Note the use of a fixed and variable feedrates in the same program Also note

September 2, 2017 · Posted in Uncategorised · Comment 

2 Variables applied (used) :


G00 G90 G54 X3500 Y17834 S#19 M03


(VARIABLE SPINDLE SPEED)


G43 Z250 H03 M08


G01 Z-150 F2000


(FIXED FEEDRATE)


X4250 F#9


(VARIABLE FEEDRATE)


Note the use of a fixed and variable feedrates in the same program Also note that no mac ros


have been used at all Many pro gram mers do not re al ize that they may use vari ables in the main


pro gram (stan dard pro gram) only, with out a macro, pro vid ing the macro op tion is sup ported by


the con trol sys tem A com plete ex am ple of such an ap pli ca tion has al ready been shown ear lier, punch machine for Head in


Chap ter 1 – Fig ure 1, and still an other ex am ple Busway Press Clamp Machine is also in cluded in the next chap ter


Decimal Point Usage


High Speed Drilling Machine


A vari able that is de fined in the macro pro gram body must al ways be en tered with the dec i mal


point for all di men sional val ues, such as po si tion lo ca tions, dis tances, feedrates, or any other def i –


ni tions that use met ric or Eng lish units (see next sec tion) If these val ues are en tered with out the


dec i mal point, the in ter pre ta tion by the con trol will use the de fault set tings and could cause some


very se ri ous prob lems For ex am ple,


#11 = 45


may be in ter preted in nu mer ous ways, and not all will yield the same re sult The stored value of


45 may be come 450, 0045, 00045 – or re main just as de clared – 45


In pro gram ming, never count on de fault val ues !


If an in put value ac cepts the dec i mal point, al ways de clare it with the dec i mal point in cluded In


daily ap pli ca tions, typ i cal val ues that re quire dec i mal point are all val ues re lat ing to di men sions –


they are also called di men sional words or di men sional val ues It is im por tant to keep in mind that the de fault val ues may drilling tools work for you, but against you as well For ex am ple, if the X-axis co or di –


nate lo ca tion is de fined as X20, for ex am ple, in met ric sys tem it will be in ter preted as X0020, in


the Eng lish units sys tem as X00020 A significant dif fer ence!


There is also a func tion ADP (Add D

Variables may also use complex expressions

September 2, 2017 · Posted in Uncategorised · Comment 

3750 F#9 will mean G01 X3750 F3000


Variables may also use complex expressions, for ex am ple:


#i = #j + 50, where #j is a pre vi ously de fined vari able, which should be in ter preted as –


add the value of 50 to the copper busbar bending machine cur rent value of vari able con tained in #j, and store the new re sult in


vari able #i


The vari able def i ni tion #9 = 1500 in one part of the pro gram, can be used again later, usu –


ally as a sub punch machine for Head sti tuted state ment, for ex am ple, as a def i ni tion #9 = #9 * 11 in an other part of the


macro pro gram, such as a feedrate in put F#9, with the ac tual mean ing of F1650


In all ap pli ca tions, the rule for ap ply ing the vari ables is sim ple (the cur rent ex am ple is used):


+


Take the stored value of variable #9 and use it as the cur rent value of the pro grammed feedrate


When ex pres sions are used in a macro, they al ways eval u ate a mul ti ple math e mat i cal or log copper busbar bending machine i cal op er a tion Ex pres sions must be en closed in square brackets [ex pres sion]:


#i = #i * [#j + #k]


High Speed Drilling Machine


+


where the brack ets force cal cu la tion of #j+#k to be per formed first, be fore be ing mul ti plied by #i


Any com plex cal cu la tions can be nested within square brack ets, al ways fol low ing the stan dard


math e mat i cal hi er ar chy re lat ing to the or der in which cal cu la tions will be pro cessed


