JPS58137522A - Control method of tooth surface honing machine - Google Patents

Abstract

PURPOSE:To prevent generation of dull-protrusion, by independently setting honing start and end points respectively of left and right tooth faces when every one tooth face of a helical gear is honed. CONSTITUTION:When a right hand helical gear W is honed from a left tooth face S, if a head 2 is aligned to a honing start point (a), a screw shaped stone wheel 1 is forward rotated by a limit switch La and the head 2 is lifted to perform honing. When the head 2 is lifted to an end point (b), the wheel 1 is stopped rotating by a limit switch Lb, and only the head 2 is lowered by a distance l1 and located in a start point (c) of a right tooth face L. The wheel 1 is reversely rotated by a limit switch Lc and the head 2 is lowered to perform honing. If the head 2 is lowered to an end point (d), the wheel 1 is stopped rotating by a limit switch Ld.

Description

[Detailed description of the invention] This invention relates to a method of controlling a tooth surface honing machine.

In the method of honing a helical gear one tooth side at a time using a screw-shaped grindstone, by controlling the start point and end point of honing on each tooth surface on the left and right side, "sag" and " The purpose of this is to prevent "protrusions" and to enable one-way honing with an error in the tooth trace direction of 1 degree.

A tooth surface honing machine is a machine that brings a grinding stone into surface contact with the tooth surface of a gear as a workpiece to give it a honing (honing) finish.
bD, there are several types. Among them, a nine-tooth honing machine that uses a screw-like grindstone as a horn grindstone is a machine that mainly reduces the tooth surface of helical gears and spur gears. The attached horn head, the column with IllI4 inside which reciprocates the rad in the upper direction, the control panel, and the turntable with R6 braking device that holds and fixes the workpiece gears horizontally. It is made up of a number of components, and is capable of honing in the left and right inward directions of the vehicle using a single-toothed ground screw-shaped grindstone.

The drawing shows an example of the above-mentioned -l honing machine.
) is a threaded whetstone, (ri is a horn head, (荀 is a column,
(4-1) is the grindstone rotation drive motor (reversible motor), (
4-2) is a motor for lifting and lowering the horn head.

(i) is the control plate, (・) is the table, (7) is the bearing, (
8) shows the braking device, and (W) shows the gear (right-handed helical gear), that is, the gear (W) horizontally m* on the table (・) and the screw-shaped grindstone (1) mesh with each other. By giving the whetstone (1) K rotations and raising and lowering the head (4-2), the - side of the gear (W) is polished to a horn finish. The switching between the grinding wheel and the toothed grinding wheel 111 (L) is performed by rotating the rotating shaft of the screw-shaped grindstone (1) in the normal and reverse directions. Below
# The conventional operating procedure for finishing a right-handed helical gear (W) with a gear honing machine will be described.

[Operating procedure]

1. Depending on the gear source, set the tooth surface honing start point a, (ν) and tooth surface honing end point s, d of the left tooth 1ii (S) and right gingiva (L), respectively, using two limit switches (
(Drawing omitted).

2 Honing start point (a) of the left tooth EI (S) The screw-shaped grindstone (1) starts rotating forward, and the horn head (
2) begins to rise (or fall).

1 Honing end point Cb of the left gingiva (S) When the horn head (ri) rises (or descends) at t, the screw-shaped grindstone (
1) stops rotating and at the same time raises the small head (
or descending).

The honing end point (b) of the left ffi (S) becomes the honing start point (C) of the right tooth surface (L), the screw-shaped grindstone (1) starts rotating in reverse, and at p11 the small hone head [)
begins to fall (or rise).

& The honing end point (d) of the toothed [fi (L) (this point is equal to the honing start point of the left gingiva).
) stops rotating, and the small head (2) also stops.

This completes one cycle. However, if the cycle is to be repeated 11H, by setting the number of repetitions in advance, the above items 2 to 5 are set and repeated nine times.

In the conventional one-sided honing machine, small-horn finishing is performed by the above-mentioned st'y procedure. However, in the case of a helical gear, if the honing start point of the left tooth is equal to the honing end point of the right gingiva, and the honing end point of the left tooth flank is equal to the honing start point of the right gingiva, then both the left and right tooth flanks are The honing start point and honing end point could not be optimal, and ``sagging'' and ``protrusions'' occurred at the end of the leprosy muscle on one side.

Tooth 11I)jvII4-The disadvantage was that the difference became large.

That is, in conventional one-sided honing, when the horn head moves, for example, from the left gum to the right.

The center point is 1 in the figure. The operation at the 0 point starts earlier than the optimal position, and at one point it ends before the waving position, so the C point part has a hollow shape with the inner part missing. The d and a portions had a bulging protrusion shape.

This invention has been developed to solve the above-mentioned conventional problems, and when honing a helical gear such as a helical gear on one tooth side at a time, the honing start point and honing end point can be set for each tooth side and right tooth side. It is variable depending on the gear specifications and pre-machining accuracy, and the start and end points of one side honing on either the left or right gingiva are shifted to match the end and start points of shortening on the other side. This paper proposes a one-sided honing control method that enables one-sided honing with high accuracy and the same difference in tooth trace direction.

