TWI685395B - Magnet chuck - Google Patents

Magnet chuck Download PDF

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Publication number
TWI685395B
TWI685395B TW104142071A TW104142071A TWI685395B TW I685395 B TWI685395 B TW I685395B TW 104142071 A TW104142071 A TW 104142071A TW 104142071 A TW104142071 A TW 104142071A TW I685395 B TWI685395 B TW I685395B
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workpiece
pole
magnetic
permanent magnets
piston
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TW104142071A
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Chinese (zh)
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TW201628762A (en
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矢島久志
佐佐木剛
神田浩一郎
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日商Smc股份有限公司
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  • Manipulator (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)

Abstract

A magnet chuck (10) includes, for example, four permanent magnets of a first permanent magnet (56a) through a fourth permanent magnet (56d), serving as an attracting and retaining member for attracting and retaining a workpiece (12). In the first permanent magnet (56a) and the third permanent magnet (56c), the magnetic polarity of a workpiece magnetic attracting surface facing the workpiece (12) is of an N-polarity. on the other hand, in the second permanent magnet (56b) and the fourth permanent magnet (56d), the magnetic polarity of a workpiece magnetic attracting surface is of an S-polarity. More specifically, in this case, combinations of the N-pole and the S-pole on the workpiece magnet attracting surface are formed in two pairs, and the N-pole and the S-pole, which are of different polarities, are adjacent to one another.

Description

磁力卡盤 Magnetic chuck

本發明係有關於一種用永久磁鐵之磁力吸引及固持工件的磁力卡盤。 The invention relates to a magnetic chuck for attracting and holding a workpiece with the magnetic force of a permanent magnet.

磁力卡盤包含電磁鐵或者是永久磁鐵中之一者。在電磁鐵的情形下,磁力的產生係藉由開始供給電流至電磁鐵(亦即,通電),以及工件用磁力吸引及固持。此外,在電流的供給停止時,磁力消失,結果,工件被釋放。 The magnetic chuck contains an electromagnet or one of permanent magnets. In the case of an electromagnet, the magnetic force is generated by starting to supply current to the electromagnet (ie, energized), and the workpiece is attracted and held by the magnetic force. In addition, when the current supply is stopped, the magnetic force disappears, and as a result, the workpiece is released.

另一方面,在永久磁鐵的情形下,例如,如日本早期專利公開案55-078505所揭示的,存在一種用於吸引及固持的配置以及藉由旋轉永久磁鐵的切換以釋放工件。不過,更一般而言,已知一種配置,其中永久磁鐵連接至活塞,以及永久磁鐵與活塞一起位移(例如,參考日本早期新型公開案51-102174)。揭示於日本早期新型公開案51-102174的磁力卡盤,與已經接受壓力流體的活塞一起位移後,使得永久磁鐵緊鄰工件,然後藉其吸引及固持工件。此外,當永久磁鐵及活塞在離開工件的方向位移時,工件被釋放。 On the other hand, in the case of permanent magnets, for example, as disclosed in Japanese Early Patent Publication 55-078505, there is a configuration for attracting and holding and switching to release the workpiece by rotating the permanent magnet. However, more generally, a configuration is known in which a permanent magnet is connected to a piston, and the permanent magnet is displaced together with the piston (for example, refer to Japanese Early New Publication 51-102174). The magnetic chuck disclosed in the Japanese early new publication 51-102174, after displacement with the piston that has received the pressure fluid, causes the permanent magnet to be close to the workpiece, and then uses it to attract and hold the workpiece. In addition, when the permanent magnet and piston are displaced in the direction away from the workpiece, the workpiece is released.

這種磁力卡盤,例如,設置於機器人的遠端手臂上,以及隨同機器人進行預定的操作,被吸引及固持的工件會運送到預定位置。 Such a magnetic chuck, for example, is installed on the remote arm of the robot, and along with the robot performing a predetermined operation, the workpiece attracted and held will be transported to a predetermined position.

當吸引有大重量的工件時,被認為,就永久磁鐵而言,應該選擇具有大磁力者。在此情形下,預期會產生大吸力。不過,特別是,在工件為薄板的情形下,由於在工件的內部中發生磁飽和,因此不容易產生大吸力。 When attracting a workpiece with a large weight, it is considered that, as far as the permanent magnet is concerned, the one with a large magnetic force should be selected. In this case, it is expected to generate a large suction force. However, in particular, in the case where the workpiece is a thin plate, since magnetic saturation occurs in the interior of the workpiece, it is not easy to generate a large suction force.

本發明的主要目標是要提供一種對於工件可表現大吸力的磁力卡盤。 The main object of the present invention is to provide a magnetic chuck that can express a large suction force to a workpiece.

根據本發明之一具體實施例,提供一種用面向工件之工件磁吸面藉由多個永久磁鐵之磁力來吸引及固持工件的磁力卡盤,該磁力卡盤包含收容於一缸管(cylinder tube)內的一活塞。該等多個永久磁鐵經組配成由於活塞接受來自一壓力流體的一壓制力的關係而位移時,以與該活塞之位移方向相同的方向位移,以及該等多個永久磁鐵經配置成以造成在工件磁吸面上存在一對或更多對的N極與S極的組合。 According to a specific embodiment of the present invention, a magnetic chuck for attracting and holding a workpiece by a magnetic attraction surface of the workpiece facing the workpiece by the magnetic force of a plurality of permanent magnets is provided. The magnetic chuck includes a cylinder tube (cylinder tube) ) Within a piston. The plurality of permanent magnets are configured to be displaced in the same direction as the displacement direction of the piston when the piston is displaced due to a pressing force from a pressure fluid, and the plurality of permanent magnets are configured to As a result, there is one or more pairs of N-pole and S-pole combinations on the magnetic attraction surface of the workpiece.

該永久磁鐵可為一個別磁鐵。更具體言之,根據本發明的另一具體實施例,提供一種用面向工件之工件磁吸面藉由一個永久磁鐵之磁力來吸引及固持工件的磁力卡盤,該磁力卡盤包含收容於一缸管內的一活塞。該永久磁鐵經組配成在活塞接受來自一壓力流體的一壓制力並且從而位移時,以與該活塞之位移方向相同的方向位 移,以及該永久磁鐵經組配成經磁化以造成在該工件磁吸面上存在一或更多對N極與S極的組合。 The permanent magnet may be a separate magnet. More specifically, according to another embodiment of the present invention, there is provided a magnetic chuck that attracts and holds a workpiece by the magnetic force of the workpiece facing the workpiece by the magnetic force of a permanent magnet. The magnetic chuck includes a housing A piston in the cylinder tube. The permanent magnet is configured to be in the same direction as the displacement direction of the piston when the piston receives a pressing force from a pressurized fluid and thereby displaces Shift, and the permanent magnet is assembled to be magnetized to cause one or more pairs of N and S poles to exist on the magnetic attraction surface of the workpiece.

在上述各個組態中,由在該工件磁吸面上之暴露N極產生的磁流(magnetic flux)指向在同一個工件磁吸面上的暴露S極。因此,相較於該工件磁吸面之磁極性為N極或者是S極中之一者的情形,亦即,相較於具有一極的先前技術磁力卡盤,可使工件內的磁路(磁流的數量)較大。更具體言之,關於磁飽和點出現於工件內部,儘管與先前技術相同,相較於先前技術,本發明可大幅增加通過工件的磁流。結果,對於該工件會表露大吸力。此一特徵在毗鄰地配置不同的磁極(N極與S極)時特別顯著。 In each of the above configurations, the magnetic flux generated by the exposed N pole on the magnetic attraction surface of the workpiece points to the exposed S pole on the magnetic attraction surface of the same workpiece. Therefore, compared to the case where the magnetic polarity of the magnetic attraction surface of the workpiece is one of N pole or S pole, that is, compared to the prior art magnetic chuck having one pole, the magnetic circuit in the workpiece can be made (The number of magnetic currents) is large. More specifically, regarding the magnetic saturation point appearing inside the workpiece, although the same as the prior art, compared with the prior art, the present invention can greatly increase the magnetic flux through the workpiece. As a result, a large suction force will be revealed for the workpiece. This feature is particularly noticeable when different magnetic poles (N pole and S pole) are arranged adjacently.

從上述方式使吸力更大的事實來看,即使在工件為薄壁構件(例如,薄鋼板)以及在其內部容易發生磁飽和的情形下,仍可有效地以磁力吸引及充分地固持該工件。換言之,在工件的厚度小時,本發明特別有效。 From the fact that the suction force is made larger in the above manner, even in the case where the workpiece is a thin-walled member (for example, a thin steel plate) and magnetic saturation is likely to occur inside it, it can still effectively attract and fully hold the workpiece with magnetic force . In other words, the present invention is particularly effective when the thickness of the workpiece is small.

由以上可明白,假設該等永久磁鐵的材料及特性與先前技術磁力卡盤的永久磁鐵一樣,當彼等的尺寸相同時,用本發明可增加對於該工件的吸力。另一方面,由於在吸力與先前技術永久磁鐵一樣的情形下,可做出尺寸較小的永久磁鐵,可按比例地縮小磁力卡盤(小型化)。 As can be understood from the above, assuming that the materials and characteristics of the permanent magnets are the same as those of the prior art magnetic chucks, when their sizes are the same, the present invention can increase the suction force to the workpiece. On the other hand, since the suction force is the same as that of the prior art permanent magnet, a permanent magnet with a smaller size can be made, and the magnetic chuck can be scaled down (miniaturized).

在使用多個個別永久磁鐵的情形下,因此永久磁鐵可採用磁化方向垂直於工件磁吸面的永久磁鐵。在此情形下,該等永久磁鐵在工件磁吸面(面向工件的表面)與背面上的磁極性不同。結果,利用多個個別永久磁 鐵,可在工件磁吸面上形成一或更多對的N極與S極。 In the case of using a plurality of individual permanent magnets, the permanent magnet may be a permanent magnet whose magnetization direction is perpendicular to the magnetic attraction surface of the workpiece. In this case, the magnetic polarities of the permanent magnets on the magnetic attraction surface of the workpiece (the surface facing the workpiece) and the back surface are different. As a result, multiple individual permanent magnets are used Iron can form one or more pairs of N pole and S pole on the magnetic attraction surface of the workpiece.

另外,用此組態,由工件磁吸面上之暴露N極產生的磁流指向工件磁吸面上的暴露S極與在工件磁吸面之背面上的暴露S極。更具體言之,可進一步增加磁路(磁流的數量)。可進一步增強與其耦合的吸力。 In addition, with this configuration, the magnetic current generated by the exposed N pole on the magnetic attraction surface of the workpiece is directed to the exposed S pole on the magnetic attraction surface of the workpiece and the exposed S pole on the back surface of the magnetic attraction surface of the workpiece. More specifically, the magnetic circuit (the number of magnetic currents) can be further increased. The suction force coupled with it can be further enhanced.

在上述組態中,如果N極與S極在工件磁吸面上各自駐留成為一極(換言之,N極與S極的組合為一對)是足夠的。不過,當N極與S極各自駐留成為兩極(換言之,N極與S極的組合為兩對)時,吸力變大,因此為較佳。 In the above configuration, it is sufficient if the N pole and the S pole reside on the magnetic attraction surface of the workpiece to become one pole (in other words, the combination of the N pole and the S pole is a pair). However, when the N pole and the S pole each reside as two poles (in other words, the combination of the N pole and the S pole is two pairs), the suction force becomes larger, which is preferable.

上述組態的永久磁鐵通過軛鐵可支撐於活塞上。在此情形下,由於存在該軛鐵,使得吸力更有力。結果,可更有效地吸引及固持工件。 The permanent magnet of the above configuration can be supported on the piston through the yoke. In this case, the presence of the yoke makes the suction more powerful. As a result, the workpiece can be attracted and held more effectively.

至於該等永久磁鐵,可使用設置成海爾貝克陣列(Halbach array)的至少三個個別永久磁鐵。更具體言之,形成該海爾貝克陣列的有:磁化方向垂直於工件磁吸面的兩個永久磁鐵,以及設在這兩個永久磁鐵之間且磁化方向平行於工件磁吸面的至少一永久磁鐵。另外,磁化方向垂直於工件磁吸面的兩個永久磁鐵中之一個的N極,以及這兩個永久磁鐵中之另一個的S極在工件磁吸面上可暴露。 As for the permanent magnets, at least three individual permanent magnets arranged in a Halbach array can be used. More specifically, the Halbach array is formed by: two permanent magnets whose magnetization direction is perpendicular to the magnetic attraction surface of the workpiece, and at least one permanent magnet disposed between the two permanent magnets and whose magnetization direction is parallel to the magnetic attraction surface of the workpiece magnet. In addition, the N pole of one of the two permanent magnets whose magnetization direction is perpendicular to the magnetic attraction surface of the workpiece, and the S pole of the other of the two permanent magnets can be exposed on the magnetic attraction surface of the workpiece.

