CN117532400A - Pneumatic milling tool with adjustable depth - Google Patents
Pneumatic milling tool with adjustable depth Download PDFInfo
- Publication number
- CN117532400A CN117532400A CN202311784635.0A CN202311784635A CN117532400A CN 117532400 A CN117532400 A CN 117532400A CN 202311784635 A CN202311784635 A CN 202311784635A CN 117532400 A CN117532400 A CN 117532400A
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- Prior art keywords
- milling
- air inlet
- depth
- air
- pneumatic
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- 238000003801 milling Methods 0.000 title claims abstract description 126
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/08—Control or regulation of cutting velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to a pneumatic milling tool with adjustable depth, which comprises an air inlet unit, a milling unit and an adjusting unit, wherein the air inlet unit is provided with an air inlet channel; the milling unit comprises a pneumatic blade, a rotating shaft and a milling cutter which are sequentially and fixedly connected, the air outlet end of the air inlet channel faces the pneumatic blade, and air flow blown out of the air inlet channel can blow the pneumatic blade to rotate so as to drive the milling cutter to rotate; the adjusting unit comprises a depth adjusting seat which can slide along the axial direction of the milling cutter relative to the milling cutter so as to change the length of the milling cutter extending out of the depth adjusting seat. Compared with the prior art, the pneumatic milling tool with adjustable depth provided by the invention changes the length of the milling cutter extending out of the depth adjusting seat by sliding the depth adjusting seat, so that the milling depth is accurately controlled and kept unchanged in the whole milling process, and the milling quality is ensured.
Description
Technical Field
The invention relates to the technical field of milling equipment, in particular to a pneumatic milling tool with adjustable depth.
Background
In the existing aircraft repair process, due to the limitation of construction space, the milling work of many structural parts needs in-situ operation, a machine tool cannot be used, particularly, an oil tank area is involved, the milling of electric equipment is forbidden, and the milling work is completed by means of a handheld pneumatic tool.
The existing hand-held pneumatic milling tool uses a straight shank air drill to clamp a milling cutter or a rotary file, and the milling tool is driven to rotate by compressed air, so that the milling purpose is achieved. A straight shank air drill as disclosed in CN 209520398U.
The existing straight shank pneumatic drill is used for milling, the milling depth cannot be controlled accurately, damage to bottom parts of structural members of aircraft is easily caused, the existing straight shank pneumatic drill is unstable in hand, and the existing straight shank pneumatic drill is easy to jump, so that damage to the structural members is caused.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a depth-adjustable pneumatic milling tool for solving the technical problems that in the prior art, a straight shank type pneumatic drill cannot precisely control the milling depth and is very easy to cause damage to bottom parts of structural members of aircrafts.
The invention provides a depth-adjustable pneumatic milling tool, which comprises: the milling device comprises an air inlet unit, a milling unit and an adjusting unit, wherein the air inlet unit is provided with an air inlet channel; the milling unit comprises a pneumatic blade, a rotating shaft and a milling cutter which are sequentially and fixedly connected, the air outlet end of the air inlet channel faces the pneumatic blade, and air flow blown out of the air inlet channel can blow the pneumatic blade to rotate so as to drive the milling cutter to rotate; the adjusting unit comprises a depth adjusting seat which can slide along the axial direction of the milling cutter relative to the milling cutter so as to change the length of the milling cutter extending out of the depth adjusting seat.
Further, the air inlet unit comprises an air inlet shell and an air inlet amount control assembly, the air inlet shell forms an air inlet channel and a first mounting cavity communicated with the air inlet channel, and a first air inlet and a first air outlet are formed at two ends of the air inlet channel; an intake air amount control assembly is built in the first mounting cavity to control the intake air amount.
Further, the air inflow control assembly comprises a control main body, an adjusting rod, a limiting block and a first elastic piece, wherein the control main body is arranged in the first mounting cavity and is fixedly connected with the air inflow shell, the control main body is provided with a first air channel and a control channel which are mutually communicated, two ends of the first air channel are respectively communicated with the first air inlet and the first air outlet, the air inflow shell is provided with a control hole communicated with the control channel, the first elastic piece is arranged in the control channel and is connected with one end of the control main body and one end of the adjusting rod, the other end of the adjusting rod extends out of the control hole, and the limiting block is fixedly arranged on the adjusting rod and is positioned at the junction of the first air channel and the control channel; the limiting block can be driven to move in the control channel through the adjusting rod so as to adjust the amplitude of the limiting block in the first gas channel.
Further, the air inflow control assembly further comprises a rotary switch, the rotary switch is sleeved on the air inlet shell and is rotationally connected with the air inlet shell, an adjusting groove with gradually increased depth is formed in the inner side of the rotary switch, the adjusting rod is abutted with the adjusting groove, the abutting position of the adjusting rod and the adjusting groove can be changed by rotating the rotary switch, and therefore the displacement of the adjusting rod in the control channel is changed.
