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Analysis of punch press noise sources

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The collision noise and the subsequent material fracture sound can be measured separately, and this measurement method has been implemented. In the same punch, punching thick, hard material than the punching thin, soft material noise. For thick ductile sheets, the impact noise is the same as the fracture sound. In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case steel structural drilling machine, In this case, In this case, In this case, In this case, In this case, In this case, Second, no-load noise In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, In this case, Motor noise. As a power source, the noise generated when the motor work, including motor windings of electromagnetic noise, aerodynamic noise and mechanical noise. Sound pressure level of motor noise and motor power, speed and so on. Motor electromagnetic noise, mainly by the interaction of alternating electromagnetic field excitation of the rotor and stator vibration generated. Electromagnetic noise is generally high-frequency noise. The aerodynamic noise of the motor is mainly the cooling fan noise, which is the main noise source for a considerable number of motors. Mechanical noise mainly consists of some rotating parts of the unbalanced force excitation of noise and vibration generated when some parts of the noise.

Reduce the deviation coefficient of the punching machine operation

Reduce the deviation coefficient of the punching machine operation, it is advantageous to save the resources In the high-speed rough punch, due to the axis of each axis feed drive chain on the reverse part of the dead zone girth welding machine, the mechanical movement of the vice-backlash of the existence of such harm, the coordinate axis in the forward movement by the reverse Movement constitutes a reverse fault. For the use of semi-closed-loop servo system of high-speed rough punch, reverse the existence of defects will affect the positioning accuracy of the machine and re-positioning accuracy, thus affecting the accuracy of the product. At that time the punch industry is not only high-speed punch to high-speed production for the roughness of the punch processing has a very high demand in the production of high-speed punch when we how to control the roughness of the higher it? High-speed rough punch seat specification usually refers to the reverse axis of the CNC axis and positioning accuracy.

As China’s rapid economic progress, high-speed rough punch as a new generation of machine tools, machinery manufacturing has been lost in the extensive use of rough processing skills and the rapid processing of precision parts from time to time on the accuracy of high-speed rough punch is also proposed higher requirement. Although the user in the purchase of high-speed rough punch, the machine is very important to the seat precision, rated accuracy of the axis positioning accuracy and re-positioning. But what about the accuracy of these high-speed coarse presses? Current high-speed rough punch seat accuracy of the inspection is usually used in international norms ISO230-2 or national standard GB10931-89 and so on drill machine online. Opposite sets of machine tools, because of the different specifications, the loss of the seat accuracy is not the opposite, so in determining the accuracy of high-speed rough punch accuracy, but also pay attention to its use of the specification welding machine for plate. Precision Punch Rough punch seat specification usually refers to the reverse axis of the CNC axis and positioning accuracy. The determination and compensation of both are the necessary way to improve the machining accuracy.

producing precision drill machine brands, high-speed series

Punch, precision presses, punch repair, pneumatic punch Taiwan IPM company specializes in producing precision drill machine brands, high-speed series of punch (15T-500T), and has a large and a large number of CNC machining equipment, precision testing equipment, and a full set of physical and chemical facilities and other advanced quality control methods to achieve ERP drill angle iron, PDM, CAM and other enterprise information engineering high speed drill, with rapid response to market demand resilience. Shenzhen IPM Precision Machinery Co., Ltd

There are two main characteristics of a punch gantry welding machine

Punch, the latest pneumatic press, 80 tons punch There are two main characteristics of a punch gantry welding machine, one is rigid, which includes the longitudinal stiffness of the slider and table arch and the elastic elongation of the frame; and lateral stiffness under the influence of the eccentric load of the horizontal displacement of the slider. The second is the movement of the slider characteristics, including the vertical, parallelism, straightness, etc., have a great impact on the accuracy of the product. In terms of the elements of the pneumatic punch, the accuracy of the thickness direction of the product is related to the longitudinal rigidity, while the deviation angle punch, bending or parallelism is related to the transverse rigidity and the characteristic of the motion curve. IPM supply 80 tons of presses, please call to discuss: copper bar bending machine

