CN2502839Y

CN2502839Y - Device for quick clamp cutter

Info

Publication number: CN2502839Y
Application number: CN 01254447
Authority: CN
Inventors: 李成道
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2001-10-31
Filing date: 2001-10-31
Publication date: 2002-07-31
Anticipated expiration: 2011-10-31

Abstract

The utility model relates to a cutter quick clamping device, which comprises mandrel parts and inner casing positioned out of the mandrel parts and is characterized in that: the centers of the mandrel bodies of the mandrel parts are provided with mounting grooves; the inner surfaces of the inner casing are provided with notches matching the mounting grooves of the mandrel bodies and at least locking steps of steps to make the inner casing axially connected with the mandrel parts; the upper parts of the mandrel bodies are sleeved with reciprocating levers; gaps are provided between the lower parts of the reciprocating levers and the inner surfaces on the upper parts of the inner casing; steel cable baffle rings are arranged in the gaps to make the inner casing rotate cycling the mandrel parts; outer casing composed of spacer sleeves and torsional sleeves is provided out of the inner casing to drive the inner casing to rotate through the close combination of the torsional sleeves and the inner casing. The utility model can appropriately fix the blades and does not need to use hand to take out the blades and use tools to fix the blades when replacing the blades, thereby simplifying the working procedure and increasing the service life of the electric tools.

Description

Fast fixture of cutting tool

Technical field

The utility model relates to a kind of clamping device, relates in particular to a kind of fast fixture of cutting tool that is used for the electric tool fixed cutting tool.

Background technology

The prior art electric tool adopts screw to tighten mortgage by instrument usually and make it fixing on blade for the clamp mechanism such as cutters such as blades, though this clamping way is comparatively simple, still has following defective in actual use:

1. because the prior art clamping device adopts screw to fix, and clamping operation in operation must just can finish by instruments such as screwdrivers, the operation of therefore changing cutter and clamp-on tool is comparatively loaded down with trivial details;

2. because the prior art clamping device adopts the fixing mode of screw mortgage, the electric tool of this fixed cutting tool makes cutter can not carry out cutting work because of vibration makes the screw of fixed cutting tool become flexible in operation;

3. because the prior art clamping device adopts the fixing mode of screw mortgage, in cutting operation, often need to change cutter because of the wearing and tearing of cutter, the variation of cutting object, therefore the screw thread of screw weares and teares (being the sliding tooth of screw) easily, thereby influences the life-span of electric tool.

4. because the prior art clamping device must take off cutter with hand when changing cutter, and this moment is very high through its surface temperature of blade of the cutting that runs up, therefore easily operating personnel's hand is scalded.

Summary of the invention

The purpose of this utility model is to provide a kind of improved fast fixture of cutting tool, it is fixed blade rightly, and does not need to take out blade with hand when changing blade, also need not to use the instrument fixed blade, thereby not only simplify working procedure, and improved the service life of electric tool.

The purpose of this utility model is achieved in that

A kind of fast fixture of cutting tool, comprise, the cover that heart shaft part is outer with being positioned at heart shaft part, be characterized in: the axle body middle part of described heart shaft part is provided with a mounting groove, cover axially is connected with heart shaft part and around the heart shaft part rotation in described, is provided with one and the suitable notch of axle body mounting groove and the locking step of at least one step at inner surface of inner race.

In above-mentioned fast fixture of cutting tool, wherein, described axle body is convex shape in the lower external face of this tubular mandrel body, in a tubular form at this sheathed reciprocating lever in axle body top; Be set in described outside the bottom of axle body, inner surface of cover is the locking step that has the suitable concave shape of the axle body exterior structure of convex shape with its underpart in this, and cover and locking step thereof comprise axle body bottom within it in this.

In above-mentioned fast fixture of cutting tool, wherein, between the reciprocating lever bottom of described heart shaft part and interior cover top inner surface, have the gap, in this gap, be provided with an elastic spring.

