TWI703278B - Ball screw - Google Patents

Ball screw Download PDF

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Publication number
TWI703278B
TWI703278B TW106108809A TW106108809A TWI703278B TW I703278 B TWI703278 B TW I703278B TW 106108809 A TW106108809 A TW 106108809A TW 106108809 A TW106108809 A TW 106108809A TW I703278 B TWI703278 B TW I703278B
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Taiwan
Prior art keywords
nut
sleeve
passage
hole
nut body
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TW106108809A
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Chinese (zh)
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TW201734334A (en
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坂井哲也
武石正和
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日商日本東晟股份有限公司
日商第一測範製作所股份有限公司
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/068—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track
    • F16C29/0683—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque
    • F16C29/0685—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque with balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

本發明滾珠螺釘利用滾珠在螺帽內部之循環構造，以抑制發生噪音，藉套入螺帽本體插孔內的飽浸潤滑劑之套筒形成回流通路，對於在回流通路滾動之滾珠供應潤滑劑，達成免潤滑保養。套合於具有螺旋溝11的螺釘軸1之螺帽2，包括筒狀螺帽本體3，具有螺旋溝12和回流通路13；端蓋4，具有末端轉向部6，配置於螺帽本體3之端部18；以及套筒7，由套入螺帽本體3的插孔24內之多孔質成型體構成。滾珠9是在套筒7之回流通路13內滾動時，供以潤滑劑，達成免潤滑保養。 The ball screw of the present invention utilizes the circulation structure of the balls inside the nut to suppress noise generation. The sleeve filled with lubricant in the socket of the nut body forms a return path for the supply of balls rolling in the return path Lubricant to achieve lubrication-free maintenance. The nut 2 fitted on the screw shaft 1 with the spiral groove 11 includes a cylindrical nut body 3 with a spiral groove 12 and a return passage 13; an end cover 4 with a terminal turning portion 6 arranged on the nut body 3 The end 18; and the sleeve 7 are formed by a porous molded body inserted into the insertion hole 24 of the nut body 3. The ball 9 is supplied with lubricant when rolling in the return passage 13 of the sleeve 7 to achieve lubrication-free maintenance.

Description

滾珠螺釘 Ball screw

本發明係關於係關於一種滾珠螺釘，用於例如決定精密位置的平台等機電一體化製品、檢查裝置等之各種機器組裝，具有供脂機構，由螺釘軸和在該螺釘軸上相對運動之螺帽所構成。 The present invention relates to a ball screw used for assembling various machines such as mechatronics products such as platforms for determining precise positions, inspection devices, etc. It has a grease supply mechanism, and a screw shaft and a screw moving relative to the screw shaft Constituted by a cap.

習知將潤滑劑以自潤式安定供應之直線運動裝置，有例如日本專利案特開2013-174255號公開公報所揭示。該直線運動裝置係末端轉向裝置式之滾珠螺釘驅動裝置，包括在內周面形成螺旋溝之螺帽，在外周面形成螺旋溝與該螺帽的螺旋溝對立之螺釘軸，以及可裝配入螺帽的螺旋溝和螺釘軸的螺旋溝所形成螺旋軌道面間之複數滾珠。螺帽內部在軸向形成回流通路，表面係由含油樹脂材料一體射出模製。 Conventionally, a linear motion device that supplies a lubricant as a self-lubricating stabilizer is disclosed in, for example, Japanese Patent Laid-Open No. 2013-174255. The linear motion device is a ball screw driving device of the end turning device type. It includes a nut with a spiral groove formed on the inner peripheral surface, a screw shaft with a spiral groove formed on the outer peripheral surface opposite to the spiral groove of the nut, and a screw shaft that can be fitted into the screw. The spiral groove of the cap and the spiral groove of the screw shaft form a plurality of balls between the spiral track surfaces. The inside of the nut forms a return passage in the axial direction, and the surface is integrally injected and molded from an oil-containing resin material.

又，本申請人為提高設計之自由度，開發潤滑油管理簡單且對滾動體滑動阻力少之滾動導引單位，已提出專利申請案(例如參見特開2006-38195號公報)。該滾動導引單位包括滑動自如穿過軌道之筒構件、由該筒構件和軌道組合形成之軌道通路、筒構件所形成軌道通路兩端經由轉向通路的凹部連通之循環通路，以及在該循環通路和上述軌道通路滾動之複數滾動體。前述滾動導引單位係因應軌道與筒構件之相對移動，使滾動體在循環通路和軌道通路內循環。前述滾動導引單位包括形成筒構件之組裝孔，組裝於該組裝孔內之含油構件，沿軌道通路或循環通路中的滾動體接觸面而設之供油構件，使該供由構件與含油構件接觸。 In addition, the applicant has filed a patent application for the development of a rolling guide unit with simple lubricant management and low sliding resistance to the rolling elements in order to increase the degree of freedom of design (for example, see JP 2006-38195). The rolling guide unit includes a cylindrical member slidably passing through the rail, a rail passage formed by the combination of the cylindrical member and the rail, a circulation passage in which both ends of the rail passage formed by the cylindrical member communicate via a recessed portion of the steering passage, and the circulation passage A plurality of rolling elements rolling with the above-mentioned orbital passage. The aforementioned rolling guide unit circulates the rolling body in the circulation passage and the rail passage in response to the relative movement of the rail and the cylindrical member. The aforementioned rolling guide unit includes an assembly hole forming a cylindrical member, an oil-containing member assembled in the assembly hole, and an oil-supplying member arranged along the contact surface of the rolling element in the track passage or the circulation passage, so that the supply member and the oil-containing member contact.

