CN215672013U - Bundling type drilling device - Google Patents
Bundling type drilling device Download PDFInfo
- Publication number
- CN215672013U CN215672013U CN202120658426.1U CN202120658426U CN215672013U CN 215672013 U CN215672013 U CN 215672013U CN 202120658426 U CN202120658426 U CN 202120658426U CN 215672013 U CN215672013 U CN 215672013U
- Authority
- CN
- China
- Prior art keywords
- drill
- milling cutter
- cluster
- planet
- planet carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a cluster type drilling device, which comprises a variable speed transmission system and a cluster cutter set driven by the variable speed transmission system, wherein the cluster cutter set comprises a central drill for drilling a central hole and a milling cutter arranged on the outer circumference of the central drill, and the milling cutter can revolve around the axis of the central drill and simultaneously rotate to mill the inner wall of the central hole. A hole machining method adopts the cluster drilling machine for machining. The utility model has large holes which can be processed at one time; the motor torque is small when the hole wall is milled; the processing of a spiral groove on the hole wall can be realized; the advantage that the drill bit radiating effect is good.
Description
Technical Field
The utility model relates to a drilling device for a soil layer or a rock layer, in particular to a cluster type drilling device.
Background
The existing mining drilling technology is that a drill bit rotates around the center of a drill hole and pushes along the axial direction of the drill hole, so that circumferential cutting and axial cutting are realized, and the machining of the drill hole is completed. The drilling device mainly comprises two modes, one mode is that the drill rod is driven by power outside a hole, as shown in figure 1, the drill rod 01 rotates under the action of the external power, the drill bit 02 rotates under the drive of the drill rod, and the drill rod 01 drives the drill bit 02 to rotate around the center of the hole to realize drilling and cutting, so that the hole drilling is realized. The other method is to use a hole bottom motor 03 in the hole, as shown in fig. 2, a drill rod 01 does not rotate in the hole, a high-pressure medium is arranged in the drill rod hole, the high-pressure medium acts on the hole bottom motor 03, the hole bottom motor 03 rotates to drive a drill bit 02 to rotate, and drilling of the hole is realized; meanwhile, the drill rod 01 is axially pushed, and drilling construction is completed. The existing cluster drill bit mainly adopts an integrated mode of blades or external integration of multiple power, and has great difficulty in deep hole and directional construction. The main disadvantages are: (1) the single drilling capability is small, when a large-diameter drill hole is machined, multiple chambering can be completed, and the efficiency is low; (2) the torque required by drilling is large; (3) the drill bit continuously cuts, the heat dissipation effect is poor, and the service life is short; (4) the hole type machining is single, and only simple cylindrical holes can be machined.
Therefore, there is a need for a cluster drill and method of using the same to address the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention aims to overcome the defects in the prior art, and provides a cluster drill, which can (1) complete the processing of a large hole at one time; (2) the motor torque is small when the hole wall is milled; (3) the drill bit has good heat dissipation effect; (4) the hole with the spiral groove on the wall can be processed.
The cluster type drilling device comprises a variable speed transmission system and a cluster tool set driven by the variable speed transmission system, wherein the cluster tool set comprises a central drill for drilling a central hole and a milling cutter arranged on the outer circumference of the central drill, and the milling cutter can revolve around the axis of the central drill and simultaneously rotate to mill the inner wall of the central hole.
(1) The central hole is drilled firstly by the central drill, then the hole wall of the central hole is cut by the milling cutter, the central hole can be reamed, the central hole and the reaming are simultaneously carried out, and the large hole can be processed at one time. (2) When the axial feeding speed of the central drill and the milling cutter is low, the cylindrical hole can be machined; when the axial feed speed of the central drill and the milling cutter is higher, the special-shaped hole with the thread groove on the hole wall can be processed, and the special-shaped hole can improve the traditional rock anchoring effect. (3) The utility model can improve the rotating speed of the milling cutter through the variable-speed transmission system, thereby reducing the output speed of the motor and the torque during drilling. (4) When a central hole is machined, the rotating speed of a drilling tool is low, and the generated heat is less; when the hole wall is cut, the milling cutter performs intermittent cutting (the intermittent cutting means that only part of cutter bits are always in contact with the hole wall and cut during the hole wall cutting), the heat dissipation effect of the milling cutter is good, and the service life of the milling cutter can be prolonged.
