JPS6156055B2 - - Google Patents

Info

Publication number
JPS6156055B2
JPS6156055B2 JP58130905A JP13090583A JPS6156055B2 JP S6156055 B2 JPS6156055 B2 JP S6156055B2 JP 58130905 A JP58130905 A JP 58130905A JP 13090583 A JP13090583 A JP 13090583A JP S6156055 B2 JPS6156055 B2 JP S6156055B2
Authority
JP
Japan
Prior art keywords
base
sliding
gib
slide
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP58130905A
Other languages
Japanese (ja)
Other versions
JPS6025628A (en
Inventor
Hiroshi Teramachi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP58130905A priority Critical patent/JPS6025628A/en
Publication of JPS6025628A publication Critical patent/JPS6025628A/en
Publication of JPS6156055B2 publication Critical patent/JPS6156055B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F16C29/0614—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only
    • F16C29/0621—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only for supporting load in essentially two directions, e.g. by multiple points of contact or two rows of rolling elements
    • F16C29/0626—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only for supporting load in essentially two directions, e.g. by multiple points of contact or two rows of rolling elements with rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/262—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to adjust the distance between the relatively slidable members
    • 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
    • F16C29/001—Bearings for parts moving only linearly adjustable for alignment or positioning
    • 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
    • F16C29/008—Systems with a plurality of bearings, e.g. four carriages supporting a slide on two parallel rails
    • 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
    • F16C29/063—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body, e.g. a carriage or part thereof, provided between the legs of a U-shaped guide rail or track
    • 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
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/064—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with two rows of balls, one on each side of the rail
    • 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
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0669—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the main body of the U-shaped carriage is an assembly of at least three major parts, e.g. an assembly of a top plate with two separate legs attached thereto in the form of bearing shoes
    • F16C29/0673—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the main body of the U-shaped carriage is an assembly of at least three major parts, e.g. an assembly of a top plate with two separate legs attached thereto in the form of bearing shoes with rollers
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Description

【発明の詳細な説明】 この発明は、NCマシン等の工作機械における
Ｘ・Ｙ・Ｚ軸、自動工具交換装置、自動溶接機、
射出成形機、工業用ロボツト等、各種の一般産業
機械のスライド部において多用される直線摺動用
テーブルアツセンブリに関する。[Detailed Description of the Invention] This invention relates to X, Y, and Z axes in machine tools such as NC machines, automatic tool changers, automatic welding machines,
This invention relates to a linear sliding table assembly that is frequently used in the sliding parts of various general industrial machines such as injection molding machines and industrial robots.

一般に、このようなスライド部で使用される直
線摺動用テーブルにおいては、高精度に組み込む
ことができ、しかも、その位置決めや繰返し精度
が良くて寿命の長いものであることが要請され
る。 Generally, a linear sliding table used in such a sliding part is required to be able to be assembled with high precision, to have good positioning and repeatability, and to have a long life.

しかしながら、直線摺動用テーブルに組み込ま
れて軌道台と摺動台との間で荷重を負荷するボー
ルやローラー等の転動体にがたつきがあると、往
復運動の方向転換時に慣性モーメントによるハン
マー作用やこじり荷重によつて瞬間的に数倍の衝
撃荷重が作用し、寿命を短くする原因になるほ
か、がたつきの分だけ位置決めや繰返し精度が悪
くなる。 However, if there is wobbling in the rolling elements such as balls and rollers that are incorporated into the linear sliding table and apply the load between the track and the slide, the hammer effect due to the moment of inertia occurs when the direction of reciprocating motion is changed. An impact load several times higher than that applied instantaneously is caused by the wobbling load, which shortens the life of the product, and also deteriorates positioning and repeatability due to the rattling.

そこで、この種の直線摺動用テーブルにおいて
は、上記がたつきを解消するために転動体に予圧
を付与し、全転動体の当り率を高め、これによつ
て負荷容量や寿命の向上を図ることが行なわれて
いる。 Therefore, in this type of linear sliding table, in order to eliminate the above-mentioned rattling, a preload is applied to the rolling elements to increase the contact ratio of all rolling elements, thereby improving load capacity and life. things are being done.

このようなことは、摺動台に回転方向ひねりを
与えることにより摺動台と軌導台との間で荷重を
負荷する転動体に予圧が付与されるようなベアリ
ング構成体を備えたテーブルアツセンブリについ
ても全く同様であり、本発明者は、先に、予圧を
付与する手段として、摺動台と取付台との間にシ
ムを介装する方法や摺動台上面をテーパ面にする
方法を提案した（特願昭57−049170号）。 This problem occurs when a table assembly is equipped with a bearing structure that applies a preload to the rolling elements that apply a load between the slide table and the track base by giving a rotational twist to the slide table. The same applies to the assembly, and the present inventor first proposed a method of interposing a shim between the sliding base and the mounting base and a method of making the top surface of the sliding base a tapered surface as a means of applying preload. (Special Application No. 57-049170).

