CN101817099A

CN101817099A - Spanner drill chuck

Info

Publication number: CN101817099A
Application number: CN200910025262A
Authority: CN
Inventors: 邵怡青
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-26
Filing date: 2009-02-26
Publication date: 2010-09-01
Anticipated expiration: 2029-02-26
Also published as: CN101817099B

Abstract

The invention discloses a spanner drill chuck. The side wall of a drill body with a hollow inverse umbrella-shaped structure is provided with at least two clamping jaw grooves with equal distances at intervals; the upper end of the drill body is provided with a step surface; one side of each clamping jaw is just slidably accommodated in the clamping jaw grooves of the drill body; each clamping jaw consists of a meshing end and a clamping end, and one side of each meshing end of each clamping jaw far away from the axial lead of the drill body is provided with a meshing thread; the inner side wall of a thread toothed sleeve is provided with a taper thread and a boss; the thread toothed sleeve is sleeved outside the drill body, and the taper thread on the inner side wall of the thread toothed sleeve is connected with the threads of the meshing ends of the clamping jaws; the upper end face of the thread toothed sleeve is tightly abutted against the lower side of the step surface at the upper end of the drill body; the inner side surface of the boss of the thread tothed sleeve is matched with the outer side surface of the drill body; the outer side wall of the lower end of the drill body is provided with a regulating device, and the upper end of the regulating device is matched and connected with the lower end of the thread toothed sleeve; and the regulating device can control the rotation of the thread toothed sleeve. The invention has high precision, convenient regulation, simplicity, labor saving, high mechanical strength of the clamping jaws, difficult deformation, high positioning precision and durability.

Description

Spanner drill chuck

Technical field

The present invention relates to a kind of drill chuck, particularly a kind of spanner drill chuck.

Background technology

At present in the prior art, spanner drill chuck is generally by drill body, overcoat, nut, jaw and Key jaw type spanner are formed, three jaws are distributed on the drill body in three inclined holes, nut and overcoat interference fit, the front end of overcoat is provided with helical teeth, the front end of drill body is provided with the fixing hole of restriction Key jaw type spanner position, nut is threaded with jaw, thereby driving the nut rotation by the operation overcoat drives jaw and pass in and out with clamping in inclined hole or unclamp drilling tool, Key jaw type spanner is inserted in the drill body fixing hole again, the tooth of Key jaw type spanner and the helical teeth engagement of being located at the overcoat front end, screw key spanner firmly, thereby drive overcoat around the drill body rotation, finally finish the clamping of drilling tool or unclamp, Key jaw type spanner is special-purpose auxiliary, be easy to lose or can not find for the moment, cause and to operate drilling tool, and during the screw key spanner owing to be single shaft location, the gear of Key jaw type spanner can't keep the state rotation of vertical its axial line, make the engaging tooth wheel set very quick-wearing scrap, the part bad mechanical strength of jaw clamping drilling tool, be easy to generate distortion, and jaw is to process on a cylinder, there is not special positioner, be easy to roll, influence the centralized positioning precision, the nut height is little, bad mechanical strength, be matched in clearance and the radial concentric location structure that does not have precision between drill body and the overcoat, the easy beat of overcoat breaks away from the drill body central axis during use, influences service precision.

Summary of the invention

In order to remedy above deficiency, the invention provides a kind of spanner drill chuck, this spanner drill chuck mechanical strength height, accurate positioning, easy to use, durable in use.

