TWI534418B - Screw deformation detection device - Google Patents

Description

螺桿變形檢測裝置 Screw deformation detecting device

本發明是有關於一種檢測裝置，特別是指一種用於檢測螺桿變形量的螺桿變形檢測裝置。 The present invention relates to a detecting device, and more particularly to a screw deformation detecting device for detecting a deformation amount of a screw.

參閱圖1，線性裝置1通常包含一支長向設置的螺桿11、兩條分別位於該螺桿11兩側的滑軌12，及一個螺接於該螺桿11且可滑動地嵌裝於該等滑軌12的載台13。該載台13可供一個負載(圖未示)安裝設置，而可帶動該負載進行線性移動。正常使用時，該等滑軌12與該螺桿11的軸線相互平行，並藉由該螺桿11之轉動來能傳動該載台13沿著該等滑軌12滑動，然而當該等滑軌12與該螺桿11的軸線方向不平行時，該載台13會被該等滑軌12側向牽引，而會施加側向的力F於該螺桿11，使該螺桿11些微變形，而易磨耗損壞，若該等滑軌12與該螺桿11間的不平行度太大，甚至還會導致該螺桿11嚴重彎曲，使該線性裝置1產生過載問題。 Referring to Figure 1, the linear device 1 generally includes a long-arranged screw 11, two slide rails 12 respectively located on opposite sides of the screw 11, and a screwed to the screw 11 and slidably fitted to the slide The stage 13 of the rail 12. The stage 13 can be installed in a load (not shown) to drive the load for linear movement. In normal use, the slide rails 12 and the axis of the screw 11 are parallel to each other, and the rotation of the screw 11 can drive the stage 13 to slide along the slide rails 12, however, when the slide rails 12 are When the axial direction of the screw 11 is not parallel, the stage 13 is pulled laterally by the slide rails 12, and a lateral force F is applied to the screw 11, so that the screw 11 is slightly deformed and easily worn and damaged. If the degree of non-parallelism between the slide rails 12 and the screw 11 is too large, the screw 11 may be severely bent, causing the linear device 1 to have an overload problem.

習知常利用滑動百分表或千分表來量測該螺桿11的因受力而產生的變形量，以了解該螺桿11的受力情況，但利用此種方法必須是在該線性裝置1安裝該負載 前，或是將該載台13上的該負載拆卸下來，甚至還需拆卸該載台13才得以進行量測，因此在使用上極為不方便。 Conventionally, a sliding dial gauge or a dial gauge is used to measure the amount of deformation of the screw 11 due to the force, so as to understand the force of the screw 11, but the method must be used in the linear device 1 Install the load In the past, the load on the stage 13 is removed, and even the stage 13 needs to be disassembled for measurement, so that it is extremely inconvenient to use.

因此，本發明之目的，即在提供一種便於檢測螺桿變形量的螺桿變形檢測裝置。 Accordingly, it is an object of the present invention to provide a screw deformation detecting device that facilitates detecting the amount of deformation of a screw.

於是，本發明螺桿變形檢測裝置，適用於檢測一個線性裝置。該線性裝置包含一支螺桿、兩條分別位於該螺桿兩側的滑軌，及一個螺接於該螺桿且可滑動地嵌裝於該等滑軌的載台。該螺桿具有相反的一個第一端部與一個第二端部，並可傳動該載台沿著該等滑軌位移。該螺桿變形檢測裝置包含至少一個第一應變規，及一個處理單元。 Thus, the screw deformation detecting device of the present invention is suitable for detecting a linear device. The linear device comprises a screw, two slide rails respectively located on two sides of the screw, and a loading platform screwed to the screw and slidably fitted to the slide rails. The screw has an opposite first end and a second end and is adapted to displace the stage along the rails. The screw deformation detecting device includes at least one first strain gauge, and a processing unit.

