JPH0929544A - Gear grinding machine, and work charging method therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the work charging without using a robot mechanism in which complicated actions are required. SOLUTION: A work W is ground in the condition where a toothed part Wa is engaged with a grinding wheel 29 while they are rotated in a synchronous manner. A work rotating and supporting mechanism 25 to support the work W is rotatable in the direction A through a rotary table 35 by a rotary body 41 to be driven to a column 39, and the work W is held in the inclined condition by the prescribed angle to the vertical direction. A work carrying mechanism 63 is provided on the side opposite to the work rotating and supporting mechanism 25 of the column 39, and a work charging space in which the work carrying mechanism 63 slides to carry the work W to the work rotating and supporting mechanism 25 is formed in the column 39 between the work carrying mechanism 63 and the work rotating and supporting mechanism 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grindstone rotatably supported by a rotary shaft arranged in a horizontal direction, and by the rotation of the grindstone, a workpiece in mesh with the grindstone while rotating in synchronization with this rotation. The present invention relates to a gear grinding machine that grinds tooth portions of a tooth and a method for loading a work of the gear grinding machine.

[0002]

2. Description of the Related Art As a gear grinding machine for grinding a tooth portion of a workpiece in mesh with a grindstone in a rotating state, there is, for example, one disclosed in Japanese Patent Laid-Open No. 5-208314. FIG. 8 is a front view showing an example of a gear grinding machine, in which a work W is rotatably supported by a work rotation support mechanism 1 having a rotation center shaft extending in the vertical direction in the drawing. On the other hand, the grindstone 3 is supported by a grindstone rotation support mechanism 7 so as to be rotatable about a rotation center axis 5 extending in a direction orthogonal to the paper surface in the figure.

Work rotation supporting mechanism 1 for supporting the work W
Is fixed to the turntable 9, and the turntable 9 is a base 11
The column 13 fixed to the upper side is fixed to a rotating body 15 which is rotatable around the rotation center axis in the left-right direction in the drawing.
The rotating body 15 is rotated by the motor 17 mounted on the column 13 together with the turntable 9 and the work rotation support mechanism 1, and the rotation allows the work W to be inclined at a predetermined angle with respect to the vertical direction.

On the other hand, the grindstone rotation supporting mechanism 7 for supporting the grindstone 3 is fixed on a support base 19, which is movable along the lateral guides 21 in the left-right direction in the drawing, and also in the front-back direction. It can be moved along the direction guide 23 in a direction orthogonal to the paper surface in the drawing.

FIG. 9 is a plan view showing a state in which the tooth portion of the work W is ground by the grindstone 3. The grindstone 3 has a rack shape so that it can mesh with the tooth portion of the work W, and the grindstone The teeth are ground while the work W also rotates in synchronization with the rotation of 3. In FIG. 8, the rotation center axis of the work rotation support mechanism 1 is set in the vertical direction, and the work W to be ground in this state is a spur gear. On the other hand, when the rotating body 15 is rotated by the drive of the motor 17 and the entire work rotation support mechanism 1 is rotated to incline the work W in the front-back direction with respect to the vertical direction in FIG. The work W is a helical gear whose teeth are inclined with respect to the rotation center axis of the work rotation support mechanism 1.

[0006]

By the way, when the work W is loaded and set in the gear grinding machine as described above, the operator is at the front side (front side of the drawing in FIG. 8) or the rear side of the gear grinding machine. Although it is performed manually from the side, particularly in the grinding process for the helical gear that is performed by inclining the work rotation support mechanism 1, it is difficult to input the work especially when the weight of the work W is large. The burden on the person was heavy. Further, it may be possible to automate the above-mentioned loading work by a robot, but in this case, a robot hand mechanism that requires a complicated operation is required, and to achieve this, a significant cost increase will be incurred.

