EP4194146A1 - Becherförmige hochgeschwindigkeits-radkühlstruktur - Google Patents

Becherförmige hochgeschwindigkeits-radkühlstruktur Download PDF

Info

Publication number
EP4194146A1
EP4194146A1 EP21855439.2A EP21855439A EP4194146A1 EP 4194146 A1 EP4194146 A1 EP 4194146A1 EP 21855439 A EP21855439 A EP 21855439A EP 4194146 A1 EP4194146 A1 EP 4194146A1
Authority
EP
European Patent Office
Prior art keywords
blade ring
water channel
inner water
radial direction
cooling
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
Application number
EP21855439.2A
Other languages
English (en)
French (fr)
Inventor
Jingxin SONG
Anning LIANG
Yong YE
Huiling LONG
Xinling GUO
Liang Zhao
Zhiyong Wang
Renjie Liu
Fengming Qin
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.)
Guilin Champion Union Diamond Co Ltd
Original Assignee
Guilin Champion Union Diamond Co 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.)
Filing date
Publication date
Priority claimed from CN202021645795.9U external-priority patent/CN212218225U/zh
Priority claimed from CN202010796438.0A external-priority patent/CN111958508A/zh
Application filed by Guilin Champion Union Diamond Co Ltd filed Critical Guilin Champion Union Diamond Co Ltd
Publication of EP4194146A1 publication Critical patent/EP4194146A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions

Definitions

  • the present invention relates to the field of cup-shaped wheel technologies, and in particular to a cooling structure of a high-speed cup-shaped wheel.
  • a cup-shaped wheel mainly works in three major modes.
  • a front ring works, and this mode is characterized in that an axial height at an outer circle of a working surface of a blade ring is lower than an axial height at an inner circle of the working surface of the blade ring, and the inner circle of the working surface of the blade ring is finally in contact with a workpiece.
  • the second mode as shown in FIG. 3 and FIG.
  • a back ring works, and this mode is characterized in that the axial height at the outer circle of the working surface of the blade ring is higher than the axial height at the inner circle of the working surface of the blade ring, and the outer circle of the working surface of the blade ring is finally in contact with the workpiece.
  • a third mode as shown in FIG. 5 , both the front ring and the back ring work, and this mode is characterized in that the axial height at the outer circle of the working surface of the blade ring is lower than the axial height at the inner circle of the working surface of the blade ring, and the inner circle of the working surface of the blade ring is finally in contact with the workpiece.
  • an axial height difference between an outer diameter and an inner diameter of the grinding surface shows a curved surface form associated with the depth-of-cut.
  • a through-blade ring-type cup-shaped grinding wheel of the prior art two adjacent blades are spaced apart to form a water passage channel capable of delivering cooling water to a working surface, and the water passage channel has a through structure in a radial direction of a blade ring.
  • the cup-shaped grinding wheel rotates at a high speed, most of the cooling water entering the blade ring via an inner radial cavity will be thrown out toward the outer circle side of the blade ring via the water passage channel under a centrifugal force since the water passage channel has a through structure in the radial direction of the blade ring, such that the cooling effect on the working surface is extremely poor.
  • the amount of cooling water flowing along the inner circle sidewall of the blade ring to the working surface of the blade ring is very small, and the water in a bundle state is easily atomized into small water droplets by an "airflow barrier", which attenuates the cooling effect. Therefore, a region of the working surface close to the inner circle of the blade ring has no cooling water or insufficient cooling water, failing to achieve sufficient cooling.
  • an inner blade ring-type cup-shaped grinding wheel of the prior art the outer side of a blade ring is blocked, that is, an end of a water passage channel close to an outer circle of the blade ring is blocked.
  • the cup-shaped grinding wheel rotates at a high speed, most of the cooling water entering an inner circle of the blade ring via an inner radial cavity will tend to gather at the end of the water passage channel close to the outer circle of the blade ring under a centrifugal force, and be thrown out from a region of the working surface close to the outer circle of the blade ring, and the region of the working surface close to the outer circle of the blade ring can be sufficiently cooled at this time.
  • the region of the working surface close to the inner circle of the blade ring has no cooling water or insufficient cooling water, failing to achieve sufficient cooling.
  • an object of the present invention is to provide a cooling structure of a high-speed cup-shaped wheel, in order to improve the cooling efficiency and the utilization efficiency of cooling water and advantageously improve the grinding stability and grinding quality.
  • a cooling structure of a high-speed cup-shaped wheel includes a base and a blade ring, wherein the blade ring is arranged on the base and is fixedly connected to the base; the blade ring is provided with a plurality of water channel groups, which is sequentially arranged at intervals in a circumferential direction of the blade ring; and each of the water channel groups includes two or more inner water channels, which are sequentially arranged at intervals in the circumferential direction of the blade ring, the width of each of the two or more inner water channels in a radial direction of the blade ring being gradually increased.
  • the present invention has the following beneficial effects: the cooling water flowing out of the two or more inner water channels different in width can cover the entire working surface, thereby improving the cooling efficiency for the working surface and avoiding the failure of sufficient cooling on some regions of the working surface; the cooling water covers the entire working surface, such that the utilization efficiency of the cooling water can be effectively improved; the influences from machining parameters can also be reduced to advantageously improve the grinding stability and grinding quality; and the cooling water covering the entire working surface can also allow the cup-shaped wheel to adapt to high-speed grinding.
  • the present invention can implement further improvements as described below.
  • a number of the inner water channels in each of the water channel groups has a directly proportional relationship with a depth-of-cut of the blade ring.
  • the beneficial effect of adopting the above-mentioned further solution is that, with more inner water channels in each water channel group, the outflow uniformity of the cooling water is improved to ensure that the cooling water completely covers the entire working surface, thereby meeting the requirement of the cup-shaped wheel for high-speed machining and improving the cooling efficiency and cooling completeness.
