Drill bit for prefabricated slab trepanning
By integrating the water injection head assembly and spiral groove on the drill bit, the problem of high temperature damage is solved, and prefabricated plate opening processing is achieved that effectively reduces the cooling and enhances cutting force is achieved.
Patent Information
- Application Number
- CN202420629069.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Existing drill bits are easily damaged by high temperature and high heat during the processing of prefabricated plates, which are difficult to effectively cool down and affect their service life.
A drill bit including a drill bit body and a drill pipe is designed. The drill bit body is a barrel-shaped structure and is equipped with a water head assembly to reduce the heat of the edge by injecting water, and discharge the cutting powder through a spiral groove to avoid secondary cutting.
It effectively reduces the heat of the drill bit during the cutting process, extends the service life, and increases the cutting force through the spaced edge, improving processing efficiency.
Smart Images
Figure CN222156099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prefabricated plate production, in particular to a drill bit for prefabricated plate hole opening processing. Background Art
[0002] Prefabricated panels are the floor panels used in early buildings. They are the modules or panels used in the project.
[0003] As the name suggests, precast panels are concrete panels that are pre-cast through molds and directly transported to the construction site for installation.
[0004] When installing prefabricated panels at a construction site, the prefabricated panels need to be fixed and limited, so holes need to be processed on the prefabricated panels to facilitate fixing and limiting the prefabricated panels using other structural parts. Since the drill bit will generate high temperature and heat when processing the holes, it is easy to burn the drill bit. For this reason, the present application specifically discloses a drill bit for prefabricated panel hole opening processing. Utility Model Content
[0005] The utility model aims to solve the existing problems and provides a drill bit for processing holes in prefabricated plates.
[0006] The utility model is realized through the following technical scheme: a drill bit for prefabricated plate hole opening processing, comprising a drill bit body and a drill rod, the rear end of the drill bit body is integrally connected to the drill rod, the drill bit body is arranged in a barrel-shaped structure, a base plate is rotatably sleeved on the drill rod, a plurality of water injection head assemblies are circumferentially and throughly connected on the base plate, the column head of the water injection head assembly is pressed into a guide groove, the guide groove is arranged at the outer end of the drill bit body, and a plurality of through holes matching the water injection head assembly are arranged at intervals on the guide groove.
[0007] As a further improvement to the above solution, the water injection head assembly is threadedly connected to the base plate for adjusting the position.
[0008] As a further improvement of the above scheme, the water injection head assembly includes a pen tube, a through hole No. 2 is arranged in the pen tube, a step is arranged at the head end of the through hole, a step slide is arranged inside the through hole, a column head is arranged at the outer end of the step slide, a spring is pressed above the step slide, the tail end of the pen tube is threadedly connected to the end column, and a water pipe is connected to the side wall of the pen tube; when the column head is located in the guide groove, the column head is pressed against the bottom of the guide groove, and pressurized water is contained in the through hole No. 2.
[0009] As a further improvement to the above scheme, an inner water trough is arranged on the side wall at the lower end of the second through hole, and an outer water trough is arranged on the outer wall of the step slide column, which is used to allow the water injected into the pen tube to flow out to the water flow channel of the first through hole. When there is no external force pressing on the column head, the column head slides out under the action of the spring, and the inner water trough and the outer water trough are connected with the outside to form a water flow channel.
[0010] As a further improvement to the above solution, a notch is provided on the end port of the drill body away from the drill rod, and an arc-shaped cutting edge for increasing cutting force is provided on the outer edge of the port.
[0011] As a further improvement to the above solution, a spiral groove for chip discharge is provided on the outer curved surface of the drill body.
[0012] Compared with the prior art, the utility model has the following advantages: simple structure, reasonable design, novel and unique concept, through the rotation of the drill body, the intermittent cutting edge on the port of the drill body cuts the prefabricated plate, the spaced cutting edge is used to increase the cutting force, the cut powder is discharged through the spiral groove, and the secondary cutting of the powder is avoided. In addition, water is injected into the through hole through the water injection head to reduce the heat generated by the cutting edge, so as to avoid the cutting edge being damaged by burning due to high temperature, so as to ensure the service life of the cutting edge. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the first structural view of the utility model.
[0014] Figure 2 This is a schematic diagram of the second structural view of the utility model.
[0015] Figure 3 This is a schematic diagram of the structure of the water injection head assembly in the first state.
[0016] Figure 4 This is a schematic diagram of the second state structure of the water injection head assembly. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings.
