M441055 五、新型-說明： 【新型所屬之技術領域】 本新型是有關於一種線性滑軌，特別是指一種可提高 兩倍使用壽命的線性滑軌。 【先前技術】 參閱圖1，一種習知線性滑軌2〇具有一導執21、一滑 塊22及多數個滾珠23，該滑塊22下方處凹設有一供導軌 21套合的凹槽221，該導軌21在頂面及兩側邊處分別凹設 有數個滾動槽211，滑塊22内部在對應每一滚動槽211相 鄰位置處各凹設有一循環孔222,使多數顆滾珠23置入滾 動槽211内，再進入相對應的循環孔222内以構成循環，如 此該α塊22便可在導執21上自由移動。此種線性滑執2〇 的優點是在導轨21頂面處裝設有滾珠23做為支撐元件， 月t有效承文來自滑塊22上方的壓力，然而其缺點是採用滾 珠23做點接觸的關係，滾珠23與滾動槽211的接觸面容易 因受力而造成磨損，使用壽命並不長久。 參閱圖2，另一種習知線性滑轨3〇具有一導軌31、一 滑塊32及多數個滾柱33，滑塊32滑設在導轨31上可做線 眭移動，滑塊32兩側邊處各設有二滾動槽，滑塊内 部在對應二滾動槽321側邊處凹設有二循環孔322，滾柱 33置入滾動槽321後，再進入相對應的循環孔322内形成 楯環，藉此可讓滑塊32達到順暢移動的效果。此種線性滑 執30的優點在於利用滾柱33做為滾動元件，滾柱33的承 载能力較滾珠強，能有效承受機台的大重量，使用壽命也 3 M441055 較長。惟，其使用上仍有不足之處，一般線性滑軌3〇在經 過長時間使用，或是機台有撞車或遭遇其他大力撞擊事故 ，就會讓滚柱33與滾動槽321的接觸線p產生磨耗，—旦 滾動槽321槽面有磨損現象發生時，整部機台的精度就會 產生嚴重誤差，使用者只有將整個線性滑軌3〇拆除更換， ^重新校正精度，相當耗費時間及成本，更嚴重者整部機 台就從此報廢，因此如何能延長線性滑軌3〇的使用壽命， 一直是業者想要解決的課題。 【新型内容】 因此，本新型目的在於提供一種能加倍延長使用壽命 效果的線性滑執。 於疋，本新型提供一種可提高兩倍使用壽命的線性滑 軌，。包含有一導軌、一滑塊、一凸型滾柱單元及一凹型滾 柱單元，其中：該導軌兩側邊處各設有一作用邊，每個作 用邊至少凹设有一個滾柱凹槽，該滾柱凹槽内壁界定出有 一第一接觸軌跡面、及二個位於第一接觸執跡面上下兩處 的第二接觸軌跡面；該滑塊滑動設置在導軌上，其下方處 凹設有一供導執套入的滑槽，該滑槽兩側内壁各具有一相 對於導軌作用邊的内側作用邊，每個内側作用邊上下凹設 有一個與導轨滾柱凹槽相對應的滾柱凹槽，每個滾柱凹槽 同樣界定出有一第一接觸軌跡面、及二個位於第一接觸軌 跡面上下兩處的第二接觸執跡面，滑塊側邊内部對應滾柱 凹槽的鄰近位置處凹設有一循環孔；凸型滾柱單元包括多 數個置入於滾柱凹槽及循環孔内構成循環的凸型滾柱，凸 4 出—個中間接觸部位、以及二個位於w 2雜兩側處的非接觸部位4間接觸部位的圓徑大於 2接觸部位的圓徑，該中間接觸部位與上述滾柱凹槽的第 接觸軌跡面相接觸，非接觸部位與上述滾柱凹槽的第二 接觸軌跡面相離形成有一微小間隙；凹型滾柱單元包括多 數個置入於滾柱凹槽及循環孔内構成循環的凹型滾柱，凹 型滾柱外周界定出有一個中間非接觸部位、以及二個位於 中間非接觸部位兩側處的接觸部位，中間非接觸部位的圓 輕小於接觸部位的3]徑，中間非接觸部位與上述滾柱凹槽 的第-接觸軌跡面相離形成有一微小間隙，該接觸部位盥 上述滾柱凹槽的第二接觸軌跡面相接觸；藉由上述導軌與 滑塊的組合，導執第一次配置滑塊時，使用者可選擇上述 凸型滾柱或凹型滾柱其中一組置入滑塊内，與導執其中一 接觸軌跡面作接觸，當導執使用中的接觸軌跡面產生磨損 時，該導軌可做第二次配置滑塊，選擇與前次配置相反型 式的滾柱置入滑塊内，使更換後的滾柱與導軌未受磨損的 接觸軌跡面作接觸，藉此達到提高兩倍壽命的使用效果。 本新型的有益效果在於.該導執可前後二次配置使用 滑塊，滑塊第一次選擇凸型滾柱或凹型滾柱置入，使導執 可正常使用到一定壽命，當導軌一旦發生磨損時，導軌可 第二次配置滑塊’讓滑塊置入與前次相反型式的滾柱與導 軌未磨損的接觸軌跡面作接觸，該導執便可繼續正常使用 ’藉此達到加倍延長使用壽命的效果。 【實施方式】 M441055 有關本新型之前述及其他技術内容、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巾，將可清 楚的呈現。 β 參閱圖3、圖4所示，本新型可提高兩倍使用壽命的線 性滑執’主要包含有_導執4〇、一滑塊5〇、一凸型滾柱單 7L 60及-凹型滚柱單元7G ’接著，再將上述各構件的形狀 構造及組合空間型態詳述於后。 該導軌40兩側邊處各設有一作用邊41，每個作用邊 41上凹設有一個滾柱凹槽42，該滾柱凹槽42内壁包括二 個供凸型滾柱單元6〇或凹魏柱單元70滾壓接觸的斜面 ’每個斜面各界定出有一第一接觸執跡面421、及二個相鄰 在第一接觸執跡面421上下兩處的第二接觸軌跡面422，而 且在第一接觸執跡面421與第二接觸執跡面422兩者中間 位置上凹設有二條分斷溝423，二分斷溝423的作用是當其 中一接觸執跡面421(422)在受到凸型滾柱單元6〇或凹型滾 柱單元70滾壓下產生毛邊時，藉由分斷溝4S3的設置可分 隔阻斷毛邊影響到另一個接觸執跡面422(421)。 同時參閱圖9，該滑塊50滑動設置在導軌4〇上，其下 方處凹設有一供導軌40套入的滑槽51，該滑槽51兩側内 壁各具有一相對於導軌40作用邊41的内側作用邊52，每 個内側作用邊52上凹設有二個滾柱凹槽53，每個滾柱凹槽 53同等於該導軌4〇斜面的形狀設計，在滾柱凹槽53内壁 面上同樣界定出有一第一接觸軌跡面531、二個第二接觸執 跡面532且設有二條分斷溝533，導軌4〇與滑塊5〇的滾柱 6 凹槽42、53彼此相對’該滑塊5〇側邊内部鄰近對應每個 滾柱凹槽53的斜對角位置處各凹設有-循環孔54。 同時參閱圖4、圖5及圖7’凸型滾柱單元6〇包括多 數個置入於滾柱凹槽42、53及循環孔54内構賴環的凸 型滾柱6卜凸型滾柱61的外周界定出一個中間接觸部位 61卜以及二個位於中間接觸部纟611兩側處的非接觸部位 612 ’中間接觸部位611的圓徑大於非接觸部位612的圓徑 :在本實施例中’中間接觸部位611與滾柱凹槽42、53的 第-接觸執跡面42卜531相接觸，非接觸部位612是呈圓 錐柱面形狀，與滾柱凹槽42、53的第二接觸軌跡面似、 532相離形成有一微小間隙(1〇(見於圖9)，藉此讓第二接 觸軌跡面422、532保持在未接觸狀態。 同時參閱圖4、® 6及圖8,凹型滾柱單元7〇包括多 數個置入於滾柱凹槽42、53及循環孔54内構成循環的凹 型滾柱Π，凹型滾柱71的外周界定出有—個中間非接觸部 位71卜以及二個位於中間非接觸部位m兩側處的接觸部 位712，中間非接觸部位711的圓徑小於接觸部位712的圓 控’甲間非接觸部位711與滾柱凹槽42、53的第一接觸軌 跡面421、531相離形成有一微小間隙（瓜）（見於圖9)，藉 此讓第-接觸軌跡面42卜531保持在未接觸狀態，而二^ 邊的接觸部位712則與滾柱凹槽42、53的第二接觸軌跡面 422、532相接觸。 以上即為本新型可提高兩倍使用壽命的線性滑軌構件 形狀的概述，接著，再將本新型的動作及功效詳述如后·· w參閲圖9，當導轨4〇在第一次配置滑塊50時，凸型滾 柱單元60的凸型滾柱61置入於上方滚柱凹槽42、内， 凹型滾柱單元7〇的凹型滾柱71置人於下方滾柱凹槽 53内，此時凸型滾柱61的中間接觸部位η〗與上方滾柱凹 槽42、53的第-接觸軌跡面42卜531相接觸，並且保持 第二接觸軌跡面422、532在未接觸狀態，而凹型滾柱71 的接觸。