JPH0531836U - Clamp device for curved surfaces - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Clamping and unclamping of curved parts during machining of parts with free curved surfaces such as aircraft body parts can be easily performed by simple operations. [Structure] On the workbench where the parts A to be clamped are placed,
A plurality of slide blocks 1 that slide on the slide surface 8 are juxtaposed. Each slide block 1 incorporates a fluid pressure slide cylinder 2. The side clamp cylinder 3 is attached to the tip of the cylinder 2 in the horizontal direction, and
Mount the bottom clamp cylinder 4 downward. Both clamp cylinders 3 and 4 are configured to be slidable by fluid pressure. In operation, first, the slide block 1 is moved to roughly perform positioning, and then the slide cylinder 2 is moved forward to simultaneously clamp the front surface and the bottom surface of the part A by the side clamp cylinder 3 and the bottom clamp cylinder 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp device for machining a part having a freely curved surface such as a body part of an aircraft.

[0002]

[Prior Art]

 An example of a conventional clamping device for this kind of component is shown in FIGS. 3 and 4. 3 is a three-dimensional view showing a clamped state, and FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, in which the clamp target component A ′ is fitted on the workbench to the curved shape of the component and the presser foot The position of 10 is determined and the clamp 11 is performed. Since the part A'has no rigidity, it is finely fixed by the presser foot 10. Therefore, a large number of pressing jigs are required for each part. B'is a reference plane.

[0003]

[Problems to be solved by the device]

 By the way, in the above-described conventional method for clamping components, a clamping jig is required for each type of component, and it is necessary to prepare a large amount of jigs.

Therefore, it takes a lot of labor and time to handle a large number of jigs, and a large storage area is required.

Further, when the part to be clamped is changed, the shape of the part is changed, so that it is necessary to remanufacture the jig regardless of the size.

An object of the present invention is to solve the above-mentioned problems of the conventional technology and to provide a clamping device capable of creating a curved surface corresponding to various shapes of parts to be clamped.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a clamp device of the present invention, which can be freely curved, slides on a slide surface, and a curved surface of a clamp target component installed on a work table by a slide mechanism as appropriate. A plurality of slide blocks that move back and forth according to the shape are arranged facing the target part, and each slide block has a built-in slide cylinder that slides by hydraulic pressure or air pressure. Is equipped with a side clamp cylinder for clamping the side of the target part and a bottom clamp cylinder for clamping the bottom of the target part.

[0008]

[Action]

 The clamp device of the present invention having the above-described structure is capable of freely adjusting the curved surface of the slide cylinder by incorporating a slide cylinder with built-in slide cylinders equipped with side and bottom clamp cylinders along a slide surface by a robot or an automatic controller. Set the position by moving toward the target part to be clamped to a rough position within the operating range, and then move the slide cylinder in the slide block forward by hydraulic pressure or pneumatic pressure.

As a result, the side clamp cylinder and the bottom clamp cylinder mounted on the tip of the slide cylinder come to the position immediately before the component to be clamped and come into contact with the curved surface of the component.

Next, hydraulic pressure or air pressure is applied to the side surface clamp cylinder and the bottom surface clamp cylinder from the rear side to simultaneously clamp the side surface and the bottom surface of the component by both clamp cylinders.

Further, during machining of the clamp part, only the clamp part in which the cutting tool is arranged is released from the clamped state, and the slide cylinder of the clamp part retracts.

By such an operation, it is possible to easily clamp and release the curved surface of the clamp target component.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a three-dimensional view of the present invention applied to an attachment for machining a frame part of an aircraft having a curved surface, and FIG. 2 is an arrow AA of FIG. FIG.

In these drawings, A indicates a part to be clamped, which is a part that constitutes a vertical cross section of the fuselage of the aircraft. There are several tens to several hundreds in one aircraft, and about 3 to 5 in one cross section. It is divided into degrees. The outer shape is formed as a free curve.

The part A to be clamped is arranged along the reference plane B on the workbench.

A plurality of slide blocks 1 that slide on a slide surface 8 are juxtaposed on a workbench, and a slide cylinder 2 is built in each slide block 1.

The rear end of the slide cylinder 2 has a space communicating with the hydraulic or pneumatic pressure supply pipe 5.

At the tip of the slide cylinder 2, a side clamp cylinder 3 is mounted horizontally, and a bottom clamp cylinder 4 is mounted vertically downward. A supply passage for supplying a fluid under pressure from another hydraulic or pneumatic supply pipe 6 is communicated with the portion through the central portion of the slide cylinder 2.

Reference numeral 7 denotes a slide mechanism having an appropriate structure in which the slide block 1 is built in, and may be, for example, a means composed of a rack and a pinion, or a feeding means composed of a gear motor.

Next, the operation of the apparatus of this embodiment will be described. First, the slide block 1 is moved by a robot or an automatic controller in accordance with the curved surface shape of the part A to be clamped to roughly position the slide block 1. To do. This position is within the operating range of the slide cylinder 2 built in the slide block 1.

Next, the slide cylinder 2 is moved forward by the fluid pressure from the fluid pressure supply pipe 5, so that the side clamp cylinder 3 and the bottom clamp cylinder 4 attached to the tip of the slide cylinder 2 are as shown in FIG. It comes to the position just before the part A to be clamped.

Next, the fluid pressure from another supply pipe 6 is supplied to the rear surfaces of the side surface clamp cylinder 3 and the bottom surface clamp cylinder 4 through a through hole formed in the center of the slide cylinder 2 to make it on the reference surface B. Press the part A and clamp the front (side) and bottom of the part at the same time.

When it is necessary to machine the clamp part, the clamp part of only the part to be clamped A is released, the slide cylinder of the part is retracted, and the part to be machined is machined with a cutting tool or the like. Create a space for easy removal.

[0024]

[Effect of the device]

 As described above, according to the curved surface compatible clamp device of the present invention, when clamping a curved surface of a component, it is possible to cope with various curved surfaces of a plurality of components simply by changing the position of the clamping device. Therefore, unlike the conventional method, it is not necessary to replace the clamp presser foot and jig, and it becomes possible to easily machine parts having different shapes. Furthermore, there is no need to manufacture many jigs and pressers, which saves manufacturing costs and the area and labor for storing and managing them.

[Brief description of drawings]

FIG. 1 is a perspective view of a clamp device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view showing a conventional clamping method.

4 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Slide Block 2 Slide Cylinder 3 Side Clamp Cylinder 4 Bottom Clamp Cylinder 5, 6 Hydraulic or Pneumatic Supply Pipe 7 Slide Mechanism 8 Slide Surface 10 Presser Foot A, A'Parts B, B 'Reference Surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masahiko Hirata Inventor Masahiko Hirata 10 Oe-cho, Minato-ku, Nagoya, Nagoya Aerospace Systems Mfg. Co., Ltd. (72) Tomohiko Miyabe 1-2-3 Toranomon, Minato-ku, Tokyo No. Foundation Hojin within Japan Aircraft Development Association

Claims (1)

[Scope of utility model registration request] 1. A plurality of slide blocks which slide on a slide surface and move back and forth according to a curved shape of a target component installed on a work table by a slide mechanism are arranged facing the target component, and the slide blocks are arranged. Each block has a built-in slide cylinder that slides by hydraulic pressure or air pressure, and the tip of the slide cylinder is equipped with a side clamp cylinder that clamps the side surface of the target component and a bottom clamp cylinder that clamps the bottom surface of the target component. Clamping device that can be freely curved.