JP4409911B2 - Chuck device - Google Patents

Description

The present invention relates to a chuck equipment.

  As shown in FIG. 1, the conventional chuck device for holding a cutting tool such as a drill has a holder 23 provided with an insertion hole 22 for inserting the cutting tool 21 from the tip opening 22a. An oil introduction hole 24 that communicates with the insertion hole 22 is provided on the base side, a tool holding part 25 that holds the cutting tool 21 is provided at the tip of the holder 23, and the cutting tool is further provided in the insertion hole 22. A tool stopper 26 that prevents the 21 from being immersed during work is screwed, and the tool stopper 26 is provided with an oil passage hole 28 that communicates with the insertion hole 22.

  This chuck device is usually fitted to the spindle of a machine tool such as a machining center, but the protruding amount of the cutting tool 21 (the protruding amount from the tip of the holder) must be set accurately.

  Conventionally, the cutting tool 21 is mounted on the holder 23 by first inserting an adjustment tool 27 such as a wrench from the distal end side of the insertion hole 22 and screwing the tool stopper 26, and then inserting the insertion hole 22. The cutting tool 21 is inserted from the front end opening 22a of 22 and the base end of the cutting tool 21 is brought into contact with the tool stopper 26 at an appropriate position.

  Therefore, since the cutting tool 21 is attached after the tool stopper 26 is positioned, it is troublesome to position the tool stopper 26 so that the cutting tool 21 has an appropriate protruding amount. After the cutting tool 21 is attached, the tool stopper When the position of 26 is an inappropriate position or when it is desired to finely adjust the protruding amount of the cutting tool 21, the cutting tool 21 is naturally removed from the holder 23 and the position of the tool stopper 26 is set in the same manner as described above. After adjustment, the cutting tool 21 has to be mounted again, which is very troublesome.

The present invention solves the above-described problems. The cutting tool can be easily set to a desired protrusion amount (by a single positioning operation), and the conventional troublesome adjustment is performed many times. it is not necessary, has an object to provide a very easily chuck equipment was soo been very practical, which can improve the workability protrusion amount and determining the cutting tool.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A chuck device for holding a tool 1, which has a holder 3 provided with an insertion hole 2 for inserting the tool 1 from a tip opening 2 a, and a tool holder for holding the tool 1 at the tip of the holder 3 A portion 5 is provided, an oil introduction hole 4 communicating with the insertion hole 2 is provided at the base end of the holder 3, and a tool stopper 6 is provided in the insertion hole 2. Formed by a base body 6a to be screwed into the insertion hole 2 and a tool receiver 6b having an insertion portion 15 to be inserted into a concave portion 14 provided on the distal end opening 2a side of the insertion hole 2 of the base body 6a. An O-ring 16 is provided between the bottom surface of the concave portion 14 of the base 6a and the tip of the insertion portion 15 of the tool receiver 6b. The tool receiver 6b is connected to the base 6a. The base 6a and the base 6a Holes 6 a ′ and 6 b ′ serving as oil passage holes are formed in the tool receiver 6 b, respectively. The hole 6 a ′ formed in the base body 6 a rotates the tool stopper 6 in the insertion hole 2. An appropriate adjustment tool 7 for rotating and retreating is set in the insertion hole 8, the rear surface of the base 6 a of the tool stopper 6 is formed in a conical recess, and the hole as the insertion hole 8 is formed at the center position. 6a 'is provided, which relates to a chuck device.

  The chuck device according to claim 1, wherein a seal member 9 that abuts on a peripheral wall of the insertion hole 2 is provided on an outer periphery of the tool receiver 6 b.

  The chuck device according to any one of claims 1 and 2, wherein a hole 6b 'formed in the tool receiver 6b of the tool stopper 6 is larger in diameter than a hole 6a' formed in the base body 6a. The chuck device is characterized in that the adjustment tool 7 can be inserted into the insertion hole 8 from the front side of the tool stopper 6.