p位712與下方滾柱凹槽42、53的第二接觸軌跡面 422、532相接觸，並且保持第一接觸軌跡面42ι ' 53ι在未 接觸狀態，如此該滑塊5Q借助凸型滾柱61、凹型滾柱W 的滾動循環下，可正常順利地沿著導軌4Q進行線性移動。 參閱圖ίο,當線性滑軌使用一段時間後，滾柱凹槽42 53與凸型滾柱6卜凹型滾柱71接觸的^面會有磨損情 形發生’此時使用者可對導軌4〇進行第二次配置滑塊、5〇 的動作，將上方滾柱凹槽42、53所有的凸型滾柱Η全數 換新並改成凹型滾柱71 .置入，而下方滾柱凹才曹所 有的凹型滾柱71則全數換新改成凸型滾柱61置入如此 換新後的凹型滾柱71可在未受磨損的第二接觸軌跡面422籲 、532接觸’換新後的凸型滾柱61可在未受磨損的第一接 觸軌跡面421、531接觸，使滑塊5〇與導軌4〇可繼續正常 使用，藉此達到提高兩倍使用壽命的效果。 當然’業者也可反其道特，料軌4()第—次配置滑 塊5〇時’可將凹型滚柱71裝設在上方滾柱凹槽42、53内 ’凸型滚柱61裝設在下方滾柱凹槽42、53内，如圖所 不’等到導軌40要進行第二次配置滑塊5〇時原先的凸 型滾柱61及凹型滾柱 61裝設在上方滾柱凹槽 裝設在下方滾柱凹槽42 延長使用壽命的效果。 71全數_，讓換新後的凸型滾权 42 53内，換新後的凹型滾柱71 53内’如圖9所示，同樣可達到 參閱圖11，本新型在第一次配 » ·典仏月现Μ打，導軌4〇 及4塊50的上下二個滾柱凹槽 馆以、53可同時選擇裝今相 同型式的凸型滾柱6卜等到要進 裒叹相 士 丁罘一夂配置滑塊50作業 知’上下二個滾柱凹槽42、53内可同時改採用凹型滾柱;; 置入’如圖12所示，當然業者也可採用與上述相反的更換 手段，同樣也可達到提高兩倍使用壽命的效果。 值得-提的是，如果業者覺得凸型滾柱61、凹型滾柱 Π要從滑塊5G内部移除的拆換作業麻煩，業者也可以選擇 將整個滑塊5◦連同所有凸型滚柱61、凹型滾柱7ι整組全 部換新。 曰知上所述，本新型可提高^倍使料命的線性滑執主 要是為了改良習知線性滑執使用壽命較短的缺失，本新型 主要的技術手段是使用兩種不同型式規格的凸型滾柱Μ及 凹^滚柱71 ’凸型滚柱61外周設有圓徑大小不同的中間接 觸部位611及非接觸部位612 ’凹型滾柱71外周設有與凸 型滾柱61相反設置的中間非接觸部位711及接觸部位712 ，該導執40與滑塊50的滾柱凹槽42、53壁面界定有第一 接觸執跡面421、531及第二接觸軌跡面422、532，當選擇 以凸型滾柱61置入滾柱凹槽42、53時，凸型滾柱61會與 第一接觸軌跡面421、531接觸並保持第二接觸軌跡面422 M441055 、532在未接觸狀態，當選擇以凹型滾柱71置入滾柱凹槽 42、53時，凹型滾柱71會與第二接觸軌跡面422、532接 觸並保持第一接觸軌跡面421、531在未接觸狀態利用上 述滾柱61、71的結構特性，首次使用其中一組滾柱單元 6〇(7〇)與其中一接觸轨跡面421、531 (422、532)作接觸， 如此該滑塊50可順利地在導執4〇上正常移動，當該接觸 軌跡面421、531(422、532)產生磨損後，只要改採用另一 組滾柱單元70(60)對另一接觸軌跡面422、532(421、531) 作接觸’另一組滚柱單A 7〇⑽）會避開已受損的接觸軌跡鲁 面，而在全新完整的接觸執跡面上進行滾動，藉此達到加 倍延長使用壽命的效果。藉由上述的技術手段，本新型線 月執與習知線性滑執做一比較’本新型讓線性滑軌可提 冋兩倍的使用哥命，尤其線性滑執被廣泛應用在航太工業 、汽車工業、金屬加工機及其他產業機械上，本新型讓該 等機械的使用年限更為長久，對於機械工業界有極重大的 幫助，且本新型導軌4〇在有磨損的狀態下，只需改換置入 不冋型式的滾柱61(71)即可，不需如習知線性滑軌需要整籲 ^除更換並重新校正，因此本新型的更換作業更為快速 間早且方便，並且能有效節省導軌鋼材的成本。 惟以上所述者，僅為本新型之一較佳實施例而已，當 不能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】 10 圖1是一種習知線性滑軌的組合剖視圖； 圖2疋另一種習知線性滑軌的組合剖視圖； —圖3是本新型可提高兩倍使用壽命的線性滑執一較佳 實施例的立體剖視圖，說明本新型包含有一導軌、一滑塊 、一凸型滾柱單元及一凹型滾柱單元； 圖4疋上述較佳實施例的組合剖視圖，說明該導執與 滑塊之間設有滾柱凹槽，以供凸型滾柱單元及凹型滾桎單 元置入的情形； 圖5瓦上述較佳實施例的立體放大圖，說明該導軌滾 柱凹槽與凸型滾柱單元配合的情形； 圖6疋上述較佳實施例的立體放大圖，說明該導執滾 柱凹槽與凹型滾柱單元配合的情形； 。圖7疋上述較佳實施例的放大示意圖，說明凸型滾柱 單元的凸型滾柱的形狀； 圖8是上述較佳實施例的放大示意圖，說明凹型滾柱 單元的凹型滾柱的形狀； 圖9疋上述較佳實施例的放大示意圖，說明凸型滾柱 單元、凹型滾柱單元在滾柱凹槽内接觸的情形； 圖10是上述較佳實施例的動作示意圖，說明滾柱凹槽 壁面磨損後，可更換置入不同滾柱單元的情形； 曰 圖11疋上述較佳實施例的組合示意圖，說明滾柱凹槽 内可同時置入兩組凸型滾柱單元的情形；及 圖12疋上述較佳實施例的動作示意圖，說明該滾柱凹 槽内可更換置入兩組凹型滾柱單元的情形。 M441055 【主要元件符號說明】 40·.··· •…導執 532… …·第二接觸軌跡面 41 ·.·.· •…作用邊 533… •…分斷溝 42·..·· •…滾柱凹槽 54…… •…循環孔 421… •…第一接觸軌跡面 60…… •…凸型滚柱單元 422… •…第二接觸轨跡面 61…… …·凸型滚柱 423… •…分斷溝 611 ·· …中間接觸部位 50…… •…滑塊 612 ·... …·非接觸部位 51…… …·滑槽 70…… …凹型滚柱單元 52…… •…内側作用邊 71…… …·凹型滚柱 53…… •…滾柱凹槽 711 ··.. •…中間非接觸部位 531 ··.. …·第一接觸轨跡面 712 .… …接觸部位 12M441055 V. New-Description: [New technical field] The new type relates to a linear slide, especially a linear slide that can increase the service life by twice. [Prior Art] Referring to FIG. 1, a conventional linear slide 2 has a guide 21, a slider 22 and a plurality of balls 23, and a recess 221 for guiding the guide rail 21 is recessed below the slider 22. The guide rails 21 are respectively recessed with a plurality of rolling grooves 211 at the top surface and the two side edges. The inside of the slider 22 is recessed with a circulation hole 222 at a position adjacent to each of the rolling grooves 211, so