JPH03181617A - Straight moving type guide device - Google Patents
Straight moving type guide deviceInfo
- Publication number
- JPH03181617A JPH03181617A JP1319125A JP31912589A JPH03181617A JP H03181617 A JPH03181617 A JP H03181617A JP 1319125 A JP1319125 A JP 1319125A JP 31912589 A JP31912589 A JP 31912589A JP H03181617 A JPH03181617 A JP H03181617A
- Authority
- JP
- Japan
- Prior art keywords
- rail
- load
- guide device
- moving block
- rolling
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 32
- 230000036316 preload Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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
- F16C39/00—Relieving load on bearings
- F16C39/02—Relieving load on bearings using mechanical means
-
- 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
- F16C29/007—Hybrid linear bearings, i.e. including more than one bearing type, e.g. sliding contact bearings as well as rolling contact bearings
-
- 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
- F16C29/0633—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
-
- 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
- F16C29/0642—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 four rows of balls
- F16C29/0645—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 four rows of balls with load directions in O-arrangement
-
- 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
- F16C29/0642—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 four rows of balls
- F16C29/0647—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 four rows of balls with load directions in X-arrangement
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、直線状のガイドレールに沿って移動ブロッ
クが移動する直動形ガイド装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a linear guide device in which a movable block moves along a linear guide rail.
従来の技術発明の課題
近年、この種の直動形ガイド装置において、摩擦抵抗好
酸のため、ガイドレールに、所定の転がり軌道を通って
循環する複数のボールなどの転動体を介して移動ブロッ
クが移動自在に取付けられた転がり方式のものが数多く
開発されている。Prior Art Problems with the Invention In recent years, in this type of direct-acting guide device, due to frictional resistance, the guide rail has a moving block via rolling elements such as a plurality of balls circulating through a predetermined rolling track. A number of rolling type devices have been developed that are movably mounted.
しかし、転がり方式の直動形ガイド装置は負荷容量が小
さく、機械の誤動作などにより過大な外部負荷を受けた
ときに、転がり軌道面に転動体による圧痕が生じたり、
損傷を受けることが多い。また、すべり方式に比べ、剛
性の低いことも問題である。However, the rolling type direct drive guide device has a small load capacity, and when an excessive external load is applied due to a machine malfunction, etc., the rolling elements may create dents on the rolling raceway.
Often damaged. Another problem is that the rigidity is lower than that of the sliding type.
この発明の目的は、上記の問題を解決した直動形ガイド
装置を提供することにある。An object of the present invention is to provide a direct-acting guide device that solves the above problems.
課題を解決するための手段
この発明による直動形ガイド装置は、
直線状のガイドレールに、所定の転がり軌道を通って循
環する複数の転動体を介して移動ブロックが移動自在に
取付けられている直動形ガイド装置において、
上記転がり軌道の他に、所定値以上の外部負荷が作用し
たときに摺接するすべり面ががイドレールおよび移動ブ
ロックに形成されていることを特徴とするものである。Means for Solving the Problems A linear guide device according to the present invention includes a moving block movably attached to a linear guide rail via a plurality of rolling elements that circulate through a predetermined rolling track. The linear guide device is characterized in that, in addition to the rolling track, the idle rail and the moving block are provided with a sliding surface that slides into contact when an external load of a predetermined value or more is applied.
作 用
外部負荷が小さい間は、転動体で荷重が受けられ、転動
体で受ける最大荷重の総和は外部負Ｇｊの増大にともな
って増大する。そして、外部負荷が所定値以上になると
、すべり面でも荷重が受けられるようになり、それより
外部負荷が増大すると、それにともなってすべり面で受
ける荷重は増大するが、転動体で受ける荷重はほとんど
増大しない。While the acting external load is small, the rolling elements receive the load, and the total sum of the maximum loads received by the rolling elements increases as the external negative Gj increases. When the external load exceeds a predetermined value, the sliding surface will also receive the load, and if the external load increases beyond that, the load on the sliding surface will increase accordingly, but the load on the rolling elements will hardly be received. Does not increase.
