JPS6125964Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a tool mounting holder for a machining center that supplies cutting oil to a cutting tool with an oil hole attached to the holder body by a rotary oil supply device that supplies oil from outside the machine. .

In a machining center, tool holders are automatically exchanged using an automatic exchange device and each workpiece is processed. The tool mounting holder with a rotary lubrication device is also automatically replaced with the tool attached, so the lubrication port of the lubrication pin of the tool mounting holder with a rotary lubrication device is inserted into the lubrication port of the lubrication block attached to the spindle head of the machining center. must be inserted smoothly. Therefore, the oil supply pin attached to the rotatable oil supply ring also needs to be temporarily fixed to the holder. As this rotation preventing means, for example, Japanese Utility Model Publication No. 55-15946 discloses a system in which a rotary oil supply device is locked by a locking mechanism so that the oil receiving port of an oil supply pin attached to an oil supply ring is always maintained at a constant position. However, with this holder,
The automatic tool changer and spindle head vary depending on the model, so the location of the oil supply block changes. Therefore, it is not possible to use a holder in which the oil supply pin is locked in a fixed position. In this way, it can only be used with certain machining centers, and even with certain machining centers, it cannot be used if the lubrication block is in a different position, which means that it is limited to one holder per machine, and it is inconvenient that it cannot be used with other models. Therefore, different holders must be manufactured for each model, which is uneconomical.

This idea aims to solve these problems and provide a versatile holder.The holder body consists of a shank part, a collar part, and a cylindrical part. A rotatable and fixable positioning collar is attached to the outer circumferential surface of the cylindrical part between the oil supply ring, and a crank-shaped oil supply pin with an oil receiving port on the shank side is attached to the rotation axis of the holder. A cutting tool with an oil hole, characterized in that a positioning collar is provided with an engaging means that is rotatably mounted around a parallel axis and that engages with an arm that is rotatably and fixedly attached to an oil supply pin. This relates to a mounting holder.

An embodiment of this invention will be described below with reference to the drawings. The main body 1 of the holder includes a tapered shank portion 2,
It consists of a collar portion 3 and a cylindrical portion 4, and a key groove 5 is formed in the collar portion 3, into which a key of a spindle (not shown) is fitted. A large diameter part 6 and a small diameter part 7 are formed in the cylindrical part 4, and a collar 8 is rotatably attached to the large diameter part 6. The collar 8 is formed with a radial threaded hole 9 and a notch 10 as an engagement means for engaging with an arm attached to a refueling pin (to be described later), and by screwing a bolt 11 into the threaded hole 9, a large diameter portion is formed. The collar 9 is fixed at any position of the collar 6. Instead of the notch 10, a protrusion or the like may be provided as the engagement means.

The cylindrical portion 4 has an insertion hole 12 into which a tool shank 29 is inserted, and an oil hole 13 communicating with the insertion hole 12 is provided to penetrate from the outer peripheral surface of the small diameter portion 7. A spacer 14 is fitted into the outer peripheral surface of the small diameter portion 7 in contact with the end surface of the large diameter portion 6, and an oil supply ring 16 with bearings 15, 15a oil seals 17, 17 attached to the inner peripheral surface is fitted onto the outer peripheral surface of the small diameter portion 7. The bearing 15 is fitted onto the surface of the spacer 14 with the bearing 15 in contact with the end surface of the spacer 14 . Note that 18 is a stopper ring that prevents the oil supply ring 16 from coming off in the axial direction. Therefore, the oil supply ring 16 can freely rotate around the outer periphery of the small diameter portion via the bearings 15, 15a. The oil supply ring 16 is formed with an annular oil groove 19, an oil hole 20, and an oil supply pin hole 21, which communicate with each other and connect to the cylindrical portion 4.
It communicates with the oil hole 13 of. A coil spring 22 is inserted into the oil supply pin 21, and a collar 8 is placed on top of the coil spring 22.
A positioning arm 23 that engages with the notch 10 of
A crank-shaped bent oil supply pin 24 fitted with an oil supply pin 24 is inserted, and is urged upward by a coil spring 22. The arm 23 can freely rotate around the oil supply pin 24 and can be fixed to the oil supply pin 24 with a bolt 25. Further, the oil supply pin 24 can also freely rotate within the oil supply pin hole 21.
A ball 27 for preventing backflow of cutting oil is fitted into an oil receiving port 26 at the tip of the oil supply pin 24 and is pressed against the oil receiving port by a spring 28.

