CN218396018U - Precise drilling clamp for aluminum alloy end cover with connecting ribs - Google Patents
Precise drilling clamp for aluminum alloy end cover with connecting ribs Download PDFInfo
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- CN218396018U CN218396018U CN202222675321.4U CN202222675321U CN218396018U CN 218396018 U CN218396018 U CN 218396018U CN 202222675321 U CN202222675321 U CN 202222675321U CN 218396018 U CN218396018 U CN 218396018U
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 title claims description 24
- 238000000034 method Methods 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Drilling And Boring (AREA)
Abstract
The utility model belongs to the technical field of take the accurate spot facing work of splice bar aluminum alloy end cover, provide and take the accurate boring grab of splice bar aluminum alloy end cover. One end of the positioning base plate is sequentially provided with a plurality of positioning holes, and the positioning shaft sequentially passes through the central positioning hole of the processed part and is fixed with one positioning hole of the positioning base plate; the other end of the positioning foundation plate is provided with a hole and is connected with a drill bushing, and the drill bushing corresponds to the precise hole of the processed part; a supporting plate is fixed on the lower surface of the positioning foundation plate, a threaded hole is formed in the supporting plate, and an angular positioning adjusting bolt is in threaded engagement with the threaded hole; one end of the angular positioning adjusting bolt is in contact with the side face of the connecting rib of the processed part, and the contact part of the angular positioning adjusting bolt and the supporting plate is locked through the fastening bolt. Compared with the prior art, the clamping method has the advantages that the end cover center positioning hole is used as a positioning reference, the connecting rib is used for angular positioning, the angular positioning is designed to be adjustable, and the problem of angular positioning errors caused by large casting surface tolerance of the connecting rib is avoided to the greatest extent.
Description
Technical Field
The utility model relates to a take accurate spot facing work technical field of splice bar aluminum alloy end cover, especially relate to take accurate boring grab of splice bar aluminum alloy end cover.
Background
Aluminum alloy end covers with connecting ribs are generally used for end covers of actuating cylinder products, and surface positioning holes are used for installing connectors and connecting guide pipes. Because such products are mostly in high-load and high-frequency vibration working environments, if the products are installed with stress in the installation and connection process of the guide pipe, the risk of crack and even breakage of the guide pipe is very easy to occur in the use process. Therefore, the requirement on the installation and positioning accuracy of the guide pipe is high, and the minimum requirement on the accuracy of the positioning hole on the surface of the end cover reaches +/-0.05 mm. In the actual processing process, the defects of position precision, wall thickness out-of-tolerance and the like often occur under the influence of a clamping mode.
The traditional method for processing and clamping the positioning hole on the surface of the end cover comprises the following steps: and (3) using the assembling clamp, taking the inner hole as a positioning reference, dropping the part on the assembling clamp, contacting the angular positioning block designed by the theoretical size with the connecting rib, and drilling the hole backwards by using a bench drill through the drill bushing at the positioning angle. The clamping mode has the following defects: 1) The inner hole is used as a positioning reference, is not unified with a design reference, and has a certain positioning error. 2) The connecting ribs are used as angular positioning surfaces, and the surfaces of the connecting ribs are blank surfaces, so that mechanical processing is not carried out, and certain errors exist between the connecting ribs and the theoretical size of a digital model during angular positioning. 3) Therefore, the size angle of the parts is large, the diameter of the base of the assembling clamp needs to exceed the maximum diameter of the parts in order to ensure the stability of the parts, and the clamp is heavy and inconvenient to use.
In view of the above reasons, the precision drilling fixture for the aluminum alloy end cover with the connecting ribs is provided, the drilling clamping mode is changed by means of the fixture, the positioning reference and the design reference are unified by changing the positioning thought, the angular positioning reference is changed into an adjustable type, the size error of the surface of a casting blank is eliminated, the weight and the volume of the fixture are reduced, the fixture is convenient to use, the quality risk in the machining process is reduced, and the difficult problem that the precision drilling precision of the aluminum alloy end cover with the connecting ribs is difficult to guarantee is solved to the greatest extent. Meanwhile, in order to reduce the production cost and improve the use efficiency of the clamp, a plurality of positioning references are designed for the clamp, and the use effect of one clamp for four purposes is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take accurate boring grab of joint bar aluminum alloy end cover, this anchor clamps have improved the drilling of former end cover and have adopted the clamping mode of assembling anchor clamps, avoided the non-uniform influence to the final machining precision production of spare part of location benchmark, foundry goods blank face positioning error has been eliminated, it is heavy to have compensatied former anchor clamps of assembling, use the clamping inconvenient and can only process weak point such as a product, greatly promoted the drilling precision and the production efficiency in the accurate hole of aluminum alloy end cover, the anchor clamps cost in the production process has been reduced.