Before the work W is machined, it is necessary to perform phase indexing (phase matching) of the teeth of the work W in order to mesh the teeth of the work W with the grindstone 3. The position of the tooth is detected by providing a proximity switch or the like so as to move toward and away from the work W fixed to the work rotation support mechanism 1. However,
In this case, it is difficult to make a space for movably providing the proximity switch, and the provision of the proximity switch inevitably increases the size of the entire gear grinding machine. The above-mentioned phase adjustment can be performed manually by an operator, but in this case, skill is required and it is extremely difficult work for an inexperienced operator.

In view of the above, the present invention automates the work input without using a robot mechanism that requires a complicated operation, and the phase alignment of the tooth portion of the work with the grindstone does not cause an increase in the size of the gear grinding machine. The purpose is to be able to implement.

[0009]

In order to achieve the above-mentioned object, according to the present invention, firstly, a grindstone is supported by a rotating shaft arranged in a horizontal direction, and the rotation of the grindstone causes synchronization with this rotation. In a gear grinding machine that grinds the tooth portion of a workpiece that meshes with a grindstone while rotating, a rotary support mechanism that rotatably supports the work is rotated in a horizontal direction orthogonal to the rotation axis of the grindstone. The shaft is rotatable about a shaft, and the shaft is formed into a cylindrical shape. Inside the cylinder, there is provided a work input space that communicates between the work fixing portion side of the rotation support mechanism and the outside on the opposite side. A work transfer mechanism capable of holding a work and transferring the work to the work fixing portion in the work input space is provided on the outside of the input space.

Secondly, in the first construction, the work transfer mechanism has a housing which is slidable in a direction of approaching and separating from the work fixing portion, and the rotation of the work holding mechanism holds the work. It is configured to have a work holding portion that can rotate on the same central axis as the shaft portion.

Thirdly, in the second construction, the work holding part has a drive gear part that meshes with the teeth of the held work to rotate the work, while the drive gear part is provided on the inner wall of the work input space. Is provided with a phase detector that detects the phase of the tooth portion of the rotating workpiece.

Fourthly, a grindstone is rotatably supported on a rotary shaft arranged in the horizontal direction, and the rotation of the grindstone causes the tooth portion of the workpiece in mesh with the grindstone to rotate in synchronization with this rotation. In the work loading method of the gear grinding machine for grinding, the rotation support mechanism for rotatably supporting the work is rotatable about a rotation shaft portion arranged in a horizontal direction in a direction orthogonal to the rotation axis of the grindstone. The rotating shaft portion is formed into a cylindrical shape, and inside the cylinder, there is provided a work loading space that communicates between the work fixing portion side of the rotation support mechanism and the outside on the opposite side, and from the outside of the work feeding space, the work transfer mechanism According to the method, a work loading method is performed in which the work is held while being moved in the work loading space and conveyed to the work fixing portion to load the work.

According to the first configuration or the fourth method described above, the work transfer mechanism linearly moves in the work input space while holding the work, and thereby the work is fixed to the work fixing portion of the rotation support mechanism. Even if the entire rotation support mechanism is rotated together with the work and the work is tilted with respect to the vertical direction, the work can be held with the work transfer mechanism adjusted to the tilt. The configuration eliminates the need for a robot mechanism that requires complicated operations.

According to the second configuration, the work transfer mechanism is
By linearly moving in the work loading space while holding the work, the work can be loaded into the work fixing part of the rotation support mechanism, and the whole rotation support mechanism is rotated together with the work to tilt the work with respect to the vertical direction. Even if the workpiece is machined, the work transfer mechanism can rotate the work holding part with respect to the housing and hold the work in a state of being aligned with the inclination of the rotation support mechanism. Is unnecessary.