したがって、大きな外部負荷を受けても、転動体にはあ
る程度以上の荷重が作用せず、転がり軌道面に圧痕が生
じたり、損傷を受けることがない。そのために、従来の
転がり方式に比べてＴ圧を大きくとることが可能となり
、高剛性化、高精度化が図れる。Therefore, even if a large external load is applied, the load does not exceed a certain level on the rolling elements, and the rolling raceway surfaces are not indented or damaged. Therefore, compared to the conventional rolling method, it is possible to have a larger T pressure, and higher rigidity and precision can be achieved.
実 施 例 以下、図面を参照して、この発明の詳細な説明する。Example Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は、第１実施例の直動形ガイド装置の横断面を概
略的に示す。FIG. 1 schematically shows a cross section of a linear guide device according to a first embodiment.
ガイド装置は、横断面略方形で直線状のガイドレール（
１）と、これに跨り複数のボール（２〉を介して移動す
る横断面略逆Ｕ形の移動ブロック（３）を備えている。The guide device is a straight guide rail (with a substantially rectangular cross section).
1), and a moving block (3) with a substantially inverted U-shape in cross section that moves via a plurality of balls (2).
レール（１）の左右両側面に前後方向にのびるみぞ〈４
〉が形成されており、両側のみぞ（４）の上下に円弧み
ぞ状の転がり軌道（５）（６）が形成されている。Grooves extending in the front-rear direction on both left and right sides of the rail (1)〈4
> is formed, and arcuate groove-shaped rolling tracks (5) and (6) are formed above and below the grooves (4) on both sides.
移動ブロック（３）は、レール（１）を左右両側から挾
む１対の脚部（３ａ）と、左右の脚部（３ａ）の上端同
志を連結する連結部（３ｂ〉とからなる。The moving block (3) consists of a pair of legs (3a) that sandwich the rail (1) from both the left and right sides, and a connecting part (3b) that connects the upper ends of the left and right legs (3a).
移動ブロック（３〉の各脚部（３ａ）に、次のように、
上下２段のボール循環路（７）（８）がそれぞれ形成さ
れている。脚部（３ａ）の中間部分（前後両端のエンド
キャップ部分（図示路）を除く部分）のレール（１）側
すなわち左右方向内側に、レール（１）の軌道（５）
（６）に面する上下２段の円弧みぞ状の転がり軌道（１
０）（１１）が形成されている。On each leg (3a) of the moving block (3>), as follows:
Two upper and lower ball circulation paths (7) and (8) are formed, respectively. The track (5) of the rail (1) is placed on the rail (1) side of the intermediate portion of the leg (3a) (excluding the end cap portions (paths shown) at both front and rear ends), that is, on the inside in the left and right direction.
(6) An upper and lower arcuate groove-shaped rolling track (1
0) (11) are formed.
また、脚部（３ａ）の中間部分であって軌道（１０）（
１１〉より外側の部分に、上下２段の穴状の復路〈１２
）（＋３）が形成されている。図示は省略したが、脚部
（３ａ）の前後両端のエンドキャップ部分に、上段の軌
道（１０）の端と上段の復路（１２〉の端とを連結する
半円状の上段の反転路が形成されており、軌道（１０）
、復路（１２〉およびこれらの両端の反転路によって上
段の循環路（７）が構成されている。同様に、脚部（３
ａ）の前後両端のエンドキャップ部分に、下段の軌道（
１１）の端と下段の復路（１３）の端とを連結する半円
状の下段の反転路が形成されており、軌道（１１）、復
路〈１３〉およびこれらの両端の反転路によって下段の
循環路（８〉が構成されている。Moreover, the intermediate part of the leg part (3a) and the track (10) (
On the outside of 11〉, there is a hole-shaped return path with two upper and lower stages〈12
)(+3) is formed. Although not shown, there is a semicircular upper reverse path connecting the end of the upper track (10) and the end of the upper return path (12>) on the end cap portions at both the front and rear ends of the leg (3a). is formed and the orbit (10)
, return path (12>) and reversal paths at both ends constitute an upper circulation path (7).Similarly, the leg section (3)
Attach the lower track (
A semicircular lower reversal path is formed that connects the end of the lower return path (11) and the end of the lower return path (13), and the lower reversal path is formed by the track (11), the return path <13>, and the reversal path at both ends of A circulation path (8>) is configured.