Further, the variable speed drive system comprises a sun gear, a planet gear and a planet carrier; the sun gear is a fixed gear, and the central drill is in transmission connection with the planet carrier and is driven by the planet carrier to rotate; the milling cutter is arranged on a planet carrier and driven by the planet carrier to revolve around the axis of the central drill and the planet wheel drives to rotate. The milling cutter is driven by the planet wheel, and the milling cutter can revolve around the central drill axis while rotating. Under the condition that the rotating speed of the milling cutter is not changed, the output speed of the motor during drilling can be reduced, and the torque is reduced.
Further, the planet wheel is provided with a first power output shaft, the first power output shaft is arranged on the planet carrier in a rotating fit mode, and the milling cutter is arranged on the first power output shaft in a transmission fit mode.
Furthermore, a speed increasing wheel is arranged between the milling cutter and the planet wheel in a transmission matching mode, and the rotating speed of the milling cutter can be further increased according to requirements under the condition that the input rotating speed of the motor is not changed.
Furthermore, the top end of the center drill is higher than the top end of the milling cutter, the machining radius of the center drill is partially overlapped with that of the milling cutter, and the center drill and the milling cutter are easy to distribute and install.
Furthermore, the side edge of the milling cutter protrudes out of the side edge of the planet carrier, namely, the variable speed transmission system is positioned in the processing area of the milling cutter, so that the planet carrier is prevented from abutting against the processed hole wall when rotating.
Further, a space for accommodating the sun gear and the planet gear is arranged inside the planet carrier.
Further, the planet carrier includes planet wheel seat and connection end cover, planet wheel seat orientation be equipped with support piece on the terminal surface of one side of connection end cover, support piece along the axial with the week side of connecting the end cover links to each other.
Furthermore, the sun gear is provided with a cooling medium channel for cooling the central drill medium in the axial direction, so that the temperature of the central drill during working can be reduced.
Aiming at the problems in the existing drilling, the cluster type drilling device provided by the utility model is adopted to realize the rotation of the milling cutter and complete the revolution around the center of the hole. Under the action of axial thrust of drilling equipment, the milling type drilling of the hole wall is realized, the special-shaped spiral hole drilling tool has the processing characteristics of one-step processing of large hole diameter, high efficiency, long tool service life and special-shaped spiral holes, and can be widely used for underground coal mine and rock pile foundation engineering construction.
The utility model has the beneficial effects that: (1) the large hole can be processed by small torque, and the large hole can be processed at one time; (2) the milling cutter performs intermittent cutting, the heat dissipation effect is good, and the service life is long; (3) the machining of the spiral groove of the hole wall can be finished by adopting a single milling cutter, so that the traditional rock anchoring effect is improved. (4) Because the milling cutter has a small diameter, high-speed cutting can be realized.
Drawings
The utility model is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of an external-bore power-driven drill pipe according to the background art of the present invention;
FIG. 2 is a schematic diagram of a drill bit driven by an in-hole and bottom-hole motor according to the background art of the present invention;
FIG. 3 is a schematic structural view of the cluster drill according to the present invention;
FIG. 4 is a cross-sectional view of the cluster drill of the present invention;
FIG. 5 is a schematic structural diagram of a power device in the cluster drill according to the present invention;
FIG. 6 is a half sectional view of the sun gear in the cluster drill of the present invention;
FIG. 7 is a schematic structural view of a variable speed drive system in the cluster drill of the present invention;
fig. 8 is a schematic view of a profile hole machined by the cluster drill according to the present invention.
