M374384 五、新型說明： 【新型所屬之技術領域】 本創作係與磨床有關，更詳而言之係指一種磨床之旋 轉頭結構。 【先前技術】 按，磨床係一種利用將工件旋轉以進行研磨，而增加 工件表面精度之加工機具。 • 由於進行研磨之工件必須維持其表面精度，因此無法 利用夾持之方式將工件固定於磨床上，舊有之磨床係利用 、於旋轉頭上設置具備磁力之磁鐵將工件加以磁吸，但此種 方式並不適用於無法被磁力所吸附之工件，如非金屬材質 所製成之工件。因此，目前之磨床已改用在旋轉頭上設置 真空吸盤，以利用氣體之排吸而能將工件吸附於真空吸盤 上。但此種方式雖能適用各種材質之工件，即金屬或非金 鲁 屬皆能被吸附，但此種方式必須在真空吸盤上連接一氣 管，以由該氣管將工件與真空吸盤間之氣體排出，而使工 件與真空吸盤間形成真空之狀態，方能使得工件於旋轉頭 進行旋轉時能緊緊地被吸固於真空吸盤上，以利研磨加工 作業之進行。 然而，上述利用真空吸盤之方式雖然可以進行金屬與 非金屬工件之吸附，但由於真空吸盤必須接設氣管將工件 與真空吸盤間之氣體排出以對工件產生吸力，但因真空吸 M374384 盤會隨著旋轉頭同時轉動，因此容易由真空吸盤連動該氣 管移動，導致容易發生拉扯氣管而導致氣管受損、破裂， 或更甚而有導致吸力不足而有工件被甩出之危險情事。 【新型内容】 有鑑於此，本創作之主要目的乃在提供一種磨床之旋 ' 轉頭結構，係能避免產生吸力之氣管有被旋轉頭帶動之情 " 形，以減少機件之受損與減少發生危險之情事、以利研磨 •’作業之順利進行。 緣此，本創作乃提供一種磨床之旋轉頭結構，包含有： - 一旋轉頭主體係置於一磨床之一承載平台上，可受一傳動 馬達之驅動而原地轉動，該旋轉頭主體軸心位置具有一貫 穿頂、底之軸孔；二軸承係設置於該軸孔中；一轴桿係設 置於該軸孔中並受該軸承所套置，使當該旋轉頭主體轉動 時，該軸桿能位於原地不受連動，該轴桿之軸向形成有一 • 氣孔，該氣孔一端開口係與一氣管連通，該氣管係連通至 一真空產生裝置上，以由該真空產生裝置產生吸力而透過 該氣管、氣孔，而於氣孔另一端產生一吸力而吸附一工件。 【實施方式】 為使貴審查委員能對本創作之特徵與特點有更進一 步之了解與認同，茲列舉以下較佳實施例並配合圖式說明 如下： M374384 請參閱第-圖至第五圖，係本創作—較佳實施例所提 供一種磨床之旋轉頭結構1〇 0，其主要包含有一旋轉頭 主體1 0、二軸承2 0、一轴桿3 0及一蓋體4〇，其中： 請參閱第一圖及第二圖，該旋轉頭主體i 〇係置於一 磨床之承載平台9 1上，並受一設置於承載平台9 i上之 防塵罩體9 2所圍繞，該旋轉頭主體1 〇之頂部具有一承 載轉盤11，該承載轉盤11係露出於該防塵罩體92 外，用以供一真空吸盤9 3鎖接，該旋轉頭主體1 〇之底 部則具有一連動部1 2，係用以連接一第一皮帶輪9 4， 使可由該第一皮帶輪9 4帶動該旋轉頭主體^ 〇於該承載 平台9 1上進行原地之轉動，該旋轉頭主體丄〇之軸心位 置處形成有一貫通頂、底之軸孔13 (即該軸孔貫穿頂部 位置之承載轉盤及底部位置之連動部），且該軸孔1 3係由 孔徑較大之第一孔1 3 1及一孔徑小於該第一孔1 3 1 之第二孔1 3 2所同軸連通而成，該第一孔1 3 1並位於 該第二孔1 3 2之上方，使該第一孔1 3 2與該第二孔1 3 3之内壁交接處形成有一内縮之撐靠面1 3 3。 請參閱第一圖及第二圖，該二軸承2 〇，係置位於該 旋轉頭主體1 0之軸孔1 3内，並位於孔徑較大之第一孔 中1 3 1中’且其一軸承2 〇並抵接於該撐靠面1 3 3 上，該二轴承2 0並具有一預定之間距^ 請參閱第一圖及第二圖，該轴桿3 〇係置於該旋轉頭 主體1 0之軸孔1 3内，並受該蓋體40封閉該軸孔1 3 M374384 而將該軸桿3 0限位於該軸孔1 3中，且該軸桿3 0受該 二軸承2 0套接，使可作相對該旋轉頭主體之轉動，即當 該旋轉頭主體1 ◦轉動時，該軸桿3 0可受該二轴承2 0 之作用而保持不動。該轴桿3 0之轴心形成有一貫通兩端 之氣孔3 1，該蓋體4 0相對該氣孔3 1之位置處則形成 有一通孔4 1，以保持該軸桿3 0之氣孔3 1、與蓋體4 0之通孔4 1呈連通狀態。 _ 是以，上述即為本創作所提供較佳實施例磨床之旋轉 • 頭結構1 0 0的各部構件及其組裝方式介紹，接著再將本 創作之使用特點介紹如下： 、首先，如第二圖至第五圖所示，該磨床之承載平台9 1上設置有一傳動馬達9 5，該傳動馬達9 5連動有一第 二皮帶輪96，以由一傳動皮帶97連結於該第一皮帶輪 9 4與該第二皮帶輪9 6上，而能由該傳動馬達9 5經由 該第二皮帶輪96、傳動皮帶97、第一皮帶輪94而帶 • 動該旋轉頭主體1 0於該承載平台9 1上進行原地之轉 動。旋轉頭主體1 0之承載轉盤1 1上係鎖設有該真空吸 盤9 3 (如第三圖所示），該真空吸盤9 3可藉由一密封圈 9 8之設置而限定所欲進行真空吸附之範圍（如第四及第 五圖所示，由於該真空吸盤為習知之構件，且非本創作之 重點，容不在此贅述其構造及作動原理）。該軸桿3 0之底 端連接有一氣管99，該氣管99並連通至一真空產生裝 置（圖中未示）上。 M374384 上述即為本創作與磨床其它構件間之組裝關係介紹， 接著再將其使用狀態介紹如下： 當欲進行一工件（圖中未示）之研磨時，則將該工件 置於該真空吸盤9 3上，並於真空吸盤9 3與工件間選用 適當大小之密封圈9 8以將適當之範圍加以封閉以利工件 之吸附，將著便能由真空產生裝置開始作動，以由該氣管 9 9開始產生吸力，並經由該軸桿3 0之氣孔3 1、蓋體 4 0之通孔4 1及真空吸盤9 3之吸孔9 3 1而對密封圈 • 9 8所圍繞之區域内產生真空吸力，而將工件緊緊地吸附 於真空吸盤9 3上，此時該傳動馬達9 5便能開始作動以 、經由帶動該第二皮帶輪96、傳動皮帶97、第一皮帶輪 9 4而使該旋轉頭主體1 0及該真空吸盤9 3進行轉動， 使該工件能隨著該真空吸盤9 3同時轉動以利研磨作業之 進行。 由於與氣管9 9連接之軸桿3 0係受該二轴承2 0之 φ 套置，而能在旋轉頭主體1 0轉動時，該軸桿3 0能位於 原地不被帶動，便能使該氣管9 9不會有被帶動之情形， 使得在研磨之過程中，不僅能保護氣管9 9免受損傷，更 能有助於研磨作業之進行。 以上所揭，僅為本創作的較佳實施方式而已，並非用 以限定本創作實施例的範圍，本技術領域内的一般技術人 員根據本創作所作的均等變化，以及本領域内技術人員熟 知的改變，仍應屬本創作涵蓋的範圍。 M374384 【圖式簡單說明】 第一圖本創作較佳實施例之組合示意圖。 第二圖係第一圖所示實施例設置於磨床之承載平台上 之狀態示意圖。 第三圖係第一圖所示實施例設置於磨床之承載平台上 時之頂視圖。 - 第四圖係一種真空吸盤與密封圈之立體分解圖。 丨 第五圖係一種真空吸盤與密封圈之立體組合圖。 