CN112404880A - Machining and positioning device for rear-section mounting hole in large thin-wall auxiliary oil tank - Google Patents
Machining and positioning device for rear-section mounting hole in large thin-wall auxiliary oil tank Download PDFInfo
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- CN112404880A CN112404880A CN202011295125.3A CN202011295125A CN112404880A CN 112404880 A CN112404880 A CN 112404880A CN 202011295125 A CN202011295125 A CN 202011295125A CN 112404880 A CN112404880 A CN 112404880A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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Abstract
The invention discloses a processing and positioning device for a rear-section mounting hole in a large-sized thin-wall auxiliary oil tank, which comprises a base (7), a middle-section positioning device (8), a clamping mechanism I (9), a clamping mechanism II (12) and a rear-section positioning device (14), wherein the middle-section positioning device is fixedly arranged at the front end of the base (7), the rear-section positioning device (14) is arranged at the rear end of the base (7), the middle-section positioning device (8) is coaxial with a positioning ring of the rear-section positioning device (14), the clamping mechanism I (9) comprises an adjusting seat (31), an arc-shaped supporting block (25) and a steel belt (23), the clamping mechanism II (12) is similar to the clamping mechanism I (9), the arc-shaped supporting block (25) of the clamping mechanism I (9) and the clamping mechanism II (12) is in surface contact with the outer wall of a cylinder body, and then the steel belt (23) is tensioned and fastened, the assembly efficiency and the assembly precision are improved, and the product quality is ensured.
Description
Technical Field
The invention relates to a processing and positioning tool for an auxiliary oil tank mounting hole, in particular to a processing and positioning device for a rear section mounting hole in a large thin-wall auxiliary oil tank.
Background
In modern war, the use of the secondary oil tank can greatly increase the endurance time of the warplane, effectively increase the radius of battle and add chips for the victory of war. The processing and manufacturing quality of the auxiliary fuel tank is an important link for guaranteeing the performance of the airplane, and along with the continuous improvement of the performance of the fighter plane, the requirement on the reliability of the auxiliary fuel tank is also continuously improved. The bellytank is a large, thin-walled, closed variable cross-section box, as shown in fig. 11 and 12, the large thin-walled bellytank generally comprises a front section barrel 1, a middle section barrel 2, a rear section barrel 3 and a hanging rack 5, the front section barrel 1, the middle section barrel 2 and the rear section barrel 3 are welded into a whole, the hanging rack 5 is connected with the rear section barrel 3 through a main lifting lug 4 and a tail hook 6, the bellytank is butted with an airplane through the main lifting lug 4 of the middle section barrel 2 and the tail hook 6 of the rear section barrel 3, a mounting seat of the main lifting lug 4 and the tail hook 6 is fixed on the barrel of the bellytank in a welding way after processing, the middle section barrel 2 and the rear section barrel 3 are connected through a girth weld joint, the bellytank has irregular deformation due to processing stress and clamping in the welding and other processing processes, the main lifting lug 4 and the tail hook 6 can not be arranged in a, even the front end point of the auxiliary fuel tank is seriously deviated from the central axis, so the dimensional precision and the form and position tolerance of the main lifting lug mounting hole 15 and the tail hook mounting hole 16 are very important for the precision of the whole auxiliary fuel tank. The main lifting lug 4 and the tail hook 6 are ensured to be respectively arranged in a main lifting lug mounting hole 15 and a tail hook mounting hole 16 mainly by repairing bolt through holes of the main lifting lug 4 and the tail hook 6, and the main lifting lug 4 and the tail hook 6 can compensate the offset of the two mounting holes to the central axis; through repairing the bolt through holes of the main lifting lug 4 and the tail hook 6, the assembling efficiency is low, the offset of the two mounting holes to the central axis cannot be accurately measured under the condition of no reference, the repairing difficulty is increased, and the front end point of the auxiliary oil tank is seriously deviated from the central axis after the main lifting lug 4 and the tail hook 6 are connected into an airplane.
Disclosure of Invention
One of the purposes of the invention is to design a positioning tool for machining a mounting hole at the middle and rear sections of an auxiliary oil tank, and the positioning tool is used for simulating a virtual reference of the rear section of a large thin-wall auxiliary oil tank to position the mounting hole at the middle and rear sections, so that the assembly efficiency is improved, and the assembly quality of the auxiliary oil tank is ensured.