  The chuck device according to any one of claims 1 and 2, wherein a hole 6b 'formed in the tool receiver 6b of the tool stopper 6 is smaller in diameter than a hole 6a' formed in the base body 6a. The chuck device is configured to prevent the adjustment tool 7 inserted from the rear side of the tool stopper 6 from protruding from the front side of the tool stopper 6. Is.

Since the present invention is configured as described above, it is not necessary to make troublesome adjustments as in the past, and it is extremely practical to determine the protrusion amount of the cutting tool and improve workability very easily. the Xiu the chuck equipment.

  An embodiment of the present invention considered to be suitable will be briefly described with reference to the drawings, showing its effects.

  After the tool 1 is inserted from the tip opening 2a of the insertion hole 2 and the amount of protrusion of the tool 1 from the holder 3 is adjusted appropriately, the tool stopper 6 provided in advance in the insertion hole 2 is used as the rear surface of the tool stopper 6. Since it can be moved from the side and brought into contact with the base end surface of the tool 1, adjustment by removing the tool 1 as in the prior art becomes unnecessary, and the tool 1 can be easily set to a desired protrusion amount. (It will be a single positioning work). Therefore, the attachment of the tool 1 is extremely easy and the workability is excellent.

Therefore, the present invention does not need to repeatedly adjust the position of the tool stopper as in the prior art, and is extremely practical because it can determine the protrusion amount of the cutting tool and improve workability very easily. It was a chuck equipment.

  Specific embodiments of the present invention will be described with reference to the drawings.

  This embodiment is a chuck device for holding a tool 1, which has a holder 3 provided with an insertion hole 2 for inserting the tool 1 from a tip opening 2 a, and the tool 1 is held at the tip of the holder 3. A tool holding portion 5 is provided, a tool stopper 6 is provided in the insertion hole 2, and a fitting hole 8 is provided on the rear surface of the tool stopper 6, and the tool stopper 6 is inserted into the fitting hole 8. An appropriate adjustment tool 7 to be moved in the hole 2 is inserted.

  Specifically, the present embodiment is attached to a spindle of a machine tool such as a machine center, and employs a tool 1 having an oil passage hole 1a as the tool 1 while discharging oil from the tool 1. Processing is performed. In this embodiment, a cutting tool 1 such as a drill or an end mill is employed as the tool 1.

  Each part will be specifically described. The tool 1 is provided with an oil passage hole 1a, and the base end portion of the tool 1 is provided with a taper portion so as to be in close contact with a conical recess at the tip of a tool receiving body 6b of a tool stopper 6 described later. It has been. In addition, you may set to the curved surface-shaped round part instead of this taper part.

  The holder 3 is provided with a known chuck mechanism as a tool holding portion 5 at the tip, and a pull stud 10 is provided at the base end for pulling the holder 3 to the spindle (spindle) of the machine tool. Furthermore, the outer periphery of the base end portion of the holder 3 is formed in a tapered portion 3a that fits with the main shaft.

  The front end portion of the pull stud 10 is set to a male screw portion 10a, and the pull stud 10 is inserted by screwing the male screw portion 10a to the first female screw portion 12 provided at the base end portion of the insertion hole 2. It is fixed to the hole 2.

  In addition, an oil introduction hole 4 that communicates with the insertion hole 2 and introduces oil is provided at a substantially central portion of the pull stud 10.

  A tool stopper 6 is provided near the tip of the insertion hole 2. Specifically, the tool stopper 6 is screwed into the insertion hole 2. That is, the tool stopper 6 is configured such that the male screw portion 11 provided in the tool stopper 6 is screwed to the second female screw portion 13 provided in the insertion hole 2.

  An insertion hole 8 is provided on the rear surface of the tool stopper 6. The insertion hole 8 is configured such that an appropriate adjustment tool 7 for moving the tool stopper 6 in the insertion hole 2 is inserted. Specifically, the insertion hole 8 is a hexagon hole into which an adjustment tool 7 (for example, a hexagon wrench) such as a wrench that rotates the tool stopper 6 forward or backward as the adjustment tool 7 is inserted.