又，末端轉向方式之滾珠螺釘，有例如特開2013-2554號公報所揭示。該末端轉向方式之滾珠螺釘構成是，以小衝程運轉時，或以自動給脂裝置把滑脂供給螺帽內部時，利用滑脂獲得潤滑性能，包括在內周面形成螺旋溝之螺帽，在外周面形成螺旋溝之螺釘軸，配置在螺帽的螺旋溝和螺釘軸的螺旋溝所形成軌道間之滾珠，在螺帽形成讓滾珠從軌道終點再回流到起點的滾珠回流路徑沿軸向貫通之回流通路，以及末端轉向部形 成連接兩端之彎曲通路，藉此在螺帽內部形成可利用基油在40℃之動粘度為30mm2/s以上至40mm2/s以下，混合稠度在300以上至330以下之滑脂，加以潤滑。 In addition, the ball screw of the end turning method is disclosed in, for example, JP 2013-2554. The ball screw structure of this end turning method uses the grease to obtain lubrication performance when operating in a small stroke or when the grease is supplied to the inside of the nut with an automatic grease feeding device, including the nut with a spiral groove formed on the inner peripheral surface. The screw shaft with a spiral groove formed on the outer peripheral surface, the balls are arranged between the track formed by the spiral groove of the nut and the spiral groove of the screw shaft, and the ball return path that allows the balls to return from the end of the track to the starting point is formed along the axial direction. The through return passage and the end turning part form a curved passage connecting the two ends, thereby forming a kinematic viscosity of the available base oil at 40°C from 30mm 2 /s or more to 40mm 2 /s or less in the nut. Grease above 300 to below 330 should be lubricated.

然而，上述直線運動裝置係在螺帽回流通路，利用含油樹脂材料射出模製，一體成型。該含油樹脂材料係由樹脂材料和潤滑油預先混合，將該混合材料射出模製而成，在潤滑油容量減少時，無法補給潤滑油，容易造成潤滑不良，而且必須與螺帽一體用含油樹脂材料射出成形，手續繁多，增加製造成本，問題多多。又，上述滾動導引單位係在滾珠栓槽的端蓋轉向通路設備供油構件，在外筒設備含油構件，以此欲求實現免潤滑油保養，但含油構件組裝於組裝孔內時，仍有潤滑油從含油構件至供油構件供應不足的問題。 However, the above-mentioned linear motion device is located in the nut return passage, and is molded by an oil-containing resin material and integrally formed. The oil-containing resin material is pre-mixed with a resin material and lubricating oil, and the mixed material is injection molded. When the lubricating oil capacity is reduced, the lubricating oil cannot be replenished, which is likely to cause poor lubrication, and the oil-containing resin must be integrated with the nut Material injection molding requires many procedures, increasing manufacturing costs and many problems. In addition, the above-mentioned rolling guide unit is attached to the oil supply member of the steering passage device in the end cover of the ball bolt groove, and the oil-containing member is installed in the outer cylinder, so as to achieve lubrication-free maintenance, but the oil-containing member is still lubricated when assembled in the assembly hole The problem of insufficient oil supply from the oil-containing component to the oil supply component.

本發明之目的，在於解決上述問題，提供一種滾珠螺釘，於螺帽本體內以內部回流式形成滾動體的滾珠循環通路，使滾珠在螺帽內部循環，以抑制發生噪音，實現滾珠在循環通路滑順滾動，達成高速又低噪音化，可構成螺帽本體的螺帽外徑比降低，達成精巧型，節省空間，尤其是在螺帽本體形成套合孔，可供形成回流通路之套筒套入，以燒結樹脂之多孔質成型體製作套筒，於套筒飽浸潤滑劑，把潤滑劑供給與套筒接觸之滾珠，達成免潤滑保養。 The object of the present invention is to solve the above-mentioned problems and provide a ball screw in which the ball circulation path of the rolling elements is formed in the nut body by an internal return type, so that the balls circulate inside the nut to suppress noise and realize the balls in the circulation path Smooth rolling, achieving high speed and low noise, reducing the ratio of the outer diameter of the nut that constitutes the nut body, achieving a compact and saving space, especially the sleeve hole formed in the nut body, which can form the sleeve of the return path The sleeve is sleeved, and the sleeve is made of a porous molded body of sintered resin. The sleeve is saturated with lubricant and the lubricant is supplied to the balls in contact with the sleeve to achieve lubrication-free maintenance.

本發明係關於一種滾珠螺釘，包括可旋轉螺釘軸，在外周面沿軸向形成第一螺旋溝；和筒狀螺帽，形成可套合該螺釘軸之第一套合孔，且在內周面沿軸向形成第二螺旋溝，與該第一螺旋溝對立，藉在該第一螺旋溝和該第二螺旋溝所形成螺旋軌道通路內滾動的複數滾動之滾珠，使該螺帽可在該螺釘軸上按縱長方向移動，其特徵為 該螺帽包括筒狀螺帽本體，具有該第二螺旋溝，和按該縱長方向延伸供該滾珠滾動的回流通路；端蓋，分別配置在該螺帽本體的兩端部，具有末端轉向部，形成轉向通路，連通該螺旋軌道通路和該回流通路；以及套筒，套合於該螺帽本體形成之第二套合孔，具有形成該回流通路之通孔，該套筒係由飽浸潤滑劑的多孔質成型體所形成，在該回流通路滾動之該滾 珠接觸到該套筒時，該潤滑劑即供給於該滾珠。 The present invention relates to a ball screw, including a rotatable screw shaft, forming a first spiral groove on the outer peripheral surface along the axial direction; and a cylindrical nut, forming a first sleeve hole that can be sleeved with the screw shaft, and an inner circumference A second spiral groove is formed on the surface along the axial direction, which is opposite to the first spiral groove. The plurality of rolling balls rolling in the spiral track path formed by the first spiral groove and the second spiral groove enables the nut to move in The screw shaft moves in the longitudinal direction and is characterized by The nut includes a cylindrical nut body with the second spiral groove and a return path extending in the longitudinal direction for the ball to roll; end caps are respectively arranged on both ends of the nut body and have ends The turning part forms a turning passage, which communicates the spiral track passage and the return passage; and a sleeve sleeved on the second sleeve hole formed by the nut body and has a through hole forming the return passage, the sleeve It is formed by a porous molded body saturated with lubricant, and the roller rolling in the return path When the ball contacts the sleeve, the lubricant is supplied to the ball.

又，本發明滾珠螺釘構造，是在該螺帽本體具有凸緣部，形成安裝孔，以安裝對應構件，在該螺帽本體的凸緣部相反側，形成第一凹部，連通形成該回流通路一部份之貫通孔，套入該末端轉向部，在該螺帽本體之該凸緣部側，則形成第二凹部，連通該第二套合孔，套入該末端轉向部，尺寸比套入該末端轉向部之第一凹部大。 In addition, in the ball screw structure of the present invention, the nut body has a flange portion, and a mounting hole is formed to install a corresponding member. On the opposite side of the flange portion of the nut body, a first recess is formed to communicate with the return flow The through hole of a part of the road is sleeved into the end turning part, and on the flange side of the nut body, a second recess is formed, which communicates with the second fitting hole, and is sleeved into the end turning part. The first concave part nested in the end turning part is large.

