EP2590783B1 - Düse für kühlschmiermittel - Google Patents

Düse für kühlschmiermittel Download PDF

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Publication number
EP2590783B1
EP2590783B1 EP11733646.1A EP11733646A EP2590783B1 EP 2590783 B1 EP2590783 B1 EP 2590783B1 EP 11733646 A EP11733646 A EP 11733646A EP 2590783 B1 EP2590783 B1 EP 2590783B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
chamber
cooling lubricant
main chamber
plate
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.)
Active
Application number
EP11733646.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2590783A1 (de
Inventor
Marc Kritzky
Dieter Muchow
Alexander Foethke
Dietmar PÄHLER
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.)
Saint Gobain Diamantwerkzeuge GmbH and Co KG
Original Assignee
Saint Gobain Diamantwerkzeuge GmbH and Co KG
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.)
Filing date
Publication date
Application filed by Saint Gobain Diamantwerkzeuge GmbH and Co KG filed Critical Saint Gobain Diamantwerkzeuge GmbH and Co KG
Priority to PL11733646T priority Critical patent/PL2590783T3/pl
Publication of EP2590783A1 publication Critical patent/EP2590783A1/de
Application granted granted Critical
Publication of EP2590783B1 publication Critical patent/EP2590783B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • 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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • 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
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • the present invention relates to a nozzle for cooling lubricants and an economical and environmentally friendly grinding method.
  • the present invention relates to the supply of cooling lubricant to a contact point between a workpiece and a tool for material removal, in particular for supplying cooling lubricant during grinding operations.
  • the coupling of the cooling lubricant has a significant influence on the grinding result and the service life of the wheel.
  • the interaction of pressure, flow rate, temperature and direction of the cooling lubricant jet determine the cooling effect.
  • the efficiency of the cooling lubrication is also significantly influenced by the nozzle shape.
  • the most important task of the cooling lubricant is the cooling of the workpiece.
  • the cooling lubricant must also cool the grinding wheel, minimize friction, remove the grinding chips from the grinding zone and the entire machine and flush the pores of the grinding wheel.
  • Dispersion Another influencing factor which influences the quality of the workpiece cooling is the dispersion of the coolant jet supplied to the workpiece. Dispersion is disadvantageous because it tends to increase entrained air. The air tends to eliminate some coolant from the grinding area, and therefore from the grinding wheel and workpiece interface.
  • a nozzle assembly that includes a manifold chamber and a modular end plate that is removably attached to a downstream side of the manifold chamber.
  • the apparatus also includes at least one coherent jet nozzle for conveying coolant through the modular faceplate and a pretreatment apparatus disposed within the manifold chamber.
  • a method and apparatus for coating a substrate is known.
  • a nozzle is described which includes a hole provided with wall in the interior opposite to the current direction in the entire width.
  • the wall promotes the distribution of the incoming air or liquid in the interior of the nozzle.
  • a screen opposite to the direction of flow is described to further promote the distribution of the liquid.
  • a metalworking apparatus for removing metal from a workpiece with a laser-controlled coolant nozzle is known.
  • the coolant nozzle serves to attach the coolant to a grinding wheel which removes metal from the workpiece.
  • the coolant nozzle has a baffle or deflection surface. The deflection surface is used to close a sensor bore.
  • a unit for observing the direction and speed of rotational movement of a body includes a flow channel, an inlet chamber connected longitudinally to one end with that of the flow channel, and means for damping inhomogeneity and disturbing the pressure of the flow of the fluid entering the inlet region of the fluid flow channel.
  • a common drawback of known nozzles and nozzle assemblies is that the coolant swirls within the chamber and the laminar effluent is destroyed. In the grinding area no pure coolant lubricant is introduced, but an emulsion of air and coolant lubricant. As a result, the cooling effect suffers considerably. Burn marks form on the machined workpieces. It is achieved by a lower throughput of workpieces.
  • the object of the present invention is to provide a nozzle for grinding applications, which increases the grinding performance and avoids burn marks on the workpiece.
  • the inventive nozzle for cooling lubricant preferably contains three parts, the connection chamber with the baffle plate, the main chamber with the diffusion plate and a nozzle plate.
  • the baffle plate is a solid plate that has no holes for passing the cooling lubricant.
  • the cooling lubricant can be introduced at a pressure of up to 5 bar. With the nozzle according to the invention after a distance of about 1 m nor a laminar flow of coolant. In the grinding area a pure coolant lubricant is introduced and not as in known methods with known nozzles an emulsion of air and coolant.
  • the dressing intervals are increased by less abrasive grain wear.
  • the grinding burn is reduced and higher removal rates are achieved.
