WO2015035708A1 - 内球面环精密磨削在位检测装置与自动检测方法 - Google Patents

内球面环精密磨削在位检测装置与自动检测方法 Download PDF

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Publication number
WO2015035708A1
WO2015035708A1 PCT/CN2013/087471 CN2013087471W WO2015035708A1 WO 2015035708 A1 WO2015035708 A1 WO 2015035708A1 CN 2013087471 W CN2013087471 W CN 2013087471W WO 2015035708 A1 WO2015035708 A1 WO 2015035708A1
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Prior art keywords
grinding
inner spherical
displacement sensor
ring
precision
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PCT/CN2013/087471
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English (en)
French (fr)
Inventor
胡德金
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上海交通大学
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Publication of WO2015035708A1 publication Critical patent/WO2015035708A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B11/00Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor

Definitions

  • the invention relates to a precision grinding detecting device in the technical field of machine tools, in particular to an inner spherical ring precision grinding in-position detecting device and an automatic detecting method. Background technique
  • High-end hard-sealed ball valves are key components for the control of fluids, gases, solid-liquid and dual-medium fluids in energy engineering such as coal chemical, petrochemical, and photovoltaic power generation. These ball valves are often subjected to high temperatures, high pressures, wear, corrosion, etc. Working conditions. Since they generally work in high temperature and high pressure environments, the sealing requirements are quite high, and often they are hard sealed.
  • a spherical surface of the ball valve is usually coated with a high hardness material such as WC and M60 with high wear resistance, and the inner spherical ring matched with it.
  • the seal needs to be sprayed with the corresponding high hardness alloy material. These high-hard alloy materials are difficult to handle with ordinary turning and milling.
  • the current effective method is precision grinding.
  • the shape accuracy of the spherical inner ring seal ring is also very high.
  • the traditional machining method is to perform the precision grinding of the ball first, and the inner spherical ring according to the spherical body tolerance. The seal is machined and then mated. If the dimensional accuracy of the inner spherical ring seal differs from the dimensional accuracy of the sphere, it can be achieved after a pair of grindings, perhaps after a small amount of grinding.
  • the Chinese patent application number is: 201110188757. 4
  • the name is: Pneumatic spherical grinding and shaping device, mainly by adjusting the length of the extension rod in the pneumatic grinding machine to meet the radius requirement of the grinding spherical surface, the installation adjustment is in place. After that, the air pump is turned on, and the pneumatic grinding machine can polish the inner spherical surface of the casing.
  • the device uses the positioning hole of the housing for positioning, and manually adjusts the radius of the grinding device for grinding. It belongs to a special grinding method, but lacks in-situ precision detection of the dimensional accuracy of the workpiece.
  • an object of the present invention is to provide an inner spherical ring precision grinding in-position detecting device and an automatic detecting method, and the device and method of the invention realize the dimensional accuracy of the grinding inner spherical ring Automatic in-situ precision inspection.
  • an inner spherical ring precision grinding in-position detecting device comprising: a bottom plate, a swing arm, a swing cylinder and a precision displacement sensor, wherein: the bottom plate is fixedly mounted on a top surface of the grinding spindle system; The cylinder is fixedly mounted on the bottom plate; one end of the swing arm is fixedly coupled with the rotating shaft of the swinging cylinder, and the swing arm is reciprocally oscillated by 90° under the driving of the swinging cylinder; and the precision displacement sensor is fixedly mounted on the swing arm, and the other preferably The oscillating arm is rotated 90 ° under the driving of the oscillating cylinder.
  • the oscillating cylinder rotates clockwise, so that the detection contact of the precision displacement sensor is located on the Y coordinate axis rotation center line of the grinding spindle system.
  • the initial calibration position of the detection contact of the precision displacement sensor coincides with the center line of the Z coordinate axis of the swing positioning axis. This point is the detection zero point.
  • the swing cylinder swings 90 ° counterclockwise to return the swing arm to the original position.
