TWI823664B - Production method of automated bamboo cups - Google Patents
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- TWI823664B TWI823664B TW111142119A TW111142119A TWI823664B TW I823664 B TWI823664 B TW I823664B TW 111142119 A TW111142119 A TW 111142119A TW 111142119 A TW111142119 A TW 111142119A TW I823664 B TWI823664 B TW I823664B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 78
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 78
- 241001330002 Bambuseae Species 0.000 title claims abstract description 78
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 78
- 239000011425 bamboo Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 58
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 36
- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 238000005498 polishing Methods 0.000 description 6
- 230000002950 deficient Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
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Abstract
本發明係包括準備步驟、量測步驟、外表面輪廓量測步驟、厚度量測步驟、設定切削路徑步驟及進行切削加工步驟。復依前述步驟，對一待加工竹杯進行夾持、轉動、外表面輪廓量測及厚度量測，進而分別取得外表面輪廓值及厚度值。再依外表面輪廓值及厚度值設定至少一切削路徑，並可預測切削路徑產生之成品的優劣。接著，即可依選擇之切削路徑進行切削加工，最後完成一成品竹杯，然後結束。本案兼具以外表面輪廓值及厚度值設定切削路徑大幅提高良率，及自動化切削大幅減少成本等優點。 The invention includes a preparation step, a measuring step, an outer surface profile measuring step, a thickness measuring step, a cutting path setting step and a cutting processing step. Repeat the above steps to clamp, rotate, measure the outer surface profile and measure the thickness of a bamboo cup to be processed, and then obtain the outer surface profile value and thickness value respectively. Then at least one cutting path is set according to the outer surface contour value and thickness value, and the quality of the finished product produced by the cutting path can be predicted. Then, you can perform cutting processing according to the selected cutting path, and finally complete a finished bamboo cup, and then end. This case has the advantages of greatly improving the yield rate by setting the cutting path with external surface contour values and thickness values, and greatly reducing costs through automated cutting.
Description
本發明係有關一種自動化竹杯之生產方法，尤指一種兼具以外表面輪廓值及厚度值設定切削路徑大幅提高良率，及自動化切削大幅減少成本之自動化竹杯之生產方法。 The present invention relates to an automated bamboo cup production method, and in particular, to an automated bamboo cup production method that can significantly increase the yield rate by setting the cutting path with external surface contour values and thickness values, and significantly reduce costs through automated cutting.
現今市面上的竹杯，原則上都是以人工使用電動工具對待加工之竹件進行打磨加工而成。進而產生下列缺點： In principle, the bamboo cups on the market today are all made by manually polishing the bamboo parts to be processed using power tools. This results in the following shortcomings:
[1]人工成本過高。每個竹杯都是一個加工者以電動工具對竹件進行加工打磨而成，換言之，上百、上千個竹杯便須要上百、上千個加工人次。故，人工成本過高。 [1] Labor costs are too high. Each bamboo cup is made by a processor who uses electric tools to process and polish bamboo parts. In other words, hundreds or thousands of bamboo cups require hundreds or thousands of processing people. Therefore, labor costs are too high.
[2]成品良率差。天然竹件並非直筒狀，實際上其外表面與內表面均為不規則表面(微觀之內外徑的真圓度不一)，進而造成打磨過程中，易因人工參差不齊無法準確判斷竹件之厚薄，以致打磨破損，或是為防止打磨過度而造成竹杯打磨不如預期設計(亦為成品不良)。故，成品良率差。 [2] The finished product yield is poor. Natural bamboo parts are not straight-cylindrical. In fact, their outer and inner surfaces are irregular surfaces (the true roundness of the inner and outer diameter is different at the micro level), which makes it difficult to accurately judge the bamboo parts due to manual unevenness during the polishing process. The thickness may cause damage due to polishing, or to prevent excessive polishing, which may cause the bamboo cup to not be polished as expected (also a defective finished product). Therefore, the finished product yield is poor.
