A quick-change core shaft for compressor volute drilling

Abstract

The application relates to the field of compressor shell processing equipment technology, in particular to a quick-change core shaft for drilling a compressor volute, which comprises a bottom plate, a supporting column is arranged on the bottom plate, a cross-shaped fixing frame is connected to the top of the supporting column, the cross-shaped fixing frame is arranged in a direction parallel to the bottom plate, sliding blocks are slidingly arranged on the cross-shaped fixing frame, one sliding block is arranged on each of the four edges of the cross-shaped fixing frame, sliding grooves are arranged on the cross-shaped fixing frame for the sliding blocks, a driving assembly for driving the four sliding blocks to move synchronously outward or inward is arranged on the bottom plate, supporting blocks are connected to the sliding blocks, the supporting blocks comprise extruding parts for extruding the hole walls of the compressor shell shaft holes and supporting parts for supporting the compressor shell, the extruding parts are arranged above the supporting parts in a stepped mode, the extruding parts and the supporting parts are integrally arranged, and the bottom of each supporting block is slidingly attached to the surface of the cross-shaped fixing frame. The application has the effects of enabling the clamp to be adapted to compressor shells of different specifications and reducing the processing cost of the compressor shell.

Description

Technical Field

[0001] This utility model relates to the field of compressor housing processing equipment technology, and in particular to a quick-change mandrel for drilling compressor volutes. Background Technology

[0002] The compressor volute is an important component of the exhaust gas turbocharger. Its function is to diffuse and collect the fresh air drawn in by the compressor impeller inside the compressor volute and input it into the intake manifold, thereby increasing the air pressure entering the engine.

[0003] Traditional fixtures can only be used to position compressor volutes of one type. Since there are many types of compressor volutes, the original processing method requires many fixtures to meet production needs, thus increasing processing costs. Utility Model Content

[0004] In order to enable the fixture to be adapted to compressor housings of different specifications and reduce the processing cost of compressor housings, this application provides a quick-change mandrel for drilling compressor volutes.

[0005] The quick-change mandrel for drilling compressor volutes provided in this application adopts the following technical solution: A quick-change mandrel for drilling compressor volutes includes a base plate with a support column on the base plate. A cross-shaped fixing frame is connected to the top of the support column and is arranged parallel to the base plate. A slider is slidably mounted on the cross-shaped fixing frame, with one slider on each of the four sides of the cross-shaped fixing frame. The cross-shaped fixing frame has grooves for the sliders to slide. A drive assembly for driving the four sliders to move synchronously outward or inward is provided on the base plate. A support block is connected to the slider. The support block includes a pressing part that presses against the wall of the compressor housing shaft hole and a support part that supports the compressor housing. The pressing part is located above the support part and is stepped. The pressing part and the support part are integrally formed. The bottom of the support block slidably fits against the surface of the cross-shaped fixing frame.

[0006] Preferably, the drive assembly includes a push cylinder, a lifting plate, a first hinge seat, a second hinge seat, a connecting rod, and a pin. The push cylinder is mounted on the base plate and is arranged in a direction perpendicular to the base plate. The lifting plate is connected to the end of the piston rod of the push cylinder and is arranged in a direction parallel to the base plate. The first hinge seat is connected to the lifting plate, and four first hinge seats are provided corresponding to four sliders. One second hinge seat is connected to each of the four sliders. One end of the connecting rod is connected to the first hinge seat through a pin, and the other end is connected to the second hinge seat through a pin. The connecting rod is inclined.

[0007] Preferably, the slider is arranged in an inverted "T" shape, and the surface of the slider slides against the surface of the cross-shaped fixing frame.

[0008] Preferably, a fixing bolt is connected between the slider and the support block, the support block has a blind hole for the fixing bolt to pass through, and the slider has a threaded hole for the fixing bolt to connect.

[0009] Preferably, the surface of the extrusion section that contacts the wall of the compressor housing shaft hole is an arc-shaped surface.

[0010] Preferably, a protective cover is bolted to the base plate. The protective cover is cylindrical and covers the outside of the drive assembly.

[0011] In summary, this application includes the following beneficial technical effects: This utility model provides a quick-change mandrel for drilling compressor volutes. By controlling the synchronous radial movement of four sliders through a drive assembly, the pressing and supporting parts of the support block can be dynamically adjusted according to the shaft hole size of different compressor volutes. This allows a single fixture to adapt to multiple product specifications, significantly reducing the number of dedicated fixtures. As a result, the fixture can be adapted to compressor housings of different specifications, thus reducing the processing cost of compressor housings.