The present invention for the technical scheme that solves its technical problem and adopt is: a kind of spanner drill chuck, comprise drill body, jaw, spiral shell tooth cover and adjusting device, (it is vertical that service orientation refers to be as benchmark to use direction, drill bit is located at the end below the jaw), drill body is the beveled structure that falls of hollow, drill body sidewall equal intervals is interval with at least two jaw grooves, the drill body upper end is provided with a step surface, jaw one side just slidably is placed in the jaw groove of drill body, jaw is made up of the end of engagement on top and the pinching end of bottom, the jaw end of engagement is provided with thread engagement away from a side of drill body axial line, spiral shell tooth cover madial wall is provided with taper thread and boss, spiral shell tooth cover is sheathed on the drill body outside, taper thread on the spiral shell tooth cover madial wall is threaded with the end of engagement of jaw, the area that is threaded of this kind structure is big, alleviated the operating pressure of wall scroll screw thread, it is smooth and easy to be threaded, the spiral shell tooth puts end face and presses closer in the step surface downside of drill body upper end, the boss medial surface of spiral shell tooth cover cooperates with the drill body lateral surface, spiral shell tooth cover is axial with drill body, radial location, beat breaks away from the drill body central axis when effectively having prevented the rotation of spiral shell tooth cover, the service precision height, drill body lower end lateral wall is provided with an adjusting device, the adjusting device upper end is connected with spiral shell tooth cover lower end, adjusting device can be controlled the rotation of spiral shell tooth cover, thereby jaw is slided up and down, promptly adjust gap length between the pinching end of jaw, and then control jaw pinching end unclamping or clamp drill bit.During use, earlier drill bit is inserted in the jaw, rotate spiral shell tooth cover again, make jaw clamp drill bit, and then make jaw clamp drill bit by adjusting device rotation spiral shell tooth cover.

As a further improvement on the present invention, drill body sidewall equal intervals is interval with three jaw grooves.

As a further improvement on the present invention, jaw is a polygon prism shape structure, and the jaw groove of drill body is the polygon prism shape groove that cooperates with jaw.

As a further improvement on the present invention, adjusting device control spiral shell tooth cover rotational structure is: the adjusting device fixed cover is located at the drill body lower end, adjusting device comprises the gear locating rack, gear positioning sleeve and degree of tightness gear, to use direction to be benchmark, the gear locating rack is provided with at least one gear locating slot, gear positioning sleeve fixed cover is located on the gear locating rack lateral wall, gear positioning sleeve sidewall is provided with the locating hole with gear locating slot quantity and position consistency, the degree of tightness gear is by first bevel gear, the locating shaft that is fixedly arranged on first bevel gear, one side is formed (the degree of tightness gear is formed as one) with the fixed axis that is fixedly arranged on the first bevel gear opposite side, be provided with the spanner adjustment hole in the fixed axis, the fixed axis activity of degree of tightness gear is inserted in the locating hole of gear positioning sleeve, its locating shaft activity is inserted in the gear locating slot of gear locating rack, and the one side activity of first bevel gear only peaks at the gear locating slot lateral wall of gear locating rack, the first bevel gear opposite side activity only peaks at gear positioning sleeve madial wall, spiral shell tooth cover lower end is provided with second bevel gear, first bevel gear engagement of degree of tightness gear in second bevel gear of spiral shell tooth cover and the adjusting device, spiral shell tooth cover lower surface only peaks at gear positioning sleeve upper surface, second bevel gear of spiral shell tooth cover cooperates with gear positioning sleeve medial surface away from the lateral surface in axle center, this kind structure is supporting with the fixed axis and the locating shaft of degree of tightness gear, during use, effectively prevented degree of tightness gear axis line deflection, and spiral shell tooth cover is axial with adjusting device, radial location, effectively guaranteed the abundant engagement of gear pair, the wearing and tearing that effectively alleviated gear pair.Adjusting device control spiral shell tooth cover rotates multiple structure, such as comprising that also the rotatable longitudinal register of adjusting device and drill body is connected, adjusting device adopts spline to fixedly connected with spiral shell tooth cover, the adjusting device lateral wall is provided with swing handle, can regulate spiral shell tooth cover and rotate by pulling swing handle with adjusting device, said structure all is the known structure of those of ordinary skill, no longer herein illustrating more.

As a further improvement on the present invention, the adjusting device fixed cover is located at the drill body lower end structure: be benchmark to use direction, adjusting device is sheathed on the lateral wall of drill body lower end, drill body is provided with and the degree of tightness gear quantity of adjusting device and the keyway of position consistency, locating shaft one end of degree of tightness gear just is placed in the keyway of drill body, be provided with the positioning key consistent with keyway quantity, positioning key just can be inserted in the keyway, and the positioning key upper end only peaks at the lateral wall of degree of tightness gear locating shaft.

As a further improvement on the present invention, gear locating rack equal intervals is interval with three gear locating slots, and then correspondence equidistantly is interval with three keyways on the drill body sidewall.