[3]成品不良造成使用時不易就口。當因人工無法判別竹件之內外徑的厚薄、以致打磨後形成杯口厚薄度不一時，便可能在使用上造成怪異口感，因而不易就口，造成使用意願低。故，成品不良造成使用時不易就口。 [3] The poor quality of the finished product makes it difficult to eat when using it. When the thickness of the inner and outer diameters of bamboo parts cannot be judged manually, resulting in uneven thickness of the cup opening after polishing, it may cause a strange taste during use, making it difficult to eat, resulting in low willingness to use. Therefore, a defective finished product makes it difficult to eat when using it.
有鑑於此，必須研發出可解決上述習用缺點之技術。 In view of this, it is necessary to develop technology that can solve the above conventional shortcomings.
本發明之目的，在於提供一種自動化竹杯之生產方法，其兼具以外表面輪廓值及厚度值設定切削路徑大幅提高良率，及自動化切削大幅減少成本等優點 。特別是，本發明所欲解決之問題係在於人工成本過高、成品良率差，及成品不良造成使用時不易就口等問題。 The purpose of the present invention is to provide an automated bamboo cup production method, which has the advantages of greatly improving the yield rate by setting the cutting path with the outer surface contour value and thickness value, and greatly reducing the cost through automated cutting. . In particular, the problems that the present invention aims to solve are problems such as excessive labor costs, poor finished product yields, and poor finished products that make it difficult to eat during use.
解決上述問題之技術手段係提供一種自動化竹杯之生產方法，其包括：一、準備步驟；二、量測步驟：外表面輪廓量測步驟；及厚度量測步驟；三、設定切削路徑步驟；及四、進行切削加工步驟。 The technical means to solve the above problems is to provide an automated bamboo cup production method, which includes: 1. Preparation step; 2. Measurement step: outer surface contour measurement step; and thickness measurement step; 3. Setting cutting path step; and 4. Carry out cutting processing steps.
本發明之上述目的與優點，不難從下述所選用實施例之詳細說明與附圖中，獲得深入瞭解。 The above objects and advantages of the present invention can be easily understood from the following detailed description of selected embodiments and the accompanying drawings.
茲以下列實施例並配合圖式詳細說明本發明於後： The present invention is described in detail below with the following examples and drawings:
10:機台 10:Machine
11:X軸滑動座 11:X-axis sliding seat
12:Y軸滑動座 12: Y-axis sliding seat
20:旋轉夾頭 20: Rotating chuck
30:竹杯輪廓量測組件 30: Bamboo cup contour measurement component
31:伸縮量測單元 31: Telescopic measurement unit
40:切削加工組件 40:Cutting components
50:頂針組件 50:Ejection pin assembly
60:量測工具 60:Measurement tools
91:待加工竹杯 91: Bamboo cup to be processed
92:成品竹杯 92: Finished bamboo cup
S1:準備步驟 S1: Preparatory steps
S2:量測步驟 S2: Measurement steps
S21:外表面輪廓量測步驟 S21: Outer surface profile measurement steps
S22:厚度量測步驟 S22: Thickness measurement steps
S3:設定切削路徑步驟 S3: Steps to set cutting path
S4:進行切削加工步驟 S4: Carry out cutting processing steps
D:厚度值 D:Thickness value
L1:階級路徑 L1: Level path
L2:直線路徑 L2: straight path
L3:波浪路徑 L3: wave path
第1圖係本發明之生產方法之流程圖。 Figure 1 is a flow chart of the production method of the present invention.
第2圖係第1圖之生產裝置之示意圖。 Figure 2 is a schematic diagram of the production equipment of Figure 1.
第3圖係第2圖之部分裝置之示意圖。 Figure 3 is a schematic diagram of part of the device in Figure 2.
第4圖係第2圖之夾持應用例之其他角度之示意圖。 Figure 4 is a schematic diagram of the clamping application example in Figure 2 from other angles.
第5圖係本發明之外表面輪廓量測過程之一之示意圖。 Figure 5 is a schematic diagram of one of the external surface profile measurement processes of the present invention.
第6圖係本發明之外表面輪廓量測過程之二之示意圖。 Figure 6 is a schematic diagram of the second part of the external surface profile measurement process of the present invention.