Further, the milling unit further comprises a milling shell and a bearing, the milling shell is fixedly connected with the air inlet shell, the milling shell is provided with a second installation cavity, a second air inlet, a second air outlet and a rotating shaft opening, the second air inlet is communicated with the first air outlet, the pneumatic blade is arranged in the second installation cavity and is rotationally connected with the milling shell through a bearing, and the rotating shaft penetrates through the rotating shaft opening and is rotationally connected with the milling shell through another bearing.
Further, the second air inlet is arranged eccentrically with respect to the rotation shaft and faces the air vane to blow the air vane to rotate.
Further, the adjusting unit further comprises an adjusting inner shell and a locking device, the adjusting inner shell is fixedly connected with the milling outer shell, the locking device is fixedly connected with the adjusting inner shell in a sliding mode along the axial direction of the milling cutter, the depth adjusting seat is connected with the adjusting inner shell in a sliding mode, and one end of the depth adjusting seat is abutted with the locking device.
Further, the adjusting unit further comprises an elastic piece, and two ends of the elastic piece are respectively connected with the adjusting inner shell and the depth adjusting seat.
Further, the outer surface of the adjusting inner shell is provided with external threads, the locking device is provided with a threaded hole and sleeved on the adjusting inner shell, the locking device can move along the axial direction of the milling cutter relative to the adjusting inner shell through meshing rotation of the threaded hole and the external threads.
Further, the adjusting inner housing has a through hole through which the spindle and/or the milling cutter is arranged.
Compared with the prior art, the pneumatic milling tool with adjustable depth provided by the invention changes the length of the milling cutter extending out of the depth adjusting seat by sliding the depth adjusting seat, so that the milling depth is accurately controlled and kept unchanged in the whole milling process, and the milling quality is ensured.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and its details set forth in the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of an embodiment of a depth-adjustable pneumatic milling tool according to the present invention;
FIG. 2 is a top view of an adjustable depth pneumatic milling tool provided by the present invention;
FIG. 3 is a cross-sectional view taken along section A-A of FIG. 2;
FIG. 4 is a cross-sectional view of section B-B of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a schematic diagram of a mechanism of the rotary switch in fig. 1.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, the present invention provides a depth-adjustable pneumatic milling tool. The pneumatic milling tool with the adjustable depth can be applied to the repair process of an aircraft, pneumatic milling is carried out on undetachable parts on site, and the milling depth can be controlled by an operator with high precision.
The pneumatic milling tool with the adjustable depth comprises an air inlet unit 1, a milling unit 2 and an adjusting unit 3, wherein the air inlet unit 1 is provided with an air inlet channel, and external air supply equipment is communicated with the air inlet end of the air inlet channel. The milling unit 2 comprises a pneumatic blade 21, a rotating shaft 22 and a milling cutter 23 which are sequentially and fixedly connected, the air outlet end of the air inlet channel faces the pneumatic blade 21, and air flow blown out by external air supply equipment through the air inlet channel can blow the pneumatic blade 21 to rotate and drive the milling cutter 23 to rotate through the rotating shaft 22. The adjustment unit 3 comprises a depth adjustment seat 31, the depth adjustment seat 31 being slidable relative to the milling cutter 23 in the axial direction of the milling cutter 23 to vary the length of the milling cutter 23 extending beyond the depth adjustment seat 31.
During milling operation, the length of the milling cutter 23 extending out of the depth adjusting seat 31 is the milling depth, when the milling depth is set for processing, the depth adjusting seat 31 is propped against the periphery of a milling part, and then the pneumatic milling tool is moved for milling, so that the milling depth is constant during milling, and the milling quality is ensured.
In some embodiments, the air intake unit 1 includes an air intake housing 11 and an air intake amount control assembly 12, the air intake housing 11 forming an air intake passage and a first mounting chamber communicating with the air intake passage, the air intake passage being formed at both ends thereof with a first air intake port 111 and a first air outlet port 112. The first air inlet 111 may employ a standard interface to facilitate connection with external air supply equipment. The intake air amount control assembly 12 is built in the first mounting chamber to control the intake air amount, and the rotational speed of the milling cutter 23 can be controlled by controlling the intake air amount.
To facilitate installation of intake air amount control assembly 12, intake housing 11 preferably employs a multi-component splice construction, with each component enclosing a first mounting cavity.
