SU891222A1 - Automatic machine for chamfering sleeves - Google Patents

Description

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FIELD: machine tool industry. A known machine for chamfering. on the sleeves, on the bed of which are installed the mechanisms of spindle spindle, loading, part clamps and limit switch t j.

However, the known machine has a low productivity and complex construction.

The purpose of the invention is to increase processing performance and simplify the design.

To achieve this goal, the machine is equipped, kinematically connected with one of the spindles, by a friction controller with a wedge, which interacts with a limit switch, hydraulic suppressor, made in the form, kinematically connected with another spindle, with a piston cylinder, the rod of which is connected a wedge of the friction regulator and on which the valve introduced into the automat is pushed with a pusher installed with the possibility of interacting with the cylinder of the hydrogasifier, where the spindle feeding mechanism is connected with the feeding and clamping mechanisms behind cooking by means of a pneumatic hammer introduced into the machine.

FIG. I shows the proposed machine, the general view; in fig. 2 - clamping device, top view; in fig. 3 - electrical circuit of the automaton.

An automatic chamfering machine on the sleeves contains a frame 1, a spindle 2 with a system of tg and levers 3, a pull 4, on which one of the hydraulic shock cylinder 5 is mounted, a valve 6 for feeding spindles with a pusher 7 and a friction regulator 8 containing a wedge 9 , the cylindrical part of which is clamped between the friction liners 10, screw 11 and limit switch fBK), controls the pneumatic hammer 12, which supplies compressed air to the component feed mechanism, which has a slope IN1 tray 13, actuated by pneumatic cylinder 14 of the slider 15, on which is hinged Ena rocking chair 16, slipping on roller 17, and a lever, 18 with a movable stop 19 and a clamp 20. The clamping device of the machine contains pneumatic discs

SO 21, in which the part and the interrupter 22 are attached, dropping it after processing. To regulate the smooth supply of parts to the pneumatic pulleys 21 and to bleed out the aerated air of their blocked sections of the system, a valve block 23 is inserted. The stops 24 restrict the levers 3. The automatic chamfering machine on the bushes operates as follows. The parts are placed in the tray 13 and, due to its inclined position, slides down on it. In the closed position, the VC electropneumatic gold 12 supplies compressed air to the channel a, as a result of which the pneumatic cylinder 14 of the part feeder puts the slider 15 to the extreme right position and the part slides into the rocking chair 1G. At the same time, compressed air enters the cavity of the cylinder of pneumatic discs 21 (FIG. 2), clamped the workpiece and into Iraklet of one of the cylinders of the hydraulic damper 5, fed the cutting tool (countersink) to the part (by moving the oil from one cylinder to the cavity of the other). When the cutting tool touches the part, the feed resistance increases, resulting in a shift of the wedge 9 of the frictional feed force adjuster 8. The amount of the feed force of the cutting tool and, therefore, the chamfer amount, from the moment they come into contact with the part, is determined by the frictional force between the cylindrical the surface of the wedge 9 and the friction liners 10 and is adjusted by a screw.

When the movement of the wedge 9 upwards open contacts VK.

However, due to the inclusion in the circuit of the automaton of an electro-pneumatic time relay (Fig. 3), the supply of the cutting tool to the part with a predetermined force will continue for the time determined by this relay.

After this time has elapsed, the pneumatic cauldron 12 will work, as a result of which compressed air will be vented from channel a to channel 6, ensuring the unclamping of parts in pneumatic 21, and the pusher 22 pushes the part from the cutting tool.

At the same time, the cutting tool is moved to the extreme position.

The feed of the next part takes place only after the cutting tool has been separated for the required distance determined by the position of the pusher 7. When the rod enters the hydraulic shock cylinder 5, the pusher 7 opens the valve 6 supplying the shafts 2 and the compressed air enters the corresponding cavity of the pneumatic cylinder 14. The pusher 7 returns to its original position under the action of its own weight when the working stroke of the cutting tool is made.

The pneumatic cylinder 14. moving the slider 15 with the already existing part on the rocking chair 16 lifts the free end of the tray 13 to a height h and the part slides up to the stop 19, which with its weight holds it

between the cutting tool, with a precise setting of it on the amount of chamfer, which is determined by the feed force, adjustable friction regulator with an electropneumatic relay, and also simultaneously feeds and orientates machined parts in a vertical plane, and the gripping and clamping takes place without changing the machine into considerable range of the sizes on diameter.

The use of the proposed machine makes it possible to significantly improve processing performance and expand technological capabilities.

Claims (1)

Claims. A chamfering machine on sleeves, on the bed of which there are installed mechanisms for feeding spindles, loading, clamping parts and a limit switch, characterized in that, in order to increase processing performance and simplify the design, the machine is equipped with a friction regulator kinematically connected to one of the spindles with a wedge interacting with a limit switch, a hydraulic damper made in the form of kinematically connected with another cylinder spindle with a piston, the rod of which is connected with the wedge of the friction regulator and which contains a valve inserted into the machine with a pusher installed with the ability to interact with the cylinder of the hydraulic suppressor, the spindle feeding mechanism being connected with the mechanisms for feeding and - clamping the workpiece by means of a pneumatic damper inserted into the machine. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 358903, cl. At 23 V 3/30, 1970. all subsequent parts from sliding onto the rocking chair 16. Upon further movement of the slider 5 rocking chair 16, rolling around the roller 17, put the part in a vertical position and feeds it into the area of the pneumatic pullers 21. By this time the levers 3 will reach the stops 24, which limit the separation of the levers 3, in order to install the wedge 9 of the friction force adjusting regulator 8 in the initial position. When the wedge 9 moves downwards, the VC contacts close and the cycle repeats. The adjustment of the feed mechanism to the size of the machined parts in diameter and length is carried out by placing the stop 19 at the required height above the parts to be machined with the help of a screw and also by moving the stop 19 along the lever 18. Such a constructive implementation of the chamfering machine allows you to catch the filed detail in any gap