Drill bit, reaming machine tool and reaming method and application of reaming machine tool

Abstract

The invention provides a drill bit, a reaming machine tool and a reaming method and application of the reaming machine tool, the drill bit comprises a drill bit end, a folding reaming device, a drill bit threaded section, a drilling guide section, a drill bit gear section and a pull rod located in a reserved hole channel in the drill bit, the drill bit is made to conduct fixed-point drilling through the drill bit end, and a spherical drill hole is formed in the bottom of a hole through the folding reaming device. The drilling guide section plays a role in fixing and ensures that the drill bits do steering motion on the same axis, the drill bit gear section provides rotating force in the axis direction for the drill bits, the pull rod pulls the end portions of the drill bits to move, fixed-point drilling on a wall plate can be achieved through mutual cooperation of all the components between the drill bits, and a spherical drill hole is formed in the bottom of a cavity. And the construction process is simple, convenient and fast to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a drill bit, a hole enlarging machine and a hole enlarging method and application thereof. Background Art

[0002] With the rapid development of new materials and construction techniques and the gradual improvement of people's awareness of environmental protection and energy conservation, ALC (autoclaved lightweight aerated concrete) boards are increasingly used as an energy-saving material in the construction of filling walls of large venues.

[0003] However, ALC boards also have their own limitations during application. One is that the strength of the board itself is relatively low, and it is difficult to rely on its own strength to mount external equipment. In addition, the board is generally a whole board with a maximum height of 6m, and is mainly fixed by connecting parts at the upper and lower ends. It is difficult to add a fixing block in the middle of the board to fix the external equipment.

[0004] In order to mount external equipment, the ALC board construction drawing "13J104" provides a node method. The working principle is to drill a reserved hole with a spherical lower part, place embedded parts in the hole, and pour cement mortar. The anchoring effect of the spherical hole and the bonding effect of the mortar and the surrounding plates are used to firmly fix the iron parts in the reserved position, so that external equipment can be mounted through the iron parts.

[0005] However, in the construction process, it is usually difficult to form a hole in the plate using existing tools and construction methods. As a result, the requirements of the atlas cannot be met during the construction process, which buries quality risks.

[0006] Therefore, there are still many problems when ALC boards need to drill holes for embedded parts when installing external equipment. Summary of the invention

[0007] The present invention provides a drill bit, a hole enlarging tool, a hole enlarging method and application thereof, which are used to solve the problem that it is difficult to form a hole for a ball at the bottom of the hole inside the ALC board when drilling holes for embedded parts when installing external equipment.

[0008] In a first aspect, the present invention provides a drill bit, comprising: a drill bit end, a folding reaming device, a drill bit threaded section, a drilling guide section, a drill bit gear section, and a pull rod located in a reserved channel inside the drill bit; The end of the drill bit end is connected to the front end of the folding reaming device, the end of the folding reaming device is connected to the front end of the drill bit threaded section, the end of the drill bit threaded section is connected to the front end of the drill bit guide section, and the end of the drill bit guide section is connected to the end of the drill bit gear section; The front end of the pull rod is connected with the end of the drill bit.

[0009] Compared with the prior art, the advantages of the present invention are as follows: the drill bit includes a drill bit end, a folding reaming device, a drill bit threaded section, a drilling guide section, a drill bit gear section and a pull rod located in a reserved channel inside the drill bit. The drill bit is enabled to drill at a fixed point through the drill bit end, the folding reaming device forms a spherical drill hole at the bottom of the cavity, the drilling guide section plays a fixing role and ensures that the drill bit performs steering movement on the same axis, the drill bit gear section provides the drill bit with a rotational force along the axial direction, and the pull rod pulls the drill bit end to move. Through the mutual cooperation of the various components of the drill bit, it is possible to achieve fixed-point drilling on the wall panel and form a spherical drill hole at the bottom of the cavity. It is formed in one step and the construction process is simple, convenient and fast.

[0010] Furthermore, the folding hole expansion device includes three single-piece threaded iron sheets; the threaded iron sheets are evenly arranged along the periphery of the drill bit, and the threaded iron sheets are divided into two sections. The two sections of the threaded iron sheets are connected by folding breakpoints and are respectively connected to the drill bit end and the drill bit threaded section; when the drill bit end is retracted and the drill bit threaded section is fixed, the folding breakpoints bend in a direction away from the axis, and the axial maximum outer diameter of the folding hole expansion device is larger than the drill bit end.