In some embodiments, intake air amount control assembly 12 includes a control body 121, an adjustment lever 122, a limiting block 123, and a first elastic member 124. The control body 121 is built in the first installation cavity and fixedly connected with the air inlet housing 11, and the control body 121 is formed with a first gas passage 1211 and a control passage 1212 which are communicated with each other. Both ends of the first gas passage 1211 communicate with the first gas inlet and the first gas outlet, respectively, and the gas flow of the external gas supply device is blown to the milling unit 2 through the first gas passage 1211. The air inlet housing 11 is formed with a control hole communicating with the control channel 1212, and the first elastic member 124 is disposed in the control channel 1212 and connects the control body 121 and one end of the adjustment lever 122. The other end of the adjusting rod 122 extends out of the control hole, and a limiting block 123 is fixedly arranged on the adjusting rod 122 and is positioned at the intersection of the first gas channel 1211 and the control channel 1212. The limiting block 123 is movable in the control channel 1212 by the adjusting lever 122 to adjust the amplitude of the limiting block 123 in the first gas channel 1211. The more the restriction block 123 is located within the first gas channel 1211, the greater the extent of encroachment on the first gas channel 1211, the greater the obstruction effect on the gas flow, and the less the gas flow. And conversely, the larger the gas flow.
Referring to fig. 5 and 6, in some embodiments, intake air amount control assembly 12 further includes a rotary switch 125, it being readily understood that rotary switch 125 controls the amount of airflow by controlling the amount of movement of adjustment lever 122 within control passage 1212. The rotary switch 125 is sleeved on the air inlet housing 11 and is rotationally connected with the air inlet housing 11, and an adjusting groove 1251 with gradually increased depth is formed on the inner side of the rotary switch 125. The adjusting lever 122 is abutted against the adjusting groove 1251, and the abutting position of the adjusting lever 122 against the adjusting groove 1251 can be changed by rotating the rotary switch 125, so that the displacement of the adjusting lever 122 in the control channel 1212 can be changed.
In a preferred embodiment, the adjusting rod 122 may further be provided with a blocking member, where the blocking member is located in the control channel 1212 near the control hole, and the blocking member is in sliding connection with the control channel 1212 in a sealing manner or in a clearance fit connection, but with a very small clearance, so as to avoid or minimize the air leakage of the control channel 1212.
In some embodiments, the milling unit 2 further includes a milling housing 24 and a bearing 25, the milling housing 24 is fixedly connected with the air inlet housing 11, the milling housing 24 is formed with a second installation cavity, and a second air inlet 241, a second air outlet 242 and a rotating shaft opening which are communicated with the second installation cavity, and the second air inlet 241 is communicated with the first air outlet 112. The air vane 21 is arranged in the second mounting cavity and is rotatably connected with the milling housing 24 by a bearing 25, and the rotating shaft 22 penetrates through the rotating shaft opening and is rotatably connected with the milling housing 24 by another bearing 25.
In a preferred embodiment, the second air inlet 241 is arranged eccentrically with respect to the rotation shaft 22 and is directed towards the air vane 21 to blow the air vane 21 into rotation.
In some embodiments, the adjustment unit 3 further comprises an adjustment inner housing 32 and a lock 33, the adjustment inner housing 32 being fixedly connected to the milling outer housing 24, the lock 33 being fixedly slidably connected to the adjustment inner housing 32 in the axial direction of the milling cutter 23, the depth adjustment seat 31 being slidably connected to the adjustment inner housing 32 and having one end abutting the lock 33. By sliding the slide lock 33 to a specific position on the adjustment inner housing 32 and locking it, the depth adjustment seat 31 can be held by abutting one end against the lock 33 and the other end against a structure around the milling part in use, thereby fixing the length of the milling cutter 23 extending out of the depth adjustment seat 31 and controlling the milling depth.
The adjustment inner housing 32 may have a through hole through which the spindle 22 and/or the milling cutter 23 is arranged.
In the preferred embodiment, the adjusting unit 3 further includes an elastic member 34, and both ends of the elastic member 34 are respectively connected to the adjusting inner housing 32 and the depth adjusting seat 31. The depth adjusting seat 31 is prevented from slipping off the adjusting inner shell 32, and can extend out when not in use, so that the milling cutter 23 is protected. The elastic member 34 may be a spring, and is sleeved on the milling cutter 23.
In some embodiments, the outer surface of the inner adjusting housing 32 has an external thread, the locking device 33 has a threaded hole and is sleeved on the inner adjusting housing 32, and the locking device 33 can move along the axial direction of the milling cutter 23 relative to the inner adjusting housing 32 and can be kept still under the condition of being pushed by the depth adjusting seat 31 through the engagement and rotation of the threaded hole and the external thread.
