CN220994798U - High-hardness three-point flat drill structure for woodworking - Google Patents
High-hardness three-point flat drill structure for woodworking Download PDFInfo
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- CN220994798U CN220994798U CN202323017848.9U CN202323017848U CN220994798U CN 220994798 U CN220994798 U CN 220994798U CN 202323017848 U CN202323017848 U CN 202323017848U CN 220994798 U CN220994798 U CN 220994798U
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- 238000000034 method Methods 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 3
- 239000002023 wood Substances 0.000 abstract description 11
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a high-hardness three-point flat drill structure for woodworking, which comprises a handle and a flat cutter part formed at the front part of the handle; the method is characterized in that: the flat cutter part is of a split structure, and a first chip groove is formed in the front face of the flat cutter part; the section of the first chip groove is of an arc-shaped structure, and the extending direction of the first chip groove is of an arc-shaped structure; the flat cutter part of the flat drill is of a detachable structure, so that the cutting part of the flat cutter part can be replaced locally after being worn, the whole scrapping is not needed, and the resources are saved; chip groove structures extending in arc shapes are arranged on the front side and the back side of the flat knife part, and the cross sections of the chip grooves are also in arc structures; the wood chips are better in fit degree with the chip grooves when discharged in a spiral shape, so that the guiding effect of the chip grooves is improved; the sawdust roll is not easy to break, so that the sawdust is discharged more smoothly; the chip groove structure in the arc form can avoid clamping stagnation of wood chips, reduce loss of the cutting edge of the flat cutter part and prolong the service life of the cutting edge of the flat drill.
Description
Technical Field
The utility model relates to the technical field of flat drill structures, in particular to a high-hardness three-point flat drill structure for woodworking.
Background
Spade drills are typically a tool for woodworking drilling. The drill is easy to control the depth of the hole, is suitable for drilling shallow holes and through holes, and is widely applied to wood materials or other similar materials.
In a common three-point flat drill structure, in the process of processing the counter bore of the wood, the processed wood chips are discharged from the counter bore in a spiral coiled structure; the chip removal groove structure of the common flat drill is a rectangular groove and a linear structure; the chip groove structure is easy to generate chip clamping stagnation and poor in continuous discharging performance of the chips when chip removal is carried out, and the long-time chip removal mode is easy to reduce the service life of the flat drill; in addition, the woodworking flat drill in the flat drill is fast in loss in use, and resources are wasted when the flat drill is replaced, so that a replaceable three-point flat drill structure of the flat drill is needed.
Disclosure of utility model
The utility model aims to solve the technical problems that the high-hardness three-point flat drill structure for woodworking can solve the problems that the cutting part of the traditional three-point flat drill is not easy to replace, and the chip discharging clamping stagnation and the continuous discharging performance are poor due to the poor fit between the chip discharging groove structure of the traditional three-point flat drill and the chips.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a carpenter uses the flat drill structure of three sharp of high hardness, including shank, and form the flat knife part in the anterior part of the said shank; the front part of the flat knife part extends inwards from two side parts to form two shoulders, a first shoulder and a second shoulder, the two shoulders continue to fold inwards and upwards to extend, two gathering parts are respectively formed, and a sharp top is formed at the top of the first gathering part and the second gathering part; the flat knife part is provided with a first side part and a second side part which are mutually flat; the innovation point is that:
The flat knife part is of a split structure and comprises a cutting part and a connecting part, the connecting part and the handle part are of an integral structure, and a clamping cavity for accommodating the cutting part is formed in the end face of the connecting part; one end of the cutting part can be embedded into the clamping cavity of the connecting part and is locked and connected through a screw;
The first shoulder and the second shoulder comprise straight line sections and inclined sections, the straight line sections of the first shoulder are perpendicular to the first side part, and the straight line sections of the second shoulder are perpendicular to the second side part; one end of the straight line segment is connected with one end of the gathering part, and the other end of the straight line segment is connected with the inclined segment; the inclined section of the first shoulder part and the first side part are intersected to form a first sharp angle, and the inclined section of the second shoulder part and the second side part are intersected to form a second sharp angle; the angles of the first sharp angle and the second sharp angle are the same;
The flat knife part is provided with a front surface and a back surface; the first shoulder is provided with a blade part of the first shoulder on the front surface of the flat cutter part, and the second shoulder is provided with a blade part of the second shoulder on the back surface of the flat cutter part; the front surface of the flat knife part of the first gathering part is provided with a blade part of the first gathering part, and the blade part of the first gathering part forms a first groove towards the inside of the front surface of the flat knife part; the edge part of the second gathering part is arranged on the back surface of the flat knife part, and a second groove is formed in the edge part of the second gathering part towards the back surface of the flat knife part;
The front surface of the flat cutter part is provided with a first chip removal groove; the section of the first chip groove is of an arc-shaped structure, and the extending direction of the first chip groove is of an arc-shaped structure; one end of the first chip groove is communicated with the first groove on the front surface of the flat cutter part, and the other end of the first chip groove extends to the first side part; the reverse side of the flat knife part is provided with a second chip removal groove; the section of the second chip groove is of an arc-shaped structure, and the extending direction of the second chip groove is of an arc-shaped structure; one end of the second chip groove is communicated with a second groove on the reverse side of the flat knife part, and the other end of the second chip groove extends to the second side part.
