JP2001205534A - Tool pot holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong the service life of and improve the reliability of a tool pot holding device. SOLUTION: A chain 23 is mounted with a pair of plate members 28 and 29 constituting a tool pot holding body 27, and the plate members 28 and 29 have locating holes 30 and 31. The plate members 28 and 29 carry, on their inside, holders 32 and 33 coupled by a coupler 34 into a position corresponding to the locating holes 30 and 31. The holders 32 and 33 accommodate movable pressure elements 35 and 36 and compression coil springs 37 and 38 for urging the pressure elements 35 and 36 in the direction of the locating holes 30 and 31. The pressure elements 35 and 36 are partly projected outward from the locating holes 30 and 31. A tool pot 39 is equipped with engaged tongues 42 and 43 with recesses 42a and 43a where the pressure elements 35 and 36 engage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a tool pot holding device for detachably holding a tool pot.

[0002]

For example, there is a so-called magazine as a device that stocks a plurality of tools used in a machining center and supplies them appropriately. FIG.
0 shows an example of a magazine. This magazine 1
Is provided with a transfer device 4 constructed by extending a chain 3 between a sprocket 2 and an arc guide 2a, and a tool pot support device 6 for supporting a tool pot 5 is provided on the chain 3 of the transfer device 4. . A tool (not shown) is attached to the tool pot 5.

[0003] The tool pot supporting device 6 will be described with reference to FIGS. Chain 3
The plate members 7 and 8 are attached to face each other. Each of the plate members 7, 8 has a positioning piece 7a, 7
b, 8a and 8b are formed. Further, each plate member 7,
A leaf spring 9 is attached between the eight via an attachment shaft 10, 10. The leaf spring 9 has an overall shape of “Ω”
It is in a state. In this leaf spring 9, engagement portions 9a, 9b protruding inwardly in a "-" shape are formed on both sides facing the lower portion.
Are formed, and the engaging portion 9a is provided with a positioning piece 7a,
The engaging portion 9b protrudes inward from the distal end of the positioning piece 7b, 8b.

The tool pot 5 includes the positioning piece 7
a, 7b are formed with grooves 11a, 11b, and the groove 12 is fitted with positioning pieces 8a, 8b.
a and 12b are formed.

In the above configuration, the tool pot 5 is supported by the tool pot supporting device 6 as shown in FIG.
As shown in FIG. 1, each of the grooves 11a, 11b, 12a, 12
b is pushed in the direction of arrow A so as to fit into the positioning pieces 7a, 7b, 8a, 8b. At this time, the engaging portions 9a and 9b of the leaf spring 9 are pushed in while being expanded. After being pushed, the engaging portions 9a, 9
b supports and holds the tool pot 5. To remove the tool pot 5 from the plate members 7 and 8, the tool pot 5 is forcibly pushed out in the direction of the arrow A by an extruding jig (not shown). At this time, the engaging portions 9a and 9b are expanded and deformed, and the tool pot 5 is pushed out.

However, in the above-described conventional configuration, the leaf spring 9 must be formed in a peculiar shape, and the production is troublesome and the cost is increased. Further, since the engaging portions 9a and 9b themselves are formed by the leaf spring 9, the engaging portions 9a and 9b repeat the expanding deformation and the elastic return deformation, and the engaging portions 9a and 9b are repeated.
b has been deformed and the engagement function has been impaired, or the required engagement force has been reduced, resulting in a short service life and poor reliability. Moreover, the leaf spring 9 has
Since it is necessary to keep the shape of the engaging portion in the engaged and held state, the thickness of the leaf spring 9 is increased to increase the spring force. As a result, there is a problem that an excessively large force is required for mounting and removing the tool pot 5.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a tool pot that has a long service life, improves reliability, and does not require excessive force for mounting and removing the tool pot. Providing a support device.

