UA70593A - Device for straightening abrasive disks on face grdevice for straightening abrasive disks on face grinding machines inding machines - Google Patents

Abstract

Device for straightening the abrasive disks on face grinding machines contains two control tools moving in opposite directions and connected with rotating lever mounted on the shaft with the help of elastic elements. Two straightening tools are mounted to coaxially each to other and are fixed on the ends of elastic elements made in the form of two flat springs, on inverted to each other internal surfaces of which there are protrusions, with which interacts bilateral tapered element having the capability of longitudinal travel between said flat springs, and other ends of flat springs are fastened to the lever.

Description

Description of the invention

The invention relates to the field of grinding the end surfaces of cylindrical parts, preferably 2 to the grinding of the ends of the rollers of roller bearings on two-sided end grinding machines and the simultaneous adjustment of grinding wheels on these machines.

A well-known device for straightening grinding wheels on surface grinding machines with a magnetic table (see the diagrams for processing the ends of parts on page 101, fig. 7b, fig. V. Loskutov, Moscow, Mashinostroenie, 1985, 7th revised and supplemented edition). 70 The device for straightening grinding wheels on such machines is a metal case with a ruling tool attached to it, which is installed directly on the magnetic table of the machine. Such a device for straightening grinding wheels is not acceptable for two-sided face grinding machines.

The device for adjusting grinding wheels on two-sided face grinding machines, which is closest in its technical essence to the proposed one, is also known (see aut.sv. Mo285539, IPC B24853/06, 12 publ. 29.10.1970 Or., Byul. Mo33), which contains two rulers tools connected to the rotary lever located on the shaft with the help of elastic elements, while two elastic legs of the holder of the ruling tool are used as elastic elements, formed by making it split, having at one end a socket for fixing the tool, which is fixed by its faces, which are cut in opposite directions, and at the other end there are protrusions that interact with the adjusting elements installed in the upper part.

The disadvantage of this device is, first of all, that it is very difficult to adjust it to the size of the processed part, because it is necessary to adjust this size with four screws. When processing precise parts with a tolerance of, for example, 0.02 mm, it is absolutely impossible to achieve this on double-sided end grinding machines. In addition, the adjustment elements are located in the working area of the machine, which is closed by shields to protect against splashing of the cooling liquid, and to adjust the size, you will have to stop the grinding process.

Inconsistency in the location of diamond tools can lead to the fact that the working surfaces of the grinding wheels will be non-identical, as a result of which the part, passing in its movement between the wheels, can be skewed, which will lead to a violation of its geometry (non-perpendicularity of the end face to the forming cylindrical surface of the part). The listed disadvantages practically do not allow using this device for adjusting grinding wheels on two-sided face grinding machines in the process of processing parts. at

The basis of the invention is the task of improving the device for straightening grinding wheels on two-sided end grinding machines, in which, due to the coaxial installation of the straightening tools and bringing the adjustment to the size of the processed part outside the working area of the machine, with the simultaneous simplification of it, the possibility of straightening grinding wheels is provided circles in the process of processing parts without o stopping the machine to adjust it to the size of the parts with a simultaneous increase in accuracy and productivity 3o processing. in

To solve this problem, in the device for straightening grinding wheels on face grinding machines, which contains two oppositely installed ruling tools, connected to the rotary lever located on the shaft with the help of elastic elements, according to the invention, two ruling tools are installed coaxially "4, to each other and fixed at one end of the elastic elements, made in the form of two flat springs, on the inner surfaces of which are facing each other, there are protrusions with which a two-sided wedge-shaped element with the possibility of longitudinal movement between the mentioned flat springs interacts, and the other ends of the flat springs attached to the lever, it is optimal when the wedge-shaped element is a two-cantilever fork located on mutually perpendicular axes with the shaft, the two cantilevers of which form a two-sided wedge; the wedge-shaped element in the plane perpendicular to the plane of the location of the flat springs is limited by a guide line placed in the groove of the wedge-shaped element; it is equipped with 7 coaxial wedge-shaped elements with a handwheel with a limb, which can be adjusted to a given av! angle, the end of which interacts with the end of the wedge-shaped element facing it; it is equipped with upper and lower bars adjacent to two opposite and flat springs, while the upper bar is kinematically connected to the flywheel and has a protrusion designed to limit the movement of the flywheel. (Te) 20 The cause-and-effect relationship between the proposed set of features and the technical effects achieved during its implementation is as follows. c" As a result of the use of flat springs for fixing the ruling tools on them and providing remote (not in the working area) adjustment of the distance between two oppositely directed cutting edges of the ruling tools, by placing a double-sided wedge between these springs, which has the possibility of 25 longitudinal movement, the possibility of correcting is ensured of grinding wheels Y simultaneous high-precision in. grinding of parts, while the dimensions of the control device are reduced in the direction perpendicular to the working planes of the grinding wheels in the position of their correction. This implementation of the device for straightening grinding wheels on a two-sided face grinding machine allows you to completely automate the grinding process on these machines, to stabilize the technical process as much as possible by reducing the influence of the human factor on it to a minimum of 60, without stopping it for readjustments to the size of the processed part, thereby increasing the straightening productivity and improve the quality of processed parts.

