VTG blade bottom hole processing device

Abstract

The utility model is suitable for the technical field of machining, and provides a VTG blade bottom hole machining device which comprises a seat stand, a rack is installed on one side of the seat stand, a driving mechanism is installed on the rack, a grinding tool is installed at the output end of the driving mechanism, an indexing rotary table is further installed on the seat stand, and a chuck mechanism is installed on the indexing rotary table. The chuck mechanism adopts an air cylinder driving mode and can drive three groups of sliding chucks to synchronously move outwards to support an inner ring of the VTG blade to form fixation, and a bottom hole in the VTG blade is located outside the indexing turntable, so that when the bottom hole is polished, generated fines directly fall on the seat table or a collecting disc is further arranged on the seat table, and the grinding efficiency is greatly improved. Therefore, the device is convenient for cleaning fines generated by machining.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a VTG blade bottom hole processing device. Background Art

[0002] VTG blades, standing for Variable Turbine Geometry, are turbine blades with variable geometry. VTG blades are annular in shape, with a circle of bottom holes near the edge. Each hole houses a high-temperature-resistant vane for airflow direction adjustment. During VTG blade hole machining, the holes are first drilled, then the walls are polished with a grinding tool. Guide vanes are then fixed to the holes. Each guide vane is installed in a different orientation.

[0003] Because VTG blades have a large number of bottom holes, a pair of V-shaped fixtures are placed on a turntable during processing. The VTG blade is placed between the V-shaped fixtures, then the product's periphery is clamped. After polishing the hole wall, the turntable rotates a fixed angle to process the next hole. However, the fine metal chips generated during processing will remain on the turntable, making it difficult to clean the metal chips and the turntable. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a VTG blade bottom hole processing device, aiming to solve the above technical problems.

[0005] The utility model adopts the following technical solutions:

[0006] The VTG blade bottom hole processing device includes a base, a frame is installed on one side of the base, a driving mechanism is installed on the frame, a grinding tool is installed on the output end of the driving mechanism, and a dividing turntable is also installed on the base, and a chuck mechanism is installed on the dividing turntable. The chuck mechanism includes upper and lower fixed plates, and a rotating shaft is provided at the center position between the upper and lower fixed plates, and a rotating arm is provided on the rotating shaft, wherein a cylinder is also hinged on the lower fixed plate, and the output end of the cylinder is hinged to the rotating arm, and a triangular plate is fixed on the top of the rotating shaft, and three groups of sliding chucks are evenly provided on the upper fixed plate, and an intermediate plate is hinged between the sliding chuck and the triangular plate.

[0007] Furthermore, the sliding chuck includes a short rail radially fixed on the upper fixed plate, a matching moving block is installed on the short rail, a top block is locked with a bolt on the top of the moving block, and the outer side surface of the top block is a circular arc surface.

[0008] Furthermore, the upper and lower fixing plates are welded together via a circle of ribs.

[0009] Furthermore, the driving mechanism includes a column fixed on one side of the base, a back plate fixed on the column, a driving cylinder on the top of the back plate, a slide rail slider assembly installed on the back plate, a carrier plate fixed on the slider of the slide rail slider assembly, the driving cylinder is connected to the carrier plate, a belt box and a shaft connector are provided on the carrier plate, a driving motor is provided on the belt box, the shaft connector is connected to the belt box, and the grinding tool is installed on the shaft connector.

[0010] Furthermore, there is an electric control box on the back of the base, and a button box is also provided on the top of the front of the base.

[0011] Furthermore, the top outer ring of the upper fixing plate is provided with three wear-resistant rubber pads.

[0012] The beneficial effects of the present utility model are as follows: the present device is designed with a chuck mechanism in combination with the structural characteristics of the VTG blade, which drives the fixed angle hole to rotate through the indexing turntable; the chuck mechanism adopts a cylinder drive mode, which can drive three sets of sliding chucks to move outward synchronously, supporting the inner ring of the VTG blade to form a fixed shape, and the bottom hole on the VTG blade is located outside the indexing turntable, so when grinding the bottom hole, the fine chips generated fall directly on the seat or a collection tray can be further set on the seat, so the present device is convenient for cleaning the fine chips generated by processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a VTG blade bottom hole processing device provided by an embodiment of the present utility model;

[0014] Figure 2 This is a structural diagram of the chuck mechanism provided by an embodiment of the utility model;

[0015] Figure 3 It is a cross-sectional view of the chuck mechanism provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0018] like Figure 1-3As shown, the VTG blade bottom hole processing device provided in this embodiment includes a base 1, a frame 2 is installed on one side of the base 1, a driving mechanism 3 is installed on the frame 2, and a grinding tool 4 is installed on the output end of the driving mechanism 3. The base 1 is also equipped with a dividing turntable 5, and the dividing turntable 5 is equipped with a chuck mechanism 6. The chuck mechanism 6 includes upper and lower fixed plates, and a rotating shaft 61 is provided at the center position between the upper and lower fixed plates. A rotating arm 62 is provided on the rotating shaft 61, wherein a cylinder 64 is further hinged on the lower fixed plate 63, and the output end of the cylinder 65 is hinged to the rotating arm 62. A triangular plate 65 is fixed to the top of the rotating shaft 61, and three groups of sliding chucks 67 are evenly arranged on the upper fixed plate 66. An intermediate plate 68 is hinged between the sliding chuck 67 and the triangular plate 65. In the figure, the upper and lower fixed plates are connected as a whole by a circle of ribs welded 69.

