EP4149718A1 - Vorrichtung und verfahren zum spitzenlosen schleifen - Google Patents
Vorrichtung und verfahren zum spitzenlosen schleifenInfo
- Publication number
- EP4149718A1 EP4149718A1 EP21723123.2A EP21723123A EP4149718A1 EP 4149718 A1 EP4149718 A1 EP 4149718A1 EP 21723123 A EP21723123 A EP 21723123A EP 4149718 A1 EP4149718 A1 EP 4149718A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide device
- cover
- upper guide
- base body
- outlet openings
- 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.)
- Pending
Links
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
- B24B5/35—Accessories
-
- 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
- B24B5/307—Means for supporting 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
- 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 invention relates to a trained according to the preamble of claim 1 before direction for overhead guidance in centreless grinding.
- the invention also relates to a method for centerless grinding.
- a generic upper guide device which is intended for use in spit zenlose grinding, is known from DD 242 020 A1.
- a workpiece is moved into a grinding gap as soon as a gripper device has deposited the workpiece and leaves the grinding gap, with extremely thin workpieces being able to be handled in the grinding gap.
- the upper guide device according to DD 242 020 A1 has the shape of a curved rail ne which is traversed by a cavity. If a vacuum is generated in the cavity, a workpiece can be sucked in with it.
- pressure nozzles can be arranged on a contact surface of the known overhead guide device provided for contacting the workpiece in order to guide the workpiece downward from a support rail.
- DD 116 779 A1 discloses a method and a control body for through-grinding barrel rollers on centerless cylindrical grinding machines.
- barrel rollers are machined in the grinding gap between a grinding wheel and a control body provided with a transport helix.
- the barrel rollers are guided through the grinding gap by the transport helix, changing their axis position in a plane that runs through the grinding wheel axis.
- a compactly designed centerless grinding machine which is described in DE 102014 115 149 B3, comprises two driven spindles, namely a grinding spindle and a control spindle, which are movable relative to one another and can be delivered to a workpiece support.
- a support rail for a centerless grinding machine is described in detail in DE 102015 106 060 A1.
- the support rail on which the workpiece to be machined rests has a support rail and a workpiece support rail arranged on this.
- the workpiece support rail can be clamped on the carrier rail with the aid of clamping elements.
- DE 10 2016 215 065 A1 describes a machine tool for grinding round bodies, which also enables a tubular semi-finished product to be cut using a grinding body.
- DE 199 16 002 A1 discloses an arrangement for supplying a Schleifein handle point with cooling lubricant.
- This arrangement comprises a feed nozzle, the nozzle mouth of which is positioned against the circumferential surface of a grinding wheel, forming a narrow application gap.
- the invention is based on the object of specifying options for centerless grinding that have been further developed compared with the prior art mentioned, which are characterized by a particularly high level of process reliability, even under the conditions of series production.
- the overhead guide device comprises at least one fluid channel, which is designed as a cooling lubricant channel with a feed line opening and a plurality of outlet openings.
- the upper guide device thus represents a component with multiple uses. Due to the integration of the cooling lubricant supply in the upper guide device, a reliable, targeted cooling lubricant line to the work area is possible even in confined spaces. With the aid of the plurality of outlet openings, the cooling lubricant can be distributed in a defined manner.
- the outlet openings of the upper guide device are arranged in a row. This allows a fan or curtain to be formed from several individual jets of cooling lubricant emerging from the Obereckvor device, which is directed onto the workpiece.
- the upper guide device comprises a flat base body and a cover screwed onto it, with at least a section of the cooling lubricant channel, in particular most of the cooling lubricant channel, being formed between the base body and the cover.
- the cooling lubricant channel which is branched in a possible embodiment, can be formed here by cutouts in the base body and / or in the cover.
- the outlet openings arranged along a straight line can be located directly on an edge of the cover which rests on the base body.
- outlet openings with a circular cross section can be formed by recesses with a semicircular contour which are molded into both the base body and the cover. It is also possible to provide the recesses exclusively in the Grundkör by or exclusively in the cover, while the other part has a continuously smooth edge.