各ボール循環路（７） （８）内にボール（２）が封入
され、上段の循環路（７）の軌道（１０）の部分にある
ボール（２）がレール（１）の両側の上部の軌道（５）
に接触し、下段の循環路（８〉の軌道（１１）の部分に
あるボール（２〉がレール（１）の両側の下部の軌道（
６〉に接触している。そして、移動ブロック〈３）が前
後に移動すると、ボール（２）はレール（１）の軌道（
５） （６）上を転勤しながらそれぞれのボール循環路
（７）（８）を循環する。なお、循環路（７）（８）の
軌道（ｔｏ）（１１）の部分にあるボール（２〉は、保
持器（図示路）によって保持されている。A ball (2) is enclosed in each ball circulation path (7) (8), and the ball (2) in the track (10) of the upper circulation path (7) is placed in the upper part of both sides of the rail (1). Orbit (5)
The ball (2>) on the track (11) of the lower circulation path (8>) is in contact with the lower track (11) on both sides of the rail (1).
6〉. Then, when the moving block (3) moves back and forth, the ball (2) moves along the track (1) of the rail (1).
5) (6) The ball circulates through the respective ball circulation paths (7) and (8) while transferring over the top. Note that the balls (2>) located on the orbits (to) (11) of the circulation paths (7) and (8) are held by a holder (path shown).
レール（１）の上部左右両側に、水平上向きの状態より
上側に４５度傾いて左右方向斜め外側を向いた上部すべ
り面（１４〉が形成されている。Upper sliding surfaces (14) are formed on both left and right sides of the upper part of the rail (1), tilting 45 degrees upward from the horizontally upward position and facing obliquely outward in the left-right direction.
移動ブロック（３）の連結部（３ｂ〉と左右の脚部（３
ａ）の間の隅部に、レール（１）の上部すべり面（１４
）に対向する上部すべり面（１５）が形成されている。The connecting part (3b) of the moving block (3) and the left and right legs (3
a), the upper sliding surface (14) of the rail (1)
) is formed to face the upper sliding surface (15).
レール（１）の左右のみぞ（４〉内に断面三角形状の突
条（１６）が形成され、これらの突条（６）の下側に、
水平下向きの状態から下側に４５度傾いて左右方向斜め
外側を向いた下部すべり面（１７）が形成されている。Projections (16) having a triangular cross section are formed in the left and right grooves (4) of the rail (1), and below these projections (6),
A lower sliding surface (17) is formed which is inclined 45 degrees downward from the horizontally downward position and faces diagonally outward in the left-right direction.
移動ブロック（３）の左右の脚部（３ａ〉の上下の軌道
（１０）（１１）の間に、レール（１）の下部すべり面
（１７）に対向する下部すべり面（１８）が形成されて
いる。A lower sliding surface (18) opposite to the lower sliding surface (17) of the rail (1) is formed between the upper and lower tracks (10) and (11) of the left and right legs (3a) of the moving block (3). ing.
ガイド装置に外部負荷が作用していない場合、４ｔ１！
ｉ所の互いに対向するすべり面（１４）（１５）（１７
）（１８〉の間にわずかな隙間があるか、これらのすべ
り面（１４）（＋５）（１７）（１ｇ＞がほとんど接し
ているが負荷を受けない状態にある。そして、外部負荷
が小さい間は、ボール（２〉によって負荷が受けられる
。このとき、第１図において、移動ブロック（３〉はレ
ール（１）から、左上のボール（２〉を介して左下向き
のＧｊ重、左下のボール（２）を介して左上向きの荷重
、右上のボール（２）を介して右下向きの荷重、右下の
ボール（２）を介して右上向きの荷重をそれぞれ受けう
るので、あらゆる方向の荷重を受けることができる。外
部負荷が所定値以上になると、すべり而（１４）（１５
）（１７）（１８）でも負荷が受けられるようになる。When no external load is acting on the guide device, 4t1!
