TWI730248B - Nut support device of feed screw device for machine tool, feed screw device for machine tool and surface grinder - Google Patents
Nut support device of feed screw device for machine tool, feed screw device for machine tool and surface grinder Download PDFInfo
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Abstract
[課題]在螺帽支撐裝置中，以浮動狀態位置精度良好地支撐螺帽構件。 [解決手段]具有：安裝基板；螺帽保持構件，保持螺帽構件；彈簧裝置，包含固定在安裝基板的基部、及固定在螺帽保持構件的自由端部，且與螺帽構件的軸線方向相同方向的剛性比與螺帽構件的環繞軸線方向相同方向的剛性高；固定構件，固定在安裝基板；及可撓性聯結器，包含供螺桿軸朝與螺帽構件的軸線方向之相同方向貫通的貫通孔、連結於前述螺帽保持構件的第1端部、及連結於前述固定構件的第2端部，並且將螺帽保持構件以相對於前述固定構件旋轉受限的狀態來連接於前述固定構件。[Problem] In the nut support device, the nut member is supported in a floating state with high position accuracy. [Solution] It has: a mounting base plate; a nut holding member to hold the nut member; and a spring device including a base fixed to the mounting base and a free end fixed to the nut holding member in the axial direction of the nut member The rigidity in the same direction is higher than the rigidity in the same direction as the circumferential axis of the nut member; the fixed member is fixed to the mounting base; and the flexible coupling includes a screw shaft that penetrates in the same direction as the axial direction of the nut member The through hole, the first end connected to the nut holding member, and the second end connected to the fixing member, and the nut holding member is connected to the aforementioned fixing member in a state where rotation is restricted relative to the fixing member Fixed member.
Description
發明領域 本發明是有關於一種工作機械用進給螺桿裝置之螺帽支撐裝置及工作機械用進給螺桿裝置，更詳細而言是有關於一種以浮動狀態來支撐工作機械用進給螺桿裝置的螺帽構件的螺帽支撐裝置、包含藉由該螺帽支撐裝置所支撐的螺帽構件的工作機械用進給螺桿裝置、及包含該工作機械用進給螺桿裝置的平面磨床。FIELD OF THE INVENTION The present invention relates to a nut supporting device of a feed screw device for a machine tool and a feed screw device for a machine tool, and more specifically, it relates to a device that supports a feed screw device for a machine tool in a floating state A nut support device for a nut member, a feed screw device for a machine tool including a nut member supported by the nut support device, and a surface grinder including the feed screw device for a machine tool.
發明背景 作為將進給螺桿裝置的螺帽構件以浮動狀態來支撐之螺帽支撐裝置，已知的有具有安裝基板、旋轉受限構件、支撐托架及連桿(tie bar)的螺帽支撐裝置，該旋轉受限構件是可撓性聯結器構造，並包含固定在前述安裝基板之一端、及固定在前述螺帽構件的一端之另一端，該支撐托架是固定於前述安裝基板，該連桿包含一端及另一端，且該一端是包含彎曲方向的可撓部而連結於前述螺帽構件的前述一端，該另一端是包含彎曲方向的可撓部而連結於前述支撐托架(例如專利文獻1)。BACKGROUND OF THE INVENTION As a nut support device that supports a nut member of a feed screw device in a floating state, a nut support device having a mounting base plate, a rotation restricted member, a support bracket, and a tie bar is known Device, the rotation restricted member is a flexible coupling structure, and includes one end fixed to the mounting base and the other end fixed to one end of the nut member, the support bracket is fixed to the mounting base, the The link includes one end and the other end, and the one end is a flexible part including a bending direction and is connected to the one end of the nut member, and the other end is a flexible part including a bending direction and is connected to the support bracket (for example, Patent Document 1).
此螺帽支撐裝置容許螺帽構件相對於安裝基板之軸線方向的傾斜，並藉由旋轉受限構件來阻止螺帽構件相對於安裝基板旋轉之情形，而藉由連桿來進行螺帽構件與安裝基板之軸力的傳達。 先前技術文獻 專利文獻This nut support device allows the nut member to tilt with respect to the axis of the mounting base plate, and prevents the nut member from rotating relative to the mounting base plate by the rotation restricted member, and uses the connecting rod to perform the connection between the nut member and the mounting base. Transmission of the axial force of the mounting board. Prior Art Documents Patent Documents
專利文獻1：日本專利特公平5-70746號公報Patent Document 1: Japanese Patent Publication No. 5-70746
發明概要 發明欲解決之課題 當上述的螺帽支撐裝置在連結於螺帽構件的一端之連桿的一端、以及連結於支撐托架之連桿的另一端產生偏心時，會使連桿的中心軸線相對於螺帽構件的中心軸線傾斜，並且因應於其傾斜角而發生由連桿所造成之螺帽構件與支撐托架的軸線方向的間隔變狹窄之軸線方向的偏差。此偏差會使螺帽構件相對於安裝基板之軸線方向的位置精度及再現性降低。這種情形是成為藉由此螺帽裝置以浮動狀態來支撐之包含螺帽構件的進給螺桿裝置的位置精度及再現性降低的原因。SUMMARY OF THE INVENTION The problem to be solved by the invention. When the above-mentioned nut support device is eccentric at one end of the link connected to one end of the nut member and the other end of the link connected to the support bracket, the center of the link is caused The axis is inclined with respect to the central axis of the nut member, and a deviation of the axis direction due to the narrowing of the axis direction of the nut member and the support bracket caused by the connecting rod occurs due to the inclination angle thereof. This deviation reduces the position accuracy and reproducibility of the nut member with respect to the axial direction of the mounting board. This situation is a cause of the decrease in the position accuracy and reproducibility of the feed screw device including the nut member supported by the nut device in a floating state.