FIG. 1 shows a state in which the shank 2 is inserted into the spindle of a machining center (not shown) and the oil supply pin 24 is inserted into the oil supply block.The oil supply pin 24 pushed into the oil supply block presses the coil spring 22 and is pushed down. Therefore, the engaging portion of the arm 23 fixed to the oil supply pin 24 is disengaged from the notch 10 of the collar 8 fixed to the main body, and the main body 1 is released from the fixed state with the oil supply ring 16 and becomes free to rotate. Rotates with the spindle. Cutting oil enters from the oil receiving port 26, pushes down the ball 27, passes through the oil supply pin 24, and enters the oil supply pin hole 21 and the oil hole 2.
0, insertion hole 1 through the annular oil groove 19 and oil hole 13
2 and is supplied to the oil hole in the shank 29 of the tool.

When cutting is completed and the holder stops rotating, the key position in the machining center always remains at a constant position. When cutting is completed and the rotation of the holder stops, the holder is automatically pulled out from the spindle by the manipulator, and the oil supply pin 24 of the extracted holder is pushed up by the coil spring 22 and the arm 23 fixed to the oil supply pin 24 is pushed up. The tip engages with the notch 10 of the collar 8 and the holder body 1
The rotating oil supply ring 16 is fixed to.

As mentioned above, tools are replaced automatically on a machining center, so the key position on the spindle is supposed to always stop at a fixed position. The keyway 5 also coincides with the key position of the spindle. The oil supply block is attached somewhere on the spindle head, but since the location of the oil supply block is limited depending on the model, it is not known in what part of the spindle head it is attached. However, in the holder of this invention, the collar 8 and the arm 23 are rotated by loosening the bolts 11 and 25, and the crank-shaped oil supply pin 24 is rotated to easily position the oil receiving port 26 at the position of the oil filling port of the oil supply block. can be combined,
At that position, the bolts 11 and 25 are tightened to fix the collar 8 to the main body 1 and the arm to the oil supply pin 24, respectively, so that the arm and the collar can be engaged. In particular, in this invention, the oil supply pin 24 has a crank shape, so as shown in FIG. It can be easily set at any position in the donut-shaped space 32, and by operating the bolts 11 and 25, the arm 23 with the collar 8 can be easily fixed at any position around the main body 1 and the oil supply pin 24, and the two can be engaged. It is highly versatile and economical because it can be fitted in any model, and it is very convenient because the oil filler pin can be set at the oil filler port position of the oil filler block of any model.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of an embodiment of this invention, and Figure 2 is a cross-sectional view of the first embodiment of the invention, and Figure 2 is a cross-sectional view of the first embodiment of the invention.
FIG. 3 is a plan view taken in the direction of arrow A in the figure. 1...Holder body, 2...Shank part, 3...
Flange part, 4... Cylindrical part, 5... Keyway, 8... Collar, 10... Engaging means, 12... Cutting tool insertion hole, 13... Oil hole, 16... Oil supply ring, 19...
...Oil groove, 20...Oil hole, 21...Oil supply pin hole, 2
2...Spring, 23...Arm, 24...Oil supply pin.

Claims (1)

[Scope of utility model registration request] A holder main body comprising a shank part that is inserted into the spindle of a machining center, a collar part that fits into the spindle with a key following the shank part, a cylindrical part that continues from the collar part and into which a cutting tool with an oil hole is inserted, and a cylindrical part. The oil supply ring is rotatably fitted into the cylindrical part, and the oil supply ring has an oil passage that supplies cutting oil to the cutting tool insertion hole in the cylindrical part, and is biased outward by a spring to connect the shank part of the main body to the spindle. It is equipped with a lubricating pin that presses a spring and is inserted into the lubricating block attached to the spindle head to communicate the oil passage between the lubricating block and the lubricating ring when inserted, and when the shank of the main body is not inserted into the spindle, the main body On the outer circumferential surface of the cylindrical part between the flange of the main body and the oil supply ring, the oil supply ring is equipped with a means for preventing rotation of the oil supply ring, which fixes the oil supply ring against the ring and releases the fixation when the shank part is inserted into the spindle. A rotatable and fixable positioning collar is attached to the lubrication ring, and a crank-shaped lubrication pin with an oil receiving port on the shank side is rotatably attached to the lubrication ring. A cutting tool mounting holder with an oil hole, characterized in that a positioning collar is provided with engagement means that engages with an attached arm.