PROTECTIVE PACKING INSERTS FOR MACHINE TOOL HOLDERS
The disclosed subject matter is directed to a packing insert for holding a holder and a kit including a container configured to hold the insert. The insert including a base portion having a bottom side and a top side and a support member axially protruding from the top side of the base member, where the support member is configured to be at least partially received within a central bore of the holder received within the packing insert.
The disclosed subject matter is directed to protective packing inserts for machine tool holders, and in particular to packing inserts for securing the holders in a container.
The term “machine tools” as used herein refers to cutting tools, cutters, drills, mills, etc.
Due to the delicate nature of cutting tools and their holders, transportation and storage thereof presents a problem. Illustrated in
The disclosed subject matter is directed to a packing insert configured to securely hold and retain in place a holder of a machine tool within a container while having minimal contact with the peripheral surface of the holder and in particular a shank portion thereof. The packing insert can be also used as a support/holder for the tool holders outside the container, e.g. on a working bench surface, during storage, etc.
The packing insert of the disclosed subject matter is configured to securely hold and protect the holder and in particular the shank portion thereof, preventing damage and fretting wear on the outer peripheral surface of the shank portion, which might be caused, for example, during transport e.g. by wobbling of the holder within a container, and accidental contact of the holder with the walls of the container.
In accordance with one aspect of the disclosed subject matter there is provided a packing insert for holding a holder comprising a base portion having a bottom side and a top side and a support member axially protruding from the top side of the base member, wherein the support member is configured to be at least partially received within a central bore of the holder received within the packing insert.
In accordance with an example of this aspect, there is further provided a circumferential wall configured to at least partially abut at least a bottom portion of an outer periphery of a shaft of the holder when received within said packing insert. In accordance with an example, the circumferential wall is provided with inwardly indented portions configured to abut the outer periphery of the shaft. In accordance with an example, the circumferential wall tapers away from the base portion.
In accordance with an example, the circumferential wall is continuous. In accordance with yet an example, the circumferential wall is provided with inwardly protruding support members.
In accordance with an example, the base portion of the packing insert is a web comprised of a plurality of strips.
In accordance with another example, the support member has a frusto-conical configuration.
In accordance with another aspect of the disclosed subject matter there is provided a packing insert for holding an insert, the packing insert comprising a collar member having an inner surface and an outer surface and a plurality of support legs extending from the outer surface of the collar member, wherein each of the plurality of support legs has a shoulder portion connecting the support legs to the collar member, wherein the collar member is configured to receive therethrough a shaft portion of the holder and wherein the shoulder portion is configured to support thereupon a flange of the holder.
In accordance with an example of the disclosed subject matter, a bottom, free end of the support legs is provided with an outwardly bent leg portion.
In accordance with yet an aspect of the disclosed subject matter there is provided a packing insert comprising a circumferential wall having an outer wall surface and an inner wall surface, a top edge and a bottom edge and wherein the packing insert is provided with at least two fin like support members extending inwardly at least along the top edge of the inner wall surface, and wherein the width of the support members corresponds to the width of a flange portion of a holder, the flange extending outwardly from a shaft portion of the holder.
In accordance with another aspect of the disclosed subject matter there is provided a container receptacle, having a base member and a circumferentially extending wall having an outer surface and an inner surface defining an inner space configured for accommodating a holder therewithin, wherein the wall is provided with at least two inwardly protruding bulging members configured to at least partially being received within a slit provided on the flange portion of said holder.
In accordance with yet an example, the disclosed subject matter is directed to a kit comprising a packing insert for holding a holder, the insert comprising a base portion having a bottom side and a top side and a support member axially protruding from the top side of the base member, wherein the support member is configured to be at least partially received within a central bore of the holder received within the packing insert and container comprising a container receptacle and a cover, the container receptacle, having a base member and a circumferentially extending wall having an outer surface and an inner surface defining an inner space configured for accommodating a holder therewithin, wherein the wall is provided with at least two inwardly protruding bulging members configured to at least partially being received within a slit provided on the flange portion of said holder, and wherein the insert is configured to being received within the inner space of the container receptacle.
In order to better understand the subject matter that is disclosed herein and to exemplify how it may be carried out in practice, embodiments will now be described, by way of non-limiting examples only, with reference to the accompanying drawings, in which:
a top perspective view (
a top view (
a bottom view (
a top perspective view (
a top view (
a cross section view taken along lines A-A in
a vertical cross section (
a cross section taken vertically of a holder received within a container comprising a receptacle of
a cross section taken along D-D in
a side perspective view of the exploded view of example illustrated in
Holders for a machine tool typically comprise a holder body also referred to as an arbor. The arbor (for example as seen in
In operation, the machine tool is mounted over or received within the tool mounting portion and a spindle or a retention knob, or both, are articulated over the shank portion.
In order to provide precise machine intolerance it is crucial that the surface of the shank portion of the holder has full contact with the surface of a corresponding spindle socket. If full contact is not established relative movement between the tool holder and the spindle can occur, especially under heavy machinery loads. Such movement can produce machining errors and thus machine tolerance will not be maintained. It will also cause fretting wear in the tool shank and spindle and reduce the life of the machine tool.
The disclosed subject matter is directed to a packing insert configured to securely hold and retain in place a holder of a machine tool within a container while having a minimal contact with the peripheral surface of the holder and in particular the shank portion thereof. The packing insert can be also used as a support/holder for the tool holders outside the container, e.g. on a working bench surface, during storage, etc.
The packing insert of the disclosed subject matter is configured to securely hold and protect the holder and in particular the shank portion thereof, preventing damage and fretting wear on the outer peripheral surface of the shank portion, which might be caused, for example, during transport e.g. by wobbling of the holder within a container, and accidental contact of the holder with the walls of the container.
