JPS6047041B2 - Turret turret for rotating tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a turret tool rest to which a rotary tool for a multi-tasking lathe can be attached.

When a rotary tool is mounted on a turret tool post, a certain amount of span distance is required for the bearing as a support. However, in conventional turret tool rests for rotary tools, the drive shaft for transmitting rotational force to the tool is provided at a position offset from the center of rotation of the turret tool rest. Therefore, the turret tool rest must have an external dimension at least equal to the sum of the distance from the center of rotation to the drive shaft and the distance of the bearing span of the rotary tool, and the turret tool rest must be large. Therefore, when a long rotary tool is used, the swing radius of the tool becomes large, and interference with other members on the bed becomes a problem, sometimes making tooling impossible. The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention has been made in order to reduce the external dimensions of the turret tool rest by making the rotational force transmission axis to the tool coaxial with the turret tool rest rotation axis, and to reduce the external dimensions of the turret tool rest. A rotational force transmission clutch is disposed on the axis of the rotary tool, and the clutch is engaged and disengaged in conjunction with the raising and lowering movement of the turret for turning.

Next, embodiments of the present invention will be described based on the drawings. A sleeve-shaped fixed shaft 3 is fixed to the base 1 via a bracket 2. In addition, a sleeve-shaped lifting rotation shaft 4 is attached to the base 1 so as to be coaxial with the fixed shaft 3 and covering the fixed shaft. The stand 5 is fixed. Further, a piston 6 is fixedly attached to the elevating rotation shaft 4, and is fitted into a cylinder 7 provided on the base 1 to perform the elevating operation of the turret tool rest 5. A gear 8 is fixed to the ascending/descending rotation shaft 4, and the turret tool rest 5 is driven by a drive device (not shown).
is made to rotate and index. A pair of curvic couplings 9 are attached to the upper surface of the base 1 and the lower surface of the turret tool rest 5, and perform rotation indexing and positioning of the turret tool rest 5. A sleeve-shaped rotating shaft 10 is attached to the inside of the sleeve-shaped fixed shaft 3 coaxially, and the elevating and lowering rotation shaft 4 and the fixed shaft 3 form a Ξ heavy structure shaft. A housing 11 is fitted into the center of the turret tool rest 5, and a pin 12 is protruded from the lower end and engages with a notch in the upper end flange portion 13 of the fixed shaft 3 to prevent the housing 11 from rotating. is doing. A bevel gear 14 is supported at the center of the housing 11 so as to be aligned with the same axis as the rotating shaft 10, the shaft portion is hollow, and the lower end of the shaft is splined with the upper end of the rotating shaft 10 so that only rotation can be transmitted. is making a connection. A support 15 is fixed to the housing 11, and a clutch shaft 16 is slidable on this support 15 in a direction perpendicular to the rotation axis of the turret tool rest 5, that is, in a radial direction of the turret tool rest 5. installed. A clutch body 18 having a clutch pawl 17 at its outer end is rotatably supported on one end of the clutch shaft 16, and moves as the clutch shaft 16 slides. A compression spring 19 is inserted between the other end of the clutch shaft 16 and the housing 11, and constantly urges the clutch shaft 16 toward the clutch pawl 17. A bevel gear 2 that meshes with the bevel gear 14 through a spline connection is disposed on the outer periphery of the clutch body 18.
0 is attached, and this bevel gear 20 is rotatably supported on the housing 11. Two support rods 21 are attached to the upper end flange portion 13 of the fixed shaft 3 in parallel to the axial center line while maintaining an engaged state, and two support rods 21 are attached to the upper end flange portion 13 of the fixed shaft 3 in parallel to the axial center line. 1st link pin 2
2 are implanted inwardly facing each other at right angles to the axis. An L-shaped link 23 that is engaged with the first link pin 22 at one fork-shaped end and whose other end is engaged with the compression spring 19 side of the clutch shaft 16 is attached to the housing 11 with the second link pin 24. It is pivoted by. A third link pin 25 is implanted at the end of the L-shaped link 23 at the engagement portion of the L-shaped link 23 with the clutch shaft 16, and a square piece 26 is rotatably attached to the third link pin 25. is,
A rectangular piece 26 is fitted into a two-sided cutout cut into the end of the clutch shaft 16. A tool socket 27 is rotatably supported on the tool mounting portion of the turret tool post 5.
A clutch pawl 28 that engages with the clutch pawl 17 of the clutch body 18 is provided on the rear end surface of the tool socket 27 . A rotation preventing member 30 for the tool 29 housed in the socket is attached to the rear part of the tool socket pawl 27 to prevent rotation. Note that the support body 15 and the clutch shaft 16 are provided with a protruding hole that is connected to the hollow hole of the bevel gear 14. Next, the effect will be explained.

