KR101876002B1

KR101876002B1 - Power Chuck For Lathe

Info

Publication number: KR101876002B1
Application number: KR1020150159943A
Authority: KR
Inventors: 김태진
Original assignee: 현대자동차주식회사
Priority date: 2015-11-13
Filing date: 2015-11-13
Publication date: 2018-07-06
Also published as: KR20170056359A

Abstract

A power chuck for a lathe comprising a locator mounted on a spindle of a lathe and a chuck for moving the locator in a circumferential direction and grasping a workpiece, wherein the workpiece is provided with different outer diameters, The present invention relates to a power chuck for a lathe having a grasping portion for grasping a workpiece by selectively contacting an inner circumferential surface and an end surface depending on the shape of the work.

Description

{Power Chuck For Lathe}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power chuck for a lathe, and more particularly to a power chuck for a lathe which can be held without changing the chuck depending on the outer diameter of the work.

Generally, in a work using a lathe as a machine tool, a workpiece fixed to the chuck is rotated by the rotational force of the machine tool while the predetermined workpiece is rigidly held by a chuck fixed to the tip of the main shaft of the lathe, Perform machining operations.

In addition, the grasping portion of the jaw was cut and machined by a lathe or the like in accordance with the size of the workpiece according to the outer diameter of the workpiece. In addition, there is a problem in that the spool is used in accordance with the outer diameter of the workpiece.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power chuck for a lathe that prevents the occurrence of a chuck replacement due to a difference in outer diameter of a workpiece and prevents interference with surrounding components during loading of a molded workpiece.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a power chuck for a lathe, comprising: a locator installed on a spindle of a lathe; and a power chuck for a lathe which is moved in a circumferential direction to hold the work, Wherein the workpiece has different outer diameters and the chuck assembly has a first stepped portion for selectively grasping the workpiece by selectively contacting the inner circumferential surface and the end surface depending on the shape of the workpiece.

Further, the locator extends in the longitudinal direction of the chuck to form a locator pad, and the locator pad is provided with a second stepped portion for fixing the workpiece at the longitudinal end thereof.

In addition, the locator pads may be formed with a plurality of spaced apart, and the chuck may be moved between the spaced apart locator pads.

The gantry loader may further include a gantry loader for loading or unloading the workpiece into or from the locator, wherein the locator is provided with a center rod for pushing the workpiece toward the center axis when the workpiece is loaded by the gantry loader.

The details of other embodiments are included in the detailed description and drawings.

According to the power chuck of the present invention, one or more of the following effects can be obtained.

First, according to the lathe power chuck of the present invention, it is not necessary to replace the spool according to the outer diameter difference of the workpiece, thereby shortening the process and improving the convenience.

Second, according to the lathe power chuck of the present invention, it is possible to perform ejection when the workpiece is loaded through the gantry loader, thereby enabling loading without intervention of peripheral parts.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a power chuck for a lathe according to the present invention.
Figs. 2 and 3 are side views in which different workpieces are grasped. Fig.
4A and 4B are side views showing the operation of the ejector of the workpiece by the center bar.
5 is a side view showing the gripping positions of the locator and the chuck according to different workpieces.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a power chuck for a lathe according to embodiments of the present invention.

FIG. 1 is a perspective view showing a power chuck for a lathe according to the present invention, FIGS. 2 and 3 are side views of gripping different workpieces, FIGS. 4A and 4B are side views showing operation of a workpiece ejector by a center rod And Fig. 5 is a side view showing the gripping positions of the locator and the chuck according to different workpieces.

A preferred power chuck for a lathe of a vehicle can be modified by a person skilled in the art, and in this embodiment is a power chuck for a lathe.

FIG. 1 is a perspective view showing a power chuck for a lathe according to the present invention, and FIGS. 2 and 3 are side views in which different workpieces are grasped.

