CN112917606A - Log drilling method - Google Patents
Log drilling method Download PDFInfo
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- CN112917606A CN112917606A CN202110095087.5A CN202110095087A CN112917606A CN 112917606 A CN112917606 A CN 112917606A CN 202110095087 A CN202110095087 A CN 202110095087A CN 112917606 A CN112917606 A CN 112917606A
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- log
- drill bit
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- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C3/00—Drilling machines or drilling devices; Equipment therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C3/00—Drilling machines or drilling devices; Equipment therefor
- B27C3/02—Stationary drilling machines with a single working spindle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
Abstract
The invention relates to a log drilling method, which belongs to the technical field of wood processing technology, wherein in the drilling process, logs rotate around the central line of a drilled hole; the drill bit travels along the length direction of the drilling center line, the drill bit rotates in the traveling process, and the drilling center line of the log is superposed with the geometric center line of the log; or the distance between the centerline of the log's borehole and the log's geometric centerline is greater than 0. In the log drilling process, the drill bit always moves in the central line of the drilled hole, and the drill bit is not easy to deviate; once the drill bit deflects, the drill bit can be actively adjusted at any time, so that the drilling accuracy of the drill bit and the strength of the drilled log are ensured.
Description
Technical Field
The invention relates to a log drilling method, and belongs to the technical field of wood processing technologies.
Background
In a wood structure building, a plurality of log supporting columns are arranged, the log has higher water content, the water content of untreated log is generally 60-90%, the water content is different according to different factors such as wood species and production places, the undried wood cannot be directly used as the supporting columns due to low strength and low corrosion resistance, and the log needs to be dried. The log has a large amount of water, during the drying process of the log, the water on the outer surface of the log is firstly released and shrinks inwards, the water content of the central part of the log is higher, so that the shrinkage of the wood materials on the surface and the inside of the log is inconsistent, the central part of the log generates larger tension outwards and peripherally, the tension prevents the wood on the outer surface from shrinking inwards, finally, cracks towards the central line appear on the circumferential surface of the log, the higher the possibility of cracks appearing is, the larger the diameter of the log is, therefore, the log cannot be dried by heating, and the drying method usually adopted is natural air drying. However, even if natural drying is used, the phenomenon of log splitting cannot be completely avoided, and in the actual natural drying process of log, the log is quite often split, and besides the splitting of the log can form cracks on the outer surface of the log, the appearance is affected, and cracks are also formed in the log, so that the strength of the log is reduced. In order to reduce the influence of log splitting on the subsequent application of logs, the chinese patent application with publication number CN103009447A discloses a log cracking prevention method, in which a cylindrical decompression through hole is drilled on the axial center line of logs, water is released simultaneously through the decompression through hole and the outer surface of logs, the inside and outside shrinkage is consistent, and cracks are not easy to generate. Chinese patent No. CN107283574B discloses a method and apparatus for drying logs, which comprises processing at least one through hole along the length direction of the log at the central line of the cross section of the log with bark removed, heating the log in the through hole by a heating rod until the real-time moisture content of the log reaches the desired moisture content, and the log is not cracked, thereby realizing the heating and drying of the log.
The process of drilling holes in the log and drying the log reduces the occurrence of cracks in the log during the drying process, and solves the problem of log drying. Thus, the logs need to be drilled in the middle of the log before drying, typically by holding the log stationary and aligning the centre line to be drilled with a drill bit, which is then rotated and fed towards the interior of the log. In the actual drilling process, the drilling mode is found to be not suitable for logs, because the length of the logs is very long, the length of the drill bit needs to be very long to drill the logs thoroughly, when the length of the drill bit is long, the drill bit is easy to deflect due to the rotation of the drill bit and the gravity action of the drill bit, and because the growth difference of the logs causes the central line of the logs to be incorrect and the wood grain textures of the logs to be different, the density difference is caused, so that the drill bit is easy to deflect in the drilling process of the drill bit to cause the change of the rotation central line, once the deflection of the drill bit occurs, the situation that the machining central line is more and more deflected can occur, the drill bit can be blocked and can not continue to drill or even can be cut off, and even if the drilling can be carried out reluctantly, because the central line of the through hole is deflected, the strength influence, it cannot be used. Therefore, a drilling method capable of processing the log through hole is needed, which can ensure that the central line of the drilled hole is not deviated in the drilling process and avoid the situation that the drill bit is stuck or broken.
