KR102617744B1 - Gear tooth cutting device - Google Patents

Abstract

A gear tooth processing device is disclosed. A gear tooth processing device according to an embodiment of the present invention includes an arbor on one side of which is connected to the spindle head of a machine tool and generates rotational movement through the spindle head when the machine tool operates; A gear assembly connected to the arbor and the output power shaft, but changing the direction of the arbor's rotational movement and transmitting it to the output power shaft; and is detachably coupled to the output power shaft in the side area of the gear assembly, and changes the teeth on the inner or outer surface of the gear body based on the rotational motion transmitted through the spindle head and the gear assembly. Includes side tooth cutter for machining.

Description

Gear tooth cutting device}

The present invention relates to a gear tooth shape processing device, and more specifically, it can increase the processing speed according to the gear tooth shape than before, which can contribute to improved productivity, and can also precisely process materials with high hardness. It relates to a gear tooth processing device that can improve the quality of products.

Gear refers to a device that transmits rotation or power between two or more axles. The original meaning of gear is a general term for transmission devices that use gears.

The simplest way to transmit rotation or power to multiple axes is to attach disks to two axes and bring them into contact with each other. However, even in this case, if the number of rotations is increased or the contact pressure is low, slippage occurs and the transmission is not carried out. Therefore, if protrusions are made at equal intervals around both wheels so that each one engages with each other, slippage does not occur even as the rotation speed increases. To this end, gear teeth are machined on the sides.

Gear tooth processing at this time refers to the work of cutting the teeth of a gear using a milling machine, shaper, etc. using a predetermined cutter. In other words, it is common to cut the teeth one by one to a specified depth. For reference, there are two types of gear tooth shapes: a cycloid tooth shape using a cycloid curve, and an involute tooth shape using an involute curve, which is the trajectory drawn by the end of a thread wound in a circle when untightened.

In order to process gear teeth of any shape, a suitable device, that is, a gear tooth processing device, is required. The representative device currently mainly used is a method of scraping a bite formed with one blade against the surface of the gear body.

Even if a structure that performs this method is applied, gear teeth can be processed, but in the case of this conventional technology, the processing speed is slow due to the method or structural limitations of scraping the surface of the gear body, and of course, productivity is reduced. Since it is difficult to precisely process materials with high structural hardness, a new concept of gear tooth processing equipment is required to solve this problem.

Korea Intellectual Property Office Application No. 10-2015-7023670

Therefore, the technical problem that the present invention aims to achieve is that the processing speed according to the gear tooth shape can be increased compared to the conventional method, which can contribute to improved productivity, and can also improve the quality of products by enabling precise processing even of materials with high hardness. The purpose is to provide a gear tooth processing device that can do this.

According to one aspect of the present invention, an arbor on one side of which is connected to the spindle head of a machine tool and generates rotational movement through the spindle head when the machine tool operates; A gear assembly connected to the arbor and the output power shaft and changing the direction of rotation of the arbor to transmit the rotational movement to the output power shaft; and detachably coupled to the output power shaft in a side area of the gear assembly, and forming a tooth shape on the inner or outer surface of the gear body based on the rotational motion transmitted through the spindle head and the gear assembly. A gear tooth processing device may be provided, characterized in that it includes a side tooth cutter for processing a tooth.

The side tooth cutter includes a cutter holder in which a coupling portion coupled to the output power shaft is formed at the center and a plurality of cutter fingers are formed on the outer periphery; and an insert tip that is detachably coupled to the cutter finger and substantially processes the tooth shape of the gear body.

The insert tip may be encircled further outward than the end of the cutter finger and may include a tip portion for processing the tooth shape of the gear body, and may be replaceably attached to the end area of the cutter finger with a screw.

The cutter fingers may be arranged radially at equal intervals around the coupling portion, and a key groove for key engagement may be formed in the coupling portion.

The gear assembly includes a first bevel gear connected to an arbor rotation axis forming one end of the arbor and rotating co-rotating with the arbor rotation axis; a second bevel gear that is tooth-meshed with the first bevel gear and changes the direction of rotation of the first bevel gear; And it is connected to the second bevel gear and the output power shaft, and may include a multi-stage helical gear unit that transmits the rotational movement of the second bevel gear to the rotational movement of the output power shaft.

