JP4632153B2 - Tool chuck attachment / detachment device - Google Patents

Description

  The present invention relates to a tool chuck that facilitates tool replacement in a machine tool in which the number of cutting tools used, such as a machining center, is wide, and the cutting tools are frequently replaced. The present invention relates to a detachable device.

  Conventionally, the tool chuck 103 is fixed in a vise using a detachable tool 101 as shown in FIG. 9, or the tool chuck 103 is attached to a dedicated stand 105 as shown in FIG. It was. Further, the attaching / detaching tool 101 shown in FIG. 9 has a simple structure in which a locking action portion 109 curved in an arc shape is provided at the tip of the handle 107, and the locking tool provided at the tip of the locking action portion 109 is provided. The nail | claw 111 is hooked in the latching groove part 115 formed in the surrounding surface of the chuck | zipper part 113 in the tool chuck | zipper 103, and the latching action part 109 uses the handle | pattern 107 as a fulcrum using the abdominal part 117 of the inner peripheral surface in the latching action part 109. The tool chuck 103 is attached / detached by rotating the chuck portion 113 in the winding direction.

However, the tool 119 is firmly fixed to the tool chuck 103, and it is not easy to remove the tool 119 from the tool chuck 103 by using only the attaching / detaching tool 101 using the lever principle as described above. In addition, when the tool 119 is attached to the tool chuck 103, a sufficient force is not transmitted, so that the fixed state may be insufficient.
In addition, when the tool chuck 103 is fixed with a vise, there is a risk of damaging the precisely processed tool chuck 103. Therefore, it is necessary to consider a cushion material or a protective member, and the tool chuck 103 is placed in a vertical posture. The alignment is difficult, and the work is complicated and requires skill.
In addition, even when the dedicated table 105 is used, the dedicated table 105 may fall down during the operation as it is, so that it is dangerous to fix the pedestal 121 of the dedicated table 105 on the substrate 125 using the clamp 123 or the like. This is necessary and complicated.

  The present invention has been made in view of the above-described background art and the problems that the background art has, and it is possible to safely attach and detach the tool chuck with minimal force without damaging the tool chuck. It is an object of the present invention to provide a tool chuck attaching / detaching device that can be performed.

In order to solve the above-mentioned problem, the invention described in claim 1 is used for holding various tools for a machine tool and attaching them to a machining head of a machine tool. A chuck portion that is held and screw-fitted to the spindle portion, and is formed around the chuck portion and serves as a catch portion when the chuck portion is loosened from the spindle portion or when the chuck portion is tightened to the spindle portion. In a tool chuck attaching / detaching device used when a tool is removed from or attached to a tool chuck having a groove portion, a support base portion that supports the tool chuck in a vertical posture with the spindle portion down, A large gear that is provided on the support base and rotates integrally with the spindle, and a pinion that meshes with the large gear And energizing mechanisms having engagement means which functions as provided operation section relative to Ya and the pinion gear is locked in the locking groove of the chuck portion, and a detent mechanism for restricting the rotation of the chuck portion, said support The pedestal includes a lower base plate installed on the floor or on the desk, a plurality of columns raised from the lower base plate, and an upper support plate installed on the support column. wherein the large-diameter hole portion for receiving the shaft portion of the large gear, the and the small-diameter hole portion is provided for receiving the shaft portion of the pinion gear, further wherein the said lower base plate on the right under the center of the large-diameter portion and the tool A tool chuck attaching / detaching device comprising a receiving member for rotatably holding a lower end portion of a spindle portion of the chuck.

The invention described in claim 2 is used for holding various tools for a machine tool and attaching them to a machining head of a machine tool, and a spindle part mounted on the machining head, a tool holding the tool, A tool chuck having a chuck portion that is screw-fitted and a locking groove portion that is formed around the chuck portion and acts as a catch portion when the chuck portion is loosened from the spindle portion or when the chuck portion is tightened to the spindle portion In a tool chuck attaching / detaching device used when a tool is removed from or attached to a tool, a support base part that supports the tool chuck in a vertical posture with the spindle part down is provided on the support base part. A large gear that rotates integrally with the spindle unit, a pinion gear that meshes with the large gear, and a pinion gear. A boosting mechanism having an engagement means that serves as an operation unit provided Te, locked to the locking groove of the chuck portion, and a detent mechanism for restricting the rotation of the chuck portion, the boosting mechanism, the tool Centering on a holder attachment to which an engagement key that engages with an engagement recess provided in a spindle portion of the chuck and a mounting hole for mounting the holder attachment are provided, and the large gear is integrated with the holder attachment. The pinion gear includes two parts, a small-diameter pinion and a large-diameter pinion, and an upper surface of each of the two pinion gears is provided with an operation head as an engaging means, and the shaft center of each pinion gear and the operation provided thereto The tool chuck attaching / detaching device is characterized in that the axial centers of the heads coincide with each other .

