EP3283257A1 - Method and system for grinding the exterior of shaft parts between tips - Google Patents
Method and system for grinding the exterior of shaft parts between tipsInfo
- Publication number
- EP3283257A1 EP3283257A1 EP16715325.3A EP16715325A EP3283257A1 EP 3283257 A1 EP3283257 A1 EP 3283257A1 EP 16715325 A EP16715325 A EP 16715325A EP 3283257 A1 EP3283257 A1 EP 3283257A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- support
- shaft part
- grinding wheel
- rotationally symmetrical
- 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
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- 238000000034 method Methods 0.000 title claims abstract description 69
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- 238000000576 coating method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
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Classifications
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/01—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor for combined grinding of surfaces of revolution and of adjacent plane surfaces on work
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
Definitions
- the invention relates to a method for external grinding of a shaft part with rotationally symmetrical sections and end faces having centering bores and to a system comprising a grinding machine and such a shaft part.
- a second fundamental grinding process is the so-called centerless grinding.
- Centerless grinding does not hold the workpiece between points; Rather, it is set in rotation by means of a grinding wheel and this opposite a regulating wheel for grinding or during grinding, wherein in the grinding gap between the
- a press release dated 22 February 2006 describes an article on a Kronos L dual grinding machine, which also allows centerless grinding as well as grinding between tips in a machine
- the workpiece is first ground between the tips, after which the workpiece is released from the clamping between the tips, and the finish grinding is carried out by means of conventional centeless grinding.Also, the reference to the centering in the transition from grinding between the tips in a centerless Loops set up ben, whereby accuracy losses are connected, since the above-mentioned reference change takes place during the grinding.
- the known Kronos L dual grinding machine uses both grinding methods, i. the grinding between the tips and the Centeriess grinding, on a machine.
- the pre-grinding between the tips in which a clean cylindrical outer surface is generated at the rotationally symmetric sections.
- the tips are loosened, followed by centering grinding.
- centering grinding this creates a new reference of the so-called center, namely via the clean cylindrical surfaces of the rotationally symmetric sections produced during roughing.
- the grinding process is interrupted when the peak stress on the workpiece is released. This is followed by the newly started centering grinding. This means that in addition to the reference change of the reference longitudinal axis of the workpiece, the grinding time is extended.
- the object of the present invention is to provide a method for external grinding of a rotationally symmetrical sections having shaft portion and a system of the method of realizing grinding machine and such a shaft part, by means of which the advantages of grinding between the tips, wherein in particular the maintenance of a exact reference axis plays a role in the grinding, can be used to realize a high quality of the grinding result on the ground workpiece, without the need for additional lunettes must be used even with respect to their longitudinal axis having a certain flexibility workpieces.
- the method according to the invention external grinding of a shaft part, which has rotationally symmetrical sections and end faces in which centering bores are introduced, is realized.
- the centering holes define a reference longitudinal axis and axis of rotation of the shaft part, which must still be present for high accuracy of the shaft part after grinding or is of crucial importance for subsequent machining processes. This means that the reference axis of the shaft part defined by the centering holes is maintained during the grinding process.
- a measuring device detects diameter values of the rotationally symmetrical sections of the shaft part. These measured values are transmitted to a control device, which tracks the support device under continuous continuous support of the rotationally symmetrical sections to the measured actual diameter values up to the finished dimension of the shaft part.
- Abrasive machining is preferably substantially the entire grinding. However, this also includes a certain grinding of the workpiece in its not yet done clamping between the tips. In any case, however, an essential part of the grinding is carried out up to the end of the finish grinding between the tips and with staff employed and following the grinding progress.
- this grinding between the tips is achieved by the Abstützungen and simultaneous grinding that high quality workpieces are made in terms of dimensional, shape and position tolerances.
- the support means in the form of the first and the second support device is designed as a support disk or a support ruler.
- the main task of the support disk is that when grinding between the tips as far as possible on all parts of the shaft part is a support at which rotationssym metric sections are available.
