JP2020124751A - Cutter for skiving, and skiving processing device - Google Patents

Abstract

To provide a cutter for skiving, capable of contributing to easy discrimination and correct assembly of a plurality of cutter parts.SOLUTION: A cutter 10 for skiving is divided into a plurality of cutter parts 101-103 having substrates 111-113 and cutting blades 21-23, respectively. Each discrimination void 31-33 in which at least either of a size and a position is mutually different is formed at least on two of the plurality of cutter parts 101-103, respectively.SELECTED DRAWING: Figure 4

Description

The present invention relates to a cutter that is a cutting tool used for skiving and a skiving apparatus including the cutter.

A skiving cutter used for gear cutting has a plurality of cutting blades for cutting a work on the outer periphery of a base body mounted on a spindle unit. The skiving cutter is arranged such that the axis of the cutter intersects with the axis of the work. Then, when the cutter and the work are rotated by synchronous control, the cutting blade cuts the work while causing slippage with the work part of the work. The cutter is fed in the axial direction of the work.

In order to disperse the load involved in cutting, there is provided a skiving cutter that is formed into a multi-blade shape by dividing the cutting blade with a groove (for example, Patent Document 1). The base body of the cutter is formed so that the divided blade contributes to the cutting.

JP, 2008-069349, A

A skiving cutter composed of a plurality of divided blades may be divided into a plurality of parts each having a base and a dividing blade so that maintenance can be performed efficiently. In this case, the form of each component may be similar to each other. At this time, even if each part is marked, it is often difficult to distinguish each part from each other at first glance. This point is the same when paying attention to the difference in the external appearance of each component such as the width and blade length of the cutting blade.

Therefore, it is an object of the present invention to provide a skiving cutter that contributes to easily identifying a plurality of parts and assembling them correctly, and a skiving device including the skiving cutter.

The skiving cutter of the present invention includes a base body that is rotated around an axis, and a plurality of cutting blades that are formed on the base body and cut the work material. Each cutting blade includes two or more cutting blades configured to be able to share a cutting process of cutting a work material.
Further, according to the present invention, the skiving cutter is divided into a plurality of cutter parts each including a base body and a cutting blade, and at least one of the plurality of cutter parts has at least one of size and position. It is characterized in that different identification voids are formed.

In the skiving cutter of the present invention, the identification gaps formed in at least two of the plurality of cutter components are spread over the plurality of cutter components in a state where the plurality of cutter components are stacked in phase with each other. It is preferably configured to have a predetermined shape.

The skiving cutter of the present invention includes a correctness/incorrectness determination pin that is inserted into the identification space over at least two cutter parts, and the correctness/incorrectness determination pin is configured to follow the predetermined shape of the identification space. It is preferable.

In the skiving cutter of the present invention, the correctness determination pin is inserted into an identification gap formed in a plurality of cutter parts, and two or more positioning elements for mutually positioning the plurality of cutter parts so that their phases are aligned with each other. Is preferably at least one of the above.

In the skiving cutter of the present invention, the identification void is formed over at least two cutter parts such that the cross-sectional area is gradually reduced from one end to the other end in the axial direction of the skiving cutter. Is preferred.

In the skiving cutter of the present invention, it is preferable that at least two cutter components are configured such that the identification void is continuous in a direction inclined with respect to the axial direction of the skiving cutter.

In the skiving cutter of the present invention, it is preferable that the identification void is a key groove into which a key provided in a support that supports the skiving cutter is inserted.

In the above-mentioned configuration, the key groove is formed so as to gradually move away from the axial center from one end in the axial direction of the skiving cutter to the other end, and the dimension in the radial direction of the skiving cutter changes. It is preferable.

In the skiving cutter of the present invention, the plurality of axially adjacent cutter components includes at least two cutter components that are stacked by engagement of the convex portion and the concave portion, and one of the adjacent cutter components is convex. Preferably, the other of the adjacent cutter components is provided with a concave portion into which the convex portion is inserted.

A skiving apparatus of the present invention is characterized by including the above-mentioned skiving processing cutter and a rotary shaft device that transmits a rotational driving force to the skiving processing cutter.

According to the present invention, since a plurality of cutter components can be easily identified based on the difference in the size and position of the identification void, as will be described later in detail, the plurality of cutter components can be easily identified without erroneous stacking order or front/back direction. The cutter parts can be assembled efficiently and correctly.

It is a perspective view which shows the skiving apparatus which concerns on 1st Embodiment. It is a side view which shows an example of the cutter for skiving processing with which the processing apparatus shown in FIG. 1 is equipped. This cutter is divided into three parts. It is a figure which shows the cutter for skiving and a work. The axis of the cutter and the axis of the work intersect. FIG. 4 is a vertical cross-sectional view of the skiving cutter shown in FIG. 1, and corresponds to a cross-sectional view taken along the line IV-IV of FIG. 5 showing a laminated body of cutter components. It is a top view which shows the laminated body of the 1st-3rd cutter components from the direction of the V arrow of FIG. (A) is a plan view showing the front side of the third cutter part, (b) is a plan view showing the front side of the second cutter part, and (c) is a plan view showing the front side of the first cutter part. .. (D) is a plan view showing the back side of the third cutter component. (A) is a figure which shows the identification space|gap continuous over the some cutter components laminated|stacked in the state with the correct order and front-back direction. (B) is a figure which shows an example of the space|gap for identification when the 1st-3rd cutter components are laminated|stacked in the wrong order. (B) is a figure which shows an example of the space|gap for identification when the front and back of some cutter components are reversed and laminated. It is a perspective view which shows the laminated body of a cutter component, and an arbor. (A) is a longitudinal cross-sectional view showing a skiving cutter according to the second embodiment. (A) is the IXa-IXa sectional view taken on the line of (b). (B) is a plan view showing the laminated body of the cutter parts shown in (a) from the direction of the arrow IXb. (A) is a longitudinal cross-sectional view showing a skiving cutter according to a third embodiment. An identification pin is inserted in the identification space. (B) is a figure which shows the example which the direction of the diameter reduction of the space|gap which inserts a correctness determination pin is reverse to (a). It is a longitudinal cross-sectional view showing a skiving cutter according to a fourth embodiment. The correctness determination pin is inserted in the identification gap along the inclined direction. It is a longitudinal section showing a skiving cutter concerning a modification of a 4th embodiment. (A)-(c) is a top view which shows each decomposed|disassembled component of the laminated body of the cutter components shown in FIG. It is a longitudinal cross-sectional view showing a skiving cutter according to a fifth embodiment. (A) is a longitudinal cross-sectional view showing a skiving cutter according to a sixth embodiment. (B) is a plan view showing the second cutter component in the direction of the XVb arrow, and (c) is a plan view showing the first cutter component in the direction of the XVc arrow. (A) is a longitudinal cross-sectional view showing a skiving cutter according to a modification of the sixth embodiment. (B) is a vertical cross-sectional view showing a skiving cutter according to another modification of the sixth embodiment.

