CN210648885U - Aeroengine wheel disk mortise linear cutting indexing fixture - Google Patents
Aeroengine wheel disk mortise linear cutting indexing fixture Download PDFInfo
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- CN210648885U CN210648885U CN201921359982.8U CN201921359982U CN210648885U CN 210648885 U CN210648885 U CN 210648885U CN 201921359982 U CN201921359982 U CN 201921359982U CN 210648885 U CN210648885 U CN 210648885U
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Abstract
The engine wheel disc mortise linear cutting indexing fixture comprises a bottom plate, a trimming pin, an angle positioning block, a rotating mechanism, an indexing mechanism and a tool setting block; the indexing mechanism consists of an indexing disc and an indexing positioning block, the indexing positioning block is connected to the bottom plate through a hexagon socket head cap screw, and indexing positioning grooves with the same number as the wheel disc mortises are formed in the outer ring of the indexing disc; the upper end surface of the dividing plate is provided with a positioning spigot for positioning the engine wheel disc, an anti-rotation positioning pin hole and a pressing screw hole for pressing the engine wheel disc; the angle positioning block comprises a left angle positioning block and a right angle positioning block, and grooves for reducing the contact area and pressing grooves fixed with a machine tool are arranged on the positioning surfaces of the left angle positioning block and the right angle positioning block and are connected to the lower surface of the clamp bottom plate through hexagon socket head cap screws; the rotating mechanism is composed of a radial ball bearing and a central positioning pin, and the tool setting block is connected to the left angle positioning block through a hexagon socket head cap screw and used for radial and lateral positioning tool setting of the engine wheel disc mortise.
Description
Technical Field
The utility model relates to an engine wheel dish indexing fixture for keyway line cutting.
Background
The wheel disc mainly refers to a fan disc, a compressor disc and a turbine disc, is a core rotating key part of an engine, and is mostly in severe environments of high temperature, high pressure, high rotating speed, airflow alternation and the like under working conditions, so that the wheel disc is widely made of titanium alloy, high-temperature alloy and other high-performance metal materials with poor machinability.
The wheel disc rim is provided with a mortise for mounting the blades, the mortise is shaped like a fir tree or a dovetail, the number of the mortises is large, the position precision is high, and the size requirement is strict.
The traditional rough machining of the mortise mainly adopts broaching and numerical control milling, and has the following defects:
the line cutting indexing fixture suitable for rough machining of the wheel disc mortise is developed, special equipment such as expensive five-axis numerical control and the like is not required to be occupied, a special cutter is not required to be customized, the design and manufacturing cost of the cutter is saved, the working steps in the working procedure are reduced, and the mortise machining period can be effectively shortened on the basis of ensuring the machining quality.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides an workable, the line cutting graduation anchor clamps that are used for engine wheel disc tongue-and-groove rough machining that easily detect.
The utility model discloses anchor clamps realize through following technical scheme: the engine wheel disc mortise linear cutting indexing fixture comprises a bottom plate, a trimming pin, an angle positioning block, a rotating mechanism, an indexing mechanism and a tool setting block;
the indexing mechanism consists of an indexing disc and an indexing positioning block, the indexing positioning block is connected to the bottom plate through a hexagon socket head cap screw, and indexing positioning grooves with the same number as the wheel disc mortises are formed in the outer ring of the indexing disc; the upper end surface of the dividing plate is provided with a positioning spigot for positioning the engine wheel disc, an anti-rotation positioning pin hole and a pressing screw hole for pressing the engine wheel disc; the dividing plate is firmly sucked with the bottom plate;
the angle positioning block comprises a left angle positioning block and a right angle positioning block, and grooves for reducing the contact area and pressing grooves fixed with a machine tool are arranged on the positioning surfaces of the left angle positioning block and the right angle positioning block and are connected to the lower surface of the clamp bottom plate through hexagon socket head cap screws;
the rotary mechanism is composed of a radial ball bearing and a central positioning pin, the central positioning pin is inserted into an inner ring of the radial ball bearing and is fixed with the clamp bottom plate, and an outer ring of the radial ball bearing is fixed with the index plate through interference;
the tool setting block is connected to the left angle positioning block through an inner hexagonal screw and used for radial and lateral positioning tool setting of the engine wheel disc mortise.
When the fixture is used for linearly cutting the wheel disc mortise, the wheel disc is positioned on the positioning spigot on the upper end face of the dividing disc, the wheel disc is circumferentially positioned in an anti-rotating mode through the trimming pin, then the wheel disc is tightly pressed on the dividing disc through the bolt, and the position of the first mortise is aligned through the feeler block. And (4) processing the mortises at different positions by only inserting the indexing positioning block into the corresponding positioning groove of the outer ring of the indexing disc.
A lifting screw hole is formed in the center of the upper end of the central positioning pin;
the lower end face of the dividing plate is also provided with a ring groove for reducing the contact area.
The left and right angle positioning blocks are wedge-shaped blocks, and the clamp bottom plate is fixed on the machine tool in an inclined plane structure. The indexing disc of the linear cutting indexing fixture can be conveniently rotated for indexing, so that the engine wheel disc fixed on the indexing disc can be subjected to mortise linear cutting machining.