又，該螺帽本體所設該回流通路，包括該套筒之該通孔，可插經該螺帽本體所形成該第二套合孔，以及該貫通孔，連通該第二套合孔，形成於該螺帽本體。本發明滾珠螺釘在該螺帽本體所形成該第二套合孔與該螺帽本體所形成該貫通孔之間，形成段部，與套入該第二套合孔之該套筒端面接觸，該段部大小形成與該套筒之厚度相同，在該套筒的該回流通路和該貫通孔的該回流通路之間，不形成段差即可順利連通。 Furthermore, the return passage provided in the nut body includes the through hole of the sleeve, the second fitting hole formed by inserting the nut body, and the through hole communicating with the second fitting hole , Formed in the nut body. The ball screw of the present invention forms a section between the second fitting hole formed by the nut body and the through hole formed by the nut body, and is in contact with the end surface of the sleeve inserted into the second fitting hole, The size of the segment is formed to be the same as the thickness of the sleeve, and the return passage of the sleeve and the return passage of the through hole can communicate smoothly without forming a step.

又，位於該螺帽本體的凸緣部相反側之該轉向通路，包括套入該第一凹部的該末端轉向部所形成之轉向通路溝，和該螺帽本體之該一凹部壁面，而位於該螺帽本體的該凸緣部側之該轉向通路，包括套入該第二凹部的該末端轉向部所形成之轉向通路溝，和套入該螺帽本體的該第二凹部之間隔件壁面。 In addition, the steering passage located on the opposite side of the flange portion of the nut body includes a steering passage groove formed by the end turning portion of the first recessed portion, and a wall surface of the recessed portion of the nut body. The turning passage on the flange portion side of the nut body includes a turning passage groove formed by the end turning portion of the second recess, and a spacer wall surface of the second recess of the nut body .

又，在本發明滾珠螺釘中，該滾動體之該滾珠，係因應該螺釘軸之旋轉，在該螺旋軌道通路、該螺帽本體所設該回流通路，以及連通該螺旋軌道通路和該回流通路的轉向通路所構成循環通路滾動，該螺帽即在該螺釘軸上，藉該滾珠而相對移動。 In addition, in the ball screw of the present invention, the ball of the rolling element is provided in the spiral track passage and the nut body in response to the rotation of the screw shaft, and connects the spiral track passage and the return path. The circulation passage formed by the turning passage of the flow passage rolls, and the nut is on the screw shaft and moves relatively by the ball.

又，該套筒形成比在該螺帽本體形成的該第二螺旋溝在該縱長方向之長度為短，該末端轉向部除分別套合於該螺帽本體的該第一凹部和該第二凹部外，又具有抓爪，可在該轉向通路溝和該螺旋軌道通路側抓住該滾珠。 In addition, the sleeve is formed to be shorter than the length of the second spiral groove formed in the nut body in the longitudinal direction, and the end turning portion is respectively sleeved on the first concave portion and the first recess of the nut body Outside the two recesses, there are gripping claws, which can grasp the ball on the side of the steering passage groove and the spiral track passage.

又，該端蓋包括環狀端蓋本體，形成可插該螺釘軸之第三套合孔，和在該第三套合孔周圍之複數安裝孔，可安裝於該螺帽本體；以及該末端轉向部，形成從該端蓋本體端面凸出之一體構造，且形成該轉向通路和該抓爪。 In addition, the end cap includes an annular end cap body, a third fitting hole for inserting the screw shaft is formed, and a plurality of installation holes around the third fitting hole, which can be installed on the nut body; and the end The turning part forms a one-piece structure protruding from the end surface of the end cover body, and forms the turning passage and the gripper.

又，前述螺釘軸形成按該縱長方向延伸之一排該第一螺旋 溝，且可旋轉支持於基底之圓軸型滾珠螺釘軸。 In addition, the aforementioned screw shaft forms a row of the first spiral extending in the longitudinal direction Groove, and can be rotatably supported on the base of the ball screw shaft.

又，該套筒係由聚乙烯或聚丙烯合成樹脂微粒壓出熱固成型，形成多孔質成型體，具有多孔部，在該合成樹脂微粒間保持連通狀態，而於該多孔部飽浸潤滑劑。 In addition, the sleeve is made of polyethylene or polypropylene synthetic resin particles by extruding and thermosetting molding to form a porous molded body. The sleeve has a porous part, and the synthetic resin particles are kept in a communicating state, and the porous part is saturated with lubricant. .