The invention is realized by the following technical scheme: the utility model provides a processing positioner of back end mounting hole in vice oil tank of large-scale thin wall which characterized in that: the middle section positioning device comprises a base, a middle section positioning device, a clamping mechanism I, a clamping mechanism II and a rear section positioning device, wherein the middle section positioning device comprises an upper clamp, a positioning ring and a support frame, the support frame is fixedly arranged at the front end of the base, the positioning ring is arranged at the side edge of the support frame, the inner ring of the positioning ring is matched with the outer wall surface of a middle section barrel positioning area A, the two ends of the upper clamp are detachable, the support frame is connected with the upper clamp, the rear section positioning device is arranged at the rear end of the base, the structure of the rear section positioning device is similar to that of the middle section positioning device, the positioning ring of the rear section positioning device is matched with the outer wall surface of a rear section barrel positioning area B, the positioning ring of the middle section positioning device is coaxial with that of the rear section positioning device, and the clamping mechanism I comprises an adjusting seat, The clamping mechanism I is arranged on the adjusting seat and the top part of the adjusting seat, the arc-shaped supporting block is arranged on the top surface of the top part of the adjusting seat and is in contact with the outer wall surface of the cylinder, the steel belt is locked on the adjusting seat and the top part of the adjusting seat at two ends and is in contact with the outer wall surface of the cylinder, and the clamping mechanism II is similar to the clamping mechanism I in structure, and the difference is that the arc shape and the length of the steel belt of the arc-shaped supporting block of the clamping mechanism I and the length of the arc shape and the length of the.
Furthermore, two sets of arc-shaped supporting blocks and steel belts of the clamping mechanism I and the clamping mechanism II are arranged on the top surfaces of the adjusting seat and the top part of the adjusting seat at intervals.
The positioning device comprises a base, a middle section positioning device and a rear section positioning device, and is characterized by further comprising an angular positioning mechanism arranged on one side of the base, wherein the angular positioning mechanism comprises a positioning pin, an installation seat and a supporting seat, the positioning pin is horizontally arranged on the installation seat, the installation seat is fixedly arranged at the top of the supporting seat, the bottom of the supporting seat is fixedly arranged on the base, and the height of the axis of the positioning pin is equal to the height of a central line formed by the centers of the positioning rings of the middle section positioning device and the rear section positioning device.
Further, still including installing strutting arrangement I and strutting arrangement II at the base opposite side, strutting arrangement I include arc supporting seat, transition piece, screw rod support, screw rod, support body, the support body bottom install on the base, the support body top adorn admittedly the screw rod support, the screw rod spiro union be in the screw rod support on, the screw rod front end connect gradually the transition piece with the arc supporting seat, strutting arrangement II the structure with strutting arrangement I similar, be different in strutting arrangement I with the arc of the arc supporting seat of strutting arrangement II respectively with barrel outer wall contact surface phase-match.
Furthermore, the parallelism between the upper surface of the base as a mounting surface and the lower surface of the base as a surface connected with a machine tool machining platform is less than 0.05 mm.
Furthermore, the coaxiality of the positioning rings of the middle section positioning device and the rear section positioning device is less than 0.2 mm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the simulation positioning is accurate. The middle section positioning device and the rear section positioning device are respectively arranged at the front end and the rear end of the base, so that the distance between the two positioning devices is ensured, and a region with larger welding influence on the cylinder is avoided; the positioning rings of the middle section positioning device and the rear section positioning device which are respectively positioned in the front section and the rear section are coaxial, so that accurate simulation positioning is realized.
The clamping is reliable. After the arc supporting block and the outer wall of the barrel body are in face contact through the clamping mechanism I and the clamping mechanism II, the steel belt is tightened and fastened, and the mounting hole can be effectively clamped to avoid shaking or vibrating during machining, so that clamping is reliable.
The operation is convenient. The outer surface reference of the cylinder does not need to be manually aligned, and the cylinder is fastened during processing.