- the shaft portion is located between the grinding wheel and the support disk, the resulting grinding gap being closed downwardly by a support ruler on which the shaft portion is supported between the tips during grinding. This experiences this Wellenteil a support at least at middle portions of its length, but remains always spanned during the entire grinding between the tips.
- the shaft part is rotationally driven. This is preferably done by engaging in the center holes tips or special drivers or a chuck that are adapted to the geometry of the workpiece.
- the support disk is now designed so that when this is employed on the shaft part, no slip occurs between the support disk and the shaft part, d. h., That support disk and Welieseil run substantially without slippage to each other.
- the grinding wheel, the shaft part and the support disk are controlled with respect to their respective speed.
- the speed control can be used to ensure that no slippage occurs between the support disk and the shaft part, but on the other hand, the grinding wheel generates optimum conditions for loop engagement on the shaft part.
- the shaft part is driven or braked during the finishing grinding both by the grinding wheel and by the support disk.
- the support disk is provided with a covering which is designed in the manner of a grinding wheel, wherein the support disk is arranged opposite the grinding wheel and there exerts its supporting function, namely supporting the shaft part, but not grinding.
- a further embodiment is that the support disk made of metal, for example made of steel or hard metal.
- the support disk can be made extremely wear-resistant.
- the support device as the invention prescribes, can be tracked to the currently measured diameter values up to the finished dimension of the shaft set, the diameter values are preferably measured by way of an in-process measurement. As a result, the grinding process and thus the grinding result can be immediately corrected with any currently measured diameter.
- the diameter of the shaft part or workpiece In order to continuously measure the diameter of the shaft part or workpiece, the diameter is measured at at least one end of the shaft part. With this diameter measurement value, the infeed value of the grinding wheel, the support disk and the support ruler is then regulated. Usually, however, the workpiece is measured at its diameters but at both shaft ends. This makes it possible that, on the one hand, the diameter of the workpiece can be continuously measured at both shaft ends, and thus the conicity deviation on the workpiece can also be determined by the difference of the measured values.
- the grinding wheel and the support plate are in a preferred embodiment with respect to their axes in the horizontal plane in each case CNC-controlled automatically swiveled.
- this or the support ruler has at its two ends ZuStell noticeden for delivery to the workpiece, so that can be targeted by different delivery amounts, the support ruler to the central axis.
- the support device has two support rulers, which are adjusted relative to each other and are formed in the form of a prism.
- the two Aufiageiineale in this case, the first support device and the second support device.
- the grinding wheel and the shaft part are moved axially relative to each other and the WelSenteil thereby at least partially zeitparalfel the rotationally symmetric section as well is ground on a plan side next to a rotationally symmetric section.
- the inventive method according to this aspect of the invention ensures that during grinding of the shaft part up to and including the end of finish grinding, the grinding wheel ground shaft portion between the centering gripping held taut, and at the same time both a support rail and a regulating wheel or a more support rail instead of the regulating wheel in constant engagement with the shaft part a respective current ground diameter tracked.
- the shaft part or workpiece is hardened at least during the substantial part of the Schlerfvorganges with the grinding wheel between points.
- the reference longitudinal axis and the axis of rotation remain unchanged during the grinding process until the end of the finish grinding, the workpiece or shaft part remains permanently between the Tips kept tense.
- the provision of a regulating wheel and a support rail corresponds basically to an arrangement for centerless grinding.
- the regulating wheel and in particular the rotationally driven shaft part are substantially free of slip to each other running. Due to the uplift-free run, it is achieved above all else that the regulating wheel represents a reliable supporting function with respect to the sliding forces introduced by the grinding wheel into the shaft part during grinding and that thus the regulating wheel can not leave any surface markings, as is usually the case with supporting steady rests is. Because the regulating wheel attacks exactly at the places where grinding takes place.
- the grinding wheel, the shaft part and the regulating wheel are speed-controlled. This allows optimum speed ratios to be set relative to the grinding process.
- the shaft portion is driven by the grinding wheel and by the regulating wheel during finish grinding, wherein the grinding wheel and the regulating wheel form a grinding gap, in which the shaft part is arranged supported on the support rail.
