EP1433569B1 - Barrel-polishing apparatus - Google Patents

Barrel-polishing apparatus Download PDF

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Publication number
EP1433569B1
EP1433569B1 EP04006729A EP04006729A EP1433569B1 EP 1433569 B1 EP1433569 B1 EP 1433569B1 EP 04006729 A EP04006729 A EP 04006729A EP 04006729 A EP04006729 A EP 04006729A EP 1433569 B1 EP1433569 B1 EP 1433569B1
Authority
EP
European Patent Office
Prior art keywords
polishing
slide plate
rotational drive
electric current
barrel
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.)
Expired - Lifetime
Application number
EP04006729A
Other languages
German (de)
French (fr)
Other versions
EP1433569A2 (en
EP1433569A3 (en
Inventor
Shuji Kawasaki
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.)
Individual
Original Assignee
Individual
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 JP36190597A external-priority patent/JP3902634B2/en
Priority claimed from JP10061869A external-priority patent/JPH11216660A/en
Priority claimed from JP10198037A external-priority patent/JP2000015553A/en
Priority claimed from JP10260880A external-priority patent/JP2000071165A/en
Priority claimed from JP10319598A external-priority patent/JP2000141203A/en
Application filed by Individual filed Critical Individual
Priority claimed from EP98122869A external-priority patent/EP0922530B1/en
Publication of EP1433569A2 publication Critical patent/EP1433569A2/en
Publication of EP1433569A3 publication Critical patent/EP1433569A3/en
Publication of EP1433569B1 publication Critical patent/EP1433569B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00

