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山东模具:五金模具维修经验

来源:    发布时间:2019-07-01 16:40:20    点击:

  模具常见毛病产生的缘由。处置对策
  Causes of common defects in dies. Disposal Countermeasures
  在级进模的冲压消费中,针对冲压不良现象必需做到详细剖析,采取卓有成效的处置对策,从基本上处理所发作之问题,如此才干降低消费本钱,到达消费顺畅。以下就消费中常见的冲压不良现象其产生的缘由及处置对策剖析如下,供模具维修人员参考。
  In the stamping consumption of progressive dies, it is necessary to analyze the phenomenon of poor stamping in detail and adopt effective countermeasures to deal with the problems occurring basically so as to reduce the cost of consumption and achieve smooth consumption. Following is an analysis of the causes of common stamping defects in consumption and the countermeasures to deal with them, which can be used as a reference for die maintenance personnel.
  1.冲件毛边。
  1. Blanking edge.
  (1)缘由:a、刀口磨损; b、间隙过大研修刀口后效果不明显;c、刀口崩角; d、间隙不合理上下偏移或松动; e、模具上下错位。
  (1) Reasons: a, tool wear; b, too large clearance grinding tool edge effect is not obvious; c, tool edge angle collapse; d, unreasonable upward and downward displacement or loosening of clearance; e, upper and downward displacement of die.
  (2)对策:a、研修刀口;b、控制凸凹模加工精度或修正设计间隙;c、研修刀口;d、调整冲裁间隙确认模板穴孔磨损或成型件加工精度等问题;e、改换导向件或重新组模。
  (2) Countermeasure: a, grinding tool edge; b, controlling punch and concave die processing accuracy or modifying design clearance; c, grinding tool edge; d, adjusting blanking clearance to confirm hole wear or forming parts processing accuracy; e, changing guide parts or re-assembling die.
  2.跳屑压伤
  2. Scrap and crush
  (1)缘由:a、间隙偏大; b、送料不当;c、冲压油滴太快,油粘;d、模具未退磁;e、凸模磨损,屑料压附于凸模上;f、凸模太短,插入凹模长度缺乏;g、材质较硬,冲切外形简单;h、应急措施。
  (1) Reasons: a, the gap is too large; b, improper feeding; c, the oil droplets are too fast and sticky; d, the die is not demagnetized; e, the punch is worn and the chip is pressed on the punch; f, the punch is too short and the length of the insertion die is insufficient; g, the material is hard, the punching shape is simple; h, emergency measures.
  (2)对策:a、控制凸凹模加工精度或修正设计间隙;b、送至恰当位置时修剪料带并及时清算模具;c、控制冲压油滴油量,或改换油种降低粘度;d、研修后必需退磁(冲铁料更须留意);e、研修凸模刀口; f、调整凸模刃入凹模长度;g、改换资料,修正设计。凸模刃入端面装顶出或修出斜面或弧性(留意方向)。减少凸模刃部端面与屑料之贴合面积;h、减小凹模刃口的尖利度,减小凹模刃口的研修量,增加凹模直刃部外表的粗糙度(被覆),采用吸尘器吸废料。降低冲速,减缓跳屑。
  (2) Countermeasure: a, control punch and concave die processing accuracy or modify design clearance; b, trim material belt and settle the die in time when it is sent to the appropriate position; c, control the amount of oil droplets in stamping, or change oil species to reduce viscosity; d, demagnetization is necessary after finishing (more attention should b e paid to iron stamping); e, study punch tool edge; f, adjust punch edge into concave. Length of die; g. Change data, revise design. Punch blade into the end of the ejection or repair the inclined or arc (pay attention to the direction). Reduce the area between the end face of punch and chip; H. Reduce the sharpness of the die edge, reduce the amount of research and repair of the die edge, increase the roughness (covering) of the straight edge of the die, and use vacuum cleaner to absorb waste. Reduce the impulse speed, slow down the chip.
  3.屑料阻塞
  3. Chip Blockage
  (1)缘由:a、漏料孔偏小;b、漏料孔偏大,屑料翻腾;c、刀口磨损,毛边较大;d、冲压油滴太快,油粘;e、凹模直刃部外表粗糙,粉屑烧结附着于刃部;f、材质较软;g、应急措施。
  (1) Reasons: a. Leakage holes are small; B. Leakage holes are large and scrap material is turning; C. Knife edge is worn and the edge is big; D. Punching oil droplets are too fast and sticky; E. Direct edge of die is rough and powder sintering adheres to the edge; f. Material is soft; g. Emergency measures.