1 to 3, a power chuck for a lathe according to the present invention includes a locator 10 installed on a spindle of a lathe and a workpiece 1 moving in a circumferential direction on the locator 10, The workpieces 1 and 5 are provided so as to have different outer diameters and the sprinkles 30 and 40 are formed in the shape of the workpieces 1 and 5 according to the shape of the workpieces 1 and 5 The first step portion 45 is formed so that the workpiece is gripped by selectively contacting the inner circumferential surface and the end surface.

Hereinafter, the workpiece will not be confused with the first workpiece 1 according to the present invention and the second workpiece 5 with the kappa engine. The flange and the pulley outer diameters of the nuo engine and the kappa engine are formed differently from each other.

The locator 10 is mounted on the spindle of the lathe. The locator 10 extends in the longitudinal direction of the spars 30 and 40 to form a locator pad 20 and the locator pad 20 is provided with a second step 25 for securing the workpiece to its longitudinal end . The locator 10 may be provided with a work guide for guiding the work 1, 5 on its outer periphery so as to be centered.

A plurality of locator pads 20 are formed spaced apart in the circumferential direction. The skewers 30 and 40 move between the spacers of the locator pads 20.

More specifically, the locator pads 20 are formed spaced apart in the circumferential direction of the locator 10 and protrude in the axial direction of the locator 10. The locator pad 20 is formed with the second step 25 in the chord direction. The second step 25 is formed with a first end face 25a that is an end of the locator pad 20 and a second end face 25b that is stepped away from the first end face 25a. The end face of the second work 5 is brought into contact with the first retracted surface 45a of the spine 30 or 40 to be described later on the first end face 25a and the second end face 25b of the first work It is possible to selectively fix the workpieces of different shapes, that is, the nuo engine and the kappa engine, when the end faces of the first and second workpieces 1 and 1 are in contact with the inner peripheral surface of the first and second workpieces 30 and 40 have.

The spigots 30 and 40 move in the radial direction of the locator 10 and grasp the workpieces 1 and 5 and separate them from the workpieces 1 and 5. The spools 30 and 40 are separated from the workpieces 1 and 5 by grasping the workpieces 1 and 5 by moving the hydraulic cylinders not shown so as to be movable in the radial direction of the locator 10. Spats 30 and 40 are installed in locator 10 to move between spaced apart locator pads 20.

More specifically, the spools 30 and 40 include a bath main body 30 installed to be moved in the radial direction of the locator 10, and a grip portion 40 for gripping the workpieces 1 and 5. The grip portion (40) is formed with a first step portion (45) in the axial direction of the locator (10). The first stepped portion 45 is formed with a first gripping surface 45a formed at the end of the grip portion 40 and a second gripping surface 45b stepped from the first gripping surface 45a. When the end face (flange or pulley) of the second workpiece 5 is contacted to the second end face 25b, the outer peripheral face 5a of the second workpiece contacts the second retracted face 45b of the springs 30, 40 Lt; / RTI >

4A and 4B are side views showing the operation of the ejector of the workpiece by the center bar.

4A and 4B, the center bar 50 is provided on the locator 10 to push the workpieces 1, 5 in the direction of the center axis. The center bar 50 is loaded by the gantry loader to push the workpieces 1, 5 in the axial direction after shaping to prevent interference from the sprigs 30, 40.

On the other hand, the work pushed by the center bar 50 is the second work 5. The second workpiece is brought into contact with the second gripping surface 45b of the springs 30 and 40 so that the second workpiece is hooked by the springs 30 and 40 when vertically loaded by the gantry loader. In the axial direction of the locator 10, and then loaded into the gantry loader.

Here, the gantry loader (not shown) is a device for loading or unloading the workpiece to / from the locator 10, and a transfer device for vertically or laterally transferring the gantry loader (not shown) and the vertical rail frame and the horizontal rail frame Is a technique known to those skilled in the art.

The operation of the power chuck for a lathe according to a preferred embodiment of the present invention will be described.

FIG. 1 is a perspective view showing a power chuck for a lathe according to the present invention, FIGS. 4A and 4B are side views showing operation of an ejector of a work by a center rod, FIG. 5 is a perspective view showing a gripping position Fig.