According to a third aspect of the present invention, in the tool chuck attaching / detaching device according to the first or second aspect , the detent mechanism includes a support rod that is vertically raised from an upper surface of the support base, and a support rod. A shaft holder that is externally fitted and slidable along the longitudinal direction of the support rod, and a locking claw portion that is attached to the shaft holder at the base end portion and is locked to the locking groove portion of the chuck portion at the distal end portion. A tool chuck attaching / detaching device comprising a non-rotating shaft provided.

According to the tool chuck attaching / detaching apparatus of the present invention, since the tool chuck is supported by the support base having a robust structure, the tool chuck attaching / detaching operation can be performed with peace of mind. Further, by adopting a boosting mechanism using a gear train, a large torque can be easily obtained with a small force without adopting a complicated structure.
In addition, since the rotation of the chuck portion can be prevented by adopting the anti-rotation mechanism, and the tool chuck can be attached and detached by rotating the spindle portion, the possibility of the tool falling or the like can be prevented. When two types of pinion gears having different diameters are employed, the tool chuck can be attached and detached more efficiently by appropriately using the two types of pinion gears according to the progress of the operation.

Hereinafter, the tool chuck attaching / detaching device according to the present invention will be described in detail with reference to the following first and second embodiments. First, prior to the description of the present invention, an outline of the structure of the tool chuck 3 to which the present invention is applied will be briefly described.
The tool chuck 3 is a holder used for holding various tools T for cutting, grinding, polishing, etc. and attaching them to a machining head of a machine tool in various machine tools such as a machining center, a lathe, a milling machine, and a drilling machine. It is a tool.

  The tool chuck 3 includes a spindle part 5 that is a part to be mounted on a machining head of a machine tool, and a chuck part 7 that holds the tool T and is screwed to the spindle part 5. The spindle portion 5 has a constricted taper shape as shown in the figure, and a lower end portion 9 having a head portion formed at the distal end of a small-diameter shaft portion is provided as an example at the distal end. Further, as an example, a flange portion 11 having a V-shaped groove portion formed in the vicinity of the center is provided on the upper portion of the spindle portion 5, and an engaging recess cut out in a square groove shape in a part of the flange portion 11. 13 is formed.

  As an example, the chuck portion 7 is a cylindrical member with a chamfered chamfer at the tip side, and a chuck mechanism 15 is provided inside. The chuck mechanism 15 has a chuck state in which the inner diameter is expanded and contracted by adjusting the screwing of the chuck part 7 and the spindle part 5, and the tool T is strongly held when the screw is strongly screwed, and the chuck is released to remove the tool T when the screwing amount is loosened. It is set to be in a state. Further, as an example, a plurality of locking grooves 17 having an oval shape or a rectangular shape in front view are provided on the peripheral surface on the base side of the chuck portion 7, so that the chuck portion 7 can be loosened from the spindle portion 5 or the chuck portion. It acts as a catching part when 7 is fastened to the spindle part 5.

  The tool chuck attaching / detaching device 1 according to the first embodiment includes a support base portion 21 that supports the above-described tool chuck 3 in a vertical posture with the spindle portion 5 facing down as a structural member. The support base 21 is a rectangular box-shaped member whose side surfaces are opened as an example, a rectangular flat plate-like lower base plate 23 installed on the floor surface or a desk, and four corners as an example of the lower base plate 23. The four pillars 25 in the form of prisms that are raised from the top and the rectangular flat plate-like upper support plate 27 installed on the pillars 25 are fixed and assembled using bolts B or the like.

