M317899 八、新型說明： 【新型所屬之技術領域】 本新型是有關於-種預拉保持裝置，特別是指一種適 用於導螺桿進給系統之導螺桿預拉保持裝置。 【先前技術】 邊又工具機之工作平台之轉勤士之θ 卜十口《和動大多X利用導螺桿來達 由於導螺桿之自重及卫作平台之重量，常導致導螺 才干、弯曲而影響加工精度。 參閱圖1，為現有—種適用於—導螺桿進給系統i 拉裝置2，該導螺桿進給系統工包含一包括—預拉端⑴之 導螺桿Η，及二套設於該導螺桿u之軸承12。該預拉裝置 2包括-螺合於該導螺桿n之預拉端⑴的_ η，及一 ^置於該螺帽21與軸承12間之間隔環22。當轉動該螺帽 沿该導螺桿U之-長軸χ方向往該間隔環22移動，並 壓迫該間隔環22與該等軸承12時，可使該螺帽2ι對 螺桿11施以-沿該長軸X方向之拉力而產生預拉之效果， 如此，可避免上述導螺桿U之彎曲問題。但一般導螺桿^ 與工具機之卫作平台（圖未示）間極易因摩擦而 桿η之溫度上升，並沿該長軸χ方向產生—伸長量，= 螺帽η與間隔環22分離’預拉之效果也因而消失，於： 該^螺桿u將因自重與工作平台之重量的影響產、。疋 【新型内容】 因此本新型之—目的，即在提供-種可使導螺桿唯 持一定範圍預拉值之導螺桿預拉保持裝置。 于、、隹 5 M317899 本新型之又一目的， 卩在獒供一種可使軸承保持定位 之v螺桿預拉保持裝置。 & 本新型之再一目的，即在提插 .彎曲之導螺桿預拉保持裝置 料防止導螺桿產生 才曰谁本新型之導螺桿預拉保持裝置是適用於一導螺 糸、、充°亥系統包含-包括-預拉端之導螺桿，及複 數套設於該導螺桿之軸承· 泵，該¥螺柃預拉保持裝置是設置 桿’並包含-螺帽’及—預力儲存件。 該螺帽是螺合於該導螺桿之預拉端。 該預力儲存件是設置於該螺帽與該等軸承間，且該預 =儲存件之其中一端部是與該螺帽相頂抵，其中另一端部 是與該軸承相頂抵。當調整該螺帽沿該導螺桿之一長轴方 〆X預力儲存件罪近時，可壓迫該預力儲存件產生彈性 變形。 當=導螺桿因溫度上升而沿該導螺桿之長軸方向產生 一t長*時’本新型導螺桿預拉料裝置之預力儲存件藉 由彈f生之方式吸收该導螺桿之伸長量，可使該等轴承 相頂抵並保持定位，且該導螺桿亦維持—定範圍之預拉值 ，可避免該導螺桿產生彎曲。 【實施方式】 有關本新型之别述及其他技術内容、特點與功效，在 以下配合參考圖式之—較佳實施例的詳細說明中，將可清 楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 M317899 明内容中，類似的元件是以相同的編號來表示。 參閱圖2、3、4,本新型導螺桿預拉保持裝置3之 實施例是適用於—導螺桿進給系統4，該系統4包含一包括 一預拉端411之導螺桿41、複數套設於該導螺桿41之軸承 -用以驅動該導螺桿41之馬達43,及—由該導螺桿 41帶動之卫作平台44;該導螺桿預拉保持裝置3是設置於 該導螺桿41，並包含—螺合於該導螺桿41之預拉端4ιι的M317899 VIII. New description: [New technical field] The present invention relates to a pre-tensioning holding device, in particular to a lead screw pre-tensioning device suitable for a lead screw feeding system. [Prior Art] On the side of the working platform of the machine tool, the θ of the shifting machine _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Affect the processing accuracy. Referring to Figure 1, there is a prior art application for a lead screw feed system i-drawing device 2, the lead screw feed system includes a lead screw 包括 including a pre-tensioned end (1), and two sets of the lead screw u Bearing 12. The pretensioning device 2 includes - η η screwed to the pretensioned end (1) of the lead screw n, and a spacer ring 22 interposed between the nut 21 and the bearing 12. When the nut is rotated to move the spacer ring 22 in the direction of the long axis of the lead screw U, and the spacer ring 22 and the bearings 12 are pressed, the nut 2 1 can be applied to the screw 11 along the The pulling force of the long axis in the X direction produces a pre-tensioning effect, so that the bending problem of the lead screw U described above can be avoided. However, the temperature between the general lead screw and the machine tool platform (not shown) is easily increased due to friction and the temperature of the rod η is increased, and the elongation is generated along the long axis, and the nut η is separated from the spacer ring 22 'The effect of pre-drawing also disappears, so: The screw u will be produced due to the weight of its own weight and the weight of the work platform.疋 【New content】 Therefore, the purpose of this new type is to provide a lead screw pre-tensioning device that can hold the lead screw only for a certain range of pre-tension values.于, 隹 5 M317899 Another object of the present invention is to provide a v-screw pretensioning retaining device that maintains the bearing in position. & A further object of the present invention is to prevent the lead screw from being generated by the pre-tensioning and holding device of the lead screw which is bent. The new type of lead screw pre-tensioning device of the lead screw is suitable for a guide screw, and is charged. The Hai system includes a lead screw including a pre-tensioned end, and a plurality of bearings and pumps disposed on the lead screw, the snail pre-tensioning holding device is a set rod 'and includes a nut and a pre-loading member . The nut is screwed to the pre-tensioned end of the lead screw. The pre-load storage