CS196109B1 - Clamping device of the circular saws - Google Patents

Description

SOCIALISTIC AND DESCRIPTION OF THE INVENTION

<'·> TO THE COPYRIGHT CERTIFICATE U 196109 L · 7 (11) (Bl)

(Sl) Int C1.3B 23 D 47 / 04B 23 D 45/12 (40) Published 29 06 79

OFFICE OFFICE (45) Published 15 06 82

AND DISCOVERY (75)

The inventor BYSTRIANSKY MARIÁN, BŘEZNO (54) Circular saw clamping devices 1

BACKGROUND OF THE INVENTION The present invention relates to a cold-clamping clamping device for precision drawn tubes.

Clamping jaws, which are used to clamp the precisely drawn pipes into the cold, designed so that their clamping, t. j. the front part is clamped at an angle for more perfect fit. In order to prevent the pipes from rotating around the longitudinal axis of the straight cutting by a circular saw, a groove is milled on the clamping part. threaded profile. Two sliding jaws, which virtually ensure the clamping of the pipes, move through the directional part and are controlled by an electromagnetic valve, which moves the piston of one position to the other to deliver air to or from the pistons where the piston rods move. the piston rod together with the sliding jaws on the rigid jaw to engage the tube or to sleep when the tubes are released and can be withdrawn from the space between the jaws. The two fixed jaws serve as a support for the cut tubes and can be controlled by the adjusting screw either towards the perpendicular axis of the circular saw or vice versa. The prior art design of clamping jaws has several drawbacks, in particular that the sliding jaw is designed such that the clamping surface is very narrow and spaced from the continuous groove in which the circular saw moves. As a result, when cutting pipes, they are bent and not subjected to end-to-end impact due to the progressive hydraulic lift, and are thus moved into engagement. The biggest disadvantage is the limited number of cut pipes. In the case of the state, it is possible to cut a maximum of two pipes of small diameters, which is unproductive. There is also a great deal of effort, since the service must switch on and open the clamping jaws in short time intervals. Another serious drawback, which reduces surface quality, especially in annealed tubes, that used metal jaws have flat, flat milled grooves that cause the surface to be scored.

The above-mentioned drawbacks are eliminated by a new design of the circular saw clamping device, consisting of two-sided and a pair of sliding jaws, underlay. The essence of the invention is that the jaw pairs are provided with a semicircular active surface, and recesses of the recesses formed on the active flat movable jaws are formed on the active flat jaws. According to a preferred embodiment of the invention, the semicircular jaw surfaces are provided with a replaceable insert. An advantage of the underlay clamping device is that a more rigid tube is achieved in the case of a replaceable insert and a better tube quality.

There has been a significant increase in productivity due to the possibility of bulk clamping units for circular sawing. For example, with an internal diameter of 44 mm replaceable prismatic insert, up to 24 pieces of 4 to 5 mm diameter pipes can be clamped. However, the applications of the invention can be adapted to any pipe diameter. An exemplary embodiment of the apparatus of the invention is illustrated in the attached drawing 196109

Claims (2)

Fig. 196109, wherein in Fig. 1 is a side view, Fig. 2 is a top view. As can be seen from the figures, a pair of movable nozzles 12, which are prismatic, are inserted into the conduit 6 screwed onto the base plate 9, and are connected to the piston rod 7 of the air cylinder 1, with a pin 2. The fixed jaws 13 are adjustable by screw 4 along the second guide 5 either closer or further away from the vertical axis of the circular saw J4 moving in the continuous groove 14, which both pairs of jaws 12, 13 adhere to. surfaces 3 of the liner. The operative surfaces 3 of the jaw pairs 12, 13 are designed to engage the jaws 12, 13 completely free when they are closed. They are provided with recesses 15 and projections 15, which engage with each other on the counter-jaws 12, 13. The depth of the recess 15 and the projections 15 ‘is a retainer because it affects the gap between the intersections 12, 13 and is as small as possible, P R E D Μ E T Clamping device for circular saws, consisting of a pair of fixed and twin-slide jaws, characterized in that the jaws of the jaws (12, 13) are provided with a semi-circular active surface (3), on the flat surface (3) of the fixed jaws / 13 / recesses (15) are formed for protrusions (15) and, if desired, a cutter as well as a single tube, e.g. 4 mm in diameter. The air cylinder 1 is provided with an inlet 10 and an air outlet 11. Depending on the wall thickness of the pipes to be cut, when the pairs of jaws 13, 13 are ready to hold the pipes, the air pressure in the air cylinder 1 is required. The tubes inserted between the pairs of jaws 12, 13, the sliding pusher 12 are moved towards the fixed jaw 13 and pressed at the same time. The tubes are placed in the space of the semicircular prism between the operating surfaces 3 by moving the sliding claw 12. When perfectly clamped, it automatically turns on the blade saw that enters the cut. Since the clamping jaws 13, 13 are made wide and clamp the tubes in the immediate vicinity of the continuous groove 14, a larger contact surface is also formed which affects the more efficient and stronger clamp. The use of the device according to the invention avoids the unwanted bending of the cut tubes. DISCLOSURE OF THE INVENTION formed on an active flat (3) slider (12). 2. Apparatus according to claim 1, characterized in that the semi-circular active surfaces (3) of the refill (12,13) are provided with a replaceable component. 1 sheet of drawings Srvcrografi ·. n. p- xivod 7, Moel