  (2)对策:a、修正漏料孔;b、修正漏料孔;c、刃修刀口;d、控制滴油量,改换油种;e、外表处置,抛光,加工时留意降低外表粗糙度;更改资料,f、修正冲裁间隙;g、凸模刃部端面修出斜度或弧形(留意方向),运用吸尘器,在垫板落料孔处加吹气。
  (2) Countermeasures: a. Correcting leaking hole; B. Correcting leaking hole; C. Edge trimming; D. Controlling the amount of oil dripping and changing oil types; E. Appearance disposal, polishing and attention to reducing surface roughness during processing; Changing data, f. Correcting blanking clearance; g. Cutting slope or arc (attention direction) at the end of punch edge, using vacuum cleaner. The device adds air blowing at the blanking hole of the cushion plate.
  4.下料偏位尺寸变异
  4. Size variation of cutting offset
  (1)缘由:a、。凸凹模刀口磨损,产生毛边(外形偏大,内孔偏小);b、设计尺寸及间隙不当,加工精度差;c、下料位凸模及凹模镶块等偏位,间隙不均;d、导正销磨损,销径缺乏;e、导向件磨损;f、送料机送距、压料、放松调整不当;g、模具闭模高度调整不当;h、卸料镶块压料位磨损,无压料(强压)功用(资料牵引翻料引发冲孔小);i、卸料镶块强压太深,冲孔偏大;j、冲压资料机械性能变异(强度延伸率不稳定);k、冲切时,冲切力对资料牵引,引发尺寸变异。
  (1) Reasons: a. The tool edge of punch and concave die is worn, resulting in rough edge (larger shape, smaller inner hole); b, inappropriate design size and clearance, poor processing accuracy; c, offset of punch and insert of concave die, uneven clearance; d, wear of guide pin, lack of pin diameter; e, wear of guide parts; f, improper feeding distance, pressing and relaxation adjustment of feeder;g. (2) improper adjustment of die closing height; h. abrasion of material level of unloading insert, no pressing function (small punching caused by data pulling and turning); I. too deep pressure of unloading insert, too large punching hole; J. variation of mechanical properties of punching data (unstable strength elongation); K. punching force pulls and leads to data when punching. Hair size variation.
  (2)对策:a、研修刀口; b、修正设计,控制加工精度;c、调整其位置精度,冲裁间隙;d、改换导正销;e、改换导柱、导套;f、重新调整送料机;g、重新调整闭模高度;h、研磨或改换卸料镶块,增增强压功用,调整压料;i、减小强压深度;j、改换资料,控制进料质量;k、凸模刃部端面修出斜度或弧形(留意方向),以改善冲切时受力情况。答应时下料部位于卸料镶块上加设导位功用。
  (2) Countermeasure: a, grinding tool edge; b, modifying design to control processing accuracy; c, adjusting its position accuracy and blanking clearance; d, changing guide pin; e, changing guide pillar and guide sleeve; f, adjusting feeder; g, adjusting closed die height; h, grinding or changing unloading insert, enhancing pressure function and adjusting pressure material; Reduce the depth of pressure; J. Change the data to control the quality of feed; K. Modify the end face of punch blade with slope or arc (pay attention to direction) to improve the force condition during punching. When promised, the discharging position is added to the discharging insert with a guide function.
  5.卡料
  5. stuffing
  (1)缘由:a、送料机送距、压料、放松调整不当;b、消费中送距产生变异;c、送料机毛病;d、资料弧形,宽度超差,毛边较大;e、模具冲压异常,镰刀弯引发;f、导料孔径缺乏,上模拉料;g、折弯或撕切位上下脱料不顺;h、导料板之脱料功用设置不当,料带上带;i、资料薄,送进中翘曲;j、模具架设不当,与送料机垂直度偏向较大。
  (1) Reasons: A. inappropriate feeding distance, pressing and relaxation adjustment of feeder; B. variation of feeding distance in consumption; C. faults of feeder; D. data arc, excessive width and large hairline; E. abnormal punching of die, caused by sickle bending; F. lack of guide aperture, drawing of upper die; g. bad stripping of upper and lower parts at bending or tearing cutting positions; H. improper setting of stripping function of guide plate, belt on material belt; I. thin data, warping in feeding; J. improper setting of die, which deviates from the perpendicularity of feeder.
  (2)对策:a、重新调整;b、重新调整;c、调整及维修;d、改换资料,控制进料质量;e、消弭料带镰刀弯;f、研修冲导正孔凸、凹模;g、调整脱料弹簧力气等;h、修正导料板,防料带上带;i、送料机与模具间加设上下压料,加设上下挤料平安开关;j、重新架设模具。
  (2) Countermeasure: a, readjustment; b, readjustment; c, adjustment and maintenance; d, change data to control feed quality; e, eliminate the sickle bending of blanking belt; f, research and repair the punching convex and concave die; g, adjust the force of stripping spring; h, modify the guide plate and take-up of blanking belt; i, add up and down pressure material between feeder and die. The upper and lower extrusion safety switch is added, and the die is re-erected.
