SU1351744A1 - Arrangement for controlling the machining tool - Google Patents

Abstract

The invention relates to a machine tool industry and, can be used in automatic machines. The purpose of the invention is to increase accuracy by compensating for tool wear and temperature distortions. For this, the hydraulic cylinder 3 of the cross feed actuator is connected to the pressure and discharge systems of the working fluid through the spool mechanism, the spool 13 of which is rigidly connected to the corrective spring-loaded probe 14, and the housing 15 and the follower probe 19 are mounted on a spring-loaded additional slide 16 a drive cylinder; a main slide; 17. On the main slide, 17, contacts 22 are positioned for an additional slide and a wedge device 20 of its drive with a drive hydraulic cylinder. The main slider 17 is placed on the slider outlet installed on the caliper longitudinal feed. The cavities of the hydraulic cylinder of the rotary sector drive of the wedge device, the main and retraction slides, as well as the position contacts of the additional slider are connected to the software device. 5 il. with S (L / OE SP 4; ;;: .1

Description

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This invention relates to a machine tool industry and can be used in automatic machines.

The purpose of the invention is to improve accuracy by compensating for tool wear and temperature distortions.

Fig. 1 is a schematic diagram of the device; Figures 2 and 3 show the layout of the probes and the tool when machining parts in the form of rotating bodies, figure 4 is the same when machining flat parts; FIG. 5 is a diagram of a correction probe with an electric drive.

The device consists of a support 1 for a longitudinal feed, on which a ram- support 2 for cross-feed with a hydraulic cylinder 3 of the drive. On the slide 2, there is a rotary sector 4 with a hydraulic cylinder 5 of the drive, the cavities of which are connected to the software device 6. On the rotary sector 4 there are fixed tools 7 and 8 for roughing and finishing. The cavities of the hydraulic cylinder 3 are connected to the pressure system through channels 9 and 10 and to the system for draining the working fluid through channels 11 and 12 of the spool mechanism, the spool 13 of which is rigidly connected to a spring-loaded correction probe. The housing 15 of the golden piston mechanism is mounted on an additional spring-loaded slider 16 which is placed on the main slider 17, equipped with a hydraulic cylinder 18 of the actuator The cavities of the cylinder 18 are connected to the software device 6. On the additional slider 1b, a trace of the probe 19 is rigidly fixed. On the main slider 17 lips ovleno wedge device 20 controlling the position of the additional slide with the hydraulic cylinder 21 of the actuator, the cavity being connected with the programming device and the contacts 22 of the auxiliary slider position is also associated with the programming device. The main slider 17 is installed on the slider 23 of the outlet, which is placed on the support 1 of the longitudinal feed and is equipped with a hydraulic cylinder 24 of the drive, the cavities of which are connected to a software device. Next probe 19 is in contact with the workpiece 25 to the processing tool-. ment, and the corrective probe 14 is located behind the processing tool in his wake. In the case of electric drive caliper 2

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transverse feed on the additional slider 26 (figure 5) contacts 27 and 28 are established, with which the cams 29 and 30 of the correction probe 31 interact. The drives of the rotary sector 4, the wedge device 20, the main slider 17 and the slider 23 of the outlet can also be electric.

The position of the main slide 17 can be controlled by a follow-up copying system, a CNC control system, or any other system specifying the dimensions and profile of the product.

The device works in j format.

In the initial position through the software device 6, the working fluid is fed into the upper cavity of the hydraulic cylinder 24, the rod of which retracts the slider 23 to the lower position. The correction probe under the action of the spring displaces the spool 13 to the upper position, which opens the channel 9, the working fluid enters the upper cavity of the hydraulic cylinder 3, the piston moves down and retracts the caliper 2 with the tool 7 to the lower position. After installation of the workpiece through the software device 6, the working fluid is supplied to the lower cavity of the cylinder 24, the piston of which moves the slider 23 to the upper position on the supports of the longitudinal support 1. The correction probe 14 contacts the workpiece and the spool 13 stops and stops. The spool body 15 continues to move.

upwards, the channels 10 and 12 open. The working fluid enters the lower cavity of cylinder 3, which is ocyij; ecT- is the transverse feed of the slide 2 with the tool 7. Size of treatment

it is defined by the position of the body 15 of the spool mechanism. When the specified size is reached, the housing 15 stops as the slider 17 stops. Correction probe 14

moves along the machining track

tool and upon reaching a given size (tool output at a given size) sets the spool 13 relative to the housing 15, so

that all channels are blocked. To resize processing through pro-. The grammer device 6 supplies the working fluid to the hydraulic cylinder 18, which moves the main slide 17 and.