According to the third structure, the work transfer mechanism is moved to the phase detector in the work input space, and the drive gear portion is driven to rotate the work while the phase detector detects the tooth portion of the work. Is detected, and the phase at the time of meshing with the grindstone is matched based on the detection data. Since this detection operation can be performed by the phase detector fixed in the work input space while the work transfer mechanism is in the work input space, it is possible to avoid an increase in size of the gear grinding machine due to the provision of the phase detector.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a gear grinding machine showing an embodiment of the present invention. The work W is rotatably supported by a work rotation support mechanism 25 having a rotation center shaft 24 extending in the vertical (Z) direction in the gear grinding machine. The work W is composed of a tooth portion W _a to be ground and a shaft portion W _b provided on both upper and lower sides at the center portion of the tooth portion W _a , and the rotation support mechanism 25 has an upper side of the shaft portion W _b . Is held and fixed by the collet chuck 26, and the lower end portion of the shaft portion W _b is supported by the tail stock 27 that constitutes the work fixing portion together with the collet chuck 26. On the other hand, the grindstone 29 is
Rotation center axis 3 extending in the front-back (Y) direction of the gear grinding machine
It is supported by the grindstone rotation supporting mechanism 33 so as to be rotatable around 1.

Work rotation support mechanism 2 for supporting the work W
5 is mounted on a side surface of a turntable 35 so as to be movable up and down. The turntable 35 is fixed to a rotating body 41 rotatable in the direction A in the figure with respect to a column 39 fixed on a base 37. There is. By rotating the rotating body 41 in the A direction, the work W can be tilted at a predetermined angle with respect to the vertical direction. On the other hand, a grindstone rotation support mechanism 33 that supports the grindstone 29.
Is fixed on the support base 43, the support base 43 is movable in the X direction in the drawing along the left-right direction guide 45, and the left-right direction guide 45 is moved along the front-back direction guide 47.
Together with this, it can move in the Y direction in the figure.

Similar to the grindstone 29 shown in FIG. 9, the grindstone 29 has a rack shape so that it can be meshed with the tooth portion W _a of the work W, and the work W rotates while synchronizing with the rotation of the grindstone 29. The tooth portion W _a is ground. In FIG. 1, the rotation center shaft 24 of the work rotation support mechanism 25 is set in the vertical direction, and the work W ground in this state is a spur gear. On the other hand, when the work rotation support mechanism 25 as a whole is rotated by the rotation of the rotating body 41 and the work W is tilted in the front-rear direction of the gear grinder with respect to the vertical direction, the grindstone 29
The work W ground by the work is supported by the work rotation support mechanism 25.
The helical gear is formed by sloping the tooth portion W _a with respect to the rotation center axis 24.

FIG. 2 is a sectional view of a portion on the right side of the work rotation support mechanism 25 excluding the grindstone rotation support mechanism 33 in the gear grinding machine shown in FIG. The column 39 includes a column main body 49 fixed to the base 37, and a cylindrical body 53 as a rotary shaft portion rotatable with respect to the column main body 49 via a bearing 51. The cylindrical body 53 is a rotating body 41. It is fixed to. An annular gear 55 is mounted on the outer periphery of the cylindrical body 53, and a worm gear 59 rotatable by a motor 57 fixed to the column body 49 is meshed with the gear 55. Therefore, when the motor 57 is driven, power is transmitted from the worm gear 59 to the gear 55,
The cylindrical body 53 rotates.

A through hole 5 in the left-right direction in the cylindrical body 53.
3a, through holes 41a and 35a are formed in the rotary body 41 and the rotary plate 35, respectively, and the work input space 6 is formed by these through holes 53a, 41a, 35a.
Make up one. The work transfer mechanism 63 can enter the work input space 61 from the right in FIG.

The work transfer mechanism 63 is provided on a support base 65 fixed in a state of protruding from the side surface of the column body 49. A ball screw 69 rotated by a motor 67 is arranged on the support base 65 in the left-right direction in the drawing, while a cylindrical housing 71 of the work transfer mechanism 63 has a nut member 73 screwed onto the ball screw 69. Is mounted, and the work 67 is driven by the motor 67.
Moves toward and away from the work input space 61.