- a total of 40, 80 or more outlet openings are arranged one behind the other at short intervals so that the cooling lubricant emerging from the transfer device strikes the workpiece to be processed practically as a closed film.
- the cover only covers part of the base body of the upper guide device.
- fastening contours in particular special in the form of fastening slots, which enable the upper guide device to be fastened in a surrounding structure.
- a particularly flexible adaptation to different surrounding structures is possible in configurations in which there is a fastening slot on both sides of the cover, with a straight line placed in the longitudinal direction through both fastening slots defining a fastening axis that runs parallel to one of the outlet openings of the overhead guide device through all of the above laid straight line is arranged.
- the base body and the cover of the upper guide device are, for example, metal parts that are machined, in particular by milling.
- Primary forming manufacturing processes for example casting or powder metallurgy-specific processes, can also be used to manufacture the individual components of the transfer device.
- the overhead guide device enables integrated process cooling for centerless through-feed grinding.
- the assembly of a separate coolant nozzle on a device for moving a workpiece is accordingly no longer necessary.
- Fig. 1 shows a device for upper guidance during centerless grinding in a perspective view
- FIG. 2 shows a sectional view of a base body of the upper guide device according to FIG. 1,
- FIG. 5 shows a base element of the upper guide device formed from the base body and a connection piece for a cooling lubricant in a side view
- FIG. 6 shows the arrangement according to FIG. 5 in a perspective illustration
- the upper guide device 1 is built up from a flat base body 2, a flat cover 3 and a connector 5 for a cooling lubricant.
- the base body 2 with the attached connection piece 4 is referred to as the base element 5 of the upper guide device 1.
- a fluid channel 6 for the cooling lubricant, which is used during grinding, that is to say centerless through grinding, is largely given by a cavity formed between the base body 2 and the cover 3.
- the cooling lubricant is fed into the upper guide device 1 through a feed opening 7 in the connection piece 4.
- the cooling lubricant emerges from the upper guide device 1 through a large number of outlet openings 8.
- the cover 3 is screwed to the base body 2. Bores in the cover 3 are denoted by 9, and threaded bores in the base body 2 are denoted by 10. In the exemplary embodiment, the cover 3 is fastened to the base body 2 with a total of eighteen screws 11.
- the cover 3 has a wide section 12 and a comparatively narrow section 13, with a transition section 14 being formed between these sections 12, 13.
- An inlet section of the fluid channel 6, labeled 15 and starting from the connection piece 4, is formed by a recess in the base body 2 and covered by the wide section 12 and transition section 14 of the cover 3.
- the introduction section 15 merges into a distribution section 16 which extends over almost the entire width of the cover 3.
- the width of the lid 3 is denoted by B3, the width of the base body 2, which is identical to the width of the entire OberRICvor device 1, is denoted by B2.
- the width B3 of the cover 3 is more than 50% of the total width B2 of the overfeed device 1.
- a circumferential delimiting contour which encompasses the introduction section 15 and the distribution section 16 and which is formed by the base body 2 is denoted by 17.
- sealing elements known per se can be used. medium be provided.
- a section of the delimiting contour 17 represents a lower edge 18 of the fluid channel 6.
- the term “lower edge” signals the typical, but not the only possible, installation situation of the upper guide device 1.
- the lower edge of the cover 3 is denoted by 19. All outlet openings 8 are arranged in a single row on the lower edge 19, whereby they are formed by Aussparun conditions in the cover 3.
- a straight line applied to the outlet openings 8 at the lower edge 19 is referred to as the reference straight line BG.
- the cooling lubricant exits the overhead guide device 1 in the form of a cooling lubricant curtain through the closely adjacent outlet openings 8.
- the upper guide device 1 has a narrow, flat structure, which also enables use in confined spaces, while at the same time the linearly arranged outlet openings 8 provide a very good, defined supply with cooling lubricant is given during centerless grinding.
