CN110170904B - Method for processing thickness of through hole of shell - Google Patents
Method for processing thickness of through hole of shell Download PDFInfo
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- CN110170904B CN110170904B CN201910460185.7A CN201910460185A CN110170904B CN 110170904 B CN110170904 B CN 110170904B CN 201910460185 A CN201910460185 A CN 201910460185A CN 110170904 B CN110170904 B CN 110170904B
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- hole
- grinding
- shell
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- thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0015—Hanging grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention discloses a processing method for the thickness of a through hole of a shell, a rotating grinding cutter is contacted with a ring surface to be processed of the through hole through a grinding layer, a current detection device detects that the current of a grinding motor generates sudden change, further, the grinding reference surface of the ring surface to be processed can be detected, the impact force on the shell is reduced by the grinding force of the grinding layer, the deformation of the step of the through hole is avoided, when the shell made of the composite material is processed, the difficulty of light weight and elasticity of the shell can be overcome, and the shell does not need to be clamped again, then directly grind through the grinding layer treat the processing anchor ring to obtain the grinding volume, combine the processing reference surface that base plane scanning device scanned data fit out the through-hole and obtain the thickness of casing through-hole, need not be with the help of under other detecting instrument, can process out the through-hole of setting for thickness fast, effectively improve casing through-hole machining efficiency. The invention is used for processing the through hole of the shell.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a method for machining the thickness of a through hole of a shell.
Background
The prior shell is made of a composite material, the bottom surface of the shell is uneven or inclined in the shell forming process, so that after the shell is drilled, the step surface of the rear wall of a through hole of the through hole needs to be machined, the shell is clamped on a numerical control milling machine to be respectively subjected to hole cutting and plane milling, in the prior art, in order to ensure the position precision, the two processes of hole cutting and plane milling can be completed by clamping the shell once, in the process of machining the step surface of the rear wall of the through hole, the through hole with the set thickness and the flat step surface are machined according to the installation requirement, in the prior art, a distance detection instrument is adopted to measure the position of the lower step surface of the through hole, and then the machining reference of the upper step surface of the through hole is adopted to obtain the initial thickness, the machining steps are complicated, the machining efficiency is low, and the shell made of the composite material is light in weight, The step of the through hole is easy to deform in the process of detecting the thickness from the detection instrument, so that a processed hole generates certain errors, and the assembly of subsequent parts is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the processing method for the thickness of the through hole of the shell can rapidly process the through hole with set thickness without other detecting instruments, effectively improves the processing efficiency of the through hole of the shell, can overcome the difficulty that the shell is light in weight and elastic when the shell made of composite materials is processed, and reduces the processing error of the through hole.
The solution of the invention for solving the technical problem is as follows:
the utility model provides a processing method to casing through-hole thickness, includes processing platform, base face scanning device, grinding cutter, grinding motor, fixed mounting in the processing bench the casing is last to be equipped with the through-hole of seting up through the trompil process, and this grinding cutter includes pivot, mill, and pivot and mill are coaxial setting, pivot and mill fixed connection, the mill be close to and be equipped with the grinding layer on the terminal surface of pivot, grinding motor is connected with the pivot transmission, grinding motor is connected with current detection device, the processing method to casing through-hole thickness include following step:
a) the base surface scanning device scans the through hole, and fits a front wall step surface of the through hole and the circle center of the through hole according to the scanning data of the base surface scanning device;
b) taking the front wall step surface of the through hole as a processing reference surface, and enabling the axis of the rotating shaft of the grinding tool to be vertical to the processing reference surface of the through hole and to be collinear with the circle center of the through hole;
c) the direction perpendicular to the processing reference surface is the axial direction of the through hole, one side opposite to the processing reference surface of the through hole is a ring surface to be processed, the rotating shaft moves along the axial direction of the through hole to enable the grinding disc to penetrate through the through hole, the rotating shaft moves along the radial direction of the through hole to enable the grinding disc to be arranged beside the ring surface to be processed, the grinding motor drives the rotating shaft to drive the grinding disc to rotate, the rotating shaft moves back along the axial direction of the through hole, when a grinding layer on the grinding disc is in contact with the ring surface to be processed of the through hole, the current detection device detects that the current of the grinding motor changes suddenly, when the current of the grinding motor changes suddenly, the plane where the grinding layer is located is the grinding reference surface of the ring surface to be processed, and therefore the distance between;
d) when the production based on grinding motor electric current suddenly changed, the pivot moved back again along the axial of through-hole, and the grinding layer of mill and the anchor ring butt of treating of through-hole rotate the centre of a circle of duplex winding through-hole simultaneously to the anchor ring of treating to the through-hole grinds, and the pivot is along the axial stroke of moving back from the grinding reference surface of through-hole for the grinding volume, and this grinding volume is H.