Usage of Variables


Macro vari ables can only be used in a pro gram if they are de fined first Once a vari able is de –


fined, it can be used by pre ced ing it with the de sired Fanuc pro gram re lated ad dress (char ac ter),


which is a cap i tal let ter of the al pha bet, such as F, S, G, M, etc


For ex am ple, the two vari ables de fined ear lier can be used in the body of a pro gram:


Copyright 2005, Industrial Press Inc, New York, NY – wwwindustrialpresscom


FANUC CNC Custom Macros


CONCEPT OF VARIABLES


87


2 Variables declared (defined) :


#19 = 1200


Spindle speed defined


#9 = 1500


Cutting feedrate


Vari ables must be de clared (de fined) be fore they can be used, as the ex am ple shows

For all dimensional words used in a CNC program

September 2, 2017 · Posted in Uncategorised · Comment 

ec i mal Point) avail able and de scribed else where, but not


recommended even by Fanuc as the best so lu tion to solve dec i mal point woes


Copyright 2005, Industrial Press Inc, New York, NY – wwwindustrialpresscom


FANUC CNC Custom Macros


88


Chapter 7


Metric and English Units


For all dimensional words used in a CNC program (such as X, Y, Z, I, J, K, R, F, etc), the de –


clared vari ables may be ref er enced with the ap pro pri ate di men sional word, for ex am ple:


#1 = 116348


Variable is declared or defined


G00 X#1


Variable is used


drilling Machine


If the se lected units in the pro gram are Eng lish units (pro grammed in the Busway Press Clamp Machine G20 mode), the mo –


tion block G00 X#1 will be in ter preted as G00 X116348 If the pro gram ming units are met ric


(pro grammed in the G21 mode), the G00 X#1 will be in ter preted as G00 X11635 This is a


very im por tant dif fer ence A vari able that is called in the macro will be au to mat i cally rounded to


the least in cre ment custom processing machine (small est unit) of the pro gram ad dress


Least Increment


All CNC pro grams can use val ues within an al lowed range – up to a cer tain max i mum, and


down to a cer tain min i mum Max i mum val ues are sel dom an is sue, but ev ery pro gram mer should


un der stand the min i mum val ues They are of ten called the min i mum in cre ment or the least in cre –


ment These fancy ex pres sions can be trans lated to a much more prac ti cal state ment – the small est


amount of mo tion the ma chine can pro vide Re gard less of how they are called, they are dis tin –


guished by the num ber of dec i mal places:


Units system


Number of decimal places


Least increment


Metric


G21


3


xxxxxxxx


0001 mm


English


G20


4


xxxxxxxx


00001 inch


Bear in mind that as a rule, many Fanuc con drilling tools trols do not con vert from one unit of mea sure ment


to an other, only shift the dec i mal point Some fea tures in the con trol may be con verted, but never


count on such con ver sion in any pro gram de vel op ment If the dec i mal point is only shifted dur ing


units change, an Eng li

the vari able num ber – for example:

September 2, 2017 · Posted in Uncategorised · Comment 

the vari able num ber – for example:


#19 = 1200


Value of 1200 is assigned to variable number 19


it can be spindle speed (rev/min)


#9 = 1500


Value of 1500 is assigned to variable number 9


it can be feedrate (mm/min, m/min, ft/min, in/min, etc)


These two macro state ments store val ues – the value of 1200 is stored into the vari able #19 and


the value of 1500 into the vari able #9 Both val ues shown in the ex am ple are num bers, but they


are two dif fer ent types of a num ber


Real Num bers and Integers


There are two ba sic types of nu merical val ues used in punch machine for Head macros – a num ber can be ei ther:


u


High Speed Drilling Machine


REAL number


real number always requires a decimal point


u


INTEGER number


integer numbers cannot use decimal point


When per form ing math e mat i cal cal cu la tions, the type of every nu mer i cal value is im por tant In sim ple drilling steel terms, real num bers are typ i cally used for cal cu la tions, whereby in te ger num bers are used


for count ing and other ap pli ca tions that do not re quire a dec i mal point When a vari able num ber is


