Carpenter's smoothing, reamerTechnical field
The utility model is related to a kind of woodworking machinery machining tool, be specifically it is a kind of be used for carrying out machined hole smoothing,Carpenter's smoothing of reaming processing, reamer.
Background technology
Drilled using carpenter's auger on woodwork, generally there are two problems：Hole wall burr and aperture are small.Not influence phaseClose assembly work, it is sometimes desirable to flower many artificial removal's burrs or reaming.Common reamer utilizes sharp spiral cutting swordAperture is cut, but smoothing effect is not good.Influence hole wall surface quality.
The content of the invention
Technical problem to be solved in the utility model be to provide it is a kind of have while reaming cutting ability is ensured compared withCarpenter's smoothing of good smoothing effect, reamer.
Carpenter's smoothing of the present utility model, reamer include bar-shaped matrix and a principal screw groove being opened on matrix, withAnd the cutting edge of spiral groove edge formation；The cutting edge dorsal part be physically also formed with a plurality of parallel width and depth is smallIn the auxiliary screw groove of principal screw groove, auxiliary screw groove edge formation wiper edges, the numerical value of wiper edges helical rake angle γ 1 for-10 °~-20 °, the numerical value of cutting edge helical rake angle γ 2 is 5 °~15 °.
It is preferred that, the auxiliary screw groove has three.
The utility model can improve smoothing by the combination of cutting edge and wiper edges while reaming cutting is ensuredEffect, simplifies the process of reaming smoothing, improves crudy.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the apex point direction end face mplifying structure schematic diagram of the utility model embodiment.
Embodiment
As illustrated, carpenter's smoothing, reamer include bar-shaped matrix and a principal screw groove 1 being opened on matrix, withAnd the cutting edge of spiral groove edge formation；The cutting edge dorsal part to be physically also formed with three parallel width and depth smallIn the auxiliary screw groove 2 of principal screw groove, auxiliary screw groove edge formation wiper edges, the numerical value of wiper edges helical rake angle γ 1 is -10 °~-20 °, hole wall smoothing can be processed；The numerical value of cutting edge helical rake angle γ 2 be 5 °~15 °, cut it is sharp, can reaming addWork.