Further, the angles of the first sharp angle and the second sharp angle are 40 degrees.
Further, the included angle between the first gathering part and the second gathering part is 43 degrees plus or minus 3 degrees.
Further, the groove width of the first groove and the groove width of the first chip removal groove are 3+/-0.5 mm.
Further, the thickness of the flat cutter part is 3mm, and the groove depth of the first chip groove is 1mm; the joint of the first groove and the first chip removal groove is in smooth transition.
Further, a guide block is arranged in the clamping cavity of the end face of the connecting part of the flat cutter part, a guide groove is formed in the cutting part of the flat cutter part, and the clamping cavity and the cutting part can be rapidly clamped through the cooperation of the guide block and the guide groove; the cutting part of the flat knife part is provided with threaded holes at the joint with the connecting part, and positioning screws can be arranged in the threaded holes to position the cutting part and the connecting part.
The utility model has the advantages that:
1) According to the flat drill, the flat cutter part of the flat drill is of a detachable structure, and the cutting part of the flat cutter part can be replaced locally after being worn, so that the flat drill does not need to be scrapped integrally, and resources are saved; in addition, the front and back surfaces of the flat knife part are provided with chip groove structures extending in an arc shape, and the section of each chip groove is also in an arc-shaped structure; according to the design mode, on one hand, the fitting degree of the wood chips with the chip groove is better when the wood chips are discharged in a spiral mode, and the guiding effect of the chip groove is improved; the sawdust roll is not easy to break, so that the sawdust is discharged more smoothly; on the other hand, the chip groove structure in the arc form can avoid clamping stagnation of wood chips, reduce loss of the cutting edge of the flat cutter part and prolong the service life of the cutting edge of the flat drill.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic view of a high-hardness three-point spade drill for woodworking.
Fig. 2 is a partial schematic view of a connecting portion of a high-hardness three-point spade drill construction for woodworking according to the present utility model.
Fig. 3 is a view showing a structure of a cutting part of a high-hardness three-point spade drill construction for woodworking according to the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A carpentry high-hardness three-point spade drill construction as shown in fig. 1 to 3, comprising a shank portion 1, and a spade blade portion 2 formed at a front portion of the shank portion 1; the front part of the flat knife part 2 extends inwards from two side parts to form two shoulders, a first shoulder 31 and a second shoulder 32, the two shoulders continue to fold inwards and upwards to extend to form two gathering parts, a first gathering part 41 and a second gathering part 42 are respectively formed, a peak is formed at the top, and the included angle between the first gathering part 41 and the second gathering part 42 is 43+/-3 degrees; the blade portion 2 has two mutually flat first and second side portions 51 and 52.