In the figure, 1 is a power device, 1-1 is a stator, 1-11 is a first latch, 1-2 is a rotor, 1-3 is a bracket connecting piece,
2 is a variable-speed transmission system which comprises a transmission system,
2-1 is a planet carrier, 2-11 is a star wheel support, 2-12 is a connecting end cover, 2-121 is a guide boss, 2-122 is a cooling channel sealing groove, 2-123 is an assembling hole, 2-13 is a support piece,
2-2 is a sun gear, 2-21 is an input shaft, 2-22 is a guiding counter bore, 2-24 is a second latch, 2-26 is a cooling medium channel,
2-3 is a planet wheel, 2-31 is a first power output shaft, 2-4 is a speed increasing wheel, 2-5 is a driving wheel,
3 is a center drill and 4 is a milling cutter.
Detailed Description
The present invention will be further described with reference to the accompanying fig. 3 through 8 and the embodiments, it is noted that the terms "first", "second", etc. are used for descriptive purposes only and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular manner for convenience in describing and simplifying the description, and therefore should not be construed as limiting, indicating or implying any relative importance to the present invention.
The cluster type drilling device in the embodiment comprises a power device 1, a variable speed transmission system 2 and a cluster cutter set driven by the variable speed transmission system 2. The power device 1 consists of a stator 1-1 and a rotor 1-2 which is sleeved outside the stator 1-1 and is coaxial with the stator 1-1, and the rotor 1-2 is in running fit with the stator 1-1. As shown in fig. 5, the left end of the stator 1-1 is provided with a pressure medium inlet, and the side wall of the stator 1-1 is provided with a pressure medium outlet; the inner wall of the rotor 1-2 is provided with a pressure medium spiral channel communicated with the pressure medium outlet. The cluster tool group comprises a center drill 3 for drilling a center hole and milling cutters 4 arranged on the outer circumference of the center drill 3, wherein the milling cutters 4 can revolve around the axis of the center drill 3 and rotate to mill the inner wall of the center hole. When in use, the milling cutter 4 performs intermittent cutting, thereby having good heat dissipation effect and long service life.
In the present embodiment, the variable speed drive system 2 comprises a sun gear 2-2, a planet gear 2-3 and a planet carrier 2-1; the sun gear 2-2 is a fixed gear, and the central drill 3 is in transmission connection with the planet carrier 2-1 and is driven to rotate by the planet carrier 2-1. The milling cutter 4 is arranged on a planet carrier 2-1, is driven by the planet carrier 2-1 to revolve around the axis of the central drill 3, and is driven by the planet gear 2-3 to rotate. The rotor 1-2 is connected with the planet carrier 2-1 through a bracket connecting piece 1-3. The milling cutter 4 revolves around the axis of the central drill 3 while rotating, and under the condition that the rotation speed of the milling cutter 4 is not changed, the output speed of the motor during drilling can be reduced, so that the torque is reduced.
In this embodiment, the planet wheel 2-3 is provided with a first power output shaft 2-31, the first power output shaft 2-31 is rotatably arranged on the planet carrier 2-1, and the milling cutter 4 is arranged on the first power output shaft 2-31 in a transmission fit manner.
In this embodiment, the speed-increasing wheels 2-4 are also in transmission fit between the milling cutter 4 and the planet wheels 2-3, and the rotating speed of the milling cutter 4 can be further increased according to requirements under the condition that the input rotating speed of the motor is not changed. If one of the speed-increasing wheels 2-4 is arranged, the speed-increasing wheel 2-4 can be arranged on the planet carrier 2-1 through a second power output shaft in a rotating fit mode, and the milling cutter 4 is driven through the second power output shaft. The speed-increasing wheel 2-4 can be directly meshed with the planet wheel 2-3 for transmission; a driving wheel 2-5 can also be arranged on the first power output shaft 2-31, so that the driving wheel 2-5 is meshed with the speed increasing wheel 2-4 for transmission. For example, the speed increasing wheels 2-4 are provided with a plurality of speed increasing wheels and are arranged on the planet carrier 2-1 in a rotating fit mode through a plurality of power output shafts, and the finally output power output shafts drive the milling cutter 4.
