CN210139088U

CN210139088U - Expanding drill bit

Info

Publication number: CN210139088U
Application number: CN201920381347.3U
Authority: CN
Inventors: 刘从富
Original assignee: Hubei Ejia Technology Co ltd
Current assignee: Hubei Ejia Technology Co ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-03-13
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses a reamer bit, including drill bit, reaming unit and connecting piece, the vertical setting of drill bit is in the lower extreme of reaming unit, and its crown down, and its afterbody with the connection can be dismantled to reaming unit lower extreme, the vertical setting of connecting piece is in the upper end of reaming unit, and its lower extreme with reaming unit upper end is connected fixedly, the drill bit is used for drilling and location, the reaming unit is used for the reaming, the connecting piece be used for with the connection can be dismantled to the electric drill. Its simple structure, the drill bit sets up the lower extreme of reaming unit, it is used for the centre of a circle of location and direction reaming unit trompil, and the reaming unit is used for carrying out the reaming, and the connecting piece is used for dismantling with the drill bit clamping part of electric drill and is connected.

Description

Expanding drill bit

Technical Field

The utility model belongs to five metals drill bit field especially relates to a reamer bit.

Background

The current reamer structure is various, and the size in partial reamer bit unable accurate control reaming aperture is loaded down with trivial details when adjusting reaming aperture, and also some reamer bit reaming apertures are fixed according to the reamer bit model, can't adjust, lead to using inconveniently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a convenient to use, reaming hole enlargement is adjustable, and the removable reamer bit of consume piece.

In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a reamer bit, includes drill bit, reaming unit and connecting piece, the vertical setting of drill bit is in the lower extreme of reaming unit, and its crown down, and its afterbody with the connection can be dismantled to reaming unit lower extreme, the vertical setting of connecting piece is in the upper end of reaming unit, and its lower extreme with the reaming unit upper end is connected fixedly, the drill bit is used for drilling and location, the reaming unit is used for the reaming, the connecting piece is used for dismantling with the electric drill and is connected.

The beneficial effects of the above technical scheme are that: its simple structure, the drill bit sets up the lower extreme of reaming unit, it is used for the centre of a circle of location and direction reaming unit trompil, and the reaming unit is used for carrying out the reaming, and the connecting piece is used for dismantling with the drill bit clamping part of electric drill and is connected.

In the above technical scheme, the reaming unit comprises a connecting column, two sliding knife assemblies and two adjusting rods, the connecting column is vertically arranged, the upper end of the connecting column is connected with the lower end of the connecting piece, the lower end of the connecting column is connected with the tail part of the drill bit, the sliding rod is horizontally arranged, the middle parts corresponding to the length directions of the sliding rod and the connecting column are fixedly connected, the two sliding knife assemblies are both in sliding connection with the sliding rod and are symmetrically distributed on the two sides of the connecting column, the cutting edges of the two sliding knife assemblies face downwards, the two sliding knife assemblies can slide on the sliding rod along the length directions of the sliding rod to be close to or away from each other, the adjusting rods are horizontally arranged and are vertically distributed at intervals and are parallel to each other, the middle parts corresponding to the length directions of the adjusting rods are rotatably connected with the connecting column, and the parts located on the two sides of the connecting, the two sliding knife assemblies are provided with screw holes matched with the external threads on the same side of the adjusting rod, the two sliding knife assemblies are respectively in threaded connection with two ends of the adjusting rod, and the adjusting rod is rotated to drive the two sliding knife assemblies to slide on the sliding rod to be close to or away from each other.

The beneficial effects of the above technical scheme are that: its simple structure can adjust two through rotating the regulation pole the synchronous slip of sliding knife subassembly is to keeping away from each other or being close to each other in order to adjust the reaming size, and it is right to adjust the pole simultaneously the sliding knife subassembly carries on spacingly, avoids sliding knife subassembly during operation under the centrifugal force effect on the slide bar and influence the precision in reaming aperture.

In the above technical scheme, the sliding knife assembly comprises a knife holder and a knife blade, the knife holder is respectively in sliding connection with the sliding rod and in threaded connection with the adjusting rod, the knife blade is installed at the lower end of the knife holder, and the cutting edge of the knife blade faces downwards.

The beneficial effects of the above technical scheme are that: the structure is simple.

