CN113714836A - High-precision alloy shell hole aligning machining system and method - Google Patents
High-precision alloy shell hole aligning machining system and method Download PDFInfo
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- CN113714836A CN113714836A CN202111001779.5A CN202111001779A CN113714836A CN 113714836 A CN113714836 A CN 113714836A CN 202111001779 A CN202111001779 A CN 202111001779A CN 113714836 A CN113714836 A CN 113714836A
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- 239000000956 alloy Substances 0.000 title claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 25
- 238000003754 machining Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000003672 processing method Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000035882 stress Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
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- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
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- Jigs For Machine Tools (AREA)
Abstract
The invention belongs to the technical field of equipment or methods for boring holes in high-precision planes, and discloses a system and a method for processing holes in a high-precision alloy shell. The machining system comprises a machining center and a clamp arranged on the machining center, the clamp comprises an installation base plate and a positioning reference seat arranged on the installation base plate, a shaft hole positioning column is coaxially arranged on the positioning reference seat, and a plurality of air tightness detection holes are formed in the periphery of the shaft hole positioning column on the positioning reference seat; and a pressing device for pressing the shell is arranged on the periphery of the positioning reference seat on the mounting bottom plate. The processing method comprises the steps of installing a shell blank to be processed on a clamp, and accurately positioning and clamping the shell blank by using the clamp; and then pre-drilling, boring and reaming to finish hole machining. The invention solves the problem that the shell cannot be accurately positioned only by fixing the shell on the turning center through the elastic expansion sleeve positioning clamp in the prior art, so that the hole aligning error after processing is larger.
Description
Technical Field
The invention belongs to the technical field of equipment or methods for boring holes in high-precision planes, and particularly relates to a system and a method for processing holes in a high-precision alloy shell.
Background
When the high-precision alloy shell is used, two positioning pin holes need to be machined, and usually, the two positioning pin holes are machined by clamping a shell blank on a turning center and then starting a cutter of the turning center to machine the two positioning pin holes on the end face of the shell blank. At present, the shell is clamped on a turning center through an elastic expansion sleeve positioning clamp, so that a product cannot be accurately positioned, and the machining precision of a positioning pin hole is low.
Disclosure of Invention
The invention aims to provide a high-precision hole-aligning processing system and method for an alloy shell, and aims to solve the problem that in the prior art, the shell is fixed on a turning center through an elastic expansion sleeve positioning clamp, so that the shell cannot be accurately positioned, and the processed hole-aligning error is large.
In order to achieve the purpose, the invention provides the following technical scheme that the hole aligning processing system for the high-precision alloy shell comprises a processing center and a clamp arranged on the processing center, wherein the clamp comprises an installation bottom plate and a positioning reference seat arranged on the installation bottom plate, a shaft hole positioning column is coaxially arranged on the positioning reference seat, and a plurality of air tightness detection holes are formed in the periphery of the shaft hole positioning column on the positioning reference seat; and a pressing device for pressing the shell is arranged on the periphery of the positioning reference seat on the mounting bottom plate.
The technical principle of the technical scheme is as follows:
placing the shell to be processed on a positioning reference seat, inserting the shaft hole positioning column into the shell, and positioning the shell blank; and the shell blank is compressed by the compression piece, so that the fixation of the shell blank can be completed. Then, the air tightness detection hole is ventilated, the gas leakage amount in unit time is detected, if the gas leakage amount is large, dust or impurities exist between the end face of the shell blank and the positioning reference seat, the Z-direction verticality between the shell plane and the equipment is poor, and the clamping precision is low; if the gas leakage amount in unit time is small, the plane of the shell is tightly attached to the positioning reference seat, and the clamping precision is high.
The beneficial effects of the technical scheme are as follows:
1. compared with the traditional turning center, the technical scheme improves the repeated positioning precision of the equipment, increases the rigidity of the main shaft and the heat balance capability of the system, and can improve the position precision of a product by phi 0.008-0.015 mm;
2. according to the technical scheme, the coaxial shaft hole positioning columns are arranged on the positioning reference seat, so that the clamping of the shell blank can be limited and guided, the shell blank is clamped in place, the clamping precision is improved, and the precision is higher during hole aligning processing;
3. according to the technical scheme, the positioning reference seat is provided with the air tightness detection hole, and when the shell blank is clamped, the end face of the shell blank covers the air tightness detection hole, so that whether a gap exists between the positioning reference seat and the end face of the shell blank or not can be judged by detecting the air suction amount in unit time, and the clamping precision is adjusted to ensure that the highest clamping precision is achieved;
4. according to the technical scheme, the clamping position of the shell blank is determined through the shaft hole positioning column, and the shell blank is compressed through the matched compression piece, so that the accurate clamping of the shell blank can be completed, and the operation is convenient.