本發明滾珠螺釘如上所述，由於螺帽所形成循環通路，係形成於螺帽本體內部，可達成高速又低噪音化，螺帽外徑比盡量縮小尺寸，達成節省空間，可構造精巧。又，本發明滾珠螺釘以飽浸潤滑劑之多孔質成型體所形成套筒之通孔，形成回流通路，故滾珠在回流通路滾動時，潤滑劑可適當補給滾珠，可達成免潤滑保養。又，本發明滾珠螺釘係在螺帽本體的凸緣部相反側端部，形成連通第一凹部之貫通孔，該貫通孔形成縱長方向之部份回流通路，另在螺帽本體的凸緣部側，形成貫通孔內徑之大徑，構成套筒可套入之套合孔，此時在凸緣部可將套合孔加工成大徑，形成比第一凹部更大，成為凸緣部側第二凹部工具脫出部。在第二凹部套入端蓋之末端轉向部時，發生間隙，致轉向通路之壁面呈欠缺狀態，為掩蓋其間隙，將形成轉向通路一部份的間隔件，***第二凹部之間隙，使該間隔件壁面構成轉向通路之一部份，完成轉向通路。又，因形成凸緣部相反側回流通路之貫通孔內徑，與形成回流通路的套筒內徑，亦即通孔內徑相同，故即形成跨越回流通路全長無段差之順利通路。本發明滾珠螺釘在藉貫通孔分別連通於回流通路的套筒通孔之回流通路順利滾動，由於套筒係由飽浸潤滑劑之多孔質成型體形成，故在套筒所形成回流通路滾動之滾珠，可適當供給潤滑劑，即可達成免潤滑保養。又，第二凹部為套入間隔體，可形成於較厚之凸緣部側，套筒即呈可從凸緣部側套入之狀態。 As described above, the ball screw of the present invention can achieve high speed and low noise because the circulation path formed by the nut is formed inside the nut body, the outer diameter ratio of the nut is reduced as much as possible, and the space is saved, and the structure can be exquisite. In addition, the ball screw of the present invention uses a porous molded body saturated with lubricant to form the through hole of the sleeve to form a return path. Therefore, when the ball is rolling in the return path, the lubricant can be appropriately supplied to the ball, which can achieve lubrication-free maintenance . In addition, the ball screw of the present invention is attached to the end of the nut body on the opposite side of the flange to form a through hole communicating with the first recess. The through hole forms a partial return passage in the longitudinal direction. On the edge side, the large diameter of the inner diameter of the through hole is formed to form a fitting hole into which the sleeve can be inserted. At this time, the fitting hole can be processed into a large diameter at the flange portion, forming a larger diameter than the first recess and becoming a convex Edge side second concave part tool escape part. When the second concave part is sleeved into the end turning part of the end cap, a gap occurs, causing the wall surface of the steering passage to be in a state of lack. In order to cover the gap, the spacer forming part of the steering passage is inserted into the gap of the second recess to make The wall surface of the spacer constitutes a part of the steering passage, completing the steering passage. In addition, since the inner diameter of the through hole forming the return passage on the opposite side of the flange is the same as the inner diameter of the sleeve forming the return passage, that is, the inner diameter of the through hole, a smooth passage with no step over the entire length of the return passage is formed. . The ball screw of the present invention rolls smoothly in the return passages of the sleeve through holes respectively connected to the return passage through the through holes. Since the sleeve is formed of a porous molded body saturated with lubricant, the return flow is formed in the sleeve Lubrication-free maintenance can be achieved by supplying lubricant to the rolling balls of the road. In addition, the second recessed portion is a sleeve-fitting spacer, which can be formed on the thicker flange portion side, and the sleeve can be sleeved from the flange portion side.

1‧‧‧螺釘軸 1‧‧‧Screw shaft

2‧‧‧筒狀螺帽 2‧‧‧Cylinder Nut

3‧‧‧螺帽本體 3‧‧‧Nut body

4‧‧‧端蓋 4‧‧‧End cap

5‧‧‧端蓋本體 5‧‧‧End cap body

6‧‧‧末端轉向部 6‧‧‧End steering part

7‧‧‧套筒 7‧‧‧Sleeve

8‧‧‧凸緣部 8‧‧‧Flange

9‧‧‧滾珠 9‧‧‧Ball

10‧‧‧外周面 10‧‧‧Outer peripheral surface

11‧‧‧第一螺旋溝 11‧‧‧First spiral groove

12‧‧‧第二螺旋溝 12‧‧‧Second spiral groove

13‧‧‧回流通路 13‧‧‧Return path

14‧‧‧轉向通路 14‧‧‧Turning path

15‧‧‧螺旋軌道通路 15‧‧‧Spiral Pathway

16‧‧‧循環通路 16‧‧‧Circulation path

17‧‧‧內周面 17‧‧‧Inner peripheral surface

18‧‧‧端部 18‧‧‧End

19‧‧‧端面 19‧‧‧End face

20‧‧‧段部 Section 20‧‧‧

21‧‧‧第一凹部 21‧‧‧First recess

22‧‧‧第二凹部 22‧‧‧Second recess

23‧‧‧貫通孔 23‧‧‧Through hole

24‧‧‧套合孔 24‧‧‧Sleeve hole

25‧‧‧安裝孔 25‧‧‧Mounting hole

27‧‧‧套筒端面 27‧‧‧Sleeve end face

29‧‧‧抓爪 29‧‧‧Gripper

31‧‧‧固定螺釘 31‧‧‧Fix screw

32‧‧‧通孔 32‧‧‧Through hole

33,34‧‧‧套合孔 33,34‧‧‧Sleeve hole

35‧‧‧轉向通路溝 35‧‧‧Turning channel groove

36‧‧‧壁面 36‧‧‧Wall

37‧‧‧間隔件 37‧‧‧Spacer

38‧‧‧壁面 38‧‧‧Wall

39‧‧‧安裝孔 39‧‧‧Mounting hole

40‧‧‧端面 40‧‧‧end face

41‧‧‧安裝螺孔 41‧‧‧Mounting screw hole

42‧‧‧端面 42‧‧‧end face

第1圖表示本發明滾珠螺釘第一實施例之斜視圖；第2圖表示第1圖滾珠螺釘中螺帽本體之部份破開斜視圖；第3圖為放大斷面圖，擴大圖示說明第1圖滾珠螺釘中構成螺帽的螺帽本體、形成回流通路的套筒、具有形成轉向通路的末端轉向部之端蓋本體、配置於套合孔的間隔體等之關係； 第4圖表示第1圖滾珠螺釘之分解斜視圖；第5圖表示第4圖滾珠螺釘中組成螺帽之端蓋，(A)為前視圖，(B)為側視圖；第6圖表示組裝於第1圖滾珠螺釘之螺帽本體，(A)為自凸緣部側看之螺帽本體前視圖，(B)為側視圖，(C)為自凸緣部相反側看之螺帽本體後視圖；第7圖為末端轉向部呈斷面之前視圖，表示末端轉向部和間隔件組裝於螺帽本體的凸緣部端面側凹部之狀態。 Fig. 1 shows an oblique view of the first embodiment of the ball screw of the present invention; Fig. 2 shows a broken oblique view of the nut body in the ball screw of Fig. 1; Fig. 3 is an enlarged cross-sectional view with an enlarged illustration The relationship between the nut body constituting the nut in the ball screw, the sleeve forming the return passage, the end cap body with the end turning part forming the steering passage, the spacer arranged in the fitting hole, etc.; Figure 4 shows an exploded oblique view of the ball screw of Figure 1; Figure 5 shows the end cap of the ball screw in Figure 4, (A) is the front view, (B) is the side view; Figure 6 is the assembly In the nut body of the ball screw in Figure 1, (A) is the front view of the nut body viewed from the side of the flange, (B) is the side view, (C) is the nut body viewed from the opposite side of the flange Rear view; Figure 7 is a cross-sectional front view of the end turning portion, showing the state where the end turning portion and the spacer are assembled in the concave portion of the flange end surface of the nut body.

