CN108637770A - 一种减少热误差的传动结构 - Google Patents

一种减少热误差的传动结构 Download PDF

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Publication number
CN108637770A
CN108637770A CN201810394745.9A CN201810394745A CN108637770A CN 108637770 A CN108637770 A CN 108637770A CN 201810394745 A CN201810394745 A CN 201810394745A CN 108637770 A CN108637770 A CN 108637770A
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China
Prior art keywords
bearing
feed screw
screw nut
spacer
mounting means
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CN201810394745.9A
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English (en)
Inventor
朱嘉诚
潘卫国
任东
徐新朋
薛鹏飞
缪申
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Nantong Guosheng Intelligent Technology Group Ltd By Share Ltd
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Nantong Guosheng Intelligent Technology Group Ltd By Share Ltd
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Priority to CN201810394745.9A priority Critical patent/CN108637770A/zh
Publication of CN108637770A publication Critical patent/CN108637770A/zh
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    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/124—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating linear guiding systems
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

本发明公开了一种减少热误差的传动结构，包括丝杠支撑轴承的预紧方式，轴承密封结构和电机座轴承座分离式结构；丝杠支撑轴承为NSK角接触球轴承的组合安装方式，轴承安装方式为3列丝杠支撑轴承组合安装，具体为DBD组合安装方式，本结构为高刚性结构，这样安装可以承受径向和双轴向负载，在安装轴承时，轴承压盖对轴承外圈的预压量不能太大，轴承两端的丝杆螺母通过隔套对轴承内圈进行预压；在丝杆因发热而热变形时，隔套和丝杆螺母相对隔套和丝杆螺母之间的相对距离基本未变化，两个丝杆螺母仍处于锁紧状态，从而实现了丝杆螺母的放松，减少了热误差对精度的影响。本发明可以减少在传动过程中热误差问题，提高加工精度，延长轴承寿命的问题。

Description

一种减少热误差的传动结构
技术领域
本发明涉及立式加工中心领域，具体为一种丝杆尾端双螺母锁紧，减少热误差的传动结构。
背景技术
数控机床的运动有主运动和进给运动，进给运动的目的是使刀具与工件之间产生附加的相对运动，再加上主运动，即可不断地或连续地切除切屑，并获得具有所需几何特征的已加工表面。
进给运动是机床的基本运动之一，对机床的加工质量和生产效率都有直接影响。进给传动结构多种多样，丝杠传动是比较传统的一种结构形式，也是目前现有技术中经常用到的，然而，现有技术中的丝杠传动结构复杂，且存在丝杠无预紧、轴承未锁死等缺点。在以上情况下，容易提高丝杠在高速运转过程中发热后引起的误差。
基于以上描述，亟需一种新的数控机床的进给传动结构，以解决现有技术中存在的由于丝杠无预紧、轴承未锁死所导致的提高丝杠在高速运转过程中发热后引起的误差的问题。
发明内容
发明目的：为了解决现有技术的不足，本发明提供了一种减少热误差的传动结构。
技术方案：一种减少热误差的传动结构，包括丝杠支撑轴承的预紧方式，轴承密封结构和电机座轴承座分离式结构；丝杠支撑轴承为NSK角接触球轴承的组合安装方式，轴承安装方式为3列丝杠支撑轴承组合安装，具体为DBD组合安装方式，本结构为高刚性结构，这样安装可以承受径向和双轴向负载，在安装轴承时，轴承压盖对轴承外圈的的预压量不能太大，轴承两端的丝杆螺母通过隔套对轴承内圈进行预压；在丝杆因发热而热变形时，隔套和丝杆螺母相对隔套和丝杆螺母之间的相对距离基本未变化，两个丝杆螺母仍处于锁紧状态，从而实现了丝杆螺母的放松，减少了热误差对精度的影响。
有益效果：本发明可以减少在传动过程中热误差问题，提高加工精度，延长轴承寿命的问题。
附图说明
图1是本发明的结构示意图。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述，以使本领域的技术人员能够更好的理解本发明的优点和特征，从而对本发明的保护范围做出更为清楚的界定。本发明所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例
如图1所示，一种减少热误差的传动结构，包括丝杠支撑轴承2的预紧方式，轴承密封结构，电机座轴承座分离式结构。
丝杠支撑轴承2的预紧方式：Y向轴承安装型式是一种传动结构安装方式，丝杠支撑轴承2为NSK角接触球轴承的组合安装方式，轴承安装方式为3列丝杠支撑轴承2组合安装，具体为DBD组合安装方式，本结构为高刚性结构，这样安装可以承受径向和双轴向负载，缺点是轴承的预负荷分配不均匀，单列端轴承承受的内部负荷是双列端的两倍。在安装轴承时，轴承压盖3对轴承外圈的的预压量不能太大，轴承两端的丝杆螺母4通过隔套5对轴承内圈进行预压。在丝杆因发热而热变形时，隔套5和丝杆螺母4相对隔套和丝杆螺母之间的相对距离基本未变化，两个丝杆螺母4仍处于锁紧状态，从而实现了丝杆螺母4的放松，减少了热误差对精度的影响。
丝杆和丝杆轴承的润滑方式：传动丝杠为稀油润滑，润滑过程中润滑油流向丝杆螺母4和丝杆支撑轴承2。流入丝杆螺母4和丝杆支撑轴承2的润滑油与丝杆螺母4和丝杆支撑轴承2之间存在温度差，润滑油吸收热量，在润滑油流出润滑点时带走一定的热量，降低温度，从而减少丝杆的热延伸，减少误差。
本发明可以减少在传动过程中热误差问题，提高加工精度，延长轴承寿命的问题。