In conclusion, the technical scheme can finish the rapid and high-precision clamping of the shell blank, and after the clamping, the clamping precision can be detected and adjusted, so that the clamping precision of the shell blank is further improved, and the high precision of the processed hole can be ensured.
Furthermore, the positioning reference seat is provided with lugs the number of which is consistent with that of the air tightness detection holes, and the air tightness detection holes are formed in the lugs.
Has the advantages that: the lug is arranged to lift the whole shell blank upwards, so that most of the end face of the shell blank is separated from the positioning reference seat, and the whole shell blank can be accurately clamped only by accurately assembling the part in contact with the lug. Through the mode that reduces the contact, can be better adjust the clamping precision, and then promote the clamping and be the efficiency of adjustment.
And when clamping, the shell blank also can cover the air tightness detection hole, thereby finishing adjusting the clamping accuracy.
Furthermore, one of the bumps is provided with an anti-rotation positioning pin.
Has the advantages that: when the clamping is carried out, the anti-rotation positioning pin is inserted into a pin hole in the end face of the shell blank, the position of the shell blank is limited, meanwhile, the shell blank can be prevented from rotating when being processed, and then the precision of hole aligning processing is improved.
Furthermore, an error-proofing block is further arranged on the mounting bottom plate, and an error-proofing groove matched with the shell to be processed is formed in one side, close to the positioning reference seat, of the error-proofing block.
Has the advantages that: when the shell blank is clamped, the convex part outside the shell blank is arranged in the error-proofing groove, the clamping position of the shell blank is rapidly determined, the error-proofing condition is avoided, and the subsequent hole-aligning processing precision is improved. And the clamping position of the shell blank can be rapidly determined, so that the clamping efficiency is improved.
Furthermore, a plurality of limiting blocks are further arranged on the mounting bottom plate, and one side, close to the positioning reference seat, of each limiting block is arc-shaped.
Has the advantages that: when the shell blank is clamped, one side of the limiting block, which is close to the positioning reference seat, can be tightly attached to the outer wall of the shell blank, and then limiting and protecting of the shell blank are completed.
Furthermore, the shaft hole positioning column comprises a positioning column section at the upper part and a transition section at the lower part, the small-diameter end of the positioning column section and the small-diameter end of the transition section are coaxially fixed, the diameter of the positioning column section is consistent with that of the small-diameter end of the transition section, and the periphery of the transition section is provided with a screw connecting hole in the inner wall of the shell.
Has the advantages that: the positioning column section can guide the installation of the shell blank, when the shell blank moves to the transition section, the shell is continuously guided through the gradually increased diameter of the transition section until the installation of the shell blank is finished, and the inner wall of the shell blank is attached to the bottom of the transition section; simultaneously, the setting of cooperation screw connecting hole can utilize the screw to lock the casing, further improves the effect of installation, ensures that the precision of casing clamping is higher, and then promotes the follow-up precision of processing to the hole.
The invention also provides another technical scheme, in particular to a hole-aligning processing method for a high-precision alloy shell, which comprises the steps of installing a shell blank to be processed on a clamp, and accurately positioning and clamping the shell blank by using the clamp; and then pre-drilling, boring and reaming to finish hole machining.
The hole aligning machining system is used for machining the hole on the shell by utilizing the high-precision alloy shell, so that the high-precision alloy shell can accurately clamp a shell blank by using a clamp of the hole aligning machining system, and then pre-drilling, boring and reaming are carried out, and the machining hole aligning precision is high.
Further, the case blank is formed by vacuum extrusion.
Has the advantages that: through vacuum extrusion's mode, can prevent that gas pocket and shrinkage cavity from appearing in the internal structure to ensure that the density of foundry goods internal structure is high, improve the intensity of fashioned casing blank, and then promote life. Therefore, when hole aligning machining is carried out, the problems of air holes and shrinkage holes in the tissue can be avoided, cutter vibration and cutter back-off caused by the air holes and the shrinkage holes in the tissue can be avoided, the hole aligning machining precision is improved, and the product quality is improved.
Further, after the shell blank is molded, aging treatment is performed.
Has the advantages that: carry out ageing treatment to fashioned casing blank, place a period of time after, can release inside stress, avoid adding man-hour to the hole, because of the existence of internal stress leads to the condition appearance of product deformation, avoid causing the influence to the precision and the quality of product.