該等多個永久磁鐵中之每一個可為U形磁鐵。在此一U形磁鐵中,兩個遠端中之一者為N極,以及兩個遠端中之另一者為S極。結果,藉由使各個U形磁鐵 的兩極面向工件,工件磁吸面上可暴露兩對或更多對的N極與S極。 Each of the plurality of permanent magnets may be a U-shaped magnet. In this U-shaped magnet, one of the two distal ends is the N pole, and the other of the two distal ends is the S pole. As a result, by making each U-shaped magnet The two poles face the workpiece, and two or more pairs of N and S poles can be exposed on the magnetic surface of the workpiece.

另一方面,在該等永久磁鐵的個數為單一個別磁鐵的情形下,則,例如,可使用被磁化成U形者作為該永久磁鐵。在此情形下,N極與S極兩者在工件磁吸面上暴露。可藉由使一U形磁鐵緊鄰一端面,以及進行其磁化以製造此一永久磁鐵。 On the other hand, in the case where the number of the permanent magnets is a single individual magnet, for example, a magnetized U-shaped magnet can be used as the permanent magnet. In this case, both the N pole and the S pole are exposed on the magnetic attraction surface of the workpiece. This permanent magnet can be manufactured by bringing a U-shaped magnet close to one end face and magnetizing it.

替換地,該永久磁鐵的磁化方向可垂直於工件磁吸面。更具體言之,N極與S極兩者在工件磁吸面上暴露,以及N極與S極兩者在其背面上也暴露。可藉由使一U形磁鐵緊鄰一端面,使另一U形磁鐵緊鄰其背面,以及進行其磁化以製造此一永久磁鐵。 Alternatively, the magnetization direction of the permanent magnet may be perpendicular to the magnetic attraction surface of the workpiece. More specifically, both the N pole and the S pole are exposed on the magnetic attraction surface of the workpiece, and both the N pole and the S pole are also exposed on the back surface thereof. This permanent magnet can be manufactured by bringing a U-shaped magnet close to one end face, another U-shaped magnet close to its back face, and magnetizing it.

在上述組態中,當永久磁鐵轉動時,在自動開關附近的磁流密度改變,結果,被認為有可能造成自動開關的錯誤操作。因此,在該缸管中,提供一防轉構件(rotation prevention member)用以防止該永久磁鐵旋轉為較佳。由於此特徵,可免除造成上述情形的擔心。 In the above configuration, when the permanent magnet rotates, the magnetic current density in the vicinity of the automatic switch changes, and as a result, it is considered that it may cause an erroneous operation of the automatic switch. Therefore, in the cylinder tube, it is preferable to provide a rotation prevention member to prevent the permanent magnet from rotating. Due to this feature, the fear of causing the above situation can be eliminated.

當提供該防轉構件時,該防轉構件最好由一鐵磁金屬製成,以及設置於在工件磁吸面上相鄰的N極、S極之界線。用此配置,使永久磁鐵旋轉者變成最困難,而不是設置該防轉構件於另一位置。 When the anti-rotation member is provided, the anti-rotation member is preferably made of a ferromagnetic metal, and is disposed on the boundary between the N pole and the S pole adjacent to the magnetic attraction surface of the workpiece. With this configuration, it becomes the most difficult for the permanent magnet rotator, instead of setting the anti-rotation member at another position.

該防轉構件最好為用於連接該缸管與一頭罩的一連接構件。在此情形下,由於用來組裝該磁力卡盤的連接構件用作該防轉構件,不需要使用除該連接構件以 外的獨立防轉構件。因此,由於避免部件數增加,有可能做出尺寸更緊湊的磁力卡盤。此一組態也有成本效益。 The anti-rotation member is preferably a connecting member for connecting the cylinder tube and a head cover. In this case, since the connecting member used to assemble the magnetic chuck is used as the anti-rotation member, it is not necessary to use External independent anti-rotation member. Therefore, by avoiding an increase in the number of parts, it is possible to make a magnetic chuck with a more compact size. This configuration is also cost-effective.

此外,最好設置一密封構件於該活塞的一側壁上,以及在該活塞與該缸管之間的一部位可用該密封構件密封。在此情形下,在該永久磁鐵前進或者是縮回的任一時候,該活塞接受來自該壓力流體的壓制力。該活塞在該永久磁鐵前進時的壓力接受面積(pressure receiving area)與該活塞在該永久磁鐵縮回時的壓力接受面積大致相等,以及因此,在前進及縮回期間的推力實質等效。結果,例如,可使在以磁力吸引該工件時以及在釋放該工件時的反應速度實質等效。 In addition, it is preferable to provide a sealing member on a side wall of the piston, and a portion between the piston and the cylinder tube can be sealed with the sealing member. In this case, at any time when the permanent magnet advances or retracts, the piston receives a pressing force from the pressure fluid. The pressure receiving area of the piston when the permanent magnet advances is approximately equal to the pressure receiving area of the piston when the permanent magnet is retracted, and therefore, the thrust during advancement and retraction is substantially equivalent. As a result, for example, the reaction speed when the workpiece is attracted by magnetic force and when the workpiece is released can be made substantially equivalent.

可裝設附接至該缸管而且覆蓋該永久磁鐵的一磁鐵罩,以及在該永久磁鐵吸引工件時進行緩衝作用的一緩衝構件可拆卸地裝在該磁鐵罩上。在此一組態,在永久磁鐵吸引工件時,使該緩衝構件接觸及介入該工件。結果,可減少作用於該磁力卡盤的應力。更具體言之,該緩衝構件進行緩衝作用。因此,可抑制磁力卡盤的振動。 A magnet cover that is attached to the cylinder tube and covers the permanent magnet, and a buffer member that buffers when the permanent magnet attracts the workpiece can be detachably mounted on the magnet cover. In this configuration, when the permanent magnet attracts the workpiece, the buffer member is brought into contact with and intervened in the workpiece. As a result, the stress acting on the magnetic chuck can be reduced. More specifically, the buffer member performs a buffer function. Therefore, the vibration of the magnetic chuck can be suppressed.

同時,該緩衝構件當作防滑裝置。更具體言之,在緩衝構件與被磁吸的工件之間發生磨擦阻力。因此,由於工件對於緩衝構件難以經歷滑動,故而可有效防止工件與磁力卡盤分離或脫落。 At the same time, the buffer member acts as a non-slip device. More specifically, friction resistance occurs between the buffer member and the magnetically attracted work. Therefore, since it is difficult for the workpiece to experience sliding against the buffer member, it is possible to effectively prevent the workpiece from separating or falling off from the magnetic chuck.

在此一組態中,最好裝設多個緩衝構件,以及該等緩衝構件由磁鐵罩突出的厚度彼此不同。在此情形下,藉由掉換緩衝構件可改變對於工件的吸力。緩衝構 件由磁鐵罩突出的區域介入工件。因此,由於緩衝構件由磁鐵罩突出的厚度變大,永久磁鐵與工件的距離也會增加。結果,由永久磁鐵作用於工件的磁力影響變成更難。 In this configuration, it is preferable to install a plurality of buffer members, and the thickness of the buffer members protruding from the magnet cover is different from each other. In this case, the suction force to the workpiece can be changed by replacing the buffer member. Buffer structure The area where the piece is protruded by the magnet cover intervenes in the workpiece. Therefore, as the thickness of the buffer member protruding from the magnet cover becomes larger, the distance between the permanent magnet and the workpiece also increases. As a result, the influence of the magnetic force acting on the workpiece by the permanent magnet becomes more difficult.

由以下結合附圖的說明可更加明白本發明以上及其他的目標、特徵及優點,其中用釋例展示本發明的較佳具體實施例。 The above and other objects, features, and advantages of the present invention can be more clearly understood from the following description in conjunction with the accompanying drawings, in which preferred specific embodiments of the present invention are shown with explanatory examples.

10‧‧‧磁力卡盤 10‧‧‧Magnetic chuck

12‧‧‧工件 12‧‧‧Workpiece

14‧‧‧缸管 14‧‧‧Cylinder tube

16‧‧‧磁鐵罩 16‧‧‧Magnet cover

18‧‧‧頭罩 18‧‧‧hood

20‧‧‧殼體 20‧‧‧Housing

22‧‧‧第一滑行孔 22‧‧‧ First glide hole

23‧‧‧下腔室 23‧‧‧Lower chamber

24‧‧‧第一中間腔室 24‧‧‧First middle chamber

25‧‧‧中空筒狀柱 25‧‧‧Hollow cylindrical column

26、112、118、120‧‧‧第一環形溝槽 26, 112, 118, 120 ‧‧‧ First annular groove

28、28A至28C、110、114、116、122‧‧‧緩衝構件 28, 28A to 28C, 110, 114, 116, 122

29a、29c、66‧‧‧凸緣 29a, 29c, 66‧‧‧ flange

29b、29bA至29bC‧‧‧筒狀部 29b, 29bA to 29bC

37‧‧‧第一端口 37‧‧‧ First port

38‧‧‧第二滑行孔 38‧‧‧Second sliding hole

40‧‧‧薄壁部份 40‧‧‧Thin-walled part

42‧‧‧板件 42‧‧‧Plate

50‧‧‧第二端口 50‧‧‧Second port

54a至54d‧‧‧防轉構件 54a to 54d

54a‧‧‧第一繫桿 54a‧‧‧First tie bar

54b‧‧‧第二繫桿 54b‧‧‧second tie bar

54c‧‧‧第三繫桿 54c‧‧‧third tie rod

54d‧‧‧第四繫桿 54d‧‧‧4th tie bar

56a‧‧‧第一永久磁鐵 56a‧‧‧First permanent magnet

56b‧‧‧第二永久磁鐵 56b‧‧‧Second Permanent Magnet

56c‧‧‧第三永久磁鐵 56c‧‧‧third permanent magnet

56d‧‧‧第四永久磁鐵 56d‧‧‧The fourth permanent magnet

58‧‧‧活塞 58‧‧‧piston

60‧‧‧第二中間腔室 60‧‧‧Second middle chamber

62‧‧‧上腔室 62‧‧‧ Upper chamber

64‧‧‧軛鐵 64‧‧‧Yoke

68‧‧‧軸桿 68‧‧‧shaft

74‧‧‧連接螺栓 74‧‧‧Connecting bolt

78‧‧‧***孔 78‧‧‧Insert hole

84‧‧‧第一減震器 84‧‧‧ First shock absorber

85‧‧‧連通溝槽 85‧‧‧Connecting groove

90‧‧‧第三密封構件 90‧‧‧The third sealing member

94‧‧‧第二減震器 94‧‧‧Second shock absorber

第1圖為本發明之一具體實施例之磁力卡盤的主要組件的概括透視圖;第2圖為從第1圖中之箭頭A方向看到的平面圖;第3圖為第2圖之沿著直線III-III繪出的剖面圖;第4圖的概括垂直剖面圖圖示在活塞、軛鐵及第一至第四永久磁鐵由圖示於第3圖之狀態向下位移時的情況;第5A圖及第5B圖分別為在工件磁吸面上之極數為一時之磁流的示意側面圖以及圖示磁飽和區域的示意平面圖;第6A圖及第6B圖分別為在工件磁吸面上之極數為二(N極與S極組合成一對)時之磁流的示意側面圖以及圖示磁飽和區域的示意平面圖;第7圖為圖示在工件磁吸面上之極數為四(N極與S極組合成兩對)時之磁飽和區域的示意側面圖;第8圖的曲線圖圖示在工件磁吸面上之磁極數(N極與S極的組合數)與產生吸力的關係; 第9A圖至第9C圖為主要組件的剖面圖,其係圖示附接有從磁鐵罩突出之不同數量的緩衝構件的情況;第10圖的曲線圖圖示在附接圖示於第9A圖至第9C圖的緩衝構件時對於工件的吸力變化;第11圖的概括透視圖圖示工件磁吸面由三個U形永久磁鐵之總成形成的情況;第12圖的概括仰視圖圖示工件磁吸面由兩個U形永久磁鐵之總成形成的情況;第13圖的概括正面圖圖示用數個桿形磁鐵形成海爾貝克陣列的情況,以及在工件磁吸面上設置一組N極與S極的組合;第14圖的概括整體透視圖圖示藉由磁化圓柱體得到的永久磁鐵,使得在其中的磁極方向呈U形;第15圖的概括整體透視圖圖示藉由磁化圓柱體得到的永久磁鐵,使得在其中的磁極方向與工件磁吸面垂直;第16圖的主要組件概括剖面圖圖示附接一形狀不同之緩衝構件;第17圖的主要組件概括剖面圖圖示附接另一形狀不同之緩衝構件;第18圖的主要組件概括剖面圖圖示附接又一形狀不同之緩衝構件;以及第19圖的主要組件概括剖面圖圖示附接更一形狀不同之緩衝構件。 Figure 1 is a schematic perspective view of main components of a magnetic chuck according to an embodiment of the present invention; Figure 2 is a plan view seen from the direction of arrow A in Figure 1; Figure 3 is along the edge of Figure 2 The cross-sectional view drawn along line III-III; the general vertical cross-sectional view of FIG. 4 shows the situation when the piston, yoke, and first to fourth permanent magnets are displaced downward from the state shown in FIG. 3; Figures 5A and 5B are respectively a schematic side view of the magnetic flux when the number of poles on the magnetic attraction surface of the workpiece is one and a schematic plan view showing the magnetic saturation region; Figures 6A and 6B are respectively magnetic attraction on the workpiece The schematic side view of the magnetic current when the number of poles on the surface is two (the N pole and the S pole are combined into a pair) and the schematic plan view showing the magnetic saturation region; Figure 7 is the number of poles shown on the magnetic attraction surface of the workpiece Is a schematic side view of the magnetic saturation region when four (N pole and S pole are combined into two pairs); the graph in Figure 8 shows the number of magnetic poles (the number of N pole and S pole combined) on the magnetic attraction surface of the workpiece Relationship with generating suction; FIGS. 9A to 9C are cross-sectional views of the main components, which illustrate the case where different numbers of buffer members protruding from the magnet cover are attached; the graph of FIG. 10 is shown in the attached diagram at 9A Change of suction force to the workpiece when the cushioning member from FIG. 9C to FIG. 9; the general perspective view of FIG. 11 illustrates the case where the magnetic attraction surface of the workpiece is formed by the assembly of three U-shaped permanent magnets; the general bottom view of FIG. 12 Shows the case where the magnetic attraction surface of the workpiece is formed by the assembly of two U-shaped permanent magnets; the summary front view of Figure 13 shows the formation of the Haierbeck array with several rod-shaped magnets, and a Group N pole and S pole combination; the general overall perspective view of Figure 14 shows a permanent magnet obtained by magnetizing a cylinder so that the direction of the magnetic pole in it is U-shaped; the general overall perspective view of Figure 15 is shown by The permanent magnet obtained from the magnetized cylinder is such that the direction of the magnetic pole in it is perpendicular to the magnetic attraction surface of the workpiece; the general cross-sectional view of the main components in Figure 16 shows the attachment of a buffer member with a different shape; the general cross-section of the main components in Figure 17 The figure shows the attachment of another buffer member with a different shape; the general sectional view of the main components of FIG. 18 shows the attachment of yet another buffer member with a different shape; and the general sectional view of the main components of FIG. 19 shows the attachment of a more Buffer members with different shapes.

