CN1616171A

CN1616171A - Chuck stracture

Info

Publication number: CN1616171A
Application number: CN 200310113436
Authority: CN
Inventors: 林原禾
Original assignee: QUANBAO INDUSTRY Co Ltd
Current assignee: QUANBAO INDUSTRY Co Ltd
Priority date: 2003-11-11
Filing date: 2003-11-11
Publication date: 2005-05-18

Abstract

The chuck structure includes one main body with lower section for the cutter positioning part to be penetrated in coaxially, at least one hole on the side wall for a stopping bead to be set in and inserted inside the slot in the cutter positioning part and one raised part inside the cutting inserting hole for embedding into the longitudinal slot in cutter positioning part; one coaxial movable sleeve around the lower section of the main body with one bead withdrawing slot in the inner wall; one telescopic shell around the movable sleeve; one fixing back casing to match the upper section of the main body; and one spring set between the movable sleeve and the fixing back casing. The present invention has simplified chuck structure, can locate the cutter conveniently and quickly and is suitable for high torque drilling operation.

Description

Chuck structure

Technical field

The present invention relates to the chuck structure of a kind of clamping drilling tool (as drill bit), this chuck structure is broken through the pattern of three-jaw clipping cutter in the past, change with control steel ball advance and retreat and hold or pine oil, reach that to simplify chuck structure, cutter assembling and location fast convenient and improve purpose such as cutter torsion to cooperate cutter.

Background technology

The chuck structure of known clamping drilling tool (as drill bit), all be connected in the line shaft of transmission device with a body, be provided with several oblique guide holes in this body, establish a jaw in each oblique guide hole, and be located at this external driving ring with one and control this jaw and in body, advance and retreat and come clipping or loose from a cutter, and when the transmission device startup, its line shaft drives this body, jaw, driving ring and cutter and rotates synchronously.

Above-mentioned chuck structure, its intrinsic oblique guide hole is concerning the strength of the moving direction and the clipping cutter of jaw, so its accuracy requirement is high, cost of manufacture is higher relatively; And the jaw clipping is in the body portion of cutter, if when the chance working resistance becomes big, occur the phenomenon that jaw and cutter skid probably, therefore many designs for raising clip type chuck torsion are arisen at the historic moment, but many designs make chuck structure more and more complicated, and manufacturing cost is also more and more high.

Summary of the invention

The present invention is for the structure of getting rid of three-pawl type chuck described in the prior art has the cost of manufacture height, jaw and problems such as cutter skids, torsion reduction when working resistance increases, the present invention attempt overcomes above problem with a tactic pattern that is different from traditional three-jaw chuck fully, and reaches that to simplify chuck structure, cutter assembling and location fast convenient and improve purpose such as cutter torsion.

For achieving the above object, the present invention adopts following technical scheme: a kind of chuck structure mainly comprises:

One body, epimere portion establishes a power axis hole, and hypomere portion establishes a cutter and wears and hold the hole, closes the footpath for the location division of a cutter and is through at wherein;

One cutter axial positioning structure, in body relatively this cutter wear the wall of holding the hole and establish at least one hole, fill out in this hole and establish a stopper pearl, this stopper pearl can protrude from this cutter by this hole and wear and hold in the hole; At least one recessed pearl groove is established on the surface, location division of this cutter, and the part beading of this stopper pearl can snap in this pearl groove;

One cutter rotation direction is strengthened location structure, wears the hole wall of holding the hole at least one bossy body that is shaped in this cutter, and the open cannelure in a top is established in the location division of this cutter, and this bossy body can embed in this cannelure;

One control cover group mainly comprises a movable sleeve and a flexible shell; This activity fit footpath pivot is placed in the hypomere portion of this body, and the bottom also gives block by the block body of this body tip, and this movable sleeve inwall ring is established a bead returning groove; Should be placed in this movable sleeve outside by flexible shell tight fit pivot.

The progressive effect of invention:

The present invention proposes a unprecedented novel clip designs, breaks through the chuck technology of prior art with three-jaw clipping aligned cutting tool, has got rid of the problem that is proposed in the prior art, and the simplification of whole chuck structure, and manufacturing cost can reduce; Cutter assembling and location can be finished to push away the contract action of shell of pulling, convenience is quick and the cutter positioning is certain, cutter of the present invention is axially reached the rotation direction strong fix and can be improved torsion, when cutter chance working resistance becomes big, this body can drive effectively still that cutter rotates and the situation that can not skid is applicable to the boring work of high torsion.