Further, before hole aligning, the machining center is started, and the machining center is warmed for more than 30 min.
Has the advantages that: the machining center is warmed, so that the influence on the hole machining precision due to the situations of blockage, unsmooth and the like when the equipment is just started can be avoided; after the machining center runs stably, the shell blank can be subjected to hole machining, and high machining precision is ensured. And utilize the casing clamping after the processing to carry out the heat engine on the furniture, the feed rate of cutter is through setting for, and when the heat engine, the cutter can normal removal, operation, but can not contact with the casing after the processing is accomplished again, can avoid the casing after the processing impaired.
Drawings
FIG. 1 is a schematic view of a jig used in the present invention;
FIG. 2 is a schematic structural view of a shell blank machined in accordance with the present invention;
fig. 3 is a schematic structural diagram of a housing blank after hole machining is completed.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the anti-rotation positioning device comprises an installation bottom plate 1, a positioning reference base 2, a shaft hole positioning column 3, a screw connecting hole 4, a convex block 5, an air tightness detection hole 6, an anti-rotation positioning pin 7, a supporting table 8, a pressing block 9, an anti-error block 10, an anti-error groove 11, a limiting block 12, a shell 13, a pin hole 14, a reference plane 15, a reference hole 16 and a hole 17.
Example (b):
the utility model provides a high accuracy alloy casing is to hole system of processing, includes machining center and sets up the anchor clamps on machining center, and machining center chooses for use. As shown in fig. 1, the jig includes a mounting base plate 1 and a positioning reference base 2 provided on the mounting base plate 1, and the mounting base plate 1 is fixed to a machining center by bolts.
The upper surface of the positioning reference seat 2 is coaxially fixed with a shaft hole positioning column 3, the shaft hole positioning column 3 comprises an upper positioning column section and a lower transition section, the positioning column section is coaxially fixed with the small-diameter end of the transition section, and the diameter of the positioning column section is consistent with that of the small-diameter end of the transition section. A plurality of screw connecting holes 4 are uniformly arranged on the lower portion of the transition section along the circumferential direction, the number of the screw connecting holes 4 can be set according to actual requirements, and four screw connecting holes 4 are arranged in the embodiment. After the housing 13 is mounted, the screw is screwed into the screw attachment hole 4, whereby the housing 13 can be fixed.
A plurality of lugs 5 are arranged on the outer ring of the shaft hole positioning column 3 on the positioning reference seat 2, the number of the lugs 5 is set according to actual requirements, in the embodiment, four lugs 5 are arranged, the positions of the four lugs 5 are matched with the positions of pin holes 14 arranged on the end face of the shell 13, and when the shell 13 is clamped on the positioning reference seat 2, the four positions of the shell 13 provided with the pin holes 14 can just cover the four lugs 5. An anti-rotation positioning pin 7 matched with the pin hole 14 is arranged on the right lug 5; the tops of the four bumps 5 are provided with air tightness detection holes 6, and air suction parts (such as air extractors) are communicated with the air tightness detection holes 6, so that air suction can be completed.
The periphery that lies in location reference seat 2 on mounting plate 1 is provided with the piece that compresses tightly, and the piece that compresses tightly includes supporting bench 8 and rotates the compact heap 9 of connecting in supporting bench 8 in this embodiment, is provided with driven revolving cylinder in the supporting bench 8. The quantity that compresses tightly the piece sets up according to the actual demand, is provided with 3 in this embodiment and compresses tightly the piece, and 3 compress tightly the top that the piece is located lug 5 respectively.
An error-proofing block 10 is further arranged on one side, located on the positioning reference base 2, of the mounting base plate 1, and an error-proofing groove 11 is formed in one side, close to the positioning reference base 2, of the error-proofing block 10; when the housing 13 is clamped, the convex part on the outer side of the housing 13 can be placed in the error-proof groove 11, and the position of the end face of the housing 13 provided with the pin hole 14 just covers the four lugs 5.
Still be provided with two stopper 12 on mounting plate 1, stopper 12 is higher than 2 tops of location reference base including fixing the vertical portion on mounting plate 1 and fixing the horizontal portion on vertical portion top, and the bottom of horizontal portion and the top of lug 5 are located same horizontal plane, and horizontal portion is the arc towards one side of location reference base 2, can paste mutually with the outside of casing 13.
