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山東汽車沖壓模具怎么維修

刮刮乐2000 www.yfrmbf.com.cn 來源:    發布時間:2019-04-26 13:22:42    點擊:

  模具修理:
  Die repair:
  模具的修理指的是模具在不能滿足預定的使用要求或制件不能滿足質量要求的情況下對模進行的修復工作。此項工作由模具修理工完成。以下就幾種模具常見的故障的修理方法及要求進行說明。
  Mould repair refers to the repair of the die when the die can not meet the predetermined use requirements or the parts can not meet the quality requirements. This work is done by the die repairman. The repairing methods and requirements for common faults of several dies are described below.
  A、刀口崩刃:
  A. Blade breaking:
  山東模具在使用中由于各種原因引起的崩刃,都會對制件的質量產生一定的影響。它是模具修理中比較常見的修理內容之一,對刀口的崩刃修理步驟如下:
  The blade collapse caused by various reasons in the use of Shandong moulds will have a certain impact on the quality of the parts. It is one of the most common repairing contents in die repairing. The steps of repairing tool edge collapse are as follows:
  1.根據崩刃的情況,如果崩刃很小時,通常要將崩刃處用砂輪機磨大些,以保證焊接牢固,不易再次崩刃;2.用相應的焊條進行焊接,目前我們采用的是D332焊條來對刃口進行堆焊。堆焊之前一定要選好修理的基準面,包括間隙面和非間隙面;3.將刃口的非間隙面修平(參考事先留下的基準);4.對照過渡件進行劃線,如果沒有過渡件可以用事先留下的基準進行粗磨間隙面;5.上機臺對間隙面進行修配,可借助粘土等輔助研配。在修配過程中一定要小心,開動壓力機時盡量慢,必要時用裝模高度調整向下開,以避免刀口啃壞的現象發生;6.刀口間隙要合理,對于鋼板沖壓模,單邊刀口間隙取板料厚度的1/20。但在實際操作過程中,可以用板料試沖的辦法來檢驗間隙的大小,只要剪切后制件的毛刺達到要求即可,一般情況下,毛刺大小的判定標準是,毛刺高度不大于板料厚度的1/10;7.檢測刀口的間隙面是否與剪切的方向統一;8.間隙配好后,用油石將刀口的間隙面推光滑,以減小生產中板料與刀口的磨擦及廢料下落的阻力。
  1. According to the situation of the avalanche, if the avalanche is very small, the avalanche should be grinded by a grinding wheel to ensure that the welding is firm and the avalanche is not easy to occur again. 2. The corresponding electrode is used for welding. At present, D332 electrode is used for surfacing the edge. Before surfacing, it is necessary to select the repair datum surface, including gap surface and non-gap surface; 3. smoothing the non-gap surface of the edge (refer to the datum left beforehand); 4. marking the transition part, if there is no transition part, rough grinding the gap surface with the datum left beforehand; 5. repairing the gap surface with the help of clay and other auxiliary grinding. In the process of repair, care must be taken to start the press as slowly as possible, and adjust the height of the die downward when necessary, so as to avoid the phenomenon of knife-edge gnawing; 6. Knife-edge clearance should be reasonable, for the steel plate stamping die, one-sided knife-edge clearance takes one-twentieth of the thickness of the sheet metal. But in the actual operation process, we can use the method of plate punching to check the gap size, as long as the burr of the cut part meets the requirements. Generally, the criterion for determining the burr size is that the burr height is not more than 1/10 of the thickness of the sheet metal; 7. Whether the gap surface of the cutting edge is consistent with the direction of the cutting; 8. When the gap is matched, the gap surface of the cutting edge is pushed smooth by oil stone. Slip to reduce friction between plate and knife edge and resistance of waste falling in production.
  B、毛刺:
  B. Burrs:
  制件在修邊、沖孔和落料時易出現毛刺過大的現象,產生毛刺的原因主要為模具刃口間隙大和刃口間隙小兩類:
  When trimming, punching and blanking, the burr of parts is too large. The main reasons for burr are large clearance of die edge and small clearance of blade edge.
  間隙大時:斷面光亮帶很小或基本上看不見,毛刺的特點為厚而大,不易除去;間隙小時:斷面出現兩光亮帶,由于間隙小,其毛刺的特點為高而薄。
  When the clearance is large, the bright band of the section is very small or basically invisible, and the burr is characterized by thick and large burr, which is difficult to remove; when the clearance is small, there are two bright bands in the section. Because of the small clearance, the burr is characterized by high and thin burr.