As a further improvement on the present invention, jaw groove and keyway equidistantly are provided with at interval.

As a further improvement on the present invention, the spanner adjustment hole in the fixed axis is the hexagon counterbore that cooperates with the standard hex spanner.

As a further improvement on the present invention, the pinching end of jaw is the taper cylinder, and the gear locating rack madial wall of adjusting device is provided with the jaw locating slot that cooperates with the jaw pinching end, and the pinching end of jaw just is slidedly located in the jaw locating slot, jaw is repeated the location, has improved its positioning accuracy.

Useful technique effect of the present invention is: drill body and spiral shell tooth cover and spiral shell tooth cover all axially and radially all have precision positioning with adjusting device, the service precision height, adjusting device is fixedlyed connected with drill body, prevent that effectively adjusting device from losing and cause drill chuck to use, and easy to adjust, simple, laborsaving, and jaw is polygon rib type, the mechanical strength height, not yielding, the positioning accuracy height is durable in use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a front view of the present invention;

Fig. 3 is the A-A cutaway view of Fig. 1.

The specific embodiment

Embodiment: a kind of spanner drill chuck, comprise drill body 1, jaw 2, spiral shell tooth cover 3 and adjusting device 4, (it is vertical that service orientation refers to be as benchmark to use direction, drill bit is located at the end below the jaw), drill body 1 is the beveled structure that falls of hollow, drill body 1 sidewall equal intervals is interval with at least two jaw grooves 11, drill body 1 upper end is provided with a step surface 12, jaw 2 one sides just slidably are placed in the jaw groove 11 of drill body 1, jaw 2 is made up of the end of engagement 21 on top and the pinching end 22 of bottom, jaw end of engagement 21 is provided with thread engagement 23 away from a side of drill body 1 axial line, the spiral shell tooth overlaps 3 madial walls and is provided with taper thread 31 and boss 32, spiral shell tooth cover 3 is sheathed on drill body 1 outside, the taper thread 31 that the spiral shell tooth overlaps on 3 madial walls is threaded with the end of engagement 21 of jaw 2, this kind structure area that is threaded is big, alleviated the operating pressure of wall scroll screw thread, it is smooth and easy to be threaded, the spiral shell tooth overlaps 3 upper surfaces and presses closer step surface 12 downsides in drill body 1 upper end, boss 32 medial surfaces of spiral shell tooth cover 3 cooperate with drill body 1 lateral surface, spiral shell tooth cover 3 is axial with drill body 1, radial location, beat breaks away from drill body 1 central axis when effectively having prevented 3 rotations of spiral shell tooth cover, the service precision height, drill body 1 lower end lateral wall is provided with an adjusting device 4, adjusting device 4 upper ends and spiral shell tooth overlap 3 lower ends and are connected, adjusting device 4 can be controlled the rotation of spiral shell tooth cover 3, thereby jaw 2 is slided up and down, promptly adjust 22 gap lengths of pinching end of jaw 2, and then the unclamping or clamp of control jaw 2 pinching ends 22 pairs of drill bits.During use, earlier drill bit is inserted in the jaw 2, rotate spiral shell tooth cover 3 again, make jaw 2 clamp drill bit, and then make jaw 2 clamp drill bits by adjusting device 4 rotation spiral shell tooth covers 3.

Described drill body 1 sidewall equal intervals is interval with three jaw grooves 11.

Described jaw 2 is a polygon prism shape structure, and the jaw groove 11 of drill body 1 is the polygon prism shape groove that cooperates with jaw 2.

