KR20130006025U - A low backlash device of the lead screw - Google Patents

A low backlash device of the lead screw Download PDF

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Publication number
KR20130006025U
KR20130006025U KR2020120002863U KR20120002863U KR20130006025U KR 20130006025 U KR20130006025 U KR 20130006025U KR 2020120002863 U KR2020120002863 U KR 2020120002863U KR 20120002863 U KR20120002863 U KR 20120002863U KR 20130006025 U KR20130006025 U KR 20130006025U
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South Korea
Prior art keywords
backlash
boss
thread
clearance
lead screw
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KR2020120002863U
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Korean (ko)
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도재상
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도재상
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Priority to KR2020120002863U priority Critical patent/KR20130006025U/en
Publication of KR20130006025U publication Critical patent/KR20130006025U/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2003—Screw mechanisms with arrangements for taking up backlash
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing backlash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work

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

Abstract

백래시(Backlash; 뒤틈; 유격)의 사전적인 의미는 한 쌍의 기어 및 나사( 스크류 )를 맞물렸을 때 치면 사이에 생기는 틈새이다. 즉, 한쌍의 나사가 결합(치합)될 때 한쪽이 맞닿은 다음 나산과 나사산사이의 간격이다. 결국 나사산과 나사산간의 틈 쉽게 말해 유격(裕隔)을 말하는 것이다.
어떤 기계장치든 사용함에 따라 마모가 발생하면 백래시가 커져서 기계의 정밀도가 저하되고 백래시가 과도하면 기계를 더 이상 사용할 수 없는 상태가 되어 폐기처분하는 경우가 발생한다.
본 리드스크류용 저유격 장치는 공작기계 등에 사용되는 사다리꼴나사의 마모에 따른 백래시 발생을 최소화함으로써 보다 정밀하게 장치를 이송할 수 있다.
원리는 보스(암나사)를 나누어 보스 가이드를 통하여 이동할 수 있게 함으로써 마모가 발생하여 리드스크류(수나사)(1)와 보스(암나사)(2)의 나사산 간격이 커지면 즉 백래시가 커지면 유격조정스프링(3)과 유격조정볼트(4)에 의하여 밀착시켜 줌으로써 이송의 진행방향에 관계없이 백래시를 최소화할 수 있다.Backlash dictionary meanings of (Backlash;; dwiteum gap) is a gap formed between the teeth when bitten fit the gear and the screw (screws) of a pair. In other words, when a pair of screws are engaged (engaged), one side abuts, and then the spacing between the threads and the threads. After all, the gap between the thread and the thread is easy to say the play.
As a result of the use of any mechanical device, the backlash increases when the wear occurs, and the precision of the machine decreases. When the backlash is excessive, the machine is no longer usable and disposed of.
For lead screw The low clearance device enables more precise device transfer by minimizing the backlash caused by the wear of trapezoidal screws used in machine tools.
The principle is that the wear is generated by dividing the boss (female thread) and moving through the boss guide, so that the thread spacing between the lead screw (male) and the boss (female) (2) increases, that is, the backlash increases, and the clearance adjustment spring (3). ) And the clearance adjusting bolt (4) to close the backlash can be minimized irrespective of the direction of travel.

Description

리드 스크류용 저유격 장치{A low backlash device of the lead screw}A low backlash device of the lead screw

백래시(Backlash)는 나사가 맞물릴 때 원주 방향으로 나사 산과 산 사이가 벌어진 틈새를 말한다.Backlash refers to the gap between a screw thread and a thread in the circumferential direction when the screw is engaged.

리드스크류와 보스의 마모로 백래시가 발생하면 리드스크류가 축 방향으로 움직일 수 있는 공간이 발생하고 정확한 위치로의 공작물 이송이 되지 않아 가공의 정밀도가 저하된다.If the backslash occurs due to the wear of the lead screw and the boss, there is a space for the lead screw to move in the axial direction, and the precision of machining is reduced because the workpiece cannot be moved to the correct position.