The assembly efficiency is improved, and the product quality is ensured. By optimizing a process route, firstly welding the mounting seats of the main lifting lug 4 and the tail hook 6, reserving 5mm allowance on one side of a main lifting lug mounting hole 15 and a tail hook mounting hole 16 of the mounting seats, adding an angular positioning hole 17 which is collinear with the circle centers of the main lifting lug mounting hole 15 and the tail hook mounting hole 16, inserting a positioning pin of an angular positioning mechanism into the angular positioning hole 17 during clamping, and ensuring the limit of the rotation direction; carry out the auxiliary stay through strutting arrangement I, strutting arrangement II, reduce the deformation influence of cutting force to the thin wall component when processing main lug mounting hole 15 and tail hook mounting hole 16, solved the difficult problem that thin wall component welding deformation influences the assembly, need not to repair during the assembly and join in marriage, improve assembly efficiency and assembly precision, guaranteed the quality of product.
Drawings
FIG. 1 is a schematic front view of a positioning device for machining a rear-section mounting hole in a large-sized thin-wall auxiliary oil tank.
Fig. 2 is a schematic top view of fig. 1.
FIG. 3 is a schematic front view of a middle section positioning device and a rear section positioning device of the machining positioning device for the rear section mounting hole in the large-sized thin-wall auxiliary oil tank.
Fig. 4 is a schematic left side view of fig. 3.
FIG. 5 is a schematic front view of a clamping mechanism I and a clamping mechanism II of the machining and positioning device for the rear-section mounting hole in the large-sized thin-wall auxiliary oil tank.
Fig. 6 is a schematic right view of fig. 5.
FIG. 7 is a schematic front view of an angular positioning mechanism of the machining and positioning device for the rear section installation hole in the large-sized thin-wall auxiliary oil tank.
Fig. 8 is a left side schematic view of fig. 7.
FIG. 9 is a schematic front view of a supporting device I and a supporting device II of the machining and positioning device for the rear-section mounting hole in the large-sized thin-wall auxiliary oil tank.
Fig. 10 is a left side schematic view of fig. 9.
FIG. 11 is a schematic view of the external structure of a large thin-wall drop tank.
FIG. 12 is a schematic diagram of a reference simulation of the positioning device for machining the rear-section mounting hole in the large-sized thin-wall auxiliary oil tank.
In the figure: 1. the steel belt lifting device comprises a front section cylinder body, a middle section cylinder body, a rear section cylinder body, a main lifting lug, a hanging frame, a tail hook, a base, a middle section positioning device, a clamping mechanism I, a supporting device I, an angular positioning mechanism 11, a clamping mechanism II, a supporting device 14, a rear section positioning device, a main lifting lug mounting hole 15, a tail hook mounting hole 16, an angular positioning hole 17, an upper clamp 18, a plug pin 19, a support 20, a positioning ring 21, a support frame 22, a steel belt 23, a hanging buckle 24, an arc-shaped support block 25, a slide block 26, a wedge-shaped block 27, a screw rod I29, a screw rod II, a fixed seat 30, an adjusting seat 31, a positioning pin 32, a positioning pin 33, a mounting seat 34, a support seat 35, an arc-shaped support seat, a transition block 36, a screw rod support seat 38, a screw rod 39 and a frame body.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1 to 10, a positioning device for processing a rear-section mounting hole in a large thin-wall auxiliary oil tank is characterized in that: the clamping device comprises a base 7, a middle section positioning device 8, a clamping mechanism I9, a clamping mechanism II 12 and a rear section positioning device 14 which are fixedly arranged on the base 7, wherein the middle section positioning device 8 comprises an upper hoop 18, a positioning ring 21 and a supporting frame 22, the supporting frame 22 is fixedly arranged at the front end of the base 7, the positioning ring 21 is arranged at the side edge of the supporting frame 22, the inner ring of the positioning ring 21 is matched with the outer wall surface of a positioning area A of a middle section barrel body 2, the two ends of the upper hoop 18 are detachably connected with the supporting frame 22, the rear section positioning device 14 is arranged at the rear end of the base 7, the structure of the rear section positioning device 14 is similar to that of the middle section positioning device 8, the difference lies in that the positioning ring of the rear section positioning device 14 is matched with the outer wall surface of a positioning area B of a rear section barrel body 3, and the positioning ring 21 of the middle section positioning device 8 is coaxial with that of the, the clamping mechanism I9 comprises an adjusting seat 31, an arc-shaped supporting block 25 which is arranged on the top surface of the adjusting seat 31 and is in contact with the outer wall surface of the cylinder body, and a steel belt 23 of which two ends are locked on the adjusting seat 31 and a top part of the adjusting seat and are in contact with the outer wall surface of the cylinder body, the structure of the clamping mechanism II 12 is similar to that of the clamping mechanism I9, and the differences are that the length of the arc-shaped supporting block 25 of the clamping mechanism I9 and the length of the steel belt 23 and the length of the arc-shaped supporting block of the clamping mechanism II 12 are respectively matched with the contact surface of the outer.
