WO2022017224A1 - 木材锯切校正装置及优选锯 - Google Patents

木材锯切校正装置及优选锯 Download PDF

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Publication number
WO2022017224A1
WO2022017224A1 PCT/CN2021/105990 CN2021105990W WO2022017224A1 WO 2022017224 A1 WO2022017224 A1 WO 2022017224A1 CN 2021105990 W CN2021105990 W CN 2021105990W WO 2022017224 A1 WO2022017224 A1 WO 2022017224A1
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Prior art keywords
wood
unit
sawing
correction device
saw
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PCT/CN2021/105990
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English (en)
French (fr)
Inventor
王林
杨华清
宋冰
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优铠(上海)机械有限公司
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Publication of WO2022017224A1 publication Critical patent/WO2022017224A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B13/00—Band or strap sawing machines; Components or equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B13/00—Band or strap sawing machines; Components or equipment therefor
    • B27B13/16—Accessories, e.g. for cooling the saw blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B27/00—Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon

Definitions

  • the utility model relates to a wood sawing correction device and an optimal saw, belonging to the technical field of wood processing.
  • the preferred saws on the market as wood roughing equipment generally have the problem of low processing accuracy, and it is difficult to achieve an accuracy of ⁇ 0.5mm during sawing.
  • the first reason is the machining error of the mechanical transmission device itself; the second is that there is no reliable measurement method to accurately measure the actual sawing length and then compensate and correct it.
  • the measurement method of sawing length is generally contact measurement, that is, a metal pressure wheel is set at the feed of the preferred saw, and an encoder is installed behind the metal pressure wheel.
  • the metal pressure wheel presses the wood, and the metal pressure wheel is completely made of wood.
  • Drive calculate the length of sawn wood through the feedback value of the encoder and the circumference of the metal pressing wheel.
  • the pressure exerted by the metal pressure wheel on the wood may cause the wood Length changes, further reducing its measurement accuracy.
  • the preferred saw for belt feeding all measure and feed the wood in the feeding direction
  • the precision control is all processed at the feeding end
  • the average tolerance is ⁇ 1.5mm.
  • the technical problem to be solved by the utility model is to provide a wood sawing correction device and an optimal saw for the deficiencies of the prior art.
  • the error value of the wood running is obtained through a non-contact displacement measuring unit and then corrected, which perfectly solves the problem of wood processing.
  • the precision can be steadily improved to within ⁇ 0.5mm, making the optimal saw a device with fast processing speed and high precision.
  • the utility model provides a wood sawing correction device, which comprises a detection unit and a control unit;
  • the detection unit includes a driving positioning unit, a non-contact displacement measuring unit arranged on the driving positioning unit, and A detection and calculation unit, the detection and calculation unit is configured to calculate an error value after the wood is run and sawed according to the measurement result of the non-contact displacement measurement unit, and the control unit is configured to control the drive positioning unit to drive the
  • the non-contact displacement measuring unit moves, receives the detection signal of the detection unit and transmits the detection signal to the control system of the preferred saw;
  • the wood sawing correction device is arranged at the discharge end of the preferred saw, and the driving and positioning unit drives the non-contact displacement measuring unit to move in a direction parallel to the running path of the wood.
  • the driving positioning unit is a mechanical arm, a rocker device or a sliding table.
  • the sliding table is preferably a synchronous belt sliding table.
  • the precision of the synchronous belt slide table is 0.1mm.
  • the non-contact displacement measuring unit is a displacement sensor or a camera.
  • the accuracy of the camera is 0.019mm.
  • the driving positioning unit is arranged on the side or above the running path of the wood.
  • the distance between the initial position of the non-contact displacement measurement unit and the kerf of the preferred saw is more than 600mm.
  • the position where the non-contact displacement measuring unit is measured corresponds to the sawing length.
  • the present invention also provides a preferred saw, the wood sawing correction device as described above is provided at the discharge end of the preferred saw.
  • the present utility model obtains the error value of wood running through the non-contact displacement measuring unit and then corrects it, which perfectly solves the problem of low wood processing accuracy.