In this embodiment, the top end of the center drill 3 is higher than the top end of the milling cutter 4, and the machining radius of the center drill 3 is partially overlapped with the machining radius of the milling cutter 4, so that the center drill 3 and the milling cutter 4 can be easily distributed and mounted. Preferably, the milling cutter 4 has a diameter larger than the diameter of the core drill 3.
In this embodiment, the side edge of the milling cutter 4 protrudes out of the side edge of the planet carrier 2-1, that is, the variable speed transmission system 2 is located in the machining area of the milling cutter 4, so as to prevent the planet carrier 2-1 from abutting against the machined hole wall when rotating.
In this embodiment, the planet carrier 2-1 has a space inside for accommodating the sun gear 2-2 and the planet gears 2-3.
In this embodiment, the planet carrier 2-1 includes a planet wheel 2-3 seat 2-11 and a connection end cover 2-12, a support member 2-13 is provided on an end surface of one side of the planet wheel 2-3 seat 2-11 facing the connection end cover 2-12, and the support member 2-13 is axially abutted against the peripheral side of the connection end cover 2-12. The planet wheel 2-3 seat 2-11 and the support part 2-13 are of an integral structure, and a bolt penetrates through the connecting end cover 2-12 and is in threaded connection with the support part 2-13.
The sun wheel 2-2 and the planet wheels 2-3 are both arranged between the planet wheel 2-3 seat 2-11 and the connecting end cover 2-12. The middle part of the connecting end cover 2-12 is integrally provided with a first guiding boss 2-121, and the first guiding boss 2-121 is positioned at the inner end surface of the connecting end cover 2-12 (the inner end surface of the connecting end cover 2-12 refers to the end surface facing one side of the row constellation). The periphery of the first guide boss 2-121 is provided with a first cooling channel sealing groove 2-122, the center of the outer end face of the connecting end cover 2-12 is provided with an assembly hole 2-123, and the central drill 3 is installed in the assembly hole 2-123.
The sun gear 2-2 is in transmission fit with the input shaft 2-21, preferably, the sun gear 2-2 is positioned at the first end of the input shaft 2-21 and is integrated with the input shaft 2-21; the second end of the input shaft 2-21 is provided with a latch and a second guide boss 2-121 in sequence. One end face of the sun wheel 2-2 facing the connecting end cover 2-12 is provided with a coaxial guiding counter bore 2-22, and the guiding counter bore 2-22 is in rotating fit with the first guiding boss 2-121. As shown in fig. 4, 5 and 6, the second end of the input shaft 2-21 passes through the planet wheel 2-3 seat 2-11, and after the second guide boss 2-121 is inserted into the stator 1-1, the second latch 2-24 is engaged with the first latch 1-11 at the end of the stator 1-1.
In the present embodiment, the sun gear 2-2 is provided with a cooling medium passage 2-26 for passing a medium for cooling the center drill 3 in the axial direction. The assembly holes 2-123 on the connecting end covers 2-12 penetrate through the first guide bosses 2-121, and when the connecting end covers are used, the assembly holes 2-123 are communicated with the cooling medium channels 2-26, so that the cooling medium reduces the temperature of the central drill 3 during working.
A method for processing a hole, using the cluster drill, the processing steps in this embodiment include:
(1) connecting the cluster drilling device to drilling equipment, specifically, connecting a stator with a drill rod;
(2) high-pressure medium is input into the pressure medium spiral channel from the pressure medium inlet of the stator, so that the rotor rotates. The stator and the sun gear are coaxially fixed, namely the sun gear is a fixed wheel, and the rotor drives the planet carrier to rotate. When in use, the planet wheel revolves around the sun wheel while rotating;
(3) the drilling equipment is pushed axially, the central drill firstly contacts with a processing material (such as a rock stratum) and starts to drill a central hole on the processing material; meanwhile, the center drill is cooled by cooling media in the cooling channel.
