SU818835A1 - Honing machine with automatic dimension monitoring according to unclampable tool position - Google Patents

Description

Union of Soviet

Socialist

Republics

State Committee

USSR for business and discoveries

DESCRIPTION OF THE INVENTION

TO AUTHOR'S CERTIFICATE (61) Additional to author. certificate-wu - - (22) Declared 25.05: 79 '(21) 2771614/25-Ό8 with the addition of application No. - (23) Priority; - (43) Published on 7/7/81. Bulletin No. 13 (45) Date of publication of the description 07.04.81

(51) M: Cl. ³

24 V 33/06 (53.) UDC 621.923.5.

(088.8) (72) Authors, inventions.

(71) Applicant t

Η. N. Bogoroditsky, K. K. Chubarov and N. I. Pozdnyakov

North-West · Correspondence Polytechnic Institute

(54) HONING MACHINE WITH AUTOMATIC DIMENSIONAL CONTROL BY POSITION OF AN EXPLOSIVE ELEMENT

The invention relates to self-governing honing equipment and can be used when honing particularly deep holes.

Famous honing machines are automatic. dimensional control, · by. the position of the expanding element, contain a loop control loop, machine · ,. controls, a new device, a node for radial supply of bars by means of an expansion element, as well as a drive for a node of radial supply of bars.

The disadvantage of such honing machines is the low accuracy of control at. deep hole machining.

The aim of the present invention is to improve the accuracy of processing and control of honed holes. by reducing the length of the expandable element when processing deep holes and simplifying the design by. performance of functions * supply, control, and management of a single mechanism.

This goal is achieved by the fact that the control control device and the drive of the radial feed unit, bars are made in the form of a synchro sensor, and the radial feed unit is equipped with a synchro, receiver, and the rotor shaft of which is connected to the expandable shaft., element ..

Na.Fig. 1 - shows a general view of the honing machine. With automatic dimensional. control by position of the expanding element; Fig. 2. is a variant of the I cam connection. expandable, element with a shaft - rotor, selsyn, receiver; in FIG. 3 - section A — A of FIG. 2; in FIG. 4 - option II.connection of the conical expansion element with the rotor shaft, 0 selsyn receiver; cd FIG. 5 - electrical circuit. connections of a synchro sensor and synchro receiver.

The honing machine (ftsg. 1) contains a bed. 1 and vert5 lug 2 placed on it, which is a hollow spindle with cams for fastening the workpiece, details 3, rest 4, special stand 5. with interchangeable tray, 6 „working carriage, 7, providing rotational 0 and reciprocating honing movement. heads .8, and synchro sensor 9, - used as a control control device and a drive element of the unit, radial supply of bars. 5 for. maintaining., and the direction of the stem of the honing head 8 in front of the bed, a stand is provided. 10. For the supply of cutting fluid, a pump 11 is installed, to which it is connected. 0 hose 12 with nozzle. · 13 ,. inserted into

Τ '3 plug 14, fixed with an interference fit in the hole of the receiver 13 of the cutting fluid, which in turn is rigidly fixed to the workpiece and rotating with the part about.

The expandable element of the honing head δ can be made in several versions. For example, in the form of a cam 16 with spiral working surfaces (Fig. 2, 3), having a shank rigidly connected by a sleeve 17 and fingers 18 to the shaft 1U of the rotor of the synchro receiver 20, or in the form of a cone 21 (Fig. 4) with a splined shank connected by means of a spline sleeve 22 with a spline part of the rotor shaft of the synchro receiver 2U (the cone 21 has a threaded portion interacting with the head housing 8). And in fact, and in another embodiment, the contact surface of the pads 28, carrying the honing bars 24, will repeat orazuyuschih joining surface of the expanding elements.

The selsynny sensor 9 can be connected to the synchro receiver 2U (Fig. O), for example, by means of electric wires with the inclusion of current transformers 2o, 26 and 27, the secondary windings of which are connected to the analysis node 28. The analysis node 28 is connected to the circuit 2y changes in the operating mode of the machine (nursing, turning off) and with the alarm unit 86.

Since the synchro sensor 9 is located on the non-rotating part of the machine, and the receiver 20 is on the rotating part, the electric circuits are equipped with ring current collectors located, for example, on the stem of the honing head 8 at the junction of it with the working carriage 7.

The honing machine operates as follows.

The workpiece 3 is fixed at one end in the cams of the hollow spindle 2 (swivel), and the other end - in the cams of the rest 4. This ensures that the axis of the part is aligned with the axes of the hollow spindle 2 and the stem of the head 8, for which the end of the part is fixed in the hollow spindle , verified by means of a caliper or indicator when the part rotates slowly. The end of the part fixed in the rest 4 is checked by combining the holes forming it with the generatrix of the tray 6 using a special template.

After introducing the honing head 8 into the hole of the part 3 by turning the rotor of the synchro sensor 9, rotate the rotor of the synchro receiver 20 and thereby radially feed the pads 23 with the bars 24. At the same time, the honing head 8 is informed by the carriage 7 of rotational and reciprocating motion and serves cutting fluid to the treatment area through a hose 12.

When honing deep holes of large diameter of the workpiece, rotation from the swivel in the range from 4 to 8 rpm can be reported (in order to eliminate the harmful effects of the weight of the head and ensure the correct geometric shape of the hole).

