CN117681010B - A device for quick change of fixtures for milling and turning of thin-walled cylindrical parts. - Google Patents
A device for quick change of fixtures for milling and turning of thin-walled cylindrical parts.Info
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- CN117681010B CN117681010B CN202311704301.8A CN202311704301A CN117681010B CN 117681010 B CN117681010 B CN 117681010B CN 202311704301 A CN202311704301 A CN 202311704301A CN 117681010 B CN117681010 B CN 117681010B
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- China
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- milling
- fixture
- turning
- ring
- adapter sleeve
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Abstract
本发明属于机械加工技术领域，具体涉及一种用于车铣复合加工薄壁筒形零件夹具快速更换的装置。所述装置包括转接套、内卡环、外夹套、退料环、弹性圈。本发明具有夹具基准一致性高、操作易掌握、生产效率高的优点，可用于薄壁筒形类零件车铣复合加工夹具快速更换，解决车铣加工采用不同夹具存在的基准一致性差、过程调整繁琐和生产效率低的问题。
This invention belongs to the field of machining technology, specifically relating to a device for quick fixture change in milling and turning of thin-walled cylindrical parts. The device includes an adapter sleeve, an inner retaining ring, an outer clamping sleeve, a material ejector ring, and an elastic ring. This invention has the advantages of high fixture datum consistency, easy operation, and high production efficiency. It can be used for quick fixture change in milling and turning of thin-walled cylindrical parts, solving the problems of poor datum consistency, cumbersome process adjustments, and low production efficiency associated with using different fixtures in milling and turning processes.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a device for rapidly replacing a clamp for turning and milling a composite machining thin-wall cylindrical part.
Background
The processing method has the advantages that the processing method has the characteristics of high precision of the thin-wall cylindrical part, multiple elements of thin-wall and milling processing in the military and civil fields, the axial references of the processing and milling processing are the processing outer circle or inner hole serving as the center, the processing and milling processing references are unified in the processing, the processing by adopting independent processing and milling equipment is required to be carried out after the processing and milling are finished, the part is disassembled, and the part is transferred to the milling equipment for feeding and clamping again, so that the thin-wall cylindrical part has larger replacement error, long replacement period, influences the production efficiency, leads to low production efficiency and increases the production cost, and meanwhile, the processing quality of the thin-wall cylindrical part is ensured.
Taking a thin-wall cylindrical part as an example, the length of the thin-wall cylindrical part is 1620mm, the diameter phi is 160mm, the wall thickness of the pipe body is only 1.4mm, the hardness of the material is HRC 48-53, the coaxiality of turning is 0.05, and the milling of a welding accessory needs to ensure the high tolerance + -0.15 mm of the center and the symmetry is 0.1mm. The traditional method is to carry out machining by a separate turning and milling device, but the machining method has the following defects:
1) The turning and milling needs unified reference, and the thin-wall cylindrical part is easy to overlap errors and has poor size or size stability due to the fact that the thin-wall cylindrical part is processed on two machine tools.
2) And the two machine tools are processed, so that the replacement period is long, and the production cost is increased.
Therefore, in order to solve the problems in the prior art, it is necessary to develop a device for rapidly replacing the fixture for turning and milling the composite processing thin-walled cylindrical part.
Disclosure of Invention
The invention aims at the defects of the prior art and provides a turning and milling combined machining device for thin-wall cylindrical parts, which realizes the unification of machining references of turning and milling on turning and milling combined machining equipment and the rapid replacement of turning and milling clamps through a fixture rapid replacement device. The clamping precision and the reference consistency of turning and milling processing are improved, the processing precision is improved, and the replacement time is reduced.
