CN214212269U - Vacuum adsorption turning clamp for thin sheet parts - Google Patents
Vacuum adsorption turning clamp for thin sheet parts Download PDFInfo
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- CN214212269U CN214212269U CN202023066797.5U CN202023066797U CN214212269U CN 214212269 U CN214212269 U CN 214212269U CN 202023066797 U CN202023066797 U CN 202023066797U CN 214212269 U CN214212269 U CN 214212269U
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- main shaft
- sucker
- sucking disc
- flange
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Abstract
The utility model provides a vacuum adsorption turning anchor clamps for thin slice class part, including locating the main shaft on the lathe, the main shaft rotates to be supported in the sleeve, and the main shaft inner chamber cavity, main shaft front end fixedly connected with are used for adsorbing fixed sucking disc to accurate thin slice class part, and the inside gas circuit structure that is equipped with of sucking disc is equipped with the trachea in the cavity inner chamber of main shaft, and the interface connection of the gas circuit structure in trachea one end and the sucking disc, the trachea other end stretch out the cavity inner chamber of main shaft and with the interface fixed connection of vacuum pump. The utility model fixes and positions the sheet parts mainly by using the sucking disc as a clamp, the parts can not be deformed in the clamping and holding processes, the processing precision can be effectively ensured, the precision of repeated clamping through testing can reach within 1 mu m, and the processing precision of the sheet parts is improved; and the vacuum adsorption clamp combines low cost and high precision, and has small processing difficulty, convenient installation and low processing cost.
Description
Technical Field
The utility model belongs to the technical field of anchor clamps, concretely relates to vacuum adsorption turning anchor clamps for thin slice class part.
Background
During the turning process of the part, the part is firstly clamped, and the clamping is to position and clamp the workpiece on a machine tool. The numerical control lathe clamp has various types and different shapes, common clamps comprise a self-centering chuck, a single-action chuck, a diaphragm chuck, a spring chuck, an expansion core chuck, a center frame, a tip and the like, and parts with irregular shapes need to be designed with special clamps.
The sheet parts have short length and small cylindrical surface, and the effect of clamping the outer diameter is not ideal. As shown in fig. 6, the aluminum hub structure diagram has a major outer diameter of only 0.8mm and a short length, and when a three-jaw chuck is used for clamping, the flatness of both sides of a part after trial machining exceeds 0.01mm, and the part is far from the target precision. If the diaphragm chuck is adopted for clamping, the precision is higher, but the precision of the part cannot be ensured, and the purchasing cost of the diaphragm chuck is higher and is not economical. The end face of the other sheet part is provided with a groove, if the notch is larger, the clamping outer diameter can deform, such as the sheet part shown in fig. 7, the outer diameter of the sheet part is not suitable for being stressed, and the clamping part needs to be considered again. In view of the above problems, improvements are urgently required.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides a vacuum adsorption turning anchor clamps for thin slice class part, the utility model discloses mainly fix a position thin slice class part through the sucking disc as anchor clamps, can not cause the deformation to the part in clamping and the centre gripping process, can effectively guarantee the machining precision, the precision of clamping repeatedly can reach within 1 mu m through the test, improves the machining precision of thin slice class part; and the vacuum adsorption clamp combines low cost and high precision, and has small processing difficulty, convenient installation and low processing cost.
The utility model adopts the technical proposal that: a vacuum adsorption turning anchor clamps for thin slice class part, including locating the main shaft on the lathe, the main shaft rotates and supports in the sleeve, main shaft inner chamber cavity, main shaft front end fixedly connected with is used for adsorbing fixed sucking disc to accurate thin slice class part, the inside gas circuit structure that is equipped with of sucking disc, be equipped with the trachea in the cavity inner chamber of main shaft, the interface connection of the gas circuit structure in trachea one end and the sucking disc, the trachea other end stretches out the cavity inner chamber of main shaft and with the interface fixed connection of vacuum pump.
In order to further limit the technical scheme, the suction cup is connected with the front end of the main shaft in a manner that: the main shaft front end is through screw fixedly connected with flange B, flange B front end fixedly connected with flange A, sucking disc rear end and flange A fixed connection, the sucking disc passes through the sealing washer with flange A's binding face and seals.