[First Embodiment]
An embodiment of the present invention will be described below with reference to the accompanying drawings.
The skiving apparatus 1 shown in FIG. 1 processes an internal gear inside a circular workpiece 9 (workpiece) by a skiving cutter 10 (cutter 10).
The skiving apparatus 1 includes a bed 2, a column 3, a saddle 4, a swivel head 5, a slider 6, a spindle unit 7, a rotary table 8, and a controller (not shown).
A cutter 10 (FIG. 2), which is a cutting tool for skiving, is detachably attached to the spindle unit 7.

Hereinafter, the vertical direction will be referred to as the Z-axis direction. The X-axis direction is defined in a horizontal plane orthogonal to the Z-axis direction, and the direction orthogonal to both the X-axis direction and the Z-axis direction is called the Y-axis direction.

As shown in FIG. 1, a column 3 is supported on the bed 2 so as to be horizontally movable in the X-axis direction. A saddle 4 is supported on the column 3 so as to be vertically movable in the Z-axis direction.
A swivel head 5 is supported on the saddle 4 so as to be rotatable around a head shaft 5x. The head axis 5x is along the X-axis direction.
A slider 6 is supported on the swivel head 5 so as to be horizontally movable in the Y-axis direction. A spindle unit 7 is fixed to the slider 6.

The spindle unit 7 includes a drive source (not shown) such as a servo motor, and an arbor 71 (FIG. 4) that is a support body that supports the cutter 10.
As shown in FIG. 4, when the cutter 10 is attached to the arbor 71, the rotational driving force obtained from the drive source of the spindle unit 7 is transmitted to the cutter 10 via the arbor 71, so that the cutter 10 is attached to the spindle unit. It rotates around the main axis A of 7. The main axis A coincides with the axis of the cutter 10.

A turntable 8 is provided at a position in front of the column 3 on the bed 2 (FIG. 1) so as to be rotatable about an axis 8z. The axis line 8z is along the Z direction. The axis 8z coincides with the axis of the work 9 fixed to the rotary table 8.

By driving each of the column 3, the saddle 4, and the slider 6 by a control device (not shown), the spindle unit 7 and the cutter 10 can be moved in each of the X-axis, Y-axis, and Z-axis directions.
Further, by driving the revolving head 5, the main spindle unit 7 and the cutter 10 can be revolved around the head shaft 5x as a center of rotation and tilted with respect to the rotary table 8 and the work 9.

In the cutter 10, as shown in FIG. 3, the main axis A, which is the axis of the cutter 10, intersects with the axis of the work 9 at a predetermined angle θ (intersection angle), and the cutter 10 is inscribed in the work 9. It is positioned in the state of At this time, at the inscribed position between the cutter 10 and the work 9, the tangent line TL drawn in the direction orthogonal to the axis of the cutter 10 intersects the axis of the work 9.
Considering the machining speed due to the slip between the work 9 and the cutter 10, the crossing angle θ is appropriately determined so that the twist angle of the internal gear cut by the work 9 and the twist angle of the cutting blade 20 of the cutter 10 correspond to each other. To be

By controlling the spindle unit 7 and the rotary table 8 by a control device (not shown), the cutter 10 is rotated about the spindle A and the workpiece 9 is rotated about the axis so that the cutter 10 and the workpiece 9 are synchronized with each other. The cutting blade 20 of each rotating cutter 10 cuts the work 9 while causing slippage with the work part of the work 9. By controlling the position of the saddle 4 while rotating the cutter 10 and the work 9, the spindle unit 7 and the cutter 10 are sent in the Z-axis direction with respect to the work 9, thereby forming an internal gear on the work 9. ..
Cutting liquid is used for cooling and lubricating the cutter 10 and the work 9 and removing chips during cutting.

The configuration of the cutter 10 will be described with reference to FIGS. 2, 4, and 5.

As shown in FIGS. 2 and 4, the cutter 10 has a substantially cylindrical base 11 and a plurality of cutting blades 20 formed on the outer peripheral portion of the base 11, as shown in FIGS. 2 and 4.
Hereinafter, the direction of the axis of the base 11 will be referred to as the axial direction D1.

The cutter 10 includes a cutting blade 20 for cutting an internal gear, which meshes with a helical gear, on the work 9. The cutting blades 20 are arranged in the circumferential direction of the base 11 while being twisted with respect to the axis of the base 11.

As shown in FIG. 2, each cutting blade 20 is divided into a plurality of cutting blades 21 to 23 in the direction of the blade line B.
The “step” corresponds to each of the dividing blades 21 to 23. The number N of cutting blades in this embodiment is three. In the cutting process, the work 9 is cut in the order of the first cutting blade 21 (one step), which is the frontmost step, the second cutting blade 22 (two steps), and the third cutting blade 23 (three steps).

The first cutting blade 21 and the second cutting blade 22 are rough blades for roughing the work 9, and the third cutting blade 23 is a finishing blade for finishing the work 9.
That is, the cutting process (roughing and finishing) by the cutter 10 is shared by the first to third cutting blades 21 to 23.

In the present invention, the number N of cutting blades is not limited, and the cutter 10 may include two cutting blades or four or more cutting blades. In the case of two stages, the cutter 10 includes one rough blade and one finishing blade. In the case of 4 or more steps, there is no limitation on the number of steps of the rough blade and finishing blade.
Further, the number N of cutting blades and the number M of cutter parts do not necessarily have to match. For example, the cutter 10 may be divided into two parts, a cutter part including two cutting blades 21 and 22 and a cutter part including one cutting blade 23.

Taking the second dividing blade 22 as an example, the shape of the cutting blade will be briefly described. The first cutting blade 21 and the third cutting blade 23 have the same basic shape.
As shown in FIGS. 2 and 4, the second dividing blade 22 has a rake face 22A, an outer peripheral flank face 22B, a rear face 22C, and side flank faces 22D and 22E (FIG. 2). The rake face 22A and the outer peripheral flank face 22B form the outer peripheral cutting edge 22F. The rake face 22A and the side flanks 22D and 22E form the side cutting edges 22G and 22H (FIG. 2), respectively.

As shown in FIGS. 2 and 4, the cutter 10 is divided into a plurality (here, three) of cutter parts 101 to 103 in the axial direction D1.
The first cutter component 101 includes a base 111 and a first cutting blade 21. The base 111 is formed in an annular shape. The first dividing blade 21 is integrally formed on the outer peripheral portion of the base 111. The same applies to the second and third cutter parts 102 and 103. The second cutter component 102 includes a base 112 and a second cutting blade 22, and the third cutter component 103 includes a base 113 and a third cutting blade 23.