that the plurality of balls 23 are provided. It is placed in the rolling groove 211 and then enters the corresponding circulation hole 222 to constitute a loop, so that the α block 22 can freely move on the guide 21. The advantage of such a linear slide 2 is that a ball 23 is mounted on the top surface of the guide rail 21 as a supporting member, and the effective bearing is from the pressure above the slider 22, but the disadvantage is that the ball 23 is used for point contact. In the relationship, the contact surface of the ball 23 and the rolling groove 211 is easily worn by the force, and the service life is not long. Referring to FIG. 2, another conventional linear slide rail 3 has a guide rail 31, a slider 32 and a plurality of rollers 33. The slider 32 is slidably disposed on the guide rail 31 for movement of the coil, and both sides of the slider 32 Two rolling grooves are respectively arranged at the sides, and two circulating holes 322 are recessed in the inner side of the corresponding two rolling grooves 321 inside the slider, and the roller 33 is placed in the rolling groove 321 and then enters the corresponding circulating hole 322 to form a crucible. The ring, thereby allowing the slider 32 to achieve a smooth movement effect. The advantage of such a linear slide 30 is that the roller 33 is used as a rolling element, and the roller 33 has a higher load bearing capacity than the ball, and can effectively withstand the large weight of the machine, and the service life is also 3 M441055. However, there are still some inadequacies in its use. Generally, the linear slide rail 3 is used for a long time, or the machine has a collision or other strong impact accident, and the contact line between the roller 33 and the rolling groove 321 is p. Wear occurs. If there is wear on the groove surface of the rolling groove 321 , the accuracy of the whole machine will cause serious error. The user only removes and replaces the entire linear slide 3 , and recalibrates the accuracy, which is quite time consuming and Cost, more serious, the entire machine will be scrapped from here, so how to extend the service life of the linear slide 3 一直 has always been the subject of the industry. [New content] Therefore, the purpose of the present invention is to provide a linear slipper that can double the effect of extending the service life. Yu Wei, this new model provides a linear slide that can double the service life. The utility model comprises a guide rail, a slider, a convex roller unit and a concave roller unit, wherein: the two sides of the rail are respectively provided with an active edge, and each of the active edges is recessed at least with a roller groove, The inner wall of the roller groove defines a first contact track surface and two second contact track faces located at two places on the first contact track surface; the slider is slidably disposed on the guide rail, and a lower portion is provided with a recess a guide slot that is inserted into the guide, the inner walls of the two sides of the slide have an inner side acting edge with respect to the action side of the guide rail, and each inner side edge has a roller recess corresponding to the guide