CNC Knowledge: The cause and countermeasures of the room surface wave motif during treatment during treatment

summary:Surface ripples are common problems in the process of processing horizontal towers. The article analyzes the causes of the undulations on the surface of the room during the treatment of the chamber tour and offers corresponding treatment solutions for reference for relevant personnel.

Keywords:Circular table; Part processing;

Once the sleeper tour is used for a long time, it is easy to reveal the undulations in the outdoor area of ​​the room or the final surface due to the impact of various factors. For example: the wavelets on the surface of certain parts are in the shape of a spiral, and the ripples on the surface of the surface of the room are disorderly and cannot be found. are vertical with the axis of the room, and the wave patterns on the surface of certain rooms and the room of the room in the room The axis is parallel. Analysis of the undulations of external circles or final surfaces of these parts can be found, and the reasons for the formation of undulations are different. However, any cause of the outside circle or the final surface of the part will affect the quality and use of the performance of the part. Consequently, the cause of the room wave model must be analyzed and targeted treatment measures must be taken.

1. Analysis of the cause of the surface line of the part during treatment during treatment

1.1 The cause of the ripple equivalent

During the treatment of the round of the room, it is often seen that the circular ripples appear in the room, which is vertical and the distance from the axis of the room. If the staff uses a marked pen and makes a brand on the room, the same brand can be seen in the axial direction, at each distance. Consequently, the difference in height between the undulations and the height of the undulations and the valley is very large, resulting in the production of equivalent wave models is mainly linked to the following three factors.

(1) The slide will be vertical exercise on the guidance rail of the bed, but due to the influence of the transmission parts of the horizontal tower, the sliding plate exerts in the upper and lower directions in a certain cycle of exercise exercise or left and right directions. The trajectory will be left outside the room.

(2) If the period of use of the sleeper tower is long, dental bands, gears and other components will bring to various degrees of wear, then the treatment of treatment or the corresponding coordination accuracy will gradually decrease, so that The workpiece has equal ripple distance. For example, if the wear of the rack is too serious or if the wear of the speed tree is too serious, the precision of treatment of treatment is low; And the hole in the zipper will be low, which will make it cause the surface of the part seems equal to the undulation, but the distance between the ripple is the same as that of the gloves.

(3) If the distance ripples are also generated on the final surface of the room, it may be clear that the cause of the generation is linked to the transmission mechanism. Overall, it does not matter which will move to the left and right directions of the original trailer, and leave a regular curve on the outdoor area or the final surface of the room.

1.2 Chaotic undulations

During the treatment of bedding, there are often crowded on the surface of the room, that is to say that the undulations are disorderly and various, without any regular and intermittent event. In normal circumstances, there are three reasons for the occurrence of disorderly wave models:

① The bearing of the spindle causes wear during rotation at high speed.

② Errors occur between the spindle and the corresponding parts. In this way, if the main axis is in a state of racing at high speed, it will make irregular axial movements under the effect of the error;

③ In the long -term operation of the equipment, the spindle hole is obviously worn and aging. landing.

1.3 Spiral Ripple

The SO-Appelée spiral undulation consists in forming undulations similar to those of the wires. Mainly linked to the following 3 aspects:

① The surface of the room and the main axis are not closely adjusted;

② The blessing of the knife is too much pine;

③ The rigidity of the blade did not comply with the relevant standards.

Anyway, the part and the tools will resonate with the knife in the vertical knife, then there will be different degrees of movement in the front and rear directions. In this way, the part thickness of the part of the part cannot be effectively guaranteed, and the surface of the part will appear high or low. In addition, the vibration between the part and the tool is a forced vibration, which is linked to the source of vibration outside the machine or other parts of the machine tool. Consequently, the frequency of vibrations is not only affected by the frequency of external interference, but also linked to the imbalance of the main axis of the main axis. In addition, during the functioning of the bedtime, if the process system generates vibrations, it can induce exciting vibrations and the mutual position between the room and the tool will be disturbed. also be a cycle cycle. When a spiral undulation appears, it is often accompanied by hard.

2. Solution of ripples on the surface of the room on the floor of the ground during treatment

2.1 The solution of the distance wave motif

(1) Use tools such as test rods, the file rule or the knife port to measure the same tree error in the light bar and the inner hole in the gear. If the error is large, you can link the guidance rails with a thicker error value on the surface of the flat guide rail, then reduce the error through the search and scratch method, so that the Light bar and the gear hole are concentric. It should be noted that in order to ensure that the thickness of the angle guide’s membership can meet the requirements of the elevation of the slide and eliminate errors in the horizontal direction, professional technicians must be organized for strictly calculations and detailed. If the error value is not large, the liaison surface of the slide on the slide and the slide box can be increased according to the error value, raised the slide box, then treated the gears on the medium trailer screw to make it negatively change.

(2) Measure the curvature of the light bar. In other words, for two type V iron, after adding the light bar, measure its curvature. In this process, the measurement instrument can be used by the percentage table. If the header of the percentage table first contacts the bus in the middle of the bus, then rotates the light bar, the number read from the table for percentage, then dividing the 2 is the curvature of the light bar . In order to improve the accuracy of the measurement results, the adjacent position of the central position of the bus at the top of the light bar can be measured separately, in order to clarify the highest point to fold the light bar and understand the maximum value flexion of the light bar. After clarifying the curvature of the light bar, you can use the corresponding method to correct the light bar and solve the flexion problem of the light bar.

(3) Apply a lead wire to equipment and change. In other words, use oil to use oil on the gear, the soft lead wire with a diameter of 1.25 to 1.50 times on the upper space, then apply the force to the gear to rotate it. When the lead wire appears on the connection surface of the equipment and rack, the impact of the overcrowded pressure will be deformed. Therefore, you just have to measure the thickness of the lead wire with a calibrated calibration.

(4) For distance ripples in the part section, the following three steps can be taken for a solution.

① First of all, the trailer screw in the middle is treated, then the anti-pressing outfit is used for treatment.

② Strictly unify the heart of the screw to the heart of the silk mother, keep it consistent, then use the remaining quantity of research and scratch method to cope with it.

③ Apply a corresponding adjustment measure for oblique iron to eliminate the gap between the guidance rail.

2.2 Break ups of disorderly waves

(1) Replacement of the wear roll in the pin. The highest point of the beating of the outside ring is made with the lowest point of the pin box, and the point with the highest jump in the interior holes is made with the most point bottom of the axle diameter of the spindle. minimum.

(2) Adjust the round nut to the end of the spindle, adjust the space between the roll of the plane, the hull and other parts, and eliminate it and strengthen the control of the axis of the spindle. During the adjustment process, you must first remove the transmission equipment on the main axis, then rotate the main axis to adjust the round nut until its relaxation encounters the relevantRequire.

(3) It is mainly on the CNC bed. After that, the outer diameter of the steel sleeve is treated, and there is enough treatment waste with the inner diameter of the steel sleeve. Then, using the cold narrowing method, when the temperature is returned to normal, the size of the size from 0.005 to 0.020 mm is extended depending on the size of the main shaft box.

2.3 Spiral ripple solution

(1) Adjust the spindle bearings to ensure that the radial difference in the pin meets the relevant precision standards, so that the amount of axial pipe meets the relevant requirements.

(2) Press the tool and eliminate the phenomenon of relaxation. At the same time, it is necessary to eliminate the impact of external interference as much as possible. Finally, when choosing a knife, we must strengthen rigid control of the knife.

(3) In daily work, the balance of the craft system must also be corrected and the balance of balance as a function of the real situation must be treated; The main tree bearings, tools and other components.

3. Conclusion

In summary, different forms of wave forms have different causes. During the treatment of the round of the room, an equidistant wave motif, chaotic undulation and spiral undulations often appear on the surface of the room. As long as the shape of the wave motif on the surface of the room and discover the fundamental cause of this wave of pattern form, we can take a targeted solution strategy. It is only in this way that we can effectively improve the quality of the parts and fully use the performance of the part. In the process of searching for the cause and the treatment solution for the room surface wave model, the following aspects must be obtained:

① Technical staff must join a serious and responsible work attitude, to do scientific and reasonable maintenance and adjustable adjustment of the sleeper, so that the accuracy of treatment of the room is the best;

② Analyze and understand in depth the principle of the carriers of the Tour to Sun and strengthen the control of the quantity of car cutting according to this;

③ According to the treatment of the room, take the correct auxiliary means to improve the quality of treatment of the part, reduce the impact of human factors or external factors on the quality of the parts;

④ The tools of different types of tools are used properly and the life of the knife is extended to improve the operating efficiency of the sleeper.