第7圖係本發明之外表面輪廓量測過程之三之示意圖。 Figure 7 is a schematic diagram of the third process of measuring the outer surface profile of the present invention.
第8圖係本發明之厚度量測之示意圖。 Figure 8 is a schematic diagram of thickness measurement of the present invention.
第9圖係本發明之設定切削路徑之示意圖。 Figure 9 is a schematic diagram of setting the cutting path of the present invention.
第10圖係本發明之進行切削加工之示意圖。 Figure 10 is a schematic diagram of cutting processing according to the present invention.
第11圖係本發明之成品竹杯之示意圖。 Figure 11 is a schematic diagram of the finished bamboo cup of the present invention.
第A圖係本發明之外表面輪廓量測之實體照片。 Figure A is a physical photo of the external surface profile measurement of the present invention.
第B圖係本發明之外表面輪廓量測之人機介面之參考圖。 Figure B is a reference diagram of the human-machine interface for external surface profile measurement of the present invention.
第C圖係本發明之設定第一種切削路徑之人機介面之參考圖。 Figure C is a reference diagram of the human-machine interface for setting the first cutting path of the present invention.
第D圖係第C圖之切削路徑之切削後之成品之參考照片(照片有兩個成品，用來舉例說明，實際上只會有一個成品！)。 Picture D is a reference photo of the finished product after cutting along the cutting path of Picture C (the photo shows two finished products, used as an example, there is actually only one finished product!).
第E圖係本發明之設定第二種切削路徑之人機介面之參考圖。 Figure E is a reference diagram of the human-machine interface for setting the second cutting path of the present invention.
第F圖係第E圖之切削路徑(厚度值不足)之切削後產生不良品之實體照片。 Picture F is a physical photo of defective products produced after cutting along the cutting path (insufficient thickness value) in Picture E.
參閱第1、第2、第3、第4、第5及第6圖，本發明係為一種自動化竹杯之生產方法，其包括： Referring to Figures 1, 2, 3, 4, 5 and 6, the present invention is an automated bamboo cup production method, which includes:
一、準備步驟S1：準備一自動化竹杯生產裝置，其係包括一機台10、一旋轉夾頭20、一竹杯輪廓量測組件30及一切削加工組件40；其中，該機台10係具有一X軸滑動座11及一Y軸滑動座12；該X軸滑動座11係可沿該機台10之X軸，與該機台10相對往復滑動；該Y軸滑動座12係設於該X軸滑動座11上，並可沿該機台10之Y軸，而與該X軸滑動座11相對往復滑動。該旋轉夾頭20係設於該機台10上，並與該機台10之X軸同軸。該竹杯輪廓量測組件30係沿該機台10之Y軸，設於該Y軸滑動座12上；且該竹杯輪廓量測組件30係設一對伸縮量測單元31，該對伸縮量測單元31互呈平行且彼此間隔開。該切削加工組件40係沿該機台10之X軸，設於該Y軸滑動座12上。 1. Preparation step S1: Prepare an automated bamboo cup production device, which includes a machine 10, a rotating chuck 20, a bamboo cup profile measurement component 30 and a cutting processing component 40; wherein, the machine 10 is It has an X-axis sliding seat 11 and a Y-axis sliding seat 12; the X-axis sliding seat 11 can slide back and forth relative to the machine 10 along the X-axis of the machine 10; the Y-axis sliding seat 12 is located on The X-axis sliding seat 11 can slide back and forth relative to the X-axis sliding seat 11 along the Y-axis of the machine 10 . The rotating chuck 20 is disposed on the machine 10 and is coaxial with the X-axis of the machine 10 . The bamboo cup contour measuring component 30 is disposed on the Y-axis sliding seat 12 along the Y-axis of the machine 10; and the bamboo cup contour measuring component 30 is provided with a pair of telescopic measuring units 31. The measuring units 31 are parallel to each other and spaced apart from each other. The cutting assembly 40 is disposed on the Y-axis sliding seat 12 along the X-axis of the machine table 10 .
