GB2559386A - Device for the extraction of machining dust - Google Patents

Device for the extraction of machining dust Download PDF

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Publication number
GB2559386A
GB2559386A GB1701823.5A GB201701823A GB2559386A GB 2559386 A GB2559386 A GB 2559386A GB 201701823 A GB201701823 A GB 201701823A GB 2559386 A GB2559386 A GB 2559386A
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GB
United Kingdom
Prior art keywords
central portion
opening
connector portion
nozzle portion
machining
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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
Application number
GB1701823.5A
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GB2559386B (en
GB201701823D0 (en
Inventor
Brown Adam
Robert Easter-Robinson Rowan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikken Kosakusho Europe Ltd
Original Assignee
Nikken Kosakusho Europe Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Nikken Kosakusho Europe Ltd filed Critical Nikken Kosakusho Europe Ltd
Priority to GB1701823.5A priority Critical patent/GB2559386B/en
Publication of GB201701823D0 publication Critical patent/GB201701823D0/en
Priority to PCT/EP2018/052832 priority patent/WO2018141972A1/en
Priority to US16/482,339 priority patent/US11383340B2/en
Priority to JP2019541222A priority patent/JP2020506072A/en
Priority to EP18703580.3A priority patent/EP3576906B1/en
Publication of GB2559386A publication Critical patent/GB2559386A/en
Application granted granted Critical
Publication of GB2559386B publication Critical patent/GB2559386B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2230/00—Details of chip evacuation
    • B23C2230/08—Using suction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304088—Milling with means to remove chip

Abstract

A device 10 for the extraction of machining dust comprises a body 12 configured to be coupled to a section of a machining machine. The body 12 has a first opening 11 at a first end thereof and a second opening 13 at a second end thereof. The first end is opposite the second end, and the first opening 11 is configured to receive a tool holder therethrough and the second opening 13 configured to receive a cutting tool therethrough. A Venturi mechanism 14 connected to the body 12 and in fluid communication with said second opening 13. The Venturi mechanism (14) is configured to facilitate the suction of machining dust through the second opening 13 and through the Venturi mechanism 14. The body 12 may include a connector portion 15, a central portion 16 and a nozzle portion 17 with the connector portion and the nozzle portion being manufactured by 3D printing.

Description

(71) Applicant(s):
Nikken Kosakusho Europe Ltd The Euro-Centre Precision House,
Barbot Hall Industrial Estate, ROTHERHAM, South Yorkshire, S61 4RL, United Kingdom (72) Inventor(s):
Adam Brown
Rowan Robert Easter-Robinson (56) Documents Cited:
GB 0425736 A US 4036308 A
US 20040191011 A1
JPS56102452 (58) Field of Search:
INT CL A47L, B08B, B23B, B23Q, B24B, B25D, B28D Other: WPI, EPODOC (74) Agent and/or Address for Service:
Franks & Co Limited
Jessops Riverside, Brightside Lane, SHEFFIELD, S9 2RX, United Kingdom (54) Title of the Invention: Device for the extraction of machining dust Abstract Title: A device for extraction of dust (57) A device 10 for the extraction of machining dust comprises a body 12 configured to be coupled to a section of a machining machine. The body 12 has a first opening 11 at a first end thereof and a second opening 13 at a second end thereof. The first end is opposite the second end, and the first opening 11 is configured to receive a tool holder therethrough and the second opening 13 configured to receive a cutting tool therethrough. A Venturi mechanism 14 connected to the body 12 and in fluid communication with said second opening 13. The Venturi mechanism (14) is configured to facilitate the suction of machining dust through the second opening 13 and through the Venturi mechanism 14. The body 12 may include a connector portion 15, a central portion 16 and a nozzle portion 17 with the connector portion and the nozzle portion being manufactured by 3D printing.
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Figure GB2559386A_D0009
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-1DEVICE FOR THE EXTRACTION OF MACHINING DUST
Field of the Invention [0001] The present invention relates to a device for the extraction of machining dust, in particular, for the extraction of composite dust particles.
Background of the Invention [0002] A machining process, for example milling, drilling, trimming etc., is usually employed to an article in a number of industries to get the article in a state suitable for its intended use.
