Drill bit mounting mechanism of drilling machine

Abstract

The utility model relates to the technical field of drilling machines, and discloses a drilling machine drill bit mounting mechanism which comprises a drilling machine head, a fixing frame is fixedly connected to the bottom of an inner cavity of the drilling machine head through bolts, ejector rods are slidably connected to the side walls of inner cavities of multiple sets of sliding grooves, and fixing pieces are arranged at the ends, away from each other, of the ejector rods. A limiting wheel is rotationally connected to the side wall of an inner cavity of the fixing frame through a rotating shaft, sliding rods are slidably connected to the side walls of inner cavities of the multiple sets of arc-shaped grooves, the bottoms of the multiple sets of sliding rods are fixedly connected to the top of a top rod, and a braking part is arranged at the top of the limiting wheel. Through cooperative use of the fixing piece, the braking piece and other related assemblies, manual operation can be replaced to rotate the rotary knob to mount and fix the drill bit, corresponding potential safety hazards are reduced, meanwhile, the clamping force can be better controlled, and the stability of the drill bit in the mounting and later use process can be further improved.

Description

Technical Field

[0001] The present application relates to the technical field of drilling machines, and in particular to a drilling machine drill bit mounting mechanism. Background Art

[0002] A drilling machine is a mechanical device used to drill holes in different types of materials. It is usually composed of a motor, a drill bit, a drilling clamping device, and a control system. The drill bit is a tool component used to drill holes in various materials. The existing installation of the drill bit of the drilling machine is generally done by manually turning the threaded knob, and then driving the internal fixing part to clamp and fix one end of the drill bit;

[0003] With respect to the above-mentioned related technologies, the inventor believes that, in the prior art, the worker manually rotates the threaded knob to drive the fixing member to clamp and fix one end of the drill bit, thereby realizing the installation of the drill bit. Since the manual rotation of the threaded knob requires gradual adjustment of the clamping force to ensure that the drill bit is firmly fixed, it is easily affected by human factors, such as uneven force, inaccurate angle, etc., resulting in uneven or unstable clamping force, affecting the fixing effect of the drill bit, and manual operation may have safety hazards, especially if the operation of the drilling machine is not stopped in time during the adjustment process, which may cause accidental injuries;

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that the existing drilling machine installs and fixes its drill bit by manually turning the threaded knob, which may cause uneven and unstable clamping force, affect the drill bit fixing effect, and have corresponding safety hazards, the present application provides a drilling machine drill bit installation mechanism.

[0006] The present application provides a drilling machine drill bit installation mechanism adopts the following technical solution:

[0007] A drilling machine drill bit mounting mechanism comprises a drilling machine head, wherein the bottom of the inner cavity of the drilling machine head is fixedly connected to a fixing frame by bolts, a plurality of groups of sliding grooves are opened on the top of the fixing frame, the inner cavity side walls of several groups of the sliding grooves are slidably connected to push rods, the ends of several groups of push rods away from each other are provided with fixing parts, and the fixing parts are arranged inside the drilling machine head, the inner cavity side walls of the fixing frame are rotatably connected to a limiting wheel via a rotating shaft, the surface of the limiting wheel is opened with a plurality of groups of arc grooves, the inner cavity side walls of several groups of the arc grooves are slidably connected to sliding rods, the bottoms of several groups of the sliding rods are fixedly connected to the top of the push rods, a brake part is provided on the top of the limiting wheel, and the brake part is arranged inside the drilling machine head.

[0008] Preferably, the fixing member comprises a fixing plate and an anti-skid pad, and ends of several groups of push rods that are away from each other are fixedly connected to the fixing plate, and inner cavity side walls of several groups of fixing plates are fixedly connected to the anti-skid pad.

[0009] Preferably, the braking component includes a connecting rod, a self-locking motor, a fixed rod, a worm and a worm wheel. The inner cavity side wall of the drilling machine head is fixedly connected to the self-locking motor by bolts. The self-locking motor is fixedly connected to the fixed rod by an output shaft. The fixed rod rotates through the fixed frame at one end away from the self-locking motor.