The drawings in Fig. 1 show a general view of the proposed device for adjusting grinding wheels on a two-sided face grinding machine; in Fig. 2 - section A-A in Fig. 1; in Fig. 3 - section B-B in Fig. 1.

The device for straightening grinding wheels on two-sided face grinding machines contains a lever 1, because it is rigidly fixed on a shaft 2, elastic elements 4 in the form of two flat springs are attached to the lever 1 with two screws C, at one end of which two adjusting tools 5 are fixed with the help of threaded tails and nuts 6. On the internal surfaces of flat springs 4 facing each other, there are protrusions 7 with which a double-sided wedge 8 interacts, which has the ability to move between two flat springs 4, which keep it from transverse movement in one direction, while how to move it in another direction, perpendicular to the first, is held by the guide line 9, which is located in the groove of the wedge 8 (see Fig. 3). The other ends of the flat springs 4 are attached to the lever 1. The working part of the wedge 8 is made in the form of a two-cantilever faceted fork, and the points of contact of the wedge 8 with the protrusions 7 are mainly in the same plane as the cutting faces of the coaxially located guiding tools 5 (see Fig. 2). This design of the device 70 provides the hardness and reliability it needs. Moving the wedge 8 in the longitudinal direction to ensure the adjustment of the ruling tools 5 to the size H between the working surfaces of the grinding wheels 10 in the position of their correction thereby ensures the required size "/" of the processed part 11 (shown conventionally in Fig. 1). For the convenience of assembling the described device for straightening grinding wheels, two flat springs 4, a guide line 9, a wedge 8, an upper bar 12 and a lower bar 13 are pre-assembled and 7/5 tightened by a screw 14. on it limbo.

The device for straightening grinding wheels on a double-sided face grinder works like this.

When, in the process of grinding the parts 11, the working surfaces of the grinding wheels 10 are worn to the limit (usually 1/3...1/2 of the tolerance for the length of the processed parts 11), it is necessary to give the grinding headstocks 20 pulses of longitudinal movement by the amount of compensation for the wear of the grinding wheels 10.

At the same time, a device for adjusting grinding wheels is included in the work. At the same time, the lever 1 is turned on the shaft 2, and the control tools 5 are moved along the arc of the circle from the periphery of the grinding wheels to their center until they exit into the inner zone of the grinding wheels 10, after which the reverse is given and the lever 1 returns to its original position. The amount of compensation for the wear of grinding wheels 10 slightly exceeds the amount of their actual wear, so the excess abrasive is removed by straightening. This is repeated until the ruling tools 5 are worn to the limit value (this value is also approximately equal to 1/2... 1/3 " of the tolerance for processing parts 11). In this case, it is necessary to compensate for the wear of the ruling tools 5 by rotating the handwheel 15 to the required angle. At the same time, the wedge 8 will move forward in the direction of the guiding tools 5 and, acting on the protrusions 7, will spread the flat springs 4 with the guiding tools 5 attached to them. The whole process of adjusting the size of the processed parts 11, compensation for the wear of the grinding wheels 10 and the guiding tools 5 is carried out in the process of grinding with one turn of the flywheel 15, which can be removed from the working area as shown in the drawing (Fig. 1). yu

In addition, due to the selection of the lifting of the working part of the wedge 8 and the pitch of the screw pair wedge 8 - flywheel 15, it is possible to obtain any small compensation for the wear of the grinding tool 10, which will ensure

Зз5 The possibility of using the proposed device in any grinding mode, both rough and semi-finished.

Thus, the device proposed by us for straightening grinding wheels on double-sided face grinding machines provides the possibility of straightening grinding wheels in the process of high-precision processing of parts, which makes it possible to automate the process, increase its stability, almost "completely exclude the influence of the human factor on it and, as a result, to increase processing productivity at 7-3 s with a simpler and more reliable design.

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Claims (5)

The formula of the invention is not. : . . . 1. A device for straightening grinding wheels on face grinding machines, containing two oppositely installed ruling tools, connected to a rotary lever located on the shaft by means of elastic elements, which is characterized by the fact that the two ruling tools are installed coaxially with each other and fixed at one end elastic elements, made in the form of two flat springs, on the internal surfaces of which are turned 70 degrees to each other, there are protrusions with which a two-sided wedge-shaped element interacts, which has the possibility of longitudinal movement between the mentioned flat springs, and the other ends of the flat springs are attached to the lever. 2. The device according to claim 1, which is characterized by the fact that the wedge-shaped element is a two-cantilever plug located on mutually perpendicular axes with the shaft, the two cantilevers of which form a two-sided wedge. 3. The device according to claim 1, which is characterized by the fact that the wedge-shaped element in the plane perpendicular to the plane of the location of the flat springs is limited by a guide line placed in the groove of the wedge-shaped element. 4. The device according to claim 1, which is characterized by the fact that it is equipped with a flywheel with a limb installed coaxially with the wedge-shaped element, which has the possibility of adjustable rotation to a given angle, the end of which interacts with the end of the wedge-shaped element facing it. 5. The device according to claims 1, C, which is characterized by the fact that it is equipped with upper and lower bars adjacent to two opposite sides of flat springs, and the upper bar is kinematically connected to the flywheel and has a projection designed to limit the movement of the flywheel. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2004, M 10, 15.10.2004. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. (ze) (o) IF) "c) and - - and? -i ("c) 1 se) syu" 60 b5