しかしながら、摺動台と取付台との間にシムを
介装する方法では、目的の予圧に調整するために
介装されるシムの増減を行なわなければならず、
その都度繰り返して摺動台と取付台との組付作業
を行なわなければならなくなつて予圧の調整が極
めて煩雑であり、しかも、装置に組み込んだ後に
は分解しない限り予圧の調整を行うことができな
いという問題があつた。また、摺動台上面をテー
パ面にする方法では、摺動台上面に面倒なテーパ
加工を施さなければならなくなつてそれだけコス
ト高になるほか、用途に応じて予圧の調整を行う
というようなことができず、ベアリング構成体の
汎用性が制限され、しかも、装置に組み込んだ後
に予圧の調整を行うことができない。 However, in the method of interposing shims between the sliding base and the mounting base, it is necessary to increase or decrease the number of shims installed in order to adjust the desired preload.
Adjusting the preload is extremely complicated as it is necessary to repeatedly assemble the sliding base and the mounting base each time, and furthermore, it is impossible to adjust the preload after it is installed in the device unless it is disassembled. The problem was that I couldn't do it. In addition, with the method of making the top surface of the slide table a tapered surface, the top surface of the slide table must be tapered, which increases costs, and the preload must be adjusted depending on the application. This limits the versatility of the bearing structure, and furthermore, the preload cannot be adjusted after it is installed in a device.

さらに、予圧の付与及び調整を行うことができ
るベアリング構成体として、下方に向けて開口す
る凹部を有して断面略Ｃ形状に形成された摺動台
の袖部内面側にはその全長に亘つて内方に向けて
開口する凹溝を形成し、この凹溝内には上記凹部
内に位置する軌道台の転走溝に相対応する負荷ボ
ール溝を備えたベアリングブロツクを配設し、こ
のベアリングブロツクと摺動台との間にベアリン
グブロツクを摺動台幅方向に進退させる予圧調整
手段を介装したものが提案されている（実開昭53
−108677号公報）。 Furthermore, as a bearing structure that can apply and adjust preload, the sleeve part of the sliding base, which has a downwardly opening recessed part and is formed in a substantially C-shaped cross section, has a sleeve part that extends over its entire length. A concave groove opening inward is formed in the concave groove, and a bearing block is disposed within the concave groove, and the bearing block is provided with a load ball groove corresponding to the rolling groove of the wayway positioned in the concave portion. It has been proposed that a preload adjustment means is installed between the bearing block and the slide table to move the bearing block forward and backward in the width direction of the slide table (Utility Model No. 53).
-108677).

しかしながら、このベアリング構成体において
も、その予圧調整手段として、ベアリングブロツ
クと凹溝の縦壁との間に一対のテーパギブを介装
し、これらのテーパギブを摺動台の進行方向前後
端側カバーに取付けた予圧調整ねじで進退させて
予圧の調整を行う方法や凹溝の縦壁を貫通するボ
ルトでベアリングブロツクを弾性変形させること
によりこれを進退させる方法が採用されており、
いずれにしても摺動台に対してその横方向から予
圧調整をしなければならず、テーブルアツセンブ
リとして装置に組込んだ後には周辺機械装置との
関係でほとんどの場合に予圧の調整ができなくな
るという問題がある。 However, in this bearing structure as well, a pair of taper gibs are interposed between the bearing block and the vertical wall of the concave groove as preload adjustment means, and these taper gibs are attached to the front and rear end covers of the slide table in the direction of movement. The preload is adjusted by moving the installed preload adjustment screw forward or backward, or the bearing block is moved forward or backward by elastically deforming the bearing block with a bolt that passes through the vertical wall of the groove.
In any case, the preload must be adjusted from the lateral direction of the slide table, and in most cases the preload cannot be adjusted after it is assembled into the device as a table assembly due to the relationship with the peripheral machinery. The problem is that it disappears.

この発明は、かかる観点に鑑み、摺動台とこの
摺動台上面に取付けられる取付台との間にテーパ
ギブを介装し、このテーパギブの基端側と先端側
との間における肉厚の差を利用して摺動台と取付
台との間を締結ボルトで結合した際に摺動台に回
転方向ひねりを与え、これによつて摺動台と軌道
台との間で荷重を負荷するボールやローラー等の
転動体に予圧を付与することができ、かつ、この
テーパギブを摺動台上面幅方向に沿つて進退させ
ることにより容易に予圧の大きさを調整すること
ができる直線摺動用テーブルアツセンブリを提供
するものである。 In view of this point of view, the present invention provides a tapered gib interposed between the sliding base and a mounting base attached to the upper surface of the sliding base, and a difference in wall thickness between the proximal end side and the distal end side of the tapered gib. A ball that applies a twist in the rotating direction to the slide table when the slide table and the mounting base are connected using fastening bolts, thereby applying a load between the slide table and the track base. A linear sliding table head that can apply preload to rolling elements such as rollers and rollers, and that can easily adjust the amount of preload by moving the tapered gib forward and backward along the width direction of the top surface of the slide table. It provides an assembly.