該第一應變規黏貼於該螺桿之該第一端部周面，並可隨該第一端部的變形而形變並改變電阻值。該處理單元訊號連接該第一應變規，並包括一個第一量測模組，及一個計算模組。在該載台移至特定位置時，該第一量測模組可被驅動而分別量測一次該第一應變規的電阻變化量。該計算模組可根據該第一量測模組所量測到的電阻變化量，計算出一個代表該第一端部產生變形的第一變形量。 The first strain gauge is adhered to the first end peripheral surface of the screw, and can be deformed according to the deformation of the first end portion and change the resistance value. The processing unit signal is coupled to the first strain gauge and includes a first measurement module and a calculation module. When the stage is moved to a specific position, the first measurement module can be driven to measure the resistance change amount of the first strain gauge once. The calculation module calculates a first deformation amount representing the deformation of the first end portion according to the resistance change amount measured by the first measurement module.

2‧‧‧線性裝置 2‧‧‧Linear device

21‧‧‧螺桿 21‧‧‧ screw

211‧‧‧第一端部 211‧‧‧ first end

212‧‧‧第二端部 212‧‧‧second end

213‧‧‧量測點 213‧‧‧Measurement points

22‧‧‧滑軌 22‧‧‧Slide rails

23‧‧‧載台 23‧‧‧The stage

24‧‧‧馬達 24‧‧‧Motor

3‧‧‧第一應變規 3‧‧‧First strain gauge

4‧‧‧第二應變規 4‧‧‧Second strain gauge

5‧‧‧處理單元 5‧‧‧Processing unit

51‧‧‧第一量測模組 51‧‧‧First measurement module

52‧‧‧第二量測模組 52‧‧‧Second measurement module

53‧‧‧計算模組 53‧‧‧Computation Module

本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一個俯視圖，說明習知的一個線性裝置； 圖2是一個部分俯視圖，說明本發明螺桿變形檢測裝置之一個實施例與一個線性裝置；圖3是一個部分前視圖，說明該實施例與該線性裝置；及圖4是一個功能方塊圖，說明該實施例之系統架構。 Other features and advantages of the present invention will be apparent from the embodiments of the drawings, wherein: Figure 1 is a plan view illustrating a conventional linear device; Figure 2 is a partial plan view showing an embodiment of the screw deformation detecting device of the present invention and a linear device; Figure 3 is a partial front elevational view showing the embodiment and the linear device; and Figure 4 is a functional block diagram illustrating The system architecture of this embodiment.

在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

參閱圖2、圖3與圖4，本發明螺桿變形檢測裝置之一個實施例，適用於偵測一個線性裝置2。該線性裝置2包含一支左右長向設置的螺桿21、兩條分別位於該螺桿21前側與後側的滑軌22、一個螺接於該螺桿21且可滑動地安裝於該等滑軌22的載台23，及一個馬達24。該螺桿21具有左右相反的一個第一端部211與一個第二端部212，及數個沿該螺桿21間隔排列的量測點213。該載台23可供一個負載(圖未示)安裝設置，並可帶動該負載進行線性移動。為了能達到較佳的量測結果，本實施例的該螺桿21具有20個量測點213，但實施時量測點213的數量不以此為限，但位於最左方與最右方的量測點213必須分別鄰近於該螺桿21兩端。該馬達24可驅動該螺桿21轉動而傳動該載台23沿著該等滑軌22之長向位移至該等量測點213。 Referring to Figures 2, 3 and 4, an embodiment of the screw deformation detecting device of the present invention is suitable for detecting a linear device 2. The linear device 2 includes a screw 21 disposed longitudinally on the left and right sides, two slide rails 22 respectively located on the front side and the rear side of the screw 21, and a screw threaded on the screw 21 and slidably mounted on the slide rails 22 The stage 23 and a motor 24 are provided. The screw 21 has a first end portion 211 and a second end portion 212 opposite to each other, and a plurality of measuring points 213 spaced along the screw 21. The stage 23 can be installed in a load (not shown) and can drive the load to move linearly. In order to achieve a better measurement result, the screw 21 of the embodiment has 20 measuring points 213, but the number of measuring points 213 is not limited thereto, but is located at the leftmost and rightmost sides. The measuring points 213 must be adjacent to both ends of the screw 21, respectively. The motor 24 can drive the screw 21 to rotate to drive the stage 23 to be displaced along the length of the slide rails 22 to the equal measuring points 213.

