JP4417516B2 - Cutting tool storage case - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a storage case for storing a cutting tool such as an end mill or a drill.
[0002]
[Prior art]
Conventionally, a storage case 100 for a cutting tool as shown in FIG. 5 is known. Incidentally, FIG. 5A is a partially cutaway exploded perspective view of the storage case 100, and FIG. 5B is a partially cutaway assembly perspective view.
[0003]
The storage case 100 stores and protects a cutting tool D such as a drill or an end mill. As shown in FIG. 5A, the storage case 100 has a long rectangular parallelepiped inner case 101 and the inner case 101. An outer case 102 that is externally fitted to the inner case 101, a tool holder 103 that is inserted into an opening provided at one end of the inner case 101, and a cushioning member 104 such as a sponge that is installed at the bottom of the inner case 101. .
[0004]
The tool holder 103 is formed with an insertion hole 103a that is inserted through the center position in the axial direction and into which the cutting tool D is inserted. The tool holder 103 is fitted into the opening of the inner case 101. In this state, the cutting tool D is inserted into the insertion hole 103a and the outer case 102 is put on the inner case 101, whereby the cutting tool D is stored in the storage case 100 as shown in FIG. It becomes a state.
[0005]
And in the state where cutting tool D was stored in storage case 100, while the tip part is in contact with flexible buffer member 104, since the body part is inserted in fitting insertion hole 103a of tool holder 103, For example, even if the storage case 100 in which the cutting tool D is stored is handled roughly during transfer or handling, vibration in the storage case 100 of the cutting tool D is suppressed and the cutting edge is protected by the buffer member 104.
[0006]
[Problems to be solved by the invention]
By the way, in the conventional storage case 100 as described above, the tool holder 103 and the buffer member 104 are used for protecting the cutting tool D, and there is a problem that the number of parts is large and the parts cost and the assembly cost increase. There is a point.
[0007]
In addition to the storage case shown in FIG. 5, there are various types of storage cases, all of which employ a member that requires a relatively high material cost to hold the cutting tool D or open the outer case. The cutting edge of the cutting tool D held by the holder in the inner case protrudes to the outside, both of which have problems.
[0008]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cutting tool storage case that can protect the cutting tool safely and reliably while reducing the number of parts. Yes.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a storage case for storing a cutting tool provided with a cutting blade, an inner case having an opening at one end, an outer case fitted to the inner case, and both side portions. Is formed by a pair of clamping plates configured to be able to clamp the cutting tool while protecting the cutting blade. It is characterized by being.
[0010]
According to this invention, the cutting tool is housed in the inner case while being sandwiched between the pair of sandwiching plates, and both sides of the sandwiching plate inserted into the inner case are in sliding contact with the inner wall surface of the inner case. Therefore, the holding state of the cutting tool by the pair of clamping plates in the inner case is stable, and even if the storage case is handled roughly, the cutting tool swings in the inner case and the cutting edge collides with the inner wall surface. Inconveniences such as damage are reliably avoided.
[0011]
In addition, since the cutting tool is clamped between the pair of clamping plates, inconvenience that the cutting edge of the cutting tool is exposed to the outside when the outer case is opened and the clamping plate is taken out from the inner case is avoided for safety measures. Convenient.
[0012]
Furthermore, since it is possible to employ a pair of sandwiching plates having the same shape, different types of holding members (for example, a cushioning member such as a sponge that protects the cutting edge, and a tool that suppresses tool swinging as in the past) Compared to the case of using a holder etc., the parts cost is lower.
[0013]
In addition, if the storage case and the cutting tool holding member are formed of the same synthetic resin material, the separation process may not be performed when the storage case and the cutting tool holding member are processed as waste.
[0014]
The invention according to claim 2 is the invention according to claim 1, wherein the cutting tool holding member is formed such that each end of the pair of sandwiching plates is connected to be folded in two, and each sandwiching plate includes: Storage recesses for storing cutting tools are respectively provided on the opposing surfaces.
[0015]
According to this invention, since the pair of sandwiching plates are formed by folding the sandwiching plate base body into two, the member for holding the cutting tool is substantially only one member, and the number of parts is further increased. Reduction is realized and contributes to reduction of manufacturing cost.
[0016]
Since each holding plate is provided with a storage recess on the opposing surface, the cutting tool is stored in a stable state by fitting the cutting tool into the storage recess.
[0017]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the clamping plate is formed so as to slidably contact the inner wall surface of the inner case at both ends in a state where the cutting tool is clamped . It is characterized by having.