[0012] This utility model provides a quick-change mandrel for drilling compressor volutes. The cylinder-connecting rod linkage mechanism converts the vertical push-pull force into the synchronous radial motion of the slider, simplifying the power transmission path, providing fast response speed, short clamping / releasing action cycle, and improving batch processing efficiency.

[0013] This utility model provides a quick-change mandrel for drilling compressor volutes. The arc-shaped extrusion part fits against the compressor housing shaft hole wall, evenly distributing the clamping force, which improves positioning accuracy and prevents damage to the workpiece surface.

[0014] This utility model provides a quick-change mandrel for drilling compressor volutes. The slider and support block are detachably connected by bolts, and different sizes of support block modules can be replaced according to processing requirements. There is no need to replace the entire mandrel, which shortens the changeover time and improves the flexible production capacity of the production line.

[0015] This utility model provides a quick-change mandrel for drilling compressor volutes. A cylindrical protective cover covers the drive assembly, effectively isolating machining debris and coolant from intrusion and extending the service life of moving parts such as cylinders and connecting rods. The overall layout is integrated between the base plate and the cross-shaped fixing frame, which has high space utilization and is suitable for the narrow working environment of machine tools. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the quick-change mandrel used for drilling compressor volutes in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the internal structure of the protective cover in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the slider in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Support column; 12. Protective cover; 2. Cross-shaped fixing frame; 21. Slider; 3. Drive assembly; 31. Push cylinder; 32. Lifting plate; 33. First hinge seat; 34. Second hinge seat; 35. Connecting rod; 36. Pin; 4. Support block; 41. Extrusion part; 42. Support part; 5. Fixing bolt. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] This application discloses a quick-change mandrel for drilling holes in a compressor volute. (Refer to...) Figure 1 , Figure 2 and Figure 3The quick-change mandrel for drilling compressor volutes includes a base plate 1, a support column 11 on the base plate 1, a cross-shaped fixing frame 2 connected to the top of the support column 11, the cross-shaped fixing frame 2 being arranged parallel to the base plate 1, a slider 21 slidably mounted on the cross-shaped fixing frame 2, with one slider 21 on each of the four sides of the cross-shaped fixing frame 2, and a groove for the slider 21 to slide on the cross-shaped fixing frame 2. A drive assembly 3 for driving the four sliders 21 to move synchronously outward or inward is provided on the base plate 1, and a support block 4 is connected to the slider 21. The support block 4 includes a pressing part 41 for pressing the wall of the compressor housing shaft hole and a support part 42 for supporting the compressor housing. The pressing part 41 is located above the support part 42 and is stepped. The pressing part 41 and the support part 42 are integrally formed, and the bottom of the support block 4 slides against the surface of the cross-shaped fixing frame 2.

[0021] By controlling the synchronous radial movement of the four sliders 21 through the drive component 3, the extrusion part 41 and the support part 42 of the support block 4 can be dynamically adjusted according to the shaft hole size of different compressor volutes, so that a single fixture can be adapted to multiple specifications of products, significantly reducing the number of special fixtures.

[0022] The drive assembly 3 includes a push cylinder 31, a lifting plate 32, a first hinge seat 33, a second hinge seat 34, a connecting rod 35, and a pin 36. The push cylinder 31 is mounted on the base plate 1 and is arranged in a direction perpendicular to the base plate 1. The lifting plate 32 is connected to the end of the piston rod of the push cylinder 31 and is arranged in a direction parallel to the base plate 1. The first hinge seat 33 is connected to the lifting plate 32 and has four corresponding to the four sliders 21. The second hinge seat 34 is connected to each of the four sliders 21. One end of the connecting rod 35 is connected to the first hinge seat 33 through the pin 36, and the other end is connected to the second hinge seat 34 through the pin 36. The connecting rod 35 is inclined.

[0023] The cylinder-connecting rod 35 linkage mechanism converts the vertical push and pull force into the synchronous radial motion of the slider 21, simplifying the power transmission path, providing fast response speed, short clamping / releasing action cycle, and improving batch processing efficiency.

[0024] The slider 21 is arranged in an inverted "T" shape, and the surface of the slider 21 slides against the surface of the cross bracket 2. This arrangement ensures the coaxiality and stability of the slider 21 when it moves, and avoids skewing.