The first to third cutter parts 101 to 103 are laminated in order of the first cutter part 101, the second cutter part 102, and the third cutter part 103 from the tip portion 711A side of the arbor 71 facing the work 9.
When the first to third cutter parts 101 to 103 are stacked, each of the rake faces 21A, 22A, and 23A of the first to third cutting blades 21 to 23 generally has a tip side in the axial direction D1 (described later). ).

As shown in FIG. 2 and FIG. 4, the distance from the axis to the outer end (dividing blade) in each of the first to third cutter parts 101 to 103 is smaller as it is closer to the tip 711A of the arbor 71. .. By doing so, the cutter 10 is prevented from interfering with the work 9, and the first to third cutter parts 101 to 103 contribute to cutting.

The cutting blade requires re-polishing after it has been used for a certain period of time in order to restore its cutting property. Even if the cutting blades 21 to 23 of the first to third cutter parts 101 to 103 are used for the same period of time, the wear state varies depending on their roles. Therefore, the required frequency of re-polishing differs among the first to third cutter parts 101 to 103. Further, the cutting blade may have a life due to repeated re-polishing or chipping. For this reason, when the cutter 10 is divided into a plurality of cutter parts 101 to 103, replacement and re-polishing can be performed in units of cutter parts, so that maintenance work can be performed efficiently and it is economically advantageous. ..

As shown in FIGS. 4 and 5, the first to third cutter parts 101 to 103 can be integrally assembled by fitting a pin 13 inserted into a hole 12 penetrating them in the axial direction D1. it can. The axes of the assembled first to third cutter parts 101 to 103 coincide with each other.
By the plurality of pins 13, the first to third cutter parts 101 to 103 can be positioned with respect to each other such that the phases of the cutting blades 21 to 23 match in the circumferential direction. Here, as an example, two pins 13 are used.

The inner diameters of the first to third cutter parts 101 to 103 are the same, but the outer diameters and thicknesses (dimensions in the axial direction D1) are slightly different. Therefore, even if the blade shapes and blade lengths of the cutter parts are different, the overall shapes of the first to third cutter parts 101 to 103 are similar. It is necessary to assemble the cutter parts 101 to 103 correctly without confusion.

Therefore, the main feature of the cutter 10 of the present embodiment is that it is provided with the identification voids 30 (31 to 33) that help identify the first to third cutter components 101 to 103.
The identification gap 30 of the present embodiment also serves as a key groove that engages with the key 713 of the arbor 71 in order to transmit the rotational driving force of the main spindle unit 7 to the cutter 10.

As shown in FIGS. 4 and 5, when the first to third cutter components 101 to 103 are stacked in phase with each other, they serve as identification voids formed in the first to third cutter components 101 to 103, respectively. The first to third voids 31 to 33 have a predetermined shape. The first to third voids 31 to 33 are collectively referred to as the identifying voids 30.
Specific configurations of the first to third voids 31 to 33 will be described later.

The arbor 71 is formed so as to project downward in FIG. 4, and the cutter 10 is attached to the tip end side.
The arbor 71 includes a small diameter portion 711 that is surrounded by the cutter 10 and a large diameter portion 712 that is fastened to the cutter 10 by screws 24 and 25 that are fastening members.

When the cutter 10 is attached to the arbor 71, the main axis A coincides with the axial direction D1 of the base 11 of the cutter 10. The tip end 711A side of the small diameter portion 711 is referred to as the tip end side in the axial direction D1. The large diameter portion 712 side of the arbor 71 in the axial direction D1 is referred to as the base end side in the axial direction D1.

The small diameter portion 711 is formed with a key 713 that engages with the first to third cutter components 101 to 103. The key 713 has a shape that follows the shape of the identification gap 30.
A fastened surface 712A orthogonal to the axial direction D1 is formed in the large diameter portion 712 having a diameter larger than that of the small diameter portion 711.

As shown in FIG. 4, when the key 713 formed in the small diameter portion 711 is inserted into the identification gap 30 as the key groove and is fitted to the first to third cutter parts 101 to 103, The relative rotation between the cutter 10 and the arbor 71 is restricted. Further, the first to third cutter parts 101 to 103 are mutually positioned in the circumferential direction. The cutter 10 rotates integrally with the arbor 71.
As shown in FIG. 5, the first to third cutter parts 101 to 103 of the present embodiment are provided with two key grooves (identification voids 30) in the inner peripheral part thereof, and the key 713 is also a small diameter part of the arbor 71. Two are provided in 711 (see FIG. 8). By restricting the relative rotation of the first to third cutter parts 101 to 103 with respect to the arbor 71 by the plurality of keys 713 and the key groove, it is possible to reduce the bending stress generated in each key 713.

When the inner peripheral parts of the first to third cutter parts 101 to 103 are inserted into the small diameter part 711 and the male screw 25 is engaged with the nut 24 arranged between the third cutter part 103 and the tip part 711A of the small diameter part 711. The cutter parts 101 to 103 are fixed between the nut 24 and the fastened surface 712A of the large diameter portion 712 of the arbor 71.

In the present embodiment, the pin 13 shown in FIGS. 4 and 5 is not essential, but when the first to third cutter parts 101 to 103 are integrated using the pin 13, the arbor 71 is provided with the first to third cutter parts. It becomes easy to perform the work of attaching 101 to 103. At this time, by using two or more pins 13, it is possible to match the phases of the respective cutting blades of the first to third cutter parts 101 to 103 before being attached to the arbor 71, so that the above-described work is easier Become.

Now, the identification gap 30 will be described with reference to FIGS. 4 to 7.
First, the first to third voids formed in each of the cutter parts 101 to 103 will be described.

6A to 6C show the third cutter component 103, the second cutter component 102, and the first cutter component 101 in the order of being arranged from the base end side to the tip end side in the axial direction D1. 6A to 6C, the front side of the first to third cutter parts 101 to 103 on the base end side in the axial direction D1 (the side located on the base end side in the axial direction D1 in FIG. 4). It is shown.
In the following description, the “radial direction” means the radial direction of the cutter 10.

As shown in FIG. 6A, a third void 33 is formed in the inner peripheral portion of the third cutter component 103. The third gap 33 is recessed radially outward from the inner peripheral portion of the third cutter component 103 and has a rectangular shape in a plan view. The third gap 33 penetrates the third cutter component 103 in the thickness direction.
It is assumed that the radial dimension of the third gap 33 on the surface 103A of the third cutter component 103 is L3.
An inclined surface 331 that connects the front surface 103A and the back surface 103B in the third gap 33 is inclined with respect to the axial direction D1. The radial dimension L2 of the third gap 33 on the back surface 103B is smaller than L3.
The second cutter component 102 and the first cutter component 101 are also formed with inclined surfaces 321 and 311 that are inclined with respect to the axial direction D1 so as to be continuous with the inclined surface 331.