  • the accuracy can be stably improved to within ⁇ 0.5mm , so that the optimal saw has become a device with fast processing speed and high precision.
  • Fig. 1 is the structural representation of the preferred saw of the present invention
  • Fig. 2 is the partial structure diagram of the preferred saw of the present utility model
  • FIG. 3 is a schematic structural diagram of the wood sawing and correcting device of the present invention.
  • Fig. 1 is the structural schematic diagram of the preferred saw of the present invention
  • Fig. 2 is the partial structural diagram of the preferred saw of the present utility model
  • Fig. 3 is the structural schematic diagram of the wood sawing correction device of the present invention.
  • the utility model provides a wood sawing correction device 400, the wood sawing correction device 400 includes a detection unit and a control unit; the detection unit includes a driving positioning unit 410, a non-contacting device disposed on the driving positioning unit 410
  • the displacement measurement unit 420 and the detection and calculation unit, the detection and calculation unit is configured to calculate the error value of the wood running sawing length according to the measurement result of the non-contact displacement measuring unit 420, that is, the difference between the actual moving length and the sawing length
  • the control unit is configured to control the driving positioning unit to drive the camera of the non-contact displacement measuring unit to move, receive the detection signal of the detection unit and transmit the detection signal to the control system of the preferred saw.
  • the preferred saw includes a scribing table 100, a measuring station 200, a preferred saw host 300, a sorting kick 500, a control system, and the like.
  • the control system is electrically connected to the control unit of the wood sawing correction device 400 .
  • each length of the wood will be measured (if there is no fluorescent mark, the entire length of the wood will be measured), and the measured length will be optimized through the control system. Data on the required sawing length for each piece of wood.
  • the wood then travels to the preferred saw host 300 for positioning sawing.
  • the sawing process is that the wood runs for a length of sawing first, and after stopping, the saw blade at the saw edge 310 is lifted for cutting, and after the cutting is completed, the saw blade falls, and the wood runs for another length of sawing, and so on.
  • the running of a sawing length can be realized by the photoelectric sensor 320 in the preferred saw host 300 and the feeding servo system. Specifically, after the wood enters the optimal sawing host 300, the pressing wheel will press the wood, and the feeding servo system will make the wood move forward (the direction of feeding to discharging), and will be sensed by the photoelectric sensor 320 during the running process.
  • the distance between the photoelectric sensor 320 and the saw kerf 310 is a fixed value S.
  • S the length of the first segment of a piece of wood to be sawed.
  • the sawed length is L1, where S+L1 is the sawing length of the first segment of the wood.
  • the wood can be sawed after continuing to move the lengths of L2,..., Ln, where L2,..., Ln is the cutting length of the second to n sections respectively.
  • the wood is taken out by the discharge conveying body (such as a discharge belt) of the preferred saw main machine 300, and then the wood is kicked out by the sorting kick 500.
  • the discharge conveying body such as a discharge belt
  • the wood sawing correction device 400 is installed on the discharge end of the preferred saw, and the driving and positioning unit 410 drives the non-contact displacement measuring unit to move in a direction parallel to the running path of the wood .
  • the non-contact displacement measurement unit is a displacement sensor or a camera, and the displacement sensor is, for example, a diffuse reflection sensor or a displacement sensor.
  • the non-contact displacement measuring unit is taken as an example for the camera to be described.
  • the detection and calculation unit can be realized by a microcomputer or a controller.
  • the driving and positioning unit 410 may be a robotic arm, a rocker device, a sliding table, or the like.
  • the sliding table is a rack and pinion sliding table or a synchronous belt sliding table, which is used to drive the non-contact displacement measuring unit to a working position, so as to measure the above-mentioned error value.
  • the driving and positioning unit 410 is taken as an example for the synchronous belt slide table for description.
  • the synchronous belt slide table includes components such as a synchronous belt, a motor, a guide rail, and a slider set on the guide rail.