used in the macro pro gram, its value can be changed as re quired at any time, two or more vari –


ables may be used for math e mat i cal cal cu la tions, etc


Copyright 2005, Industrial Press Inc, New York, NY – wwwindustrialpresscom


FANUC CNC Custom Macros


86


Chapter 7


Variable as an laser cutting Expression


Vari ables can also be de fined by us ing an ex pres sion, where the ex pres sion is typ i cally a math e –


mat i cal for mula or a gen eral cal cu la tion The sim plest ex pres sion is nor mally a di rect value as –


sign ment within the macro body, for ex am ple:


#9 = 2500


Vari able #9 in the ex am ple con tains an as signed value of 2500 mm This ac tual value may be


used to re place a vari able value in the macro, for ex am ple, the cut ting feedrate:


G01 X3750 F#9


The F#9 macro state ment will be in ter preted as F2500 (mm/min) ac tual state ment Re def i ni –


tion of the vari able, for ex am ple #9=3000, will pass on the new def i ni tion to the macro body, so

ain val ues that can – and do – change

September 2, 2017 · Posted in Uncategorised · Comment 

ain val ues that can – and do – change


with each macro use For ex am ple, in stan dard pro gram ming, a macro may be used for re peat ing


the same toolpath for dif fer ent ma te ri als of the part Al though the toolpath it self may not change,


the spin dle speeds and the feedrates will be dif fer ent for each ma te rial For three ma te ri als, for ex –


am ple, three in di vid ual and sep a rate pro grams with many rep e ti tions would have to be writ ten


Copyright 2005, Industrial Press Inc, New York, NY –


FANUC CNC Custom Macros


CONCEPT OF VARIABLES


85


Quite likely, the only dif fer ence be tween Busway Press Clamp Machine the three pro grams will be the S-ad dress for spin dle


speed in rev/min and the F-ad dress for feedrate value in mm/min (in/min) With a macro, both ad –


dresses S and F can be de fined as vari ables (be cause they will change for each of the three ma te ri –


als), then sup ply the suit able speed and feedrate val ues for dif fer custom processing machine ent ma te ri als, as needed By


chang ing only those two val ues, the pro gram can be used for many more dif fer ent ma te ri als, not


just three The main pro gram ming ben e fit is that the body of the macro pro gram does not change


at all, once it is ver i fied


drilling Machine


Variable Declaration


Be fore they can be used, vari ables have to be de fined – macro ex pres sion re fers to this ac tiv ity


as dec la ra tion of vari ables – vari ables have to be de clared Just like the data en try into the mem ory of a cal cu la tor, the ba sic rules gov ern ing the dec la ra tion of vari ables is that a vari able must be de –


fined first, and only then it can be used in a pro gram or a macro In the pro gram that uses the vari –


able, the form of def i ni tion is rep re sented by the # sym drilling tools bol (com monly called the pound sign or the sharp sign or the num ber sign) This num ber sign will be used in all mac ros The def i ni tion of a


vari able can take sev eral forms, the first of them is the vari able value:


#i = assigned current value


+


where the let ter ‘i’ represents

Application of Damping Hole Half – bridge in Variable – load – sensitive Pump Control

February 6, 2017 · Posted in Uncategorised · Comment 

Application of Damping Hole Half – bridge in Variable – load – sensitive Pump Control

Pressure control valve principle chart [1]

Pressure control valve principle chart [1]

1, three schematics triggered thinking
Damping holes are widely used in hydraulic systems, of course, do not miss the pump control valve. Small damping holes in different occasions to play a different role: stable pressure; slow shock; delay response and so on. But with the realization of the pressure flow control function of the three pump control Drilling Machine for Sieve Plate valve schematic diagram, causing a small series of i interest. Interested to Xiaobian: from Parker, Rexroth and Danfoss control valves are load-sensitive and pressure cut off (compensation) function, but the location of the orifice layout has its own characteristics.

