KR101826161B1

KR101826161B1 - Clamping apparatus

Info

Publication number: KR101826161B1
Application number: KR1020150131699A
Authority: KR
Inventors: 주성호; 김기선
Original assignee: 삼성중공업(주)
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2018-02-06
Also published as: KR20170033666A

Abstract

The present invention relates to a member clamping device, the member clamping device comprising: a table for placing a member to be processed; And a plurality of clamping units spaced apart from each other around the periphery of the base, wherein each of the plurality of clamping units comprises: a clamp member for clamping a rim portion of the member to be processed; And a transferring portion for transferring the clamping member to the rim portion of the member to be processed. According to the embodiment of the present invention, the workpiece can be stably clamped adaptively to the shape and the machined surface of the workpiece.

Description

[0001] CLAMPING APPARATUS [0002]

The present invention relates to a member clamping apparatus, and more particularly, to a member clamping apparatus capable of clamping a workpiece of various shapes on a table.

For the drying of shipbuilding or offshore structures, structures of various shapes are produced by welding. For example, various shapes of stiffeners should be welded to the main beam to support the main beam. In order to weld the main beam, the welding part of the stiffener is chamfered at a certain angle. In case of chamfering by gas cutting, it is difficult to precisely process according to the angle and dimension of the cut surface due to the nature of flame cutting. Recently, there has been a rapid increase in demand for replacing flame cutting with machining using a milling tool. In the case of the mechanical cutting method, there is a problem that the position of the member is changed due to the vibration during the cutting operation, and how to fix the member firmly is an important factor for improving work safety and quality.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a member clamping device capable of stably clamping a member to be processed adaptively to the shape and machining surface of the member to be machined.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

A member clamping apparatus according to an aspect of the present invention includes: a table for placing a member to be processed; And a plurality of clamping units spaced apart from each other around the base, wherein each of the plurality of clamping units comprises: a clamping member for clamping a rim portion of the member to be processed; And a transfer unit for transferring the clamp member to a rim portion of the member to be processed.

Wherein the transfer unit comprises: a support table for supporting the clamp member; And a driving cylinder for driving the cylinder rod, the end of which is fixed to the support rod, to move the support rod.

The platen may have a groove formed in a driving direction of the cylinder rod so that the support rod can pass through.

The plurality of clamping units are installed at regular intervals along four corners of the base, and the grooves may be formed in a mesh structure on the base so that the clamp members can move in the front-back direction or the left-right direction.

Wherein each of the plurality of clamping units further comprises a sensor unit installed on the clamp member for sensing a rim of the member to be processed and generating a detection signal, wherein the member clamping unit controls the transfer unit in accordance with the detection signal, The control unit may further include a control unit.

Wherein the member clamping device further includes a selection unit that selects clamping units to clamp a rim of the workpiece, excluding a machining surface to be machined, out of the rim surface of the member to be machined according to the shape of the member to be machined, The clamping members of the clamping units selected by the clamping unit can be controlled to transfer the clamping units of the clamping units to the edge of the member to be processed.

According to the embodiment of the present invention, the workpiece can be stably clamped adaptively to the shape and the machined surface of the workpiece.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

1 is a plan view schematically showing a member clamping apparatus 100 according to an embodiment of the present invention.
2 is a cross-sectional view showing part of a member clamping apparatus according to an embodiment of the present invention.
3 is a front view showing a part of a member clamping device according to an embodiment of the present invention.
4 is a configuration diagram of a control system 180 constituting a member clamping apparatus according to an embodiment of the present invention.
5 and 6 are plan views for explaining the operation and operation of the member clamping apparatus according to an embodiment of the present invention.

Other advantages and features of the present invention and methods for accomplishing the same will be apparent from the following detailed description of embodiments thereof taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and the present invention is only defined by the scope of the claims. Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as many as possible for the same or corresponding configurations. To facilitate understanding of the present invention, some configurations in the figures may be shown somewhat exaggerated or reduced.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", or "having" are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, parts, or combinations thereof, whether or not explicitly described or implied by the accompanying claims.

1 is a plan view schematically showing a member clamping apparatus 100 according to an embodiment of the present invention. 2 is a cross-sectional view showing part of a member clamping apparatus according to an embodiment of the present invention. 3 is a front view showing a part of a member clamping device according to an embodiment of the present invention.

1 to 3, a member clamping apparatus 100 according to the present embodiment includes a base 120, a plurality of clamping units 140, a sensor unit 160, and a control system 180. The surface plate 120 is provided for placing the workpiece 10 to be machined. In the illustrated example, the surface plate 120 is provided in a substantially rectangular shape, but may be provided in another shape.