It is assumed that a rotary tool 29 is housed in the tool mounting portion of the turret tool post 5. First, in response to a command, pressure fluid is sent into the lower chamber of the cylinder 7, the piston 6 is raised, and the elevating/lowering pivot shaft 4 and the turret tool rest 5 are raised. As the turret tool post 5 rises, the curvic coupling 9 is uncoupled, and the housing 11 also rises. However, the pin 12 of the housing 11 and the flange portion 13 of the fixed shaft 3
It remains in an engaged state without being disengaged. Even if the housing 11 rises, the first
Since the link pin 22 does not move, the L-shaped link 23 is moved relative to the housing 1 by the rise of the second link pin 24.
1 and thus the L-shaped link 2
Clutch shaft 16 engaged with the other end of 3 is a compression spring 19
is forced to slide to the right against the and clutch body 18
The clutch pawl 17 and the clutch pawl 28 of the tool socket 27, which have been engaged with each other until now, are disengaged from each other.
Next, the rotation is transmitted to the gear 8, and the elevating and lowering rotating shaft 4 and the turret tool rest 5 are rotated and indexed. However, at this time, the housing 11 does not rotate because it is engaged with the flange portion 13 of the fixed shaft 3 through the pin 12, and the new rotary tool 29 of the turret tool rest 5 pivots to a position facing the clutch body 18. Thereafter, pressurized fluid is sent to the upper chamber of the cylinder 7, the piston 6, the vertical pivot shaft 4, and the turret tool rest 5 are lowered, and the pair of curvic couplings 9 are connected. At this time L
The shaped link 23 rotates clockwise to move the clutch shaft 16 and clutch body 18 to the left, and engages the clutch pawl 17 with a clutch pawl 28 provided at the rear end of a socket 27 for a new rotary tool. Thereafter, the rotation is transmitted to the rotating shaft 10 by a drive means (not shown), and the two bevel gears 14,
20 to the rotary tool 2 via the clutch body 18, clutch pawls 17, 28, tool socket 27, and anti-rotation member 30.
Rotation is transmitted to 9. As described in detail above, in the present invention, the rotation axis for transmitting rotation to the rotary tool attached to the turret tool rest is aligned with the rotation axis of the turret tool rest, so that the external dimensions of the turret tool rest can be reduced.

Also, with a turret tool rest of the same size, it is possible to increase the number of tools that can be attached. Additionally, the mechanism was simplified because a pawl clutch shaft was arranged on the tool axis, and the shaft was engaged and released in conjunction with the raising and lowering of the turret tool rest.
Furthermore, since a hollow hole is provided at the center of rotation of the turret tool post, when a measuring tool is installed on the tool mounting surface of the turret tool post, the electric wire for the measuring sensor can be passed through, making it easy to handle the wires. .

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a turret tool post showing an embodiment of the present invention, Fig. 2 is a view taken along the line -■ in Fig. 1, Fig. 3 is a cross-sectional view taken along -■ in Fig. 2, and Fig. 4 2 is a cross-sectional view taken along the line ■--■ in FIG. 2, and FIG. 5 is a cross-sectional view showing how the rotary tool is attached to the turret tool post. 4... Lifting rotation axis, 5... Turret turret, 10... Rotating shaft, 16... Clutch shaft, 23... L-shaped link, 29...Tools.

Claims (1)

[Claims] 1. A shaft for raising and lowering the turret tool post and a rotating shaft for transmitting rotation to a tool attached to a tool mounting surface on the turret tool post are provided on the same axis, and rotation is transmitted from the rotating shaft for rotation and indexing. A clutch shaft that is located on the same axis as the tool on the turret tool post and that engages and disengages rotation transmission to the tool is non-swivelably provided in the center of the turret tool post, and the engagement and disengagement of the clutch shaft is performed on the turret tool post. A turret tool post for a rotary tool, characterized in that a link mechanism is provided in the center of the turret tool post in a non-rotatable manner so that the link mechanism is linked to the lifting and lowering movements of the stand.