- the support rail and provided in place of the regulating wheel further support rail are adjusted relative to each other, wherein both support rails form a prism, which is tracked to the respective current ground diameter as support means.
- the respective current ground diameter of the rotationally symmetric sections is measured by means of an in-process measurement and in particular is used via a control device for controlling the tracking on the ground rotationally symmetrical section of the shaft part.
- a control device for controlling the tracking on the ground rotationally symmetrical section of the shaft part.
- one or more diameters of the ground rotationally symmetric section can be measured. The measured values thus obtained are used to control the tracking.
- the system according to the invention which consists of a grinding machine and shaft part and is provided for external grinding of the shaft part with rotationally symmetric sections and end faces as well as centering bores defining a reference longitudinal axis and axis of rotation of the shaft part, arranged on a grinding spindle, via a CNC axis rotationally driven grinding wheel, a workpiece spindle holder with a first tip and a tailstock with a second tip on.
- the shaft part is clamped or held by the first and the second tip during grinding and rotatably driven about a reference longitudinal axis defined therewith. Throughout the grinding, the shaft part is permanently held or clamped.
- a support device with first and second support devices which can be adjusted relative to one another and a measuring device for measuring current diameters of rotationally symmetrical sections of the shaft part are provided in the system according to the invention.
- the measuring device measuring signals from the current diameter of the rotationally symmetrical sections of the shaft part are forwarded to a control device or can be forwarded therefrom, the first and the second supporting device always being based on these measured values, the current diameter of the rotationally symmetrical section at which the current diameter has just been determined by the measuring device, so nachfahrbar are that the shaft pulley is doubly supported by the supporting device opposite the grinding wheel and with the tips in engagement.
- tracking is to be understood as meaning that the respective support device is set against the respective rotationally symmetrical section and is controlled in such a way that an optimal support function is ensured at the shaft part, but the support pressure is not so high that Too much frictional resistance will adversely affect the grinding forces to be introduced or the overall grinding result.
- friction-reducing surface coverings are preferably arranged or provided on the support devices, which support the workpiece over its length or which are partially designed such that only certain areas of the support disc support the workpiece.
- the first support device is a support disk
- the second support device is a support ruler.
- the support ruler is designed as it is basically used in centerless grinding.
- the grinding wheel, the support disk and the shaft of the workpiece clamping together with the tailstock each have an independent CNC drive, on the basis of which the respective rotational speed can be controlled by CNC.
- the support disk is seated on a spindle and is preferably formed split, wherein each part of the current diameter of corresponding rotationally symmetrical sections of the shaft part can be tracked with simultaneous support of these rotationally symmetrical sections.
- both the first and the second support device is in each case a support ruler, which support rests are movable relative to each other in training a prism-like support region on rotationsy m metric portion of the shaft part.
- the measuring device is preferably designed as an in-process measuring device, by means of which actual diameters can be measured during the running grinding.
- Figure 1 a schematic side view of the grinding machine and shaft part existing
- Figure 2 is a plan view of the grinding machine with shaft part according to the invention in the direction X according to Figure 1;
- Figure 3 a view of the grinding machine according to the invention with shaft part along the
- FIG. 4 is a view as in Figure 3, but with withdrawn drivers;
- FIG. 5 shows a grinding machine according to the invention with a shaft part modified relative to FIG. 2 and a grinding wheel correspondingly adapted thereto in the same view as FIG. 2;
- FIG. 6 shows a side view as in FIG. 1 with one consisting of two support rims
- FIG. 7 shows a view according to the sectional plane B-B according to FIG. 6.
- FIG. 1 the system according to the invention of the grinding machine and the shaft part or workpiece 10 is shown in side view in a schematic side view.
- a grinding wheel 1 which can be supplied in the X1 direction is in engagement with the shaft part 10.
- the grinding wheel 1 is provided opposite a support disk 2 which can be fed along an X2 feed axis to the shaft part 10 and is engaged therewith.
- the support disk 2 represents a first support device.
- the shaft part 10 in turn is supported on a second support device in the form of a support ruler 3.
