How to carry out maintenance of precision presses

Every use of 1500-2000 hours to maintain conservation should perform the project: 1. Test and adjustment of lubricating oil discharge quantity and pressure detection function. 2. Air system filters, oilers to adjust the valve and other functions and water impurities check with the necessary adjustments. 3. Air pressure switch set value view and pressure detection function test and adjustment shearing machine. 4. Mold height indicator switch to view and set the value of the view and adjust the value. 5. Modular high-beam device sprocket, chain drilling equipment, drive shaft, worm and other parts with or without loose, abnormal tension and chain tension and adjustment. 6. Gear box cover removal, internal parts wear and key loosening of the view and the tank cleaning, smooth oil and the work of the new situation, noise, vibration test view. 7. Transmission system of various parts of the fuel injection point of the oil discharge and pressure test and adjustment.

 

8. Leave the brake mechanism of the piston movement, brake point of view, from the brake gap and to make the film wear test and check the necessary adjustments 3D CNC Drilling Machine. 9. Slide the guide rail and guide the gap measurement and friction surface view, if necessary, adjust the proofreading. 10. Flywheel bearings, etc. to increase the manual smooth grease and piping, connector number view. 11. Balancing the operation of the cylinder and its smooth oil system Oil, connector number test view. 12. Motor circuit and electrical operating circuit insulation resistance of the test view. 13. Machine accuracy (straightness, parallelism, induction gap, etc.) test, if necessary, adjust the proofreading. 14.Punching and inspection of the appearance and accessories of the punching machine and the foot (base) of the bolt. The tightening of the screw and the nut and the level of the nut are to be adjusted as necessary. 15 smooth to the oil system Pu, pipeline valve cleaning and maintenance and inspection. 16. Air system of pneumatic components, piping and other cleaning and maintenance action and test view.

The development history of precision punching machine

With the development of the national economy and the progress of science and technology, through various types of precision stamping die production parts factory demand straightening machine, mold technology accuracy, high efficiency, long life in the south direction. It is a comprehensive technology, so its development will inevitably involve many areas of cooperation. Must be analyzed and summarized, precision stamping die development.

At present, China is relatively mature mold technology, precision punch but still perfect from the perfect. Analysis of mold precision stamping technology development direction of the product market, multi-species, small batch, rapid change, the upgrading of new technologies such as computer technology, manufacturing technology is due to engineering design, mold design depends on the manual experience and technology Straightening Machines, the traditional mechanical supplement Said computer-aided design drill machine, numerical control processing, numerical control processing as the core of the computer aided design province manufacturing direction. At present, the main mold manufacturers are developing high efficiency, precision and mold processing equipment automation, from manual operation to the computer numerical control machinery operator requirements development.

For example: speed, composite processing technology advanced special treatment technology; precision grinding, fine processing technology; Appears in the mold manufacturing force automatic processing system, greatly reducing the production cycle, reduce manufacturing errors and improve mold quality, mold design and manufacturing process automation laid the foundation. As well as high-speed punching stamping to provide higher accuracy.

Noise Reduction Engineering of Precision Press

Reverberation time refers to the indoor sound to a stable state, precision punching sound source to stop the sound after the sound of the room in the recurrent reflection by the wall absorption, the average acoustic energy density Down to the original value of one millionth of the time. The longer the reverberation time is, the more the noise is reflected in the workshop, the slower the energy decay rate. In the same sound source, the reverberation time is longer than the reverberation time.

2, the choice of precision punching sound-absorbing material: a total of five parts sound insulation board, noise through perforated plate holes into the sound-absorbing cotton, a part of the glass wool through the vibration of energy into heat energy consumption, the other part of the outer layer of steel isolated , To share the purpose of smoking. (1) The thickness of the outer 2mm steel plate, from the noise and support role Dished Head Punching Machine, and is the sound-absorbing panel of the outer surface. (2) the middle part of the sound-absorbing panel for the sound-absorbing material, made of glass wool products, for the absorption of sound energy, noise is a major component of the material. (3) fiberboard paste in the sound-absorbing cotton outside, to prevent the sound-absorbing cotton falling. (4) Transparent film attached to the sound-absorbing cotton on both sides, since the moisture-proof and prevent sound-absorbing cotton wire from the inner perforation plate perforation in the role of the net steel punch. 3, sound-absorbing panel sealing treatment: As the entire production line closed processing is a number of small sound-absorbing panels stitched together into a closed body, so in order to ensure precision punching noise reduction effect, in the design and manufacturing need to control the various sound-absorbing panels between the Clearance, generally 1 ~ 2mm.

