CN217316950U - High-precision disc type thin-wall part clamping fixture - Google Patents
High-precision disc type thin-wall part clamping fixture Download PDFInfo
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- CN217316950U CN217316950U CN202120656051.5U CN202120656051U CN217316950U CN 217316950 U CN217316950 U CN 217316950U CN 202120656051 U CN202120656051 U CN 202120656051U CN 217316950 U CN217316950 U CN 217316950U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model provides a high-precision disc type thin-wall part clamping fixture, which limits the degree of freedom of parts on a tool by designing a base and adjusting the structures and the connection modes of a supporting seat and a pressing plate, ensures accurate positioning in the part processing process, is firm in fixation, is suitable for clamping large-size high-precision complex thin-wall disc type parts, and ensures firm and stable clamping of thin-wall parts and strong universality; after processing, the dimensional and form and position tolerance meets the requirements of technical documents.
Description
Technical Field
The utility model belongs to rocket engine installation field, in particular to high accuracy dish class thin wall part clamping anchor clamps.
Background
Rocket motors are mounted as thousands of thin-walled disk parts for connection, sealing, fastening, and flow control. The existing parts are complex in shape, large in size, thin in wall and high in precision requirement, the general outer diameter of the parts is larger than 300mm, the thickness of a single side of the outer diameter is smaller than 4mm, 20 groups of uneven holes are distributed on the circumference, the total thickness of the holes is 108, the minimum tolerance of the hole diameter is smaller than 0.018mm, the indexing tolerance between the holes is smaller than 1', the perpendicularity between the central axis of each hole and the upper and lower installation reference surfaces of the parts is smaller than 0.05mm, and the perpendicularity between the two installation surfaces and the references is smaller than 0.02 mm.
At present, the deformation problems of warping, lateral bending, bending and the like caused by clamping frequently occur in the machining process of disc thin-wall parts, the machining quality and the machining efficiency of the parts are seriously affected, and the precision of the complex structure is difficult to ensure, so that the problem that how to reduce and eliminate the deformation of the parts to the maximum extent and ensure the quality and the efficiency of products always troubles the actual machining process is difficult. The combined clamp demand for parts such as complex shells, supports and the like is greatly increased. However, the conventional combined clamp has the following disadvantages and defects:
(1) the traditional combined clamp has single function, and only one part can be machined by one clamp. However, the tasks of complex parts produced and manufactured in a workshop are more and more, the requirements for the types of combined clamps are further improved, the design and production period of the combined clamps are long, the production period of the workshop products is long, the production efficiency is reduced, and finally the production cost is increased.
(2) The traditional combined clamp is complex in installation, debugging and assembling procedures, and the whole process is finished by clamp professional skills. Because the combined clamp is not generally produced and manufactured in a clamp using unit, a specially-assigned person is required to transport the combined clamp when the combined clamp is used, and the combined clamp is installed and debugged on a workshop site through a clamp professional skill, so that the non-working time of the combined clamp is long, and more personnel are wasted.
(3) The use cost of the combined clamp is high, and the production and manufacturing cost is increased. The cost of one set of clamp is at least several hundred yuan, and the cost is higher.
In summary, the use of the traditional combined clamp requires a lot of manpower, financial resources and material resources to be invested in a factory, a lot of time is consumed, the efficiency improvement of production, manufacturing and use units is severely restricted, the cost is further increased greatly, and finally the pace of realizing high-efficiency and high-quality production in a workshop is slowed down.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned defect, provide a high accuracy dish class thin wall part clamping anchor clamps, through the design base, the structure and the connected mode of adjustment bearing and clamp plate have restricted the degree of freedom of part on the frock, have guaranteed can pinpoint in the part machining process, and fixed firm. The clamping device is suitable for clamping large-size high-precision complex thin-wall disc parts, and the thin-wall parts are clamped firmly and stably. After processing, the dimensional and form and position tolerance meets the requirements of technical documents.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a high-precision disc type thin-wall part clamping fixture comprises a base, an adjusting supporting seat, a pressing plate and a locking mechanism;
the base is fixed on the workbench, and the upper end surface of the base is provided with a circular groove matched with the lower surface of the disc-shaped part of the part, so that the part is positioned;
the adjusting support seat is a cylinder, is arranged on the base and can move along the axial direction; the upper end surface of the adjusting support seat is matched with the lower surface of the suspended part of the part to realize the support of the part;
the adjusting support seat is provided with a fixing rod perpendicular to the upper end face, and the fixing rod is matched with the locking mechanism after penetrating through a central circular hole of the suspended part, so that the pressing plate is pressed on the upper surface of the suspended part of the part.
