Problems summary and solution of punching die Common
following on the production < / of common stamping adverse phenomena and its causes and treatment measures are analyzed as follows. For mold maintenance personnel reference.
1. punching piece trimmings.
(1) problem: A, the wear of the blade B, the gap is; too large training edge effect is not obvious; edge chipping; D C, unreasonable clearance, between the upper and lower offset or loose; E under, dislocation.
(2) solution: A。 Training edge; B control, punch mac Hining accuracy or to modify the design gap; training edge; D C, adjust the, blanking clearance confirmation template hole wear or molding machining precision etc。 E, replacing guide or; to die。
2. jump scraps press injury "(1) problem: A, the gap is too large; feeding improper; B, C, stamping oil drop too fast, viscous oil; D die, without demagnetization; E, punch wear, scrap material to be pressed to be attached to the punch punch is too short; F, insert, the die length deficiency; G relatively hard, material punching, simple shape; H emergency, measures.
(2) solution: A. Control punch machining accuracy or modify the design gap B, sent to the; proper position of the trim material belt and the timely liquida Tion of mold; C control the stamping oil droplets of, oil amount, or replace the oil for reducing viscosity; die d, training must demagnetization (red iron material must also note E, training the); punch knife edge; F adjusting, punch edge into the die G the change of, length; materials, modify the design. The convex die cutting edge into the end face of the assembly or repair out of the slope or arc (note direction). Reduce convex mould blade end and debris material bonded area reduced foveolar die cutting; h, edge sharpness, reduce training volume of the blade die pits, concave die and straight blade surface (roughness coating increased vacuum cleaner waste) by suction. Reduce rush speed, slow down the chip.
3. scraps block Ing (1) problems: A, leakage discharge hole is too small leaking hole is too; B, large, rolling debris material the wear of the; C, blade, burr, larger; D, stamping oil drop too fast, viscous E, die straight blade oil; rough surface, crumb sintering attachment in blade; F soft, material; and (g), emergency measures.
(2) solution: A, modify the leaking hole B, modify the leaking; hole; C, edge trimming knife edge D and the control of; oil droplet, replacement of oil types; surface treatment, polishing, E, processing attention to reduce the surface roughness material; change, F, modify blanking G, punch edge end clearance; repair angle or arc (note the direction), use a vacuum cleaner, plate blanking holes blown in。
4. material deviation size variation of
(1): A, punch and die。 The blade wear, produce the flash (the appearance of inner hole is too large, too B, design small); dimensions and clearance improper poor machining accuracy feeding a punch and; C, die insert, deviation gap, all D; Guide, pin wear, pin diameter; E guide wear; F, distance, pressing, relax, send improper adjustment of feeding machine die die height adjustment; G, improper; H, stripping pressure insert material wear without pressing (pressure) function (material traction unloading caused by punching a small I, unloading insert); pressure too deep, punching too large the mechanical properties of J; materials stamping variation (strength elongation instability); K, Punching, punching strength of materials caused by traction, size variation。
(2) solution: blade a and training; B modify the, design machining, accuracy control; C adjust the, position accuracy, blanking clearance; D replacing the, guide E, replacing the guide pins; column and a guide sleeve F, re adjust; the feeding machine re adjust the closing; G, height; h, research grinding or replacement of stripping insert block increase the, coerce function, to adjust the pressure of material; I reduce, crush depth; J the change, of materials, to control the quality of incoming material K, punch edge end; of a slope or arc (note the direction) and to improve the punching by force。 Permission is now located in the material part of th E material is located on the insert block plus a guide function。 Erection of lack of material caused by abnormal larger (
5. card, data < p > 1): A, feeding machine to send distance, binder relax, improper adjustment; B production transfer, distance variation; C feeding, machine D, arc-shaped material, fault; width, flash; e < stamping die, the sickle bending; F a, guide aperture, die drawing material; G bending, or tear, cut off not shun h, guide plate stripping; function is set incorrectly the material belt belt I, thin material and; sent to the warp of J, mold properly; and, to send material machine verticality deviation is larger.