As a further improvement of the above scheme, the method comprises a driving device in transmission connection with the base surface scanning device, wherein the base surface scanning device can be a laser ranging device;
step a) can be replaced by step a1), the driving device drives the base surface scanning device to scan the edge of the front wall of the through hole, the scanning paths cross the through hole from the outer side of the through hole, at least two scanning paths are intersected, all the scanning paths and the edge of the through hole have at least three intersection points, the intersection points are called edge catastrophe points, so that the space coordinates of the at least three edge catastrophe points of the through hole in an XYZ coordinate system are obtained, a through hole base surface data set is formed, and the step surface of the front wall of the through hole and the circle center of the through hole are fitted according to the coordinate data of the at least.
As a further improvement of the above solution, the method comprises a driving device in transmission connection with the base surface scanning device, wherein the base surface scanning device can be a visual identification instrument;
step a) can be replaced by step a2), the driving device drives the base surface scanning device to scan the through hole, and the step surface of the front wall of the through hole and the center of the through hole are fitted through image recognition software.
As a further improvement of the scheme, the grinding machine further comprises a manipulator, wherein the grinding motor and the grinding tool are mounted on the manipulator, and the manipulator controls the grinding tool to move.
As a further improvement of the above solution, step e) is provided after step d), and the distance between the machining reference surface and the grinding reference surface in the axial direction of the through hole is equal to the thickness Z of the through hole after grinding minus the grinding amount H.
The invention has the beneficial effects that: the rotating grinding tool is contacted with the ring surface to be processed of the through hole through the grinding layer, so that the current detection device detects the sudden change of the current of the grinding motor, the grinding reference surface of the ring surface to be processed can be detected, the collision force of the grinding tool on the ring surface to be processed of the through hole can be reduced as much as possible by the rotating grinding tool, the collision force on the shell is reduced through the grinding force of the grinding layer, the deformation of the steps of the through hole is avoided, when the shell made of the composite material is processed, the difficulty that the shell is light in weight and elastic can be overcome, meanwhile, the shell is not required to be clamped again, then the ring surface to be processed is directly ground through the grinding layer, so that the grinding amount is obtained, the thickness of the through hole of the shell is obtained by matching the processing reference surface of the through hole through the scanning data of the base surface scanning device, and the through, effectively improve casing through-hole machining efficiency.
The invention is used for processing the through hole of the shell.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
Figure 1 is a schematic view of a grinding tool of an embodiment of the present invention extending into a through hole.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.
Referring to fig. 1, this is an embodiment of the invention, specifically:
the utility model provides a processing method to casing through-hole thickness, includes processing platform, base plane scanning device, grinding tool 100, grinding motor, fixed mounting in the processing bench the casing is equipped with through-hole 200 that offers through the trompil process on the casing, this grinding tool 100 includes pivot 110, mill 120, pivot 110 and mill 120 are coaxial setting, pivot 110 and mill 120 fixed connection, mill 120 be close to the terminal surface of pivot 110 on be equipped with grinding layer 130, grinding motor and pivot 110 transmission are connected, grinding motor is connected with current detection device, the processing method to casing through-hole 200 thickness include following step:
a) the base surface scanning device scans the through hole, and fits a front wall step surface of the through hole 200 and the circle center of the through hole 200 according to the scanning data of the base surface scanning device;
b) taking the front wall step surface of the through hole 200 as a processing reference surface, so that the axis of the rotating shaft 110 of the grinding tool 100 is perpendicular to the processing reference surface of the through hole 200 and is collinear with the center of the through hole 200;
c) the direction perpendicular to the processing reference surface is the axial direction of the through hole 200, one side opposite to the processing reference surface of the through hole 200 is a ring surface to be processed, the rotating shaft 110 moves along the axial direction of the through hole 200 to enable the grinding disc 120 to penetrate through the through hole 200, the rotating shaft 110 moves along the radial direction of the through hole 200 to enable the grinding disc 120 to be arranged beside the ring surface to be processed, the grinding motor drives the rotating shaft 110 to drive the grinding disc 120 to rotate, the rotating shaft 110 moves back along the axial direction of the through hole 200, when the grinding layer 130 on the grinding disc 120 is contacted with the ring surface to be processed of the through hole 200, the current detection device detects that the current of the grinding motor changes suddenly, and when the current of the grinding motor changes suddenly, the plane where the grinding layer 130 is located is the grinding reference surface of the ring surface to be processed, so that the distance between the;
d) when the generation based on grinding motor current suddenly changes, the rotating shaft 110 moves back along the axial direction of the through hole 200, the grinding layer 130 of the grinding disc 120 abuts against the to-be-processed ring surface of the through hole 200, and meanwhile, the rotating shaft 110 rotates and rotates around the circle center of the through hole 200, so that the to-be-processed ring surface of the through hole 200 is ground, the stroke of the rotating shaft 110 moving back along the axial direction of the through hole 200 from the grinding reference surface is a grinding amount, and the grinding amount is H.