  • an automatic detection method for in-situ precision grinding of an inner spherical ring using the above apparatus comprising:
  • the swing arm fixedly coupled with the swinging cylinder rotating shaft rotates clockwise, so that the detecting contact of the precision displacement sensor is located on the Y-axis rotation center line of the grinding spindle system, and the precision displacement sensor
  • the initial calibration position of the detecting contact coincides with the center line of the Z coordinate axis of the swing positioning axis; after the installation adjustment is completed, the swing arm fixedly coupled with the rotating shaft of the swinging cylinder is rotated counterclockwise by 90° to return the swing arm to the original position;
  • the second step in the precision grinding processing application, the inner spherical ring precision grinding in-position detecting device moves along the Y-coordinate axial inner spherical ring direction with the grinding spindle system; the third step, in the grinding process, according to Control requirements, when it is necessary to test, the grinding spindle system leaves the inner spherical ring along the Y coordinate axis, so that the grinding wheel grinding tool leaves the inner spherical ring for a distance, the inner spherical ring and the grinding wheel grinding tool stop rotating, and the swinging arm is driven by the swinging cylinder Doing a clockwise swing of 90°, the precision displacement sensor mounted on the swing arm is in front of the grinding wheel; the grinding spindle system moves along the Y-axis axial inner spherical ring, when the precision displacement sensor on the swing arm contacts When the surface of the inner spherical ring is reached, the control system stops the grinding spindle system.
  • the control system records the distance of the precision displacement sensor from the detection zero point to the contact of the precision displacement sensor to the inner spherical ring surface.
  • the detection accuracy of the radius value R of the inner spherical ring depends on the precision of the precision displacement sensor and the positioning accuracy of the feed movement of the grinding spindle system.
  • the present invention has the following beneficial effects:
  • the invention discloses an inner spherical ring precision grinding in-position detecting device and an automatic detecting method according to the invention, which overcomes the defects that rely on the manual use of the sample transparent observation method to make the detection precision be affected by human factors, and realizes the grinding process.
  • In-process automatic precision inspection of the dimensional accuracy of spherical workpieces in the process without manual intervention, high degree of automation, simple structure of detection device and reliable detection method.
  • FIG. 1 is a structural arrangement diagram of a precision grinding in-position detecting device for an inner spherical ring of the present invention
  • FIG. 2 is a schematic view showing zero calibration of the in-position detecting device of the inner spherical ring in the present invention
  • Figure 3 is a positional view of the inner spherical ring precision grinding in-position detecting device during grinding according to the present invention
  • Fig. 4 is a schematic view showing the in-position detection of the in-situ detection device for the inner spherical ring of the present invention.
  • 1 is the grinding spindle system
  • 2 is the grinding wheel grinding tool
  • 3 is the inner spherical ring
  • 4 is the bottom plate
  • 5 is the swinging arm
  • 6 is the swinging cylinder
  • 7 is the precision displacement sensor.
  • the embodiment provides an inner spherical ring precision grinding in-position detecting device, and the device comprises a bottom plate 4, a swing arm 5, a swinging cylinder 6 and a precision displacement sensor 7, wherein: the bottom plate 4 is fixedly mounted on Grinding the top surface of the spindle system 1; the swinging cylinder 6 is fixedly mounted on the bottom plate 4; one end of the swinging arm 5 is fixedly coupled to the rotating shaft of the swinging cylinder 6; a precision displacement sensor 7 is fixedly mounted on the other end of the swinging arm 5,
  • the detection resolution of the precision displacement sensor 7 of the present embodiment is 0.5 ⁇ m, and the displacement sensor larger than the detection resolution is also applicable.
  • the swing arm 5 is rotated 90° under the driving of the swing cylinder 6, specifically:
  • the swing cylinder 6 rotates clockwise, so that the detection contact of the precision displacement sensor 7 is located on the Y-axis rotation center line of the grinding spindle system 1, and the precision displacement sensor 7 detects the initial calibration position of the contact and the swing positioning axis.
  • the center line of the Z coordinate axis coincides, and this point is the detection zero point; after the installation adjustment is completed, the swing cylinder 6 is rotated 90° counterclockwise to return the swing arm 5 to the original position.
