{"id":20435,"date":"2021-03-08T07:49:50","date_gmt":"2021-03-08T07:49:50","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=20435"},"modified":"2021-03-08T07:49:50","modified_gmt":"2021-03-08T07:49:50","slug":"what-are-the-malfunction-forms-of-mechanical-parts","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/zh\/what-are-the-malfunction-forms-of-mechanical-parts\/","title":{"rendered":"\u673a\u68b0\u96f6\u4ef6\u7684\u6545\u969c\u5f62\u5f0f\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"
\n

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A: generally, the threaded connection can meet the self-locking condition without automatic loosening, but under vibration or impact load, or when the temperature changes greatly, the connecting nut may gradually loosen. The main reason for thread looseness is the relative rotation between thread pairs. Therefore, in actual design, anti looseness measures must be taken. The commonly used measures are as follows: 1. Friction anti looseness – to maintain the friction between thread pairs to prevent looseness, such as adding spring washer and pushing double nuts; 2. Mechanical anti looseness – to use stop parts to ensure anti looseness, which is often used It is groove nut and split pin, etc.; 3. Destroy thread pair anti loosing – destroy and change thread pair relationship, such as impact method.<\/p>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

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6\u3001\u7b80\u8ff0\u9f7f\u5f62\u556e\u5408\u7684\u57fa\u672c\u89c4\u5f8b\u3002<\/h2>\n\n\n\n

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7\u3001\u8f74\u7c7b\u96f6\u4ef6\u5706\u5468\u56fa\u5b9a\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b\uff1f <\/h2>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

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9\u3001\u4e3a\u4ec0\u4e48\u95ed\u5f0f\u8717\u6746\u4f20\u52a8\u5fc5\u987b\u8fdb\u884c\u70ed\u5e73\u8861\u8ba1\u7b97\uff1f<\/h2>\n\n\n\n

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10\u3001\u9f7f\u8f6e\u5f3a\u5ea6\u8ba1\u7b97\u6709\u54ea\u4e24\u79cd\u5f3a\u5ea6\u8ba1\u7b97\u7406\u8bba\uff1f <\/h2>\n\n\n\n

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12\u3001\u52a0\u8f7d\u6cb9\u819c\u7684\u5fc5\u8981\u6761\u4ef6\u662f\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n

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13\u3001\u7b80\u8ff07310\u578b\u8f74\u627f\u7684\u542b\u4e49\u3001\u7279\u70b9\u53ca\u7528\u9014\u3002<\/h2>\n\n\n\n

A: code meaning: 7 – angular contact ball bearing; (0) – normal width, 0 – can be omitted or not written; 3 – diameter series is medium series; 10 – bearing inner diameter is 50mm.<\/p>\n\n\n\n

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14\u3001\u9f7f\u8f6e\u4f20\u52a8\u3001\u76ae\u5e26\u4f20\u52a8\u3001\u94fe\u4f20\u52a8\u7ec4\u6210\u7684\u4f20\u52a8\u7cfb\u7edf\u4e2d\uff0c\u6700\u9ad8\u901f\u5ea6\u7ea7\u5e94\u5e03\u7f6e\u4ec0\u4e48\u4f20\u52a8\uff1f\u4ec0\u4e48\u9a71\u52a8\u5668\u88ab\u5b89\u6392\u5728\u6700\u4f4e\u901f\u5ea6\u7ea7\u522b\uff1f\u4e3a\u4ec0\u4e48\u8981\u8fd9\u6837\u5b89\u6392\u5462\uff1f<\/h2>\n\n\n\n

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15\u3001\u94fe\u6761\u4f20\u52a8\u901f\u5ea6\u4e0d\u5747\u5300\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u5f71\u54cd\u5b83\u7684\u4e3b\u8981\u56e0\u7d20\u6709\u54ea\u4e9b\uff1f\u4ec0\u4e48\u6761\u4ef6\u4e0b\u77ac\u65f6\u4f20\u52a8\u6bd4\u53ef\u4ee5\u6052\u5b9a\uff1f<\/h2>\n\n\n\n

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16\u3001\u5706\u67f1\u9f7f\u8f6e\u51cf\u901f\u673a\u4e2d\uff0c\u4e3a\u4ec0\u4e48\u5c0f\u9f7f\u8f6eB1\u7684\u5bbd\u5ea6\u7565\u5927\u4e8e\u5927\u9f7f\u8f6eB2\u7684\u5bbd\u5ea6\uff1f\u8ba1\u7b97\u5f3a\u5ea6\u65f6\uff0c\u9f7f\u5bbd\u7cfb\u6570\u03c8d\u662f\u6309B1\u8ba1\u7b97\u8fd8\u662f\u6309B1\u8ba1\u7b97\uff1f\u4e3a\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n

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17\u3001\u51cf\u901f\u5e26\u4f20\u52a8\u65f6\u4e3a\u4ec0\u4e48\u8981\u4f7f\u5c0f\u5e26\u8f6e\u76f4\u5f84D1\u2265Dmin\u3001\u4e3b\u52a8\u8f6e\u5305\u89d2\u03b11\u2265120\u00b0\uff1f\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5e26\u901f\u5efa\u8bae\u5728\uff085-25\uff09m\/s\u4e4b\u95f4\u3002\u76ae\u5e26\u901f\u5ea6\u8d85\u51fa\u8fd9\u4e2a\u8303\u56f4\u4f1a\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f<\/h2>\n\n\n\n

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18\u3001\u6eda\u52a8\u87ba\u6746\u7684\u4f18\u7f3a\u70b9\u3002<\/h2>\n\n\n\n

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19. \u6309\u952e\u9009\u62e9\u539f\u5219\uff1f<\/h2>\n\n\n\n

Answer: type selection and size selection: type selection should be based on the structural characteristics of key connection, use requirements and working conditions The size selection shall be determined according to the requirements of standard specifications and strength. The dimension of key is the section dimension (key width b* key height h) and length L. the section dimension b * h is selected by the diameter of the shaft D, and the key length l can be determined by the length of the hub, that is, the key length L is less than the hub length, while the guide flat key determines the general hub length L ‘~ (1.5-2) according to the length of the hub and the sliding distance \uff09*d\u3002<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

The following few aspects are closly connected with the malfunction of mechanical parts: \uff081\uff09 Integral fracture (2) excessive residual deformation (3) surface malfunction\u00a0of parts (4) malfunction\u00a0caused by malfunction\u00a0of normal working conditions 1. Why thread connection often needs anti loosing? A: generally, the threaded connection can meet the self-locking condition without automatic loosening, but under vibration…<\/p>","protected":false},"author":2,"featured_media":20440,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[107],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2021\/03\/\u56fe\u72473-4.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts\/20435"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/comments?post=20435"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts\/20435\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/media\/20440"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/media?parent=20435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/categories?post=20435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/tags?post=20435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}