【主要元件符號說明】 磨床之旋轉頭結構1 0 0 旋轉頭主體1◦ 承載轉盤11 連動部1 2 軸孔1 3 第一孔131 第二孔1 3 2 撐靠面1 3 3 軸承2 0 轴桿3 0 氣孔3 1 蓋體4 0 通孔4 1 承載平台9 1 防塵罩體9 2 真空吸盤9 3 吸孔9 3 1 第一皮帶輪9 4 傳動馬達9 5 第二皮帶輪9 6 傳動皮帶9 7 密封圈9 8 氣管9 9M374384 V. New description: [New technical field] This creation is related to the grinding machine, and more specifically refers to the rotary head structure of a grinding machine. [Prior Art] Press, a grinding machine is a processing tool that increases the surface accuracy of a workpiece by rotating the workpiece for grinding. • Since the workpiece to be ground must maintain its surface accuracy, it is not possible to fix the workpiece to the grinding machine by means of clamping. The old grinding machine uses a magnetic magnet to magnetize the workpiece on the rotating head. The method is not suitable for workpieces that cannot be attracted by magnetic force, such as workpieces made of non-metallic materials. Therefore, the current grinding machine has been modified to provide a vacuum chuck on the rotary head to suck the workpiece onto the vacuum chuck by the suction of the gas. However, although this method can be applied to workpieces of various materials, that is, metal or non-golden can be adsorbed, in this way, a gas pipe must be connected to the vacuum chuck to discharge the gas between the workpiece and the vacuum chuck by the gas pipe. In order to form a vacuum between the workpiece and the vacuum chuck, the workpiece can be tightly sucked on the vacuum chuck when the rotary head is rotated, so as to facilitate the grinding operation. However, although the vacuum suction cup can be used for the adsorption of metal and non-metal workpieces, the vacuum suction cup must be connected with the gas pipe to discharge the gas between the workpiece and the vacuum suction cup to generate suction force on the workpiece, but the vacuum suction M374384 disk will follow The rotary head rotates at the same time, so that the movement of the air tube is easily linked by the vacuum suction cup, which causes the air tube to be easily pulled and the air tube to be damaged, broken, or even a dangerous situation in which the suction force is insufficient and the workpiece is thrown out. [New content] In view of this, the main purpose of this creation is to provide a rotary 'rotary head structure of the grinding machine, which can prevent the suction pipe from being driven by the rotating head to reduce the damage of the machine. And to reduce the risk of happening, to facilitate the grinding and 'work smoothly. Therefore, the present invention provides a rotary head structure of a grinding machine, comprising: - a rotating head main system placed on a carrying platform of a grinding machine, which can be rotated by a driving motor, the main body of the rotating head The core position has a shaft hole penetrating the top and bottom; the two bearing system is disposed in the shaft hole; a shaft rod is disposed in the shaft hole and is sleeved by the bearing, so that when the rotating head body rotates, The shaft can be located in the ground without being interlocked, and the shaft is formed with a vent hole in the axial direction, and one end of the vent is connected to a gas pipe, and the gas pipe is connected to a vacuum generating device to generate suction by the vacuum generating device. Through the gas pipe and the air hole, a suction force is generated at the other end of the air hole to adsorb a workpiece. [Embodiment] In order to enable the reviewing committee to have a better understanding and recognition of the features and characteristics of this creation, the following preferred embodiments are listed below with the