  • a width difference between two adjacent inner water channels in each of the water channel groups in the radial direction of the blade ring has an inversely proportional relationship with the number of the inner water channels.
  • the beneficial effect of adopting the above-mentioned further solution is that when the cooling water is allowed to flow through the two or more inner water channels, the outer or inner circle edge of the blade ring can be covered with the cooling water to ensure that the cooling water completely covers the entire working surface, thereby meeting the requirement of the cup-shaped wheel for high-speed machining and improving the cooling efficiency and cooling completeness.
  • each of the inner water channels in each of the water channel groups in the radial direction of the blade ring the larger a circumferential spacing between the inner water channel and the adjacent inner water channel thereof.
  • the beneficial effect of adopting the above-mentioned further solution is that with larger circumferential spacing between adjacent inner water channels, the strength of the working surface corresponding to a region between two adjacent inner water channels is ensured, such that the cup-shaped wheel can adapt to high-speed grinding.
  • a spacing between the inner water channel, having a maximum width in the radial direction of the blade ring, in each of the water channel groups and the adjacent inner water channel thereof is W1; a spacing between the inner water channel, having a minimum width in the radial direction of the blade ring, in the water channel group and the adjacent inner water channel thereof is W2; a spacing between the inner water channel, having the minimum width in the radial direction of the blade ring, in the water channel group and the inner water channel, having the maximum width in the radial direction of the blade ring, in the adjacent water channel group thereof is W3; and W1>W3>W2.
  • the beneficial effect of adopting the above-mentioned further solution is that ensuring the strength of the working surface corresponding to the region between two adjacent inner water channels can further ensure the strength of the working surface corresponding to a region between two adjacent water channel groups, such that the cup-shaped wheel can adapt to high-speed grinding.
  • a cooling coverage area between the inner water channel, having the maximum width in the radial direction of the blade ring, in each of the water channel groups and the adjacent inner water channel thereof is S 1; a cooling coverage area between the inner water channel, having the minimum width in the radial direction of the blade ring, in the water channel group and the adjacent inner water channel thereof is S2; a cooling coverage area between the inner water channel, having the minimum width in the radial direction of the blade ring, in the water channel group and the inner water channel, having the maximum width in the radial direction of the blade ring, in the adjacent water channel group thereof is S3; and S1>S3>S2.
  • the beneficial effect of adopting the above-mentioned further solution is that ensuring the strength of the working surface corresponding to the region between two adjacent inner water channels can further ensure the strength of the working surface corresponding to a region between two adjacent water channel groups, such that the cup-shaped wheel can adapt to high-speed grinding.
  • the inner water channel, having the maximum width in the radial direction of the blade ring, in each of the water channel groups is close to an outer circle edge of the blade ring.
  • the beneficial effect of adopting the above-mentioned further solution is that the cooling water flowing out of the inner water channel having the maximum width in the radial direction of the blade ring can cover the outer circle edge of the blade ring to improve the cooling efficiency.
  • the two or more inner water channels each have a roundabout structure, and an axis of each of the two or more inner water channels deviates from a circle center of the blade ring.
  • each of the water channel groups includes a water passage channel, which is arranged at a side of the inner water channel, having the largest length in the radial direction of the blade ring, in the water channel group.
  • the beneficial effect of adopting the above-mentioned further solution is that the cooling water is thrown out via the water passage channels towards the outer circle of the blade ring, in order to cover the outer circle region of the blade ring, thereby improving the cooling efficiency of the blade ring.
  • the water passage channel has a roundabout structure, and has an axis deviating from the circle center of the blade ring.
  • a cooling structure of a high-speed cup-shaped wheel includes a base 1 and a blade ring 2.
  • the blade ring 2 is arranged on the base 1 and fixedly connected to the base 1.
  • the blade ring 2 is provided with a plurality of water channel groups 3, which is sequentially arranged at intervals in a circumferential direction of the blade ring 2.
  • Each of the water channel groups 3 includes two or more inner water channels 3.1, which are sequentially arranged at intervals in the circumferential direction of the blade ring 2.
  • the width of each of the two or more inner water channels 3.1 in a radial direction of the blade ring 2 is gradually increased.
  • Cooling water is introduced at the center of the base 1 and enters the inner water channels 3.1. Under the action of a centrifugal force, the cooling water flows from the end of each inner water channel 3.1 close to the inner circle of the blade ring 2 to the end of the inner water channel 3.1 close to the outer circle of the blade ring 2. Because the end of the inner water channel 3.1 close to the outer circle of the blade ring 2 is blocked, the cooling water flows out to a working surface 2.1 of the blade ring 2, and flows on the working surface 2.1 along a tangential direction of the inner water channel 3.1, such that the cooling water cools a partial region of the working surface 2.1.