- the support ruler 3 can also be adjusted via a CNC axis to the respective current ground diameter of the shaft part 10. This means that the support ruler 3 is always traceable to the currently ground diameter.
- the grinding wheel 1 is mounted on a grinding spindle 4 (not shown), which is rotationally driven by a drive motor, also not shown.
- the grinding spindle drive is equipped with a speed control, which is controlled by a in Figure 1 for the sake of simplicity also not shown CNC control of the grinding machine of the system according to the invention.
- the feed axes X1 for the grinding wheel 1 and X2 for the support device 2 formed as the first support device are each formed as CNC axes.
- the support disk 2 is on a support spindle 5 (not shown), which in turn is driven speed controlled by a likewise not shown drive motor, the support spindle 5 is mounted on a support headstock (not shown), which along the illustrated CNC-controlled X2 axis is movable.
- FIG. 2 shows the basic arrangement of the system according to the invention comprising the grinding machine and the shaft part in a viewing direction X according to FIG. 1.
- the shaft part 10 is connected between a tip 11 of a workpiece spindle stock 13 and a tip 14 of a tailstock 15 is clamped.
- the rotational entrainment of the shaft part 10 is carried out by a driver 12.
- the tip 11 and the driver 12 of the workpiece spindle stock 13 are rotatably driven by a CNC-controlled motor and speed controlled.
- the driver 12 secures after clamping the shaft member 10 between the tips 11, 14 by a positive engagement with the shaft member 10 whose rotational entrainment.
- the grinding wheel 1 of the grinding headstock and the support disks 2, 2 'and the support bar 3 (not shown) are delivered via corresponding CNC-controlled axes.
- the support spindle 5 two support disks 2, 2 'are arranged and employed on the shaft part 10 in its central region, so that it is supported at two points between the tips 11 and 14.
- the support disks 2, 2 ' take over in the central region on the shaft part 10 so to speak partially a support function.
- the respective pivoting movements or pivot axes are indicated by B1 or B2.
- Pivot axes is a preferred, non-mandatory embodiment (not shown).
- FIG. 3 shows a view along the sectional plane AA according to FIG.
- the second support device not shown in FIG. 2, is shown in FIG. 3 in the form of the support ruler 16.
- This trained as a support rail support or support ruler 16 has separate support portions 17, 17 'and is employed by two respective CNC-controlled drives to the respective current, straight ground diameter on the shaft part 10.
- the shaft part 10 lies during its clamping between the tips 11, 14 on the support ruler 16 at the Stützberei- Chen 17, 17 'partially on.
- the grinding headstock, not shown, the work headstock also not shown, the workpiece headstock 13, the tailstock 15 and the support bar or the support rail 16 with the drives 18, 19 are all mounted on a common machine bed 20.
- an in-process diameter measuring head 21 is arranged in order to hire the support disks 2, 2 'and the support bar 16 exactly to the shaft part 10 corresponding to the respective actual diameter is at least one of the two ends of the shaft part 10.
- in-process measuring heads 21, 22 are arranged on both shaft ends. With these measuring heads 21, 22, the respective current diameter of the shaft part during grinding is continuously detectable. The diameter measured values recorded therewith are transmitted to a machine control (not shown). On the basis of these measured values, the machine control continuously controls the support disks 2, 2 'and the support ruler 16 to the shaft part 10 in accordance with the current measured values, namely during the complete grinding process until the finished dimension, ie the final dimension, is reached.
- FIG. 4 shows a view as shown in FIG. 3, but with the difference that the drivers 12 for the rotary drive of the shaft part 10 are retracted in the finish grinding shown in FIG.
- the tips 11, 14 and the two support disks 2, 2 'and the support bar 16 on the shaft member 10 permanently employed, ie they touch the shaft member 10 and support it.
- the drive is not on the workpiece headstock 13, but by the grinding wheel 1 (not shown) and the support disks 2, 2 ', wherein the shaft member 10 still remains fully clamped between the tips 11, 14 during this phase.
- the two measuring heads 21, 22 are adjacent to the shaft part, so that the current shaft part diameter in the process can be continuously measured and based on these measurements for the respective actual diameter, the support disks 2, 2 'and the support ruler 16 continuously to the exact Target position can be set. Only for loading and unloading shaft parts or workpieces 10 from the grinding machine of the system according to the invention, the tips 11, 14 are retracted, along the displacement axes 23 and 24, so that a finished ground shaft portion 10 can be removed from the grinding machine.
- the shaft part 10 is in turn clamped between the tips 11, 14 during the entire welding process, the drivers 12 on the workpiece headstock 13 ensuring that the shaft part 10 during the grinding process is rotationally driven.
- the shaft part according to FIG. 2 only a rotationally symmetrical section which is continuous over the entire length of the shaft part is provided.
- the shaft part 10 has a collar in its middle region. This collar also has flat surfaces 25, which are also ground with the grinding wheel.
- the grinding wheel is divided into two partial grinding wheels 30, 30 '.
- the spacing between the partial grinding wheels, which are both arranged on the grinding spindle 4 is slightly larger than the width of the collar of the shaft part 10 having the piano surfaces 25.
- the partial grinding wheel 30 has an abrasive coating 31, whereas the partial Schlerf disc 30 'has a Abrasive coating 32 has.
- the partial grinding wheel 30 additionally has an abrasive coating on its front side, which faces the partial grinding wheel 30.
- the front side grinding lining 33 provided there serves to grind the collar arranged on the shaft part 10 in its central region with respect to its plane surface 25.
- the partial grinding wheel 30 ' has such a front side grinding surface, which is then arranged on the front side of the partial grinding wheel 30', which faces the partial grinding wheel 30. So that the plane surface 25 can be ground on the collar of the shaft part 10, it is provided that the grinding wheel 30, 31 and the workpiece 10 or the shaft part 10 perform a relative movement to one another in the longitudinal direction of the shaft part 10.
- the workpiece headstock 13 with its tip 11 and the tailstock 15 with its tip 14 are automatically moved axially in a CNC-controlled manner. It is thereby achieved that the shaft part 10 with its plan side 25 to the Schleifbe- lay 33 of the Operaschleifprint 30 axially delivered and thereby the plan side 25 can be ground.
- the grinding of the plan side is at least partially time-parallel.
- both the rotationally symmetrical peripheral portions as well as the Plan side 25 can be ground completely time-parallel.
- the axial displacement of the workpiece headstock is effected by a CNC-controlled Z2 axis and the tailstock 15 by a likewise CNC-controlled Z-axis.
- the sides of the plan is preferably used as a covering CBN.
- FIG. 6 in a basic representation, which corresponds to that according to FIG. 1, a further exemplary embodiment is shown.
- the shaft part 10 is again ground by the grinding wheel 1.
- a support ruler 35 is provided so that the support of the shaft member 10 during grinding ens with permanent clamping between the tips by two support rulers, the support ruler 3 (second support device) and the support ruler 35 (first support device) is reliably supported. Both the support ruler 3 and the support ruler 35 can be adjusted via respective CNC-controlled feed axes 36, 37 not only to the shaft part 10, but also actively tracked to the current one.
- Both support rulers 3, 35 are designed wear-resistant on their support surface, which is realized in particular by means of a PCD (polycrystalline diamond) - coating.
- the delivery or tracking of the support rulers 3, 35 to the respective actual diameter of the shaft part 10 is dependent on each other, so that a reliable support of the workpiece 0 during the entire grinding process with permanent clamping between the tips can be realized.
- Both support rulers 3, 35 form a prism which is approximated to a V-shape by virtue of their employment or tracking relative to one another in relation to the current diameter of the shaft part 10.
- the non-illustrated driver 12 must also engage on the workpiece to achieve the finished dimension in this embodiment, so that a rotational entrainment of the shaft part 10 is ensured during the entire grinding process.
- FIG. 7 shows a representation analogous to FIGS. 3 and 4, which shows an appearance according to the sectional plane BB according to FIG.
- both support rulers 3, 35 each form a partial support for the shaft part 10.