[0018]
According to this invention, the rocking | fluctuation of the clamping board accommodated in the inner case is prevented reliably by the sliding contact part formed in the both ends of the clamping board of the state which clamped the cutting tool .
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an exploded perspective view showing an embodiment of a cutting tool storage case according to the present invention, FIG. 2 is a partially cutaway assembly perspective view thereof, and FIG. 1A is an assembled cutting tool. A state in which the cutting tool is mounted on the holding member, (B) shows a state in which the cutting tool holding member on which the cutting tool is mounted is stored in the storage case. 3 is a cross-sectional view taken along line AA in FIG.
[0020]
As shown in these drawings, the storage case 1 stores a rod-shaped cutting tool D provided with a cutting blade D1 on its peripheral surface or tip, such as an end mill or a drill, inside. The basic case which consists of the inner case 2 which accommodates, the outer case 3 externally fitted in this inner case 2 in a slidable contact state, and the cutting tool holding member 4 which is internally inserted so that it can be inserted and removed while slidably contacting the inner case 2 It has a configuration. The inner case 2 and the outer case 3 are formed by synthetic resin injection-molded products, and the cutting tool holding member 4 is formed by sequentially subjecting a thin strip made of synthetic resin to press molding processing. ing.
[0021]
Incidentally, if the same type of synthetic resin is used for the inner case 2, the outer case 3, and the cutting tool holding member 4, when the storage case 1 is subjected to disposal, it is disposed separately for each type of synthetic resin. This eliminates the need for so-called separation and disposal.
[0022]
The inner case 2 is formed in a rectangular tube shape in this embodiment. An insertion port 21 for fitting the cutting tool holding member 4 is provided at one end of the inner case 2, and a peripheral edge bulges outward at the other end. The bulging end portion 22 is provided, and the bulging end portion 22 is picked up with a finger so that the outer case 3 covering the inner case 2 can be easily removed. In addition, locking projections 23 are formed in two rows on the four outer wall surfaces of the inner case 2 over the entire length in the longitudinal direction.
[0023]
The outer case 3 is formed in a rectangular tube shape corresponding to the inner case 2, and a mounting opening 31 corresponding to the insertion port 21 of the inner case 2 is provided at one end. A locking recess 32 corresponding to the locking protrusion 23 of the inner case 2 is formed in one of the inner wall surfaces of the outer case 3. As a result, the mounting opening 31 of the outer case 3 is put on the end of the inner case 2 on the insertion port 21 side and the inner case 2 is pushed into the outer case 3, so that the locking recess 32 relatively moves the locking projection 23. In order to get over, a feeling of clicking is obtained at this time, and the engagement state of the outer case 3 with respect to the inner case 2 is stabilized by the engagement protrusion 23 fitting into the engagement recess 32.
[0024]
Note that a locking projection may be provided instead of the locking recess 32. By doing so, the locking projection 23 of the inner case 2 fits between the locking projections of the outer case 3, and the same effect as described above can be obtained.
[0025]
The cutting tool holding member 4 is formed by a pair of clamping plates 41 configured to be able to clamp the cutting tool in a state where the cutting blade D1 is protected. Each clamping plate 41 is set to have a length dimension substantially the same as the length dimension of the inner case 2, and the respective end portions are connected to each other by the connecting portion 44, and the pair of holding plates 41 are connected to the connecting portion 44. The two clamping plates 41 are stacked on each other by folding them around in two.
[0026]
Each of the clamping plates 41 includes a clamping plate main body 42 that supports the cutting tool D, and a sliding contact portion 43 that is V-shaped in cross-sectional view formed at both ends of the clamping plate main body 42, and , The connecting portion 44 is formed symmetrically. The sandwich plate main body 42 is formed in a flat plate shape so that the respective surfaces come into contact with each other by folding it around the connecting portion 44. Each sandwiching plate main body 42 is provided with a semicircular storage groove (storage recess) 42a in a cross-sectional view so as to extend in the longitudinal direction on the surface thereof, and the cutting tool D is fitted into one storage groove 42a. By laminating the sandwiching plates 41 in this state, the cutting tool D is placed in a storage portion 42b formed by combining the storage grooves 42a.
[0027]
The storage groove 42a is open at the end far from the connecting portion 44, while the close end of the storage groove 42a is closed at the bottom, so that the cutting tool D fitted into the storage groove 42a is These end portions protrude from the storage groove 42a to the side opposite to the connecting portion 44, and are prevented from moving in the storage groove 42a from the sandwich plate main body 42 toward the sliding contact portion 43.