The cutter bar and the cutter handle of the cutter used in the machining center adopt an integral structure, so that the rigidity of the cutter can be improved, and the radial vibration of the cutter point and cutter back-off are reduced. The main deflection angle of the cutting edge is 90 degrees, so that the radial cutting force borne by the main cutting edge is 0, and the radial component force borne by the tool nose is reduced.
A hole-aligning processing method for a high-precision alloy shell, which is used for processing a hole 17 by a hole-aligning processing system, comprises the following steps:
step one, forming a shell blank
The housing blank is cast by vacuum die casting plus extrusion. A shell blank with higher density can be obtained through vacuum die casting, and air holes and shrinkage cavities in the internal structure are prevented; meanwhile, extrusion forming is added, the tissue density of the shell blank is higher, the strength of the shell can be obviously improved, and the gradual later-stage deformation is reduced.
Step two, aging treatment
The formed shell blank is placed for a period of time and subjected to aging treatment, the internal structure stress of the shell blank is eliminated, and the problems of deformation and precision reduction caused by gradual release of the internal stress of the shell blank after machining are avoided.
Step three, equipment temperature machine
And (3) the machining center is heated for more than 30min according to the machining requirements, so that the repeated positioning precision of the bearing, the screw rod gap and the machining center is in the optimal thermal balance state.
Step four, processing the reference plane and the positioning hole
After the warm machine is completed, the housing blank is machined with the reference plane 15, the reference hole 16 and the pin hole 14 by using a machining center.
Step five, clamping the shell
Mounting the housing 13 by using a jig, as shown in fig. 2, facing a reference plane 15 of the housing 13 provided with four pin holes 14 to the positioning reference base 2, and inserting the shaft hole positioning post 3 into a reference hole 16 of the housing 13 so that a convex portion outside the housing 13 is positioned in the error preventing groove 11; through the limit of the anti-error groove 11, four positions of the reference plane 15 of the shell 13, which are provided with the pin holes 14, are covered on the bump 5, and meanwhile, the anti-rotation positioning pin 7 is inserted into one of the pin holes 14, so that the placement of the shell 13 is completed. After the shell 13 is placed on the positioning reference base 2, screws are screwed into the screw connecting holes 4, and the shell is limited. And then the rotary cylinder is started to drive the pressing block 9 to move, so that the shell 13 is pressed and fixed on the clamp.
After the housing 13 is completely mounted, the air tightness detecting hole 6 is blown, and it is determined whether the reference plane 15 on the housing 13 is completely in contact with (i.e., completely attached to) the plane of the bump 5 according to the amount of the blown air. When the amount of gas blown out through the gas-tightness detection hole 6 is large, it means that dust or impurities are present between the flat surface of the bump 5 and the reference flat surface 15 of the case 13, and the mounting accuracy is low, and therefore, it is necessary to clean the surface of the bump 5 and clamp it again. If the amount of gas blown out through the gas-tightness detection hole 6 is small, it means that the reference plane 15 of the housing 13 and the plane of the bump 5 are in close contact with each other, and the clamping accuracy is high, so that the positioning and clamping of the housing 13 by the "one-side-two-pin" are completed.
Step six, hole aligning processing
After the housing 13 is clamped, the machining center is started, and the housing 13 is pre-drilled, bored and reamed in sequence, so that the hole 17 shown in fig. 3 is formed in the housing 13, and the machining of the hole 17 is completed.
According to the invention, through improving the cutter, the extrusion amount of the shell 13 during processing of the hole 17 can be reduced, so that the heat generated by mutual friction between the cutter and the shell 13 is reduced, the deformation of the shell 13 is reduced, and the processing precision is further improved. Meanwhile, because the air holes and shrinkage holes of the internal structure of the shell 13 are few, the vibration and cutter back-off of a cutter during the processing of the hole 17 can be reduced, and the influence on the quality of the shell 13 is reduced.
According to the invention, through improving the clamp, the mode of 'one-side two-pin' positioning, three-point supporting and three-point pressing is used, so that the supporting point and the pressing point are at the same position, the positioning is ensured to be correct, the clamping is reliable, the pressing deformation is prevented, and the clamping precision is improved.
The configuration mistake proofing structure (mistake proofing piece 10 and mistake proofing groove 11) makes the bulge of casing 13 can only be located mistake proofing groove 11, otherwise casing 13 can't be packed into the anchor clamps, can avoid the condition that casing 13 is loaded in mistake to appear. In addition, by the mode, the shell 13 can be clamped quickly, and the clamping efficiency can be obviously improved.