以下參考附圖詳述本發明磁力卡盤的較佳具體實施例。在以下說明中,用語“向上”及“向下”對應至第1圖、第3圖及第4圖的向上及向下方向。此外,在本具體實施例中,舉例說明壓縮空氣用來作為工作流體的情形。 The following is a detailed description of preferred embodiments of the magnetic chuck of the present invention with reference to the drawings. In the following description, the terms "upward" and "downward" correspond to the upward and downward directions of Figures 1, 3, and 4. In addition, in this specific embodiment, a case where compressed air is used as a working fluid is exemplified.

第1圖至第3圖分別為根據本發明之一具體實施例圖示磁力卡盤10之主要組件的概括透視圖,從第1圖中之箭頭A方向看到的平面圖,以及沿著第2圖之直線III-III繪出的剖面圖。磁力卡盤10吸引及固持圖示於第3圖的工件12。當然,工件12由鐵磁材料構成,以及可舉例薄鋼板作為它的詳細實施例。工件12的厚度T1約為0.5至2毫米,以及通常約為0.6毫米。 FIGS. 1 to 3 are respectively a schematic perspective view illustrating the main components of the magnetic chuck 10 according to an embodiment of the present invention, a plan view seen from the direction of arrow A in FIG. 1, and along the second The cross-sectional view drawn by line III-III in the figure. The magnetic chuck 10 attracts and holds the workpiece 12 shown in FIG. 3. Of course, the work piece 12 is composed of a ferromagnetic material, and a thin steel plate can be exemplified as its detailed embodiment. The thickness T1 of the workpiece 12 is about 0.5 to 2 mm, and usually about 0.6 mm.

磁力卡盤10包含藉由使磁鐵罩16及頭罩18附接至缸管14來構成的殼體20。以下,主要參考第3圖,起初,磁鐵罩16由一中空體製成,其中第一滑行孔22經形成可沿著彼之縱向延伸。在第一滑行孔22中,下腔室23與第一中間腔室24由後述軛鐵64的凸緣66(固持構件)和板件42(分隔構件)界定。更具體言之,下腔室23為在磁鐵罩16的底壁與凸緣66的下端面之間的空間。此外,第一中間腔室24為在凸緣66的上端面與板件42的下端面之間的空間。 The magnetic chuck 10 includes a housing 20 configured by attaching the magnet cover 16 and the head cover 18 to the cylinder tube 14. Hereinafter, referring mainly to FIG. 3, initially, the magnet cover 16 is made of a hollow body in which the first glide hole 22 is formed to extend in the longitudinal direction of each other. In the first glide hole 22, the lower chamber 23 and the first intermediate chamber 24 are defined by a flange 66 (holding member) and a plate 42 (partition member) of the yoke 64 described later. More specifically, the lower chamber 23 is a space between the bottom wall of the magnet cover 16 and the lower end surface of the flange 66. In addition, the first intermediate chamber 24 is a space between the upper end surface of the flange 66 and the lower end surface of the plate 42.

形成突出磁鐵罩16之下端面的中空筒狀柱25,以及在中空筒狀柱25中形成圍繞第一滑行孔22(下腔室23)的第一環形溝槽26。在第一環形溝槽26中,構造一 緩衝構件28,以及插上它的凸緣29a,其直徑稍微大些,而且在徑向向外方向突出。在凸緣29a已收容於第一環形溝槽26中後,藉由它的彈性作用回到它的原始形狀,防止凸緣29a由第一環形溝槽26掉出來。結果,防止緩衝構件28從磁鐵罩16脫落。 A hollow cylindrical column 25 protruding from the lower end surface of the magnet cover 16 is formed, and a first annular groove 26 surrounding the first glide hole 22 (lower chamber 23) is formed in the hollow cylindrical column 25. In the first annular groove 26, construct one The buffer member 28, and the flange 29a into which it is inserted, have a slightly larger diameter and protrude radially outward. After the flange 29a has been received in the first annular groove 26, it returns to its original shape by its elasticity, preventing the flange 29a from falling out of the first annular groove 26. As a result, the cushion member 28 is prevented from falling off from the magnet cover 16.

藉由使緩衝構件28彈性變形,凸緣29a可輕易插進第一環形溝槽26及與其分離。換言之,緩衝構件28是以對於磁鐵罩16可拆卸地安裝。 By elastically deforming the buffer member 28, the flange 29a can be easily inserted into and separated from the first annular groove 26. In other words, the buffer member 28 is detachably attached to the magnet cover 16.

緩衝構件28中直徑小於凸緣29a的筒狀部29b係覆蓋中空筒狀柱25。此外,筒狀部29b的一端由中空筒狀柱25(磁鐵罩16)突出成環形。此外,在緩衝構件28中形成多個個別狹縫29(參考第2圖)。 The cylindrical portion 29b of the buffer member 28 having a smaller diameter than the flange 29a covers the hollow cylindrical column 25. In addition, one end of the cylindrical portion 29b is projected into a ring shape by the hollow cylindrical column 25 (magnet cover 16). In addition, a plurality of individual slits 29 are formed in the buffer member 28 (refer to FIG. 2).

用前述方式構成的緩衝構件28最好由一合適耐油材料(oil resistant material)製成。作為此一較佳材料的實施例,可列舉氟橡膠、矽橡膠、氯丁橡膠、丁腈橡膠、丙烯酸橡膠或其類似者。緩衝構件28的材料也可為樹脂。 The buffer member 28 constructed in the foregoing manner is preferably made of a suitable oil resistant material. As an example of this preferred material, fluororubber, silicone rubber, neoprene rubber, nitrile rubber, acrylic rubber, or the like can be cited. The material of the buffer member 28 may be resin.

最好製備多個緩衝構件28。在此情形下,至於該等多個個別緩衝構件28,可選擇筒狀部29b從中空筒狀柱25突出之數量D彼此不同者。這在下文會更詳細地討論。 Preferably, a plurality of buffer members 28 are prepared. In this case, as for the plurality of individual buffer members 28, the number D of the cylindrical portions 29b protruding from the hollow cylindrical column 25 may be selected to be different from each other. This will be discussed in more detail below.

磁鐵罩16之中間側翼部(middle flank portion)30(參考第3圖)的形狀實質做成長方體的形式,以及彼之上端部32的經形成為實質圓柱形。基於這些不同的形狀,由磁鐵罩16上的中間側翼部30與上端部32形成階 梯部份(stepped part)34。第一密封構件36設置於上端部32的一側壁上。 The shape of the middle flank portion 30 (refer to FIG. 3) of the magnet cover 16 is substantially in the form of a rectangular parallelepiped, and the upper end portion 32 is formed into a substantially cylindrical shape. Based on these different shapes, the middle side wing portion 30 and the upper end portion 32 on the magnet cover 16 form a step Stepped part 34. The first sealing member 36 is disposed on a side wall of the upper end 32.

此外,在中間側翼部30的一側面中形成第一端口37。第一端口37與下腔室23連通。 In addition, a first port 37 is formed in one side of the middle side wing portion 30. The first port 37 communicates with the lower chamber 23.

在缸管14中形成沿著其縱向延伸的第二滑行孔38。垂直於縱向的第二滑行孔38的橫截面為實質完美的圓形。此外,第二滑行孔38開口在缸管14的上端及下端。更具體言之,缸管14為外部形狀做成實質長方體形式的中空體。 A second glide hole 38 extending in the longitudinal direction of the cylinder tube 14 is formed. The cross section of the second sliding hole 38 perpendicular to the longitudinal direction is a substantially perfect circle. In addition, the second glide hole 38 opens at the upper and lower ends of the cylinder tube 14. More specifically, the cylinder tube 14 is a hollow body whose outer shape is formed into a substantially rectangular parallelepiped.

在第二滑行孔38的下端側開口附近形成薄壁部份40係藉由使其內壁向外壁側凹進。以此方式設定比其他區域小的薄壁部份40厚度。薄壁部份40的下端面抵接磁鐵罩16的階梯部份34。此外,磁鐵罩16的上端部32***穿過第二滑行孔38而且一併套入薄壁部份40。在薄壁部份40與磁鐵罩16上端部32之間的部位用第一密封構件36密封。 The thin-walled portion 40 is formed near the opening of the lower end side of the second glide hole 38 by recessing its inner wall toward the outer wall side. In this way, the thickness of the thin-walled portion 40 that is smaller than the other areas is set. The lower end surface of the thin-walled portion 40 abuts the stepped portion 34 of the magnet cover 16. In addition, the upper end portion 32 of the magnet cover 16 is inserted through the second sliding hole 38 and fits into the thin-walled portion 40 together. The portion between the thin portion 40 and the upper end 32 of the magnet cover 16 is sealed by the first sealing member 36.

板件42的外緣夾在磁鐵罩16的上端面與薄壁部份40的頂蓬面之間。換言之,板件42被磁鐵罩16與缸管14夾住。以下會描述關於板件42的細節。 The outer edge of the plate 42 is sandwiched between the upper end surface of the magnet cover 16 and the ceiling surface of the thin-walled portion 40. In other words, the plate 42 is sandwiched between the magnet cover 16 and the cylinder tube 14. The details about the board 42 will be described below.

在缸管14上端面上的開口用頭罩18封閉。形狀以實質管狀柱之方式做成的進入構件(entry member)44經形成可突出頭罩18的下端面。藉由使進入構件44進入缸管14內部,頭罩18可套入缸管14。第二密封構件46設置於進入構件44的一側壁上,藉此用第二密封構件46 密封在缸管14與頭罩18之間的一部位。 The opening on the upper end surface of the cylinder tube 14 is closed with a head cover 18. An entry member 44 shaped as a substantially tubular column is formed to protrude from the lower end surface of the head cover 18. By allowing the entry member 44 to enter the inside of the cylinder tube 14, the head cover 18 can be fitted into the cylinder tube 14. The second sealing member 46 is provided on a side wall of the entry member 44, whereby the second sealing member 46 It is sealed at a portion between the cylinder tube 14 and the head cover 18.

在頭罩18的一側面中形成第二端口50。第二端口50位在有第一端口37形成於其上的同一個側面上。未圖示的進氣排氣機構(supply and exhaust mechanism)連接至第一端口37及第二端口50。 A second port 50 is formed in one side of the head cover 18. The second port 50 is located on the same side on which the first port 37 is formed. A supply and exhaust mechanism (not shown) is connected to the first port 37 and the second port 50.

在殼體20的四個角落中各自形成從頭罩18延伸通過缸管14以及到達磁鐵罩16之中間側翼部30下端附近的有底桿孔(bottomed rod hole)52。通過各桿孔52***的第一至第四繫桿54a至54d(連接構件)的螺紋部與刻在桿孔52底部附近的螺紋部份以螺紋嚙合(screw-engaged)。此外,它的頭部在設置於頭罩18中的環形階梯部份55中停止。伴隨第一至第四繫桿54a至54d的螺紋嚙合,頭罩18、缸管14及磁鐵罩16扣緊在一起和連接,從而形成殼體20。 Bottomed rod holes 52 extending from the head cover 18 through the cylinder tube 14 and near the lower end of the middle-side wing portion 30 of the magnet cover 16 are formed in each of the four corners of the housing 20. The threaded portions of the first to fourth tie rods 54a to 54d (connecting members) inserted through the rod holes 52 are screw-engaged with the threaded portions engraved near the bottom of the rod hole 52. In addition, its head stops in an annular stepped portion 55 provided in the hood 18. With the threaded engagement of the first to fourth tie rods 54a to 54d, the head cover 18, the cylinder tube 14, and the magnet cover 16 are fastened together and connected, thereby forming the housing 20.