Claims (1)

1.一种减少热误差的传动结构，其特征在于：包括丝杠支撑轴承的预紧方式，轴承密封结构和电机座轴承座分离式结构；丝杠支撑轴承为NSK角接触球轴承的组合安装方式，轴承安装方式为3列丝杠支撑轴承组合安装，具体为DBD组合安装方式，本结构为高刚性结构，这样安装可以承受径向和双轴向负载，在安装轴承时，轴承压盖对轴承外圈的的预压量不能太大，轴承两端的丝杆螺母通过隔套对轴承内圈进行预压；在丝杆因发热而热变形时，隔套和丝杆螺母相对隔套和丝杆螺母之间的相对距离基本未变化，两个丝杆螺母仍处于锁紧状态，从而实现了丝杆螺母的放松，减少了热误差对精度的影响。
CN201810394745.9A 2018-04-27 2018-04-27 一种减少热误差的传动结构 Pending CN108637770A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020155226A1 (zh) * 2019-01-31 2020-08-06 大连理工大学 基于热误差和温升加权的丝杠预紧量确定方法
US11467066B2 (en) 2019-01-31 2022-10-11 Dalian University Of Technology Method for determining the preload value of the screw based on thermal error and temperature rise weighting

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377145A2 (de) * 1988-03-14 1990-07-11 Institut Für Produktionstechnik Karlsruhe Gmbh Vorrichtung zur Einstellung der axialen Vorspannung von Wälzlagern und Spindelmuttern
US5025914A (en) * 1988-08-31 1991-06-25 Okuma Machinery Works, Ltd. Feed-screw support structure
US5943928A (en) * 1996-12-24 1999-08-31 Daewoo Heavy Industries, Ltd. Lathe carriage unit
CN204295393U (zh) * 2014-12-16 2015-04-29 山东华强精密机床股份有限公司 一种滚珠丝杠双向调节预紧机构
CN105312951A (zh) * 2014-06-27 2016-02-10 芜湖陀曼精机科技有限公司 数控机床用滚珠丝杆支撑装置
CN105479238A (zh) * 2016-01-18 2016-04-13 南通国盛机电集团有限公司 一种丝杆锁紧螺母防松结构
CN106078176A (zh) * 2016-06-30 2016-11-09 广州市高品机床有限公司 一种丝杆预拉伸安装结构
CN106425639A (zh) * 2016-08-30 2017-02-22 重庆威诺克智能装备股份有限公司 一种数控机床的进给传动结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377145A2 (de) * 1988-03-14 1990-07-11 Institut Für Produktionstechnik Karlsruhe Gmbh Vorrichtung zur Einstellung der axialen Vorspannung von Wälzlagern und Spindelmuttern
US5025914A (en) * 1988-08-31 1991-06-25 Okuma Machinery Works, Ltd. Feed-screw support structure
US5943928A (en) * 1996-12-24 1999-08-31 Daewoo Heavy Industries, Ltd. Lathe carriage unit
CN105312951A (zh) * 2014-06-27 2016-02-10 芜湖陀曼精机科技有限公司 数控机床用滚珠丝杆支撑装置
CN204295393U (zh) * 2014-12-16 2015-04-29 山东华强精密机床股份有限公司 一种滚珠丝杠双向调节预紧机构
CN105479238A (zh) * 2016-01-18 2016-04-13 南通国盛机电集团有限公司 一种丝杆锁紧螺母防松结构
CN106078176A (zh) * 2016-06-30 2016-11-09 广州市高品机床有限公司 一种丝杆预拉伸安装结构
CN106425639A (zh) * 2016-08-30 2017-02-22 重庆威诺克智能装备股份有限公司 一种数控机床的进给传动结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020155226A1 (zh) * 2019-01-31 2020-08-06 大连理工大学 基于热误差和温升加权的丝杠预紧量确定方法
US11467066B2 (en) 2019-01-31 2022-10-11 Dalian University Of Technology Method for determining the preload value of the screw based on thermal error and temperature rise weighting

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Application publication date: 20181012