CN201042819Y

CN201042819Y - Easily replaced and improved structure cutter group

Info

Publication number: CN201042819Y
Application number: CNU2007201547020U
Authority: CN
Inventors: 蔡泗陵
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-15
Filing date: 2007-05-15
Publication date: 2008-04-02
Anticipated expiration: 2017-05-15

Abstract

The utility model discloses an improved structure of cutting tool set which is designed to facilitate the replacement of blades thereon. The cutting tool set is provided with a central shaft whereon a plurality of axial sockets are arranged in equally-spaced distance; the axial sockets are sheathed with a plurality of blades; a plurality of teeth are arranged in the corresponding sockets; one end of the central shaft is connected with a caulking ring which isaxially locked on the central shaft; the other end of the central shaft is interlocked with a bolt; while both ends of the central shaft are connected first by a bearing and then by a bearing seat respectively; the outer diameter of the bearing is smaller than the inner diameter of the blade; the inner diameter of the bolt is larger than the outer diameter of the bearing, thus enabling the replacement of blades after removing the bearing seat and the bolt without moving the bearing; when the number of edges of the blades are smaller than that of the teeth, a blade can be placed in every second socket so as to form a rotary cutting tool. The improved structure for the easy replacement of blades on the cutting tool set provided by the utility model can be applied to woodworking tools.

Description

The easy replacement structure-improved of set of knives

Technical field

The utility model relates to a kind of structure-improved of set of knives, particularly a kind ofly is used for the structure-improved that wood cutter is easy to substitute the circular knife of blade.

Background technology

The now existing multiple helical form cutter that is applied to wood cutter, add isometric long blade from the most traditional skewed slot that is arranged on the central shaft, the equally spaced several shortened cutting blades of similar helical form to improvement, its function all is to save material, in order to avoid during breaks down, need whole group cutter to substitute simultaneously, this is the certainty on the permanent manufacturing experience, this is because the damage of blade, may have only a position, long blade needs whole piece to substitute, on cost certainly than shortened cutting blade costliness, so the technical differentiation of formation.

A kind of a slice a slice blade shaft was once arranged to the set of knives that is set on the central shaft, but only had single slotted eye on the blade, be located at single prominent bar on the central shaft, used the cutter that forms a kind of screw type in order to correspondence.This cutter has more convenience than aforesaid various blades in the replacement of blade, still, after the cutter assembling, need to fix with bearing and bearing block respectively at the two ends of central shaft, could allow cutter produce due cutting function.In order to make the stationarity of set of knives better, generally all can use a nut to be screwed onto the corresponding screw thread place that is provided with of central shaft respectively in addition, so produce splendid positioning action at the two ends of set of knives.; set of knives always needs repairing when substituting wherein some blade, at this moment, need separate bearing and bearing block earlier; loosen nut again; piecemeal blade can be taken out in regular turn the action that substitutes, many actions of removing bearing; when reinstalling; also many actions in the time of to some emergency maintenance, can have influence on production efficiency.

The utility model content

Main purpose of the present utility model is to provide a kind of easy replacement structure-improved of set of knives, is convenient to realize the replacement of set of knives cutter.

For reaching above-mentioned purpose, structure of the present utility model is: set of knives has a central shaft, central shaft is provided with the axial notch of several spaced sets, several blades on axial notch, have been inserted in, the internal diameter of each blade is provided with several lobes corresponding to axial notch, and an end of central shaft joins with a spacer ring, spacer ring vertically interlocking on central shaft, the other end of central shaft is with a nut interlocking, and the two ends of central shaft engage with a bearing block after engaging with a bearing respectively again; The external diameter of bearing is less than the internal diameter of blade, and the internal diameter of nut is also greater than the external diameter of bearing.

The utility model is owing to allow the external diameter of bearing less than the internal diameter of blade, and the internal diameter of nut is also greater than the external diameter of bearing, remove bearing block and nut like this after, just can easily substitute blade, need not to move apart bearing.

Another purpose of the present utility model is to provide a kind of easy replacement structure-improved of set of knives, not only is convenient to the replacement of set of knives cutter, is more convenient for making set of knives to form the helical form cutter.

For reaching this purpose, structure of the present utility model is: set of knives has a central shaft, central shaft is provided with the axial notch of several spaced sets, several blades on axial notch, have been inserted in, the internal diameter of each blade is provided with several lobes corresponding to axial notch, knife edge number is less than the lobe number on the blade, one end of central shaft joins with a spacer ring, spacer ring vertically interlocking on central shaft, the other end of central shaft is with a nut interlocking, and the two ends of central shaft engage with a bearing block after engaging with a bearing respectively again; The external diameter of bearing is less than the internal diameter of blade, and the internal diameter of nut is also greater than the external diameter of bearing.

Owing to allow the external diameter of bearing less than the internal diameter of blade, and the internal diameter of nut is also greater than the external diameter of bearing, after removing bearing block and nut like this, just can easily substitute blade, need not to move apart bearing, simultaneously, because knife edge number is less than the lobe number on the blade, can on central shaft, put into a blade every a groove, all there is different prefabricated structures the slotted eye position that this blade is different from common every blade of single group, all have the same outward appearance but form every blade, only when winding, just can reach the effect of adjustment, be convenient to form spiral helicine cutter in the mode of moving dystopy.

Description of drawings

Fig. 1 is front view of the present utility model (but central shaft two end axles bearing wherein partly is cutaway view).

Fig. 2 is the front view of the utility model central shaft.

Fig. 3 is the left view of the utility model central shaft.

Fig. 4 is the right view of the utility model central shaft.

Fig. 5 is the right view of the utility model spacer ring.