The upper support plate 27 is provided with a large-diameter hole 33 for receiving a shaft 31 of a large gear 29 described later and a small-diameter hole 39 for receiving a shaft 37 of a pinion gear 35 described later. Further, the upper surface side portions of the large diameter hole portion 33 and the small diameter hole portion 39 are further expanded in a stepped shape so that bearings C corresponding to the respective diameters are fitted into the expanded stepped portion 41. It has become.
A receiving member 43 that rotatably holds the lower end portion 9 of the spindle portion 5 in the tool chuck 3 is provided on the lower base plate 23 immediately below the center of the large-diameter hole portion 33. As an example, the receiving member 43 is a member having a stepped columnar shape in which the outer diameter of the upper part is somewhat larger than the outer diameter of the lower part, and the upper surface thereof receives the lower end part 9 to maintain the vertical posture of the tool chuck 3. A positioning hole 45 is formed.

  On the upper support plate 27, a force-increasing mechanism 49 including a large gear 29 that rotates integrally with the spindle portion 5 in the tool chuck 3 and a pinion gear 35 that meshes with the large gear 29 is provided. The force increasing mechanism 49 according to the present embodiment includes a holder attachment 51 that directly holds the spindle portion 5 in the tool chuck 3, a large gear 29 that is assembled integrally with the holder attachment 51, a small-diameter pinion 35 </ b> A that meshes with the large gear 29, and a large There are provided two pinion gears 35 having a diameter pinion 35B, and operation heads 53 as engaging means respectively provided in a state in which the shaft centers coincide with the upper surfaces of the small diameter pinion 35A and the large diameter pinion 35B.

  The holder attachment 51 includes a flange portion 57 that fits into a fitting hole portion 55 that is opened at the center of the large gear 29, and a shaft portion 59 that is formed on the lower surface side of the flange portion 57. In the flange portion 57, a step recess portion 61 is formed at a position corresponding to the engagement recess portion 13 formed on the outer peripheral surface of the flange portion 11 in the spindle portion 5 of the tool chuck 3. An engagement key 63 is attached to the step recess 61 in the holder attachment 51 so as to project inward with a bolt B. Integration of the tool chuck 3, the tool T, and the holder attachment 51 is achieved by engaging the engagement key 63 with the engagement recess 13 provided in the tool chuck 3. A mounting hole 65 through which the bolt B passes is formed in the bottom surface of the step recess 61.

As an example, two engagement recesses 67 cut out in a rectangular shape are provided on the outer peripheral surface of the flange portion 57 in the holder attachment 51. The holder attachment 51 and the large gear 29 are integrated with each other by inserting a key 70 between the engagement recesses 69 that are also formed at two positions in the stepped portion 56 of the fitting hole 55 of the large gear 29. It is planned.
A receiving hole 71 for receiving the spindle portion 5 of the tool chuck 3 is provided at the center of the shaft portion 59 of the holder attachment 51. The inner diameter of the receiving hole portion 71 is formed to be somewhat larger than the outer diameter of the spindle portion 5, so that the spindle portion 5 is prevented from coming into close contact with the receiving hole portion 71 and the tool chuck 3 is removed from the holder attachment 51. Making it easy.

  As shown in FIGS. 3 and 4, the large gear 29 is a large-diameter gear having about 80 teeth as an example provided at substantially the center of the upper support plate 27. The above-described fitting hole 55 is formed at the center of the large gear 29, and the above-described holder attachment 51 is attached to the step portion 56 of the fitting hole 55. A bearing C having a predetermined size is provided in a space between the shaft portion 31 formed on the lower surface side of the large gear 29 and the step portion 41 of the large-diameter hole portion 33 formed in the upper support plate 27. It fits inside.

As shown in FIGS. 3 and 4, the small-diameter pinion 35 </ b> A is a small-diameter pinion gear having, for example, about 20 teeth positioned diagonally to the left of the large gear 29. A through hole 73 is formed in the center of the shaft portion 37 of the small-diameter pinion 35A. An extension rod 75 extending downward in the vertical direction is formed in the through hole 73, and the operation head 53 is raised so as to be raised upward. Is provided.
The lower end portion of the extension rod 75 is rotatably supported by a bearing C that is fitted in a recessed portion 77 formed in the lower base plate 23. Further, the operation head 53 has a hexagonal column shape as an example, and is set to a size that allows a commercially available ratchet tool R to be used.