[0003] Such processes involve controlled material removal by means of a cutting tool. Material waste, for example dust particles, is generated during the machining process which if not removed from the vicinity of the material extraction point can lead to flaws in the finished article and/or damage to the cutting tool.
[0004] A known method for the removal of material waste is by means of a cooling fluid which also acts as a medium for regulating the working temperature of the cutting tool. In some applications, the use of a cooling fluid is undesirable as the cooling fluid would alter the characteristics of the work piece.
[0005] Another method for the removal of material waste is by means of a dust extractor incorporating a fan or impeller, coupled to the machine. However such systems, especially for industrial sized work, require a lot of floor space in addition to the space for the machining equipment. In addition, such systems are not suitable for the extraction of large fragments of material waste.
[0006] For composite machine operations, machining dust is both an irritant raising health and safety issues but also abrasive, causing wear to spindles and guideways. Additionally it is electrically conductive and has the potential to short out systems.
-2[0007] These issues prevent machining of composites on existing standard equipment, requiring the purchase of bespoke machining platforms having integral extraction and sealed mechanical and electrical systems. This can be a very expensive purchase especially if a project requiring the machining of composites is a one-off or such projects are few and far between.
[0008] There is therefore a need for a simplified means for the removal of composite material waste which does not alter the characteristics of a work piece and/or require a lot of floor space to install.
[0009] In addition, there is a need for a device which allows existing equipment to be adapted for use for the machining of composite materials.
Summary of the Invention [0010] According to a first aspect, there is provided a device for the extraction of machining dust comprising:
a body configured to be coupled to a section of a machining machine, said body having a first opening at a first end thereof and a second opening at a second end thereof, the first end being opposite the second end, said first opening configured to receive a tool holder therethrough and said second opening configured to receive a cutting tool therethrough; and a Venturi mechanism connected to the body and in fluid communication with said second opening;
wherein said Venturi mechanism is configured to facilitate the suction of machining dust through the second opening and through the Venturi mechanism.
[0011] The present invention provides a simplified means for the removal of material waste which does not alter the characteristics of a work piece and/or require a lot of floor space to install.
-3[0012] The present invention also provides a means for adapting existing machining equipment for composite material applications.
[0013] The present invention also comprises no moving parts. As such, it is easier and cheaper to manufacture than dust extractor attachments which incorporate fans or impellers to assist in the removal of machining dust from the vicinity of the material extraction point. In addition, large fragments can be extracted without damage to the device as it does not comprise any moving parts.
[0014] Preferably, the Venturi mechanism is a Venturi pump.
[0015] In exemplary embodiments, the Venturi mechanism defines an aspirator pump type mechanism.
[0016] Preferably, the body comprises a central portion and the Venturi mechanism is connected to the body at the central portion.
[0017] In exemplary embodiments, the central portion is substantially shaped like a conical frustum.
[0018] In exemplary embodiments, the central portion is substantially cylindrical in shape.
[0019] An advantage of having the central portion substantially shaped like a conical frustum or a cylinder is that it facilitates the creation of a vortex within the body when the device is in use, thus assisting the extraction of machining dust.
[0020] The central portion is preferably made from a rigid material.
In exemplary embodiments, the central portion is made from a metallic material, for example aluminium, stainless steel etc.
-4[0021] Conveniently, the body comprises a connector portion configured to couple the device to a section of a machining machine, and the first opening forms part of the connector portion. Preferably, the connector portion is configured to couple the device directly to the section of the machining machine.
[0022] In exemplary embodiments, the first opening is substantially circular and is of similar size to the section of the machining machine to which it is to be attached.
[0023] Preferably, the device further comprises a hose clamp for facilitating the coupling of the connector portion of the device to the section of the machining machine.
[0024] The hose clamp may be in any suitable form. In exemplary embodiment, the hose clamp is in the form of a worm drive hose clip.
[0025] The connector portion is preferably made from a rigid material. In exemplary embodiments, the connector portion is made from a metallic material, for example aluminium, stainless steel etc.
[0026] The connector portion may be manufactured by any suitable means, for example by a fabrication process, a casting process or an additive manufacturing (3D printing) process.
[0027] In exemplary embodiments, the connector portion substantially comprises a 3D printable material.
[0028] By having the connector portion substantially of 3D printable material, it can be easily produced onsite and bespoke to the equipment the device is to be used with.