roller groove a groove, each roller groove also defining a first contact track surface and two second contact track faces located at two places on the first contact track surface, and the inside of the slider side corresponds to the adjacent groove groove The position is concavely provided with a circulation hole; the convex roller unit comprises a plurality of convex rollers which are placed in the groove of the roller and the circulation hole to form a circulation, the convex 4 is an intermediate contact portion, and the two are located at w 2 Non-contact area 4 contact at both sides of the impurity The circular diameter of the position is larger than the circular diameter of the contact portion, the intermediate contact portion is in contact with the contact track surface of the roller groove, and the non-contact portion is separated from the second contact track surface of the roller groove to form a slight gap; The concave roller unit comprises a plurality of concave rollers which are placed in the groove of the roller and the circulation hole to form a circulation. The outer circumference of the concave roller defines an intermediate non-contact portion and two sides at two sides of the intermediate non-contact portion. In the contact portion, the circular non-contact portion is smaller than the 3] diameter of the contact portion, and the intermediate non-contact portion is separated from the first contact track surface of the roller groove to form a minute gap, and the contact portion is in the roller groove The second contact track surface is in contact; by the combination of the above-mentioned guide rail and the slider, when the guide arranges the slider for the first time, the user can select one of the convex roller or the concave roller to be placed in the slider, and One of the guides touches the track surface for contact, and when the contact track surface of the guide is worn, the guide rail can be configured for the second time, and the selection is opposite to the previous configuration. The roller is placed in the slider so that the replaced roller is in contact with the untouched contact track surface of the guide rail, thereby achieving a double life effect. The utility model has the beneficial effects that the guide can be used in the front and rear secondary configuration, and the slider firstly selects the convex roller or the concave roller to be placed, so that the guide can be normally used to a certain life, when the guide rail occurs once When worn, the guide rail can be configured for the second time. The slider is placed in contact with the previously opposite type of roller and the contact track surface of the guide rail that is not worn. The guide can continue to be used normally. The effect of the service life. [Embodiment] M441055 The above-mentioned and other technical contents, features and effects of the present invention will be clearly described below with reference to the detailed description of the preferred embodiments. β As shown in Fig. 3 and Fig. 4, the linear stroke of the present invention which can improve the service life twice mainly includes _guide 4 〇, a slider 5 〇, a convex roller single 7L 60 and a concave