  • the volumetric flow provided is used effectively, reducing the total volume flow.
  • the amount of air entrained and thereby foaming, misting and evaporation is minimized.
  • a grinding wheel can be ground with higher cutting speeds and with hard bonds.
  • the device according to the invention can be assembled easily and manages with less coolant than known nozzles, because a targeted jet is produced. It creates a laminar flow with extremely little air.
  • the cooling lubricant enters the connection chamber.
  • the connection chamber has a groove for an O-ring and holes for the screws.
  • the plate in the connection chamber is the baffle plate.
  • the cooling lubricant enters the connection chamber from the back with a high volume flow of approx. 300 l / m.
  • the cooling lubricant flows according to the invention with a homogeneous flow through the entire diffusion plate. With the baffle plate, the coolant does not get into the main chamber immediately and the diffusion plate is not only applied in the center. Without the baffle plate, the cooling lubricant would immediately reach the main chamber from the connection chamber and only come into the middle of the diffusion plate. In the middle, a much higher volume flow would occur than at the edges. This would cause the laminar flow to collapse.
  • a homogeneous pressure is generated according to the invention.
  • the cooling lubricant settles so that it is pressed out so far only over the output nozzle plate that a laminar flow is obtained.
  • the homogeneous pressure causes a uniform jet to build up over the profile. The jet is laminar and does not divide. It is thereby cooled according to the invention cooler because it is better targeted cooling, especially because it is cooled more targeted by the profile.
  • the Q / W value can be increased according to the invention.
  • the Q / M value means the removal of the grinding wheel to one millimeter of grinding wheel width per unit of time. The pumping power and energy are reduced.
  • the nozzle according to the invention causes a laminar flow, so that no air pockets in the coolant, which act as insulators. It can be sanded cooler and the grinding performance can be increased. The workpiece has fewer burn marks.
  • a preferred embodiment of the nozzle according to the invention is that the diffusion plate is mounted with holes in the bottom of the main chamber.
  • a further preferred embodiment of the nozzle according to the invention is that the bores extend over the entire inner surface of the bottom of the main chamber. This advantageously contributes to the calming of the cooling lubricant in the main chamber.
  • a preferred embodiment of the nozzle according to the invention is that the baffle plate is positioned in the connection chamber above the chamber inlet, that the cooling lubricant distributed in the connection chamber before it hits the diffusion plate of the main chamber.
  • a further preferred embodiment of the nozzle according to the invention is that the size of the surface of the baffle plate is at least 50% of the inner surface of the bottom in the connection chamber.
  • the baffle plate is parallel to the bottom of the connection chamber. The distance between the baffle plate and the inner surface of the bottom of the connection chamber preferably corresponds to at least 50% of the distance between the inner surface of the bottom of the connection chamber and the upper edge of the side walls of the connection chamber.
  • the connection chamber is preferably from 180 mm to 200 mm wide, preferably from 70 mm to 90 mm deep and preferably from 45 mm to 60 mm high.
  • the baffle plate is preferably from 10 mm to 20 mm above the inner bottom of the connection chamber.
  • the baffle plate is preferably from 2 mm to 5 mm thick, preferably from 20 mm to 40 mm wide, and preferably from 130 mm to 150 mm long.
  • the baffle is positioned above the chamber inlet so that the coolant circulates in the connection chamber before it hits the diffusion plate in the main chamber. As a result, the laminar flow of the cooling lubricant is advantageously effected according to the invention.
  • a preferred embodiment of the nozzle according to the invention is that the front side of the connection chamber and the front side of the main chamber have grooves for O-rings.
  • a further preferred embodiment of the nozzle according to the invention is that the connection chamber, the main chamber and the nozzle plate have screw openings for connecting.
  • a further preferred embodiment of the nozzle according to the invention is that the connection chamber, the main chamber and the nozzle plate are connected with screws in screw openings and O-rings in grooves to a device.
  • the three parts of the nozzle structure can advantageously be sealed watertight. As a result, any loss of cooling lubricant is avoided and enables environmentally friendly handling of the nozzle according to the invention.
  • a preferred embodiment of the nozzle according to the invention is that the holes in the diffusion plate have a diameter of 2 mm to 4 mm.
  • a further preferred embodiment of the nozzle according to the invention is that the holes in the nozzle plate have a diameter of 1 mm to 3 mm.
  • connection chamber with baffle plate, main chamber and nozzle plate contain aluminum or alloyed stainless steel.
  • Aluminum is particularly suitable for the production of the nozzle parts.
  • An advantageous embodiment of the invention is that the coolant flow rate corresponds approximately to the grinding wheel peripheral speed. With these speeds, very good results are achieved.