As shown in FIG. 6B, the second cutter component 102 has a second gap 32. The second gap 32 also penetrates the second cutter component 102 in the thickness direction.
The radial dimension L2 of the second void 32 on the front surface 102A of the second cutter component 102 is equal to the radial dimension L2 of the back surface 103B of the third void 33.
The radial dimension L1 of the second void 32 on the back surface 102B of the second cutter component 102 is smaller than the radial dimension L2 of the front surface 102A of the second void 32.

As shown in FIG. 6C, the first cutter component 101 has a first gap 31 formed therein. The first void 31 also penetrates the first cutter component 101 in the thickness direction. However, in the present embodiment, the first gap 31 does not necessarily have to penetrate the first cutter component 101.
The radial dimension L1 of the first void 31 in the front surface 101A of the first cutter component 101 is equal to the radial dimension L1 of the back surface 102B of the second void 32.
The radial dimension L0 of the first void 31 on the back surface 101B of the first cutter component 101 is smaller than the radial dimension L1 of the front surface 101A of the first void 31.
From the above, the radial dimensions of the first to third voids 31 to 33 are as shown in the following formula (1).
[Equation 1]
L0<L1<L2<L3 (1)

The first to third voids 31 to 33 are formed at easily visible positions in each of the first to third cutter parts 101 to 103. Therefore, the dimensions (L1 to L3, etc.) of the first to third voids 31 to 33 are different, so that the first to third cutter parts 101 to 103 have a difference in appearance required for easy identification. Becomes
In other words, at a glance of each of the first to third cutter parts 101 to 103, the first to third cutter parts 101 can be considered from the relation of the length, middle, and short of the dimensions of the first to third gaps 31 to 33. It becomes possible to easily identify ˜103.

Regarding the direction of the front and back of each of the first to third cutter components 101 to 103, as shown in FIG. 6D by way of example, the back surface 103B of the third cutter component 103, the difference in size and appearance of the third gap 33. It can be easily determined based on. That is, comparing the front side shown in FIG. 6(a) and the back side shown in FIG. 6(d) (the side located on the tip side in the axial direction D1 in FIG. 4), the diameter of the third gap 33 on the visually inspected side. The lengths L3 and L2 in the directions are different, and the inclined surface 331 that appears on the front side is invisible from the back side as shown in FIG. 6D. The same applies to the first and second cutter parts 101 and 102.

From the above, the first to third cutter parts 101 to 103 are correctly identified based on the difference in appearance that appears in the first to third cutter parts 101 to 103 due to the difference in the sizes of the first to third gaps 31 to 33. be able to. Therefore, it can contribute to easily assembling the first to third cutter parts 101 to 103 in the correct order and in the correct direction.

The first to third voids 31 to 33 differ from each other in the dimensions L0 to L3 as described above, and also have a predetermined shape when the first to third cutter components 101 to 103 are stacked in phase with each other. It is also characterized by presenting.
The “predetermined shape” is a shape that achieves visual and spatial continuity when the first to third cutter parts 101 to 103 are stacked in a state in which the phases, the order, and the front and back directions are all correct. I shall say.

The overall shape of the identification void 30 in which the first to third voids 31 to 33 are continuous will be described.
As shown in FIG. 7A, when the first cutter component 101, the second cutter component 102, and the third cutter component 103 are stacked in the correct order with the phases aligned and in the correct front and back directions, FIG. As can be understood from (a) to (c), the first to third voids 31 to 33 are visually identified as one continuous space based on the difference in the radial dimensions L0 to L3. A space 30 for use is presented.

While a typical key groove has a constant radial dimension (groove depth) over the entire axial direction, the identification gap 30 gradually increases from the distal end side toward the proximal end side in the axial direction D1. The radial dimension changes away from the axial center (A) so as to gradually increase toward the radially outer side.
Therefore, continuous slopes 301 are formed in the first to third cutter parts 101 to 103 in which the identification gap 30 is formed. The inclined surface 301 is formed by the inner surface of the first to third cutter parts 101 to 103 arranged flush or substantially flush with each other. The identification space 30 is divided into a quadrangular pyramid shape that narrows toward the tip side in the axial direction D1 between the inclined surface 301 and the two surfaces 302 and 303 (FIG. 5) along the axial direction D1. Has been done.

As shown in FIGS. 5 and 7A, when the stacking order of the first to third cutter parts 101 to 103 and the front and back directions are correct, continuity is established in the identification gap 30. At this time, the identification gap 30 is visually observed from the front side of the third cutter component 103, and it is confirmed that the order of stacking and the front and back directions are correct based on the fact that the inclined surface 301 is smooth over the entire axial direction D1. You can check.

FIG. 7B shows an example in which the second cutter component 102, the first cutter component 101, and the third cutter component 103 are stacked in this order from the tip end side in the axial direction D1. In this case, since the identification gap 30 has unexpected steps 304 and 305, the identification gap 30 lacks continuity.

FIG. 7C shows an example in which the front and back directions of the second cutter component 102 are stacked differently from the front and back directions of the first cutter component 101 and the third cutter component 103. Also in this case, since the steps 306 and 307 are present in the identification space 30, the identification space 30 lacks continuity.
In any of the examples shown in FIGS. 7B and 7C, no continuous inclined surface is formed inside the first to third cutter parts 101 to 103.
As described above, it is possible to determine whether the order of the first to third cutter parts 101 to 103 and the front and back directions of the cutter parts 101 to 103 are correct or incorrect using the identification gap 30.

Next, an example of a procedure for assembling the cutter 10 of this embodiment will be described.
First, the first to third cutter parts 101 to 103 to be assembled (FIGS. 6A to 6C) are collected. At this time, due to the difference in size of the first to third voids 31 to 33 formed in each of the first to third cutter components 101 to 103, and the front side due to the different dimensions of the voids on the front and back of each cutter component. Each of the first to third cutter components 101 to 103 can be easily identified including the front and back sides based on the difference in appearance from the back side.
Therefore, as shown in FIG. 7A and FIG. 5, when the first to third cutter components 101 to 103 are stacked in phase with each other, the first to third cutter components 101 to 103 have the correct order. You can give the correct front and back orientation.

The pin 13 is used to match the phases of the first to third cutter parts 101 to 103. By this correspondence, the positions of the key grooves (first to third gaps 31 to 33) of the first to third cutter parts 101 to 103 in the circumferential direction are also determined.
At this time, it is confirmed that a smooth inclined surface 301 is recognized in the identification space 30. The inclined surface 301 exists over the entire axial direction D1.
When the inclined surface 301 cannot be recognized, the identification space 30 lacks continuity, and the order of stacking the first to third cutter parts 101 to 103 and the front and back directions are incorrect. In that case, the first to third cutter parts 101 to 103 are once separated, and the correct order and correct front and back orientation are corrected.
That is, even if the first to third cutter components 101 to 103 are erroneously identified before being stacked, the use of the identification void 30 causes the first to third cutter components 101 to erroneously in the order and front and back. It is possible to prevent 103 from being stacked.