Definitions

  • This invention relates to a barrel-polishing apparatus.
  • a barrel-polishing apparatus comprising a polishing medium bath with polishing mediums received therein, a base, a slide plate mounted on said base such that said slide plate is reciprocally moved in a direction of said polishing medium bath by reciprocal means, an electrically-operated rotational drive means mounted on said slide plate, a rotary shaft mounted on said electrically-operated rotational drive means and extending in a direction of reciprocal movement of said slide plate, and a workpiece attachment device mounted on a distal end portion of said rotary shaft and adapted to attach a workpiece to said rotary shaft.
  • polishing mediums are worn. Therefore, in the conventional apparatus, when the aggregate of polishing mediums has been partly worn, the workpiece is moved in the polishing medium bath in an effort to find a non-worn part of the polishing mediums and dipped in the non-worn part of the polishing mediums. By keep doing so in the polishing operation, a certain polishing effect can be obtained.
  • this invention it is the object of the present invention to provide, in order to obviate the shortcomings inherent in the prior art, a barrel-polishing apparatus, wherein a constant polishing effect can normally be obtained efficiently and automatically even in case an aggregate of the polishing mediums is partly worn (hereinafter referred to "this invention").
  • a barrel-polishing apparatus so as to achieve the above object comprises the features stated in claim 1.
  • the workpiece when the rotary torque of the workpiece in the polishing mediums is reduced to reduce the electric current supplied to the electrically-operated rotational drive means, the workpiece can be moved in the polishing mediums in such a manner as to increase the rotary torque.
  • the rotary torque of the workpiece in the polishing mediums is increased to increase the electric current supplied to the electrically-operated rotational drive means, the workpiece can be moved in the polishing mediums in such a manner as to reduce the rotary torque. Therefore, with use of this barrel-polishing apparatus, a constant rotary torque can normally be obtained even if the aggregate of polishing mediums is partly worn. Thus, a constant polishing effect can be obtained efficiently and automatically.
  • the slide plate is moved towards the polishing medium bath when the electric current supplied to the electrically-operated rotational drive means is smaller than a reference electric current and the slide plate is moved away from the polishing medium bath when the electric current supplied to the electrically-operated rotational drive means is larger than the reference electric current, the workpiece can easily be moved in the less-worn polishing mediums when the rotary torque is reduced and the workpiece can easily be moved in the more-worn polishing mediums when the rotary torque is increased.
  • the workpiece can easily be moved reciprocally with respect to the polishing medium bath.
  • reference character B denotes a barrel-polishing apparatus.
  • This barrel-polishing apparatus B includes a cylindrical polishing medium bath 20.
  • Reference numerals 21, 21, ... denote polishing mediums which are received in the polishing medium bath 20. Any mediums such as ceramic particles which are usually used, can be used as the polishing mediums 21, 21, ...
  • the polishing method may be a wet polishing or a dry polishing.
  • Reference numeral 22 denotes an upper end opening of the polishing medium bath 20. Through this upper end opening 22, a workpiece (vehicle wheel made of aluminum in this embodiment) W is dipped in the polishing mediums 21, 21, ...
  • reference numeral 11 denotes a support bed of the barrel-polishing apparatus B and reference numeral 40 denotes a base swingably mounted on this support bed 11.
  • This base 40 is slanted downwardly in a direction of the polishing medium bath 20. This slanting angle can appropriately be adjusted.
  • the base 40 can stop at an appropriate angle.
  • Reference numeral 52 denotes a geared engine mounted on the base 40
  • reference numeral 511 denotes a bolt member connected to the geared engine 52.
  • This bolt member 511 is rotatably supported by one pair of bearings 80, 80 such that it can rotate normally and backwardly about its axis in accordance with rotation of the geared engine 52.
  • This bolt member 51 is disposed along the slanted direction of the base 40.
  • Reference numerals 81, 81 denote guide members.
  • Reference numeral 50 denotes a slide plate
  • reference numerals 512, 512 denote nut members projecting from a lower surface of this slide plate 50.
  • the nut members 512, 512 of the slide plate 50 are threadingly engaged with the bolt member 511 of the base 40. Owing to this arrangement, the slide plate 50 can reciprocally slide in accordance with rotation of the bolt member 511.
  • the bolt member 511, the nut member 512 and the geared engine 52 correspond to the "reciprocal means" of this invention.
  • the workpiece (aluminum vehicle wheel) W is attached to a distal end of the rotary shaft 60 through a work attachment device (an air chuck) 87 and dipped in the polishing mediums 21, 21, ... of the polishing medium bath 20. Then, the rotational drive portion 61 is actuated to rotate the rotary shaft 60 and thus the workpiece W in the polishing mediums 21, 21, ...
  • Reference numeral 61 denotes a rotational drive portion (this rotational drive portion corresponds to the "electrically-operated rotary means" of this invention).
  • the rotational drive portion 61 is mounted on the slide plate 50.
  • the rotational drive portion 61 comprises an engine (AC or DC engine) and a reduction gear unit.
  • the rotational drive portion 61 can provide a circular motion through the rotary shaft 60.
  • the rotary shaft 60 extends along the axis of the bolt member 511, i.e., in the slanting direction of the base 40.
  • the engine (AC or DC) of the rotational drive portion 61 is driven by a power source 92. At that time, the electric current supplied to the engine is measured by a current detector means 93. The result of measurement thus obtained is sent to a control unit 94 where the result of measurement is compared with a preset value (this preset value corresponds to the "reference electric current" of this invention) and then used as a base for control the operation of the geared engine 52.
  • the polishing mediums 21, 21, ... of the polishing medium bath 20 are, in general, less worn towards the lower layer thereof and more worn towards the upper layer because of frequency of use.
  • the preset value of the control portion 94 is preliminarily established as a current value to be supplied to the engine in relation to a rotary torque required by the engine of the rotational drive portion 60 in consideration of the size of the workpiece W as an object to be polished, configuration of the workpiece W, a required degree of polishing, etc. This preset value is determined based on experience.
  • the preset value is determined in the control portion 94 based on the size, the configuration, etc. of the workpiece W.
  • the power source for the engine of the rotational drive portion 61 is turned on in the state that the workpiece W is dipped in the polishing mediums 21, 21, ... of the polishing medium bath 20. Then, the rotational drive portion 61 is actuated and the workpiece W is polished in the polishing mediums 21, 21, ... At that time, the electric current supplied to the engine of the rotational dove portion 61 is measured by the electric current detector means 93. Then, the result of measurement thus obtained is sent to the control unit 94 where the result of measurement is compared with the preset value.
  • the geared engine 52 When the result of measurement is larger than th preset value, i.e., when the rotary torque is large, the geared engine 52 is actuated to rotate the bolt portion 511, so that the slide plate 50 and thus the rotational drive portion 61 is retracted to bring the workpiece W to an upper layer portion of the polishing mediums 21, 21, ...and stop it at a position where the value of measurement of the electric current is equal to the preset value.
  • the geared engine 52 is actuated to rotate the bolt member 511 backwardly to move the slide plate 50 and thus, the rotational drive portion 61 forwardly, so that the workpiece W is brought to a lower layer portion of the polishing mediums 21, 21, ... and stop it at a position where the value of measurement of the electric current is equal to the preset value.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