本發明欲解決之課題在於，在工作機械用進給螺桿裝置之螺帽支撐裝置中，以浮動狀態位置精度良好地支撐螺帽構件。 用以解決課題之手段The problem to be solved by the present invention is to support the nut member in a floating state with good positional accuracy in the nut support device of the feed screw device for machine tools. Means to solve the problem
本發明的一個實施形態的工作機械用進給螺桿裝置之螺帽支撐裝置(10)，是在包含有螺桿軸(22)、及供前述螺桿軸(22)螺旋卡合的螺帽構件(20)之工作機械用進給螺桿裝置(9)中支撐前述螺帽構件(20)，該螺帽支撐裝置(10)具有：安裝基板(12)；螺帽保持構件(16)，保持前述螺帽構件(20)；彈簧裝置(14)，包含固定在前述安裝基板(12)的基部(14A)、及固定在前述螺帽保持構件(16)的自由端部(14B)，且與前述螺帽構件(20)的軸線方向相同方向的剛性比與前述螺帽構件(20)的環繞軸線方向相同方向的剛性高；固定構件(36)，固定在前述安裝基板(12)；及可撓性聯結器(38)，包含供前述螺桿軸(22)朝與前述螺帽構件(20)的軸線方向之相同方向貫通的貫通孔(50)、連結於前述螺帽保持構件(16)的第1端部(42)、及連結於前述固定構件(36)的第2端部(44)，並且將前述螺帽保持構件(16)以相對於前述固定構件(36)旋轉受限的狀態來連接於前述固定構件(36)。The nut support device (10) of the feed screw device for machine tools according to one embodiment of the present invention includes a screw shaft (22) and a nut member (20) for screw engagement with the screw shaft (22). ) The feed screw device (9) for machine tools supports the nut member (20), and the nut support device (10) has: a mounting base plate (12); a nut holding member (16) to hold the nut A member (20); a spring device (14), including a base (14A) fixed to the mounting substrate (12), and a free end (14B) fixed to the nut holding member (16), and with the nut The rigidity in the same direction as the axial direction of the member (20) is higher than the rigidity in the same direction as the surrounding axial direction of the nut member (20); the fixing member (36) is fixed to the mounting substrate (12); and the flexible connection The device (38) includes a through hole (50) through which the screw shaft (22) penetrates in the same direction as the axial direction of the nut member (20), and a first end connected to the nut holding member (16) Part (42), and the second end part (44) connected to the fixing member (36), and the nut holding member (16) is connected to the fixing member (36) in a state of restricted rotation relative to the fixing member (36) The aforementioned fixing member (36).
根據此構成，即便螺帽保持構件(16)相對於安裝基板(12)產生偏心，由於彈簧裝置(14)在軸線方向上具有較高的剛性，因此可抑制螺帽保持構件(16)在軸線方向上相對於安裝基板(12)位移之情形，而可抑制保持在螺帽保持構件(16)的螺帽構件(20)的軸線方向的位置精度降低之情形。According to this configuration, even if the nut holding member (16) is eccentric with respect to the mounting substrate (12), the spring device (14) has high rigidity in the axial direction, so that the nut holding member (16) can be restrained from being eccentric in the axial direction. When it is displaced in the direction relative to the mounting substrate (12), it is possible to suppress the decrease in the positional accuracy of the nut member (20) held by the nut holding member (16) in the axial direction.