The technical scheme of the utility model as follows: a precise drilling clamp for an aluminum alloy end cover with a connecting rib comprises a positioning base plate 1, a positioning shaft 2, a fastening bolt 3, an angular positioning adjusting bolt 4, a drill bushing 5 and a supporting plate 6; one end of the positioning base plate 1 is sequentially provided with a plurality of positioning holes, and the positioning shaft 2 sequentially penetrates through the central positioning hole of the processed part and is fixed with a positioning hole in the positioning base plate 1; the other end of the positioning foundation plate 1 is provided with a hole and is connected with a drill bushing 5, and the drill bushing 5 corresponds to the precise hole of the processed part; a supporting plate 6 is fixed on the lower surface of the positioning foundation plate 1, a threaded hole is formed in the supporting plate 6, and the angular positioning adjusting bolt 4 is in threaded engagement with the threaded hole; one end of the angular positioning adjusting bolt 4 is in contact with the side face of a connecting rib of the processed part, and the contact position of the angular positioning adjusting bolt and the supporting plate 6 is locked through the fastening bolt 3.
The locating hole is equipped with 4.
The positioning shaft 2 is fixed on the positioning foundation plate 1 through a fastening bolt 3.
After the angular positioning adjusting bolt 4 is in contact with the side face of the connecting rib of the processed part, the supporting plate 6 is moved by rotating the angular positioning adjusting bolt 4, and then the drill bushing 5 is consistent with the position of the precision hole of the processed part.
The positioning base plate 1 is used for providing positioning support for the whole clamp; the positioning shaft 2 is fixed on the positioning base plate 1, is inserted into a central hole of a part to be machined when the part is machined and is tightly matched with the central hole, and is used for providing a positioning reference for drilling; the positioning shaft 2 can be adjusted to be matched with different holes on the positioning base plate 1 to process products with different specifications; the drill sleeve 5 is used for providing accurate machining guide for the drill bit; the supporting plate 6 is used for providing support for adjusting the angular position of the machined part.
The precise drilling fixture for the aluminum alloy end cover with the connecting ribs is used for precisely machining the precise holes in the surface of the aluminum alloy end cover with the connecting ribs through a common bench drill. Compared with the traditional method for clamping the aluminum alloy end cover with the connecting rib by drilling the surface, the clamping method adopts the end cover center positioning hole as a positioning reference, uses the connecting rib for angular positioning, and designs the angular positioning to be adjustable, thereby avoiding the problem of angular positioning error caused by the large tolerance of the surface of the casting of the connecting rib to the greatest extent.
The utility model has the advantages that: by adopting the design idea that the design reference and the positioning reference are unified, the original positioning error caused by the non-unified positioning reference can be effectively avoided. The adjustable angular positioning mode is adopted, so that the problem of angular positioning error caused by large surface tolerance of the casting of the connecting rib is avoided to the greatest extent. The verification proves that the size precision of the precise hole of the actually processed aluminum alloy end cover with the connecting rib reaches +/-0.04 mm, and the tolerance range of +/-0.05 mm of the design requirement is met. For the traditional clamping mode of the assembly fixture, the positioning precision is improved, the machining quality is guaranteed, meanwhile, the portable use is realized, the principle of minimizing the positioning of the foundation plate is adopted, and the weight of the whole jig fixture is only 0.61Kg. For the maximize reduce cost improvement anchor clamps availability factor, design 4 groups of locating holes and four locating pins on this take the accurate boring grab of splice bar aluminum alloy end cover, can satisfy the drilling processing of 4 this kind of take splice bar aluminum alloy end cover class parts simultaneously, realized the effect of "one presss from both sides four-purpose".
Drawings
FIG. 1 is a view of the external shape of a part to be machined;
FIG. 2 is a front view of a precision drilling fixture for an aluminum alloy end cover with a connecting rib;
FIG. 3 is a top view of the precision drilling fixture for the aluminum alloy end cover with the connecting ribs;
FIG. 4 is a three-dimensional axonometric view of a precision drilling fixture for aluminum alloy end covers with connecting ribs;
FIG. 5 is a schematic diagram of an aluminum alloy end cover precision drilling fixture with a connecting rib.