本發明滾珠螺釘適用於決定精密位置的平台等機電一體化製品、檢查裝置等各種機器為佳。 The ball screw of the present invention is preferably suitable for various machines such as mechatronic products such as platforms that determine precise positions, and inspection devices.

以下參照附圖，說明本發明滾珠螺釘之實施例。本發明滾珠螺釘總而言之，具有可旋轉之螺釘軸1，在外周面10按軸向形成螺旋溝11(第一螺旋溝)；和筒狀螺帽2，形成可供螺釘軸1套入套合孔33(第一套合孔)，且在內周面17按軸向形成螺旋溝12(第二螺旋溝)，與螺旋溝11對立。本發明滾珠螺釘構成為，因應螺釘軸1旋轉，藉螺旋溝11和螺旋溝12所形成螺旋軌道通路15內滾動的複數滾動體之滾珠9，螺帽2即可在螺釘軸1上按縱長方向相對移動。 Hereinafter, embodiments of the ball screw of the present invention will be described with reference to the drawings. In summary, the ball screw of the present invention has a rotatable screw shaft 1, forming a spiral groove 11 (first spiral groove) in the axial direction on the outer peripheral surface 10; and a cylindrical nut 2, forming a fitting hole for the screw shaft 1 to fit into 33 (first fitting hole), and a spiral groove 12 (second spiral groove) is formed on the inner peripheral surface 17 in the axial direction, which is opposite to the spiral groove 11. The ball screw of the present invention is composed of a plurality of rolling elements of the ball 9 rolling in the spiral track passage 15 formed by the spiral groove 11 and the spiral groove 12 in response to the rotation of the screw shaft 1, and the nut 2 can be vertically elongated on the screw shaft 1. Relative movement in direction.

在本發明滾珠螺釘中，螺帽2包括螺帽本體3，具有螺旋溝12，和沿縱長方向延伸供滾珠9滾動之回流通路13；端蓋4，具有末端轉向部6，形成轉向通路14，分別配置於螺帽本體3的兩端部18，且將螺旋軌道通路15和回流通路13連通；以及套筒7，具有通孔32，可套合螺帽本體3所形成套合孔24(第二套合孔)，形成回流通路13。末端轉向部6形成從端蓋本體5的端面19凸出之凸部，形成轉向通路溝35，構成轉向通路14。在端蓋本體5外側端面42，形成埋頭孔之安裝孔39。套入螺帽本體3的套合孔24之套筒，係由飽浸潤滑劑之多孔質成型體形成，套筒7與在回流通路13滾動之滾珠9接觸時，潤滑劑即供應於滾珠9。 In the ball screw of the present invention, the nut 2 includes a nut body 3 with a spiral groove 12 and a return passage 13 extending in the longitudinal direction for the balls 9 to roll; the end cover 4 has an end turning portion 6 forming a turning passage 14. They are respectively arranged at the two ends 18 of the nut body 3 and connect the spiral track passage 15 and the return passage 13; and the sleeve 7 has a through hole 32 that can be fitted into the fitting hole formed by the nut body 3 24 (the second fitting hole), forming a return passage 13. The end turning portion 6 forms a convex portion protruding from the end surface 19 of the end cap body 5, forms a turning passage groove 35, and forms a turning passage 14. On the outer end surface 42 of the end cap body 5, a countersunk mounting hole 39 is formed. The sleeve fitted into the sleeve hole 24 of the nut body 3 is formed of a porous molded body saturated with lubricant. When the sleeve 7 contacts the ball 9 rolling in the return passage 13, the lubricant is supplied to the ball 9.

又，本發明滾珠螺釘係在螺帽本體3，具有凸緣部8，形成安裝孔25，供安裝於對應構件，在螺帽本體3的凸緣部8相反側形成凹部21(第一凹部)，連通形成轉向通路14一部份之貫通孔23，套入末端轉向部6，而在凸緣部8側形成凹部22(第二凹部)，連通套合孔24，尺寸比套 入末端轉向部6的凹部21大。端蓋4是在末端轉向部6配置螺帽本體3之凹部21,22，把固定螺釘31套入安裝孔39，將固定螺釘31旋入螺帽本體3的端面40所形成安裝螺孔41，而固定於螺帽本體3。 In addition, the ball screw of the present invention is attached to the nut body 3, and has a flange portion 8 and a mounting hole 25 is formed for mounting to a corresponding member. A recess 21 (first recess) is formed on the opposite side of the flange portion 8 of the nut body 3 , The through hole 23 that communicates with a part of the steering passage 14 is inserted into the end turning portion 6, and a recess 22 (second recess) is formed on the side of the flange portion 8 to communicate with the sleeve hole 24, the size is larger than the sleeve The recess 21 of the entry end turning portion 6 is large. The end cover 4 is equipped with the recesses 21 and 22 of the nut body 3 at the end turning part 6, and the fixing screw 31 is inserted into the mounting hole 39, and the fixing screw 31 is screwed into the end surface 40 of the nut body 3 to form a mounting screw hole 41. And fixed to the nut body 3.