以下、添付図面に示す実施例に基づいて、本発
明の直線摺動用テーブルアツセンブリを説明す
る。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The linear sliding table assembly of the present invention will be described below based on embodiments shown in the accompanying drawings.

第１図ないし第４図において、本発明の実施例
に係る直線摺動用テーブルアツセンブリが示され
ている。このテーブルアツセンブリは、一対の取
付基準面７を有するベツド１と、このベツド１の
各取付基準面７に取付ボルト８によつて取付けら
れた一対の軌道台２と、これら各軌道台２に案内
されて直線往復運動をする２対の摺動台３と、こ
れら各摺動台３に形成された一対の無限軌道９内
を循環して上記軌道台２と摺動台３との間で荷重
を負荷する多数のボール４と、上記各摺動台３の
上面間に架設され、各摺動台３幅方向対の締結ボ
ルト１０ａ，１０ｂで固定される取付台５と、上
記各摺動台３と取付台５との間に介装されたテー
パギブ６とで構成されている。 1-4, a linear sliding table assembly according to an embodiment of the present invention is shown. This table assembly includes a bed 1 having a pair of mounting reference surfaces 7, a pair of tracks 2 attached to each mounting reference surface 7 of the bed 1 with mounting bolts 8, and a pair of tracks 2 attached to each of the tracks 2. Two pairs of sliding tables 3 that are guided to make a linear reciprocating motion, and a pair of endless tracks 9 formed on each of these sliding tables 3 circulate between the above-mentioned orbital tables 2 and sliding tables 3. A large number of balls 4 that apply a load, a mounting base 5 that is installed between the upper surfaces of each of the sliding bases 3 and fixed with a pair of fastening bolts 10a and 10b in the width direction of each of the sliding bases 3, and each of the sliding bases It is composed of a tapered gib 6 interposed between a base 3 and a mounting base 5.

上記テーパギブ６は、第２図、第３図及び第５
図に示すように、その平面形状が上記摺動台３上
面と略々同じ長方形状に形成されていると共に、
その肉厚d1，d2についてはその基端６ａから先端
６ｂに向けて漸次薄くなるように形成され、か
つ、上記各締結ボルト１０ａ，１０ｂが摺動可能
に貫通すると共に前後方向、すなわち基端６ａか
ら先端６ｂに向けて延びる長孔１１ａ，１１ｂが
形成されている。そして、このテーパギブ６は、
各摺動台３上面と取付台５下面との間に、その前
後方向を摺動台３上面幅方向に合せて介装されて
おり、各締結ボルト１０ａ，１０ｂを緩めること
によりこのテーパギブ６を、その前後方向、すな
わち摺動台３上面幅方向に沿つてその基端６ａが
摺動台３上面から外れない範囲内で、かつ、テー
パギブ６に形成した各長孔１１ａ，１１ｂが許容
する範囲内で、進退させることができるようにな
つている。 The taper gib 6 is shown in FIGS. 2, 3, and 5.
As shown in the figure, its planar shape is formed into a rectangular shape that is approximately the same as the upper surface of the sliding table 3, and
The wall thicknesses d 1 and d 2 are formed so as to gradually become thinner from the base end 6a to the distal end 6b, and each of the fastening bolts 10a and 10b slidably penetrates therethrough, and also extends in the front-rear direction, that is, the base end 6b. Elongated holes 11a and 11b are formed extending from the end 6a to the tip 6b. And this taper give 6 is
The taper gib 6 is interposed between the upper surface of each sliding table 3 and the lower surface of the mounting table 5 with its front and back direction aligned with the width direction of the upper surface of the sliding table 3, and by loosening each fastening bolt 10a, 10b. , within the range in which the base end 6a does not come off the top surface of the slide table 3 in the front-rear direction, that is, along the width direction of the top surface of the slide table 3, and within the range allowed by each of the elongated holes 11a and 11b formed in the taper gib 6. It is now possible to advance and retreat within the space.