roller Column unit 7G' Next, the shape structure and the combined space type of each of the above members will be described in detail later. Each of the two sides of the guide rail 40 is provided with an action edge 41. Each of the action edges 41 is recessed with a roller groove 42. The inner wall of the roller groove 42 includes two convex roller units 6 or concave. Each of the inclined surfaces defines a first contact tracking surface 421 and two second contact track surfaces 422 adjacent to the upper and lower sides of the first contact tracking surface 421, and Two branching grooves 423 are recessed at a position intermediate the first contact tracking surface 421 and the second contact tracking surface 422. The function of the two-divided groove 423 is when one of the contact tracking surfaces 421 (422) is subjected to When the convex roller unit 6〇 or the concave roller unit 70 is rolled to generate a burr, the partitioning of the breaking groove 4S3 can separate the blocking burr from the other contact tracking surface 422 (421). Referring to FIG. 9 , the slider 50 is slidably disposed on the guide rail 4 , and a sliding slot 51 for inserting the guide rail 40 is recessed at a lower portion thereof. The inner walls of the two sides of the sliding slot 51 each have an edge 41 opposite to the guide rail 40 . The inner side action edge 52 is recessed with two roller grooves 53 on each inner side action edge 52. Each roller groove 53 is designed in the same shape as the bevel surface of the guide rail 4, and is in the inner wall surface of the roller groove 53. Also defined above is a first contact track surface 531, two second contact track faces 532 and two split trenches 533, the guide rails 4 and the sliders 6 of the sliders 6 recesses 42, 53 opposite each other' The inner side of the slider 5 邻近 is recessed with a circulation hole 54 at a diagonally opposite position corresponding to each of the roller grooves 53. Referring to FIG. 4, FIG. 5 and FIG. 7 respectively, the convex roller unit 6 〇 includes a plurality of convex rollers 6 convex rollers which are placed in the roller grooves 42 and 53 and the circulation holes 54. The outer circumference of 61 defines an intermediate contact portion 61 and two non-contact portions 612 at both sides of the intermediate contact portion 611. The circular diameter of the intermediate contact portion 611 is larger than the circular diameter of the non-contact portion 612: in this embodiment The intermediate contact portion 611 is in contact with the first contact tracking surface 42 531 of the roller grooves 42, 53, and the non-contact portion 612 is in the shape of a conical cylinder, and the second contact trajectory with the roller grooves 42, 53 Face-to-face, 532 is separated by a slight gap (1〇 (see Figure 9), thereby keeping the second contact track faces 422, 532 in an untouched state. See also Figures 4, 6 and 8, concave rollers The unit 7A includes a plurality of concave rollers 置 which are placed in the roller grooves 42, 53 and the circulation holes 54 to form a circulation. The outer circumference of the concave roller 71 defines an intermediate non-contact portion 71 and two The contact portion 712 at