CN201342496Y

CN201342496Y - Oscillating lathe carrier

Info

Publication number: CN201342496Y
Application number: CNU2008201842350U
Authority: CN
Inventors: 张明雄; 徐美瑛
Original assignee: YICHUAN TEKKO CO Ltd
Current assignee: YICHUAN TEKKO CO Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-11-11
Anticipated expiration: 2018-12-29

Abstract

The utility model relates to an oscillating lathe carrier, which comprises a body, a bushing, a pull rod, a plurality of ball seats, a plurality of main claws, a spring and at least one ejector pin, wherein shaft holes penetrating the body and a plurality of through holes communicated with the shaft holes are formed in the center of one end surface of the body; the bushing is provided with a combining part, an accommodating part, and a first punch hole penetrating the combining part and the accommodating part, and ditches are formed in the opposite positions of the body on the accommodating part respectively; the pull rod is arranged in the shaft hole, and can slide back and forth in the axial position of the body relative to the body; the ball seats are pivoted with the pull rod and provided with a second punch hole; the main claws can be defined to form a guide part, a spherical part and a pushing part, wherein the spherical part are provided with a second punch hole, the propping part is used for pushing workpieces, and an acute included angle is formed by the division surface of the pushing part and the spherical part as well as the shaft center of the guide part; the spring is arranged in a third punch hole of each spherical part; at least one ejector pin is arranged in the third punch hole respectively. Therefore, the utility model can reduce the sloshing of the workpieces under the action of external force, limit the rotating range of the main claws, and reduce the risk of injury to personnel.

Description

Swing lathe dog

Technical field

The utility model is relevant with Workpiece clamping device, is meant a kind of swing lathe dog of machine-tool especially.

Background technology

Traditional swing lathe dog consists predominantly of a body, it is the perforation that the center is radial arrangement with the axis hole that body has an axis hole that wears for workpiece to be processed and three, wherein the axis hole of body can be installed with for a transmission mechanism (as pull bar), and each perforation of body then is provided with the ball-type faying face and can be installed with for anchor clamps.Each anchor clamps can be subjected to transmission mechanism transmission and in each chute along radially the moving of body, in order to clamping workpiece to be processed towards axis hole.

Yet, at the set ball-type faying face of each perforation, do not limit the slewing area of its anchor clamps, when holding workpiece, easily work in-process is subjected to making anchor clamps produce under the situation of external force effect and rocks, when carrying out machining, be easy to cause a part of workpiece excessively to be cut, a part of workpiece is the cutting output deficiency then, not only influences machining accuracy, also can cause the waste of material, the possibility that even more serious is allows workpiece have to come off.Above-mentioned situation also forms the dangerous operation environment easily except causing the inconvenience of user when the operation element machine tool, increases the worker and pacifies the unexpected chance that takes place.

Summary of the invention

At the problems referred to above, main purpose of the present utility model is to provide a kind of swing lathe dog, and it can alleviate when workpiece is subjected to external force does rocking of time spent anchor clamps.

Another purpose of the present utility model is to provide a kind of swing lathe dog, and it can limit the scope that anchor clamps rotate, the situation of avoiding workpiece to come off from swing lathe dog.

For achieving the above object, the utility model provides a kind of swing lathe dog, it is characterized in that comprising: a body, be cylindric, and the center of one end has one and runs through the axis hole of described body and a plurality of perforations that are communicated with described axis hole; Described body forms bearing and leaning portion on the hole wall of each described perforation; One lining has a joint portion and a holding part; Described joint portion is locked in described bearing and leaning portion; Described lining has one first perforation, and described first perforation runs through described joint portion and described holding part; The relative position of described body on described holding part forms a ditch respectively; One pull bar is located in the described axis hole, can be with respect to described body in the past polyslip of the axial location of described body; A plurality of ball seats articulate described pull bar, and described ball seat has one second perforation; A plurality of axial prongs can define a guidance part, a sphere portion and a top in regular turn, and described guidance part is being located in described second perforation toward the mode of polyslip in described second perforation; Described axial prong has the 3rd perforation that connects described sphere portion in described sphere portion, and described sphere portion is articulated in described first perforation; Described top is used to replace workpiece, and the axle center of the interface of described top and described sphere portion and described guidance part is the angle of an acute angle; One spring is arranged in the 3rd perforation of each described sphere portion; At least one ejector pin is located at respectively in described the 3rd perforation, and an end of described ejector pin is replaced described spring, and the other end passes the described ditch of described the 3rd perforation clip.

In the above-mentioned the technical solution of the utility model, described ejector pin quantity is two, and the corresponding described ditch profile of described each ejector pin one end forms a tapered end, and described each tapered end is stretched out the described ditch of described the 3rd outer clip of perforation, described each ejector pin other end is a free end, replaces described spring.