After the laminated body of the first to third cutter parts 101 to 103 is formed by the above, the laminated body is attached to the small diameter portion 711 of the arbor 71, as shown in FIG. Here, if the key 713 having a shape following the shape of the identification gap 30 cannot be inserted into the identification gap 30 that is the key groove over the entire axial direction D1, the first to third cutter parts 101. The stacking order of No. 103 to No. 103 and the orientation of the front and back are incorrect. In that case, the identification gap 30 is checked again by rearranging the first to third cutter parts 101 to 103 in the correct order and in the correct front and back directions.
When the key 713 is inserted into the identification gap 30 of the first to third cutter parts 101 to 103 without any trouble, the nuts 24 and the male screw 25 fix the first to third cutter parts 101 to 103 to the arbor 71. ..

As described above, according to the cutter 10 of the present embodiment, since the plurality of cutter components 101 to 103 are easily identified and the identification gap 30 is provided as a mechanism for correctly assembling, the stacking of It is possible to easily and correctly assemble the first to third cutter parts 101 to 103 without making a mistake in the order or the orientation of the front and back. Also, maintenance can be performed efficiently.

The sizes of the first to third voids 31 to 33 of the cutter parts 101 to 103 are different, and the identification void 30 in which the first to third voids 31 to 33 are continuous has a predetermined shape. As a result, it is possible to recognize the order and orientation more visually and intuitively than when reading the information of the order and orientation indicated by the symbols respectively stamped on the cutter parts 101 to 103. However, the work efficiency can be improved as compared with the case of assembling the first to third cutter parts 101 to 103.
Further, the end faces of the respective cutter parts 101 to 103, for example, the markings on the front surface 103A and the back surface 103B of the third cutter part 103 shown in FIG. It may be hidden by being stacked. However, the identification gap 30 of the present embodiment can be useful for confirming the order and orientation of the cutter components 101 to 103 even when the first to third cutter components 101 to 103 are stacked.
Therefore, according to the identification void 30, it is possible to improve the reliability of the product by giving redundancy to the correctness determination regarding the assembly of the first to third cutter parts 101 to 103.
Since the identification void 30 also serves as the key groove, the redundancy can be further enhanced.

To obtain a mechanism for easily identifying and correctly assembling the plurality of cutter parts 101 to 103, it is only necessary to process the first to third voids 31 to 33 having predetermined dimensions in each of the cutter parts 101 to 103. Is enough. No additional parts needed.
Moreover, since the first to third voids 31 to 33 also serve as the key grooves, the number of processed parts does not increase. The first to third voids 31 to 33 can be processed into the first to third cutter components 101 to 103 in place of the markings for the purpose of displaying the order of the cutter components 101 to 103 and the front and back directions.
As described above, it is possible to easily identify and correctly assemble a plurality of cutter parts 101 to 103 while suppressing costs.

In this embodiment, the key 713 is integrated with the arbor 71. However, the present invention is not limited to this case. The arbor 71 and the key 713 may be formed separately. In this case, for example, a groove is provided in the small diameter portion 711 of the arbor 71, and in a state where the key 713 is fitted in the groove, a plurality of cutter parts 101 to 103 positioned in the circumferential direction with respect to the key 713 are provided. The laminated body is attached to the small diameter portion 711.
Further, in the present embodiment, the first to third gaps 31 to 33 are formed to insert the key 713 into the first to third cutter parts 101 to 103. However, the present invention is not limited to this case. It is also possible to provide a convex portion on the inner peripheral surface of each of the first to third cutter components 101 to 103 and form a groove in the arbor 71 for inserting the convex portion. Further, the present invention does not depend on the arrangement of the holes 12 and the identification voids 30 in the cross section of the cutter 10. For example, the hole 12 and the identification gap 30 do not have to be arranged in the cross section of the cutter 10 in a direction perpendicular to the axis of the cutter 10.
In addition, in the present embodiment, the dimensional relationship in the radial direction of the first to third voids 31 to 33 is specified, and the case where the inclined surface 301 of the identifying void 30 is formed smoothly is shown. However, the present invention is not limited to this case. For example, the inclined surfaces 301 of the identification gap 30 do not necessarily have to have the same inclination angle as in the example shown in FIG. It suffices that the stacked body of the plurality of cutter parts 101 to 103 can be attached to the small diameter portion 711 of the arbor 71 and can be visually identified as one continuous space.
Further, in the present embodiment, it is premised that all the cutter parts 101 to 103 are laminated at the same time and then mounted on the small diameter part 711 of the arbor 71. However, when the number of cutter parts is large, it may be difficult to stack all the cutter parts at the same time. In this case, the measures shown in this embodiment may be performed for each arbitrary unit (number of laminated layers).

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 9(a) and 9(b).
In the following, items different from the first embodiment will be mainly described. The same components as those in the first embodiment are designated by the same reference numerals.

The skiving cutter 120 (cutter 120) of the second embodiment includes an identification void 40 that does not also serve as a key groove. In the second embodiment, the key 714 of the arbor 71 that engages with the first to third cutter parts 101 to 103 has a constant radial height from the outer peripheral portion of the small diameter portion 711 in the axial direction D1. .. The key groove 14 formed in each of the first to third cutter parts 101 to 103 also has a constant radial dimension (depth) in the axial direction D1.
As shown in FIG. 9B, one key groove 14 and one pin 13 determine the phases of the first to third cutter parts 101 to 103.
Note that, in the present embodiment, the key 714 and the key groove 14 are not limited to the dimension (depth) in the radial direction being constant along the axial direction D1. It suffices that the stacked body of the plurality of cutter parts 101 to 103 can be properly mounted on the small diameter portion 711 of the arbor 71.

As shown in FIGS. 9A and 9B, the identification gap 40 includes first to third gaps 41 to 43 formed in the first to third cutter parts 101 to 103, respectively. No key, pin, or the like is inserted into this identification gap 40.
The identification void 40 has a circular cross-sectional shape, and the cross-sectional area gradually decreases, that is, the diameter decreases, from the proximal end side toward the distal end side in the axial direction D1. Therefore, the identification gap 40 is formed in a truncated cone shape.
It should be noted that the present embodiment holds true even if the identification gap 40 is gradually reduced in diameter from the distal end side toward the proximal end side in the axial direction D1. The identification void 40 may have any cross-sectional shape. The present embodiment holds true even if the identification void 40 has an elliptical or rectangular cross-sectional shape and the cross-sectional area gradually decreases from the base end side toward the tip end side in the axial direction D1.

The identification void 40 of the second embodiment is a series of first to third voids 41 to 43, which are frustoconical and have different diameters. The diameter increases in the order of the first void 41, the second void 42, and the third void 43.
Therefore, the first to third voids 41 to 43 can be easily identified based on the difference in diameter.