The housing 71 of the work transfer mechanism 63 is opened on the left side in the figure, and the transfer mechanism main body 73 is inserted from this opening, and its rotation support portion 75 is rotatably supported via a bearing 77. There is. A work fixing pawl support portion 79 is formed on the tip side of the work conveying mechanism 63 that protrudes outward from the housing 71, and a conveyance including the work fixing pawl support portion 79 is provided on the right end surface of the housing 71 in the drawing. A motor 80 that rotates the entire mechanism body 73 is mounted.

The work W has the work fixing claw support portion 79.
It is fixed by upper and lower work fixing claws 81 and 83, which are work holding portions supported by the. Workpiece fixing claw 8 on the upper side
1, as shown in FIG. 3 is a B-B sectional view of FIG. 2, a pair of arms 81a for fixing nip the shaft W _b of the work W from both sides, the pin 85 on the base end side of the arm 81a
It is rotatable with respect to the work fixing claw support portion 79 via. The base ends of the pair of arms 81a are urged by springs 87 in the directions in which they are pulled toward each other. In other words, the spring 87 urges the tip ends of the arms 81a that grip the work W in directions away from each other.

[0025] Figure 2 workpiece fixing claws 83 of the lower side in includes a pair of arms 83a in the same manner as the work fixing claw 81 of the upper side, sandwiched fixed shaft portion W _b of the work W from both sides at the distal end By the action of a spring 89 that urges the base ends toward each other, the pins 91 can be rotated about a fulcrum, and the spring 89 urges the tip ends that fix the workpiece W in directions away from each other. become. The lower work-fixing claw 83 contacts the lower surface of the tooth portion W _a of the work W to position the work W in the axial direction.

As shown in FIG. 3, the work fixing claw support portion 7
Between the work fixing claw 81 and the work fixing claw 81, and between the work fixing claw support 79 and the work fixing claw 83, there are provided a pair of shutters 93 and 95 for opening and closing the work fixing claws 81 and 83, respectively. It is provided. Shutter 9
3 and 95 are bent portions 93 in which the base end side is bent outward.
a, 95a are respectively formed, and the bent portions 93a,
95a and each stepped portion 79 on the inner wall of the work fixing claw support portion 79
With the cylinders 97 and 99 provided between the a and FIG.
Alternatively, it can be moved in the left-right direction in FIG.

In the state of FIGS. 2 and 3 in which the shutters 93 and 95 have moved leftward in the figures, the shutters 93 and 9 are
5 presses the work fixing claws 83 and 85 from the outside, and holds and fixes the work W by the work fixing claws 83 and 85. On the other hand, when the shutters 93 and 95 move rightward from the states of FIGS. 2 and 3, the shutters 93 and 95
The pressing action on the work fixing claws 83 and 85 by the is released, and the work fixing claws 83 and 85 are fixed to the springs 87 and 8.
By the action of 9, the front end side is opened, and the clamping and fixing of the work W is released.

In the work fixing claw support 79, the motor 1
A guide master gear 103 which is driven to rotate by 01 and meshes with the tooth portion W _a of the work W is arranged. The guide master gear 103 and the motor 101 constitute a drive gear portion, and can be moved in the left-right direction in FIG. 2 via the operation arm 109 by the cylinder 107 fixed to the partition wall 105 of the transport mechanism main body 73. It is possible to engage the guide master gear 103 with the work W. In order to rotate the work W by driving the guide master gear 103, the work W by the upper and lower work fixing claws 81 and 83
It is assumed that the fixing force with respect to is weaker than the driving force of the guide master gear 103.

On the other hand, a light emitter 111 for projecting laser light is provided on the inner wall of the upper part of the work input space 61.
Light receivers 113 that receive the laser light projected from the light emitters 111 are provided on the lower inner walls facing 11 respectively. The laser light projected from the light emitter 111 is applied to the tooth portion W _a of the rotating work W conveyed into the work input space 61, and the tooth profile is extracted and phase indexed by the cutoff data to support the work rotation. Before the work W is loaded and fixed to the mechanism 25, the phase alignment at the time of meshing with the grindstone 29 is performed. That is, the light emitter 111 and the light receiver 113 constitute a phase detector that detects the phase of the tooth portion W _a of the rotating workpiece.

