JP5430541B2 - Tool pot - Google Patents

Description

  The present invention relates to a tool pot used in an automatic tool changer installed in a machine tool such as a machining center, and more particularly to a tool pot mounted on a circulating endless chain-shaped tool magazine such as an ATC chain. It is related with the tool pot which hold | maintains detachably.

Conventionally, as an example of the tool pot 500 that holds the tool holder TH, the outer periphery is tapered and has a hollow shank portion S, and a long groove-like ball engaging portion is formed at the substantially central portion of the inner periphery of the shank portion S. In the tool pot 500 for holding the tool holder TH of the tool having a tapered cam surface formed on the rear end side of the ball engaging portion, a hollow cylindrical tool pot main body 510 having a flange 511 at the front end portion; A ball holding member 531 incorporated and fixed in the tool pot main body 510, a plurality of balls 532 held by the ball holding member 531, and a ball holder 531 which is slid in the axial direction and tapered toward the tip side. A slide pin 533 having a clamp cam portion 533a, a spring 534 for biasing the slide pin 533 rearward, and a flange 511 of the tool pot main body 510. Front end tool pot 500 formed of a synthetic resin sealing member 512. the attached ring, there are (see FIGS. 6 and 7).
More specifically, a V groove is formed on the outer periphery of the flange of the tool holder TH described above, and a cutting blade such as a drill (not shown) is attached to the front of the flange. The ball holding member 531 has a small-diameter and hollow small-diameter cylindrical portion 531b protruding toward the front end side, and the outer peripheral surface of the small-diameter cylindrical portion 531b is a guide surface for guiding the engagement hole of the tool holder TH. The small-diameter cylindrical portion 531b is formed with a plurality of ball projecting holes 531d projecting the balls 532 in the radial direction. Each ball protruding hole 531d is formed so that the outer diameter of each ball protruding hole 531d is slightly smaller than the diameter of the ball 532 in order to prevent each ball 532 from jumping out from the outer periphery of the small diameter cylindrical portion 531b. ing. In addition, said slide pin 533 is comprised from two members, a slide pin axial part and a front-end | tip member, and these slide pin axial parts and front-end | tip members are connected with the volt | bolt (for example, refer patent document 1). .

Japanese Patent Laid-Open No. 8-257861 (full text, all figures) JP 2008-36780 A (full text, full diagram)

As shown in FIGS. 6 and 7, conventionally, when the tool pot body 510 and the ball holding member 531 are positioned and fixed, a locking pin insertion hole 515 is provided on the side surface of the tool pot body 510, and the ball holding member 531. The locking pin insertion holes 533 are respectively perforated, and the ball holding member 531 is inserted into the tool pot main body 510 until it comes into contact with the locking step portion 520, and the locking pin insertion hole 515 and the locking pin insertion hole are inserted. After positioning 533 in the circumferential direction, a positioning pin such as a spring pin is driven to fix the tool pot main body 510 and the tool holder 530 so as not to move relative to each other in the axial direction and the circumferential direction.
In the operation of incorporating such a ball holding member 531 into the tool pot main body 510, the locking pin insertion hole 533 of the ball holding member 531 located in the tool pot main body 510 cannot be seen from the outside. The alignment is performed by looking into the locking pin insertion hole 515 provided in the main body 510 and confirming the position of the locking pin insertion hole 533. However, such an operation to look into the small hole by looking through the small hole is a cumbersome task that requires concentration and requires the skill of the worker, so that the work can be performed smoothly in the assembly work of the tool pot body. It became a major factor that hindered the problem.

Further, in the operation of drilling the engagement pin insertion hole 515 and the engagement pin insertion hole 533, a positional deviation is required for drilling so that both holes have a small diameter and communicate with each other in an appropriate positional relationship. However, the tolerance range is small, and high precision machining is required for drilling.
In addition, the locking pin insertion hole 515 and the locking pin insertion hole 533 are usually perforated at two positions with an angle of 120 ° in the circumferential direction, and one side of the two pairs of holes. In this state, the locking pin 570 can be driven with respect to this portion. Therefore, when one locking pin 570 is driven, a misalignment may be noticed. However, it is not easy to take out the locking pin 570 once driven, and there is a problem that it becomes an obstacle to smooth execution of work.