Furthermore, the base is provided with counter bores which are symmetrical about the center, and the base is fixed on the workbench after the screw rod and the nut are matched with the counter bores.
Further, the center of the base is provided with an internal threaded hole, the side wall of the adjusting support seat is provided with an external thread, and the installation of the adjusting support seat on the base is realized after the external thread is matched with the internal threaded hole.
Further, the locking mechanism is a nut; the fixing rod is provided with external threads, the first end of the fixing rod is fixed on the upper end face of the adjusting supporting seat, and the second end of the fixing rod penetrates through a central circular hole of the suspended part of the part in sequence and is matched with the nut after penetrating through the central circular hole and the pressing plate.
Furthermore, the end of the second end of the fixing rod is of a hexagonal structure.
Furthermore, the base is a cylinder, and the pressing plate is of a circular plate-shaped structure.
Furthermore, the height of the upper end face of the supporting seat relative to the bottom face of the groove of the base is adjusted to be 15-50 mm.
Furthermore, the adjusting support seat and the fixing rod arranged on the adjusting support seat are integrally formed.
Compared with the prior art, the utility model following beneficial effect has:
(1) the utility model relates to a high-precision disc type thin-wall part clamping fixture, which enables the part to realize circumferential positioning through a groove arranged on a base in the processing process, and ensures the processing reliability; the supporting of the center suspended part of the part is realized by adjusting the supporting seat, the mounting and positioning area of the part is increased, and the vibration and processing deformation of the part caused by the excessively small clamping area in the processing process are avoided; the axial positioning of the part is realized through the pressing plate, so that the part is not moved due to cutting force in the machining process of the part;
(2) the utility model relates to a high accuracy disc class thin wall part clamping anchor clamps, the adjustment bearing can be adjusted along the axial, can be according to the protruding height of the central unsettled position of part nimble adjustment adjusting bearing up end the height, make it cooperate with the part unsettled position lower surface, thereby realize the support to the part, the commonality is strong;
(3) the utility model relates to a high-precision disc type thin-wall part clamping fixture, which has simple structure, convenient processing, low production and manufacturing cost and repeated use; the use of a combined clamp is avoided, and the production and manufacturing cost is reduced; the clamping mode is simple, the disassembly is convenient, and the labor intensity of operators is reduced.
Drawings
FIG. 1 is a schematic structural view of a clamping fixture for high-precision thin-walled parts of the present invention;
FIG. 2 is a schematic diagram of the structure of the base in the clamping fixture for high-precision thin-walled parts of the present invention;
FIG. 3 is a schematic view of an adjusting support seat in the clamping fixture for high-precision thin-walled parts of the present invention;
FIG. 4 is a schematic structural view of a middle pressing plate of the clamping fixture for high-precision thin-walled parts of the present invention;
fig. 5 is a schematic structural diagram of a locking mechanism in the high-precision disc type thin-wall part clamping fixture of the present invention.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The utility model discloses an anchor clamps are used for carrying out the clamping location to the dish type thin wall part body that has accomplished rough machining, and the profile that above-mentioned body has been processed and is accomplished includes the disc position of bottom and each surface at the outside protruding unsettled position in middle part, and the unsettled position center of part is equipped with the round hole.
As shown in fig. 1, the utility model relates to a high-precision disc type thin-wall part clamping fixture, which comprises a base 1, an adjusting supporting seat 2, a pressing plate 3 and a locking mechanism 4;
as shown in fig. 2, the base 1 is fixed on a workbench of a machining center and is mainly used for supporting the positioning of a workpiece reference surface and a part, and according to the structural characteristics of the part, a groove matched with the lower surface of a disc-shaped part of the part is arranged on the upper end surface of the base 1 and is closely attached to and supported by the lower surface of the disc-shaped part of the part, so that the machining reliability is ensured, and the positioning of the part is realized;
as shown in fig. 3, the adjustment support base 2 is mounted on the base 1 and can move along the axial direction; the upper end surface of the adjusting support seat 2 is matched with the lower surface of the suspended part of the part to support the part; specifically, the height of the upper end face of the adjusting support seat 2 relative to the bottom of the groove is adjusted through axial movement, so that the adjusting support seat can be matched with parts with different sizes.