Fig. 6 is the front view of the utility model nut.

Fig. 7 is the left view of the utility model nut.

Fig. 8 is the left view of the utility model blade.

Fig. 9 is the side view of the utility model bearing block.

Figure 10 is the half sectional view of the utility model bearing block.

Figure 11 is the vertical view of the utility model bearing block.

Figure 12 removes front view (but bearing block wherein partly is cutaway view) behind the bearing block for the utility model Fig. 1.

Figure 13 removes front view (but bearing block wherein partly is cutaway view) behind the nut for the utility model Figure 12.

The specific embodiment

Below in conjunction with accompanying drawing and preferable feasible embodiment the purpose of this utility model, feature and advantage are done deeply and specific description.

As shown in figure 1 to figure 13, easy replacement structure-improved for a kind of set of knives of the utility model, set of knives has a central shaft 1, central shaft 1 (extremely shown in Figure 4 as Fig. 2) is provided with the axial notch 11 of several spaced sets, several blades 2 on axial notch 11, have been inserted in, the internal diameter of each blade 2 (as shown in Figure 8) is provided with several lobes 21 corresponding to axially prominent bar, at an end of central shaft 1 being that (general habitual standard is the hexagonal shape to the hexagonal shape, can open entire interlocking with spanner, but do not exceed with this shape) a spacer ring 12 join, spacer ring 12 (as shown in Figure 5) axial lock is connected on the central shaft 1, among the figure, the end face of central shaft 1 is provided with four equally spaced fixed hole positions 18, and spacer ring 12 is mat one screw (not shown) interlocking for being provided with four in the centre equidistantly as the perforation 19 of fish-eye shaped at

fixed hole position

18 and 19 of perforation, so, the end face that allows central shaft 1 have spacer ring 12 becomes does not dismantle end, otherwise the other end becomes detachable end; Being a nut 13 interlockings of hexagonal shape, and the two ends of central shaft 1 engage with a

bearing block

16,17 after engaging with a

bearing

14,15 respectively again in the other end of central shaft 1;

Bearing block

16,17 is extremely shown in Figure 11 as Fig. 9; The external diameter of bearing 15 is less than the internal diameter of blade 2, and the internal diameter 10 of nut 13 is also greater than the external diameter of bearing 15, make remove bearing block 17 (as shown in figure 12) and nut 13 (as shown in figure 13) after, just can substitute blade 2, need not to move apart bearing 15.Maximum improvement part of the present utility model that Here it is.

In addition, as Fig. 9 and shown in Figure 10,

bearing block

16,17 is the shape of chamfering among the figure first, that is to say that bearing block is distinguished into upper and lower two halves, each is by a screw interlocking between the two ends of the bearing block of its two halves, when left and right screw is unclamped, just can unclamp fixing to the two-semiaxle bearing, and allow bearing block move apart bearing; But by shown in Figure 10, second bearing block of two side ends is up to be locked on the board (not shown) by the below by another bolt as can be known, so, after unclamping a pair of screw of first bearing block, just can remove the board place with not containing the whole group of bearing block cutter, the process that substitutes blade, just elder generation unclamps nut 13 with spanner and moves apart, and substitutes blade again.

When the knife edge 22 numbers are less than lobe 21 numbers on the blade 2 wherein, can put into a blade 2 every a groove 11, to form the cutter of spiral, wherein among Fig. 8, illustrate: be one to have the blade 2 of four blade cutting edge of a knife or a sword 22, but lobe 21 numbers are 12, that is to say that each knife edge has three lobes can be corresponding, mean that blade can have three different angles to change, if ratio changes therebetween, then its correspondence just can change.

Structure in sum, the utility model utilization enlarges the polarization of central shaft, the one end is maintained static, the other end then becomes to substitute the dismounting end of blade, after allowing internal diameter remove greater than the bearing block of bearing outside diameter and nut in advance, just can leave successively or oppositely reinstall with the blade of internal diameter greater than bearing outside diameter, to form easy-to-dismount set of knives, improve the lobe of blade and the corresponding relation of central shaft groove simultaneously, just can form the key that the adjacent dystopy of blade is adjusted, all be the improvement to this type of cutter, as the mode of ameliorating that is easy to substitute, so good usability can be provided, be one fully with existing different mechanism design.

The above is the detailed description of preferred embodiment of the present utility model; be not to be used for limiting the utility model; all scopes of the present utility model should be as the criterion with the scope of appended claim; the embodiment and the approximate construction of the spirit variation similar with it of all claims all should be contained in the protection domain of the present utility model.

Claims

1. the easy replacement structure-improved of a set of knives, set of knives has a central shaft, central shaft is provided with the axial notch of several spaced sets, several blades on axial notch, have been inserted in, the internal diameter of each blade is provided with several lobes corresponding to axial notch, and an end of central shaft joins with a spacer ring, spacer ring vertically interlocking on central shaft, the other end of central shaft is with a nut interlocking, and the two ends of central shaft engage with a bearing block after engaging with a bearing respectively again;

It is characterized in that: the external diameter of bearing is less than the internal diameter of blade, and the internal diameter of nut is greater than the external diameter of bearing.

2. the easy replacement structure-improved of set of knives as claimed in claim 1, it is characterized in that: wherein knife edge number is less than the lobe number on each blade, puts into a blade every a groove, forms the cutter of spiral.

3. the easy replacement structure-improved of set of knives as claimed in claim 1, it is characterized in that: its bottom bracket is distinguished into upper and lower two halves, each is by a screw interlocking between the two ends of the bearing block of two halves, and the bottom half-bearing seat up is locked on the board by the below by another bolt.