The helical gear unit includes a first helical gear coaxially connected to the second bevel gear; a second helical gear coaxially connected to the output power shaft; And it may include a third helical gear between the first helical gear and the second helical gear, tooth meshing with the first helical gear and the second helical gear, wherein the first to third helical gears are aligned in the longitudinal direction. An array structure can be formed.

The gear assembly is disposed on at least one side of the arbor rotation axis, the first bevel gear, the first helical gear, the second bevel gear, the second helical gear, and the output power shaft and doubles the rotational motion. It may further include two angular ball bearings.

The gear assembly includes: a bearing preload portion disposed around the angular ball bearing and applying a preload to the angular ball bearing; And it is disposed around the first bevel gear and the second bevel gear, and may further include a bevel gap adjusting unit that adjusts the gap between the first bevel gear and the second bevel gear.

The gear assembly includes: a needle bearing coupled to an end of the arbor rotation shaft and doubling the rotational movement of the arbor rotation shaft; a bearing gap adjustment unit connected to the angular ball bearings and adjusting the gap between the angular ball bearings; And it is connected to the output power shaft, and may further include a cutter spacing adjustment unit that adjusts the spacing of the side tooth cutters.

An origin fixing plate connected to the arbor to fix the origin of the arbor or the side tooth cutter according to tooth processing, and having a plurality of origin fixing grooves formed at equal intervals on the circumferential surface; an origin fixing housing disposed around the origin fixing plate and rotatable relative to the origin fixing plate; And it may further include a latch unit connected to the origin fixing housing and having an origin fixing latch coupled to a selected location among the origin fixing grooves of the origin fixing plate.

It is connected to the latch unit and the origin fixing housing, and may further include an elastic member that elastically supports the latch unit with respect to the origin fixing housing.

The elastic member may be a torsional compression coil spring that elastically biases the latch unit in a direction in which the origin fixing latch is inserted into the origin fixing groove of the origin fixing plate.

It may further include a cover plate that couples the latch unit to the origin fixing housing to prevent the elastic member from moving out of position.

It may further include an anti-rotation pin connected to one side of the origin fixing housing, the upper end of which is disposed to protrude more than the origin fixing latch.

It may further include an anti-rotation block that is detachably coupled to the anti-rotation pin and contacts a side of the spindle head to prevent rotation of the origin fixing housing.

A linear bush may be connected to the anti-rotation pin.

a head body coupled to one side of the arbor; a body cover disposed adjacent to the head body and covering the gear assembly; And it may further include an oil seal cover disposed around the body cover.

According to the present invention, the processing speed according to the gear tooth shape can be increased compared to the prior art, which can contribute to improved productivity, and even materials with high hardness can be processed precisely, thereby improving the quality of products.

Figure 1 is a partially cut away perspective view of a gear tooth processing device according to an embodiment of the present invention.
Figure 2 is a perspective view of the gear tooth processing device according to an embodiment of the present invention with the rotation prevention block in Figure 1 removed.
Figures 3 to 5 are views showing Figure 2 from different angles.
Figure 6 is a rear perspective view of the gear tooth processing device according to an embodiment of the present invention, with the side tooth cutter removed.
Figure 7 is a perspective view of a side tooth cutter.
Figure 8 is an enlarged view of area A of Figure 7.
Figure 9 is a front view of the side tooth cutter of Figure 8.
Figure 10 is a diagram for explaining the origin fixing plate and the origin fixing latch.
Figure 11 is a diagram for explaining a state connected to the rotation prevention block in Figure 10.
Figure 12 is a partial cross-sectional view of Figure 1.
Figures 13 and 14 are partial cross-sectional views of a gear tooth processing device according to an embodiment of the present invention for explaining the operation of the rotation prevention block.
15 and 16 are diagrams for explaining the operation of the gear assembly and the side tooth cutter.
17 and 18 are diagrams illustrating the use of a gear tooth processing device according to an embodiment of the present invention.

