SU40132A1 - Milling machine for continuous milling products - Google Patents

Description

When working on ordinary milling machines, the table delivers the workpiece in the direction opposite to the circumferential speed and force of the cutter, and after the required product processing along the entire length, the machine stops, the processed product is removed, the table is retracted, the new product is put in, and only after that . When processing products of small length, such auxiliary operations can take up to 50% of the total work time of the flock. For a more complete use of the operating time of the machine, some measures are used, for example, the processed products on the machine table are placed in a chain, so that several products with one cutter are processed at once by the table. There are such mechanisms of giving to the milling machine which give products in the continuous movement. It is absolutely not necessary to stop the machine to remove the processed products and install new ones.

In this kind of machine, the supply of products is dried in a circle. However, if you simply arrange a number of products along the rim of a cylindrical table, the products will be milled not along a straight line, but along an arc whose curvature will be greater, the smaller the diameter

feed table and the longer the workpiece.

According to the invention, in order to eliminate such a drawback and to obtain a flat surface when machining around the rim of the circular table of the machine, rotary clamps are provided, which simultaneously with the rotation of the table receive rotary movements around their axis by means of a rotating fist washer.

In FIG. 1 shows a diagram of the proposed machine table device; FIG. 2 is a schematic of individual moments of milling using the proposed device.

The working circular table of the machine is made in the form of a rotating drum 7 (Fig. 2), along the rim of which a row of clamps 2 are radially located, which can swing about their axis. The swinging limits of the clamps are limited by the width of the groove cut in the body of the drum-table / and in which each of the clamps 2 is placed. At the beginning of the work (Fig. 2), when the product approaches the cutter, the clamp 2 must be in its rightmost position. During rotation of the drum stand / and the cutter in the directions shown by the arrows, the action of the cutter on the product, and consequently, on the clamp 2, will deflect the latter to the left. To hold the clamp 2 in the proper position, to the left of the clamp 2, a cam washer 3 is placed (Fig. 1), on the omnial axis 6 with which the gear 4 sits, coupled with the stationary gear 5. The pin 5. The engagement is shown internally, but it can be performed and outdoor. When the drum-table / gear 4 rotates, it will roll along the ring gear 5, i.e. it will perform a planetary motion composed of your turn along with the drum-table 7 and at the same time rotate around its own axis 6; as the drum table 7 rotates, the cam washer 3 will release the clamp 2, and the cutter’s force will deflect it to the left, and when the leftmost point is under the mill, the cam washer 3 will completely release the clamp 2, and the cutter’s force will deflect it into extreme left position (Fig. 2). After complete processing of the product and release of clamp 2 from under the milling cutter, clamp 2 will continue to oscillate further, since the gear all the time rolls over the gear ring 5. The feed speed during milling is usually small, and the worker will have no difficulty removing the clamp 2 -handled product and put new, do not stop the machine. All furs: Niem machine feed should be designed for a certain maximum length of the workpiece, handle the same product with a length less than the calculated, will not present any difficulties. The diameter of the drum table 7 must be as large as possible, as this reduces the curvature of the arc, which must be destroyed by the proposed milling machine. In case if only one row of clips 2 was mounted on the drum table7 and only one milling cutter was on the machine spindle, then the space between two adjacent clips 2 would be idle. Therefore, to increase the productivity of the machine, it is advisable to place two or three rows of clamps 2 on the drum table 7, and the corresponding number of cutters on the spindle, shifting one row relative to the other by half the interval for two rows and one third for three. If necessary, it is also possible to provide the drum table 7 with a device for changing the width of the grooves in which the clips 2 swing, for example, stop pins or swiveling cheeks. neither between the centers of the drum table 7 and the milling cutter, as well as for working with mills of different diameters, the machine will need to have a set of interchangeable fist washers of 3 different profiles. It can be used especially in the mass production of small parts, which, moreover, after milling, are subjected to further processing, such as hardening, grinding, etc., which usually allows for allowance. Milling products using a round table, characterized in that radially located and swivel clips 2 are used to treat the planes of the products in case of fixing them around the table rim, which simultaneously with the rotation of the table receive rotary movements around their axis by means of a rotating fist washer 3. For possibility of changing the distance The proposed method of milling The subject invention. Continuous milling machine

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