JPS6128647Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting tool holder that can quickly and reliably hold a cutting tool for a lathe or the like on a tool post with a simple mechanism.

With conventional tool holders, when attaching the tool to the tool rest, the operator had to use a spanner or the like to remove the bolts on the tool rest to replace and install, but this took a lot of time. There was a drawback.

This invention solves all the shortcomings of the past, and is a tool holder that can quickly and reliably hold a tool with a simple mechanism. a lower slipper which is slidable via a guide rail and has a protrusion for holding a guide on its upper part; an upper slipper which is disposed above the lower slipper and has a tapered part for wedge contact on its lower surface; and the upper slipper. a cutting tool holder frame for holding the upper side of the cutting tool; a wedge that is placed on the lower slipper in an engaged state with the cutting tool holding protrusion and is slidably installed on the upper part of the cutting tool; and the lower slipper and the upper slipper. a drive cylinder that moves together with the wedge in the direction of the guide rail; and a drive cylinder that restricts the movement of the wedge and brings the upper surface of the wedge into contact with the tapered portion between the lower slipper and the upper slipper via the wedge. This tool holder is equipped with a wedge stopper that allows the tool to be fixed by pressing.

Hereinafter, this invention will be explained in detail based on drawings showing an example of implementation.

FIG. 1 is a diagram showing the state of the tool holder in preparation for setting the tool according to an embodiment of the invention.
FIG. 2 is a diagram showing a state in which the cylinder is operated to ensure that the cutting tool is set.

The structure of a cutting tool holder according to an embodiment of this invention is as follows.

In the figure, 1 is a tool rest with a guide rail 2 for the lower slipper 3 attached to the upper part, and a right end vertical frame part 12a of the tool holder frame 12 is attached to the right end with bolts 1a; The lower slipper 7 has a holding protrusion 4 and has a lower slipper side bracket 5 attached above the right-hand side portion, and the lower slipper 7 is connected to the lower slipper 3 via the lower slipper side bracket 5 by a pin 6 on the base 7a side. It is integrally constructed, and is also pivotally connected to the cylinder rod 8 at the tip of the cylinder 9 via a pin 13 on the base 7a side, and further has a tapered part 7b for wedge contact on the lower surface, and the upper part is connected to the tool holder frame. 12 is an upper slipper held by the lower surface 12b; 10 is a cutting tool that is positioned by engaging with the cutting tool holding protrusion 4 provided on the upper part of the lower slipper 3; 11 is the cutting tool 1;
The tapered portion 7 for wedge contact of the upper slipper 7 is mounted on the upper surface of the upper slipper 7 so as to be able to slide freely.
It is a wedge having a tapered portion 11a that can be brought into contact with b.

On the left end side of the tool holder frame 12, a wedge stop 14 is integrally provided, which has a wedge contact surface 14a that contacts the left end surface 11b of the wedge 11 to restrict movement of the wedge 11. It is provided. Although the main body of the upper slipper 7 is made of steel in this embodiment, it is made of cast iron liner members 7', 7 so as to slide smoothly on the lower surface 12b of the tool holder frame 12 and the upper surface tapered portion 11a of the wedge 11, respectively. ′ shall be connected.

To describe the procedure for using the cutting tool holder according to this invention, first, as shown in FIG. It shall be placed in position and positioned using the guide holding protrusion 4. Next, when the cylinder 9 is operated and the cylinder rod 8 is moved to the left, the pin 13 is attached to the cylinder rod 8.
The upper slipper 7, which is attached via the pin 6 and the lower slipper 3 and the cutting tool 10, which are also attached integrally to the cylinder rod 8 via the pin 6 and the lower slipper side bracket 5, move integrally to the left. At this time, the wedge 11 placed on the cutting tool 10 also moves to the left together with the cutting tool 10, but the left end surface 11b of the wedge 11 is connected to the wedge abutment of the wedge stop 14 provided integrally with the tool holder frame 12. When the wedge 11 hits the contact surface 14a, the movement of the wedge 11 is stopped at that position. However, the cylinder rod 8 of the cylinder 9 still continues to move to the left, the tapered part 7b of the upper slipper 7 slides on the tapered part 11a of the wedge 11, and finally the tapered part 7b of the upper slipper 7 and the wedge 11 When the cylinder rod 8 of the cylinder 9 is in complete contact with the tapered portion 11a, the movement of the cylinder rod 8 of the cylinder 9 is stopped as shown in FIG. It is completely fixed between the slipper 7 and the lower slipper 3.

Even if cutting work is performed in this state, the cutting tool will not reach 10
Since it is securely held fixed, the material to be cut can be cut smoothly. When replacing the cutting tool 10 after completion of cutting, the cylinder rod 8 of the cylinder 9 is retracted to the right so that the tapered part 11a of the wedge 11 is replaced by the tapered part 7b of the upper slipper 7 as shown in FIG. The wedge 11 can now be moved freely away from the wedge 11, and the cutting tool 10 can be attached together with the wedge 11.

Since the tool holder according to this invention has the above-described structure, the following effects are brought about.

(1) Faster attachment and detachment of the cutting tool Since the cutting tool can be easily attached and detached by operating the cylinder, the installation and replacement time can be saved by about 2 minutes compared to before, and the operating rate of the machine can be improved.

(2) Reduction of labor load It eliminates the need to tighten and loosen bolts using spanners, etc., reducing labor load.

(3) Reduced bit troubles Until now, the clamping force of the cutting tool was not constant, resulting in chip damage or machining errors due to insufficient tightening, but with this cutting tool holder, the tightening force is constant due to the cylinder. Therefore, the above problem can be solved.

[Brief explanation of the drawing]

Figure 1 shows a tool holder according to an embodiment of this invention, and is an explanatory side view showing the state in the preparation stage when setting the tool, and Figure 2 similarly shows the state after the tool has been securely set in the cylinder. FIG. 1...Turret post, 2...Guide rail, 3...Lower slipper, 4...Bide holding protrusion, 5...
...Lower slipper side bracket, 6...Pin, 7
... Upper slipper, 7b ... Tapered part for wedge contact, 7' ... Cast iron liner, 8 ... Cylinder rod, 9 ... Cylinder, 10 ... Bit, 11
...Wedge, 11a...Tapered part on the upper surface of the wedge, 12...Bite holder frame, 13...Pin,
14... Wedge stopper, 14a... Wedge contact surface.

Claims (1)

[Scope of utility model registration request] a lower slipper that is slidable on the tool post via a guide rail and has a protrusion for holding a bide on the upper part; an upper slipper that is disposed above the lower slipper and has a tapered part for wedge contact on the lower surface; , a cutting tool holder frame for holding the upper side of the upper slipper; a wedge placed on the lower slipper in engagement with the cutting tool holding protrusion and slidably installed on the upper part of the cutting tool; and the lower slipper. a drive cylinder that moves the upper slipper together with the wedge in the direction of the guide rail; and a drive cylinder that restricts the movement of the wedge and brings the upper surface of the wedge into contact with the tapered part so that the lower slipper and the upper A cutting tool holder characterized by comprising a wedge that enables the cutting tool to be press-fixed between a slipper and a slipper.