JPS5937002A - Cutting device for surface part of thin plate - Google Patents

Abstract

PURPOSE:To prevent deformation and strain from remaining in a work for cutting the work in a precise shape, by securing the work by means of a collet chuck, and by carrying out a cutting process to the work from both surfaces thereof, simultaneously. CONSTITUTION:A thin plate-like work 16 having a hole through which the work 16 is secured to a spindle 13, is rotated at a suitable rotational speed. Cutter beds 22A, 22B on which cutting tools are set, respectively, are disposed on a table 18, movably in the direction of the arrow. The cutting process of the work 16 is carried out from both surfaces thereof between the cutter beds 22A, 22B by moving the table 18 back and forth in the direction of the arrow X. Further, since the work 16 is attached by means of a collet chuck, the above-mentioned purpose is attained.

Description

[Detailed description of the invention] The present invention relates to a processing device for cutting a surface portion of a thin plate.

Conventional thin plate southern processing evaporation board full vacuum chuck.

Alternatively, the surfaces were attracted using an electrostatic chuck, etc., and both sides were processed one at a time. In such a method, the thin plate is attracted in a deformed state due to the suction force, and when removed from the chuck, the deformation remains or distortions due to machining remain. Furthermore, productivity was low because one side was processed at a time.

The present invention has been made from this point of view, and its purpose is to provide a complete surface cutting device for thin plates that can be cut into an accurate shape without leaving any deformation or distortion after processing, and that is highly productive. be.

The present invention will be explained below with reference to figures showing one embodiment. As shown in FIG. 2, the main shaft 13 of the headstock 12, which is fixed on the top surface of the bed 11 in FIG. Tapered to form a collet chuck,
By strongly screwing the widening fitting 15 into this taper and pushing it wide, the thin plate-shaped workpiece 16'lj is fixed to the main shaft 13 through the hole. This workpiece 16 is driven at an appropriate rotational speed by a main electric motor 17 via a gear mechanism (not shown) inside the headstock 12. A table placed on the upper surface of the ped 1 The table 18 has a nut (not shown) fixed inside the table 18, and this nut is screwed into the screw 2 which is rotated from the feeder motor 19 through the shaft or gear mechanism 20. TS: "13 up? Slide in the X direction.

Two turrets 22A and 22B are placed on the top surface of the table 8, and these turrets 22A and B are connected to the top surface of the table 18 via a tail (see FIG. 1) as shown in FIG. The right-hand threaded nut 23A and the left-hand threaded nut 2311, which are mounted and fixed inside, are screwed into the screw shaft body that shoulders the right and left-hand threads, so by turning the knob 2J7, the tool rests ηA and B can be adjusted. Move in two directions. In addition, the tip of the tool rest 22A and ρB is machined with vlJ16.
'i A sawtooth 26 for cutting is attached.

With configuration 1 as described above, the table 18 is first moved backward, and then the workpiece 16 is spread out and attached to the main shaft 13 via the metal fitting 15. Next, the knob 25 is rotated to set the two sawtooths 26 to the predetermined positions, the workpiece 16 is rotated by the electric motor 17, and the table 18 is advanced by the feed motor 19, so that the two sawtooths 26 are The workpiece +13 f will be cut from both sides.

As described above, the thin plate surface cutting device of the present invention has the following features:
A bed, a table placed on the bed and slid in the longitudinal direction of the bed by a feeding motor, a headstock fixed to the bed, a collet chuck supported by the headstock and rotationally driven by a main motor. It consists of a main shaft with functions, a pair of tool rests and a saw that are placed on the table and slide in different directions with right and left hand screws, perpendicular to the sliding direction of the table.

For this reason, the attachment of the thin plate to the main shaft is not through the surface but through the hole with the collet chuck.
Deformation does not occur during cutting, and since it is cut from both sides, it is offset by the cutting strain and does not occur. Therefore, it is possible to cut the correct shape, and the flatness and parallelism are excellent, and the roughness is also improved. Furthermore, since both surfaces are cut at once, the present invention has many advantages, such as higher productivity.

[Brief explanation of the drawing]

The drawings all show one embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a cross-sectional view of the main shaft and workpiece, and FIG. 3 is a top view of the tool rest and table. 13... Bed, 12... Headstock, 13... Spindle, 16... Workpiece, 17... Main motor, 18...
・Table, 19...Motive for sending (company), 22A, B・
...Turret rest, 26...Nokoito. Applicant Toshiba Machine Co., Ltd. 71 Diagram Piece 2I21

Claims (1)

[Claims] A bed, a table placed on the bed and slid in the longitudinal direction of the bed by a feeding motor, a headstock fixed to the bed, and a collet supported by the headstock and rotationally driven by a main motor. A main shaft having a chuck function, a pair of blades placed on the table and sliding in different directions and perpendicular to the sliding direction of the table by right and left screws, and attached to the same tool rest respectively. The workpiece is attached to the main shaft by a collet chuck, and the two
Is that the table above? A device for cutting the surface of a thin plate that cuts both sides of the plate at the same time by moving through the plate.