[0011] Furthermore, the top end of the drill bit is conical.

[0012] In a second aspect, the present invention provides a hole reaming machine, comprising the drill bit described in the first aspect.

[0013] Furthermore, it also includes: a guide bracket, a combined bearing and a telescopic rod; The drill bit is sleeved inside the guide bracket; the rear end of the pull rod of the drill bit has a pull rod threaded section, and the pull rod threaded section forms a mechanical connection with the combined bearing; the telescopic rod is fixedly connected to the combined bearing to provide power for the pull rod to move forward and backward along the axial direction.

[0014] Further, the outer side of the guide bracket includes a fixedly connected positioning bracket and a machine frame, and the inner side is provided with a bracket bearing, the outer side of the bracket bearing is connected to the positioning bracket, and the inner side is in contact with the drill bit; the front end of the drill bit guide section and the end of the drill bit gear section are respectively provided with guide brackets; and / or, The combined bearing includes a rotating bearing and a supporting bearing connected front and rear, the threaded section of the pull rod is mechanically connected to the rotating bearing, and the supporting bearing provides support force for the end of the drill bit during drilling; and / or, The telescopic rod comprises a screw rod, a gear nut assembly and a guide sleeve. The screw rod is sleeved inside the guide sleeve. The screw rod and the gear nut assembly form a mechanical connection. The gear and the nut form a mechanical connection to drive the nut to rotate. The forward and reverse rotation of the nut controls the extension and retraction of the screw rod in the guide sleeve.

[0015] Furthermore, it also includes: a mechanical outer frame, a battery, an operating handle, a brushless motor, a stepper motor, a motor control button, and a single-chip stepper motor controller; The mechanical outer frame is used to support and fix the hole expanding machine; the brushless motor and the stepper motor are arranged inside the mechanical outer frame; The brushless motor is used to provide the drill with a rotational force along the axis direction, and the stepper motor is used to provide the drill with an axial force along the axis direction; Batteries are used to power brushless motors and stepper motors; The motor control button is arranged on the operating handle, and the operating handle is connected to the mechanical outer frame; The single-chip stepper motor controller is used to control the working state of the stepper motor.

[0016] In a third aspect, the present invention provides a hole expansion method, which is performed using the hole expansion machine described in the second aspect.

[0017] Further, the following steps are included: (1) Use a hole reaming machine to drill into the wall panel to a depth of 5-6 cm; (2) Press the motor drive button to gradually open and retract the folding hole expansion device to complete the bottom hole expansion process and form a spherical drill hole; (3) After pulling out the drill bit, the spherical drill hole is cleaned, moistened with water, grouted and embedded in sequence.

[0018] In a fourth aspect, the present invention provides a method for punching an ALC board, which uses the hole expanding tool described in the fourth aspect or includes the hole expanding method described in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the exterior of a drill bit in an embodiment of the present invention; Figure 2 is a schematic diagram of the interior of a drill bit in an embodiment of the present invention; Figure 3 is an external schematic diagram of a hole reaming tool in an embodiment of the present invention; Figure 4 is a schematic diagram of the interior of a hole reaming tool in an embodiment of the present invention; Figure 5 is a top view of the third gear in the embodiment of the present invention; wherein a is a top view and b is a side view; Figure 6 Schematic diagram of the fifth gear in the embodiment of the present invention; wherein a is a top view, b is a side view, and c is a stereogram; Figure 7 Schematic diagram of a front guide bracket in an embodiment of the present invention; wherein a is a front view, b is a side view, and c is a side cross-section; Figure 8 Schematic diagram of the rear end guide bracket in the embodiment of the present invention; wherein a is a front view, b is a side view, and c is a side cross-section; Fig. 9 Schematic diagram of a combined bearing support in an embodiment of the present invention; wherein a is a side view and b is a side cross-sectional view; Fig.10 Schematic diagram of a guide sleeve in an embodiment of the present invention; wherein a is a stereoscopic diagram and b is a cross-sectional diagram; Fig.11 Schematic diagram of embedded parts layout points in an embodiment of the present invention; Fig.12 Schematic diagram of the hole expansion method in an embodiment of the present invention.

