GB2078567A - A Storage Apparatus for Constructional Components - Google Patents
A Storage Apparatus for Constructional Components Download PDFInfo
- Publication number
- GB2078567A GB2078567A GB8118596A GB8118596A GB2078567A GB 2078567 A GB2078567 A GB 2078567A GB 8118596 A GB8118596 A GB 8118596A GB 8118596 A GB8118596 A GB 8118596A GB 2078567 A GB2078567 A GB 2078567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- run
- toothed
- receiving devices
- storage apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/94—Devices for flexing or tilting travelling structures; Throw-off carriages
- B65G47/945—Devices for flexing or tilting travelling structures; Throw-off carriages tilting endless surfaces, e.g. belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
- B23Q3/15713—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a transfer device taking a single tool from a storage device and inserting it in a spindle
- B23Q3/1572—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a transfer device taking a single tool from a storage device and inserting it in a spindle the storage device comprising rotating or circulating storing means
- B23Q3/15724—Chains or belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/10—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of magazines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/12—Storage devices mechanical with separate article supports or holders movable in a closed circuit to facilitate insertion or removal of articles the articles being books, documents, forms or the like
- B65G1/127—Storage devices mechanical with separate article supports or holders movable in a closed circuit to facilitate insertion or removal of articles the articles being books, documents, forms or the like the circuit being confined in a vertical plane
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
The apparatus comprises an endless toothed belt 1 guided and moved by means of toothed pulleys 2 past a component delivery and/or reception station, for example a tool- changing station at a machine tool. The belt carries receiving devices 4 of resilient material for releasably holding the components (tools) to be stored, or alternatively, the belt carries retaining means of resilient material for holding the receiving devices. In order to position the receiving devices 4 in the delivery or reception station, a guiding device comprises a roller 5, in contact with one side 8 of the belt and two pairs of further rollers 6 contacting the other side of the belt 15 located in the zone of movement of the belt 1 adjacent the delivery or reception station for twisting the run of the belt 1 passing through said station. <IMAGE>
Description
SPECIFICATION
Apparatus for the Storing of Constructional
Components, for Example Tools for a Machine
Tool
This invention relates to an apparatus for the
storing of constructional components, for
example workpieces or tools, of the kind in which
the components are held on stand-by in the
storage apparatus and when required are made
available for delivery at a predetermined station the storage apparatus.
Inside the storage apparatus, the components
are carried by a rotating storage device, for
example, a pulley or endless chain which has
receiving means for holding the components.
Such a storage apparatus is used, for example, as
a tool storage in machine tools. However, it can
also be used inter alia as workpiece storage
means in lathes.
The invention relates to a storage apparatus
using an endless chain. In general, the chain is
formed by pivotably interconnected metal links
which either carry receiving means for the tools or
themselves are constructed as receiving means.
All these storage apparatus constructions have
the considerable disadvantage that they have a
varying amount of clearance between the
individual tool-receiving means. Positioning the
tool-receiving means in the accurate manner
required in the tool-changing station of the
storage apparatus therefore requires a relatively
elaborate construction of the chain or the like,
since the storage apparatus must be constructed
accurately and every tool-receiving means rigidly,
in order to be able to change tools via gripper
devices, without mechanical jamming, and
without an impermissible degree of wear. Such
construction results in a relatively heavy storage
apparatus, and the drive must be dimensioned
accordingly. The speed of rotation of the storage
apparatus is also influenced by its inertia.The
speed cannot therefore be increased as required,
if unjustifiably elaborate and therefore expensive
storage apparatus constructions are to be
avoided.
Another negative result of the heavy weight of
the prior art storage apparatuses is that if they are
to be disposed on a moving machine carriage or if
they are attached in some other way, they must
be transported as a fixed component of the
machine together therewith, as is the case, for
example, with manufacturing cells.
Another disadvantage of the prior art chain
storage constructions is the noise which the storage apparatus produces as it moves and
which increases when the speed of rotation thereof increases.
To enable a large number of constructional ~components to be accommodated in a very small
space in the storage apparatus, in the majority of
constructions the components are disposed axis
parallel with the drive and guide pulleys. Also in
the interests of optimum utilisation of the space
available, the storage apparatus is usually so disposed in relation to the machine that together therewith it requires the minimum floor space. As a rule the storage apparatus is then constructed with the tools lying at right angles to the machine working spindle. For the exchange of tools between the tool storage apparatus and the working spindle a tilting device is then required which moves the tool out of its position in the storage apparatus and into a position parallel with the machine tool working spindle. In other arrangements the tool-changing device moves accordingly.
