CN201030600Y

CN201030600Y - Knife pivot for planing wood

Info

Publication number: CN201030600Y
Application number: CNU2007201476311U
Authority: CN
Inventors: 胡登富
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-24
Filing date: 2007-04-24
Publication date: 2008-03-05
Anticipated expiration: 2017-04-24

Abstract

The utility model discloses a cutter shaft for wooden plane, relating to a cutlery for wooden plane, which is designed for resolving the problem that the prior cutter shaft is easy to open rifts. The cutter shaft for wooden plane comprises a main cutter shaft body and blades presenting prescheduled state fixed around the main cutter shaft body with bolts, wherein the rest surface of each blade set for fixing blades on the main cutter shaft body is provided with screw holes, the brink of each blade is provided with a blade edge, the middle of each blade is provide with a cone through a hole, and recesses are formed between the rest surfaces of the blade sets. The tops of cone through holes in blades are arranged with expanding shoulders. The cone tips of bolts corresponding to the expanding shoulders are arranged with flanges. The definite locating effect is realized through that bolts are rotated by flanges sticking up and stopping at expanding shoulders when blades are fixed with bolts. The blades opening rifts for being locked and pressed extremely is prevented effectively, and the locking and pressing area by bolts is increased through flanges sticking up expanding shoulders, thereby prolonging the service life and steadying the locking and pressing state.

Description

The planing wood cutter shaft

Technical field

The utility model relates to a kind of cutter, particularly a kind of planing wood cutter.

Background technology

Planing wood generally comprises the cutter shaft main body with cutter shaft, and be mounted on the blade that this cutter shaft main body periphery is the predetermined arrangement kenel, the integrated positioning kenel of wherein said blade has a variety of, concrete structure kenel as shown in Figure 1 to Figure 3, offer taper perforation 21 on each blade 20 of this cutter shaft main body 10, this cutter shaft main body 10 then is provided with screw 12 for each set of blades of blades 20 assemblings by on the face 11, and the bolt 30 by taper termination 31 is fixed on each blade 20 on the cutter shaft main body 10; This existing structure kenel finds still to exist following problems in actual use experience:

21 the two the inclined-plane effects of urging (shown in the hollow arrow among Fig. 3) because the taper termination 31 of described bolt 30 by this bolt 30 and the taper of blade 20 are bored a hole impel blade 20 to reach stationary state, thereby blade 20 are fixed on the cutter shaft main body 10.Yet, because the inclined-plane during this lock group bolt 30 urges the clear and definite anchor point of state shortcoming, the user is often for asking the fastening of blade that the excessive situation of the application of force can take place, this moment is because the suitable weakness of remaining area between the perforation 21 of the taper of blade 20 and blade 20 peripheries, urge active force and produce slight crack because can't bear to bear these bolt 30 excessive inclined-planes easily, this slight crack may be quite trickle, perhaps, the user can not find then and there, but it is so very big for the negative effect during running on the cutter shaft main body 10, this blade 20 that has produced slight crack is damaged the reaction force because of can't bear cutting workpiece the time, cause cutting operation to produce flaw, also can and blade be must change in advance, and then trouble and inconvenience caused to operating personnel because of this blade shortening in 20 service lifes.

On the other hand, also there is another problem in the existing structure of this cutter shaft main body 10, as shown in Figure 1, because cutter shaft main body 10 peripheries respectively are provided with the set of blades of screw 12 and are equipped with the recessed portion 13 that allows of tangentially running through by between the face 11, this is recessed to allow portion 13 will cause flow-disturbing phenomenon when cutter shaft main body 10 is rotated at a high speed, so cause the wood chip that is produced in the planing process, will be because of recessedly allowing portion 13 footpath Zhou Fangxiang drift toward cutter shaft main bodys 10 along this, cause wood chip to enter down once again in one blade planing stroke, or spray is hit in the surface of the work of having planed and is caused surface of the work the white point flaw to occur, so produce the bad problem of crudy, this obviously also is to be worth relevant industry to make great efforts improved problem.

So, with cutter shaft and the existing problem points of combined type blade structure thereof, how to develop a kind of structure that has more practicality at above-mentioned existing planing wood, be the ardent hope of consumer institute, also be target and the direction that relevant industry must be made great efforts the research and development breakthrough.

The utility model content

The purpose of this utility model is to provide a kind of planing wood cutter shaft that is difficult for cracking, and uses the service life of cutter shaft to prolong planing wood.

For reaching above-mentioned purpose of design, the utility model adopts following technical scheme: this planing wood cutter shaft cutter shaft main body, and be fixed on the blade that this cutter shaft main body periphery is the predetermined arrangement kenel; Wherein, be provided with screw for each fixing set of blades of blade by face on this cutter shaft main body, the avris tool blade of each blade, the blade middle part is provided with taper perforation, bolt with taper termination is fixed on blade in the screw by this perforation, and each set of blades is formed with recess by between the face; The top of taper perforation is provided with the hole enlargement shoulder on the described blade; Corresponding this hole enlargement shoulder in the taper termination of described bolt is provided with flange part.