-5[0029] In exemplary embodiments, the connector portion is releasably connected to the central portion.
[0030] Having the connector portion releasably connected to the central portion means that the connector portion can be easily replaced should it become faulty. In addition, it improves the versatility of the device as it can be utilised for different equipment by changing the connector portion as required to match the equipment the device is to be used with.
[0031] The connector portion may be releasably connected to the central portion by any suitable means. In exemplary embodiments, the connector portion is releasably connected to central portion by means of a snap-fit mechanism.
[0032] Instead of the connector portion being releasably connected to the central portion, the connector portion may be integrally formed with the central portion or permanently joined to the central portion.
[0033] In exemplary embodiments, the connector portion is substantially cylindrical in shape.
[0034] Preferably, the body comprises a nozzle portion, and the second opening forms part of the nozzle portion.
[0035] The nozzle portion is preferably made from a rigid material. In exemplary embodiments, the nozzle portion is made from a metallic material, for example aluminium, stainless steel etc.
[0036] In exemplary embodiments, the nozzle portion substantially comprises a 3D printable material.
-6[0037] By having the nozzle portion substantially of 3D printable material, it can be easily produced onsite and bespoke to the cutting tool utilised for the machining process.
[0038] In exemplary embodiments, the nozzle portion is releasably connected to central portion.
[0039] Having the nozzle portion releasably connected to the central portion means that the nozzle portion can be easily replaced should it become faulty. In addition, it improves the versatility of the device as it can be utilised for different cutting tools by changing the nozzle portion as required to match the cutting tool for the machining process the device is to be used with.
[0040] The nozzle portion may be releasably connected to the central portion by any suitable means. In exemplary embodiments, the nozzle portion is releasably connected to central portion by means of releasable fasteners. The releasable fasteners may be a nut and bolt arrangement.
[0041] Instead of the nozzle portion being releasably connected to the central portion, the nozzle portion may be integrally formed with the central portion or permanently joined to the central portion.
[0042] Preferably, the nozzle portion is substantially dome shaped.
[0043] Having the nozzle portion substantially dome shaped facilitates the funnelling of machining dust through the device.
[0044] In exemplary embodiments, the nozzle portion is substantially compound dome shaped.
[0045] Other aspects are as set out in the claims herein.
-7Brief Description of the Drawings [0046] For a better understanding of the invention and to show how the same may be carried into effect, there will now be described by way of example only, specific embodiments, methods and processes according to the present invention with reference to the accompanying drawings in which:
Figure 1 is a schematic view of an embodiment of the device in accordance with the invention;
Figure 2 is another schematic view of the embodiment of figure 1;
Figure 3 is a cross-sectional view of the embodiment of figure 1;
Figure 4 is a cross-sectional view showing the positioning of the embodiment of figure 1 relative to a spindle of a machining machine;
Figure 5 is a schematic view of another embodiment of the device in accordance with the invention attached to a filter bag;
Figure 6 shows the device of figure 5 attached to a milling machine; and
Figure 7 shows the device of figure 1 attached to a machining robot.
Details Description of the Embodiments [0047] There will now be described by way of example a specific mode contemplated by the inventors. In the following description numerous specific details are set forth in order to provide a thorough understanding. It will be apparent however, to one skilled in the art, that the present invention may be practiced without limitation to these specific details. In other instances, well known methods and structures have not been described in detail so as not to unnecessarily obscure the description.
-8[0048] Referring to figures 1 to 4, a first embodiment of a device 10 in accordance with invention is shown. The device 10 is configured to facilitate the removal of machining dust from the vicinity of the material extraction point during a machining process.
[0049] The device 10 comprises a body 12 and a Venturi mechanism 14.
[0050] The body 10 includes a first opening 11 at a first end thereof and a second opening 13 at a second end thereof. The first end is opposite the second end.
[0051] The first opening 11 is configured to receive a tool holder 23 therethrough (see figure 4) and the second opening is configured to receive a cutting tool (not shown) therethrough. The body 10 acts as a cowling for the tool holder 23.
[0052] The body 10 is made up of three sections, a connector portion 15, a central portion 16 and a nozzle portion 17.
[0053] While in the embodiment shown, the connector portion 15, the central portion 16 and the nozzle portion 17 are separate components, it would be understood that adjacent sections of the body 10 may be integrally formed with one another.
