Feed box model 077.0000.000.

The feed box is designed to change the gear ratio when transmitting rotation from the input shaft of the feed box to the lead screw or lead shaft of screw-cutting lathes. A general view of the feed box is shown in Fig. 1.

With the help of the feed box, the relative movements of the cutting tool and the workpiece necessary for efficient and productive work are carried out, ensuring that parts of the desired configuration are obtained with the required accuracy and surface finish.

The feed box allows cutting metric and inch threads, as well as threads of 11 and 19 threads per inch by switching a separate handle without changing the gears of the guitar.

Climatic version of the feed box is UHL4 and 04 (for tropical climate) according to GOST 15150.

It is allowed to use a feed box for machines with the following data:

Maximum allowable torque:

a) on the lead screw coupling, Nm (kGm) - 50 (5);

b) on the running shaft coupling, Nm (kGm) - 20 (2).

Denomination	Data
Distance between the axes of the lead screw and the lead shaft, mm	63+0,05
Number of speed stages of output shafts
a) lead screw	18
b) running shaft	16
Gear ratios of the feed box:
a) for serving	0,0313; 0,0391; 0,0469; 0,0547; 0,0625; 0,0781; 0,0938; 0,1094; 0,125; 0,1563; 0,1875; 0,2188; 0,25; 0,3125; 0,375; 0,4375

b) for metric threads	0,1; 0,125; 0,15; 0,175; 0,2; 0,25; 0,3; 0,35; 0,4; 0,5; 0,6; 0,7; 0,8; 1,0; 1,2; 1,4

c) for inch threads	0,0906; 0,1058; 0,1270; 0,1587; 0,1813; 0,2116; 0,2540; 0,2672; 0,3170; 0,3627; 0,4232; 0,4615; 0,5080; 0,6350; 0,7256; 0,8466; 1,016; 1,270
Maximum allowable torque:
a) on the lead screw coupling, Nm (kgm)	50 (5)
b) on the drive shaft coupling, Nm (kgm)	20 (2)
5. Overall dimensions, no more, mm:
length	760
width	215
height	290
6. Weight, no more, kg	73

Designation	Denomination	Number	Note
077.0000.000	Complete feed box
Included in the kit and the cost of the apron
Documents
077.0000.000 RE	Manual		In quantity and language according to the requirements of the work order.
	Packing list and quality certificate	One for several aprons, packed in one box