SU648389A1 - Machine for finishing of planar surfaces of articles - Google Patents

Description

and through gears - with a separate drive.

To raise and lower a spindle with a head, its middle part is embedded in a double-sided rod 11 of a pneumatic pressure device, made in the form of a piston actuator 12. In a pneumatic actuator, the piston 13 is mounted in one piece with a double-sided rod, which presses the head with the workpiece to the finishing tool to create a piston 13. when fine-tuning. A finishing tool, made with a flat annular working surface, the axis of which is not matched, is attached to the axis of the working rotor, is driven through gears from a separate electric motor (not shown in the diagrams).

In the central part of the working rotor

an air distribution device is installed to supply compressed air to the system of reciprocating pneumatic actuators. The air distribution device has a fixed communication disk 14 with a supply of 15 compressed air through the aperture of the central shaft 16 of the working rotor and a distribution disk 17 with channels for supplying compressed air through pipelines 18 and 19 to each piston actuator, as well as its discharge into the atmosphere. The disk 17 is installed in the Central part of the housing 20 of the working rotor. The dimensions of the channels of the distribution disc are determined by the compressed air consumption according to a predetermined sequence diagram. A gear ring 21 is rigidly connected to the working rotor body, which is engaged in engagement with the driving gear wheel 22 to enable the working rotor to rotate around its axis.

In the work area, the workpieces are fixed in the masters 23 on a pre-treated surface (technological base). The devices 23 are arranged concentrically relative to the spindles with the heads and the axis of the working rotor. Each master device has a rotary vertical shaft 24 mounted in bearings, with a holder 25 fixed stationary in its lower part, carrying a removable semicircular support 26. In the upper part of the shaft 24 there is a leash 27 mounted with a roller 28 pressed against a stationary copier 29 fixed on a stationary part 30 of the working rotor, under the action of the working spring 31. In addition, the shaft 24 is rigidly fixed to the rotary stop 32 with the adjusting screw 33, and with the working rotor body - the fixed stop 34. These stops fix the position of the holder interchangeable support in the initial position, i.e. in the working area.

The position of the holder, made in the form of a split sleeve with a st-screw

35, is adjusted by adjusting it with the interchangeable support along the axis of the rotary vertical shaft in accordance with the actual wear of the finishing tool.

Workpieces are loaded into

the working rotor of the machine is by an auto operator at loading position 36. After the loading at unloading position 37, the auto operator removes the machined parts. Recovery and

Maintaining the flatness of the working surface of the finishing tool is carried out by a correctly-mounted vibrating device at position 38.

The parts 3 to be processed are loaded by an auto operator at the loading position 36, in which the holder 25 of the master device is in the working area. In this case, the interchangeable support 26 of the holder 25 together with the rotatable vertical shaft 24 is located

It is in its original operating position. In this position, the removable support with the holder is fixed by means of a pivoting stop 32 with an adjusting screw 33 relative to the fixed stop 34. The replaceable support of the holder keeps the workpiece from leaving the treatment area under the effect of the resulting friction force between the end of the part 3 and the working surface of the finishing tool 4 . When fixing the part in the working

Q positions it is installed by the lower pre-processed cylindrical surface onto the interchangeable support 26 of the holder 25, and the upper annular, pre-treated end into the annular body of the self-clamping floating 5 head 2. as it moves down under the action of the pressure of compressed air in the upper working cavity of the pneumatic actuator 12. V this moment, the working rotor from the driving gear 22 through the toothed rim 21, rigidly connected to its body 20, receives a rotational movement around the vertical axis, does not coincide rail with the axis of rotation 4. Pad lapping tool rotating honing tool in the direction opposite to its rotation, perform together with the working rotor relative motion leading Self-clamping devices 23 and floating, the head 2 from the workpiece 3 in E.