在上述螺帽支撐裝置(10)中，較理想的是，前述彈簧裝置(14)是藉由套筒支撐板彈簧(24)所構成，該套筒支撐板彈簧(24)具有中間片部(14A)與一對側片部(14B)，前述中間片部(14A)是位於前述安裝基板(12)與前述螺帽保持構件(16)之間並包含有前述基部，前述一對側片部(14B)是從前述中間片部(14)的兩側的邊緣部各自朝由前述安裝基板(12)遠離的方向延伸而位於前述螺帽保持構件(16)的兩側，且包含有前述自由端部。In the above nut supporting device (10), it is preferable that the aforementioned spring device (14) is formed by a sleeve supporting plate spring (24), and the sleeve supporting plate spring (24) has an intermediate piece ( 14A) and a pair of side pieces (14B), the intermediate piece (14A) is located between the mounting substrate (12) and the nut holding member (16) and includes the base, and the pair of side pieces (14B) extends from the edge portions on both sides of the intermediate piece portion (14) in the direction away from the mounting substrate (12), and is located on both sides of the nut holding member (16), and includes the aforementioned freedom Ends.
根據此構成，彈簧裝置(14)是與保持在螺帽保持構件(16)的螺帽構件(20)的軸線方向相同方向的剛性變得比與該螺帽構件(20)的環繞軸線方向相同方向的剛性高，而一併使藉由彈簧裝置(14)進行的螺帽保持構件(16)的支撐成為確實的支撐。According to this configuration, the spring device (14) has the same rigidity in the same direction as the axial direction of the nut member (20) held by the nut holding member (16) than the same direction as the circumferential axis direction of the nut member (20). The directional rigidity is high, and the support of the nut holding member (16) by the spring device (14) is also ensured.
在上述螺帽支撐裝置(10)中，較理想的是前述彈簧裝置(14)是藉由複數個互相重疊的套筒支撐板彈簧(24)的集合體所構成。In the nut supporting device (10), it is preferable that the spring device (14) is constituted by an assembly of a plurality of sleeve supporting plate springs (24) overlapping each other.
根據此構成，可以藉由套筒支撐板彈簧(24)的片數而容易地將彈簧裝置(14)的特性設定為適當值。According to this configuration, the characteristics of the spring device (14) can be easily set to an appropriate value by the number of sheets of the leaf spring (24) supported by the sleeve.
在上述螺帽支撐裝置(10)中，較理想的是，前述螺帽保持構件(16)是藉由套筒構件(16)所構成，該套筒構件(16)界定有朝與前述螺帽構件(20)的中心軸線相同方向延伸的螺帽收納孔(16B)，且於前述螺帽收納孔(16B)收納前述螺帽構件(20)的本體部(20A)。In the nut supporting device (10), it is preferable that the nut holding member (16) is formed by a sleeve member (16), and the sleeve member (16) defines the direction and the nut The central axis of the member (20) has a nut receiving hole (16B) extending in the same direction, and the body portion (20A) of the nut member (20) is accommodated in the nut receiving hole (16B).
根據此構成，即便套筒構件(16)或螺帽構件(20)的本體部(20A)的軸長較長，也可抑制螺帽支撐裝置(10)的軸長變長之情形。According to this structure, even if the axial length of the main body part (20A) of the sleeve member (16) or the nut member (20) is long, the axial length of the nut support device (10) can be suppressed from increasing.
在上述螺帽支撐裝置(10)中，較理想的是，前述螺帽保持構件(16)是藉由圓筒形狀的套筒構件(16)所構成，該圓筒形狀的套筒構件(16)界定有朝與前述螺帽構件(20)的中心軸線相同方向延伸的螺帽收納孔(16B)，且於前述螺帽收納孔(16B)收納前述螺帽構件(20)的本體部(20A)，前述螺帽保持構件(16)在外周面具有固定前述套筒支撐板彈簧(24)的前述一對側片部(14B)的平坦面(16E)。In the nut supporting device (10), it is preferable that the nut holding member (16) is composed of a cylindrical sleeve member (16), and the cylindrical sleeve member (16) ) Defines a nut accommodating hole (16B) extending in the same direction as the central axis of the nut member (20), and the body portion (20A) of the nut member (20) is accommodated in the nut accommodating hole (16B) ), the nut holding member (16) has a flat surface (16E) for fixing the pair of side piece portions (14B) of the sleeve support plate spring (24) on an outer peripheral surface.
根據此構成，即便套筒構件(16)或螺帽構件(20)的本體部(20A)的軸長較長，也可抑制螺帽支撐裝置(10)的軸長變長之情形，並且提升套筒構件(16)與套筒支撐板彈簧(24)的連接強度。According to this structure, even if the axial length of the main body (20A) of the sleeve member (16) or the nut member (20) is long, the axial length of the nut support device (10) can be suppressed from becoming longer, and it can be lifted The sleeve member (16) and the sleeve support the connection strength of the leaf spring (24).