[0008]

According to a first aspect of the present invention, a tool pot is detachably held on a tool pot holder which moves in a magazine. The tool pot projects from an outer surface of the tool pot holder and projects therefrom. A pressing body provided so that the amount is variable, and a biasing means provided on the tool pot holder and biasing the pressing body in a projecting direction,
An engaged portion provided on the tool pot and engaged with the projecting portion of the pressing body. The engagement is held by the urging means so that the tool pot is held by the tool pot holder. It becomes.

In this configuration, since the pressing body that engages with the engaged portion of the tool pot and the urging means are separate components, it is possible to prevent the urging means from being deformed or the urging force from being reduced. It can be prevented as much as possible. In addition, the urging means itself does not need to function as an engaging portion, and only needs an urging force sufficient to hold the engagement between the pressing body and the engaged portion. Will not require excessive force. As a result, the service life can be extended.

According to a second aspect of the present invention, there is provided a tool pot holder which is composed of a pair of opposed plate members and holds a tool pot and moves in a magazine, and gradually reduces the diameter of each of the plate members from the inner surface to the outer surface. Arrangement holes, two cylindrical holders respectively arranged on the inner surface of each of the plate members corresponding to the arrangement holes, and a part movably provided in each holder and partially disposed. Two pressing bodies consisting of spheres protruding from the holes, urging means provided in each of the holders for urging the pressing bodies in the protruding direction, and protrusions of the pressing bodies formed on both sides of the tool pot, respectively The tool pot is held by the tool pot holder by holding the engagement between each pressing body and each recess by the urging means. Things.

In this configuration, since the urging means and the pressing body, which is an engaging portion engaging with the recess of the tool pot, are separate parts, the urging means is deformed or the urging force is reduced. Can be prevented as much as possible. In addition, the urging means itself does not need to function as an engaging portion, and only needs to have an elastic force sufficient to hold the engagement between the pressing body and the concave portion. Therefore, an excessive amount of force is required for mounting and removing the tool pot. No need for power.

In particular, since the pressing body is formed of a spherical body and the engaged portion is formed of a conical concave portion, the engagement between the two is extremely smooth, and the configuration and manufacture are extremely simple. Furthermore, since the pressing body and the urging means are provided in the cylindrical holder, it is possible to prevent the pressing body and the urging means from falling off,
The mounting of the pressing body and the urging means is also simplified.

A third aspect of the present invention is characterized in that, in the first or second aspect, the urging means comprises a compression coil spring. In this configuration, a so-called commercially available spring can be used, so that it is possible to save the trouble of manufacturing and reduce the cost.

According to a fourth aspect of the present invention, in the second aspect, the two holders are connected by a connector, and the holder is pressed and fixed to the inner surface of the opposing plate member by the connector. Having. In this configuration, the two holders can be fixed to the two plate members by one connecting tool, so that the mounting operation can be simplified.

According to a fifth aspect of the present invention, in the second aspect, the contact angle of the pressing body with the concave portion in the engaged state is 60 °.
It has a feature in the range of 〜98 °. In this configuration, the engagement is relatively easy, the retention of the engagement is excellent, and the removal of the tool pot becomes easy.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 2 shows the magazine 21. The magazine 21 includes a transfer device 24 configured by extending a chain 23 between a sprocket 22 and an arc guide 22a.
A tool pot supporting device 26 for supporting the tool pot 25 is provided on the chain 23 of the first embodiment. A tool (not shown) is attached to the tool pot 25.

Regarding the tool pot supporting device 26,
This will be described with reference to FIGS. 1, 3 to 9. Chain 23
, A pair of plate members 28 and 29 constituting a tool pot holding body 27 are attached to face each other. Each plate member 2
The positioning pieces 28a have a bifurcated shape at 8, 29,
28b, 29a and 29b are formed. Further, in the middle part of each of the plate members 28, 29, there are disposed holes 30, 31, which are formed in a tapered shape in which the diameter gradually decreases from the inner surface to the outer surface.
Are formed respectively. And each of the plate members 2
Circular positioning recesses 28c, 29c are formed around the arrangement holes 30, 31 on the inner surfaces of 8, 29.