  • the camera can be fixed on the slider by bonding, bolting, welding or the like.
  • the accuracy of the synchronous belt slide table is preferably 0.1 mm, and the accuracy of the camera is preferably 0.019 mm.
  • the present invention does not limit the sliding distance of the synchronous belt sliding table, and those skilled in the art can select a suitable synchronous belt sliding table according to the length of the wood to be sawed.
  • the distance between the initial position of the non-contact displacement measurement unit 420 (camera) and the saw edge 310 is preferably more than 600 mm.
  • the detection and calculation unit calculates the error value of the wood running sawing length according to the image captured by the camera.
  • the control system of the preferred saw transmits the saw length to the control unit of the wood sawing correction device 400, and the control unit according to the saw
  • the cutting length control drives the positioning unit 410 to move with the camera to the theoretical position of the end of the wood to be sawed away from the saw 310 .
  • the shooting center of the camera coincides with the theoretical position of the end of the wood.
  • the camera shoots, and the imaged wood image obtains the edge coordinates of one end of the wood through the difference between the grayscale and the outline of the background (the wood is generally yellow and white). Since the pixels of the image correspond to the actual length, the pixel difference from the center of the image to the edge of the wood end can be converted into the actual length, which is the error value.
  • the non-contact displacement measurement unit 420 is a diffuse reflection sensor or a displacement sensor, the measurement method thereof may adopt the measurement method in the prior art, which will not be repeated here.
  • the driving positioning unit 410 is arranged on the side or above the wood running path, and the non-contact displacement measuring unit 420 is arranged on the side or above the wood running path.
  • the color of the discharge conveying body under the wood is set to a color that is quite different from the color of the wood, such as black, blue or green.
  • a background plate black, blue or green, etc.
  • the present invention does not limit the specific positions of the camera and the wood running path, and those skilled in the art can modify the design according to actual needs.
  • the sawing, feeding and transmission of the preferred saw are all responsive in milliseconds, and the speed is fast.
  • the existing instant communication protocol can be used for data transmission between the control unit of the wood sawing correction device in the present invention and the control system of the preferred saw, and the error value is generally several millimeters, so it is preferred that the saw moves at its own speed.
  • the correction of the error value can be completed at the millisecond level, and the speed of the optimal saw itself is hardly reduced.
  • the present invention also provides a preferred saw, the wood sawing correction device as described above is provided at the discharge end of the preferred saw.
  • the control system of the preferred saw corrects the position of the wood according to the detection signal of the wood sawing correction device.
  • the wood sawing correction device is arranged at the discharge end of the optimal saw, re-measures the length of the wood specification, and then feeds back the error value (correction value) to the optimal saw for compensation and correction, thereby improving the accuracy;
  • the wood sawing correction device uses a non-contact displacement measurement unit to measure, no contact with the wood and no pressure, no contact can achieve accurate measurement of the non-planar wood end face, avoid the deviation of the roller and contact measurement, no pressure to avoid the wood Due to the deviation caused by normal bending deformation, the length accuracy of the wood in the natural state is guaranteed.
  • the wood After the wood is scribed and measured by the scribing table 100 and the measuring station 200, it runs into the preferred sawing host 300 for positioning and sawing.
  • the slider of the synchronous belt slide table drives the camera to move to the position of this length (relative to the saw edge). ), that is, the position of the one end, in other words, the position of the non-contact displacement measuring unit 420 (camera) when measuring (when taking an image) corresponds to the sawing length, so that the wood is The end away from the kerf 310 is located within the measurement range of the non-contact displacement measurement unit 420 (the shooting range of the camera).
  • the camera takes a picture, and the detection and calculation unit calculates the error value according to the photo taken by the camera, and then generates a detection signal containing the error value. Send it to the control unit, and the control unit transmits the detection signal to the control system of the preferred saw, and the preferred saw controls the wood to move the error value according to the error value for correction, and then performs sawing after the correction is completed. .
  • Table 1 shows the comparison of the sawing accuracy data of the preferred saw with the wood sawing correction device of the present invention and the preferred saw without the wood sawing correction device of the present invention.