The scale for setting the angular positions of the rotor of the synchro sensor 9 can be calibrated directly in units of the diameter of the machined hole of the part 3. The initial installation of the rotor of the synchro sensor Y on the scale by the required value leads to an imbalance of the voltages induced in the windings of the rotors of the sensor and receiver, as a result of which in the windings and connecting circuits, currents appear that generate magnetic fields in the sensor and receiver. The sensor rotor is fixed in the desired angular position, and the receiver rotor, under the influence of a magnetic field, tends to occupy exactly the same angular position, driving the expanding element 16 (Fig. 3) or 21 (Fig. 4), which radially feeds the pads 23. when the required hole size is reached, the angular position of the rotor of the synchro receiver 20 is equal to the angular position of the rotor of the synchro sensor 9, the voltages in the windings of the same name are compensated, and the currents in the circuits decrease to almost zero Achen. This leads to the fact that the analysis unit 28, tuned to a minimum of input quantities, is triggered by acting on the machine operating mode change circuit 29 and on the signaling unit 30, indicating a change in the operating mode or the end of the processing cycle.

Claims (1)

f 3 a plug 14 fixed with a cooling lubricant in a hole in the receiver 1b of the cooling fluid, which in turn is rigidly fixed on the workpiece and rotating with the part o. The expanding element of the honing plate and can be made in several versions. For example, in the form of a cam ib with spiral-shaped working surfaces (Fig. 2, cSj, having a shank rigidly connected by a sleeve 1 / and fingers 18 to the shaft 1U of the rosin receiver M, or in the form of a cone 21 (Fig. 4) with a spline a shank connected by a slotted sleeve 22 to the slotted part of the rotor shaft of the 21U receiver (the cone 21 has a threaded section that interacts with the head housing b). In both cases, the contact surface of the pads 2o carrying Oruski 24 honing should be repeated orazuyuschuyu p The sensors of the sensor 9 can be connected to the 2U selsyn receiver (Fig. 0), for example, by means of electrical wires with current transformers 20, 26 and 2 / connected to their discontinuities, the secondary cables of which are connected to the analyzing unit 28. The analyzing node 28 is connected with the circuit 2 of changing the mode of operation of the machine (nursing, turning off and with the signaling unit dU. Since the selsyn sensor 9 is placed on the non-rotating part of the machine and the receiver 2U is on the rotating part, tsevymi current collectors disposed, for example, on the stem of the honing head 8 at the point of connection to the carriage 7. The working machine runs hopingovalny follows. The workpiece 3 is fastened with its one end in the cams of the hollow spindle 2 (swivel) and at the other end in the cams of the rest 4. This ensures that the axis of the part aligns with the axes of the hollow pin 2 and the stem of the head 8, for which the end of the part fixed in the floor the spindle is adjusted by means of a rack-height gauge or indicator when the part is slowly rotating. The end of the part fixed in lunette 4 is verified by combining the hole forming it with the generator of the tray b using a special template. After insertion of the honing head 8 into the hole of the part 3, the rotor of the synchro sensor 9 rotates the synchro receiver 20 and thereby performs the radial feed of the pads 23 with bars 24. Simultaneously the honing head 8 communicates with 818 5 10 15 20 30 35 40 45 50 55 60 65 5. By means of the carriage 7, rotational and reciprocating, and supplying coolant to the treatment area through the hose 12. When honing deep holes of large diameter of the workpiece, rotation from the swivel in the between 4 and 8 rpm (in order to eliminate the detrimental effect of the weight of the head and ensure the correct geometry of the hole). The scale of installation of the angular positions of the rotor of the synchro sensor 9 can be calibrated directly in units of diameter of the machined hole of the part 3. Initial installation of the rotor of the synchro sensor 9 on the scale by the required value li reduces the imbalance of stresses induced in the windings of the rotors of the sensor and the receiver, resulting in windings and the connecting circuits appear currents generating magnetic fields in the sensor and receiver. The rotor of the sensor in the desired angular position is fixed, and the rotor of the receiver under the influence of a magnetic field tends to occupy exactly the same angular position, driven by the expanding element 1b (Fig. 3) or 21 (Fig. 4), which performs the radial feed of the pads 23 Before reaching the required size of the hole being machined, the angular polarization of the rotor of the synchro receiver 20 is equal to the angular position of the rotor of the sync sync sensor 9, the voltages in the like windings are compensated, and the currents in the circuits are reduced to almost zero x values. This leads to the fact that the analyzing unit 28, which is set to the minimum of the input quantities, works by affecting the machine operation mode change circuit 29 and the alarm unit 30, indicating a change in the operating mode or the end of the processing cycle. Claims of the invention Honing machine with automatic dimensional control of the position of the expanding element, containing the control device of the machine cycle, the control unit of the radial feed of the bars through the expanding member, and the drive of the radial feed of the bars, characterized in that, in order to improve the accuracy of processing and control of the honed holes by reducing the length of the expansion element when machining deep holes and simplifying the design by performing the functions of feeding, monitoring and controlling and a single mechanism, a control apparatus and a drive control unit of the radial feeding bars made in the form of a synchro sensor, and in the node of the radial feed-and-bars a synsyn receiver is installed, the rotor shaft of which is connected to the expanding element. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 365242, cl. On 24V 33/06, 1973. 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