SU1217509A1 - Arrangement for checking position of pressure screw of rolling mill roll setting mechanism - Google Patents

Description

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 The invention relates to rolling production and can be used in the installation mechanisms for pressing screws of working stands of metal rolling mills.

The purpose of the invention is to increase the accuracy of controlling the position of the pressure inta by taking into account the thread wear of the wine and nut.

Figure 1 shows the proposed structure, General view; figure 2 - the same, the type of reconciliation.

The device for controlling the position of the clamping screw comprises an atomic housing of the angular position rigidly mounted on the upper end part of the pressure screw 2 coaxially with it. and the shaft 3 of the angular position sensor is fixed to the blade 4 of the right angle. Rollers 5 are pressed to the side surfaces of the blade 4, fixed in the guide cassette 6, which can move in a plane, perpendicular to the axis of the pressure screw 2. The base 7 of the guide cassette 6 is rigidly fixed to the frame 8 of the metal rolling mill. A movable cassette 10 is mounted on the axle shaft 9 of the rollers 5 and can be moved along the axes 9. The movable cassette 10 is rigidly fixed with a housing 11 and 1: a linear screw of the pressure screw 2, and a linear position sensor shaft 12 is connected to gear 14 by means of a backlash coupling 13 rail 15, which is mounted on the end surface 8 of the blade 4. By the springs 16, the movable cassette 10 is connected to the guide 6 so that the gear 14 is connected to the rail 15.

The device works as follows.

During the operation of the mill roll setting mechanism, the screw 2 performs rotational and translational movements. The rotational movement repeats the body 1 of the angle position sensor. The shaft 3 of the angle position sensor is fixed against rotation by the rollers 5 of the guide cassette 6, between which the blade 4 is moved, rigidly attached to the shaft of the sensor. The guide cassette 6, fixing the rotational position sensor shaft 3 against rotation, ensures accurate control of the angle of rotation of the pressure screw without any errors.

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The translational movement of the pressure screw is transformed through the mating of the toothed rack 15 - gear 14 - backlash coupling 13 to the rotational movement of the shaft 12 of the linear position sensor. In this case, the linear position sensor housing 11 mounted on the movable cassette 10 makes limited movements.

together with the movable 10 and with the guide 6 cassettes. On the cassette 6. The movable cassette 10 is installed only in the plane perpendicular to the axis of the pressure screw. Sensor connection

the linear position with the toothed rack 15 and the guide cassette 6 provides for the control of the linear position of the pressure screw.

The magnitude of the signals of both sensors

varies with rotational and translational movements of the pressure screw so that each angular position of the pressure screw within one full turn and each linear

The position of the pressure screw within one thread pitch corresponds to its own signal value.

The difference in the sensor signals remains unchanged due to the fact that for one full turn of the pressure screw each sensor makes one full turn of the sensor housing relative to the sensor shaft. With the appearance of wear in the thread of the screw and nut

To the forward movement of the screw due to its rotation, the linear movement of the pressure screw is added by sampling an additional clearance formed in the thread as a result of wear. This leads to a gradual additional change in the signal of the sensor linear movement in such a way that each linear position of the screw within

one thread lead corresponds to the former value of the sensor signal with the addition of a value proportional to the amount of wear. As a result, the initial difference in the signals of both sensors changes by this value. The change in the initial difference between the sensor signals is a measure of the screw and nut thread wear. By changing the initial difference

sensor signals estimate the tolerance of the amount of thread wear of the screw and nut without disassembling the mill roll installation mechanism, and the total

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this change with the signal of the angle position sensor screw, is obtained the value by which the exact value of the roll solution is determined.

A device for controlling the position of the pressure screw of the mill roll setting mechanism allows production of

To measure the thread wear of the screw and nut without disassembling the mill roll installation mechanism and the time costs associated with 9TIM, which leads to an increase in the use of the mill for metal rolling and an increase in the production of rolled metal.

Editor M. Miteiko

Order 1032/12 Circulation 518 Subscription VNIIPI USSR State Committee

 for inventions and discoveries 113035, Moscow, Zh-35, Pa1Sh1Ska nab. 4/5

Branch ShSh Patent, Uzhgorod Project 4 st.

Compiled by M. Korovin

Tehred A. Babinets Proofreader A. Obruchar

Claims (1)

DEVICE FOR CONTROL OF POSITION SCREW POSITION OF THE ROLLER ROLLER INSTALLATION MECHANISM, including-. an angular position sensor for the pressure screw with a housing fixed on the upper end of the pressure screw and a shaft rigidly connected to the blade connected to the rollers of the guide cassette mounted on the stand frame, characterized in that, in order to improve the accuracy of monitoring the position of the pressure screw by taking into account wear of the screw and nut threads, the device is equipped with a linear position sensor, made in the form of a housing freely mounted on the axes of the rollers of the guide cassette, and an output shaft with gear, and the blade is made with a rake gearwheel interacting with said gear, wherein the gear ratio of the rack gear is selected so that one revolution of the sensor shaft corresponds to the thread pitch of the compression screw. / SU „„ 1217509