又，位於螺帽本體3的凸緣部8相反側之轉向通路14，包括套入於凹部21的末端轉向部6所形成轉向通路溝35，和螺帽本體3之凹部21壁面36，位於凸緣部8側之轉向通路14包括套入於凹部22的末端轉向部6所形成轉向通路溝35，和套入於螺帽本體3的凹部22之間隔件37壁面38。本發明滾珠螺釘形成盡量比螺帽本體3之外徑小，構成節省空間，惟因凸緣部8相反側之螺帽本體3厚度較薄，宜在螺帽本體3的端部18強度減少加以確保。因此，螺帽本體3在凸緣部8相反側端部18之凹部21，無法形成尺寸足夠工具作動程度之大小。於此，關於螺帽本體3的凸緣部8相反側，不套入套筒7，將貫通孔23形成回流通路13。相對地，在螺帽2的凸緣部8側，由於凸緣部8形成厚度，可加大形成套合孔24，把間隔件37***螺帽本體3。亦即在凸緣部8相反側之螺帽本體3，形成凹部21，其尺寸較小，足夠套入端蓋4之末端轉向部6即可，相對地，在螺帽本體3的凸緣部8側，形成加工套合孔24所用工具之脫出部，在凸緣部8側的端部18形成尺寸比凹部21更大的凹部22，藉此利用工具把螺帽本體3所形成貫通孔(圖上未示)加大形成，把套筒7套入加大之貫通孔，即套合孔24。又，在螺帽本體3端部18之凹部22，即使套入端蓋4之末端轉向部6，會形成間隙，於該間隙套入形成轉向通路14壁面38之間隔件37。換言之，螺帽3在凸緣部8側形成厚度，把貫通孔加大，形成套入套筒7之加大套合孔24。如上所述，在螺帽本體3之凸緣部8側，形成套筒7套入用之套合孔24，此時在凸緣部8，因凹部22進口部加大，比轉向通路14的回流通路進口之凹部22大，轉向通路14壁面呈缺口狀態，為加以彌補，把轉向通路14部份所形成間隔件37，套入凹部22，完成轉向通路14。 In addition, the steering passage 14 located on the opposite side of the flange portion 8 of the nut body 3 includes a steering passage groove 35 formed by the end turning portion 6 of the recess 21 and a wall surface 36 of the recess 21 of the nut body 3, which is located on the convex The steering passage 14 on the side of the rim 8 includes a steering passage groove 35 formed by the end steering portion 6 of the recess 22 and a wall surface 38 of the spacer 37 inserted in the recess 22 of the nut body 3. The ball screw of the present invention is formed to be as small as possible than the outer diameter of the nut body 3 to save space. However, because the thickness of the nut body 3 on the opposite side of the flange portion 8 is thin, it is advisable to reduce the strength of the end 18 of the nut body 3. make sure. Therefore, the recess 21 of the end 18 of the nut body 3 on the opposite side of the flange 8 cannot be formed to a size sufficient for the operation of the tool. Here, regarding the side opposite to the flange portion 8 of the nut main body 3, the sleeve 7 is not fitted, and the through hole 23 is formed as the return passage 13. In contrast, on the side of the flange portion 8 of the nut 2, since the flange portion 8 has a thickness, the fitting hole 24 can be enlarged and the spacer 37 can be inserted into the nut body 3. That is, on the nut body 3 on the opposite side of the flange portion 8, a recess 21 is formed, the size of which is small enough to fit into the end turning portion 6 of the end cap 4. On the contrary, on the flange portion of the nut body 3 On the 8th side, the escape part of the tool used to process the fitting hole 24 is formed, and the end 18 on the flange part 8 side is formed with a recess 22 having a larger size than the recess 21, whereby the through hole formed by the nut body 3 is moved by the tool (Not shown in the figure) to be enlarged, the sleeve 7 is sleeved into the enlarged through hole, that is, the sleeve hole 24. In addition, in the recess 22 of the end 18 of the nut body 3, even if it is inserted into the end turning portion 6 of the end cap 4, a gap is formed, and the spacer 37 forming the wall 38 of the turning passage 14 is inserted into the gap. In other words, the nut 3 has a thickness on the flange portion 8 side, and the through hole is enlarged to form an enlarged fitting hole 24 that is inserted into the sleeve 7. As described above, on the flange portion 8 side of the nut body 3, a fitting hole 24 for the sleeve 7 is formed. At this time, the flange portion 8 is enlarged because the entrance of the recess 22 is larger than that of the steering passage 14. The recess 22 at the inlet of the return passage is large, and the wall surface of the steering passage 14 is in a gap state. To compensate, the spacer 37 formed in the part of the steering passage 14 is sleeved into the recess 22 to complete the steering passage 14.

本發明滾珠螺釘於螺帽本體3所形成回流通路13，由於如上述形成，可以形成小徑螺帽本體3，同時形成精巧小型，而且利用套入於螺帽本體3的套合孔24之套筒7，可對滾珠9適當供給潤滑劑。亦即螺帽本體3所設回流通路13，包括套入螺帽本體3所形成套合孔24的套筒7之通孔32，和連通套合孔24的螺帽本體3所形成貫通孔23。在螺帽本體3 所形成套合孔24，與在螺帽本體3所形成貫通孔23之邊界，套入套合孔24的套筒7之端面27，形成於接觸段部20，段部20大小形成與套筒7厚度相同，而套筒7的通孔32所形成回流通路13，與以貫通孔23所形成回流通路13邊界，無段差，可順利連通。 The ball screw of the present invention forms the return passage 13 in the nut body 3. Because of the above-mentioned formation, the small diameter nut body 3 can be formed, and it is exquisite and small, and uses the fitting hole 24 inserted in the nut body 3 The sleeve 7 can appropriately supply lubricant to the balls 9. That is, the return passage 13 provided in the nut body 3 includes a through hole 32 of the sleeve 7 inserted into the sleeve hole 24 formed by the nut body 3, and a through hole formed by the nut body 3 communicating with the sleeve hole 24 twenty three. In the nut body 3 The boundary between the formed fitting hole 24 and the through hole 23 formed in the nut body 3, and the end face 27 of the sleeve 7 sleeved into the fitting hole 24 is formed in the contact section 20, and the size of the section 20 is equal to that of the sleeve 7 has the same thickness, and the through hole 32 of the sleeve 7 forms the return passage 13 and the through hole 23 forms the boundary of the return passage 13 without a step difference and can communicate smoothly.