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member.

Figure 1 is a partially cut away perspective view of a gear tooth processing device according to an embodiment of the present invention, and Figure 2 is a perspective view of a gear tooth processing device according to an embodiment of the present invention with the rotation prevention block in Figure 1 removed, FIGS. 3 to 5 are views showing FIG. 2 from different angles, FIG. 6 is a rear perspective view of a gear tooth processing device according to an embodiment of the present invention with the side tooth cutter removed, and FIG. 7 is a side tooth cutter. is a perspective view, Figure 8 is an enlarged view of area A of Figure 7, Figure 9 is a front view of the side tooth cutter of Figure 8, Figure 10 is a diagram for explaining the origin fixing plate and origin fixing latch, and Figure 11 is a diagram for explaining the state connected to the rotation prevention block in FIG. 10, FIG. 12 is a partial cross-sectional view of FIG. 1, and FIGS. 13 and 14 are diagrams for explaining the operation of the rotation prevention block in an embodiment of the present invention. It is a partial cross-sectional view of the gear tooth processing device according to the present invention, Figures 15 and 16 are drawings for explaining the operation of the gear assembly and the side tooth cutter, and Figures 17 and 18 are diagrams of the gear tooth processing device according to an embodiment of the present invention. This is an example of use.

Referring to these drawings, the gear tooth shape processing device 100 according to the present embodiment can increase the processing speed according to the gear tooth shape compared to the prior art, contributing to improved productivity, as well as precisely processing even materials with high hardness. This can help improve product quality.

The gear tooth processing device 100 according to the present embodiment, which can provide this effect, may have the same structure as Figure 1, and the gear assembly 150 and the side tooth cutter 130 are connected to the arbor 110. It has a shape.

The arbor 110 is a structure whose one side is connected to the spindle head 10 of a machine tool, as shown in FIGS. 13 and 14. When the machine tool operates to process the tooth shape of the gear, the spindle head 10 rotates. At this time, the arbor 110 connected to the spindle head 10 also rotates and generates rotational motion.

One side of the arbor 110 connected to the spindle head 10 has a conical shape whose cross-sectional area gradually decreases toward the end. And, the other side of the arbor 110 forms the arbor rotation axis 111. Some components of the gear assembly 150 are connected to the arbor rotation axis 111.

A head body 114 is coupled to one side of the arbor 110. Additionally, a body cover 115 is disposed around the head body 114. The body cover 115 is disposed adjacent to the head body 114 and serves to cover the gear assembly 150. An oil seal cover 116 is provided at the lower peripheral portion of the body cover 115.

The gear assembly 150 is connected to the arbor 110 and the output power shaft 120, and is a means for changing the direction of rotation of the arbor 110 and transmitting it to the output power shaft 120. As will be described later, gears of various shapes, types, and structures are connected to each other to form one gear assembly 150.

In this embodiment, the gear assembly 150 includes a combination of bevel gears 151 and 152 and helical gears 161 to 163. Of course, gears other than the bevel gears 151 and 152 and helical gears 161 to 163 may be added, or other means may be used instead of the bevel gears 151 and 152 and helical gears 161 to 163. However, when the gear assembly 150 is implemented through the bevel gears 151 and 152 and the helical gears 161 to 163 as in this embodiment, there is an advantage that a compact structure is possible and efficiency can be improved.

Bevel gears 151 and 152 include first and second bevel gears 151 and 152. The first bevel gear 151 is connected to the arbor rotation shaft 111 forming one end of the arbor 110 and rotates simultaneously with the arbor rotation shaft 111.

In addition, the second bevel gear 152 is tooth-meshed with the first bevel gear 151 and serves to vary the direction of rotation of the first bevel gear 151. That is, as shown by the arrow in FIG. 18, the arbor 110 and the first bevel gear 151 rotate coaxially, but the second bevel gear 152 rotates in a direction intersecting the first bevel gear 151. The kinetic force is transmitted to the hell helical gear unit 160.