該螺桿變形檢測裝置包含四個第一應變規3、四個第二應變規4，及一個處理單元5。 The screw deformation detecting device includes four first strain gauges 3, four second strain gauges 4, and one processing unit 5.

該等第一應變規3沿該螺桿21之長向延伸，並繞著該螺桿21軸心呈等角度相間隔分佈，而分別黏貼於該第一端部211周面，在本實施例中，該等第一應變規3分別位於該第一端部211的頂側、底側、前側與後側，但不以上述為限。位於前側與後側的該等第一應變規3可分別隨著該第一端部211在水平方向的變形而形變，並改變電阻值，而位於頂側與底側的該等第一應變規3可分別隨著該第一端部211在垂直於水平方向的變形而形變，並改變電阻值。 The first strain gauges 3 extend along the longitudinal direction of the screw 21 and are equally spaced around the axis of the screw 21, and are respectively adhered to the circumferential surface of the first end portion 211. In this embodiment, The first strain gauges 3 are respectively located on the top side, the bottom side, the front side, and the back side of the first end portion 211, but are not limited thereto. The first strain gauges 3 located on the front side and the back side may be deformed respectively according to the deformation of the first end portion 211 in the horizontal direction, and the resistance values are changed, and the first strain gauges located on the top side and the bottom side are respectively 3 may be deformed as the first end portion 211 is deformed perpendicular to the horizontal direction, and the resistance value is changed.

該等第二應變規4沿該螺桿21之長向延伸，並繞著該螺桿21軸心呈等角度相間隔分佈，分別與該等第一應變規3相對應地黏貼於該第二端部212周面。在本實施例中，該等第二應變規4分別與該等第一應變規3相對應地設置於該第二端部212的頂側、底側、前側與後側，但不以上述為限。位於前側與後側的該等第二應變規4可分別隨著該第二端部212在水平方向的變形而形變，並改變電阻值，而位於頂側與底側的該等第二應變規4可分別隨著該第二端部212在垂直於水平方向的變形而形變，並改變電阻值。 The second strain gauges 4 extend along the longitudinal direction of the screw 21 and are equally spaced around the axis of the screw 21, and are respectively adhered to the second end portion corresponding to the first strain gauges 3, respectively. 212 weeks. In this embodiment, the second strain gauges 4 are respectively disposed on the top side, the bottom side, the front side, and the back side of the second end portion 212 corresponding to the first strain gauges 3, but not in the above limit. The second strain gauges 4 located on the front side and the rear side may be deformed respectively according to the deformation of the second end portion 212 in the horizontal direction, and the resistance values are changed, and the second strain gauges located on the top side and the bottom side are respectively 4 may be deformed as the second end portion 212 is deformed perpendicular to the horizontal direction, and the resistance value is changed.

在本實施例的該等第一、第二應變規3、4可藉由形變而改變電阻值，但實施上亦可使用其他能藉由形變而產生電流或電壓的壓電材料，由於類型眾多且為習知技術並非本發明之重點，故在此不再詳述。 In the first and second strain gauges 3 and 4 of the embodiment, the resistance value can be changed by deformation, but other piezoelectric materials capable of generating current or voltage by deformation can be used in practice, due to various types. Moreover, the prior art is not the focus of the present invention and therefore will not be described in detail herein.