  • the inner spherical ring 3 rotates around the center line of the X coordinate axis to perform a rotational motion N1, and can also perform a left and right linear feed motion along the X coordinate axis;
  • the grinding wheel 2 mounted on the front end of the grinding spindle system 1 is wound around the Y coordinate
  • the rotation center line of the shaft is rotated by N2, and the grinding spindle system 1 performs linear feed motion along the Y coordinate axis;
  • the grinding spindle system 1 makes a reciprocating oscillating motion C around the center line of the Z coordinate axis;
  • the axis of rotation of the shaft remains in the same horizontal plane and intersects perpendicularly to the centerline of the Z coordinate axis, which is the center 0 of the inner spherical ring 1.
  • the embodiment provides an automatic detection method for the precision grinding of the inner spherical ring, and the specific method is as follows:
  • the swing arm 5 fixedly coupled with the rotating shaft of the swing cylinder 6 rotates clockwise, so that the detecting contact of the precision displacement sensor 7 is located at the grinding spindle.
  • the Y coordinate axis of the system 1 is rotated on the center line, and the initial calibration position of the detection contact of the precision displacement sensor 7 coincides with the center line of the Z coordinate axis, which is the detection zero point; after the installation adjustment is completed, it is fixed with the rotation axis of the swing cylinder 6.
  • the coupled swing arm 5 is rotated 90° counterclockwise to return the swing arm 5 to its original position.
  • the inner spherical ring precision grinding in-position detecting device moves along the Y-axis axial inner spherical ring 3 with the grinding spindle system 1.
  • the grinding spindle system 1 leaves the inner spherical ring 3 along the Y coordinate axis, so that the grinding wheel 2 is separated from the inner spherical ring by a distance of 3, the inner spherical ring 3 and The grinding wheel 2 stops rotating, and the swing arm 5 is rotated clockwise by 90 ° under the driving of the swinging cylinder 6, at which time the precision displacement sensor 7 mounted on the other end of the swing arm 5 is in front of the grinding wheel 2; The spindle system 1 moves in the Y-coordinate axial inner spherical ring 3 direction.