The technical scheme adopted by the invention is as follows:
The invention provides a device for rapidly replacing a turning and milling composite machining clamp of a thin-wall cylindrical part, which comprises an adapter sleeve 1, an inner clamping ring 2, an outer jacket 3, a material returning ring 4 and an elastic ring 5;
The adapter sleeve 1 is a main body support of the clamp, and a hollow cavity matched with the clamp and the power turntable is arranged in the middle; the large end face of the adapter sleeve 1 is assembled with the matched end face of the power turntable through a plurality of connecting pieces, and the position precision of the adapter sleeve 1 is controlled through the tightening moment adjustment of each angular connecting piece, so that conical holes at the matched positions of the power turntable of the adapter sleeve 1 and the turning and milling combined machining equipment are coaxial with the inner holes at the end, far away from the power turntable, of the adapter sleeve, and the reference is converted to ensure that the center of the power turntable is coaxial with the inner holes at the end, far away from the power turntable, of the adapter sleeve 1;
The inside of the outer jacket 3 is provided with a jacket connecting part matched with the adapter sleeve 1, the inner clamping ring 2 and the clamp body, and the outer side of the outer jacket is provided with a wrench groove for disassembly, the adapter sleeve 1 is matched and connected with the connecting part of the outer jacket 3, the inner clamping ring 2, the clamp body, the outer clamping ring 3 and the elastic ring 5 are positioned in the annular hole inside the outer jacket 3, the inner clamping ring 2 is fixed in a limit groove of the clamp body, the outer diameter position of the inner clamping ring 2 is provided with an annular groove for the elastic ring 5 to be sleeved and limited, the matched elastic ring 5 is arranged in the annular groove position, and the fixing of the inner clamping ring 2 in the limit groove of the clamp for turning or milling is realized through the elastic force of the elastic ring 5;
The outer jacket 3 is screwed by a hook wrench to realize the installation and fixation of the turning or milling clamp, and the inner taper hole of the adapter sleeve 1 is assembled with the turning or milling clamp to realize the fixation and reference conversion of the turning or milling clamp when the turntable rotates;
The material returning ring 4 is provided with a notch in the appearance structure, so that the material returning ring is convenient to take away or put into a designated position at any time, when the outer jacket 3 and the adapter sleeve 1 are loosened, the material returning ring 4 has the functions of pushing the turning or milling clamp and unloading, and the contact area of the outer jacket 3 and the clamp body is increased, so that the stress is uniform.
Preferably, the inner hole at one end of the adapter sleeve 1 far away from the power turntable adopts a Morse taper hole, so that the precision and the self-locking performance of static fit are improved conveniently.
Preferably, the inner clamping ring 2 is of a splicing structure, and is spliced into a complete clamping ring through two semicircular clamping rings.
Further, the inner diameter of the spliced inner clamping ring 2 is slightly larger than the outer diameter of the limit groove of the turning or milling clamp by 0.2-0.3 mm and smaller than the inner hole of the matched position of the outer jacket by 0.2-0.3 mm.
Preferably, the elastic ring 5 is an O-shaped sealing ring, and is made of a silicone rubber material, so that the elastic ring is good in elasticity and has a certain fatigue strength, and plastic deformation is not easy to generate.
Further, the large diameter of the O-shaped sealing ring elastic ring 5 is 90-95% of the diameter of the annular groove of the inner clamping ring, and after the O-shaped sealing ring 5 is arranged in the annular groove at the outer diameter position of the inner clamping ring, the elastic ring 5 is ensured to lock the inner clamping ring 2 under static state. The outer diameter of the elastic ring is smaller than the maximum outer diameter of the inner clamping ring 2, so that the outer diameter position assembly of the outer jacket 1 and the inner clamping ring 2 is prevented from being influenced.
Preferably, the material returning ring 4 is in a U-shaped appearance, is in an inverted U-shaped shape when placed, is convenient to take away or place in a designated position at any time according to operation requirements, the length of a straight line section of the U-shaped is not less than the diameter of an arc section of the U-shaped, and the inner diameter of the arc section of the U-shaped is 0.3-0.5 mm greater than the diameter of a clamp at a corresponding matching position.
Preferably, the large end surface of the adapter sleeve 1 is assembled with the matched end surface of the power turntable through a plurality of screws or bolts.
Preferably, the external connection part of the adapter sleeve 1 is an external thread, and the connection part of the multi-step annular hole of the outer jacket 3 and the adapter sleeve 1 is provided with a matched internal thread.