Further, when the first to third cutter components 101 to 103 are stacked in phase with each other as shown in FIG. 9B, the first to third cutter components are based on the continuity in the identification gap 40. It is possible to determine whether the order of 101 to 103 or the orientation of the front and back is correct. Of the openings at both ends of the identification space 40, the entire wall surface 401 defining the identification space 40 is visible from a large opening 402 located on the base end side in the axial direction D1.

According to the second embodiment as well, the identification gap 40 allows the first to third cutter components 101 to 103 to be easily and correctly assembled without erroneous stacking order or front/back orientation. Also, maintenance can be performed efficiently.
In addition, although the case where each of the voids 41 to 43 is formed in all the cutter components 101 to 103 has been shown in the present embodiment, the present invention is not limited to this. For example, the cutter component located at the extreme end, that is, either the first cutter component 101 or the third cutter component 103 in FIG. 7A, does not have the corresponding first void 41 or third void 43. It doesn't matter. This is because it suffices that it can be visually confirmed from either the front side or the back side.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
The skiving cutter 130 (cutter 130) according to the third embodiment includes the same identification gap 40 as that of the second embodiment. Unlike the cutter 120 of the second embodiment, the correctness determination pin 45 is inserted into the identification gap 40.
The correctness determination pin 45 is formed in a shape that follows the shape of the identification gap 40, that is, a truncated cone shape. The correct/incorrect determination pin 45 inserted into the identification space 40 and penetrating the first to third cutter parts 101 to 103 has the same phase as the first to third cutter parts 101 to 103 like the pin 13 and the key groove 14. It is one of the elements that circumferentially position them for alignment.

In the third embodiment, the phase of the first to third cutter parts 101 to 103 can be adjusted by the single correctness determination pin 45 and the single key groove 14.

In the third embodiment, in addition to the distinguishability of the distinguishing gap 40 shown in the second embodiment, the insertability of the correct/incorrect judgment pin 45 into the distinguishing gap 40 further causes the first to third cutter parts 101 to 101. It is possible to notice the validity of the stacking order of 103 and the orientation of the front and back.

In the example shown in FIG. 10B, the shape of the identification void 46 is different from that of the identification void 40 of the third embodiment shown in FIG. 10A.
Contrary to the identification gap 40 described above, the identification gap 46 is gradually reduced in diameter from the distal end side toward the proximal end side in the axial direction D1. Further, the opening 43A on the base end side in the axial direction D1 of the identification space 46 and the opening 43B on the tip end side in the axial direction D1 are eccentric.
The correctness determination pin 47 is also formed in a shape that follows the shape of the identification gap 46.

In addition, the present embodiment is applicable even when the cutter parts are not collectively penetrated by a single pin. The first to third cutter parts 101 to 103 can be positioned relative to each other between adjacent cutter parts. For example, instead of using the pin 13, the first cutter component 101 and the second cutter component 102 are fixed by a tapping screw inserted into a hole that penetrates one of the first cutter component 101 and the second cutter component 102, and Similarly, the second cutter component 102 and the third cutter component 103 may be fixed to integrate the first to third cutter components 101 to 103.

[Fourth Embodiment]
The skiving cutter 140 (cutter 140) shown in FIG. 11 is different from the identification void 40 (FIG. 10A) of the third embodiment in the shape and position of the identification void 50.
The identification void 50 is continuous in a direction inclined with respect to the axial direction D1. The diameter of the identification void 50 is constant from one end to the other end in the continuous direction. A correctness determination pin 505 having a constant diameter over the entire length is inserted into the identification gap 50.
The identification void 50 includes first to third voids 51 to 53 formed in the first to third cutter components 501 to 503, respectively.

[Modification of Fourth Embodiment]
The identification gap 60 shown in FIG. 12 is gradually reduced in diameter from the base end side toward the tip end side in the axial direction D1 and is continuous in a direction inclined with respect to the axial direction D1.
The correctness/wrongness determination pin 605 inserted into the identification gap 60 is also configured to follow the shape of the identification gap 60.
The identification void 60 includes first to third voids 61 to 63 formed in the first to third cutter components 601 to 603, respectively.

The positions of the first to third voids 51 to 53 shown in FIG. 11 are different from each other. Both the positions and the dimensions of the first to third voids 61 to 63 shown in FIG. 12 are different from each other.
FIGS. 13A to 13C schematically show the third cutter component 603, the second cutter component 602, and the first cutter component 601 shown in FIG. 12 from the front side.
As can be seen from the third gap 63 shown in FIG. 13A, the second gap 62 shown in FIG. 13B, and the first gap 61 shown in FIG. 13C, these first to third gaps 61 to 61 are formed. Each 63 is separated from the axial center (A) of the cutter parts 601-603 by a different distance. That is, the positions of the cutter parts 601 to 603 in the radial direction are different. In addition to such differences in position, the diameters of the openings of the first to third voids 61 to 63 also differ.

Therefore, the first to third cutter parts 601 to 603 can be easily identified based on the positions and the diameters of the first to third voids 61 to 63.
Furthermore, when the first to third cutter components 601 to 603 are stacked in phase with each other, the first to third voids 61 to 63 are continuous, and the identification void 60 having an eccentric taper shape is used for stacking. It is possible to assemble the first to third cutter parts 601 to 603 without erroneous order or orientation of front and back.
Similar effects can be obtained by the first to third voids 51 to 53 and the identifying void 50 shown in FIG.

[Fifth Embodiment]
In the fifth embodiment shown in FIG. 14, when the convex portions and the concave portions are engaged, the corresponding convex portions and concave portions are provided to the adjacent cutter parts so that they can be stacked in the correct order and front and back directions. There is.

The skiving cutter 150 (cutter 150) shown in FIG. 14 is divided into first cutter parts 801 to 803.
It is possible to align the phases of the first to third cutter parts 801 to 803 with a pin (not shown), and to restrict the relative rotation of the first to third cutter parts 801 to 803 with respect to the arbor 71 with a key and a key groove (not shown).

The first cutter component 801 includes a first base body 111 and a first dividing blade 21. The first dividing blade 21 extends from the outer peripheral portion of the first base body 111 toward the tip side in the axial direction D1. Therefore, in FIG. 14, the first base body 111 projects toward the base end side in the axial direction D1 with respect to the first dividing blade 21. A portion of the first base 111 on the base end side in the axial direction D1 corresponds to the first convex portion 811.
Further, a first recess 812 is formed on the inner peripheral side of the rake face 21A of the first cutting blade 21.

The second cutter component 802 includes the second base 112 and the second cutting blade 22. Similarly to the first dividing blade 21, the second dividing blade 22 also extends from the outer peripheral portion of the second base 112 toward the tip side in the axial direction D1. A second recess 822 is formed on the inner peripheral side of the rake face 22A of the second cutting blade 22.
The portion of the second base 112 on the base end side in the axial direction D1 that protrudes toward the base end side in the axial direction D1 with respect to the second dividing blade 22 corresponds to the second convex portion 821.