Further, since the operation of driving the locking pin 570 is performed with a hammer manually, the person's hand is accidentally injured in the driving operation, or the tool pot body 510 is hit and damaged. The operation of driving the locking pin 570 requires a skillful technique and needs to be carried out with sufficient care. Therefore, there is a problem that the work may become a bottleneck in the entire assembling work. there were.
In addition, since a pin having a relatively low strength called a spring pin is used as the locking pin 570 as in the prior art, the spring pin becomes a tool in combination with the relatively thin thickness of the tool pot body 510. If the ball does not stay in the locking pin insertion hole 515 of the pot body 570 but falls into the locking pin insertion hole 533 of the ball holding member 531, the ball holding member 531 rotates relative to the inside of the tool pot body 510. There is a problem that the removal of the tool is hindered and the tool pot 500 is no longer used.

  Then, because of the above problems, when the locking pin 570 is driven into the wrong position during the creation of the tool pot 500, the locking pin falls, the tool pot main body 510 is damaged, etc. There is a problem that the tool pot 500 becomes unusable before being used, and as a result, the entire tool pot 500 being created may be discarded.

Thus, the present invention solves the problems of the prior art , that is, the object of the present invention is to provide a positioning member without strictly aligning the tool holder with respect to the tool pot body in the circumferential direction. positioning the tool holder to the tool pot body is guided to a desired position by using, it is to provide a tool pot in which the positioning strength increases with more simplify the embedder.

The invention according to claim 1 is a cylindrical tool pot main body that accommodates the shank portion of the tool, and is coaxially mounted in the tool pot main body, and is engaged with and disengaged from the shank portion of the tool to hold the tool removably. in the tool pot comprising a cylindrical tool holder, the holding flange which partially projecting from the inner peripheral surface of the tool pot body to form the inner positioning grooves for locking the front end of the tool holder If, and interposed between said tool holder and a positioning portion which is located on the outer peripheral surface is formed opposite to said inner positioning groove of the tool pot positioning of the inner positioning groove and the tool holder body and a positioning member for disabling the relative rotation between the tool pot body and the tool holder Te, the problems by chamfered portions for the front end and narrow at the front end portion of the positioning member is formed It has been solved.

  In addition to the structure of the invention according to claim 1, the tool pot of the invention according to claim 2 has a retaining ring groove in which the tool pot body fits a retaining ring that engages the rear end of the tool holder. It is formed on the inner peripheral surface, and the tool holder cannot be moved in the axial direction by a locking collar formed on the inner peripheral surface of the tool pot body and a retaining ring fitted in the retaining ring groove. By being fixed, the above-described problems are further solved.

  In addition to the configuration of the invention according to claim 1 or claim 2, the tool pot of the invention according to claim 3 includes a plurality of tools that hold the tool by projecting against the inner peripheral surface of the shank portion of the tool. A ball holder for loosely fitting and holding the balls in the radial direction; a slide pin that is slidably inserted in the ball holder in the axial direction and is urged backward by an axial coil spring; and a tip of the slide pin A clamp cam portion that comes into contact with the ball by retraction of the slide pin and engages the ball with a ball engagement portion on the inner peripheral surface of the shank portion of the tool; The above-described problem is further solved by providing a ball housing gap portion that separates and retains the ball from the ball engaging portion.

  In addition to the structure of the invention according to any one of claims 1 to 3, the tool pot of the invention according to claim 4 has an end on the front end side, which is the side on which the shank portion of the tool is brought close. An annular end seal member having a flange portion attached to an end portion on the front end side of the end flange portion, and an annular side portion on the inner peripheral surface of the tool pot body. By attaching the seal member, the above-described problems are further solved.

In addition to the structure of the invention according to any one of claims 1 to 4, the tool pot of the invention according to claim 5 is characterized in that an inner positioning groove formed in the locking collar is a front end portion of the tool pot body. The above-described problems are further solved by forming the outer positioning groove formed in the end flange portion formed in the back-to-back position when viewed from the axial direction .