On the inner surfaces of the plate members 28 and 29, cylindrical holders 32 and 33 having bottoms are arranged in a form corresponding to the arrangement holes 30 and 31. In this case, each holder 32,
The tip of 33 is fitted and positioned in the positioning recesses 28c and 29c. A right-handed male screw portion 32a is formed on the outer surface of one of the holders 32, 33 and a pair of flat surfaces 32b for preventing rotation.
(Only one is shown) is formed. On the outer surface of the other holder 33, a left-handed male screw portion 33a is formed, and a pair of flat surfaces 33b (only one is shown) for preventing rotation are formed.

The two holders 32 and 33 are connected by a cylindrical connecting member 34. That is, a right-handed female screw portion 34a is provided in a substantially right half of the inner surface of the connecting tool 34, and a left-handed female screw portion 3 is provided in a substantially left half thereof.
4b is formed, and a hole 34c for a screwdriver is formed in the center wall. The female screw portions 34a, 34b of the connecting member 34 are screwed into the male screw portions 32a, 33a of the holders 32, 33 to connect the two holders 32, 33, and the holder 3 is appropriately screwed.
2 and 33 are pressed and fixed to positioning recesses 28c and 29c on the inner surfaces of the opposed plate members 28 and 29, respectively.

In the holders 32 and 33, pressing bodies 35 and 36 made of spheres are provided in advance together with compression coil springs 37 and 38 as urging means. The pressing members 35, 3
6 is movable in the holders 32 and 33, and usually,
A part thereof is pressed by compression coil springs 37 and 38 so as to protrude outside from the arrangement holes 30 and 31 respectively. The amount of protrusion is variable by an external pushing force.

On the other hand, the tool pot 25 is configured so that a tool holder 39 can be attached to and detached from the tool pot 25 (insertion and removal), and the positioning piece portions 28a, 28b, 29a are provided on the outer surface of the tool pot 25. , 29b are formed with positioning grooves 40a, 40b, 41a, 41b. Further, at two places in the axial direction (front-rear direction) of the outer surface of the tool pot 39, engaged pieces 42 and 43, which are engaged bodies, are attached. The distance between the inner surfaces of 43 is set slightly larger than the distance between the outer surfaces of the plate members 28 and 29. And
The engaging members 42, 43 are provided with the pressing members 35, 36, respectively.
The conical concave portions 42a and 43a, which are engaged portions, are formed respectively. In this case, the contact angle α (see FIG. 6) of the pressing body 35 with the concave portion 42a in the engaged state is set to a value substantially in the range of 60 ° to 98 °, and the other pressing body 36 in the engaged state is The contact angle with the concave portion 43a is the same.

In the magazine 21, as shown in FIG. 2, a tool pot attachment / detachment tool 44 (not shown) extends between a center attachment / detachment position P1 in the lower part of the traveling path of the chain 23 and a standby position P2 therebelow. As shown in FIG. 9, this has a receiving portion 44a for receiving the lower portion of the tool pot 25 and a pressing portion 44b for pressing the upper rear portion.

In the above configuration, the tool pot 25 is connected to a pair of plate members 28, 2 forming the tool pot holder 27.
9, for example, by raising the tool pot attachment / detachment tool 44 at the position shown in FIG. 9B, the positioning grooves 40a, 40b,
41a, 41b are positioning piece portions 28a, 28b, 29
a, 29b, and the recesses 42a, 43a are fitted and engaged with the pressing bodies 35, 36. In this case, the pressing members 35 and 36 receive the spring force of the compression coil springs 37 and 38 and engage with the concave portions 42a and 43a, and the engaged state is maintained (see FIG. 1).

The tool pot 25 is connected to the pair of plate members 2.
When removing the tool pot 25 from the standby position P2 at the position shown in FIG.
Is moved down, the tool pot 25 is moved downward by lowering the tool pot attachment / detachment tool 44. At this time, the concave portions 42a, 43a come off the pressing members 35, 36 against the pressing force of the compression coil springs 37, 38,
The engagement is released.