この実施例において、上記取付台５にはその側
面にサイドプレート１２が設けられており、この
サイドプレート１２と上記テーパギブ６の基端６
ａ側とにはそれぞれ同一軸心を有すると共に互い
にピツチ差を有するねじ孔１３ａ，１３ｂが穿設
されている。また、これらサイドプレート１２と
テーパギブ６との間には両端部に上記各ねじ孔１
３ａ，１３ｂに螺合するねじ部１５ａ，１５ｂを
有する予圧調整ボルト１４が設けられており、こ
の予圧調整ボルト１４を回動させることによりテ
ーパギブ６の微調整を行うことができるようにな
つている。さらに、取付台５の一側方、すなわち
第２図において図面上左側に位置するサイドプレ
ート１２は、その下端が摺動台３の側方まで延び
ており、この下端部には位置決め用の押圧ねじ１
６が設けられ、締結ボルト１０ａ，１０ｂで摺動
台３と取付台５との間を締結する際に上記押圧ね
じ１６で摺動台３の一側方を押圧し、摺動台３の
他側方を取付台５に形成した垂直基準面１７に押
圧してその位置決めを行うようになつている。 In this embodiment, the mounting base 5 is provided with a side plate 12 on its side surface, and the side plate 12 and the base end 6 of the tapered gib 6
On the a side, screw holes 13a and 13b are bored, each having the same axis and having a different pitch. In addition, there are screw holes 1 at both ends between the side plate 12 and the taper gib 6.
A preload adjustment bolt 14 having threaded portions 15a and 15b that are screwed into the preload adjustment bolts 3a and 13b is provided, and by rotating the preload adjustment bolt 14, the taper gib 6 can be finely adjusted. . Furthermore, the side plate 12 located on one side of the mounting base 5, that is, on the left side in FIG. screw 1
6 is provided, and when fastening between the sliding base 3 and the mounting base 5 with the fastening bolts 10a and 10b, the pressing screw 16 presses one side of the sliding base 3, and the other side of the sliding base 3 is pressed. The side is pressed against a vertical reference surface 17 formed on the mounting base 5 to determine its position.

また、この実施例において、上記軌道台２、摺
動台３及び多数のボール４は、第６図ないし第１
０図に示すように、軌道台２がその一方の肩部と
他方の側部とにそれぞれ上向及び下向の転走溝１
８を有し、また、摺動台３が水平部１９とその一
端より垂下する袖部２０とを有して断面略々Ｌ字
状に形成されていると共に水平部１９及び袖部２
０には上記各転走溝１８に対応する下向及び上向
の負荷ボール溝２１と各負荷ボール溝２１に沿つ
て穿設された逃げボール孔２２とが設けられてお
り、さらに、上記摺動台３の前後両端には内面側
に案内溝２４を有する蓋体２３が取付けられてお
り、上記案内溝２４が上記負荷ボール溝２１と逃
げボール孔２２との間を互いに連通してボール４
の無限軌道９を構成し、各ボール４は摺動台３の
負荷ボール溝２１と軌道台２の転走溝１８との間
で荷重を負荷するようになつている。 Further, in this embodiment, the track base 2, the sliding base 3, and the large number of balls 4 are shown in FIGS. 6 to 1.
As shown in Figure 0, the track 2 has upward and downward rolling grooves 1 on one shoulder and the other side, respectively.
8, and the sliding table 3 has a horizontal portion 19 and a sleeve portion 20 hanging from one end thereof, and is formed into a substantially L-shaped cross section.
0 is provided with downward and upward load ball grooves 21 corresponding to each of the rolling grooves 18 and relief ball holes 22 bored along each of the load ball grooves 21. A cover body 23 having a guide groove 24 on the inner surface side is attached to both front and rear ends of the moving table 3, and the guide groove 24 communicates between the load ball groove 21 and the escape ball hole 22, and the ball 4
Each ball 4 is adapted to apply a load between the load ball groove 21 of the slide table 3 and the rolling groove 18 of the way table 2.

さらに、この実施例においては、テーパギブ６
が介装される摺動台３上面と取付台５の下面とが
互いに平行な面となつており、これら摺動台３と
取付台５との間で上記テーパギブ６はその基端６
ａがポイントP1からポイントPP2までの範囲内、
すなわち基端６ａが摺動台３上面から外れること
なく、このテーパギブ６に設けた長孔１１ａが許
容する範囲で前後方向に進退し、これによつて各
締結ボルト１０ａ，１０ｂを締め付けた際に摺動
台３がテーパギブ６の基端６ａを中心にして回転
する回転方向ひねりの程度（締め代θ）をθ１か
らθ２まで変化させ、｜θ１−θ２｜の締め代の
差に応じてボール４に作用する予圧を増減するこ
とができる。 Furthermore, in this embodiment, the taper give 6
The upper surface of the sliding table 3 and the lower surface of the mounting table 5, on which the sliding table 3 is interposed, are parallel to each other.
a is within the range from point P 1 to point PP 2 ,
In other words, the base end 6a moves forward and backward within the range allowed by the long hole 11a provided in the taper gib 6 without coming off the top surface of the slide table 3, and thereby when each fastening bolt 10a, 10b is tightened. The degree of rotational twist (tightening allowance θ) in which the sliding table 3 rotates around the base end 6a of the taper gib 6 is varied from θ 1 to θ 2 , and the difference in the tightening allowance of |θ 1 −θ 2 | The preload acting on the ball 4 can be increased or decreased accordingly.