[0054] The first opening 11 forms part of the connector portion 15 and the connector portion 15 is configured to couple the device 10 to a section (not shown) of a machining machine (not shown).
[0055] In the embodiment shown, the first opening 11 is substantially circular, although it would be understood that the first opening 11 may be of a different shape just as long as it correspond in shape to the cross-9sectional profile of the section of the machining machine to which it is to be attached.
[0056] The first opening 11 is of similar size to, but slightly wider than, the section of the machining machine to which it is to be attached.
[0057] The connector portion 15 is made of a rigid material, preferably a metallic material although it may be made from any suitable rigid material.
[0058] In exemplary configurations, the connector portion 15 is a 3D printed component. By having the connector portion 15 made from a 3D printable material, it can be easily produced onsite and bespoke to the equipment the device 10 is to be used with. This allows the device 10 to be easily fitted to any spindle/tool holder combination.
[0059] It would be understood that the connector portion 15 may be made from any manufacturing process. It is not necessary for it to be produced via a 3D printing process.
[0060] The connector portion 15 includes a plurality of grooves 151 cut into an upper part of the connector portion 15. The grooves 151 allow the upper part of the connector portion 15 to splay if required. This allows the connector portion 15 to be fitted to section of a machining machine having a cross sectional area the same size as the first opening 11 or slightly larger than the first opening 11.
[0061] The connector portion 15 is releasably connected to the central portion by means of a snap-fit mechanism 24. In the embodiment shown, the snap-fit mechanism 24 is in the form of an annular snap-fit joint, although it would be understood that the connector portion 15 may be releasably connected to the central portion 16 by any suitable means.
-10[0062] Having the connector portion 15 releasably connected to the central portion 16 means that the connector portion 16 can be easily replaced should it become faulty. In addition, it improves the versatility of the device 10 as it can be utilised for different equipment by changing the connector portion 15 as required to match the equipment the device 10 is to be used with.
[0063] The central portion 16 is substantially shaped like a conical frustum and is made from a rigid material, such as a metallic material. It would be understood that the central portion may be of a different shape, for example, the central portion is substantially cylindrical in shape.
[0064] An advantage of having the central portion 16 substantially shaped like a conical frustum (or a cylinder) is that is facilitates the creation of a vortex within the body 12 when the device 10 is in use, thus assisting the extraction of machining dust.
[0065] A third opening 25 in the body 12 is provided on the central portion 16 (see figure 3). The third opening 25 provides a passage for the flow of machining dust entering the body 12 from the second opening 13 out of the body
12.
[0066] The device 10 includes an adapter 26 for facilitating the connection of the central portion 16 with the nozzle portion 17.
[0067] The adapter 26 incorporates a snap-fit mechanism 30 in the form an annular snap-fit joint for connecting the central portion 16 thereto. It would be understood that a different snap-fit arrangement may be utilised.
[0068] The adapter 26 includes a collar 29 which is configured to be housed within the nozzle portion 17, a spout 31 and an outwardly extending flange (see figure 2).
-11[0069] The spout 31 is configured to align with the third opening 25.
[0070] In the embodiment shown, the adapter 26 is made of the same material as the connector portion 16, although a different material may be used for the adapter 26.
[0071] The second opening 13 forms part of the nozzle portion 17 and the nozzle portion 17 is formed of a rigid material, such as a metallic material. In exemplary configurations, the nozzle portion is made from a 3D printable material. In the embodiment shown, the nozzle portion 17 is formed from the same material as the connector portion 15, although it would be understood that it may be formed from a different material.
[0072] By having the nozzle portion 17 substantially of 3D printable material, it can be easily produced onsite and bespoke to the cutting tool utilised for the machining process. The nozzle portion 17 is sized for a required cutting tool stick out and/or fixture clearance.
[0073] The nozzle portion 17 includes an outwardly extending flange 32 which is arranged to mate with the flange 28 of the adapter 26.
[0074] The nozzle portion 17 is releasably connected to central portion 16 via the adapter 26 by means of releasable fasteners (not shown). In the embodiment shown, the nozzle portion 17 and the central portion 16 are configured to be releasably connected by releasable fasteners in the form a nut and bolt arrangement. A plurality of corresponding eyelets 20 are provided on the flanges 28, 32 for the bolts to pass through.
