RU1779487C - Form milling cutter - Google Patents

Abstract

The invention can be used in the processing of non-metallic parts of a globoid profile. The body of the shaped milling cutter consists of two parts that are pulled together by a threaded sleeve. In both parts of the body there is a horseshoe-shaped socket for receiving a cutting insert of a similar shape, the ends of which abut against annular stops fixed on the periphery of both parts of the bodies. 2 ill.

Description

The invention relates to the field of processing metal and non-metal structures and can be used in the processing of non-metal parts of a globoid profile.

A milling cutter construction is known pertaining to the woodworking industry. The disadvantage of the cutter is its one-time applicability, non-separability, and also the thickness of the blades from 0.1 to 0.2 mm.

A cutter is known in which the cutter blade is made in a spiral and is fixed from turning by a threaded element.

Its disadvantage is the impossibility of using its inherent advantages for processing convex radius surfaces not only of large parts, but also of bodies of revolution.

A milling cutter is known, comprising a two-part body and a cutting part with a curved blade.

A disadvantage of the known design is the inability to use

removable plates when machining radial convex surfaces of large bodies or bodies of revolution, which reduces processing productivity and quality.

The purpose of the invention is to increase productivity and processing quality.

Figure 1 shows a sectional view of a cutter with a partial section; figure 2 is the same plan view.

The horseshoe-shaped plate 1 is located between two halves of the mill body 2 and 3, tightened by a screw 4 with grooves 5, having an internal bore 6 from both ends. The keyway grooves 7 of the housing are located in the opposite direction from the axis of the sleeve 4 and serve to twist the sleeve 4. At the end of the sleeve 4, both versions of the grooves 5 and 7 can be made at once. tool (the moment applied to loosen the plates) allows you to apply

with

WITH

xj

Xi

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With

Xi

less force for loosening and assembling the tool assembly and thereby preventing the destruction of the grooves 5 and 7 when the impact tool is applied to them. The groove 8 serves to transmit torque to the assembled tool during its operation. The threaded hole 9 has two opposite directions relative to the two ends of the tool cases 2 and 3, separated by a jumper 10. The connector of the cases is indicated by pos. 11. Support plates limited to the zone of location of the cutting insert and its support base are welded to the casing 2 and 3 at the periphery of the shell ring-shaped form. The cutting insert is a horseshoe-shaped split profile with the transition of the curved blade 12 to rectilinear 13. The rear surface of the cutting insert is indicated by 14 and 15, and the basic supporting surface along the end portion 16, The wall of the groove 5 and 7 is indicated by. 17. The support plates 18 serve to prevent the plates from escaping during cyclic failure. The end face 19 is located from the vanishing of the rear surface, indicated by the second contour line from the working blade on the upper projection. Sections 20 and 21 define the boundaries of the annular recess under the head of the screw included in the mandrel of the tool.

At

0

5

Assembly of the cutter.

The cutting inserts 1 are mounted in the housing 2 relative to the stops 18. The housings 2 and 3 are tightened by a screw 4 by rotating it in one direction in the direction of the tightening torque from the cutting forces. When the required screw tension is achieved, the structure is mounted on the machine. To replace the cutting inserts, the milling cutters should not be removed from the machine, since having unscrewed the screw 4 to extend the insert 18, it is possible by removing the horseshoe-shaped profile of the insert to remove it from the groove in the cases 2 and 3, securing the cutter in the reverse order.

Claims (1)

The claims A shaped milling cutter comprising a two-part body and a cutting part with a curved blade, characterized in that, in order to increase productivity and processing quality, ring stops are made on the periphery of both parts of the body, and the cutting part is made in the form of a horseshoe-shaped plate placed in a socket in the shape of the plate in both parts of the housing, the ends of the plate being designed to interact with the annular grooves of the housing, the cutter having a sleeve with an external thread for engaging with nennoy internal thread on both parts of the body. 5 0 / 3 ZO 21 7 0§ RAZA / l / $ item detail 7 C FIG. FIG. 1 L1-1