在上述螺帽支撐裝置(10)中，較理想的是，前述螺帽構件(20)具有設置在前述本體部(20A)的外周的凸緣部(20B)，前述套筒構件(16)包含供前述凸緣部(20B)的凸緣面(20C)抵接的端面(16A)，且前述凸緣部(20B)藉由螺栓(18)固定於前述套筒構件(16)。In the nut supporting device (10), it is preferable that the nut member (20) has a flange portion (20B) provided on the outer periphery of the body portion (20A), and the sleeve member (16) includes The end surface (16A) on which the flange surface (20C) of the flange portion (20B) abuts, and the flange portion (20B) is fixed to the sleeve member (16) by bolts (18).
根據此構成，可在毋須對具有凸緣部(20B)的標準規格的螺帽構件(20)進行加工的情形下，將螺帽構件(20)確實地固定於套筒構件(16)。According to this structure, it is possible to reliably fix the nut member (20) to the sleeve member (16) without processing the nut member (20) of the standard specification having the flange portion (20B).
在上述螺帽支撐裝置(10)中，較理想的是，前述可撓性聯結器(38)具有中間區塊(40)、套筒側板彈簧(42)、及固定側板彈簧(44)，前述套筒側板彈簧(42)是設置在前述中間區塊(40)的一邊的端面(40A)、及與該端面(40A)相向的前述螺帽保持構件(16)的端面(16C)之間，且連結於該等兩端面(40A、16C)，前述固定側板彈簧(44)是設置在前述中間區塊(40)的另一邊的端面(40B)、及與該端面(40B)相向的前述固定構件(36)的端面(36B)之間，且連結於該等兩端面(40B、36B)。In the nut supporting device (10), it is preferable that the flexible coupling (38) has an intermediate block (40), a sleeve side leaf spring (42), and a fixed side leaf spring (44). The sleeve-side leaf spring (42) is provided between the end surface (40A) on one side of the intermediate block (40) and the end surface (16C) of the nut holding member (16) facing the end surface (40A), And connected to the two end surfaces (40A, 16C), the fixed side leaf spring (44) is provided on the end surface (40B) on the other side of the intermediate block (40), and the fixed side spring (44) opposite to the end surface (40B) Between the end surfaces (36B) of the member (36), and are connected to the end surfaces (40B, 36B).
根據此構成，由於螺帽保持構件(16)及固定構件(36)各自成為可撓性聯結器(38)的軸端連接構件，因此變得毋須另外設置軸端連接構件，因而可在零件數量的削減之下，簡化可撓性聯結器(38)的構成。According to this structure, since the nut holding member (16) and the fixing member (36) each become the shaft end connecting member of the flexible coupling (38), there is no need to separately provide the shaft end connecting member, so the number of parts Under the reduction, the composition of the flexible coupling (38) is simplified.
本發明的一個實施形態之工作機械用進給螺桿裝置(9)，具有支撐於上述之實施形態的前述螺帽支撐裝置(10)的前述螺帽構件(20)、及螺旋卡合於前述螺帽構件(20)的螺桿軸(22)。A feed screw device (9) for machine tools according to an embodiment of the present invention has the nut member (20) supported by the nut support device (10) of the above-mentioned embodiment, and the screw is engaged with the screw The screw shaft (22) of the cap member (20).
根據此構成，可抑制工作機械用進給螺桿裝置(9)的軸線方向的位置精度降低之情形，並可進行較高的位置精度的軸進給。According to this configuration, it is possible to suppress the decrease in the position accuracy of the feed screw device (9) for the machine tool in the axial direction, and it is possible to perform shaft feed with high position accuracy.
根據本發明的一個實施形態的平面磨床(1)，具有床座(2)、可往返移動地設置於前述床座(2)且載置被磨削物(W)之工作台(4)、及磨削前述被磨削物(W)的砂輪(6)，該平面磨床(1)具有上述之實施形態的工作機械用進給螺桿裝置(9)，來作為使前述工作台(4)往返移動的進給裝置。The surface grinder (1) according to one embodiment of the present invention has a bed base (2), a worktable (4) that is reciprocally movably arranged on the bed base (2) and on which the object to be ground (W) is placed, And the grinding wheel (6) for grinding the above-mentioned workpiece (W). The surface grinder (1) has the feed screw device (9) for the machine tool of the above-mentioned embodiment as a reciprocating mechanism for the worktable (4). Mobile feeding device.
根據此構成，讓工作台(4)以較高的位置精度來移動，而提升磨削精度。 發明效果According to this structure, the table (4) can be moved with high position accuracy, and the grinding accuracy can be improved. Invention effect
根據本發明之工作機械用進給螺桿裝置之螺帽支撐裝置，能夠以浮動狀態位置精度良好地支撐螺帽構件。According to the nut support device of the feed screw device for machine tools of the present invention, the nut member can be supported in a floating state with high position accuracy.
用以實施發明之形態 參照圖1來說明本發明的平面磨床的一個實施形態。Mode for Carrying Out the Invention One embodiment of the surface grinder of the present invention will be described with reference to Fig. 1.
