JP2001198732A - Nc turret machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an NC turret machining device that can effect work positioning by its own action. SOLUTION: A positioning jig 16 attached to a turret 7 has a tip part 18 engaged in a space 13 of a gear 12, a body part 19 holding the tip part 18 in a retractile relation along the turret shaft axis, and an elastic body energizing the tip part 18 in the direction to project from the body part 19. When the tip part 18 is moved, the gear 12 is rotated accordingly to cause the tip part 18 to be seated in the space 13, upon which the gear 12 is positioned in place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC turret machining apparatus and, more particularly, to a technique for automatically positioning gears when the gears are subjected to NC turret machining.

[0002]

2. Description of the Related Art Conventionally, when a hole is formed in a tooth groove of a gear that has been cut by an NC turret processing device, the gear is mounted on a chuck device, the tooth groove is positioned manually, and then the gear is formed. Are clamped by a chuck device.

[0003]

As described above, if the positioning of the gears is manually performed, it is difficult to make the machining operation unmanned. Therefore, the gears are transferred by an automatic transfer device, and the NC turret processing device is used. The problem was how to mount the gears in a positioned state. The present invention has been made to solve the above-mentioned problem, and requires a gear positioning operation by N
An object of the present invention is to provide an NC turret processing device that can be operated by the operation of the C turret processing device itself.

[0004]

In order to solve the above problems, an NC turret machining apparatus of the present invention inserts a chuck claw into a boss portion of a gear from one side in an axial direction and clamps the gear at the boss portion. An inner diameter chuck device, and a centering stand device that faces the inner diameter chuck device, retreats toward the inner diameter chuck device from the other side in the axial direction of the gear, and rotatably holds a center engaged with the boss portion of the gear. A turret movable along a vertical Y axis, an X axis in a gear axis direction, and a Z axis perpendicular to the gear axis, and a positioning jig attached to the turret. A tip portion engaged with the tooth groove of the gear, a body portion holding the tip portion so as to be able to move back and forth in the axial direction of the turret shaft, and an elastic body for biasing the tip portion in a direction protruding from the body portion. Things.

[0005] With the above configuration, at the beginning of the machining process, the gear to be machined is gripped between the inner diameter chuck device and the centering stand device. At this time, the inner diameter chuck device is in a state where the chuck claw is inserted into the boss portion of the gear, and the centering stand device advances the gear toward the inner diameter chuck device, and the center gear engages with the opening end of the boss portion of the gear. Press in the axial direction to center the gear.

In this state, since the centering table device rotatably holds the center in this state, the gear can rotate integrally with the center while maintaining the centering state, and slides against the chuck pawl of the inner diameter chuck device. It is possible. The rotation of the turret positions the positioning jig in parallel with the Z axis orthogonal to the gear axis. As the turret moves downward along the vertical Y-axis, the tip of the positioning jig contacts the gear, and the gear pushed by the tip rotates to engage the tooth with the tooth groove. At the same time, the tip portion pressed in the Z-axis direction with the rotation of the gear retracts into the main body against the urging force of the elastic body.

The movement of the turret is stopped at a position where the leading end of the turret coincides with the axis of the gear in the Y-axis direction. And hold it. In this state, when the turret separates from the gear along the Z-axis direction, the positioning jig separates from the gear, and the blade mounted on another turret shaft faces the tooth groove by rotation of the turret. The turret moves in the Z-axis direction toward the gear, and performs predetermined processing on the gear.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 5, the NC turret processing apparatus 1 has a first slide table 3 disposed on a base 2 and a second slide table 4 disposed on the first slide table 3. Is arranged so as to be movable in the X-axis direction (the direction of the front and back of the paper), which is the axis direction of the gear of the object to be described later, and the second slide table 4 moves along the Z-axis direction orthogonal to the axis of the gear. They are provided freely, and each is provided with a drive device (not shown).

On the second slide table 4, an elevating tower 5 is provided.
The lifting frame part 6 is provided on the lifting tower 5 so as to be movable along the vertical Y-axis direction, and the turret 7 is provided on the lifting frame part 6 so as to be movable along the Z-axis direction.
The lifting tower 5 is provided with a driving device (not shown) for driving the lifting frame unit 6 up and down, and the driving device (not shown) for moving and driving the turret 7 is provided on the lifting frame unit 6.

The turret 7 rotates around an axis of a rotation shaft 8 parallel to the X axis, and six turret shafts are arranged radially around the rotation shaft 8 to drive the turret shaft (see FIG. 1). (Omitted). The work holding device 9 arranged on one side of the base 2 is, as shown in FIGS.
It has an inner diameter chuck device 10 and a centering table device 11 that are arranged to face each other in the X-axis direction. Inner diameter chuck device 10
Has a plurality of chuck claws 14 inserted into the boss portion 13 of the gear 12 of the workpiece from one side in the axial direction, and incorporates a driving device (not shown) for radially approaching and separating the chuck claws 14. I have.

The centering table device 11 is movably arranged along the axial direction of the gear 12, and is driven in and out of the inner diameter chuck device 10 by a driving device (not shown) provided in the work holding device 9. The centering stand device 11 has a center 15 that engages with the open end of the boss 13 of the gear 12 at the tapered portion at the tip, and holds the center 15 rotatably around the axis via a bearing 15a. .