在上述結構中,頭罩18、缸管14及磁鐵罩16,例如,由順磁金屬構成,例如鋁合金或其類似者。另一方面,第一至第四繫桿54a至54d由鐵磁金屬構成,例如鑄鐵(例如,對應至受日本工業標準制約之SS400的材料),以及如下文所述,作為防轉構件,亦即,所謂的旋轉制動器(rotation stop),防止用作吸引及固持構件的第一至第四永久磁鐵56a至56d旋轉。 In the above structure, the head cover 18, the cylinder tube 14, and the magnet cover 16, for example, are made of paramagnetic metal, such as aluminum alloy or the like. On the other hand, the first to fourth tie bars 54a to 54d are made of ferromagnetic metal, such as cast iron (for example, corresponding to the material of SS400 subject to Japanese industrial standards), and as described below, as anti-rotation members, That is, a so-called rotation stop prevents rotation of the first to fourth permanent magnets 56a to 56d used as suction and holding members.

在殼體20的內部中,第一滑行孔22與第二滑行孔38用板件42分隔。此外,第二滑行孔38被活塞58及頭罩18分隔成第二中間腔室60與上腔室62。 In the interior of the housing 20, the first glide hole 22 and the second glide hole 38 are separated by a plate 42. In addition, the second glide hole 38 is divided into a second intermediate chamber 60 and an upper chamber 62 by the piston 58 and the head cover 18.

另一方面,上腔室62形成於活塞58與頭罩 18的進入構件44之間。第二端口50與上腔室62連通。 On the other hand, the upper chamber 62 is formed on the piston 58 and the head cover 18 between the entry members 44. The second port 50 communicates with the upper chamber 62.

磁力卡盤10包含第一至第四永久磁鐵56a至56d用於吸引及固持工件12(參考第3圖)。第一至第四永久磁鐵56a至56d中之每一者保持在軛鐵64中係通過自己的磁力底通過連接構件,例如固持螺栓(retaining bolt)或其類似者。 The magnetic chuck 10 includes first to fourth permanent magnets 56a to 56d for attracting and holding the workpiece 12 (refer to FIG. 3). Each of the first to fourth permanent magnets 56a to 56d is held in the yoke 64 by its own magnetic force through a connecting member, such as a retaining bolt or the like.

如第2圖所示,第一至第四永久磁鐵56a至56d,各自為實質扇形,以平面圖觀看其中心角實質有90°。藉由此一柱體的圓形配置,大致構成有管狀柱形的永久磁鐵。更具體言之,第一永久磁鐵56a接觸第二永久磁鐵56b且鄰接第一永久磁鐵56a的第四永久磁鐵56d接觸面向第三永久磁鐵56c地設置。 As shown in FIG. 2, the first to fourth permanent magnets 56a to 56d are each substantially fan-shaped, and the center angle is substantially 90° when viewed in plan. Due to the circular configuration of this cylinder, a tubular cylindrical permanent magnet is roughly constructed. More specifically, the first permanent magnet 56a contacts the second permanent magnet 56b and the fourth permanent magnet 56d adjacent to the first permanent magnet 56a contacts and faces the third permanent magnet 56c.

例如,第一至第四永久磁鐵56a至56d的半徑值可設定為約10至30毫米。該半徑的典型實施例大約為15毫米,以及在此情形下,該等永久磁鐵的直徑整體上大約為30毫米。 For example, the radius values of the first to fourth permanent magnets 56a to 56d may be set to about 10 to 30 mm. A typical embodiment of the radius is about 15 mm, and in this case, the diameter of the permanent magnets is about 30 mm as a whole.

此外,第一至第四永久磁鐵56a至56d之高度(由下端面至上端面的距離)的典型實施例大約為10毫米。 In addition, a typical embodiment of the height (distance from the lower end surface to the upper end surface) of the first to fourth permanent magnets 56a to 56d is about 10 mm.

為了便於了解,第2圖省略磁鐵罩16的底壁部份。不過,實際上,第一至第四永久磁鐵56a至56d都被磁鐵罩16的底壁部份覆蓋(參考第3圖)。 For ease of understanding, the bottom wall portion of the magnet cover 16 is omitted in FIG. 2. However, actually, the first to fourth permanent magnets 56a to 56d are partially covered by the bottom wall of the magnet cover 16 (refer to FIG. 3).

當第一至第四永久磁鐵56a至56d一致地與軛鐵64及活塞58一起位移向工件12接近時,吸住圖示於 第3圖的工件12。更具體言之,在第一至第四永久磁鐵56a至56d中,它們面向工件12的表面用來作為工件磁吸面(吸引及固持面)。 When the first to fourth permanent magnets 56a to 56d are uniformly displaced together with the yoke 64 and the piston 58 toward the workpiece 12, the drawing is attracted to Figure 3 Workpiece 12. More specifically, in the first to fourth permanent magnets 56a to 56d, their surfaces facing the workpiece 12 are used as magnetic attraction surfaces (attracting and holding surfaces) of the workpiece.

第一永久磁鐵56a與第三永久磁鐵56c兩者之工件磁吸面的磁極性為N極性。對比之下,第二永久磁鐵56b與第四永久磁鐵56d兩者之工件磁吸面的磁極性為S極性。結果,該等工件磁吸面的極性沿著順時鐘方向形成N極(第一永久磁鐵56a),S極(第二永久磁鐵56b),N極(第三永久磁鐵56c),以及S極(第四永久磁鐵56d)。更具體言之,在此情形下,在該工件磁吸面上形成兩對的N極、S極組合,以及面向它的磁極經暴露成不同極性的N極與S極可彼此相鄰。 The magnetic polarity of the magnetic attraction surface of the workpiece of both the first permanent magnet 56a and the third permanent magnet 56c is N polarity. In contrast, the magnetic polarity of the magnetic attraction surface of the workpiece of both the second permanent magnet 56b and the fourth permanent magnet 56d is S polarity. As a result, the polarities of the magnetic attraction surfaces of the workpieces form the N pole (first permanent magnet 56a), S pole (second permanent magnet 56b), N pole (third permanent magnet 56c), and S pole ( The fourth permanent magnet 56d). More specifically, in this case, two pairs of N-pole and S-pole combinations are formed on the magnetic attraction surface of the workpiece, and the N-pole and S-pole facing the magnetic pole exposed to them with different polarities may be adjacent to each other.

在被軛鐵64固持的受固持表面的一邊上,與上述相反,沿著順時鐘方向,是彼此並排順序地排成S極(第一永久磁鐵56a),N極(第二永久磁鐵56b),S極(第三永久磁鐵56c),以及N極(第四永久磁鐵56d)。 On the side of the holding surface held by the yoke 64, opposite to the above, along the clockwise direction, they are sequentially arranged side by side into S pole (first permanent magnet 56a), N pole (second permanent magnet 56b) , S pole (third permanent magnet 56c), and N pole (fourth permanent magnet 56d).

第一繫桿54a位於第一永久磁鐵56a與第二永久磁鐵56b之界線的外周邊上,或換言之,位於在工件磁吸面上的N極(第一永久磁鐵56a)與S極(第二永久磁鐵56b)之界線的外周邊上。同樣地,第二繫桿54b、第三繫桿54c及第四繫桿54d各自位於第二永久磁鐵56b與第三永久磁鐵56c之界線的外周邊上,位於第三永久磁鐵56c與第四永久磁鐵56d之界線的外周邊上,以及位於第四永久磁鐵56d與第一永久磁鐵56a之界線的外周邊上。最後,將 第一至第四繫桿54a至54d設置於在工件磁吸面上之毗鄰磁極的界線。 The first tie bar 54a is located on the outer periphery of the boundary between the first permanent magnet 56a and the second permanent magnet 56b, or in other words, on the N pole (first permanent magnet 56a) and S pole (second On the outer periphery of the boundary of the permanent magnet 56b). Similarly, the second tie bar 54b, the third tie bar 54c, and the fourth tie bar 54d are each located on the outer periphery of the boundary between the second permanent magnet 56b and the third permanent magnet 56c, and are located on the third permanent magnet 56c and the fourth permanent magnet The outer periphery of the boundary between the magnet 56d and the outer periphery of the boundary between the fourth permanent magnet 56d and the first permanent magnet 56a. Finally, The first to fourth tie rods 54a to 54d are disposed on the boundary between adjacent magnetic poles on the magnetic attraction surface of the workpiece.

由於第一至第四繫桿54a至54d由鐵磁金屬製成,源於第一至第四永久磁鐵56a至56d的磁力也施加於第一至第四繫桿54a至54d上。更具體言之,在第一至第四永久磁鐵56a至56d與第一至第四繫桿54a至54d之間產生吸力。 Since the first to fourth tie bars 54a to 54d are made of ferromagnetic metal, the magnetic force from the first to fourth permanent magnets 56a to 56d is also exerted on the first to fourth tie bars 54a to 54d. More specifically, suction force is generated between the first to fourth permanent magnets 56a to 56d and the first to fourth tie bars 54a to 54d.

如上述,由於在第一至第四永久磁鐵56a至56d與第一至第四繫桿54a至54之間出現互相吸力,因此可防止第一至第四永久磁鐵56a至56d旋轉。最後,第一至第四永久磁鐵56a至56d用來阻止活塞58及軛鐵64旋轉。以此方式,用用來形成殼體20的第一至第四繫桿54a至54d可使第一至第四永久磁鐵56a至56d的旋轉扭矩實質為零。 As described above, since mutual attraction occurs between the first to fourth permanent magnets 56a to 56d and the first to fourth tie bars 54a to 54, the first to fourth permanent magnets 56a to 56d can be prevented from rotating. Finally, the first to fourth permanent magnets 56a to 56d are used to prevent the piston 58 and the yoke 64 from rotating. In this way, the rotation torque of the first to fourth permanent magnets 56a to 56d can be substantially zero with the first to fourth tie bars 54a to 54d used to form the housing 20.

當如上述安置第一至第四繫桿54a至54d時,在第一至第四永久磁鐵56a至56d中產生的旋轉扭矩會減少到最小。換言之,可更有效地進行阻止旋轉。 When the first to fourth tie bars 54a to 54d are placed as described above, the rotational torque generated in the first to fourth permanent magnets 56a to 56d is reduced to a minimum. In other words, rotation prevention can be performed more effectively.

如上述,第一至第四永久磁鐵56a至56d均固持於軛鐵64(參考第3圖)中。更具體言之,軛鐵64包含大直徑凸緣66與小直徑軸桿68。第一至第四永久磁鐵56a至56d均用本身的磁力或用連接構件(例如,螺栓或其類似者)固持於凸緣66上。凸緣66與軸桿68在軛鐵64中(由相同的構件)一體成形。再者,由於軛鐵64由鐵磁金屬形成,例如鑄鐵(對應至SS400的材料),第一至第四永久磁 鐵56a至56d變成有可能被磁吸至凸緣66。 As described above, the first to fourth permanent magnets 56a to 56d are held by the yoke 64 (refer to FIG. 3). More specifically, the yoke 64 includes a large-diameter flange 66 and a small-diameter shaft 68. Each of the first to fourth permanent magnets 56a to 56d is held on the flange 66 by its own magnetic force or by a connecting member (for example, a bolt or the like). The flange 66 and the shaft 68 are integrally formed in the yoke 64 (by the same member). Furthermore, since the yoke 64 is formed of ferromagnetic metal, such as cast iron (corresponding to the material of SS400), the first to fourth permanent magnets The irons 56a to 56d become likely to be magnetically attracted to the flange 66.

例如,設定凸緣66大約有10毫米的厚度。凸緣66用作輔助軛鐵。此外,在凸緣66的一側壁上設置耐磨環(wear ring)70。藉由耐磨環70的作用,可避免發生凸緣66中心相對於第一滑行孔22中心的偏移或滑動,以及藉由加長軛鐵64,引導凸緣66沿著第一滑行孔22的內部。 For example, the flange 66 is set to have a thickness of approximately 10 mm. The flange 66 serves as an auxiliary yoke. In addition, a wear ring 70 is provided on one side wall of the flange 66. By the action of the wear ring 70, the center of the flange 66 can be prevented from shifting or sliding relative to the center of the first glide hole 22, and by extending the yoke 64, the flange 66 can be guided along the first glide hole 22 internal.

另一方面,在凸緣66的上端面上形成往下端面側凹陷的環形凹部72。此外,用於使連接螺栓74螺紋嚙合於其中的螺栓孔76形成軸桿68的上端上。 On the other hand, an annular recess 72 recessed toward the lower end surface side is formed on the upper end surface of the flange 66. In addition, a bolt hole 76 for screwing the connecting bolt 74 therein is formed on the upper end of the shaft 68.