[0010] Preferably, one end of the fixing rod passes through the fixing frame and is rotatably connected to the inner cavity side wall of the fixing frame via a rotating shaft, a worm is fixedly connected to the surface of the fixing rod, and a worm wheel is meshingly connected to the surface of the worm.

[0011] Preferably, the top of the worm gear is rotatably connected to the top of the inner cavity of the drilling machine head via a rotating shaft, the bottom of the worm gear is fixedly connected to a connecting rod via bolts, and the bottom of the connecting rod is fixedly connected to the top of the limiting wheel via bolts.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] By using the fixing parts, the braking parts and other related components in coordination, one end of the drill bit is inserted into the drilling machine head, and the self-locking motor and the worm gear and other braking parts are used for transmission, which can drive the limiting wheel to rotate, thereby driving the multiple sets of sliding rods in the arc groove to slide, and at this time, the top rod and the fixing plate at one end thereof can be driven to move, and the fixing plate can be used to clamp and fix one end of the drill bit, and the anti-slip pad can be provided to further improve the stability of the drill bit installation, and the transmission of the worm gear and the self-locking motor itself have good self-locking performance, which can further improve the stability of the drill bit during use after installation; compared with the prior art, the overall operation is simple, and it can replace manual rotation of the knob to install and fix the drill bit, reducing the corresponding safety hazards, and at the same time can better control the clamping force, which can further improve the installation of the drill bit and the stability during later use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0015] Figure 2 is a cross-sectional view of a drilling machine head and a schematic diagram of a partial structure of related components according to an embodiment of the application;

[0016] Figure 3 It is a cross-sectional view of a fixing frame and a schematic diagram of the local structure of related components of an embodiment of the application.

[0017] Explanation of the accompanying drawings: 1. Drilling machine head; 2. Anti-slip pad; 3. Self-locking motor; 4. Fixed rod; 5. Worm; 6. Worm wheel; 7. Fixed frame; 8. Fixed plate; 9. Connecting rod; 10. Limiting wheel; 11. Arc groove; 12. Sliding rod; 13. Sliding groove; 14. Push rod. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 This application is described in further detail.

[0019] The present application embodiment discloses a drilling machine drill bit installation mechanism. Figure 1-3 , a drilling machine drill bit installation mechanism, including a drilling machine head 1, the bottom of the inner cavity of the drilling machine head 1 is fixedly connected with a fixing frame 7 by bolts, a plurality of groups of sliding grooves 13 are opened on the top of the fixing frame 7, the inner cavity side walls of the plurality of groups of sliding grooves 13 are slidably connected with push rods 14, the ends of the plurality of groups of push rods 14 away from each other are provided with fixing parts, and the fixing parts are arranged inside the drilling machine head 1, the inner cavity side walls of the fixing frame 7 are rotatably connected with a limiting wheel 10 through a rotating shaft, the surface of the limiting wheel 10 is opened with a plurality of groups of arc grooves 11, the inner cavity side walls of the plurality of groups of arc grooves 11 are slidably connected with sliding rods 12, the bottoms of the plurality of groups of sliding rods 12 are fixedly connected to the top of the push rod 14, a brake is arranged on the top of the limiting wheel 10, and the brake is arranged inside the drilling machine head 1, the fixing parts include a fixing plate 8 and an anti-skid pad 2, the ends of the plurality of groups of push rods 14 away from each other are fixedly connected with the fixing plate 8, and the inner cavity side walls of the plurality of groups of fixing plates 8 are fixedly connected with the anti-skid pad 2;

[0020] By adopting the above technical solution, by inserting one end of the drill bit into the drilling machine head 1, the brake part provided on the top of the limiting wheel 10 can be used for transmission to drive the limiting wheel 10 to rotate. At this time, the sliding rod 12 is limited by the multiple sets of arc grooves 11 opened by the limiting wheel 10. When the limiting wheel 10 rotates, the multiple sets of sliding rods 12 can be driven to move, so that the movement of the sliding rod 12 can drive the multiple sets of sliding grooves 13 The inner cavity side wall of the push rod 14 that is slidably connected can be driven to move. At this time, the one end of the drill bit can be clamped and fixed by the fixing plate 8 fixedly connected to one end of the multiple sets of push rods 14, and the friction between the drill bit and the anti-slip pad 2 can be increased to improve the installation stability of the drill bit.

