SU420415A1 - THE DEVICE TO THE MILLING MACHINES FOR HANDLING OF TRACKED PRODUCTS - Google Patents

Description

one

The invention relates to a machine tool industry and will find use in the manufacture of gears.

According to the main author. St. No. 271254 are known devices for milling machines for machining gear products with a complex geo-metric surface of cuts, its part.

The device is equipped with a copier consisting of two cheeks, mounted on the base, installed at the required angle of the helix of the wheel being cut, and located on a common axis with the bar fixed by means of racks and calibrated in height on the bushings mounted on the milling machine’s trunk.

However, when processing teeth in several passes on such devices, fast restructuring from one pass to another is not possible, and when processing long and thin products, cutting is difficult, since the free end of the product is not pressed in by the center.

To achieve this goal, the device is equipped with a board that moves along a C-shaped groove, made in the suspension, and a carrier bar, installed in the T-shaped groove, made in the saddle. Pa conus mandrel with a clamp and bolts fixed mobile center. This enables fast changeover from one pass to another and the processing of long and thin parts.

Pa figs. 1 is a diagram of the device; in fig. 2 shows a section along A-A in FIG. one; in fig. 3 shows a section along B - B in FIG. 1. The universal divider head 1 is mounted on the table 2 of the milling machine and connected to the lead screw 3 of the milling machine with the help of a guitar 4 with interchangeable shchestrenny. Taper mandrel 5 is rigidly fixed in

The spindle of the dividing head by means of two nuts 6, screwed onto the threaded part of the dividing head of the dividing head and moving one into the other along the thread. The cut product 7 is fixed in the cone mandrel, the free end of which can be pressed by the movable center 8. made in the form of a brace moving along the mandrel depending on the length of the product being cut and fixed on it by means of a clamping bolt.

Bearing 9 is a sliding bearing for the coping mandrel. Two probes 10 are made in the form of rolling bearings mounted on a support p moving in grooves

an interchangeable copier 11, consisting of two cheeks, reinforced by poppy 12, which can be changed by the plank 13 along the table of the milling stack, and this movement can be controlled by the rotational axis

with the scale 14, applied in millimeters on the bar 13. The bar 13 can be turned

at some angle (elevation angle of the helix of the product being cut) relative to the cutting tool 15, by rotating around axis 16, controlled by a scale, applied in degrees, on the carrier plate 17, from the side of the dividing head and secured with a fixing bolt 18.

The carrier 17 can be moved along the C-shaped groove of the suspension 19 by the action of the set screw 20 along the vertical tongues 21, applied in millimeters and fixed on the suspension. Suspension 19 is attached to the trunk 22 of the milling machine.

The device works as follows.

On the trunk 22 of the milling machine, a copying device consisting of a base 12, a strip 13, fitted with a carrier 17, an axis 16, a suspension bracket 19 connected with a carrier screw and a fixing screw 20 is secured.

The bar 13, together with the base 12, is rotated by the angle of elevation of the helix of the product being cut by turning around the axis 16 lying on the axis O-O and fixing it with the fixing bolt 18.

The copier 11 is coupled to the tapered mandrel 5, the plant of the shuny 10 in the grooves and attached to the base 12.

In the center of the milling machine, the tool 15 is installed, and in the taper mandrel 5, with the help of a tension bolt, the tool and the cut piece 7 are inclined.

By moving the table of the milling machine to the right, the shchuns 10 mounted on onor 9 are outputted by copiers to the extreme position and by raising or lowering the table 2 the axis of the conical level 5 is aligned parallel to the table plane, which corresponds to 0 ° on the separating head.

The beginning of the cutting of the cutting tool 15 into the product 7 is determined by the corresponding point located on the complex curve of the groove surface of the copier 11.

This point under the probe 10 is found by moving the base 12 along the plank 13, guided by the readout of the slit 14.

After the initial cutting position has been found, the mobile center 8 is visited by the mandrel 5, after having knocked it down at a certain angle a, which is close to or equal to half the angle to which the cut product should be turned in the process of processing one tooth.

If it is necessary to cut the teeth in several turns, lower the table 2 of the milling machine and the horsetail 11, rotating the set screw 20 by the same amount, setting the depth of cut.

Subject invention

1.Device for milling machines for processing gear products, but no. St.

No. 271254, characterized in that, in order to simplify the setup of the device during two-pass processing, the device is sponge-coated, moving but C-shaped, made in the suspension, and carrying a bar mounted in the T-shaped groove, made at the base.

2. The device on n. 1, characterized in that, for the purpose of processing long and thin products, on the conical mandrel with the help of a yoke and bolts is fixed a moving center, made in the form of a bracket.

n

eleven