[0028]
Therefore, by storing the cutting tool D in the storage groove 42a so that the cutting blade D1 side is on the connecting portion 44 side of the storage groove 42a, the storage portion in which the tip of the cutting blade D1 is formed by the pair of storage grooves 42a. It will be in the state protected reliably by being supported by the bottom part of 42b.
[0029]
The sliding contact portion 43 is formed at a right angle so that the outer surface thereof is in sliding contact with the inner wall surface of the inner case 2. Therefore, by inserting and inserting the pair of sandwiched plates 41 in the folded state into the inner case 2, the outer surface side of each sliding contact portion 43 formed at both ends of the sandwiched plate 41 is in close contact with the inner wall surface of the inner case 2. As a result, rattling of the cutting tool holding member 4 in the inner case 2 is reliably prevented.
[0030]
According to the configuration of the storage case 1, first, as shown by an arrow in FIG. 1, the cutting tool D is fitted into a storage groove 42 a that is recessed in one clamping plate body 42 of the cutting tool holding member 4. Next, by bending the respective clamping plates 41 around the connecting portion 44 in a direction approaching each other, the cutting tool D is formed in a rectangular parallelepiped shape by stacking the respective clamping plates 41 as shown in FIG. It will be in the state inserted in the accommodating part 42b of the cutting tool holding member 4 which became.
[0031]
In this state, the cutting tool holding member 4 is inserted into the inner case 2 from the connecting portion 44 side, and the outer case 3 is further fitted into the inner case 2 into which the cutting tool holding member 4 is inserted, whereby the cutting tool D Is stored in the storage case 1 in a state protected by the cutting tool holding member 4 as shown in FIG.
[0032]
As described above in detail, the present invention includes an inner case 2 having an opening at one end, an outer case 3 that is externally fitted to the inner case 2, and an internal fit while both side portions are in sliding contact with the inner case 2. The cutting tool holding member 4 constitutes a storage case 1, and the cutting tool holding member 4 is supported by a pair of holding plates 41 configured to hold the cutting tool D in a state where the cutting blade D1 is protected. Thus, the cutting tool D is stored in the inner case 2 while being sandwiched between the pair of sandwiching plates 41, and both sides of the sandwiching plate 41 fitted in the inner case 2 are on the inner wall surface of the inner case 2. The cutting tool D is held by the pair of clamping plates 41 in the inner case 2 in a slidable contact with each other. Therefore, even if the storage case 1 is handled roughly, it is possible to reliably avoid the inconvenience that the cutting tool D is oscillated in the inner case 2 and damaged when the cutting edge collides with the inner wall surface of the inner case 2. it can.
[0033]
In addition, since the pair of sandwiching plates 41 can be of the same shape, different types of holding members (for example, a cushioning member such as a sponge that protects the blade edge) and the vibration of the tool are suppressed as in the past. Compared with the case of using a tool holder or the like, the component cost can be reduced.
[0034]
And since each edge part of a pair of clamping board 41 was connected by the connection part 44 and the cutting tool holding member 4 was comprised around the connection part 44 so that it could be folded in two, the member holding the cutting tool D is substantially 1. This reduces the number of parts to only one member and contributes to a reduction in manufacturing costs. Further, since the storage grooves 42a for storing the cutting tools D are respectively provided in the opposing surfaces of the respective clamping plate bodies 42, the storage state of the cutting tools D can be stabilized by fitting the cutting tools D into the storage grooves 42a. it can.
[0035]
In addition, since the slidable contact portions 43 formed so as to be slidably contacted with the inner wall surface of the inner case 2 are provided at both ends of the sandwiched plate 41 in a folded state, the sandwiched plate 41 accommodated in the inner case 2 is provided. Shaking in the inner case 2 can be reliably prevented.
[0036]
FIG. 4 is a perspective view showing another embodiment of the cutting tool holding member in a state where each clamping plate is developed. The cutting tool holding member 4a of this embodiment is for storing a cutting tool such as an end mill having a small diameter portion and a large diameter portion, for example, and a storage groove 45 recessed in the sandwiching plate body 42 is provided. The large-diameter groove portion 45a for accommodating the large-diameter handle portion D2 of the cutting tool D and the small-diameter groove portion 45b for accommodating the small-diameter cutting blade D1.