[0021] Reference Figure 1 , Figure 2 and Figure 3The brake member includes a connecting rod 9, a self-locking motor 3, a fixing rod 4, a worm 5, and a worm wheel 6. The inner cavity side wall of the drilling machine head 1 is fixedly connected with the self-locking motor 3 by bolts, and the self-locking motor 3 is fixedly connected with the fixing rod 4 by an output shaft. The end of the fixing rod 4 away from the self-locking motor 3 rotates through the fixing frame 7, and the end of the fixing rod 4 passing through the fixing frame 7 is rotatably connected to the inner cavity side wall of the fixing frame 7 by a rotating shaft. The surface of the fixing rod 4 is fixedly connected with the worm 5, and the surface of the worm 5 is meshedly connected with the worm wheel 6. The top of the worm wheel 6 is rotatably connected to the top of the inner cavity of the drilling machine head 1 through a rotating shaft. The bottom of the worm wheel 6 is fixedly connected with the connecting rod 9 by bolts, and the bottom of the connecting rod 9 is fixedly connected to the top of the limiting wheel 10 by bolts.

[0022] By adopting the above technical solution, when the drill bit needs to be installed and fixed, it can first be output through the self-locking motor 3 inside the drilling machine head 1. The self-locking motor 3 generally refers to a DC motor with a self-locking function, which can automatically lock the output shaft or load after the power supply is stopped to prevent the load from reversing due to gravity or reverse torque. The self-locking motor 3 is mainly composed of a motor, a reducer and a self-locking mechanism. When the self-locking motor 3 outputs, it can drive the fixed rod 4 and the worm 5 on its surface to rotate, and at this time, the worm wheel 6 meshingly connected to the surface of the worm 5 can be driven to rotate. The worm wheel 6 and worm 5 transmission also have good self-locking properties. In the transmission system, the contact between the inclined surface of the worm 5 and the tooth surface of the worm wheel 6 forms a friction angle, which is generally greater than the helix angle of the worm 5. When the worm wheel 6 tries to drive the worm 5 to rotate, the friction on the worm 5 will hinder the movement of the worm wheel 6 due to the effect of friction, resulting in the worm wheel 6 being unable to drive the worm 5 to rotate, forming a self-locking state. Through the rotation of the worm wheel 6, the limit wheel 10 can be driven to rotate through the connecting rod 9 at the bottom thereof, thereby driving the movement of the corresponding components to fix one end of the drill bit. Moreover, through the self-locking performance of the self-locking motor 3 and the worm 5 and worm wheel 6, the stability of the drill bit during installation and subsequent use can be improved.