(2) solution: A, re adjust; B re, adjustment C, adjustment and maintenance; D the, change of materials, to control the quality of incoming material E, eliminate the strip; camber; F, training a blanking guide is Kong Tu, die G, adjust the stripping; force springs; H modify the, material guiding, anti material tape; I feeding machine and the, mold is arranged on the pressure data, and set up under the material extruding safety switch re erecting die。
6.; J, strip < p > camber (1) the problem: A stamping burr (especially vector); B, material flash, die cut edge; C punching, depth inappropriate (too deep or too shallow D, stamping); pressure injury, internal model with scrap material E, partial pressure material; too deep or pressure to the local damage; F mold, design.
(2) solution: A, Training blanking edge; B the change, of materials, mold design edge cutting device C re adjust the depth; of the punch; D cleans up, the mold, solve the scraps jumping and bruised problem E, check and adjust; your stripping and die insert block size height is correct a training (F, injury; the whole bending adjusting), mechanism.
7. punch fracture chipping
(1): A, jump bits, scraps blocking, die as a result of the B card; and feed properly, half cutting material; C punch strength, is insufficient; D the size of the, punch were too close to punching material traction, caused by small punch off punch and die for; E, local F, too sharp the blanking clearance is too; small; G, without pressing oil or the use of more Vo Latile pressing oil; H blanking, gap uneven, offset convex, and concave interference; I stripping insert precision, or wear, loss of precision guiding function no, J die, oriented; abrasion; K, punch and die material of improper selection, improper I, hardness; wear; guide materials (Sales) m, adding the improper gasket.
(2): A solution, solution. Jump bits, scraps blocking, clamping and so on pay attention to feeding; B, timely, pruning material, cleaning the mold in a timely manner; C modify the, design increase, the overall strength of the punch, die cut size and straight edge, pay attention to punch edge end repair a slope or arc fine after, cutting D, small punch length; grinding short punch a relatively large thickness Above; E, F, modified design machining precision control punch or modify; the design gap, fine blanking clearance of G, adjust the appropriate increase press oil drop of oil or; oil replacement H; check the, forming precision, and to adjust or replace the control of machining precision; I J, or replacement, training replacement of a guide pole and; a guide sleeve, pay attention to the daily maintenance to replace the use; K, of materials, using appropriate hardness; I change, the materials; m modified gasket count Can, be less, and the use of steel mats, concave die pad under the pad to pad. Poor poor. Lack of variation
8. bending deformation size "(1): A, guide pin wear and pin diameter insufficient B bending guide bit p; Recision, wear; C, bending convex, concave die wear (pressure loss); D, mould abdicating. E material slip and bending convex, concave die without guide function, bending is not to impose preloading die structure and design; F, dimensions; G, stamping burr, causing h, bending parts of bending; the convex die die, pad more, causing the size instability; I material, thickness variation; J material mechanical shape can, change.
(1) solution: A, replacing the guide pins B, re grinding or; replacement; C, re grinding or replacement; D check, and correction; E modify, the design, adding Guide and pre pressing function modify the design size; F, decomposition, of bending, bending G, training under the shaping; cutting knife; h, the Adjustment, the overall steel pad the change of materials; I, to, control the quality of incoming material the change of materials; J, to, control the quality of incoming material.
9. stamping height (mode a) < p >456棋牌 (2) the problem: A, stamping B, punching parts have burr; crushed and die with debris material; C, convex, concave die (bending) pressure loss or injury; D punching, material turning E and related material pressing parts; wear pressure loss; F tear and, cut a tear, cut inconsistent, size knife, edge G, related to axial wear; pre cut depth of inconsistencies, punch have wear or edge collapse h, related hit convex; convex concave die is chipping or wear is serious I, mold design defects.;
(2) solution : a training, feeding a knife edge; B, cleaning the mold to solve the debris material rising; C, re training or replace a new; D, training a punching knife edge, adjustment or additional crush function; E, inspection, maintenance or replacement. F: repair or replacement to ensure tear and cut in line; G, check the pre cutting convex and smoothly mold condition, implementation and maintenance or replacement; h, check the convex and smoothly mold condition, the implementation of maintenance or replacement; I, modify the desi