    [FIELD OF THE INVENTION]
  • This invention relates to a barrel-polishing apparatus.
    • [PRIOR ART]
  • From GB 1 540 517 there is known a barrel-polishing apparatus comprising a polishing medium bath with polishing mediums received therein, a base, a slide plate mounted on said base such that said slide plate is reciprocally moved in a direction of said polishing medium bath by reciprocal means, an electrically-operated rotational drive means mounted on said slide plate, a rotary shaft mounted on said electrically-operated rotational drive means and extending in a direction of reciprocal movement of said slide plate, and a workpiece attachment device mounted on a distal end portion of said rotary shaft and adapted to attach a workpiece to said rotary shaft.
  • If a workpiece is polished while rotating the workpiece in polishing mediums, the polishing mediums are worn. Therefore, in the conventional apparatus, when the aggregate of polishing mediums has been partly worn, the workpiece is moved in the polishing medium bath in an effort to find a non-worn part of the polishing mediums and dipped in the non-worn part of the polishing mediums. By keep doing so in the polishing operation, a certain polishing effect can be obtained.
  • However, in such a conventional polishing apparatus, since the partial wear of the aggregate of polishing mediums is determined based on the perception or experience of the operator, much labor is required. In addition, since the result of determination is different depending on each operator, a constant polishing effect is difficult to be obtained in an efficient manner.
    • [OBJECTS OF THE INVENTION]
  • It is the object of the present invention to provide, in order to obviate the shortcomings inherent in the prior art, a barrel-polishing apparatus, wherein a constant polishing effect can normally be obtained efficiently and automatically even in case an aggregate of the polishing mediums is partly worn (hereinafter referred to "this invention").
    • [CONSTRUCTION OF THE INVENTION AND OPERATION AND EFFECTS THEREOF]
  • A barrel-polishing apparatus according to this invention so as to achieve the above object comprises the features stated in claim 1.
  • Accordingly, when the rotary torque of the workpiece in the polishing mediums is reduced to reduce the electric current supplied to the electrically-operated rotational drive means, the workpiece can be moved in the polishing mediums in such a manner as to increase the rotary torque. On the other hand, when the rotary torque of the workpiece in the polishing mediums is increased to increase the electric current supplied to the electrically-operated rotational drive means, the workpiece can be moved in the polishing mediums in such a manner as to reduce the rotary torque. Therefore, with use of this barrel-polishing apparatus, a constant rotary torque can normally be obtained even if the aggregate of polishing mediums is partly worn. Thus, a constant polishing effect can be obtained efficiently and automatically.
  • If the slide plate is moved towards the polishing medium bath when the electric current supplied to the electrically-operated rotational drive means is smaller than a reference electric current and the slide plate is moved away from the polishing medium bath when the electric current supplied to the electrically-operated rotational drive means is larger than the reference electric current, the workpiece can easily be moved in the less-worn polishing mediums when the rotary torque is reduced and the workpiece can easily be moved in the more-worn polishing mediums when the rotary torque is increased.
  • Also, if the base is slanted downwardly towards the polishing medium bath, the workpiece can easily be moved reciprocally with respect to the polishing medium bath.
    • [BRIEF DESCRIPTION OF THE DRAWINGS]
    • Fig. 1 is a sectional view of a barrel-polishing apparatus, showing an embodiment of this invention.
    [EMBODIMENTS]
  • In Fig. 1 reference character B denotes a barrel-polishing apparatus. This barrel-polishing apparatus B includes a cylindrical polishing medium bath 20. Reference numerals 21, 21, ... denote polishing mediums which are received in the polishing medium bath 20. Any mediums such as ceramic particles which are usually used, can be used as the polishing mediums 21, 21, ... The polishing method may be a wet polishing or a dry polishing.
  • Reference numeral 22 denotes an upper end opening of the polishing medium bath 20. Through this upper end opening 22, a workpiece (vehicle wheel made of aluminum in this embodiment) W is dipped in the polishing mediums 21, 21, ...