According to the present invention according to claim 1, into a cylindrical tool pot body and the tool pot body mounted coaxially tool disengages the shank portion of the tool housing the shank portion of the tool removably In a tool pot having a cylindrical tool holder for holding, a locking hook portion protruding from the inner peripheral surface of the tool pot main body and forming an inner positioning groove in a part to lock the front end of the tool holder When the tool holder and interposed between the positioning part formed to face inward positioning groove located on the outer peripheral surface of the tool holder, the positioning of the inner positioning groove and the tool holder of the tool pot body By incorporating a positioning member that disables relative rotation between the body and the tool pot body, the assembly work of the tool pot body and the tool holder by driving a locking pin that requires highly precise and skilled skills is possible. Position as unnecessary The tool member to the tool pot main body is made incapable of relative movement in the circumferential direction simply by inserting the female member between the inner positioning groove of the locking projection provided on the tool pot main body and the positioning portion of the tool holder. The positioning and assembling work of the holding body can be made much simpler than before, and by eliminating the need for the driving work, accidents such as injuries and damage to the tool pot body can be eliminated. In addition, since the insertion position of the positioning member is uniquely determined, it is possible to provide a high-strength and easy-to-assemble tool pot that is free from the risk of erroneous mounting or the locking pin falling. .
In addition, since the chamfered portion having a narrow tip is formed at the front end portion of the positioning member, the tool holder can be positioned without strictly aligning the tool holder with the tool pot body in the circumferential direction. Since the positioning member is guided by the narrow chamfered portion and aligned at a desired position in the inner positioning groove, the tool pot The work of assembling the tool holder into the main body can be further simplified.

  According to the tool pot of the present invention according to claim 2, in addition to the effect produced by the invention according to claim 1, the snap ring groove into which the tool pot body fits the snap ring for locking the rear end of the tool holder. The tool holder is made non-slidable in the axial direction by a locking collar projecting from the inner peripheral surface of the tool pot body and a retaining ring fitted in the retaining ring groove. Since the tool holder is fixed with high stability so that it cannot be moved relative to the axial direction by the retaining ring, the tool can be stably held in the tool pot. The tool can be inserted and removed reliably.

  According to the tool pot of the present invention according to claim 3, in addition to the effect produced by the invention according to claim 1 or claim 2, the tool holder holds the tool by contacting the shank portion inner peripheral surface of the tool. A ball holder that loosely holds a plurality of balls in the radial direction, a slide pin that is slidably inserted in the ball holder in the axial direction and is urged backward by an axial coil spring, and a tip of the slide pin A clamp cam portion that is in contact with the ball by retraction of the slide pin and engages the ball with the ball engagement portion of the inner peripheral surface of the tool shank, and the clamp cam portion is separated from the ball by the advance of the slide pin By providing a ball-accommodating clearance portion that retracts and holds the ball from the ball engaging portion, the ball is protruded or fitted in the radial direction by sliding in the axial direction of the slide pin. A tool holder that holds the shank part of the tool holder is incorporated into the tool pot body as a unit, and the tool is mounted and held in the tool pot with the slide pin retracted by a spring. Since the tool can be inserted and removed from the tool pot by moving forward, the tool can be securely clamped and unclamped, and the tool can be securely inserted and removed from the tool pot without changing the tool. In addition, the tool holder can be easily incorporated as an integral unit.

  According to the tool pot of the present invention according to claim 4, in addition to the effect produced by the invention according to any of claims 1 to 3, the front end side on which the tool pot body is the side on which the shank portion of the tool is brought close An end flange portion is attached to the front end side of the end flange portion, and an annular end seal member having a flange portion is attached to the inner peripheral surface of the tool pot body. Because the shank part of the tool holder is supported by the annular end seal member, the annular side seal member, and the ball, the tool holder is tilted in parallel with the axis without tilting the tool holder. Can be held stably, and the tool can be changed without the tool falling off.

According to the tool pot of the present invention according to claim 5, in addition to the effect produced by the invention according to any one of claims 1 to 4, the inner positioning groove formed in the locking collar is provided on the tool pot body. The outer positioning groove formed in the end flange portion formed in the front end portion and the outer positioning groove formed in a back-to-back position when viewed from the axial direction, the two positioning grooves are coaxially and substantially parallel to each other, and the cutting tool Are inserted from the same direction for cutting, so that the two grooving processes can be simplified in the manufacturing process of the tool pot body.