After the clamping is completed, whether the reference plane 15 on the shell 13 is completely contacted with the bump 5 can be detected by arranging the air tightness detection hole 6 on the bump 5. If the reference plane 15 on the shell 13 is completely contacted with the bump 5, the air tightness detection is qualified, and the equipment starts to operate; otherwise, the equipment alarms and cannot start to run; the hole system of the housing is ensured to be vertical to the reference plane 15 of the housing 13 during processing, and the position precision of the processing hole 17 is improved.
Through improving the processing method, the air holes and shrinkage cavities of the internal structure of the formed shell 13 can be reduced, the density of the internal structure is further improved, the vibration and cutter back-off of a cutter during hole 17 processing are reduced, and the precision of hole 17 processing is improved. And the precision of subsequent hole 17 processing can be improved through aging treatment and heat engine steps.
In summary, the hole-aligning processing system for the high-precision alloy housing and the hole-aligning processing method for the high-precision alloy housing are improved, so that the position accuracy of the processed housing 13 can be improved. The position precision of the shell 13 can be improved to phi 0.005-0.008mm by improving the cutter; through the improvement of the clamp, the position precision of the shell 13 can be improved by phi 0.007-0.010 mm; the original turning center is replaced by a machining center, so that the position precision of the shell 13 can be improved to phi 0.008-0.015 mm; through the cooperation of the system and a processing method (vacuum casting, aging treatment, equipment temperature machine, and improvement of a clamp and a cutter), the position precision of the shell can be improved by phi 0.012-0.018 mm.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications should not be construed as affecting the performance of the invention and its practical application.
Claims (10)
1. The utility model provides a high accuracy alloy casing is to hole system of processing which characterized in that: the fixture comprises an installation base plate and a positioning reference seat arranged on the installation base plate, wherein a shaft hole positioning column is coaxially arranged on the positioning reference seat, and a plurality of air tightness detection holes are formed in the positioning reference seat and positioned on the periphery of the shaft hole positioning column; and a pressing device for pressing the shell is arranged on the periphery of the positioning reference seat on the mounting bottom plate.
2. A high precision alloy housing hole aligning machining system as claimed in claim 1, wherein: the positioning reference seat is provided with lugs the number of which is consistent with that of the air tightness detection holes, and the air tightness detection holes are arranged at the lugs.
3. The high-precision alloy housing hole-aligning machining system of claim 2, wherein: one of the bumps is provided with an anti-rotation positioning pin.
4. The high-precision alloy housing hole-aligning machining system of claim 1, wherein: and an error-proofing block is further arranged on the mounting bottom plate, and an error-proofing groove matched with the shell to be processed is formed in one side, close to the positioning reference seat, of the error-proofing block.
5. The high-precision alloy housing hole-aligning machining system of claim 4, wherein: a plurality of limiting blocks are further arranged on the mounting bottom plate, and one side of each limiting block, which is close to the positioning reference seat, is arc-shaped.
6. The high-precision alloy housing hole-aligning machining system of claim 1, wherein: the shaft hole positioning column comprises a positioning column section at the upper part and a transition section at the lower part, the positioning column section is coaxially fixed with the small-diameter end of the transition section, the diameter of the positioning column section is consistent with that of the small-diameter end of the transition section, and the periphery of the transition section is provided with a screw connecting hole.
7. A high-precision alloy housing hole-aligning processing method using the high-precision alloy housing hole-aligning processing system according to any one of claims 1 to 6, characterized in that: mounting a shell blank to be processed on a clamp, and accurately positioning and clamping the shell blank by using the clamp; and then pre-drilling, boring and reaming to finish hole machining.
8. The method for hole-aligning a high-precision alloy housing according to claim 7, wherein: the shell blank is formed by vacuum extrusion.
9. The method for hole-aligning a high-precision alloy housing according to claim 8, wherein: and (5) after the shell blank is formed, carrying out aging treatment.
10. The method for hole-aligning a high-precision alloy housing according to claim 9, wherein: before hole aligning, a machining center is started, and the machining center is warmed for more than 30 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111001779.5A CN113714836A (en) | 2021-08-30 | 2021-08-30 | High-precision alloy shell hole aligning machining system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111001779.5A CN113714836A (en) | 2021-08-30 | 2021-08-30 | High-precision alloy shell hole aligning machining system and method |
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| CN113714836A true CN113714836A (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370980A (en) * | 2021-12-21 | 2022-04-19 | 江门逸和机电有限公司 | Clamp airtightness detection device and machine tool with same |
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Application publication date: 20211130 |