By the described planing wood cutter shaft of technique scheme, when bolt lock group blade, the flange part of bolt supports the hole enlargement shoulder that terminates in blade, thereby the spiral shell that makes bolt changes a kind of clear and definite locating effect of acquisition, and a side can be formed with the gap between the taper termination of this bolt and the perforation of blade taper, make and the excessive state of power can not occur too oppressing between the perforation of this taper termination and taper, can prevent effectively that blade is oppressed excessive and produce slight crack, can also be by the contact area against increase bolt and blade of described flange part and hole enlargement shoulder, make that the pressure that is subjected on the unit plane is less, and then prolonged the service life of this planing wood with cutter shaft, and stationary state is more firm.

Description of drawings

Fig. 1 is the stereogram of existing planing wood with cutter shaft;

Fig. 2 is the partial enlarged drawing of blade and bolt among Fig. 1;

Fig. 3 is the local assembled sectional view of existing planing wood with cutter shaft;

Fig. 4 is the stereogram of the utility model planing wood with cutter shaft;

Fig. 5 is the partial enlarged drawing of blade and bolt among Fig. 4;

Fig. 6 is the local assembled sectional view of the utility model planing wood with cutter shaft;

Fig. 7 is the utility model planing wood another structure chart with cutter shaft;

Fig. 8 is the local enlarged diagram of Fig. 7;

Fig. 9 is the recessed enlarged diagram that allow portion one end be provided with retaining edge portion of the utility model planing wood with cutter shaft.

The specific embodiment

The top that the utility model planing wood is bored a hole by taper on blade with cutter shaft is provided with the hole enlargement shoulder; And corresponding this hole enlargement shoulder in the taper termination of bolt is provided with flange part, makes the spiral shell of bolt change and obtains a kind of clear and definite locating effect.Below in conjunction with accompanying drawing the utility model planing wood is described in detail with cutter shaft.

Fig. 4 to Fig. 6 is the preferred embodiment of the utility model planing wood with cutter shaft, and this embodiment only for the usefulness of explanation, is not subjected to the restriction of this structure at the protection domain of patent application.Described planing wood comprises a cutter shaft main body 40 with cutter shaft A, and is fixed in the blade 50 that these cutter shaft main body 40 peripheries are the predetermined arrangement kenel; Wherein, this cutter shaft main body 40 is provided with screw 42 for each set of blades of blade 50 assemblings by face 41, the avris tool blade 51 of each blade 50 (blade as present embodiment is that four avris all have blade), the middle part of blade 50 is provided with taper perforation 52, bolt 60 by having taper termination 61 is fixed in this set of blades by the set screw 42 of face 41 with this blade 50, and each set of blades also is formed with recess 43 (as the cancave cambered surface kenel, as shown in Figure 9) by between the face 41; In addition, each set of blades also is provided with extruding point C1, a C2 by a side of face 41, lean on when being used for for blade 50 assemblings spacing, thereby played orientation (as shown in Figure 5 and Figure 6), produce rotation to prevent this blade 50.Be provided with hole enlargement shoulder 53 with cutter shaft on the taper of blade 50 52 tops of boring a hole by the utility model planing wood; And be provided with the flange part 62 of a hole enlargement in the taper termination of bolt 60 61 correspondences.

By above-mentioned structural design, as shown in Figure 6, during these bolt 60 fixed blades 50, by the inclined-plane guiding of taper termination 61 with taper perforation 52, and set of blades is by the abutment action of face 41 set extruding point C1, to make the right-hand skew in the figure of this blade 50, make this a taper termination 61 and a side of taper perforation 52 form gap 80, historical facts or anecdotes with novel planing wood with too urgent state not occurring between the taper termination 61 of the bolt in the cutter shaft 60 and the blade 50 tapers perforation 52, when this bolt 60 further is locked, be to support downwards by the flange part set up 62 to terminate in the bore a hole hole enlargement shoulder 53 on 52 tops of blade 50 tapers and make the spiral shell commentaries on classics state of bolt 60 obtain a kind of rigid, (that is the assembler can know when screw-in group bolt and determines that it locks clear and definite locating effect, and can't continue swivel bolt), and be the plane state that urges between described flange part 62 and the blade 50, locate more firm.

Wherein, the described hole enlargement shoulder 53 of being located at blade 50 tapers perforation 52 can be the anchor ring shape against the enforcement kenel that cooperates with the flange part 62 of being located at bolt 60 taper terminations 61.This anchor ring has the simple benefit of processing with respect to other shapes.