member is disposed between the nut and the bearings, and one end of the pre-storage member abuts against the nut, and the other end portion abuts against the bearing. When the nut is adjusted to be close to the longitudinal axis of the lead screw, the pre-loading member can be elastically deformed. When the = lead screw generates a length of * in the direction of the long axis of the lead screw due to the temperature rise, the pre-loading member of the novel lead screw pre-pulling device absorbs the elongation of the lead screw by means of the bomb The bearings can be abutted and maintained in position, and the lead screw also maintains a predetermined range of pre-tension values to avoid bending of the lead screw. The present invention will be clearly described in the following detailed description of the preferred embodiments with reference to the drawings. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 2, 3 and 4, the embodiment of the novel lead screw pretensioning holding device 3 is suitable for a lead screw feeding system 4, the system 4 comprising a lead screw 41 including a pretensioning end 411, and a plurality of sets a bearing 43 for driving the lead screw 41, a motor 43 for driving the lead screw 41, and a servo platform 44 driven by the lead screw 41; the lead screw pretensioning holding device 3 is disposed on the lead screw 41, and Including - screwed to the pre-pull end 4 of the lead screw 41
螺帽3卜-預力儲存件32、二間隔環％，及—使該螺帽 31固定於該導螺桿w之定位件34。 該預力儲存件32是套設於該導螺桿41，且設置於該螺 巾a 31與該等軸承42間。值得說明的是，該預力儲存件^ 可為碟料簣片或螺旋彈簧，在本實_巾，該預力儲存 件32為碟形彈簧片。 “ ’間隔環33之其中一間隔環33是位於該螺帽盥 該預力儲存件32間，其中另-間隔環33是位於該預力儲 存件32與該軸承42 Μ，且料間隔環33分別頂抵於該預 力儲存件32沿—長軸Υ方向之兩相背端部。 該導螺桿預拉保持裝置3於組裝時，依序將該間隔環 33、該預力儲存件32，與該間隔環33套設於該導螺桿η ，再調整該螺帽31沿該導螺桿41之長軸γ方向往該預力 儲存件32螺進，經由該間隔環33壓縮該預力儲存件32產 生變形’同時，與該軸承42相鄰之間隔環33因該預力儲 存件32之壓迫而與姉承42相職，如此，該預力儲存 件32是對該導螺桿41施以-沿該長轴Υ方向之作用力而 7 M317899 產生預拉之效果，可避免該導 -與-置放於該工作平台44上:之因自重、該工作平台 彎曲。 乍十口 44上方之加工件5的重量而產生 田^導螺桿41與卫作平台44間因摩擦而使得該導螺 :之:度上升時，該導螺…該長轴γ方向產生一 =里：，該預力儲存件32因該伸長量之產生 長軸Υ方向彈性變形，作仍 兮耸舳m 間隔環33相頂抵，因此 ==上升前之位置，且該預力儲存件— 塑加工"預拉之效果，使該導螺桿41不致彎曲而影 Γ:Γ:二得說明的是，該預力儲存…對該導螺 七_ “皿又上升時仍保有預拉效果所需之預拉值，即該預 大=存ΐ先32對5亥導螺桿41沿該長轴γ方向所施之作用力 量而計算得導，41..受溫度上升時所能容許之伸長 于 此’當該導螺桿41受熱膨脹所產生之伸 長Ϊ小於或等於該導螺士曰 甲 、于 所能容許之伸長量時，該預力 …有預拉之效果，即該預力： ν螺桿41保持-定範圍之預拉值。 值仔说明的是’在—變化例中，該等間隔環33為非必 要”力《存件32沿該長轴 部 別與雜承:2_帽31相頂抵，同樣可達到上刀 F ή i本新料螺桿預⑽持裝置3之?貞力儲存 件仏在該導螺桿41因溫度上升而沿該導螺桿 Y方向產生伸長量時，藉由彈性變形之方式吸收該導螺桿 M317899 之伸長畺，可使該等軸承42相頂抵並保持定位，且該導 螺才干41亦維持一定範圍之預拉值，可避免該導螺桿w產 生考曲’故確實能達到本新型之目的。 惟以上所述者，僅為本新型之較佳實施例而已，當不 月b以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是習知一預拉裝置之局部剖面圖； 圖2是一局部剖面圖，說明本新型之一較佳實施例之 構造； 圖3是一局部剖面圖，說明本新型應用於一導螺桿進 給系統之情形；及 圖4是一剖面示意圖，說明一預力儲存件與一間隔環 於一導螺桿溫度上升時之位置變化。 M317899 【主要元件符號說明】 3 ..........導螺桿預拉保持 裝置 31 .........螺帽 32 .........預力儲存件 33 .........間隔環 34 .........定位件 4 ..........導螺桿進給系統 41 .........導螺桿 411 .......預拉端 42 .........轴承 43 .........馬達 44 .........工作平台 5 ..........加工件 Y..........長軸The nut 3 - the pre-loading member 32, the two spacer rings %, and - the nut 31 are fixed to the positioning member 34 of the lead screw w. The preload storage member 32 is sleeved on the lead screw 41 and disposed between the screw a 31 and the bearings 42. It should be noted that the pre-load storage member ^ may be a disc or a coil spring. In the present embodiment, the pre-load storage member 32 is a disc spring piece. "One of the spacer rings 33 is located between the nut 盥 the pre-load storage member 32, wherein the other-spacer ring 33 is located at the pre-load storage member 32 and the bearing 42 Μ, and the spacer ring 33 The two axial end portions of the pre-load storage member 32 in the direction of the long axis are respectively respectively abutted. The lead screw pre-tensioning holding device 3 sequentially assembles the spacer ring 33 and the pre-load storage member 32. And the spacer ring 33 is sleeved on the lead screw η, and the nut 31 is further adjusted to the pre-load storage member 32 along the longitudinal axis γ direction of the lead screw 41, and the pre-load storage member is compressed via the spacer ring 33. 