  • the utility model is provided with a wood sawing correction device at the discharge end of the optimal saw, and the error value of the wood running is obtained through the non-contact displacement measuring unit and then corrected, which perfectly solves the problem of low wood processing accuracy.
  • the accuracy can be steadily improved to within ⁇ 0.5mm, making the optimal saw a device with fast processing speed and high precision.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

Abstract

一种木材锯切校正装置（400）及优选锯，木材锯切校正装置（400）包括检测单元和控制单元；检测单元包括驱动定位单元（410）、设置在驱动定位单元（410）上的非接触位移测量单元（420）以及检测计算单元，检测计算单元被配置为根据非接触位移测量单元（420）的测量结果计算木材运行锯切长度后的误差值，控制单元被配置为控制驱动定位单元（410）带动非接触位移测量单元（420）运动，接收检测单元的检测信号以及将检测信号传输至优选锯的控制系统；其中，木材锯切校正装置（400）设置在优选锯的出料端，驱动定位单元（410）带动非接触位移测量单元（420）运动的运动方向与木材的运行路径平行。

Description

木材锯切校正装置及优选锯 技术领域
本实用新型涉及一种木材锯切校正装置及优选锯，属于木材加工技术领域。
背景技术
目前市面上的优选锯作为木材粗加工设备，普遍存在加工精度不高的问题，在锯切的时候很难达到±0.5mm的精度。其原因一是机械传动装置本身的加工误差；二是没有可靠的测量手段来精确测量出实际锯切长度然后进行补偿修正。
目前锯切长度测量方式一般是接触式测量，即在优选锯的进料处设置一金属压轮，并在金属压轮后面安装一个编码器，金属压轮压着木材，金属压轮完全由木材带动，通过编码器的反馈值和金属压轮的周长来计算锯切木材的长度。但由于木材表面的凹凸不平，会导致误差，所以通过这种方式来测量木材长度是不准确的，不能稳定达到较高的精度，另外，金属压轮对木材施加的压力，可能会引起木材的长度变化，进一步降低其测量准确性。
例如，通常的皮带式进料的优选锯，均在进料方向对木材进行测量和进给，精度的控制都是在进料端处理，其平均公差为±1.5mm。在面对橱柜、相框等对精度要求比较高的情况下，很难满足客户的要求。
发明内容
本实用新型所要解决的技术问题在于针对现有技术的不足，提供一种木材锯切校正装置及优选锯，通过非接触位移测量单元获取木材运行的误差值后进行修正，完美的解决了木材加工精度不高的问题，通过工厂大量测试，精度能够稳定提高到±0.5mm以内，让优选锯成为了加工速度快且精度高的设备。
本实用新型所要解决的技术问题是通过如下技术方案实现的：
本实用新型提供一种木材锯切校正装置，所述木材锯切校正装置包括检测单元和控制单元；所述检测单元包括驱动定位单元、设置在所述驱动定位单元上的非接触位移测量单元以及检测计算单元，所述检测计算单元被配置为根据所述非接触位移测量单元的测量结果计算木材运行锯切长度后的误差值，所述控制单元被配置为控制所述驱动定位单元带动所述非接触位移测量单元运动，接收所述检测单元的检测信号以及将所述检测信号传输至优选锯的控制系统；