In this embodiment, the flat blade portion 2 is of a split structure, the flat blade portion 2 includes a cutting portion 21 and a connecting portion 22, the connecting portion 22 and the handle portion 1 are of an integral structure, and a clamping cavity for accommodating the cutting portion is formed in an end face of the connecting portion 22; one end of the cutting part 21 can be embedded in the clamping cavity of the connecting part 22 and is locked and connected by a screw; a guide block is arranged in the clamping cavity of the end face of the connecting part of the flat cutter part 2, a guide groove is formed in the cutting part of the flat cutter part 2, and the clamping cavity and the cutting part 21 can be rapidly clamped by matching the guide block and the guide groove; screw holes are formed in the joint of the cutting part 21 of the flat cutter part 2 and the connecting part 22, and positioning screws can be arranged in the screw holes to position the cutting part 21 and the connecting part 22.
In this embodiment, the first shoulder 31 and the second shoulder 32 each include a straight line segment and an inclined segment, the straight line segment of the first shoulder 31 is perpendicular to the first side 51, and the straight line segment of the second shoulder 32 is perpendicular to the second side 52; one end of the straight line segment is connected with one end of the gathering part, and the other end of the straight line segment is connected with the inclined segment; the inclined section of the first shoulder 31 intersects the first side 51 to form a first sharp angle 61 and the inclined section of the second shoulder 32 intersects the second side 52 to form a second sharp angle 62; the first sharp angle 61 is at the same angle as the second sharp angle 62; the angles of the first sharp angle 61 and the second sharp angle 62 are both 40 °.
In this embodiment, the flat blade portion 2 has a front surface and a back surface; the first shoulder 31 is provided with a blade part of the first shoulder on the front surface of the flat blade part 2, and the second shoulder 32 is provided with a blade part of the second shoulder on the back surface of the flat blade part 2; the front surface of the flat knife part 2 of the first gathering part 41 is provided with a blade part of the first gathering part, and the blade part of the first gathering part 41 forms a first groove 43 towards the front surface of the flat knife part; the second gathering part 42 is provided with a blade part of the second gathering part on the back surface of the flat knife part 2, and the blade part of the second gathering part forms a second groove towards the back surface of the flat knife part;
In the embodiment, the front surface of the flat cutter part 2 is provided with a first chip removing groove 23; the section of the first chip groove 23 is of an arc-shaped structure, and the extending direction of the first chip groove 23 is of an arc-shaped structure; one end of the first chip groove 23 is communicated with the first groove 43 on the front surface of the flat cutter part 2, and the other end of the first chip groove 23 extends to the first side part 51; the reverse side of the flat knife part 2 is provided with a second chip removal groove; the section of the second chip groove is of an arc-shaped structure, and the extending direction of the second chip groove is of an arc-shaped structure; one end of the second chip groove is communicated with a second groove on the back surface of the flat cutter part 2, and the other end of the second chip groove extends to the second side part 52; the groove width of the first groove 43 and the groove width of the first junk slot 23 are 3 plus or minus 0.5mm; the thickness of the flat cutter part 2 is 3mm, and the groove depth of the first chip groove 23 is 1mm; the junction of the first flute 43 and the first flute 23 is a smooth transition.
The working principle of the utility model is as follows: the flat cutter part of the flat drill is of a detachable structure, so that the cutting part of the flat cutter part can be replaced locally after being worn, the whole scrapping is not needed, and the resources are saved; in addition, the front and back surfaces of the flat knife part are provided with chip groove structures extending in an arc shape, and the section of each chip groove is also in an arc-shaped structure; according to the design mode, on one hand, the fitting degree of the wood chips with the chip groove is better when the wood chips are discharged in a spiral mode, and the guiding effect of the chip groove is improved; the sawdust roll is not easy to break, so that the sawdust is discharged more smoothly; on the other hand, the chip groove structure in the arc form can avoid clamping stagnation of wood chips, reduce loss of the cutting edge of the flat cutter part and prolong the service life of the cutting edge of the flat drill.