Disclosure of Invention
The invention provides a log drilling method, aiming at the problems that the existing log drilling process cannot ensure that a drill bit does not deflect to cause the drill bit to be stuck and broken, and the processed log through hole central line deviates to cause the log strength to be reduced and cannot be used, and the invention ensures that the drill bit does not deflect and the log through hole central line does not deviate.
The technical scheme for solving the technical problems is as follows:
a log drilling method, in the drilling process, a log rotates around a drilling center line; the drill bit travels in the direction of the borehole centerline.
The invention has the beneficial effects that:
firstly, the invention realizes the log drilling by adopting the mode that the log rotates around the central line of the drilled hole and the drill bit advances in the central line of the drilled hole of the log, the drill bit always advances in the central line of the drilled hole, and the drill bit is not easy to deviate;
secondly, even if the drill bit is deflected due to the density difference of the logs or the dead weight of the drill bit, the drill bit can be actively adjusted back at any time once the drill bit is deflected due to the continuous rotation of the logs, so that the drilling accuracy of the drill bit is ensured;
the log drilling precision is high, the drill bit has no deviation, the influence of the drill bit deviation on the log strength and quality is reduced, the log after drilling is high in strength and good in quality, and the drilling processing defective rate is low.
On the basis of the technical scheme, the invention can also make the following improvements on the technical scheme:
further, the drill bit rotates during travel.
The drill bit has the advantages that the drill bit rotates in the process of being matched with the rotation of the log, so that the drilling speed can be increased, the drilling efficiency can be improved, and the active adjustment of the feeding center line of the drill bit is facilitated.
Further, the method comprises the following steps:
clamping the roughly processed log on a rotary support to ensure that the rotary center line of the rotary support is superposed with the drilling center line of the log;
step two, the drill bit is aligned with the central line of the log at the end of the log;
rotating the rotary bracket to drive the log to rotate; the drill bit travels at the centerline of the log bore until a through hole is drilled.
Adopt above-mentioned further technical scheme's beneficial effect is, the log is by the rotating support centre gripping and drive the log and rotate, and the rotating support's rotation center line and the coincidence of the drilling center line of log have guaranteed the stability of log rotation center line, and the drill bit also aligns with the drilling center line of log more easily moreover, and the calibration is simple.
Further, the central line of the log bore hole coincides with the geometric central line of the log.
The technical scheme has the advantages that the central line of the drilled hole of the log is coincident with the geometric central line of the log, and the central line of the processed log through hole is coincident with the geometric central line of the log, so that the processing method is suitable for the condition that the through hole needs to be processed on the geometric central line of the log.
Further, the distance between the central line of the log's borehole and the log's geometric central line is D, D being greater than 0 and smaller than the log's radius.
The further technical scheme has the advantages that the distance between the central line of the log drill hole and the central line of the log is larger than 0, namely the central line of the log drill hole is not coincident with the central line of the log drill hole, so that the central line of the processed log through hole is not coincident with the central line of the log drill hole, the through hole can be processed at a position outside the central line of the log, and a plurality of through holes can also be processed.
Further, the advancing speed of the drill bit is 10-500 cm/min.
Further, the rotating speed of the logs is 30-500 r/min.
Further, the rotating speed of the drill bit is 0-600 r/min.
Further, the rotary support comprises a driving rotary support and a driven rotary support, and the driving rotary support is arranged at the end of the log far away from the drill bit.
Drawings
Figure 1 is a cross-sectional view of a log of example 1 of the present invention mounted on a rotating support;
figure 2 is a cross-sectional view of a log of example 1 of the present invention after completion of log drilling;
figure 3 is an external view of a log of example 1 of the present invention mounted on a rotating support;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
figure 5 is a cross-sectional view of a log of example 2 of the present invention mounted on a rotating support;
figure 6 is a cross-sectional view of a log of example 2 of the present invention after completion of log drilling;
figure 7 is an external view of a log of example 2 of the present invention mounted on a rotating support;
fig. 8 is a sectional view taken along line B-B of fig. 7.