Description of drawings

Fig. 1: three-dimensional exploded view of the present invention.

Fig. 2: combination appearance figure of the present invention.

Fig. 3: profilograph of the present invention ().

Fig. 4 A: profilograph of the present invention (two).

Fig. 4 B: along continuing the action schematic diagram that Fig. 4 A is painted.

The 5-5 profile of Fig. 5: Fig. 3.

The specific embodiment

Identical mark means identical object in following comment and the diagram.

The present invention comprises:

One body 10, as Fig. 1, Fig. 2, Fig. 4 A, its central authorities run through with axis hole, the inwall in hole is to internal shaping one flange 11, with this axis hole is divided into upper and lower two sections portions, epimere portion is a power axis hole 12, and hole wall is established screw thread and is used for being connected with the line shaft (figure does not show) of transmission device, hypomere portion is that cutter is worn and held hole 13, can close the footpath for the location division 81 of a cutter 80 and be through at wherein; This cutter is worn and is held the nearly open end hole wall rings down in hole 13 and establish a baffle ring 50, and drilling cuttings or dust infiltrate body 10 inside when preventing cutter 80 work;

One cutter axial positioning structure, as Fig. 1, Fig. 2, Fig. 4 A, be located at this cutter and wear the wall of holding hole 13, at least one element 20 that can radially move back and forth along this wall, and the footpath when inwardly moving to extreme position the part of this element 20 protrude from this cutter and wear and hold in the hole 13; The embodiment of the invention is worn the wall of holding hole 13 in body 10 relative these cutters and is established at least one hole 14, fill out in this hole 14 and establish a stopper pearl 20, this hole 14 has radially enlarged variation from inside to outside, thereby stopper pearl 20 is inserted in the outer end by the hole, and stopper pearl 20 is worn the block of appropriateness when holding hole 13 in protruding from cutter by the inner in hole, prevent that the pearl body from being dropped by the inner in hole; At least one recessed pearl groove 82 is established on 81 surfaces, location division of this cutter 80, makes location division 81 penetrate this cutter and wears when holding in the hole 13, and the part beading of this stopper pearl 20 is snapped in this pearl groove 82, according to this with cutter 80 axial location;

One cutter rotation direction is strengthened location structure, as Fig. 1, Fig. 2, Fig. 3, Fig. 5, wear the be shaped bossy body 15 of at least one strip of the hole wall of holding hole 13 in this cutter, the open cannelure 83 in a top is established in the location division 81 of this cutter 80, make this location division 81 penetrate this cutter and wear when holding hole 13, this bossy body 15 is embedded in this cannelure 83;

One control cover group as Fig. 1, Fig. 2, Fig. 4 A, comprises fixedly back cover 48 of a movable sleeve 40, one flexible shell 43, a spring 45 and; This movable sleeve 40 closes the footpath pivot and is placed in the hypomere portion of this body 10, and the bottom also gives block by the block body 16 of these body 10 ends, and these movable sleeve 40 inwall rings are established a bead returning groove 42; The shell 43 tight fit pivots that should stretch are placed in the outside of this movable sleeve 40, are a body that is available for users to grip; Fixedly back cover 48 tight fit pivots are placed in this body 10 epimere portions, and coating the epimere portion surface of this flexible shell 43, in movable sleeve 40 and fixedly establish this spring 45 between the back cover 48, this spring 45 provides this movable sleeve 40 1 toward the normality strength that presses down, make the inwall of this movable sleeve 40 push against this stopper pearl 20, make its radially convex wear for this cutter and hold hole 13.

Clip and loose from cutter 80, as Fig. 4 B, the user up pushes away and pulls out this flexible shell 43, this movable sleeve 40 is driven up by flexible shell 43 and moves, should flexible shell 43 tops touch and support this fixedly back cover 48 and during by block, 42 pairs of this bead returning grooves should stopper pearl 20, provides stopper pearl 20 radially to recess cutter and wears the space of holding hole 13; The location division 81 of cutter 80 is penetrated this cutter wears and holds in the hole 13, this location division 81 can promote this stopper pearl 20, it radially is retracted in this bead returning groove 42, wear for to be positioned 81 to close to wear and hold in the hole 13 in whole cutter, loosen this flexible shell 43, these spring 45 elasticity are released and can be promoted movable sleeve 40 and flexible shell 43 resets, and the movable sleeve 40 that resets goes in the pearl groove 82 of cutter 80 its convex clip stopper pearl 20 radial push, and this cutter 80 is axially located.Otherwise, loose also up pushing away to pull out this flexible shell 43 from cutter 80, down pull out cutter 80 again and get final product.