二、量測步驟S2：此步驟再分別進行下列兩種量測： 2. Measurement step S2: In this step, the following two measurements are performed:
[A]外表面輪廓量測步驟S21：控制該旋轉夾頭20用以夾持一待加工竹杯91(如第4圖所示)，並傳動該待加工竹杯91與該機台10之X軸同軸轉動，透過該X軸滑動座11及該Y軸滑動座12，連動該對伸縮量測單元31分別對該待加 工竹杯91之外表面，進行至少轉動一圈(360度)之接觸量測(參閱第7圖，以及附件第A及第B圖)，而分別取得該待加工竹杯91之一外表面輪廓值。 [A] Outer surface profile measurement step S21: Control the rotating chuck 20 to clamp a bamboo cup 91 to be processed (as shown in Figure 4), and drive the bamboo cup 91 to be processed and the machine 10 The X-axis rotates coaxially, and through the X-axis sliding seat 11 and the Y-axis sliding seat 12, the pair of telescopic measuring units 31 are linked to the measuring units to be measured respectively. The outer surface of the bamboo cup 91 is rotated at least once (360 degrees) for contact measurement (see Figure 7, and Figures A and B in the attachment), and one outer surface of the bamboo cup 91 to be processed is obtained. Contour value.
[B]厚度量測步驟S22：參閱第8圖，對該待加工竹杯91進行厚度量測而取得一厚度值D。 [B] Thickness measurement step S22: Refer to Figure 8 to measure the thickness of the bamboo cup 91 to be processed to obtain a thickness value D.
三、設定切削路徑步驟S3：依前述該待加工竹杯91之該外表面輪廓值及該厚度值D，設定至少一切削路徑(參閱第9圖，例如可為一階級路徑L1、一直線路徑L2、一波浪路徑L3其中一者，亦可參考附件第B、第C或是第E圖)。 3. Setting the cutting path Step S3: Set at least one cutting path according to the outer surface contour value and the thickness value D of the bamboo cup 91 to be processed (see Figure 9, for example, it can be a one-level path L1, a linear path L2 , one of the wave paths L3, please also refer to Figures B, C or E in the attachment).
四、進行切削加工步驟S4：依選擇之該至少一切削路徑，控制該切削加工組件40對該待加工竹杯91執行切削加工(參考第10圖)，最後完成一成品竹杯92(如第11圖及附件第D圖所示)；然後結束。 4. Carry out cutting processing step S4: According to the selected at least one cutting path, control the cutting processing component 40 to perform cutting processing on the bamboo cup 91 to be processed (refer to Figure 10), and finally complete a finished bamboo cup 92 (as shown in Figure 10). 11 and Figure D in the attachment); and then end.
實務上，該對伸縮量測單元31，可為線性可變差動變壓器(Linear Variable Differential Transformer，簡稱LVDT)，至少可用以量測相關物件之長度、…、及厚薄度。 In practice, the pair of telescopic measurement units 31 can be linear variable differential transformers (LVDTs for short), which can at least be used to measure the length,..., and thickness of related objects.
參閱第4圖，該自動化竹杯生產裝置可再包括： Referring to Figure 4, the automated bamboo cup production device can further include:
一頂針組件50，係設於該機台10上，並與該待加工竹杯91、該成品竹杯92其中至少一者同軸；該頂針組件50可用以抵住該待加工竹杯91、該成品竹杯92其中至少一者之未夾持端(亦即被該旋轉夾頭20夾住的另端)。 An ejector pin assembly 50 is installed on the machine platform 10 and is coaxial with at least one of the bamboo cup 91 to be processed and the finished bamboo cup 92; the ejector pin assembly 50 can be used to resist the bamboo cup 91 to be processed, the bamboo cup 91 to be processed, the bamboo cup 91 to be processed, and the finished bamboo cup 92. The unclamped end of at least one of the finished bamboo cups 92 (that is, the other end clamped by the rotating chuck 20).
一量測工具60，係用以量測該待加工竹杯91之該厚度值D。 A measuring tool 60 is used to measure the thickness value D of the bamboo cup 91 to be processed.
該量測工具60可為游標測徑器(如第8圖所示)、直尺其中至少一者。 The measuring tool 60 may be at least one of a vernier caliper (as shown in Figure 8) and a ruler.
