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Based on Pro / E software dedicated fixture design and analysis of location error

971 a), Shandong Cao County man, lT engineer, graduated from the China Petroleum University. T for now in Beijing Coal Mining Machinery Co., Ltd.. Total area is mainly engaged in machinery did not work. Editor: in Xiuwen Received Date :2009-08-13: Blue: Ao Ken Tong Ken King Bolt set error analysis - Cao Yongjie Vol 31 02 ■ a fixture in Figure 2 Figure 3 dimensional positioning error of two-dimensional assembly fixture shown in Figure 3. In the fixture design. Positioning accuracy is usually calculated by the inequality to verify the error. And processes that require all the error related to the total size is less than the tolerance of process size fixture in Figure 3 D Figure 1. Specific folder 2. Adjustment support 3. Moving plate 4. Live bolt 5. Workpiece 6. Pins 7. Diamond grinding plate 8. Replaceable drill sleeve 9. Compression screw l0. Block off l1. Hinge plate l2. Support to 2ll ball hole, for example,[link widoczny dla zalogowanych], the process dimension tolerance O. 1mm. Of (59 ~ 0.05) mm size error process can be summarized as the following 4 factors categories: (1) position error △ D, including the base displacement error and reference do not coincide error △ △. Ll this hole process benchmark 16-hole centers coffee, while qbl6 larvae L center is locating datum, so △ B = 0. Pins manufacturing tolerances ± O. 0lmill, so baseline displacement error △ = O. 01ram (unilateral tolerance). So A - D-~ B + Ay = O. O1mm. (2) of this paper cutter error △ T sets as a quick-change drill tool to tool-oriented components. Have △ (Ⅳ \- drill sleeve height: the height of chip space (3) installation error △ A fixture installed base surface for the paper plane. so AA = 0. (4) jig fixture error error △ J △, including the following four categories error: positioning components installed base relative to the foot,-t-~ position error △ positioning elements relative to the guide element on the knife or the size or position error △ dish; oriented components installed base relative to the size or position error △ J3; indexing error △ F. This with pins in the specific folder is fit, so the children △: = 0; locating pin relative to the drill sleeve of tolerance is the △ 2 = 0.02mm; drill sleeve relative to the verticality of the specific folder is the △ J3 = 0. 0lmm; This device is not dividing, so At = 0. 4 precision computation check this paper, the total error of superposition Σ △, ie Σ △ =, /, based on experience, △. usually take the workpiece tolerances l / 3. to ensure that workpiece accuracy condition Jc = Sk-ZA ~ 0, for the accuracy of reserves. of precision check on the patients were 59 ~ 0.05mm,[link widoczny dla zalogowanych], △ G take 0.033mln, the total machining error Σ △:, / 0.012 +0.056 +0.022 +0.012 +0.033 = 0.069 widely Xa = o.1-0.069 = O.031> 0 check that: the dedicated fixture in full compliance with the workpiece positioning accuracy 5 Conclusion The fixture size requirements and easy to use. positioning accuracy in full compliance with product requirements to ensure product quality while reducing the manufacturing processes, improve productivity, reduce processing costs. References: 【1] SONG ring. square bolt fixture Design [J]. Coal Mine Machinery, 2008,29 (6) :106-108. [2] Zhou Kaihua. Pro / E in the three-dimensional fixture design [J]. Machine Tool & Hydraulics, 2008 (5) :365-369 . [3] Zhang Jinsheng. Machinery manufacturing process and fixture design manual [K]. Beijing: China Machine Press .1995. Author: Cao Yongjie (1982 a), Taizhou,[link widoczny dla zalogowanych], Zhejiang, Mechanical Manufacturing and Automation Master, the main research direction: CNC machine tool error detection and compensation, research design, jigs and fixtures. publishing papers 7. e-mail donallove @ 163. Editor: El in Xiuwen Received :2009 -08-26 of the coal company of Laiwu pressure filter and exported before the National Day Festival. Laiwu, Shandong Mining Machinery Group produced coal and mixing drum pressure filter, the pulp pre-processor and other equipment export to Viet Nam Hung Kai officially shipped,[link widoczny dla zalogowanych], it is the company's exports in 2008 following the Vietnam Palace 3 sets of doors after the pressure filter, another Taiwanese exports to Vietnam washing equipment. In recent years, the company continued to enhance the capability of independent innovation, accelerate the pace of product updates, product technology content and improve the quality stable and reliable, in the consolidation of the domestic market at the same time, the \ More articles related to topics：

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