其中，所述木材锯切校正装置设置在所述优选锯的出料端，所述驱动定位单元带动所述非接触位移测量单元运动的运动方向与所述木材的运行路径平行。
为了使所述非接触位移测量单元移动到工作位置，所述驱动定位单元为机械手臂、摇杆装置或者滑台。
由于同步带滑台具有响应快，速度快等特征，所述滑台优选为同步带滑台。
为了准确测量误差值，所述同步带滑台的精度为0.1mm。
为了获得误差值，所述非接触位移测量单元为位移传感器或者相机。所述相机的精度为0.019mm。
优选地，所述驱动定位单元设置在所述木材的运行路径的侧面或者上方。
为了保证测量效率，所述非接触位移测量单元的初始位置与所述优选锯的锯口之间的距离为600mm以上。
所述非接触位移测量单元测量时所处的位置与所述锯切长度对应。
本实用新型还提供一种优选锯，所述优选锯的出料端设置有如上所述的木材锯切校正装置。
综上所述，本实用新型通过非接触位移测量单元获取木材运行的误差值后进行修正，完美的解决了木材加工精度不高的问题，通过工厂大量测试，精度能够稳定提高到±0.5mm以内，让优选锯成为了加工速度快且精度高的设备。
下面结合附图和具体实施例，对本实用新型的技术方案进行详细地说明。
附图说明
图1为本实用新型优选锯的结构示意图；
图2为本实用新型优选锯的局部结构图；
图3为本实用新型木材锯切校正装置的结构示意图。
具体实施方式
图1为本实用新型优选锯的结构示意图；图2为本实用新型优选锯的局部结构图；图3为本实用新型木材锯切校正装置的结构示意图。本实用新型提供一种木材锯切校正装置400，所述木材锯切校正装置400包括检测单元和控制单元；所述检测单元包括驱动定位单元410、设置在所述驱动定位单元410上的非接触位移测量单元420以及检测计算单元，所述检测计算单元被配置为根据所述非接触位移测量单元420的测量结果计算木材运行锯切长度后的误差值，即实际移动长度与锯切长度之间的差值， 所述控制单元被配置为控制所述驱动定位单元带动所述非接触位移测量单元相机运动，接收所述检测单元的检测信号以及将所述检测信号传输至优选锯的控制系统。
所述优选锯包括划线台100、测量站200、优选锯主机300、分选踢腿500以及控制系统等。所述控制系统与所述木材锯切校正装置400的所述控制单元电性连接。
由于木材表面有时会有结疤或存在颜色差异等，根据用途的不同，工人在划线台100上用荧光笔等(一种含有荧光物质的粉笔)在木材上表面进行标识，从而将木材分成不同的质量等级的长度。
之后木材经过测量站200，在测量站200中，木材的每一段长度都会被测量出来(如果无荧光标识则测量整根木材长度)，测量出来的长度经过所述控制系统的优化计算，会形成每一根木材需要的锯切长度的数据。
接着木材运行到优选锯主机300里进行定位锯切。锯切过程为，木材先运行一段锯切长度，停下来以后，锯口310处的锯片抬起进行切割，切割完成后锯片落下，木材再运行一段锯切长度，如此反复。所述运行一段锯切长度可以通过所述优选锯主机300中的光电传感器320以及进料伺服系统实现。具体来说，木材进入优选锯主机300以后，压轮会压住木材，同时进料伺服系统使木材向前(进料至出料的方向)运行，运行的过程中会被光电传感器320感应到，光电传感器320与锯口310之间的距离是固定值S。比如一根木材第一段要锯切的长度是L1，当木材被光电传感器320感应到时，木材再向前移动S+L1的长度停下来，再进行锯切，锯切出来的长度即为L1，其中S+L1则为该木材第一段的锯切长度。类似地，关于第二段锯切长度L2、...、第n段锯切长度Ln，木材继续移动L2、...、Ln长度之后再锯切即可，其中，L2、...、Ln则分别为第2至n段锯切长度。
锯切完成后由所述优选锯主机300的出料传输体(如出料皮带)将木材带出，再由分选踢腿500将木材踢出。
所述优选锯及其工作过程为现有技术，故在此不在赘述。