[0020] Description of reference numerals: 1. Drill bit; 101. Drill bit end; 102. Folding reaming device; 103. Drill bit threaded section; 104. Drill bit guide section; 105. Drill bit gear section; 106. Breakpoint; 107. Reserved channel; 108. Pull rod; 109. Pull rod threaded section; 2. Front guide bracket; 3. Rear guide bracket; 4. Combined bearing; 41. Rotating bearing; 42. Support bearing; 43. Back plate; 5. Telescopic rod; 6. Mechanical outer frame; 7. Motor heat dissipation hole; 8. Battery; 9. Operating handle; 10. Stepper motor forward control button; 11. Stepper motor reverse control button; 12. Brushless motor control button; 13. Brushless motor; 14. Motor cooling fan; 15. First gear; 16. Second gear; 17. Single-chip stepper motor controller; 18. Stepper motor; 19. Third gear; 20. Fourth gear; 21. Fifth gear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 10 The present invention provides a drill bit 1, comprising: a drill bit end 101, a folding reaming device 102, a drill bit threaded section 103, a drilling guide section, a drill bit gear section 105, and a pull rod 108 located in a reserved channel 107 inside the drill bit; The end of the drill end 101 is connected to the front end of the folding reaming device 102, the end of the folding reaming device 102 is connected to the front end of the drill thread section 103, the end of the drill thread section 103 is connected to the front end of the drill guide section 104, and the end of the drill guide section 104 is connected to the end of the drill gear section 105; The front end of the pull rod 108 is connected to the drill bit end 101 .

[0023] In a specific embodiment, the end of the drill hole is in a tapered state, which is convenient for the drill to drill at a fixed point.

[0024] The folding hole expansion device 102 is three single-piece threaded iron sheets, which are evenly arranged around the drill bit, and the two sections of the iron sheet are respectively connected to the top of the drill bit and the drill thread section 103. Each iron sheet is divided into two sections, which are connected by a breakpoint 106 similar to a hinged form.

[0025] The drill bit thread section 103 is the same as that of a conventional drill bit.

[0026] The drilling guide section is a guide device for the drill bit, which mainly plays a guiding and fixing role for the drill bit. The guide section passes through the guide bracket of the machine to ensure that the drill bit can be turned on the same axis.

[0027] The drill gear section 105 is a power receiving device of the drill, which is connected to the power transmission gear of the brushless motor 13 of the machine tool to receive the rotational force transmitted by the brushless motor 13.

[0028] The pull rod 108 inside the drill bit is the core component of the drill bit. The front end of the pull rod is welded and fixed to the drill bit end 101, and a reserved channel 107 is passed in the middle. The end of the pull rod is connected to the combined bearing 4. During the drilling process of the drill bit, the pull rod 108 rotates with the drill bit. When the folding reaming device 102 needs to work, the combined bearing 4 moves backward, pulling the pull rod 108 to move backward. When the pull rod 108 moves backward, it pulls the front end drill bit backward. At this time, the rear end of the drill bit guide section 104 is stuck at the rear end guide device, and the rear end guide device limits the overall backward displacement of the drill bit. When the front end of the drill bit folding reaming device 102 is retracted and the rear end is fixed, the folding breakpoint 106 is bent in the direction away from the axis. The maximum axial outer diameter of the folding reaming device 102 is larger than the drill bit end 101. The folding section forms a reaming device that is thicker than the drill section, and the reaming operation at the bottom is completed under the rotation of the drill bit.

[0029] In a second aspect, the present invention further provides a hole reaming tool, comprising the drill bit described in the first aspect. Further, it also comprises: a guide bracket, a combined bearing 4 and a telescopic rod 5; The drill bit is sleeved inside the guide bracket; the rear end of the pull rod of the drill bit has a pull rod threaded section 109, and the pull rod threaded section 109 forms a mechanical connection with the combined bearing 4; the telescopic rod 5 is fixedly connected to the combined bearing 4 to provide power for the pull rod to move forward and backward along the axial direction.

[0030] In a specific embodiment, the guide bracket is divided into two parts, front and rear, which are respectively arranged at the front end of the drill guide section 104 and the end of the drill gear section 105; the outer side of the guide bracket is a square positioning frame welded to the machine frame, and a bracket bearing is arranged inside, the outer side of the bracket bearing is connected to the square positioning frame, and the inner side is in contact with the drill bit.