又，在本發明滾珠螺釘中，套筒7形成比在螺帽本體3所形成回流通路13長度短，而末端轉向部6除了把螺帽本體3的凹部21和凹部22套合，還形成抓爪29，以抓取轉向通路溝35和螺旋軌道通路15側之滾珠9。又，螺釘軸1係形成在縱長方向延伸的一排螺旋溝11，且可旋轉支持於基部之圓軸型滾珠螺釘軸。端蓋4包括環狀端蓋本體5，具有內部回流板，形成可套入螺釘軸1之套合孔34(第三套合孔)，以及在該套合孔34周圍之複數安裝孔25；和末端轉向部6，與端蓋本體5形成整體構造，且形成轉向通路14和抓爪29。 In addition, in the ball screw of the present invention, the sleeve 7 is formed to be shorter than the return passage 13 formed in the nut body 3, and the end turning portion 6 is formed in addition to the recess 21 and the recess 22 of the nut body 3. The gripper 29 is used to grip the ball 9 on the side of the turning passage groove 35 and the spiral track passage 15. In addition, the screw shaft 1 is a round-shaft type ball screw shaft that is formed with a row of spiral grooves 11 extending in the longitudinal direction and is rotatably supported on the base. The end cap 4 includes an annular end cap body 5 with an internal return plate, forming a fitting hole 34 (third fitting hole) that can be inserted into the screw shaft 1, and a plurality of mounting holes 25 around the fitting hole 34; The end turning portion 6 and the end cap body 5 form an integral structure, and form the turning passage 14 and the gripper 29.

本發明滾珠螺釘如上述構造，因應螺釘軸1之旋轉，滾動體之滾珠9即在螺旋軌道通路15、螺帽本體3所設回流通路13，以及連通螺旋軌道通路15和回流通路13的轉向通路14構成之循環通路16滾動，螺帽2即在螺釘軸1上，藉滾珠9相對移動。關於本發明滾珠螺釘，滾珠螺釘規格為例如螺釘軸1之軸徑形成Φ 20，螺釘軸1在外周面10所形成螺旋溝11形成一排，導管可形成40mm。 The ball screw of the present invention has the above-mentioned structure. In response to the rotation of the screw shaft 1, the balls 9 of the rolling element are provided in the spiral track passage 15, the nut body 3, and the return passage 13 is connected to the spiral track passage 15 and the return passage 13. The circulation passage 16 formed by the steering passage 14 rolls, and the nut 2 is on the screw shaft 1 and moves relatively by the ball 9. Regarding the ball screw of the present invention, the specification of the ball screw is, for example, the shaft diameter of the screw shaft 1 forms Φ20, the screw shaft 1 forms a row of spiral grooves 11 formed on the outer peripheral surface 10, and the duct can be formed 40 mm.

又，套筒7以多孔質成型體形成，具有多孔部，以聚乙烯或聚丙烯合成樹脂微粒壓出熱固成型，且該合成樹脂微粒間保持連通狀態，於該多孔部飽浸該潤滑劑。因此，本發明滾珠螺釘由於利用套筒7形成回流通路13，在回流通路13滾動的滾珠9接觸到套筒7內壁時，套筒7所飽浸潤滑劑即供給滾珠9，可達成免潤滑保養。 In addition, the sleeve 7 is formed of a porous molded body, has a porous part, is extruded and thermoset molded with polyethylene or polypropylene synthetic resin particles, and the synthetic resin particles are kept in a communicating state, and the porous part is saturated with the lubricant . Therefore, since the ball screw of the present invention uses the sleeve 7 to form the return passage 13, when the balls 9 rolling in the return passage 13 contact the inner wall of the sleeve 7, the sleeve 7 is saturated with lubricant, that is, the balls 9 are supplied. Lubrication-free maintenance.

3‧‧‧螺帽本體 3‧‧‧Nut body

4‧‧‧端蓋 4‧‧‧End cap

5‧‧‧端蓋本體 5‧‧‧End cap body

6‧‧‧末端轉向部 6‧‧‧End steering part

7‧‧‧套筒 7‧‧‧Sleeve

9‧‧‧滾珠 9‧‧‧Ball

10‧‧‧外周面 10‧‧‧Outer peripheral surface

13‧‧‧回流通路 13‧‧‧Return path

14‧‧‧轉向通路 14‧‧‧Turning path

19‧‧‧端面 19‧‧‧End face

20‧‧‧段部 Section 20‧‧‧

21‧‧‧第一凹部 21‧‧‧First recess

22‧‧‧第二凹部 22‧‧‧Second recess

23‧‧‧貫通孔 23‧‧‧Through hole

24‧‧‧套合孔 24‧‧‧Sleeve hole

27‧‧‧套筒端面 27‧‧‧Sleeve end face

32‧‧‧通孔 32‧‧‧Through hole

33,34‧‧‧套合孔 33,34‧‧‧Sleeve hole

35‧‧‧轉向通路溝 35‧‧‧Turning channel groove

37‧‧‧間隔件 37‧‧‧Spacer

38‧‧‧壁面 38‧‧‧Wall

40‧‧‧端面 40‧‧‧end face

Claims (9)

