JP2016215327A - Skiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skiving device capable of concentrically supplying a cutting liquid to a cutting edge.SOLUTION: A skiving cutter 29 is attached to a tip of an arbor 15 on the axis 13 of rotation, and a gear workpiece is skived by the skiving cutter 29. A supply port 35 for a cutting liquid oriented to a position of skiving by a cutting edge is provided in a fixing position on the side of the center of rotation with respect to the cutting edge of the skiving cutter 29.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a skiving machine for skiving a gear workpiece using a skiving cutter, and supplying cutting oil, coolant, etc. (hereinafter collectively referred to as cutting fluid) to the skiving position. Concerning configuration.

  Conventionally, this type of skiving apparatus is disclosed in Patent Document 1, for example. In Patent Document 1, the skiving cutter is rotated by the rotation of the rotating shaft. A cutting fluid supply port is formed on the rotating shaft. Then, the cutting fluid is supplied to the skiving position when the rotating shaft on which the skiving cutter performs the cutting operation rotates.

German Patent Application No. 102013015252

  In the technique of Patent Document 1, the supply port is arranged on a rotation shaft, and the supply port is provided over a position in a range of 360 degrees corresponding to the entire circumference of the skiving cutter. Therefore, at the time of skiving, the cutting fluid is wastedly discharged in all directions from a wide range of 360 degrees, even though the machining position is one. For this reason, in order to supply a sufficient amount of cutting fluid to the machining position, it is necessary to release a large amount of cutting fluid. Therefore, the circulation mechanism including a pump for circulating the cutting fluid is also enlarged.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a skiving machine that can supply cutting fluid to the skiving position in a concentrated manner.

  In order to achieve the above object, in the present invention, in the skiving processing apparatus provided with a skiving cutter mounting portion at the tip on the rotation shaft, the fixed position on the rotation center side from the position of the cutting edge of the skiving cutter. Further, the present invention is characterized in that a cutting fluid supply unit directed to the skiving processing position is provided.

  In the above configuration, at the time of skiving processing by the skiving cutter, the cutting fluid is intensively supplied from the supply port toward the cutting edge at the processing position. For this reason, smooth and highly accurate cutting can be performed using a sufficient amount of cutting fluid.

  According to the present invention, the effect that the cutting fluid can be intensively supplied to the machining position is exhibited.

The perspective view which shows the state which creates an internal gear using the skiving cutter of one Embodiment. Sectional drawing which shows the state which removed the arbor. The top view which shows a cutting fluid supply part. Sectional drawing which shows the part of a rotation prevention member. Sectional drawing which shows the state which creates an internal gear using a skiving cutter.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a rotating shaft 13 is supported via a plurality of bearings 12 inside an outer cylinder 11 fixed to a device frame (not shown) of the skiving processing device. It is rotated in one direction by a drive motor (not shown). An arbor 15 is detachably inserted into the shaft hole 14 at the center of the rotating shaft 13 at the insertion portion 16 at the base end. Then, the draw bar 17 arranged at the center position of the rotary shaft 13 is moved downward in FIG. 16 is fixed between the chuck 19 and the rotary shaft 13. Further, when the draw bar 17 is moved upward, the collet 18 is retracted upward, the pressure contact with the chuck 19 is released, and the chuck portion 19 is operated by the cam portions 161 and 191 between the insertion portion 16 and the chuck 19. Is extracted upward (see FIG. 2).

  As shown in FIGS. 1 and 2, a central hole 21 is formed at the center of the arbor 15, and a female screw 22 is formed at the upper end thereof. A shaft portion 23 as a mounting portion is formed at the upper end portion of the arbor 15 and a step portion 24 is formed. On the step portion 24, a ring seat 25 is fixed to the shaft portion 23 in an externally fitted state.