  間隙大時的修理方法:
  Repair methods for large clearance:
  1.修邊和沖孔工序采用凸模不動而修整凹模的辦法,而落料工序時則以凹模為基準,即凹模尺寸不變,通過修整凸模的辦法。以上的區別是為了保證產品尺寸不在修理前后受影響;2.對著制件找出模具刃口間隙大的部位;3.用相應的焊條(D332)對此部位進行補焊,以保證模具刃口的硬度;4.修配刀口間隙(其方法與刀口崩刃的方法相同)。
  1. In trimming and piercing process, the punch is fixed and the die is trimmed, while in blanking process, the die is used as the reference, that is, the die size is unchanged, and the punch is trimmed. The above differences are to ensure that the size of the product is not affected before and after repair; 2. Find out the parts with large clearance at the edge of the die; 3. Repair the parts with corresponding welding rods (D332) to ensure the hardness of the die edge; 4. Repair the clearance of the tool edge (the method is the same as the method of tool edge collapse).
  間隙小時的修理方法:
  Repair method for gap hour:
  1.具體的情況依據模具間隙的大小進行調整,以保證間隙的合理。對于修邊沖孔模而言,采用間隙放在凹模的辦法,而對于落料模而言就應采用放大凸模的辦法,從而保證零件的尺寸在修理前后不變;2.修理完成后,要測量其間隙面的垂直,并用板件試刀口間隙是否達到合理的要求。
                                      山東模具
  1. Specific conditions are adjusted according to the size of die clearance to ensure that the clearance is reasonable. For trimming punching die, the gap is placed in the concave die, while for blanking die, the method of enlarging the punch should be adopted to ensure that the dimension of the part remains unchanged before and after repair. 2. After repair, the vertical of the gap surface should be measured, and whether the clearance of the cutting edge of the plate can meet the reasonable requirements.
  對于沖孔模,其產生毛刺后,如果是凸?;虬寄Dニ?,可以找相應的標準件進行更換,如果沒有標準件,可以采用補焊或測繪進行制造。另外,特別指出一點,對于合金鋼材料等焊接性能較差的材料,要進行特殊處理后再進行焊接,如:預熱等,否則會引起模具的開裂。
  For punching die, if the punch or die is worn out after burring, the corresponding standard parts can be replaced. If there is no standard parts, it can be manufactured by repair welding or surveying. In addition, it is especially pointed out that for the materials with poor welding performance such as alloy steel, special treatment should be carried out before welding, such as preheating, otherwise the die will crack.
  C、拉毛:
  C. Grooming:
  拉毛主要發生在拉延、成型和翻邊等工序。
  Drawing mainly occurs in drawing, forming and flanging processes.
  解決方法:1.首先對照制件找出模具的相應拉毛的位置;2.用油石將模具相應的位置推順,注意圓角的大小統一;3.用細砂紙將模具推順部位進行拋光,砂紙在400號以上。
  Solutions: 1. Find out the corresponding position of the die according to the parts; 2. Push the corresponding position of the die with the oil stone, and pay attention to the size of the rounded corners; 3. Polish the pushing part of the die with fine sand paper, and the sand paper is over 400.
  D、修邊和沖孔帶料:
  D. trimming and punching tapes:
  修邊和沖孔帶料產生的主要原因為:修邊或沖孔時模具的壓料或卸料裝置出現異常。
  The main reasons for edge trimming and punching strip material are: abnormal pressure or discharge device of die during edge trimming or punching.
  解決方法:1.根據制件帶的部位找出模具的相應部位;2.檢查模具壓卸料板是否存在異常;3.對壓料板相應部位進行補焊;4.結合制件將焊補部位進行修順,具體的型面與工序件配制;5.試沖;6.如果檢查并非模具壓卸料板的問題,可以檢查模具的刀塊是否有拉毛現象。
  Solutions: 1. Find out the corresponding parts of the die according to the parts of the strip; 2. Check whether there is abnormality in the die press-unload plate; 3. Repair welding the corresponding parts of the press-unload plate; 4. Combine the parts to repair the welding parts, and make the specific surface and process parts; 5. Trial punching; 6. If the inspection is not the problem of the die press-unload plate, check whether the knife block of the die has the brushing phenomenon. 。
 
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