According to this embodiment, the pressing members 35, 3 engaging with the concave portions 42a, 43a of the tool pot 25 are used.
Since the compression coil springs 37 and 38 are separate parts from the compression coil springs 37 and 38, deformation of the compression coil springs 37 and 38 and reduction of the urging force (spring force) can be prevented as much as possible. Moreover, the compression coil springs 37 and 38 themselves do not need to function as engaging portions, and the pressing members 35 and 36 and the concave portions 42 are not required.
A spring force sufficient to maintain engagement with the a and 43a is sufficient, and therefore, no excessive force is required for mounting and removing the tool pot 25. As a result, the service life can be extended.

In particular, according to the present embodiment, the pressing members 35, 36
Are composed of spheres, and the engaged portions are conical concave portions 42a, 4a.
3a, the engagement between the two is extremely smooth, and the configuration and manufacture are extremely simple. Further, the pressing body 35 and the compression coil spring 37 are provided in one of the holders 32.
Are provided, and the pressing body 36 and the compression coil spring 38 are provided in the other holder 33, so that these pressing bodies 35, 36
And the compression coil springs 37, 38 can be prevented from falling off, and the pressing members 35, 36 and the compression coil springs 37,
The mounting of the 38 is also simplified.

Further, the urging means is a compression coil spring 3
Since they are composed of the elements 7 and 38, so-called commercially available springs can be used, so that it is possible to save the trouble of manufacturing and reduce the cost.

Further, according to this embodiment, the two holders 32, 33 are connected by the connecting member 34, and the holders 32, 33 are pressed and fixed to the inner surfaces of the opposed plate members 28, 29 by the connecting member 34, respectively. The two holders 32 and 33 are connected to one connecting tool 34
Thereby, it can be fixed to both plate members 28 and 29, and the mounting work can be simplified.

Further, according to the present embodiment, the contact angles of the pressing members 35 and 36 with the concave portions 42a and 32a in the engaged state are set within the range of 60 ° to 98 °, so that the engagement is relatively easy. Thus, the engagement and holding are excellent, and the tool pot 25 can be easily removed. That is, if the contact angle is smaller than 60 °, the force required for the engagement (the force for compressing the compression coil springs 37 and 38) may be small, but the engagement margin β (see FIG. 6) is small and the reliability of the engagement is small. Poor sex. If the contact angle is larger than 98 °, the engagement margin β is large and the reliability of the engagement is high, but the force required for the engagement (the force for compressing the compression coil springs 37 and 38) increases, and The protrusion amount γ shown in FIG.
There is also a possibility that 5, 36 may fall out of the arrangement holes 30, 31. In this regard, in this embodiment, as described above, the concave portions 42a,
Since the contact angle with respect to 32a is set in the range of 60 ° to 98 °, it is relatively easy to engage and excellent in holding the engagement,
In addition, removal of the tool pot 25 becomes easy. further,
Since the positioning recesses 28c and 29c are formed in the plate members 28 and 29, the holders 32 and 33 can be positioned and can be stopped.

The pressing body is preferably a spherical body, but is not limited to this. For example, a rod-like body having a circular arc-shaped tip may be used. The biasing means is preferably a compression coil spring, but is not limited to this. For example, a configuration may be used in which the pressing body is biased by using a plate spring or a torsion spring.

[0031]

As apparent from the above description, the present invention has the following effects. According to the first aspect of the present invention, since the pressing body that engages with the engaged portion of the tool pot and the urging means are separate components, the urging means is deformed or the urging force is reduced. As much as possible, it is sufficient that the urging means has an urging force sufficient to maintain the engagement between the pressing body and the engaged portion, and no excessive force is required for mounting and removing the tool pot. As a result, the service life can be extended.