Sliding surfaces (14) (15) (17) facing each other at location i
) (18〉) or there is a slight gap between these sliding surfaces (14) (+5) (17) (1g>), but they are almost in contact but are not under any load.And the external load is small. During this period, a load is received by the ball (2>).At this time, in Fig. 1, the moving block (3> receives the Gj weight downward to the left from the rail (1) via the upper left ball (2>), and the lower left It can receive a load upward to the left through the ball (2), a load downward to the right through the upper right ball (2), and an upward load to the right through the lower right ball (2), so it can receive loads in all directions. When the external load exceeds a predetermined value, slipping occurs (14) (15
)(17)(18) can also receive the load.
このとき、移動ブロック（３）はレール（１）から、左
側の上部すべり面（１４）（１５）を介して左上向きの
荷重、左側の下部すべり面（１７） （１８）を介して
左下向きの荷重、右側の上部すべり面（１４）（１５）
を介して右上向きの荷重、右側の下部すべり面（１７）
（１８）を介して右下向きの荷重をそれぞれ受けうる
ので、あらゆる方向の荷重を受けることができる。At this time, the moving block (3) is loaded from the rail (1) upwardly to the left via the left upper sliding surface (14) (15), and downwardly to the left via the lower left sliding surface (17) (18). Load on the right upper sliding surface (14) (15)
Load upward to the right through the lower sliding surface on the right (17)
(18), it can receive loads directed downward to the right, so it can receive loads in all directions.
第２図は外部負荷とガイド装置の各部で受ける荷重の関
係を示すグラフであり、Ｆｌはボール（２）で受ける荷
重の総和、Ｆ２はすべり面（１４） （１５） （１７
） （１８）で受ける荷重の総和、ＦはＦｌとＦ２の和
すなわちガイド装置の案内面全体で受ける荷重の総和を
示す。Figure 2 is a graph showing the relationship between the external load and the load received by each part of the guide device, where Fl is the total load received by the ball (2), and F2 is the sliding surface (14) (15) (17).
) The sum of the loads received in (18), F indicates the sum of Fl and F2, that is, the sum of the loads received on the entire guide surface of the guide device.
第２図において、外部負荷が所定値Ｗｏより小さい間は
、荷重は全てボール（２）で受けられ、ボール（２〉で
受ける荷重Ｆｌは外部負荷の増大にともなって増大する
。外部負荷がＷｏ以上になると、すべり面（１４） （
１５） （１７）（１ｇ）でも荷重が受けられるように
なり、それより外部負荷が増大すると、それにともなっ
てすべり面（１４） （１５）（１７） （１８）で受
ける荷重Ｆ２は増大するが、ボール（２）で受ける荷重
Ｆｌはほとんど増大しない。In Fig. 2, while the external load is smaller than the predetermined value Wo, all the load is received by the ball (2), and the load Fl received by the ball (2>) increases as the external load increases. If it becomes more than that, the slip surface (14) (
15) (17) (1g) can now receive a load, and if the external load increases beyond that, the load F2 received by the sliding surface (14) (15) (17) (18) increases. , the load Fl received by the ball (2) hardly increases.
したがって、大きな外部負荷を受けても、ボール（２〉
にはある程度以上の荷重が作用せず、転がり軌道（５）
（Ｇ） （１０）（１１）の面に圧痕が生じたり、損傷
を受けることがない。そのことにより、従来の転がり方
式に比べて予圧を大きくとることが可能となり、高剛性
化、高精度化が図れる。Therefore, even if it receives a large external load, the ball (2〉
No load beyond a certain level acts on the rolling track (5)
(G) (10) There will be no indentation or damage on the surface of (11). This makes it possible to have a larger preload than the conventional rolling method, resulting in higher rigidity and higher precision.