該處理單元5訊號連接該等第一應變規3與該 等第二應變規4，並包括一個第一量測模組51、一個第二量測模組52，及一個計算模組53。 The processing unit 5 signals the first strain gauges 3 and the The second strain gauge 4 includes a first measurement module 51, a second measurement module 52, and a calculation module 53.

該第一量測模組51可在該載台23位於每一個量測點213時被驅動，而量測一次該等第一應變規3的電阻變化量。該第二量測模組52可在該載台23位於每一個量測點213時被驅動，而量測一次該等第二應變規4的電阻變化量。需要說明的是，當該載台23位於每一個量測點213時，該等第一、第二應變規3、4會定位於該螺桿21的頂側、底側、前側與後側且分別位於固定位置，以正確偵測該第一、第二端部211、212在水平方向與垂直於水平方向的變形量，並供該第一、第二量測模組51、52量測。但實施上該第一、第二應變規3、4亦可一起設置於該螺桿21之特定四側，以偵測該第一、第二端部211、212沿該特定四側的變形量，不以本實施例為限。 The first measurement module 51 can be driven when the stage 23 is located at each measurement point 213, and the resistance change amount of the first strain gauges 3 is measured once. The second measurement module 52 can be driven when the stage 23 is located at each measurement point 213, and the resistance change amount of the second strain gauges 4 is measured once. It should be noted that when the stage 23 is located at each measuring point 213, the first and second strain gauges 3, 4 are positioned on the top side, the bottom side, the front side and the back side of the screw 21 and respectively The first and second end portions 211 and 212 are correctly detected in the horizontal direction and perpendicular to the horizontal direction, and are measured by the first and second measurement modules 51 and 52. However, the first and second strain gauges 3 and 4 may be disposed on the specific four sides of the screw 21 to detect the deformation amount of the first and second end portions 211 and 212 along the specific four sides. It is not limited to this embodiment.

該計算模組53可根據該第一量測模組51於該等第一應變規3所量測到的該等電阻變化量，計算出四個第一變形量，並根據該等第二量測模組52於該等第二應變規4所量測到的該等電阻變化量，計算出四個第二變形量。該等第一變形量為該螺桿21因為側向受力，而在該第一端部211之頂側、底側、前側與後側所產生的變形量。該等第二變形量為該螺桿21因為側向受力，而在該第二端部212之頂側、底側、前側與後側所產生的變形量。 The calculation module 53 can calculate four first deformation amounts according to the resistance change amounts measured by the first measurement module 51 on the first strain gauges 3, and according to the second quantities The second change amount is calculated by the measurement module 52 measuring the resistance change amount measured by the second strain gauges 4. The first amount of deformation is the amount of deformation of the screw 21 caused by the lateral force on the top side, the bottom side, the front side, and the rear side of the first end portion 211. The second amount of deformation is the amount of deformation of the screw 21 due to the lateral force on the top side, the bottom side, the front side, and the back side of the second end portion 212.

本發明螺桿變形檢測裝置使用時，先將該載台23移動至該螺桿21最右方的第一個量測點213，且該等第 一、第二應變規3、4會定位於該螺桿21的頂側、底側、前側與後側且分別位於固定位置，並觸發該第一、第二量測模組51、52量測一次該等第一、第二應變規3、4的電阻變化量，再透過該計算模組53計算出第一組的該等第一變形量與該等第二變形量。此時，操作者可了解該載台23在第一個量測點213時，該螺桿21的受力情況。 When the screw deformation detecting device of the present invention is used, the stage 23 is first moved to the first measuring point 213 at the rightmost side of the screw 21, and the same First, the second strain gauges 3, 4 are positioned on the top side, the bottom side, the front side and the back side of the screw 21 and are respectively located at fixed positions, and trigger the first and second measurement modules 51, 52 to measure once. The resistance change amounts of the first and second strain gauges 3 and 4 are further calculated by the calculation module 53 to calculate the first deformation amount and the second deformation amount of the first group. At this time, the operator can know the force of the screw 21 when the stage 23 is at the first measuring point 213.

