CN206732174U

CN206732174U - Swollen fixture in one kind

Info

Publication number: CN206732174U
Application number: CN201720458564.9U
Authority: CN
Inventors: 尹文波
Original assignee: Chongqing City Chi Zheng Machinery Co Ltd
Current assignee: Chongqing City Chi Zheng Machinery Co Ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2017-12-12
Anticipated expiration: 2027-04-27

Abstract

The utility model discloses swollen fixture in one kind, including jig main body and expansion sleeve；The jig main body includes the first clamp shaft and the second clamp shaft；First clamp shaft and the second clamp shaft are arranged concentrically；First clamp shaft and the second clamp shaft are connected by screw and form a circular cavity；Upper end is provided with a piston in the circular cavity that first clamp shaft and the second clamp shaft are formed, and its lower end is provided with the first sealed steel ball；Center line is provided with manhole to second clamp shaft vertically, and one end away from first clamp shaft is provided with the second sealed steel ball in the manhole；The expansion sleeve is socketed on the one end of second clamp shaft away from first clamp shaft.The characteristics of the utility model is with that can avoid thin-wall workpiece from deforming, while improve processing efficiency.

Description

Swollen fixture in one kind

Technical field

The utility model belongs to machining equipment technical field, and in particular to swollen fixture in one kind.

Background technology

Fixture is for fixing processing object, processing object is in accurate position, to connect during machine-building The device constructed or detected, also referred to as fixture.The quality of jig Design has also just directly influenced the processing of processing object Efficiency and machining accuracy, higher want is proposed especially for design of the higher processing object of requirement on machining accuracy to fixture Ask.Prior art generally utilizes the cylindrical turning endoporus or increase work of scroll chuck folder thin-wall workpiece when processing thin-wall workpiece Skill rib workpieces processing is cylindrical, but due to thin-wall workpiece (thin-wall workpiece especially below wall thickness 5mm) poor rigidity itself, it is processed Process easily deforms, and particularly, there is following defect using prior art as manufacturing process：1st, the deformation of workpiece in itself can influence The dimensional accuracy and form accuracy of workpiece, increase technique rib can greatly increase the difficulty of cutting endoporus；2nd, because workpiece wall is more thinly-sliced Workpiece thermal deformation can be caused by cutting heat, be difficult to control workpiece size；3rd, in the presence of cutting force in particular back force, easily produce Raw vibration, noise and deformation, directly affect dimensional accuracy, the form and position tolerance of workpiece, and surface roughness.

Therefore, those skilled in the art, which are directed to design one kind, to avoid thin-wall workpiece from deforming, while improve processing effect The interior swollen fixture of rate overcomes the above-mentioned problems in the prior art, has weight to improving operating efficiency, reducing production cost Big meaning.

Utility model content

The utility model for prior art clamping process it is cumbersome, clamping deformation is big the defects of provide swollen folder in one kind Tool.

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

Swollen fixture in one kind, including jig main body and expansion sleeve；The jig main body includes the first clamp shaft and the second folder Has axle；First clamp shaft and the second clamp shaft are arranged concentrically；First clamp shaft and the second clamp shaft are connected by screw Connect and form a circular cavity；Upper end is provided with one in the circular cavity that first clamp shaft and the second clamp shaft are formed Piston, its lower end are provided with the first sealed steel ball；Center line is provided with manhole, the circle to second clamp shaft vertically One end away from first clamp shaft is provided with the second sealed steel ball in shape through hole；The expansion sleeve is socketed on second folder Has the one end of axle away from first clamp shaft.

Further, the deflection of thin-wall workpiece to be processed is caused to increase in order to prevent pressure excessive, the circular cavity Diameter be more than the manhole diameter；The diameter of first sealed steel ball is more than the straight of second sealed steel ball Footpath.

Further, first clamp shaft and second clamp shaft are formed in one.