[0025] A fixing bolt 5 connects the slider 21 and the support block 4. The support block 4 has a blind hole for the fixing bolt 5 to pass through, and the slider 21 has a threaded hole for the fixing bolt 5 to connect. The slider 21 and the support block 4 are connected by bolts. Different sizes of support block 4 modules can be replaced according to processing requirements without replacing the entire mandrel, which shortens the changeover time and improves the flexible production capacity of the production line.

[0026] The surface of the extrusion part 41 that contacts the wall of the compressor housing shaft hole is an arc-shaped surface. The arc-shaped surface of the extrusion part 41 fits against the wall of the compressor housing shaft hole, evenly distributing the clamping force, which improves the positioning accuracy and prevents damage to the workpiece surface.

[0027] A protective cover 12 is bolted to the base plate 1. The protective cover 12 is in the shape of a round tube and covers the outside of the drive assembly 3. The round tube protective cover 12 covers the drive assembly 3, effectively isolating machining debris and coolant from intrusion, and extending the service life of moving parts such as cylinders and connecting rods 35.

[0028] The implementation principle of a quick-change mandrel for drilling compressor volutes according to an embodiment of this application is as follows: During operation, the compressor housing is placed on the support part 42 of the support block 4, and the extrusion part 41 is inserted into the shaft hole of the compressor housing. Then, the lifting plate 32 is pushed up by the push cylinder 31. During the upward movement of the lifting plate 32, the connecting rod 35 is driven to rotate outward. The connecting rod 35 pushes the slider 21 to move outward in the slide groove, so that the four support blocks 4 expand outward. The extrusion part 41 is used to press and fix the shaft hole of the compressor housing.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A quick-change mandrel for drilling holes in a compressor volute, characterized in that: Includes a base plate (1), on which a support column (11) is provided. A cross-shaped fixing frame (2) is connected to the top of the support column (11). The cross-shaped fixing frame (2) is arranged in a direction parallel to the base plate (1). A slider (21) is slidably arranged on the cross-shaped fixing frame (2). The slider (21) is provided on each of the four sides of the cross-shaped fixing frame (2). The cross-shaped fixing frame (2) has a groove for the slider (21) to slide. The base plate (1) is provided with a groove for... A drive assembly (3) drives four sliders (21) to move outward or inward synchronously. A support block (4) is connected to the slider (21). The support block (4) includes a compression part (41) that compresses the wall of the compressor housing shaft hole and a support part (42) that supports the compressor housing. The compression part (41) is located above the support part (42) and is set in a stepped shape. The compression part (41) and the support part (42) are integrally formed. The bottom of the support block (4) slides against the surface of the cross fixing frame (2).

2. The quick-change mandrel for drilling compressor volutes according to claim 1, characterized in that: The drive assembly (3) includes a push cylinder (31), a lifting plate (32), a first hinge seat (33), a second hinge seat (34), a connecting rod (35), and a pin (36). The push cylinder (31) is mounted on the base plate (1) and is arranged in a direction perpendicular to the base plate (1). The lifting plate (32) is connected to the end of the piston rod of the push cylinder (31) and is arranged in a direction parallel to the base plate (1). The first hinge seat (33) is connected to the lifting plate (32) and is provided with four first hinge seats (33) corresponding to four sliders (21). The second hinge seat (34) is connected to one of the four sliders (21). One end of the connecting rod (35) is connected to the first hinge seat (33) through the pin (36), and the other end is connected to the second hinge seat (34) through the pin (36). The connecting rod (35) is inclined.

3. A quick-change mandrel for drilling compressor volutes according to claim 1, characterized in that: The slider (21) is arranged in an inverted "T" shape, and the surface of the slider (21) slides against the surface of the cross-shaped fixing frame (2).

4. A quick-change mandrel for drilling compressor volutes according to claim 1, characterized in that: A fixing bolt (5) is connected between the slider (21) and the support block (4). The support block (4) has a blind hole through which the fixing bolt (5) passes, and the slider (21) has a threaded hole for the fixing bolt (5) to be connected.

5. A quick-change mandrel for drilling compressor volutes according to claim 1, characterized in that: The surface of the extrusion part (41) that contacts the wall of the compressor housing shaft hole is an arc-shaped surface.

6. A quick-change mandrel for drilling compressor volutes according to claim 1, characterized in that: A protective cover (12) is bolted to the base plate (1). The protective cover (12) is arranged in a cylindrical shape and covers the outside of the drive assembly (3).

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