Two supports 20 are arranged at the top end of a support frame 22 of the middle section positioning device 8, a support lug of each support 20 is provided with a jack, two ends of an upper hoop 18 are provided with pin holes, and the upper hoop 18 is connected with the support frame 22 through a bolt 19.
An adjusting seat 31 of the clamping mechanism I9 is connected with a lead screw II 29 through a threaded hole at the bottom to form a nut lead screw kinematic pair, the lead screw II 29 limits displacement through a fixed seat 30 fixed on the base 7, and the lead screw II 29 drives the adjusting seat 31 and a top part thereof to realize left-right movement adjustment of the circle center of the arc-shaped supporting block 25; the adjusting seat 31 is provided with a screw I28, the screw I28 is provided with two sections of threads with different rotation directions, a pair of wedge blocks 27 are respectively screwed on the screw I28, the top surfaces of the wedge blocks 27 are made and are contacted with the wedge-shaped bottom surface of the sliding block 26, when the screw I28 rotates, the wedge blocks 27 approach or separate, the sliding block 26 moves up and down to adjust the up-and-down distance of the arc-shaped supporting block 25, and the screw I28 and the screw II 29 synchronously act to ensure that the arc-shaped supporting block 25 is in surface contact with the outer wall of the cylinder; after the adjustment is finished, the steel belt 23 is locked and fastened with the hanging buckle 24 arranged on the top surfaces of the adjusting seat 31 and the top part of the adjusting seat, so that the mounting hole can be effectively clamped to avoid shaking or vibration during processing.
Furthermore, the arc-shaped supporting block 25 and the steel belt 23 of the clamping mechanism I9 are arranged on the top surfaces of the adjusting seat 31 and the top part of the adjusting seat at intervals, and the arc-shaped supporting block and the steel belt of the clamping mechanism II 12 are arranged on the top surfaces of the adjusting seat and the top part of the adjusting seat at intervals.
Further, the processing positioning device further comprises an angular positioning mechanism 11 installed on one side of the base 7, the angular positioning mechanism 11 comprises a positioning pin 32, an installation seat 33 and a supporting seat 34, the positioning pin 32 is horizontally installed on the installation seat 33, the installation seat 33 is fixedly installed at the top of the supporting seat 34, the bottom of the supporting seat 34 is fixedly installed on the base 7, the height of the axis of the positioning pin 32 is equal to the central line formed by the center of the positioning ring of the middle section positioning device 8 and the positioning ring of the rear section positioning device 14, the barrel can be locked after the positioning pin 32 is inserted into the angular positioning hole 17 of the barrel, and the barrel is prevented from rotating along the virtual axis.
Further, processing positioner still includes strutting arrangement I10 and strutting arrangement II 13 of installing at base 7 opposite side, strutting arrangement I10 include arc supporting seat 35, transition piece 36, screw rod support 37, screw rod 38 and support body 39, support body 39 bottom install on base 7, support body 39 top adorn admittedly screw rod support 37, screw rod 38 spiro union be in screw rod support 37 on, screw rod 38 front end connect gradually transition piece 36 with arc supporting seat 35, strutting arrangement II 13 the structure with strutting arrangement I10 similar, the difference be in strutting arrangement I10 arc supporting seat 35 with strutting arrangement II's arc supporting seat's arc respectively with barrel outer wall contact surface phase-match. The supporting device I10 and the supporting device II 13 are arranged at the back parts of the cylinder main lifting lug mounting hole 15 and the tail hook mounting hole 16, so that the back support of the cylinder main lifting lug mounting hole 15 and the tail hook mounting hole 16 is realized; the center line formed by the center of the middle section positioning device 8 and the center of the rear section positioning device 14 is found, the height of the arc-shaped supporting seat 35 is adjusted and determined, the screw 38 is screwed into the screw support 37, then the screw 38 and the transition block 36 drive the arc-shaped supporting seat 35 to move to the side wall of the barrel body and be attached tightly, and the deformation influence of the cutting force on the thin-wall component is reduced when the main lifting lug mounting hole 15 and the tail hook mounting hole 16 are machined.