A plurality of clamping units (140) are provided along the circumference of the base (120). In an embodiment, the plurality of clamping units 140 may be installed at regular intervals along the periphery of the front, rear, left, and right corners of the base 120. In the illustrated example, seven clamping units 140 are provided on each of the four corners of the base 120 to provide a total of 28 clamping units 140. However, the number and location of the clamping units 140 And can be variously modified.

In one embodiment, each clamping unit 140 may include a clamp member 142 and a transfer unit 144. The clamp member 142 is provided for clamping the rim portion of the member 10 to be processed. In one embodiment, the clamp member 142 may be provided as a support plate for pressing the upper surface portion of the edge side of the member to be processed 10, and a lift portion for lifting the support plate.

The transfer unit 144 is provided for transferring the clamp member 142 to the rim portion of the member 10 to be processed. In one embodiment, the transfer section 144 may include a support 144a and a drive cylinder 144b. The support member 144a is provided to support the clamp member 142. Fig. In order to reduce friction with the bottom surface, rolling wheels may be installed on the lower surface of the support 144a. The end of the cylinder rod 144c of the drive cylinder 144b is fixed to the support 144a. The drive cylinder 144b drives the cylinder rod 144c to move the support 144a in the forward, backward, or leftward and rightward directions.

The feed portion 144 is not limited to the illustrated cylinder structure and may be modified to other mechanism structures capable of moving the clamp member 142, such as a rack / pinion gear, motor / screw shaft gear combination, and the like.

The base 120 may have a groove 120b between protrusions 120a for supporting the member to be processed 10 so that the support 144a can pass through. Each of the protrusions 120a may have a rectangular shape and may be arranged in a checkered pattern. The groove 120b between the projections 120a may be formed in the driving direction of the cylinder rod 144c. The grooves 120b may be formed in a mesh structure on the base 120 by being processed at regular intervals in the lateral / longitudinal direction so that the clamp members 142 can move in the front-rear direction or the left-right direction.

The clamp members 142 of the clamping units 140 provided on the upper and lower sides of the base 120 can move in the longitudinal direction along the grooves 120b formed in the longitudinal direction and the left and right sides of the base 120 The clamp members 142 of the clamping units 140 provided on the side of the clamping unit 140 can move in the lateral direction along the grooves 120b formed in the transverse direction.

The sensor unit 160 is installed in each of the clamp members 142 and detects a rim portion of the member 10 to generate a detection signal. The sensor unit 160 may be provided, for example, as a distance sensor for detecting the edge portion of the member 10 to be processed by a laser or the like. The sensing signal generated by the sensor unit 160 is provided to the control system 180 for control of the clamping unit 140. The control system 180 controls the plurality of clamping units 140 according to the shape of the member 10 to be processed and the sensing signal of the processing surface and the sensor unit 160.

4 is a configuration diagram of a control system 180 constituting a member clamping apparatus according to an embodiment of the present invention. 1 to 4, the control system 180 includes a control unit 182, a user interface unit 184, a communication interface unit 186, a memory 188, a selection unit 190, and a display unit 192, . The control unit 182 is provided for controlling the plurality of clamping units 140. [ The control unit 182 may control the transfer unit 144 of each of the clamping units 140 according to the detection signal of the sensor unit 160. The control unit 182 may be provided as at least one processor.

The user interface unit 184 may be provided by means such as a mouse, a keyboard, or a touch pad as means for an operator to input a clamping command. The communication interface unit 186 receives a sensing signal from the sensor unit 160 and performs a communication interface function for outputting a control signal to the plurality of clamping units 140. The memory 188 stores programs and various information for controlling the plurality of clamping units 140. The selecting unit 190 selects clamping units for clamping the rim portion excluding the machining surface to be machined from the rim surface of the member 10 to be machined according to the shape of the member 10 to be machined.

The control unit 182 can control the transfer unit of the selected clamping units so that the clamp members of the clamping units selected by the selecting unit 190 are transferred to the edge portion of the member 10 to be processed. The display unit 192 displays the shape of the member to be processed 10, the machining surface inputted by the operator through the user interface unit 184, information of the clamping units selected by the selecting unit 190, Lt; / RTI >

5 and 6 are plan views for explaining the operation and action of the member clamping apparatus 100 according to an embodiment of the present invention. Referring to Figs. 1 to 5, first, the workpiece 10 is put on the platen 120 by a crane or the like for machining the member 10 to be machined. Clamping units to be driven to support the workpiece 10 among the clamping units may be preselected by the operator or may be predetermined according to the shape information of the member 10 to be processed by the control system.