The (a) front view and (b) side sectional view of the tool pot of the 1st example. The partial cross section perspective view of the tool pot shown in FIG. The partial cross section perspective view of the tool pot main body of the tool pot shown in FIG. The partial cross section perspective view of the tool holder of the tool pot shown in FIG. The perspective view of the positioning member of the tool pot shown in FIG. The perspective view of the tool pot of a prior art. FIG. 7 is a side sectional view of the tool pot shown in FIG. 6.

The present invention includes a cylindrical tool holding for holding the tool disengages mounted coaxially on a cylindrical tool pot body and the tool pot body housing the shank portion of the tool shank of the tool removably in the tool pot and a body, and the locking flange portion for engaging the front end of the tool holder by forming the inner positioning groove part provided to protrude on the inner peripheral surface of the tool pot body, the outer periphery of the tool holder a positioning portion formed to face inward positioning groove located in the plane, and the tool holder and the tool pot body and interposed between the positioning portion of the inner positioning groove and the tool holder of the tool pot body and a positioning member for disabling relative rotation, chamfered portions are formed to narrow the tip to the front end portion of the positioning member, not precisely aligned with the tool holder in the circumferential direction with respect to the tool pot body both, child use positioning member Positioning the tool holder to the guide to the tool pot body in the desired position by, as long as it increases the positioning strength as well as more easily the embedder, specific embodiments thereof are any be any one I do not care.

  That is, the tool pot may be an endless chain shape in which a connecting pin that connects the outer link and the inner link of the chain is a hollow pin, and the tool pot is mounted in the hollow connecting pin, or a pair of outer chains of the roller chain. The link may be extended to one side, and the tool pot may be inserted and supported in an insertion hole extending through the extended outer link, or the tool may be placed on the outer periphery of a disk-shaped table. It does not matter if the pots are arranged side by side.

  The tool support may be such that the ball is pressed against and abutted against the inner peripheral side of the shank portion of the tool holder to hold the tool, and the outer periphery of the pull stud portion at the tip of the tool shank portion. The tool may be held by pressing and abutting a gripping claw or a ball against the tool.

  In addition, a locking mechanism for locking or unlocking the forward and backward movement of the slide pin may be provided on the rear end side of the slide pin.

Hereinafter, a tool pot according to an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1A is a front view of the tool pot 100 of one embodiment, FIG. 1B is a side sectional view of the same, and FIG. 2 is a partial cross section of the tool pot 100 shown in FIG. FIG. 3 is a partial cross-sectional perspective view of the tool pot body 110 of the tool pot 100 shown in FIG. 1, and FIG. 4 is a partial cross-sectional view of the tool holder 130 of the tool pot 100 shown in FIG. FIG. 5 is a perspective view of the positioning member 140 of the tool pot shown in FIG.

  As shown in FIG. 1 or FIG. 2, the tool pot 100 according to the present embodiment includes a hollow cylindrical tool pot main body 110 and a ball holding member that loosely holds a plurality of balls 132 of the tool pot 100 in the radial direction. 131, a slide pin 133 that is slidably inserted in the ball holding member 131 in the axial direction, and a spring accommodating portion 131e of the ball holding member 131 and a spring receiving portion 133d of the slide pin 133. , And a spring 135 that presses and urges the slide pin 133 in the backward direction. Among these, the ball holding member 131, the ball 132, the slide pin 133, and the spring 135 are integrated into the tool pot main body 110. A tool holder 130 as a unit is configured.

As shown in FIG. 3, the tool pot body 110 has a hollow cylindrical shape, and is formed with a locking hook 120 for receiving the tool holder 130 on the front side of the inner peripheral surface, and on the rear side. A retaining ring groove 114 is formed in which a retaining ring 150 for retaining the rear end of the holding body 130 is fitted.
An inner positioning groove 121 into which a positioning member 140 (described later) fits in the locking collar portion 120 formed in the tool pot main body 110 is positioned so as to be back-to-back with the outer positioning groove 111a described above when viewed from the axial direction. Is formed.
A flange portion 111 extending outward is formed at the front end portion of the tool pot main body 110, and a tool pot 100 such as a link plate (not shown) is attached to the outer peripheral side of the flange portion 111. An outer positioning groove 111a for positioning with the mounting portion is formed.
In addition, a resin end seal member 112 and a side seal member 113 that closely support the shank portion S of the tool are attached to the flange 111 opening and the inner peripheral surface of the tool pot main body 110, respectively. Yes.

