The section cutter has a tooth profile and enters the xy plane sketch mode. As shown in Figure 2, draw a single tooth line according to the pattern size in the sketch, select R, F, and v as the main parameters and assign values ​​to drive the figure and constrain its angle. , draw the tooth profile and finish the exit sketch. Create a new sketch in the xy plane, draw a circle according to the size of the pattern, and constrain the center of the circle to the center of the coordinate, and draw it into the axis hole section. As shown in Figure 3, select t, d as the main parameter and assign the value to drive the graph to complete the exit sketch.
Figure 2 Tooth profile sketch
Figure 3 Axial hole section sketch
Create a new sketch in the plane, draw a sketch of the side angle section according to the appropriate size requirements. As shown in Figure 4, select L and a as the main parameters and assign values ​​to drive the graph to complete the exit sketch.
Figure 4 Side angle section sketch
2.3 Building model features and editing expression-driven models
UG NX modeling technology is a feature-based modeling technology. Its modules provide various standard design features. Each standard feature highlights key feature sizes and positioning dimensions, which can well convey design intent and is easy to call and edit. It is also possible to create feature sets and manage features. Feature parameters and expressions can depend on each other, passing data to each other, improving the level of expression design, so that actual information can be defined by engineering features. Expressions in different parts can also work together through links, ie an expression in one part can establish a connection by linking another expression in the other part, when the expression in the referenced part is updated The corresponding expression in the component linked to it is also updated.
Use the Extrude function to select the sketch of the sketch in Figure 2. Create a single-tooth model and select the Circular Array for the toothed array to complete the complete tooth creation. Again, use the pull function to select the sketch section of Figure 3, and create a shaft hole model by Boolean operation. Select the Re-volve function, select the sketch section of Figure 4, and build the side angle of the tool model by Boolean operation. Finally, partial chamfering is performed as needed.
Select the Expression function, click the geometric expression button, extract the corresponding parameters from the used parameter set, select the stretching distance as a parameter, name it B, set the array quantity parameter to Z, and set the array spacing angle parameter. A2, edit the expression according to the mutual mathematical relationship:
A2=3600/Z;
H=B;
L = 3 × B.
So far, we have established a sketch model of the bottom surface of the chip milling cutter in the sketch space, which has formed 9 main parameters R, B, Z, d, Rl, a, F, v, t and 3 auxiliary parameters a2, H, L. The resulting drive model (see Figure 5), its modifications can be modified by sketches or modified by expressions.
Figure 5 piece iron knife model and renderings
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Product Features
1. The product is easy to open and close, which can effectively seal deep well plates, sample tubes, etc., which is convenient for operation and saves time.
2. Good airtightness can prevent the volatilization of various solvents.
3. Tolerate a wide temperature range, suitable for various experiments.
4. Resistant to chemical corrosion and used for low-temperature storage.
5. The pre-opened silica gel lid allows the Pipette tip or probe to enter the hole without damaging the lid.
6. After the third party inspection, no RNA/DNA enzyme contamination
7. It can be used on automated machines, and the product size conforms to the SBS standard
8. It can be used with stickers, silica gel, and sealed without leakage. 96 round-hole silica gel and 8-hole silica gel strip with matching sealing plate
9. Good flatness, can be transported long distance after sealing with heat sealing film
10. The products are produced and packaged in a 100,000-class dust-free workshop, and the product quality is stable
11. Alphabetical sorting and cut corner marking make the storage and collection of samples more convenient and faster.
12. Each package has an independent article number and batch number identification, which is convenient for quality tracking and traceability
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