  • a further advantageous embodiment of the invention is that of the nozzle a laminar flow is generated. Due to the laminar flow of the cooling lubricant very good results are achieved on the workpieces and a good throughput.
  • a further solution of the problem lies in the use of the nozzle according to the invention for supplying cooling lubricant to a contact point between a workpiece and a tool for material removal, in particular for supplying cooling lubricant during grinding operations.
  • Fig. 1 shows a spatial representation from above
  • Fig. 2 a plan view of the connection chamber 1 with baffle 2 and Fig. 2A a cross-sectional view through the line BB in Fig. 2
  • the representation from above means looking towards the outlet of the cooling lubricant.
  • the representation from below means looking in the outlet direction.
  • the connection chamber 1 has a chamber inlet 3 from the rear side 15.
  • the connection chamber 1 has from the front side 14 in the interior of a baffle plate 2, which is held on at least two fasteners 5.
  • the connection chamber 1 has on the front side 14 grooves 4 for O-rings.
  • the connection chamber 1 has screw openings 6 for screws.
  • the connection chamber 1 is for example about 196 mm wide, about 84 mm deep and about 55 mm high.
  • the baffle 2 is located about 15 mm above the bottom of the connection chamber 1.
  • the baffle 2 is for example about 3 mm thick, about 30 mm wide and about 140 mm long.
  • the fasteners 5 have a diameter of about 24 mm.
  • the baffle plate 2 is positioned above the chamber inlet 3 so that the cooling lubricant is distributed in the connection chamber 1 before it impinges on the diffusion plate 8 in FIG the main chamber 7 meets, see Fig. 3 ,
  • the size of the baffle plate 2 is for example at least 50% of the inner surface of the bottom in the connection chamber. 1
  • Fig. 3 shows a spatial representation from above
  • Fig. 4 a spatial representation from below
  • Fig. 5 a plan view of the main chamber 7 with diffusion plate 8
  • Fig. 5A a cross-sectional view through the line BB in Fig. 5
  • the main chamber 7 is removably attached to the rear side 17 to the front side 14 of the connection chamber 1.
  • the bottom of the main chamber 7 has a diffusion plate 8 with holes 9.
  • the diffusion plate 8 is shown from both the front 16 and the back 17 of the main chamber 7.
  • the holes 9 are distributed over the entire inner surface of the bottom of the main chamber 7.
  • the main chamber 7 has screw holes 6 for screws.
  • the main chamber 7 is for example about 196 mm wide, about 84 mm deep and about 55 mm high.
  • the front side 16 of the main chamber 7 has grooves 4 for O-rings.
  • the holes 9 in the diffusion plate 8 have, for example, a diameter of about 2.5 mm.
  • the holes 9 have, for example, a distance in the width of about 4.8 mm and in the length of about 9.6 mm.
  • Fig. 6 shows a spatial representation from above
  • Fig. 7 a plan view of the nozzle plate 10 with a matched to a grinding wheel profile bore pattern 13 and
  • Fig. 7A a cross-sectional view through the line AA in Fig. 7A
  • the nozzle plate 10 is removably attached to the rear side 19 of the front side 16 of the main chamber 7.
  • the drilling pattern 11 is adapted to a grinding wheel profile.
  • the drilling pattern 11 is shown both from the front 18 and from the back 19 of the nozzle plate 10.
  • the nozzle plate 10 has screw holes 6 for screws.
  • the dimensions of the nozzle plate 10 are adapted to those of the main chamber 7.
  • the holes 9 have, for example, a distance in the width of about 4.8 mm and in the length of about 9.6 mm.
  • the holes 13 in the nozzle plate 10 have a diameter of about 2 mm.
  • the drilling pattern 11 is located approximately in the middle of the nozzle plate.
  • the nozzle plate 10 has a minimum height. The minimum height is for example about 30 mm.
  • Fig. 8 shows a cross-sectional drawing of the connection chamber 1
  • Fig. 9 shows a spatial exploded view from below and Fig. 10 a spatial exploded view from above the connection chamber, main chamber and nozzle plate.
  • the connection chamber 1, the main chamber 7 and the nozzle plate 10 are connected with screws in screw openings 6 and by means of O-rings in grooves 4 waterproof to a device according to the invention detachably connected to each other.
  • the connection chamber 1, the baffle 2, the main chamber 7 and the nozzle plate 10 are made of aluminum in this example.
  • a nozzle plate 10 was used with a bore pattern 11 adapted to the grinding wheel profile of a grinding wheel of 400 mm diameter.
  • a desired coolant flow rate of 25 m / sec was set.
  • a grinding wheel speed of 1200 min -1 is set.
  • a coolant pressure of 5 bar is set.
  • a coherent jet of cooling lubricant was applied to the grinding wheel with the nozzle according to the invention.
  • a laminar flow was generated by the nozzle.
  • the comparative example was carried out under the same conditions as the example. The only difference was that a flat jet nozzle was used in the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP11733646.1A 2010-07-09 2011-07-08 Düse für kühlschmiermittel Active EP2590783B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11733646T PL2590783T3 (pl) 2010-07-09 2011-07-08 Dysza dla cieczy chłodząco-smarującej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010036316.2A DE102010036316B4 (de) 2010-07-09 2010-07-09 Düse für Kühlschmiermittel
PCT/EP2011/061592 WO2012004376A1 (de) 2010-07-09 2011-07-08 Düse für kühlschmiermittel