In any case, up to the present this rather elaborate mechanism had to be used in order to maintain the aforementioned advantages (maximum number of storage places, most convenient arrangement of the storage apparatus in relation to the machine).
The invention aims at achieving the following results: the storage apparatus is simplified and rendered lighter and quieter in comparison with the known chain and chain-like storage devices. It is to move at a higher speed of rotation than heretofore, and the cost of its manufacture is to be reduced.
Positioning errors of the storage and changing means are to be permissible within wider limits than hitherto, without any adverse effect on the operational efficiency of the system. Another object is to reduce the expense of possibly having to move the constructional components out of their position in the storage apparatus into the position necessary for the operation of the changing means.
Accordingly, the present invention consists in an apparatus for the storing of constructional components, for example tools for a machine tool, comprising a frame in which toothed pulleys are rotatably mounted via which an endless toothed belt is guided and moved past a component delivery and/or reception station of the apparatus, said belt carrying receiving devices of a resilient material for holding the components to be stored, or retaining means of resilient material for holding the receiving devices, and at least one guiding device, located in the zone of movement of the toothed belt adjacent the delivery and/or reception station, for twisting the run of the belt running through the delivery and/or reception station, one such guiding device being disposed in the running direction of such belt run upstream of the delivery and/or reception station or therein.
Advantageously, the receiving devices for holding the constructional components to be stored, or the retaining means for holdcg the receiving devices, are made of the same material as the belt, and form together with the toothed belt a unit of homogeneous material.
Conveniently, the device for twisting the run of the toothed belt comprises a guide roller which is in contact with the toothed surface of the belt and at least one pair of clamping rollers arranged coaxially in spaced apart relationship, the pair of clamping rollers being located on the side of the guide roller which faces the belt run and in the peripheral zone of one of two belt-run-contacted quadrants of the guide roller axis-parallel therewith at an axial distance, which corresponds to the sum of the radius of the guide roller plus the thickness of the toothed belt plus the radius of the clamping roller, the axis of the guide roller lying in relation to the axis of a belt drive pulley at an angle in the range of from 0 to 900.
If required, a pair of clamping rollers is disposed on the periphery of each of the two beltrun-contacted quadrants.
In order that the invention may be more readily understood, reference is made to the accompanying drawings which illustrate diagrammatically and by way of example embodiments thereof, and in which: Figure 1 is a partial elevation of the storage apparatus according to the invention,
Fig. 2 shows a portion of a toothed belt with a receiving device for holding constructional components, and
Fig. 3 shows an embodiment of the device for twisting the toothed belt.
Referring to Fig. 1, an endless toothed belt 1 is driven by a toothed pulley 2 mounted in a frame (not shown) and connected to a driving motor.
The toothed belt 1 is guided over one or more other toothed pulleys (not shown). Arranged on the surface of the belt facing away from the toothed surface, are receiving devices 4 for the releasable holding of the constructional components to be stored. The receiving devices 4 are made of a resilient material. In a particularly advantageous embodiment of the invention, they are made of the same material as the belt 1 and form therewith a unit of homogeneous material.
Fig. 2 shows how webs 3 of resilient material can also be arranged on the toothed belt 1, such webs 3 serving to carry the receiving devices 4' for holding the constructional components. In an advantageous embodiment the webs are made of the same material as the belt and form together therewith a unit of homogeneous material. The receiving devices 4; 4' can be constructed both to receive the constructional components to be stored axis-parallel in relation to the axis of rotation of the toothed pulley 2, as shown in Figs.
1 and 2, and also to receive the constructional components radially (not shown).
Fig. 3 shows diagrammatically an embodiment of a device for twisting the toothed belt. For the sake of clarity, Fig. 3 is shown rotated through 900 in relation to Fig. 1. The toothed belt 1 is guided between a toothed guide roller 5 and two pairs of clamping rollers 6. The guide of deflecting roller 5 may alternatively be constructed without teeth. Each of the pairs of clamping rollers 6, of which only the roller nearest to the observer is shown in this view, is arranged in the peripheralzone of a belt-run-contacted quadrant of the guide roller 5. The pairs of clamping rollers may be arranged at various places in this peripheral zone. Only one pair of clamping rollers 6 may alternatively be arranged in one or the other of the two quadrants.The axial distance between the clamping roller 6 and the guide roller 5 corresponds to the sum of the two radiuses plus the thickness of the toothed belt.
In this construction the axis of the guide roller 5 lies at an angle of 900 to the axis of the drive pulley 2. A comparison with Figs. 1 and 2 shows that for the sake of clarity Fig. 3 is shown rotated through 900 in relation to Fig. 1.