In above-mentioned fast fixture of cutting tool, wherein, in described, also be provided with an overcoat outside the cover, this overcoat is made up of with turning round to overlap interstage sleeve, turns round cover and combines and drive its rotation closely with overcoat.

In above-mentioned fast fixture of cutting tool, wherein, in described tubular axle body upper tube, a pin is set, be provided with a spring that is used for to the bayonet lock nail above the pin at this.

In above-mentioned fast fixture of cutting tool, wherein, described heart shaft part axle body lower external face is inverted stairstepping, and this axle body lower inner surface and blade handle are suitable, and the inner surface of described interior cover is and the suitable stairstepping of stairstepping is inverted in axle body bottom.

In above-mentioned fast fixture of cutting tool, wherein, on the appropriate position of described axle body and reciprocating lever, be equipped with an identical shaped pin-and-hole, a resilient key is set in pin-and-hole; Promptly be positioned at a sheathed torsion spring on the cover in described reciprocating lever bottom; The appropriate position of cover bottom is provided with a jack in described; One end of described torsion spring is arranged in the interior resilient key of pin-and-hole, in the jack that overlaps in the other end of this torsion spring is arranged on.

In above-mentioned fast fixture of cutting tool, wherein, extend to form a back-up ring downward vertically at described interstage sleeve lower surface, described turning round is set under the interstage sleeve and outside the back-up ring, turns round the cover lower end and inwardly forms an internal shoulder, and this internal shoulder and interior cover bottom are identical closely.

The utility model fast fixture of cutting tool makes it to compare with the prior art clamping device owing to adopted above-mentioned technical scheme, has following advantage and good effect:

1. the utility model is owing to adopted above-mentioned clamping device, therefore the tool free of clamping blade just can be finished in operation, thereby simplified the operation sequence of changing cutter and clamp-on tool, and, not only cutter can not become flexible, and has improved because of the wearing and tearing of no screw and screw thread the service life of electric tool;

2. the utility model is settled an elastic spring owing to be provided with the gap between heart shaft part reciprocating lever bottom and interior cover top inner surface in it, thus reciprocating lever can not from interior cover, extract, and make between reciprocating lever and the interior cover rotation flexible;

3. the utility model is owing to be provided with a pin and spring in the axle body, and when clamping device unclamped, spring discharged, and made outside the blade device for ejecting, and operating personnel need not use hand when therefore changing blade, thereby hand can not scalded;

The utility model since overcoat by interstage sleeve with turn round cover and forms, thereby make it and can live dirts such as dust by shelves, overlap in driving easily again and rotate to suitable position.

Description of drawings

By the description of a following embodiment to the utility model fast fixture of cutting tool, can further understand the purpose of this utility model, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:

Fig. 1 is the decomposition texture schematic diagram according to the fast fixture of cutting tool that the utility model proposes;

Fig. 2 is the utility model fast fixture of cutting tool sectional structure schematic diagram;

Fig. 3 is the sectional structure schematic diagram that Fig. 2 rotates 90 degree;

Fig. 4 be among Fig. 3 A-A to the sectional structure schematic diagram;

Fig. 5 be among Fig. 3 B-B to the sectional structure schematic diagram;

Fig. 6 is the lower surface structural representation of the utility model fast fixture of cutting tool when being in releasing orientation;

Fig. 7 is the lower surface structural representation of the utility model fast fixture of cutting tool when being in clamped condition.

The specific embodiment

See also Fig. 1 to shown in Figure 5, the utility model fast fixture of cutting tool is because the device that in the electric tool cutter such as blade is clamped, this clamping device comprises, one heart shaft part 10, be arranged on heart shaft part 10 bottoms one in cover 20, and heart shaft part 10 bottoms and interior cover 20 comprised within it overcoat 30.Wherein:

Described heart shaft part 10 is made up of axle body 11 and the reciprocating lever 12 that is set in outside axle body 11 tops.This axle body 11 in a tubular form, its top and middle part are round tube shapes, this reciprocating lever 12 just be set in tubular axle body 11 in, outside the top, and be convex shape in the lower external face of this tubular mandrel body 11, axle body 11 middle parts are provided with a mounting groove 110;