P2 Pump L1 Control Valve Schematic [2]

P2 Pump L1 Control Valve Schematic [2]

Rexroth A10VO Pump DFR Control Valve Schematic [3]

Rexroth A10VO Pump DFR Control Valve Schematic [3]

Danfoss S45 Pump LS Control Valve Schematic [4]

Danfoss S45 Pump LS Control Valve Schematic [4]

From the above schematic, it can be seen that Parker and Rexroth control valves are in the form of independent dampers (A and B in the diagram), and Danfoss’ dampers (A and B) are integrated into the control spool. Although the design is different, but the final realization of the pressure and flow control tube punching machine, it shows that the three schematics in the A, B damping holes follow the same basic principles?
2, structure vs. principle
Before we get to the basics, it may be helpful to discuss how each of these schematics is implemented in a different structure, perhaps to help us understand how it cnc drilling machine works.

Parker P2 pump pressure control valve structure diagram [5]

Parker P2 pump pressure control valve structure diagram [5]

Parker’s pressure-control valves mount the damping hole A by increasing the parallel bypass. 【I small series as the collection of materials is limited, can not find the right pressure and flow control valve structure diagram】

Rexroth A10VO pump DFR control valve structure [6]

Rexroth A10VO pump DFR control valve structure [6]

Rexroth A, B damping holes are processed in the same damping plug, the left and right side of the thin-walled holes corresponding to the schematic of the B-damping and A damping.

Danfoss S45 pump LS control valve structure diagram [4]

Danfoss S45 pump LS control valve structure diagram [4]

Danfoss A, B damping is not through the additional form of damping holes to achieve, but through the special processing of the spool shoulder to achieve the role of damping holes. This design reduces the type of parts, more simple.
3, the principle behind the schematic
In a lot of information, we can see some explanations of the above-mentioned damping holes, but mainly focus on the structure size and the role of the introduction, but rarely mentioned behind the theory CNC Angle Line. In this issue i small series to Parker’s pressure control valve, for example, to summarize the principle behind the schematic. The pump control system is simplified, you can abstract the structure diagram is as follows:

Parker with pressure control valve pump structure diagram [1]

Parker with pressure control valve pump structure diagram [1]

Through analysis of the above structural principle diagram, it is not difficult to find that the valve port controlled between the valve core and the valve hole is essentially a variable damping, and the DB fixed damping of the rear end together forms the C type hydraulic half-bridge. P0 is the input pressure of the C-type hydraulic half-bridge, PA is the output pressure side, used to change the servo piston chamber pressure, thus controlling the servo piston movement.
Pump of any control, and ultimately to change the pump swashplate angle to achieve their own control purposes, and the servo cavity pressure is an important factor to change the angle of the swashplate. Effective control of the servo chamber pressure has become the design of the points.

C-type hydraulic half-bridge structure of the pressure control valve pump diagram [1]

C-type hydraulic half-bridge structure of the pressure control valve pump diagram [1]

Based on the diagram of the pressure control valve and related dimensions, the sensitivity parameter of the spool can be obtained: Sx = Av / Cv Av – spool cavity area; Cv – spring stiffness. That is, the change in the unit pressure P0 caused by the displacement of the valve core [1].

C-type hydraulic half-bridge dimensionless pressure curve [1]

C-type hydraulic half-bridge dimensionless pressure curve [1]

Based on the C-type half-bridge dimensionless pressure curve, it can be seen that the slope of the curve at 0.25P0 is the largest, that is, the pressure gain E0 is maximum. At this point the servo chamber pressure changes the most sensitive [1]. According to the structural parameters of a control valve, you can calculate:
Sx = 0.0162 mm / bar
E0 ≈ 1300 bar / mm [at P0 = 200 bar]
A change in outlet pressure P0 of 1 bar results in a change in servo-chamber pressure PA of 21 bar [1] at K = 21 bar / bar [at P0 = 200 bar].
4, hydraulic half-bridge
In addition to the C-type hydraulic half-bridge, there are A-and B-type half-bridge structure. The main difference is that A-type half-bridge on both sides are variable damping structure; B-type is the C-type image, the input damping is a fixed damping structure.
A-type half-bridge has good symmetry, high linearity and gain a little bit, but to control the bilateral axial dimensional accuracy, process requirements are higher; B / C half-bridge gain moderate, large margin, Lower requirements, so this is why such a half-bridge structure commonly used in a variety of control valve reasons [7].