32 is deformed'. At the same time, the spacer ring 33 adjacent to the bearing 42 is engaged with the bearing 42 by the compression of the pre-load storage member 32. Thus, the pre-load storage member 32 applies the lead screw 41 to - The force along the long axis 而7 M317899 produces a pre-pull effect, which prevents the guide-and-place from being placed on the work platform 44: the self-weight, the work platform is bent. The weight of the piece 5 causes the friction between the screw 41 and the guard platform 44 to cause the guide screw: when the degree rises, the The snail ... produces a y direction in the long axis γ: the pre-load storage member 32 is elastically deformed in the direction of the long axis due to the elongation, so that the spacer ring 33 is still abutted, so == before the rise The position, and the pre-load storage member - plastic processing & "pre-tension effect, so that the lead screw 41 does not bend and affect: Γ: two to explain that the pre-load storage ... the guide screw seven _ " When the dish rises again, it still retains the pre-tension value required for the pre-tensioning effect, that is, the pre-largeness = the first action of 32 pairs of 5 hai lead screw 41 along the long axis γ direction is calculated, 41. The elongation which can be tolerated when the temperature rises is 'when the elongation Ϊ generated by the thermal expansion of the lead screw 41 is less than or equal to the elongation of the guide screw armor, the pre-tension is pre-tensioned. The effect, that is, the pre-force: ν screw 41 maintains a predetermined range of pre-tension values. The value indicates that in the "variation", the spacer ring 33 is not necessary. "The storage member 32 is offset along the long axis portion and the miscellaneous bearing: 2_cap 31, and the upper blade F can also be achieved. ή i The new material screw pre- (10) holding device 3 of the force storage member 吸收 when the lead screw 41 is elongated in the direction of the lead screw Y due to temperature rise, the lead screw M317899 is absorbed by elastic deformation The extension 畺 can make the bearings 42 abut against each other and maintain the positioning, and the guide screw 41 also maintains a certain range of pre-tension values, which can prevent the lead screw w from producing a test piece, so that the purpose of the present invention can be achieved. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is limited by this, that is, the simple equivalent change of the patent application scope and the new description content of the present invention is The modification is still within the scope of the present patent. [Fig. 1 is a partial cross-sectional view of a conventional pre-tensioning device; Figure 2 is a partial cross-sectional view showing a preferred embodiment of the present invention Figure 3 is a partial cross-sectional view illustrating The present invention is applied to a lead screw feeding system; and Fig. 4 is a schematic cross-sectional view showing the positional change of a pre-loading member and a spacer ring when a lead screw rises in temperature. M317899 [Main component symbol description] 3 .......... lead screw pre-tensioning holding device 31 ......... nut 32 ......... pre-loading member 33 .... .. spacer ring 34 ......... positioning member 4 .......... lead screw feeding system 41 ... ... lead screw 411 ..... .. pre-pull end 42 ......... bearing 43 ... ... motor 44 ... ... work platform 5 .......... Machining part Y..........long axis
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