Cover 20 is arranged on the bottom of heart shaft part 10 in described, in cover 20 axially be connected with heart shaft part 10, and rotate around heart shaft part 10, interior cover 20 inner surfaces be provided with one with the suitable notch 201 of the mounting groove 110 of axle body 11, the shape of the inner surface of interior cover 20 forms and the suitable locking step 202 that is concave shape of axle body 11 lower external face convex shape, this locking step 202 has a step at least, overlap in 20 in thereby cover 20 is included in axle body 11 bottoms in making, in the utility model, heart shaft part 10 axle bodies 11 lower external face are inverted stairstepping, axle body 11 lower inner surface and blade handle 40 are suitable, and blade handle 40 can be embedded in wherein, what adapt therewith is that the inner surface of interior cover 20 also is with axle body 11 bottoms is inverted the suitable stairstepping of stairstepping;

Between reciprocating lever 12 bottoms of described heart shaft part 10 and interior cover 20 upper inside surface, has the gap, in this gap, be provided with an elastic spring 21, the setting of this elastic spring 21, reciprocating lever 12 and interior cover 20 are combined, elastic spring 21 can bear the pressure from reciprocating lever 12, make reciprocating lever 12 at will from interior cover 20, not extract again, make to have flexible rotation characteristics between reciprocating lever 12 and the interior cover 20 simultaneously;

In described tubular axle body 11 upper tubes, a pin 111 is set, it below the pin 111 a cutter knife handle 40, on pin 111, be provided with a spring 112 that is used for to bayonet lock nail 111, when blade is clamped, spring is compressed, and clamping device is when opening, and spring discharges, thereby blade is ejected outside the utility model clamping device;

At the sheathed torsion spring 22 in described reciprocating lever 12 bottoms, this torsion spring 22 is positioned on the cover 20, in order to settle torsion spring 22, appropriate position at described axle body 11 and reciprocating lever 12 is provided with a pin-and-hole 113, one resilient key 114 is set in this pin-and-hole 113, and is provided with a jack 23 in the appropriate position of interior cover 20 bottoms, an end of torsion spring 22 is arranged in the pin-and-hole 113, in the jack 23 of cover 20, therefore cover 20 just can clamp and pin blade handle 40 in the rotation in the other end of torsion spring 22 was arranged on.

Described overcoat 30 is arranged on outside heart shaft part 10 bottoms and the interior cover 20, it is by interstage sleeve 31 and turn round cover 32 and form, this interstage sleeve 31 is the disk with hole, extends to form a back-up ring 311 downward vertically at disc interstage sleeve 31 lower surfaces, and this is turned round cover 32 and is arranged on outside interstage sleeve 31 times and the back-up ring 311; Turn round cover 32 lower ends and inwardly form an internal shoulder 321, this internal shoulder 321 is identical closely with interior cover 20 bottoms; From as can be known above-mentioned, by interstage sleeve 31 with turn round cover 32 overcoats of forming 30 and can live dirts such as dust by shelves, overlap 20 in driving easily again and rotate to suitable position.

The utility model is operation like this:

See also shown in Figure 6, when inserting blade 40 in the utility model clamping devices when electric tool preparation cutting sanction sawn timber material, rotation is turned round cover 32 and is driven interior cover 20 rotations, the breach 201 of cover 20 aligns with axle body 11 breach 110 in making, and blade handle 40 is inserted in the axle body 11 from interior cover 20 breach 201 and axle body 11 breach 110;

See also shown in Figure 7, after in blade handle 40 is inserted in axle body 11, because the effect of the active force of reciprocating lever 12 bottom torsion springs 22, the breach 201 of cover 20 staggers with axle body 11 breach 110 in making, to make blade handle 40 be positioned at axle body 11 securely thus, the instrument that drives so just can cut the work of cutting out the sawn timber material;

In the time of need changing cutter when the changes in material of cutting sanction saw or because of tool wear, pushing reciprocating lever 12, make it to form one of spring 112 is applied power, promoting pin 111 thus moves forward, active force because of spring 112, and blade is ejected outside the utility model clamping device, so thing needs with hand cutting tool to be extracted.