The rotating grinding tool 100 touches the ring surface to be processed of the through hole 200 through the grinding layer 130, so that the current detection device detects that the current of the grinding motor generates sudden change, and further the grinding reference surface of the ring surface to be processed can be detected, the rotating grinding tool 100 can reduce the impact force of the grinding tool 100 on the ring surface to be processed of the through hole 200 as much as possible, the impact force on the shell is reduced through the grinding force of the grinding layer 130, the deformation of the step of the through hole 200 is avoided, when the shell made of composite materials is processed, the difficulty of light weight and elasticity of the shell can be overcome, meanwhile, the shell does not need to be clamped again, then the ring surface to be processed is directly ground through the grinding layer 130, so that the grinding amount is obtained, the thickness of the shell through hole is obtained by combining the scanning data of a base surface scanning device and fitting the processing reference surface of the through hole 200, the through hole with the set thickness can be rapidly processed, and the processing efficiency of the shell through hole is effectively improved.
Further preferably, the method comprises a driving device in transmission connection with the base surface scanning device, wherein the base surface scanning device can be a laser distance measuring device, and the driving device can drive the base surface scanning device to translate on an XY coordinate plane on an XYZ coordinate system on the processing table;
step a) can be replaced by step a1), the driving device drives the base plane scanning device to scan the edge of the front wall of the through hole 200, the scanning paths cross the through hole 200 from the outer side of the through hole 200, at least two scanning paths are intersected, all the scanning paths have at least three intersection points with the edge of the through hole 200, the intersection points are called edge mutation points, so that the space coordinates of the at least three edge mutation points of the through hole 200 in an XYZ coordinate system are obtained, a base plane data set of the through hole 200 is formed, and the step plane of the front wall of the through hole 200 and the circle center of the through hole 200 are fitted according to the coordinate data of the at least three edge mutation points in.
The base surface scanning device is driven by the driving device to scan the through hole 200 of the shell, a through hole 200 base surface data set is formed through the space coordinates of the through hole 200 edge mutation points on at least two crossed scanning paths, the through hole 200 edge mutation points are points at which the change rate of scanning data of the base surface scanning device is suddenly increased, and the front wall step surface of the through hole 200 and the circle center of the through hole 200 are fitted according to the coordinate data of the through hole 200 edge mutation points on at least two scanning paths in the through hole 200 base surface data set, so that the processing accuracy of the through hole 200 is improved, and the situation that the position of the through hole 200 deviates and a large amount of waste products are caused is prevented.
As a further improvement of the above scheme, the method comprises a driving device in transmission connection with the base surface scanning device, and the base surface scanning device can adopt visual identification instruments such as photographing and the like;
step a) can be replaced by step a2), the driving device drives the base surface scanning device to scan and photograph the through hole 200, and the step surface of the front wall of the through hole 200 and the center of the through hole 200 are fitted through image recognition software.
Further, in a preferred embodiment, the grinding machine further includes a robot, the grinding motor and the grinding tool 100 are mounted on the robot, and the robot controls the movement of the grinding tool 100. The movement of the grinding tool 100 is controlled by the manipulator, the precision of the movement and grinding of the grinding tool 100 can be improved, the manipulator is electrically connected with the base surface scanning device, data obtained by scanning of the base surface scanning device are transmitted to the manipulator, and the manipulator drives the grinding tool 100 to move according to a set movement track.