The work loading operation in the gear grinding machine configured as described above will be described with reference to the flow chart of FIG. First, while the work transfer mechanism 63 is at the position shown in FIG.
3 is rotated with respect to the housing 71 to move the upper and lower workpiece fixing claws 81 and 83 in a horizontal state, that is, from the state of FIG.
The state of turning by 0 degrees is set (step 101). In this state, the operation of the cylinders 97, 99 causes the shutter 93,
95 is retracted to open the upper and lower work fixing pawls 81 and 83 (step 103), and the work W is set on the opened upper and lower work fixing pawls 81 and 83 by a person or a robot (step 105). After that, the shutter 93,
95 is advanced to close the upper and lower workpiece fixing claws 81 and 83, and the workpiece W is fixedly held (step 107).

Next, the guide master gear 103 is rotated at a low speed by the operation of the motor 101 while the cylinder 107 is being rotated.
Is advanced by the operation is meshed with the tooth portion W _a of the workpiece W (step 109), then the transport mechanism body 73, a motor 80 so that the shaft portion W _b of the workpiece W becomes the angle of inclination of the provisions with respect to the vertical direction Rotate by driving (Step 1
11). In this state, the work transfer mechanism 63 is set to the motor 6
By driving 7, the tooth portion W _a of the work W is advanced and positioned to a position corresponding to the phase detector including the light emitter 111 and the light receiver 113 (step 113). here,
Tooth profile data of the work W is obtained by the light emitter 111 and the light receiver 113 (step 115), and the work W is calculated based on the tooth profile data.
The phase is adjusted so that the tooth portion W _a of the same is matched with the phase of the grindstone 29 (step 117). This phase adjustment operation will be described later.

After the phase adjustment, the work transfer mechanism 63 is moved forward by driving the motor 67 to transfer the work W to the work rotation support mechanism 25 for positioning (step 11).
9) Then, the work W is fixed by the work fixing portion including the collet chuck 26 and the tail stock 27 (step 121). At this time, the work rotation support mechanism 25 drives the motor 57 in advance to drive the cylindrical body 53 and the rotating body 4.
1 is rotated in the direction A of FIG. 1 through the rotary table 1 and the rotary plate 35, the inclination is set to be the same as the above-described prescribed inclination angle of the transport mechanism main body 73.

After the work is supported by the work rotation support mechanism 25, the operation of the cylinders 97, 99 causes the shutter 93,
95 is retracted to open the upper and lower work fixing pawls 81 and 83 (step 123), and to set the upper and lower work fixing pawls 81 and 83.
The fixation of the work W by is released. After that, the work transfer mechanism 63 is moved back to the position of FIG. 2 by driving the motor 67 (step 125), and in this state, the grindstone 29 shown in FIG. In the state of meshing with W _a , while the grindstone 29 is rotated, the work W is also rotated in synchronization with this to perform the working operation (step 127).

When the work for the work W is completed,
The work transfer mechanism 63 is moved forward to move the upper and lower work fixing claws 81 and 83 to the work rotation supporting mechanism 25, and the work W is fixed by the upper and lower work fixing claws 81 and 83, and the collet chuck 26 and the tailstock 2 are fixed.
Support release by the work fixing part consisting of 7 and
The work W is transferred from the work rotation support mechanism 25 to the work transfer mechanism 63 (step 131). afterwards,
The work transfer mechanism 63 is retracted and stopped and positioned at the position of the phase detector (step 133), the tooth profile data of the work W is taken here, and the quality of the processed product is judged (step 135).