(4) As the drilling equipment advances, the milling cutter contacts the machining substance and begins to mill the hole wall; at the moment, only part of the cutter head of the milling cutter is contacted with the hole wall and cutting is carried out, namely the milling cutter is in interrupted cutting, so that the heat dissipation effect of the milling cutter during working is ensured.
(5) And (4) continuously advancing the drilling equipment, completing the drilling of the central hole by the central drill, and completing the milling of the hole wall by the milling cutter.
During machining, the drilling parameters are calculated as follows:
1. known parameters include:
sun gear and planet gear drive ratio: i.e. i23；
Transmission ratio of the planetary gear: i.e. i34；
Rotating speed of the planet carrier: n is21；
The rotating speed of the milling cutter is as follows: n is24＝n21*i23*i34；
Axial feed speed of the carrier: f;
with the above known drilling parameters, the relationship between the parameters during drilling is as follows:
2. the calculated drilling parameters of the milling cutter are as follows:
the maximum cutting speed V (i.e., the cutting speed of the hole wall) during drilling is the combination of the rotation speed of the milling connection end cover and the revolution speed around the center of the sun gear: n ═ V21*2π*H+n24*2π*r；
Wherein H is the distance between the axis of the central drill and the axis of the milling cutter, and r is the radius of the milling cutter.
Milling cutter circumference feed speed (feed angle speed): 2 n21；
Milling cutter axial feed speed (axial feed speed of carrier): f (unit: mm/min);
3. the calculated drilling parameters of the center drill are as follows:
central bore rotation (fast carrier speed): n is21；
Axial feed speed of the carrier (i.e. axial feed speed of the milling cutter): f;
center drill hole diameter (center drill diameter).
When the hole is rotated, when the axial feeding speed of the connecting end cover is lower, a cylindrical hole can be machined; when the axial feed speed of the connecting end cover is high, the special-shaped hole with the thread groove on the hole wall can be machined. Therefore, the temperature of the molten metal is controlled,
the scheme also provides a processing method of the special-shaped hole (the hole wall is provided with a thread groove), which comprises the following steps:
(1) connecting the cluster drill to drilling equipment and drilling a base hole (the base hole has a diameter D);
(2) and replacing the cutter with a single cutter head (the single cutter head refers to a cutter only installed with a planetary wheel drive, and a connecting end cover of a center drill is not installed), wherein the radius R' of the single cutter head is R-H (H is the distance between the axis of the center drill and the axis of the cutter, and R is the maximum outer diameter of a special-shaped hole).
(3) Adjusted to the rotating speed n of the planet carrier21Proportional to the axial feed speed f of the planet carrier: n ═ f21*H；
(4) Setting the corresponding number of milling cutters according to the number of the spiral grooves;
(5) finishing the processing of spiral holes in the same rotation direction;
(6) when the cluster drilling device retreats, the reverse spiral groove can be processed, so that the special-shaped hole processing is completed.
Wherein, the unidirectional spiral groove (namely, the spiral groove with only left rotation or right rotation) is processed, if the stator and the drill rod are connected in a thread fit way, the drill rod and the device can be configured to rotate positively and negatively, thereby completing the processing of the unidirectional spiral groove.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A cluster drill, comprising: the milling cutter can revolve around the axis of the central drill and simultaneously rotate and mill the inner wall of the central hole.
2. The cluster drill of claim 1, wherein: the variable speed transmission system comprises a sun gear, a planet gear and a planet carrier; the sun gear is a fixed gear, and the central drill is in transmission connection with the planet carrier and is driven by the planet carrier to rotate; the milling cutter is arranged on a planet carrier and driven by the planet carrier to revolve around the axis of the central drill and the planet wheel drives to rotate.
3. The cluster drill of claim 2, wherein: the planet wheel is equipped with first power output shaft, first power output shaft normal running fit sets up in the planet carrier, milling cutter transmission cooperation set up in first power output shaft.
