KR101582626B1

KR101582626B1 - Non-hydraulic chucking device for machine tools

Info

Publication number: KR101582626B1
Application number: KR1020140138257A
Authority: KR
Inventors: 박태규
Original assignee: 주식회사 나이스맥
Priority date: 2014-10-14
Filing date: 2014-10-14
Publication date: 2016-01-06

Abstract

The present invention relates to a non-hydraulic chucking device for machine tools. The present invention comprises: a chuck (10) installed on a drive shaft (2) of a machine tool (1) to be clamped or unclamped by forward and backward transfer force of a rod (12); an elastic part (20) installed to maintain a clamping state of the chuck (10) by pressurizing the rod (12) backwardly; and a mill piece part (30) moving forward and backward by an operating part (32) to unclamp the chuck (10) by pressurizing the rod (12) forward. According to the formation and operation, clamping force of the chuck is maintained by elastic force of the elastic part (20) while the mill piece part is temporarily operated to control the present invention in a non-hydraulic method unclamping the chuck, and therefore, equipment is miniaturized, and noise and weight are reduced. Especially, surrounding pollution by oil leakage is prevented to keep a work area clean, and the present invention is able to be driven in a clean room in which temperature, humidity, and indoor pressure are required to be kept constant.

Description

Technical Field [0001] The present invention relates to a non-hydraulic chucking device for machine tools,

The present invention relates to a non-hydraulic chucking apparatus for a machine tool, and more particularly, to a chuck of a machine tool including a lathe, wherein the chuck of the machine tool is controlled in a non-hydraulic manner to reduce the size and noise / weight of the equipment, To a non-hydraulic chucking device for a machine tool in which contamination is prevented in advance.

In general, a machine tool including a general purpose lathe and a CNC lathe is rotated while the tool is being linearly moved, and the cutting tool is clamped. In this case, the workpiece clamping chuck is automatically clamped or clamped And the unclamped specification is required.

Accordingly, when the workpiece is inserted into the collet and the hydraulic cylinder secured to the screw of the clamping nut is moved backward, the collet of the clamping nut inserted into the collar of the collet, The fixture pulls the collet. At this time, the technique of each of the collets is pressed by the tapered cylindrical surface of the chuck main body and shrunk to the inside, and the workpiece can be clamped at this time.

However, since the collet of the chuck body for clamping the workpiece is provided to be operated by the hydraulic cylinder, the hydraulic pressure control device including the hydraulic pump, the hydraulic tank, and the hydraulic cylinder must be additionally provided in the related art, And it was difficult to establish an automated facility that requires installation space and connection with peripheral equipment.

In addition, due to the nature of the hydraulic control device, the hydraulic pump is kept in a constantly driven state, so that the noise pollution at the working site is serious, and the environment is easily contaminated during the oil leakage following the periodical oil change and replenishment work. Which was not able to be operated in a place where cleanliness had to be maintained.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a chuck of a machine tool including a lathe, which is controlled in a non-hydraulic manner to reduce the size and noise / weight of equipment, Preventing the accident The present invention provides a non-hydraulic chucking device for a machine tool capable of being maintained in a clean room and capable of operating in a clean room where particulates, air temperature, humidity,

In order to achieve the above object, a feature of the present invention resides in a chuck (10) provided on a drive shaft (2) of a machine tool (1) and adapted to be clamped or unclamped by a backward feed force of a rod rod (12); An elastic part (20) configured to press the rod (12) in a rearward direction to maintain the chuck (10) in a clamped state; And a mill piece part 30 which is operated in the forward and backward directions by the driving part 32 so that the chuck 10 is unclamped by pressing the rod rod 12 in all directions.

The chuck 10 includes a plurality of elastic pieces 14 connected to the rod 12 while the tank 11 is installed, a housing 16 in which the elastic pieces 14 are accommodated, elastic pieces 14 The inclined surface 18 is provided at a position corresponding to the resilient piece 14 and the housing 16 so that the tub 11 is clamped and operated in the rearward direction.

The elastic part 20 is provided with a plurality of springs 22 and one end of the spring 22 is supported by the body of the machine tool 1 or the drive shaft 2 and the other end is installed together with the bearing 24 And to press the rod rod (12) in the backward direction.

The other end of the rod portion 30 is moved forward and backward by a driving portion 32 including a motor and a cylinder so that the rod portion 12 is moved in the forward direction And is conveyed.