在此要特別說明的部分是，每根竹子乍看之下是直的，但是，實際上除可能略有弧度外，每個部位的"厚度"都可能有些微差異。本案針對前述問題，設計下列方法提高該成品竹杯92之良率： What needs to be noted here is that each piece of bamboo may appear straight at first glance, but in fact, except for a slight curvature, the "thickness" of each part may be slightly different. In this case, in view of the aforementioned problems, the following methods are designed to improve the yield rate of the finished bamboo cup 92:
[A]量測該待加工竹杯91之外表面輪廓值：參閱第5、第6及第7圖(以及附件第A圖)，先控制該X軸滑動座11於該機台10上，朝該待加工竹杯91的 方向移動，接著，一則控制該旋轉夾頭20傳動該待加工竹杯91(如第4圖所示)轉動，二則控制該Y軸滑動座12於該X軸滑動座11上，連動該對伸縮量測單元31朝該待加工竹杯91移動，並當接觸後至少相對轉動一圈，達成以接觸量測(參閱第7圖，以及附件第A及第B圖)取得該待加工竹杯91之外表面輪廓值。 [A] Measure the outer surface contour value of the bamboo cup 91 to be processed: Refer to Figures 5, 6 and 7 (and Figure A in the attachment), first control the X-axis sliding seat 11 on the machine 10, Towards the bamboo cup to be processed 91 direction movement, and then, one controls the rotating chuck 20 to drive the bamboo cup 91 to be processed (as shown in Figure 4) to rotate, and the other controls the Y-axis sliding seat 12 on the X-axis sliding seat 11 to link the pair of The telescopic measuring unit 31 moves towards the bamboo cup 91 to be processed, and rotates relatively at least once after contact, so as to obtain the bamboo cup to be processed through contact measurement (see Figure 7, and Figures A and B in the attachment). 91 external surface profile value.
而接觸量測過程中，該對伸縮量測單元31分別依該待加工竹杯91之外表面弧度之高低起伏，而可被推頂後縮或接觸前伸，唯伸縮過程均保持接觸量測之功效者。 During the contact measurement process, the pair of telescopic measurement units 31 can be pushed forward and retracted or contacted forward according to the ups and downs of the curvature of the outer surface of the bamboo cup 91 to be processed, but the contact measurement is maintained during the expansion and contraction process. The effect of it.
[B]量測該待加工竹杯91之厚度值D：此時可控制該旋轉夾頭20停止傳動該待加工竹杯91，以便透過該量測工具60取得該厚度值D(如第8圖所示)。 [B] Measure the thickness value D of the bamboo cup 91 to be processed: At this time, the rotating chuck 20 can be controlled to stop driving the bamboo cup 91 to be processed, so that the thickness value D can be obtained through the measuring tool 60 (as shown in Section 8 as shown in the figure).
進而以該待加工竹杯91之該外表面輪廓值及該厚度值D，設定出至少一切削路徑，首先，參閱第9圖(或是參考附件第B圖、第C圖或是第E圖)，假設該至少一切削路徑可為一階級路徑L1(附件第C及第E圖之選項A)、一直線路徑L2(附件第C及第E圖之選項B)、一波浪路徑L3(附件第C及第E圖之選項C)其中一者。 Then, use the outer surface contour value and the thickness value D of the bamboo cup 91 to be processed to set at least one cutting path. First, refer to Figure 9 (or refer to Figure B, Figure C or Figure E of the attachment) ), assuming that the at least one cutting path can be a hierarchical path L1 (Option A in Figures C and E of the Appendix), a linear path L2 (Option B in Figures C and E of the Appendix), and a wavy path L3 (Option B in Figures C and E of the Appendix) C and option C) in Figure E.
茲舉兩例說明如下： Here are two examples:
第一例：當(例如依成品需求)選擇該階級路徑L1(附件第C之選項A)時，可能被判別為加工後剩餘厚度為2.120mm，並可進行切削加工。切削加工後之該成品竹杯92具有極佳之良率(附件第D圖有兩個成品，用來舉例說明，實際上只會有一個成品)。 The first example: When the class path L1 (option A in Appendix C) is selected (for example, according to the requirements of the finished product), it may be determined that the remaining thickness after processing is 2.120mm, and cutting processing can be performed. The finished bamboo cup 92 after cutting processing has an excellent yield (there are two finished products in Figure D in the attachment, for example, in fact there will only be one finished product).
