CN2091215U

CN2091215U - Low-eddy noise planer

Info

Publication number: CN2091215U
Application number: CN 91205576
Authority: CN
Inventors: 刘利民
Original assignee: Ninth Design And Research Institute Of China State Shipbuilding Corp
Current assignee: Ninth Design And Research Institute Of China State Shipbuilding Corp
Priority date: 1991-04-03
Filing date: 1991-04-03
Publication date: 1991-12-25

Abstract

The utility model discloses a low-eddy noise planer, which is composed of a working table, a driving mechanism, and a cutter component, wherein, the cutter component adopts 'a semi-enclosed press cutter block structure'; the press cutter block is provided with a radial projected part on one end which is far away from the planer blade; the radial end surface of the projected part is a planar surface and is approximately level with the external peripheral surface of the adjacent cutter shaft; the distance between the end surface of the press cutter block deviating from the planer blade and the cutter groove wall of the cutter shaft is two to seven millimeters, and the end surface is provided with a blind hole which can hold pushing-tight screws. The low-eddy noise planer makes the eddy noise of the planer lowered by four to six decibels (A).

Description

Low-eddy noise planer

The utility model relates to a kind of planer, thereby particularly a kind of its pressure knife block is the thicknessing and planning machine that semi-enclosed structure has low eddy current crack.

Thicknessing and planning machine is big, the wide a kind of planing operation equipment of use amount in the modern timber processing, it also is one of mechanical sources that produces strong noise, reach as high as about 100 decibels (A), have a strong impact on health, contaminated environment, and influence the raising of production efficiency, therefore, be to classify one of difficult problem that emphasis captures both at home and abroad as always.

Five equilibrium mills out 3～4 cutter grooves on the cutter shaft of planer, interior a planing tool is housed respectively, and length is held out against by the screw on the push type broach iron at 200～1000 millimeters.Directly drive cutter shaft by the motor belt, rotate at a high speed with the linear velocity of 25～30 meter per seconds (4500～5000 rev/mins) and carry out planing operation.Great majority adopt elongated slot straight knife axle on the planer at present, at the rimmer knife groove that on whole length, leaves about 25 mm wides, 24 millimeters deep between pressure knife block and the bit shaft, and pressure knife block is lower, when cutter shaft when rotating at a high speed, the edge of cutter blade and cutter groove has formed irregular airflow layer and has produced eddy current, evokes air vibration and has produced eddy current crack.

In recent years, developed style numerous " closed cutter shaft " both at home and abroad preventing eddy current crack more effectively, still, the sealing cutter shaft processes that not only expense is big, also can influence its closed performance, can not reach the purpose that suppresses eddy current crack because of the cutter blade became uneven that uses factory to change is even.

The purpose of this utility model promptly provides a kind of planer with low eddy current crack, and is simple in structure and be not subjected to the influence of cutter blade thickness, still guarantees the cutting function and the operating flexibility of planer simultaneously.

For realizing this purpose, planer of the present utility model is by workbench, driving mechanism and toolbox, and toolbox has wherein adopted " semi-enclosed pressure knife block ".Pressure knife block has a radial projection portion away from an end of cutter blade, and the radial end face of this jut is a plane surface, and roughly concordant with contiguous cutter shaft outer rim.Pressure knife block deviates from that distance is 2～7 millimeters between the cutter cell wall of tip to face distance cutter shaft of planing tool, has on this end face and holds the blind hole that holds out against screw head.

Because the height of pressure knife block is concordant with the cutter shaft outer peripheral face basically, and the distance between pressure knife block and the cutter shaft is less, air-flow can be crossed the cutter groove space between pressure knife block and the cutter shaft smooth-goingly, and can eddy generation, greatly reduces eddy current crack.

Below in conjunction with embodiment and accompanying drawing the utility model is described in detail, so that characteristics of the present utility model and advantage are had further understanding.

Fig. 1 is the pressure knife block structural representation of prior art planer;

Fig. 2 is the semi-enclosed push type broach block structured schematic diagram of the utility model planer.

Please referring to Fig. 1, it has shown traditional pressure knife block structure earlier.As seen from the figure, because the distance between pressure knife block 1 and the cutter shaft 3 cutter cell walls 7 is about 25 millimeters, and the height of pressure knife block 1 is lower than cutter shaft 3, so when cutter shaft 3 high speeds are rotated, the edge of cutter blade and cutter groove has formed irregular airflow layer and has produced eddy current, has brought very big eddy current crack.Cutter blade 2 holds out against on cutter shaft 3 by holding out against screw 5.

Please referring to Fig. 2, it is the push type broach block structured schematic diagram of the utility model planer again.Wherein, compare with the pressure knife block among Fig. 1, the rear end of pressure knife block 1 (away from an end of cutter blade) increased a radial projection portion 4, and its height is roughly concordant with the outer peripheral face of cutter shaft 3.In fact, for not influencing the operate as normal of planer, this jut 4 should be a little less than the cutter shaft outer peripheral face, in order to avoid this pressure knife block 1 is run into workpiece when cutter shaft rotates.The outer fringe surface of jut 4 is generally plane surface.The rear end face of pressure knife block 1 is about 2～7 millimeters apart from the distance of cutter shaft 3 cutter cell walls 7.At this rear end face one blind hole 6 is arranged, hold out against screw 5 and be positioned at this blind hole 6, thereby the head of screw 5 leans pressure knife block 1 is pressed on cutter blade 2 on the cutter shaft 3.

When needs are changed cutter blade 2, earlier screw 5 is screwed into blind hole 6 to pressure knife block 1 direction, loosen pressure knife block 1, the blade 2 of can backing off.

In a kind of scheme, the circumferential width of rear end plane surface 4 is about 2～8 millimeters, and blind hole 6 degree of depth are 3～6 millimeters, and the distance between rear end face and the cutter shaft 3 is 2～7 millimeters, and noise reduction can reach 4～7 decibels (A).

Claims

1, a kind of planer with low eddy current crack, comprise workbench, driving mechanism and toolbox, toolbox wherein is for to be equipped with 3～4 cutter blade 2 on cutter shaft 3, every cutter blade 2 usefulness pressure knife blocks 1 and hold out against screw 5 and be fixed on the cutter shaft 3, it is characterized in that, described pressure knife block 1 has a radial projection portion 4 away from an end of cutter blade 2, and the radial end face of this jut 4 is a plane surface, and roughly concordant with contiguous cutter shaft 3 outer peripheral faces; Pressure knife block 1 deviates from the end face of cutter blade 2 and the distance between the cutter shaft 3 cutter cell walls 7 is 2～7 millimeters, has one to admit the blind hole 6 that holds out against screw 5 heads on this end face.

2, planer as claimed in claim 1 is characterized in that, the plane surface of the jut 4 of described pressure knife block 1 is 2～8 millimeters along circumferential width.

3, planer as claimed in claim 1 or 2 is characterized in that, the degree of depth of described blind hole 6 is 3～6 millimeters.