JPH0623622A - Conical gear machining device - Google Patents

Abstract

PURPOSE:To provide a conical gear machining device which allows easy mounting/demounting of a workpiece to/from a workpiece spindle. CONSTITUTION:A workpiece spindle stock 20 is turned 90 deg.C from the position opposed to a tool spindle stock 38 by using a workpiece spindle stock turning motor 82 so that it can be parallel to the moving direction of a workpiece spindle stock moving device 58 and the workpiece holding end of a workpiece spindle 24 can be directed outward of a bed 10. In such a state, if the workpiece spindle stock 20 is moved by the workpiece spindle stock moving device 58, the workpiece spindle 24 is put close to both arms 88 of an automatic mounting/ demounting device 86 which is ready outside. Easy delivery of a workpiece 26 between the automatic mounting/demounting device 86 and the workpiece spindle 24 is allowed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for processing conical gears such as a helical bevel gear and a hypoid gear.

[0002]

2. Description of the Related Art As an apparatus for processing a conical gear, there is, for example, one described in Japanese Patent Laid-Open No. 3-221317. This device comprises a workpiece headstock having a workpiece spindle for holding a workpiece and rotating the workpiece around an axis, and a tool spindle for holding a workpiece and rotating the machining tool around the axis. Tool headstock,
A work headstock turning device that tilts the work headstock with respect to the tool spindle by turning the work headstock about a turning axis perpendicular to the work spindle, and a work headstock in a direction perpendicular to the turning axis. And a workpiece headstock moving device that moves the workpiece spindle relative to the tool spindle.

In the above apparatus, the workpiece is held on the workpiece spindle and the machining tool is held on the tool spindle.
The work headstock swiveling device swivels the workhead stock around a swivel axis perpendicular to the work spindle, thereby adjusting the tilt angle of the work piece with respect to the machining tool. The relative position of the workpiece relative to the machining tool is adjusted by moving the workpiece headstock in a direction perpendicular to the turning axis by the workpiece headstock moving device.

[0004]

In the above apparatus, the work headstock is disposed adjacent to the tool headstock so that the work spindle is substantially opposed to the tool headstock, and the work headstock turning device is also provided. Since the swivelable range of is set within an angle (for example, about 30 degrees) corresponding to the inclination angle of the gear to be machined, the workpiece spindle is always substantially opposed to the tool spindle, that is, in the gear machining device. It is said to be headed toward. Therefore, there is a problem that the distance from the worker located outside the gear machining apparatus to the work spindle is long, and it is difficult to attach and detach the work to the work spindle. Also,
When automatically attaching and detaching the work with the automatic attaching and detaching device,
There is also a problem that it is difficult to avoid interference between the automatic attachment / detachment device and the tool headstock.

In view of this problem, an object of the present invention is to provide a conical gear machining apparatus capable of easily attaching and detaching a workpiece to and from a work spindle by an operator or an automatic attaching / detaching apparatus.

[0006]

The object of the present invention is to provide a conical gear machining apparatus including the work headstock, the tool headstock, the work headstock swivel device and the workhead stock moving device. The object headstock turning device turns the work headstock until the work head spindle is parallel to the moving direction of the work headstock and is oriented toward the outside of the gear machining device.

[0007]

In the gear machining device configured as described above,
When the workpiece is attached to or detached from the workpiece spindle, the workpiece spindle turning device turns the workpiece spindle parallel to the moving direction of the workpiece headstock and toward the outside of the gear machining device. For example, in the case where the work headstock moving device moves the work headstock in a direction orthogonal to the tool spindle, the work headstock turning device causes the work headstock and the work headstock to move to the tool spindle. It is swung until it is in a direction orthogonal to, and toward the outside of the gear machining device, that is, a direction away from the machining space. Further, when the work headstock moving device moves the work headstock in a direction parallel to the tool spindle, the work headstock swivel device causes the workheadstock and the workstock spindle to move to the tool spindle. Parallel to
And it is turned until it is the direction toward the outside of the gear processing device. After the turning, the workpiece headstock moving device moves the workpiece headstock toward the outside of the gear machining device, so that the workpiece is positioned at the outermost position of the gear machining device in the moving direction.