Further preferably, step e) is provided after step d), and the distance between the machining reference surface and the grinding reference surface in the axial direction of the through hole 200 is equal to the thickness Z of the through hole 200 after grinding by subtracting the grinding amount H from L.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A processing method for the thickness of a through hole of a shell is characterized in that: including processing platform, base plane scanning device, grinding tool (100), grinding motor, fixed mounting in the casing of processing bench be equipped with through-hole (200) on the casing, this grinding tool (100) are including pivot (110), mill (120), and pivot (110) are coaxial setting with mill (120), pivot (110) and mill (120) fixed connection, mill (120) be close to and be equipped with grinding layer (130) on the terminal surface of pivot (110), grinding motor is connected with pivot (110) transmission, grinding motor is connected with current detection device, the processing method to casing through-hole (200) thickness include following step:
a) the base surface scanning device scans the through hole, and fits a front wall step surface of the through hole (200) and the circle center of the through hole (200) according to the scanning data of the base surface scanning device;
b) taking the front wall step surface of the through hole (200) as a processing reference surface, and enabling the axis of the rotating shaft (110) of the grinding tool (100) to be vertical to the processing reference surface of the through hole (200) and to be collinear with the circle center of the through hole (200);
c) the direction vertical to the processing reference surface is the axial direction of the through hole (200), one side opposite to the processing reference surface of the through hole (200) is a ring surface to be processed, the rotating shaft (110) moves along the axial direction of the through hole (200) to enable the grinding disc (120) to pass through the through hole (200), the rotating shaft (110) moves along the radial direction of the through hole (200) to enable the grinding disc (120) to be arranged at the side of the ring surface to be processed, the grinding motor drives the rotating shaft (110) to drive the grinding disc (120) to rotate, the rotating shaft (110) moves back along the axial direction of the through hole (200), when the grinding layer (130) on the grinding disc (120) is contacted with the ring surface to be processed of the through hole (200), the current detection device detects the current of the grinding motor to generate sudden change, and based on the current of the grinding motor to generate sudden change, the plane where the grinding layer (130) is positioned is the grinding reference surface of the ring surface to be processed, thereby obtaining that the distance between the processing reference surface and the grinding reference surface in the axial direction of the through hole (200) is L;
d) when the current of the grinding motor suddenly changes, the rotating shaft (110) moves back along the axial direction of the through hole (200), the grinding layer (130) of the grinding disc (120) is abutted to the ring surface to be machined of the through hole (200), meanwhile, the rotating shaft (110) rotates and rotates around the circle center of the through hole (200), so that the ring surface to be machined of the through hole (200) is ground, the stroke of the rotating shaft (110) moving back along the axial direction of the through hole (200) from the grinding reference surface is the grinding amount, and the grinding amount is H.
2. The processing method for the thickness of the through hole of the shell as claimed in claim 1, wherein: the device comprises a driving device in transmission connection with a base surface scanning device, wherein the base surface scanning device can be a laser ranging device;
the step a) can be replaced by the step a1), the driving device drives the base surface scanning device to scan the edge of the front wall of the through hole (200), the scanning paths cross the through hole (200) from the outer side of the through hole (200), at least two scanning paths are intersected, all the scanning paths have at least three intersection points with the edge of the through hole (200), the intersection points are called edge mutation points, so that the space coordinates of at least three edge mutation points of the through hole (200) in an XYZ coordinate system are obtained, a base surface data set of the through hole (200) is formed, and the step surface of the front wall of the through hole (200) and the circle center of the through hole (200) are fitted according to the coordinate data of at least three edge mutation points in the base surface data.
3. The processing method for the thickness of the through hole of the shell as claimed in claim 1, wherein: the device comprises a driving device in transmission connection with a base surface scanning device, wherein the base surface scanning device can be a visual identification instrument;
step a) can be replaced by step a2), the driving device drives the base surface scanning device to scan the through hole (200), and the step surface of the front wall of the through hole (200) and the center of the through hole (200) are fitted through image recognition software.
4. The processing method for the thickness of the through hole of the shell as claimed in claim 1, wherein: the grinding machine further comprises a manipulator, wherein the grinding motor and the grinding tool (100) are mounted on the manipulator, and the manipulator controls the grinding tool (100) to move.
5. The processing method for the thickness of the through hole of the shell as claimed in claim 1, wherein: step e) is also provided after step d), and the distance between the processing reference surface and the grinding reference surface in the axial direction of the through hole (200) is equal to the thickness Z of the through hole (200) after grinding by subtracting the grinding amount H from L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910460185.7A CN110170904B (en) | 2019-05-30 | 2019-05-30 | Method for processing thickness of through hole of shell |
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| CN201910460185.7A CN110170904B (en) | 2019-05-30 | 2019-05-30 | Method for processing thickness of through hole of shell |
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| CN110170904B true CN110170904B (en) | 2021-04-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018027597A (en) * | 2016-08-18 | 2018-02-22 | 株式会社ディスコ | Measuring tool |
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| JP5283506B2 (en) * | 2006-09-12 | 2013-09-04 | 株式会社荏原製作所 | Polishing apparatus and polishing method |
| CN201900559U (en) * | 2010-11-22 | 2011-07-20 | 王敬达 | Grinding pressure control device of grinding head |
| JP5917994B2 (en) * | 2012-04-23 | 2016-05-18 | スピードファム株式会社 | Measuring window structure for polishing equipment |
| CN106862880B (en) * | 2017-03-06 | 2019-08-27 | 中航动力株洲航空零部件制造有限公司 | Hollow shaft processing method |
| CN108942245B (en) * | 2018-07-09 | 2020-04-21 | 佛山市科莱机器人有限公司 | Shell through hole machining method and machining tool |
| CN109128840B (en) * | 2018-07-09 | 2020-05-22 | 佛山市科莱机器人有限公司 | Shell machining reference positioning method, residual edge cutting method and through hole machining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018027597A (en) * | 2016-08-18 | 2018-02-22 | 株式会社ディスコ | Measuring tool |
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