第３図は第２実施例の直動形ガイド装置の横断面を概略
的に示し、第１実施例と対応する部分には同一の符号を
付している。FIG. 3 schematically shows a cross section of a direct-acting guide device according to the second embodiment, and parts corresponding to those in the first embodiment are given the same reference numerals.
第２実施例の場合、ガイドレール（１）の左右両側に断
面三角形状の突条（２０）が形成されている。突条（２
０）の上側に水平上向きの状態から上側に４５度傾いて
左右方向斜め外側を向いた傾斜面が形成され、その幅方
向中央部が上部幅がり軌道（５）、その両側が上部すべ
り面（１４）となっている。突条（２０）の下側に水平
下向きの状態から下側に４５度傾いて左右方向斜め外側
を向いた傾斜面が形成され、その幅方向中央部が下部幅
がり軌道〈６）、その両側が下部すべり面（１７）とな
っている。移動ブロック（３）の脚Ｍ（３ａ）の左右方
向内側に、レール（１）の突条（２０〉がはまる断面三
角形状のみぞ（２１）が形成されている。In the case of the second embodiment, protrusions (20) having a triangular cross section are formed on both left and right sides of the guide rail (1). Projection (2
0) is formed with an inclined surface that is tilted 45 degrees upward from the horizontally upward position and faces diagonally outward in the left and right direction, the center of which is the upper widening track (5), and the upper sliding surface (5) is formed on both sides of the inclined surface. 14). An inclined surface is formed on the lower side of the protrusion (20), which is inclined 45 degrees downward from the horizontally downward state and faces obliquely outward in the left and right direction, and the central part in the width direction is the lower widened track (6), and the inclined surface is formed on both sides thereof. is the lower sliding surface (17). A groove (21) having a triangular cross section is formed on the inside in the left-right direction of the leg M (3a) of the moving block (3), into which the protrusion (20>) of the rail (1) fits.
みぞ（２１）の上側の斜め下向きの傾斜面の幅方向中央
部に角みぞ状の上部幅がり軌道（１ｏ）が形成され、そ
の両側に、レール（１〉の上部すべり面（１４）に対向
する上部すべり面（１５）が形成されている。みぞ（２
１）の下側の斜め上向きの傾斜面の幅方向中央部に角み
ぞ状の下部幅がり軌道（１１）が形成され、その両側に
、レール（１）の下部すべり面（１７）に対向する下部
すべり面（１８）が形成されている。A rectangular groove-shaped upper wide track (1o) is formed in the widthwise center of the obliquely downward inclined surface on the upper side of the groove (21), and on both sides thereof, it faces the upper sliding surface (14) of the rail (1>). An upper sliding surface (15) is formed.
1) A square groove-shaped lower widening track (11) is formed at the center in the width direction of the lower obliquely upward inclined surface, and on both sides thereof, facing the lower sliding surface (17) of the rail (1). A lower sliding surface (18) is formed.
他は、第１実施例の場合と同様である。The rest is the same as in the first embodiment.
第４図は、第３実施例を示す。FIG. 4 shows a third embodiment.
第３実施例は、左右１対の直動ガイド装置（３０）によ
って１つの移動体（３１）を移動させる装置である。各
ガイド装置（３０）は、直線状のガイドレール（３２）
と、これに跨り複数のボール（３３）を介して移動する
横断面略述Ｕ形の移動ブロック（３４）を備えている。The third embodiment is a device in which one movable body (31) is moved by a pair of left and right linear motion guide devices (30). Each guide device (30) has a linear guide rail (32)
and a moving block (34) whose cross section is roughly U-shaped and which moves via a plurality of balls (33) astride this.