- the principal function, in which the tips 11, 14 span the workpiece during the entire grinding process, is also realized in this embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015206565.0A DE102015206565B4 (en) | 2015-04-13 | 2015-04-13 | METHOD AND SYSTEM FOR EXTERNAL GRINDING OF SHAFT PARTS BETWEEN CENTERS |
PCT/EP2016/057856 WO2016166036A1 (en) | 2015-04-13 | 2016-04-08 | Method and system for grinding the exterior of shaft parts between tips |
Publications (2)
Publication Number | Publication Date |
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EP3283257A1 true EP3283257A1 (en) | 2018-02-21 |
EP3283257B1 EP3283257B1 (en) | 2022-09-07 |
Family
ID=55699658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16715325.3A Active EP3283257B1 (en) | 2015-04-13 | 2016-04-08 | Method and system for grinding the exterior of shaft parts between tips |
Country Status (7)
Country | Link |
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US (1) | US10766114B2 (en) |
EP (1) | EP3283257B1 (en) |
JP (1) | JP2018513025A (en) |
CN (1) | CN107530857B (en) |
DE (1) | DE102015206565B4 (en) |
ES (1) | ES2930675T3 (en) |
WO (1) | WO2016166036A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109352440B (en) * | 2018-12-10 | 2024-07-19 | 广州市新豪精密科技有限公司 | Positioning device and grinding equipment thereof |
JP2022553403A (en) * | 2019-10-24 | 2022-12-22 | ファイブズ・ランディス・コーポレーション | Methods of grinding and turning workpieces |
CN111331446A (en) * | 2020-03-20 | 2020-06-26 | 中国航发哈尔滨东安发动机有限公司 | Method for controlling grinding deformation of outer diameter of guide cylinder of automatic inclinator of helicopter |
JP7054253B2 (en) * | 2020-08-07 | 2022-04-13 | 西部自動機器株式会社 | Work position maintenance device |
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CN114454020B (en) * | 2022-02-23 | 2024-05-03 | 浙江瑞鑫达实业有限公司 | High-efficient automatic processing equipment of high performance corrosion-resistant stainless steel seamless steel pipe |
CN114654313B (en) * | 2022-04-01 | 2023-03-17 | 江苏光扬轴承股份有限公司 | Lever type measuring device for internal grinding machine |
CN115401542A (en) * | 2022-09-21 | 2022-11-29 | 中国航空工业标准件制造有限责任公司 | Centerless grinder support structure for simultaneously grinding multiple sizes and installation method thereof |
JP7432082B1 (en) | 2023-05-18 | 2024-02-16 | 知之 深瀬 | Grinding machine work support device |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293640B (en) * | 1964-11-27 | 1969-09-11 | Method and device for grinding centering cones. Anise: Aktietoolaget Malcus Holmquist, Halmstad (Sweden) | |
US3427755A (en) * | 1965-12-20 | 1969-02-18 | Brown & Sharpe Mfg | Counter-force motivated back rest |
US3903655A (en) | 1974-12-16 | 1975-09-09 | American Gage & Mach | Grinding machine with resilient control wheel |
US4205488A (en) | 1977-02-18 | 1980-06-03 | The Warner & Swasey Company | Grinding machine |
JPS5461388A (en) | 1977-10-21 | 1979-05-17 | Toyoda Mach Works Ltd | Method and device for rest shoe abrasion compensation |
CH623261A5 (en) * | 1978-07-14 | 1981-05-29 | Tschudin Werkzeugmasch | Process for the cylindrical grinding of cylindrical parts, and cylindrical grinding machine for carrying out this process |
GB2108024B (en) * | 1981-10-13 | 1985-08-21 | Litton Industrial Products | Cylindrical grinding machine with automatic workrest wear compensation |
US4663892A (en) * | 1982-11-30 | 1987-05-12 | Energy Adaptive Grinding, Inc. | Force-controlled steadyrest system |