As shown in FIGS. 3 and 4, the large-diameter pinion 35 </ b> B is a pinion gear having a larger diameter than the small-diameter pinion 35 </ b> A having about 30 teeth as an example, which is positioned diagonally right front of the large gear 29. A through-hole 73 is also formed at the center of the shaft portion 37 of the large-diameter pinion 35B. Like the small-diameter pinion 35A, an extension rod 75 extending downward in the vertical direction and an upward rise are provided in the through-hole 73. Thus, the operation head 53 having the same diameter and the same size as that provided for the small-diameter pinion 35A is provided.
Accordingly, when using the small-diameter pinion 35A and when using the large-diameter pinion 35B, the reduction ratio with respect to the large gear 29 is different. When the large gear 29 is to be rotated many times at once, the large-diameter pinion 35B is used. When the selection is made and the large gear 29 is to be rotated more finely, the small-diameter pinion 35A is selected so that the pinion gear 35 is selectively used.

  Further, as shown in FIGS. 3 and 4, the detent mechanism 81 is slid along the longitudinal direction of the support rod 83, which is vertically raised from the upper support plate 27 on the back side of the large gear 29. A movable shaft holder 85 and a detent shaft 87 attached to the shaft holder 85 are provided. The support rod 83 is a member having a round bar shape, and a guide groove 89 formed in a spiral shape is formed on the peripheral surface thereof. The height of the support rod 83 is set to a height corresponding to the height of the chuck portion 7 of various types of tool chucks 3.

The shaft holder 85 is a disk-shaped member as an example, and a slidable contact hole 91 that fits around the support rod 83 is formed in the center thereof so as to penetrate in the axial direction. A guide rib (not shown) that engages with a guide groove 89 formed on the outer peripheral surface of the support rod 83 is provided on the inner peripheral surface of the sliding contact hole portion 91, and the shaft holder 85 is rotated by rotating the shaft holder 85. The support rod 83 can be moved while being spirally rotated up and down along the longitudinal direction of the support rod 83.
Further, the shaft holder 85 is provided with a sleeve-like mounting socket portion 93. The base end portion of the non-rotating shaft 87 is fitted into the mounting socket portion 93, and the shaft holder 85 is rotated around the shaft holder 85 using a bolt B or the like. A stop shaft 87 is fixed.

The non-rotating shaft 87 is a member having a round bar shape smaller in diameter than the support rod 83, and a portion near the tip thereof is somewhat reduced in diameter, and a head is formed at the tip of the reduced diameter portion. Further, the corner ridge portion inside the head is a locking claw portion 95. The locking claw 95 is locked by being hooked on a locking groove 17 formed on the outer peripheral surface of the chuck portion 7 of the tool chuck 3.
When the tool chuck 3 is loosened, the direction of action of the detent shaft 87 with respect to the chuck portion 7 of the tool chuck 3 is from the left side as shown in FIG. 3, and when the tool chuck 3 is tightened, from the right side as shown in FIG. It is set to work. By setting in this way, the detent shaft 87 is always subjected to a pressing force toward the support rod 83.

  In addition, a cover 99 as shown by phantom lines in FIGS. 1 and 5 is provided on the upper support plate 27 so as to cover the force-increasing mechanism 49. Note that a hole 97 for avoiding interference with the support rod 83 and an opening 98 that allows the tool chuck 3 to be attached to and detached from the holder attachment 51 are formed on the upper surface of the cover 99.

Next, the operation procedure and operation mode when (1) the tool chuck 3 is loosened and (2) the tool chuck 3 is tightened using the tool chuck attaching / detaching device 1 of the present invention thus configured will be described. To do.
(1) When loosening the tool chuck 3 (see Fig. 3)
The tool chuck 3 with the tool T attached is inserted into the receiving hole 71 of the holder attachment 51 from above, and the engagement recess 13 on the tool chuck 3 side is aligned with the engagement key 63. Set.