板件42配置於活塞58以及第一至第四永久磁鐵56a至56d(軛鐵64的凸緣66)之間。為此目的,形成實質穿透板件42中心的***孔78,以便允許軛鐵64的軸桿68穿過它。當然,***孔78的內徑小於活塞58的外徑。 The plate member 42 is disposed between the piston 58 and the first to fourth permanent magnets 56a to 56d (the flange 66 of the yoke 64). For this purpose, an insertion hole 78 that substantially penetrates the center of the plate 42 is formed so as to allow the shaft 68 of the yoke 64 to pass therethrough. Of course, the inner diameter of the insertion hole 78 is smaller than the outer diameter of the piston 58.

此外,在板件42的下端面上,形成朝凸緣66突出的盤形突出物80。當活塞58、軛鐵64及第一至第四永久磁鐵56a至56d位於為一位移端點的上止點(top dead center point)(參考第3圖)時,盤形突出物80進入形成於軛鐵64之凸緣66中的環形凹部72。 In addition, on the lower end surface of the plate member 42, a disc-shaped protrusion 80 protruding toward the flange 66 is formed. When the piston 58, the yoke 64, and the first to fourth permanent magnets 56a to 56d are located at a top dead center point (refer to FIG. 3) that is a displacement end point, the disc-shaped protrusion 80 enters and forms An annular recess 72 in the flange 66 of the yoke 64.

在板件42的上端面中形成寬廣的第二環形溝槽82。環狀第一減震器84容納於第二環形溝槽82中。活塞58的下端面在到達為另一位移端點的下止點(bottom dead center point)時抵接第一減震器84(參考第4圖)。 A wide second annular groove 82 is formed in the upper end surface of the plate 42. The ring-shaped first shock absorber 84 is accommodated in the second ring-shaped groove 82. The lower end surface of the piston 58 abuts the first shock absorber 84 when it reaches the bottom dead center point which is another displacement end point (refer to FIG. 4).

此外,在板件42上於***孔78附近形成連 通溝槽85用於致能第一中間腔室24與第二中間腔室60的連通。藉由連通溝槽85,第一中間腔室24內的壓縮空氣有可能移動進入第二中間腔室60,或第二中間腔室60內的壓縮空氣有可能移動進入第一中間腔室24。 In addition, a connection is formed on the plate 42 near the insertion hole 78 The through groove 85 is used to enable communication between the first intermediate chamber 24 and the second intermediate chamber 60. Through the communication groove 85, the compressed air in the first intermediate chamber 24 may move into the second intermediate chamber 60, or the compressed air in the second intermediate chamber 60 may move into the first intermediate chamber 24.

已插穿板件42***孔78的軸桿68的上端面插進形成於活塞58下端面中的***孔86。在活塞58中形成從彼之上端面側到***孔86的螺栓制動孔(bolt stopping hole)88,以及在螺栓制動孔88中停止的連接螺栓74與螺栓孔76螺紋嚙合。由於此特徵,活塞58與軛鐵64互相連接在一起,以及第一至第四永久磁鐵56a至56d通過軛鐵64間接固持於活塞58上。 The upper end surface of the shaft 68 inserted through the insertion hole 78 of the plate member 42 is inserted into the insertion hole 86 formed in the lower end surface of the piston 58. A bolt stopping hole 88 is formed in the piston 58 from the upper end face side to the insertion hole 86, and a connecting bolt 74 stopped in the bolt stopping hole 88 is screwed into the bolt hole 76. Due to this feature, the piston 58 and the yoke 64 are connected to each other, and the first to fourth permanent magnets 56 a to 56 d are indirectly held on the piston 58 through the yoke 64.

在活塞58的一側壁上設置第三密封構件90。在活塞58與缸管14之間的一部位被第三密封構件90密封。更具體言之,防止上腔室62內的壓縮空氣由活塞58的側壁、缸管14的第二滑行孔38內壁之間洩露進入第二中間腔室60。同理,可防止第二中間腔室60內的空氣洩露進入上腔室62。 A third sealing member 90 is provided on one side wall of the piston 58. A portion between the piston 58 and the cylinder tube 14 is sealed by the third sealing member 90. More specifically, the compressed air in the upper chamber 62 is prevented from leaking into the second intermediate chamber 60 from between the side wall of the piston 58 and the inner wall of the second glide hole 38 of the cylinder tube 14. Similarly, the air in the second intermediate chamber 60 can be prevented from leaking into the upper chamber 62.

在活塞58的上端面上形成寬廣的第三環形溝槽92。環狀第二減震器94容納於第三環形溝槽92中。當活塞58到達上止點時,第二減震器94抵接頭罩18之進入構件44的下端面(參考第3圖)。 A wide third annular groove 92 is formed on the upper end surface of the piston 58. The annular second shock absorber 94 is accommodated in the third annular groove 92. When the piston 58 reaches top dead center, the second shock absorber 94 abuts the lower end surface of the entry member 44 of the joint cover 18 (refer to FIG. 3 ).

基本上用上述方式構造根據本具體實施例的磁力卡盤10。接下來,描述與磁力卡盤10之操作有關的動作及其有利效果。 The magnetic chuck 10 according to the present specific embodiment is basically constructed in the above-described manner. Next, actions related to the operation of the magnetic chuck 10 and its advantageous effects are described.

磁力卡盤10,例如,設置於未圖示機器人的遠端手臂上。另外,藉由該機器人執行預定操作,如第3圖所示,使得第一至第四永久磁鐵56a至56d的工件磁吸面面向工件12。在此時,活塞58、軛鐵64及第一至第四永久磁鐵56a至56d均位在上止點,以及因此,在此時間點,第一至第四永久磁鐵56a至56d的磁力不施加於工件12。 The magnetic chuck 10 is provided, for example, on the remote arm of the robot (not shown). In addition, the robot performs a predetermined operation, as shown in FIG. 3, so that the magnetic attraction surfaces of the first to fourth permanent magnets 56 a to 56 d face the workpiece 12. At this time, the piston 58, the yoke 64, and the first to fourth permanent magnets 56a to 56d are all at the top dead center, and therefore, at this time, the magnetic force of the first to fourth permanent magnets 56a to 56d is not applied于WORK12.

接下來,由進氣排氣機構供給加壓空氣通過第二端口50到上腔室62。該加壓空氣從活塞58的上端面側壓迫它。同時,在進氣排氣機構的動作下,加壓空氣通過第一端口37由下腔室23排出。第二中間腔室60內的加壓空氣通過連通溝槽85移動進入第一中間腔室24,以及此外,第一中間腔室24內的加壓空氣由凸緣66的側壁與第一滑行孔22的內壁之間通過以及移動進入下腔室23。之後,也通過第一端口37排出上述加壓空氣。 Next, pressurized air is supplied by the intake and exhaust mechanism through the second port 50 to the upper chamber 62. The pressurized air presses the piston 58 from the upper end surface side. At the same time, under the action of the intake and exhaust mechanism, pressurized air is discharged from the lower chamber 23 through the first port 37. The pressurized air in the second intermediate chamber 60 moves into the first intermediate chamber 24 through the communication groove 85, and in addition, the pressurized air in the first intermediate chamber 24 is guided by the side wall of the flange 66 and the first glide hole The inner walls of 22 pass between and move into the lower chamber 23. After that, the pressurized air is also discharged through the first port 37.

已接受來自上腔室62內之壓縮空氣之壓迫的活塞58,會在接近板件42的方向位移(下降)。由於下腔室23、第一中間腔室24及第二中間腔室60都在負壓力下,因此活塞58容易位移。 The piston 58 that has received the pressure from the compressed air in the upper chamber 62 will be displaced (dropped) in the direction of approaching the plate 42. Since the lower chamber 23, the first intermediate chamber 24, and the second intermediate chamber 60 are all under negative pressure, the piston 58 is easily displaced.

與活塞58的下降同時地,連接至活塞58的軛鐵64,以及連接至軛鐵64的第一至第四永久磁鐵56a至56d也下降,結果,第一至第四永久磁鐵56a至56d向工件12接近。最後,活塞58、軛鐵64及第一至第四永久磁鐵56a至56d到達下止點,因而造成圖示於第4圖的情 況。 Simultaneously with the lowering of the piston 58, the yoke 64 connected to the piston 58 and the first to fourth permanent magnets 56a to 56d connected to the yoke 64 also fall. As a result, the first to fourth permanent magnets 56a to 56d The workpiece 12 approaches. Finally, the piston 58, the yoke 64, and the first to fourth permanent magnets 56a to 56d reach the bottom dead center, thus causing the situation shown in FIG. 4 condition.

當活塞58到達下止點時,活塞58抵接設於板件42上的第一減震器84。在抵接時發生的振動或碰撞用第一減震器84緩衝,以及因此,可充分抑制磁力卡盤10的振動。此外,由於避免損壞活塞58或板件42,可改善磁力卡盤10的耐用性。 When the piston 58 reaches the bottom dead center, the piston 58 abuts the first shock absorber 84 provided on the plate 42. The vibration or collision that occurs at the time of contact is buffered by the first shock absorber 84, and therefore, the vibration of the magnetic chuck 10 can be sufficiently suppressed. In addition, since the damage to the piston 58 or the plate 42 is avoided, the durability of the magnetic chuck 10 can be improved.

當第一至第四永久磁鐵56a至56d到達下止點時,由於彼等的各自工件磁吸面充分鄰近工件12,彼等的磁力會施加於工件12。更具體言之,工件12被第一至第四永久磁鐵56a至56d的磁力吸引,以及通過磁鐵罩16的底壁部份,第一至第四永久磁鐵56a至56d會吸引及固持工件12。此外,由於軛鐵64的凸緣66用作輔助軛鐵,工件12會被更適當地吸引及固持。 When the first to fourth permanent magnets 56a to 56d reach the bottom dead center, since their respective workpiece magnetic attraction surfaces are sufficiently close to the workpiece 12, their magnetic force will be applied to the workpiece 12. More specifically, the work 12 is attracted by the magnetic force of the first to fourth permanent magnets 56a to 56d, and through the bottom wall portion of the magnet cover 16, the first to fourth permanent magnets 56a to 56d attract and hold the work 12. In addition, since the flange 66 of the yoke 64 is used as an auxiliary yoke, the workpiece 12 is more properly attracted and held.

由於磁鐵罩16由順磁金屬製成,磁鐵罩16無法當作軛鐵。更具體言之,該軛鐵不介入第一至第四永久磁鐵56a至56d與工件12之間。因此,可避免影響形成於在第一至第四永久磁鐵56a至56d與工件12之間的磁路。 Since the magnet cover 16 is made of paramagnetic metal, the magnet cover 16 cannot be used as a yoke. More specifically, the yoke does not intervene between the first to fourth permanent magnets 56a to 56d and the workpiece 12. Therefore, it is possible to avoid affecting the magnetic circuit formed between the first to fourth permanent magnets 56a to 56d and the workpiece 12.

再者,由於橡膠緩衝構件28設在磁鐵罩16的下端面上,當工件12被磁吸至磁鐵罩16的底壁時,緩衝構件28介入工件12的抵接。由於此介入,以及藉由加長磁力卡盤10,可減少作用於磁鐵罩16的應力。更具體言之,緩衝構件28進行緩衝作用。結果,可充分抑制磁力卡盤10的振動,以及避免損壞磁鐵罩16或第一至第四永 久磁鐵56a至56d。 Furthermore, since the rubber buffer member 28 is provided on the lower end surface of the magnet cover 16, when the work 12 is magnetically attracted to the bottom wall of the magnet cover 16, the buffer member 28 intervenes in the abutment of the work 12. Due to this intervention, and by lengthening the magnetic chuck 10, the stress acting on the magnet cover 16 can be reduced. More specifically, the buffer member 28 performs a buffer function. As a result, it is possible to sufficiently suppress the vibration of the magnetic chuck 10 and avoid damage to the magnet cover 16 or the first to fourth permanent Long magnets 56a to 56d.

在緩衝構件28與被磁吸工件12之間有磨擦阻力。因此,由於工件12對於緩衝構件28難以經歷滑動,故而可有效防止工件10與磁力卡盤10分離或脫落。以此方式,隨著該緩衝作用,緩衝構件28也進行防滑作用。換言之,緩衝構件28用作防滑裝置。 There is frictional resistance between the buffer member 28 and the magnetically attracted work 12. Therefore, since the workpiece 12 is difficult to experience sliding against the buffer member 28, the workpiece 10 and the magnetic chuck 10 can be effectively prevented from separating or falling off. In this way, along with this cushioning effect, the cushioning member 28 also performs a non-slip effect. In other words, the cushioning member 28 serves as a non-slip device.