The inserts in accordance with the disclosed subject matter are made of a plastic material, such as HDPE, PP, and the like,
It will be appreciated that while the wall 258 has a continuous surface, the support member 250 can have a different design, e.g. of a non continuous wall. The height H can also differ and can be equal or even be longer than height h of the circumferential wall of the insert 200.
The insert 200 of the disclosed subject matter is configured to hold and stably support a machine tool holder. The holder can be either a holder 120 having a circular shaft (seen in
As seen in
The example illustrated in
Extending away and downwards from the edge of each shoulder portion 365 are corresponding four wall surfaces 366 of the legs 360, extending at an angle outwards and downwards respective to the collar member 350. The wall surfaces 366 have a bottom edge, which extends lower than the bottom edge 354 of the collar 350 so as to allow the shaft S to be partially received within the insert 300 and at the same time to prevent the bottom edge of the shaft when received within the collar from coming in direct contact with the surface on which the ends of the legs 360 are placed (seen best in
When assembled, the insert 300 is placed into the receiving portion of the container 100 and the holder, with its shaft portion S facing towards the base of the container is introduced into the collar 350. Due to the structure of the insert of this example, the bottom portion of the shaft will be spaced apart from the base of the container 100, the mid section will be retained by the collar such that the outer surface of the shaft is in direct contact with the inner surface 356 of the collar member and the bottom surface of the flange extending between the shaft and the tool mounting portion M, will abut the shoulder portion 365 of the insert legs 360.
Extending inwardly to the center of the insert 400 from the base 426 towards the top edge 422 of the insert are a plurality of thin, fin like support members 450 (six are present in the illustrated example, although it will be appreciated that this number can vary in the range of 2 to n number of such support members). The support members 450 have a free top edge 452 and a free side edge 454 extending from the top edge of the insert 422 towards the base 426 of the insert 400. The width w of the support member 450 substantially corresponds to the width W of the flange member F of the holder circumferentially extending outwards from the shaft portion S. The length L of the support member corresponds to the height l measured from the bottom edge of the shaft of the tool holder 120 to the bottom edge of the flange F. As seen best in
Typical v-flange holder for example, comprises two laterally extending rail like slits 101 at the flange portion F, at least partially extending through the flange F (as best seen in
The size and dimensions of the bulges are such that when in contact with the holder slit, each bulge is received within at least a portion of the respective rail like slit, with near zero tolerance. In accordance with an example, when the bulges are made from a relatively elastic material, they can be sized to dimension exceeding that of the slit, such that some amount of force is applied to the holder when slid over the bulge. As seen in
Claims
1. A packing insert for holding a holder, comprising a base portion having a bottom side and a top side, and a support member axially protruding from the top side of the base portion, wherein the support member is configured to be at least partially received within a central bore of the holder received within the packing insert.
2. The packing insert in accordance with claim 1, further comprising a circumferential wall upwardly extending from the base portion in the direction of the support member and configured to at least partially abut at least a bottom portion of an outer periphery of a shaft of the holder when received within said packing insert.
3. The packing insert in accordance with claim 2, wherein the circumferential wall is provided with inwardly indented portions configured to abut the outer periphery of the shaft.
4. The packing insert in accordance with claim 2, wherein the circumferential wall tapers away from the base portion.
5. The packing insert in accordance with claim 2, wherein the circumferential wall is continuous.
6. The packing insert in accordance with claim 2, wherein the circumferential wall is provided with inwardly protruding support members.
7. The packing insert in accordance with claim 1, wherein the base portion of the packing insert is a web comprising a plurality of strips.
8. The packing insert in accordance with claim 1, wherein the support member has a frusto-conical configuration.
9. A packing insert for holding a holder, the packing insert comprising a collar member having an inner surface and an outer surface, and a plurality of support legs extending from the outer surface of the collar member, wherein each support leg of the plurality of support legs has a shoulder portion substantially laterally extending from a top edge of the collar member to connect the plurality of support legs to the collar member, wherein the collar member is configured to receive therethrough a shaft portion of the holder, and the shoulder portion is configured to support thereupon a flange of the holder.
10. The packing insert in accordance with claim 9, wherein a bottom, free end of the plurality of support legs is provided with an outwardly bent leg portion.
11. A packing insert, comprising:
- a circumferential wall having an outer wall surface and an inner wall surface, a top edge and a bottom edge; and
- at least two fin-shaped support members extending inwardly at least along the top edge of the inner wall surface,
- wherein the width of the at least two fin-shaped support members is less than or corresponds to a width of a flange portion of a holder, the flange portion extending outwardly from a shaft portion of the holder, and the top edge of the at least two fin-shaped support members is configured to support at least a portion of the flange portion thereon.
12. A container receptacle, comprising a base member and a circumferentially extending wall having an outer surface and an inner surface defining an inner space configured for accommodating a holder therewithin, wherein the wall comprises at least two inwardly protruding bulging members configured for at least partially being received within a slit provided on a flange portion of said holder.
13. A kit, comprising:
- a. a packing insert for holding a holder, the packing insert comprising a base portion having a bottom side and a top side, and a support member axially protruding from the top side of the base portion, wherein the support member is configured to be at least partially received within a central bore of the holder received within the packing insert; and
- b. a container comprising a container receptacle and a cover, the container receptacle having a base member and a circumferentially extending wall having an outer surface and an inner surface defining an inner space configured for accommodating a holder therewithin, wherein the wall comprises at least two inwardly protruding bulging members configured for at least partially being received within a slit provided on a flange portion of said holder,
- wherein the packing insert is configured to be received within the inner space of the container receptacle.
Type: Application
Filed: Apr 12, 2015
Publication Date: Feb 2, 2017
Inventor: Nir Hadar (Kibbutz Shefayim)
Application Number: 15/302,894