Claims (2)

Self-tightening floating heads 2, 0 mounted on spindles x 1 of the working rotor, from the cardan shaft 10 through the central gear wheel 9, gear wheel blocks 8 and gear wheels 7 receive rotational movement around their axes. During this movement, the machined parts located in the heads and on the interchangeable bearings of the driving devices run around the flat annular working surface of the finishing tool. During the finishing process, they perform a complex relative movement with respect to the working surface of the finishing tool 4. As a result of this movement, a layer of metal is removed from the ends of the machined parts. By adjusting the pressure of the compressed air in the pneumatic actuator 12, the force of the workpiece 3 to the finishing tool and, consequently, the size of the removed metal layer is changed. Part 3, machined in the work area, is removed from the machining zone at discharge position 37 using an auto-operator. To do this, in the lower working cavity of the pneumatic actuator 12, a pressure of compressed air is created, under the action of which the piston 13 and the associated shaft 11 and the spindle 1 with the head move upwards. After lifting the head to the upper extreme position, the auto-operator removes the machined part from the working area. After the workpiece leaves the working area, the slowly rotating body 20 of the working rotor with the leading devices 23 leads one of the leads 27 with roller 28 to the projecting (working) part of the stationary copier 29. As a result, the vertical shaft 24 gets rotated around its axis and the interchangeable bearing 26 25 is retracted to the center of the finishing tool and locked in the rest position. This position of the interchangeable support will be maintained until the slowly rotating working rotor body 20 with the driving devices 23 leads it to the loading position 36 (Fig. 3), in which the roller 28 of the leash 27 comes off the working section of the fixed cam 29 and under the action of the working spring 31 (its tension) rotary vertical shaft 24 occupies the initial (working) position. Thus, the workmanship of each master device successively enters the work. As a result, the leading devices with interchangeable supports are alternately inserted into the work zone at loading position 36. A1 between the unloading 37 and loading 36 positions, all the leading devices with interchangeable supports are in the deduced state, i.e. outside the work area. Here, at position 38 of the working rotor of the machine, the editing is performed - the caricature of the finishing tool 4 with a vibrating device with a correctly caricating tool in the form of a ringing lap. This tool restores and maintains the flatness of the working surface of the finishing tool, ensuring uniform wear of the finishing tool and improving the accuracy of fine-tuning the planes of large parts. In order to provide compressed air for the system of piston pneumatic actuators into the central shaft 16 of the working rotor of the machine, an integrated air-distributing device. Through its supply 15, compressed air is supplied to the stationary communication DISC 14, and through the channels of the distribution disc 17 and pipelines 18 and 19 to the upper or lower working cavity of the piston-type pneumatic cylinder 12. When compressed air is fed through line 18 to the upper working cavity of the pneumatic actuator piston 13 and the spindle 1 associated with it is moved downwards. In this case, the compressed air through the pipeline 19 from the lower working cavity of the pneumatic actuator is vented to the atmosphere. When lowering the self-clamping floating head 2, with part 3., the required specific pressure in the working zone is created by maintaining the pressure of compressed air in the upper working cavity of each pneumatic actuator at a certain level. When compressed air is supplied through conduit 19 to the lower working cavity of the pneumatic actuator, the piston 13 and the spindle 1 associated with it are moved upwards. In this case, the compressed air through the pipeline 18 from the upper working cavity of the pneumatic actuator is vented to the atmosphere. When the self-tightening floating head is raised to the upper extreme position, it is released from the machined part. Then the auto operator removes the processed part from the working area. In connection with the automation of the working cycle of the finishing and dressing-sharpening of the finishing tool, the described rotary machine can be easily built into automatic lines and provides the most cost-effective layout when processing parts in a continuous stream. Automated duty cycle dramatically improves machining accuracy and labor productivity in highly labor-intensive finishing operations. The performance of the proposed rotary machine in comparison with the known devices has increased by 5-6 times; the accuracy of the surfaces of the finished parts increased to 1-3 microns. Claim I A machine for finishing the flat surfaces of parts, made in the form of a rotor, carrying spindles with tips for fastening parts pressed to the ground by means of pressure mechanisms, distinguished by; that, in order to enable machining of the ends of large parts, the machine is equipped with axially mounted rotor axles and shpindles with leading devices, locking parts fixed on the rotor and can be rotated and connected with a fixed copier inserted into the machine. 2. The machine according to claim 1, characterized in that the master device is designed as a holder fixed in the lower part of the shaft