平面磨床1具有床座2、工作台4、及砂輪6，該工作台4是被線性導引軌道3所引導而可在床座2上往復移動，且可載置被磨削物W，該砂輪6是安裝於主軸5。The
工作台4的往返移動是藉由以滾珠螺桿所形成之工作機械用進給螺桿裝置9來進行。工作機械用進給螺桿裝置9具有螺桿軸22、電動馬達8及螺帽構件20，該螺桿軸22是將兩端部各自藉由托架7來可旋轉地支撐，該電動馬達8是安裝於一邊的托架7且旋轉驅動螺桿軸22，該螺帽構件20是被安裝於工作台4的螺帽支撐裝置10所支撐，且供螺桿軸22螺旋卡合。螺帽構件20具有內置有滾珠循環部(圖未示)的圓筒形狀的本體部20A、及設置在本體部20A的一邊的軸端附近的外周的凸緣部20B(參照圖3)。The reciprocating movement of the table 4 is performed by the
接著，參照圖2~圖5來說明螺帽支撐裝置10的一個實施形態。再者，在以下的說明中，「軸線方向」均為進給螺桿裝置的軸線方向(螺帽構件及螺桿軸的軸線方向)。又，為了說明的方便而如圖示地相對於「軸線方向」來定義上下方向及左右方向。Next, one embodiment of the
螺帽支撐裝置10具有於軸線方向上較長之大致矩形的平板狀的安裝基板12。如圖1所示，安裝基板12是藉由複數個螺栓(圖未示)而固定在工作台4的下表面。The
在安裝基板12的軸線方向的一側的下表面，以懸吊的狀態安裝有套筒構件16，該套筒構件16是藉由彈簧裝置14而成為螺帽保持構件。套筒構件16是藉由於軸線方向上較長之大致圓筒體所構成。套筒構件16是藉由上表面的倒角而具有上部平坦面16D，且藉由左右兩側面的倒角而具有側部平坦面16E。上部平坦面16D在用於避免與後述的螺鎖固定板26的干渉上是有用的。側部平坦面16E是朝與螺帽構件20的軸線方向相同方向平行地延伸的平面。A
套筒構件16具有端面16A與螺帽收納孔16B，該端面16A是供螺帽構件20的凸緣部20B的凸緣面20C抵接，該螺帽收納孔16B是開口於端面16A並朝與螺帽構件20的中心軸線相同方向延伸。換言之，套筒構件16界定有朝與螺帽構件20的中心軸線相同方向延伸的螺帽收納孔16B。The
在套筒構件16的端面16A是藉由複數個螺栓18來固定螺帽構件20的凸緣部20B。將螺帽構件20的本體部20A收納在螺帽收納孔16B。On the
螺帽構件20的本體部20A可收納在螺帽收納孔16B，藉此，即便為了彈簧裝置14的連接而讓套筒構件16的軸長較長、或即便內置滾珠循環部(圖未示)的本體部20A的軸長較長、也可抑制螺帽支撐裝置10的軸長變長之情形，而變得可做到螺帽支撐裝置10的小型化設計。The
由於螺帽構件20是藉由凸緣部20B而可固定在套筒構件16的端面16A上，所以可在毋須對具有凸緣部20B之標準規格的螺帽構件20進行加工的情形下，將螺帽構件20確實地固定到套筒構件16。藉由此種固定，在螺帽構件20的本體部20A的軸長比螺帽收納孔16B的軸長更短的範圍內，可將本體部20A的軸長不同的各種螺帽構件20的保持以較高的通用性來進行。Since the
彈簧裝置14是藉由複數個互相重疊的套筒支撐板彈簧24的集合體所構成，並且具有中間片部14A與左右一對的側片部14B，前述中間片部14A是位於安裝基板12的下表面與套筒構件16的上表面之間，前述左右一對的側片部14B是從中間片部14A的左右兩側的邊緣部各自以1/4圓弧狀的彎曲部14C朝由安裝基板12遠離的方向亦即朝下方延伸而位於套筒構件16的左側及右側，而形成有在螺帽構件20的軸線方向觀看包圍套筒構件16的上部及左右的側部的溝形。The
中間片部14A是藉由複數個螺栓28而在安裝基板12固定成被安裝基板12與螺鎖固定板26包夾，且成為彈簧裝置14的基部，其中該等複數個螺栓28是貫通於安裝基板12及各個套筒支撐板彈簧24而螺旋卡合於螺鎖固定板26。各側片部14B是藉由複數個螺栓32包夾間隔板30而形成固定於套筒構件16的自由端部，其中該等複數個螺栓32是貫通於各套筒支撐板彈簧24及配置成朝各側片部14B的兩面來包夾側片部14B之各2片間隔板30，並且螺旋卡合於套筒構件16的側部平坦面(外周面)16E。The
藉此，使藉由彈簧裝置14進行的套筒構件16的支撐成為確實的支撐，並且彈簧裝置14是與套筒構件16及螺帽構件20的軸線方向相同方向的剛性變得比與套筒構件16及螺帽構件20的環繞軸線方向(螺桿軸22的旋轉方向)相同方向的剛性強。彈簧裝置14的這些剛性及彈簧特性，可以藉由套筒支撐板彈簧24的片數而容易地設定為適當値。As a result, the support of the
藉由此構成，彈簧裝置14是透過套筒構件16來容許螺帽構件20相對於安裝基板12的環繞軸線方向的旋轉位移並且限制螺帽構件20相對於安裝基板12的軸線方向的位移，而由安裝基板12浮動支撐套筒構件16及螺帽構件20。With this configuration, the
由於彈簧裝置14的軸線方向的尺寸(長度)充分地比側片部14B的上下方向的尺寸更長，且使側片部14B與套筒構件16及螺帽構件20的軸線方向相同方向一致來延伸得較長，並將側片部14B固定在與相同方向平行的側部平坦面16E上，所以可將藉由彈簧裝置14所支撐的套筒構件16及保持在套筒構件16的螺帽構件20相對於螺桿軸22的真直度保證得較高。Since the dimension (length) in the axial direction of the