[0008]

Therefore, the worker can easily attach and detach the work piece. Alternatively, it becomes easy to secure a space for disposing the automatic workpiece attaching / detaching device. In particular, since the workpiece is oriented parallel to the moving direction of the workpiece headstock moving device, the automatic attachment / detachment device is made to stand by at a position facing this workpiece, so that the workpiece between the workpiece headstock and Can be delivered using the movement of the work headstock,
The structure of the automatic attachment / detachment device can be simplified.

Moreover, since the work headstock turning device and the workhead moving device are indispensable for adjusting the position of the work before machining, it is not necessary to separately provide a special device, and the device cost is reduced. It can be low.

When the work headstock turning device turns,
When the work headstock and the tool headstock interfere with each other, the work headstock moving device or the tool headstock moving device may separate the work headstock and the tool headstock from each other and then rotate them.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a bevel gear machining apparatus will be described in detail below with reference to the drawings. 1-4, 10 is a bed. Ribs 12 are formed on the periphery of the bed 10. The upper surface of the bed 10 is horizontal and a work moving table 16 is provided. A swivel base 18 is provided on the work moving base 16 so as to be swivelable about a vertical axis, and a work headstock 20 is fixed on the swivel base 18.

A work spindle 24 is rotatably held on the work spindle stock 20. The work spindle 24 extends in the horizontal direction, and is intermittently rotated about its own axis by a constant angle by the indexing motor 30. A work piece 26, which is indicated by a chain double-dashed line in FIG. 1, is held at the end of the work piece spindle 24 projecting from the work piece headstock 20.

A tool moving base 34 is disposed on the bed 10 adjacent to the work moving base 16, and a tool spindle base 38 is mounted on the moving base 34. Tool headstock 38
The tool spindle 40 is rotatably held by the tool. Figure 2
As shown in, the tool spindle 40 projects from the headstock 38 in a state of facing the workpiece headstock 20, and in the reference state, the tool spindle 40 and the workpiece spindle 24 are concentrically opposed to each other. ing. Work spindle 2 of tool spindle 40
A cutter for cutting gears (not shown) is held at a portion opposite to 4, and the cutter, which is a machining tool, is rotated around the axis by the tool spindle drive motor 42 together with the tool spindle 40, and the tool spindle is also rotated. Feed motor 46
Thus, it is fed in the axial direction, that is, in the direction in which the workpiece 26 held by the workpiece spindle 24 is moved toward and away from the workpiece 26.

As shown in FIG. 3, a pair of guide rails 52 extending in the direction orthogonal to the tool spindle 40 are disposed below the work moving table 16. The guide rail 52 is fixed to the bed 10 and guides the work moving base 16 in horizontal movement in a direction orthogonal to the tool spindle 40.

As shown in FIG. 1, the bed 10 is provided with a work headstock moving motor 56. The motor 56 moves the work headstock 20 along with the work moving base 16 along the guide rail 52. As a result, the workpiece 26 held by the workpiece spindle 24 is moved in the horizontal direction perpendicular to the tool spindle 40.

In the present embodiment, the work moving table 16,
A work headstock moving device 58 is constituted by the guide rail 52, the work headstock moving motor 56, and the like.

Below the tool moving table 34, a tool spindle 40 is provided.
A guide rail 62 extending in a direction parallel to the guide rail 62 is provided to guide the movement of the tool moving base 34 in the horizontal direction parallel to the tool spindle 40. Further, the bed 10 is provided with a tool headstock horizontal movement motor 66, and the motor 66 causes the tool headstock 38 to move together with the moving base 34 along with the guide rails 62.
The work tool held by the tool spindle 40 is moved toward and away from the workpiece 26 by being moved along.

