Fast dust-removing reamer screw which can reduce the pressure between the screw and the workpiece when tightening the wood

• Main Author: SHI, YI-JIE
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2021
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The present invention provides a fast dust-removing reamer screw, which includes a screw head, a rod body extending from the screw head, and a first thread provided on the outer peripheral surface of the rod body. The rod body includes a shaft part connected to the screw head, a reaming part connected to the shaft part, and a tapered part connected to the other side of the reaming part, the reaming portion including a plurality of spirally staggered first reaming blocks, a plurality of second reaming blocks, and a plurality of third reaming blocks, and a plurality of dust-removing channels formed between the first reaming blocks, the second reaming blocks, and the third reaming blocks. The first width of a first dust-removing channel located between any two of the first reaming blocks and the second width of a second dust-removing channel located between any two of the second reaming blocks are different from each other, therefore the sawdust can be discharged quickly to reduce the pressure between the screw