JPS6165720A - Assembled pinion cutter - Google Patents

Abstract

PURPOSE:To aim at enhancing the working efficiency upon changing of the tooth thickness of a workpiece, by coaxially combining a plurality of pinion cutters while they are made relatively displaceable in the peripheral direction thereof so that the tooth thickness of the cutter may be selectively changed. CONSTITUTION:The thickness of an assembled pinion cutter 01 is adjusted such that a tapered pin 19 is moved by rotating a bolt after bolt 15 is loosened, to press the tapered pin 19 against a wedge 18, thereby a pinion cutter 11 is displaced. Accordingly, when the finishing tooth thickness of a workpiece varies, the tooth thickness may be changed while the assembled pinion cutter 10 is left to be attached to a machine, and therefore, no readjustment of phases is required. As a result, when the finishing tooth thickness of a workpiece varies or when works which are multiproducts produced in small quantities are processed, it is possible to enhance the working efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to an improvement of a pinion cutter, which allows the wall thickness to be adjusted.

<Prior art> A pinion cutter, which is one of the gear cutting tools used for cutting gears, is shaped like a gear and has a blade attached to one end of the tooth trace, as shown in Figure 2 ta+tb+. . Then, by reciprocating the pinion cutter 1 in the axial direction, the locus of the cutting blade provides synchronous rotation such that the virtual gear and the workpiece mesh with each other and move, thereby cutting the tooth surface of the workpiece. Then, as the machining process progresses, the distance between the axes becomes shorter in the radial direction.Finally, the workpiece is made to perform a generating motion until it reaches the regular thickness of t11.After that, kneading machining, gear grinding, etc. Therefore, the tooth thickness t of the pinion cutter 1 is set including the machining allowance for finishing, and if there is a change in the finished dimensions, the pinion cutter 1 is modified by tooth profile grinding. The tooth thickness is changed accordingly.

<Problems to be solved by the invention> As described above, when machining workpieces with different tooth thicknesses using the conventional pinion cutter 1, the pinion cutter 1 is removed from 4[, correction II*t, and then re-processed. It is necessary to install the pinion cutter 1 on the machine and align the phase between the pinion cutter 1 and the workpiece. Therefore, when cutting the gears of many types of workpieces with a small number of binoculars or canons, there is a problem in that it requires a great deal of labor and time.

The present invention was made to effectively solve this problem, and provides an assembled pinion cutter whose wall thickness can be adjusted.
The purpose of this invention is to eliminate the trouble of exchanging a pinion cutter or correcting the tooth thickness of a pinion cutter every time the workpiece tooth thickness is changed, and to improve work efficiency when changing the workpiece iJ thickness.

Means and Effects for Solving the Problems> The structure of the present invention to achieve the above object is characterized in that a plurality of pinion cutters are combined coaxially and are movable relative to each other in the circumferential direction. The tooth thickness of the cutter can be arbitrarily selected by displacing them relative to each other.

Embodiment> FIG. 1 shows an assembled pinion cutter according to an embodiment of the present invention, and FIG. Cross section, Fig. 1 fcl shows arrow B in Fig. 1 fbl, Fig. 1 Fdl shows Fig. 1 (C- in cl)
A CR cross section is shown.

The assembly pinion force ν01 is constructed by combining two pinion cutters 11 and 12 with the same tooth profile and the same outer diameter. The end surface outer circumferential portion 14 of the pinion cutter 12 fits into the inner circumference of the pinion cutter 11 [L[i13],
It is fixed with a real bolt 15, and the bolt hole 16 of the pinion cutter 11 is an elongated hole. On the other hand, an elongated hole 17 is bored between the bolt holes 16 of the pinion cutter 11, and a wedge 18 having a tapered end surface 18a is mechanically fixed to an end surface 17a of the elongated hole 17. Binion cutter 1
A tapered pin 19 having a tapered tip is located at a position facing the elongated hole 17 of No. 2, and the end surface 18a of the elongated hole 17 and the elongated hole 18 are in contact with each other. In other words, the wedge 18 is pressed by the movement of the taper pin 19 toward the elongated hole 17, and the pinion cutter 11 is moved in the circumferential direction (to the right in FIG. 1 fdl). In addition, the pinion cutter 12 has
A bolt 20 is provided for moving the taper pin 19, and the rotation of the bolt 20 causes the taper pin 19 to move.

Note that it is not necessarily necessary to provide a mechanism for displacing the pinion cutter 11, such as the taper pin 19 and the wedge 18.
It is sufficient if the pinion cutters 11 and 12 are relatively movable in the circumferential direction.

For the assembly pinion cutter 01 described above, loosen the bolt 15, turn the bolt 20 to move the taper pin 19, and (
The tooth thickness P is adjusted by pressing the taper bit 19 against the rust 18 and displacing the pinion cutter 11. therefore,
When the finished tooth thickness of the workpiece changes, the assembly pinion force ν
Since the tooth thickness can be changed while the 01 is attached to 1ml&, there is no need to grind the tooth profile of the cutter, and there is no need to redo the phase adjustment metal.

<Effects of the Invention> Since the assembled pinion cutter of the present invention can obtain any desired tooth thickness, it is possible to improve work efficiency when machining workpieces with various types of workpiece teeth.

[Brief explanation of drawings]

FIG. 1 shows an assembled binion cutter according to an embodiment of the present invention, FIG.
Cross-sectional view taken along line A-A in Figure tat, Figure 1 (C);
B arrow view in bl, Fig. 1 (dl is Fig. 1 (C-C in C1)
Line sectional view, FIG. 2(a) fbl is a plan view and a sectional view of a conventional pinion cutter. In the drawing, 01 is an assembly pinion cuff, 11, 12 is a pinion cutter, 16 is a bolt hole, 17 is an elongated hole, 18 is a wedge, 19 is a hinge, and 20 is a bolt. Patent applicant: Mitsubishi Heavy Industries, Ltd., acting agent

Claims (1)

[Claims] An assembled pinion cutter characterized by coaxially combining a plurality of pinion cutters and allowing relative displacement in the circumferential direction.