  A rotating member 26 is screwed to the female screw 22 at a male screw 27 at the lower end, and a flow path 28 communicating with the center hole 21 from the axial center position toward the outer peripheral surface is provided therethrough. The rotating member 26 is rotated integrally with the arbor 15. A skiving cutter (hereinafter simply referred to as a cutter) 29 is fitted on the shaft portion 23 and fixed on the ring seat 25. Then, by screwing the male screw 27 of the rotating member 26 to the female screw 22, the cutter 29 is fastened to the ring seat 25 via the spacer 31 at the stepped portion 30. Accordingly, the cutter 29 is rotated by the rotation of the shaft portion 23 of the arbor 15, and the skiving process is performed on the gear workpiece 101 by the teeth 291 of the cutter 29 as shown in FIG. 5.

  As shown in FIGS. 2 and 3, a collar member 33 is supported on the outer periphery of the rotating member 26 via a bearing 32 so as to be relatively rotatable. A gap 34 communicating with the path 28 is formed. A supply port 35 that opens toward the cutting edge 292 at the skiving position of the cutter 29 is disposed at one place on the peripheral wall of the collar member 33. Then, the cutting fluid is skived from the supply port 35 through the flow path 171 at the center of the draw bar 17 and the central hole 21 of the arbor 15, the flow path 28 of the rotating member 26, and the gap 34, as indicated by arrows in FIG. It is supplied toward the cutting edge 292 at the processing position.

  As shown in FIGS. 2 to 4, a protrusion 41 is formed on a part of the collar member 33, and an arm 42 is fixed to the protrusion 41. A support pin 43 and a guide pin 44 are fixed to the tip of the arm 42. The support pin 43 supports a rotation preventing member 45 constituting blocking means and rotation preventing means so that it can move up and down while being biased downward by a spring 46 and is prevented from rotating by a guide pin 44. . The anti-rotation member 45 is retained by a retaining ring 47. A detent protrusion 48 is fixed to the outer periphery of the detent member 45. The anti-rotation member 45 can be fitted into a recess 49 formed on the outer periphery of the base of the arbor 15 by the urging force of the spring 46, and the arm 42 and the collar member 33 are rotated relative to the arbor 15 at the time of fitting. It is blocked and becomes a detent state.

  A stay 50 is fixed to the outer cylinder 11, and a recess 51 and a hole 52 are formed at the tip thereof. Then, in a state where the interference between the support pin 43 and the stay 50 is avoided by the hole 52, the rotation preventing member 45 is fitted into the recess 51, and the rotation of the arm 42 and the collar member 33 is prevented, At the same time, the anti-rotation member 45 is moved upward in FIG. 1 and the anti-rotation protrusion 48 comes out of the recess 49. In this state, the arbor 15 and the cutter 29 are allowed to rotate. Then, when the rotation preventing member 45 is fitted into the recess 51 and is prevented from rotating, the supply port 35 is fixedly arranged in a state of being directed toward the blade edge 292 at the skiving position.

Next, the operation of the skiving apparatus configured as described above will be described.
At the time of skiving processing on the gear workpiece 101, as shown in FIG. 1, the detent protrusion 48 is fitted in the recess 51 of the stay 50, and the arm 42 and the collar member 33 are prevented from rotating. For this reason, the supply port 35 of the collar member 33 is fixedly arranged in a state in which the supply port 35 faces the portion of the blade edge 292 at the skiving position.

  In this state, when the rotating shaft 13 and the arbor 15 are rotated, the cutter 29 is rotated and, for example, skiving processing for the gear work 101 for the internal gear is executed. At this time, the cutting fluid from the flow path 28 and the like is intensively supplied from the supply port 35 toward the cutting edge 292 at the skiving position. For this reason, smooth and highly accurate cutting can be performed using a sufficient amount of cutting fluid.