[0075] It would be understood that any suitable means may be utilised to releasably connect the adapter 26 to the nozzle portion 17.
-12[0076] Having the nozzle portion 17 releasably connected to the central portion 16 means that the nozzle portion 17 can be easily replaced should it become faulty. In addition, it improves the versatility of the device 10 as it can be utilised for different cutting tools by changing the nozzle portion 17 as required to match the cutting tool for the machining process the device 10 is to be used with. This provides a modular system that can be quickly adapted to any application. This is due to the fact that the nozzle portion can be manufactured for individual reach or access requirements.
[0077] The nozzle portion 17 is substantially dome shaped. This facilitates the funnelling of machining dust through the device 10. In the embodiment shown, the nozzle portion is substantially a compound dome shaped.
[0078] The Venturi mechanism 14 is in the form of Venturi pump or an aspirator pump type mechanism, and has a main tube 19, a coupling 27 and a hose barb18.
[0079] The coupling 27 is substantially bottle shaped and includes a neck section 27a, a cylindrical wall section 27b, and a shoulder section 27c (see figure 3).
[0080] The neck section 27a is configured to push fit within the spout 31 such that the Venturi mechanism 14 is connected to the body 12 at the central portion 16. The neck section 27a has an inner wall which tapers inwardly in a direction towards the shoulder section 27c of the coupling 27.
[0081] The shoulder section 27c is a sloped shoulder and connects the neck section 27a to the cylindrical wall section 27b.
[0082] The neck section 27a and the shoulder section 27c define a first constricted section within the Venturi mechanism 14 wherein the Venturi mechanism internally first narrows and then expands in cross-sectional area.
-13[0083] The main tube 19 is partially housed within the cylindrical wall section 27b of the coupling 27, and the main tube 19 internally defines a second constricted section within the Venturi mechanism 14 wherein the Venturi mechanism internally first narrows and then expands in cross-sectional area.
[0084] In the embodiment shown, the main tube 19 internally includes a first frustoconical area 19a, a second frustoconical area 19b and a cylindrical area 19c. The first and second frustoconical areas 19a, 19b are located adjacent to one another and each taper inwards. It would be understood that the main tube 19 may be of a different internal configuration.
[0085] The hose barb 18 is connected to the coupling 27 on the cylindrical wall section 27b of the coupling 27.
[0086] The Venturi mechanism 14 is in fluid communication with the second opening 13 via the third opening 25 and is configured to facilitate the suction of machining dust through the second opening and through the Venturi mechanism.
[0087] The free end of the main tube 19, and hence the Venturi mechanism 14, is configured to be connected to a waste collection system, for example to a filter bag or large volume extraction system.
[0088] The device 10 is driven by a standard compressor airline which is available on the majority of machining machines. The compressor airline is connected to the device 10 via the hose barb 18.
[0089] In use, compressed air is supplied via the compressor airline to the Venturi mechanism 14 via the hose barb 18. The air flow within the main tube 19 will be at such a high rate and speed that suction is generated, due to
-14Bernoulli’s principal, at the neck section 27a of the coupling 27 of the Venturi mechanism 14.
[0090] The suction generated pulls in fluid from the body 12 into the Venturi mechanism 14 and creates a partial vacuum at the second opening 13.
[0091] Due to the partial vacuum created, ambient air and together with machining dust from the vicinity of the material extraction point is sucked into the body 12 through the second opening 13 and into the Venturi mechanism 14 via the third opening 25.
[0092] The machining dust is thus transferred through the main tube 19 to the waste collection system.
[0093] The ingestion of ambient air into the body 14 has the additional benefit of acting as coolant and regulating the temperature of the cutting tool.
[0094] In addition, when the cutting tool spins at a high velocity during the material extraction process, a vortex will be created in the body 14 due to the shape of the body 14 which helps regulate the temperature of the cutting tool.
[0095] Referring to figure 5, a second embodiment of a device 10a in accordance with the invention is shown.
[0096] The device 10a of the second embodiment is very similar to the first embodiment and the same reference numerals have been used to identify identical features.