第二例：當選擇直線路徑L2(附件第E圖之選項B)時，可能被判別為加工後剩餘厚度為0.9100mm，結果是「竹杯剩餘壁厚不足」。不建議進行切削加工，若仍進行切削加工，則可能產生不良品(如附件第F圖所示，杯口破裂不齊，完全無法使用)。 Second example: When selecting linear path L2 (option B in Figure E of the attachment), it may be judged that the remaining thickness after processing is 0.9100mm, and the result is "insufficient remaining wall thickness of the bamboo cup". It is not recommended to perform cutting processing. If you still perform cutting processing, defective products may be produced (as shown in Figure F in the attachment, the cup mouth is cracked and uneven, completely unusable).
本發明之優點及功效可歸納如下： The advantages and effects of the present invention can be summarized as follows:
[1]以外表面輪廓值及厚度值設定切削路徑大幅提高良率。本發明對待加工竹杯預先量測外表面輪廓值及厚度值，進而得到切削路徑之選項，並可預測切削路徑產生之結果，如此可選擇較優之切削路徑而提高良率。故，以外表面輪廓值及厚度值設定切削路徑大幅提高良率。 [1] Setting the cutting path with external surface contour value and thickness value greatly improves the yield rate. The present invention pre-measures the outer surface contour value and thickness value of the bamboo cup to be processed, thereby obtaining cutting path options, and can predict the results of the cutting path, so that a better cutting path can be selected to improve the yield rate. Therefore, setting the cutting path based on the outer surface contour value and thickness value greatly improves the yield.
[2]自動化切削大幅減少成本。本發明從量測到切削，幾乎可為自動化生產線進行，除大幅減少人力打磨之人工成本外，亦革除因人工參差不齊而打磨出不良成品的損耗。故，自動化切削大幅減少成本。 [2] Automated cutting significantly reduces costs. The present invention can be carried out from measurement to cutting in an almost automated production line. In addition to significantly reducing the labor cost of manual polishing, it also eliminates the loss of defective finished products due to uneven manual polishing. Therefore, automated cutting significantly reduces costs.
以上僅是藉由較佳實施例詳細說明本發明，對於該實施例所做的任何簡單修改與變化，皆不脫離本發明之精神與範圍。 The above is only a detailed description of the present invention through preferred embodiments. Any simple modifications and changes made to the embodiments do not deviate from the spirit and scope of the present invention.
S1:準備步驟 S1: Preparatory steps
S2:量測步驟 S2: Measurement steps
S21:外表面輪廓量測步驟 S21: Outer surface profile measurement steps
S22:厚度量測步驟 S22: Thickness measurement steps
S3:設定切削路徑步驟 S3: Steps to set cutting path
S4:進行切削加工步驟 S4: Carry out cutting processing steps
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| TW111142119A TWI823664B (en) | 2022-11-04 | 2022-11-04 | Production method of automated bamboo cups |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412116A (en) * | 2007-10-18 | 2009-04-22 | 庄添财 | Veneer lathe for cup mouth |
| CN213996797U (en) * | 2020-11-29 | 2021-08-20 | 赖达勤 | Thickness measuring device of bamboo tube sorting machine |
| CN114247905A (en) * | 2022-02-09 | 2022-03-29 | 浙江华壹钢业有限公司 | Alloy steel flange automatic positioning turning device |
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- 2022-11-04 TW TW111142119A patent/TWI823664B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412116A (en) * | 2007-10-18 | 2009-04-22 | 庄添财 | Veneer lathe for cup mouth |
| CN213996797U (en) * | 2020-11-29 | 2021-08-20 | 赖达勤 | Thickness measuring device of bamboo tube sorting machine |
| CN114247905A (en) * | 2022-02-09 | 2022-03-29 | 浙江华壹钢业有限公司 | Alloy steel flange automatic positioning turning device |
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