The reference numbers are recorded as follows: 1. 1-1 parts of log, a through hole, 2 parts of a driving rotary support, 3 parts of a driven rotary support, 4 parts of a rotary machine head, 5 parts of a drill machine head, 6 parts of a drill.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
A log drilling method, in the drilling process, a log rotates around a drilling center line; the drill bit travels in the direction of the borehole centerline. The drill bit rotates or does not rotate in the advancing process; the drill bit does not rotate in the advancing process, so that the energy consumption can be reduced, and the deflection of the drill bit caused by rotation is avoided; the drill bit rotates in the process of being carried out, and the rotation of the log is matched, so that the drilling speed can be increased, the drilling efficiency can be improved, and the active adjustment of the feed center line of the drill bit can be more convenient. The central line of the drilled hole of the log is superposed with the geometric central line of the log; or the distance D between the central line of the log hole and the geometric central line of the log is larger than 0 and smaller than the radius of the log; the geometric center line of the log means the center line of the log itself after the rough processing. The advancing speed of the drill bit is 10-500 cm/min. The rotating speed of the log is 30-500 r/min. The rotating speed of the drill bit is 0-600 r/min.
Example 1
A log drilling method, as shown in figure 1-4, the rough-machined log 1 is clamped on a rotary bracket, the rotary bracket comprises a driving rotary bracket 2 and a driven rotary bracket 3, the rotation center lines of the driving rotary bracket 2 and the driven rotary bracket 3 are on the same straight line, the driving rotary bracket 2 is connected with a rotary machine head 4 and is installed through a bracket bearing (not shown), the driven rotary bracket 3 is installed through a bracket bearing (not shown), a plurality of driven rotary brackets 3 can be arranged according to the length requirement of the log 1, two ends of the log 1 are respectively installed on the driving rotary bracket 2 and the driven rotary bracket 3, and the rotation center line of the rotary bracket is ensured to be coincident with the drilling center line of the log 1 and the geometric center line of the log 1;
the end part of the drill bit 6, which is far away from the rotary machine head 4, of the log 1 is aligned with the log 1, the drill bit 6 is arranged on the drill bit machine head 5, and the rotating shaft center of the drill bit 6 is aligned with the drilling center line of the log 1;
the rotary machine head 4 rotates to drive the driving rotary bracket 2 to rotate, so as to drive the log 1 to rotate, and the driven rotary bracket 3 is driven; the drill bit 6 travels along the centerline of the log 1, and the drill bit 6 may be left alone or rotated as necessary for processing efficiency until the drill bit 6 drills through the through hole 1-1.
Example 2
A log boring method, as shown in figures 5-8, which differs from example 1 in that the boring centerline of the log 1 is not collinear with the log's geometric centerline; when the diameter of log is great, if only bore on the geometric centre line of log and carry out the drying, probably can not be fine improvement drying speed and effect, consequently, can be through the mode of this embodiment, bore a plurality of holes on the log and carry out the drying, improve the drying efficiency of log.
The rest is the same as embodiment 1 and is not described again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method for drilling a hole in a log, characterized in that during drilling the log is rotated around the drilling centre line and the drill bit is advanced in the direction of the drilling centre line.
2. A method of boring a log as in claim 1 wherein the drill bit rotates during travel.
3. A log hole drilling method as claimed in claim 1 or 2, comprising the steps of:
clamping the roughly processed log on a rotary support to ensure that the rotary center line of the rotary support is superposed with the drilling center line of the log;
step two, the drill bit is aligned with the central line of the log at the end of the log;
rotating the rotary bracket to drive the log to rotate; the drill bit travels at the centerline of the log bore until a through hole is drilled.
4. A log splitting method according to claim 3, wherein the split centreline of the log and the log's geometric centreline coincide.
5. A log splitting method according to claim 3, wherein the distance between the split centerline of the log and the geometric centerline of the log is D, D being greater than 0 and smaller than the radius of the log.