  • each of the two or more inner water channels 3.1 in the radial direction of the blade ring 2 increases gradually, and the cooling water flowing out of the inner water channels 3.1 different in width can cover the entire working surface 2.1, thereby improving the cooling efficiency for the working surface 2.1 and avoiding the failure of sufficient cooling on some regions of the working surface 2.1; the cooling water covers the entire working surface 2.1, such that the utilization efficiency of the cooling water can be effectively improved; the influences from machining parameters can also be reduced to advantageously improve the grinding stability and grinding quality; and the cooling water covering the entire working surface 2.1 can also allow the cup-shaped wheel to adapt to high-speed grinding.
  • One end of the inner water channel 3.1 is communicated to the inner circle of the blade ring 2, and the other end of the inner water channel 3.1 is close to the outer circle of the blade ring 2 and is blocked.
  • the cooling structure is simple and is convenient to machine, and the cost can be effectively reduced.
  • the number of the inner water channels 3.1 in each of the water channel groups 3 has a directly proportional relationship with a depth-of-cut of the blade ring 2.
  • a width difference between two adjacent inner water channels 3.1 in each of the water channel groups 3 in the radial direction of the blade ring 2 has an inversely proportional relationship with the number of the inner water channels 3.1.
  • the outer or inner circle edge of the blade ring 2 can be covered with the cooling water to ensure that the cooling water completely covers the entire working surface 2.1, thereby meeting the requirement of the cup-shaped wheel for high-speed machining and improving the cooling efficiency and cooling completeness.
  • the strength of the working surface 2.1 corresponding to the region between the two adjacent inner water channels 3.1 is ensured, such that the cup-shaped wheel can adapt to high-speed grinding.
  • W1 is also a circumferential distance between the inner water channel 3.1 having the maximum width in the radial direction of the blade ring 2 and the adjacent inner water channel 3.1 thereof;
  • W2 is also a circumferential distance between the inner water channel 3.1 having the minimum width in the radial direction of the blade ring 2 and the adjacent inner water channel 3.1;
  • W3 is also a circumferential distance between the inner water channel 3.1 having the minimum width in the radial direction of the blade ring 2 and the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, in the adjacent water channel group 3.
  • the strength of the working surface 2.1 corresponding to a region between the two adjacent inner water channels 3.1 is ensured, and the strength of the working surface 2.1 corresponding to a region between the two adjacent channel groups 3 is also ensured, such that the cup-shaped wheel can adapt to high-speed grinding.
  • a cooling coverage area between the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, in each of the water channel groups 3 and the adjacent inner water channel 3.1 thereof is S1;
  • a cooling coverage area between the inner water channel 3.1, having the minimum width in the radial direction of the blade ring 2, in the water channel group 3 and the adjacent inner water channel 3.1 thereof is S2;
  • a cooling coverage area between the inner water channel 3.1, having the minimum width in the radial direction of the blade ring 2, in the water channel group 3 and the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, in the adjacent water channel group 3 thereof is S3; and S1>S3>S2.
  • the inner water channel 3.1 having the maximum width in the radial direction of the blade ring 2, in each of the water channel groups 3 is close to an outer circle edge of the blade ring 2.
  • the end of the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, close to the outer circle edge of the blade ring 2 is infinitely close to the outer circle edge of the blade ring 2 to allow that a spacing between the inner water channel 3.1 and the outer circle edge of the blade ring 2 is infinitely close to zero, such that the cooling water flowing out from the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, can cover the outer circle edge of the blade ring 2, thereby improving the cooling efficiency.
  • the two or more inner water channels 3.1 each have a roundabout structure, and an axis of each of the two or more inner water channels 3.1 deviates from a circle center of the blade ring 2.
  • a cooling structure of a high-speed cup-shaped wheel includes a base 1 and a blade ring 2.
  • the blade ring 2 is arranged on the base 1 and fixedly connected to the base 1.
  • the blade ring 2 is provided with a plurality of water channel groups 3, which is sequentially arranged at intervals in a circumferential direction of the blade ring 2.
  • Each of the water channel groups 3 includes two or more inner water channels 3.1, which are sequentially arranged at intervals in the circumferential direction of the blade ring 2.
  • the width of each of the two or more inner water channels 3.1 in a radial direction of the blade ring 2 is gradually increased.
  • Cooling water is introduced at the center of the base 1 and enters the inner water channels 3.1. Under the action of a centrifugal force, the cooling water flows from the end of each inner water channel 3.1 close to the inner circle of the blade ring 2 to the end of the inner water channel 3.1 close to the outer circle of the blade ring 2. Because the end of the inner water channel 3.1 close to the outer circle of the blade ring 2 is blocked, the cooling water flows out to a working surface 2.1 of the blade ring 2, and flows on the working surface 2.1 along a tangential direction of the inner water channel 3.1, such that the cooling water cools a partial region on the working surface 2.1.