- the fastening slots 20, 21 are each located in the extension of an elongated hole 22 which is arranged in the base body 2 above the narrow section 13 of the cover 3. A straight line laid lengthways through the two fastening slots 20, 21 and also running through the elongated hole 22 is designated as the fastening axis BA and is spaced parallel from the reference straight line BG.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020112633.6A DE102020112633A1 (de) | 2020-05-11 | 2020-05-11 | Vorrichtung und Verfahren zum spitzenlosen Schleifen |
| PCT/DE2021/100351 WO2021228309A1 (de) | 2020-05-11 | 2021-04-16 | Vorrichtung und verfahren zum spitzenlosen schleifen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4149718A1 true EP4149718A1 (de) | 2023-03-22 |
Family
ID=75786873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21723123.2A Pending EP4149718A1 (de) | 2020-05-11 | 2021-04-16 | Vorrichtung und verfahren zum spitzenlosen schleifen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4149718A1 (de) |
| CN (1) | CN115151375A (de) |
| DE (1) | DE102020112633A1 (de) |
| WO (1) | WO2021228309A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD116779A1 (de) | 1974-12-09 | 1975-12-12 | ||
| DD242020A1 (de) | 1985-10-29 | 1987-01-14 | Leipzig Mikrosa Veb | Vorrichtung zur oberfuehrung beim spitzenlosen aussenrundschleifen |
| JP3787739B2 (ja) | 1998-01-26 | 2006-06-21 | トヨタ自動車株式会社 | 冷風冷却を用いた機械加工装置 |
| DE19916002A1 (de) | 1999-04-09 | 2000-10-12 | Schaudt Maschinenbau Gmbh | Anordnung zur Versorgung einer Schleifeingriffsstelle mit Kühlschmierstoff |
| JP2004202655A (ja) | 2002-12-26 | 2004-07-22 | Shigiya Machinery Works Ltd | センターレス研削盤によるワーク研削方法並びにセンターレス研削盤及びこれに使用される上側ブレード |
| DE102014115149B3 (de) | 2014-10-17 | 2016-01-21 | Schaudt Mikrosa Gmbh | Schleifmaschine, insbesondere kompakt gestaltete spitzenlose Schleifmaschine |
| CN104589215A (zh) * | 2015-02-02 | 2015-05-06 | 亚新科凸轮轴(仪征)有限公司 | 高速凸轮磨用水嘴 |
| DE102015106060A1 (de) | 2015-04-21 | 2016-10-27 | Leistritz Produktionstechnik Gmbh | Auflageschiene für eine Spitzenlosschleifmaschine sowie Spitzenlosschleifmaschine mit einer solchen Auflageschiene |
| CN105290892B (zh) * | 2015-10-29 | 2017-09-26 | 江苏吉星新材料有限公司 | 一种无心磨床的蓝宝石晶棒外圆加工机构 |
| CN205765624U (zh) * | 2016-07-01 | 2016-12-07 | 江苏罡阳股份有限公司 | 磨床冷却液喷射装置 |
| DE102016215065A1 (de) | 2016-08-12 | 2018-02-15 | Schaeffler Technologies AG & Co. KG | Werkzeugmaschine zum Schleifen von mindestens einem Rundkörper, Schleifscheibe für die Werkzeugmaschine sowie Verfahren |
| CN110802448B (zh) * | 2019-11-02 | 2021-08-31 | 湖南镕耀有色金属有限公司 | 一种钨钢棒材的外圆打磨设备及其防跳动方法 |
-
2020
- 2020-05-11 DE DE102020112633.6A patent/DE102020112633A1/de active Pending
-
2021
- 2021-04-16 CN CN202180016855.1A patent/CN115151375A/zh active Pending
- 2021-04-16 EP EP21723123.2A patent/EP4149718A1/de active Pending
- 2021-04-16 WO PCT/DE2021/100351 patent/WO2021228309A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN115151375A (zh) | 2022-10-04 |
| WO2021228309A1 (de) | 2021-11-18 |
| DE102020112633A1 (de) | 2021-11-11 |
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