CN202239809U

CN202239809U - Drill bush component

Info

Publication number: CN202239809U
Application number: CN2011203382315U
Authority: CN
Inventors: 季明浩; 叶善培; 沈剑; 张会焱
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2012-05-30
Anticipated expiration: 2021-09-09

Abstract

The utility model discloses a drill bush component which comprises a drill bush and a drill bush retaining ring; the drill bush retaining ring is in a circular shape; and the drill bush retaining ring is wrapped on the outer side of the drill bush. According to the drill bush component, the drill bush is pressed into the drill bush retaining ring through the external force application equipment of a hydraulic machine; when the drill bush component is removed, a jig is clamped on a vice of a clamp bed, is knocked by an auxiliary tool, i.e. a copper bar or a wood hammer, so that the drill bush is separated from the retaining ring, and force is prevented from being directly applied on the jig body; and consequently, original installation and removal methods become easy and convenient, and actual processing needs are met. Simultaneously, the dimension of the jig is protected against the impact of knocking.

Description

A kind of drill bushing assembly

Technical field

The utility model relates to the process kit in a kind of machining, particularly a kind of drill bushing assembly.

Background technology

In the machined, especially in the processing of pincers bed, drill jig, drilling plate are the process spare parts of using often.

As depicted in figs. 1 and 2, be example with the drill jig.Usually, with the supporting process kit of drill jig be drill bushing 10, during installation, drill bushing 10 is embedded in the through hole of drill jig 20 after knocking through external force effect (as: wooden mallet, copper hammer etc.), treat that drill bushing 10 is fixing after, drill bit stretches into the processing of holing of drill bushing 10 inner diameter holes.

Drill bushing 10 is as the main accessory of drill jig 20, and the processability loss is bigger, and it is high to change frequency.This is because the inner diameter wall of drill bushing 10 contacts grazing every now and then with the blade of drill bit, causes the damage of inner diameter wall.When the internal diameter size of drill bushing 10 " by constantly enlarging " during, just be necessary to change than big 0.08～0.10mm.

In actual production, drill bushing 20 losses are bigger.This be because:

At first, the drill bit work in-process is often with the inwall grazing of drill bushing 10.Through after a while, the inwall of drill bushing 10 has caused the scraping damage.Internal diameter size is also just bigger than normal.If re-use down, the aperture size and the pitch-row that process have deviation, cause product rejection.

Secondly because the mode of dismounting drill bushing 10 is the same with assembling, all must through as: external force such as wooden mallet, copper hammer are knocked, be embedded in drill jig 20 through holes drill bushing 10 unload withdraw from next.Because grasping, operating personnel's skill differs; Overexert to strike and split drill bushing 10, perhaps due to the drill jig 20 self structure deficiencies, drill bushing 10 installation sites are nearer from drill jig 20 edges; Slightly firmly will make drill jig 20 marginal portions crackings, seriously also can cause drill bushing 10 to be squeezed broken even burst apart.

According to practical experience, reduce drill bushing 10 processabilities or the loss of loading and unloading property, can be through changing drill bushing 10 self structure.This making side means are more flexible, still are that the structural modification of drill jig 20 is all less to drill bushing 10.

If a kind of scheme can be arranged, make drill bushing 10 installation and removal can both be easily, accomplish easily, that will solve original loading and unloading inconvenience effectively, prolongation drill bushing service life.

The utility model content

The technical problem that the utility model will solve provides a kind of drill bushing assembly and solves prior art direct problems such as the accessory loss that causes is big, life-span weak point, difficult installation that contact owing to drill bushing and drill jig when installing and using.

For solving the problems of the technologies described above, the technical scheme of the utility model is following:

A kind of drill bushing assembly comprises drill bushing, also comprises a drill bushing guard ring, and said drill bushing guard ring is an annular, and said drill bushing guard ring is wrapped in the outside of said drill bushing.

Preferably, said drill bushing guard ring is H7/k6 with excessive cooperation between the said drill bushing connection.

Through technique scheme, the beneficial effect of the utility model is:

Therefore the drill bushing assembly has avoided drill bushing to contact with the direct of drill jig through hole because the drill bushing guard ring contacts with the drill jig through hole effectively, prolongs the service life of drill bushing effectively.

In the new construction drill bushing assembled, drill bushing is pressed in the drill bushing guard ring through hydraulic press external force effect equipment.During dismounting drill bushing assembly, drill jig is clipped on the pincers bed bench vice, knocks through aid copper rod or wooden mallet, the realization drill bushing separates with guard ring.Avoid directly firmly at the drill jig body.Make original handling mode become easily convenient like this, meet actual process requirements.Protect the appearance and size of drill jig not receive influence simultaneously because of the effect of knocking.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is a prior art drill bushing structure sketch map.

Fig. 2 is a prior art drill bushing mounting structure sketch map.

Fig. 3 is the utility model mounting structure sketch map.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 3 and shown in Figure 4, a kind of drill bushing assembly of the utility model comprises drill bushing 100 and drill bushing guard ring 200, and said drill bushing guard ring 200 is an annular, and said drill bushing guard ring 200 is wrapped in the outside of said drill bushing 100.

Said drill bushing guard ring 200 is H7/k6 with excessive cooperation between said drill bushing 100 connections.

Said drill bushing guard ring 200 adopts light material Reinforced Nylon 66 to process, so drill bushing assembly total quality greatly alleviates, and nylon intensity is high, and the assembly overall durability improves greatly.Be difficult for seize (axis) during assembling, do not hinder knot (subsides) in press-fiting and close face, can viscous not arranged as metal, scrape and draw (fluffing) phenomenon, can effectively avoid bad phenomenon such as plucking, rake angle.

Reinforced Nylon 66 has following characteristics:

1. low, in light weight, the endurance of proportion, absorption are impacted;

Because quiet, the coefficient of kinetic friction is little, cutting the time has good stable property and self lubricity, machine-shaping easily;

3. assembling easily, wearability and oil resistivity be good.

Reinforced Nylon 66 is than other material long service life, handling ease, and non-corrosive, oil resistance are good.Need not special maintenance behind the finished product, also can place in the open, replacing, convenient disassembly reduce labour intensity.Therefore Reinforced Nylon 66 is industrial nylon products the most frequently used in the manufacturing industry.

The utility model at first is pressed into drill bushing 100 in the drill bushing guard ring 200 through hydraulic press when installing in advance, forms new construction drill bushing assembly; During dismounting drill bushing assembly, drill jig 300 is clipped on the pincers bed bench vice, knocks through aid copper rod or wooden mallet, realization drill bushing 100 separates with drill bushing guard ring 200.

No matter the utility model drill bushing 100 assembles still dismounting and can both avoid direct the contacting of drill bushing 100 with drill jig 300 through holes effectively after forming the drill bushing assembly with drill bushing guard ring 200, prolongs the service life of drill jig effectively.When installation or removal drill bushing 100, need not to change original operating habit.The appearance and size of novel drill bushing component protection drill jig does not receive the influence because of the effect of knocking simultaneously.Meet actual process requirements.

More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. a drill bushing assembly comprises drill bushing, it is characterized in that, also comprises a drill bushing guard ring, and said drill bushing guard ring is an annular, and said drill bushing guard ring is wrapped in the outside of said drill bushing.

2. drill bushing assembly according to claim 1 is characterized in that: said drill bushing guard ring is H7/k6 with excessive cooperation between the said drill bushing connection.