4. The cluster drill of claim 3, wherein: and a speed-increasing wheel is also in transmission fit between the milling cutter and the planet wheel.
5. The cluster drill of claim 1, wherein: the drill bit of the center drill protrudes out of the processing surface of the milling cutter, and the processing radius of the center drill is partially overlapped with the processing radius of the milling cutter.
6. The cluster drill of claim 1, wherein: the side edge of the milling cutter protrudes out of the side edge of the planet carrier.
7. The cluster drill of claim 2, wherein: the planet carrier is internally provided with a space for accommodating the sun wheel and the planet wheels.
8. The cluster drill of claim 7, wherein: the planet carrier includes planet wheel seat and connection end cover, planet wheel seat orientation be equipped with support piece on the terminal surface of one side of connection end cover, support piece along the axial with the week side of connecting the end cover links to each other.
9. The cluster drill of claim 2, wherein: and the sun wheel is provided with a cooling medium channel for cooling the medium passing through the central drill along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120658426.1U CN215672013U (en) | 2021-03-31 | 2021-03-31 | Bundling type drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120658426.1U CN215672013U (en) | 2021-03-31 | 2021-03-31 | Bundling type drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672013U true CN215672013U (en) | 2022-01-28 |
Family
ID=79969876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120658426.1U Active CN215672013U (en) | 2021-03-31 | 2021-03-31 | Bundling type drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027332A (en) * | 2021-03-31 | 2021-06-25 | 中煤科工集团重庆研究院有限公司 | Cluster type drilling device and hole machining method |
-
2021
- 2021-03-31 CN CN202120658426.1U patent/CN215672013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027332A (en) * | 2021-03-31 | 2021-06-25 | 中煤科工集团重庆研究院有限公司 | Cluster type drilling device and hole machining method |
| CN113027332B (en) * | 2021-03-31 | 2024-03-29 | 中煤科工集团重庆研究院有限公司 | Cluster type drilling device and hole processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215672013U (en) | Bundling type drilling device | |
| CN107023304B (en) | Lip river triangle cutterhead topping machanism is strangled in eccentric rotating disk driving | |
| CN113027332B (en) | Cluster type drilling device and hole processing method | |
| CN106150492A (en) | Cutting mechanism for heading machine with double cutterheads | |
| CN203380396U (en) | Vibration drilling device | |
| CN114412462B (en) | Cutter head suitable for hard rock mining and hard rock mining method | |
| CN108194093A (en) | A kind of multi-knife-head tricone bit push-bench cutterhead | |
| CN110439466B (en) | Two-stage power reaming drilling tool | |
| CN101036950B (en) | Gun drill | |
| CN201082477Y (en) | Pistol drill | |
| CN211397468U (en) | Rotary power head for cooling drill bit wall | |
| CN210827443U (en) | Planetary positive and negative drill bit | |
| CN207554054U (en) | A kind of shield machine rotary slag discharge device | |
| CN103357937B (en) | There is the milling cutter of multiple milling unit | |
| CN213645878U (en) | Drilling main shaft suitable for various apertures | |
| CN110159293B (en) | Drilling and milling type cutting experiment mechanism of heading machine | |
| CN212690036U (en) | Super large diameter main shaft transmission type mud water balance push bench | |
| CN210622708U (en) | Two-stage power hole expanding drilling tool | |
| CN114909148A (en) | Circular cutting drilling tool | |
| CN112832798A (en) | Block-controlled cutter head of push bench | |
| CN208010888U (en) | A kind of hollow rotating drill rod mechanism of sliding-vane motor driving planetary gear speed-reduction combination | |
| CN113738299A (en) | Downhole pipe column cutting tool | |
| WO2001011179A1 (en) | A drilling device | |
| CN218488783U (en) | Cutting device is used in processing of glass inside lining oil pipe | |
| CN111622772A (en) | Tunneller for tunnel full-face construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |