JP3418223B2 - Tool holder clamp device for rotating face plate - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool holder clamp device for a rotary face plate.

[0002]

2. Description of the Related Art In boring machines and machining centers, a tool is fed in the radial direction (U axis) to continuously machine a surface perpendicular to the main axis, or the cutting diameter of the tool is automatically changed to make a hole. It was generally impossible to do . In order to make up for these drawbacks, a rotary face plate having a tool slider that moves in the radial direction is attached to the tip of the main shaft to carry out surface machining and other machining.

[0003]

[Problems to be Solved by the Invention]
Replace the blade attached to the sliderTrying toDoWhen
Moves the tool slider radially during spindle rotation
Therefore, it is difficult to clamp the tool holder.
There was a problem. To solve this, each rotating face plate
There is an automatic attachment replacement method that removes from the spindle end,
A special tool holder is mounted on the slider and automatically replaced.
DoAttempts are being made.In the present invention,Rotating face plate
Easily click the tool holder that attaches to the upper tool slider.
Lamp and unclampit canAlso try to configure
Of.on the other hand, Tool slider moves in U-axis direction
And the balance of the rotating face plate collapsedDuring rotationInduce vibration
However, cutting becomes impossible. Therefore,Tool slider
While moving in the U-axis direction,The rotation speed of the rotating face plate should be high.
I can't. Therefore, when cutting a large diameter
In comparison, it can be processed at low speeds,High speed rotation is required compared to the former
When performing drilling and small diameter boring, which are essential
IsMachining without moving the tool slider in the U-axis direction
thingThere are many. The present inventionWhen rotating at high speedTool slider
Rotate at the position where the center of the tapered hole matches the center of rotation of the spindle.
BalanceGet betterSo that the tool slider and rotating face plate
Configured to integrateWasIt is a thing.

[0004]

In order to solve the above-mentioned problems, the present invention mounts a tool slider movably in the U-axis direction on the side of the main surface of a rotary face plate that rotates on the main shaft so as to be movable in the U-axis direction. A taper hole and a fixing hole are sequentially formed in the axial direction, a tool holder is inserted into the taper hole, a pull stat is provided at the tip of the tool holder, and a collet for holding the pull stat is provided in the fixing hole. to pull the collet is installed a large number of springs to be held state, provided the drawbar to open the tool holder by pressing the collet to the center of the main shaft Rutotomoni, tools slider main shaft
Providing a through hole into which the draw bar can be fitted in the axial direction of
Insert the drawbar into the through hole and insert the rotating faceplate body and tools.
Tool holder on the rotating face plate
Configured the declamp device.

Further, a tool holder clamp device for a rotary face plate is provided in which a dowel hole is provided in a tool slider provided in a position radially from the taper hole, and a dowel pin fitted into the dowel hole is projectingly provided on an arm attached to the tool holder . .

Further , a draw-bar for moving the collet to the opposite main shaft side is provided with a through-hole in the axial direction, a rotatable operating shaft provided in the main body of the rotating face is provided with a screw portion, and a part of the tool holder is screwed. A tool holder clamp device for a rotating face plate is configured by connecting to an operating member that is screwed into the portion.

[0007]

The present invention is constructed as described above, and the moving board
Moving the collet to the counter-spindle side by pushing the opening end of the collet may be withdrawn toolholder, tool conversely
A holder can be inserted. Further, the collet is always pulled toward the main shaft side by the elastic force of the spring and is in a clamped state .

Further, the collet moves by the movement of the drawbar toward the opposite main shaft side, and the operating shaft for moving the tool slider in the U-axis direction is located in the through slot provided in the drawbar, which hinders the movement of the drawbar. It is supposed not to.

[0009]

Embodiments of the present invention will be described in detail with reference to the drawings. The rotating face plate body 2 is fixed to one end of the main shaft 1. Radial direction (U-axis direction) on the side opposite to the main shaft 1 of the rotary face plate 2.
A guide groove 4 for guiding the tool slider 3 so that the tool slider 3 is not disengaged is provided. The tool slider 3 is provided with a circular protrusion 5 at one end, and a holder 6 is provided at the center of the protrusion 5.
Is provided in the axial direction, and a movement space 7 is provided in the tool slider 3 located on the main shaft 1 side of the holder 6.

On the other hand, a taper hole 9 into which a tool holder 8 having a key for attaching a shank (not shown) having a blade is fitted is provided at a portion of the holder portion 6 which coincides with the axis of the main shaft 1. This is followed by the 1-side main shaft to the tapered hole 9 provided fixing holes 11 slightly smaller in diameter and large-diameter escape hole 10, the inner surface of the fixing hole 11 is provided with a locking projection 12.