That is, this invention is a method for honing a helical gear one tooth surface at a time by raising and lowering a screw-shaped grindstone driven by a reversible motor. In order to set the honing start and end points of the left tooth flank and the right tooth flank respectively to the optimum positions, set the start and end points of the tooth flank honing using an electric switch. The screw-shaped grindstone rotates from the tooth surface honing starting point [7, and when the horn head starts moving up to -E or F next to it and reaches the end point of the small-second honing, the rotation of the screw-shaped grindstone stops and only the horn head rotates. It is characterized by descending to the start point of honing on the other tooth surface [9] rises, and when the operation is completed, the screw-shaped grindstone rotates and the horn head starts descending. be.

Hereinafter, this example will be explained with reference to the drawings. The tooth flank honing start points a-b of the left tooth flank (s) and right tooth flank (L) of the workpiece helix 11W) are as follows. and the end point S, d are the honing start point 1 & honing end point 1 on the left m surface, and the honing completion point d on the right tooth surface, respectively.
and 4- limit switch (
La) (LbXLc) (Ld). In other words, depending on the deviation amount 1 and K between the honing M start point and end point of the left tooth [1 (S) and the right tooth surface (L),
Set the fiJ detective's limit switch.

The deviation is the specifications of the scissor gear and the pre-processed gear square.
It is a phoenix that can be determined according to one's shyness. Note that the four V<t switches are indicated by O marks for convenience of explanation, but the * mark is built in the column (1).

When honing from the surface (S), when the horn head (2) is aligned with the honing start point 1 on the left m surface (S), the screw-shaped grindstone (1) starts rotating forward by the limit switch (La), and at the same time The horn head (2) starts to rise and hones the left tooth flank. Then, when the horn head (8) rises at the honing end point bl of the left tooth surface (S), the limit switch (Lb) stops the rotation of the screw-shaped grindstone (1), and the horn head (the grinding wheel lowers by 11 amounts). then right 1i
The horn head (2) located at the honing starting point C of the #1 plane (L) is on the right honing starting point CK of the #1 plane (L).
When the grinding wheel (1) reaches the full position, the limit switch (Lc) causes the wheel-shaped grindstone (1) to start rotating in reverse.

At the same time, the horn head (2) starts to descend and hones the right tooth flank. When the honing end point of the toothed IIf [1 (L) d t ``t'*-'' is lowered, the rotation of the screw-shaped grindstone (1) is stopped by the limit switch (Ld).

One cycle is completed with the above, but if you want to return the cycle marked E continuously, is return (by doing 7 times 6 and 1 Ryutsu V, the honing end point of the right (L) From d, with the screw-shaped grindstone (1) stopping rotating, only the horn head (2) rises by 11J1m, starts honing the left tooth flank (8), rises at aat, and repeats the above steps again. It will be done.

Incidentally, the rotation, stopping, and turning directions of the screw-shaped grindstone and the raising, lowering, and stopping operations of the horn head in the machine can be performed by pattern control using, for example, a selector switch.

The setting of the enemy is done by the counter.

As explained above, according to the method of the present invention, it is possible to provide the optimum honing start point and honing end point for both the left side and the toothed surface of a helical gear. ” or “protrusions” do not occur, and the tooth surface can be honed with i-accurate tooth trace direction difference.

[Brief explanation of the drawing]

l! 1 is a schematic explanatory diagram showing an embodiment of the present invention. In the figure, 1... screw-shaped grindstone, 2... horn head. 3... Column, 4-1... Grinding wheel-driving motor, 4-2
・・・Shen head drive motor, 5...IIIJ@a
l, 6...Cheer 1, 7...Bearing, 8...Control device, W...Torsion-wheel. a...Left tooth surface honing start point, b...Left tooth surface honing start point, C...Rightward honing start point, d
, −・End point of right flank honing. Source: Sumitomo Metal Shoko Ant Co., Ltd. Daiwajin 1) Hisashi Ai

Claims (1)

[Claims] In tooth flank honing control of a tooth m*-honing machine that hones the tooth flanks of a helical gear one side at a time by raising screw-shaped grindstones driven by reversible motors. Depending on the gear specifications and machining accuracy, honing the left tooth flank and right #1 face respectively so that the start and end points of tooth flank honing are at the farthest position. The honing start point and end point of both tooth flanks are set by an electric switch, and the screw-shaped grinding wheel is rotated from the starting point of tooth flank honing on either the left tooth flank or the right tooth curve, and the horn head is rotated. 9 is rising, 9 is descending, and when it reaches the end point of honing, the screw-shaped grinding wheel OIg1 stops rolling, and only the horn head moves next to F or rises at the honing starting point trench on the other side, and is aligned with that IIJJ work. A method of controlling a tooth surface honing machine, characterized in that the screw-shaped grinding wheel is controlled to rotate in reverse or the horn head starts to descend or ascend.