In the technical scheme, a length scale marking is further arranged on the slide bar on any one side of the connecting column along the length direction of the slide bar, and the length scale marking takes the middle part corresponding to the length direction of the slide bar as an initial scale.

The beneficial effects of the above technical scheme are that: the distance between the sliding component and the corresponding middle part of the sliding rod in the length direction can be adjusted by referring to the scales to judge the radius of the reaming.

In the technical scheme, the end part of any one end of the adjusting rod is concavely provided with a regular hexagon groove, the groove is used for being inserted into an outer hexagonal screwdriver matched with the groove, and the outer hexagonal screwdriver is rotated to drive the adjusting rod to rotate under the action of external force.

The beneficial effects of the above technical scheme are that: so that the adjusting rod can rotate conveniently.

In the technical scheme, the drill bit is a twist drill bit, the tail part of the twist drill bit is detachably connected with the lower end of the connecting column, the central line of the drill bit is vertically intersected with the central line of the sliding rod, and the intersection point of the drill bit and the central line of the sliding rod is the middle point corresponding to the length direction of the sliding rod.

The beneficial effects of the above technical scheme are that: the structure is simple, and the precision of the same-circle distribution of the two sliding cutter assemblies on a circle with the drill bit as the center of a circle is improved.

Among the above-mentioned technical scheme the spliced pole lower extreme be equipped with drill bit afterbody matched with shrinkage pool, the drill bit afterbody stretches into in the shrinkage pool, just the lower extreme of the lateral wall of spliced pole is equipped with and runs through the screw hole of shrinkage pool, screw hole female connection has first bolt, just the nut end of first bolt is located outside the spliced pole, under the exogenic action, screws up first bolt in order to incite somebody to action the afterbody of drill bit presss from both sides tightly in the shrinkage pool.

The beneficial effects of the above technical scheme are that: because the drill bit is the article of loseing, make the drill bit removable through with drill bit with the spliced pole detachable connection.

In the technical scheme, the connecting piece and the connecting column are integrally formed.

Drawings

Fig. 1 is a schematic structural diagram of a reamer bit according to an embodiment of the present invention;

FIG. 2 is a schematic view of a slide blade assembly according to an embodiment of the present invention;

fig. 3 is another schematic view of a sliding blade assembly according to an embodiment of the present invention.

In the figure: the drilling tool comprises a drilling bit 1, a reaming unit 2, a connecting column 21, a concave hole 211, a first bolt 212, a sliding rod 22, a sliding cutter assembly 23, a cutter holder 231, a blade 232, a second bolt 233, an adjusting rod 24, a groove 241 and a connecting piece 3.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, this embodiment provides a reamer bit, including drill bit 1, reaming unit 2 and connecting piece 3, 1 vertical settings of drill bit is in the lower extreme of reaming unit 2, and its crown is down, and its afterbody with the connection can be dismantled to reaming unit 2 lower extreme, 3 vertical settings of connecting piece are in the upper end of reaming unit 2, and its lower extreme with reaming unit 2 upper end is connected fixedly, drill bit 1 is used for drilling and location, reaming unit 2 is used for the reaming, connecting piece 3 is used for dismantling with the electric drill and is connected, its simple structure, the drill bit sets up the lower extreme of reaming unit, it is used for the centre of a circle of location and direction reaming unit trompil, and reaming unit is used for carrying out the reaming, and the connecting piece is used for dismantling with the drill bit clamping part of electric drill bit of electric drill and is connected.