そして、左右の移動ブロック（３４）の上部同志が連結
部材（３５）で連結され、これによって移動体（３１）
が構成されている。The upper parts of the left and right moving blocks (34) are connected by a connecting member (35), and thereby the moving body (31)
is configured.
各ガイド装５！（３０）自体は左右非対称なものである
が、左側のガイド装置（３０）と右側のガイド装置（３
０）は左右対称に構成されている。Each guide outfit 5! (30) itself is asymmetrical, but the left guide device (30) and the right guide device (30)
0) is configured symmetrically.
両側のレール（３２）の対向側面に、上下２段の円弧み
ぞ状の転がり軌道（３６） （３７）が形成されている
。両側の移動ブロック（３４）の互いに接近している方
の脚部（３４ａ）に、上下の円弧みぞ状の転がり軌道（
３８） （３９）を含む上下２段のボール循環路（４０
）（４１）が形成されている。これらの循環路（４０）
（４１）自体は、前記実施例のものと同様である。Two upper and lower arcuate groove-shaped rolling tracks (36) and (37) are formed on opposing side surfaces of the rails (32) on both sides. Upper and lower arcuate groove-shaped rolling tracks (
38) Two upper and lower ball circulation paths (40) including (39)
) (41) are formed. These circulation paths (40)
(41) itself is the same as that of the previous embodiment.
レール（３２）の反対側の側面に、断面三角形状の突条
（４２）が形成されている。突条（４２）の上側の傾斜
面が上部すべり面（４３〉、下側の傾斜面が下部すべり
面（４４）となっている。また、移動ブロック（３４〉
の互いに離れた方の脚部（３４ａ）に、レール（３２）
の突条（４２〉がはまる断面三角形状のみぞ（４５）が
形成されている。みぞ（４５〉の上側の傾斜面がレール
（３２）の°上部すべり面（４３）に対向する上部すべ
り面（４６〉、下側の傾斜面がレール（３２〉の下部す
べり面（４４〉に対向する下部すべり面（４７〉となっ
ている。A protrusion (42) having a triangular cross section is formed on the opposite side surface of the rail (32). The upper inclined surface of the protrusion (42) is an upper sliding surface (43>), and the lower inclined surface is a lower sliding surface (44).
The rails (32) are attached to the mutually distant legs (34a) of the
A groove (45) having a triangular cross section is formed into which the protrusion (42〉) fits.The upper slope of the groove (45〉) is an upper sliding surface opposite to the upper sliding surface (43) of the rail (32). (46>, the lower sloped surface is a lower sliding surface (47>) opposite to the lower sliding surface (44>) of the rail (32>).
第３実施例の場合も、外部負荷が小さい間は、ボール（
３３）で荷重が受けられ、外部負荷が所定値以上になる
と、すべり面（４３）（４６） （４４） （４７）で
も荷重が受けられるようになる。なお、ボール（３３）
とすべり面（４３） （４６） （４４） （４７）の
荷重の分配は、使用状況に応じて、左右のレール（３２
）の相互間隔を調整することによって変えることができ
、たとえば、この相互間隔が大きいほど、すべり面（４
３） （４Ｂ） （４４） （４７）で受ける荷重の割
合が大きくなる。In the case of the third embodiment as well, while the external load is small, the ball (
33), and when the external load exceeds a predetermined value, the sliding surfaces (43), (46), (44), and (47) can also receive the load. In addition, the ball (33)
The load distribution between the left and right rails (32) and sliding surfaces (43) (46) (44) (47) depends on the usage situation.
) can be changed by adjusting the mutual spacing between the sliding surfaces (4
3) The proportion of the load received at (4B) (44) and (47) increases.
上記実施例には、転動体がボールである場合だけを示し
たが、転動体がころである場合もある。In the above embodiment, only the case where the rolling elements are balls is shown, but the rolling elements may also be rollers.