A-type and B-type hydraulic half-bridge structure principle [1]

A-type and B-type hydraulic half-bridge structure principle [1]

Scientists release take care of laser detectors hot air balloon looking for extraterrestrial life

January 24, 2017 · Posted in Uncategorised · Comment 

The PAMSS detector is arranged in a test room for calibration. PAMSS and a toaster almost as big, can detect the amount of trace gas. Beijing, March 11, according to foreign media reports, scientists have a hot air balloon to fly to the Earth’s high-altitude atmosphere high speed drill, the balloon equipped with a detector, you can detect traces of extraterrestrial life. The Planetary Atmospheric Microscope Sensor (PAMSS), which spanned an hour at an altitude of 105,000 feet above the ground, was then safely grounded with a parachute. The probe, which was developed by NASA and researchers at the University of Central Florida, will be sent to other planets in the future, and the goal of the launch is to test the detectors afterwards. technical knowledge Planetary Atmospheric Microscope detector can detect the concentration of only one millionth of the gas, more than the current technology has been much more active iron worker tools, so you can find other planets on the life traces, even if only a small amount of methane on a planet, There may also be life on this planet, methane is the life of these differentiated inorganic matter occurs.

 

This project is marked by Robert. ‘Our detectors have the power to detect very low concentrations of gas in the atmosphere,’ said Pierre Peale, a physicist at the University of Central Florida. ‘Some of the gases, including methane, are a by-product of metabolization of living organisms. Is low. ‘ Pierre and his team on Sunday in Tucson, Arizona, the detector will be launched, the detector is the use of salt, the size of the infrared laser. The probe and the toaster almost the same, using a technique called ‘cavity laser absorption spectrum’ technology, can detect a trace of gas. Most of the current use of atmospheric detectors are helpless to detect traces of steam and gas. However, NASA hopes to use PAMSS to detect trace amounts of methane on other planets, including Mars, Jupiter’s satellite Europa and Saturn’s moon Enceladus. Scientists have previously detected low concentrations of methane on Mars, and other ‘hot spots’ have been discovered, and scientists believe that these ‘hot spots’ may contain high concentrations of methane. At the moment scientists hope to be more close to the detection of these areas, expect the life of Mars is still alive. The hot air balloon long test goal is to confirm that PAMSS can be in space near the low pressure and very low temperature premise can be general things. Since the temperature of the stratosphere is as low as minus 75 degrees Fahrenheit (minus 59 degrees Celsius). However, the team believes that this detector can also be used on Earth to help detect changes in the ozone layer. But also for respiratory testing, by detecting the gas exhaled to help diagnose the disease. ‘The balloon was flying at 105,000 feet for more than an hour,’ he said. ‘The balloon was flying at an altitude of 105,000 feet, and the expected target was achieved, and the detector descended to the ground safely with the parachute. A bit of data, we expect the appropriate.To analyze all the data is also necessary to some time.

 

Relevant knowledge Is there any extraterrestrial life in the Earth’s atmosphere? Scientific ancestral propaganda advocated in the atmosphere of the earth found evidence of high altitude, confirmed that there may be from the alien life. Researchers at the University of Sheffield and the University of Buckingham claimed that they had collected some samples in the stratosphere 16 miles from the ground, with microcosmic bodies. Using high-altitude hot-air balloons, the scientists collected samples of dust and debris from high-profile airspace, claiming to have found fragments of unicellular algae called diatoms in these samples. They think this may be the beginning of the evidence, you can comment on how alien life is to reach the Earth, perhaps the life is meteorite care came to Earth. This was not the first time in the atmosphere to find life, and raw materials in the sky is simply full of micro-life. In 2012, NASA scientists discovered 314 different bacteria in the Atlantic and the United States over five miles of the atmosphere. The bacteria count for 20 percent of the particles they collect, and scientists conclude that the bacteria are aerated into the upper atmosphere plate beveling machine.