  6.料带镰刀弯
  6. Belt Sickle Bending
  (1)缘由:a、冲压毛边( 特别是载体上);b、资料毛边,模具无切边;c、冲床深度不当(太深或太浅);d、冲件压伤,模内有屑料;e、部分压料太深或压到部部分损伤;f、模具设计。
  (1) Reasons: a, stamping edge (especially on the carrier); b, data edge, die without cutting edge; c, improper depth of punch (too deep or too shallow); d, stamping parts with scraps in the die; e, part of the material is too deep or part damaged; f, die design.
山东模具
  (2)对策:a、研修下料刀口; b、改换资料,模具加设切边安装;c、重调冲床深度;d、清算模具,处理跳屑和压伤问题;e、检查并调整各位卸料及凹模镶块高度尺寸正确,损伤位研修;f、采用整弯机构调整。
  (2) Countermeasure: a. Research and repair the cutting edge; B. Change the material and install the cutting edge of the die; C. Re-adjust the depth of the punch; D. Clean up the die to deal with chip skipping and crushing problems; E. Check and adjust the height and dimension of each discharging and die insert to correct and repair the damage position; f. Use the bending mechanism to adjust.
  7.凸模断裂崩刃
  7. Fracture and Blade Breaking of Punch
  (1)缘由:a、跳屑、屑料阻塞、卡模等招致;b、 送料不当,切半料;c、凸模强度缺乏;d、大小凸模相距太近,冲切时资料牵引,引发小凸模断;e、凸模及凹模部分过于尖角;f、冲裁间隙偏小;g、无冲压油或运用的冲压油挥发性较强;h、冲裁间隙不均、偏移,凸、凹模发作干预;i、卸料镶块精度差或磨损,失去精细导向功用;j、模具导向不准、磨损;k、凸、凹模材质选用不当,硬度不当;i、导料件(销)磨损; m、垫片加设不当。
  (1) Reasons: a, chip skipping, chip blocking, die clamping and other causes; b, improper feeding, half cutting; c, punch strength deficiency; d, large and small punches are too close to each other, data traction during punching, resulting in small punch breakage; e, punch and die parts are too sharp; f, punching clearance is too small; g, non-punching oil or used punch oil volatility is strong; h, punching clearance is uneven, offset, etc. Intervention of punch and concave die attack; I. poor precision or wear of unloading insert, loss of fine guiding function; J. inaccurate guide and wear of die; improper selection of material for k, punch and concave die, improper hardness; I. abrasion of guide parts (pins); improper addition of M and gasket.
  (2)对策:a、。处理跳屑、屑料阻塞、卡模等问题; b、留意送料,及时修剪料带,及时清算模具;c、修正设计,增加凸模整体强度,减短凹模直刃部尺寸,留意凸模刃部端面修出斜度或弧形,细小部后切;d、小凸模长度磨短相对大凸模一个料厚以上;e、修正设计;f、控制凸凹模加工精度或修正设计间隙,细小部冲切间隙恰当加大;g、调整冲压油滴油量或改换油种;h、检查各成形件精度,并施以调整或改换,控制加工精度;i、研修或改换;j、改换导柱、导套,留意日常颐养;k、改换运用材质,运用适宜硬度;i、改换导料件; m、修正,垫片数尽可少,且运用钢垫,凹模下垫片需垫在垫块下面。
  (2) Countermeasure: a. Deal with chip skipping, chip blocking, clamping and other issues; B. Pay attention to feeding, timely trimming material belt, timely clearing die; C. Revise design, increase the overall strength of punch, reduce the size of straight edge of concave die, pay attention to the obliquity or arc of the end face of punch edge, after cutting small parts; d, the length of small punch is shorter than one material thickness of large punch; e, revise design; f, control punch and concave; Mould processing accuracy or revised design clearance, small punching clearance properly increased; g, adjust the amount of oil droplets or change the oil species; h, check the accuracy of each forming part, and adjust or change it to control the processing accuracy; i, research or change; j, change guide pillar, guide sleeve, pay attention to daily maintenance; k, change the use of materials, use appropriate hardness; i, change guide material parts; m, repair; The number of gaskets is very small, and steel gaskets are used. The gaskets under the concave die need to be placed under the gaskets.
  8.折弯变形尺寸变异
  8. Size Variation of Bending Deformation
  (1)缘由:a、导正销磨损,销径缺乏;b、折弯导位局部精度差、磨损;c、折弯凸、凹模磨损( 压损);d、模具让位缺乏;e、资料滑移,折弯凸、凹模无导位功用,折弯时未施以预压;f、模具构造及设计尺寸不良;g、冲件毛边,引发折弯不良;h、折弯部位凸模、凹模加设垫片较多,形成尺寸不稳定;i、资料厚度尺寸变异;j、资料机械形能变异。
  (1) Reasons: A. wear of guide pin and lack of pin diameter; B. poor local accuracy and wear of bending guide position; C. wear of bending convex and concave die (pressure loss); D. lack of die alienation; E. slip of data, no guide function of bending convex and concave die, no pre-pressing was applied in bending; F. poor die structure and design dimension; G. blank edge of punch, resulting in poor bending; h. bending convex part; There are many gaskets added to the die, resulting in unstable size; I. Variation of data thickness and size; J. Variation of data mechanical shape and energy.
