1.Workpiece size is exact, the surface is bright and clean spend difference

Breakdown reason: Cutting tool point of a knife is damaged, not sharp; The machine tool produces resonance, place not smooth; The machine tool has creeping appearance; Treatment technology is bad.

Solution: Cutting tool wears away or damage hind is not sharp, grind a knife afresh or the cutting tool with better choice is new not smooth to knife; machine tool produces resonance or be being placed, adjust a level, lay next foundations, what machinery of fixed and smooth; produces crawl is former because procrastinate board slideway wears away fierce, guide screw ball wears away or become loose, the machine tool should notice to maintain, iron wire should be swept after commuting, add lubricating oil in time, suit the cooling fluid that workpiece machines in order to reduce attrition; choice, below the condition that can obtain other working procedure to machine a requirement, choose higher main shaft rotate speed as far as possible.

2.Workpiece produces phenomenon of taper differ in roll end diameter

Breakdown reason: The standard that the machine tool sets was not adjusted good, one tall one low, when generation places turning of not smooth; to grow an axis, contributive data is harder, cutting tool penetration of a cutting tool is deeper, cause thimble of tailstock of; of phenomenon letting a knife and main shaft different heart.

Solution: Use gradienter adjusts the level of the machine tool to spend, lay next solid groundwork, had secured the machine tool raise its tenacity; to choose sound technology and proper cutting feed to avoid cutting tool to suffer force to let knife; adjust tailstock.

3.Driver is phasic the lamp is normal, and the work measure size that treatment comes out

Breakdown reason: The machine tool procrastinates board long-term high speed moves, bring about filar lever and bearing to wear away the repetition of; tool carrier locates precision produces deviation; to procrastinate in be used for a long time board every time can accurate return treatment start, but treatment work measure still changes. This kind of phenomenon is caused by main shaft commonly, the high speed roll of main shaft makes bearing wears away serious, bring about treatment dimension to change.

Solution: Lean in tool carrier bottom with dial gauge, edit program of a fixed loop through the system at the same time, the examination procrastinates board repeat fixed position precision, adjust filar lever clearance, change bearing; repeats fixed position precision with what dial gauge checks tool carrier, adjust machinery or change tool carrier; detects with dial gauge after processing work accurate return program start, it is OK to be like, overhaul main shaft, change bearing.

4.Work measure and real measure differ a few millimeter, or some axial has very big change

Breakdown reason: The rate of fast fixed position is too rapid, drive and electric machinery response do not come; In long-term attrition loss hind pulls board silk lever and bearing mechanically to get stuck too closely dead; After tool carrier changes a knife too loose, lock up mistake of incompact; editing process, head, end does not have echo or did not cancel a knife to filled to end; Electronic gear of the system is compared or step pitch horn installs a mistake.

Solution: Rate of fast fixed position is too rapid, adjust the rate of GO appropriately, cutting is added it is normal to decrease speed and time to make driver and electric machinery are below rated running frequency working; arises after occurrence machine tool wears away procrastinate board, bearing of filar lever crane gets stuck too closely dead, criterion must readjust rehabilitate; After tool carrier changes a knife too loose a reversing time of examination tool carrier is contented, whether does the turbine worm that checks tool carrier interior wear away, clearance whether too big, whether does installation cross a pine to wait; If program reason is caused, must modify a program, ask to improve according to workpiece blueprint, choose sound treatment technology, by the statement that reflects a manual the requirement writes proper program; Whether to if discover dimension deviation checks systematic parameter too big,install reasonable, especially whether is the parameter such as electronic gear and step pitch horn destroyed, appear this phenomenon can be measured through hitting dial gauge.

5.Effect of treatment circular arc is not ideal, dimension does not reach the designated position

Breakdown reason: The jackknife of oscillatory frequency brings about resonance; Setting of parameter of treatment craft; is unreasonable, feed rate is too old, make circular arc machines clearance of lever of silk of the; that lose a condition to be caused greatly become loose or filar lever causes too closely lose a condition; Synchronous belt wears away.

Solution: Find out generation syntonic component, change its frequency, avoid resonance; to consider the treatment craft of workpiece material, ; of program of reasonable work out enters electric machinery to the pace, treatment rate F cannot have installed big; machine tool to whether be installed firm, place smooth, procrastinate board after whether wearing away, tighten too, clearance increases or tool carrier becomes loose wait for; to change synchronous belt.

6.In batch production, now and then occurrence workpiece out of tolerance

Breakdown reason: Must check tool clamping apparatus seriously, and the operation method that considers handlers, reach the dependability that holds clip, because install the dimension change that clip causes, it is OK to must improve tool to make the worker avoids to make; of phenomenon of miscarriage of justice want to learn UG process designing cursorily artificially as far as possible add small make up the QQ1139746274 that spend a heart (small letter is the same as date) numerical control system gets possibly the wave motion of outside power source or after be disturbed, automatic generation is disturbed, pass drive to cause drive to accept redundant pulse drive to electric machinery is snatched or take an appearance less.

Solution: Understanding grasps its pattern, adopt the measure of a few interference rejection as far as possible, be like: The line of the strong report cable that strong electric field disturbs and weak report signal is kept apart, the absorption that joins interference rejection capacitance and use screen line segregation, additional, whether does examination ground wire join firm, ground connection contact is the most intimate, adopt all interference rejection measure to avoid a system to suffer interference.

7.Treatment of working procedure of workpiece some line has change, other each working procedure size is exact

Breakdown reason: The parameter of this block program is reasonable, whether be inside booked contrail, whether does process designing format accord with manual requirement.

Solution: Random tooth appears when whorl block, pitch is incorrect, the periphery that associates to treatment whorl immediately is configured (coder) the objective element with this function.

8.Every working procedure of workpiece has the appearance that increase by degrees or decreases successively

Breakdown reason: The program writes parameter of wrong; system to install unreasonable; configuration to install drive disk assembly of undeserved; machinery to have the metabolic trouble with seasonal pattern.

Solution: Whether does the statement that inspection program uses press the requirement contrail that the manual sets to carry out, can be judged through hitting dial gauge, after the start that locates dial gauge in the program lets a program end, procrastinate board whether to return start position, repeat executive even if to observe its result again, master its rule; to check systematic parameter to whether be installed reasonable or be thought to alter the machine tool that; concerns configures only on parameter of join computation coupling consideration to whether accord with a requirement, part of drive of machine tool of examination of whether accurate; has pulse equivalent attaint, gear coupling is even, whether does the examination exist periodic, regularity breakdown phenomenon, if have an examination,its key gives partly eliminate.

9.The dimension change that the system causes is not stable

Breakdown reason: Systematic parameter installs voltage of unreasonable; job not to stabilize; system to suffer exterior interference, bring about a system to break pace; to already increased electric capacity, but the impedance between system and driver does not match, bring about useful signal signal transmits attaint of abnormal; system or in-house breakdown between missing; system and driver.

Solution: Speed, quicken time to whether pass big, main shaft rotate speed, cutting rate is reasonable, whether the parameter of handlers is revised bring about systematic performance to change; to add ground wire of; of equipment of outfit stabilized voltage decide reliable already join, in driver pulse output contact place adds interference rejection to absorb capacitance; to choose proper capacitance model; to check the signal jumper between system and driver to whether take screen, join is reliable, inspection system pulse produces signal to whether be lost or increase to; sends a factory maintenance or change advocate board.