  • the control system stops the grinding spindle system 1 from moving, and the control system records the precision.
  • the distance from the detection zero point to the precision displacement sensor ⁇ contacting the surface of the inner spherical ring 3 is the radius value R of the inner spherical ring 3, and the detection accuracy depends on the accuracy of the tool setting sensor 7 and the grinding spindle system 1 Positioning accuracy for movement.
  • the defect that the detection precision is affected by human factors is overcome by the current light-transparent observation method of the artificial sample, and the grinding process is realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

一种内球面环精密磨削在位检测装置,该装置包括底板(4)、摆动臂(5)、摆动气缸(6)和精密位移传感器(7)。一种采用上述装置的自动检测方法,所述方法是:在磨削加工应用中当需要检测时,磨削主轴系统(1)自动沿Y坐标轴离开内球面环,使砂轮磨具(2)离开内球面环(3),内球面环和砂轮磨具停止旋转,摆动臂在摆动气缸的驱动下做顺时针摆动90°,此时精密位移传感器处于砂轮磨具的正前方;磨削主轴系统沿Y坐标轴向内球面环方向移动,当精密位移传感器接触到内球面环表面时,使磨削主轴系统停止移动,记录下精密位移传感器从检测零点到精密位移传感器接触到内球面环表面时的距离即为内球面环的半径值R。该方法实现了在磨削加工过程中内球面工件尺寸精度的在位自动精密检测,自动化程度高。

Description

内球面环精密磨削在位检测装置与自动检测方法 技术领域
本发明涉及的是一种机床技术领域的精密磨削检测装置, 具体的涉及一种内球 面环精密磨削在位检测装置与自动检测方法。 背景技术
高端硬密封球阀是煤化工、 石油化工、 光伏发电等能源工程领域中流体、 气体、 固 液双介质流体等控制的关键部件, 这类球阀往往需承受高温、 高压、 磨损、 腐蚀等十分 恶劣的工况条件。 由于一般都工作在高温、 高压环境中, 密封要求相当高, 往往都采取 硬密封方式。 为了提高其耐高温、 耐高压、 耐腐蚀和耐磨损的性能, 通常在球阀的球体 表面喷涂了一层具有很高耐磨强度的 WC、 M60等高硬度材料, 与其相配合的内球面环 密封圈需要喷涂相应的高硬度合金材料。 这些高硬合金材料用普通的车削、 铣削加工非 常困难, 目前有效方法是采用精密磨削加工。 另一方面, 由于严格的密封要求, 球体与 其相配合的内球面环密封圈的形状精度要求也很高,传统的加工方法是先进行球体的精 密磨削加工, 根据球体尺寸公差对内球面环密封圈进行加工, 然后进行配对研磨。 如果 内球面环密封圈尺寸精度与球体的尺寸精度相差较小, 通过配对研磨后, 或许经少量研 磨后就可以达到要求。 但是, 如果内球面环密封圈的尺寸精度与球体的尺寸精度相差较 大, 即使进行配对研磨, 不但研磨不好, 反之, 由于过度研磨往往造成球体形状精度受 到破坏。 这一问题的关键是: 在磨削过程中, 砂轮磨具的磨损是很难预测的, 只有对工 件直接检测才能保证其尺寸精度, 然而, 到目前为止, 该行业内, 还未见有内球面环在 精密磨削过程中尺寸精度的在位检测手段。