Publications (2)

Publication Number Publication Date
EP2590783A1 EP2590783A1 (de) 2013-05-15
EP2590783B1 true EP2590783B1 (de) 2014-08-20

Family

ID=44628600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11733646.1A Active EP2590783B1 (de) 2010-07-09 2011-07-08 Düse für kühlschmiermittel

Country Status (7)

Country Link
US (1) US8529312B2 (zh)
EP (1) EP2590783B1 (zh)
CN (1) CN103025487B (zh)
DE (1) DE102010036316B4 (zh)
ES (1) ES2501766T3 (zh)
PL (1) PL2590783T3 (zh)
WO (1) WO2012004376A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG174351A1 (en) 2009-03-24 2011-10-28 Saint Gobain Abrasives Inc Abrasive tool for use as a chemical mechanical planarization pad conditioner
WO2010141464A2 (en) 2009-06-02 2010-12-09 Saint-Gobain Abrasives, Inc. Corrosion-resistant cmp conditioning tools and methods for making and using same
WO2011028700A2 (en) 2009-09-01 2011-03-10 Saint-Gobain Abrasives, Inc. Chemical mechanical polishing conditioner
US10327268B2 (en) 2015-09-25 2019-06-18 Intel Corporation Microelectronic package with wireless interconnect
US10610992B2 (en) 2017-08-28 2020-04-07 United Technologies Corporation Automated interchangeable coolant distributor
JP6433034B1 (ja) * 2017-12-12 2018-12-05 株式会社塩 ノズル、ノズルモジュール及びこれを備える工作機械
CN109772916B (zh) * 2019-03-20 2024-03-15 江铃集团山东华岳车辆部件有限公司 自动喷涂石墨乳的模具冷却润滑装置
CN113664664A (zh) * 2021-08-20 2021-11-19 中国航发航空科技股份有限公司 一种航空发动机高温合金磨削加工用冷却喷嘴

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Publication number Priority date Publication date Assignee Title
BE758803A (fr) * 1969-11-12 1971-04-16 Jones & Laughlin Steel Corp Procede pour controler le revetement d'un substrat
US3717888A (en) * 1970-11-02 1973-02-27 D Phelan Sleeping bag
US4041895A (en) * 1975-09-29 1977-08-16 Republic Steel Corporation Coating thickness and distribution control
US4254659A (en) * 1979-01-12 1981-03-10 Kbg Corporation Fluid dynamic angular rate sensor
JPH07241770A (ja) * 1994-03-08 1995-09-19 Nissan Motor Co Ltd 研削液供給装置
JP2000033572A (ja) * 1998-07-22 2000-02-02 Seibu Jido Kiki Kk リング状砥石の取付台座
JP2001162533A (ja) * 1999-12-06 2001-06-19 Seiko Seiki Co Ltd 加工方法および加工装置
US6669118B2 (en) 2001-08-20 2003-12-30 Saint-Gobain Abrasives, Inc. Coherent jet nozzles for grinding applications
US6602047B1 (en) * 2002-02-28 2003-08-05 General Electric Company Methods and apparatus for cooling gas turbine nozzles
US7727054B2 (en) * 2002-07-26 2010-06-01 Saint-Gobain Abrasives, Inc. Coherent jet nozzles for grinding applications
US7021994B2 (en) * 2003-11-05 2006-04-04 General Electric Company Method and apparatus for metalworking using a coolant fluid
CN100369685C (zh) * 2006-01-13 2008-02-20 东北大学 一种用于热轧带钢生产线的冷却装置

Also Published As

Publication number Publication date
DE102010036316A1 (de) 2012-01-12
PL2590783T3 (pl) 2015-01-30
US8529312B2 (en) 2013-09-10
CN103025487B (zh) 2015-04-08
DE102010036316B4 (de) 2015-06-11
CN103025487A (zh) 2013-04-03
EP2590783A1 (de) 2013-05-15
US20130203323A1 (en) 2013-08-08
WO2012004376A1 (de) 2012-01-12
ES2501766T3 (es) 2014-10-02

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