As shown in FIG. 1, FIG. 2 or FIG. 4, the ball holding member 131 has a large-diameter inner fitting portion 131 a that has a large diameter and abuts against the inner peripheral surface of the tool pot body 110, and is positioned on the front side. A small-diameter tool holding portion 131b that holds the tool by projecting the steel ball 132 housed in the inner portion of the shank portion S of the tool holder TH and engaging the engaging portion.
The outer peripheral surface of the small-diameter tool holding portion 131b forms a guide surface that guides an engagement hole formed in the shank portion S of the tool holder TH, and the small-diameter tool holding portion 131b has a plurality of balls protruding from each ball 132. A protruding hole 131d is formed penetrating in the radial direction.
Each of the ball protruding holes 131d is formed so that the hole diameter on the outer peripheral side is slightly smaller than the diameter of the ball 132, so that each ball 132 is prevented from jumping out and falling off.
A spring accommodating portion 131e that accommodates a spring 135 that presses and urges the slide pin 133 rearward is formed on the rear end side of the large-diameter inner fitting portion 131a.
Further, a positioning member 140 described later is attached to the outer peripheral surface of the small diameter tool holding portion 131b, and a flat surface 131c as a positioning portion that cooperates with the inner positioning groove 121 formed in the locking collar portion 120 of the tool pot body 110. Is formed.
In the present embodiment, as the positioning portion, a part of the cylindrical surface is cut out to form a flat surface. However, as long as the positioning member 140 can be fixed, the positioning portion 140 may not be a flat surface.

The slide pin 133 is pressed so that the ball 132 protrudes from the ball projection hole in order to engage the ball 132 with the ball engagement portion formed on the inner peripheral surface of the shank portion S of the tool holder TH by the retraction of the slide pin 133. A clamp cam portion 133a is provided.
Subsequent to the clamp cam portion 133a, a small-diameter clamp portion 133b that locks the ball 132 that is pressed by the ball engaging portion of the tool holder TH and is about to be detached is provided. A small-diameter sliding shaft portion 133c for separating the 132 from the ball engaging portion, and loosely fitting the ball 132 between the sliding shaft portion 133c and the side wall of the small-diameter tool holding portion 131b of the ball holding member 131. A ball-accommodating space 134 for accommodating is formed.
A spring receiving portion 133d is formed on the rear end side of the slide pin 133 so as to be opposed to the rear end of the spring 135. In the assembled state, the spring receiving portion 133d receives the pressing force of the spring 135. The entire slide pin 133 is urged rearward.
In addition, the slide pin 133 is normally comprised from two members, a slide pin main body and a front-end | tip member, and these slide pin main bodies and front-end | tip members are connected with the volt | bolt.

As shown in FIG. 5, a positioning member 140 is fixed to a flat surface 131c formed on the ball holding member 131 so as not to be relatively movable by a bolt or the like.
The positioning member 140 has a substantially rectangular parallelepiped shape, but a chamfered portion 141 is formed on the tip side, and the front end portion is narrow.
By mounting the positioning member 140 on the flat surface 131c of the ball holding member 131, the ball holding member 131 that is basically cylindrical and has no directivity in the circumferential direction can be freely rotated. It will exhibit an asymmetrical shape with directionality in the direction.
Moreover, the shape of the upper half part of the positioning member 140 is designed to fit into the inner positioning groove 121 formed in the locking collar 120 of the tool pot main body 110, so that it is an integral unit. When the tool holder 130 is incorporated in the tool pot body 110, as shown in FIG. 1 or 2, the positioning member 140 is interposed between the tool pot body 110 and the tool holder 130, so that Positioning is ensured without any relative rotation in the circumferential direction.