following description: M374384 Please refer to the figures -5 to 5 The present invention provides a rotary head structure 1〇0 of a grinding machine, which mainly comprises a rotary head main body 10, two bearings 20, a shaft 30 and a cover 4, wherein: In the first and second figures, the rotating head main body i is placed on the carrying platform 9 1 of a grinding machine, and is surrounded by a dust cover body 92 disposed on the carrying platform 9 i. The rotating head main body 1 The top of the cymbal has a load-bearing turntable 11 , and the load-bearing turn 11 is exposed outside the dust cover 92 for locking a vacuum chuck 9 3 . The bottom of the rotary head body 1 has a linkage portion 1 2 . The first pulley 9 is connected to the first pulley 9 to drive the rotating head body to rotate on the bearing platform 91, and the pivot position of the rotating body is at the axial center. Forming a shaft hole 13 penetrating the top and bottom (ie, the The shaft hole penetrates the load-bearing portion of the top position and the linkage portion of the bottom position, and the shaft hole 13 is formed by a first hole 13 1 having a larger aperture and a second hole 1 having a smaller aperture than the first hole 1 3 1 3 2 coaxially connected, the first hole 133 is located above the second hole 133, so that the first hole 133 and the inner wall of the second hole 133 form an inner portion Shrink the support surface 1 3 3. Referring to the first figure and the second figure, the two bearings 2 are disposed in the shaft hole 13 of the rotating head main body 10 and are located in the first hole of the larger aperture 1 1 1 'and one of them The bearing 2 is abutted and abuts against the supporting surface 1 3 3 , and the two bearings 20 have a predetermined distance. Referring to the first figure and the second figure, the shaft 3 is placed on the rotating head body. The shaft hole 1 3 of 10 is closed by the cover 40 and the shaft hole 3 3 M374384 is closed, and the shaft 30 is limited to the shaft hole 13, and the shaft 30 is subjected to the two bearings 20 The sleeve is made rotatable relative to the main body of the rotary head, that is, when the rotary head main body 1 is rotated, the shaft 30 can be held by the action of the two bearings 20. The shaft of the shaft 30 is formed with a hole 3 through the two ends, and a through hole 4 1 is formed at a position of the cover 40 relative to the air hole 3 1 to maintain the air hole 3 1 of the shaft 30 And communicating with the through hole 4 1 of the cover body 40. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ As shown in the fifth to fifth figures, a bearing motor 9 5 is disposed on the bearing platform 9 1 of the grinding machine, and the transmission motor 9 5 is coupled with a second pulley 96 to be coupled to the first pulley 9 by a transmission belt 97. The second pulley 96 can be driven by the transmission motor 95 via the second pulley 96, the transmission belt 97, and the first pulley 94 to move the rotary head body 10 to the carrier platform 9 1 . The rotation of the earth. The vacuum chuck 9 3 (shown in the third figure) is locked on the carrying turntable 1 1 of the rotating head main body 10. The vacuum chuck 9 3 can define the vacuum to be performed by the arrangement