在安裝基板12的軸線方向的另一側的下表面是藉由複數個螺栓34而固定有長方體形狀的固定構件36。固定構件36包含供螺桿軸22以鬆動嵌合狀態來朝與螺帽構件20同軸方向貫通的貫通孔36A。亦即，貫通孔36A的內徑充分地大於螺桿軸22的外徑。On the lower surface on the other side in the axial direction of the mounting
在固定構件36與套筒構件16之間設置有可撓性聯結器38。可撓性聯結器38具有中間區塊40、套筒側板彈簧42、及固定側板彈簧44，前述套筒側板彈簧42是由設置在中間區塊40的一邊的端面40A、及與該端面40A相向的套筒構件16的端面16C之間，且藉由螺栓46而連結於兩端面40A、16C之複數個板彈簧所形成，前述固定側板彈簧44是由設置在中間區塊40的另一邊的端面40B、及與該端面40B相向的固定構件36的端面36B之間，且藉由螺栓48而連結於兩端面40B、36B的複數個板彈簧所形成。藉此，可撓性聯結器38是套筒側板彈簧42成為與套筒構件16的連結部即第1端部，且固定側板彈簧44成為與固定構件36的連結部即第2端部，並且將套筒構件16以旋轉受限狀態來連接於固定構件36。在中間區塊40、套筒側板彈簧42及固定側板彈簧44中形成有供螺桿軸22以鬆動嵌合狀態來朝與套筒構件16及螺帽構件20同軸方向貫通的貫通孔50。亦即，貫通孔50的內徑充分地大於螺桿軸22的外徑。A
可撓性聯結器38雖然容許套筒構件16及螺帽構件20相對於安裝基板12及固定構件36的偏心，但會限制套筒構件16及螺帽構件20相對於安裝基板12及固定構件36的環繞軸線方向(螺桿軸22的旋轉方向)的位移。Although the
根據上述的螺帽支撐裝置10，藉由螺桿軸22的旋轉而欲使螺帽構件20旋轉之力可藉由可撓性聯結器38來承受，而欲使螺帽構件20在軸線方向上移動之力可藉由彈簧裝置14來承受。According to the
即便套筒構件16及螺帽構件20相對於安裝基板12及固定構件36產生偏心，由於彈簧裝置14在軸線方向上具有較高的剛性，因此可藉由彈簧裝置14抑制由安裝基板12所支撐的套筒構件16及螺帽構件20在軸線方向上相對於安裝基板12的位移。Even if the
藉此，可抑制起因於偏心的軸線方向的偏差，並且抑制保持於套筒構件16的螺帽構件20的軸線方向的位置精度及再現性降低之情形，而以浮動狀態位置精度良好地支撐螺帽構件20。藉由此支撐，可抑制因螺帽構件20及螺桿軸22所造成的工作機械用進給螺桿裝置9的軸線方向的位置精度及再現性降低之情形，並且變得可進行由較高的位置精度進行的軸進給動作。伴隨於此，在平面磨床1上，是讓工作台4以較高的位置精度來移動，而提升磨削精度。Thereby, it is possible to suppress the deviation in the axial direction due to the eccentricity, and to suppress the decrease in the positional accuracy and reproducibility of the
由於套筒支撐板彈簧24的一對平板狀的側片部14B是藉由複數個螺栓32固定在套筒構件16的側部平坦面16E上，因此可將套筒構件16與套筒支撐板彈簧24的連接以較高的強度來進行。藉此，可抑制套筒構件16在軸線方向上位移之情形，並且可在毋須對螺帽構件20施行用於安裝的加工的情形下，提升保持在套筒構件16的螺帽構件20的軸線方向的位置精度。Since the pair of
可將容許相對於安裝基板12的旋轉位移之套筒構件16的支撐藉由板彈簧、特別是由互相重疊的複數個套筒支撐板彈簧24的集合體所形成的彈簧裝置14來進行，藉此可得到由彈簧變形所進行的振動的抑制效果，並且降低動作時的噪音。又，彈簧裝置14是由複數個套筒支撐板彈簧24的集合體所構成，藉此使套筒支撐板彈簧24的溝形的折彎加工變得較容易。The
由於套筒構件16及固定構件36各自成為可撓性聯結器38的軸端連接構件，換言之，由於套筒構件16及固定構件36兼作為可撓性聯結器38的軸端連接構件，因此變得毋須在可撓性聯結器38中另外設置軸端連接構件，而可在零件數量的削減之下簡化可撓性聯結器38的構成。Since the
如上述，當相對於安裝基板12浮動支撐有螺帽構件20時，由於可容許上述的偏心，因此即便螺帽支撐裝置10的各構成零件所要求的加工精度及組裝精度較低也無妨。又，變得也可容易地進行組裝時的調整。藉由這些情形，變得可提升生產性並且降低成本。As described above, when the
以上，雖然已針對其較佳的實施形態來說明本發明，但正如同於只要是本發明所屬技術領域中具有通常知識者即可輕易地理解的，本發明並非限定於如此之實施形態的發明，且可在不脫離本發明的主旨之範圍內進行適當變更。Above, although the present invention has been described with respect to its preferred embodiments, as can be easily understood by those with ordinary knowledge in the technical field to which the present invention belongs, the present invention is not limited to the invention of such embodiments. , And can be appropriately changed without departing from the scope of the present invention.