  • On the other hand, reference numeral 11 denotes a support bed of the barrel-polishing apparatus B and reference numeral 40 denotes a base swingably mounted on this support bed 11. This base 40 is slanted downwardly in a direction of the polishing medium bath 20. This slanting angle can appropriately be adjusted. The base 40 can stop at an appropriate angle. Reference numeral 52 denotes a geared engine mounted on the base 40, and reference numeral 511 denotes a bolt member connected to the geared engine 52. This bolt member 511 is rotatably supported by one pair of bearings 80, 80 such that it can rotate normally and backwardly about its axis in accordance with rotation of the geared engine 52. This bolt member 51 is disposed along the slanted direction of the base 40. Reference numerals 81, 81 denote guide members.
  • Reference numeral 50 denotes a slide plate, and reference numerals 512, 512 denote nut members projecting from a lower surface of this slide plate 50. The nut members 512, 512 of the slide plate 50 are threadingly engaged with the bolt member 511 of the base 40. Owing to this arrangement, the slide plate 50 can reciprocally slide in accordance with rotation of the bolt member 511. The bolt member 511, the nut member 512 and the geared engine 52 correspond to the "reciprocal means" of this invention.
  • The workpiece (aluminum vehicle wheel) W is attached to a distal end of the rotary shaft 60 through a work attachment device (an air chuck) 87 and dipped in the polishing mediums 21, 21, ... of the polishing medium bath 20. Then, the rotational drive portion 61 is actuated to rotate the rotary shaft 60 and thus the workpiece W in the polishing mediums 21, 21, ...
  • Reference numeral 61 denotes a rotational drive portion (this rotational drive portion corresponds to the "electrically-operated rotary means" of this invention). The rotational drive portion 61 is mounted on the slide plate 50. The rotational drive portion 61 comprises an engine (AC or DC engine) and a reduction gear unit. The rotational drive portion 61 can provide a circular motion through the rotary shaft 60. The rotary shaft 60 extends along the axis of the bolt member 511, i.e., in the slanting direction of the base 40.
  • The engine (AC or DC) of the rotational drive portion 61 is driven by a power source 92. At that time, the electric current supplied to the engine is measured by a current detector means 93. The result of measurement thus obtained is sent to a control unit 94 where the result of measurement is compared with a preset value (this preset value corresponds to the "reference electric current" of this invention) and then used as a base for control the operation of the geared engine 52.
  • The polishing mediums 21, 21, ... of the polishing medium bath 20 are, in general, less worn towards the lower layer thereof and more worn towards the upper layer because of frequency of use.
  • The preset value of the control portion 94 is preliminarily established as a current value to be supplied to the engine in relation to a rotary torque required by the engine of the rotational drive portion 60 in consideration of the size of the workpiece W as an object to be polished, configuration of the workpiece W, a required degree of polishing, etc. This preset value is determined based on experience.
  • Operation of this apparatus will now be described.
  • First, the preset value is determined in the control portion 94 based on the size, the configuration, etc. of the workpiece W.
  • In that condition, the power source for the engine of the rotational drive portion 61 is turned on in the state that the workpiece W is dipped in the polishing mediums 21, 21, ... of the polishing medium bath 20. Then, the rotational drive portion 61 is actuated and the workpiece W is polished in the polishing mediums 21, 21, ... At that time, the electric current supplied to the engine of the rotational dove portion 61 is measured by the electric current detector means 93. Then, the result of measurement thus obtained is sent to the control unit 94 where the result of measurement is compared with the preset value. When the result of measurement is larger than th preset value, i.e., when the rotary torque is large, the geared engine 52 is actuated to rotate the bolt portion 511, so that the slide plate 50 and thus the rotational drive portion 61 is retracted to bring the workpiece W to an upper layer portion of the polishing mediums 21, 21, ...and stop it at a position where the value of measurement of the electric current is equal to the preset value. On the other hand, when the value of measurement is smaller than the preset value, i.e., when the rotary torque is small, the geared engine 52 is actuated to rotate the bolt member 511 backwardly to move the slide plate 50 and thus, the rotational drive portion 61 forwardly, so that the workpiece W is brought to a lower layer portion of the polishing mediums 21, 21, ... and stop it at a position where the value of measurement of the electric current is equal to the preset value.