  Further, the insertion hole 8 of the tool stopper 6 also serves as an oil passage hole communicating with the oil passage hole 1 a of the tool 1. In addition, although the present Example is the structure by which the insertion hole 8 is shared by the oil passage hole, it is good also as a structure provided separately, respectively.

  The tool stopper 6 will be described in more detail. The tool stopper 6 includes a metal base 6a having a male screw portion 11 to be screwed to the second female screw portion 13 in the insertion hole 2, and a free play on the base 6a. It is formed by a metal tool receiving body 6b to be fitted, and the insertion hole 8 is configured by a hole 6a ′ (hexagonal hole) formed in the base body 6a and a hole 6b ′ of the tool receiving body 6b.

  The rear surface of the tool stopper 6, that is, the rear surface of the base 6a is formed as a conical recess, and an insertion hole 8 (hole 6a 'of the base 6a) is provided at the center position. Even when the insertion hole 8 (the hole 6a ′ of the base 6a) cannot be visually observed and the adjustment tool 7 such as a wrench cannot be guided to the insertion hole 8, the tapered surface of the conical recess serves as a guide, and the adjustment tool 7 is good. It can be inserted into the insertion hole 8. Furthermore, since the insertion hole 8 is provided at the center position of the tool stopper 6, the adjustment tool 7 can be more easily inserted.

  The adjusting tool 7 such as a wrench is inserted into the insertion hole 8 through the oil introduction hole 4 and the insertion hole 2.

  Further, the front surface of the tool receiver 6b is formed in a conical concave portion that can come into close contact with the tapered portion of the base end of the tool 1 described above. Further, a seal member 9 that abuts against the peripheral wall of the insertion hole 2 is provided on the outer periphery of the tool receiver 6b.

  The base 6a is provided with a recess 14 with a small diameter opening, while the tool receiver 6b is provided with an insertion part 15 with a large diameter at the tip inserted into the recess 14. Yes. Therefore, the tool receiver 6b can be finely moved with respect to the base body 6a.

  The insertion part 15 of the tool receiver 6b is press-fitted into the recess 14 of the base body 6a.

  Further, an O-ring 16 is provided between the bottom of the recess 14 of the base 6a and the tip of the insertion portion 15 so that the tool receiver 6b swings with respect to the base 6a as shown in FIG. Is provided.

  Further, as shown in FIG. 5, the tip of the insertion portion 15 of the tool receiver 6b is formed in a convex curve shape, while the bottom of the concave portion 14 of the base body 6a substantially matches the convex curve shape of the tool receiver 6b. It may be set so that the tool receiver 6b swings with respect to the base 6a by forming the concave curved shape. Of course, a configuration other than the configurations of FIGS. 4 and 5 may be adopted.

  Therefore, by this swinging action, the base end of the tool 1 is in good contact (contact) with the front surface of the tool receiver 6b, and the oil introduced into the insertion hole 2 through the oil introduction hole 4 of the pull stud. Passes through the fitting hole 8 formed of the hole 6a ′ of the base body 6a of the tool stopper 6 and the hole 6b ′ of the tool receiver 6b, and passes through the oil passage hole 1a of the tool 1 in which the front surface and the base end of the tool receiver 6b are in close contact. It is discharged from the tip of the tool 1 without leaking in the middle.

  In the present embodiment, the hole 6b 'formed in the tool receiver 6b is set slightly larger in diameter than the hole 6a' formed in the base body 6a. Therefore, the tool stopper 6 can be rotated forward or backward not only from the rear end side (rear surface side) of the tool stopper 6 but also from the front end side. In addition, it is possible to prevent the adjustment tool 7 from protruding from the tool stopper 6 by setting the hole 6b ′ formed in the tool receiver 6b to be smaller in diameter than the hole 6a ′ formed in the base body 6a. good.

  In this embodiment, positioning of the tool 1 and the tool stopper 6 is performed as follows.

  After the tool 1 is inserted from the tip opening 2a of the insertion hole 2 and the amount of protrusion of the tool 1 from the holder 3 is appropriately adjusted and held by the tool holding part 5, an adjustment tool 7 such as a wrench is introduced into the oil. The hole 4 and the insertion hole 2 are inserted into the insertion hole 8 of the tool stopper 6 screwed into the insertion hole 2 in advance, and the adjustment tool 7 is rotated so that the front surface of the tool stopper 6 is connected to the base end of the tool 1. The tool 1 is set on the holder 3.