[0023] The implementation principle of a drill bit installation mechanism of a drilling machine in the embodiment of the present application is as follows: by inserting one end of the drill bit into the drilling machine head 1, the output can be performed through the self-locking motor 3 inside the drilling machine head 1. The self-locking motor 3 generally refers to a DC motor with a self-locking function, which can automatically lock the output shaft or load after the power supply is stopped to prevent the load from reversing due to gravity or reverse torque. The self-locking motor 3 is mainly composed of a motor, a reducer and a self-locking mechanism. When the self-locking motor 3 outputs, it can drive the fixed rod 4 and the worm 5 on its surface to rotate, and at this time, it can drive the worm wheel 6 meshingly connected to the surface of the worm 5 to rotate. The transmission of the worm wheel 6 and worm 5 also has good self-locking properties. In the transmission system of the worm wheel 6 and worm 5, the contact between the inclined surface of the worm 5 and the tooth surface of the worm wheel 6 forms a friction angle, and this friction angle is generally greater than the helix angle of the worm 5 helix. When the worm wheel 6 tries to drive the worm 5 to rotate, due to the effect of friction, the friction on the worm 5 will hinder the movement of the worm wheel 6, resulting in the worm wheel 6 The worm 5 cannot be driven to rotate, forming a self-locking state. Through the rotation of the worm wheel 6, the limiting wheel 10 can be driven to rotate through the connecting rod 9 at the bottom thereof. By driving the limiting wheel 10 to rotate, the limiting of the sliding rod 12 by the multiple groups of arc grooves 11 opened by the limiting wheel 10 can drive the multiple groups of sliding rods 12 to move when the limiting wheel 10 rotates, so that the movement of the sliding rod 12 can drive the multiple groups of sliding grooves 13 The inner cavity side wall slidingly connected to the top rod 14 can be driven to move. At this time, the fixing plate 8 fixedly connected to one end of the multiple groups of top rods 14 can be used to clamp and fix one end of the drill bit, and the anti-slip pad 2 provided can increase the friction between the drill bit and the drill bit, thereby improving the installation stability of the drill bit. The self-locking performance of the self-locking motor 3 and the worm 5 and worm wheel 6 can improve the stability of the installation of the drill bit and the later use process. At the same time, it replaces the manual rotation of the knob to install and fix the drill bit, which can reduce its corresponding safety hazards and better control the clamping force of the drill bit.

[0024] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0025] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0027] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drilling machine drill bit mounting mechanism, comprising a drilling machine head (1), characterized in that: The bottom of the inner cavity of the drilling machine head (1) is fixedly connected to a fixing frame (7) by bolts, and the top of the fixing frame (7) is provided with a plurality of groups of sliding grooves (13), and the inner cavity side walls of the plurality of groups of the sliding grooves (13) are slidably connected to a push rod (14), and the ends of the plurality of groups of the push rods (14) away from each other are provided with fixing parts, and the fixing parts are arranged inside the drilling machine head (1), and the inner cavity side walls of the fixing frame (7) are rotatably connected to a limiting wheel (10) through a rotating shaft, and the surface of the limiting wheel (10) is provided with a plurality of groups of arc grooves (11), and the inner cavity side walls of the plurality of groups of the arc grooves (11) are slidably connected to a sliding rod (12), and the bottoms of the plurality of groups of the sliding rods (12) are fixedly connected to the top of the push rod (14), and the top of the limiting wheel (10) is provided with a brake, and the brake is arranged inside the drilling machine head (1).

2. A drilling machine drill bit mounting mechanism according to claim 1, characterized in that: The fixing member comprises a fixing plate (8) and an anti-skid pad (2); the ends of the plurality of groups of push rods (14) that are away from each other are fixedly connected to the fixing plate (8); and the inner cavity side walls of the plurality of groups of fixing plates (8) are fixedly connected to the anti-skid pad (2).

3. A drilling machine drill bit mounting mechanism according to claim 1, characterized in that: The brake component comprises a connecting rod (9), a self-locking motor (3), a fixing rod (4), a worm (5), and a worm wheel (6); the inner cavity side wall of the drilling machine head (1) is fixedly connected to the self-locking motor (3) by bolts; the self-locking motor (3) is fixedly connected to the fixing rod (4) by an output shaft; and the fixing rod (4) rotates through a fixing frame (7) at one end away from the self-locking motor (3).

4. A drilling machine drill bit mounting mechanism according to claim 3, characterized in that: One end of the fixing rod (4) passes through the fixing frame (7) and is rotatably connected to the inner cavity side wall of the fixing frame (7) via a rotating shaft; a worm (5) is fixedly connected to the surface of the fixing rod (4); and a worm wheel (6) is meshingly connected to the surface of the worm (5).

5. A drilling machine drill bit mounting mechanism according to claim 4, characterized in that: The top of the worm gear (6) is rotatably connected to the top of the inner cavity of the drilling machine head (1) via a rotating shaft, the bottom of the worm gear (6) is fixedly connected to a connecting rod (9) via bolts, and the bottom of the connecting rod (9) is fixedly connected to the top of the limiting wheel (10) via bolts.

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