After the quality of the work W after processing is judged, the work transfer mechanism 63 is further retracted and returned to the initial position, and then the transfer mechanism main body 73 is rotated with respect to the housing 71 to fix the upper and lower work fixing claws 81, 83. Is made horizontal (step 139), the work W is fixed by the upper and lower work fixing claws 81 and 83, and the work W is taken out (step 141).

FIG. 5 is a flow chart showing the phase adjusting operation in the step 117, FIG. 6 is tooth profile data of a master work having a tooth profile equivalent to the work W after proper machining, and FIG. 7 is before machining. The tooth profile data of the workpiece W is shown. As shown in FIG. 6B, the detection output for each tooth of the entire circumference up to the 0th tooth, the 1st tooth, the 2nd tooth ... Two output values for the teeth, namely a ₀₁ , a ₀₂ for the 0th tooth, a ₁₁ , a ₁₂ , for the first tooth, ...
The nth tooth is fetched as a _n1 and a _n2 (step 501). Next, FIG. 6 0th tooth output value relative to the position corresponding to a ₀₁ in (c) (S ₀₎ and the position data f ₁ of each tooth was, f _2, ......, and f _n, the figure ( Based on the tooth width data h ₀ , h ₁ , h ₂ , ..., H _n of each tooth in d), the assumed vertex b ₀ of each tooth, as shown in FIG.
b ₁ , b ₂ , ..., B _n are obtained (step 503).

Next, the work W is also shown in FIGS.
As shown in (e), the detection output values A ₀₁ , A ₀₂ , A ₁₁ , A ₁₂ ,
..., A _n1 , A _n2 are taken in (step 505), position data F ₁ , F ₂ , ..., F _n , and tooth width data H ₀ , H.
_{From 1} , H ₂ , ..., H _n , the assumed vertices of each tooth (B ₀ , B
₁ , ..., B _n ) is obtained (step 507). In addition,
The shaded portion in the tooth profile of FIG. 7A is the grinding allowance, and a tooth profile equivalent to the master work can be obtained by grinding this grinding allowance.

Then, the error (B ₀ −b ₀ , B ₁ −b ₁ , ..., And) between the assumed vertices of the teeth of the master work and the work W
B _n -b _n) to take out all the tooth and the average value was calculated,
A phase correction amount is obtained (step 509), and based on the correction amount, the guide master gear 103 is driven to rotate the work W by a predetermined amount, and the phase at the time of meshing with the grindstone 29 is matched (step 511).

In the gear grinding machine as described above, when the work W is loaded and set in the work rotation support mechanism 25, the column 39 in which the work rotation support mechanism 25 is mounted is provided with the work loading space 61, and the column 39 is loaded. On the other hand, since the work transfer mechanism 63 holding the work W is slid linearly through the work input space 61 from the outside on the side opposite to the work rotation support mechanism 25, the work rotation support mechanism 25 is vertically moved. Even in the grinding process for the helical gears that are inclined with respect to each other, automation can be performed without using a complicated robot mechanism, and an increase in cost can be avoided.

Further, the phase indexing teeth W _a of the workpiece W for engaging the teeth W _a of the workpiece W to the grindstone 29 (phase alignment) includes a light emitter 111 which is provided on the inner wall of the work input space 61 receiving Since the phase detector including the detector 113 is used, the installation space for the phase detector can be small, and the gear detector can be prevented from being upsized by providing the phase detector.

[0041]

As described above, according to the first invention or the fourth invention, the work transfer mechanism moves the work linearly in the work loading space while holding the work, thereby moving the work. It can be put into the work fixing part of the rotation support mechanism,
Even when the entire rotation support mechanism is rotated together with the work to process the work with the work being tilted with respect to the vertical direction, the work transfer mechanism must be configured to be able to hold the work in a state in which it is tilted. Thus, it is possible to eliminate the need for a robot mechanism that requires a complicated operation.

According to the second invention, the work transfer mechanism comprises:
By linearly moving in the work loading space while holding the work, the work can be loaded into the work fixing part of the rotation support mechanism, and the whole rotation support mechanism is rotated together with the work to tilt the work with respect to the vertical direction. Even if the workpiece is machined, the work transfer mechanism can rotate the work holding part with respect to the housing and hold the work in a state of being aligned with the inclination of the rotation support mechanism. Can be eliminated.