[0018] like Figures 1 to 4 As shown in the figure, a drill bit for prefabricated plate hole opening processing includes a drill bit body 1 and a drill rod 2. The rear end of the drill bit body 1 is integrally connected to the drill rod 2. The drill bit body 1 is configured as a barrel structure. A base plate 3 is rotatably sleeved on the drill rod 2. A plurality of water injection head assemblies 4 are circumferentially and throughly connected on the base plate 3. The column head of the water injection head assembly 4 presses into a guide groove 5. The guide groove 5 is arranged at the outer end of the drill bit body 1. A plurality of through holes 6 matching the water injection head assembly 4 are arranged at intervals on the guide groove 5.
[0019] As a further improvement to the above solution, the water injection head assembly 4 is threadedly connected to the base plate 3 for adjusting the position.
[0020] As a further improvement to the above scheme, the water injection head assembly 4 includes a pen tube 41, a through hole 2 42 is arranged in the pen tube 41, a step is arranged at the head end of the through hole 2 42, a step slide 45 is sleeved therein, a column head is arranged at the outer end of the step slide 45, a spring 43 is pressed against the step slide 45, the tail end of the pen tube 41 is threadedly connected to the end column 47, and a water pipe 48 is connected to the side wall of the pen tube 41; when the column head is located in the guide groove 5, the column head is pressed against the bottom of the guide groove 5, and at this time, pressurized water is contained in the through hole 2 42.
[0021] As a further improvement to the above scheme, an inner water trough 44 is provided on the side wall at the lower end of the through hole 2 42, and an outer water trough 46 is provided on the outer wall of the step slide 45, which is used for the water injected into the pen tube 41 to flow out to the water flow channel of the through hole 1 6. When there is no external force pressing on the column head, the column head slides out under the action of the spring 43, and the inner water trough 44 and the outer water trough 46 are connected with the outside to form a water flow channel.
[0022] As a further improvement to the above solution, a notch 7 is provided on the end of the drill body 1 away from the drill rod 2, and an arc-shaped cutting edge 9 for increasing cutting force is provided on the outer edge of the port.
[0023] As a further improvement to the above solution, a spiral groove for chip discharge is provided on the outer curved surface of the drill body 1 .
[0024] The working principle of a drill bit for drilling holes in prefabricated panels is as follows: a drill rod 2 is mounted on a driving device (such as a drill gun), and then an external water pipe 48 is connected to the pipe wall, and then the prefabricated panel can be drilled. The cutting edge of the drill bit is placed at the position where the hole needs to be drilled, and the drill bit is driven to rotate by the driving device, and the prefabricated panel is cut by the interval cutting edge, and the powder generated during cutting is discharged through the groove on the outer wall of the rotating drill bit;
[0025] When the drill bit rotates, the base plate on the drill rod 2 does not rotate. When the column head at the lower end of the step slide column 45 is located in the guide groove 5, the column head is pressed against the bottom of the guide groove 5 and is acted upon by the spring. The through hole 2 42 contains pressurized water. After the column head is transferred to the through hole 1 6 , the column head slides outward under the action of the spring 43. The water in the pen tube 41 flows out to the through hole 1 6 along the inner water trough 44 and the outer water trough 46, and then the water flows to the position of the drill bit on the prefabricated board to cool the drill bit 1.
[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A drill bit for drilling holes in prefabricated panels, comprising a drill bit body and a drill rod, wherein the rear end of the drill bit body is integrally connected to the drill rod, characterized in that: The drill bit body is configured as a barrel-shaped structure, a base plate is rotatably sleeved on the drill rod, a plurality of water injection head assemblies are circumferentially and through-connected on the base plate, the column head of the water injection head assembly presses into the guide groove, the guide groove is configured at the outer end portion of the drill bit body, and a plurality of through holes matching the water injection head assembly are spaced apart on the guide groove.
2. A drill bit for prefabricated plate hole processing according to claim 1, characterized in that: The water injection head assembly is threadedly connected to the base plate.
3. A drill bit for drilling holes in prefabricated panels according to claim 1, characterized in that: The water injection head assembly includes a pen tube, a through hole two is arranged in the pen tube, a step is arranged at the head end of the through hole two, a step slide column is arranged inside the through hole, a column head is arranged at the outer end of the step slide column, a spring is pressed above the step slide column, the tail end of the pen tube is threadedly connected to the end column, and a water pipe is connected to the side wall of the pen tube.
4. A drill bit for drilling holes in prefabricated panels according to claim 3, characterized in that: An inner water trough is arranged on the side wall of the second lower end of the through hole, and an outer water trough is arranged on the outer wall of the step slide column.