In order to minimize the effect of noises passing through these gaps to effect noise reduction, sealants are often used for gap seals. 4, ventilation: the operation of the heat generated by the device itself, coupled with the sound-absorbing material with glass wool insulation properties, the production line within the closed temperature is often higher than the external 3 ~ 5 ℃. In the implementation of noise reduction projects, usually in the noise ceiling installation of exhaust fans, take away the hot air enclosed space, so that the formation of negative pressure inside, the external air can flow through the noise wall inside. In the selection of exhaust fan selection of low noise fan so as not to affect the noise reduction effect. 5, the lighting treatment: the closure of the project after the implementation of the internal and external lighting equipment, cut off, so the need to increase the enclosed lighting system. In order to ensure the production and maintenance of equipment required for lighting drill machine, design illumination of 500 lumens or more. Closed body lighting system to separate wiring, independent switch, to ensure ease of use and does not affect the original power supply system. In addition, in order to prevent a sudden power outage in the enclosed body in the installation of emergency lighting system to ensure the safety of equipment and personnel.

Universal user response punch quality is not the most important price problem

To deal with the user throughout the punch analysis, it should be very simple, ordinary punch the biggest bad place in that place, that is, its quiet function, a prudent may lead to sacrifices, then, for this, pneumatic What are the benefits of punching? The following are some of the benefits of pneumatic punching.

Pneumatic punch, brake mode pneumatic syringe, the key punching power, from the motor to take the lead in the flywheel, flywheel driven crankshaft, and the momentum occurred. Safety, pneumatic punch press than the traditional safety performance in the above should be high; compact, pneumatic punch press than the traditional high precision; high and low mode compared to traditional punching machine for convenience. Speed, pneumatic punch compared to faster; pneumatic punch with a cylinder, the demand for gas, the traditional do not have; price, pneumatic punch press than the traditional price to be higher.

Ordinary punch, is the selection of traditional braking methods, more common for the clumsy key brake, the main road pressure power, driven by the motor flywheel, flywheel driven crankshaft, and the resulting momentum. Ordinary punch press, also known as press, is a more traditional stamping process of mechanical processing. Such a machine can achieve savings in energy and material, and the efficiency is relatively low compared to the pneumatic punch. The ability to manipulate the request is not high, so there are some security risks there are risks.

Punching machine is the general machinery of the stamping industry. It is suitable for punching, blanking, bending, stretching and other cold stamping (not used for pressing and printing work). It can be semi-spontaneous or fully self- Equipped with photoelectric love, can be minimized occupational damage.

Punch security by the light-emitting device, by the light, the controller, signal cables and control cables of five parts.

Light emitted by the light emitter directly to the receiver, resulting in protective light curtain. When the light curtain is obscured, the receiver generates a shading signal, the signal cable is transmitted to the controller, the controller will contain the signal to produce a control signal to control the machine brake control circuit or other building alarm installation, to achieve Machine parking or safety alarm.
Protection of the length of 0-2000mm, properly manipulated within 2 meters of the machine table or partial protection area.

Protection height due to specifications and willow, from 100mm to 1240mm are products to the case.

Difficulties of the optical axis is divided into 20mm, 30mm, 40mm three, parting force of different 30mm, 40mm, 50mm.

Precision presses on the radio-type arrangement, small and beautiful, easy to install.

The error between punch presses is caused by what factors

Die punch stamping process has a certain error, the error depends on what factors? Let us learn together:

1, the size of the gap, the average degree: deep drawing, bending, flanging and other sheet metal forming parts usually need to cut out a blank tablet, has also formed punching, cutting a single finished pieces. Homework, blanking, including common punching, cutting, dressing, etc., for each sheet metal stamping parts are necessary. So the blanking gap hedge determines the dimensional accuracy of the contour. Punch small and average blanking gap, punching punch size can be made to obtain a higher accuracy. For deep drawing, bending forming molds, such as a large gap will increase the size of the punch mouth size error and rebound. Clearance is not a common cause of increased punching burrs and uneven edges due to uneven wear.

2, the elastic deformation of punch equipment: in the stamping process, the punch load after a certain degree of elastic deformation. According to the burst pressure change and significant direction of the size of the deformation, but for stamping parts, mainly for stamping, embossing, with volume stamping flat, bump, pressure wave, broken, heading, flange, upsetting, beating, The deep throat is made in the form of workmanship in the form of stamping, a remarkable effect in its dimensional precision stamping.

3. Dimensional accuracy of the punch material, structure, dimensions and material thickness, the dimensions of the blanking gap and the decisive effect of cutting on its average degree. Different types of punching process, different materials with different thickness of the material, one of the six customs clearance, press great difference in punching accuracy. Uniform modulus m = 0,2 mm thick 34, with hole H62 brass pieces of gear in the middle of the compound stamping die, when the gap C = 0,5% ton (unilateral) Of the IT7 level, salt pieces of flat arch bending, up to 89 of the blunt verticality, 5 degrees, the surface roughness Ra value is 0,2 micron stamping size; with ordinary composite die manufacturing, the gap C = T (unilateral) 5%, the initial error of the punch, the punch of the initial precision stamping die for a T9,12 Ra value, 5 microns, 0 burr height of the rough cutting surface roughness, 10 mm; stamping die is still a continuous system , The initial punching precision IT11 blunt edge is thicker. Under normal circumstances, hot stamping material and T thickness of the main basis for selection blanking gap. Once the open punch gap is selected to determine the constant error of the planar dimensions of the body of the punch; the stiffness of the salt piece structure and the three-dimensional shape affect its accuracy.