The hinge 34 of the mill part 30 is provided on an extension bar 35 which is adjustable in length in the main body of the machine tool 1 and which is connected to the hinge 34, And the end position is adjusted.

According to the above construction and operation, the clamping operating force of the chuck is maintained by the elastic force of the elastic portion, and the milled portion is temporarily operated to control the chuck in a non-hydraulic manner in which the chuck is unclamped, , Especially pollution caused by oil leakage is prevented, It is possible to operate in a clean room in which the particulates, the temperature and humidity of the air, the indoor pressure and the like must be kept constant.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general view showing a non-hydraulic chucking device for a machine tool according to the present invention; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-hydraulic chucking device for a machine tool,
3 is a schematic view showing a chucking and unclamping operation state of a hydraulic chucking apparatus for a machine tool according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a non-hydraulic chucking apparatus for a machine tool, wherein a chuck of a machine tool including a lathe is operated in a non-hydraulic manner to reduce the size of the equipment, reduce noise and weight, The elastic part 20, and the mill part 30 so as to prevent the contamination of the periphery due to the chuck 10, the elastic part 20, and the mill part 30.

The chuck 10 according to the present invention is provided on the drive shaft 2 of the machine tool 1 and is adapted to be clamped or unclamped by the forward and backward force of the rod 12. 1, the chuck 10 is applied to a small-sized CNC lathe. However, the present invention is not limited to this, and is applicable to a machine tool in which a workpiece including a general-purpose lathe is rotated while being cut.

The chuck 10 is connected to the drive shaft 2 so that the workpiece A is rotated in a clamped state and the drive shaft 2 is rotated and rotated by a power source including a servo- Is adjustably provided.

The drive shaft 2 is formed in a hollow hollow pipe shape so that the rod rod 12 is inserted and the rod rod 12 is moved forward and backward by the elastic portion 20 and the milled portion 30, The chuck 10 is clamped or unclamped while the rod 10 is moved backward by the resilient portion 20 in Fig. 3 , And the work piece (A) is unclampingly operated in the forward direction by the slit piece (30).

On the other hand, the chuck 10 is applied to a method of clamping the outer diameter of the workpiece A from the outside to the inside direction, The elastic portion 20 urges the rod rod 12 in all directions and the rod rod 12 is moved in the backward direction by the mill portion 30 so that the clamping or unclamping It is structurally changeable to operate.

The chuck 10 includes a plurality of elastic pieces 14 connected to the rod 12 while the tank 11 is installed, a housing 16 in which the elastic pieces 14 are accommodated, elastic pieces 14 The inclined surface 18 is provided at a position where the resilient piece 14 and the housing 16 correspond to each other so that the tub 11 is clamped and operated in the rearward direction.

One end of the elastic piece 14 is connected to the rod rod 12 and the other end of the elastic piece 14 is provided with a jaw 11, while the elastic piece 14 is divided into a plurality of pieces and radially spaced from each other. The tank 11 is detachably provided so as to be replaceable in accordance with the shape, size, and clamping position of the work A.

When the rod 12 is transported in the rearward direction, the elastic piece 14 is slid along the inclined surface 18 formed on the inner surface of the housing 16, And the elastic piece 14 is expanded when the rod rod 12 is transferred in all directions, so that the workpiece A is unclamped.

Also, the elastic portion 20 according to the present invention is provided so that the chuck 10 is held in a clamped state by pressing the rod rod 12 backward. The elastic part 20 is provided with a plurality of springs 22 and one end of the spring 22 is supported by the main body or drive shaft 2 of the machine tool 1 and the other end is supported by the rod rod 12 in the rearward direction 2 (a) shows a state in which the other end of the spring 22 is supported by a fixing nut 22a provided on the rod rod 12, and FIGS. 2 (b) and 2 (c) The other end of the spring 22 is pressed against the bearing 24 provided on the rod rod 12 and the inner ring of the bearing 24 is stopped by a stopper (washer, nut) 22b provided at the end of the rod rod 12 So that the resilient force of the spring 22 is transmitted to the rod rod 12 through the bearing 24. At this time, the bearing 24 is waiting to be accommodated in the cover.

The resilient piece 14 of the chuck 10 connected to the rod rod 12 is pulled in the backward direction and the resilient piece 14 of the chuck 10 connected to the rod 16 is pulled backward, So that the workpiece A is clamped.

The spring 22 of the elastic part 20 is supported while being received in the holder 21. The holder 21 receives a plurality of the springs 22, A plurality of receiving holes are formed at equal angles so as to facilitate the additional mounting.