  When the cutter 29 is attached to and detached from the shaft portion 23 of the arbor 15 for re-grinding the cutter 29, the arbor 15 is removed from the rotating shaft 13 with the skiving apparatus stopped. In this way, the non-rotating protrusion 48 is fitted into the recess 49 on the arbor 15 side by the spring force of the spring 46, and the rotation of the arm 42 and the collar member 33 with respect to the arbor 15 is prevented. Therefore, in this state, if the rotating member 26 is rotated by a wrench acting on the hexagonal hole 261 and the female screw 22 is removed from the male screw 27, the cutter 29 can be removed and re-polishing can be performed. Then, when the cutter 29 is mounted again, the work in the reverse order to that at the time of removing the cutter is performed, and the detent member 45 may be fitted into the recess 51 of the stay 50. When the cutting edge 292 of the cutter 29 is retracted by re-grinding or when the position of the cutting edge 292 is moved by replacement with a new cutter 29, the spacer 31 is replaced with one having a different thickness as necessary. .

The present embodiment has the following effects.
(1) A supply port 35 directed to the skiving position by the blade edge 292 is fixedly arranged at a fixed position on the rotation center side of the blade edge 292 of the cutter 29. For this reason, even if the amount of the circulating cutting fluid is reduced, a large amount of the cutting fluid can be intensively supplied to the skiving position. Therefore, smooth and highly accurate skiving can be achieved, and overheating of the processing position can be prevented. In addition, since the amount of the cutting fluid to be circulated can be reduced, the circulation mechanism including the pump can be miniaturized and the power consumption can be reduced.

  (2) A collar member 33 that is rotated relative to the rotating member 26 is provided around the rotating member 26 that rotates integrally with the arbor 15, and when the arbor 15 is rotated integrally with the rotating shaft 13, the collar member 33. Is prevented from rotating. By providing the cutting fluid supply port 35 in the collar member 33, the configuration can be simplified and the cutting fluid can be appropriately supplied toward the skiving position.

  (3) When the arbor 15 is removed from the rotary shaft 13, the anti-rotation protrusion 48 integrated with the collar member 33 engages with a part of the arbor 15 and is prevented from rotating. Is prevented from rotating with respect to the arbor 15. For this reason, the cutter 29 can be attached and detached smoothly without pressing the arm 42.

  (4) The locking member 45 has both functions of fixing the collar member 33 during skiving, in other words, fixing the supply port 35 and preventing the collar member 33 and the arm 42 from rotating when the cutter 29 is attached and detached. Since both are combined, the configuration can be simplified.

In addition, this invention is not limited to the said embodiment, It can be actualized with the following aspects.
A flow path of the cutting fluid is provided in the collar member 33 so that the cutting fluid is supplied from the flow path of the color member 33 into the gap 34 between the color member 33 and the rotating member 26.

-Omit the anti-rotation protrusion 48 and the recessed part 49.
-As the gear workpiece 101, machining for gears other than the internal gear (external gear, etc.).

  15 ... Arbor, 29 ... Skiving cutter, 35 ... Supply port, 45 ... Anti-rotation member.

Claims (5)

In the skiving processing device provided with a skiving cutter mounting part at the tip on the rotating shaft,
The skiving processing apparatus which provided the cutting fluid supply part which orient | assigns a skiving processing position to the fixed position of the rotation center side from the blade-tip position of the skiving cutter.   A collar that is rotated relative to the rotating member is provided around the rotating member that is rotated integrally with the rotating shaft, a blocking unit that blocks the rotation of the collar is provided, and the cutting fluid supply unit is provided in the collar. The skiving processing apparatus according to claim 1, wherein the skiving processing apparatus is configured by a supply port.   The skiving apparatus according to claim 2, wherein the blocking means is interposed between the collar and the apparatus frame.   The arbor is detachably provided on the rotating shaft, the mounting portion is provided on the arbor, and when the arbor is detached from the rotating shaft, the rotation preventing means is engaged with a part of the arbor and is prevented from rotating. The skiving processing apparatus according to claim 2, wherein:   The skiving apparatus according to claim 4, wherein the blocking means has a function of a rotation preventing means.