이러한 유격 발생 시 본 리드 스크류용 저유격 장치의 보스(암나사)가이더(5) 내의 유격조정볼트(1)를 조여서 유격을 제거하며 유격조정볼트 미조정시 유격조정스프링(3)의 탄력으로 유격이 자동으로 조정되는 것이다.For this lead screw when such play occurs The boss (female thread) of the low clearance device is tightened to remove the clearance by tightening the clearance adjustment bolt (1) in the guide (5). When the clearance adjustment bolt is not adjusted, the clearance is automatically adjusted by the elasticity of the clearance adjustment spring (3).

유격조정볼트가 없을 경우는 유격조정스프링의 힘만으로 유격 조정이 되므로 축 방향으로 과도한 힘이 작용할 경우 보스(암나사)가 밀려서 유격이 발생하는 경우가 있다. 본 고안은 이러한 단점을 보완하기 위하여 유격조절볼트(1)로 조여 줌으로써 과도한 힘에 의한 유격발생을 최소화할 수 있다.If there is no clearance adjustment bolt, clearance is adjusted only by the force of the clearance adjustment spring. If excessive force is applied in the axial direction, clearance may occur due to the boss (female thread) being pushed. The present invention can minimize the occurrence of play caused by excessive force by tightening the play adjusting bolt (1) to compensate for this disadvantage.

즉, 백래시의 적정크기를 자동으로 조절할 수 있게 하여 기계의 정밀도를 향상시키고 수명을 연장할 수 있다.
In other words, it is possible to automatically adjust the appropriate size of the backlash to improve the precision of the machine and to extend the life.

백래시는 없애는 방법은 기구 적으론 거의 불가능 하다고 한다. 즉 백래시가 있어야 기계가 조립이 되고 작동을 하기 때문입니다.It's almost impossible to get rid of backlash. In other words, the machine must be back assembled before it can operate.

등록 실용 20-0320197호에 의한 너트를 두 개 끼워서 힘의 전달방향에 따라 각각 치면이 닫는 부분을 다르게 밀착시켜서 백래시를 줄이는 방법을 쓰는 것도 있다.Another method is to reduce the backlash by inserting two nuts according to Korean Utility Model No. 20-0320197 and making the teeth close each other according to the direction of force transmission.

백래시(Backlash; 뒤틈; 유격)의 사전적인 의미는 한 쌍의 기어 및 나사(스크류)를 맞물렸을 때 치면 사이에 생기는 틈새이다. 즉, 한 쌍의 나사가 결합(치합)될 때 한쪽이 맞닿은 다음 나사산과 나사산사이의 간격이다. 결국 나사산과 나사산간의 틈 쉽게 말해 유격(裕隔)을 말하는 것이다.The dictionary meaning of backlash is the gap between teeth when engaging a pair of gears and screws (screws) . That is, when a pair of screws are engaged (engaged), one side abuts, and then a gap between the threads and the threads. After all, the gap between the thread and the thread is easy to say the play.

어떤 기계장치든 사용함에 따라 마모가 발생하면 백래시가 커져서 기계의 정밀도가 저하되고 백래시가 과도하면 기계를 더 이상 사용할 수 없는 상태가 되어 폐기처분하는 경우가 발생한다.As a result of the use of any mechanical device, the backlash increases when the wear occurs, and the precision of the machine decreases. When the backlash is excessive, the machine is no longer usable and disposed of.

본 리드스크류용 저유격 장치는 공작기계 등에 사용되는 사다리꼴나사의 마모에 따른 백래시 발생을 최소화 함으로써 보다 정밀하게 장치를 이송할 수 있다.For lead screw The low clearance device enables more precise device transfer by minimizing the backlash caused by the wear of trapezoidal screws used in machine tools.