Next, after adjusting the height of the shaft holder 85 according to the height of the chuck portion 7, the non-rotating shaft 87 acts on the chuck portion 7 of the tool chuck 3 from the left as shown in FIG. Then, the locking claw 95 at the tip is hooked on the locking groove 17 to be locked. In this state, when the ratchet tool R is used to engage the operating head 53 provided on the upper surface of the pinion gear 35 and the pinion gear 35 is rotated counterclockwise, the large gear 29 engaged therewith rotates clockwise. To do.
In this state, the spindle portion 5 and the chuck portion 7 are firmly tightened, so they try to rotate together. Accordingly, the chuck portion 7 tries to rotate in the clockwise direction and pushes the detent shaft 87 into the support rod 83 side.

However, since the base end portion of the rotation prevention shaft 87 is fixed by the shaft holder 85 and the movement of the rotation prevention shaft 87 toward the support rod 83 is prevented by the support rod 83, the chuck portion 7 rotates. I can't.
Accordingly, the tool chuck 3 is loosened by an amount corresponding to the rotation amount of the spindle portion 5, and in the same manner, the ratchet tool R is used in the counterclockwise direction using the ratchet tool R while selectively using the small diameter pinion 35A and the large diameter pinion 35B. By repeating this rotation, the chuck state of the tool T by the tool chuck 3 is released, and the tool T can be replaced.

(2) When tightening the tool chuck 3 (see FIG. 4)
In this case, the tool T to be used is mounted inside the chuck mechanism 15 in the loosened state, and the tool chuck 3 to which the tool T is mounted is inserted into the receiving hole portion 71 of the holder attachment 51 from above, and the tool chuck 3 The engagement recess 13 on the side is set so as to be engaged with the engagement key 63.
Next, after adjusting the height of the shaft holder 85 according to the height of the chuck portion 7, the non-rotating shaft 87 acts on the chuck portion 7 of the tool chuck 3 from the right as shown in FIG. 4. Then, the locking claw 95 at the tip is hooked on the locking groove 17 to be locked.

In this state, when the ratchet tool R is used to engage the operating head 53 provided on the upper surface of the pinion gear 35 and the pinion gear 35 is rotated clockwise, the large gear 29 meshing with it rotates counterclockwise. To do.
In this state, the spindle unit 5 and the chuck unit 7 are in a loosened state, and the chuck unit 7 pushes the detent shaft 87 toward the support rod 83 in an attempt to rotate counterclockwise as the spindle unit 5 rotates. Try to include.

However, since the base end portion of the rotation prevention shaft 87 is fixed by the shaft holder 85 and the movement of the rotation prevention shaft 87 toward the support rod 83 is prevented by the support rod 83, the chuck portion 7 rotates. I can't.
Accordingly, the spindle portion 5 is gradually tightened against the chuck portion 7 in the state of being prevented from being rotated by the rotation preventing mechanism 81, and the ratchet tool R is used while using the small diameter pinion 35A and the large diameter pinion 35B in the same manner. Then, by repeating the rotation of the operation head 53 in the clockwise direction, the chuck state of the tool T by the tool chuck 3 is formed, and the fixing of the tool T is completed.

Next, the tool chuck attaching / detaching device 2 according to Embodiment 2 will be described.
Since the basic configuration of the tool chuck attaching / detaching device 2 is the same as that of the tool chuck attaching / detaching device 1 according to the first embodiment, the tool chuck attaching / detaching device 2 is different from the tool chuck attaching / detaching device 1 here. The description will focus on the specific configuration.
The same reference numerals as those used in the description of the tool chuck attaching / detaching device 1 described above are used for the same configuration as that of the tool chuck attaching / detaching device 1, and new symbols are used for the unique configuration of the tool chuck attaching / detaching device 2. A configuration of the tool chuck attaching / detaching device 2 will be described.

The tool chuck attaching / detaching device 2 includes the support base 21, the force-increasing mechanism 49, and the anti-rotation mechanism 82, similarly to the tool chuck attaching / detaching device 1 described above. The structure of the rotation prevention mechanism 82 is slightly different from that of the rotation prevention mechanism 81 of the tool chuck attaching / detaching device 1.
As shown in FIGS. 6 to 8, the detent mechanism 82 includes a support rod 83 provided in a vertical posture on the back side of the large gear 29, and a shaft holder 85 that can move up and down along the longitudinal direction of the support rod 83. A detent shaft 87 attached so as to project in the horizontal direction with respect to the shaft holder 85, a slider 201 that can move up and down integrally with the shaft holder 85, and an intermediate between the shaft holder 85 and the slider 201. The guide rod 203 is provided, and a rotation restricting plate 205 that prevents the slider 201 from rotating.