The helical gear unit 160 is connected to the second bevel gear 152 and the output power shaft 120, and serves to transmit the rotational movement of the second bevel gear 152 to the rotational movement of the output power shaft 120. do. In this embodiment, the helical gear unit 160 is applied as a multi-stage structure, for example, a three-stage helical gear unit 160.

That is, the three-stage helical gear unit 160 applied to this embodiment is coaxially connected to the first helical gear 161 coaxially connected to the second bevel gear 152 and the output power shaft 120. The second helical gear 162 is connected, and the third helical gear is in tooth meshing with the first helical gear 161 and the second helical gear 162 between the first helical gear 161 and the second helical gear 162. Includes gear 163.

In this way, the gear tooth processing device 100 according to the present embodiment uses a three-stage helical gear unit 160, that is, because the first to third helical gears 161 to 163 are arranged in the longitudinal direction and act. , the equipment can be manufactured thin and slender, making it possible to process thin materials.

In particular, as shown in FIGS. 17 and 18, tooth processing on the inner or outer surface of the gear bodies 30a and 30b, which are objects of processing, is possible even when the gear bodies 30a and 30b are mounted on the index table 50.

To explain this in more detail, in the past, the teeth of the gear were completely processed separately and then the completed gear was assembled on the index table 50, but the gear tooth shape processing device 100 according to the present embodiment is compact. Because it has a yet efficient structure, tooth processing of the inner or outer surface of the gear body (30a, 30b) can be performed even when the gear body (30a, 30b), which is the processing object, is mounted on the index table (50) as shown in Figures 17 and 18. It can be done. Therefore, workability can be significantly improved compared to before.

In order for the rotational movement of the arbor 110 to be well transmitted to the output power shaft 120 through the first and second bevel gears 151 and 152 and the helical gear unit 160, the gear assembly 150 includes a plurality of angular ball bearings ( 153) is provided.

The angular ball bearings 153 include the arbor rotation shaft 111, the first bevel gear 151, the first helical gear 161, the second bevel gear 152, and the second helical gear 162, as well shown in FIG. 12. ) and is placed on at least one side of the output power shaft 120 and serves to double the rotational movement.

In addition, the gear assembly 150 applied to the gear tooth processing device 100 according to this embodiment includes a bearing preload unit 154, a bevel gap adjustment unit 155, a needle bearing 156, a bearing gap adjustment unit 157, and The configuration and structure of the cutter spacing adjustment unit 158, etc. are mounted at each location.

The bearing preload portion 154 is disposed around the angular ball bearing 153 and serves to apply a preload to the angular ball bearing 153.

Here, preload refers to spacing adjustment used when installing bearings. Normal bearing preload is selected and used to have a slight clearance in operating conditions, but in order to achieve various effects depending on the application, there are cases where a negative gap is given when the bearing is installed to generate intended internal stress. It can be selected and used appropriately.

The bevel gap adjusting unit 155 is disposed around the first bevel gear 151 and the second bevel gear 152, and serves to adjust the gap between the first bevel gear 151 and the second bevel gear 152. do.

The needle bearing 156 is coupled to the end of the arbor rotation shaft 111 and serves to double the rotational movement of the arbor rotation shaft 111. It can be more effective than ball bearings.

The bearing spacing adjusting unit 157 is connected to the angular ball bearings 153 and serves to adjust the spacing between the angular ball bearings 153.

In addition, the cutter spacing adjusting unit 158 is connected to the output power shaft 120 and serves to adjust the spacing of the side tooth cutters 130.

Except for the needle bearing 156, the bearing preload unit 154, bevel gap adjustment unit 155, bearing gap adjustment unit 157, and cutter gap adjustment unit 158 can be applied as thin plates in the form of spacers. By setting in advance, precision processing can be possible.

Meanwhile, the side tooth cutter 130 is detachably coupled to the output power shaft 120 in the side area of the gear assembly 150, and rotates transmitted through the spindle head 10 and the gear assembly 150. It serves to process the teeth of the inner or outer surface of the gear body (30a, 30b) based on the movement.

17 and 18, the side tooth cutter 130 rotates using the rotational movement provided by the arbor 110 by the action of the gear assembly 150 to cut the inner or outer surface of the gear bodies 30a and 30b. Teeth can be precisely processed.