Extended bearing life plan

A. Before commissioning the punch, first check the number of parts, check the parts of the processing surface and thread in the loading and unloading caused damage and removal. B. Punching the installation to the fixed contact surface coated with dry oil, in the active surface coated with thin oil. In particular, after bearing installation, be sure to tilt the outer ring coated with lubricant bearings. C. Bearing lubricant coating is also very particular about the application of grease lubrication cover all the roller surface, after finishing the outer ring position recovery, also need to cover with plastic film dust. D. Daily use of the punch should pay attention to cleaning bearings, first bearing into the oil, and then brush the surface of the bearing to the brush off the dirt, and then the appropriate oil heating, and then on the bearing ball and loopholes in detail Cleaning. E. Precision punch work for some time, to conduct regular inspections.


Remove the bearing, if the bearing wear is relatively small drill machine, can be turned on the lathe to achieve the correct geometry. Also pay attention to the eccentric shaft and bearing pads and the gap between the spindle and the bearing pad, if more than 1.5 times, should be replaced or padded adjustment H-beam Steel Processing Machine. Daily Care: After starting the main motor check three kinds of pressure without exception; Cylinder pressure, the provisions of the range is 5 ~ 6kg / cm2; Lock gas supply pressure, the provisions of the range is 4 ~ 5kg / cm2; Lubrication pressure, the specified range is 2 ~ 4kg / cm2. When the main motor starts, check the flywheel condition: Note that the V-belt vibrates when the flywheel starts china drill machine, accelerates, vibrates, and sounds for more than 5 seconds.

Small Precision Universal Punch machine

The MAX-40 is a 40-ton type ‘MAX-40’ for small precision universal presses drill angle iron. The guideways are housed in the rack, and the sliding column is extended from the upper part of the slider to the center of the slider. The price is 4.3 million yen. This machine has the following characteristics.

(1) officially equipped with hydraulic overload protection device, automatic shutdown when overloaded. (2) according to the height of the stamping part of the mold to adjust the electric section! Section, the electric hole section with Huan child height meter. (3) all the structure contained in the rack, good sealing sheet metal hole punch, low noise. (4) in the precision press machine set the control side of the electrical sweep. Compressed air and cam box drilling machine suppliers.

Pneumatic punching clutch brake precision punch press brake

Pneumatic punching clutch brake precision punching brake, the main road pressure motor power to encourage the flywheel, flywheel drive crankshaft, and thrust, so the practice of operation, stable, clean air is to ensure the stability of precision punching the foundation Steel structure machine. In the actual placement process, the air valve block is the first source to connect the punch air pressure piping and the natural gas pipeline to the air supply and 0.5-0.7 shrinkage, with particular attention to the punch air pressure pipe must be connected from the reverse of the punch pipe, 1/2) of my air, as shown in the table below, the air pressure is 5 kg / m2. But installed from the air source isolation state must be 5 meters.

After the connection is completed Tapping Machine, first of all, the trial part of the air out of the tube, the punch check whether the accumulation of dust pollution emissions, this is not contempt, not clean water, air, will cause the punch solenoid valve, the wrong action tube rust, easy excitement punch safety ACCIDENT. Then, the main valve is switched, and the air inlet is provided in the connection. Note: The consumption of air per minute refers to the intermittent consumption of air (1) Punch clutch hydraulic hole punch machine. (2) in order to ensure the punching performance of the press security and stability, press the pressure relay, the pressure is lower than 0.4, the punch can not start. In the punch of the purchase of many customers, our city trial punch interpretation of the Japanese standard-level accuracy of the results mean what is the detailed test of the project, is it the actual stamping production accuracy in order to solve this problem, we come here to our customers in detail Reply: In high-speed press punching production, punch accuracy is very important. The accuracy of the punch directly affects the life of stamping products, precision molds.

Punch accuracy is actually divided into static punch presses that are not affected by the accuracy of the load when the load is accurate with the message (stamping). Dynamic accuracy High speed punching Punching production is very important because the punch is useful and the actual load varies greatly, so the development of lattice has the difficulty of the ability, so it is not complete development, accuracy and accuracy of the punch press representation of the static. Punch is a set of mold use, processing operations need to do this group of mold to do the related movement. The relationship between the punching process is the right punch accuracy, the main table punch accuracy today: one, parallelism, verticality, two, three, the total time interval. Movement between the mold is not correct, in addition to depressed product accuracy and shorten the life expectancy, can also lead to mold assembly difficult, not the use of precision molds, and can produce serious impact noise.