of a sealing ring 98. The range of adsorption (as shown in the fourth and fifth figures, since the vacuum chuck is a well-known component and is not the focus of this creation, the structure and actuation principle are not described here). A gas pipe 99 is connected to the bottom end of the shaft 30, and the gas pipe 99 is connected to a vacuum generating device (not shown). M374384 The above is the introduction of the assembly relationship between the creation and other components of the grinder, and then the state of use is described as follows: When grinding a workpiece (not shown), the workpiece is placed on the vacuum chuck 9 3, and a suitable size of the sealing ring 9 8 is selected between the vacuum chuck 9 3 and the workpiece to close the appropriate range to facilitate the adsorption of the workpiece, so that the vacuum generating device can be started to operate by the gas pipe 9 9 The suction is initially generated, and a vacuum is generated in the region surrounded by the seal ring 9 through the air hole 3 1 of the shaft 30, the through hole 4 1 of the cover body 40, and the suction hole 9 3 1 of the vacuum chuck 9 3 . Suction, and the workpiece is tightly adsorbed on the vacuum chuck 91, at which time the transmission motor 95 can be started to drive the second pulley 96, the transmission belt 97, and the first pulley 94. The head main body 10 and the vacuum chuck 9 3 are rotated to allow the workpiece to rotate simultaneously with the vacuum chuck 93 to facilitate the grinding operation. Since the shaft 30 connected to the air pipe 9 is placed by the φ of the two bearings 20, the shaft 30 can be placed in the original position without being driven when the rotating head main body 10 is rotated. The air pipe 9 9 will not be driven, so that not only the air pipe 9 9 can be protected from damage during the grinding process, but also the grinding operation can be facilitated. The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present embodiments, and the equivalent variations made by those skilled in the art according to the present invention, as well as those well known to those skilled in the art. Changes should still be covered by this creation. M374384 [Simple Description of the Drawings] The first figure is a schematic diagram of the combination of the preferred embodiments of the present invention. The second figure is a schematic view showing the state in which the embodiment shown in the first figure is placed on the carrying platform of the grinding machine. The third figure is a top view of the embodiment shown in the first figure when it is placed on the carrying platform of the grinding machine. - The fourth figure is an exploded view of a vacuum chuck and seal.第五 The fifth figure is a three-dimensional combination of a vacuum chuck and a sealing ring. [Description of main component symbols] Rotary head structure of grinding machine 1 0 0 Rotary head main body 1 承载 Bearing turntable 11 Coupling part 1 2 Axle hole 1 3 First hole 131 Second hole 1 3 2 Abutment surface 1 3 3 Bearing 2 0 Axis Rod 3 0 Air hole 3 1 Cover body 4 0 Through hole 4 1 Carrying platform 9 1 Dust cover 9 2 Vacuum cup 9 3 Suction hole 9 3 1 First pulley 9 4 Drive motor 9 5 Second pulley 9 6 Drive belt 9 7 Sealing ring 9 8 trachea 9 9