This side tooth cutter 130 includes a cutter holder 131 in which a coupling portion 132 coupled to the output power shaft 120 is formed at the center and a plurality of cutter fingers 134 are formed around the outer periphery, and cutter fingers ( 134) and includes an insert tip 140 that substantially processes the teeth of the gear bodies 30a and 30b.

The cutter fingers 134 are arranged radially at equal intervals around the coupling portion 132. In the case of this embodiment, six cutter fingers 134 are applied, but the scope of the present invention is not limited to the number. A key groove 133 for key coupling is formed in the coupling portion 132.

The insert tip 140 includes a tip portion 141 that is more rounded outward than the end of the cutter finger 134 and processes the teeth of the gear bodies 30a and 30b. The tip blade portion 141 may be made of diamond material with excellent hardness. In this embodiment, the tip blade portion 141 is manufactured in a gear tooth shape so that the gear tooth shape can be processed.

And, this insert tip 140 is removably coupled to the end area of the cutter finger 134 using a screw 143. In this way, when the insert tip 140 is installed and used at the end area of the plurality of cutter fingers 134, only the damaged or worn insert tip 140 needs to be replaced and used, thus reducing the cost associated with replacing the entire cutter as before. The occurrence of loss can be eliminated.

Additionally, since the insert tip 140 can be easily replaced, replacement time can be significantly reduced, thereby contributing to improved productivity.

Meanwhile, in addition to the configuration described above, the gear tooth processing device 100 according to the present embodiment includes means for fixing the origin of the arbor 110 or the side tooth cutter 130 according to tooth processing, that is, an origin fixing plate 171, The configuration and structure of the origin fixing housing 172 and the latch unit 173 are further provided. That is, when mounting the gear tooth shape processing device 100 on the spindle head 10 while aligning the origin through initial setting, the origin must not be disturbed. For this purpose, the gear tooth shape processing apparatus 100 according to the present embodiment is equipped with the configuration and structure of the origin fixing plate 171, the origin fixing housing 172, and the latch unit 173.

The origin fixing plate 171 is a disk-shaped structure provided to be connected to the arbor 110 to fix the origin of the arbor 110 or the side tooth cutter 130 according to tooth processing. A plurality of origin fixing grooves 171a are formed at equal intervals on the peripheral surface of the origin fixing plate 171.

The origin fixing housing 172 is a structure disposed around the origin fixing plate 171 and is rotatable relative to the origin fixing plate 171. A rotation prevention pin 181, which will be described later, is connected to the origin fixing housing 172.

The latch unit 173 is connected to the origin fixing housing 172 and includes an origin fixing latch 173a coupled to a selected location among the origin fixing grooves 171a of the origin fixing plate 171.

An elastic member 174 is further applied to function as the origin fixing latch 173a. The elastic member 174 is connected to the latch unit 173 and the origin fixing housing 172, and serves to elastically support the latch unit 173 with respect to the origin fixing housing 172.

In this embodiment, the elastic member 174 is a torsional compression coil spring 174 that elastically biases the latch unit 173 in the direction in which the origin fixing latch 173a is inserted into the origin fixing groove 171a of the origin fixing plate 171. ) is applied. For stable operation, a plurality of torsion compression coil springs 174 may be applied.

In addition, a cover plate 175 that couples the latch unit 173 to the origin fixing housing 172 is further provided to prevent the elastic member 174 as the torsion compression coil spring 174 from being moved out of position. For installation or maintenance of the elastic member 174, the cover plate 175 is detachably assembled with screws at the corresponding position.

Also, a rotation prevention pin 181 is disposed on one side of the origin fixing housing 172 so that its upper end protrudes more than the origin fixing latch 173a. The linear bushing (183) is connected to the anti-rotation pin (181). The linear bushing 183 is connected to the latch unit 173.

An anti-rotation block 182 is further connected to the anti-rotation pin 181, as shown in FIG. 14, in contact with the side of the spindle head 10 to prevent rotation of the origin fixing housing 172. In this embodiment, the rotation prevention block 182 is a plate-shaped structure, and when the arbor 110 is coupled to the spindle head 10, it is supported in contact with the external structure of the spindle head 10.

