SU1414507A1 - Cutting tool for machining crankshaft journals - Google Patents

Description

(21) 4016387 / 25-08

(22) 12/17/85

(46) 08/07/88. Bul Number 29

(71) Production Association Brno Machine-Building Plant them. IN AND. Lenin

(72) A.V. Chemersky

(53) 621.9.025 (088.8)

(36) USSR Copyright Certificate And 328662, cl. B 23 B 1/00, 1969.

(54) CUTTER FOR TREATING NECK OF CRANKSHAFT

(57) The invention relates to the field of metal cutting, and specifically to lathes in the finishing of cylindrical surfaces, such as crankshaft journals. The aim of the invention is to increase the purity and precision of processing, which is achieved by increasing

stiffness and vibration resistance of the cutter. On the spring holder 1 with a forked shank 2, the cutting element 3 is rigidly fastened with screws 4. In the cylindrical hole 5 of the spring holder 1 there are two pins 6, the ends of which interact with the conical tip of the screw 8. The pins 6 through the springs 10 interact with the yokes 11, which accommodate balls 12 can be rotated. When machining by turning the screw 8, the necessary force is pressed against the sleeves 11 with balls 12 to the planes 16 of the crankshaft cheeks. Then, a wide cutter is brought up to the contact with the neck 15 to be machined and a 14 g grams, depending on the cutting depth of the cutting edge, is created, deforming the spring holder 1, 2 cells.

(/)

SG

The invention relates to the field of metal cutting, and specifically to turning cutters for finishing cylindrical surfaces, such as crankshaft journals.

The purpose of the invention is to increase the purity and accuracy of processing by increasing the rigidity and vibration resistance of the cutter.

FIG. 1 shows a cutter for machining crankshafts; in fig. 2 is a cross section of L-A in FIG. one.

The cutter comprises a spring holder 1 with a stitched shank 2 and a cutting element 3, which is rigidly mounted on a spring holder 1 and 1 screw 4.

In the spring holder 1 there is a cylindrical through hole 5, in which two pins 6 are placed, the ends of which interact with the conical tip 7 of the screw 8, mounted in the threaded hole 9 of the spring holder 1, which intersects at right angles to the opening 5,

In turn, the pins 6 through the springs H1H3 10 interact with the clips 11, in which they are placed with the possibility of turning; e: and the balls 12. The cage 11 from falling out is fixed with screws 1 3.

The cutter works as follows.

The forked shank 2 of the spring holder 1 is fixed in the support of the machine tool tac-i in such a way that the cutting edge of 14 pp to the ptsto element 3 is located Ryg. 2

BiiHlfflH Order 3815/9

Circulation 880

Random polygons pr-tie, Uzhgorod, st. Project, 4

lays parallel to the axis of the processed neck 15. After that, the wide cutter approaches the processed jaw 15 at a distance of 5-10 mm to the cutting edge 14 and by rotating the screw 8 creates the necessary under- force. clutch press 11 with sh-sh 12 shtokost m 16 cheeks of the crankshaft. The wide cutter is brought up to the contact with the workable jaw 15 and created impenetrable, depending on the depth of incision of the cutting edge 1A, of tension r by deformation of the spring

tool holders 1. Then the machine drive is turned on.

Claims (1)

Invention Formula A cutter for machining the crankshaft chuck, which contains a spring holder and a cutting element, characterized in that, in order to increase the accuracy and cleanliness of the treatment by increasing the rigidity and vibration, the cutter has a through hole in the holder parallel to the cutting edge and is perpendicular to it - a threaded hole , wherein the cutter is equipped with a screw with a conical tip and placed in a through-hole and installed with the ability to interact with each other in pairs with two pins and two spring-loaded balls at the end, and the conical tip of the screw is designed to interact with the ends of the pins. Subscription