一種滾珠螺釘，包括可旋轉螺釘，在外周面沿軸向形成第一螺旋溝；和筒狀螺帽，形成可套合該螺釘軸之第一套合孔，且在內周面沿軸向形成第二螺旋溝，與該第一螺旋溝對立；藉在該第一螺旋溝和該第二螺旋溝所形成螺旋軌道通路內滾動的複數滾動之滾珠，使該螺帽可在該螺釘軸上按縱長方向移動，其特徵為該螺帽包括筒狀螺帽本體，具有該第二螺旋溝，和按該縱長方向延伸供該滾珠滾動的回流通路；端蓋，分別配置在該螺帽本體的兩端部，具有末端轉向部，形成轉向通路，連通該螺旋軌道通路和該回流通路；以及套筒，套合於該螺帽本體形成之第二套合孔，具有形成該回流通路之通孔，該套筒係由飽浸潤滑劑的多孔質成型體所形成，該螺帽本體具有凸緣部，形成安裝孔，以安裝對應構件，在該螺帽本體的凸緣部相反側，形成第一凹部，連通形成該回流通路一部份之貫通孔，套入該末端轉向部，該螺帽本體所設該回流通路，包括該套筒之該通孔，可插經該螺帽本體所形成該第二套合孔，以及該貫通孔，連通該第二套合孔，形成於該螺帽本體，在該回流通路滾動之該滾珠接觸到該套筒時，該潤滑劑即供給於該滾珠者。 A ball screw, comprising a rotatable screw, forming a first spiral groove on the outer peripheral surface in the axial direction; and a cylindrical nut, forming a first sleeve hole that can be sleeved on the screw shaft, and the inner peripheral surface is formed in the axial direction The second spiral groove is opposite to the first spiral groove; by the plural rolling balls rolling in the spiral track path formed by the first spiral groove and the second spiral groove, the nut can be pressed on the screw shaft Longitudinal movement, characterized in that the nut includes a cylindrical nut body with the second spiral groove, and a return path extending in the longitudinal direction for the ball to roll; end caps are respectively arranged on the nut The two ends of the main body have end turning parts to form a turning passage, which communicates the spiral track passage and the return passage; and a sleeve which is sleeved on the second sleeve hole formed by the nut main body and has the return flow The through hole of the road, the sleeve is formed by a porous molded body saturated with lubricant, the nut body has a flange part, and an installation hole is formed to install the corresponding component, and the flange part of the nut body is opposite On the side, a first recess is formed, communicating with a through hole forming a part of the return passage, and sleeved in the end turning portion. The return passage provided in the nut body includes the through hole of the sleeve and can be inserted through The second fitting hole is formed by the nut body, and the through hole communicates with the second fitting hole and is formed in the nut body. When the ball rolling in the return path contacts the sleeve, the Lubricant is supplied to the ball. 如申請專利範圍第1項之滾珠螺釘，其中該螺帽本體之該凸緣部側，則形成第二凹部，連通該第二套合孔，套入該末端轉向部，尺寸比套入該末端轉向部之第一凹部大者。 For example, the ball screw of the first item of the scope of patent application, in which the flange portion side of the nut body is formed with a second recess, which communicates with the second fitting hole, and is inserted into the end turning portion, and the size is larger than that of the end The first recess of the steering part is larger. 如申請專利範圍第2項之滾珠螺釘，其中在該螺帽本體所形成該第二套合孔與該螺帽本體所形成該貫通孔之間，形成段部，與套入該第二套合孔之該套筒端面接觸，該段部大小形成與該套筒之厚度相同，在該套筒的該回流通路和該貫通孔的該回流通路之間，不形成段差即可順利連通者。 For the ball screw of item 2 of the scope of patent application, between the second fitting hole formed in the nut body and the through hole formed in the nut body, a section is formed to fit into the second fitting The end face of the sleeve of the hole is in contact, the size of the section is formed to be the same as the thickness of the sleeve, and the return passage of the sleeve and the return passage of the through hole can be smoothly communicated without forming a step . 如申請專利範圍第2項之滾珠螺釘，其中位於該螺帽本體的凸緣部相反側之該轉向通路，包括套入該第一凹部的該末端轉向部所形成之轉向通路溝，和該螺帽本體之該一凹部壁面，而位於該螺帽本體的該凸緣部側之該轉向通路，包括套入該第二凹部的該末端轉向部所形成之轉向通路溝，和套入該螺帽本體的該第二凹部之間隔件壁面者。 Such as the ball screw of the second item of the scope of patent application, wherein the steering passage located on the opposite side of the flange portion of the nut body includes a steering passage groove formed by the end turning portion of the first recess, and the screw The wall surface of the concave portion of the cap body, and the turning passage located on the flange portion side of the nut body includes a turning passage groove formed by the end turning portion of the second concave portion, and the nut The wall surface of the spacer of the second recess of the body. 如申請專利範圍第4項之滾珠螺釘，其中該滾動體之該滾珠，係因應該螺釘軸之旋轉，在該螺旋軌道通路、該螺帽本體所設該回流通路，以及 連通該螺旋軌道通路和該回流通路的轉向通路所構成循環通路滾動，該螺帽即在該螺釘軸上，藉該滾珠而相對移動者。 For example, the ball screw of item 4 of the scope of patent application, wherein the ball of the rolling element is provided in the spiral track path, the return path of the nut body in response to the rotation of the screw shaft, and The circulation path formed by the turning path connecting the spiral track path and the return path rolls, and the nut is on the screw shaft and moves relatively by the ball. 如申請專利範圍第4項之滾珠螺釘，其中該套筒形成比在該螺帽本體形成的該第二螺旋溝在該縱長方向之長度為短，該末端轉向部除分別套合於該螺帽本體的該第一凹部和該第二凹部外，又具有抓爪，可在該轉向通路溝和該螺旋軌道通路側抓住該滾珠者。 For example, the ball screw of item 4 of the scope of patent application, wherein the sleeve is formed shorter than the length of the second spiral groove formed in the nut body in the longitudinal direction, and the end turning part is not only fitted to the screw respectively Outside the first concave portion and the second concave portion of the cap body, there are gripping claws that can catch the ball on the side of the steering passage groove and the spiral track passage. 如申請專利範圍第6項之滾珠螺釘，其中該端蓋包括環狀端蓋本體，形成可插該螺釘軸之第三套合孔，和在該第三套合孔周圍之複數安裝孔，可安裝於該螺帽本體；以及該末端轉向部，形成從該端蓋本體端面凸出之一體構造，且形成該轉向通路和該抓爪者。 For example, the ball screw of item 6 of the scope of patent application, wherein the end cover includes a ring-shaped end cover body, forming a third fitting hole for inserting the screw shaft, and a plurality of mounting holes around the third fitting hole. It is installed on the nut body; and the end turning portion forms a body structure protruding from the end surface of the end cap body, and forms the turning passage and the gripper. 如申請專利範圍第1項之滾珠螺釘，其中該螺釘軸形成按該縱長方向延伸之一排該第一螺旋溝，且可旋轉支持於基底之圓軸型滾珠螺釘軸者。 For example, the ball screw of the first item in the scope of the patent application, wherein the screw shaft forms a row of the first spiral grooves extending in the longitudinal direction and is rotatably supported on the base of the round ball screw shaft. 如申請專利範圍第1項之滾珠螺釘，其中該套筒係由聚乙烯或聚丙烯合成樹脂微粒壓出熱固成型，形成多孔質成型體，具有多孔部，在該合成樹脂微粒間保持連通狀態，而於該多孔部飽浸潤滑劑者。 For example, the ball screw of the first item in the scope of patent application, wherein the sleeve is made of polyethylene or polypropylene synthetic resin particles by extruding and thermosetting molding to form a porous molded body with a porous part, and the synthetic resin particles are kept in a connected state , And the porous part is saturated with lubricant.
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KR20170113365A (en) 2017-10-12
JP2017180666A (en) 2017-10-05

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