gasket 7,8 equal two bearings focal length and.

The beneficial effects of the utility model are: after adding bearing gasket, adjust two bearings by bearing gasket Between bearing distribution, can make the load-bearing of two bearings more even, reduced two bearing accuracies of manufacture Requirement, so saved the manufacturing cost of product.

For duplex bearing fixed form described in the utility model, its application is not limited to horizontal digital-control boring-milling machine Equipment can solve identical problem for other equipment of using duplex bearing.

Claims

1, duplex-bearing fixed structure of horizontal type numerical control boring-milling machine is characterized in that, adds bearing gasket in the middle of duplex bearing.

2, duplex-bearing fixed structure according to claim 1 is characterized in that, described bearing gasket comprises outer ring and inner ring, and the external diameter of outer ring equals the external diameter of bearing, and the internal diameter of inner ring equals the internal diameter of bearing.

3, duplex-bearing fixed structure according to claim 2 is characterized in that, the width of bearing gasket equal two bearings focal length and.