接著，操作者再啟動該馬達24驅動該螺桿21轉動，而傳動該載台23往左移動，當移動至第二個量測點213時，該等第一、第二應變規3、4也會定位於該螺桿21的頂側、底側、前側與後側且分別位於固定位置，並觸發該第一、第二量測模組51、52再次量測一次該等第一、第二應變規3、4的電阻變化量，並計算出第二組的該等第一變形量與該等第二變形量。此時，操作者可了解該載台23在第二個量測點213時，該螺桿21的受力情況。 Then, the operator restarts the motor 24 to drive the screw 21 to rotate, and the carrier 23 is moved to the left. When moving to the second measuring point 213, the first and second strain gauges 3 and 4 are also Positioned on the top side, the bottom side, the front side, and the back side of the screw 21 and respectively located at a fixed position, and triggering the first and second measurement modules 51, 52 to measure the first and second strains again. The resistance change amount of the gauges 3 and 4, and the first deformation amount of the second group and the second deformation amount are calculated. At this time, the operator can know the force of the screw 21 when the stage 23 is at the second measuring point 213.

依此類推，直到完成的所有量測點213的量測，如此一來操作者可測得該載台23位於每一個量測點213時，該螺桿21受力而在第一、第二端部211、212之四側所產生變形的該等第一變形量與該等第二變形量，藉此了解在該載台23移動過程中該螺桿21的受力情況。 And so on, until the measurement of all the measurement points 213 is completed, so that the operator can measure that the stage 23 is located at each measurement point 213, the screw 21 is forced to be at the first and second ends. The first deformation amount of the deformation of the four sides of the portions 211, 212 and the second deformation amount, thereby understanding the force of the screw 21 during the movement of the stage 23.

而本實施例設置該等第一、第二應變規3、4於該螺桿21兩端，是為了達到較高的檢測精準度，但實施上也可僅設置該等第一應變規3於該螺桿21一端，或是設計成只量測該螺桿21在水平方向的變形量，而僅分別設置單一個該第一應變規3與單一個該第二應變規4於該螺桿21 之兩端的前側或後側，甚至僅設置單一個該第一應變規3於該螺桿21之一端的前側或後側即可，不以本實施例為限。 In this embodiment, the first and second strain gauges 3 and 4 are disposed at the two ends of the screw 21 in order to achieve high detection accuracy, but the first strain gauge 3 may be disposed only in the implementation. One end of the screw 21 is designed to measure only the amount of deformation of the screw 21 in the horizontal direction, and only a single one of the first strain gauge 3 and a single one of the second strain gauges 4 are respectively disposed on the screw 21 The front side or the rear side of the two ends may be even provided with a single one of the first strain gauges 3 on the front side or the rear side of one end of the screw 21, which is not limited to the embodiment.

綜上所述本發明螺桿變形檢測裝置，透過該載台23在移動過程中多次量測且計算該等第一、第二應變規3、4的電阻變化量，並藉由計算結果了解在該載台23移動過程中該螺桿21在水平方向與垂直於水平方向的受力情況。如此一來，可在不拆卸該載台23上之該負載的情況下進行檢測，以提升螺桿21變形檢測的方便性，故確實能達成本發明之目的。 In summary, the screw deformation detecting device of the present invention measures the resistance change of the first and second strain gauges 3 and 4 a plurality of times during the movement through the stage 23, and understands the calculation result by the calculation result. The force of the screw 21 in the horizontal direction and the direction perpendicular to the horizontal direction during the movement of the stage 23 is performed. In this way, the detection can be performed without disassembling the load on the stage 23, so that the convenience of detecting the deformation of the screw 21 can be improved, and the object of the present invention can be achieved.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above is only the embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification of the present invention are still It is within the scope of the patent of the present invention.