원리는 마모가 발생하여 리드스크류(수나사)(1)와 보스(암나사)(2)의 나사 산 간격이 커지면 유격조정스프링(3)과 유격조정볼트(4)에 의하여 밀착시켜 줌으로써 이송의 진행방향에 관계없이 백래시를 최소화할 수 있다.
Principle is that when the thread spacing between lead screw (male) and boss (female) is increased due to abrasion, it is brought into close contact with the clearance adjusting spring (3) and the clearance adjusting bolt (4). Regardless, backlash can be minimized.

리드스크류와 보스에 마모가 발생하여 유격(백래시)이 커지면 이를 최소화 하기위하여 보스(암나사)가이더(5) 내의 나누어진 보스에 유격조정을 위한 볼트와 스프링으로 리드스크류에 압력을 가하여 마모가 발생하여도 정밀도에 큰 영향 없이 기계를 사용할 수 있다.
To minimize this, if the lead screw and boss are worn out and the clearance (backlash) increases, wear occurs by applying pressure to the lead screw with bolts and springs for clearance adjustment to the divided boss in the boss (female thread) guide (5). The machine can be used without significant impact on the degree of precision.

모든 기계장치는 구입하여 작동을 하는 순간부터 마모가 시작된다. 본 백래시 최소화 장치는 리드스크류와 보스가 장착된 기계장치에서 마모가 발생하게 되어도 원래의 정밀도를 유지할 수 있도록 하기 위한 장치이다.All machinery begins to wear from the moment you buy and operate it. This backlash minimization device is designed to maintain the original precision even if wear occurs in the machine equipped with the lead screw and boss.

또한 마모는 리드스크류 보다는 보스 쪽에서 더 많이 발생하며, 원래의 정밀도을 유지하기 위하여 리드스크류 보다는 보스(암나사)를 교체함으로써 보다 편리하고, 쉽고, 경제적으로 할 수 있다.
In addition, wear occurs more on the boss side than on the lead screw, and it is more convenient, easy and economical to replace the boss (female screw) than the lead screw to maintain the original precision.

도 1은 본 고안에 의한 리드 스크류용 저유격 장치의 정면(절단면)도이다. 본 고안의 핵심인 유격조정을 위한 볼트와 스프링을 볼 수 있다.
도 2는 도 1의 배면(뒷면)도, 본 고안의 핵심인 보스(암나사)가 나누어진 것을 볼 수 있다.1 is a front (cutting) view of a low clearance device for a lead screw according to the present invention. You can see the bolts and springs for clearance adjustment which is the core of the present invention.
Figure 2 is the back (back) of Figure 1, you can see that the boss (female thread) is the core of the present invention is divided.

본 고안의 리드 스크류용 저유격 장치의 백래시 최소화방법의 구성 및 작용효과를 부수된 도면과 함께 더욱 상세하게 설명한다.The construction and effect of the method of minimizing backlash of the low clearance device for lead screw of the present invention will be described in more detail together with the accompanying drawings.

도 1 은 본 고안의 저유격장치의 절단된 정면을 보여준다. 리드스크류(수나사)(1)와 보스(암나사)(2)는 사다리꼴 나사로 되어 있다. 사다리꼴나사의 특징은 첫째 자동조심 작용이 가능하다, 둘째 강도가 높고, 큰 힘에 견딜 수 있다. 셋째 공작기계의 이송나사로 널리 사용되며, 가공하기가 쉽다. 이러한 사다리꼴의 나사는 자동 조심작용을 이용하여 마모에 따른 백래시 발생을 본 고안을 이용하면 백래시를 쉽게 최소화할 수 있다.Figure 1 shows a cut front of the low-gap device of the present invention. The lead screw (male screw) 1 and the boss (female screw) 2 are trapezoidal screws. Trapezoidal screw features: first, self-aligning action, second, high strength, can withstand large forces. Thirdly, it is widely used as a feed screw for machine tools and is easy to process. This trapezoidal screw can be easily minimized backlash by using the present invention to generate the backlash according to the wear using the self-aligning action.

