CN219169691U - Trepanning drill bit holder - Google Patents

Abstract

The utility model discloses an open-pore drill bit holder, which comprises a motor shaft, wherein the shaft end of the motor is connected with the drill bit holder, the drill bit holder comprises a screw base and a shell barrel, the screw base is fixedly connected with the end part of the motor shaft, one end of the shell barrel is provided with internal threads, the screw base is provided with external threads, and the shell barrel is in threaded connection with the screw base; the shell section of thick bamboo is kept away from internal thread one end and is equipped with the trompil, shell section of thick bamboo inner wall articulates and is equipped with a plurality of levers, and the lever is close to the trompil setting, the screw thread base still is connected in shell section of thick bamboo and is equipped with the frustum structure, the lever middle part is articulated with shell section of thick bamboo inner wall through articulated seat. The advantages are that: according to the perforated drill bit clamp disclosed by the utility model, the perforated drill bit is clamped through the lever, so that the clamping force on the drill bit can be amplified, the slipping is effectively avoided, the clamping effect is improved, and the tapered table part and the fixed shaft can rotate, so that the roller can roll on the inclined side surface of the tapered table part.

Description

Trepanning drill bit holder

Technical Field

The utility model relates to the field of drill bit clamping equipment, in particular to an open-pore drill bit clamp holder.

Background

The drilling bit is a rotary tool with drilling capability at the head end, and can drill through holes or blind holes in solid materials, ream holes and the like. The device has extremely wide application range and can be applied to tool machines such as electric drills, drilling machines and the like.

During machining operation, the hole drill needs to be clamped by a drill clamp. The bit holder is capable of holding a series of different diameter bits. The existing drill clamp is complex in structure, high in machining cost of the clamp, troublesome in clamping operation, poor in clamping effect and easy to slip. In view of the above, we propose an apertured bit holder to solve the above problems.

Disclosure of Invention

The utility model aims to overcome the technical defects, and provides the perforated bit holder which is reasonable in structure, strong in practicability, capable of improving clamping force and good in using effect.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the drill bit holder comprises a motor shaft, wherein the shaft end of the motor is connected with the drill bit holder, the drill bit holder comprises a screw base and a shell barrel, the screw base is fixedly connected with the end part of the motor shaft, one end of the shell barrel is provided with internal threads, the screw base is provided with external threads, and the shell barrel is in threaded connection with the screw base; the shell section of thick bamboo is kept away from internal thread one end and is equipped with the trompil, shell section of thick bamboo inner wall articulates and is equipped with a plurality of levers, and the lever is close to the trompil setting, the screw thread base still is connected in shell section of thick bamboo and is equipped with the frustum structure, the lever middle part is articulated to be connected with shell section of thick bamboo inner wall through articulated seat, the lever is L form design of buckling, and lever one end articulates and is equipped with grip block, the other end rotates to be connected and is equipped with the gyro wheel, the gyro wheel cooperatees with the slope lateral wall of frustum structure.

Further, the lever comprises a short rod part and a long rod part, the end part of the short rod part is connected with a clamping plate, the end part of the long rod part is provided with a roller, and the length of the long rod part is larger than that of the short rod part.

Furthermore, the levers are uniformly distributed with at least three levers around the axis of the motor shaft as the center.

Further, a spring is arranged between the long rod part and the outer shell.

Furthermore, the frustum structure comprises a fixed shaft and a frustum portion, wherein the fixed shaft is fixedly connected to the threaded base, and the frustum portion is rotationally connected with the fixed shaft.

Furthermore, one end of the frustum portion, which is far away from the opening, is provided with a counter bore matched with the fixed shaft, a plurality of balls used for rotating connection are arranged between the counter bore and the fixed shaft, and the counter bore and the fixed shaft are provided with tracks for the balls to roll.

Compared with the prior art, the utility model has the advantages that: according to the perforated drill bit clamp disclosed by the utility model, the perforated drill bit is clamped through the lever, so that the clamping force on the drill bit can be amplified, the slipping is effectively avoided, the clamping effect is improved, and the tapered table part and the fixed shaft can rotate, so that the roller can roll on the inclined side surface of the tapered table part.

Drawings

FIG. 1 is a schematic view of the structure of an open-hole bit holder of the present utility model.

As shown in the figure: 1. a motor shaft; 2. the base is screwed; 3. a housing tube; 4. an internal thread; 5. opening holes; 6. a lever; 7. a clamping plate; 8. a roller; 9. a short stem portion; 10. a long rod portion; 11. a spring; 12. a fixed shaft; 13. a frustum portion; 14. countersink; 15. and (3) rolling balls.

Detailed Description

Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals.