The support rod 83 is a member having a round bar shape, and a guide groove 89 formed in a spiral shape is formed on the outer peripheral surface of the lower portion thereof. The lower end of the support rod 83 is rotatably fitted in a fitting recess 207 formed on the upper surface of the lower base plate 23.
The support rod 83 passes through a fitting hole 209 formed in the upper support plate 27 and extends further upward. An operation handle 211 is operated at the upper end of the support rod 83 when the support rod 83 is rotated. Is provided.
Further, the height of the shaft holder 85 or the non-rotating shaft 87 from the upper surface of the upper support plate 27 is set to a height corresponding to the height of the chuck portion 7 of various types of tool chucks 3.

As an example, the shaft holder 85 is a member having a somewhat thick disk shape or a short cylindrical shape, and a sliding contact hole portion 91 fitted around the support rod 83 is penetrated in the axial direction at the center thereof. Is formed.
A mounting hole 215 for mounting the base portion 213 of the non-rotating shaft 87 is engraved in the peripheral body portion of the shaft holder 85 in the horizontal direction.

The non-rotating shaft 87 is a member having a round bar shape smaller in diameter than the support rod 83, and a portion near the tip thereof is somewhat reduced in diameter, and a head is formed at the tip of the reduced diameter portion. Further, a corner ridge portion on the inner side of the head is a locking claw portion 95, and is locked by being hooked on a locking groove portion 17 formed on the outer peripheral surface of the chuck portion 7 of the tool chuck 3. ing.
Further, the base portion 213 of the non-rotating shaft 87 is also reduced in a stepped shape, and the reduced diameter base portion 213 is fitted and fixed in the mounting hole 215 of the shaft holder 85 described above.

The slider 201 is a stepped disk-like member having a large diameter portion and a small diameter portion, and a sliding contact hole portion 217 that fits outside the support rod 83 is formed in the center thereof so as to penetrate in the axial direction.
Further, a part of the outer peripheral portion of the slider 201 is cut off vertically to form a sliding contact smooth surface 219 that comes into sliding contact with a rotation restricting plate 205 described later.
In addition, two receiving recesses 221 for receiving the lower end portion of the guide rod 203 are provided on the upper surface of the slider 201 on both sides of the sliding contact hole portion 217.

A screw hole 223 is engraved on the outer peripheral surface of the slider 201 opposite to the surface on which the sliding contact smooth surface 219 is formed so as to reach the sliding contact hole portion 217 penetrating the center.
A fixing bolt 227 having a guide pin 225 formed at the tip thereof is screwed into the screw hole 223, and the fixing bolt 227 is fixed to the slider 201 in a loosened state using a fixing nut 229.
The guide pin 225 is attached so as to protrude somewhat from the inner peripheral surface of the sliding contact hole portion 217, and engages with a guide groove 89 formed on the outer peripheral surface of the lower portion of the support rod 83. .

The guide rod 203 is a round bar-like member, and the lower end portion 231 is slightly reduced in diameter although not shown in the figure, and is fitted into a receiving recess 221 provided on the upper surface of the slider 201.
The upper end portion 233 of the guide rod 203 is greatly reduced in the shape of a stepped bar, passes through the guide hole 235 formed in the left and right upper support plates 27 with the fitting hole 209 interposed therebetween, and above it. It engages with an engagement hole 237 formed on the lower surface of the shaft holder 85 positioned.

Two engagement hole portions 237 are provided on the left and right sides of the sliding contact hole portion 91 passing through the center of the shaft holder 85, and the inner diameter thereof is larger than the outer diameter of the upper end portion 233 of the guide rod 203. Is formed.
In addition to the upper end 233 of the guide rod 203, a compression coil spring 239 that is externally fitted to the upper end 233 is accommodated in the engagement hole 237 in a contracted state. Further, a gap of a predetermined height is formed between the end surface of the upper end portion 233 of the guide rod 203 and the bottom surface located above the engagement hole portion 237, and the work can be performed within the range of the height dimension of the gap. A small amount of up-and-down movement of the detent shaft 87 occurring inside can be dealt with.