[0031] The front guide bracket 2 mainly plays the role of limiting the up, down, left, and right displacement of the drill bit, and the rear guide bracket 3 not only limits the up, down, left, and right displacement of the drill bit, but also limits the rearward displacement of the drill bit through the baffle attached to the rear side thereof.

[0032] The combined bearing 4 belongs to the rear end component of the guide bracket, and is composed of two bearings at the front end and the rear end. The front end bearing is a rotating bearing 41 with a spiral pattern. When the pull rod is installed, the pull rod threaded section 109 at the rear end of the pull rod forms a mechanical connection with the internal spiral pattern of the rotating bearing 41. When the pull rod rotates, the internal ring of the rotating bearing 41 rotates with the pull rod, ensuring the external stability of the combined bearing 4. The rear end bearing is a support bearing 42, and a back plate 43 is also provided at the rear end of the support bearing 42. During the drilling process of the drill bit, the pull rod bears a backward thrust. In order to ensure that the pull rod provides a certain support force to the end 101 of the drill bit during drilling, and to ensure that the folding hole expansion device 102 does not fold in advance, the support bearing 42 at the rear end of the pull rod plays a role in preventing the pull rod from moving backward.

[0033] The telescopic rod 5 is a power device for the drill bit pull rod to move forward and backward, and the pull rod is welded to the combined bearing 4. The telescopic rod 5 is composed of three parts: a screw rod, a gear nut assembly, and a guide sleeve. When the bolt rod needs to move forward and backward, the power device drives the gear of the gear bolt assembly to rotate, and the gear drives the nut connected to it to rotate. The nut controls the screw rod to extend and retract in the guide sleeve by forward and reverse rotation.

[0034] Specifically, it also includes: a mechanical outer frame 6, a battery 8, an operating handle 9, a brushless motor 13, a stepper motor 18, a motor control button, and a single-chip stepper motor controller.

[0035] The mechanical outer frame 6 is the exoskeleton of the hole reaming machine, which plays the role of supporting and fixing all equipment.

[0036] The battery 8 is the power source for all the motors.

[0037] The operating handle 9 is a hand-held structure of the reaming tool, and motor control buttons are installed on it to facilitate workers to hold the machine for operation; the motor control buttons include a stepper motor forward control button 10, a stepper motor reverse control button 11 and a brushless motor control button 12.

[0038] The brushless motor 13 is used to provide a rotational force along the axial direction for the drill bit. The brushless motor 13 transfers the power to the drill bit through the first gear 15 and the second gear 16 .

[0039] The stepper motor 18 is used to provide an axial force along the axis direction for the drill bit; the gear nut assembly includes a third gear 19, a fourth gear 20 and a fifth gear 21; the stepper motor 18 transmits power to the telescopic rod 5 through the gear nut assembly.

[0040] The single-chip stepper motor controller 17 is the control mechanism of the stepper motor 18 and the core component of the stepper motor 18. The single-chip stepper motor controller 17 is programmed in advance before being placed in the reaming machine. By setting the frequency and pulse of the single-chip stepper motor controller 17, the working state of the stepper motor 18 is specified in advance. When setting, the higher the frequency, the faster the stepper motor rotates, and the larger the pulse, the more turns the stepper motor rotates.

[0041] The mechanical outer frame 6 is also provided with motor heat dissipation holes 7 at corresponding positions of the brushless motor 13 and the stepper motor 18 ; the brushless motor and the stepper motor 18 are also respectively connected to motor heat dissipation fans 14 .

[0042] Optionally, the frequency of the single-chip stepper motor controller is to drive the folding and reaming device 102 to be retracted (released) within 30 seconds, and the pulse is to complete the release (expansion) of the folding and reaming device 102 with one button press.

[0043] Third, see Fig.11 and Fig.12 The present invention provides a hole expansion method, which is performed using the hole expansion machine described in the second aspect.

[0044] Specifically, the steps include: (1) Use a hole reaming machine to drill into the wall panel to a depth of 5-6 cm; (2) Press the motor drive button to gradually open and retract the folding hole expansion device to complete the bottom hole expansion process and form a spherical drill hole; (3) After pulling out the drill bit, the spherical drill hole is cleaned, moistened with water, grouted and embedded in sequence.

[0045] It can be understood that in step (1), the wall panels need to be built and installed after the wall has been completed and has a certain strength, and the embedded parts layout points have been determined and marked.