[0097] The device 10a of the second embodiment mainly differs from that of the first embodiment in relation to the direction the hose barb 18a
-15extends from the coupling 27a. In one embodiment the hose barb extends outwardly from the left-hand side of the coupling and in the other embodiment, the hose barb extends outwardly from the right-hand side of the coupling.
[0098] The device 10a is shown connected to a waste collection system in the form of a filter bag 12.
[0099] A hose clamp 22 is provided on the connector portion 15 for facilitating the coupling of connector portion 15 to the section of the machining machine. In the embodiment shown, the hose clamp 22 is in the form of a worm drive hose clip, although it would be understood that the hose clamp may be in any suitable form.
[0100] A nut and bolt arrangement 100 is used to releasably couple the nozzle portion to central portion in the manner described earlier.
[0101] Figure 6 shows the device 10a of the invention attached to a machining machine in the form of a milling machine 33. A compressor airline 35 is shown connected to the hose barb 18a and a cutting tool 34 is shown protruding through the second opening 13.
[0102] For milling, trimming and drilling processes, re-cutting of machining dust and excessive heat will prematurely wear the cutting tool. The large volume of air flow generated by the device in use, apart from the cooling effect, reduces and/or eliminates the need for manual process intervention to clean the cutting tool or replace the cutting tool due to premature wear.
[0103] Figure 7 shows the device 10 of the invention attached to the arm 37 of a machining robot 36. A cutting tool 34 is shown protruding through the second opening 13. With the device 10, the need for the robotic machining of composite materials to be contained within a box/room to prevent contamination
-16of the processes around it, and to prevent health and safety risks to an operator, will be negated. This provides a huge benefit in costs and space savings.
[0104] The device can be manually loaded to the spindle or supplied as part of an automated tool change assembly.
[0105] For automated tool change applications, the device in accordance with the invention is permanently attached to the tool holder about a flange of the tool holder. For such applications, the device is constructed from a metallic material for stiffness and strength.
[0106] The combined device and tool holder may be integrally formed or be constructed initially as separate components before being fixedly joined together.
[0107] Where the automatic tool changer (ATC) is unable to accommodate the size of the combined device and tool holder, a spindle attachment assembly may be utilized with the combined device and tool holder incorporated into the spindle attachment assembly, to facilitate automated tool changing.
[0108] The combined device and tool holder/spindle attachment assembly is configured to be compatible with standard ATC systems. Standard ATC systems use a stopper block on the spindle. The changeable tools generally include an anti-rotation spigot which is inserted into a cavity in the stopper block so as to allow an internal tool holder to be driven by the spindle of the machine while the outer casing of the tool remains stationary.
[0109] The standard ATC system for use with the combined device and tool holder/spindle attachment assembly of the invention is one which includes an air valve incorporated into the stop block as known in the art.
-17[0110] The air valve may be connected to a compressor airline for the supply of compressed air or any suitable air flow system as known in the art.
[0111] The device forming part of the combined device and tool holder/spindle attachment assembly differs from the previously described embodiments in that the hose barb rather than extending to the left or to the right from the coupling, extends upwards from the coupling and also acts as the antirotation spigot.
[0112] The present invention provides a simplified means for the removal of material waste which does not alter the characteristics of a work piece and/or require a lot of floor space to install.
[0113] The present invention also provides a means for adapting existing machining equipment for composite material applications.
[0114] The present invention provides a quick and easy solution to retrofit a standard machining machine (i.e. a milling machine, drilling machine, trimming machine etc.) or a standard robotic platform to enable the safe extraction of composite machining dust at the cutting tool tip i.e. the material extraction point.
[0115] The device in accordance with the invention is flexible and reconfigurable, facilitating its retrofitting onto any spindle platform for the safe extraction of machining dust. The slender nature of the design of the device allows for restricted access machining while maintaining dust extraction in proximity of the cutting tool tip.
[0116] The present invention also comprises no moving parts. As such, large fragments can be extracted without damage to the device in contrast to fans or impellers extractors where large fragments can damage the extractors. In addition, it is easier and cheaper to manufacture than dust extractor
-18attachments which incorporate fans or impellers to assist in the removal of machining dust from the vicinity of the material extraction point.
[0117] While the connector portion and the nozzle portion have been described as being releasably connected to the central portion, the invention is not limited thereto. The connector portion and/or the nozzle portion may instead be permanently joined to the central portion.