If the left and right angle positioning blocks have deviation in the machining process, the problem can be solved only by filling corresponding feelers between the left and right angle positioning blocks and the positioning surface of the bottom plate according to actual difference values during assembly, and the left and right angle positioning blocks do not need to be reworked.
When the engine wheel disc mortise is a spatial angle, only one angle positioning block needs to be added to the bottom surfaces of the left and right angle positioning blocks again.
The utility model discloses beneficial effect: the processing is easy, easy to detect, the clamping is quick, not only does not need professional equipment, special cutter in traditional processing, has reduced the process step in the process, can also effectively shorten rim plate tongue-and-groove processing cycle on the basis of guaranteeing processingquality.
Drawings
Fig. 1 is a front view of the engine wheel disc mortise line cutting indexing fixture of the present invention;
fig. 2 is a side view of the engine wheel disc mortise line cutting indexing fixture of the present invention;
FIG. 3 is a 3D view of the left angular positioning block 3;
fig. 4 is a 3D diagram of the right angle positioning block 7 of the present invention;
fig. 5 is a 3D diagram of the bottom plate 8 of the present invention;
fig. 6 is a 3D diagram of the index plate 4 of the present invention;
fig. 7 is a 3D view of the center positioning pin 6 of the present invention;
fig. 8 is a 3D diagram of the indexing positioning block 11 of the present invention;
fig. 9 is a 3D diagram of the feeler block 1 of the present invention.
Detailed Description
The present clip is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, 1 pair of blocks, 2 a trimming pin, 3 a left angle positioning block, 4 an indexing disc, 5 a radial ball bearing, 6 a center positioning pin, 7 a right angle positioning block) 8 a bottom plate, 9 an inner hexagon screw M8, 10 an inner hexagon screw M6, and 11 an indexing positioning block.
The utility model discloses anchor clamps essential element includes bottom plate 8, edging round pin 2, angle locating piece, rotary mechanism, indexing mechanism and feeler block 1. The rotary mechanism of the clamp is composed of a radial ball bearing and a center positioning pin, the center positioning pin is connected with a clamp bottom plate and an inner ring of the radial ball bearing through interference of a pin shaft of the center positioning pin, an outer ring of the radial ball bearing is connected with an index plate through interference, and a lifting screw hole is formed in the center of the upper end of the center positioning pin.
The indexing mechanism of the clamp consists of an indexing disc and an indexing positioning block, the indexing positioning block is connected to the bottom plate of the clamp through an inner hexagon screw, and indexing positioning grooves with the same number as the wheel disc mortises are formed in the outer ring of the indexing disc; the upper end surface of the dividing plate is provided with a positioning spigot for positioning the engine wheel disc, an anti-rotation positioning pin hole and a pressing screw hole for pressing the engine wheel disc; in order to prevent the dividing disc from being firmly sucked with the bottom plate after being stained with cutting fluid, the lower end surface of the dividing disc is also provided with a ring groove for reducing the contact area.
Referring to fig. 1, 2, 3 and 4, the angle positioning block of the clamp is composed of a left angle positioning block 3 and a right angle positioning block 7. Machine tool pressing grooves (used for pressing the clamp on the machine tool) are formed in the left angle positioning block 3 and the right angle positioning block 7; in order to reduce the processing difficulty and the positioning accuracy of the angle positioning block, grooves for reducing the positioning contact area are further formed in the left angle positioning block 3 and the right angle positioning block 7, and the left angle positioning block and the right angle positioning block are connected to the clamp bottom plate 8 through socket head cap screws 9.
Referring to fig. 1 and 7, the rotating mechanism of the clamp is composed of a radial ball bearing 5 and a center positioning pin 6. The center positioning pin 6 is connected with the clamp bottom plate 8 and the inner ring of the radial ball bearing 5 through the interference of the pin shaft of the center positioning pin, and the outer ring of the radial ball bearing 5 is connected with the index plate 4 through the interference of the radial ball bearing 5. In order to carry conveniently, the center of the center positioning pin 6 is provided with a lifting screw hole.
Referring to fig. 1, 2, 6 and 8, the indexing mechanism of the clamp is composed of an indexing disc 4 and an indexing positioning block 11. The outer ring of the dividing plate 4 is provided with dividing positioning grooves with the same number as the wheel disc mortises; the upper end surface is provided with a positioning spigot for positioning the engine wheel disc, an anti-rotation positioning pin hole and a pressing screw hole for pressing the engine wheel disc; in order to prevent the indexing disc 4 from being firmly sucked with the bottom plate 8 and difficult to rotate after the clamp is stained with cutting fluid in the machining process, the lower end face of the indexing disc 4 is also provided with a ring groove for reducing the positioning contact area. The lower end of the indexing positioning block 11 is positioned in a positioning groove of the bottom plate 8 and is connected to the clamp bottom plate 8 through a socket head cap screw 10; the indexing positioning block 11 is provided with a protrusion matched with the positioning groove, and the upper end of the indexing positioning block 11 is positioned in the indexing positioning groove on the outer ring of the indexing disc 4.