The adjusting support base 2 is provided with a fixing rod vertical to the upper end face, and the fixing rod penetrates through a central circular hole of the suspended part of the part and then is matched with the locking mechanism 4, so that the pressing plate 3 is pressed on the upper surface of the suspended part of the part. Because most surfaces of the parts are in a suspended state, the adjusting supporting seat 2 supports the central suspended part of the parts, the mounting and positioning area of the parts is increased, the vibration and processing deformation of the parts due to the fact that the clamping area is too small in the processing process are avoided, meanwhile, the outer circle of the parts is tightly matched with the inner hole of the parts, and the clamp tool is guaranteed to be coincided with the centers of the parts.
Further, the base 1 is provided with counter bores which are symmetrical about the center, and the base 1 is fixed on the workbench after the screw rods and the nuts are matched with the counter bores. The two counter bores are designed to reliably connect the base with the machine tool workbench by using the threaded rod and the nut, and the nut is hidden in the hole by the counter bores so as not to influence the installation of parts.
Further, the center of the base 1 is provided with an internal threaded hole, the side wall of the adjusting support seat 2 is provided with an external thread, and the installation of the adjusting support seat 2 on the base 1 is realized after the external thread is matched with the internal threaded hole.
Further, the locking mechanism 4 is a nut; the fixing rod is provided with external threads, the first end of the fixing rod is fixed on the upper end surface of the adjusting and supporting seat 2, the second end of the fixing rod sequentially penetrates through a central circular hole of the suspended part of the part, is matched with the nut after penetrating through the central circular hole of the suspended part of the part and the pressing plate 3, and the end head of the fixing rod is of a hexagonal structure and is screwed tightly; the structure of the pressure plate 3 is shown in fig. 4, the structure of the nut is shown in fig. 5, and the axial locking and positioning are carried out through the locking nut, so that the part is prevented from moving due to cutting force when the part is machined. The sleeving clamp process equipment ensures the position accuracy and is firmly fixed by limiting the degree of freedom of the part on the tool.
Further, the base 1 is a cylinder, the pressing plate 3 is a circular plate-shaped structure, and the pressing plate 3 is tightly attached to the upper surface of the suspended part of the part after being screwed by the locking nut.
Furthermore, the adjusting support seat 2 and the fixing rod arranged on the adjusting support seat 2 are integrally formed.
The use steps are as follows:
(1) a base 1 is arranged on a processing center platform, and the platform is stably and reliably connected with two mounting holes of the base by bolts and nuts;
(2) installing and adjusting the supporting seat 2, and screwing the external thread of the supporting seat and the internal thread of the base;
(3) installing a part on the supporting seat, wherein the lower surface of a disc-shaped part of the part is required to be matched and positioned with the bottom surface of a groove arranged on the upper end surface of the base, and the upper end surface of the supporting seat 2 and the lower surface of a suspended part of the part are adjusted to form stable support for limiting;
(4) a pressing plate 3 is sleeved on the fixed rod and matched with the external thread of the fixed rod, and the pressing plate is arranged on the upper surface of the suspended part of the part;
(5) the nut is adopted to compress the pressing plate, so that the part is firmly locked, and the relative movement between the part and the tool in the cutting process is ensured.
Example 1
In the embodiment, the clamping fixture for the high-precision disc type thin-wall parts comprises a base 1, an adjusting support seat 2, a pressing plate 3 and a locking mechanism 4.
The base 1 is made of stainless steel materials, the external structure of the base is a cylinder with the diameter of 322mm, the upper end surface of the base is provided with a groove, the central position of the base is provided with an internal thread hole, and the size of the internal thread hole is M122X3 mm; two counter bores with the inner hole diameter of 32mm and the depth of 21mm are arranged on the base 1 and are connected with the workbench through bolts and nuts; the external screw thread that size is M122X3mm is equipped with in the adjustment supporting seat 2 outside, is connected through the internal thread in external screw thread and the base 1 tapped hole, and adjustment supporting seat 2 up end is equipped with the dead lever, and the dead lever is equipped with the size and is M30X1.5 -6 g external thread for connecting with the internal thread of the nutThe end of the fixed rod is a hexagon with the size S equal to 19mm and is used for screwing. The up end of the adjusting support seat 2 can be limited by the end face of the suspended part of the part, the part is guaranteed to be supported reliably, the pressing plate 3 is a circular pressing plate and is provided with an inner hole with the diameter of 30mm, the pressing plate is used for being in close contact with the upper end face of the suspended part of the part, the contact area is guaranteed to be large, the locking thread of the fixing rod is used for compressing the circular pressing plate, and the part and the clamp are guaranteed not to move relatively when being subjected to cutting force in the machining process.