Described adjusting device 4 control spiral shell teeth overlap 3 rotational structures and are: adjusting device 4 fixed covers are located at drill body 1 lower end, adjusting device 4 comprises gear locating rack 41, gear positioning sleeve 42 and degree of tightness gear 43, to use direction to be benchmark, gear locating rack 41 is provided with at least one gear locating slot 411, gear positioning sleeve 42 fixed covers are located on gear locating rack 41 lateral walls, gear positioning sleeve 42 sidewalls are provided with the locating hole 421 with gear locating slot 411 quantity and position consistency, degree of tightness gear 43 is by first bevel gear 431, the locating shaft 432 that is fixedly arranged on first bevel gear, 431 1 sides is formed (degree of tightness gear 43 is formed as one) with the fixed axis 433 that is fixedly arranged on first bevel gear, 431 opposite sides, be provided with spanner adjustment hole 434 in the fixed axis 433, fixed axis 433 activities of degree of tightness gear 43 are inserted in the locating hole 421 of gear positioning sleeve 42, its locating shaft 432 activities are inserted in the gear locating slot 411 of gear locating rack 41, and the 431 1 side activities of first bevel gear only peak at gear locating slot 411 lateral walls of gear locating rack 41, the 431 opposite side activities of first bevel gear only peak at gear positioning sleeve 42 madial walls, the spiral shell tooth overlaps 3 lower ends and is provided with second bevel gear 33, second bevel gear 33 of spiral shell tooth cover 3 meshes with first bevel gear 431 of adjusting device 4 interior degree of tightness gears 43, the spiral shell tooth overlaps 3 lower surfaces and only peaks at gear positioning sleeve 42 upper surfaces, second bevel gear 33 of spiral shell tooth cover 3 cooperates with gear positioning sleeve 42 medial surfaces away from the lateral surface in axle center, this kind structure is supporting with the fixed axis 433 and the locating shaft 432 of degree of tightness gear, during use, degree of tightness gear 43 axial line deflections have effectively been prevented, and spiral shell tooth cover 3 is axial with adjusting device 4, radial location, effectively guaranteed the abundant engagement of gear pair, the wearing and tearing that effectively alleviated gear pair.Adjusting device 4 control spiral shell tooth covers 3 rotate multiple structure, such as comprising that also the rotatable longitudinal register of adjusting device and drill body is connected, adjusting device adopts spline to fixedly connected with spiral shell tooth cover, the adjusting device lateral wall is provided with swing handle, can regulate spiral shell tooth cover and rotate by pulling swing handle with adjusting device, said structure all is the known structure of those of ordinary skill, no longer herein illustrating more.

Described adjusting device 4 fixed covers are located at drill body 1 lower end structure: be benchmark to use direction, adjusting device 4 is sheathed on the drill body 1 lower end lateral wall, drill body 1 is provided with and degree of tightness gear 43 quantity of adjusting device 4 and the keyway 13 of position consistency, locating shaft 432 1 ends of degree of tightness gear 43 just are placed in the keyway 13 of drill body 1, be provided with the positioning key 5 consistent with keyway 13 quantity, positioning key 5 just can be inserted in the keyway 13, and positioning key 5 upper ends only peak at the lateral wall of degree of tightness gear 43 locating shafts 432.

Described gear locating rack 41 equal intervals are interval with three gear locating slots 411, and then correspondence equidistantly is interval with three keyways 13 on drill body 1 sidewall.

Described jaw groove 11 equidistantly is provided with at interval with keyway 13.

Spanner adjustment hole 434 in the described fixed axis 433 is the hexagon counterbore that cooperates with the standard hex spanner.

The pinching end 22 of described jaw 2 is the taper cylinder, gear locating rack 41 madial walls of adjusting device 4 are provided with the jaw locating slot 412 that cooperates with jaw pinching end 22, the pinching end 22 of jaw just is slidedly located in the jaw locating slot 412, and jaw 2 is repeated the location, has improved its positioning accuracy.

Claims

1. spanner drill chuck, it is characterized in that: comprise drill body (1), jaw (2), spiral shell tooth cover (3) and adjusting device (4), to use direction to be benchmark, drill body (1) is the beveled structure that falls of hollow, drill body (1) sidewall equal intervals is interval with at least two jaw grooves (11), drill body (1) upper end is provided with a step surface (12), jaw (2) one sides just slidably are placed in the jaw groove (11) of drill body (1), jaw (2) is made up of the end of engagement (21) on top and the pinching end (22) of bottom, jaw end of engagement (21) is provided with thread engagement (23) away from a side of drill body (1) axial line, spiral shell tooth cover (3) madial wall is provided with taper thread (31) and boss (32), spiral shell tooth cover (3) is sheathed on drill body (1) outside, taper thread (31) on spiral shell tooth cover (3) madial wall is threaded with the end of engagement (21) of jaw (2), spiral shell tooth cover (3) upper surface presses closer in step surface (12) downside of drill body (1) upper end, boss (32) medial surface of spiral shell tooth cover (3) cooperates with drill body (1) lateral surface, drill body (1) lower end lateral wall is provided with an adjusting device (4), adjusting device (4) upper end is connected with spiral shell tooth cover (3) lower end, and adjusting device (4) can be controlled the rotation of spiral shell tooth cover (3).