The present invention proposes a unprecedented clip designs scheme, breaks through the chuck technology of prior art with three-jaw clamping aligned cutting tool, has got rid of the problem that is proposed in the prior art, and the simplification of whole chuck structure, and manufacturing cost can reduce; Cutter assembling and location can be finished to push away the contract action of shell 43 of pulling, and be fast convenient and the cutter positioning is certain.Rotation direction location structure of the present invention is embedded in the cannelure 83 of cutter 80 with the bossy body 15 of strip, this bossy body 15 and cannelure 83 can be worn the axial length of holding hole 13 and cutter positioning portion 81 according to cutter and extend as much as possible, phase is with the working resistance of the enough rotation direction position limiting structure antagonism cutters 80 of a length, when axially being reached the rotation direction location, cutter 80 firmly promptly can improve torsion, when cutter chance working resistance becomes big, this body 10 can drive effectively still that cutter 80 rotates and the situation that can not skid is applicable to the boring work of high torsion.

Though this case is to do explanation with a most preferred embodiment, those skilled in the art can make various multi-form changes not breaking away under this case spirit and the category.Above illustrated embodiment is only in order to explanation this case, and is non-in order to limit the scope of this case.Such as various modifications or the variation of being engaged in without prejudice to this case spirit all belongs to this case claim.

Claims

1. chuck structure mainly comprises:

One body (10), epimere portion establishes a power axis hole (12), and hypomere portion establishes a cutter and wears and hold hole (13);

One cutter axial positioning structure is located at this cutter and is worn the wall of holding hole (13), an element (20) that can radially move back and forth along this wall, and the part of footpath this element (20) when inwardly moving to extreme position protrudes from this cutter and wears and hold in the hole (13);

One cutter rotation direction is strengthened location structure, and one is located at this cutter wears the bossy body (15) of holding hole (13) inwall;

One control cover group, closing the footpath pivot, to be placed in this body (10) outer and can be controlled and axially move back and forth, thus control said elements (20) radially protrudes or recesses this cutter and wear and hold hole (13);

One fixing back cover (48), the tight fit pivot is placed in this body (10) epimere portion, and coats the part surface of this control cover group;

One spring (45) is set in this control cover group and should be fixedly outside the body (10) between the back cover (48);

One cutter (80), has a location division (81), be through at this cutter and wear and hold in the hole (13), the groove (82) of element (20) the embedding system of this cutter axial positioning structure of at least one confession is established on its surface, and one strengthens the groove (83) that the bossy body (15) of location structure holds for this cutter rotation direction.

2. chuck structure as claimed in claim 1, it is characterized in that: this cutter axial positioning structure in body (10) relatively this cutter wear the wall of holding hole (13) and establish at least one hole (14), fill out in this hole (14) and establish a stopper pearl (20), this stopper pearl (20) footpath inwardly move to extreme position its partly beading protrude from this cutter and wear and hold in the hole (13).

3. chuck structure as claimed in claim 2, it is characterized in that: this control cover group mainly comprises a movable sleeve (40) and a flexible shell (43), this movable sleeve (40) closes the footpath pivot and is placed in outside this body (10), the bottom is by terminal block body (16) the institute block of this body (10), this movable sleeve (40) inwall ring is established a bead returning groove (42), and this stopper pearl (20) is outwards moved along body (10) wall footpath can fall into this bead returning groove (42); The shell (43) that should stretch is tight with at the outside of this movable sleeve.

4. chuck structure as claimed in claim 3 is characterized in that: this movable sleeve (40) and this fixedly be established this spring (45) between the back cover (48).

5. chuck structure as claimed in claim 2, it is characterized in that: at least one recessed pearl groove (82) is established on this cutter positioning portion surface, location division (81) penetrates this cutter and wears and hold in the hole (13), and this stopper pearl (20) protrudes from cutter and wears the part beading of holding hole (13) and snap in this pearl groove (82).

6. chuck structure as claimed in claim 1 is characterized in that: this bossy body (15) is strip.

7. chuck structure as claimed in claim 6 is characterized in that: the open cannelure (83) in a top is established in the location division (81) of this cutter (80), and this location division (81) penetrate this cutter and wear and hold hole (13), and this bossy body (15) embeds in this cannelure (83).

8. chuck structure as claimed in claim 1 is characterized in that: this cutter is worn and is held hole (13) and closely descend open end hole wall ring to establish a baffle ring (50).