スレッドミルの動きを上から下にしたい。【threadpro（スレッドプロ）】 | オーエスジー

I want the movement of the thread mill to be from top to bottom. [ThreadPro]

When using ThreadPro, an NC program creation tool for thread mills, you can do the following.

In the case of right-hand thread...

For right-handed (right-turned) cutters, the up-cut selection allows you to specify the movement of the tool from top to bottom.

In the case of left-hand thread...

For right-handed (right-turned) cutters, the tool movement can be specified from top to bottom in the selection of the down cut.

・ The movements performed by Thread Pro are introduced from the following.

In order for the movement of the tool to go down from top to bottom, you need the following information:

(1) Right-hand or left-hand thread

(2) The tool to be used is a right-hand blade (used with right-hand rotation) or a left-handed blade (used with left-hand rotation)

(3) Down cut or up cut

- Procedure for operation in ThreadPro

(1) Set

First, enter the information of the screw you want to process (nomination, pitch, thread length, etc.). At that time, please select right-hand or left-hand thread.

(2) Set

Next, you will be asked to select the tool you want to use. Many of OSG's thread mills are right-edged.

Partly, it is used with a chip exchange type holder on the left (= left rotation of the main axis. The holder model number is described as -LH. There is a thread mill AT-2 (left-hand blade specification) for high-hardness steel.

(3) Set

In addition, enter information about the movement of the selected tool on the next screen.

In Thread Pro, all you have to do is choose a downcut or an upcut here.

In comparison with the information you have entered so far, the movement of the tool is displayed in an easy-to-understand diagram.

To specify the movement of the tool from top to bottom, you need a combination of the following:

Right-hand thread

Right Blade (Tool Right Rotation) & Upcut

Left-hand thread

Right Blade (Tool Right Rotation) & Down Cut

The relationship between up-cut and down-cut, tool movement

The threads on the blades of the Planet Cutter do not have a lead like a tap. A tool mounted parallel to the shaft of the pilot hole can be sent in the axial direction by one pitch between rotation (spindle rotation) and revolution (helical cutting feed) motion, as well as one revolution, to machine a leaded screw. Since helical cutting is performed by moving the X, Y, and Z axes at the same time, it is a prerequisite for using Planet Cutter that the processing machine is a machining center equipped with NC (numerical control unit) with simultaneous control of 3 axes and a helical interpolation function. Right-hand thread, left-hand thread, up-cut, and down-cut are determined by a combination of orbital and axial feeds. In general, upcuts are better in terms of finishing surface, while downcuts are better in terms of tool life. In addition, when machining a stop hole where there is no room in the pilot hole, the tool is sent in the direction of extracting from the pilot hole so that the chips generated by the internal thread machining are not pressed against the bottom of the hole with the end surface of the tool.

Female thread processing principle

	I.D.right-threadI.D.I
Direction of tool rotation Cutting feed direction	Cut-up through the hole	Stop-hole downcut	Cut-down through holes	Stop-hole up-cut

In addition, the chip-type left-handed holder and the AT-2 thread mill for high-hardness steel are left-hand specifications.

In that case, the following combinations will be used.

Right-hand thread

Left Blade (Tool Left Rotation) & Down Cut

Left-hand thread

Left Blade (Tool Left Rotation) & Upcut

Reference code

spindle clockwise rotation M03

spindle counterclockwise rotation M04

Axis MovementClockwise (Circular Interpolation)G02

Axis Movement: Counterclockwise (Circular Arc Interpolation)G03

Diameter correction works on the left side of the direction of travel G41

(If the main axis is rotated to the right, it is a down cut.) If the main axis rotates to the left, it is an up cut. ）

Diameter correction works to the right with respect to the direction of travel G42

(If the main axis is rotated to the right, it is an upcut.) If the main axis is rotated to the left, it is cut down. ）