In the above-mentioned the technical solution of the utility model, the hole wall of described first perforation is a sphere; Described sphere portion has a spherical surface, and described sphere portion is articulated in described first perforation, and the spherical surface of described sphere portion is in conjunction with described hole wall.

In the above-mentioned the technical solution of the utility model, each described ejector pin is in conjunction with the hole depth of the total length of described spring under maximum compressibility greater than described the 3rd perforation.

In the above-mentioned the technical solution of the utility model, axial and described first perforation of described the 3rd perforation is axially vertical mutually.

Adopt technique scheme, the utility model can be seized the workpiece that desire is processed on both sides by the arms when the user operates this swing lathe dog, as in the workpiece cutting process because of the external force effect application of force at workpiece, also prevent the workpiece reduction operation personnel dangerous target of catching cold that comes off because of the anchor clamps of this chuck opposing external force and slewing area limit to reach to some extent.

Description of drawings

Fig. 1 is the front view of the utility model one preferred embodiment;

Fig. 2 is the three-dimensional exploded view of the utility model one preferred embodiment;

Fig. 3 is the lining rearview of the utility model one preferred embodiment;

Fig. 4 is the profile of 4-4 hatching among Fig. 3;

Fig. 5 is the profile of 5-5 hatching among Fig. 1;

Fig. 6 is the profile of 6-6 hatching among Fig. 5, shows that ejector pin was positioned at ditch when axial prong did not rotate as yet;

Fig. 7 shows that axial prong rotates the relative position of ejector pin and ditch.

The specific embodiment

In order to describe structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.

As Fig. 1～shown in Figure 5, swing lathe dog provided by the utility model consists predominantly of: a body 10, be cylindric, the center of one end has three perforations 12 that run through the axis hole 11 of body 10 and be positioned at end face, and the axis hole 11 in each perforation 12 and the body 10 is connected; Body 10 forms a bearing and leaning portion 13 on the hole wall of each perforation 12, each perforation 12 is radial arrangement outside axis hole 11.

As shown in Figure 3, Figure 4, a lining 20 generally is a stepped cylinder, has a joint portion 21 and a holding part 22, and joint portion 21 is locked on the bearing and leaning portion 13 in the perforation 12, and holding part 22 is connected with joint portion 21.Lining 20 has one first perforation 23, first perforation 23 runs through joint portion 21 and holding part 22, and the hole wall 231 of first perforation 23 is a sphere, and the relative 180 degree positions of lining 20 on holding part 22 form a ditch 24 respectively, and each ditch 24 is communicated with the periphery wall of first perforation 23 and holding part 22.

One pull bar 30, be located in the axis hole 11, be connected with the output shaft (not shown) of the oil hydraulic cylinder of machine-tool, make drive that pull bar 30 can be subjected to above-mentioned output shaft in the axis hole 11 of body 10 with respect to the axial location of body 10 toward polyslip, pull bar 30 is three trepannings 31 that are arranged with of radial arrangement, and is corresponding up and down with three perforations 12 on the body 10.

Three ball seats 40 (only presenting one group among Fig. 2), each ball seat 40 is articulated in respectively in the trepanning 31 of pull bar 30, and each ball seat 40 has one second perforation 41 that is corresponding connection up and down with first perforation 23.

Three axial prongs 50 (only presenting one group among Fig. 2), each axial prong 50 can define a guidance part 51, a sphere portion 52 and a top 53 in regular turn, and guidance part 51 is column, being located at toward the mode of polyslip in second perforation 41 of ball seat 40 in second perforation 41.Sphere portion 52 has a spherical surface, and each axial prong 50 has the 3rd of a perforation sphere portion 52 in sphere portion 52 and bores a hole 54, and axial and first perforation 23 of the 3rd perforation 54 is axial mutual vertical.Sphere portion 52 is in first perforation 23 that is articulated in lining 20, and the spherical surface of sphere portion 52 is in conjunction with hole wall 231.Top 53 is used for the contact workpiece, and the interface of top 53 and sphere portion 52 and the axle center of guidance part 51 are the angle of an acute angle.

One spring 60 is arranged in the 3rd perforation 54 of each sphere portion 52.

Two ejector pins 70, the profile of the corresponding ditch 24 of each ejector pin 70 1 end forms tapered end 71, and the other end is a free end 72.Each ejector pin 70 is installed in respectively in the 3rd perforation 54, and the free end 72 of each ejector pin 70 is replaced spring 60, and tapered end 71 is stretched out the 3rd perforation 54 outer clip ditches 24.

In this mandatory declaration is that each ejector pin 70 greater than the 3rd perforation 54 hole depth, makes each ejector pin 70 stretch out the outer and clip ditch 24 of the 3rd perforation 54 in conjunction with the total length of spring 60 under maximum compressibility.In addition, the quantity of the lining of being mentioned in the foregoing description 20, ball seat 40, axial prong 50, spring 60 and ejector pin 70 is one group of external member, when practice, need two groups of above-mentioned external members just can seize workpiece on both sides by the arms at least, certainly, need if there is something special, the number of external member can be three groups of external members or four groups and above external member.

