CN212443384U - Planetary gear rotating shaft square hole drill bit - Google Patents
Planetary gear rotating shaft square hole drill bit Download PDFInfo
- Publication number
- CN212443384U CN212443384U CN202021005885.1U CN202021005885U CN212443384U CN 212443384 U CN212443384 U CN 212443384U CN 202021005885 U CN202021005885 U CN 202021005885U CN 212443384 U CN212443384 U CN 212443384U
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- drill bit
- square hole
- rotating shaft
- drill
- planet wheel
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- 238000005553 drilling Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 229920000433 Lyocell Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
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Abstract
The utility model provides a planet wheel pivot square hole drill bit belongs to drill bit design technical field. The drill bit comprises a rotating shaft, a drill rod, a pinion, a center wheel and a drill bit, wherein the rotating shaft is connected with the drill rod through the pinion, the drill bit is connected below the drill rod, and the pinion is meshed with the center wheel. This drill bit utilizes planet wheel mechanism to improve the transmission of current square hole drill bit, makes the drill bit at the rotation during operation, and transmission has faster speed, higher efficiency and better stability, and when the pivot was at the uniform velocity rotatory, the triangle-shaped cross-section drilling rod of the lai luo can occupy a square area, for raising the efficiency during the use, at the position that the work piece need process the square hole with ordinary twist drill the round hole that the diameter is less than the square hole length of side, the reuse square hole drill bit drills out the square hole. The utility model relates to a rationally, maneuverability is strong, can raise the efficiency, and save time satisfies the technological requirement.
Description
Technical Field
The utility model relates to a drill bit design technical field especially indicates a planet wheel pivot square hole drill bit.
Background
The Lelo triangle is called as a circular triangle, and is first discovered by a mechanist and a mathematician, so the name is got. The lelobromic shape with width a is a circular triangle Δ ABC made with the side length a of the regular triangle, and has the same width as the circle with diameter a. When it is put in a square with a side length of a to rotate, each side of the square has only one common point, and the connecting lines of the common points of the two sides are mutually vertical. Because the Lelo triangle rotates in a square with the side length equal to the width of the triangle, four points contact with the four sides of the square at any time and the positions of the contact points are changed continuously, a mechanist Lelo designs the inspiration of a square hole drill, and the mechanist is prompted to create the square hole drill.
At present, there is not the drill bit that can directly drill out the square hole on the market, need adopt multiple processing mode just can process if need process the square hole, the utility model discloses can directly drill out the square hole, convenient and fast.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a planet wheel pivot square hole drill bit combines planet wheel movement track design, utilizes planet wheel mechanism to improve the transmission of current square hole drill bit, makes the drill bit at the rotation during operation, and drive mechanism has faster speed, higher efficiency and better stability.
The drill bit comprises a rotating shaft, a pinion, a center wheel, a drill bit and a drill rod, wherein the rotating shaft is connected with the drill rod through the pinion, the drill bit is connected below the drill rod, and the pinion is meshed with the center wheel.
The rotating shaft is a planet wheel rotating shaft which penetrates through the center of the pinion and is vertically connected with the pinion.
When the drill bit is used, a common twist drill is used for drilling a round hole with the diameter smaller than the side length of the square hole, and then the drill bit is used for drilling the square hole.
The drill rod revolution angular velocity omega exists in the central motion track of the drill rod in the motion process of the drill rod2Equal to three times of rotational angular velocity omega1The kinematic relationship of (1). If the circle is used to replace the movement track of the center of the drill rod, the movement relationship can adopt a pair of componentsThe circle diameter ratio is 4: 3, inner gearing cylindrical spur gear.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
among the above-mentioned scheme, planet wheel drilling rod pivot makes the drilling rod move fast, steady, high-efficient and improve ultimate strength in drilling course of working, compare with current crosshead shoe mechanism and overcome the rotational speed slow, vibrations are big, the shortcoming at the bottom of the inefficiency, the load, the square hole drill bit of design is based on ordinary drilling machine size, can install on ordinary drilling machine platform, can make the user need not purchase power equipment in addition, can alleviate constructor's intensity of labour, accelerate construction speed, reduce construction cost.
Drawings
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic diagram of a Lelo triangle of the drill bit of the present invention;
FIG. 3 is a movement trace diagram of the center of the drill spindle according to the present invention;
FIG. 4 is a schematic transmission diagram of the central track control part of the drill rod of the utility model;
FIG. 5 is a three-dimensional modeling diagram of the drill of the present invention;
fig. 6 is a diagram of the edge of the drill of the present invention.
Wherein: 1-rotating shaft, 2-pinion, 3-center wheel, 4-drill bit and 5-drill rod.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides a planet wheel pivot square hole drill bit.
As shown in fig. 1 and 4, the drill comprises a rotating shaft 1, a pinion 2, a center wheel 3, a drill 4 and a drill rod 5, wherein the rotating shaft 1 is connected with the drill rod 5 through the pinion 2, the drill 4 is connected below the drill rod 5, and the pinion 2 is meshed with the center wheel 3.
The rotating shaft 1 is a planet wheel rotating shaft which penetrates through the center of the pinion 2 and is vertically connected with the pinion 2.
When the drill bit is used, a common twist drill is used for drilling a round hole with the diameter smaller than the side length of the square hole, and then the drill bit is used for drilling the square hole.