  Since the present embodiment is configured as described above, after the tool 1 is inserted from the tip opening 2a of the insertion hole 2 and the amount of protrusion of the tool 1 from the holder 3 is adjusted appropriately, the tool 1 is inserted into the insertion hole 2 in advance. Since the provided tool stopper 6 can be moved from the rear surface side of the tool stopper 6 and brought into contact with the base end surface of the tool 1, there is no need for adjustment by removing the tool 1 as in the prior art. The desired amount of protrusion can be easily set (one positioning operation is sufficient). Therefore, the attachment of the tool 1 is extremely easy and the workability is excellent.

  Specifically, by forming the rear surface of the base body 6a of the tool stopper 6 in a conical recess, the position of the insertion hole 8 is not known at all when the adjustment tool 7 is inserted into the insertion hole 8. However, the tapered portion of the conical recess serves as a guide, and the adjustment tool 7 can be guided to the insertion hole 8 at the center position, so that the workability is further improved.

  In addition, the adjustment tool 7 can be inserted into the insertion hole 8 not only from the rear end side (rear side) of the tool stopper 6 but also from the front end side (front side). From this point, the workability is further improved. It will be.

  Therefore, the present embodiment does not need to repeatedly adjust the positioning of the cutting tool and the tool stopper as in the past, and it is extremely practical to determine the protrusion amount of the cutting tool and improve workability very easily. It will be excellent in nature.

It is a schematic explanatory sectional view of a conventional example. It is a schematic explanatory sectional drawing of a present Example. It is an expansion explanatory perspective view of the tool stopper of a present Example. It is expanded explanatory sectional drawing of the tool stopper of a present Example. It is expansion explanatory sectional drawing of the tool stopper of another example of a present Example.

DESCRIPTION OF SYMBOLS 1 Tool 2 Insertion hole 2a Tip opening part 3 Holder 4 Oil introduction hole 5 Tool holding part 6 Tool stopper 6a Base body 6a 'hole 6b Tool receiving body 6b' hole 7 Adjustment tool 8 Insertion hole 9 Seal member
16 O-ring

Claims (4)

  A chuck device for holding a tool, comprising: a holder provided with an insertion hole for inserting the tool from a tip opening portion; and a tool holding portion for holding the tool provided at a tip portion of the holder. An oil introduction hole communicating with the insertion hole is provided at a base end of the insertion hole, and a tool stopper is provided at the insertion hole. The tool stopper includes a base that is screwed into the insertion hole, A tool receiver having an insertion portion to be inserted into a recess provided on the tip opening side of the insertion hole, and a bottom surface of the recess of the base and a tip portion of the insertion portion of the tool receiver. An O-ring is provided between the tool holder and the tool receiver so as to be finely movable with respect to the base. Holes serving as oil passage holes are formed in the base and the tool receiver, respectively. The hole formed in the base body The tool stopper is set to an insertion hole into which an appropriate adjustment tool for rotating forward or backward in the insertion hole is inserted, and the rear surface of the base of the tool stopper is formed in a conical recess, and this center position The chuck device is characterized in that the hole as the insertion hole is provided.   The chuck device according to claim 1, wherein a seal member that abuts on a peripheral wall of the insertion hole is provided on an outer periphery of the tool receiver.   3. The chuck device according to claim 1, wherein the hole formed in the tool receiver of the tool stopper is set to be larger in diameter than the hole formed in the base, and the front surface of the tool stopper is formed. A chuck device characterized in that the adjustment tool can be inserted into the insertion hole also from the side.   3. The chuck device according to claim 1, wherein a hole formed in the tool receiver of the tool stopper is set to be smaller in diameter than a hole formed in the base, and a rear surface of the tool stopper. A chuck device configured to prevent the adjustment tool fitted from the side from protruding from the front side of the tool stopper.

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