The retrofit solution is as shown in the figure. A stepping motor is mounted on the measuring carriage of the gear double-piercing instrument, and the transmission gear is mounted on the standard gear shaft to mesh with the gear on the motor shaft, and the displacement meter is used instead of the dial gauge pair. The variation of the center distance of the double-gear gear is equally spaced, and the measurement signal is converted by the inductive micrometer to output the DC voltage signal, which is amplified, filtered, sampled and A/D converted, and finally processed by the MCU system, then displayed and printed. Measurement results.
Support frame parts 1) The role of the support frame and the shape improvement The frame part of the gear double-rigid structure is designed to be mounted on a movable carriage of a gear double-handle (for example) to support the motor. Shows the specific installation of the part to be designed and its outline.
2) Support frame process structure design Because the discharge board is to be installed on the horizontal plate, the horizontal plate structure can be designed according to the shape of the motor; the bottom plate is placed on the double-gear carriage to play a fixed role, as shown.
The bottom plate of the support frame is designed in a U shape, mainly for saving materials and reducing weight; the size of the horizontal plate and the vertical plate is designed to be smaller than that of the bottom plate support frame, mainly for saving materials and reducing weight, and then It is convenient for the screws on the bottom plate.
3) Support frame design The size of the base plate is designed according to the size ratio of the double-jaw main carriage and the double-jaw wall thickness; the overall height is based on the double-bit and motor shaft length design; each shape tolerance, horizontal plate The width and the hole set on the horizontal plate are designed according to the size of the motor.
4) ANSYS simulates the force and deformation of the entire support frame. The height of the vertical plate is L=118mm, a=85mm, b=10mm; the length of the horizontal plate is l0=212mm, a=85mm, c=10mm, and l1 is the axis of the motor to the center of the vertical plate. The distance of the line, l1=1645mm; the gravity of the horizontal plate is approximated as the distributed load q=P2/L0=759N/m; the allowable stiffness of the horizontal plate is [f]=003mm, and E=210GPa, the support frame is modeled The force is as shown.
The support frame is modeled by the force diagram support frame deformation frame support stand vertical plate and horizontal plate are selected 3BEAM unit [1], vertical plate, horizontal plate cross-sectional dimension, horizontal plate length, motor axis to the vertical plate center line distance The height of the vertical plate is expressed by parameters, which makes the modeling of the support frame parameterized; the deformation diagram and the bending moment diagram are as shown in the figure.
It can be seen that the maximum deformation is 0.532 mm, which exceeds the allowable stiffness, which means that the stiffness of the transverse plate does not satisfy the condition, so the two ribs designed to enhance the rigidity. The deformation diagram of the rear support frame with two ribs is shown as follows, and the maximum deformation is 0000881 mm. At this time, the rigidity of the transverse plate satisfies the condition.
The bending moment diagram of the support frame plus the deformation diagram of the rear support frame of the two ribs can also be achieved by changing the rigidity of the vertical and horizontal cross sections. In the parametric design, the deformation of the support frame can be directly obtained by simply changing the length and width of the cross section of the vertical plate and the horizontal plate. The design uses the ribbed plate to economically use the material.
Conclusion Using ANSYS finite element numerical simulation technology can reduce design cost, shorten cycle of design and analysis, and increase product and engineering reliability. ANSYS can also perform simulation test and analysis, analyze mechanical accidents, and find the cause of accidents. The wide application of ANSYS in engineering practice makes it possible to promote the design of the support frame parts in the intelligent transformation of the gear double-bitenger.
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