Or the clamp member of the clamping units moves so that only the clamp member which senses the edge portion of the member 10 to be processed supports the member 10 to be processed and the edge of the member 10 to be processed The clamp member, which has not been additionally sensed, may be operated to return to the home position. At this time, in order to prevent interference between the clamp members 142, the clamp members 142 can be sequentially operated in the predetermined order.

When the worker inputs the lower surface (the corner surface at 6 o'clock in the drawing) of the member 10 to be machined to the control system 180 as the machining surface 12 (for example, the cutting surface) The clamping units 140a, 140b, 140c for clamping the edge portion of the workpiece surface excluding the machined surface 12 are selected. The clamp members 142 of the selected clamping units 140a, 140b and 140c are moved forward or backward or right and left along the inside of the groove 120b machined in the table 120 by the transferring unit 144, As shown in FIG.

When the sensor unit 160 of the selected clamping units 140a, 140b and 140c senses the rim portion of the member 10 to be processed, the feeding of the clamp member 142 is stopped and the clamp member 142 is moved (Not shown) to press the edge portion of the member 10 to be processed. The clamping units 140a, 140b and 140c selected from the 3 o'clock / 9 o'clock / 12 o'clock direction clamp the three corners of the member 10 to be processed. In this state, A machining operation such as cutting is performed.

6, after the machining operation on the machined surface 12 at the 6 o'clock position is completed, the operator moves the right side surface (the edge surface at the 3 o'clock direction in the drawing) of the workpiece 10 to the control system 180 The clamping unit at the 6 o'clock direction is released, the clamping unit at the 3 o'clock direction is released, and the clamping units 140d, 140e and 140f for clamping the rim except for the working surface 14 ) Is selected.

The clamp members 142 of the selected clamping units 140d, 140e and 140f move back and forth or right and left along the inside of the groove 120b machined in the table 120 by the transfer unit 144, As shown in FIG. When the sensor portion 160 of the selected clamping units 140d, 140e and 140f senses the rim portion of the member 10 to be processed, the feeding of the clamp member 142 is stopped, (Not shown) to press the edge portion of the member 10 to be processed. Accordingly, the three corners of the member to be processed 10 are clamped by the clamping units 140d, 140e, and 140f selected from the 12 o'clock / 3 o'clock / 9 o'clock o'clock direction, A machining operation such as cutting is performed.

According to the present embodiment, the shape of the member to be machined and the machining surface can be adaptively clamped, and the machining operation can be performed by supporting the machined member having a complicated shape.

It is to be understood that the above-described embodiments are provided to facilitate understanding of the present invention, and do not limit the scope of the present invention, and it is to be understood that various modifications are possible within the scope of the present invention. It is to be understood that the technical scope of the present invention should be determined by the technical idea of the claims and the technical scope of protection of the present invention is not limited to the literary description of the claims, To the invention of the invention.

10: member to be processed 100: member clamping device
120: Platen 120a:
120b: groove 140: clamping unit
142: clamp member 144:
144a: Support base 144b: Drive cylinder
144c: cylinder rod 160:
180: control system 182:
190:

Claims

A table for placing the member to be processed; And
And a plurality of clamping units spaced along the perimeter of the table,
Wherein each of the plurality of clamping units comprises:
A clamp member for clamping a rim portion of the member to be processed;
A conveying unit for conveying the clamp member to a rim portion of the member to be processed;
A selecting unit for selecting clamping units for clamping a rim portion excluding a machining surface to be machined from the rim surface of the member to be machined according to the shape of the member to be machined;
A sensor unit installed on the clamp member for sensing a rim of the member to be processed and generating a detection signal; And
And a control unit for controlling the transfer unit of the clamping units so that the clamp members of the clamping units selected by the selection unit are transferred to the rim of the member to be processed,
The transfer unit
A support for supporting the clamp member; And
And a driving cylinder for driving the cylinder rod, the end of which is fixed to the support rod, to move the support rod,
Wherein the base has a groove of a mesh structure formed in a driving direction of the cylinder rod so that the support can pass therethrough,
Wherein the clamp member includes a support plate for pressing an upper surface portion on a corner side of the member to be processed and a lift portion for lifting the support plate,
Wherein when the sensor portion senses the rim portion of the member to be processed, the feeding of the clamp member is stopped, and the support plate is lowered to press the upper surface portion of the edge side of the member to be processed.

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