また、上記実施例においては、摺動台３上面と
取付台５下面とが互いに平行な面となつているの
で、テーパギブ６を進退させてもベツド１の取付
基準面７から取付台５上面までの高さＨが変化せ
ず、この高さＨを変化させることなく予圧の増減
を行うことができる。 In addition, in the above embodiment, since the upper surface of the sliding table 3 and the lower surface of the mounting table 5 are parallel surfaces to each other, even when the taper gib 6 is moved back and forth, the distance from the mounting reference surface 7 of the bed 1 to the upper surface of the mounting table 5 is parallel to each other. The height H of the preload does not change, and the preload can be increased or decreased without changing the height H.

従つて、上記実施例の直線摺動用テーブルアツ
センブリによれば、このテーブルアツセンブリの
組立時に摺動台３と取付台５との間にテーパギブ
６を介装し、これら両者の間を締結する各締結ボ
ルト１０ａ，１０ｂを締め付けることにより、上
記テーパギブ６が有するその基端６ａ側と先端６
ｂ側との間の肉厚の差d1−d2の大きさに応じて摺
動台３に矢印Ｙ方向の回転方向ひねりを与えるこ
とができ、これによつて軌道台２と摺動台３との
間で荷重を負荷するボール４に所定の予圧を与え
ることができ、また、上記各締結ボルト１０ａ，
１０ｂを緩めた状態で予圧調整ボルト１４を回動
し、テーパギブ６をその前後方向に進退させて再
度各締結ボルト１０ａ，１０ｂを締め付けること
により、ボール４に作用する予圧を調整すること
ができる。 Therefore, according to the linear sliding table assembly of the above embodiment, the taper gib 6 is interposed between the sliding base 3 and the mounting base 5 when assembling the table assembly, and the two are fastened together. By tightening each fastening bolt 10a, 10b, the base end 6a side and the tip 6 of the taper gib 6 are tightened.
Depending on the size of the wall thickness difference d 1 - d 2 between the side b and the sliding table 3, it is possible to give the sliding table 3 a rotational twist in the direction of the arrow Y. A predetermined preload can be applied to the ball 4 that loads between the bolts 10a and 3.
The preload acting on the ball 4 can be adjusted by rotating the preload adjustment bolt 14 with the bolt 10b loosened, moving the tapered gib 6 forward and backward, and tightening each fastening bolt 10a, 10b again.

なお、上記実施例においては、テーパギブ６を
その前後方向に進退させるための手段として、サ
イドプレート１２と予圧調整ボルト１４とを採用
しているが、これらの手段は必ずしも必要ではな
く、例えば金槌でたたいて押し込んだり、締結ボ
ルト１０ａ，１０ｂを緩めて押し込んだり引き出
したりすることにより、テーパギブを進退させて
もよい。 In the above embodiment, the side plate 12 and the preload adjustment bolt 14 are used as means for advancing and retracting the taper gib 6 in the longitudinal direction, but these means are not necessarily necessary. The taper gib may be moved forward or backward by hitting it and pushing it in, or by loosening the fastening bolts 10a and 10b and pushing it in or pulling it out.

また、ベツド１の取付基準面７から取付台５上
面までの高さＨをテーパギブ６の前後方向の位置
調節によつて調整するには、第１２図に示すよう
に、摺動台３上面と取付台５下面とを互いに非平
行の関係にすればよく、テーバギブ６の基端６ａ
がその前後方向に進退することにより、上記高さ
Ｈを所定の範囲内で調整することができる。な
お、第１２図においては、摺動台３上面と取付台
５下面との間の間隔がテーパギブ６の基端６ａ側
において大きく先端６ｂ側において小さくなつて
いるが、反対に、上記間隔をテーパギブ６の基端
６ａ側において小さく先端６ｂ側において大きく
形成することもできる。また、この第１２図の場
合においても、テーパギブ６を前後方向に進退さ
せることにより、摺動台３の回転方向ひねりの程
度を変化させることができ、これに応じてボール
４に作用する予圧を増減させることができる。 In addition, in order to adjust the height H from the mounting reference surface 7 of the bed 1 to the top surface of the mounting base 5 by adjusting the position of the tapered gib 6 in the front-rear direction, as shown in FIG. The base end 6a of the taper gib 6 may be placed in a non-parallel relationship with the lower surface of the mounting base 5.
By moving back and forth in the front and rear directions, the height H can be adjusted within a predetermined range. In addition, in FIG. 12, the distance between the upper surface of the slide table 3 and the lower surface of the mounting base 5 is large on the proximal end 6a side of the taper gib 6 and small on the distal end 6b side. It is also possible to form a small size on the proximal end 6a side of 6 and a large size on the distal end 6b side. Also, in the case of FIG. 12, by moving the taper gib 6 forward and backward, the degree of twist in the rotational direction of the sliding table 3 can be changed, and the preload acting on the ball 4 can be changed accordingly. It can be increased or decreased.