The technical scheme is further limited, the sucker comprises a sucker main body, the front end face of the sucker main body is an attraction face, a central connecting shaft is arranged in the center of the rear end face of the sucker main body and is used for being fixedly connected with a flange A, external threads for connection are arranged on the surface of the central connecting shaft, a central inner hole is arranged in the center of the flange A, and internal threads connected with the central connecting shaft are arranged in the central inner hole; the air path structure in the sucker comprises a plurality of adsorption grooves uniformly arranged on the suction surface of the sucker main body, a plurality of branch air paths correspondingly communicated with the adsorption grooves are arranged in the sucker main body, a main air path communicated with each branch air path is arranged in the central connecting shaft, and the end of the central connecting shaft is connected with the end of an air pipe through a connector and enables the inner hole of the air pipe to be communicated with the main air path; and a processing port for processing the gas distribution path on the outer circular surface of the sucker main body is sealed and blocked by a plug.
In order to further limit the technical scheme, the roughness value of the suction surface of the sucker is Ra1.6.
The technical scheme is further limited, a connecting sleeve is fixedly connected to the rear end of the spindle, the diameter of the rear end of the air pipe is increased, the air pipe penetrates through the connecting sleeve to be supported, and a vacuum rotary joint used for being connected with a vacuum pump is arranged at the rear end of the air pipe.
In the technical scheme, the vacuum pump is a vacuum pump with the vacuum degree of 750mmHg and the flow rate of 240L/min.
The utility model has the advantages compared with the prior art:
1. according to the scheme, the sucker is mainly used as a clamp to fix and position the sheet part, the part cannot be deformed in the clamping and clamping process, the machining precision can be effectively guaranteed, the precision of repeated clamping through testing can reach within 1 mu m, the clamping problem of the precise sheet part is solved, and the machining precision of the sheet part is improved.
2. This scheme combines vacuum pump and sucking disc to realize the centre gripping to thin slice class part, and this vacuum adsorption anchor clamps will be in the same place low-cost and the fine combination of high accuracy, and the processing degree of difficulty is little, simple to operate, and the processing cost is low.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of the installation structure of the present invention;
FIG. 3 is a cross-sectional view of the structure of the sucking disc of the present invention;
FIG. 4 is a front perspective view of the sucking disc of the present invention;
FIG. 5 is a side and back three-dimensional structure view of the sucking disc of the present invention;
FIG. 6 is a schematic structural diagram of a conventional thin-plate type part;
fig. 7 is a schematic structural view of another conventional sheet-like component.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements" does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Referring to fig. 1-7, embodiments of the present invention are detailed.
A vacuum adsorption turning anchor clamps for thin slice class part, this embodiment is to the characteristics of thin slice part, designs vacuum adsorption anchor clamps, and the principle of vacuum adsorption is shown as figure 1, mainly connects sucking disc 1 with vacuum pump 11 and realizes the centre gripping to thin slice part.
Specifically, as shown in fig. 2, the spindle device comprises a spindle 9 arranged on a machine tool, wherein the spindle 9 is rotatably supported in a sleeve 10, and an inner cavity of the spindle 9 is hollow. The front end of the main shaft 9 is fixedly connected with a sucker 1 for sucking and fixing precision sheet parts 12. The connection mode of the sucker 1 at the front end of the main shaft 9 is as follows: the front end of the main shaft 9 is fixedly connected with a flange B6 through a screw, the front end of the flange B6 is fixedly connected with a flange A4, the rear end of the sucking disc 1 is fixedly connected with a flange A4, and the binding surface of the sucking disc 1 and the flange A4 is sealed through a sealing ring 3.
The suction cup is characterized in that an air path structure is arranged inside the suction cup 1, an air pipe 5 is arranged in a hollow inner cavity of the main shaft 9, and one end of the air pipe 5 is connected with an interface of the air path structure in the suction cup 1. Specifically, sucking disc 1 includes sucking disc main part 1-1, sucking disc main part 1-1's preceding terminal surface is suction surface 1-2, sucking disc main part 1-1 rear end face center is equipped with central connecting axle 1-5, central connecting axle 1-5 be used for with flange A4 fixed connection, central connecting axle 1-5 surface is equipped with the external screw thread that is used for connecting, flange A4 center is equipped with central hole 4-1, be equipped with the internal thread of being connected with central connecting axle 1-5 in the hole 4-1 in the center. The air path structure in the sucker 1 comprises a plurality of adsorption grooves 1-3 evenly arranged on an attraction surface 1-2 of the sucker main body 1-1, a plurality of branch air paths 1-4 correspondingly communicated with the adsorption grooves 1-3 are arranged in the sucker main body 1-1, a main air path 1-6 communicated with each branch air path 1-4 is arranged in the center connecting shaft 1-5, and the end of the center connecting shaft 1-5 is connected with the end of the air pipe 5 through a joint and enables the inner hole of the air pipe 5 to be communicated with the main air path 1-6. And a processing port for processing the gas distribution path 1-4 on the outer circular surface of the sucker main body 1-1 is sealed and blocked by a plug 2.