The turret 7 has a positioning jig 16 mounted on one turret shaft. The positioning jig 16 includes a tip portion 18 that engages with the tooth groove 17 of the gear 12 and a main body portion 19 that holds the tip portion 18 so as to be able to move back and forth in the axial direction of the turret shaft.
And a spring (not shown) for urging the distal end portion 18 in a direction protruding from the main body portion 19.
The head 20 engages with the tooth space 17 in a hemispherical shape. The head 20 can be formed in a conical shape or a pyramid shape, and a head according to the form of the gear 12 is selected.

The operation of the above configuration will be described below. At the beginning of the machining process, the first slide table 3
And the second slide table 4 is driven to drive the turret 7
Is arranged at a predetermined position. The gear 12 is fixed to the inner diameter chuck device 10 and the centering device 1 by an automatic transfer device or a robot.
1 and is held in a state where the chuck claw 14 of the inner diameter chuck device 10 is inserted into one side of the boss 13 of the gear 12.

The centering stand device 11 moves in the Z-axis direction, presses the gear 12 in the axial direction with a center 15 which engages with the open end of the boss portion 13 of the gear 12, and performs centering of the gear 12. The gear 12 is gripped between the inner diameter chuck device 10. At this time, the inner diameter chuck device 10 has the chuck claw 14 inserted into the boss portion 13 of the gear 12 but is in an unclamped state, and the centering table device 11 rotatably holds the center 15 via the bearing 15a. The gear 12 can rotate around the axis integrally with the center 15 while maintaining the centering state, and can slide with respect to the chuck pawl 14 of the inner diameter chuck device 10.

The turret 7 is arranged above the gear 12 by driving the elevating frame 6 up and down, and the positioning jig 16 is arranged in parallel with the Z axis orthogonal to the axis of the gear 12 by the rotation of the turret 7. The turret 7 is moved in the Z-axis direction, and the head 20 of the distal end 18 of the positioning jig 16 is moved to the gear 1.
Position it above 2. The turret 7 is moved downward along the vertical Y-axis direction by the lowering of the lifting frame 6, so that the positioning jig 16 moves the head 2 of the distal end portion 18.
0, the gear 12 abuts against the gear 12 and is pushed by the tip 18.
Rotates to engage the head 20 with the tooth space 17. At this time,
Since the head 20 is hemispherical, the head 20 smoothly engages with the tooth groove 17, and the tip 18 pressed in the Z-axis direction with the rotation of the gear 12 resists the urging force of the spring. It retracts inside the main body 19.

The turret 7 stops moving at a position where the head 20 of the tip 18 coincides with the axis of the gear 12 in the Y-axis direction, and drives the inner diameter chuck device 10 to move the gear 12 Is clamped at the boss portion 13 to hold the gear 12 in the positioned state. In this state, when the turret 7 is separated from the gear 12 along the Z-axis direction, the positioning jig 16 is separated from the gear 12, and the blade (drill) attached to another turret shaft is rotated by the rotation of the turret 7. It faces the groove 17. Turret 7
Moves in the Z-axis direction toward the gear 12, and performs predetermined processing on the gear 12.

[0017]

As described above, according to the present invention, the gear to be machined is held rotatably and centered between the inner diameter chuck device and the centering stand device, and mounted on the turret. Since the tip of the positioning jig is engaged with the tooth groove of the gear and holds the gear in a positioned state, the gear positioning operation can be performed by the operation of the NC turret processing device itself, and the processing operation is completely unmanned. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of an embodiment of the present invention.

FIG. 2 is a sectional view showing a main part of the embodiment.

FIG. 3 is a sectional view showing an operation in the embodiment.

FIG. 4 is a cross-sectional view showing an operation in the embodiment.

FIG. 5 is an overall view of an NC turret processing apparatus according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 NC turret processing apparatus 2 Base stand 3 1st slide table 4 2nd slide table 5 Elevating tower 6 Elevating frame part 7 Turret 8 Rotating shaft 9 Work holding device 10 Inner-diameter chuck device 11 Centering stand device 12 Gear 13 Boss part 14 Chuck Claw 15 Center 15a Bearing 16 Positioning jig 17 Tooth groove 18 Tip 19 Main body 20 Head

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Osamu Sakagami 2-47, Shikitsu Higashi, Namiwa-ku, Osaka, Osaka (72) Inventor Isamu Inoue Isamu Inoue Higashiichi Shikitsu, Naniwa-ku, Osaka, Osaka Chome 2-47 Kubota Co., Ltd. F-term (reference) 3C025 HH06 3C028 DD08

Claims (1)

[Claims] 1. An inner diameter chuck device which inserts a chuck claw into a boss portion of a gear from one side in an axial direction and clamps a gear at the boss portion, and an inner diameter which is opposed to the inner diameter chuck device and which is opposed from the other side in the axial direction of the gear. A centering device that reciprocates toward the chuck device and rotatably holds a center that fits into the boss portion of the gear, and a direction orthogonal to the vertical Y axis, the X axis of the gear axis, and the gear axis. A turret movable along the Z axis of the turret, and a positioning jig to be mounted on the turret. The positioning jig has a tip that fits into a tooth groove of a gear, and a tip that projects in the axial direction of the turret shaft. An NC turret processing device, comprising: a main body for retreating; and an elastic body for urging a front end of the main body in a direction protruding from the main body.