The rotation restricting plate 205 is a long rectangular flat plate member, and four mounting holes 241 are formed in the upper and lower portions as an example, and the lower base plate 23 and the upper support plate 27 are formed using bolts B. It is attached to the fixed state.
The rotation restricting plate 205 is provided with the above-mentioned sliding contact smooth surface 219 of the slider 201 in a contact state or in an extremely close state, and the support rod 83 is rotated in a predetermined direction by holding the operation handle 211. The rotation-controlled slider 201 can move up and down along the support rod 83.

As mentioned above, the best mode for carrying out the present invention and the embodiment thereof have been described in detail, but the specific configuration is not limited to these embodiments, and the scope of the present invention is not deviated. Any change in design in the above is also included in the present invention.
For example, in addition to providing two pinion gears 35 with the same number of teeth, two pinion gears 35 having the same number of teeth may be provided so that both left-handed workers and right-handed workers can be supported. Only one pinion gear 35 may be provided, or a further pinion gear 35 may be added. The gear ratio between the large gear 29 and the small-diameter pinion 35A, or the large gear 29 and the large-diameter pinion 35B can be variously changed, and a gear train with a larger gear ratio can be adopted by adding more gears. .

In addition, when the horizontal posture of the small-diameter pinion 35A can be maintained only by the shaft portion 37 and can cope with the large torque related to the small-diameter pinion 35A, the extension rod 75 provided below the small-diameter pinion 35A and the large-diameter pinion 35B is omitted. It is also possible.
It is also possible to use the detent shaft 87 in the pulling direction (direction away from the support rod 83) by devising the shape or the like of the locking claw portion 95. In this way, it is possible to save the trouble of switching the operation direction of the detent shaft 87 one by one depending on whether the tool chuck 3 is loosened or tightened.

It is a perspective view which shows the use condition of the attachment or detachment apparatus of the tool chuck which concerns on Embodiment 1 of this invention. It is a perspective view which decomposes | disassembles and shows the attachment / detachment apparatus of the tool chuck which concerns on Embodiment 1 of this invention. It is a top view which shows the operation | movement aspect in the case of loosening the tool chuck of the attachment or detachment apparatus of the tool chuck which concerns on Embodiment 1 of this invention. It is a top view which shows the operation | movement aspect in the case of tightening the tool chuck of the attachment or detachment apparatus of the tool chuck which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the state fractured | ruptured by the AA line in FIG. It is a perspective view which shows the use condition of the attachment or detachment apparatus of the tool chuck which concerns on Embodiment 2 of this invention. It is a perspective view which decomposes | disassembles and shows the rotation prevention mechanism in the attachment or detachment apparatus of the tool chuck which concerns on Embodiment 2 of this invention. It is a vertical rear view of the periphery of the detent mechanism in the tool chuck attaching / detaching device according to Embodiment 2 of the present invention. It is a top view which shows the use condition of the conventional attachment / detachment tool used for attachment / detachment of a tool chuck. It is a perspective view which shows the use condition of the stand for exclusive use of the conventional tool chuck used for attachment or detachment of a tool chuck.