본 고안의 원리는 간단하다. 도 1 에서와 같이 보스(암나사)가이더(5) 내의 보스(암나사)(2)를 반으로 나누고, 리드스크류(수나사)나 보스에 마모가 발생하면 이를 자동으로 유격조정볼트(4)와 유격조정스프링(3)으로 보스(암나사)(2)에 압력을 가하여 암나사와 수나사의 닿는 부분을 밀착시켜서 이송의 진행방향에 무관하게 유격(백래시)을 최소화할 수 있다.The principle of the present invention is simple. As shown in Fig. 1, the boss (female thread) 2 in the boss (female thread) guider 5 is divided in half, and when wear occurs on the lead screw (male thread) or the boss, the clearance adjustment bolt 4 and the clearance adjustment are automatically adjusted. By applying pressure to the boss (female thread) 2 with the spring 3, the contact between the female thread and the male thread can be brought into close contact, thereby minimizing play (backlash) regardless of the direction of travel.

<< 도면 1, 2의 주요부분에 대한 부호의 설명 >>
1 리드스크류(수나사)
2 보스(암나사)
3 유격조정 스프링
4 유격조정 볼트
5 보스(암나사) 가이더<< Explanation of the code | symbol about the principal part of FIGS. 1 and 2 >>
1 Lead Screw (Male Thread)
2 boss (Female thread)
3 clearance adjustment spring
4 clearance adjustment bolt
5 Boss (Female Thread) Guider

Claims (2)

사다리꼴나사를 사용하는 이송 기계장치의 유격(백래시)을 최소화하기 위한 원리는 보스(암나사)(2)를 나누어 보스 가이드로 이동할 수 있게 함으로써 마모가 발생하여 리드스크류(수나사)(1)와 보스(암나사)(2)의 나사 산 간격이 커지면 즉 백래시가 커지면 유격조정스프링(3)과 유격조정볼트(4)에 의하여 보스부분에 압력을 가하여 리드스크류를 조여 주는 장치로 백래시를 최소화하는 방법.The principle for minimizing play (backlash) of the transfer mechanism using the trapezoidal screw is to divide the boss (female thread) (2) and move it to the boss guide so that abrasion occurs and lead screw (male thread) (1) and boss ( A method of minimizing backlash by applying pressure to the boss portion by the clearance adjusting spring (3) and the clearance adjusting bolt (4) as the thread spacing of the female thread (2) increases, that is, the backlash increases. 청구항 1에 있어서,
백래시(유격) 발생 시 유격조정볼트(1)를 조여서 유격을 제거하며 유격조정볼트 미조정시 유격조정스프링(3)의 탄력으로 유격이 자동으로 조정되는 장치.The method according to claim 1,
When backlash (gap) occurs, the gap is removed by tightening the clearance adjusting bolt (1). When the clearance adjustment bolt is not adjusted, the clearance is automatically adjusted by the elasticity of the clearance adjustment spring (3).
KR2020120002863U 2012-04-08 2012-04-08 A low backlash device of the lead screw KR20130006025U (en)

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CN106435846A (en) * 2016-10-29 2017-02-22 卓郎（常州）纺织机械有限公司 Fiber burring preventive structure for grid bars of opener
CN108223737A (en) * 2016-12-12 2018-06-29 斯凯孚公司 Actuator
CN109838526A (en) * 2019-04-11 2019-06-04 陕西理工大学 A kind of micro- backlash eliminating equipment of bolt and nut pair

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101683517B1 (en) * 2015-06-01 2016-12-20 현대자동차 주식회사 Scissors gear unit having elastic force adjuster
CN106435846A (en) * 2016-10-29 2017-02-22 卓郎（常州）纺织机械有限公司 Fiber burring preventive structure for grid bars of opener
CN108223737A (en) * 2016-12-12 2018-06-29 斯凯孚公司 Actuator
CN108223737B (en) * 2016-12-12 2024-02-13 伊维莱有限公司 Actuator with a spring
CN109838526A (en) * 2019-04-11 2019-06-04 陕西理工大学 A kind of micro- backlash eliminating equipment of bolt and nut pair

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