  • each of the two or more inner water channels 3.1 in the radial direction of the blade ring 2 increases gradually, and the cooling water flowing out of the inner water channels 3.1 different in width can cover the entire working surface 2.1, thereby improving the cooling efficiency for the working surface 2.1 and avoiding the failure of sufficient cooling on some regions of the working surface 2.1; the cooling water covers the entire working surface 2.1, such that the utilization efficiency of the cooling water can be effectively improved; the influences from machining parameters can also be reduced to advantageously improve the grinding stability and grinding quality; and the cooling water covering the entire working surface 2.1 can also allow the cup-shaped wheel to adapt to high-speed grinding.
  • One end of the inner water channel 3.1 is communicated to the inner circle of the blade ring 2, and the other end of the inner water channel 3.1 is close to the outer circle of the blade ring 2 and is blocked.
  • the cooling structure is simple and is convenient to machine, and the cost can be effectively reduced.
  • the number of the inner water channels 3.1 in each of the water channel groups 3 has a directly proportional relationship with a depth-of-cut of the blade ring 2.
  • a width difference between two adjacent inner water channels 3.1 in each of the water channel groups 3 in the radial direction of the blade ring 2 has an inversely proportional relationship with the number of the inner water channels 3.1.
  • the width of the inner water channel 3.1, having the minimum width in the radial direction of the blade ring 2, in each of the water channel groups 3 is smaller. That is, the width of each inner water channel 3.1 in the radial direction of the blade ring 2 decreases with the increase of the depth-of-cut of the blade ring 2.
  • the outer or inner circle edge of the blade ring 2 can be covered with the cooling water to ensure that the cooling water completely covers the entire working surface 2.1, thereby meeting the requirement of the cup-shaped wheel for high-speed machining and improving the cooling efficiency and cooling completeness.
  • the strength of the working surface 2.1 corresponding to a region between the two adjacent inner water channels 3.1 is ensured, such that the cup-shaped wheel can adapt to high-speed grinding.
  • the strength of the working surface 2.1 corresponding to the region between the two adjacent inner water channels 3.1 is ensured, and the strength of the working surface 2.1 corresponding to the region between the two adjacent channel groups 3 is also ensured, such that the cup-shaped wheel can adapt to high-speed grinding.
  • a cooling coverage area between the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, in each of the water channel groups 3 and the adjacent inner water channel 3.1 thereof is S1;
  • a cooling coverage area between the inner water channel 3.1, having the minimum width in the radial direction of the blade ring 2, in the water channel group 3 and the adjacent inner water channel 3.1 thereof is S2;
  • a cooling coverage area between the inner water channel 3.1, having the minimum width in the radial direction of the blade ring 2, in the water channel group 3 and the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, in the adjacent water channel group 3 thereof is S3; and S1>S3>S2.
  • the inner water channel 3.1 having the maximum width in the radial direction of the blade ring 2, in each of the water channel groups 3 is close to an outer circle edge of the blade ring 2.
  • the end of the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, close to the outer circle edge of the blade ring 2 is infinitely close to the outer circle edge of the blade ring 2 to allow that a spacing between the inner water channel 3.1 and the outer circle edge of the blade ring 2 is infinitely close to zero, such that the cooling water flowing out from the inner water channel 3.1, having the maximum width in the radial direction of the blade ring 2, can cover the outer circle edge of the blade ring 2, thereby improving the cooling efficiency.
  • each of the water channel groups 3 includes a water passage channel 3.2, which is arranged at a side of the inner water channel 3.1, having the largest length in the radial direction of the blade ring 2, in the water channel group 3.
  • the cooling water is introduced at the center of the base 1 and enters the water passage channels 3.2. Under the action of a centrifugal force, the cooling water is thrown out towards the outer circle side of the blade ring 2 to cover the outer circle region of the blade ring 2, thereby improving the cooling efficiency of the blade ring 2.
  • the two or more inner water channels 3.1 each have a roundabout structure, and an axis of each of the two or more inner water channels 3.1 deviates from a circle center of the blade ring 2; and the water passage channel 3.2 has a roundabout structure, and has an axis deviating from the circle center of the blade ring 2.
  • the two or more inner water channels 3.1 and the water passage channels 3.2 each have a roundabout structure, and an axis of each of the two or more inner water channels 3.1 and the water passage channels 3.2 deviates from the circle center of the blade ring 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP21855439.2A 2020-08-10 2021-08-05 Becherförmige hochgeschwindigkeits-radkühlstruktur Pending EP4194146A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN202021645795.9U CN212218225U (zh) 2020-08-10 2020-08-10 一种高速杯形轮冷却结构
CN202010796438.0A CN111958508A (zh) 2020-08-10 2020-08-10 一种高速杯形轮冷却结构
PCT/CN2021/110855 WO2022033386A1 (zh) 2020-08-10 2021-08-05 一种高速杯形轮冷却结构