For reference, when the arbor 110 is coupled to the spindle head 10, the rotation means (not shown) in the spindle head 10 is connected to the arbor 110, so that the arbor 110 rotates, so substantially, as shown in FIGS. 13 and 13 . The structure of the spindle head 10 shown in hatching at 14 does not rotate.

The operation of the rotation prevention block 182 will be explained in more detail. After setting the origin of the gear tooth processing device 100 of this embodiment, when the arbor 110 is coupled to the spindle head 10 as shown in FIGS. 13 to 14, the anti-rotation block 182 is attached to the spindle head 10. It is supported and pressurized. When the anti-rotation block 182 is pressed in this way, the linear bush 183 pushes and presses the latch unit 173, so the anti-rotation pin 181 is pressed downward due to this action, and this causes the elastic member 174 As it is compressed, the origin fixing latch 173a of the latch unit 173 falls out of the origin fixing groove 171a of the origin fixing plate 171. In this state, the rotational force of the arbor 110 moves the helical gear unit 160. By rotating the side tooth cutter 130, tooth processing on the inner or outer surface of the gear bodies 30a and 30b can be performed.

In other words, the anti-rotation block 182 and its associated components, that is, the anti-rotation pin 181, the linear bush 183, the origin fixing latch 173a of the latch unit 173, and the origin fixation of the fixing plate 171. Configurations such as grooves 171a are used to couple to the spindle head 10 while preventing the set origin of the gear tooth shape processing device 100 of the present embodiment from being disturbed, and do not work when machining the actual tooth shape. .

Accordingly, after assembling the parts to manufacture the gear tooth processing device 100, connecting it to the spindle head 10 and operating the machine tool can perform tooth processing on the inner or outer surface of the gear bodies 30a and 30b. In particular, as described above, since the gear tooth processing device 100 according to the present embodiment is applied with a three-stage helical gear unit 160 in the longitudinal direction, the equipment can be manufactured thin and slim, so that the gear tooth processing device 100 according to the present embodiment is applied. Likewise, even when the gear bodies 30a and 30b, which are objects of processing, are mounted on the index table 50, tooth processing on the inner or outer surfaces of the gear bodies 30a and 30b can be performed. Therefore, workability can be significantly improved compared to before.

According to this embodiment, which operates with the structure described above, the processing speed according to the gear tooth shape can be increased compared to the conventional method, which can contribute to improved productivity, and even materials with high hardness can be precisely processed to produce products. quality can be improved.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations fall within the scope of the claims of the present invention.

10: Spindle head 30a, 30b: Gear body
50: Index table 100: Gear tooth processing device
110: arbor 111: arbor rotation axis
114: head body 115: body cover
116: Oil seal cover 120: Output power shaft
130: Side tooth cutter 131: Cutter holder
132: Coupler 133: Keyway
134: cutter finger 140: insert tip
141: tip blade 143: screw
150: gear assembly 151: first bevel gear
152: second bevel gear 153: angular ball bearing
154: Bearing preload unit 155: Bevel gap adjustment unit
156: Needle bearing 157: Bearing gap adjustment unit
158: cutter gap adjustment unit 160: helical gear unit
161: first helical gear 162: second helical gear
163: Third helical gear 171: Origin fixing plate
171a: Origin fixing groove 172: Origin fixing housing
173: Latch unit 173a: Origin fixing latch
174: elastic member 175: cover plate
181: Anti-rotation pin 182: Anti-rotation block
183: Linear Bush

Claims (17)