在第5A圖及第5B圖中,示意圖示在工件磁吸面只有為N極之一極的傳統技術中發生的磁流,以及出現磁飽和的區域。在此情形下,從構成工件磁吸面之N極開始的磁流穿過工件12的內部,以及指向在背面上的S極。已出現磁飽和的區域呈實質圓形。 In FIG. 5A and FIG. 5B, the schematic diagram shows the magnetic current that occurs in the conventional technology in which the magnetic attraction surface of the workpiece has only one of the N poles and the area where magnetic saturation occurs. In this case, the magnetic current starting from the N pole constituting the magnetic attraction surface of the workpiece passes through the inside of the workpiece 12 and is directed to the S pole on the back surface. The area where magnetic saturation has occurred is substantially circular.

另一方面,第6A圖及第6B圖示意圖示N極與S極在工件磁吸面上組合形成為一對時發生的磁流,以及發生磁飽和的區域。用此組態,從構成工件磁吸面之N極開始的磁流穿過工件12的內部,以及指向鄰近工件吸引面的S極,以及在其背面上的S極。此外,從位於工件磁吸面之背面上的N極開始的磁流穿過工件12的內部,以及指向工件吸引面的S極,而且穿過軛鐵64的內部,以及指向在工件磁吸面之背面上的S極。結果,在直徑上的位置也與形成為圓形的一起發生磁飽和。 On the other hand, FIG. 6A and FIG. 6B are schematic diagrams showing the magnetic currents generated when the N pole and the S pole are combined into a pair on the magnetic attraction surface of the workpiece and the area where magnetic saturation occurs. With this configuration, the magnetic current starting from the N pole constituting the magnetic attraction surface of the workpiece passes through the inside of the workpiece 12, and the S pole directed toward the adjacent attraction surface of the workpiece, and the S pole on the back surface thereof. In addition, the magnetic current starting from the N pole on the back surface of the magnetic attraction surface of the workpiece passes through the interior of the workpiece 12 and the S pole pointing to the attraction surface of the workpiece, and passes through the interior of the yoke 64 and is directed to the magnetic attraction surface of the workpiece S pole on the back. As a result, the magnetic saturation occurs with the position in the diameter together with the circle.

第7圖示意圖示在N極與S極在工件磁吸面上組合形成為兩對時發生的磁流,以及發生磁飽和的區域。在此情形下,在兩個直徑上的位置也與形成為圓形的一起發生磁飽和。相較於先前提及的組態,當N極與S極 的組合形成時,不用說磁流通過工件12內部的數量會變大。 Fig. 7 is a schematic diagram showing the magnetic currents generated when the N pole and the S pole are combined into two pairs on the magnetic attraction surface of the workpiece, and the areas where magnetic saturation occurs. In this case, magnetic saturation also occurs at the positions on the two diameters together with the circles. Compared to the previously mentioned configuration, when the N pole and S pole When the combination is formed, it goes without saying that the amount of magnetic current passing through the interior of the workpiece 12 will become larger.

第8圖的曲線圖圖示永久磁鐵外徑與藉此生產之吸力的關係,其圖示使用單一永久磁鐵以及工件磁吸面有一個的磁力卡盤。形成於其上的單一N極(■(黑色方塊)圖),使用兩個永久磁鐵以及工件磁吸面有一個N極及一個S極的磁力卡盤,其中N極與S極在其上組合形成為一對(◆(黑色菱形)圖),以及使用第一至第四永久磁鐵56a至56d之四個永久磁鐵以及工件磁吸面包含在其上組合形成為兩對之N極及S極的本具體實施例磁力卡盤10(▲(黑色三角形)圖)。不用說,在各個磁力卡盤中的永久磁鐵的材料及固持力,以及該等永久磁鐵的整體尺寸彼此是一樣的。 The graph in Figure 8 shows the relationship between the outer diameter of the permanent magnet and the suction force produced thereby, which shows the use of a single permanent magnet and a magnetic chuck on the magnetic attraction surface of the workpiece. A single N-pole formed on it (■ (black square) diagram), using two permanent magnets and a magnetic chuck with a N-pole and an S-pole on the magnetic attraction surface of the workpiece, where the N-pole and S-pole are combined on it Formed as a pair (◆ (black diamond) diagram), and the four permanent magnets using the first to fourth permanent magnets 56a to 56d and the magnetic attraction surface of the work piece are combined to form two pairs of N pole and S pole The magnetic chuck 10 of this specific embodiment (▲ (black triangle) diagram). Needless to say, the materials and holding force of the permanent magnets in each magnetic chuck, and the overall dimensions of the permanent magnets are the same as each other.

由第8圖也可了解,隨著工件磁吸面上的磁極數增加,吸力變得更大。特別是,當永久磁鐵的外徑大致上超過20毫米時,或當工件12的厚度變小時,吸力的差異變顯著。從這個事實,明確的,藉由在工件磁吸面上形成N極與S極的組合為一對或更多,而且兩對或更多更佳,可表現足夠的吸力,藉此甚至可吸引及固持由薄鋼板製成且為笨重物件的工件12。這是因為,如上述,由於N極與S極在工件磁吸面上形成的組合,磁流通過工件12內部的數量會變大。 It can also be seen from Figure 8 that as the number of magnetic poles on the magnetic attraction surface of the workpiece increases, the attraction force becomes greater. In particular, when the outer diameter of the permanent magnet substantially exceeds 20 mm, or when the thickness of the workpiece 12 becomes small, the difference in suction force becomes significant. From this fact, it is clear that by forming the combination of the N pole and the S pole on the magnetic attraction surface of the workpiece into one or more pairs, and two or more pairs are better, it can exhibit sufficient suction force, thereby even attracting And hold the workpiece 12 made of thin steel plate and being a bulky object. This is because, as described above, due to the combination of the N pole and the S pole on the magnetic attraction surface of the workpiece, the amount of magnetic current passing through the interior of the workpiece 12 becomes larger.

如上述,藉由在工件磁吸面上形成N極與S極的組合,對於工件12的吸力會變大。特別是,根據本具 體實施例,N極與S極在工件磁吸面上係組合形成為兩對,以及因此,表現足夠的吸力。 As described above, by forming the combination of the N pole and the S pole on the magnetic attraction surface of the workpiece, the attraction force to the workpiece 12 becomes larger. In particular, according to this tool In an embodiment, the N pole and the S pole are combined into two pairs on the magnetic attraction surface of the workpiece, and therefore, exhibit sufficient suction force.

結果,根據本具體實施例,假設該等永久磁鐵的材料及特性相同,當外徑相同時,可增加對於工件12的吸力。這意謂,甚至可吸引及固持重量更大的工件12。 As a result, according to the present embodiment, assuming that the materials and characteristics of the permanent magnets are the same, when the outer diameters are the same, the attraction force to the workpiece 12 can be increased. This means that even heavier workpieces 12 can be attracted and held.

替換地,如果吸力等效,該等永久磁鐵大致上可設定為較小的直徑。換言之,可做出尺寸及規模緊湊的磁力卡盤10。 Alternatively, if the suction force is equivalent, the permanent magnets may be set to a relatively small diameter. In other words, a magnetic chuck 10 with a compact size and scale can be made.

藉由修改構成緩衝構件28之筒狀部29b從中空筒狀柱25(磁鐵罩16)突出的突出數量D,也可調整對於工件12的吸力。關於這點,會參考第9A圖至第9C圖和第10圖來說明。為了有助於描述,圖示於第9A圖至第9C圖的緩衝構件各自用元件符號28A、28B及28C標示。 By modifying the number D of protrusions of the cylindrical portion 29b constituting the buffer member 28 from the hollow cylindrical column 25 (magnet cover 16), the suction force to the workpiece 12 can also be adjusted. This point will be explained with reference to FIGS. 9A to 9C and FIG. 10. To facilitate the description, the cushioning members illustrated in FIGS. 9A to 9C are respectively indicated by element symbols 28A, 28B, and 28C.

緩衝構件28A、28B、28C各自包含筒狀部29bA、29bB、29bC。另外,由第9A圖至第9C圖的對照差異可了解,筒狀部29bA、29bB、29bC由中空筒狀柱25突出的突出數量D1、D2、D3按此順序變大。更具體言之,在突出數量D1至D3中,滿足關係式D1<D2<D3。 The cushion members 28A, 28B, and 28C each include the cylindrical portions 29bA, 29bB, and 29bC. In addition, as can be understood from the comparison difference of FIGS. 9A to 9C, the number of protrusions D1, D2, and D3 of the cylindrical portions 29bA, 29bB, and 29bC protruding from the hollow cylindrical column 25 increases in this order. More specifically, among the number of protrusions D1 to D3, the relationship D1<D2<D3 is satisfied.

如上述,在工件12被磁吸至磁鐵罩16之底壁時,緩衝構件28A至28C介入工件12。結果,工件12與已到達下止點之第一至第四永久磁鐵56a至56d的距離按緩衝構件28A、28B及28C的順序變大。這是因為,藉由工件12分別抵接由中空筒狀柱25突出的筒狀部29bA、29bB、29bC,工件12超過被抑制的數量而愈來愈接近第 一至第四永久磁鐵56a至56d。 As described above, when the work 12 is magnetically attracted to the bottom wall of the magnet cover 16, the buffer members 28A to 28C intervene in the work 12. As a result, the distance between the workpiece 12 and the first to fourth permanent magnets 56a to 56d that has reached the bottom dead center becomes larger in the order of the cushion members 28A, 28B, and 28C. This is because, when the workpiece 12 abuts the cylindrical portions 29bA, 29bB, and 29bC protruding from the hollow cylindrical column 25, the workpiece 12 exceeds the suppressed amount and becomes closer to the first One to fourth permanent magnets 56a to 56d.

第10圖的曲線圖圖示工件12與第一至第四永久磁鐵56a至56d之間隔距離的關係,以及第一至第四永久磁鐵56a至56d對於工件12的吸力變化。在第10圖中,在突出數量為D1、D2或D3時的間隔距離在橫軸上以D1、D2、D3圖示。 The graph of FIG. 10 illustrates the relationship between the separation distance between the workpiece 12 and the first to fourth permanent magnets 56a to 56d, and the change in the suction force of the first to fourth permanent magnets 56a to 56d against the workpiece 12. In FIG. 10, the separation distance when the number of protrusions is D1, D2, or D3 is shown as D1, D2, and D3 on the horizontal axis.

由第10圖可了解,隨著間隔距離增加,吸力變小。原因在於,隨著間隔距離變大,第一至第四永久磁鐵56a至56d的吸力變得更加難以施加於工件12。 It can be understood from Figure 10 that as the separation distance increases, the suction force becomes smaller. The reason is that as the separation distance becomes larger, the attracting forces of the first to fourth permanent magnets 56a to 56d become more difficult to apply to the workpiece 12.

由例如以上所述的理由,通過調換突出數量D不同的緩衝構件28,可適當地調整對於工件12的吸力。結果,例如,當工件12為具有大重量的物件時,可增加吸力,以及可使得工件12在運送期間的掉落更難發生。反之,當工件12為輕重量物件時,除了避免工件12掉落以外,可使吸力小到使得工件12在運送後能夠輕易地被第一至第四永久磁鐵56a至56d的磁吸力釋放。 For the reasons described above, for example, by replacing the buffer members 28 having different protrusion numbers D, the suction force to the workpiece 12 can be adjusted appropriately. As a result, for example, when the work piece 12 is an object having a large weight, the suction force can be increased, and the fall of the work piece 12 during transportation can be made more difficult to occur. On the contrary, when the work piece 12 is a light-weight object, in addition to preventing the work piece 12 from falling, the suction force can be made so small that the work piece 12 can be easily released by the magnetic attraction force of the first to fourth permanent magnets 56a to 56d after being transported.

更具體言之,當該等緩衝構件28,製備由中空筒狀柱25突出有不同突出數量D的多個此類構件,以及改善多樣性,例如,通過調換與有輕重量或重重量本質等等的待運送工件12適當地匹配的緩衝構件28。 More specifically, when the buffer members 28 are prepared, a plurality of such members protruding from the hollow cylindrical column 25 with a different number of protrusions D are prepared, and diversity is improved, for example, by exchanging the light weight or heavy weight essence, etc. The buffer member 28 of the workpiece 12 to be transported is appropriately matched.

當以上述方式使用多個緩衝構件28時,突出數量D不同的構件可各有不同的顏色。更具體言之,在上述實施例中,有突出數量D1的緩衝構件28A,有突出數量D2的緩衝構件28B,以及有突出數量D3的緩衝構件28C 最好各有不同的顏色。因此,基於緩衝構件28的顏色,可快速確認有所欲突出數量的緩衝構件28。結果,可避免緩衝構件28的錯誤附接。 When a plurality of buffer members 28 are used in the above-described manner, members having different protrusion numbers D may each have different colors. More specifically, in the above-described embodiment, there are the buffer member 28A with the protruding number D1, the buffer member 28B with the protruding number D2, and the buffer member 28C with the protruding number D3 It is best to have different colors. Therefore, based on the color of the cushioning member 28, it is possible to quickly confirm the number of cushioning members 28 to be projected. As a result, erroneous attachment of the buffer member 28 can be avoided.