The first workpiece 1 is held by the locator 10, and the second workpiece 1 is held by the first workpiece 1, And is fixed in the longitudinal direction by the locator (10).

The first workpiece 1 is fixed to the locator 10 and the first workpiece 1 is centered by the workpiece and the first workpiece 1 flange 1a is formed on the third end face 25a of the locator pad, . At this time, the grip portion 40 passes between the spaced apart locator pads 25 and moves to the center axis of the locator 10, and the outer peripheral surface of the first workpiece flange 1a contacts the inner peripheral surface 45a of the chuck, As shown in Fig. Next, the gripper 40 separates the first workpiece 1 in the reverse order in which the first workpiece 1 is grasped.

On the other hand, when the grip portion 40 is separated from the first workpiece 1, the center rod 50 pushes the first workpiece 1 in the axial direction to separate the first workpiece 1 from the locator 10 , The first workpiece 1 can be transferred by the gantry loader without intervention of the gripper 40.

Next, the case where the second workpiece 5 is grasped will be described. The second workpiece 5 is moved in the center axis of the locator 10 and is fixed in the longitudinal direction by the locator 10.

The second workpiece 5 is fixed to the locator 10 and the second workpiece 5 is centered by the workpiece guide and the fourth end face 25b of the locator pad 25 is fixed to the second workpiece 5 flange (5a). At this time, the grip portion 40 passes between the spaced apart locator pads 25 and moves to the center axis of the locator 10, and the outer peripheral surface of the second work flange 5a contacts the inner peripheral surface 45b of the chuck, As shown in Fig. Next, the gripper 40 separates the second workpiece 5 in the reverse order in which the second workpiece 5 is grasped.

On the other hand, when the grip portion 40 is separated from the second workpiece 5, the center rod 50 pushes the second workpiece 5 in the axial direction to separate the second workpiece 5 from the locator 10 , The second workpiece 5 can be transferred by the gantry loader without intervention of the gripper portion 40.

According to the above-described power chuck of the present invention, it is not necessary to replace the spool according to the difference in outer diameter of the workpiece, thereby shortening the process time and improving the convenience. The workpiece is ejected through the gantry loader, There is an effect of loading without interference.

The configuration and the method of the embodiments described above can be applied to a lathe power chuck according to an embodiment of the present invention in a limited manner so that all or some of the embodiments may be selectively And may be configured in combination.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention.

<Detailed Description of Main Drawings>
1: 1st workpiece 5: 2nd workpiece
10: Locator 20: Locator pad
30, 40: Screw 50: Center rod

Claims

A power chuck for a lathe comprising: a locator mounted on a spindle of a lathe; and a chuck that moves circumferentially in the locator and grasps the workpiece,
The workpiece is provided so as to have different outer diameters,
Wherein the chuck assembly includes a grip portion for selectively grasping the workpiece by contacting the different outer diameters in accordance with the shape of the workpiece, a first stepped portion for holding the workpiece in contact with the workpiece is formed,
The locator comprises:
A locator pad is formed extending in the longitudinal direction of the chuck,
In the locator pad,
And a second step portion for fixing the workpiece to the end portion in the longitudinal direction.

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The method according to claim 1,
The locator pad may include:
A plurality of spaced apart forming chuck shafts spaced apart from the locator pads.

The method according to claim 1,
Further comprising a gantry loader for loading or unloading the workpiece into the locator,
In the locator,
And a center bar for pushing the workpiece toward the center axis when the workpiece is loaded by the gantry loader.

A locator mounted on the spindle of the lathe
And a spindle which moves in the circumferential direction to grip the workpiece,
The chuck assembly includes a grip portion that moves in the radial direction in the spine and grasps the workpiece. The grip portion is formed with a first step portion, which is in contact with the workpiece to grip the workpiece,
Wherein the locator is formed with a locator pad extending in an axial direction of the locator and provided with a second blocking portion for securing the workpiece,
Wherein the chuck assembly is selectively gripped by the gripper and the locator pads according to the shape of the workpiece.

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