The tool holder 8 is provided with a small-diameter holding portion 13 and a pull-stat 14 formed of a slightly large-diameter head portion on the main shaft 1 side in a continuous manner. A collet 15 for holding the tool holder 8 is provided in the fixing hole 11. The collet 15 has an inwardly gripping portion 16 for gripping the holding portion 13 of the tool holder 8 and a cylindrical chuck portion 17 having slits at several positions at one end thereof. Then, a protrusion 17 ′ is formed on the outer periphery of the end of the chuck portion 17 on the spindle 1 side.
And a locking projection 12 provided on the inner surface of the fixing hole 11.
And the chuck portion 17 is opened by engaging with. In addition, a locking step portion 18 is provided inside the chuck portion 17.
Is provided to engage the engaging head portion 19.
The engaging head 19 is formed integrally with the moving shaft 20 'having a jaw 20, a circular movable platen provided with the moving shaft 20' for movement within the movement space 7 in the axial direction It is fixed at 21.

The movable platen 21 is designed so as not to be separated to the outside by sealing the moving space 7 with a lid 22 fixed to the main shaft 1 side of the tool slider 3. This moving board 21
One end is fixed in the lid 22 through the shafts 23 at a plurality of peripheral surfaces of the shaft 23, and the other ends of the shafts 23 are held in the circular holes 24 provided in the outer peripheral surface of the holder portion 6, and the springs 25 are inserted in the circular holes 24. And the movable platen 21 is wound around the main shaft 1 by the elastic force of the spring 25.
Side, the engaging head 19 is pulled toward the spindle 1 side, the outer periphery of the chuck portion 17 of the collet 15 on the side opposite to the spindle is brought into contact with the inner surface of the fixing hole 11, and the holding portion 16 is held in a holding state. It is designed to grip 13. In addition, a through hole 26 is provided in the lid 22 and a draw bar 27 is fitted thereinto to integrate the tool slider 3 and the rotary face plate main body 2 so that the draw bar 27 penetrates the through hole 26 to move the movable platen 21. It has become.

On the other hand, the rotary face plate main body 2 is provided on the main shaft 1 side so as to pass through the working shaft hole 28 in the U-axis direction.
A guide communication hole 29 is provided in a part of the guide groove 4 side of 8 so that the operation shaft hole 28 and the guide groove 4 communicate with each other.

An operating shaft 30 is built in the operating shaft hole 28, a screw portion 31 is provided at one end, and a nut 33 fixed to a connecting portion 32 projecting from the projecting portion 5 of the tool slider 3 is screwed. It is supposed to do. This screw part 31
A bevel gear 34 is fixed on the opposite side. A bevel gear 35 that meshes with the bevel gear 34 is fixed to an end of a hollow U shaft 36 provided inside the hollow of the main shaft 1.

Further, the drawbar 2 is provided inside the hollow U-axis 36.
7 is movably mounted in the axial direction, and a draw bar 27 has a through-slot 37 that partially penetrates the operating shaft 30.
(See FIG. 2).

It should be noted that one end of an arm 38 is fixed to the tool holder 8 and a dowel pin 39 is projectingly provided on the free end thereof, and the dowel pin 39 is provided on the tool slider 3 at a position distant from the taper hole 9 in the radius (U axis) direction. The tool slider 3 and the tool holder 8 can be integrated with each other by fitting into the dowel hole 40.

This embodiment is constructed as described above,
When the draw bar 27 is pushed to the tool slider 3 side, the movable platen 21 is moved to the opposite main spindle side against the elastic force of the springs 25, 25 ... At the tip, and the movable shaft 20 'is also moved. When the chuck portion 17 is moved by the jaw portion 20 along with the movement of the moving shaft 20 ′, the end portion of the chuck portion 17 is located inside the escape hole 10.

When the tool holder 8 to which the shank having a blade is attached is inserted into the tapered hole 9 in the above state, the end of the chuck portion 17 is expanded by the pull-stat 14 at the tip and inserted into the inside. When the tool holder 8 is inserted, the drawbar 27 is opened, the movable platen 21 is moved to the main spindle 1 side by the elastic force of the spring 25, and the chuck head 17 is moved by the engaging head 19 to fix the end portion to the fixing hole. 11
It is positioned inside and the gripping part 16 is contracted to grip the holding part 13 of the tool holder 8. At this time, the dowel pin 39 of the arm 38 is fitted into the dowel hole 40, and the tool holder 8 and the tool slider 3 are coupled so as not to be separated.