In this embodiment, the tool holder 130 is formed on the inner periphery of the tool pot body 110 unless the positioning member 140 is inserted into the inner positioning groove 121 formed in the locking collar 120 of the tool pot body 110. Since it cannot be inserted to the position of the retaining ring groove 113, the retaining ring 150 cannot be fitted into the retaining ring groove 113 and the tool holder 130 cannot be assembled.
This completely prevents the tool holder 130 from being mistakenly assembled to the tool pot body 110.
In addition, the fitting between the positioning member 140 and the inner positioning groove 121 has extremely high rigidity against mutual rotation as compared with the positioning by the conventional spring pin. Unlike positioning with a spring pin that is easy to do, there is no risk of loosening during use.

However, since the axial movement of the tool holder 130 cannot be prevented only by fitting the positioning member 140 and the inner positioning groove 121, in this embodiment, the retaining ring groove 114 is engraved in the tool pot body 110. In order to prevent the tool holder 130 from moving in the axial direction by fitting the retaining ring 150 at the position of the rear end of the tool holder 130 after the tool holder 130 is incorporated into the tool pot body 110. I have to.
As described above, the tool holder 130 is used by the tool holder 130 by combining the circumferential fixing by the fitting of the positioning member 140 and the inner positioning groove 121 and the axial fixing by the locking collar 120 and the retaining ring 150 together. Without being moved in the circumferential direction or the axial direction with respect to the pot main body 110, the tool main body 110 is surely incorporated.

When the positioning member 140 as in the present embodiment is used, the positioning member 140, the bolt for fixing the positioning member 140, and the retaining ring 150 such as the retaining ring 150 are comparatively used without using fine parts such as a conventional spring pin. Since the tool pot 100 can be manufactured using a large part, it is not necessary to care about a small part, the assembling work is simplified, and the part management is facilitated.
Further, since the chamfered portion 141 is formed at the front end portion of the positioning member 140 so as to have a tapered shape, the positioning member 140 is not strictly aligned with the position of the inner positioning groove of the locking collar portion 120, and thus the surface. Even if there is a misalignment of about the width of the chamfer 141, when the tool holder 130 is pushed in, the positioning member 140 fixed to the tool holder 130 is guided to the chamfer 141 and naturally aligned to the original position. Therefore, the work of assembling the tool holder 130 into the tool pot body 110 can be further simplified.
Next, the end seal member 112 and the side portion are respectively connected to the inner peripheral end portion of the flange portion 111 provided at the end portion of the tool pot main body 110 and the inner side surface contacting the outer peripheral surface of the shank portion S of the tool pot main body 110. Since the seal member 113 is provided, the tool holder TH is provided inside the tool pot 100 by the end seal member 112 and the side seal member 113 on the outer peripheral side and the ball engaging portion on the inner peripheral side by the tool holder. Since it is supported by the ball 132 protruding from 130, the tool accommodated in the tool pot 100 is securely held without swinging up and down and left and right.

Further, as shown in FIG. 1 (a), an outer positioning groove 111a formed in the upper portion of the tool pot body 110 in the figure, and an inner positioning groove 121 formed in a locking collar portion 120 projecting on the inner peripheral side. Is positioned close to and parallel to the back-to-back position when viewed from the axial direction, so that when the grooves are cut by a cutting machine, the work of remounting the tool pot body 110 in the machining operation is reduced. Since the cutting operation can be performed, the processing operation of the tool pot body 110 can be simplified.
In the present embodiment, a slide pin 133 having a small-diameter clamp portion 133b continuous to the clamp cam portion 133a is used, but a slide pin 133 that does not have the small-diameter clamp portion 133b may be used. it can.

  The tool pot 100 of the present embodiment obtained as described above is protruded from the inner peripheral surface of the tool pot main body 110 and is partially formed with an inner positioning groove 121 to engage the front end of the tool holder 130. The locking hook 120 to be stopped, the flat surface 131 c formed on the outer peripheral surface of the tool holder 130 and facing the inner positioning groove 121, the inner positioning groove 121 of the tool pot body 110, and the tool holder 130. The positioning member 140 is inserted between the flat surface 131c of the tool holder 130 so that the tool holder 130 and the tool pot main body 110 cannot rotate relative to each other. A tool pot 100 that simplifies the positioning and assembling of the tool holder 130 to the tool pot main body 110 and does not require skilled and highly accurate work, and has high positioning strength. It is possible to provide, an accident such as damage to the human hand or a tool pot body 110 as previously may be Zetsumu.