Referring to fig. 1, 2 and 9, the tool setting block 1 of the fixture is connected to the side surface of the left angle positioning block 3 through a hexagon socket head cap screw 9 and used for radial and lateral tool setting of the engine wheel disc mortise.
Above-mentioned the utility model discloses anchor clamps when using, only need be located the engine wheel dish on the location tang of graduated disk 4 up end to prevent changeing the location through the circumference that edging round pin 2 carried out the engine wheel dish, reuse bolt compresses tightly the engine wheel dish on graduated disk 4, then with the feeler block 1 to the position of the first tongue-and-groove of sword alignment wheel dish can. And after the first mortise is machined, the indexing positioning block 11 is detached, the indexing disc 4 is rotated to enable the corresponding second indexing positioning groove on the indexing disc 4 to be aligned to the positioning groove on the bottom plate 8, and then the indexing positioning block 11 is installed, so that the second mortise of the wheel disc can be machined. And repeating the steps until all the mortises of the engine wheel disc are completely processed.
Above-mentioned the utility model discloses the locating surface of left angle locating piece 3, right angle locating piece 7 of anchor clamps if the deviation appears in the course of working, only need when the assembly according to actual difference fill up corresponding clearance gauge just can solve between left and right angle locating piece and bottom plate 8 locating surface to left and right angle locating piece need not reworking again.
When the engine wheel disc mortise is a space angle (the space angle is decomposed into the sub-angles in two directions), only one angle positioning block needs to be added on the bottom surfaces of the left angle positioning block 3 and the right angle positioning block 7, so that the engine wheel disc mortise is simple to process and easy to detect, and is extremely convenient to adjust.
Claims (6)
1. The engine wheel disc mortise linear cutting indexing fixture is characterized by comprising a bottom plate, a trimming pin, an angle positioning block, a rotating mechanism, an indexing mechanism and a feeler block; the indexing mechanism consists of an indexing disc and an indexing positioning block, the indexing positioning block is connected to the bottom plate through a hexagon socket head cap screw, and indexing positioning grooves with the same number as the wheel disc mortises are formed in the outer ring of the indexing disc; the upper end surface of the dividing plate is provided with a positioning spigot for positioning the engine wheel disc, an anti-rotation positioning pin hole and a pressing screw hole for pressing the engine wheel disc; the dividing plate is firmly sucked with the bottom plate;
the angle positioning block comprises a left angle positioning block and a right angle positioning block, and grooves for reducing the contact area and pressing grooves fixed with a machine tool are arranged on the positioning surfaces of the left angle positioning block and the right angle positioning block and are connected to the lower surface of the clamp bottom plate through hexagon socket head cap screws;
the rotary mechanism is composed of a radial ball bearing and a central positioning pin, the central positioning pin is inserted into an inner ring of the radial ball bearing and is fixed with the clamp bottom plate, and an outer ring of the radial ball bearing is fixed with the index plate through interference;
the tool setting block is connected to the left angle positioning block through an inner hexagonal screw and used for radial and lateral positioning tool setting of the engine wheel disc mortise.
2. The engine wheel disk mortise line cutting indexing fixture of claim 1, wherein a lifting screw hole is formed in the center of the upper end of the center positioning pin.
3. The engine wheel disk keyway wire-cutting indexing fixture of claim 1, wherein the lower end face of the indexing disk is further provided with a ring groove that reduces the contact area.
4. The engine wheel disk keyway line cutting indexing fixture of claim 1, wherein the left and right angle locating blocks are wedge-shaped blocks, securing the fixture base plate to the machine tool in a ramp configuration.
5. The engine wheel disk keyway line cutting indexing fixture of claim 1, wherein the difference in assembly of the left and right angle locating blocks is addressed by padding corresponding feelers between the left and right angle locating blocks and the bottom plate locating surface.
6. The engine wheel disk mortise line cutting indexing fixture of claim 1, wherein when the engine wheel disk mortise is in a spatial angle, an angle positioning block needs to be added to the bottom surface of each of the left and right angle positioning blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359982.8U CN210648885U (en) | 2019-08-20 | 2019-08-20 | Aeroengine wheel disk mortise linear cutting indexing fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359982.8U CN210648885U (en) | 2019-08-20 | 2019-08-20 | Aeroengine wheel disk mortise linear cutting indexing fixture |
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| Publication Number | Publication Date |
|---|---|
| CN210648885U true CN210648885U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921359982.8U Active CN210648885U (en) | 2019-08-20 | 2019-08-20 | Aeroengine wheel disk mortise linear cutting indexing fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681099A (en) * | 2021-09-07 | 2021-11-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal tool and method for cutting and machining ring segment parts |
-
2019
- 2019-08-20 CN CN201921359982.8U patent/CN210648885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681099A (en) * | 2021-09-07 | 2021-11-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal tool and method for cutting and machining ring segment parts |
| CN113681099B (en) * | 2021-09-07 | 2024-01-09 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal tool and method for cutting ring segment parts |
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