According to the second aspect of the present invention, in addition to obtaining the same effects as the above-described invention, the pressing body is formed of a sphere and the engaged portion is formed of a conical concave portion. Is extremely smooth, and the structure and manufacture are extremely simple.Moreover, since the pressing body and the urging means are provided in the cylindrical holder, the pressing body and the urging means can be prevented from falling off, and The mounting of the pressing body and the urging means is also simplified.

According to the third aspect of the present invention, since the biasing means is constituted by a compression coil spring, a so-called commercially available spring can be used, so that it is possible to reduce the trouble of manufacturing and reduce the cost. be able to. According to the fourth aspect of the present invention, the two holders are connected by the connecting member, and the holder is pressed and fixed to the inner surface of the opposing plate member by the connecting member. The fixing member can be fixed to both plate members by means of a tool, so that the mounting operation can be simplified. According to the invention of claim 5, the contact angle of the pressing body with the concave portion in the engaged state is 60 ° to 9 °.
Since the angle is set within the range of 8 °, it is easy to engage and retain the engagement, and the tool pot can be easily removed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a tool pot supporting device according to an embodiment of the present invention.

FIG. 2 is a front view of a magazine.

FIG. 3 is a partial front view of an arrangement state of a tool pot supporting device.

FIG. 4 is a bottom view seen from the direction of arrows QQ in FIG. 3;

FIG. 5 is an exploded perspective view of the tool pot supporting device.

FIG. 6 is a longitudinal sectional side view of a pressing body portion.

FIG. 7 is a perspective view of a tool pot supporting device.

FIG. 8 is a perspective view of a tool pot.

FIG. 9A is a vertical side view in a state where the tool pot is in a detachable position, and FIG. 9B is a vertical side view in a state where the tool pot is in a standby position.

FIG. 10 is a diagram corresponding to FIG. 2 showing a conventional example.

FIG. 11 is a diagram corresponding to FIG. 3;

FIG. 12 is a diagram corresponding to FIG. 4;

[Explanation of symbols]

21 is a magazine, 24 is a transfer device, 25 is a tool pot, 26 is a tool pot support device, 27 is a tool pot holder, 28 and 29 are plate members, 30, 31 are arrangement holes, 3
2, 33 are holders, 34 is a coupling tool, 35 and 36 are pressing bodies, 37 and 38 are compression coil springs (biasing means), 42,
43 is an engaged piece portion, 42a and 43a are concave portions (engaged portions).
Is shown.

Claims (5)

[Claims] A tool pot which is detachably held by a tool pot holder which moves in a magazine, wherein said pressing means is provided so as to protrude from an outer surface of said tool pot holding body and to have a variable amount of projection. A body, a biasing means provided on the tool pot holding body for biasing the pressing body in a protruding direction, and an engaged portion provided on the tool pot and engaged with the projecting portion of the pressing body. A tool pot holding device configured to hold the engagement by the urging means to hold the tool pot on the tool pot holding body. 2. A tool pot holder which is composed of a pair of plate members facing each other and holds a tool pot and moves in a magazine, and is opened in such a manner that the diameter of each of the plate members is gradually reduced from the inner surface to the outer surface. An arrangement hole, two cylindrical holders respectively arranged on the inner surface of each plate member corresponding to the arrangement hole, and a sphere movably provided in each holder and partially protruding from the arrangement hole. And pressing means provided in each of the holders to urge the pressing body in a protruding direction thereof, and projecting portions of the pressing bodies formed on both sides of the tool pot, respectively, for fitting engagement. A tool pot holding device, comprising: two conical concave portions; and a tool pot held by the urging means to hold the tool pot on the tool pot holder. 3. The tool pot holding device according to claim 1, wherein said urging means comprises a compression coil spring. 4. The tool pot holding device according to claim 2, wherein the two holders are connected by a connector, and the holder is pressed and fixed to the inner surface of the opposing plate member by the connector. apparatus. 5. The tool pot holding device according to claim 2, wherein a contact angle of the pressing body with the concave portion in the engaged state is in a range of 60 ° to 98 °.