  The tool pot main body 110 is formed with a retaining ring groove 114 for fitting a retaining ring 150 for engaging the rear end of the tool holding body 130 on the inner peripheral surface, and the tool holding body 130 is formed on the inner periphery of the tool pot main body 110. The tool holder 130 is fixed to the tool pot main body 110 by being fixed in a non-slidable manner in the axial direction by a locking collar 120 protruding from the surface and a retaining ring 150 fitted in the retaining ring groove 114. Further, the stability of the insertion and removal of the tool with respect to the tool pot 100 can be further ensured by fixing with higher positioning strength.

  Furthermore, since the chamfered portion 141 having a narrow tip is formed at the front end portion of the positioning member 140, the work of assembling the tool holder 130 into the tool pot main body 110 can be further simplified, and the effect is enormous. It is.

100, 500 ... Tool pot 110, 510 ... Tool pot main body 111, 511 ... End flange part 111a, 511a ... Outer positioning groove 112, 512 ... End seal member 113 ... Side seal member 114 ・ ・ ・ Retaining ring groove 120 ・ ・ ・ Locking collar 121 ・ ・ ・ Inside positioning groove
130, 530 ... Tool holder 131 ... Ball holding member 131a ... Large diameter inner fitting part 131b ... Small diameter tool holding part 131c ... Positioning part 131d ... Ball protruding hole 131e ... Spring housing part 132, 532 ... Ball 133, 533 ... Slide pin 133a ... Clamp cam part 133b ... Small diameter clamp part 133c ... Sliding shaft part 133d ... Spring receiving part 134 ··· Ball receiving gap portion 135 ··· Spring 140 ··· Positioning member 141 ··· Chamfering portion 142 ··· Bolt hole 150 ··· Retaining ring 515 ··· Locking pin insertion hole 520 ··· Locking step 533 ...... Locking pin insertion hole 570 ...... Locking pin TH ・ ・ ・ Tool holder S ・ ・ ・ Shank P・ ・ ・ Pull stud

Claims (5)

A cylindrical tool pot main body that accommodates a shank portion of a tool, and a cylindrical tool holder that is coaxially mounted in the tool pot main body and is engaged with and disengaged from the shank portion of the tool to removably hold the tool. In the tool pot provided,
A locking flange portion for engaging the front end of the tool holder by forming the inner positioning groove part provided to protrude on the inner peripheral surface of the tool pot body,
A positioning portion formed to face the inner positioning groove located on the outer peripheral surface of the tool holder,
And a positioning member for disabling the relative rotation between the tool pot body and the tool holder and interposed between the positioning portion of the inner positioning groove and the tool holder of the tool pot body,
A tool pot, wherein a chamfered portion having a narrow front end is formed at a front end portion of the positioning member . The tool pot body is formed with a retaining ring groove for fitting a retaining ring for retaining the rear end of the tool holder on the inner peripheral surface,
The tool holder is fixed so as not to move in the axial direction by a locking collar formed on an inner peripheral surface of the tool pot body and a retaining ring fitted in the retaining ring groove. The tool pot according to claim 1. The tool holder is
A ball holder for loosely holding a plurality of balls holding the tool in contact with the inner peripheral surface of the shank portion of the tool in the radial direction, and an axial coil spring inserted through the ball holder so as to be slidable in the axial direction And a clamp cam which is provided at the tip of the slide pin and is brought into contact with the ball by retraction of the slide pin to engage the ball engaging portion on the inner peripheral surface of the tool shank. And a ball receiving gap portion that separates the clamp cam portion from the ball and retracts and holds the ball from the ball engaging portion by advancement of the slide pin. Or the tool pot of Claim 2. The tool pot main body has an end flange portion on the front end side, which is the side on which the shank portion of the tool is brought close,
An annular end seal member having a flange portion is attached to the end portion on the front end side of the end flange portion,
The tool pot according to any one of claims 1 to 3, wherein an annular side seal member is attached to an inner peripheral surface of the tool pot main body. The inner positioning groove formed in the locking collar is formed back-to-back when viewed from the axial direction with the outer positioning groove formed in the end flange formed in the front end of the tool pot body. The tool pot according to any one of claims 1 to 4, wherein the tool pot is provided.

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