SU848117A1 - Apparatus for producing code mask by rolling-on method - Google Patents

Description

one

The invention relates to a device for metal forming and can be used to obtain code masks using the knurling method.

A device for producing coded masks by the knurling method is known, comprising beds, driving and driven shafts and a mechanism for synchronizing the rotation of the shafts Til.

It is also known to use a knurling device for producing a coded mask, which contains a drive shaft with a pinion gear mounted on a frame, a driven shaft with a mandrel and driven gear attached to it, and the C tool. The disadvantage of these devices is the poor quality of the printed print.

The purpose of the invention is to improve the quality of manufacture of the code mask by increasing the accuracy of the geometric shape of the optical elements applied to the workpiece and the purity of their surface.

The goal is achieved by the fact that the device for the manufacture of a code mask by the method of knurling, containing the leading gear located on the frame, the driven gear

With the mandrel fixed on it and the driven gear, and the tool, there is a slide covering the drive shaft, the swing axis of which is fixed on the mandrel, and the working tool fixed on the wings with the possibility of combining the most distant point of its working surface with the swing axis

10 scenes, while the difference in the number of teeth driven and driving gears is expressed by an odd number.

FIG. 1 shows the proposed device, a general view; in fig. 2 15 section A-A in FIG. one; in fig. 3 section bb in fig. 2

The device contains your leading 1 with the workpiece mounted on it 2 coded drum and block 3 leading

20 synchronizing gears. The shaft is preloaded by the center 4. In the carriage 5 there is a driven shaft 6 with the driven gear 7 and the mandrel 8 fixed on it, on which the axis 9 with the tool 10 and the slide 11 is mounted. The carriage is fixed on the frame 12. The position of the tool 10 is adjusted by a screw 13,

The rocker 11 covers a cylindrical gap between the code roads 30 K1 of the workpiece 2.

The number of teeth of each gear rim of the synchronization master unit 3 is equal to the number of optical elements on the corresponding code track of the workpiece, and the number of teeth corresponding to their interchangeable synchronized driven gear 7 differs from the number of optical elements, for example, less than one tooth.

The highest point of the tool 10 is set at a radius equal to the radius of the initial circumference of the driven gear, and at the moment it intersects the planes passing through the axes of the shafts, the distance from it to the axis of the drive shaft is equal to the radius of the initial circle of the leading synchronizing gear. The center of rotation of the axis 9 is also located at the initial diameter of the driven gear. The diameter of the workpiece of the code drum is larger than the diameter of the initial circumference of the drive gear by an amount approximately equal to two recesses of the optical elements.

The device works as follows.

The drive shaft 1 is rotated, and together with it the workpiece 2 of the code drum and the block 3 of synchronizing gears. From one of the gear rims, for example from the first (counting from left to right), gear 1, shaft b and tool 10 receive rotation, the highest point of which describes a circle with a radius equal to the radius of the starting circle of the driven gear 7, while remaining at the center of rotation axis 9, Tool 10 during the period of contact with the workpiece of the code drum moves relative to it always along the radius to the center of the workpiece and back without relative slippage and rotation, leaving an imprint on it corresponding to the shape of the tool . The difference in the number of teeth of the leading and driven gears leads to the displacement of the tool for each revolution by the amount of this difference, in our case - by one tooth. Thus, after the workpiece has completed a rotational speed equal to the number of teeth of the pinion gear, a code mask is applied to it, for example, in the form of concave spherical mirrors.

To apply the code mask on the next track, the carriage is moved to the right, the interchangeable driven gear is changed, the gear is engaged with the corresponding drive gear and the nano, from the code mask to the next track, and so on.

The knurling of the optical elements of the code mask can be performed at relatively high speeds with a tool of any configuration.

With a cleanness of making a tool according to the 6th class, an imprint is obtained at about 8th grade of purity; when making an instrument with a purity of 8th grade, the print is obtained from the 9th grade, and with a cleanliness of the tool of the 12th and 13th classes, the cleanliness of the print corresponds to clean tool manufacturing.

Claims (2)

Invention Formula A device for producing a code mask by the knurling method, comprising a drive shaft with a pinion gear placed on a frame, a driven shaft with a mandrel and a driven gear attached to it, and a tool that, in order to improve the quality of the code mask manufacturing by improving the accuracy of the geometrical the forms of the optical elements applied to the workpiece and their surface cleanliness; it is equipped with a slide covering the drive shaft, the swing axis of which is fixed on the mandrel, the working tool is fixed on the slide with possible Tew align the outermost point the teeth of its working surface with a geometric axis of swing of the scenes, while the difference in the number of teeth driven and driving gears is expressed by an odd number. Sources of information taken into account in the examination 1, USSR author's certificate No. 313600, cl. B 21 N 7/14, 10.05.65. 2. Overview GOSINTI Marching of cylindrical and flat parts by knurling. № 4 / 8-72, M., 1972, p. 19, FIG. 10 (prototype).