Furthermore, the parallelism between the upper surface of the base 7 as the mounting surface and the lower surface of the base 7 as the lower surface connected with the machine tool machining platform is less than 0.05 mm, and the base 7 is used as the reference of the whole machining positioning device, so that the clamping error of the cylinder in the machining process is reduced.
Furthermore, in order to simulate the central line of the excircle of the cylinder, after alignment adjustment is carried out on the platform by taking the installation surface of the base 7 as a reference, the coaxiality of the positioning ring 21 of the middle section positioning device 8 and the positioning ring of the rear section positioning device 14 is smaller than 0.2 mm.
Referring to fig. 11 and 12, the large thin-wall bellytank can be generally divided into a front section cylinder 1, a middle section cylinder 2, a rear section cylinder 3, a hanging rack 5 and the like, the hanging rack 5 is connected with the rear section cylinder through a main lifting lug 4 and a tail hook 6, through optimizing a process route, a mounting seat of the main lifting lug 4 and the tail hook 6 is welded firstly, 5mm allowance is reserved on the single side of a main lifting lug mounting hole 15 and a tail hook mounting hole 16 of the mounting seat, and an angular positioning hole 17 which is collinear with the circle center of the main lifting lug mounting hole 15 and the tail hook mounting hole 16 is added. Because the plane formed by the central lines of the main lifting lug mounting hole 15 and the tail hook mounting hole 16 has an error to the symmetry degree of the central line of the auxiliary oil tank, the central line of the auxiliary oil tank needs to be found before processing, because the deformation of the cylinder body of the auxiliary oil tank is large after welding, the simulation can not be realized at all with the whole appearance, only an area with small welding deformation influence or an area without welding can be selected as a simulation area, and simultaneously, in order to reduce the deflection error, the middle section positioning device 8 and the rear section positioning device 14 are respectively arranged at the front end and the rear end of the base 7, so that the distance between the two positioning devices is ensured, and the area with large welding influence on the cylinder body is also;
when the processing positioning device is used, a cylinder body of the large thin-wall auxiliary oil tank is placed into the positioning ring 21 of the middle section positioning device 8 and the positioning ring of the rear section positioning device 14, and then the positioning pin of the angular positioning mechanism is inserted into the angular positioning hole 17; then the upper hoop 18 is used for fastening and positioning; adjusting a screw I28 and a screw II 29 to ensure that the arc-shaped supporting block 25 is in surface contact with the outer wall of the cylinder body, and tensioning and fastening the steel belt 23; the adjusting screw 38 and the transition block 36 drive the arc-shaped support seat 35 to move to the side wall of the cylinder body and cling to the side wall of the cylinder body; the main shackle mounting holes 15 and the tail hook mounting holes 16 are machined to final dimensions. Therefore, by processing the positioning device, the influence caused by the error of the thin-wall cylinder and the welding error can be greatly avoided, the vibration problem of thin-wall processing is solved, and the requirements of the size precision and the form and position tolerance of the main lifting lug mounting hole 15 and the tail hook mounting hole 16 are ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a processing positioner of back end mounting hole in vice oil tank of large-scale thin wall which characterized in that: including base (7), adorn admittedly base (7) on middle section positioner (8), clamping mechanism I (9), clamping mechanism II (12) and back end positioner (14), middle section positioner (8) including last clamp (18), holding ring (21) and support frame (22), support frame (22) adorn the front end at base (7) admittedly, holding ring (21) install support frame (22) side, holding ring (21) inner ring and the outer wall phase-match of middle section barrel location region (A), last clamp (18) both ends detachable with support frame (22) connect, back end positioner (14) install the rear end at base (7), the structure of back end positioner (14) with middle section positioner (8) similar, the different outer wall that lies in the holding ring of back end positioner (14) and back section barrel location region (B) matches mutually The middle section positioning device (8) is coaxial with the rear section positioning device (14), the clamping mechanism I (9) comprises an adjusting seat (31), an arc-shaped supporting block (25) and a steel strip (23), the adjusting seat (31) and the top part of the adjusting seat (31) are arranged in, the arc-shaped supporting block (25) is in contact with the outer wall surface of the cylinder body, the two ends of the steel strip are fastened and locked on the adjusting seat (31) and the top part of the adjusting seat (31), the two ends of the steel strip are in contact with the outer wall surface of the cylinder body, the structure of the clamping mechanism II (12) is similar to that of the clamping mechanism I (9), and the difference is that the arc-shaped supporting block (25) and the steel strip (23) of the clamping mechanism I (9) and the arc-shaped supporting block and the steel strip length of the clamping mechanism II (12.
2. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank according to claim 1, characterized in that: two sets of arc-shaped supporting blocks and steel belts of the clamping mechanism I (9) and the clamping mechanism II (12) are arranged on the top surface of the adjusting seat at intervals.
3. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank as claimed in claim 2, wherein: the positioning device is characterized by further comprising an angular positioning mechanism (11) installed on one side of the base (7), wherein the angular positioning mechanism (11) comprises a positioning pin (32), an installation seat (33) and a supporting seat (34), the positioning pin (32) is horizontally installed on the installation seat (33), the installation seat (33) is fixedly installed at the top of the supporting seat (34), the bottom of the supporting seat (34) is fixedly installed on the base (7), and the height of the axis of the positioning pin (32) is equal to the height of the center line formed by the center of the positioning ring of the middle section positioning device (8) and the center of the positioning ring of the rear section positioning device (14).
4. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank as claimed in claim 3, wherein: also comprises a supporting device I (10) and a supporting device II (13) which are arranged on the other side of the base (7), the supporting device I (10) comprises an arc-shaped supporting seat (35), a transition block (36), a screw rod supporting seat (37), a screw rod (38) and a frame body (39), the bottom end of the frame body (39) is arranged on the base (7), the top end of the frame body (39) is fixedly provided with the screw rod support (37), the screw rod (38) is screwed on the screw rod support (37), the front end of the screw rod (38) is sequentially connected with the transition block (36) and the arc-shaped support seat (35), the structure of the supporting device II (13) is similar to that of the supporting device I (10), and the difference is that the arcs of the arc-shaped supporting seats (35) of the supporting device I (10) and the supporting device II (13) are respectively matched with the contact surface of the outer wall of the cylinder body.
5. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank as claimed in claim 4, wherein: the parallelism between the upper surface of the base (7) as a mounting surface and the lower surface of the base as a surface connected with a machine tool machining platform is less than 0.05 mm.
6. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank according to claim 1, characterized in that: the coaxiality of the positioning ring (21) of the middle section positioning device (8) and the rear section positioning device (14) is less than 0.2 mm.
7. The machining and positioning device for the rear-section mounting hole in the large thin-wall auxiliary oil tank according to claim 5, characterized in that: the coaxiality of the positioning ring (21) of the middle section positioning device (8) and the rear section positioning device (14) is less than 0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295125.3A CN112404880A (en) | 2020-11-18 | 2020-11-18 | Machining and positioning device for rear-section mounting hole in large thin-wall auxiliary oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295125.3A CN112404880A (en) | 2020-11-18 | 2020-11-18 | Machining and positioning device for rear-section mounting hole in large thin-wall auxiliary oil tank |
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| Publication Number | Publication Date |
|---|---|
| CN112404880A true CN112404880A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011295125.3A Pending CN112404880A (en) | 2020-11-18 | 2020-11-18 | Machining and positioning device for rear-section mounting hole in large thin-wall auxiliary oil tank |
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| CN (1) | CN112404880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211363A (en) * | 2021-05-14 | 2021-08-06 | 天津爱思达新材料科技有限公司 | Thin-wall auxiliary oil tank assembling device and method |
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2020
- 2020-11-18 CN CN202011295125.3A patent/CN112404880A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211363A (en) * | 2021-05-14 | 2021-08-06 | 天津爱思达新材料科技有限公司 | Thin-wall auxiliary oil tank assembling device and method |
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