This device for twisting the belt run is disposed in the component delivery and/or reception station of the storage apparatus. As Fig. 3 shows, during its movement through this device the belt run is twisted through 900, the twisting of the belt starting already upstream of the device. Until it passes the second pair of clamping rollers 6, the belt remains in the twisted position, and is then twisted back automatically into its original position.
If the axis of the guide roller 5 lies at an angle of 0 to the axis of the drive pulley 2, i.e. parallel therewith, the belt run is not twisted when it runs through the device. The axis of the guide roller 5 is disposed at the same angle in relation to the axis of the drive pulley 2, in accordance with the angle between the axial position of the tools inside the storage apparatus and the axial position in which the tools are to be passed to a charging device. Such angle lies in the range from 0 to 900.
A first such device for twisting the run of the belt may be disposed upstream of the delivery and/or reception station of the storage apparatus, and a second such device may be disposed downstream thereof. For this purpose it is sufficient for each device to have only one pair of clamping rollers 6.
In this description of the function of the device for twisting the belt run, it was assumed that the device is mounted rigidly on the storage apparatus in the predetermined axial position of the guide roller 5 in relation to the drive pulley 2.
As already explained, the belt run is always twisted as it runs through the device. However, the device may alternatively be so mounted on the storage apparatus that the axis of the guide roller 5 lies parallel with the axis of the drive pulley 2. in such case the belt run is not twisted as it runs through the device. If, for the purpose of delivering or receiving a tool, a tool-receiving means must be provided in the delivery and/or reception station of the storage apparatus at a predetermined angle, which differs from 0 in relation to the axis of the drive pulley 2, the whole device can also be turned about the neutral fibre of the belt, the belt run in the device being twisted. However, for this purpose a drive and corresponding guide elements are required. The result is therefore greater technical outlay in: comparison with the rigidly mounted device,;for which reason the latter is regarded as the mst advantageous.
Instead of the guide roller 5 and the pair of clamping rollers 6, the belt run may alternatively have a simple sliding guide which extends twisted over its length by the angular amount by which
the axis of the constructional component is to be ;turned in relation to its position inside the storage
apparatus. As it runs through the guide, the belt
run is twisted. However, in comparison with the
device having a guide roller 5 and a pair of
clamping rollers, this device has the disadvantage
that the sliding friction causes wear on the belt,
so that the device illustrated in Fig. 3 is
advantageous, even in comparison with this
relatively simple device.
In comparison with the prior art chain-type
storage apparatus with metal links, the invention
has the following advantages: the use as a
storage apparatus of a toothed belt and its
construction according to the invention results in
a reduced mass of the storage apparatus,
enabling the driving speeds to be more
satisfactorily optimised and a smaller drive to be
used, and a reduced amount of energy expended
for the drive. The reduced mass of the storage
apparatus is also advantageous in machines in
which the whole storage apparatus is carried and
moved by one constructional assembly of the
machine. In this case also the apparatus of the
invention enables the drive to be reduced, with a
resultant saving of energy.
Storage apparatus often also form an integral
component of a compactly constructed machine,
for example, in a manufacturing cell. In such case
the reduced mass of the storage apparatus results
in lower demands for the transportation of the
machine.
Further important advantages of the invention
can be gathered from the solution of the problem
of the invention, that is to move tools from their
axial position in the storage apparatus into the
axial position required by the charging device, for
example a tool-changing device.
The use of a resilient storage apparatus, i.e. the
toothed belt, enables the advantage of non-slip
power transmission between the drive pulley and
the toothed belt to be combined with the
advantageous use of the resilience thereof, which
is present transversely of its driving direction. The
twisting of the belt about its neutral fibre can be
carried out at little expense, by means of a very
simple device. The construction according to the
invention therefore also reduces the costs of the
storage apparatus by providing a very simple
device for moving the constructional components
out of their position in the storage apparatus into
the position required by the charging device.
An important advantage over prior art metal
storage chains is that the noise made by the
movement of the storage apparatus is reduced.
The toothed belt runs almost soundlessly. This
creates better working conditions for the operator
of the machine.
It is simple to manufacture the storage
apparatus of the invention. Due to the small number of moving parts used, it operates more reliably. Advantages are also to be gained from the arrangement of the constructional components to be stored in the receiving devices 4;4' which have a resilient base member. As a result, the constructional members are not retained completely rigidly in their stored position, but are stored resiliently within certain limits. This resilience allows possible positioning inaccuracies to be evened out and enables the charging device, for example, a tool gripper and its guide elements.
to be constructed more simply and therefore more cheaply.