According to the third aspect of the invention, the work transfer mechanism is moved to the phase detector in the work input space, and the drive gear portion is driven to rotate the work, while the phase detector detects the tooth portion of the work. Is detected, and the phase at the time of meshing with the grindstone is matched based on the detection data. Since this detection operation can be performed by the phase detector fixed in the work input space while the work transfer mechanism is in the work input space, it is possible to avoid the size increase of the gear grinding machine by providing the phase detector. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of a gear grinding machine showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a portion on the right side of the work rotation support mechanism excluding the grindstone rotation support mechanism in the gear grinding machine shown in FIG.

3 is a sectional view taken along line BB of FIG.

4 is a flowchart showing a work input operation in the gear grinding machine of FIG.

5 is a flowchart showing a work phase adjusting operation in the gear grinding machine of FIG. 2. FIG.

FIG. 6 is an explanatory view showing tooth profile data processing of a master work in the gear grinding machine of FIG.

FIG. 7 is an explanatory diagram showing a tooth profile data process of a work in the gear grinding machine of FIG.

FIG. 8 is a front view showing an example of a conventional gear grinding machine.

9 is a plan view showing a state where the tooth portion of the work is ground by the gear grinding machine of FIG. 8. FIG.

[Explanation of symbols]

 W work 25 rotation support mechanism 29 grindstone 31 rotation center shaft 37 base 53 cylindrical part (rotating shaft part) 61 work input space 63 work transfer mechanism 71 housing 81, 83 work fixing claw (work holding part) 103 guide master gear (drive) Gear part) 111 Light emitter (phase detector) 113 Light receiver (phase detector)

Claims (4)

[Claims] 1. A gear grinder in which a grindstone is supported by a rotating shaft arranged in a horizontal direction, and the rotation of the grindstone grinds a tooth portion of a workpiece meshing with the grindstone while rotating in synchronization with this rotation. In, the rotation supporting mechanism for rotatably supporting the work is rotatable about a rotating shaft portion arranged in a horizontal direction in a direction orthogonal to the rotating shaft of the grindstone, and the rotating shaft portion is formed into a cylindrical shape and the inside of the cylinder is formed. Is provided with a work loading space that communicates the work fixing part side of the rotation support mechanism with the outside on the opposite side, and holds the work outside the work loading space to fix the work loading space in the work loading space. A gear grinding machine, which is equipped with a work transfer mechanism that can transfer all parts. 2. The work transfer mechanism has a housing which is slidable in a direction of approaching and separating from a work fixing portion, and the work carrying mechanism holds the work on the same central axis as the rotary shaft portion. The gear grinding machine according to claim 1, further comprising a work holding portion that is rotatable. 3. The work holding part has a drive gear part for rotating the work by meshing with a tooth part of the held work, and a tooth part of the work being rotated by the drive gear part on an inner wall of the work input space. The gear grinding machine according to claim 2, further comprising a phase detector for detecting the phase of the gear. 4. A grindstone is rotatably supported by a rotating shaft arranged in a horizontal direction, and the rotation of the grindstone grinds a tooth portion of a workpiece in mesh with the grindstone while rotating in synchronization with this rotation. In the work loading method of the gear grinding machine, the rotation support mechanism that rotatably supports the work is rotatable about a rotation shaft portion arranged in a horizontal direction in a direction orthogonal to the rotation axis of the grindstone. The portion is formed into a cylindrical shape, and inside the cylinder, there is provided a work input space that communicates between the work fixing portion side of the rotation support mechanism and the outside on the opposite side,
A work loading method in a gear grinding machine, characterized in that, from the outside of the work loading space, a work transporting mechanism moves in the work loading space while holding the work and transports it to the work fixing part to load the work. .