Different types of drilling structures are different, and thus the thickness of the shared material and manufacturing precision stamping differences, press punching constant error is also different.

Punch machines industry is how to develop rapidly

In recent years, punch, in the country and the powerful exhibition activities, the Chinese machine tool “high, refined, sharp” product approach often debut in the country within the new hand industry reputation within the bird, rave reviews, which allows us to see China’s machine tool industry Of the power of induction in a series of powerful facts, but also shows that the comprehensive range and key varieties, the capital has reached the world several top.

In 2006, China’s machine tool industry for the supply of machine tools is 40 to 50 million units, of which 85,756 CNC machine tools (another NC middle and low electrical processing machine 45 million units not included), from In terms of quantity, the world is eccentric. On the varieties of machine tools, in order to meet the needs of the user industry in general, the seat is more than 3500 varieties of the public, of which more than 1,500 kinds of CNC machine tools, these figures in the world is a component.

China’s CNC machine tools is very wide variety, regardless of the needs of shopping malls car, milling, grinding, special processing, and all types of metal forming machine punch and so on. At the same time, China’s market developed rapidly, the demand is very large, the Chinese machine tool products in terms of domestic market share, the punch manufacturer is about 44.6, equipment market share of about 65%.
Punch travel is spontaneous, as long as the set trip from 13 to 38, according to their approach to manipulate it, and can be parting mold material raw materials, the mold is automatically, the ultra-easy (with travel ) Automatically adjust the value set by the mold, the pressure automatically correct, such as high-speed operation, according to the speed automatically adjust the mold high, you can locate the angle between 0-180 degrees. Twists, etc. There are a lot of peace monitoring, , Rigid, mistaken delivery, safe operation.

Do a good job flat surface drilling screw and guide the maintenance work

Screw and guide rail is a more important part of the plane drilling machine, therefore, while maintaining the plane drilling machine, can not ignore the maintenance of the screw and rail maintenance work, including the following:
Plane drilling machine 1, regular inspection, adjust the axial gap screw nut to ensure the accuracy of reverse transmission and axial stiffness.
2. Check regularly whether the connection between the screw support and the bed is loose and if the bearing is damaged.
3, the use of grease ball screws, cleaning once every six months on the screw of the old oil, replace the new grease with lubricating oil ball screw, a day before the machine work to refuel.
4, pay attention to avoid hard dust or chips into the screw shield and work during the impact of protective cover, a protective device to be replaced in a timely manner.

Advantages and Structural Features of 3D NC Drilling Machine

Three-dimensional CNC drilling machine is mainly used for large-size H-beam or box-shaped beam on three sides of the drilling process, the workpiece fixed gantry moving way of processing, with high processing efficiency, precision and stability characteristics, can be widely used in construction, bridges, .
Product advantages:
1. Workpiece fixed gantry moving way of processing, with high processing efficiency, accuracy and stability.
2. H-beam can be large-scale or box-shaped beam on the three-sided drilling.
3. Can realize CAD / CAM direct conversion, thereby eliminating the cumbersome programming and input operation. Automatic generation of processing procedures, and truly the paperless processing equipment.
4. Machine configuration of the ball screw, linear guide pairs, electrical parts, servo motors, inverter, are well-known manufacturers at home and abroad, boot failure less.
Structural features:
1, three-dimensional CNC drilling machine bed, gantry, spindle box, electrical control system, hydraulic system, cooling chip system, detection system and other components.
2, the machine using gantry mobile, table in the form of fixed, can reduce the length of the bed, saving floor space.
3, Gantry movement (X-axis) Linear roller guide, AC servo motor and low backlash rack and pinion drive.Long door crossbeam and the movement of the column (U, V, W), using linear ball guide AC servo motor and screw drive The feed motion (1, 2, 3) of each drilling head is guided by linear ball guide, AC servo motor and screw drive.
4, NC three-dimensional drilling of the spindle box using the company’s CNC feed drilling head.
5, the lower part of the machine chain flat chip conveyor, chip conveyor is equipped with water pump and cooling liquid filter circulation device.
6, the hydraulic system is mainly used for X-axis positioning and locking both sides of the balance of power head.
7, NC three-dimensional drilling machine with PLC control, and equipped with a host computer, the workpiece through the computer input and storage, easy to operate.

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