In a second aspect, the present invention provides a method for using the device for rapidly replacing a turning and milling composite machining fixture for a thin-walled cylindrical part according to the first aspect, which specifically includes the following steps:
S1, assembling an adapter sleeve 1 and a power turntable of a turning and milling composite processing device, sleeving an outer jacket 3 at a taper shank position of a clamp body, mounting an inner clamping ring 2 into a limit groove at the taper shank position of the clamp body and realizing radial fixation through an elastic ring 5, mounting the inner clamping ring 2 into the outer jacket 3 after fixing, mounting the clamp body provided with the inner clamping ring 2, the outer jacket 3 and the elastic ring 5 into the adapter sleeve 1, and screwing the outer jacket 3 through a hook wrench to realize mounting and fixing of a turning or milling clamp;
S2, starting first turning or milling;
S3, when the clamp is required to be replaced after the turning or milling process is completed, a material returning ring 4 is placed in the middle neck of the clamp body, the outer jacket 3 and the adapter sleeve 1 are loosened through a hook wrench, the material returning ring 4 pushes the turning or milling clamp to be detached, the clamp is opened, the inner clamping ring 2 is detached, the outer jacket 3 is detached, after the clamp is replaced, the outer jacket 3 is sleeved into the taper shank of the clamp body, the assembly process is started, and therefore the whole device is used.
The invention has the beneficial effects that:
1) The invention has simple operation, the clamp is automatically centered through the taper hole, and the centering dimensional stability is high;
2) The standard consistency of the turning and milling clamp is ensured through the device for rapidly replacing the clamp;
3) The requirement on the skill level of the loading and unloading clamp of an operator is low, so that the handling clamp is convenient to master quickly in actual operation;
4) Utilize to collude spanner realization assembly and dismantlement, the operation is comparatively light, and it is convenient that it is quick to relate to turning, milling fixture change, production efficiency is high.
Drawings
FIG. 1 is a block diagram of the device for rapidly replacing a turning and milling composite machining clamp for a thin-walled cylindrical part.
Fig. 2 is a block diagram of an adapter sleeve of the present invention.
FIG. 3 is a diagram of the structure of the outer jacket of the present invention;
A front view, a B view, and a A view.
FIG. 4 is a block diagram of an inner race of the present invention;
a front view, a side view, a partial enlarged schematic view.
Detailed Description
The present invention will be further described in detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be noted that the present invention is not limited to the following examples.
Example 1
The device comprises an adapter sleeve 1, two inner clamping rings 2, an outer jacket 3, a material returning ring 4 and an elastic ring 5, wherein an auxiliary tool used in the using process of the clamp is a hook wrench, the adapter sleeve and a power turntable of the turning and milling composite machining device are assembled, the outer jacket 3 is sleeved into a clamp body taper shank, the two inner clamping rings 2 are elastically fixed through the elastic ring 5 and then are installed into clamping grooves at the position of the clamp body taper shank and are installed into the outer jacket 3, the clamp bodies provided with the inner clamping rings 2, the outer jacket 3 and the elastic ring 5 are installed into the adapter sleeve 1, the outer jacket 3 is screwed by the hook wrench to realize the installation and fixation of the turning or milling clamp, and the static fit and self-locking of the turning or milling clamp on the adapter sleeve 1 are realized.
The adapter sleeve 1 is a main body support of the whole clamp, one end of the adapter sleeve is matched with a power turntable of the turning and milling combined machining device, an assembly interface is arranged on the outer circle of an inner hole at one end far away from the power turntable, the inner hole is matched with the turning or milling clamp, and the outer circle is matched with the outer jacket 3.
The large end face of the adapter sleeve 1 is assembled with the matched end face of the power turntable through bolts or screws, and the position accuracy of the adapter sleeve is adjusted and controlled through tightening torque of each angular bolt or screw.
The taper hole at the matching position of the power turntable of the turning and milling combined machining device and the inner hole at one end of the power turntable far away from the power turntable of the power turntable 1 are coaxial, so that the reference is converted to ensure that the center of the power turntable and the inner hole at one end of the power turntable far away from the power turntable of the power turntable 1 are coaxial.
The inner hole at one end of the adapter sleeve 1 far away from the power turntable adopts a Morse taper hole, so that the precision and the self-locking performance of static fit are improved conveniently.
The adapter sleeve 1 is in threaded fit with the outer jacket 3, the two inner clamping rings 2, the elastic ring 5, the clamp body and the outer jacket 3 are matched, and the outer jacket 3 is screwed up through a hook wrench to realize the installation and fixation of a turning or milling clamp.