さらに、第１３図ないし第１５図において、上
記テーパギブ６の変形例が示されている。第１３
図及び第１４図に示したテーパギブ６は、その基
端６ａ側に位置する各長孔１１ａを基準にして、
摺動台３上面に接する側の面における基端６ａ側
の左右両側コーナー部にその角部に向けて漸次肉
薄となるテーパ部２５を有し、このテーパギブ６
を各摺動台３上面と取付台５下面との間に介装し
て締結ボルト１０ａ，１０ｂにより締結した際
に、テーパギブ６の各テーパ部２５に対応する各
摺動台３のコーナー部分が各テーパ部２５の傾斜
角度に応じて吊り上げられ、各摺動台３に弾性変
形が生じ、ボール４の無限軌道９にいわゆるクラ
ウニング効果（負荷域の中央部分において狭く、
出入口側において広くなつており、ボールの循環
が円滑になる）を発揮させることができる。そし
て、第１５図に示したテーパギブ６は、その幅寸
法が各摺動台３と取付台５との間を締結する各対
の締結ボルト１０ａ，１０ｂ間の間隔寸法より小
さく、これら各対の締結ボルト１０ａ，１０ｂの
間に位置するように配設されている。この第１５
図の場合においても各摺動台３の前後両端部側を
変形させて無限軌道９にいわゆるクラウニング効
果を発揮させることができる。なお、前者におい
ては正確なクラウニング量を設定することがで
き、また、後者においては簡便であるという特長
を備えているものである。 Further, in FIGS. 13 to 15, modified examples of the taper gib 6 are shown. 13th
The tapered gib 6 shown in the figures and FIG.
Tapered portions 25 that become gradually thinner toward the corners are provided at both left and right corner portions on the base end 6a side of the surface in contact with the upper surface of the slide table 3, and this taper give 6
is interposed between the upper surface of each sliding table 3 and the lower surface of the mounting table 5 and fastened with the fastening bolts 10a and 10b, the corner portion of each sliding table 3 corresponding to each tapered part 25 of the taper gib 6 It is lifted according to the inclination angle of each tapered part 25, elastic deformation occurs in each sliding table 3, and the endless track 9 of the ball 4 has a so-called crowning effect (a narrowing in the central part of the load area).
It is wider on the entrance/exit side, allowing smooth circulation of the balls. The width of the tapered gib 6 shown in FIG. 15 is smaller than the distance between each pair of fastening bolts 10a and 10b that fasten between each sliding base 3 and the mounting base 5. It is arranged so as to be located between the fastening bolts 10a and 10b. This 15th
Also in the case shown in the figure, by deforming both the front and rear ends of each sliding table 3, the endless track 9 can exhibit a so-called crowning effect. The former method has the advantage of being able to set an accurate crowning amount, and the latter method is simple.

次に、第１６図ないし第１８図は、上記実施例
において軌道台２、摺動台３及び多数のボール４
で構成されたベアリング構成体の変形例を示すも
のである。第１６図においては転動体として多数
のボール４に代えて多数の球面コロ４ａが使用さ
れており、第１７図においては摺動台３が水平部
１９とその両端に袖部２０とを有して断面略コ字
状に形成されていると共に軌道台２側の転走溝１
８と摺動台３側の負荷ボール溝２１とがそれぞれ
45゜の角度で傾斜しながら互いに相対面している
もので、また、第１８図においては摺動台３が第
１７図の場合と同様に断面略コ字状に形成されて
いると共に軌道台２側の転走溝１８と摺動台３側
の負荷ボール溝２１とがいずれも垂直な面に形成
されて互いに相対面しているものである。これら
第１６図ないし第１８図に示す直線摺動用テーブ
ルアツセンブリにおいても、上記実施例の場合と
全く同様に、球面コロ４ａ又はボール４に対して
予圧を付与し、また、この予圧の大きさを調整す
ることができる。 Next, FIGS. 16 to 18 show the track base 2, sliding base 3, and a large number of balls 4 in the above embodiment.
This shows a modification of the bearing structure made up of the following. In FIG. 16, a large number of spherical rollers 4a are used as rolling elements instead of the large number of balls 4, and in FIG. 17, the sliding table 3 has a horizontal portion 19 and sleeve portions 20 at both ends. The rolling groove 1 on the wayside 2 side is formed to have a substantially U-shaped cross section.
8 and the load ball groove 21 on the sliding table 3 side, respectively.
They face each other while being inclined at an angle of 45 degrees, and in FIG. 18, the sliding table 3 is formed with a substantially U-shaped cross section as in the case of FIG. Both the rolling groove 18 on the second side and the load ball groove 21 on the sliding table 3 side are formed on vertical surfaces and face each other. In these linear sliding table assemblies shown in FIGS. 16 to 18, a preload is applied to the spherical rollers 4a or balls 4, and the magnitude of this preload is can be adjusted.