為了使其顏色不同,用以便於識別或確認突出數量D不同之緩衝構件28的構件沒有特別限制。例如,可提供任何合適識別符,例如標記或其類似者,使得各個緩衝構件28的外觀彼此不同。 In order to make the colors different, the members for facilitating the identification or confirmation of the buffer members 28 having different protruding numbers D are not particularly limited. For example, any suitable identifier, such as a mark or the like, may be provided so that the appearance of the respective cushion members 28 are different from each other.

如上述,藉由機器人實行預定操作,在工件12已被吸引(磁吸)後,遠端手臂與磁力卡盤10移到適當的位置。工件12也與它們一起移動。 As described above, by the robot performing a predetermined operation, after the workpiece 12 has been attracted (magnetically attracted), the distal arm and the magnetic chuck 10 are moved to an appropriate position. The work pieces 12 also move with them.

接下來,在進氣排氣機構的動作下,加壓空氣通過第二端口50由上腔室62排出。同時,加壓空氣通過第一端口37由進氣排氣機構供給至下腔室23。該加壓空氣有一部份由凸緣66與第一滑行孔22的側壁之間進入第一中間腔室24,以及此外,通過連通溝槽85以及進入第二中間腔室60。因此,連同軛鐵64的凸緣66接受來自下腔室23內之壓縮空氣的壓迫,活塞58也接受來自第一中間腔室24內之壓縮空氣的壓迫。加上上腔室62處於負壓力,活塞58會在單獨遠離板件42的方向位移(上升)。 Next, under the action of the intake and exhaust mechanism, pressurized air is discharged from the upper chamber 62 through the second port 50. At the same time, pressurized air is supplied to the lower chamber 23 by the intake and exhaust mechanism through the first port 37. A part of the pressurized air enters the first intermediate chamber 24 between the flange 66 and the side wall of the first glide hole 22, and further passes through the communication groove 85 and enters the second intermediate chamber 60. Therefore, along with the flange 66 of the yoke 64 receiving the compressed air from the lower chamber 23, the piston 58 also receives the compressed air from the first intermediate chamber 24. Coupled with the negative pressure of the upper chamber 62, the piston 58 will be displaced (raised) away from the plate 42 alone.

根據本具體實施例,第三密封構件90設置於活塞58的側壁上。更具體言之,密封構件不設置於軛鐵64與第二中間腔室60的內壁之間。因此,在上述過程中,接受供給至上腔室62之加壓空氣之壓制力以及已經移動進入第二中間腔室60之氣體壓制力的構件,在這兩種情形 下,都是活塞58。另外,儘管在活塞58的下端面上存在被軸桿68覆蓋的區域,凸緣66也接受來自壓縮空氣的壓迫。更具體言之,在活塞58下降時的壓力接受面積,以及在活塞58上升時的壓力接受面積實質相同。結果,可避免升高活塞所需要的推力減少。 According to the present specific embodiment, the third sealing member 90 is provided on the side wall of the piston 58. More specifically, the sealing member is not provided between the yoke 64 and the inner wall of the second intermediate chamber 60. Therefore, in the above process, the member that receives the pressing force of the pressurized air supplied to the upper chamber 62 and the gas pressing force that has moved into the second intermediate chamber 60, in both cases Below, both are piston 58. In addition, although there is an area covered by the shaft 68 on the lower end surface of the piston 58, the flange 66 receives compression from compressed air. More specifically, the pressure receiving area when the piston 58 is descending is substantially the same as the pressure receiving area when the piston 58 is rising. As a result, the reduction in thrust required to raise the piston can be avoided.

隨著正被升高的活塞58,軛鐵64及第一至第四永久磁鐵56a至56d被整體地升高。更具體言之,第一至第四永久磁鐵56a至56d與工件12實體分離,結果,第一至第四永久磁鐵56a至56d的磁力不施加於工件12上。結果,工件12可脫離第一至第四永久磁鐵56a至56d之磁力的約束。 With the piston 58 being raised, the yoke 64 and the first to fourth permanent magnets 56a to 56d are raised as a whole. More specifically, the first to fourth permanent magnets 56a to 56d are physically separated from the workpiece 12, and as a result, the magnetic force of the first to fourth permanent magnets 56a to 56d is not applied to the workpiece 12. As a result, the work piece 12 can be released from the magnetic force of the first to fourth permanent magnets 56a to 56d.

活塞58、軛鐵64及第一至第四永久磁鐵56a至56d最後到達上止點。換言之,恢復圖示第3圖的情況。 The piston 58, the yoke 64, and the first to fourth permanent magnets 56a to 56d finally reach top dead center. In other words, the situation shown in FIG. 3 is restored.

當活塞58到達上止點時,板件42的盤形突出物80進入形成於軛鐵64之凸緣66中的環形凹部72。此外,設於活塞58上的第二減震器94抵接頭罩18的進入構件44。在抵接時發生的振動或碰撞用第二減震器94緩衝,以及因此,可充分抑制磁力卡盤10的振動。此外,由於避免損壞活塞58或頭罩18,因此可改善磁力卡盤10的耐用性。 When the piston 58 reaches top dead center, the disk-shaped protrusion 80 of the plate 42 enters the annular recess 72 formed in the flange 66 of the yoke 64. In addition, the second shock absorber 94 provided on the piston 58 abuts the entry member 44 of the joint cover 18. The vibration or collision that occurs at the time of contact is buffered by the second shock absorber 94, and therefore, the vibration of the magnetic chuck 10 can be sufficiently suppressed. In addition, since damage to the piston 58 or the head cover 18 is avoided, the durability of the magnetic chuck 10 can be improved.

此外,在上述過程的進展期間,防止第一至第四永久磁鐵56a至56d的旋轉。這是因為,如上述,第一至第四繫桿54a至54d配置於第一至第四永久磁鐵56a至56d附近。由於以此方式限制第一至第四永久磁鐵56a 至56d的旋轉,例如,避免在自動開關附近的磁流密度改變。結果,也可避免磁流密度的這種變化造成發生自動開關錯誤操作。 In addition, during the progress of the above process, the rotation of the first to fourth permanent magnets 56a to 56d is prevented. This is because, as described above, the first to fourth tie bars 54a to 54d are arranged near the first to fourth permanent magnets 56a to 56d. Since the first to fourth permanent magnets 56a are restricted in this way The rotation to 56d, for example, avoids changing the magnetic flux density near the automatic switch. As a result, it is also possible to prevent such a change in the magnetic current density from causing an automatic switching error operation.

第一至第四繫桿54a至54d用作將頭罩18、缸管14及磁鐵罩16全部緊緊地扣緊在一起以及形成殼體20的構件。更具體言之,由於防止第一至第四永久磁鐵56a至56d的旋轉,不需要使用與彼等分離的其他構件。因此,可避免部件數增加,而且使磁力卡盤10更加緊湊,另外在成本上也有利。 The first to fourth tie rods 54a to 54d serve as members for tightly fastening the head cover 18, the cylinder tube 14 and the magnet cover 16 together, and forming the housing 20. More specifically, since the rotation of the first to fourth permanent magnets 56a to 56d is prevented, there is no need to use other members separate from them. Therefore, the increase in the number of parts can be avoided, and the magnetic chuck 10 can be made more compact, which is also advantageous in terms of cost.

本發明不特別限定於上述具體實施例,而且可採用各種修改,而不脫離本發明的要旨及範疇。 The present invention is not particularly limited to the above specific embodiments, and various modifications can be adopted without departing from the gist and scope of the present invention.

例如,如第11圖所示,可組合兩個或更多U形永久磁鐵100(第11圖圖示三個),以及兩個或更多的N極與兩個或更多的S極可駐留在工件磁吸面上。除了此一組合外,可組合U形永久磁鐵100(第12圖圖示兩個)使得它們的磁極面如第12圖的仰視圖所示地排列。 For example, as shown in FIG. 11, two or more U-shaped permanent magnets 100 (three shown in FIG. 11) can be combined, and two or more N poles and two or more S poles can be combined. Resides on the magnetic surface of the workpiece. In addition to this combination, U-shaped permanent magnets 100 (two shown in FIG. 12) may be combined so that their magnetic pole faces are arranged as shown in the bottom view of FIG.

此外,如第13圖所示,三個或更多桿形磁鐵102的組合(第13圖圖示三個)可形成所謂的海爾貝克陣列(Halbach array),以及一組N極及S極的組合可設置於工件吸引面上。 In addition, as shown in FIG. 13, a combination of three or more rod-shaped magnets 102 (three shown in FIG. 13) can form a so-called Halbach array, and a group of N poles and S poles. The combination can be set on the suction surface of the workpiece.

儘管在上述具體實施例中,使用多個永久磁鐵,然而可使用藉由磁化所製造的單一永久磁鐵,使得在工件磁吸面上存在兩對或更多對的N極與S極的排列。 Although in the above specific embodiments, a plurality of permanent magnets are used, a single permanent magnet manufactured by magnetization may be used so that there are two or more pairs of N poles and S poles arranged on the magnetic attraction surface of the workpiece.

作為此一永久磁鐵的實施例,如第14圖所 示,進行預定物件的磁化,例如圓柱體98,使得該等磁極的取向變成U形。藉由使U形磁鐵緊鄰圓柱體98的一底面以製造此一永久磁鐵,藉此在該底面上形成一N極與一S極。更具體言之,該一底面變成工件磁吸面,在另一底面的其餘部份則不形成磁極。 As an example of this permanent magnet, as shown in Figure 14 As shown, the magnetization of a predetermined object, such as the cylinder 98, makes the orientation of the magnetic poles U-shaped. This permanent magnet is manufactured by bringing a U-shaped magnet close to a bottom surface of the cylinder 98, thereby forming an N pole and an S pole on the bottom surface. More specifically, the one bottom surface becomes the magnetic surface of the workpiece, and the magnetic pole is not formed on the remaining part of the other bottom surface.

再者,除了使U形永久磁鐵緊鄰圓柱體98或其類似者的一底面以外,藉由使另一U形永久磁鐵緊鄰另一底面,如第15圖所示,製成一永久磁鐵,其中在用作工件磁吸面的一底面上形成一N極及一S極,以及在彼之背面上形成一S極及一N極。更具體言之,在此情形下,進行磁化使得磁極垂直地指向工件吸引面。 Furthermore, in addition to making the U-shaped permanent magnet close to a bottom surface of the cylinder 98 or the like, by making another U-shaped permanent magnet close to the other bottom surface, as shown in FIG. 15, a permanent magnet is made, in which An N pole and an S pole are formed on a bottom surface used as a magnetic attraction surface of the workpiece, and an S pole and an N pole are formed on the back surface of each other. More specifically, in this case, the magnetization is performed so that the magnetic pole is directed vertically toward the workpiece suction surface.

更進一步,第一減震器84可設置於活塞58的下端面上。另一方面,第二減震器94可設置於頭罩18之進入構件44的下端面上。 Furthermore, the first shock absorber 84 may be provided on the lower end surface of the piston 58. On the other hand, the second shock absorber 94 may be provided on the lower end surface of the entrance member 44 of the head cover 18.

另外,可省略第一減震器84或者是第二減震器94中之一者。 In addition, one of the first shock absorber 84 or the second shock absorber 94 may be omitted.

此外,該緩衝構件不特別限於上述緩衝構件28,以及28A至28C。例如,如第16圖所示,可提供包含在徑向向內方向突出之凸緣29c的緩衝構件110。在此情形下,在中空筒狀柱25上,形成在徑向向內方向下凹的第一環形溝槽112,以及凸緣29c可壓入配合(press-fit)於第一環形溝槽112中。 In addition, the buffer member is not particularly limited to the above-mentioned buffer members 28, and 28A to 28C. For example, as shown in FIG. 16, a cushion member 110 including a flange 29c protruding in a radially inward direction may be provided. In this case, on the hollow cylindrical column 25, a first annular groove 112 that is recessed in a radially inward direction is formed, and the flange 29c can be press-fitted to the first annular groove Groove 112.

此外,如第17圖及第18圖所示,可使用在厚度方向形成錐形橫截面的緩衝構件114或緩衝構件 116。在此情形下,第一環形溝槽118或第一環形溝槽120可形成於中空筒狀柱25的端面上(參考第17圖),或替換地,可形成於側壁上(參考第18圖)。在這兩個情形下,由於呈錐形,可防止緩衝構件114、116被拉出第一環形溝槽118、120。 In addition, as shown in FIGS. 17 and 18, a buffer member 114 or a buffer member having a tapered cross section in the thickness direction may be used 116. In this case, the first annular groove 118 or the first annular groove 120 may be formed on the end surface of the hollow cylindrical column 25 (refer to FIG. 17), or alternatively, may be formed on the side wall (refer to 18 Figure). In both cases, due to the tapered shape, the buffer members 114, 116 can be prevented from being pulled out of the first annular grooves 118, 120.

對於磁鐵罩16的附接也沒有限定凸緣29a要壓入配合於第一環形溝槽26或其類似者中。更具體言之,如第19圖所示,緩衝構件122可用螺絲124附接至磁鐵罩16。在此情形下,不一定需要形成環形的緩衝構件122,以及可附接多個弧形緩衝構件122。 There is also no limitation to the attachment of the magnet cover 16 that the flange 29a is to be press-fitted into the first annular groove 26 or the like. More specifically, as shown in FIG. 19, the buffer member 122 may be attached to the magnet cover 16 with screws 124. In this case, it is not necessary to form the buffer member 122 in a ring shape, and a plurality of arc-shaped buffer members 122 may be attached.