The inner diameter of the two inner clamping rings 2 after being spliced into a complete clamping ring is larger than the outer diameter of a limit groove of a turning or milling clamp, and the outer diameter of the two inner clamping rings 2 after being spliced into a complete clamping ring is smaller than the inner hole of the matched position of the outer jacket 3.
The outer diameter positions of the two inner clamping rings 2 are provided with annular grooves for limiting the elastic ring 5. The elastic ring 5 is arranged in an annular groove at the outer diameter position of the inner clamping ring 2, so that the radial fixing function of the inner clamping ring 2 in a limit groove of a turning or milling clamp is realized.
The material returning ring 4 has a U-shaped appearance structure, can be taken away or put into a designated position at any time, and has the function of pushing the turning or milling clamp to be detached when the outer jacket 3 and the adapter sleeve 1 are loosened by screw thread rotation.
The outer jacket 3 is sleeved into the taper shank of the clamp body, the two inner clamping rings 2 are arranged in clamping grooves at the taper shank position of the clamp body and are radially fixed through the elastic ring 5, the two inner clamping rings 2 are arranged in the outer jacket 3 after being fixed, the clamp body provided with the inner clamping rings 2, the outer jacket 3 and the elastic ring 5 is arranged in the adapter sleeve 1, the outer jacket 3 is screwed by a hook wrench to realize the installation and fixation of a turning or milling clamp, and the static fit and self-locking of the turning or milling clamp on the adapter sleeve 1 are realized.
Referring to fig. 1, the quick replacing device for the turning and milling composite machining clamp manufactured by the integral structure diagram of the invention comprises an adapter sleeve 1, two inner clamping rings 2, an outer jacket 3, a material returning ring 4 and an elastic ring 5. The power turntable of the adapter sleeve and turning and milling combined machining equipment is assembled, the outer jacket 3 is sleeved into a taper shank of the clamp body, the two inner clamping rings 2 are installed in clamping grooves in the taper shank position of the clamp body and are radially fixed through the elastic rings 5, the two inner clamping rings 2 are installed in the outer jacket 3 after being fixed, the clamp body provided with the inner clamping rings 2, the outer jacket 3 and the elastic rings 5 is installed in the adapter sleeve 1, the outer jacket 3 is screwed by a hook spanner to realize the installation and fixation of a turning or milling clamp, when the clamp needs to be replaced in the turning or milling working procedure, the material returning ring 4 is placed in the middle neck of the clamp body, the threads of the outer jacket 3 and the adapter sleeve 1 are loosened by the hook spanner, the material returning ring 4 pushes the turning or milling clamp and removes the clamp, the inner clamping rings 2 are opened and removed, and the outer jacket 3 is removed. After the clamp is replaced, the outer jacket 3 is sleeved into the taper shank of the clamp body to start the assembly process, so that the whole device is used.
Two inner clamping rings 2, an outer jacket 3 and an elastic ring 5 can be matched with each turning or milling clamp, so that the working procedures of opening and detaching the inner clamping rings 2 and detaching the outer jacket 3 after detaching the turning or milling clamp can be saved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311704301.8A CN117681010B (en) | 2023-12-12 | A device for quick change of fixtures for milling and turning of thin-walled cylindrical parts. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311704301.8A CN117681010B (en) | 2023-12-12 | A device for quick change of fixtures for milling and turning of thin-walled cylindrical parts. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117681010A CN117681010A (en) | 2024-03-12 |
| CN117681010B true CN117681010B (en) | 2026-05-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205927268U (en) * | 2016-08-10 | 2017-02-08 | 福州大学 | Mill magic chuck |
| CN108789858A (en) * | 2018-06-29 | 2018-11-13 | 中国船舶重工集团公司第七0七研究所 | High-precision hard brittle material coil rack turning-milling complex processing technique and tooling |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205927268U (en) * | 2016-08-10 | 2017-02-08 | 福州大学 | Mill magic chuck |
| CN108789858A (en) * | 2018-06-29 | 2018-11-13 | 中国船舶重工集团公司第七0七研究所 | High-precision hard brittle material coil rack turning-milling complex processing technique and tooling |
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