In sum, therefore the utility model fast fixture of cutting tool is changed the cutter tool free and just can be finished owing to adopted described clamping device, thus the service life that simplifies procedures and improve electric tool; Simultaneously, owing between reciprocating lever and interior cover, settle an elastic spring, reciprocating lever and interior cover are rotated flexibly; And because pin and spring be set in the axle body, changing blade need not just can be with outside the blade device for ejecting with hand; In addition, because the special composition of overcoat, making it can the shelves ash, cover rotation in driving easily again; Therefore very practical.

Claims

1. a fast fixture of cutting tool comprises, heart shaft part (10) and be positioned at the outer cover (20) of heart shaft part (10) is characterized in that:

Axle body (11) middle part of described heart shaft part (10) is provided with a mounting groove (110), cover (20) axially is connected with heart shaft part (10) and around heart shaft part (10) rotation in described, is provided with one and the suitable notch (201) of axle body (11) mounting groove (110) and the locking step (202) of at least one step at interior cover (20) inner surface.

2. fast fixture of cutting tool as claimed in claim 1 is characterized in that: described axle body (11) is convex shape in the lower external face of this tubular mandrel body (11), in a tubular form at this axle body (11) sheathed reciprocating lever in top (12); Cover (20) is arranged on outside the bottom of axle body (11) in described, should in the inner surface of cover (20) be the locking step (202) that has the suitable concave shape of axle body (11) external structure of convex shape with its underpart, cover (20) and locking step (202) thereof comprise axle body (11) bottom within it in this.

3. fast fixture of cutting tool as claimed in claim 1 or 2 is characterized in that: have the gap between reciprocating lever (12) bottom of described heart shaft part (10) and interior cover (20) upper inside surface, be provided with an elastic spring (21) in this gap.

4. fast fixture of cutting tool as claimed in claim 1, it is characterized in that: in described, also be provided with an overcoat (30) outside the cover (20), this overcoat (30) is by interstage sleeve (31) and turn round cover (32) and form, and turns round cover (32) and combines and drive its rotation closely with overcoat (30).

5. fast fixture of cutting tool as claimed in claim 1 is characterized in that: in described tubular axle body (11) upper tube a pin (111) is set, is provided with a spring (112) that is used for to bayonet lock nail (111) on this pin (111).

6. fast fixture of cutting tool as claimed in claim 1, it is characterized in that: described heart shaft part (10) axle body (11) lower external face is inverted stairstepping, this axle body (11) lower inner surface and blade handle (40) are suitable, and the inner surface of described interior cover (20) is and the suitable stairstepping of stairstepping is inverted in axle body (11) bottom.

7. fast fixture of cutting tool as claimed in claim 1 or 2, it is characterized in that: on the appropriate position of described axle body (11) and reciprocating lever (12), be equipped with an identical shaped pin-and-hole (113), a resilient key (114) is set in pin-and-hole (113); Promptly be positioned at a sheathed torsion spring (22) on the cover (20) in described reciprocating lever (12) bottom; The appropriate position of cover (20) bottom is provided with a jack (23) in described; One end of described torsion spring (22) is arranged in the interior resilient key (114) of pin-and-hole (113), and the other end of this torsion spring (22) is arranged in the jack (23) of interior cover (20).

8. fast fixture of cutting tool as claimed in claim 1, it is characterized in that: extend to form a back-up ring (311) downward vertically at described interstage sleeve (31) lower surface, the described cover (32) of turning round is arranged under the interstage sleeve (31) and outside the back-up ring (311), turn round cover (32) lower end and inwardly form an internal shoulder (321), this internal shoulder (321) is identical closely with interior cover (20) bottom.