Compared with the prior art, the pneumatic milling tool with adjustable depth provided by the invention changes the length of the milling cutter extending out of the depth adjusting seat by sliding the depth adjusting seat, so that the milling depth is accurately controlled and kept unchanged in the whole milling process, and the milling quality is ensured.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. A depth-adjustable pneumatic milling tool, comprising: the milling device comprises an air inlet unit, a milling unit and an adjusting unit, wherein the air inlet unit is provided with an air inlet channel; the milling unit comprises a pneumatic blade, a rotating shaft and a milling cutter which are sequentially and fixedly connected, the air outlet end of the air inlet channel faces the pneumatic blade, and the air flow blown out of the air inlet channel can blow the pneumatic blade to rotate so as to drive the milling cutter to rotate; the adjusting unit comprises a depth adjusting seat which can slide relative to the milling cutter along the axial direction of the milling cutter so as to change the length of the milling cutter extending out of the depth adjusting seat.
2. The depth-adjustable pneumatic milling tool of claim 1, wherein the air inlet unit comprises an air inlet housing and an air inlet amount control assembly, the air inlet housing forming the air inlet channel and a first mounting cavity communicating with the air inlet channel, the air inlet channel forming a first air inlet and a first air outlet at both ends; the air inflow control assembly is arranged in the first mounting cavity to control the air inflow.
3. The depth-adjustable pneumatic milling tool according to claim 2, wherein the air inflow control assembly comprises a control main body, an adjusting rod, a limiting block and a first elastic piece, the control main body is arranged in the first mounting cavity and is fixedly connected with the air inflow shell, the control main body is provided with a first air channel and a control channel which are mutually communicated, two ends of the first air channel are respectively communicated with the first air inlet and the first air outlet, the air inflow shell is provided with a control hole communicated with the control channel, the first elastic piece is arranged in the control channel and is connected with one end of the control main body and one end of the adjusting rod, the other end of the adjusting rod extends out of the control hole, and the limiting block is fixedly arranged on the adjusting rod and is positioned at the junction of the first air channel and the control channel; the limiting block can be driven to move in the control channel through the adjusting rod so as to adjust the amplitude of the limiting block in the first gas channel.
4. The depth-adjustable pneumatic milling tool according to claim 3, wherein the air inflow control assembly further comprises a rotary switch, the rotary switch is sleeved on the air inlet housing and is rotationally connected with the air inlet housing, an adjusting groove with gradually increased depth is formed in the inner side of the rotary switch, the adjusting rod is abutted to the adjusting groove, and the abutting position of the adjusting rod and the adjusting groove can be changed by rotating the rotary switch, so that the displacement of the adjusting rod in the control channel is changed.
5. The depth-adjustable pneumatic milling tool of claim 2, wherein the milling unit further comprises a milling housing and a bearing, the milling housing is fixedly connected with the air inlet housing, the milling housing is formed with a second mounting cavity, a second air inlet, a second air outlet and a rotating shaft opening, the second air inlet is communicated with the first air outlet, the pneumatic blade is arranged in the second mounting cavity and is rotatably connected with the milling housing through one bearing, and the rotating shaft penetrates through the rotating shaft opening and is rotatably connected with the milling housing through the other bearing.
6. The adjustable depth pneumatic milling tool of claim 5, wherein the second air inlet is arranged eccentrically with respect to the spindle and toward the pneumatic blade to blow the pneumatic blade for rotation.
7. The depth-adjustable pneumatic milling tool of claim 5, wherein the adjustment unit further comprises an adjustment inner housing fixedly connected to the milling outer housing and a lock fixedly slidably connected to the adjustment inner housing in the axial direction of the milling cutter, the depth adjustment seat being slidably connected to the adjustment inner housing and having one end abutting the lock.
8. The depth-adjustable pneumatic milling tool of claim 7, wherein the adjustment unit further comprises an elastic member, and two ends of the elastic member are respectively connected to the adjustment inner housing and the depth adjustment seat.
9. The adjustable depth pneumatic milling tool of claim 7 wherein the outer surface of the inner housing has external threads and the lock has a threaded bore and is received on the inner housing for rotation in engagement with the external threads, the lock being movable axially along the milling cutter relative to the inner housing.
10. The depth-adjustable pneumatic milling tool of claim 7, wherein the adjustment housing has a through hole through which the spindle and/or the milling cutter is disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784635.0A CN117532400A (en) | 2023-12-23 | 2023-12-23 | Pneumatic milling tool with adjustable depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784635.0A CN117532400A (en) | 2023-12-23 | 2023-12-23 | Pneumatic milling tool with adjustable depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117532400A true CN117532400A (en) | 2024-02-09 |
Family
ID=89784392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311784635.0A Pending CN117532400A (en) | 2023-12-23 | 2023-12-23 | Pneumatic milling tool with adjustable depth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117532400A (en) |
-
2023
- 2023-12-23 CN CN202311784635.0A patent/CN117532400A/en active Pending
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