Claims (4)
1. An apparatus for the storing of constructional components, for example tools for a machine tool, comprising a frame in which toothed pulleys are rotatably mounted via which an endless toothed belt is guided and moved past a component delivery and/or reception station of the apparatus, said belt carrying receiving devices of a resilient material for holding the components to be stored, or retaining means of resilient material for holding the receiving devices, and at least one guiding device, located in the zone of movement of the toothed belt adjacent the delivery and/or reception station, for twisting the run of the belt running through the delivery and/or reception station, one such guiding device being disposed in the running direction of such belt run upstream of the delivery and/or reception station or therein.
2. An apparatus as claimed in claim 1. wherein the receiving devices for holding the constructional components to be stored, or the retaining means for holding the receiving devices, are made of the same material as the belt, and form together with the toothed belt a unit of homogeneous material.
3. An apparatus as claimed in claim 1 or 2, wherein the device for twisting the run of the toothed belt comprises a guide roller which is in contact with the toothed surface of the belt and at least one pair of clamping rollers arranged coaxially in spaced apart relationship, the pair of clamping rollers being located on the side of the guide roller which faces the belt run and in the peripheral zone of one of two belt-run-contacted quadrants of the guide rollers axis-parallel therewith at an axial distance, which corresponds to the sum of the radius of the guide roller plus the thickness of the toothed belt plus the radius of the clamping roller, the axis of the guide roller lying in relation to the axis of a belt drive pulley at an angle in the range of from 0 to 900.
4. An apparatus for the storing of constructional components, substantially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD80221952A DD159247A3 (en) | 1980-06-19 | 1980-06-19 | COMPONENT MEMORY, ESPECIALLY FOR STORING AND PROVIDING TOOLS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2078567A true GB2078567A (en) | 1982-01-13 |
| GB2078567B GB2078567B (en) | 1984-08-22 |
Family
ID=5524801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8118596A Expired GB2078567B (en) | 1980-06-19 | 1981-06-17 | Storage apparatus for conctruction components |
Country Status (6)
| Country | Link |
|---|---|
| CS (1) | CS245714B1 (en) |
| DD (1) | DD159247A3 (en) |
| DE (1) | DE3114498A1 (en) |
| FR (1) | FR2484886A1 (en) |
| GB (1) | GB2078567B (en) |
| SU (1) | SU1165536A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3124170A1 (en) * | 2015-07-27 | 2017-02-01 | Liechti Engineering AG | Chain cartridge for holding tools |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH677204A5 (en) * | 1988-09-02 | 1991-04-30 | Fischer Georg Fms Drehtech |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1249631A (en) * | 1968-01-17 | 1971-10-13 | Richards & Co Ltd George | Tool change mechanism |
| DE2324082A1 (en) * | 1970-09-04 | 1974-11-28 | Walter Prof Dipl Ing Guttropf | MACHINING CENTER |
| US3987909A (en) * | 1975-10-30 | 1976-10-26 | Cincinnati Milacron, Inc. | Tool storage mechanism |
| US4122597A (en) * | 1977-05-02 | 1978-10-31 | The Monarch Machine Tool Company | Tool utilization mechanism |
-
1980
- 1980-06-19 DD DD80221952A patent/DD159247A3/en not_active IP Right Cessation
-
1981
- 1981-04-10 DE DE3114498A patent/DE3114498A1/en not_active Withdrawn
- 1981-04-29 FR FR8108596A patent/FR2484886A1/en active Granted
- 1981-05-06 CS CS813375A patent/CS245714B1/en unknown
- 1981-05-06 SU SU817771798A patent/SU1165536A1/en active
- 1981-06-17 GB GB8118596A patent/GB2078567B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3124170A1 (en) * | 2015-07-27 | 2017-02-01 | Liechti Engineering AG | Chain cartridge for holding tools |
| CN106392729A (en) * | 2015-07-27 | 2017-02-15 | 利奇蒂工程股份公司 | Chain magazine for holding tools |
| US10369671B2 (en) | 2015-07-27 | 2019-08-06 | Gf Machining Solutions Ag | Chain magazine for holding tools |
| TWI689372B (en) * | 2015-07-27 | 2020-04-01 | 瑞士商Ｇｆ機械公司 | Chain magazine for holding tools, machine tool having the same and use of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CS245714B1 (en) | 1986-10-16 |
| DD159247A3 (en) | 1983-03-02 |
| GB2078567B (en) | 1984-08-22 |
| DE3114498A1 (en) | 1982-03-18 |
| FR2484886B1 (en) | 1985-03-29 |
| SU1165536A1 (en) | 1985-07-07 |
| CS337581A1 (en) | 1984-06-18 |
| FR2484886A1 (en) | 1981-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |