Hydraulic Divider for Groove Milling

Contents

Contents

Job for Course Project

1. Combined Tool Analysis

2. Procurement Selection

3. Selection of metalworking equipment

4. Routing Process of Combined Tool Manufacturing

5. To Assign a Cutting Mode to an Outer Longitudinal Turn Operation

6. To Set the Cutting Mode for a Drill Operation

7. To Assign a Cutting Mode to an End Mill Operation

mill

8. Description of accessories

8.1 Description of the retainer cartridge

8.2 Calculation of the diameter of the safety pin in the cartridge for

retainer

8.3 Description of hydraulic divider

8.4 Description of device for control of diametrical run-out

9. Spisokispolzovannoyliteratura

Application

1. Analysis of the combined tool.

Material of the P6M5, HB =269 tool in an otozhyonny state. Tool has satisfactory machinability by cutting.

The part is a body of revolution consisting of a set of external cylindrical, conical, shaped surfaces and internal cylindrical surfaces.

The base surface of the tool is an inner cylindrical surface with a diameter of 16 mm, made of 7 square meters. The pin surface with a diameter of 5 mm is also made by 7 square meters. The responsible surface is the threaded surface of the thrower, made according to 5 kvalitet.

3. Selection of metalworking equipment

In single production conditions, universal machines are used in connection with the possibility of performing a large range of parts on them, but with a small production cycle.

For the production of the combined tool, equipment was used: universal turning and screw-cutting machine with CNC model 16K20F3, vertical-drilling machine 2G175, horizontal-milling machine 6P81, vertical-milling machine 6P12, in-grinding machine 3K225A, threaded-grinding machine 3K82V, 2Al2V machine 2K22222K on.

8.1. Description of the retainer cartridge.

The combined tool is installed in the holder 2, the torque to which is transmitted by a square hole. To install the combined tool, move the collar 4 to the position where the balls 22 enter the recess. When removing the tool, it is also necessary to move the holder 4, but the spring-loaded sleeve 3 acts on the tool, which ensures the ease and speed of tool change. From departure, the holder is fixed by locking ring 5. The cartridge is based in the spindle hole with cone 7:24 and tightened with a bolt. Torque from spindle to cartridge is transmitted due to guide key, and then guide 9, in which pins are pressed, to holder 2, and then to cutting tool. Used as a cutting tool is a combined retainer.

The cartridge has axial compensation in one direction, designed to compensate for the difference between the feed of the machine and the pitch of the thrower. Compensation is carried out by springs 18.19. Also, the cartridge has floating compensation, i.e. the holder 2 with the combined tool installed in it has the possibility of radial displacement, which makes it possible to process the hole with misalignment of the tool and the hole.

This cartridge can be used on any CNC threaded machine.

8.3 Description of hydraulic divider.

This dividing device is designed to turn the workpiece by a certain angle. Oil is supplied to the left side of the cylinder 16, thereby creating pressure on the piston 18. The piston 18 is connected to a rack 2 which is reciprocally movable. The rack is engaged with a gear wheel 4 on which a spring-loaded pawl 23 is mounted. From the gear wheel, by means of a pawl, the moment is transferred to the ratchet wheel 3, which is installed in a rigid coupling with the locking wheel 15 and with the mandrel 27. Mandrel 27 is rigidly connected by shaft 6, on which it is pressed over conical surface with the help of nut 34 and washer 41. Shaft 6 is mounted in housing on radial bearing 38, thrust bearing 39. Shaft 6 has conical hole - Morse 2, into which mandrel with blank installed on it is inserted.

Ratchet wheel 3 and lock wheel 15 shall have the same number of teeth. Adjusting screws 7 serve to adjust the rotation angle. First, pressure is applied to the left side of the cylinder 16, causing the rack 2 to move to the right until it abuts the right adjusting screw 7. As soon as the rack abuts against it, twist the left adjusting screw (7) until stop against the piston (18). We create pressure in the right cavity of the cylinder 16 and, turning the left adjusting screw 7, listen to the number of blows of the pawl 23 against the ratchet wheel 3. Locking wheel (15) is fixed against turning by stop (11) by means of nut (9) twisting.

8.4 Description of device for control of diametrical run-out.

The tool is placed in the center. Threaded micrometer 2 is installed on tripod 3, upper probe of which measures run-out and lower probe size. Threaded micrometer is designed to measure run-out by external, internal, average diameter of thread, using replaceable probes. The tripod has horizontal guides for moving a micrometer along them.