SU1209415A1 - Machine for working out-of-round surfaces - Google Patents

Description

The invention relates to a machine tool industry and can be used for grinding camshafts and camshafts.

The purpose of the invention is to expand technological capabilities and simplify the control system.

The purpose of the invention is to account for the message of the detail of the additional movement that is not related to the spindle rotation cycle, which makes it possible to use the control system of the grinding headstock to adjust the cam size when adjusting or changing to another processing size.

Fig, 1 shows the machine, a general view; FIG. 2 is a section A-A in FIG. I; FIG. 3 is a section BB in FIG. 2.

The machine has a spindle head 1 installed with the possibility of swinging on a fixed axis 2 mounted on a table 3, which is mounted on the rails of the base 4, a grinding head 5 with an abrasive wheel 6 and a drive 7 of the headstock. The headstock 1 includes a spindle 8, on which a copier 9 is installed by means of a sleeve 10 mounted on the spindle with the possibility of rotation around the axis. The sleeve 10 is equipped with a gear coupling 1I connected to the spindle by means of a slot, the gear coupling being spring-loaded to the sleeve 10 by means of a spring 12, the sleeve 10 also equipped with an overtaking coupling 13 fixed on the housing 14 of the spindle 8, the coupling 13 connects the sleeve 10 with the body 14 of the spindle 8, with the direction of the turning of the spindle, opposite to the direction of cutting.

Copier 9 is associated with roller 15, installed in slider 16 by means of axis 17. Slider 16 is mounted in the housing of spindle head 1 on ball guides 18, and the straightness of the slider's movement and selection of gaps can be adjusted with screws 19. Slider has an additional roller 20 which interacts with the linear copier 21, the latter is rigidly fixed on the rod 22 of the hydraulic cylinder, the housing 23 is rigidly connected with the body of the spindle head 1, the profile of the linear copier 2I reflects the law of the product feed to the tool. Stem control 22 wasp

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It is realized by means of strips 24 and sensors 25 and 26, and the position of coupling 11 is monitored by sensor 27. Tension in the copier system is reached by spring 28,

In addition, on the rod 22 of the hydraulic cylinder install two (or more) linear copiers 21, placed along the rod 22 of the hydraulic cylinder from different sides. The rod 22 is provided with a gear 29 associated with the DiTOK rail 30 of the rotation drive 3. The latter is made in the form of a hydraulic cylinder. The rod 30 is controlled by means of strips 32 and inductive sensors 33 and 34. Spindle 8 is equipped with a driver cartridge 35, and a tailstock 36 is installed coaxially with it. In the cartridge and tailstock, part 37 is fixed.

The machine works as follows.

The drive 7 of the headstock of the product informs the rotation of the spindle 8 and, accordingly, of the part 37. Copier 9, by contact with the roller 15, pumps the spindle head with the product around the axis 2, thereby the abrasive wheel 6 forms a profile set by the copier at a fixed position of the spindle. foveal grandmother. The supply (plunging) of the product onto the abrasive wheel is achieved by displacing the roller 15 together with the slide 16 along the guide 18 of the linear copier 21. To supply the oil, the oil is fed into the upper cavity of the cylinder body 23 and the stem 22 with the copier 21, shifting the slide 16. The profile of copier 21 reflects the law of supplying the product to the tool, as if an additional feed movement is introduced into the copier movement of the part and if the inductive sensor 26 is activated, copier 21 will provide the nominal size of the workpiece. The processing cycle is complete.

To process the next cam of the workpiece, which is usually offset in angle relative to the already machined one, the drive 7 of the workpiece is reported to reverse the rotation, the clutch 13 of the overtaking stops and the body 14 of the spindle 8 is rigidly connected to the hub 10. The gear coupling II allows the spindle to continue rotating, overcomes the force of the spring, jumps from tooth to tooth. The number of jumps of the coupling movements along the axis is recorded by the sensor 27, which includes the drive

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the estimated number of tim is reached from the reciprocal of the grinded

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In addition, for grinding parts of a different profile (or processing a product with other feed modes, for example, only roughing), there is another linear copier 21 on the rod 22. To install it into the upper cavity of the rotation drive 31, oil is supplied, the rod rail 30 due to gear 29 rotates rod 22 and, at the command of inductive sensor 34, begins the processing cycle.

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FIG. 2

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Claims (2)

1. MACHINE FOR PROCESSING SMALL SURFACES, including a grinding headstock, a spindle head mounted with the possibility of swinging, a roller mounted on the spindle and designed to interact with the copier, characterized in that, in order to expand technological capabilities and simplify the control system, the roller is placed on inserted into the machine, installed with the possibility of movement perpendicular to the axis of the spindle, to the crawler, equipped with an additional roller designed to interact with a linear copier, the profile of which is made in accordance with the law of supplying the product to the tool, and the machine is equipped with a hydraulic cylinder, the body of which is rigidly connected to the headstock, and a linear copier is fixed on the rod. 2. Machine according π, 1, l and m of the - sistent _with the fact that it snab- ® wives additional linear cams mounted on the cylinder rod, and the rod is provided with its rotation drive. SU .., 1209415