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

The drill bit holder comprises a motor shaft 1, wherein the motor shaft 1 is an output shaft of an electric hand drill, the end of the motor shaft 1 is connected with the drill bit holder, the drill bit holder comprises a screw base 2 and a shell barrel 3, the screw base 2 is fixedly connected with the end of the motor shaft 1, one end of the shell barrel 3 is provided with an internal thread 4, the screw base 2 is provided with an external thread, the shell barrel 3 is in threaded connection with the screw base 2, and when in use, the shell barrel 3 moves along the axial direction of the motor shaft 1 by rotating the shell barrel 3; the shell section of thick bamboo 3 is kept away from internal thread 4 one end and is equipped with trompil 5, trompil 5 drill bit is put into the holder by trompil 5 department, shell section of thick bamboo 3 inner wall articulates and is equipped with a plurality of levers 6, and lever 6 is close to trompil 5 setting, screw thread base still connects in shell section of thick bamboo 3 and is equipped with the frustum structure, when rotatory shell section of thick bamboo 3, shell section of thick bamboo 3 can be moved to motor shaft 1 end to make the frustum structure promote lever 6 rotation, lever 6 middle part is articulated with shell section of thick bamboo 3 inner wall through articulated seat, lever 6 is L form design of buckling, and lever 6 one end articulates and is equipped with grip block 7, other end rotation connection and is equipped with gyro wheel 8, gyro wheel 8 cooperatees with the slope lateral wall of frustum structure, and gyro wheel 8 can reduce the frictional force with the frustum structure, thereby be convenient for lever 6 rotates, when lever 6 rotates, sets up grip block 7 one end and can press from both sides the open pore 5 drill bit.

Further, the lever 6 includes a short rod portion 9 and a long rod portion 10, the end portion of the short rod portion 9 is connected with a clamping plate 7, the end portion of the long rod portion 10 is provided with a roller 8, and the length of the long rod portion 10 is greater than that of the short rod portion 9 during setting, so that the short rod portion 9 can obtain larger clamping force. The levers 6 are uniformly distributed circumferentially with the axis of the motor shaft 1 as the center, so that the drill bit can be clamped from multiple directions, and the clamping firmness is maintained. And a spring 11 is arranged between the long rod part 10 and the shell barrel 3, when the drill bit is loosened by rotation, the spring 11 can enable the clamping plate 7 to be automatically opened, so that the drill bit can be conveniently inserted into the opening 5 when the drill bit is fixed next time.

Further, as shown in fig. 1, the frustum structure comprises a fixed shaft 12 and a frustum portion 13, wherein the fixed shaft 12 is fixedly connected and arranged on a threaded base, and the frustum portion 13 is rotatably connected with the fixed shaft 12; the advantage of setting the frustum portion 13 to rotate is that when the drill bit is clamped, the roller 8 moves along the slope surface of the frustum portion 13, and the frustum portion 13 and the lever 6 are kept relatively static by the rotation of the frustum portion 13, so that the lever 6 cannot be twisted, and the clamping force is effectively maintained. A counter bore 14 matched with the fixed shaft 12 is arranged at one end of the frustum portion 13 far away from the opening 5, a plurality of balls 15 used for rotating connection are arranged between the counter bore 14 and the fixed shaft 12, and tracks for the balls 15 to roll are arranged on the counter bore 14 and the fixed shaft 12; the provision of the balls 15 and tracks facilitates free rotation of the frustum portion 13.

The utility model and its embodiments have been described above with no limitation, and only some, but not all embodiments of the utility model are shown in the detailed description, with the true construction not being limited thereto. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (6)

1. The utility model provides an trompil drill bit holder, includes motor shaft (1), and characterized in that, motor shaft (1) end is connected with the drill bit holder, and the drill bit holder includes spiro union base (2), shell section of thick bamboo (3), and spiro union base (2) and motor shaft (1) tip fixed connection, shell section of thick bamboo (3) one end is equipped with internal thread (4), and spiro union base (2) are equipped with the external screw thread, and shell section of thick bamboo (3) and spiro union base (2) threaded connection; the shell section of thick bamboo (3) is kept away from internal thread (4) one end and is equipped with trompil (5), shell section of thick bamboo (3) inner wall articulates and is equipped with a plurality of levers (6), and lever (6) are close to trompil (5) setting, screw thread base still is connected in shell section of thick bamboo (3) and is equipped with the frustum structure, lever (6) middle part is articulated with shell section of thick bamboo (3) inner wall through articulated seat, lever (6) are L form design of buckling, and lever (6) one end articulates and is equipped with grip block (7), other end swivelling joint and is equipped with gyro wheel (8), gyro wheel (8) cooperate with the slope lateral wall of frustum structure.

2. An opening (5) drill bit holder according to claim 1, characterized in that the lever (6) comprises a short rod part (9) and a long rod part (10), the end part of the short rod part (9) is connected with a clamping plate (7), the end part of the long rod part (10) is provided with a roller (8), and the length of the long rod part (10) is longer than that of the short rod part (9).

3. An opening (5) bit holder according to claim 1, characterized in that the levers (6) are arranged circumferentially uniformly with the axis of the motor shaft (1) as the centre, with no less than three.

4. An opening (5) bit holder according to claim 2, characterized in that a spring (11) is arranged between the long shaft (10) and the outer casing (3).

5. The drill bit holder for the open hole (5) according to claim 1, wherein the frustum structure comprises a fixed shaft (12) and a frustum portion (13), the fixed shaft (12) is fixedly connected to the threaded base, and the frustum portion (13) is rotatably connected with the fixed shaft (12).

6. The drill bit holder for the open hole (5) according to claim 5, wherein one end of the frustum portion (13) far away from the open hole (5) is provided with a counter bore (14) matched with the fixed shaft (12), a plurality of balls (15) used for rotating connection are arranged between the counter bore (14) and the fixed shaft (12), and tracks for the balls (15) to roll are arranged on the counter bore (14) and the fixed shaft (12).

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