SU1273231A1 - Device for sharpening end milling cutters - Google Patents

Abstract

The invention relates to the field of grinding. The aim of the invention is to improve the quality of sharpening an end cutting tool by increasing the accuracy of the reversing screw movement of the sharpened end mills. In the device housing 1, a replaceable two-lead screw copier 2 is fixed coaxially to the body; it is rigidly connected to the dividing disc 3. The sharpened milling cutter is fixed in the collet 6. On the housing 1 on both sides of the replaceable two-entry screw copier 2, two guide palps 9 are installed opposite The accuracy of the screw movement is adjusted by adjusting the axial position of the guide pins 9, which are fixed by nuts 10. The opposing position of the fingers 9 sh (L And Allows the use of interchangeable screw copiers with different steps. 1 or 00 with

Description

The invention relates to grinding and can be used in the manufacture and restoration of end mills of small diameters with helical grooves (for sharpening, regrinding, milling of grooves).

The purpose of the invention is to improve the quality of sharpening by improving the accuracy of the reverse helical movement of the sharpened end mills. 10

The drawing shows a device, General view.

In the housing 1, a replaceable two-way screw copier 2 is placed coaxially with it, rigidly connected to the dividing disk 15 3. Inside the screw copier 2 there is a sleeve 4 with a rod 5 for fixing the milling cutters with the help of a collet 6. The sleeve 4 is connected to the handle 7 and the lock 8. In case 20, 1, two guide fingers 9 are installed on both sides of the interchangeable screw copier 2. The conical ends of the guide fingers 9 enter the profile grooves of the interchangeable 25 screw copier 2. The accuracy of the screw movement is controlled by setting the axial position to ruling fingers 9, which are fixed with nuts 10.

The device operates as follows.

When turning the handle 7, the sleeve 4 with the sharpened milling cutter (the position is not indicated) receives a screw movement with the help of a replaceable screw, copier 2, moving relative to ^{33 of the} housing 1 with guide fingers 9. The division after processing the next tooth of the cutter is performed by turning the lock 8 relative to the dividing disk 3. 40

The use of two guide fingers located on both sides of the interchangeable screw copier allows, by axial movement, to eliminate the gap between them and the copier, to finely adjust the gap between the interchangeable screw copier and the housing, excluding the displacement of their axes and the warping of the interchangeable screw copier relative to the housing. The use of a two-way copier made it possible to arrange the guide fingers opposite, regardless of the step of the interchangeable screw copier. This arrangement of the fingers makes it possible to use interchangeable screw copiers with different steps.

The proposed device eliminates the need for precise kinematic adjustment of the grinding machine, simplifies its setup.

Claims (2)

f. The invention relates to grinding and can be used in the manufacture and restoration of small diameter end mills with helical grooves (for grinding, regrinding, milling grooves). The purpose of the invention is to improve the quality of sharpening by increasing the accuracy of the reversible screw movement of sharpened end mills. The drawing shows the device, a general view. In case 1, a replaceable two-way screw copier 2 is fixed coaxially with it; it is rigidly connected to the dividing disc 3. Inside the screw copier 2 there is a sleeve 4 with a step 5 for fastening the cutters with a collet 6. The sleeve 4 is connected to the handle 7 and lock 8. In case 1 on both sides of the interchangeable screw copier 2, there are opposed two guide pins 9. The conical ends of the guide pins 9 enter the profile grooves of the interchangeable screw copier 2. The accuracy of the screw movement is adjusted by adjusting the axial position of the guide pins 9, which are fixed by nuts 10. The device operates as follows. When the handle 7 is rotated, the sleeve 4 with the sharpened cutter (position not marked) receives a helical movement with an interchangeable screw copier 2 moving relative to the housing 1 with the direction of your fingers 1 with 9 fingers. The division after processing the next tooth of the cutter is performed by turning the fixator 8 relative to the divider disk 3. 31 The use of two guide pins, located on both sides of the interchangeable screw copier, allows to eliminate the gap between them and the copier by their axial movement, finely adjust the gap between the interchangeable screws striation cam and the housing, excluding the offset of their axes and tilting of the replaceable helical copier relative to the housing. The use of a two-way copier made it possible to position the guide fingers oppositely independently of the pitch of the interchangeable screw copier. This arrangement of the fingers makes it possible to use interchangeable screw copiers with different steps. The proposed device eliminates the need for accurate kinematic adjustment of the sharpening machine, simplifies its adjustment. An invention of a device for sharpening end mills, comprising a housing mounted inside a housing coaxially with it a replaceable screw copier, a guide finger located on the housing with the possibility of interacting with a replaceable screw copier, characterized in that, in order to improve the quality of the sharpening by increasing the accuracy of the reverse screw the movements of the sharpened cutters, the replacement screw, the howling copier are double-threaded, and the body is provided with an additional finger, installed opposite the first guide finger.