Spiral groove hob
Keywords:
Product Description
Customizable cylindrical worm hob, enveloping worm hob, double-lead worm hob, multi-head worm hob. Depending on actual needs, inlaid, integral, straight groove, spiral groove, surface coating and other processes can be selected.
Spiral groove worm wheel hobs are special tools designed for worm wheel machining to meet the needs of complex tooth shapes and high precision. The chip grooves are spirally distributed along the cylindrical surface of the tool body. By optimizing the cutting angle and chip removal performance, it can effectively improve the precision, efficiency, and surface quality of worm wheel machining. It is widely used in the mass production of medium and high modulus, large helix angle worm wheels or precision transmission worm wheels.
Structural Features
- Spiral Chip Groove Design The chip groove is inclined spirally along the hob axis (the spiral angle usually has a matching relationship with the worm wheel spiral angle), rather than the parallel distribution of a straight groove. This design gives the cutting edge of the tooth a more reasonable rake angle and clearance angle, reducing cutting resistance and machining vibration.
- Integral or Separate Structure According to the application scenario, it can be divided into integral spiral groove worm wheel hob (the tool body and teeth are integrally formed) and inlaid spiral groove worm wheel hob (the teeth are inlaid in the spiral groove). The integral structure has stronger rigidity and is suitable for high-precision machining; the inlaid type is convenient for replacing teeth and is suitable for large modulus rough machining.
- Tooth Shape Conjugate Matching The tooth shape of the hob must be precisely conjugate with the tooth groove shape of the worm wheel being machined. Through the lead design of the spiral groove, it ensures that the hob and the worm wheel form the correct spatial meshing relationship during machining, enveloping the worm wheel tooth surface that meets the precision requirements.
- Chip Removal and Cooling Optimization The inclined direction and spiral angle of the spiral groove can guide the chips to be discharged to one end along the groove, avoiding chip accumulation and blockage; at the same time, the spiral groove profile is more conducive to the penetration of cutting fluid into the cutting area, improving cooling and lubrication effects.
- Rigidity and Strength Balance The groove depth and width of the spiral groove need to be optimized through finite element analysis. While ensuring the chip space, it avoids excessive weakening of the tool body rigidity, especially in the design of large modulus hobs, the torsional resistance performance needs to be considered.
Classification:
Cutter Series
Worm gear hob
