Master the essence! Gear rack installation full strategy and necessary matters needing attention

Gear and rack drive mechanism is widely used in all kinds of mechanical equipment, and its stability and accuracy directly affect the operation efficiency and life of the equipment. Therefore, it is essential to rack the gear correctly. This article will introduce the installation steps of the rack and gear, and summarize some key precautions to help readers master the essence of the installation.

• Preparation before installation Before starting the installation of the rack and rack, a series of preparations are required to ensure the smooth installation process.

• Tool and equipment preparation: prepare the required tools and equipment, including rack and table instrument, positioning tools, measuring tools, screw wrench, torque wrench, etc. These tools will help you make accurate measurements and adjustments during installation.

• Check the workpiece: check the workpiece of the gear and rack to ensure that the surface is free from damage and corrosion, and meet the design requirements. At the same time, check whether the tolerance of the installation surface and the bearing surface meets the design standards, and use the micrometer and other tools for detection.

Demagnetization treatment: If the rack remains magnetism, demagnetization treatment should be conducted to avoid the influence of magnetism on the installation accuracy.

Details the installation steps

Patten quick mounting method

The installation steps of the gear rack need to be detailed and orderly, the following is the detailed installation process: 1. Install the guide rail: according to the equipment design, fix the guide rail on the bed, and ensure the base surface of the guide railParallel to the rack-bearing surface. This step is the basis for the subsequent installation of the rack.

Bar positioning and installation: align the rack with the guide rail, and install them from the middle to the two ends. From a rack (e. g., the 5 / 6 in the spliced rack), ensure that the screw hole and the bolt are on the same center line to prevent interference between the bolt and the hole position in the subsequent rack. When installing the first rack, the fixture should be evenly distributed close to the screw hole, so that the rack of teeth are completely close to the bearing surface, and use the torque wrench to lock the rack according to the torsion requirements of the bolt.

Splice rack: when installing the subsequent rack, first pretighten with a small locking force (such as 10%), use the installation gauge to adjust the rack gap, and then lock with a large locking force (such as 50%). After adjusting the rack splicing gap, lock the bolt with the recommended torque value. The sequence of the locking bolts shall be from the fixed rack to the direction to be installed.

Measurement and adjustment: to measure the deviation of the middle and the two ends of the three points of each rack, and make a mark. Observe whether the deviation is within the specified range according to the product installation requirements. Find the highest point and install the gear against the highest point position.

Installation method of rack-type table

Install the pin: Install the pin in the pin hole on the rack to ensure the stability of the rack. For example, if the pin hole on the rack is φ 5.7, the positioning pin used shall be φ After removing the iron chips through the drill bed, use the hinge to φ 6 and then install the pin.6. Install the gear and the reducer: assemble the gear and the reducer, detect the highest point of the gear and mark it. Install the reducer on the slide table so that the highest point of the gear coincides with the highest point of the rack. Through the regulating mechanism on the transition plate of the reducer, initially adjust the gap of the gear rack, and pretighten the bolts.Test meshing: apply paint to the rack, move the gear back and forth, and observe whether the rack surface shows correct meshing marks. If not, judge the cause from the presented figure and adjust the angle of the gearbox until normal engagement.Installation considerations in the process of installing the gear rack, need to pay attention to the following matters, to ensure the installation quality and the stability of the equipment operation:Confirm the movement direction and positioning accuracy: in the design of the gear rack drive mechanism, should confirm the movement direction of the mechanism (horizontal or vertical), and choose the gear rack of the corresponding specifications. At the same time, according to the positioning accuracy requirements to select the corresponding accuracy of the product, and understand the product of the bearing surface and installation surface requirements, the tolerance requirements of the design of processing parts. Observe the chamfer details of the rack: check whether the design chamfer details of the rack product, which is related to whether the machining parts need to be designed to avoid the details. Reasonable chamfer design can reduce the interference during the installation and improve the installation efficiency.Set the mechanism with adjustable gap: the mechanism of fixed gear should set the mechanism with adjustable gap, so as to adjust the gap during installation. Reasonable clearance can ensure smooth operation of the rack and reduce vibration and noise.The rack bearing surface is parallel to the datum of the guide rail: the rack bearing surface shall be parallel to the datum of the guide rail, with additional tolerance requirements. This requirement ensures the stability and accuracy of the rack during installation.Measurement and adjustment during installation: During installation, the measurement and adjustment should be made continuously to ensure the position accuracy of the rack and gear. Use the rack instrument for measure, and adjust the position and gap of the rack according to the measurement results.

Testing and commissioning after installation: After installation, comprehensive testing should be carried out, including the engagement of gear rack, gap size, parallelism and straightness, etc. At the same time, the test run is conducted to check the stability and operation efficiency of the equipment.

The correct installation of gear rack is the key to ensure the stable operation of mechanical equipment. Through a detailed summary of the installation steps and precautions, this article provides a comprehensive installation guide. In practice, the installation steps should be strictly followed, and attention should be paid to details and measurement and adjustment. Only in this way can the accuracy and stability of the gear rack be ensured, and the operation efficiency and life of the equipment be improved. I hope this article can provide help and guidance to readers in practical operation.