经对现有技术的文献检索发现, 中国专利申请号为: 201110188757. 4, 名称为: 气 动球面打磨整形装置,主要通过调整气动打磨机中延长杆的长度满足打磨球面的半径要 求, 安装调整到位后, 开启气泵, 气动打磨机即可对壳体的内球面进行打磨。 该装置应 用壳体的定位孔进行定位, 人工调整打磨装置的半径进行打磨, 属于专用的磨削方法, 但缺乏磨削加工工件尺寸精度的在位精密检测。 发明内容 针对现有技术中的缺陷, 本发明的目的是提供一种内球面环精密磨削在位检测 装置与自动检测方法, 运用本发明所述装置和方法实现了磨削内球面环尺寸精度的 在位自动精密检测。
根据本发明的一个方面, 提供一种内球面环精密磨削在位检测装置, 包括: 底 板、 摆动臂、 摆动气缸和精密位移传感器, 其中: 底板固定安装在磨削主轴系统的顶 面; 摆动气缸固定安装在底板上; 摆动臂的一端与摆动气缸的旋转轴固定联接, 摆 动臂在摆动气缸的驱动下做 90 ° 往复摆动;精密位移传感器固定安装在摆动臂的另一 优选地, 所述摆动臂在摆动气缸的驱动下做 90 ° 往复摆动, 具体是: 在安装调 整时, 摆动气缸顺时针旋转, 使精密位移传感器的检测触点位于磨削主轴系统的 Y 坐标轴旋转中心线上, 精密位移传感器的检测触点初始标定位置与摆动定位轴 Z坐 标轴中心线重合, 该点即为检测零点; 安装调整完毕后,摆动气缸逆时针摆动 90 ° 使摆动臂回到原始位置。
根据本发明的另一方面, 提供一种采用上述装置的内球面环精密磨削在位自动 检测方法, 所述方法具体步骤包括:
第一步、在初始安装调整时, 与摆动气缸转动轴固定联接的摆动臂顺时针旋转, 使 精密位移传感器的检测触点位于磨削主轴系统的 Y坐标轴旋转中心线上,精密位移传感 器的检测触点初始标定位置与摆动定位轴 Z 坐标轴中心线重合; 安装调整完毕后, 与 摆动气缸转动轴固定联接的摆动臂逆时针旋转 90° , 使摆动臂回到原始位置;
第二步、在精密磨削加工应用过程中, 内球面环精密磨削在位检测装置随磨削主轴 系统沿 Y坐标轴向内球面环方向移动; 第三步、 在磨削过程中, 根据控制要求, 当需要检测时, 磨削主轴系统沿 Y坐标 轴离开内球面环, 使砂轮磨具离开内球面环一段距离, 内球面环和砂轮磨具停止旋转, 摆动臂在摆动气缸的驱动下做顺时针摆动 90° ,此时安装在摆动臂上的精密位移传感器 处于砂轮磨具的前方位置; 磨削主轴系统沿 Y坐标轴向内球面环方向移动, 当摆动臂上 的精密位移传感器接触到内球面环表面时, 控制系统使磨削主轴系统停止移动, 控制系 统记录下精密位移传感器从检测零点到精密位移传感器接触到内球面环表面时的距离 即为内球面环的半径值^ 优选地, 所述内球面环的半径值 R 的检测精度取决于精密位移传感器的精度和 磨削主轴系统进给移动的定位精度。
与现有技术相比, 本发明具有如下的有益效果:
应用本发明所述的一种内球面环精密磨削在位检测装置与自动检测方法, 克服 了目前依赖人工用样板透光观察方法使检测精度受人为因素影响的缺陷, 实现了在 磨削加工过程中内球面工件尺寸精度的在位自动精密检测, 无需人工干预, 自动化程度 高, 检测装置结构简单、 检测方法可靠。 附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述, 本发明的其它特 征、 目的和优点将会变得更明显:
图 1为本发明内球面环精密磨削在位检测装置结构布置图;
图 2为本发明内球面环精密磨削在位检测装置对零标定示意图;
图 3 为本发明内球面环精密磨削在位检测装置在磨削时的位置图;
图 4 为本发明内球面环精密磨削在位检测装置在位检测示意图。
图中: 1为磨削主轴系统、 2为砂轮磨具、 3为内球面环、 4为底板、 5为摆动 臂、 6为摆动气缸、 7为精密位移传感器。 具体实施方式
下面结合具体实施例对本发明进行详细说明。 以下实施例将有助于本领域的技术人 员进一步理解本发明, 但不以任何形式限制本发明。 应当指出的是, 对本领域的普通技 术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干变形和改进。 这些都属于 本发明的保护范围。
如图 1所示, 本实施例提供一种内球面环精密磨削在位检测装置, 所述装置包 括底板 4、 摆动臂 5、 摆动气缸 6和精密位移传感器 7, 其中: 底板 4固定安装在磨 削主轴系统 1的顶面; 摆动气缸 6固定安装在底板 4上; 摆动臂 5的一端与摆动气 缸 6的转动轴固定联接; 在摆动臂 5的另一端固定安装有一个精密位移传感器 7, 本实施例的精密位移传感器 7的检测分辨率为 0. 5μπι, 大于该检测分辨率的位移传 感同样适用。
本实施例中, 所述摆动臂 5在摆动气缸 6的驱动下做 90 ° 往复摆动, 具体是: 在安装调整时, 摆动气缸 6顺时针旋转, 使精密位移传感器 7的检测触点位于磨削 主轴系统 1的 Y坐标轴旋转中心线上, 精密位移传感器 7检测触点初始标定位置与 摆动定位轴 Z坐标轴中心线重合, 该点即为检测零点; 安装调整完毕后, 摆动气缸 6逆时针摆动 90 ° , 使摆动臂 5回到原始位置。