The key part of the clamp is the sucker 1, the roughness value of the suction surface 1-2 of the sucker 1 is moderate, the roughness is poor, the adhesion is not tight, the sealing effect is not good, the roughness is too good, the friction coefficient is reduced, the maximum static friction force of the part is reduced, and the workpiece is easy to drive during turning. Tests show that the effect is ideal when the roughness value of the suction surface 1-2 is Ra1.6. In addition, according to F ═ P × S, under the condition that the vacuum degree value is constant, the adsorption area S is increased, so that the positive pressure can be increased, the maximum static friction force of the part is increased, and the stable clamping of the part is ensured.
The other end of the air pipe 5 extends out of the hollow inner cavity of the main shaft 9 and is fixedly connected with an interface of a vacuum pump 11. Specifically, the rear end of the main shaft 9 is fixedly connected with a connecting sleeve 7, the diameter of the rear end of the air pipe 5 is increased and the air pipe passes through the connecting sleeve 7 to be supported, and the rear end of the air pipe 5 is provided with a vacuum rotary joint 8 used for being connected with a vacuum pump 11. The vacuum pump 11 adopts a vacuum pump with the vacuum degree of 750mmHg and the flow rate of 240L/min.
After the sheet part 12 is installed, a closed space is formed between the vacuum pump 11 and the sheet part 12, and the sheet part 12 and the suction cup 1 are required to be tightly attached. When the vacuum pump 11 is started, the air in the suction cup 1 is pumped away, the internal air pressure is reduced to P1, the atmospheric pressure is set to P0, and when P1 is less than P0 and reaches a certain value, the workpiece is sucked; when P1 approaches P0 to a certain value, the workpiece drops; when P1 is smaller, the higher the degree of vacuum inside the chuck is, the larger the suction force of the workpiece is.
The following is a working example in which the workpiece blank is an aluminum alloy bar, as shown in fig. 6. The requirement of the thin sheet part 12 is very high, the size precision of an inner hole is 5 mu m, the geometric precision of an end face and an excircle is 2 mu m, and the precision of the part cannot be ensured by adopting the traditional clamping method. Through careful analysis, three sequences were arranged to complete the processing: the first-order equipment adopts a numerical control lathe and is provided with a three-jaw chuck, an inner hole and a large diameter are machined until the inner hole and the large diameter meet the requirements of a drawing, the right end surface of the lathe is turned to be used as a second-order reference, and the semi-finishing of all characteristics is finished; the second-order equipment adopts a numerical control lathe to match with the vacuum adsorption clamp, and finely lathes a left end face and a left side sinking platform by taking a right end face and an inner hole as references, wherein the rotating speed n is 2000r/min, the feeding f is 0.03mm/r, and the cutting depth ap is 0.15 mm; the third procedure also adopts a second procedure of equipment and clamps, the right end face and the right side sinking platform are finely turned by taking the left end face and the inner hole as references, and the cutting amount is the same as the second procedure. After the three sequences are finished, all the precision completely meet the requirements of the drawing.
The utility model discloses mainly carry out fixed position as anchor clamps to the thin slice part through the sucking disc, can not cause the deformation to the part at clamping and centre gripping in-process, can effectively guarantee the machining precision, can reach in 1 mu m through the precision of test clamping repeatedly, solved the clamping difficult problem of accurate thin slice part, improve the machining precision of thin slice class part. And the vacuum adsorption clamp combines low cost and high precision, and has small processing difficulty, convenient installation and low processing cost.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A vacuum adsorption turning anchor clamps for thin slice class part, including locating main shaft (9) on the lathe, main shaft (9) rotate to be supported in sleeve (10), main shaft (9) inner chamber cavity, its characterized in that: spindle (9) front end fixedly connected with is used for adsorbing fixed sucking disc (1) to thin slice class part (12), sucking disc (1) inside is equipped with the gas circuit structure, be equipped with trachea (5) in the cavity inner chamber of spindle (9), the interface connection of the gas circuit structure in trachea (5) one end and sucking disc (1), trachea (5) other end stretch out the cavity inner chamber of spindle (9) and with the interface fixed connection of vacuum pump (11).