In the above technical solution, the reaming unit 2 includes a connection post 21, a slide bar 22, two sliding knife assemblies 23 and an adjusting rod 24, the two sliding knife assemblies 23 are vertically arranged, the upper end of the connection post 21 is connected with the lower end of the connection piece 3, the lower end of the connection post is connected with the tail of the drill bit 1, the slide bar 22 is horizontally arranged and the middle part corresponding to the length direction thereof is fixedly connected with the connection post 21, the two sliding knife assemblies 23 are slidably connected with the slide bar 22 and symmetrically distributed on both sides of the connection post 21, the two cutting edges of the sliding knife assemblies 23 face downwards, the two sliding knife assemblies 23 can slide on the slide bar 22 along the length direction thereof to be close to or away from each other, the adjusting rod 24 is horizontally arranged and is vertically distributed at intervals and parallel to each other with the slide bar 22, the middle part corresponding to the length direction of the adjusting rod 24 is rotatably connected with the connection post 21, it is located the position of spliced pole 21 both sides is equipped with each other and is reverse external screw thread, two all be equipped with on the sliding cutter subassembly 23 with adjust 24 homonymy external screw thread matched with screws of pole, two sliding cutter subassembly 23 respectively with adjust the both ends threaded connection of pole 24, rotate adjust pole 24 with drive two sliding cutter subassembly 23 is in slide bar 22 is gone up to sliding to being close to each other or keeping away from each other, and its simple structure can adjust two through rotating the regulation pole sliding cutter subassembly synchronous sliding is to keeping away from each other or being close to each other in order to adjust the reaming size, and it is still right to adjust the pole simultaneously sliding cutter subassembly carries on spacingly, avoids sliding cutter subassembly during operation to slide on the slide bar under centrifugal force effect and influences the precision in reaming aperture.

In the above technical solution, the sliding blade assembly 23 includes a blade seat 231 and a blade 232, the blade seat 231 is slidably connected to the sliding rod 22 and is threadedly connected to the adjusting rod 24, the blade 232 is installed at a lower end of the blade seat 231, and a cutting edge of the blade 232 faces downward, so that the structure is simple. Wherein, the blade holder is close to the lower extreme of one side of spliced pole is equipped with the blade mounting groove, just the blade upper end from bottom to top stretches into in the mounting groove (the lower extreme of mounting groove link up) to fasten on the blade holder through second bolt 233 specifically as shown in fig. 2 and fig. 3 (be equipped with on the diapire of mounting groove with second bolt matched with screw, and blade upper end be equipped with mounting groove inner screw hole matched with through-hole, the second bolt passes through-hole on the blade and stretch into in the mounting groove inner screw hole and with its threaded connection in order to fix the blade.

In the technical scheme, length scale marks are further arranged on any one side of the slide rod 22, which is positioned on the connecting column 21, along the length direction of the slide rod 22, the length scale marks take the middle part corresponding to the length direction of the slide rod 22 as an initial scale, and the distance from the slide rod to the middle part corresponding to the length direction of the slide rod can be adjusted by referring to the scale to judge the radius of the reaming. (preferred, the spliced pole is the cylinder of vertical setting, its lower extreme is coaxial to be equipped with the shrinkage pool, promptly drill bit 1 with the coaxial connection of dismantling of spliced pole, the drill bit of 6mm specification is adopted to 1 above-mentioned drill bit of preferred, the connecting piece upper end be with the round bar of the coaxial distribution of spliced pole, two the sliding cutter subassembly with the axis symmetric distribution of spliced pole, the axis and two of spliced pole the sliding cutter subassembly is crossing perpendicularly, so can realize two the orbit coincidence of sliding cutter subassembly operation when rotating).

In the above technical scheme, a regular hexagonal groove 241 is concavely formed in an end portion of any one end of the adjusting rod 24, the groove 241 is used for being inserted into an external hexagonal screwdriver matched with the groove 241, and the external hexagonal screwdriver is rotated to drive the adjusting rod 24 to rotate under the action of external force, so that the adjusting rod is convenient to rotate.

In the technical scheme, the drill bit 1 is a twist drill bit, the tail part of the drill bit 1 is detachably connected with the lower end of the connecting column 21, the center line of the drill bit 1 is vertically intersected with the center line of the sliding rod 22, the intersection point of the drill bit and the center line of the sliding rod 22 is the middle point corresponding to the length direction of the sliding rod 22, the structure is simple, and the accuracy of the same-circle distribution of the two sliding cutter assemblies on a circle with the drill bit as the center of a circle is improved.

Among the above-mentioned technical scheme the spliced pole 21 lower extreme be equipped with 1 afterbody matched with shrinkage pool 211 of drill bit, 1 afterbody of drill bit stretches into in the shrinkage pool 211, just the lower extreme of the lateral wall of spliced pole 21 is equipped with and runs through the screw hole of shrinkage pool 211, screw hole female connection has first bolt 212, just outside the nut end of first bolt 212 is located spliced pole 21, under the exogenic action, screws up first bolt 212 is in order to incite somebody to action the afterbody of drill bit 1 presss from both sides tightly in the shrinkage pool, because the drill bit is the consume article, through with the drill bit with the spliced pole can be dismantled the connection and make the drill bit removable.