The clamping fixture for the high-precision thin-wall parts comprises the following use steps:
(1) a base 1 is arranged on a machining center platform, and the platform and the base are stably and reliably connected through two counter bores by bolts and nuts;
(2) installing and adjusting a supporting seat 2, and screwing the external thread of the supporting seat and the internal thread of the base 1;
(3) installing a disc-type thin-walled part on the adjusting support seat 2, wherein the lower surface of the disc-shaped part of the part is required to be matched and positioned with the bottom surface of a groove arranged on the upper end surface of the base, and the upper end surface of the support seat and the lower surface of the suspended part of the part form stable support for limiting;
(4) a pressing plate 3 penetrates through a fixed rod arranged on the adjusting support seat 2, and the pressing plate 3 is arranged on the upper surface of the suspended part of the part;
(5) adopt nut and dead lever cooperation, compress tightly clamp plate 3, make the part locked firmly, guarantee not take place relative movement between cutting in-process part and the frock.
The present invention has been described in detail with reference to the specific embodiments and the exemplary embodiments, but the description should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and embodiments thereof without departing from the spirit and scope of the present invention, and all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (8)
1. A high-precision disc type thin-wall part clamping fixture is characterized by comprising a base (1), an adjusting supporting seat (2), a pressing plate (3) and a locking mechanism (4);
the base (1) is fixed on the workbench, and the upper end surface of the base is provided with a circular groove matched with the lower surface of the disc-shaped part of the part to realize the positioning of the part;
the adjusting support seat (2) is a cylinder, is arranged on the base (1) and can move along the axial direction; the upper end surface of the adjusting support seat (2) is matched with the lower surface of the suspended part of the part to support the part;
the adjusting support seat (2) is provided with a fixing rod vertical to the upper end face, and the fixing rod is matched with the locking mechanism (4) after penetrating through a central circular hole of the suspended part of the part, so that the pressing plate (3) is pressed on the upper surface of the suspended part of the part.
2. The clamping fixture for the high-precision thin-walled disc parts as claimed in claim 1, wherein the base (1) is provided with counter bores which are symmetrical about a center, and the base (1) is fixed on the workbench by adopting a screw rod and a nut which are matched with the counter bores.
3. The clamping fixture for the thin-walled parts with high precision as claimed in claim 1, characterized in that the base (1) is provided with an internal threaded hole at the center, the side wall of the adjusting support (2) is provided with an external thread, and the external thread is matched with the internal threaded hole to realize the installation of the adjusting support (2) on the base (1).
4. A high-precision thin-walled part clamping fixture as claimed in claim 1, characterized in that said locking mechanism (4) is a nut; the fixing rod is provided with external threads, the first end of the fixing rod is fixed on the upper end surface of the adjusting supporting seat (2), and the second end of the fixing rod sequentially penetrates through a central circular hole in the suspended part of the part and is matched with the nut after penetrating through the central circular hole and the pressing plate (3).
5. The clamping fixture for the thin-walled parts with high precision as claimed in claim 4, wherein the second end of the fixing rod is hexagonal.
6. A clamping fixture for high-precision thin-walled disc parts according to any one of claims 1 to 5, characterized in that the base (1) is a cylinder, and the pressing plate (3) is a circular plate-shaped structure.
7. The clamping fixture for the thin-walled parts with high precision as claimed in claim 1, wherein the height of the upper end face of the adjusting support seat (2) relative to the bottom face of the groove of the base (1) is 15-50 mm.
8. The clamping fixture for the thin-walled parts with high precision as claimed in claim 1, characterized in that the adjusting bearing seat (2) and the fixing rod arranged on the adjusting bearing seat (2) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656051.5U CN217316950U (en) | 2021-03-31 | 2021-03-31 | High-precision disc type thin-wall part clamping fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656051.5U CN217316950U (en) | 2021-03-31 | 2021-03-31 | High-precision disc type thin-wall part clamping fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217316950U true CN217316950U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120656051.5U Active CN217316950U (en) | 2021-03-31 | 2021-03-31 | High-precision disc type thin-wall part clamping fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217316950U (en) |
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2021
- 2021-03-31 CN CN202120656051.5U patent/CN217316950U/en active Active
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