2. The vacuum adsorption turning fixture for thin sheet parts according to claim 1, characterized in that: the connection mode of the sucker (1) at the front end of the main shaft (9) is as follows: the front end of the main shaft (9) is fixedly connected with a flange B (6) through a screw, the front end of the flange B (6) is fixedly connected with a flange A (4), the rear end of the sucking disc (1) is fixedly connected with the flange A (4), and the binding surface of the sucking disc (1) and the flange A (4) is sealed through a sealing ring (3).
3. The vacuum adsorption turning fixture for thin sheet parts according to claim 2, characterized in that: the sucker (1) comprises a sucker main body (1-1), the front end face of the sucker main body (1-1) is a suction face (1-2), a central connecting shaft (1-5) is arranged at the center of the rear end face of the sucker main body (1-1), the central connecting shaft (1-5) is used for being fixedly connected with a flange A (4), an external thread for connection is arranged on the surface of the central connecting shaft (1-5), a central inner hole (4-1) is arranged at the center of the flange A (4), and an internal thread connected with the central connecting shaft (1-5) is arranged in the central inner hole (4-1); the air path structure in the sucker (1) comprises a plurality of adsorption grooves (1-3) uniformly arranged on a suction surface (1-2) of the sucker main body (1-1), a plurality of branch air paths (1-4) correspondingly communicated with the adsorption grooves (1-3) are arranged in the sucker main body (1-1), a main air path (1-6) communicated with each branch air path (1-4) is arranged in the central connecting shaft (1-5), the end of the central connecting shaft (1-5) is connected with the end of the air pipe (5) through a connector, and an inner hole of the air pipe (5) is communicated with the main air path (1-6); the processing port used for processing the gas distribution path (1-4) on the outer circular surface of the sucker main body (1-1) is sealed and blocked by the plug (2).
4. The vacuum adsorption turning fixture for thin sheet parts according to claim 3, characterized in that: the roughness value of the suction surface (1-2) of the sucker (1) is Ra1.6.
5. The vacuum adsorption turning fixture for thin sheet parts according to any one of claims 1 to 4, characterized in that: the rear end of the main shaft (9) is fixedly connected with a connecting sleeve (7), the diameter of the rear end of the air pipe (5) is increased, the air pipe penetrates through the connecting sleeve (7) to be supported, and the rear end of the air pipe (5) is provided with a vacuum rotary joint (8) used for being connected with a vacuum pump (11).
6. The vacuum adsorption turning fixture for thin sheet parts according to claim 5, characterized in that: the vacuum pump (11) adopts a vacuum pump with the vacuum degree of 750mmHg and the flow rate of 240L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066797.5U CN214212269U (en) | 2020-12-18 | 2020-12-18 | Vacuum adsorption turning clamp for thin sheet parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066797.5U CN214212269U (en) | 2020-12-18 | 2020-12-18 | Vacuum adsorption turning clamp for thin sheet parts |
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| CN214212269U true CN214212269U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023066797.5U Active CN214212269U (en) | 2020-12-18 | 2020-12-18 | Vacuum adsorption turning clamp for thin sheet parts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091242A (en) * | 2022-06-21 | 2022-09-23 | 深圳市金卓五金塑胶制品有限公司 | Vacuum device of numerically controlled lathe |
| CN115431081A (en) * | 2022-09-21 | 2022-12-06 | 中国电子科技集团公司第十研究所 | Vacuum adsorption clamp |
-
2020
- 2020-12-18 CN CN202023066797.5U patent/CN214212269U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091242A (en) * | 2022-06-21 | 2022-09-23 | 深圳市金卓五金塑胶制品有限公司 | Vacuum device of numerically controlled lathe |
| CN115431081A (en) * | 2022-09-21 | 2022-12-06 | 中国电子科技集团公司第十研究所 | Vacuum adsorption clamp |
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