It will be appreciated by persons skilled in the art that the utility model is not limited to the embodiments described above
It should be understood that the foregoing embodiments and description are merely illustrative of the principles of this utility model, and that various changes and modifications can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A carpenter uses the flat drill structure of three sharp of high hardness, including shank, and form the flat knife part in the anterior part of the said shank; the front part of the flat knife part extends inwards from two side parts to form two shoulders, a first shoulder and a second shoulder, the two shoulders continue to fold inwards and upwards to extend, two gathering parts are respectively formed, and a sharp top is formed at the top of the first gathering part and the second gathering part; the flat knife part is provided with a first side part and a second side part which are mutually flat; the method is characterized in that:
The flat knife part is of a split structure and comprises a cutting part and a connecting part, the connecting part and the handle part are of an integral structure, and a clamping cavity for accommodating the cutting part is formed in the end face of the connecting part; one end of the cutting part can be embedded into the clamping cavity of the connecting part and is locked and connected through a screw;
The first shoulder and the second shoulder comprise straight line sections and inclined sections, the straight line sections of the first shoulder are perpendicular to the first side part, and the straight line sections of the second shoulder are perpendicular to the second side part; one end of the straight line segment is connected with one end of the gathering part, and the other end of the straight line segment is connected with the inclined segment; the inclined section of the first shoulder part and the first side part are intersected to form a first sharp angle, and the inclined section of the second shoulder part and the second side part are intersected to form a second sharp angle; the angles of the first sharp angle and the second sharp angle are the same;
The flat knife part is provided with a front surface and a back surface; the first shoulder is provided with a blade part of the first shoulder on the front surface of the flat cutter part, and the second shoulder is provided with a blade part of the second shoulder on the back surface of the flat cutter part; the front surface of the flat knife part of the first gathering part is provided with a blade part of the first gathering part, and the blade part of the first gathering part forms a first groove towards the inside of the front surface of the flat knife part; the edge part of the second gathering part is arranged on the back surface of the flat knife part, and a second groove is formed in the edge part of the second gathering part towards the back surface of the flat knife part;
The front surface of the flat cutter part is provided with a first chip removal groove; the section of the first chip groove is of an arc-shaped structure, and the extending direction of the first chip groove is of an arc-shaped structure; one end of the first chip groove is communicated with the first groove on the front surface of the flat cutter part, and the other end of the first chip groove extends to the first side part; the reverse side of the flat knife part is provided with a second chip removal groove; the section of the second chip groove is of an arc-shaped structure, and the extending direction of the second chip groove is of an arc-shaped structure; one end of the second chip groove is communicated with a second groove on the reverse side of the flat knife part, and the other end of the second chip groove extends to the second side part.
2. A carpentry high hardness three point spade drill construction as defined in claim 1, wherein: the angles of the first sharp angle and the second sharp angle are 40 degrees.
3. A carpentry high hardness three point spade drill construction as defined in claim 1, wherein: the included angle between the first gathering part and the second gathering part is 43 degrees+/-3 degrees.
4. A carpentry high hardness three point spade drill construction as defined in claim 1, wherein: the groove width of the first groove and the groove width of the first chip removal groove are 3+/-0.5 mm.
5. A carpentry high hardness three point spade drill construction as defined in claim 1, wherein: the thickness of the flat cutter part is 3mm, and the groove depth of the first chip removal groove is 1mm; the joint of the first groove and the first chip removal groove is in smooth transition.
6. A carpentry high hardness three point spade drill construction as defined in claim 1, wherein: a guide block is arranged in the clamping cavity of the end face of the connecting part of the flat cutter part, a guide groove is formed in the cutting part of the flat cutter part, and the clamping cavity and the cutting part can be rapidly clamped through the cooperation of the guide block and the guide groove; the cutting part of the flat knife part is provided with threaded holes at the joint with the connecting part, and positioning screws can be arranged in the threaded holes to position the cutting part and the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323017848.9U CN220994798U (en) | 2023-11-09 | 2023-11-09 | High-hardness three-point flat drill structure for woodworking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323017848.9U CN220994798U (en) | 2023-11-09 | 2023-11-09 | High-hardness three-point flat drill structure for woodworking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220994798U true CN220994798U (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323017848.9U Active CN220994798U (en) | 2023-11-09 | 2023-11-09 | High-hardness three-point flat drill structure for woodworking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220994798U (en) |
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2023
- 2023-11-09 CN CN202323017848.9U patent/CN220994798U/en active Active
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