2. a kind of spanner drill chuck according to claim 1 is characterized in that: drill body (1) sidewall equal intervals is interval with three jaw grooves (11).

3. a kind of spanner drill chuck according to claim 1 is characterized in that: jaw (2) is a polygon prism shape structure, and the jaw groove (11) of drill body (1) is the polygon prism shape groove that cooperates with jaw.

4. a kind of spanner drill chuck according to claim 1, it is characterized in that: adjusting device (4) control spiral shell tooth cover (3) rotational structure is: adjusting device (4) fixed cover is located at drill body (1) lower end, adjusting device (4) comprises gear locating rack (41), gear positioning sleeve (42) and degree of tightness gear (43), to use direction to be benchmark, gear locating rack (41) is provided with at least one gear locating slot (411), gear positioning sleeve (42) fixed cover is located on gear locating rack (41) lateral wall, gear positioning sleeve (42) sidewall is provided with the locating hole (421) with gear locating slot (411) quantity and position consistency, degree of tightness gear (43) is by first bevel gear (431), the fixed axis (433) that is fixedly arranged on the locating shaft (432) of first bevel gear (431) one sides and is fixedly arranged on first bevel gear (431) opposite side is formed, be provided with spanner adjustment hole (434) in the fixed axis (433), fixed axis (433) activity of degree of tightness gear (43) is inserted in the locating hole (421) of gear positioning sleeve (42), its locating shaft (432) activity is inserted in the gear locating slot (411) of gear locating rack (41), and (431) the one side activities of first bevel gear only peak at gear locating slot (411) lateral wall of gear locating rack (41), first bevel gear (431) opposite side activity only peaks at gear positioning sleeve (42) madial wall, spiral shell tooth cover (3) lower end is provided with second bevel gear (33), second bevel gear (33) of spiral shell tooth cover (3) and the engagement of first bevel gear (431) of the interior degree of tightness gear of adjusting device (4) (43), spiral shell tooth cover (3) lower surface only peaks at gear positioning sleeve (42) upper surface, and second bevel gear (33) of spiral shell tooth cover (3) cooperates with gear positioning sleeve (42) medial surface away from the lateral surface in axle center.

5. a kind of spanner drill chuck according to claim 4, it is characterized in that: adjusting device (4) fixed cover is located at drill body (1) lower end structure and is: be benchmark to use direction, adjusting device (4) is sheathed on the lateral wall of drill body (1) lower end, drill body (1) is provided with and degree of tightness gear (43) quantity of adjusting device (4) and the keyway (13) of position consistency, locating shaft (432) one ends of degree of tightness gear (43) just are placed in the keyway (13) of drill body (1), be provided with the positioning key (5) consistent with keyway (13) quantity, positioning key (5) just can be inserted in the keyway (13), and positioning key (5) upper end only peaks at the lateral wall of degree of tightness gear (43) locating shaft (432).

6. a kind of spanner drill chuck according to claim 5 is characterized in that: gear locating rack (41) equal intervals is interval with three gear locating slots (411), and then correspondence equidistantly is interval with three keyways (13) on drill body (1) sidewall.

7. a kind of spanner drill chuck according to claim 6 is characterized in that: jaw groove (11) equidistantly is provided with at interval with keyway (13).

8. a kind of spanner drill chuck according to claim 4 is characterized in that: the hexagon counterbore of the spanner adjustment hole (434) in the fixed axis (433) for cooperating with the standard hex spanner.

9. according to claim 1 or 4 described a kind of spanner drill chucks, it is characterized in that: the pinching end (22) of jaw (2) is the taper cylinder, gear locating rack (41) madial wall of adjusting device (4) is provided with the jaw locating slot (412) that cooperates with jaw pinching end (22), and the pinching end of jaw (22) just is slidedly located in the jaw locating slot (412).