10‧‧‧磁力卡盤 10‧‧‧Magnetic chuck

22‧‧‧第一滑行孔 22‧‧‧ First glide hole

23‧‧‧下腔室 23‧‧‧Lower chamber

24‧‧‧第一中間腔室 24‧‧‧First middle chamber

26‧‧‧第一環形溝槽 26‧‧‧First annular groove

28‧‧‧緩衝構件 28‧‧‧buffer member

29‧‧‧狹縫 29‧‧‧Slit

29b‧‧‧筒狀部 29b‧‧‧Cylinder

30‧‧‧中間側翼部 30‧‧‧Middle flanks

54a至54d‧‧‧防轉構件 54a to 54d

56a‧‧‧第一永久磁鐵 56a‧‧‧First permanent magnet

56b‧‧‧第二永久磁鐵 56b‧‧‧Second Permanent Magnet

56c‧‧‧第三永久磁鐵 56c‧‧‧third permanent magnet

56d‧‧‧第四永久磁鐵 56d‧‧‧The fourth permanent magnet

Claims (20)

一種磁力卡盤(10),其藉由多個永久磁鐵(56a至56d)的磁力,用面向一工件(12)的一工件磁吸面吸引及固持該工件(12),該磁力卡盤(10)包含:收容於一缸管(14)內的一活塞(58);其中:該等多個永久磁鐵(56a至56d)經組配成由於該活塞(58)接受來自一壓力流體的一壓制力的關係而位移時,以與該活塞(58)之位移方向相同的方向位移;以及該等多個永久磁鐵(56a至56d)經配置成以造成在該工件磁吸面上存在一對或更多對N極與S極的組合;在該缸管(14)中設置經組配成以防止該等永久磁鐵(56a至56d)旋轉的一防轉構件(54a至54d);該N極與該S極係設成彼此接觸。 A magnetic chuck (10) which attracts and holds a work piece (12) by a magnetic attraction surface of a work piece (12) by the magnetic force of a plurality of permanent magnets (56a to 56d). 10) comprising: a piston (58) housed in a cylinder tube (14); wherein: the plurality of permanent magnets (56a to 56d) are assembled so that the piston (58) receives a pressure fluid from a When it is displaced by the pressing force, it is displaced in the same direction as the displacement direction of the piston (58); and the plurality of permanent magnets (56a to 56d) are configured to cause a pair of magnetic attraction surfaces on the workpiece Or more pairs of N poles and S poles; an anti-rotation member (54a to 54d) configured to prevent the rotation of the permanent magnets (56a to 56d) is arranged in the cylinder tube (14); the N The pole and the S pole are arranged in contact with each other. 如申請專利範圍第1項所述之磁力卡盤(10),其中該等多個永久磁鐵(56a至56d)中之每一者經組配成其磁化方向與該工件磁吸面垂直。 The magnetic chuck (10) as described in item 1 of the patent application scope, wherein each of the plurality of permanent magnets (56a to 56d) is assembled so that its magnetization direction is perpendicular to the magnetic attraction surface of the workpiece. 如申請專利範圍第2項所述之磁力卡盤(10),其中該N極與該S極在該工件磁吸面上各自駐留成為一極。 The magnetic chuck (10) as described in item 2 of the patent application scope, wherein the N pole and the S pole reside on the magnetic attraction surface of the workpiece to become one pole. 如申請專利範圍第2項所述之磁力卡盤(10),其中該N極與該S極在該工件磁吸面上各自駐留成為兩極。 The magnetic chuck (10) as described in item 2 of the patent application scope, wherein the N pole and the S pole reside on the magnetic attraction surface of the workpiece as two poles. 如申請專利範圍第2項所述之磁力卡盤(10),其中該等永久磁鐵(56a至56d)通過一軛鐵(64)支撐於該活塞(58)上。 The magnetic chuck (10) as described in item 2 of the patent application scope, wherein the permanent magnets (56a to 56d) are supported on the piston (58) by a yoke (64). 如申請專利範圍第1項所述之磁力卡盤(10),包含至少 三個永久磁鐵(102)經設置成含有經磁化的方向垂直於該工件磁吸面之兩個永久磁鐵(102)的一海爾貝克陣列,其中該等兩個永久磁鐵中之一者的N極與該等兩個永久磁鐵中之另一者的S極經組配成在該工件磁吸面上暴露。 The magnetic chuck (10) as described in item 1 of the patent application scope includes at least Three permanent magnets (102) are arranged as a Haierbeck array containing two permanent magnets (102) whose magnetization direction is perpendicular to the magnetic attraction surface of the workpiece, wherein the N pole of one of the two permanent magnets The S pole of the other of the two permanent magnets is configured to be exposed on the magnetic attraction surface of the workpiece. 如申請專利範圍第1項所述之磁力卡盤(10),其中該等永久磁鐵由U形磁鐵(100)構成,該等U形磁鐵(100)中之每一者的N極與S極經組配成在該工件磁吸面上暴露。 The magnetic chuck (10) as described in item 1 of the patent application scope, wherein the permanent magnets are composed of U-shaped magnets (100), and the N pole and S pole of each of the U-shaped magnets (100) It is arranged to be exposed on the magnetic attraction surface of the workpiece. 如申請專利範圍第1項所述之磁力卡盤(10),其中該防轉構件(54a至54d)由一鐵磁材料製成,而且設置於在該工件磁吸面上彼此相鄰的該N極及該S極間之界線。 The magnetic chuck (10) as described in item 1 of the patent application range, wherein the anti-rotation member (54a to 54d) is made of a ferromagnetic material, and is provided on the magnetic attraction surface of the workpiece adjacent to each other The boundary between the N pole and the S pole. 如申請專利範圍第1項所述之磁力卡盤(10),其中該防轉構件(54a至54d)為經組配成以連接該缸管(14)與一頭罩(18)的一連接構件(54a至54d)。 The magnetic chuck (10) as described in item 1 of the patent scope, wherein the anti-rotation member (54a to 54d) is a connecting member assembled to connect the cylinder tube (14) and a head cover (18) (54a to 54d). 如申請專利範圍第1項所述之磁力卡盤(10),其中一密封構件(90)設置於該活塞(58)的一側壁上,以及在該活塞(58)與該缸管(14)之間的一部位經組配成以藉由該密封構件(90)密封。 The magnetic chuck (10) as described in item 1 of the patent scope, wherein a sealing member (90) is provided on a side wall of the piston (58), and between the piston (58) and the cylinder tube (14) A part in between is assembled to be sealed by the sealing member (90). 如申請專利範圍第1項所述之磁力卡盤(10),其更包含附接至該缸管(14)且經組配成以覆蓋該等永久磁鐵(56a至56d)的一磁鐵罩(16),其中經組配成在該等永久磁鐵(56a至56d)吸引該工件(12)時進行緩衝作用的一緩衝構件(28)係可拆卸地 裝在該磁鐵罩(16)上。 The magnetic chuck (10) as described in item 1 of the patent application scope further includes a magnet cover attached to the cylinder tube (14) and assembled to cover the permanent magnets (56a to 56d) ( 16), wherein a buffer member (28) configured to perform buffering when the permanent magnets (56a to 56d) attract the workpiece (12) is detachably Installed on the magnet cover (16). 如申請專利範圍第11項所述之磁力卡盤(10),其中對於該工件(12)的吸力經組配成在該緩衝構件(28)替換成有從該磁鐵罩(16)突出之不同厚度的另一緩衝構件(28)時改變。 The magnetic chuck (10) as described in item 11 of the patent application scope, wherein the suction force for the workpiece (12) is configured to be replaced in the buffer member (28) with a difference protruding from the magnet cover (16) The thickness of the other buffer member (28) is changed. 一種磁力卡盤(10),其藉由一個永久磁鐵(98)的磁力,用面向一工件(12)之一工件磁吸面吸引及固持該工件(12),該磁力卡盤(10)包含:收容於一缸管(14)內的一活塞(58);其中:該永久磁鐵(98)經組配成在該活塞(58)接受來自一壓力流體的一壓制力並且從而位移時,以與該活塞(58)之位移方向相同的方向位移;以及該永久磁鐵(98)經組配成經磁化以造成在該工件磁吸面上存在一或更多對N極與S極的組合;在該缸管(14)中設置經組配成以防止該永久磁鐵(98)旋轉的一防轉構件(54a至54d);該N極與該S極係設成彼此接觸。 A magnetic chuck (10), which attracts and holds the workpiece (12) by a magnetic attraction surface of a workpiece (12) by the magnetic force of a permanent magnet (98), the magnetic chuck (10) includes : A piston (58) housed in a cylinder tube (14); wherein: the permanent magnet (98) is configured such that when the piston (58) receives a pressing force from a pressure fluid and thereby displaces, Displacement in the same direction as the displacement direction of the piston (58); and the permanent magnet (98) is configured to be magnetized to cause one or more pairs of N and S poles to exist on the magnetic attraction surface of the workpiece; An anti-rotation member (54a to 54d) configured to prevent the permanent magnet (98) from rotating is provided in the cylinder tube (14); the N pole and the S pole are arranged in contact with each other. 如申請專利範圍第13項所述之磁力卡盤(10),其中該永久磁鐵(98)經組配成經磁化為一U形,以及其該N極與該S極經組配成在該工件磁吸面上暴露。 The magnetic chuck (10) as described in item 13 of the patent application scope, wherein the permanent magnet (98) is assembled to be magnetized into a U-shape, and the N pole and the S pole are assembled in the The workpiece is exposed on the magnetic surface. 如申請專利範圍第13項所述之磁力卡盤(10),其中該永久磁鐵(98)經組配成其磁化方向與該工件磁吸面垂直。 The magnetic chuck (10) as described in item 13 of the patent application scope, wherein the permanent magnet (98) is assembled so that its magnetization direction is perpendicular to the magnetic attraction surface of the workpiece. 如申請專利範圍第13項所述之磁力卡盤(10),其中該 防轉構件(54a至54d)由一鐵磁材料製成,而且設置於在該工件磁吸面上彼此相鄰的該N極及該S極間之界線。 The magnetic chuck (10) as described in item 13 of the patent application scope, where The anti-rotation members (54a to 54d) are made of a ferromagnetic material, and are provided on the boundary between the N pole and the S pole adjacent to each other on the magnetic attraction surface of the workpiece. 如申請專利範圍第13項所述之磁力卡盤(10),其中該防轉構件(54a至54d)為經組配成以連接該缸管(14)與一頭罩(18)的一連接構件(54a至54d)。 The magnetic chuck (10) as described in item 13 of the patent application scope, wherein the anti-rotation member (54a to 54d) is a connecting member assembled to connect the cylinder tube (14) and a head cover (18) (54a to 54d). 如申請專利範圍第13項所述之磁力卡盤(10),其中一密封構件(90)設置於該活塞(58)的一側壁上,以及在該活塞(58)與該缸管(14)之間的一部位經組配成以藉由該密封構件(90)密封。 The magnetic chuck (10) as described in item 13 of the patent application scope, wherein a sealing member (90) is provided on a side wall of the piston (58), and between the piston (58) and the cylinder tube (14) A part in between is assembled to be sealed by the sealing member (90). 如申請專利範圍第13項所述之磁力卡盤(10),其更包含附接至該缸管(14)且經組配成以覆蓋該永久磁鐵(98)的一磁鐵罩(16),其中經組配成在該永久磁鐵(98)吸引該工件(12)時進行緩衝作用的一緩衝構件(28)係可拆卸地裝在該磁鐵罩(16)上。 The magnetic chuck (10) as described in item 13 of the patent application scope further includes a magnet cover (16) attached to the cylinder tube (14) and assembled to cover the permanent magnet (98), A buffer member (28) configured to buffer when the permanent magnet (98) attracts the workpiece (12) is detachably mounted on the magnet cover (16). 如申請專利範圍第19項所述之磁力卡盤(10),其中對於該工件(12)的吸力經組配成在該緩衝構件(28)替換成有從該磁鐵罩(16)突出之不同厚度的另一緩衝構件(28)時改變。 The magnetic chuck (10) as described in item 19 of the patent application scope, wherein the suction force for the workpiece (12) is configured to be replaced in the buffer member (28) with a difference protruding from the magnet cover (16) The thickness of the other buffer member (28) is changed.
TW104142071A 2014-12-26 2015-12-15 Magnet chuck TWI685395B (en)

Applications Claiming Priority (4)

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JP2014264721 2014-12-26
JP2014-264721 2014-12-26
JP2015-117229 2015-06-10
JP2015117229A JP6590188B2 (en) 2014-12-26 2015-06-10 Magnet chuck

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JP2019216946A (en) * 2018-06-19 2019-12-26 株式会社マグエバー Magnet hook
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TW201628762A (en) 2016-08-16

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