[0118] While the connector portion, central portion, and nozzle portion have been described as being manufactured from a metallic material, other suitable material may be used for the construction of the connector portion, central portion, and/or nozzle portion.
[0119] In addition, the connector portion, central portion, and/or nozzle portion may be constructed from a semi-rigid material rather than a rigid material.
[0120] While the device has been described with an adapter for connecting the central portion to the nozzle portion, the central portion may incorporate an integrated means for connecting it to the nozzle portion thus doing away with the requirement for an adapter.
[0121] While the device has been described as a retro fit to a machine, it can be provided with existing machine. For example, the connector portion could be permanently coupled to the machine or to the tool holder of the machine, and the other components of the device released from the connector portion to effect a cutting tool change before the device is reassembled prior to the commencement of a machining process.

Claims (12)

  1. Claims
    1. A device for the extraction of machining dust comprising:
    a body configured to be coupled to a section of a machining machine, said body having a first opening at a first end thereof and a second opening at a second end thereof, the first end being opposite the second end, said first opening configured to receive a tool holder therethrough and said second opening configured to receive a cutting tool therethrough; and a Venturi mechanism connected to the body and in fluid communication with said second opening;
    wherein said Venturi mechanism is configured to facilitate the suction of machining dust through the second opening and through the Venturi mechanism.
  2. 2. A device according to claim 1, wherein the Venturi mechanism is a Venturi pump.
  3. 3. A device according to claim 1 or claim 2, wherein the Venturi mechanism defines an aspirator pump type mechanism.
  4. 4. A device according to anyone of the preceding claims, wherein the body comprises a central portion and the Venturi mechanism is connected to the body at the central portion.
  5. 5. A device according to claim 4, wherein the central portion is substantially shaped like a conical frustum.
  6. 6. A device according to claim 4, wherein the central portion is substantially cylindrical in shape.
    -207. A device according to anyone of the preceding claims, wherein the body comprises a connector portion configured to couple the device to a section of a machining machine, and the first opening forms part of the connector portion.
    8. A device according to claim 7, further comprising a hose clamp for facilitating the coupling of connector portion of the device to the section of the machining machine.
    9. A device according to claim 7 or claim 8, wherein the connector portion substantially comprises a metallic material.
    10. A device according to claim 7 or claim 8, wherein the connector portion substantially comprises a 3D printable material.
    11. A device according to any one of claims 7 to 10, wherein the connector portion is releasably connected to the central portion.
    12. A device according to claim 11, wherein connector portion is releasably connected to central portion by means of a snap-fit mechanism.
    13. A device according to any one of claims 7 to 10, wherein the connector portion is integrally formed with the central portion.
    14. A device according to any one of claims 7 to 13, wherein connector portion is substantially cylindrical in shape.
    15. A device according to anyone of the preceding claims, wherein the body comprises a nozzle portion, and the second opening forms part of the nozzle portion.
    16. A device according to claim 15, wherein the nozzle portion substantially comprises a metallic material.
    17. A device according to claim 15, wherein the nozzle portion substantially comprises a 3D printable material.
    -2118. A device according to any one of claims 15 to 17, wherein the nozzle portion is releasably connected to central portion.
    5 19. A device according to claim 18, wherein nozzle portion is releasably connected to central portion by means of releasable fasteners.
    20. A device according to any one of claims 15 to 17, wherein nozzle portion is integrally formed with the central portion.
    21. A device according to any one of claims 15 to 20, wherein nozzle portion is substantially dome shaped.
    22. A device according to claim 21, wherein the nozzle portion is 15 substantially compound dome shaped.
    Amendments to the claims have been filed as follows:
    20 03 18
    Claims
    1. A device for the extraction of machining dust comprising:
    5 a body configured to be coupled to a section of a machining machine, said body having a first opening at a first end thereof and a second opening at a second end thereof, the first end being opposite the second end, said first opening configured to receive a tool holder therethrough when said body is coupled to a section of a machining machine and said second opening configured
    10 to receive a cutting tool therethrough when said body is coupled to said section of a machining machine; and a Venturi mechanism connected to the body and in fluid communication with said second opening;
    wherein said Venturi mechanism is configured to facilitate the suction of machining dust through the second opening between said body and a cutting tool, and through the Venturi mechanism.