The tool headstock 3 is mounted on the tool moving base 34.
A column 70 is provided adjacent to the column 8. Column 70
A pair of guide rails 72 extending in the vertical direction is provided on the surface of the tool headstock 38 side, and the tool headstock 38 is slidably fitted to the guide rails 72. The column 70 includes a tool headstock vertical movement motor 76, and the tool headstock vertical movement motor 76 drives the tool headstock 38 to move up and down along the guide rails 72.

A swivel base 18 provided on the work moving base 16.
Is rotated by a workpiece headstock rotation motor 82,
Along with this, the work headstock 20 is swiveled around a vertical axis perpendicular to the axis of the work spindle 24. Swivel 18
The swivel range of 90 degrees, that is, the workpiece spindle 24
2 is between the state parallel to the tool spindle 40 shown in FIG. 2 and the state perpendicular to the tool spindle 40 shown in FIG. 1, and not only the workpiece spindle 24 is tilted with respect to the tool spindle 40, but also the workpiece. The workpiece holding end of the workpiece spindle 24 is rotated parallel to the direction in which it is moved by the headstock moving device 58 and outside the gear machining device, that is, in the direction away from the machining space of the workpiece 26 by the machining tool. It is like this.

Each of the motors 30, 42, 46, 56, 66 and 76 including the work headstock turning motor 82 is
The servomotor is capable of both forward and reverse rotation, and is connected to the control device via a drive circuit (not shown). The control device is mainly composed of a microcomputer, and each motor is driven and controlled in accordance with a workpiece position adjusting program, a gear machining program, etc. stored in the control device.

On the other hand, as shown in FIG. 1, an automatic attachment / detachment device 86 is provided outside the bed 10. The automatic attachment / detachment device 86 includes a pair of arm portions 88 and a workpiece gripping tool 90 provided at the tip of the arm portions 88, and by being positioned on the extension line of the guide rail 52, the workpiece spindle is provided. The work 26 is delivered to and from the work spindle 24 with the table 20 moved to the outermost position.

The operation of the gear machining apparatus configured as described above will be described. When the gear machining apparatus is not operating, each motor is stopped, and as shown in FIG.
0 and the tool spindle stock 38 face each other, and both spindles 2
4, 40 are in the reference state in which they are located on the same straight line.

First, the tool headstock horizontal movement motor 66 retracts the tool headstock 38 to separate it from the workheadstock 20, and then the workheadstock turning motor 82 moves the workheadstock 20 counterclockwise. The workpiece holding end of the work spindle 24 is turned outward by turning 90 degrees in the direction.

Next, the workpiece headstock moving device 58 moves the workpiece headstock 20 to the outer position on the bed 10, and the workpiece holding end of the workpiece spindle 24 approaches the automatic attachment / detachment device 86. . At this time, the automatic attachment / detachment device 86
The workpiece 26 to be mounted is grasped in advance by the grasping tool 90 of the workpiece 26, and the workpiece 26 is moved along with the movement of the workpiece headstock 20.
Is inserted into the workpiece holding end of the workpiece spindle 24. Therefore, after the workpiece headstock 20 is stopped, the workpiece holding end of the workpiece spindle 24 is held and the gripper 90 is opened, so that the workpiece 26 of the workpiece 26 is moved to the workpiece spindle 24 by the automatic attachment / detachment device 86. Installation is completed.

After mounting the workpiece 26, the workpiece headstock moving device 58 returns the workpiece headstock 20 to the reference position, and subsequently, the workpiece headstock 20 is rotated until it faces the tool headstock 38. To be Tool headstock horizontal movement motor 6
After the tool headstock 38 is brought close to the work headstock 20 by 6, the motors are driven in accordance with the work position adjusting program, and the relative position adjustment and the angle adjustment between the machining tool and the work 26 are performed. After the adjustment is completed, the machining tool is rotated by the tool spindle drive motor 42, and the workpiece 26 is intermittently rotated by the indexing motor 30, so that the workpiece 26 is subjected to gear cutting and spiral teeth are formed. To be done.