传统的优选锯无法有效测量木材移动后的锯切长度。例如，要锯切一段2000mm长度的木材时，所述控制系统控制进料伺服电机330木材向前移动使2000mm，但由于传动系统机械本身的误差以及木材打滑等情况，实际移动长度跟2000mm是有误差的，而传统的接触式测量由于木材表面的凹凸不平等，无法进行有效的测量，故无法精确修正误差值。
在本实用新型中，所述木材锯切校正装置400安装在所述优选锯的出料端，且所述驱动定位单元410带动所述非接触位移测量单元运动的运动方向与木材的运行路径 平行。所述非接触位移测量单元为位移传感器或者相机，所述位移传感器例如为漫反射传感器或位移传感器等。在本实用新型中，以非接触位移测量单元为相机作为示例进行说明。所述检测计算单元可以通过微计算机或者为控制器等实现。
所述驱动定位单元410可以为机械手臂、摇杆装置或者滑台等。所述滑台为齿轮齿条滑台或者同步带滑台，其用于带动所述非接触位移测量单元至工作位置，从而对上述误差值进行测量。在本实用新型中，以驱动定位单元410为同步带滑台作为示例进行说明。所述同步带滑台包括同步带、电机、导轨以及设置在导轨上的滑块等组件。所述相机可以通过粘接、螺栓连接、焊接等方式固定在所述滑块上。
为了保证所述木材锯切校正装置400的测量精度，所述同步带滑台的精度优选为0.1mm，所述相机的精度优选为0.019mm。
本实用新型并不限制所述同步带滑台的滑动距离，本领域技术人员可以根据待锯切木材的长度选择合适的同步带滑台。为了保证所述木材锯切校正装置400的测量效率，所述非接触位移测量单元420(相机)的初始位置与所述锯口310之间的距离优选为600mm以上。
可以使用现有的图像处理技术来实现所述检测计算单元根据所述相机拍摄的图像计算木材运行锯切长度后的误差值。例如，所述优选锯在控制木材运行锯切长度时，所述优选锯的控制系统将该锯切长度传输至所述木材锯切校正装置400的所述控制单元，所述控制单元根据该锯切长度控制驱动定位单元410带着相机运动到待锯切木材远离锯口310的一端端头的理论位置，此时相机的拍摄中心和木材所述端头的理论位置重合。之后相机进行拍摄，成像后的木材图像通过与背景的灰度及轮廓差别(木材一般为黄白色)，获得木材一端端头的边沿坐标。由于图像的像素与实际长度相对应，图像中心到木材端头边沿的像素差等可转化成实际长度即为误差值。当非接触位移测量单元420为漫反射传感器或位移传感器时，其测量方法可采用现有技术中的测量方法，在此不再赘述。
所述驱动定位单元410设置在所述木材运行路径的侧面或者上方，所述非接触位移测量单元420设置在所述木材运行路径的侧面或者上方。
具体来说，当所述相机设置在所述木材运行路径的上方时，所述相机对所述木材远离锯口310的一端端头进行拍摄。为了更精确的获得误差值，所述木材下方的出料传输体的颜色被设置为与所述木材的颜色差别较大的颜色，如黑色、蓝色或者绿色等。当所述相机设置在所述木材运行路径的侧面时，所述相机隔着所述木材的位置处设置有背景板(黑色、蓝色或者绿色等)，从而使得相机拍摄的图像中木材与背景能够更容 易区分。本实用新型并不限制相机与所述木材运行路径的具体位置，本领域技术人员可以根据实际需要进行修改设计。
需要补充的是，优选锯的锯切，送料传输等，都是在毫秒级的响应，速度快。本实用新型中木材锯切校正装置的控制单元与优选锯的控制系统之间可以例如采用现有即时通讯协议进行数据传输，且误差值一般是几个毫米，所以优选锯在本身运动速度的前提下就能在毫秒级完成误差值的修正，几乎不降低优选锯本身速度。
本实用新型还提供一种优选锯，所述优选锯的出料端设置有如上所述的木材锯切校正装置。所述优选锯的控制系统根据所述木材锯切校正装置的检测信号对木材的位置进行修正。
在本实用新型中，木材锯切校正装置设置在优选锯的出料端，对木材规格长度进行再测量，之后把误差值(修正值)反馈给优选锯进行补偿并修正，从而提升精度；同时，木材锯切校正装置采用非接触位移测量单元进行测量，与木材无接触且无压力，无接触可实现非平面木材端面的测量准确，避免滚轮和接触式测量的偏差，无压力则避免了木材由于正常的弯曲变形所造成的偏差，保障了木材自然状态下的长度准确性。