both sides of the intermediate non-contact portion m, the circular diameter of the intermediate non-contact portion 711 is smaller than The circular control 'inter-contact point 711 of the contact portion 712 is separated from the first contact track faces 421, 531 of the roller grooves 42, 53 to form a minute gap (see Fig. 9), thereby allowing the first - The contact track surface 42 531 remains in the uncontacted state, and the contact portions 712 of the two sides are in contact with the second contact track faces 422, 532 of the roller grooves 42, 53. An overview of the shape of the linear slide member for the service life. Next, the action and function of the present invention will be described in detail as follows. Referring to FIG. 9, when the guide rail 4 is configured for the first time, the slider 50 is convex. The convex roller 61 of the roller unit 60 is placed in the upper roller groove 42, and the concave roller 71 of the concave roller unit 7 is placed in the lower roller groove 53, at this time, the convex roller The intermediate contact portion η of 61 is in contact with the first contact track surface 42 531 of the upper roller grooves 42, 53 and keeps the second contact track faces 422, 532 in an uncontacted state, and the contact of the concave roller 71 The p-bit 712 is in contact with the second contact track faces 422, 532 of the lower roller grooves 42, 53 and remains first The track surface 42ι '53ι is in an untouched state, so that the slider 5Q can smoothly move smoothly along the guide rail 4Q by the rolling cycle of the convex roller 61 and the concave roller W. Referring to the figure, when linearly sliding After the rail is used for a period of time, the surface of the roller groove 42 53 that is in contact with the convex roller 6 and the concave roller 71 may be worn. At this time, the user can perform the second configuration of the slider on the guide rail 4 5 〇 action, all the convex roller Η of the upper roller groove 42, 53 is replaced by a new one and changed into a concave roller 71. The lower roller is concave and all the concave rollers 71 are all The newly replaced convex roller 61 is placed in the newly replaced concave roller 71, and the untouched second contact track surface 422 can be called 532. The newly replaced convex roller 61 can be unaffected. The worn first contact track faces 421, 531 are in contact, so that the slider 5 〇 and the guide rail 4 〇 can continue to be used normally, thereby achieving an effect of increasing the service life by twice. Of course, the industry can also reverse the way. When the track 4 () is configured for the first time of the slider 5 ', the concave roller 71 can be installed in the upper roller groove 42 , 53 'the convex roller 61 Set in the lower roller grooves 42, 53, as shown in the figure, when the guide rail 40 is to be disposed for the second time, the original convex roller 61 and the concave roller 61 are mounted on the upper roller concave. The groove is mounted in the lower roller groove 42 to extend the service life. 71 full number _, let the new type of convex roll right 42 53, after the replacement of the new concave type 71 53 ' as shown in Figure 9, can also be