After the machining is completed, the tool headstock 34 is moved back again by the tool headstock horizontal movement motor 66 to be separated from the workhead stock 20, and then the work headstock turning motor 82 is used to move the workstock headstock. 20 is about 90 counterclockwise
The workpiece holding end of the workpiece spindle 24 is turned outward, and the workpiece head moving device 58 causes the workpiece holding end of the workpiece spindle 24 to approach the automatic attachment / detachment device 86. At this time, since the grasping tool 90 of the automatic attachment / detachment device 86 is open and is on standby without grasping anything, the workpiece 26 is inserted between the two grasping tools 90 as the workpiece headstock 20 moves. After the work headstock 20 is stopped, the gripping tool 90 is closed, and the work holding end of the work spindle 24 is brought into a non-holding state, so that the work 2 after machining is completed.
6 is delivered to the automatic attachment / detachment device 86.

The automatic attachment / detachment device 86 conveys the received work 26 after processing to the work transfer conveyor and releases it, receives another work 26 before processing from the work transfer conveyor, and receives the work spindle. Attach to 24. Workpiece headstock 2
0 is returned to the reference position by the work headstock moving device 58, and is rotated until the work headstock 20 faces the tool headstock 38. Then, after the relative position adjustment and the angle adjustment between the processing tool and the work piece 26 are performed, the gear cutting is performed.

In the present embodiment, the work headstock 20 is moved by the work headstock moving device 58 in the direction perpendicular to the tool headstock 40, so that the swivel base 18 is turned. The work spindle 24 is rotated by 90 degrees by the motor 82, so that the work spindle 24 is moved to the work spindle stock 2
Although it is arranged to be parallel to the moving direction of 0, the workpiece headstock moving device 58 moves the workpiece headstock 20 to the tool spindle 40.
In the case of moving in a direction parallel to, the swivel is moved from the reference position by the work headstock swivel motor 82.
By rotating the workpiece spindle 24 by 0 degrees, the workpiece spindle 24 is parallel to the moving direction of the workpiece spindle stock 20 and the workpiece holding end of the workpiece spindle 24 faces the outside of the bed 10.

Further, in the present embodiment, the tool headstock 3
8 is movable in the horizontal and vertical directions, and the work headstock 20 is movable in a direction orthogonal to these two directions. However, the tool headstock 34 is fixed and the workhead stock 20 is used as a tool. The moving direction of each headstock can be appropriately changed, for example, by making the headstock 38 movable in three directions or two directions (in the case of a processing device using only a bevel gear).

Further, in the present embodiment, the automatic work attachment / detachment device 86 is made to stand by in the moving direction of the work headstock 20 so that the work 26 is automatically attached / detached. Instead of the attachment / detachment device 86, an operator may stand by in the moving direction of the work headstock and attach / detach.

In addition, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a plan view showing a gear machining device according to an embodiment of the present invention.

FIG. 2 is a plan view showing another operating state of the device.

FIG. 3 is a front view of the gear machining apparatus in the state of FIG.

FIG. 4 is a right side view of the gear machining device in the state of FIG.

[Explanation of symbols]

 16 Workpiece Moving Platform 18 Swivel Table 20 Workpiece Spindle 24 24 Workpiece Spindle 26 Workpiece 34 Tool Moving Platform 38 Tool Spindle 40 Tool Spindle 52 Guide Rail 56 Work Spindle Moving Motor 58 Work Spindle Moving Device 82 Machine Spindle head swing motor 86 Automatic workpiece attachment / detachment device

Claims (1)

[Claims] 1. A workpiece headstock including a workpiece spindle for holding a workpiece and rotating the workpiece around an axis, and a tool spindle for holding a workpiece and rotating the machining tool around the axis. A tool headstock provided, a work headstock turning device for turning the work headstock about a turning axis perpendicular to the work spindle to incline the work spindle with respect to the tool spindle; In a conical gear machining apparatus including a work headstock moving device that moves a headstock in a direction perpendicular to the turning axis to relatively move the work spindle relative to the tool spindle, the work headstock turning Gear cutting, characterized in that the device turns the work headstock until the work spindle is parallel to the movement direction of the work headstock and is in the direction toward the outside of the gear working device. apparatus