The specific design scheme of the drill bit is as follows:
referring to fig. 2, a rectangular coordinate system xOy is made with the initial position of the center of the lelo triangle as the origin O.
Wherein theta represents the rotated angle of the Lelo triangle, omega represents the rotational angular velocity, r represents the side length of the Lelo triangle, x and y represent the coordinate of the central locus of the Lelo triangle, and a is the side length of the Lelo triangle.
Let the Lailou triangle be omega1Clockwise rotation at a constant speed around the symmetrical center (origin o) of the rotor, starting: theta0＝60°。
After t time of rotation, the rotated angle theta is equal to theta0+ω1t
The square movement characteristics are as follows: horizontal direction: δ x ═ OB-OB · cos ω t
＝r(1-cosωt)
The vertical direction is as follows: δ y equal to OA · sin60-OA · sin (60+ ω t)
＝r[sin60-sin(60+ωt)]
Wherein δ X is the displacement of the center of the lyocell triangle in the X direction, δ Y is the displacement of the center of the lyocell triangle in the Y direction, OB is the distance from the center of the lyocell triangle to the corner, and OA is the distance from the center of the lyocell triangle to the corner;
consider a square as a stationary, uniformly rotating reuleaux triangle at an angular velocity of omega. Then the central locus of the Lelo triangle is
Converting the parameter equation into a track equation:
based on the above formula reasoning, as shown in fig. 3, the motion trajectory of the center of the rotation axis of the drill is similar to a circle, and the motion trajectory is obtained according to the respective corresponding intervals of the motion trajectory equation of the center of the rotation axis, where the corresponding intervals are:
it can be seen from fig. 3 that instead of an actual trajectory of the drill rod center, an ideal circle may be used. Considering that the drill rod rotates and simultaneously has the revolution around the center of the corresponding square with the same width, the trial-adoption planetary gear mechanism realizes the movement.
The drill rod revolution angular velocity omega exists in the central track of the drill rod in the movement process of the drill rod2Equal to three times of rotational angular velocity omega1The kinematic relationship of (1). If a circle is used to replace the movement track of the center of the drill rod, the movement relation can adopt a pair of reference circle diameter ratios of 4: 3, and the transmission diagram is shown in figure 4.
In the actual design process, the planet wheel rotating shaft penetrates through the center of the pinion and is vertically connected with the pinion; the pinion is positioned in the center of the central wheel and rotates together with the planet wheel rotating shaft; the center wheel plays a role in connecting and supporting in the whole drill bit, and the lower end of the center wheel is connected with the drill bit; the drill bit is connected at the lowermost end, under the drive of planet wheel pivot, drills out the square hole.
When the planet carrier (rotating shaft) rotates at a constant speed, the Lelo triangular section drill rod occupies a square surface area. Four sides of the circular arc have certain circular angles, coordinates of all points of the circular arc are derived by utilizing an Adams data derivation function, and a circular arc curve is drawn as shown in figure 6.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a planet wheel pivot square hole drill bit which characterized in that: the drilling machine comprises a rotating shaft (1), a pinion (2), a center wheel (3), a drill bit (4) and a drill rod (5), wherein the rotating shaft (1) is connected with the drill rod (5) through the pinion (2), the drill bit (4) is connected below the drill rod (5), and the pinion (2) is meshed with the center wheel (3).
2. The planet wheel rotating shaft square hole drill bit of claim 1, characterized in that: the rotating shaft (1) is a planet wheel rotating shaft, and the planet wheel rotating shaft penetrates through the center of the small gear (2) and is vertically connected with the small gear (2).
3. The planet wheel rotating shaft square hole drill bit of claim 1, characterized in that: when the drill bit is used, a common twist drill is used for drilling a round hole with the diameter smaller than the side length of the square hole, and then the drill bit is used for drilling the square hole.
4. The planet wheel rotating shaft square hole drill bit of claim 1, characterized in that: in the movement process of the drill rod (5), the drill rod revolution angular velocity omega exists in the movement track of the center of the drill rod (5)2Equal to three times of rotational angular velocity omega1The kinematic relationship of (1).
5. The planet wheel rotating shaft square hole drill bit of claim 4, characterized in that: when the central movement track of the drill rod (5) is replaced by a circle, the movement relation adopts a pair of reference circle diameter ratios of 4: 3, inner gearing cylindrical spur gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021005885.1U CN212443384U (en) | 2020-06-04 | 2020-06-04 | Planetary gear rotating shaft square hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021005885.1U CN212443384U (en) | 2020-06-04 | 2020-06-04 | Planetary gear rotating shaft square hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212443384U true CN212443384U (en) | 2021-02-02 |
Family
ID=74478760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021005885.1U Expired - Fee Related CN212443384U (en) | 2020-06-04 | 2020-06-04 | Planetary gear rotating shaft square hole drill bit |
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| Country | Link |
|---|---|
| CN (1) | CN212443384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673148A (en) * | 2020-06-04 | 2020-09-18 | 北京科技大学 | Planetary gear rotating shaft square hole drill bit |
-
2020
- 2020-06-04 CN CN202021005885.1U patent/CN212443384U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673148A (en) * | 2020-06-04 | 2020-09-18 | 北京科技大学 | Planetary gear rotating shaft square hole drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |