How to make a good quality speed reducer

1.Precision of the gear control gear

The basic regulation of gear accuracy: through practical activity certification, gear accuracy must be manipulated in GB10995-887~8 level, angular speed is higher than 50 m/s gear, gear distance limit error, gear axial vibration size tolerance, gear size tolerance must be stable to achieve level 7 accuracy. Under the condition of achieving 7 precision gear, the tooth should be reversed, and the convex mold should be resolutely eliminated.

2. Manieuvate the quality of raw materials

High quality raw materials are a necessary condition for the manufacture of high quality goods. No matter which way, the raw materials need to go through rigorous composition detection, grain size measurement and innocence identification after arriving at the factory. The purpose is to immediately adjust the heat treatment deformation, improve the quality of tooth production and processing.

3. Avoid heat treatment deformation

After initial processing, the billet is cultivated into steel casting, quenching or heat treatment to achieve:
(1) Soft cast iron parts are easy for drilling production and processing;
(2) Reduce the internal stress;
(3) Optimize the crystal and improve the mechanism to improve the physical properties of the steel;

(4) Prepare in advance for the organization. It should be noted that, in quenching or heat treatment, we must maintain the temperature in the furnace symmetry, and the use of fixture, so that the product workpiece evenly heating and refrigeration, prohibit accumulation together. For the gears that need to be punched to relieve the net weight, the punching sequence shall be distributed after heat treatment. The heat treatment of the gear gear has high compressive strength, strength, wear resistance and fatigue strength, while the core still maintains good plastic deformation and ductility. To reduce the deformation. Cervical induction quenching should use lower heat treatment temperature and shorter cooling time, uniform heating and slow cooling.

5. Ensure the accuracy of the tooth billet

The accuracy of the gear hole specification is specified in the positive and middle difference of the error value of the hole, set at ± 0.003~ ± 0.005 mm; if the deviation is within the design scheme of the hole, it must be classified and transferred to the front tooth process. The inner orifice vibration and axial vibration of the tooth blank are level 6, which is set in the 0.01~0.02mm category.

6. Production and processing countermeasures of front teeth

The purchased gear CNC blade must be tested, must do AA level regulations. After grinding the CNC blade, check the axial aspect of the front blade, the adjacent segment difference, the accumulation error value of the expansion groove, the front of the expansion drill and the center line of the inner thread. Under the premise of not endangering the compressive strength of gear, improve the high index of 0.05~0.1 meters, improve the high index of CNC blade teeth, and prevent the intervention of gear transmission wheel teeth.M=1~2 gears use the round end milling cutter, and the round amount is R=0.1~0.15m. Reduce the mesh corner edge and improve the tooth top intervention during gear transmission. The front tooth machinery and equipment should be carried out once a year, and the maintenance must be carried out. Operators should also often carry out self-inspection, ineffective measures in the lathe spindle axial gap control below 0.01mm, knife shaft diameter jump below 0.005 mm, spiral bevel gear shaking below 0.008 mm.Installation accuracy of CNC blade: the axial fibrillation operation of CNC blade is operated below 0.003 mm, and the internal hole vibration is operated below 0.004mm. Accuracy of front tooth overalls, journal diameter and gap of product workpiece hole, ensure within 0.001~0.004mm. The external thread on the journal must be cut by the external thread bed under the precise positioning of the C-top class: flatness 0.003 mm, diameter jump 0.005 mm. The nut must ensure that the thread and the reference point are once loaded, and the plane of the sealing ring is 0.003 mm.

7. Civilized behavior of production and manufacturing

Gear transmission noise has over 30% of the cause comes from the rough edges, bumps and bumps. Some processing plants in the gear box installation, remove the edge and bump, is a passive practice.
(1) Gear shaft parts, the rear teeth immediately cover the special plastic protective shell to the lower channel process, and with a special plastic protective shell into the warehouse and delivery.
(2) Carry out the honing tooth processing process, reduce the journal surface roughness, remove the wool edges, and avoid bumps and bumps, can reasonably reduce the noise of gear transmission.

8. Use other raw materials and heat treatment and metal surface treatment methods

(1) Can use powder not metallurgical forming technology, gear forming after the tooth induction quenching.
(2) The use of ink-cast iron, gear drilling production and processing, and then carry out soft nitrogen infiltration treatment.
(3) The use of adjustable steel raw materials, gear drilling work, using soft nitrogen infiltration treatment or tooth plating copper to solve. Comprehensive above, to eliminate the gear transmission noise, gear raw materials and heat treatment is to this, tooth blank accuracy is to ensure, gear accuracy is important, civilized behavior production and manufacturing is the basic.