The Function and Balancing Point Setting of Pneumatic Punch Balancer

Precision Punch The workpiece coordinate setting is used to determine the geometry, location, and coordinate system created by the tool relative to the workpiece movement for each geometric element (point, line, and arc) on the workpiece geometry during NC programming and operation. To ensure uniformity of programming and punching operations CNC Movement Drilling machine, the right-handed Cartesian coordinate system is usually used in the workpiece coordinate system.

When the workpiece is clamped onto the punch press, it is necessary to ensure that the workpiece coordinate system is in the same direction as the coordinate axis of the punch coordinate system. Precision Punch The origin of the workpiece coordinate system is the workpiece origin, or workpiece zero. The origin of the workpiece in the position of the workpiece can be arbitrarily chosen, but the best part of the workpiece on the workpiece map size can be easily converted into coordinates of the place. When machining a workpiece on a CNC precision punch, the workpiece origin is usually set to the right end (or left end) of the workpiece on the spindle axis. In the numerical control system of the constant punching machine, G54 ~ G59 are used to set 6 workpiece coordinate systems, and the functions of the 6 workpiece coordinate systems are the same.

When the workpiece coordinate system is set with G54 to G59, the workpiece is mounted on the punch with the jig and the coordinate value of the zero point of the workpiece coordinate system in the coordinate system of the workpiece is measured (the distance between the workpiece zero point and the punch origin) And store the coordinate value (offset value) in the corresponding parameter of NC system coordinate offset screen custom metal fabrication, and then use the commands G54 ~ G59 to program. In the process of workpiece origin offset can be automatically added to the workpiece coordinate system, so that the CNC system can press the coordinate system to determine the processing of the absolute coordinates. Therefore, the programmer can not consider the workpiece in the punch on the actual installation location and installation accuracy Chamfering Machine, and the use of CNC system, the origin of the offset function, offset by the workpiece origin to compensate for the workpiece on the table position error. Now most of the CNC punch has this feature, easy to use.

what is Punch noise solution?

Punching noise problems can be divided into no-load noise and load noise. No-load no-load operation noise Punch noise, it is the motor noise, the separation of labor organizations, the outbreak of block noise, clutch and gear impact noise. Load noise is an increase in noise punching, punching, selection (such as punching, drawing, bending) processing different punching process and noise exist in the open punch press.

First, no-load noise

1 Clutch noise. While away from the closing device punch at the same time, a lot of the whole county “Ding Dong” sound. This is the centrifugal force that the connecting rod slider reverses the material in the inertia force and the crankshaft is exposed to the sound of collision rejection. Habits: Clutch contact impulse size of the state of the clutch noise, material conditions determine the level of hit rate; the stiffness and damping of the character are also related to the war-related material. Clutch rigidity and failure of the two, in the middle and small tonnage punch high noise, the most widely used type of key to pass the noise of the lover, is a series of effects of incitement.

2 things the noise of the unit interval. Three punch and vice president of the crank slider body: crankshaft journal and crank bearing crank bearing big end bearing; (ball head); connecting rod small end and sliding ball head seat. Because the absurdities of establishing and plotting are inevitable, the fulcrum into which they are arrested retains a gap. Each movement between them, from the transition to liberalization of the fire, will inevitably bring a strong impact, broadband noise, high-frequency unilateral strong. The greater the gap, the higher the noise. Of the gap, the break, the slider to chat with a higher signal to noise ratio, to promote.