achieved with reference to Figure 11, the new type in the first match» The ceremony is now beaten, the guide rails 4 〇 and 4 50 upper and lower two roller groove pavilions, 53 can also choose the same type of convex roller 6 b to wait for the sigh of the singer夂 configuration slider 50 operation knows that the upper and lower two roller grooves 42, 53 can be simultaneously changed to use concave rollers;; placed 'as shown in Figure 12, of course, the operator can also use the opposite means of replacement, the same It also achieves an effect of increasing the service life by twice. It is worth mentioning that if the operator feels that the work of removing the convex roller 61 and the concave roller 移除 from the inside of the slider 5G is troublesome, the operator can also select the entire slider 5 ◦ together with all the convex rollers 61. The concave roller 71 is completely renewed. As described above, the present invention can improve the linear slippage of the material life in order to improve the shortevity of the conventional linear slippery. The main technical means of the present invention is to use two different types of convexity. Type roller Μ and recessed roller 71 'The convex roller 61 has an intermediate contact portion 611 having a different diameter and a non-contact portion 612 on the outer circumference. The outer circumference of the concave roller 71 is provided opposite to the convex roller 61. The intermediate non-contact portion 711 and the contact portion 712 define a first contact tracking surface 421, 531 and a second contact track surface 422, 532 on the wall surface of the roller groove 42, 53 of the slider 50, when selected When the convex rollers 61 are placed in the roller grooves 42, 53, the convex rollers 61 are in contact with the first contact track faces 421, 531 and maintain the second contact track faces 422 M441055, 532 in an untouched state. When the concave rollers 71 are selected to be placed in the roller grooves 42, 53, the concave rollers 71 are in contact with the second contact track faces 422, 532 and hold the first contact track faces 421, 531 in an uncontacted state by using the above rollers. 61, 71 structural characteristics, the first use of one of the roller units 6 (7〇) makes contact with one of the contact track faces 421, 531 (422, 532), so that the slider 50 can smoothly move normally on the guide 4〇, when the contact track faces 421, 531 (422, 532) After the wear occurs, the other contact track surfaces 422, 532 (421, 531) are contacted by another set of roller units 70 (60), and the other set of rollers single A 7 〇 (10) will be avoided. The damaged contact trajectory is rubbed, and the rolling is performed on the completely new contact trajectory surface, thereby achieving the effect of doubling the service life. Through the above-mentioned technical means, this new type of line month and the conventional linear slippery comparison. 