US4507896A (en) * | 1982-11-30 | 1985-04-02 | Energy Adaptive Grinding, Inc. | Centerless grinding systems |
DE3734734A1 (en) | 1987-10-14 | 1989-04-27 | Fortuna Werke Maschf Ag | REFLECTING ROD FOR GRINDING MACHINES |
US5103596A (en) | 1990-11-05 | 1992-04-14 | Toshiba Kikai Kabushiki Kaisha | Method and apparatus for controlling cylinder grinding machines |
JP2930462B2 (en) | 1991-12-26 | 1999-08-03 | 豊田工機株式会社 | Grinding method |
DE19857359B4 (en) * | 1998-12-11 | 2005-09-15 | Erwin Junker Maschinenfabrik Gmbh | Method and device for machining workpieces with thin-walled areas having centric deviations in shape |
JP2002120147A (en) | 2000-10-17 | 2002-04-23 | Yamaha Motor Co Ltd | Cylindrical grinder |
DE10139894B4 (en) * | 2001-08-14 | 2009-09-10 | Erwin Junker Maschinenfabrik Gmbh | Method and device for centerless cylindrical grinding |
CH699061B1 (en) | 2006-07-17 | 2010-01-15 | Urs Tschudin | Grinding machine for grinding workpiece, has grinding and regulating wheels with leading edges, which are freely movable in area between wheels in horizontal direction to adjust dimension between workpiece and wheels |
ES2375311T3 (en) * | 2007-02-06 | 2012-02-28 | Urs Tschudin | RECTIFIER FOR THE RECTIFICATION OF PARTS BETWEEN POINTS, AS WELL FOR RECTIFICATION WITHOUT POINTS AS WELL AS TO A RECTIFIED PROCEDURE. |
DE102007023894A1 (en) * | 2007-05-23 | 2008-11-27 | Robert Bosch Gmbh | Device for circular grinding of section of component, has large length to diameter ratio, and component is held outside working section along axis of rotation between two holding devices |
DE102008045842B4 (en) | 2008-09-05 | 2012-07-12 | Emag Holding Gmbh | Method and grinding machine for grinding elongate workpieces |
DE102010036065B4 (en) * | 2010-09-01 | 2014-02-06 | Erwin Junker Grinding Technology A.S. | Method for cylindrical grinding of a workpiece, the workpiece-containing system and device for centerless cylindrical grinding of the system |
CN102773776A (en) * | 2012-08-21 | 2012-11-14 | 宝钢发展有限公司 | Bar centerless grinding technology and special knife board adjusting device thereof |
DE102012223276B4 (en) * | 2012-12-14 | 2015-09-03 | Erwin Junker Grinding Technology A.S. | METHOD AND CIRCULAR GRINDING MACHINE FOR TIP-FREE CIRCULAR GRINDING |
WO2014103806A1 (en) * | 2012-12-25 | 2014-07-03 | 日本精工株式会社 | Method and device for grinding metal annular member |
DE102014005059A1 (en) | 2014-04-05 | 2014-11-06 | Daimler Ag | Grinding machine for external cylindrical grinding of a component |
-
2015
- 2015-04-13 DE DE102015206565.0A patent/DE102015206565B4/en active Active
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2016
- 2016-04-08 ES ES16715325T patent/ES2930675T3/en active Active
- 2016-04-08 EP EP16715325.3A patent/EP3283257B1/en active Active
- 2016-04-08 US US15/564,684 patent/US10766114B2/en active Active
- 2016-04-08 JP JP2017553409A patent/JP2018513025A/en active Pending
- 2016-04-08 WO PCT/EP2016/057856 patent/WO2016166036A1/en active Application Filing
- 2016-04-08 CN CN201680021468.6A patent/CN107530857B/en active Active
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DE102015206565B4 (en) | 2024-02-08 |
US10766114B2 (en) | 2020-09-08 |
JP2018513025A (en) | 2018-05-24 |
WO2016166036A1 (en) | 2016-10-20 |
CN107530857A (en) | 2018-01-02 |
DE102015206565A1 (en) | 2016-10-13 |
US20180085881A1 (en) | 2018-03-29 |
EP3283257B1 (en) | 2022-09-07 |
CN107530857B (en) | 2023-06-23 |
ES2930675T3 (en) | 2022-12-20 |
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