例如，彈簧裝置14亦可為藉由1片套筒支撐板彈簧24所構成的裝置，並且只要是具有下述特性的裝置即可：與螺帽構件20的軸線方向相同方向的剛性比與螺帽構件20的環繞軸線方向相同方向的剛性高，因而並非限定為板彈簧。可撓性聯結器38並不限定為包含板彈簧的聯結器，亦可為由金屬伸縮囊等所構成的聯結器。保持螺帽構件20的零件並不限定為套筒構件16，亦可為形成有螺帽收納孔的區塊構件等。For example, the
根據本實施形態之工作機械用進給螺桿裝置9也可以適用在平面磨床1以外的各種的工作機械的軸進給機構上。The
又，上述實施形態所示的構成要素並非全部都是必須的要素，所屬技術領域的通常知識者可在不脫離本發明的主旨中進行適當取捨選擇。In addition, not all of the constituent elements shown in the above-mentioned embodiments are essential elements, and those skilled in the art can make appropriate selections without departing from the spirit of the present invention.
1‧‧‧平面磨床2‧‧‧床座3‧‧‧線性導引軌道4‧‧‧工作台5‧‧‧主軸6‧‧‧砂輪7‧‧‧托架8‧‧‧電動馬達9‧‧‧工作機械用進給螺桿裝置10‧‧‧螺帽支撐裝置12‧‧‧安裝基板14‧‧‧彈簧裝置14A‧‧‧中間片部(基部)14B‧‧‧側片部(自由端部)14C‧‧‧彎曲部16‧‧‧套筒構件(螺帽保持構件)16A、16C、36B、40A、40B‧‧‧端面16B‧‧‧螺帽收納孔16D‧‧‧上部平坦面16E‧‧‧側部平坦面(外周面)18、28、32、34、46、48‧‧‧螺栓20‧‧‧螺帽構件20A‧‧‧本體部20B‧‧‧凸緣部20C‧‧‧凸緣面22‧‧‧螺桿軸24‧‧‧套筒支撐板彈簧26‧‧‧螺鎖固定板30‧‧‧間隔板36‧‧‧固定構件36A、50‧‧‧貫通孔38‧‧‧可撓性聯結器40‧‧‧中間區塊42‧‧‧套筒側板彈簧(第1端部)44‧‧‧固定側板彈簧(第2端部)W‧‧‧被磨削物1‧‧‧Surface grinder 2‧‧‧Bed 3‧‧‧Linear guide rail 4‧‧‧Working table 5‧‧‧Spindle 6‧‧‧Grinding wheel 7‧‧‧Carriage 8‧‧‧Electric motor 9‧ ‧‧Feed screw device for working machinery 10‧‧‧Nut support device 12‧‧‧Mounting base plate 14‧‧‧Spring device 14A‧‧‧Intermediate piece (base) 14B‧‧‧Side piece (free end) )14C‧‧‧Curved part 16‧‧‧Sleeve member (nut holding member) 16A, 16C, 36B, 40A, 40B‧‧‧End surface 16B‧‧‧Nut receiving hole 16D‧‧‧Upper flat surface 16E‧ ‧‧Side flat surface (outer peripheral surface) 18, 28, 32, 34, 46, 48‧‧‧Bolt 20‧‧‧Nut member 20A‧‧‧Body part 20B‧‧‧Flange part 20C‧‧‧Protrusion Flange 22‧‧‧Screw shaft 24‧‧‧Sleeve support plate spring 26‧‧‧Screw fixing plate 30‧‧‧Spacer plate 36‧‧‧Fixed member 36A, 50‧‧‧Through hole 38‧‧‧Can Flexible coupling 40‧‧‧Middle block 42‧‧‧Sleeve side leaf spring (1st end) 44‧‧‧Fixed side leaf spring (2nd end) W‧‧‧Grinded object
圖1是顯示依據本發明之平面磨床的一個實施形態的正面圖。 圖2是顯示依據本發明之工作機械用進給螺桿裝置之螺帽支撐裝置以及工作機械用進給螺桿裝置的一個實施形態的立體圖。 圖3是將該實施形態以半截面顯示的立體圖。 圖4是顯示該實施形態的側面圖。 圖5是沿著圖4之線V-V的截面圖。Fig. 1 is a front view showing an embodiment of a surface grinder according to the present invention. 2 is a perspective view showing an embodiment of the nut supporting device of the feed screw device for machine tools and the feed screw device for machine tools according to the present invention. Fig. 3 is a perspective view showing the embodiment in a half section. Fig. 4 is a side view showing the embodiment. Fig. 5 is a cross-sectional view taken along the line V-V of Fig. 4.