Punch Model | Precision Punch wholesale

December 26, 2016 · Posted in Uncategorised · Comment 

Punch Model | Precision Punch wholesale | Dongguan Pneumatic Punch professional production plant How to determine the cause of the error? In this case, Here refers to the error refers to the completion of cutting to get the workpiece and the expected value of the gap. This gap may come from machine tool accuracy, possibly from material deformation, possibly from computational errors, or from machine tool control errors. Clear the reasons it is possible to eliminate errors. In this case, 1, the calculation error: This is a human reason, can be verified, can prove, but also can be found early. Intermediate calculation of the premature rounding, repeated use of a number of digits is not enough irrational number (such as multi-tooth), the decimal system and degree of confusion and so on. In this case, 2, punch control error: the frequency of occurrence is very small, because today’s machine control system is well-tested, the technology is mature.

Man-made errors it will refuse to accept, it can also be accepted down in the pre-processing check or return to zero check CNC Movement Drilling machine. The zero return check for accumulated errors due to multiple rotations can also be found. In this case, 3, punch accuracy: This usually refers to mechanical precision, is the actual value and the theoretical value of that difference. The most direct cause of this difference is the hysteresis and straightness, verticality. This difference should be in the range of 0 welding automation.005 ~ 0.02mm, this value can be measured, can be adjusted, on the current machine tool structure, to make this error is controlled in the following 0.02mm is easy, but to 0.005 The following is very difficult. In this case, 4, the material deformation: As long as there are good operating habits, calculated to complete the rehearsal, the input is over to check, to start before school zero, hand wheel scale to check. He did not calculate the wrong punch is not wrong should have sufficient grasp of the remaining is the deformation, but the deformation of the causes and ways to overcome to carefully pondering best mill drill.

Pressing groove mold for press press Pressing groove mold for press press

December 26, 2016 · Posted in Uncategorised · Comment 

In this case, Pressure groove mold structure. Punching work will be blanking punching blanks with positioning pins 8 in the die, the first punch down into the first blank mold frame, punch inherited down, because the rough inner and outer circles are concave Mold constraints, rough in the hydraulic press under the enormous pressure (450kN), high-speed punching material plastic deformation. Three convex groove on the punch presses the blank to extrude three grooves in the hydraulic press drilling boring machine, the groove depth is about 1mm. Limit block 3 to avoid the pressure groove is too deep, can be determined by the trial mode block height. Punch pressure to the bottom dead after the uplink, when the air cushion through the ejector bar, ejector plate to the top of the blank. In this case, 3 pieces of circular grooves have high precision, the original CNC cutting machine, cutting difficult, long processing cycle, manufacturing costs are also high, is the use of cold extrusion processing Welding adjustable stand, can improve labor efficiency drilling tools, reduce labor intensity , But must have a reasonable punch press die structure and accurate process guarantee.

45-ton punch quotes angle punch machine

December 26, 2016 · Posted in Uncategorised · Comment 

Punch manufacturers, Huizhou punch, Huizhou 45 tons punch offer (15T-500T) cnc machinery sales, and has a large and a large number of CNC machining equipment CNC Drilling Machine, the precision testing equipment, and a full set of physical and chemical facilities, and other advanced quality control methods to achieve the ERP (ERP), the production of high-precision CNC machine tools, , PDM, CAM and other enterprise information engineering, with rapid response to market demand resilience. Huizhou 45-ton punch quotes angle punch machine, please click on contact us.

Next Page »