An arbor connected on one side to the spindle head of a machine tool and generating rotational movement through the spindle head when the machine tool operates;
A gear assembly connected to the arbor and the output power shaft and changing the direction of rotation of the arbor and transmitting it to the output power shaft;
It is detachably coupled to the output power shaft in a side area of the gear assembly, and is formed on the inner or outer surface of the gear body based on the rotational movement transmitted through the spindle head and the gear assembly ( side tooth cutter for processing teeth;
An origin fixing plate connected to the arbor to fix the origin of the arbor or the side tooth cutter according to tooth processing, and having a plurality of origin fixing grooves formed at equal intervals on the circumferential surface;
an origin fixing housing disposed around the origin fixing plate and rotatable relative to the origin fixing plate; and
It is connected to the origin fixing housing and includes a latch unit including an origin fixing latch that engages a selected location among the origin fixing grooves of the origin fixing plate,
The side tooth cutter,
a cutter holder in which a coupling portion coupled to the output power shaft is formed at the center and a plurality of cutter fingers are formed around the outer periphery; and
An insert tip is removably coupled to the end area of the cutter finger with a screw and has a tip portion that processes the tooth shape of the gear body and is rounded outward more than the end of the cutter finger to process the tooth shape of the gear body. A gear tooth processing device comprising: delete delete According to paragraph 1,
The cutter fingers are arranged radially at equal intervals around the coupling portion,
A gear tooth processing device, characterized in that a key groove for key coupling is formed in the coupling portion. According to paragraph 1,
The gear assembly is,
A first bevel gear connected to the arbor rotation axis forming one end of the arbor and rotating co-rotating with the arbor rotation axis;
a second bevel gear that is tooth-meshed with the first bevel gear and changes the direction of rotation of the first bevel gear; and
A gear tooth shape processing device comprising a multi-stage helical gear unit connected to the second bevel gear and the output power shaft and transmitting the rotational movement of the second bevel gear to the rotational movement of the output power shaft. According to clause 5,
The helical gear unit is,
a first helical gear coaxially connected to the second bevel gear;
a second helical gear coaxially connected to the output power shaft; and
Between the first helical gear and the second helical gear, it includes a third helical gear in tooth meshing with the first helical gear and the second helical gear,
A gear tooth processing device, characterized in that the first to third helical gears form a longitudinal arrangement structure. According to clause 6,
The gear assembly is,
A plurality of angular ball bearings disposed on at least one side of the arbor rotation shaft, the first bevel gear, the first helical gear, the second bevel gear, the second helical gear, and the output power shaft and doubling the rotational movement. A gear tooth processing device further comprising: In clause 7,
The gear assembly is,
a bearing preload portion disposed around the angular ball bearing and applying a preload to the angular ball bearing; and
A gear tooth processing device disposed around the first bevel gear and the second bevel gear, and further comprising a bevel gap adjustment unit that adjusts the gap between the first bevel gear and the second bevel gear. In clause 7,
The gear assembly is,
a needle bearing coupled to an end of the arbor rotation shaft and doubling the rotational movement of the arbor rotation shaft;
a bearing gap adjustment unit connected to the angular ball bearings and adjusting the gap between the angular ball bearings; and
A gear tooth processing device connected to the output power shaft and further comprising a cutter spacing adjustment unit that adjusts the spacing of the side tooth cutters. delete According to paragraph 1,
A gear tooth processing device further comprising an elastic member connected to the latch unit and the origin fixing housing and elastically supporting the latch unit with respect to the origin fixing housing. According to clause 11,
The elastic member is a torsional compression coil spring that elastically biases the latch unit in a direction in which the origin fixing latch is inserted into the origin fixing groove of the origin fixing plate. According to clause 11,
Gear tooth processing device further comprising a cover plate that couples the latch unit to the origin fixing housing to prevent the elastic member from moving out of position. According to paragraph 1,
A gear tooth processing device further comprising an anti-rotation pin connected to one side of the origin fixing housing and having an upper end protruding more than the origin fixing latch. According to clause 14,
A gear tooth processing device further comprising an anti-rotation block that is detachably coupled to the anti-rotation pin and contacts a side of the spindle head to prevent rotation of the origin fixing housing. According to clause 14,
Gear tooth processing device, characterized in that a linear bush is connected to the anti-rotation pin. According to paragraph 1,
a head body coupled to one side of the arbor;
a body cover disposed adjacent to the head body and covering the gear assembly; and
A gear tooth processing device further comprising an oil seal cover disposed around the body cover.

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