1‧‧‧平面磨床 1‧‧‧Surface grinder
2‧‧‧床座 2‧‧‧Bed seat
3‧‧‧線性導引軌道 3‧‧‧Linear guide track
4‧‧‧工作台 4‧‧‧Working table
5‧‧‧主軸 5‧‧‧Spindle
6‧‧‧砂輪 6‧‧‧Grinding Wheel
7‧‧‧托架 7‧‧‧Bracket
8‧‧‧電動馬達 8‧‧‧Electric motor
9‧‧‧工作機械用進給螺桿裝置 9‧‧‧Feed screw device for working machinery
10‧‧‧螺帽支撐裝置 10‧‧‧Nut support device
12‧‧‧安裝基板 12‧‧‧Mounting board
14‧‧‧彈簧裝置 14‧‧‧Spring device
16‧‧‧套筒構件(螺帽保持構件) 16‧‧‧Sleeve member (nut holding member)
20‧‧‧螺帽構件 20‧‧‧Nut components
22‧‧‧螺桿軸 22‧‧‧Screw shaft
36‧‧‧固定構件 36‧‧‧Fixed member
38‧‧‧可撓性聯結器 38‧‧‧Flexible coupling
W‧‧‧被磨削物 W‧‧‧Abraded object
Claims (13)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018097728A JP6381847B1 (en) | 2018-05-22 | 2018-05-22 | Nut support device in machine tool feed screw device, machine tool feed screw device, and surface grinder |
| JP2018-097728 | 2018-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW202004058A TW202004058A (en) | 2020-01-16 |
| TWI730248B true TWI730248B (en) | 2021-06-11 |
Family
ID=63354857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107127581A TWI730248B (en) | 2018-05-22 | 2018-08-08 | Nut support device of feed screw device for machine tool, feed screw device for machine tool and surface grinder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6381847B1 (en) |
| TW (1) | TWI730248B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7158258B2 (en) * | 2018-11-22 | 2022-10-21 | ミネベアミツミ株式会社 | drive |
| CN109488738B (en) * | 2019-01-07 | 2023-09-12 | 东莞市兆丰精密仪器有限公司 | Diaphragm type screw rod flexible connecting device |
| CN115870845A (en) * | 2023-02-17 | 2023-03-31 | 孚诺泽石油装备(山东)有限公司 | Polishing device for pump machining |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133700A (en) * | 1978-04-10 | 1979-10-17 | Hitachi Ltd | Working table |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62153453U (en) * | 1986-03-24 | 1987-09-29 | ||
| JPS62297565A (en) * | 1986-06-18 | 1987-12-24 | Hitachi Electronics Eng Co Ltd | Ball screw feeder |
-
2018
- 2018-05-22 JP JP2018097728A patent/JP6381847B1/en active Active
- 2018-08-08 TW TW107127581A patent/TWI730248B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54133700A (en) * | 1978-04-10 | 1979-10-17 | Hitachi Ltd | Working table |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6381847B1 (en) | 2018-08-29 |
| JP2019202367A (en) | 2019-11-28 |
| TW202004058A (en) | 2020-01-16 |
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