    2 0 2. A device according to claim 1, wherein the Venturi mechanism is a
    Venturi pump.
    3. A device according to claim 1, wherein the Venturi mechanism defines an aspirator pump type mechanism.
    4. A device according to anyone of the preceding claims, wherein the body comprises a central portion and the Venturi mechanism is connected to the body at the central portion.
    3 0 5. A device according to claim 4, wherein the central portion is substantially shaped like a conical frustum.
    20 03 18
    6. A device according to claim 4, wherein the central portion is substantially cylindrical in shape.
  7. 7. A device according to anyone of the preceding claims, wherein the 5 body comprises a connector portion configured to couple the device to a section of a machining machine, and the first opening forms part of the connector portion.
  8. 8. A device according to claim 7, further comprising a hose clamp for facilitating the coupling of connector portion of the device to the section of the
    10 machining machine.
  9. 9. A device according to claim 7 or claim 8, wherein the connector portion substantially comprises a metallic material.
    15 10. A device according to claim 7 or claim 8, wherein the connector portion substantially comprises a 3D printable material.
    11. A device according to any one of claims 7 to 10 when dependent directly or indirectly on claim 4, wherein the connector portion is releasably
    2 0 connected to the central portion.
    12. A device according to claim 11, wherein the connector portion is releasably connected to central portion by means of a snap-fit mechanism.
    2 5 13. A device according to any one of claims 7 to 10 when dependent directly or indirectly on claim 4, wherein the connector portion is integrally formed with the central portion.
    14. A device according to any one of claims 7 to 13, wherein the
    3 0 connector portion is substantially cylindrical in shape.
    15. A device according to anyone of the preceding claims, wherein the body comprises a nozzle portion, and the second opening forms part of the nozzle portion.
    20 03 18
    16. A device according to claim 15, wherein the nozzle portion substantially comprises a metallic material.
    17. A device according to claim 15, wherein the nozzle portion
    5 substantially comprises a 3D printable material.
    18. A device according to any one of claims 15 to 17, wherein the nozzle portion is releasably connected to central portion.
  10. 10 19. A device according to claim 18, wherein the nozzle portion is releasably connected to central portion by means of releasable fasteners.
    20. A device according to any one of claims 15 to 17 when dependent directly or indirectly on claim 4, wherein the nozzle portion is integrally formed with
  11. 15 the central portion.
    21. A device according to any one of claims 15 to 20, wherein the nozzle portion is substantially dome shaped.
  12. 2 0 22. A device according to claim 21, wherein the nozzle portion is substantially compound dome shaped.
    Go?
    Intellectual
    Property
    Office
    Application No: Claims searched:
    GB1701823.5
    1-22
GB1701823.5A 2017-02-03 2017-02-03 Device for the extraction of machining dust Active GB2559386B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB1701823.5A GB2559386B (en) 2017-02-03 2017-02-03 Device for the extraction of machining dust
PCT/EP2018/052832 WO2018141972A1 (en) 2017-02-03 2018-02-05 Device for the extraction of machining dust
US16/482,339 US11383340B2 (en) 2017-02-03 2018-02-05 Device for the extraction of machining dust
JP2019541222A JP2020506072A (en) 2017-02-03 2018-02-05 Equipment for removing chips
EP18703580.3A EP3576906B1 (en) 2017-02-03 2018-02-05 Device for the extraction of machining dust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1701823.5A GB2559386B (en) 2017-02-03 2017-02-03 Device for the extraction of machining dust

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GB2559386A true GB2559386A (en) 2018-08-08
GB2559386B GB2559386B (en) 2019-09-04

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US (1) US11383340B2 (en)
EP (1) EP3576906B1 (en)
JP (1) JP2020506072A (en)
GB (1) GB2559386B (en)
WO (1) WO2018141972A1 (en)

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Publication number Publication date
GB2559386B (en) 2019-09-04
EP3576906A1 (en) 2019-12-11
EP3576906B1 (en) 2020-10-14
GB201701823D0 (en) 2017-03-22
US11383340B2 (en) 2022-07-12
WO2018141972A1 (en) 2018-08-09
US20200047226A1 (en) 2020-02-13
JP2020506072A (en) 2020-02-27

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