In the figure: 1-positioning foundation plate, 2-positioning shaft, 3-fastening bolt, 4-angular positioning adjusting bolt, 5-drilling sleeve and 6-supporting plate.
Detailed Description
The utility model discloses specific embodiment and step are as follows:
1) According to the size of the processed part, the positioning shaft 2 is selected, the positioning shaft 2 is installed in the positioning hole in the corresponding positioning base plate 1, and the positioning shaft is fastened by the fastening bolt 3.
2) And (3) placing the positioning shaft 2 which is installed on the positioning base plate 1 into the central positioning hole of the part, pressing the positioning shaft to be in complete contact with the bottom surface, and enabling the positioning base plate 1 to be in complete contact with the upper surface of the connecting rib of the processed part.
3) The length of the angular positioning adjusting bolt 4 is adjusted to enable the angular positioning adjusting bolt to be in complete contact with the side face of the connecting rib of the machined part, and whether the hole position of the drill bushing 5 is consistent with the position of a to-be-machined precision hole of the machined part or not is observed, so that the error of the installation position of the positioning shaft 2 on the positioning foundation plate 1 is prevented.
4) After confirming that the hole position of the drill bushing 5 is correct, the angular positioning adjusting bolt 4 is locked on the supporting plate 6 by using the fastening bolt 3.
5) The operator will be processed the part and take the accurate boring grab of splice bar aluminum alloy end cover and place on bench drill operation platform, use bench drill to carry out drilling processing according to drill bushing 5 position to the part of processing.
6) After the machining is finished, the fastening bolt 3 is loosened, the aluminum alloy end cover precision drilling fixture with the connecting ribs is detached from the part, and the precision holes of the part and metal chips in the drill bushing 5 are removed.
7) And (3) reinstalling the next part to be machined, wherein the installation and machining process refers to the steps 1) -6).
Claims (4)
1. The precise drilling clamp for the aluminum alloy end cover with the connecting ribs is characterized by comprising a positioning foundation plate (1), a positioning shaft (2), a fastening bolt (3), an angular positioning adjusting bolt (4), a drill bushing (5) and a supporting plate (6); one end of the positioning foundation plate (1) is sequentially provided with a plurality of positioning holes, and the positioning shaft (2) sequentially passes through the central positioning hole of the processed part and is fixed with a positioning hole on the positioning foundation plate (1); the other end of the positioning foundation plate (1) is provided with a hole for connecting a drill bushing (5), and the drill bushing (5) corresponds to the precise hole of the processed part; a supporting plate (6) is fixed on the lower surface of the positioning foundation plate (1), a threaded hole is formed in the supporting plate (6), and the angular positioning adjusting bolt (4) is in threaded engagement with the threaded hole; one end of the angular positioning adjusting bolt (4) is in contact with the side face of the connecting rib of the processed part, and the contact part of the angular positioning adjusting bolt and the supporting plate (6) is locked by the fastening bolt (3).
2. The precision drilling clamp for the aluminum alloy end cover with the connecting rib as recited in claim 1, wherein the number of the positioning holes is 4.
3. The precision drilling clamp for the aluminum alloy end cover with the connecting rib as recited in claim 1 or 2, wherein the positioning shaft (2) is fixed on the positioning base plate (1) through a fastening bolt (3).
4. The precision drilling clamp for the aluminum alloy end cover with the connecting rib is characterized in that after the angular positioning adjusting bolt (4) is in contact with the side face of the connecting rib of the processed part, the angular position of the processed part is adjusted through the angular positioning adjusting bolt (4), and further the drill sleeve (5) is consistent with the precision hole of the processed part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222675321.4U CN218396018U (en) | 2022-10-12 | 2022-10-12 | Precise drilling clamp for aluminum alloy end cover with connecting ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222675321.4U CN218396018U (en) | 2022-10-12 | 2022-10-12 | Precise drilling clamp for aluminum alloy end cover with connecting ribs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218396018U true CN218396018U (en) | 2023-01-31 |
Family
ID=85000974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222675321.4U Active CN218396018U (en) | 2022-10-12 | 2022-10-12 | Precise drilling clamp for aluminum alloy end cover with connecting ribs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218396018U (en) |
-
2022
- 2022-10-12 CN CN202222675321.4U patent/CN218396018U/en active Active
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