'This new type allows linear slides to double the use of life, especially linear slippery is widely used in aerospace industry, In the automotive industry, metal processing machines and other industrial machinery, this new type of machine has a longer life span of these machines, which is of great help to the machinery industry, and the new type of guide rail 4 is only in a worn state. It is only necessary to change the type of the roller 61 (71) which is placed in the non-supplement type, and it is not necessary to replace and recalibrate the linear slide rail as in the prior art, so the replacement work of the present invention is quicker and more convenient, and can be Effectively save the cost of rail steel. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the new description content. , are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a combined sectional view of a conventional linear slide rail; FIG. 2 is a combined sectional view of another conventional linear slide rail; FIG. 3 is a linear stroke control of the present invention capable of improving twice the service life. A perspective view of a preferred embodiment of the present invention includes a guide rail, a slider, a convex roller unit and a concave roller unit. FIG. 4 is a sectional view of the preferred embodiment of the preferred embodiment, illustrating the guide and A roller groove is arranged between the sliders for the convex roller unit and the concave roller unit to be inserted; FIG. 5 is a perspective enlarged view of the above preferred embodiment, illustrating the guide roller groove and the convex FIG. 6 is a perspective enlarged view of the above preferred embodiment, illustrating a situation in which the guide roller groove is engaged with the concave roller unit; Figure 7 is an enlarged schematic view of the above preferred embodiment, illustrating the shape of the convex roller of the convex roller unit; Figure 8 is an enlarged schematic view of the preferred embodiment, illustrating the shape of the concave roller of the concave roller unit; FIG. 9 is an enlarged schematic view of the above preferred embodiment, illustrating a state in which the convex roller unit and the concave roller unit are in contact in the roller groove; FIG. 10 is a schematic view of the operation of the above preferred embodiment, illustrating the roller groove After the wall surface is worn, the different roller units can be replaced; FIG. 11 is a combined schematic view of the above preferred embodiment, illustrating the case where two sets of convex roller units can be simultaneously placed in the roller groove; 12 is a schematic view of the operation of the above preferred embodiment, illustrating a situation in which two sets of concave roller units can be replaced in the groove of the roller. M441055 [Description of main component symbols] 40····· •...Guide 532... ...·Second contact track surface 41 ·.··· •...Action side 533... •...Draining groove 42·..·· • ...roller groove 54... •...circulation hole 421... •...first contact track surface 60...•...convex roller unit 422...•...second contact track surface 61......·convex roller 423... •...breaking groove 611 ··...intermediate contact part 50...•...slider 612 ·...·non-contact part 51......·slot 70......concave roller unit 52... ...inside action side 71.........concave roller 53...•...roller groove 711 ··........intermediate non-contact part 531 ······first contact track surface 712 .... ...contact Part 12