therefore, the housing 15 spool mechanism. When the housing 15 moves upwards, the channels 10 and 12 open, the liquid begins to flow into the lower cavity of the hydraulic cylinder 3 and merge from the upper one, the cross feed support 2 begins to shift upward until the machining tool 7 comes out to a new, smaller processing size, when the correction probe 14 moves the spool 13 in the position where all channels are blocked. By shifting the body 15 of the slide mechanism downward, the channels 9 and 11 open, the support 2 moves down, retracts the tool from the part axis to the installation of a new, larger machining size. During processing, an increase in processing size due to tool wear or a decrease in j due to the temperature lengthening of the processing tool, or a change in the specified processing size for other reasons, is possible. When the processing size is reduced relative to the preset, the correction probe 14 moves up and the spool 13 opens channels 9 and 11, the working fluid enters the upper cavity of the hydraulic cylinder 3, the machining tool is retracted from the workpiece, the processing size increases. At the time of installation of a given size, the correction probe T4 sets the spool 13 to a position in which all channels are closed and the caliper 2 is fixed in the new position. When the machining size deviates from the specified size. Towards its increase, the probe 14 moves the spool 13 down, the channels 10 and 12 are opened and the position of the processing tool is adjusted to the size of the processing. The position of the housing 15 spool mechanism, i.e. the setting of the processing size is performed by the software device 6 by supplying the working fluid in the cavity of the hydraulic cylinder 18, the piston of which moves the main slider 17 according to a predetermined program. The main slider moving program can be set by the following copying system, CNC system or any other system. The device provides automatic multi-pass processing of variable profile products. The software device is set about

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fil the product and the final size of roughing. When the retracting slide 23 moves into working position, a correction probe 14 and then the follower probe 19 comes into contact with the workpiece with the raw surface of the workpiece. The probe 19 rests against the surface of the part to the machining tool and stops further extension of the body 15 of the slide mechanism, stopping the extension of the additional slide 16, although the main element 17 will be advanced to the position corresponding to the final size of the roughing. The feed rate of the passage is determined by the difference in the positions of the correction and follower probes and can be changed by reconfiguring the machine by shifting the follower probe on the additional slider 16. After stopping the supply of the additional slider 16 and with it of the housing 15 of the slide mechanism, the process tool continues until when the corrective probe moves the spool 13 to the position of blocking all channels. When moving the extra. Slide 16 relative to the main slide 17, it closes the contacts 22. A signal is sent to the programmer to require another draft pass. If the rough pass through the entire profile of the product is carried out without contact of the follower probe with the workpiece, then the additional slider will not move, the contacts are not closed and at the end of the passage the working fluid is fed through the software device into the hydraulic cylinders 5 and 21. The hydraulic cylinder 5 turns sector 4, produces tool change for finishing,

g a the hydraulic cylinder 21 moves the wedge 20 to the left, the additional slider 16 with the housing 15 is advanced by the amount of the lateral feed of the finishing pass. At the end of each passage, for returning the slide 1 of the longitudinal feed, working fluid is supplied to the upper cavity of the hydraulic cylinder 24, which retracts the slide 23 and with it an additional slide and the body of the slide mechanism. The probe 14 comes out of contact with the product and under the action of the spring moves the spool 13 relative to the housing 15, the channels 9 and 11 open, the working fluid

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enters the upper cavity of the hydrocylinder 3, the support 2 retracts the machining tool from the part.

When the device is electrically driven, the correction probe 31 (Fig. 5) shifts downward as the processing size increases, and with its cam 29 closes contacts 27, as the processing size decreases, it shifts upwards and closes contacts 28 by means of cam 30. correspondingly, changes the position of the processing tool. With a corresponding slider, on which the follow- ing probe is rigidly fixed to the preset machining size, the intended strokes 27 and 28 are open. To change the processing size of the software device changes the position of the full. Zun 26, contacts 27 or 28 are located 20 on one of the cams of the probe 31, the voltage from the closed contacts to interact with the surface to be processed to the processing tool during its movement, and the body of the spool mechanism, at. This corrective probe is spring-loaded relative to the retraction slider and is designed to interact with the machined surface behind the machining tool in its wake, and the wedge control device for the auxiliary slider and its position contacts are located on the main slider, and the hydraulic slider of the main slider and retraction slider are connected to the software device.

on the drive drive cross feed, which changes the position of the processing tool.

Claims (1)

Formula from. The device for controlling the machining tool mounted on the cross feed support, which is placed on the longitudinal support supply, including tracking and correction probe, hydraulic actuators of longitudinal and transverse feed supports and software device, characterized in that, in order to improve accuracy, the hydraulic drive cylinder of the cross support is connected to pressure and discharge systems through a spool mechanism introduced into the device, the device is also equipped with installed on the caliper of the longitudinal feed with a slider of the outlet and the main slider placed on it with an additional the slider on which the follower probe is rigidly mounted, designed to interact with the machined surface before the machining tool along its movement, and the body of the slide mechanism, with. This correction probe is spring-loaded with respect to the retraction slider and is designed to interact with the machined surface behind the machining tool along its track, while the main slider has a wedge control device for the additional slider and its position contacts, the hydraulic cylinders of the main slider drive and the retractable slider are connected to the software device. /four FIG. 2 25 dl / gL 2728 X -29 -30 Editor M. Kelemesh Compiled by A. Semenov Tehred L. Serdyukova Proofreader A. Obruchar Order 5524/11 Edition 786 Subscription VNIIPI USSR State Committee for inventions and discoveries .113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG. five