The third cutter component 803 includes a third base body 113 and a third cutting blade 23. Since the third cutting blade 23 also extends from the outer peripheral portion of the third base body 113 toward the tip side in the axial direction D1, the third recess 832 is formed on the inner peripheral side of the rake face 23A of the third cutting blade 23. Has been done.
A portion of the third base 113, which projects toward the base end in the axial direction D1 with respect to the third cutting blade 23, on the base end side in the axial direction D1 corresponds to the third convex portion 831.

Here, a difference in diameter is given between the first convex portion 811, the second convex portion 821, and the third convex portion 831. Specifically, if the diameter of the top surface 811A of the first convex portion 811 is C1, the diameter of the top surface 821A of the second convex portion 821 is C2, and the diameter of the top surface 831A of the third convex portion 831 is C3, then (2) is satisfied.
[Equation 2]
C1<C2<C3 (2)

The diameter of the second concave portion 822 into which the first convex portion 811 is inserted is the same as the diameter C1 of the first convex portion 811. The diameter of the third concave portion 832 into which the second convex portion 821 is inserted is the same as the diameter C2 of the second convex portion 821. The diameter C0 of the first concave portion 812 is smaller than the diameter C1 of the first convex portion 811.
Since the appearances of the first to third cutter parts 801 to 803 are different based on the above difference in diameter, the first to third cutter parts 801 to 803 can be easily identified.
In addition to this, in order to stack the first to third cutter components 801-803, it is necessary to engage the protrusions in a state of being inserted into the recesses, so the first to third protrusions, the first to third Since the recesses have a difference in diameter, it is possible to prevent them from being stacked and assembled in an incorrect order or in the front and back directions.

As shown in FIG. 14, the first to third cutter components 801 to 803 are correctly placed in a state in which the first convex portion 811 is inserted into the second concave portion 822 and the second convex portion 821 is inserted into the third concave portion 832. The first cutter parts 801 to 803 can be stacked and assembled only when the stacking order and the front and back directions are correct.
For example, when trying to stack the second cutter component 802, the first cutter component 801, and the third cutter component 803 in this order from the tip end side to the base end side in the axial direction D1, the second protrusion of the second cutter component 802 is formed. It is impossible to insert 821 into the first recess 812. Therefore, there is a significant gap between the first cutter component 801 and the second cutter component 802, so that the order error can be visually and intuitively noticed.
As described above, since the stacking order and the front and back orientations are uniquely determined by the convex portions and the recessed portions of the first to third cutter components 801-803, the first and second cutting components 801 to 803 can be stacked in the wrong order. ~ The third cutter parts 801 to 803 cannot be assembled.

The fifth embodiment can be combined with other embodiments.
For example, it can be combined with the first embodiment having the identification gap 30 (FIG. 4) which also serves as the key groove. In that case, when the first to third cutter components 801 to 803 are stacked in phase with each other, the first protrusion 811 is not inserted into the second recess 822 and the second protrusion 821 is not inserted into the third recess 832. As long as the first to third cutter parts 801 to 803 cannot be stacked without a gap, the pin 13 (FIG. 5) is fitted into the hole 12 to integrate the first to third cutter parts 801 to 803. Before, you can notice the stacking order and front and back errors.

If the first to third cutter components 801 to 803 do not have the convex portions 811, 821, 831 and the concave portions 812, 822, 832, the pins 13 integrate the first to third cutter components 801 to 803. In this case, if the key 713 (FIG. 8) of the arbor 71 cannot be inserted into the identification space 30 which also serves as the key groove, and the stacking order and the front and back are mistaken, the first to third cutter parts 101 to 101 The work of pulling out the pin 13 from the hole 12 in order to separate 103 occurs.
That is, if the projections 811, 821, 831 and the recesses 812, 822, 832 are provided, the stacking order is set when stacking the first to third cutter parts 801 to 803 before inserting the pin 13 into the hole 12. Since it is assured that the front and back are correctly oriented, the work of removing the pin 13 from the hole 12 does not occur. Therefore, maintenance can be efficiently performed.

The same applies to the configuration including the pin 13 and the correctness determination pin 45 (FIG. 10A). In the sense that the stacking order and the orientation of the front and back sides are guaranteed, the correctness determination pin 45 of the third embodiment is the same as the convex portions 811, 821, 831 and the concave portions 812, 822, 832 of the fifth embodiment. is there.
The correctness determination pin 45 may be inserted into the identification gap 40 before the pin 13 is passed through the hole 12. If the pin 13 is first passed through the hole 12 and the error is noticed because the correctness determination pin 45 cannot be passed through the identification gap 40, the pin for separating the first to third cutter parts 101 to 103 is provided. The work of pulling 13 out of the hole 12 occurs. If the correctness/incorrectness determination pin 45 can be passed through the identification space 40, it is guaranteed that the orientation and the front and back of the stack are correct in addition to the phase, and therefore the work of pulling out the pin 13 from the hole 12 does not occur.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described with reference to FIGS.
Also in the sixth embodiment, as in the fifth embodiment, when the convex portion and the concave portion are engaged with each other, it is possible to stack the adjacent convex and concave portions on the adjacent cutter parts so that the convex portions and the concave portions can be stacked in the correct order and front and back directions. Giving a recess.
The skiving cutter 160 (cutter 160) shown in FIG. 15A includes first to third cutter components 901 to 903.
It is possible to align the phases of the first to third cutter parts 901 to 903 with a pin (not shown), and to restrict the relative rotation of the first to third cutter parts 901 to 903 with respect to the arbor 71 with a key and a key groove (not shown).

As shown in FIG. 15B, an annular convex portion 921 is formed on the front side (the base end side in the axial direction D1) of the second cutter component 902. An annular recess 932 corresponding to the protrusion 921 is formed on the back side of the third cutter component 903.
Further, as shown in FIG. 15C, a polygonal convex portion 911 is formed on the front side of the first cutter component 901. A polygonal concave portion 922 corresponding to the convex portion 911 is formed on the back side of the second cutter component 902.
Only the annular convex portion 921 can be inserted into the annular concave portion 932, and the polygonal convex portion 911 cannot be inserted. Further, only the polygonal convex portion 911 can be inserted into the polygonal concave portion 922, and the annular convex portion 921 cannot be inserted. That is, the combination is determined for each shape.

According to the sixth embodiment, it is possible to easily identify the first to third cutter components 901 to 903 based on the difference in the shapes of the convex portion and the concave portion, and also in the wrong order or front and back directions. It can be prevented from being laminated and assembled.

FIG. 16A shows an example in which both the annular convex portion 923 and the polygonal convex portion 924 are given to the second cutter component 902. The third cutter component 903 is formed with an annular recess 932 corresponding to the annular protrusion 923, and the first cutter component 901 is formed with a polygonal recess 912 corresponding to the polygonal protrusion 924. Are formed.
In addition, by appropriately providing convex portions and concave portions on the first to third cutter components 901 to 903, it is possible to easily identify the first to third cutter components 901 to 903 and contribute to correct assembly.