Publications (1)

Publication Number Publication Date
EP4194146A1 true EP4194146A1 (de) 2023-06-14

Family

ID=80247716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21855439.2A Pending EP4194146A1 (de) 2020-08-10 2021-08-05 Becherförmige hochgeschwindigkeits-radkühlstruktur

Country Status (5)

Country Link
US (1) US20230294245A1 (de)
EP (1) EP4194146A1 (de)
JP (1) JP2023532777A (de)
KR (1) KR20230034292A (de)
WO (1) WO2022033386A1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110060380A (ko) * 2009-11-30 2011-06-08 오동석 다이아몬드공구
CN203738615U (zh) * 2014-02-28 2014-07-30 自贡硬质合金有限责任公司 一种双端面磨床用砂轮
CN205588162U (zh) * 2016-05-10 2016-09-21 桂林创源金刚石有限公司 一种通齿与内齿结合的金刚石杯形磨边砂轮
JP7227754B2 (ja) * 2018-12-12 2023-02-22 株式会社ディスコ 研削装置
CN212095976U (zh) * 2020-03-30 2020-12-08 桂林创源金刚石有限公司 一种高转速杯形砂轮
CN111958508A (zh) * 2020-08-10 2020-11-20 桂林创源金刚石有限公司 一种高速杯形轮冷却结构
CN112828782A (zh) * 2021-02-08 2021-05-25 宋京新 一种高转速抛光轮

Also Published As

Publication number Publication date
JP2023532777A (ja) 2023-07-31
US20230294245A1 (en) 2023-09-21
WO2022033386A1 (zh) 2022-02-17
KR20230034292A (ko) 2023-03-09

Similar Documents

Publication Publication Date Title
EP4129572A1 (de) Topfförmige schleifscheibe mit hoher rotationsgeschwindigkeit
US3856433A (en) Liquid cooled turbine bucket with dovetailed attachment
EP4194146A1 (de) Becherförmige hochgeschwindigkeits-radkühlstruktur
EP4023393A1 (de) Werkzeugkühlmechanismus
US10369681B2 (en) Cutting disk
CN212218224U (zh) 一种全磨削面正相关通水结构的异形轮
CN209318874U (zh) 一种凸半圆铣刀
EP4151364A1 (de) Speziell geformte räder mit positiver korrelationswasserdurchgangsstruktur für vollschleifenfläche
CN111590476A (zh) 一种全磨削面正相关通水结构的异形轮
CN111958508A (zh) 一种高速杯形轮冷却结构
CN210909605U (zh) 一种新型钹型砂轮
CN212218225U (zh) 一种高速杯形轮冷却结构
CN212420965U (zh) 一种提高冷却水利用率的结构
CN215847689U (zh) 复合结构杯形砂轮
CN210254523U (zh) 一种圆形锯片
CN111546250B (zh) 一种高速杯形砂轮冷却结构及杯形砂轮
CN209787864U (zh) 一种磨刀谷型割草锯片
CN211760865U (zh) 一种磨片过程中自散热的砂轮
JPWO2022033386A5 (de)
CN221186056U (zh) 一种陶瓷加工磨轮
CN208289003U (zh) 电主轴的密封结构及电主轴
CN212762952U (zh) 一种高强度钢专用磨片砂轮
CN218875093U (zh) 一种侧边抛光机吸尘机构
CN219974672U (zh) 一种自润滑水轮机导叶轴承
CN220881976U (zh) 一种具有水帘式汇流盘压板的磨具

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230227

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)