2‧‧‧線性裝置 2‧‧‧Linear device

21‧‧‧螺桿 21‧‧‧ screw

211‧‧‧第一端部 211‧‧‧ first end

212‧‧‧第二端部 212‧‧‧second end

213‧‧‧量測點 213‧‧‧Measurement points

22‧‧‧滑軌 22‧‧‧Slide rails

23‧‧‧載台 23‧‧‧The stage

24‧‧‧馬達 24‧‧‧Motor

3‧‧‧第一應變規 3‧‧‧First strain gauge

4‧‧‧第二應變規 4‧‧‧Second strain gauge

Claims (1)

一種螺桿變形檢測裝置，適用於檢測一個線性裝置，該線性裝置包含一支螺桿、兩條分別位於該螺桿兩側的滑軌，及一個螺接於該螺桿且可滑動地嵌裝於該等滑軌的載台，該螺桿具有相反的一個第一端部與一個第二端部，並可傳動該載台沿著該等滑軌位移，該螺桿變形檢測裝置包含：四個第一應變規，繞著該螺桿軸心呈等角度相間隔分佈，而分別沿該螺桿之長向延伸地黏貼於該第一端部周面之特定四側，並可分別隨該第一端部的變形而形變並改變電阻值；四個第二應變規，繞著該螺桿軸心呈等角度相間隔分佈，而分別沿該螺桿之長向延伸地黏貼於該第二端部周面之特定四側，並可分別隨該第二端部的變形而形變並改變電阻值；及一個處理單元，訊號連接該等第一應變規與該等第二應變規，並包括一個第一量測模組、一個第二量測模組，及一個計算模組，該螺桿還具有數個沿長向間隔排列的量測點，在該載台移至每一個量測點時，該等第一應變規位於該螺桿之特定四側，該第一量測模組可被驅動而量測一次該等第一應變規的電阻變化量，且該等第二應變規分別位於該螺桿之特定四側，該第二量測模組可被驅動而量測一次該等第二應變規的電阻變化量，該計算模組可根據該等第一量測模組所量測到的 電阻變化量，計算出四個分別代表該第一端部之特定四側產生變形的第一變形量，該計算模組可根據該等第二量測模組所量測到的該等電阻變化量，計算出四個分別代表該第二端部之特定四側產生變形的第二變形量。 A screw deformation detecting device is suitable for detecting a linear device, wherein the linear device comprises a screw, two sliding rails respectively located on two sides of the screw, and a screw is screwed to the screw and slidably embedded in the sliding a loading platform of the rail, the screw has an opposite first end portion and a second end portion, and the carrier is driven to be displaced along the sliding rails, the screw deformation detecting device comprises: four first strain gauges, Arranged at equal angles around the axis of the screw, and respectively adhered to the specific four sides of the circumferential surface of the first end along the long axis of the screw, and can be deformed respectively according to the deformation of the first end portion And changing the resistance value; the four second strain gauges are equally spaced around the axis of the screw, and are respectively adhered to the specific four sides of the circumferential surface of the second end along the long direction of the screw, and The deformation may be respectively changed along with the deformation of the second end portion; and a processing unit, the signal is connected to the first strain gauge and the second strain gauge, and includes a first measurement module, a first Two measurement modules, and one calculation The screw further has a plurality of measuring points arranged along a long interval, and when the stage is moved to each measuring point, the first strain gauges are located on a specific four sides of the screw, the first measurement The module can be driven to measure the resistance change amount of the first strain gauges, and the second strain gauges are respectively located on specific four sides of the screw, and the second measurement module can be driven to measure once. The amount of resistance change of the second strain gauges, the calculation module is measurable according to the first measurement modules The amount of change in resistance is calculated as four first deformation amounts respectively representing deformations of the specific four sides of the first end portion, and the calculation module can detect the resistance changes according to the second measurement modules. For the amount, four second deformation amounts respectively representing the deformation of the specific four sides of the second end are calculated.