In the above-mentioned state, the main surface 1 is rotated by the drive source (not shown) to rotate the rotary face plate body 2, and the work piece (not shown) is processed by the blade. On the other hand, are integrated is when fitting the tip of the draw bar 27 into the through hole 26 and the tool slide 3 and the rotating surface plate body 2, becomes as it is possible to perform drilling and boring in the spindle 1 is rotated at a high speed.

[0020] When changing the position of the tool, the working shaft 30 by engagement of the bevel gears 35 and 34 when driving the hollow U shaft 36 you rotate. Actuating member 33 is screwed to the screw portion 31 is moved in the U-axis direction by rotation of the actuating shaft 30, the position of the tool is you change.

When the tool holder 8 is removed, the hollow U-axis 36 is rotated to align the tool holder 8 and the axis of the main shaft 1 with each other, and then the draw bar 27 is pushed. The end of the chuck portion 17 of the
Located within, and you Nukitoro the tool holder 8, Purusutatto 14 press and expand the chuck portion 17, it is possible to easily extract the tool holder 8. At this time, the dowel pin 39 is also pulled out from the dowel hole 40.

[0022]

Since the present invention has the above-described structure and operation, the tool holder can be easily clamped and unclamped only by moving the collet. Also, by fitting the tip of the draw bar into the through hole provided in the tool holder, the tool holder and the rotating face plate body are integrated, and drilling and boring by high speed rotation can be performed well without disturbing the rotational balance. You can one
On the other hand, since the drawbar for moving the collet is provided with a through hole to penetrate the operation shaft for moving the tool slider, the tool slider and the drawbar can be worked without any trouble. Further, the tool holder and the tool slider can be integrally connected by fitting the dowel pin into the dowel hole.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a tool holder clamp device for a rotary face plate according to the present invention.

FIG. 2 is a plan view of a drawbar portion.

[Explanation of symbols]

1 spindle 2 Rotating face plate body 3 Tool slider 4 guide groove 5 Projection 6 Holder part 7 Space for movement 8 Tool holder 9 Taper hole 10 escape holes 11 fixing holes 12 Locking protrusion 13 Holder 14 Pullstat 15 collets 16 grip 17 Chuck part 17 'protrusion 18 Locking step 19 Head for engagement 20 jaw 20 'moving axis 21 Moving board 22 Lid 23 axes 24 round holes 25 springs 26 through holes 27 Drawbar 28 Working shaft hole 29 Guide communication hole 30 working axis 31 screw part 32 connection 33 nuts 34 bevel gears 35 bevel gears 36 hollow U-axis 37 Through hole 38 arms 39 Dowel Pin 40 dowel holes

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B23B 31/117 B23B 29/034 B23B 3/26 B23B 39/00

Claims (4)

(57) [Claims] 1. A tool slider is movably mounted in the U-axis direction on the side of the main surface of a rotary face plate that rotates on a main shaft so as to be movable in the U-axis direction, and a taper hole and a fixing hole are sequentially formed in the axial direction of the main shaft of the tool slider. Insert the tool holder into the taper hole, provide a pull stat at the tip of the tool holder, provide a collet to hold the pull stat in the fixing hole, and install a number of springs that pull the collet on the peripheral surface of the taper hole to hold it. press collet to the center of the main shaft Rutotomoni provided drawbar for opening the tool holder, the tool slide spindle
Providing a through hole into which the draw bar can be fitted in the axial direction of
Insert the drawbar into the through hole and insert the rotating faceplate body and tools.
Rotation characterized by being able to integrate lidar
Face plate tool holder clamp device. 2. A tool for a rotary face plate according to claim 1, wherein a movable platen is fixed to the side opposite to the taper hole of the collet, and the movable platen is pressed by a large number of springs to pull the collet. Holder clamp device. 3. A dowel hole is provided on the tool slider at a position radially provided from the taper hole, and a dowel pin fitted into the dowel hole is projectingly provided on an arm attached to the tool holder. Tool holder clamp device for rotating face plate. 4. A drawbar for moving a collet to the opposite main shaft side is provided with a through-hole in the axial direction, a rotatable operating shaft provided in a rotary face plate body is provided with a screw portion, and a part of a tool holder is screwed. The tool holder clamp device for a rotary face plate according to claim 1, wherein the tool holder clamp device is connected to an actuating member that is screwed into the portion.