Claims (3)

  1. A barrel-polishing apparatus (B) comprising a polishing medium bath (20) with polishing mediums (21) received therein, a base (40), a slide plate (50) mounted on said base (40) such that said slide plate (50) is reciprocally moved in a direction of said polishing medium bath (20) by reciprocal means (52, 511, 512), an electrically-operated rotational drive means (61) mounted on said slide plate (50), a rotary shaft (60) mounted on said electrically-operated rotational drive means (61) and extending in a direction of reciprocal movement of said slide plate (50), and a workpiece attachment device (87) mounted on a distal end portion of said rotary shaft (60) and adapted to attach a workpiece (W) to said rotary shaft (60), characterized in that said barrel-polishing apparatus (B) further comprises a control unit (94) for controlling a reciprocal movement of said reciprocal means (52, 511, 512) by detecting an electric current supplied to said electrically-operated rotational drive means (61).
  2. A barrel-polishing apparatus (B) according to claim 1, characterized in that said slide plate (50) is moved towards said polishing medium bath (20) when the electric current supplied to said electrically-operated rotational drive means (61) is smaller than a reference electric current and said slide plate (50) is moved away from said polishing medium bath (20) when the electric current supplied to said electrically-operated rotational drive means (61) is larger than said reference electric current.
  3. A barrel-polishing apparatus (B) according to claim 1 or 2, characterized in that said base (40) is slanted downwardly towards said polishing medium bath (20).
EP04006729A 1997-12-10 1998-12-02 Barrel-polishing apparatus Expired - Lifetime EP1433569B1 (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
JP36190597A JP3902634B2 (en) 1997-12-10 1997-12-10 Barrel polishing equipment
JP36190597 1997-12-10
JP6186998 1998-02-04
JP10061869A JPH11216660A (en) 1998-02-04 1998-02-04 Barrel polishing device
JP19803798 1998-06-28
JP10198037A JP2000015553A (en) 1998-06-28 1998-06-28 Barrel polishing device
JP26088098 1998-08-30
JP10260880A JP2000071165A (en) 1998-08-30 1998-08-30 Barrel polishing device
JP31959898 1998-11-10
JP10319598A JP2000141203A (en) 1998-11-10 1998-11-10 Barrel polishing method
EP98122869A EP0922530B1 (en) 1997-12-10 1998-12-02 Barrel-polishing apparatus

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP98122869.5 Division 1998-12-02
EP98122869A Division EP0922530B1 (en) 1997-12-10 1998-12-02 Barrel-polishing apparatus

Publications (3)

Publication Number Publication Date
EP1433569A2 EP1433569A2 (en) 2004-06-30
EP1433569A3 EP1433569A3 (en) 2004-07-07
EP1433569B1 true EP1433569B1 (en) 2006-09-13

Family

ID=27523684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04006729A Expired - Lifetime EP1433569B1 (en) 1997-12-10 1998-12-02 Barrel-polishing apparatus

Country Status (4)

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EP (1) EP1433569B1 (en)
KR (1) KR100312640B1 (en)
CA (1) CA2255501C (en)
DE (2) DE69829452T2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010016175A (en) * 2000-11-20 2001-03-05 류창은 Abrasive machine of an automobile wheel
KR100424672B1 (en) * 2001-09-27 2004-03-27 (주) 디씨엠 vibration grinding apparatus
DE102011113167A1 (en) * 2011-09-14 2013-03-14 Otec Präzisionsfinish GmbH Method and device for the surface treatment of workpieces
GB2504282A (en) * 2012-07-24 2014-01-29 Royal Mint Ltd Method of manufacturing a coining die
CN104889878A (en) * 2014-03-07 2015-09-09 廊坊市北方天宇机电技术有限公司 Coning movement type finishing device suitable for wheel disc type parts and method thereof
CN110116361B (en) * 2019-04-29 2020-04-28 跃马轮毂(盱眙)有限公司 Aluminum alloy wheel hub batch polishing production line
CN112077675B (en) * 2020-09-17 2021-11-16 中国航发沈阳黎明航空发动机有限责任公司 Method for improving surface quality of turning of assembly matching part of rectifier by polishing
CN113059476B (en) * 2021-04-28 2022-12-16 重庆精鸿益科技股份有限公司 Intelligent door lock handle polishing device and polishing method
CN115056128B (en) * 2022-05-31 2024-03-22 深圳市施乐电气技术有限公司 Device and process for machining and forming outgoing line wiring sleeve of power transformer
CN114918814B (en) * 2022-06-30 2023-11-14 江苏稳润光电有限公司 Single deburring equipment for LED devices
CN115213803B (en) * 2022-07-14 2024-02-27 大连理工大学 Bearing ring outer raceway rotary dynamic pressure polishing device and working method thereof
CN117020921B (en) * 2023-10-08 2023-12-08 包头意升源新磁科技有限公司 Grinding device and annular neodymium iron boron polishing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532234B2 (en) * 1973-01-19 1978-01-26
JPS538898A (en) * 1976-07-13 1978-01-26 Ono Ietake Grinding method and device therefor
JPS63162153A (en) * 1987-11-17 1988-07-05 Tipton Mfg Corp Control device for barrel polishing device group

Also Published As

Publication number Publication date
EP1433569A2 (en) 2004-06-30
EP1433569A3 (en) 2004-07-07
KR100312640B1 (en) 2001-12-12
CA2255501C (en) 2004-03-23
KR19990062888A (en) 1999-07-26
CA2255501A1 (en) 1999-06-10
DE69829452T2 (en) 2006-02-09
DE69835909D1 (en) 2006-10-26
DE69829452D1 (en) 2005-04-28
DE69835909T2 (en) 2007-09-06

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