[0046] In a fourth aspect, the present invention further provides a method for punching an ALC board, which uses the hole expanding tool described in the fourth aspect or includes the hole expanding method described in the third aspect.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the protection scope of the present invention.

Claims

1. A drill bit, It is characterized in that include: The drill bit end, the folding reaming device, the drill bit threaded section, the drilling guide section, the drill bit gear section and the pull rod located in the reserved channel inside the drill bit; The end of the drill bit end is connected to the front end of the folding reaming device, the end of the folding reaming device is connected to the front end of the drill bit threaded section, the end of the drill bit threaded section is connected to the front end of the drill bit guide section, and the end of the drill bit guide section is connected to the end of the drill bit gear section; The front end of the pull rod is connected with the end of the drill bit.

2. The drill bit according to claim 1, It is characterized in that The folding hole expansion device includes three single-piece threaded iron sheets; the threaded iron sheets are evenly arranged along the periphery of the drill bit, and the threaded iron sheets are divided into two sections. The two sections of the threaded iron sheets are connected by folding breakpoints and are respectively connected to the drill bit end and the drill bit thread section; when the drill bit end is retracted and the drill bit thread section is fixed, the folding breakpoint bends in a direction away from the axis, and the axial maximum outer diameter of the folding hole expansion device is larger than the drill bit end.

3. The drill bit according to claim 2, It is characterized in that The tip of the drill bit end is tapered.

4. A hole expanding machine, It is characterized in that A drill bit comprising any one of claims 1 to 3.

5. The hole expanding tool according to claim 4, It is characterized in that Also includes: Guide bracket, combined bearing and telescopic rod; The drill bit is sleeved inside the guide bracket; the rear end of the pull rod of the drill bit has a pull rod threaded section, and the pull rod threaded section forms a mechanical connection with the combined bearing; the telescopic rod is fixedly connected to the combined bearing to provide power for the pull rod to move forward and backward along the axial direction.

6. The hole expanding tool according to claim 5, It is characterized in that The outer side of the guide bracket includes a fixedly connected positioning bracket and a machine frame, and the inner side is provided with a bracket bearing, the outer side of the bracket bearing is connected to the positioning bracket, and the inner side is in contact with the drill bit; the front end of the drill bit guide section and the end of the drill bit gear section are respectively provided with guide brackets; and / or, The combined bearing includes a rotating bearing and a supporting bearing connected front and rear, the threaded section of the pull rod is mechanically connected to the rotating bearing, and the supporting bearing provides support force for the end of the drill bit during drilling; and / or, The telescopic rod comprises a screw rod, a gear nut assembly and a guide sleeve. The screw rod is sleeved inside the guide sleeve. The screw rod and the gear nut assembly form a mechanical connection. The gear and the nut form a mechanical connection to drive the nut to rotate. The forward and reverse rotation of the nut controls the extension and retraction of the screw rod in the guide sleeve.

7. The hole reaming tool according to claim 5 or 6, It is characterized in that Also includes: Mechanical outer frame, battery, operating handle, brushless motor, stepper motor, motor control button, single-chip stepper motor controller; The mechanical outer frame is used to support and fix the hole expanding machine; the brushless motor and the stepper motor are arranged inside the mechanical outer frame; The brushless motor is used to provide the drill with a rotational force along the axis direction, and the stepper motor is used to provide the drill with an axial force along the axis direction; Batteries are used to power brushless motors and stepper motors; The motor control button is arranged on the operating handle, and the operating handle is connected to the mechanical outer frame; The single-chip stepper motor controller is used to control the working state of the stepper motor.

8. A hole enlarging method, It is characterized in that The expansion is carried out using the hole expanding machine described in any one of claims 4 to 7.

9. The hole expanding method according to claim 8, It is characterized in that The following steps are involved: (1) Use a hole reaming machine to drill into the wall panel to a depth of 5-6 cm; (2) Press the motor drive button to gradually open and retract the folding hole expansion device to complete the bottom hole expansion process and form a spherical drill hole; (3) After pulling out the drill bit, the spherical drill hole is cleaned, moistened with water, grouted and embedded in sequence.

10. A method for punching holes in an ALC board. It is characterized in that The hole expanding method according to any one of claims 4 to 7 is carried out or includes the hole expanding method according to claim 8 or 9.

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