As shown in Figure 5, by said structure as can be known, use swing lathe dog of the present utility model to seize on both sides by the arms in the time of will carrying out the workpiece of machining, user's oil hydraulic cylinder (not shown) drive pull bar 30 of control machine-tool earlier moves towards the direction away from axial prong 50 with respect to body 10, the slippage that guidance part by ball seat 40 and axial prong 50 is 51 drives, make top 53 to direction swing near body 10 axle center, the workpiece (not shown) that then will process is mounted on the scope of activities of top 53, the oil hydraulic cylinder of controlling aforementioned machine-tool again drives pull bar 30 and moves towards the direction near axial prong 50 relative to body 10, and then workpiece is replaced in driving top 53.If want holding workpiece, then only need the above-mentioned opposite program of utilization to get final product.

As shown in Figure 6, when workpiece contacts with top 53, when the moment of torsion that does not also force in axial prong 50 produced, the ejector pin 70 that is positioned at the 3rd perforation 54 was subjected to the thrust of spring 60, and the tapered end 71 of each ejector pin 70 is each ditch 24 of driving fit respectively.As shown in Figure 7, produce when forcing in the moment of torsion of axial prong 50 when workpiece contacts with top 53, a tapered end 71 that is positioned at the ejector pin 70 of the 3rd perforation 54 will produce and the slippage of ditch 24.The decrement that this slippage meeting increases spring 60 makes the bigger thrust of spring 60 generations resist moment of torsion, keeps the stability that Oil-pressure clamping head of the present utility model is seized workpiece on both sides by the arms, does not produce and rocks.

In addition, the length that said structure can each ejector pin 70 and the length of spring 60 limit the slewing area of axial prong 50, for example under the length of each ejector pin 70 added the situation of length greater than the hole depth of the 3rd perforation 54 under the maximum compressibility of upper spring 60, the rotating range of axial prong 50 will be limited in the anglec of rotation of spring 60 axial prong 50 when maximum compression.53 rotations that can limit within the specific limits in top cooperate seizes workpiece on both sides by the arms.

Thus, when operating swing lathe dog, the user just can reach the purpose of clamping, as in the workpiece cutting process because of the external force effect application of force at workpiece, also reach and prevent that workpiece from coming off, reducing the target of the injured risk of operating personnel because of the slewing area of axial prong 50 is restricted.

Claims

1, a kind of swing lathe dog is characterized in that comprising:

One body is cylindric, and the center of one end has one and runs through the axis hole of described body and a plurality of perforations that are communicated with described axis hole; Described body forms bearing and leaning portion on the hole wall of each described perforation;

One lining has a joint portion and a holding part; Described joint portion is locked in described bearing and leaning portion; Described lining has one first perforation, and described first perforation runs through described joint portion and described holding part; The relative position of described body on described holding part forms a ditch respectively;

One pull bar is located in the described axis hole, can be with respect to described body in the past polyslip of the axial location of described body;

A plurality of ball seats articulate described pull bar, and described ball seat has one second perforation;

A plurality of axial prongs can define a guidance part, a sphere portion and a top in regular turn, and described guidance part is being located in described second perforation toward the mode of polyslip in described second perforation; Described axial prong has the 3rd perforation that connects described sphere portion in described sphere portion, and described sphere portion is articulated in described first perforation; Described top is used to replace workpiece, and the axle center of the interface of described top and described sphere portion and described guidance part is the angle of an acute angle;

One spring is arranged in the 3rd perforation of each described sphere portion;

At least one ejector pin is located at respectively in described the 3rd perforation, and an end of described ejector pin is replaced described spring, and the other end passes the described ditch of described the 3rd perforation clip.

2, swing lathe dog as claimed in claim 1, it is characterized in that: described ejector pin quantity is two, the corresponding described ditch profile of described each ejector pin one end forms a tapered end, described each tapered end is stretched out the described ditch of described the 3rd outer clip of perforation, described each ejector pin other end is a free end, replaces described spring.

3, swing lathe dog as claimed in claim 1 is characterized in that: the hole wall of described first perforation is a sphere; Described sphere portion has a spherical surface, and described sphere portion is articulated in described first perforation, and the spherical surface of described sphere portion is in conjunction with described hole wall.

4, swing lathe dog as claimed in claim 1 is characterized in that: each described ejector pin is in conjunction with the hole depth of the total length of described spring under maximum compressibility greater than described the 3rd perforation.

5, swing lathe dog as claimed in claim 1 is characterized in that: axial and described first perforation of described the 3rd perforation is axially vertical mutually.