3 motor noise. As a power supply, the noise generated by the electromagnetic noise is the work of motor noise and mechanical noise of the atmospheric energy of the motor winding. Sound pressure level Motor noise and motor power speed, speed coherence. Motor electromagnetic noise, mainly through the alternating electromagnetic field to encourage mutual infection of the rotor and stator vibration occurs. High – frequency noise electromagnetic noise. Pneumatic noise of the main motor If the cooling fan noise, and the motor is a lot of transactions, cooling fan noise has begun to noise source. Dementia with little noise in the emergency command by rotating the lame nonuniform force components into the noise and vibration part when mitigating

Two, load noise

Wang Renyu load running noise source is stamping tool and workpiece or stripping plate and the impact of the gap between the process of torsion damage and punch. Punching process and punching shear torsion impact maximum noise

1 stamping noise. Punch process separation, leaving a lot of noise. Than the noise, attracted a large number of imposition of sheet metal stamping and embossing, pressure wave, flanging, twists and turns, noise small drawing process.

Torsional shot noise. Similar to the punch press, the hammer noise and punching plate thickness, hardness, and more, hammer speed parts, mold clearance state, such as coherent, increase the noise with these values. Punch work, punch and blank, blank and stripper plate collision attack is extremely strong, with the impact of the impact of increased speed of sound, as shown in Figure 1. The acoustic noise of the material and the self-collision can be far away from the measurement after the measurement has been put into practice. In the punch thick, hard material mediation, blanking Blanking noise is thinner, soft material professional. The punching process handles the sheet thickness ductility, the similar size and the arrival of the impact noise.

Impact of Punching Abrasive Tool on Service Life of Press

Punch mold can be divided into single mold works, compound mold, mold three kinds according to the authorities to continue. Need more of the first two people are not compatible with the economic function, always die can be the result of high accumulation. Communications, control and continue to die at high speed, and you produce the product (including all the products processed with a punch, Foxconn Group has terminals, computer cases and connectors used in hardware and the current mobile phone parts, etc.). Prepared for gradual death should pay attention to the polarization between the weight of the module, the precision of machining parts, accuracy, precision matching group to establish punch and participate in the topic, combined with mold production target.

Punch thinking mode to see:

Punch die in the structure can be divided into two cases: a limit (1). (2) common parts. Changes in the product. A total of part of the standards or norms, according to the gap between the finished product and the reform is normal.

The composition and the two. Template specification:

1 template composition

The composition of the press tooling will vary depending on the type and composition of the mold, the sequence, the type of traps, and the top-down physical layout. The former is the key to constructing the most frequently used, the latter structure or the extra deep drawing die.

The main work of this paper is:

(1) digital mapping – the three-dimensional products and mold models and two-dimensional engineering drawings, to change the traditional treatment;

(2) the digital bed model – the product of the mold and the product of the association hope to be born, the mold of the three – dimensional solid model;

Digital simulation (3) die – to clarify the product of the forming process analysis, terms, understand the structure of the mold parts of the thermal decomposition table, drowsiness hands and feet mold;

(4) product formation process imitation – injection molding, punch;

(5) custom sound company mold set its order and standard adjustment;

(6) mold production and processing.

Specification 2 of the mold

. The size of the mold and the locking screw

The template size should be larger than the taskbar and select a typical template size. The template locking screw shows the relationship between mold size and mold size. The most frequently manipulated tooling locking screws are based on the four corners of the case and can be used in geo-paradigm behavior. The long letter series of molds most frequently used locking screws in four corners to create and center the center of gravity.

(1). template

The overall correlation structure, the template thickness choice and the mold punch processing type, the punch cutting force, the punch processing precision and so on. According to the thickness of the mold to determine the appearance of the revelation is heavy, the experience gained and the strategy to use the appropriate template thickness usually, although not uniform, height and clamping height of the mold standard, simple procurement and inventory management.

Template four:

The main template for the continuous punching fixed plate, platen, the mother template, etc., according to precision machining, punch products, to convince the eel processing mold production, to provide assistance, if the following three mold repair steps: (2) 1) yoke, (2) insertion.

1 piece style

A block template is also known as a structure type, and air must be turned off for processing. The overall template for the purely structural or precision molds is mainly high, cutting the main template (3) processing methods to receive the thermal action must be wire-cut processing or EDM and grinding. The length of the template size is good (no heat treatment) will select two or more types and.

2 yoke type

Yoke-type template to remove the central groove-type block product assembly. With the operation of the volts under the construction, the groove is also composed of templates. The yoke template structure price: ditch easy processing, ditch processing precision width can transform, well and so on. But low rigidity optimization finds losses.