Explanation of symbols

1 Tool chuck attachment / detachment device (Embodiment 1)
2 Tool chuck attachment / detachment device (Embodiment 2) 3 Tool chuck 5 Spindle part 7 Chuck part 9 Lower end part 11 Flange part (of tool chuck)
Reference Signs List 13 engagement recess (tool chuck) 15 chuck mechanism 17 locking groove 21 support base 23 lower base plate 25 support 27 upper support plate 29 large gear 31 shaft (large gear) 33 large diameter hole 35 pinion gear 35A small diameter Pinion 35B Large-diameter pinion 37 Shaft (pinion gear) 39 Small-diameter hole 41 Stepped portion 43 Receiving member 45 Positioning hole 49 Booster mechanism 51 Holder attachment 53 Operating head (engaging means)
55 Fitting hole (for large gear) 56 Stepped portion 57 Flange (for holder attachment)
59 Shaft (for holder attachment)
61 Step recess (for holder attachment) 63 Engagement key 65 Mounting hole 67 Engagement recess (for holder attachment)
69 Engaging recess (Large gear) 70 Key 71 Receiving hole (Holder attachment)
73 Through-hole (for pinion gear) 75 Extension rod 77 Recessed portion 81 Anti-rotation mechanism (Embodiment 1) 82 Anti-rotation mechanism (Embodiment 2)
83 Support rod 85 Shaft holder 87 Non-rotating shaft 89 Guide groove 91 Sliding contact hole 93 Mounting socket 95 Locking claw 97 Hole 98 Open 99 Cover 201 Slider 203 Guide rod 205 Rotation restricting plate 207 Fitting recess 209 Fitting Hole 211 Operation handle 213 Base 215 Mounting hole 217 Sliding contact hole 219 Sliding contact smooth surface 221 Receiving recess 223 Screw hole 225 Guide pin 227 Fixing bolt 229 Fixing nut 231 Lower end 233 Upper end 235 Guide hole 237 Engaging hole 239 Compression Coil spring 241 Mounting hole T Tool B Bolt C Bearing R Ratchet tool

Claims (3)

A spindle unit that is used to hold and attach various tools for machine tools to a machining head of a machine tool, and a chuck unit that is attached to the machining head and that holds a tool and is screwed to the spindle unit. The tool is removed from or attached to the tool chuck that is formed around the chuck portion and has a locking groove portion that acts as a catch portion when the chuck portion is loosened from the spindle portion or when the chuck portion is tightened to the spindle portion. In a tool chuck attaching / detaching device used at the time, a support base part supporting the tool chuck in a vertical posture with the spindle part down, and a support base part provided on the support base part and rotating integrally with the spindle part Large gears, pinion gears meshing with the large gears, and as a control unit provided for the pinion gears A boosting mechanism having an engaging means for, locked to the locking groove of the chuck portion, and a detent mechanism for restricting the rotation of the chuck portion,
The support base includes a lower base plate installed on a floor surface or a desk, a plurality of support columns raised from the lower base plate, and an upper support plate installed on the support column. Is provided with a large-diameter hole portion for receiving the shaft portion of the large gear and a small-diameter hole portion for receiving the shaft portion of the pinion gear, and on the lower base plate just below the center of the large-diameter hole portion. A tool chuck attaching / detaching device, wherein a receiving member for rotatably holding a lower end portion of a spindle portion in the tool chuck is provided . A spindle unit that is used to hold and attach various tools for machine tools to a machining head of a machine tool, and a chuck unit that is attached to the machining head and that holds a tool and is screwed to the spindle unit. The tool is removed from or attached to the tool chuck that is formed around the chuck portion and has a locking groove portion that acts as a catch portion when the chuck portion is loosened from the spindle portion or when the chuck portion is tightened to the spindle portion. In a tool chuck attaching / detaching device used at the time, a support base part supporting the tool chuck in a vertical posture with the spindle part down, and a support base part provided on the support base part and rotating integrally with the spindle part Large gears, pinion gears meshing with the large gears, and as a control unit provided for the pinion gears A boosting mechanism having an engaging means for, locked to the locking groove of the chuck portion, and a detent mechanism for restricting the rotation of the chuck portion,
The force-increasing mechanism includes a holder attachment to which an engagement key that engages with an engagement recess provided in a spindle portion of the tool chuck, and a mounting hole portion in which the holder attachment is mounted, and the large gear. Is integrally assembled with the holder attachment, the pinion gear includes two small-diameter pinions and a large-diameter pinion, and the upper surface of each of the two pinion gears is provided with an operating head as an engaging means, respectively. A tool chuck attaching / detaching device characterized in that the center and the axis center of an operating head provided in the center coincide with each other . 3. The tool chuck attaching / detaching device according to claim 1, wherein the anti-rotation mechanism includes a support rod that is vertically raised from the upper surface of the support base, and is externally fitted to the support rod. A shaft holder that is slidable along the shaft, and a non-rotating shaft having a base end portion attached to the shaft holder and a locking claw portion that is locked to the locking groove portion of the chuck portion at the distal end portion. attachment apparatus of tool chuck, characterized in that it comprises.

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