以上の通り、本発明によれば、摺動台と取付台
との間に介装したテーパギブによつてこのテーパ
ギブの基端側と先端側との間の肉厚の差に応じて
軌道台と摺動台との間で荷重を負荷するボールや
ローラー等の転動体に所望の予圧を付与すること
ができ、また、このテーパギブをその前後方向に
進退させることにより予圧の調整も行うことがで
きる。しかも、上記予圧の調整は、テーブルアツ
センブリの組立完了後に摺動台と取付台との間を
締結する各締結ボルトを緩めるだけで容易に行う
ことができ、テーブルアツセンブリの使用中にさ
らに予圧調整が必要となつたような場合にも対応
することができて極めて便利である。 As described above, according to the present invention, the taper gib interposed between the sliding base and the mounting base allows the track base to be adjusted according to the difference in wall thickness between the base end side and the distal end side of the taper gib. Desired preload can be applied to rolling elements such as balls and rollers that carry loads between them and the sliding table, and the preload can also be adjusted by moving this taper gib forward and backward. . Moreover, the above preload can be easily adjusted by simply loosening each bolt that connects the sliding base and the mounting base after the table assembly is assembled, and the preload can be further adjusted while the table assembly is in use. This is extremely convenient as it can be used in situations where adjustments are required.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の実施例に係る直線摺動用テー
ブルアツセンブリの平面図、第２図は第１図の
−線断面図、第３図は第２図の−線断面
図、第４図は第２図の−矢視図、第５図は第
２図のテーパギブの斜視図、第６図はこの実施例
で使用されたベアリング部分の正面図、第７図は
第６図の平面図、第８図は第６図の側面図、第９
図は第７図の−線断面図、第１０図は第６図
の−線断面図、第１１図はテーパギブを前後
方向に進退させた場合の状態を説明する説明図、
第１２図は第１１図の変形例の説明図、第１３図
及び第１４図並びに第１５図はテーパギブの変形
例を示す第４図及び第５図並びに第３図とそれぞ
れ同様の矢視図、斜視図、断面図、第１６図ない
し第１８図はベアリング構成体の変形例を示す部
分断面図である。 符号説明、１……ベツド、２……軌道台、３…
…摺動台、４……ボール（転動体）、４ａ……球
面コロ（転動体）、５……取付台、６……テーパ
ギブ、６ａ……基端、６ｂ……先端、７……取付
基準面、９……無限軌道、１０ａ，１０ｂ……締
結ボルト、１１ａ，１１ｂ……長孔、１２……サ
イドプレート、１３ａ，１３ｂ……ねじ孔、１４
……予圧調整ボルト、１５ａ，１５ｂ……ねじ
部、２５……テーパ部。 FIG. 1 is a plan view of a linear sliding table assembly according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, FIG. 3 is a cross-sectional view taken along the line -- in FIG. 2, and FIG. 5 is a perspective view of the taper gib in FIG. 2, FIG. 6 is a front view of the bearing part used in this example, and FIG. 7 is a plan view of FIG. 6. , Figure 8 is a side view of Figure 6, and Figure 9 is a side view of Figure 6.
The figure is a cross-sectional view taken along the - line in FIG. 7, FIG. 10 is a cross-sectional view taken along the - line in FIG.
FIG. 12 is an explanatory diagram of a modification of FIG. 11, and FIGS. 13, 14, and 15 are views similar to FIGS. 4, 5, and 3, respectively, showing modifications of the taper gib. , a perspective view, a sectional view, and FIGS. 16 to 18 are partial sectional views showing modified examples of the bearing structure. Symbol explanation, 1... bed, 2... orbit platform, 3...
...Sliding base, 4...Ball (rolling element), 4a...Spherical roller (rolling element), 5...Mounting base, 6...Taper gib, 6a...Base end, 6b...Tip, 7...Mounting Reference surface, 9... Endless track, 10a, 10b... Fastening bolt, 11a, 11b... Long hole, 12... Side plate, 13a, 13b... Screw hole, 14
...Preload adjustment bolt, 15a, 15b...Threaded portion, 25...Tapered portion.

Claims (1)