The shapes of the convex portion and the concave portion are not limited to the annular shape and the polygonal shape, and can be appropriately determined. The shapes of the convex portion and the concave portion do not necessarily have to be continuous in the circumferential direction around the axis.
For example, in the example shown in FIG. 16B, the cylindrical protrusion 925 is formed on the second cutter component 902, and the truncated cone-shaped protrusion 915 is formed on the first cutter component 901.
The cylindrical protrusion 925 is inserted into the recess 935 of the third cutter component 903.
The truncated cone-shaped protrusion 915 is inserted into the recess 926 of the second cutter component 902.
The convex portions 925 and 915 and the concave portions 935 and 926 also contribute to the identification of the first to third cutter components 901 to 903 and to uniquely determine the stacking order and the front and back directions.

The skiving cutter of the present invention is not limited in the number of cutter parts provided. Even if the number is two, it is significant to provide the identification void of the present invention because the basic shapes of the two cutter parts are similar to each other and the stacking order and the front and back directions are likely to be mistaken.
Further, in the present invention, it is not always necessary to provide identification voids to all the cutter components. For example, if the cutter blade corresponding to the step can be easily identified because the cutting blade of a specific step has a remarkable appearance, the cutter part corresponding to the step does not have an identification space. The identification gap may be provided only to the remaining plurality of cutter parts.
Alternatively, the provision of the identification gap can be omitted in one of the plurality of cutter components, even if the particular stage has no salient features.
For example, of the first to third cutter parts 101 to 103, the first cutter part 101 is not provided with an identification space, the second cutter part 102 is provided with an identification space having a long dimension, and the third cutter part is provided. If the identification gap having a short dimension is provided to 103, the first to third cutter parts 101 to 103 can be identified based on the absence/longness/shortness of the identification gap.

Other than the above, the configurations described in the above embodiments can be selected or changed to other configurations without departing from the gist of the present invention.
The skiving cutter of the present invention is provided with a plurality of cutting blades arranged to intersect the axis of the spur gear and the axis of the cutter to machine the spur gear. Good.
The shape of the blade of the skiving cutter of the present invention is not limited. Further, the skiving cutter of the present invention is not limited to the external form, and may be any form such as a straight type, a barrel type, and a taper type.

The present invention also includes a skiving cutter for processing an external gear and a skiving apparatus including the cutter.

1 skiving device 2 bed 3 column 4 saddle 5 swivel head 5x head shaft 6 slider 7 main spindle unit (rotating shaft device)
8 Rotary table 8z Axis 9 Workpiece (workpiece)
10 Skiving Cutter 11 Base 12 Hole 13 Pin 14 Key Groove 20 Cutting Blade 21 1st Cutting Edge 21A Rake Face 22 2nd Cutting Edge 22A Rake Face 22B Outer Side Flank 22C Back Side 22D, 22E Side Flank 22F Outer Edge Cut Blade 22G, 22H Side cutting edge 23 Third dividing blade 23A Rake face 24 Nut 25 Male screw 30 Identification voids 31-33 First to third voids (identification voids)
40 Identification Gap 41-43 1st-3rd Gap 43A, 43B Opening 45 Correct/Incorrect Judgment Pin 46 Identification Gap 47 Correct/Incorrect Judgment Pin 50 Identification Gap 51-53 1st-3rd Gap 60 Identification Gap 61-63th 1st-3rd space 71 Arbor (support)
Reference Signs List 101 first cutter part 101A front surface 101B back surface 102 second cutter part 102A front surface 102B back surface 103 third cutter part 103A front surface 103B back surface 111, 112, 113 base 120, 130, 140, 150, 160 skiving cutter (cutter)
301, 311, 321, 331 inclined surface 302, 303 surface 304, 305, 306, 307 step 401 wall surface 402 openings 501-503 first to third cutter parts 505 correctness determination pins 601 to 603 first to third cutter parts 605 Correctness determination pin 711 Small diameter portion 711A Tip portion 712 Large diameter portion 712A Fastened surface 713, 714 Keys 801 to 803 First to third cutter parts 811, 821, 831 First to third convex portions 811A, 821A, 831A Top surface 812, 822, 832 1st-3rd recessed parts 901-903 1st-3rd cutter parts 911, 915, 921, 923, 924, 925 convex part 912, 922, 926, 932, 935 recessed part A main axis C0-C2. Diameter D1 Axial direction B Blade line L0 to L3 Dimension TL Tangent line θ Crossing angle

Claims (10)

A skiving cutter,
A base body rotated around an axis; and a plurality of cutting blades formed on the base body for cutting a work material,
Each of the cutting blades,
Including two or more cutting blades configured to share the cutting process for cutting the work material,
The skiving cutter is
Divided into a plurality of cutter parts each including the base body and the cutting blade,
At least two of the plurality of cutter parts are respectively
An identification space having at least one of dimensions and positions different from each other is formed,
A cutter for skiving, which is characterized. The identification voids respectively formed in at least two of the plurality of cutter parts,
In the state where the plurality of cutter parts are stacked in phase with each other,
It is configured to exhibit a predetermined shape across the plurality of cutter parts,
The skiving cutter according to claim 1. A correctness determination pin that is inserted into the identification gap over at least two of the cutter parts;
The correctness determination pin is configured in a shape that follows the predetermined shape of the identification gap,
The skiving cutter according to claim 2. The correctness determination pin is
Inserted in the identification gap formed in the plurality of cutter parts,
At least one of two or more positioning elements for positioning the plurality of cutter parts relative to each other in phase;
The skiving cutter according to claim 3. Over at least two of the cutter parts, the identification gap is
A cross-sectional area is gradually reduced from one end in the axial direction of the skiving cutter to the other end,
The skiving cutter according to any one of claims 2 to 4. Over at least two of the cutter parts, the identification gap is
It is configured to be continuous in a direction inclined with respect to the axial direction of the skiving cutter.
The skiving cutter according to any one of claims 2 to 5. The identification void is
A key groove into which a key provided in a support that supports the skiving cutter is inserted.
The skiving cutter according to claim 2. The keyway is
The skiving cutter is formed so as to gradually move away from the axial center from one end to the other end in the axial direction of the skiving cutter, and the size of the skiving cutter in the radial direction changes.
The skiving cutter according to claim 7. The plurality of cutter components adjacent to each other in the axial direction,
Including at least two of the cutter parts that are stacked by engagement of the convex portion and the concave portion,
One of the adjacent cutter components includes the convex portion,
The other of the adjacent cutter components includes the recess into which the protrusion is inserted,
The skiving cutter according to any one of claims 1 to 8. A skiving cutter according to any one of claims 1 to 9,
And a rotary shaft device that transmits a rotary driving force to the skiving cutter.
A skiving device characterized in that

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