Compared with prior art, the utility model at least has advantages below：

Interior swollen fixture of the present utility model, circular cavity, the second fixture are formed by the first clamp shaft and the second clamp shaft Axle longitudinal center line sets manhole, and expansion sleeve is socketed in the second clamp shaft, after being full of hydraulic oil in circular cavity, Increase cavity pressure by compression piston, so that the second clamp shaft deforms, further make expansion sleeve swelling to be processed Workpiece, workpiece to be processed is clamped with the cylindrical mode of the prior art by scroll chuck folder thin-wall workpiece, is avoided Because workpiece wall is thin, the workpiece deflection occurred from cylindrical clamping is serious, so as to avoid the processing occurred by workpiece deformation Dimensional accuracy, the form and position tolerance of workpiece, and the problem of surface roughness does not reach requirement；Meanwhile clamping process is also easier Fast, operating efficiency is improved.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the structural representation of interior swollen fixture of the present utility model.

Description of reference numerals：1- jig main bodies；The clamp shafts of 11- first；11a- circular cavities；The clamp shafts of 12- second；12a- Manhole；2- expansion sleeves；3- screws；4- pistons；The sealed steel balls of 5- first；The sealed steel balls of 6- second；7- thin-walled works to be processed Part.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all Embodiment.

Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as When the fruit particular pose changes, then directionality instruction also correspondingly changes therewith.

In the utility model such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", At least one this feature can be expressed or be implicitly included to the feature of " second ".

In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise It is clearly specific to limit.

In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used Be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals Or the interaction relationship of two elements, limited unless otherwise clear and definite.For the ordinary skill in the art, can be with Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.

In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of this technical scheme is not present, also not within the protection domain of the requires of the utility model.

As shown in figure 1, swollen fixture in one kind, including jig main body 1 and expansion sleeve 2；The jig main body 1 includes the first folder Has the clamp shaft 12 of axle 11 and second；The clamp shaft 12 of first clamp shaft 11 and second is arranged concentrically；First clamp shaft 11 Connected with the axle of the second fixture 12 by screw 3 and form a circular cavity 11a；The clamp shaft of first clamp shaft 11 and second Upper end is provided with a piston 4 in the 12 circular cavity 11a formed, and its lower end is provided with the first sealed steel ball 5；Second folder Center line is provided with one away from first clamp shaft 11 in manhole 12a, shown manhole 12a to tool axle 12 vertically End is provided with the second sealed steel ball 6；The expansion sleeve 2 is socketed on second clamp shaft 12 away from first clamp shaft 11 One end.

Preferably, the deflection of thin-wall workpiece to be processed is caused to increase in order to prevent pressure excessive, the circular cavity 11a diameter is more than the diameter of the manhole 12a；The diameter of first sealed steel ball 5 is more than the described second sealing steel The diameter of ball 6.

Preferably, first clamp shaft 11 and second clamp shaft 12 are formed in one.

The course of work of interior swollen fixture of the present utility model is as follows：

In use, hydraulic oil will be full of in circular cavity, thin-wall workpiece to be processed is enclosed on expansion sleeve, given by piston Hydraulic oil pressurization in circular cavity, increases the pressure in the manhole of the second fixture axis center, so that the second fixture Axle deforms, and further makes expansion sleeve swelling workpiece to be processed.

More than, the only preferable embodiment of the utility model, but the protection domain of utility model is not limited to This, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with right The protection domain of claim is defined.

Claims

1. swollen fixture in one kind, it is characterised in that including jig main body and expansion sleeve；The jig main body includes the first clamp shaft With the second clamp shaft；First clamp shaft and the second clamp shaft are arranged concentrically；First clamp shaft and the second clamp shaft are led to Cross mode connects for screw and form a circular cavity；Upper end is set in the circular cavity that first clamp shaft and the second clamp shaft are formed A piston is equipped with, its lower end is provided with the first sealed steel ball；Center line is provided with circular lead to second clamp shaft vertically Hole, one end away from first clamp shaft is provided with the second sealed steel ball in the manhole；The expansion sleeve is socketed on The one end of second clamp shaft away from first clamp shaft.

2. interior swollen fixture according to claim 1, it is characterised in that the diameter of the circular cavity is more than described circular logical The diameter in hole；The diameter of first sealed steel ball is more than the diameter of second sealed steel ball.

3. interior swollen fixture according to claim 1, it is characterised in that first clamp shaft and second clamp shaft are equal It is formed in one.