The mill piece portion 30 according to the present invention is operated by the driving portion 32 so that the chuck 10 is unclamped by pressing the rod rod 12 in all directions. The mill portion 30 can be installed by directly pressing the rod rod 12 by the drive unit 32. At this time, the load of the drive unit 32 is reduced and the drive unit 32 of the low output 2 and the other end thereof is moved forward and backward by a drive unit 32 including a motor and an air cylinder so as to move the rod rod 12 in the forward direction Respectively.

That is, the mill piece portion 30 is provided at a position facing the elastic portion 20 so as to press the elastic portion 20 and the rod rod 12, and the mill portion 30 is rotated by the operation of the driving portion 32 The rod portion 12 is moved in the forward direction by pressing the resilient portion 20 or the rod rod 12 while being pivoted about the hinge 34. At this time, the resilient piece 14 protrudes forward of the housing 16 The interval of the tub 11 is extended and the work A is unclamped.

The pressing piece 31 is provided at a position opposite to the elastic piece 20 so that the pressing piece 31 is transmitted to the pressing piece 31 through the pressing piece 31, The rotation of the drive shaft 2 is permitted even when the pressing force of the milling piece portion 30 is applied and the rotation of the chuck is stopped while the equipment is stopped, There is an easy advantage.

Since the driving unit 32 is used as a power for temporarily unclamping the chuck 10 during the exchange of the workpiece A, the chuck 10 of the machine tool including the shelf can be driven by the motor or the air cylinder, And is controlled in a hydraulic manner. In this way, the equipment is compact, noise and weight are reduced, ambient pollution by oil leakage is prevented, and the environment is kept clean. In addition, it is operated in a clean room where particulates, air temperature and humidity, There is a possible advantage.

3 (a), the clamping operating force of the chuck 10 is maintained by the elastic force of the elastic portion 20, and the milled portion 30 is temporarily operated as shown in Fig. 3 (b) Unclamping, there is an advantage that the clamping force is firmly maintained during the machining process without conventionally applying the hydraulic device.

The hinge 34 of the mill part 30 is provided on an extension bar 35 which is adjustable in length in the main body of the machine tool 1 and which is connected to the hinge 34, So that the end position is adjusted. The extension bar 35 is connected to the main body of the machine tool 1 by screws so that the length of the extension bar 35 is adjusted according to the rotation direction and the position of the hinge 34 is adjusted in the forward and backward directions according to the length of the extension bar 35 The operation section of the milling piece portion 30 according to the operation of the driving portion 32 is changed.

By adjusting the operating range of the rod rod 12 in such a manner as to change the operating range of the milling piece 30 by the extension bar 35, the elastic piece of the chuck 10, according to the diameter of the workpiece A, There is an advantage that the range to be expanded or reduced is simply variable.

10: chuck 20: elastic part
30:

Claims

A chuck (10) provided on a drive shaft (2) of a machine tool (1) and adapted to be clamped or unclamped by a back and forth feed force of a rod rod (12);
An elastic part (20) configured to press the rod (12) in a rearward direction to maintain the chuck (10) in a clamped state;
A mill piece portion 30 which is operated in the forward and backward directions by the driving portion 32 so that the chuck 10 is unclamped by pressing the rod rod 12 in all directions;
The chuck 10 includes a plurality of elastic pieces 14 connected to the rod rod 12 while the tank 11 is installed, a housing 16 in which the elastic pieces 14 are accommodated, Wherein the inclined surface (18) is provided at a position corresponding to the resilient piece (14) and the housing (16) so that the tub (11) is clamped during the forward movement.

delete

The method according to claim 1,
The elastic portion 20 is provided with a plurality of springs 22 and one end of the spring 22 is supported by the main body or drive shaft 2 of the machine tool 1 and the other end is installed together with the bearing 24, (12) in a backward direction.

The method according to claim 1,
The other end of the rod portion 30 is moved forward and backward by the driving portion 32 including the motor and the cylinder so that the rod portion 12 is moved in the forward direction Wherein the hydraulic chucking device for a machine tool comprises:

The method of claim 3,
The hinge 34 of the mill piece 30 is installed on an extension bar 35 provided on the body of the machine tool 1 so as to be adjustable in length so that the end portion of the mill piece 30 connected to the hinge 34 Wherein the hydraulic chucking device for the machine tool is provided to adjust the chucking force of the hydraulic chuck.