下面结合具体示例对本实用新型的工作过程进行介绍。
在木材经过划线台100、测量站200被划线测量后，运行到优选锯主机300里进行定位锯切。
所述优选锯主机300将木材的一端端头移动需要的锯切长度(相对于锯口)的同时，同步带滑台的滑块带动所述相机也移动到此长度的位置(相对于锯口)，即所述一端端头所处的位置，换句话说，所述非接触位移测量单元420(相机)测量时(拍摄图像时)所处的位置与所述锯切长度对应，从而使得木材远离所述锯口310的一端位于所述非接触位移测量单元420的测量范围(所述相机的拍摄范围)内。
待所述优选锯进料和所述相机均定位完成后，所述相机进行拍照，所述检测计算单元根据所述相机拍摄的照片计算出所述误差值后将包含所述误差值的检测信号发送给所述控制单元，所述控制单元将所述检测信号传输至优选锯的控制系统，所述优选锯根据所述误差值控制木材移动该误差值以进行修正，修正完成后再进行锯切。
表1示出了安装了本实用新型木材锯切校正装置的优选锯与未安装本实用新型木材锯切校正装置的优选锯的锯切精度数据对比。
表1
Figure PCTCN2021105990-appb-000001
从表1可以看出，未安装木材锯切校正装置的优选锯在切割木材时误差值普遍较大，在切割2100mm长度的木材时有一次误差值甚至达到了3mm，而在安装木材锯切校正装置后，优选锯在切割木材时的误差值有所减小，20次切割试验中最大的误差值仅为-0.5mm。
综上所述，本实用新型在优选锯的出料端设置木材锯切校正装置，通过非接触位移测量单元获取木材运行的误差值后进行修正，完美的解决了木材加工精度不高的问题，通过工厂大量测试，精度能够稳定提高到±0.5mm以内，让优选锯成为了加工速度快且精度高的设备。

Claims (10)

  1. 一种木材锯切校正装置，其特征在于，所述木材锯切校正装置包括检测单元和控制单元；所述检测单元包括驱动定位单元、设置在所述驱动定位单元上的非接触位移测量单元以及检测计算单元，所述检测计算单元被配置为根据所述非接触位移测量单元的测量结果计算木材运行锯切长度后的误差值，所述控制单元被配置为控制所述驱动定位单元带动所述非接触位移测量单元运动，接收所述检测单元的检测信号以及将所述检测信号传输至优选锯的控制系统；
    其中，所述木材锯切校正装置设置在所述优选锯的出料端，所述驱动定位单元带动所述非接触位移测量单元运动的运动方向与所述木材的运行路径平行。
  2. 如权利要求1所述的木材锯切校正装置，其特征在于，所述驱动定位单元为机械手臂、摇杆装置或者滑台。
  3. 如权利要求2所述的木材锯切校正装置，其特征在于，所述滑台为同步带滑台。
  4. 如权利要求3所述的木材锯切校正装置，其特征在于，所述同步带滑台的精度为0.1mm。
  5. 如权利要求1所述的木材锯切校正装置，其特征在于，所述非接触位移测量单元为位移传感器或者相机。
  6. 如权利要求5所述的木材锯切校正装置，其特征在于，所述相机的精度为0.019mm。
  7. 如权利要求1所述的木材锯切校正装置，其特征在于，所述驱动定位单元设置在所述木材的运行路径的侧面或者上方。
  8. 如权利要求7所述的木材锯切校正装置，其特征在于，所述非接触位移测量单元的初始位置与所述优选锯的锯口之间的距离为600mm以上。
  9. 如权利要求1所述的木材锯切校正装置，其特征在于，所述非接触位移测量单 元测量时所处的位置与所述锯切长度对应。
  10. 一种优选锯，其特征在于，所述优选锯的出料端设置有如权利要求1-9中任一项所述的木材锯切校正装置。
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