SU1458161A1 - Arrangement for pre-set feed of duplicating grinding machine - Google Patents

Description

(21) 4273566 / 31-08

(22) 07/01/86

(46) 02.15.89. Bup. № 6

(71) Kiev Polytechnic Institute. 50th anniversary of the Great Oct. Brno

socialist revolution

(72) Yu.V. Petrakov and V.K. Frolov

(53) 621.924.1 (088.8)

(56) USSR Author's Certificate No. 1230802, B 23 B 19/12, 1984.

(54) DEVICE OF TASKING FEEDING OF COPY-GRINDING MACHINE

(57) The invention relates to a machine tool industry and can be used as a drive for rotating a part, in copying machines for processing the camshafts of internal combustion engines and other similar parts restored by fusion welding. The aim of the invention is to simplify the design of the device and reduce its size. The device contains a copy support with a rotary throttle installed on it, controlling the rotation speed of the spindle, controlling the cam, an oscillatory movement mechanism of the spindle, an oscillating speed control device, an electro-hydraulic processing mode distributor included in the hydraulic motor drain line, and controlling the position of the control cam, table and copiers. The spindle oscillatory movement mechanism is integrated in the form of an electro-hydraulic reversing distributor and a copy support position sensor associated with it, and the oscillatory speed control device is made in the form of a rotating hydraulic throttle fixed on the table, the rotational axis of which is connected kinematically with the copy support at the same time, the electro-hydraulic distributor of the reverse is included in the drain and pressure lines of the hydraulic engine and is installed on the table machine and the distributor .rezhima processing vsholnen three position and is connected to a rotary throttle control rotation speed of the spindle and a rotary throttle control speed oscillating movement. 4 il.

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The invention relates to a machine tool industry and can be used as a rotational drive of a part in copying and grinding machines for machining camshafts of the internal combustion engine restored by welding and other similar parts.

The purpose of the invention is to simplify the design of the device and reduce its

dimensions due to the elimination of bulky hydraulic cylinders.

FIG. 1 shows the device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 - hydraulic circuit of the device; in fig. 4 is a variant of the electrical circuit of the device.

The driver feed unit contains a hydraulic motor 1 located

31458161

on the table 2 of the machine and the associated kinema. In the initial state by a copying gear, for example, the slide port 4 is located in an open position, with a copier shaft 3, installed (not shown). At the same time, relays 25 and 19 (KA2 in FIG. 4 and KAZ control cam) and electromagnets 26 and 20 (see FIG. 4) are mounted on the copy support caliper 4. During the cycles of the sensor 17 and the sensor 22, the axes of the copier shaft are placed. on 5 with an emphasis, and on the copying support (fig. 4, YA2 and UAZ) are turned off, in the report 4 the rotary is rigidly fixed, as a result of which the shaft of the hydraulic motor 1, the throttle 6 of the speed control is fixed. When the copier shaft 3 is copied, the interaction caliper 4 is moved to its working position with its lever 7, the cam 5 is closed by a control device of the shaped surface of the machine controller (not shown). the cycles of sensor 22 (in Fig. 4 SQ19), engaged with the cam shaft 3 of the friction 15, turns on the relay 25 (in Fig. 4, KA2), in transmission, consisting of a spring-loaded result, which closes its mounted disc brake 8. taps ( 4 KA2.I, КА2.2) and the table 2 of the machine are rigidly fixed divider 12 connects the hydraulic rotary choke 9 of the cavity 1 and the hydraulic motor of the throttle speed control device 20 September Kopirovalnm oscillation of the shaft 3 is driven in the oscillatory motion, the rotation axis 10 of rotation. The law of the master feed, in which the kinematically connected lever is determined by the law of motion of gami 11 with a copy caliper 4. copy caliper 4. As a result, on the table of the machine are placed the hydraulic fluid rotating hydraulic motor (due to distributors 12 and 13 25 shaped profile copiers copier, respectively, processing mode and revala) copy support 4 overturning. Goes to the extreme position.

The electrical part of the device closes the contacts of the sensor 21 (does not include a parallel connection of Fig. 4 SBI). Relay 23 is turned on (pairs of sensors 14 of copiers and zo of Fig. 4 KAI), electromagnet position sensors of table 15 (in Fig. 4, nit 24 (Fig. 4 YA1) of the distributor SQ1 - SQ8), (in Fig. 4 SQ9 -SQ16), 13 to the hydraulic motor 1 changes the direction of rotation and parallel with the sensor 16 connected to them. With a further position of the control cam (on the rotation of the copying shaft 3, the copy is shown in Fig. 4 SQ17) and the sensor 17 of the retracted j. The rotary caliper 4 first removes the copy caliper 4 s and then again approaches (in FIG. 4 SQ18). These sensors are connected to their extreme working position in series with the sensor 18, resulting in a repetition of the grinding headstock (the effect of the sensor 21 (in FIG. 4 of FIG. 4 SQ20) and a relay 19 (in FIG. 4 of KAZ) 40 SBI). The relay 23 (in Fig. 4 KAI) turns off the control of the electromagnet 20 (in fact, the distributor 13 returns - Fig. 4 UAZ) to the distributor 12. Sensor. c in its original position, changing the direction of rotation of the hydraulic slide support (in Fig. 4 SB1) and gate 1 by changing the extreme working position of the 21. The oscillatory movements of the picker 22 return position sensor continue until the pyro The support (in Fig. 4 5Q19) until a command is received from the sensor is connected in series to the circuit of the 18-position of the grinding headstock (per relay 23 (KAI in Fig. 4) control- Fig. 4 SQ20). In this case, the electromagnet 24 (in Fig. 4, the contacts of the relay 19 (in Fig. 4 KAZ) and UA1) are closed by the distributor 13 and the relay 25 (the relay 25 (in Fig. 4 KA2) control of the second elec- tor is disconnected for g). KA2). The distributor 12 connects the solenoid 26 (in FIG. 4, UA2) distributes the cavities of the hydraulic motor 1 and the divider 12, respectively. Relay 23, throttle 6. The law of the driver supply at 25, 19 (in Fig. 4, KA1, KA2, KAZ), the connection is determined by the profile controlling the control system 27 of the cam 5, the direction of rotation. does not change, since the relay 23 (in figure 4 KAI) is blocked

The device for setting the feed from the working contacts of the relay 19 (in Fig. 4 KAZ.2). melts as follows. Until the end of processing by command from

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Claims (1)

Claim A master feed device for a copy-25 shaft grinding machine containing a copy support with a rotary throttle for controlling the speed of rotation of the spins mounted on it 61 6 oscillation speed control device, an electro-hydraulic distributor of the processing mode included in the drain line of the hydraulic motor, as well as position sensors of the control cam, table and spindle copiers, characterized in that, in order to reduce dimensions and simplify the design, the oscillatory mechanism of the spindle is made in the form of an electro-hydraulic reverse distributor and a copy support position sensor associated with it, and the oscillatory speed control device is made in the form of a rotary hydraulic throttle mounted motionlessly on the machine table, the axis of rotation of which is kinematically connected with the copy support, the electro-hydraulic distributor of the reverse included in the drain and discharge lines of the hydraulic motor and mounted on the machine table, and the electro-hydraulic distributor of the processing mode made in three positions and connected to the rotary throttle control the speed of rotation of the spindle and dividing and control cam, mechanism 30 rotary throttle control kokolebatelnogo spindle growth of the movement of the vibrational motion. fi9.1 BufA a KL a B e d FIG. 3 FIG. A