Wherein, each set of blades of described cutter shaft main body 40 also can be provided with retaining edge portion 44 by formed recess 43 1 sides between the face 41, when cutter shaft main body 40 is rotated at a high speed, utilize described retaining edge portion 44 to form blocking functions, to prevent that wood chip from entering down in one blade planing stroke once again, reaches the effect that promotes the planing operation quality.

As shown in Figure 7, described blade 50 tapers are bored a hole and can also be organized the metallic gasket 70 of establishing a tool ductility between the flange part 62 of the hole enlargement shoulder 53 on 52 tops and bolt 60 taper terminations 61, establish this pad 70 by group, can reach the effect that prevents that bolt 60 is loosening; Periphery 71 (detailed shown in the 8th figure) that can also be by pad 70 is extended when the downward packing of the flange part 62 of bolt and is out of shape in the gap of clogging between this flange part 62 and hole enlargement shoulder 53 sidewalls 54, thereby produce the effect that structure strengthens, with the combining structure intensity of further enhancement blade 50.

The utility model planing wood is promoted as follows with the cutter shaft effect:

As shown in Figure 6, the utility model mainly by planing wood with the combined type blade 50 set tapers of the cutter shaft hole enlargement shoulder 53 that 52 tops are provided with of boring a hole, and lock is compeled the taper termination 61 of the bolt 60 of blade 50, the flange part 62 of the corresponding hole enlargement that is provided with; When these bolt 60 lock group blades 50, supporting the hole enlargement shoulder 53 that terminates in blade 50 by flange part 62 makes the spiral shell commentaries on classics of bolt 60 obtain a kind of rigid, clear and definite locating effect, and a side can be formed with gap 80 between the taper termination 61 of the bolt in the utility model 60 and the perforation 52 of blade 50 tapers, so constitute between this taper termination 61 and the taper perforation 52 and too urgent state can not occur, like this existing structure in the contrast background technology, design of the present utility model can prevent effectively that blade from being locked compels excessive and produces slight crack; On the other hand, also can be by the location area of compeling blade 50 mutually against increase bolt 60 locks of described flange part 62 with hole enlargement shoulder 53, make that the pressure that is subjected on the unit plane is less, and then reach and prolong blade service life, and it is more firm, durable to make lock compel state.

As shown in Figure 9, each set of blades of cutter shaft main body described in the utility model is formed with retaining edge portion 44 by formed recess 43 1 sides between the face 41, when cutter shaft main body 40 when the planing process is rotated at a high speed, utilize the described edge portion 44 that respectively keeps off to form blocking function, to prevent that effectively wood chip from entering down in one blade planing stroke once again or the spray of fleeing about is carelessly hit in finishing the planing surface of the work, to prevent that surface of the work from producing white point, solve planing wood another problem of cutter shaft structure that makes in the background technology, reach the effect that reduces the workpiece defect rate, promotes the planing operation quality.

As shown in Figure 7 and Figure 8, bore a hole between the flange part 62 of the hole enlargement shoulder 53 on 52 tops and bolt 60 taper terminations 61 also at blade 50 tapers that group is provided with tool ductility pad 70, can reach the effect that prevents that bolt 60 is loosening; And can be when the downward packing of the flange part 62 of bolt by these pad 70 peripheries 71, extended and be out of shape in the gap of clogging between this flange part 62 and hole enlargement shoulder 53 sidewalls 54, thereby the generation structural re-enforcement is with the combining structure intensity of further enhancement blade 50.

The foregoing description is described only for specifying the utility model, though describe by specific term in the literary composition, when not limiting scope of patent protection of the present utility model with this; The personage who is familiar with this technical field is when can be after understanding spirit of the present utility model and principle, it is changed and revise and reaches same purpose, and these changes and modification all should be covered by claim and define in the category.

Claims

1. a planing wood cutter shaft comprises the cutter shaft main body, and is fixed on the blade that this cutter shaft main body periphery is the predetermined arrangement kenel; Wherein, be provided with screw for each fixing set of blades of blade by face on this cutter shaft main body, the avris tool blade of each blade, the blade middle part is provided with taper perforation, bolt with taper termination is fixed on blade in the screw by this perforation, and each set of blades is formed with recess by between the face; It is characterized in that:

The top of taper perforation is provided with the hole enlargement shoulder on the described blade; Corresponding this hole enlargement shoulder in the taper termination of described bolt is provided with flange part.

2. according to the described planing wood cutter shaft of claim 1, it is characterized in that: the described hole enlargement shoulder of being located at the perforation of blade taper is that the anchor ring shape is against cooperating kenel with the flange part of being located at bolt taper termination.

3. according to the described planing wood cutter shaft of claim 1, it is characterized in that: described each set of blades is provided with retaining edge portion by formed recess one side between the face.

4. according to the described planing wood cutter shaft of claim 1, it is characterized in that: the pad that is provided with a tool ductility between the hole enlargement shoulder on described blade taper perforation top and the flange part of bolt taper termination.