In the above technical scheme, the connecting piece 3 and the connecting column 21 are integrally formed, and the structure is simple.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a reamer bit, its characterized in that, includes drill bit (1), reaming unit (2) and connecting piece (3), drill bit (1) vertical setting is in the lower extreme of reaming unit (2), and its crown down, and its afterbody with the connection can be dismantled to reaming unit (2) lower extreme, connecting piece (3) vertical setting is in the upper end of reaming unit (2), and its lower extreme with reaming unit (2) upper end is connected fixedly, drill bit (1) is used for drilling and location, reaming unit (2) are used for the reaming, connecting piece (3) are used for dismantling with the electric drill and are connected.

2. The reamer bit according to claim 1, wherein the reaming unit (2) comprises two connecting columns (21), two sliding rods (22), two sliding blade assemblies (23) and an adjusting rod (24), the two sliding blade assemblies (23) are vertically arranged, the upper ends of the two connecting columns are connected with the lower ends of the connecting pieces (3), the lower ends of the two sliding blade assemblies are connected with the tail portion of the drill bit (1), the sliding rods (22) are horizontally arranged, the middle portions corresponding to the length directions of the sliding rods (22) are fixedly connected with the connecting columns (21), the two sliding blade assemblies (23) are slidably connected with the sliding rods (22) and symmetrically distributed on two sides of the connecting columns (21), the cutting edges of the two sliding blade assemblies (23) face downwards, the two sliding blade assemblies (23) can slide on the sliding rods (22) along the length directions of the sliding rods (23) to be close to each other or far away from each other, adjust pole (24) level set up and with interval distribution and parallel to each other about slide bar (22), adjust the middle part that pole (24) length direction corresponds with spliced pole (21) rotate to be connected, it is located the position of spliced pole (21) both sides is equipped with each other for reverse external screw thread, two all be equipped with on sliding knife subassembly (23) with adjust pole (24) homonymy external screw thread matched with screw, two sliding knife subassembly (23) respectively with the both ends threaded connection who adjusts pole (24), rotate adjust pole (24) with drive two sliding knife subassembly (23) are in slide bar (22) are gone up to being close to each other or keep away from each other.

3. The reamer bit as claimed in claim 2, wherein the sliding blade assembly (23) comprises a blade seat (231) and a blade (232), the blade seat (231) is slidably connected with the sliding rod (22) and threadedly connected with the adjusting rod (24), respectively, the blade (232) is mounted at a lower end of the blade seat (231), and a blade edge of the blade (232) faces downward.

4. The reamer bit as claimed in claim 3, wherein the slide bar (22) is further provided with a length scale marking line along the length direction of the slide bar (22) on either side of the connecting column (21), and the length scale marking line takes the corresponding middle part of the slide bar (22) in the length direction as an initial scale.

5. The reamer bit as claimed in claim 4, wherein a regular hexagonal recess (241) is recessed at any end of the adjustment rod (24), the recess (241) is used for inserting an external hexagonal driver matched with the recess, and the external hexagonal driver is rotated by external force to drive the adjustment rod (24) to rotate.

6. A reamer bit according to any one of claims 2-5, wherein the bit (1) is a twist bit, the tail of the twist bit is detachably connected with the lower end of the connecting column (21), the center line of the bit (1) is perpendicularly intersected with the center line of the sliding rod (22), and the intersection point of the two is the corresponding middle point of the sliding rod (22) in the length direction.

7. The reaming drill bit according to claim 6, characterized in that the lower end of the connecting column (21) is provided with a concave hole (211) matched with the tail of the drill bit (1), the tail of the drill bit (1) extends into the concave hole (211), the lower end of the side wall of the connecting column (21) is provided with a threaded hole penetrating through the concave hole (211), the threaded hole is internally connected with a first bolt (212), the nut end of the first bolt (212) is positioned outside the connecting column (21), and the first bolt (212) is screwed down under the action of external force to clamp the tail of the drill bit (1) in the concave hole.

8. Reamer bit according to claim 7, wherein the connector (3) is integrally formed with the connecting post (21).