発明の効果
この発明の直動形ガイド装置によれば、上述のように、
大きな外部負荷を受けても、転動体にはある程度以上の
負荷が作用せず、転がり軌道面に圧痕が生じたり、損傷
を受けることがない。そのために、従来の転がり方式に
比べて予圧を大きくとることが可能となり、高剛性化、
高精度化が図れる。Effects of the Invention According to the direct-acting guide device of the present invention, as described above,
Even if a large external load is applied, the load does not exceed a certain level on the rolling elements, and the rolling raceway surface is not indented or damaged. Therefore, compared to the conventional rolling method, it is possible to take a larger preload, resulting in higher rigidity and
High precision can be achieved.
第１図はこの発明の第１実施例を示す直動形ガイド装置
の概略横断面図、第２図は外部負荷と直動形ガイド装置
の各部で受ける荷重との関係を表わすグラフ、第３図は
第２実施例を示す第１図相当の図面、第４図は第３実施
例を示す第１図を目当の図面である。
（＋＞ （３２）・・・ガイドレール、（２）（３３）
・・・ボール、（３） （３４）・・・移動ブロック、
（５） （８） （１０） （１１）（３６）（３７）
（３８）（３９）・・・転がり軌道、＜７’） （８
） （４０） （４１）・・・ボール循環路、（１４）
（１５） （１７） （１８）（４３）（４４） （
４Ｂ）（４７）・・・すべり面、（３０〉・・・直動形
ガイド装置。
以 上FIG. 1 is a schematic cross-sectional view of a direct-acting guide device showing a first embodiment of the present invention, FIG. 2 is a graph showing the relationship between external loads and loads received at various parts of the direct-acting guide device, and FIG. The figure is a drawing corresponding to FIG. 1 showing the second embodiment, and FIG. 4 is a drawing corresponding to FIG. 1 showing the third embodiment. (+> (32)...Guide rail, (2) (33)
... Ball, (3) (34) ... Moving block,
(5) (8) (10) (11) (36) (37)
(38) (39)...Rolling trajectory, <7') (8
) (40) (41)...Ball circulation path, (14)
(15) (17) (18) (43) (44) (
4B) (47)...Sliding surface, (30>...Direct-acting guide device.
Claims (1)
環する複数の転動体を介して移動ブロックが移動自在に
取付けられている直動形ガイド装置において、 上記転がり軌道の他に、所定値以上の外部負荷が作用し
たときに摺接するすべり面がガイドレールおよび移動ブ
ロックに形成されていることを特徴とする直動形ガイド
装置。[Claims] A linear guide device in which a moving block is movably attached to a linear guide rail via a plurality of rolling elements circulating along a predetermined rolling track, In addition, a direct-acting guide device is characterized in that the guide rail and the moving block are provided with sliding surfaces that come into sliding contact when an external load of a predetermined value or more is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319125A JPH03181617A (en) | 1989-12-08 | 1989-12-08 | Straight moving type guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319125A JPH03181617A (en) | 1989-12-08 | 1989-12-08 | Straight moving type guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03181617A true JPH03181617A (en) | 1991-08-07 |
Family
ID=18106744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1319125A Pending JPH03181617A (en) | 1989-12-08 | 1989-12-08 | Straight moving type guide device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03181617A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0623700U (en) * | 1992-08-27 | 1994-03-29 | アイダエンジニアリング株式会社 | Slide guide device for press machine |
| JP2006266404A (en) * | 2005-03-24 | 2006-10-05 | Tottori Univ | Hybrid linear motion guide device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0251619A (en) * | 1988-08-16 | 1990-02-21 | T Echi K Kk | Bearing for linear slide |
-
1989
- 1989-12-08 JP JP1319125A patent/JPH03181617A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0251619A (en) * | 1988-08-16 | 1990-02-21 | T Echi K Kk | Bearing for linear slide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0623700U (en) * | 1992-08-27 | 1994-03-29 | アイダエンジニアリング株式会社 | Slide guide device for press machine |
| JP2006266404A (en) * | 2005-03-24 | 2006-10-05 | Tottori Univ | Hybrid linear motion guide device |
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