  (2)对策:a、改换导正销;b、重新研磨或改换;c、重新研磨或改换;d、检查,修正;e、修正设计,增设导位及预压功用;f、修正设计尺寸,合成折弯,增加折弯整形等;g、研修下料位刀口; h、调整,采用整体钢垫;i、改换资料,控制进料质量;j、改换资料,控制进料质量。
  (2) Countermeasure: a, change guide pin; b, re-grind or change; c, re-grind or change; d, check and amend; e, revise design, add guide position and pre-pressure function; f, revise design size, synthesize bending, increase bending and shaping; g, study cutting edge; h, adjust, use integral steel pad; i, change data, control feed quality; j, change data; Control feed quality.
  9.冲件上下(一模多件时)
  9. stamping parts up and down
  (1)缘由:a、冲件毛边;b、冲件有压伤,模内有屑料;c、凸、凹模(折弯位)压损或损伤;d、冲剪时翻料;e、相关压料部位磨损、压损;f、相关撕切位撕切尺寸不分歧,刀口磨损; g、相关易断位预切深度不分歧,凸凹模有磨损或崩刃; h、相关打凸部位凸凹模有崩刃或磨损较为严重; i、模具设计缺陷。
  (1) Reasons: a, blank edge; b, punch has crush, there is chip in the die; c, convex and concave die (bending position) is crushed or damaged; d, blanking during punching and shearing; e, related pressing parts are worn and pressed; f, the size of tear cutting position is not different, tool edge is worn; g, relevant pre-cutting depth of transposition is not different, convex and concave die is worn or flattened; h, relevant punching parts are convex and concave parts are worn and concave; Die has a serious edge breakdown or wear; I. Die design defects.
  (2)对策:a、研修下料位刀口; b、清算模具,处理屑料上浮问题;c、重新研修或改换新件;d、研修冲切刀口,调整或增设强压功用;e、检查,施行维护或改换;f、维修或改换,保证撕切情况分歧; g、检查预切凸、凹模情况,施行维护或改换;h、检查凸、凹模情况,施行维护或改换;i、修正设计,加设上下调整或增设整形工位。
  (2) Countermeasure: a, research and repair the cutting edge of cutting level; b, liquidation die to deal with the problem of chip material floating; c, Re-research or replace new parts; d, research and repair punching cutting edge to adjust or add pressure function; e, inspection, maintenance or replacement; f, maintenance or replacement to ensure that the tearing situation is different; g, check the situation of pre-cut punch and concave die, implement maintenance or replacement; h, check punch and concave; Mould condition, maintenance or replacement; I. Revision design, add up and down adjustment or additional shaping station.
  10.维护不当
  10. Improper maintenance
  (1)缘由:a、模具无防呆功用,组模时忽略招致装反方向、错位(指不同工位)等;b、曾经偏移过间隙之镶件未按原状恢复。
  (1) Reasons: a. Mould has no anti-dull function, neglecting to cause reverse direction of assembly and dislocation (referring to different positions) when assembling the mould; B. Inserts that have offset the gap have not been restored as they are.
  (2)对策:a、修正模具,增防呆功用;b、采模具上做记号等方式,并在组模后对照料带做必要的检查、确认,并做出书面记载,以便查询。
  (2) Countermeasure: a. Mould modification to increase the function of anti-stupidity; B. Marking on the mining die and making necessary checks and confirmations on the material strip after forming the die, and making written records for inquiry.
  在冲压消费中,模具的日常维护作业至关重要,即日常留意检查冲压机及模具能否处于正常状态,如冲压油的供应导向部的加油。模具上机前的检查,刃部的检查,各部位锁紧确实认等,如此可防止许多突发性事故的产生。修模时一定要先想然后行,并认真做好记载积聚经历。以上是山东模具厂家为大家整理的相关内容,想要了解更多内容,欢迎大家访问:http://www.ebhch.com
  In stamping consumption, the daily maintenance of the die is very important, that is, daily attention to check whether the stamping machine and the die can be in normal condition, such as the refueling of the supply guide part of the stamping oil. The inspection before the die is put on the machine, the inspection of the edge, the locking of each part and so on can prevent the occurrence of many sudden accidents. When repairing moulds, we must first think and then act, and record accumulative experience carefully. The above is the related content that Shandong Mold Manufacturer sorted out for you. If you want to know more, you are welcome to visit: http://www.ebhch.com.
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