[0019] In this structure, there is an electric control box 7 on the back of the base 1, and a button box 8 is also provided on the top of the front of the base 1. The drive mechanism and the chuck mechanism are operated by operating the corresponding buttons on the button box 8. First, the VTG blade is placed on the upper fixed plate of the chuck mechanism, and the three sliding chucks are located on the inner ring of the product. Start the cylinder, and the cylinder pushes the rotating shaft to rotate through the rotating arm, thereby driving the triangle plate to rotate. Under the action of the triangle plate and the middle plate, the three groups of sliding chucks move synchronously outward along the radial direction, so that the inner ring of the product can be stably supported, thereby completing the positioning and fixation of the product. As shown in the figure, since the bottom hole of the product is located on the outer ring of the product, after the product is fixed, the dividing turntable is smaller than the VTG blade, so the fine chips generated by grinding will fall on the base. Specifically, a collection tray or a blanking channel can also be provided on the base to realize the collection of fine chips. Prevent fine chips from falling on the turntable, which is inconvenient to clean.

[0020] As a specific structure of the driving mechanism 3, it includes a column 31 fixed on one side of the base 1, a back plate 32 fixed on the column 31, a driving cylinder 33 on the top of the back plate 32, a slide rail slider assembly 34 installed on the back plate 32, a carrier plate 35 fixed on the slider of the slide rail slider assembly 34, the driving cylinder 33 is connected to the carrier plate 35, a belt box 36 and a shaft connector 37 are provided on the carrier plate 35, a driving motor 38 is provided on the belt box 36, the shaft connector 37 is connected to the belt box 36, and the grinding tool 4 is installed on the shaft connector 37.

[0021] In this structure, the slide rail and slider assembly plays a vertical guiding role. The driving cylinder slowly drives the carrier plate to slide downward. At the same time, the driving motor drives the shaft connector to rotate through the belt box, thereby driving the grinding tool to rotate, forming a grinding process for the bottom hole.

[0022] This embodiment also features a sliding chuck 67, comprising a short rail 671 radially fixed to the upper fixed plate. A matching moving block 672 is mounted on the rail 671. A top block 673 is bolted to the top of the moving block 672, and the outer side of the top block 673 is a circular arc surface. The top block is removable, and its arc surface is designed based on the actual product inner ring size and curvature. This allows for designing top blocks of varying lengths, accommodating a wide range of applications.

[0023] Finally, in this structure, the top outer ring of the upper fixed plate also has three wear-resistant rubber pads 10, and the rubber pads 10 are detachable to prevent the bottom surface of the product from rubbing against the top surface of the outer ring plate of the upper fixed plate to damage the product.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A VTG blade bottom hole processing device, comprising a base, a frame mounted on one side of the base, a driving mechanism mounted on the frame, and a grinding tool mounted on the output end of the driving mechanism, characterized in that: The base is also provided with a dividing turntable, on which a chuck mechanism is provided, and the chuck mechanism comprises an upper and lower fixed plate, a rotating shaft is provided at the center position between the upper and lower fixed plates, and a rotating arm is provided on the rotating shaft, wherein a cylinder is hinged on the lower fixed plate, and the output end of the cylinder is hinged to the rotating arm, a triangular plate is fixed on the top end of the rotating shaft, and three groups of sliding chucks are evenly provided on the upper fixed plate, and an intermediate plate is hinged between the sliding chuck and the triangular plate.

2. The VTG blade bottom hole processing device according to claim 1, characterized in that: The sliding chuck comprises a short rail radially fixed on an upper fixed plate, a matching moving block is mounted on the short rail, a top block is fastened with a bolt on the top of the moving block, and the outer side surface of the top block is an arc surface.

3. The VTG blade bottom hole processing device according to claim 2, characterized in that: The upper and lower fixing plates are welded together through a circle of ribs.

4. The VTG blade bottom hole processing device according to claim 3, characterized in that: The driving mechanism includes a column fixed on one side of the base, a back plate fixed on the column, a driving cylinder on the top of the back plate, a slide rail slider assembly installed on the back plate, a carrier plate fixed on the slider of the slide rail slider assembly, the driving cylinder is connected to the carrier plate, a belt box and a shaft connector are provided on the carrier plate, a driving motor is provided on the belt box, the shaft connector is connected to the belt box, and the grinding tool is installed on the shaft connector.

5. The VTG blade bottom hole processing device according to claim 4, characterized in that: An electric control box is also provided on the back of the base, and a button box is also provided on the top of the front of the base.

6. The VTG blade bottom hole processing device according to any one of claims 1 to 5, characterized in that: The top outer ring of the upper fixing plate is also provided with three wear-resistant rubber pads.

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