[0037]
According to the cutting tool holding member 4a, the handle D1 is located between the large diameter groove 45a and the small diameter groove 45b in a state where the cutting tool D is stored in the storage groove 45 and the cutting blade D1 is fitted in the small diameter groove 45b. Therefore, the blade portion D2 is free in the small diameter groove portion 45b, and the cutting blade D1 is more reliably protected.
[0038]
In the above embodiment, the cutting tool holding member 4 is formed so that the pair of clamping plates 41 can be folded in two via the connecting portion 44. However, in the present invention, the pair of clamping plates 41 can be folded in two. It is not limited to being connected, and the cutting tool D may be accommodated by combining two sandwiching plates 41 separated from each other.
[0039]
Alternatively, the side portions of the pair of sandwiching plates 41 may be connected to each other so that each sandwiching plate 41 can be folded in two. That is, in this specification, the end part of the clamping plate of the present invention is used in a concept including the side part of the clamping plate.
[0040]
【The invention's effect】
According to the first aspect of the present invention, an inner case having an opening at one end, an outer case fitted to the inner case, and a cutting tool holder having both sides fitted into the inner case so as to be insertable / removable. Since the cutting tool holding member is formed so that the cutting tool can be clamped with the cutting blade protected, the cutting tool holding member storing the cutting tool is inserted into the inner case. Thus, both side portions of the sandwiching plate are in sliding contact with the inner wall surface of the inner case, and the holding state of the cutting tool by the pair of sandwiching plates in the inner case can be stabilized. Therefore, even if the storage case is handled roughly, it is possible to reliably avoid the inconvenience that the cutting tool is swayed in the inner case and the blade edge collides with the inner wall surface of the inner case.
[0041]
And since a pair of clamping board can employ | adopt the same shape, it can contribute to reduction of component cost compared with the case where a different kind of holding member is employ | adopted like the past.
[0042]
According to the second aspect of the present invention, since the pair of clamping plates of the cutting tool holding member is formed so as to be foldable into two via the connecting portion, the member that holds the cutting tool is substantially only one member. A further reduction in the number of parts can be realized, which can contribute to a reduction in manufacturing costs.
[0043]
Since each holding plate is provided with a storage recess on the opposite surface, the cutting tool can be stored in a stable state by fitting the cutting tool into the storage recess.
[0044]
According to the third aspect of the present invention, since the sliding contact portions formed so as to be in sliding contact with the inner wall surface of the inner case are provided at both ends of the sandwiched plate in the folded state, these sliding contact portions are in the interior. It is possible to reliably prevent the holding plate housed in the inner case in close contact with the inner wall surface of the case.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a cutting tool storage case according to the present invention.
2 is a partially cutaway assembly perspective view of the storage case shown in FIG. 1, wherein (a) is a state in which the cutting tool is mounted on the assembled cutting tool holding member, and (b) is a state of the cutting tool. The attached cutting tool holding member is shown in a state of being housed in the housing case.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a perspective view showing another embodiment of the cutting tool holding member in a state where each clamping plate is unfolded.
5A and 5B are perspective views showing a storage case of a conventional cutting tool, in which FIG. 5A is a partially cutaway exploded perspective view of the storage case, and FIG. 5B is a partially cutaway assembly perspective view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,1a Storage case 2 Inner case 21 Insertion port 22 Swelling end part 23 Locking protrusion 3 Outer case 31 Mounting opening 32 Locking recessed part 4, 4a Cutting tool holding member 41 Holding plate 42 Holding plate main body 42a Storage groove 42b Storage part 43 Sliding contact portion 44 Connecting portion 45 Storage groove 45a Large diameter groove portion 45b Small diameter groove portion D Cutting blade D1 Cutting blade D2 Handle portion

Claims (3)

A storage case for storing a cutting tool equipped with a cutting blade, an inner case having an opening at one end, an outer case fitted to the inner case, and an inner case that can be inserted into and removed from the inner case. The cutting tool holding member is formed by a pair of holding plates configured to hold the cutting tool while protecting the cutting blade. Storage case for cutting tools. The cutting tool holding member is formed so that the two ends of the pair of sandwiching plates are connected to each other so that the cutting tool holding member can be folded in two. The storage case for a cutting tool according to claim 1. 3. The cutting according to claim 1, wherein the clamping plate has sliding contact portions formed so as to be in sliding contact with the inner wall surface of the inner case at both ends in a state where the cutting tool is clamped . Tool storage case.

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