本实施例中, 内球面环 3绕 X坐标轴旋转中心线做旋转运动 Nl, 也可以沿 X坐标 轴做左右直线进给运动; 安装在磨削主轴系统 1前端的砂轮磨具 2绕 Y坐标轴旋转中心 线做旋转运动 N2, 磨削主轴系统 1沿 Y坐标轴做直线进给运动; 磨削主轴系统 1绕 Z 坐标轴中心线作往复摆动运动 C; X坐标轴旋转中心线、 Y坐标轴旋转中心线保持在同一 水平面内并与 Z坐标轴中心线垂直相交, 该交点即是内球面环 1的球心 0。
如图 2、 图 3、 图 4所示, 本实施例提供一种内球面环精密磨削在位自动检测 方法, 具体的:
如图 2所示, 内球面环精密磨削在位检测装置安装调整时, 与摆动气缸 6的转 动轴固定联接的摆动臂 5顺时针旋转, 使精密位移传感器 7的检测触点位于磨削主 轴系统 1的 Y坐标轴旋转中心线上, 精密位移传感器 7的检测触点初始标定位置与 Z坐标轴中心线重合, 该点即为检测零点; 安装调整完毕后, 与摆动气缸 6的转动 轴固定联接的摆动臂 5逆时针旋转 90 ° , 使摆动臂 5回到原始位置。
如图 3所示, 磨削加工开始后, 内球面环精密磨削在位检测装置随磨削主轴系 统 1沿 Y坐标轴向内球面环 3方向移动。
如图 4所示, 在磨削过程中当需要检测时, 磨削主轴系统 1沿 Y坐标轴离开内 球面环 3, 使砂轮磨具 2离开内球面环 3—段距离, 内球面环 3和砂轮磨具 2停止 旋转, 摆动臂 5在摆动气缸 6的驱动下做顺时针摆动 90 ° , 此时安装在摆动臂 5另 一端的精密位移传感器 7处于砂轮磨具 2的正前方位置; 磨削主轴系统 1沿 Y坐标 轴向内球面环 3方向移动, 当摆动臂 5上的精密位移传感器 7接触到内球面环 3表 面时, 控制系统使磨削主轴系统 1停止移动, 控制系统记录下精密位移传感器 7从 检测零点到精密位移传感器 Ί接触到内球面环 3表面时的距离即为内球面环 3的半 径值 R, 其检测精度取决于对刀传感器 7的精度和磨削主轴系统 1进给移动的定位 精度。
通过上述实施例的一种内球面环精密磨削在位检测装置和自动检测方法, 克服 了目前依赖人工用样板透光观察方法使检测精度受人为因素影响的缺陷, 实现了在 磨削加工过程中内球面工件尺寸精度的在位自动精密检测, 无需人工干预, 自动化程度 高, 检测装置结构简单、 检测方法可靠。
以上对本发明的具体实施例进行了描述。 需要理解的是, 本发明并不局限于上 述特定实施方式, 本领域技术人员可以在权利要求的范围内做出各种变形或修改, 这并不影响本发明的实质内容。

Claims

权 利 要 求 书
1、 一种内球面环精密磨削在位检测装置, 其特征在于, 所述装置包括: 底板、 摆 动臂、 摆动气缸和精密位移传感器, 其中: 底板固定安装在磨削主轴系统的顶面; 摆动 气缸固定安装在底板上; 摆动臂的一端与摆动气缸的转动轴固定联接, 摆动臂在摆动 气缸的驱动下做 90 ° 往复摆动; 精密位移传感器固定安装在摆动臂的另一端。
2、 根据权利要求 1所述的一种内球面环精密磨削在位检测装置, 其特征在于, 所 述摆动臂在摆动气缸的驱动下做 90 ° 往复摆动, BP : 在安装调整时, 摆动气缸顺时 针旋转,使精密位移传感器的检测触点位于磨削主轴系统的 Y坐标轴旋转中心线上, 精密位移传感器的检测触点初始标定位置与摆动定位轴 Z坐标轴中心线重合, 该点 即为检测零点; 安装调整完毕后, 摆动气缸逆时针摆动 90 ° , 使摆动臂回到原始位 置。
3、 一种采用权利要求 1所述装置的内球面环精密磨削在位自动检测方法, 其特征 在于, 所述方法具体步骤包括:
第一步、在初始安装调整时, 与摆动气缸转动轴固定联接的摆动臂顺时针旋转, 使 精密位移传感器的检测触点位于磨削主轴系统的 Y坐标轴旋转中心线上,精密位移传感 器的检测触点初始标定位置与摆动定位轴 Z坐标轴中心线重合; 安装调整完毕后, 与摆 动气缸转动轴固定联接的摆动臂逆时针旋转 90° , 使摆动臂回到原始位置;
第二步、在精密磨削加工应用过程中, 内球面环精密磨削在位检测装置随磨削主轴 系统沿 Y坐标轴向内球面环方向移动;
第三步、 在磨削过程中, 根据控制要求, 当需要检测时, 磨削主轴系统自动沿 Y 坐标轴离开内球面环, 使砂轮磨具离开内球面环一段距离, 内球面环和砂轮磨具停止旋 转,摆动臂在摆动气缸的驱动下做顺时针摆动 90° ,此时安装在摆动臂上的精密位移传 感器处于砂轮磨具的正前方位置; 磨削主轴系统沿 Y坐标轴向内球面环方向移动, 当摆 动臂上的精密位移传感器接触到内球面环表面时, 控制系统使磨削主轴系统停止移动, 控制系统记录下精密位移传感器从检测零点到精密位移传感器接触到内球面环表面时 的距离即为内球面环的半径值1^。
4、根据权利要求 3所述的一种内球面环精密磨削在位自动检测方法, 其特征在于, 所述内球面环的半径值 R的检测精度取决于精密位移传感器的精度和磨削主轴系统进给 移动的定位精度。
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