【特許請求の範囲】 １ 一対の取付基準面を有するベツドと、このベ
ツドの各取付基準面に取付けられる一対の軌道台
と、各軌道台に案内されて直線往復運動をする複
数の摺動台と、これら各摺動台に形成された一対
の無限軌道内を循環して上記各軌道台と各摺動台
との間で荷重を負荷する多数の転動体と、上記各
摺動台の上面間に架設され、各摺動台幅方向対の
締結ボルトで固定される取付台とからなり、上記
各摺動台上面と取付台下面との間には肉厚が基端
から先端に向けて漸次薄くなるように形成された
テーパギブを上記各摺動台上面幅方向に向けて介
装し、これら各テーパギブをその基端が各摺動台
上面から外れない範囲内で各摺動台上面幅方向に
沿つて進退させ、上記各転動体に作用する予圧の
調整を行うことを特徴とする直線摺動用テーブル
アツセンブリ。 ２ 取付台はその幅方向側面にサイドプレートを
有し、このサイドプレートとテーパギブの基端側
には互いに同一軸心を有すると共に互いにピツチ
差を有するねじ孔が穿設され、これらサイドプレ
ートとテーパギブとの間が両端部に上記各ねじ孔
に螺合するねじ部を備えた予圧調整ボルトで連結
されており、この予圧調整ボルトによりテーパギ
ブの微調整を行う特許請求の範囲第１項に記載の
直線摺動用テーブルアツセンブリ。 ３ テーパギブは、各摺動台と取付台との間を締
結する各締結ボルトが摺動可能に貫通すると共に
各摺動台上面幅方向に沿つて延びる長孔を有する
特許請求の範囲第１項又は第２項記載の直線摺動
用テーブルアツセンブリ。 ４ テーパギブは、その基端側に位置する各長孔
を基準にしてその基端側の左右両側コーナー部に
左右両側方向に向けて漸次肉薄となるテーパ部を
有する特許請求の範囲第３項記載の直線摺動用テ
ーブルアツセンブリ。 ５ テーパギブは、その幅寸法が各摺動台と取付
台との間を締結する各対の締結ボルト間の間隔寸
法より小さく、これら各対の締結ボルトの間に位
置する特許請求の範囲第１項又は第２項記載の直
線摺動用テーブルアツセンブリ。[Scope of Claims] 1. A bed having a pair of mounting reference surfaces, a pair of tracks attached to each mounting reference surface of the bed, and a plurality of sliding boards guided by each track to perform linear reciprocating motion. , a large number of rolling elements that circulate within a pair of endless tracks formed on each of these slide tables and apply a load between each of the above-mentioned tracks and each slide stand, and the top surface of each of the above-mentioned slide stands. It consists of a mounting base that is installed between the sliding base and fixed with a pair of fastening bolts in the width direction of each sliding base, and a wall thickness is formed between the top surface of each sliding base and the bottom surface of the mounting base from the base end to the tip. A tapered gib formed to become gradually thinner is interposed toward the width direction of the top surface of each slide table, and each of these taper gibs is inserted in the width direction of the top surface of each slide table within a range where the base end does not come off the top surface of each slide table. A table assembly for linear sliding, characterized in that the table assembly is moved forward and backward along the direction to adjust the preload acting on each of the rolling elements. 2 The mounting base has a side plate on the side surface in the width direction, and threaded holes having the same axis and having a pitch difference from each other are bored on the proximal end sides of the side plate and the taper gib. and are connected by a preload adjustment bolt having threaded portions at both ends to be screwed into each of the screw holes, and the taper gib is finely adjusted by the preload adjustment bolt. Table assembly for linear sliding. 3. The taper gib has an elongated hole through which each fastening bolt that fastens between each sliding base and the mounting base can slide, and which extends along the width direction of the upper surface of each sliding base. Or the linear sliding table assembly described in item 2. 4. The tapered give has tapered portions that gradually become thinner in the left and right directions at both left and right corner portions on the base end side with reference to each elongated hole located on the base end side. Table assembly for linear sliding. 5. The tapered gib has a width smaller than the interval between each pair of fastening bolts that fasten between each sliding base and the mounting base, and is located between each pair of fastening bolts. The table assembly for linear sliding according to item 1 or 2.
JP58130905A 1983-07-20 1983-07-20 Table assembly for straight sliding Granted JPS6025628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58130905A JPS6025628A (en) 1983-07-20 1983-07-20 Table assembly for straight sliding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58130905A JPS6025628A (en) 1983-07-20 1983-07-20 Table assembly for straight sliding

Publications (2)

Publication Number Publication Date
JPS6025628A JPS6025628A (en) 1985-02-08
JPS6156055B2 true JPS6156055B2 (en) 1986-12-01

Family

ID=15045464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58130905A Granted JPS6025628A (en) 1983-07-20 1983-07-20 Table assembly for straight sliding

Country Status (1)

Country Link
JP (1) JPS6025628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010159A1 (en) * 1989-03-01 1990-09-07 Thk Co., Ltd. Bearing for straight slide and method of setting thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188636A (en) * 1986-02-12 1987-08-18 Hiroshi Teramachi Linear guide device
JP2541124Y2 (en) * 1990-05-18 1997-07-09 日本精工株式会社 Linear guide table device
DE9013522U1 (en) * 1990-09-26 1990-12-06 Schaeffler Waelzlager Ohg, 6650 Homburg Fastening for a bearing body of a longitudinal guide with a running element
JP2004324737A (en) * 2003-04-23 2004-11-18 Nsk Ltd Linear guide arrangement
JP5668678B2 (en) * 2011-12-20 2015-02-12 株式会社安川電機 robot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010159A1 (en) * 1989-03-01 1990-09-07 Thk Co., Ltd. Bearing for straight slide and method of setting thereof

Also Published As

Publication number Publication date
JPS6025628A (en) 1985-02-08

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