6. A log boring method as claimed in claim 3, wherein the travelling speed of the boring head is 10-500 cm/min.
7. A log hole drilling method according to claim 3, wherein the log is rotated at a speed of 30-500 r/min.
8. A log hole drilling method as claimed in claim 3, wherein the drill bit is rotated at a speed of 0-600 r/min.
9. The log hole drilling method of claim 3, wherein the rotary supports comprise a driving rotary support and a driven rotary support, the driving rotary support being disposed at the end of the log remote from the drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095087.5A CN112917606A (en) | 2021-01-25 | 2021-01-25 | Log drilling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095087.5A CN112917606A (en) | 2021-01-25 | 2021-01-25 | Log drilling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112917606A true CN112917606A (en) | 2021-06-08 |
Family
ID=76166852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110095087.5A Pending CN112917606A (en) | 2021-01-25 | 2021-01-25 | Log drilling method |
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| CN (1) | CN112917606A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635405A (en) * | 2021-09-02 | 2021-11-12 | 福建省华东建设机械有限公司 | Horizontal wood turning device for log rotary processing |
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| CN102189577A (en) * | 2011-03-28 | 2011-09-21 | 南京林业大学 | Method for removing inner segments and tabasheer of integral bamboo tube |
| CN103009447A (en) * | 2012-12-06 | 2013-04-03 | 嘉善县魏塘镇永兴工艺品厂 | Log cracking prevention method |
| CN104209819A (en) * | 2013-05-31 | 2014-12-17 | 成都浪度家私有限公司 | Log cutting tool |
| CN104626280A (en) * | 2014-12-17 | 2015-05-20 | 陈红 | Drilling machine tool for round timber tip |
| CN205343331U (en) * | 2015-11-09 | 2016-06-29 | 唐山市燕南制锹有限公司 | Perch automatic drilling machine |
| CN107175726A (en) * | 2017-07-20 | 2017-09-19 | 无锡红中红木业有限公司 | Round log puncher |
| CN107234677A (en) * | 2017-06-12 | 2017-10-10 | 无锡市宏泰机械有限公司 | A kind of boojum tree deep hole rig |
| CN108501121A (en) * | 2018-06-25 | 2018-09-07 | 东阳市尚德电器机械有限公司 | A kind of overlength depth wood boring machine and its implementation |
| CN209599404U (en) * | 2019-02-02 | 2019-11-08 | 江西文青园林古建工程有限公司 | Perforating device is used in a kind of processing of timber |
| CN210414841U (en) * | 2019-04-10 | 2020-04-28 | 邱崇林 | Log puncher |
| CN111483018A (en) * | 2020-04-24 | 2020-08-04 | 宋文智 | Punching machine for suction pipe |
| CN111633848A (en) * | 2020-06-29 | 2020-09-08 | 天津大学 | Electric rotating clamp for rock cutting machine |
| CN211590475U (en) * | 2020-01-14 | 2020-09-29 | 邵武市意创机械有限公司 | Bamboo stick drilling equipment |
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2021
- 2021-01-25 CN CN202110095087.5A patent/CN112917606A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189577A (en) * | 2011-03-28 | 2011-09-21 | 南京林业大学 | Method for removing inner segments and tabasheer of integral bamboo tube |
| CN103009447A (en) * | 2012-12-06 | 2013-04-03 | 嘉善县魏塘镇永兴工艺品厂 | Log cracking prevention method |
| CN104209819A (en) * | 2013-05-31 | 2014-12-17 | 成都浪度家私有限公司 | Log cutting tool |
| CN104626280A (en) * | 2014-12-17 | 2015-05-20 | 陈红 | Drilling machine tool for round timber tip |
| CN205343331U (en) * | 2015-11-09 | 2016-06-29 | 唐山市燕南制锹有限公司 | Perch automatic drilling machine |
| CN107234677A (en) * | 2017-06-12 | 2017-10-10 | 无锡市宏泰机械有限公司 | A kind of boojum tree deep hole rig |
| CN107175726A (en) * | 2017-07-20 | 2017-09-19 | 无锡红中红木业有限公司 | Round log puncher |
| CN108501121A (en) * | 2018-06-25 | 2018-09-07 | 东阳市尚德电器机械有限公司 | A kind of overlength depth wood boring machine and its implementation |
| CN209599404U (en) * | 2019-02-02 | 2019-11-08 | 江西文青园林古建工程有限公司 | Perforating device is used in a kind of processing of timber |
| CN210414841U (en) * | 2019-04-10 | 2020-04-28 | 邱崇林 | Log puncher |
| CN211590475U (en) * | 2020-01-14 | 2020-09-29 | 邵武市意创机械有限公司 | Bamboo stick drilling equipment |
| CN111483018A (en) * | 2020-04-24 | 2020-08-04 | 宋文智 | Punching machine for suction pipe |
| CN111633848A (en) * | 2020-06-29 | 2020-09-08 | 天津大学 | Electric rotating clamp for rock cutting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635405A (en) * | 2021-09-02 | 2021-11-12 | 福建省华东建设机械有限公司 | Horizontal wood turning device for log rotary processing |
| CN113635405B (en) * | 2021-09-02 | 2022-07-26 | 福建省华东建设机械有限公司 | Horizontal wood turning device for log rotary processing |
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Application publication date: 20210608 |