Blade mounting hole boring device

Abstract

The utility model belongs to the technical field of mechanical design, and particularly relates to a blade mounting hole boring device which comprises a framework, N bases, N lower dies, N upper dies and positioning pins. The framework is of a frame type structure, and the N bases are fixed to the framework through fixing pins in the length direction. A lower die is fixed on each base through a bolt, and an upper die is fixed on the lower die through a bolt; the upper end face of the lower die and the lower end face of the upper die are provided with positioning cavities following the shape of the paddle; a paddle to be machined is fixed through the N upper dies and the N lower dies; the positioning pin is inserted into the primary hole of the mounting hole of the blade, and the mounting hole of the blade is positioned and aligned by detecting the positioning pin.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical design, and particularly relates to a boring processing device for blade mounting holes. Background Art

[0002] A composite material blade has a maximum outer dimension of δ39mm×2890mm×194.9mm, and its structure is as Figure 1 shown. At the mounting end of the blade, there are two mounting holes φ120 +0.018 mm, a total of 2 places.

[0003] The original processing scheme for the blade mounting holes is to clamp and align the blade by adding aluminum pads at the bottom of the blade, and then perform boring processing by a numerical control machine tool. Although this method can ensure the accuracy, relative position and relative angle of the holes on the product, the product clamping is difficult, the clamping time is long and the clamping efficiency is low. Summary of the Utility Model

[0004] Purpose of the utility model: To provide a boring processing device for blade mounting holes, which replaces the pad adjustment clamping with a processing device clamping, solves the problems of difficult clamping, long clamping time and low clamping efficiency, and at the same time ensures the dimensional accuracy, relative position and relative angle of the product mounting holes.

[0005] Technical Solution:

[0006] A boring processing device for blade mounting holes includes: a framework, N bases, N lower dies, N upper dies, and positioning pins;

[0007] The framework is of a frame structure, and N bases are fixed on the framework along the length direction through fixing pins;

[0008] One lower die is fixed on each base through bolts, and one upper die is fixed on the lower die through bolts; the upper end face of the lower die and the lower end face of the upper die are provided with positioning cavities conforming to the shape of the blade;

[0009] The blade to be processed is fixed by N upper dies and lower dies;

[0010] The positioning pin is inserted into the initial holes of the mounting holes of the blade, and the blade mounting holes are positioned and aligned by detecting the positioning pin.

[0011] Further, there are N mounting surfaces on the framework, and each mounting surface is provided with threaded holes and fixing pin holes; the base is installed on the mounting surface of the framework through bolts and fixing pins.

[0012] Further, there are multiple lifting plates on the side surface of the framework, and lifting holes are provided on the lifting plates for transporting the device.

[0013] Further, there is a groove on the base, and the lower die is embedded in the groove.

[0014] Further, N≥3, and the arrangement positions of the bases at least include: the blade root, the 1 / 3R position, and the 7 / 10R position; R is the blade length.

[0015] Further, the device further includes: a twist angle detection tooling; the twist angle detection tooling is a rectangular block, and a groove matching the outer shape of the blade at the 2 / 3R position is provided on the lower end surface of the rectangular block. By placing the twist angle detection tooling at the 2 / 3R position of the blade, the angle of the upper end surface of the twist angle detection tooling is detected to detect the twist angle of the blade.

[0016] Beneficial effects

[0017] By using the processing device described in the invention of the utility model, the blade mounting holes can be quickly clamped by this device for numerical control programming boring processing. At the same time, the dimensional accuracy, relative position, and relative angle of the processed mounting holes are qualified, the quality is stable, the part clamping, alignment, and processing time are greatly shortened, the part processing efficiency is greatly improved, and the processing cost is saved. The fixture device has a simple structure and is easy to operate, realizes the reasonable and reliable positioning and clamping of parts, reduces the operation difficulty of workers, and can meet the requirements of mass production. Description of the drawings

[0018] Figure 1 It is a schematic diagram of the blade structure;

[0019] Figure 2 It is a schematic diagram of a boring processing device for blade mounting holes;

[0020] Figure 3 It is a schematic diagram of the framework structure;

[0021] Figure 4 It is a schematic diagram of the base structure;

[0022] Figure 5 It is a schematic diagram of the lower die structure;

[0023] Figure 6 It is a schematic diagram of the upper die structure;

[0024] Figure 7 It is a schematic diagram of the twist angle detection tooling structure;

[0025] Figure 8 It is a schematic diagram of the positioning pin structure;

[0026] Figure 9 It is a schematic diagram of a boring processing device for blade mounting holes clamping a blade;

[0027] Skeleton 1, base 2, lower die 3, upper die 4, fixing pin 5, knuckle bolt 6, bolt pin 7, gasket 8, nut 9, positioning pin 10, twist angle detection tooling 11, blade 12, 13 - lifting hole, 14 - threaded hole, 15 - fixing pin hole, 16 - base mounting surface, 17 - threaded hole, 18 - fixing pin hole, 19 - threaded hole, 20 - positioning pin hole, 21 - bolt mounting groove, 22 - threaded hole, 23 - bolt mounting groove, 24 - concave die surface, 25 - convex die surface, 26 - bolt mounting groove, 27 - twist angle detection surface. Detailed implementation mode

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] The main technical solution of the present utility model: Provide a boring processing device for a blade mounting hole, including a skeleton 1, a base 2, a lower die 3, an upper die 4, a fixing pin 5, a knuckle bolt 6, a bolt pin 7, a gasket 8, a nut 9, a positioning pin 10, a twist angle detection tooling 11, and a blade 12. The base 2 is installed and fixed on the threaded hole 14 and the fixing pin hole 15 of the skeleton 1 through bolt washers and the fixing pin 5; the lower die 3 is fixed on the threaded hole 19 of the base 2 through bolt washers; the upper die 4 is fixed on the bolt mounting groove 23 of the lower die 3 through the knuckle bolt 6, the bolt pin 7, the gasket 8, and the nut 9; the blade 12 is fixed by being pressed between the concave die surface 24 of the lower die 3 and the convex die surface 25 of the upper die 4; the positioning pin 10 and the twist angle detection tooling 11 are used for clamping, aligning, and detecting the blade 12.

[0030] The skeleton 1 is provided with an upper mounting surface 16, and the upper mounting surface 16 is provided with a threaded hole 14 and a fixing pin hole 15 for installing and fixing the base 2 through bolt washers and the fixing pin.

[0031] Four lifting plates are provided on both sides of the skeleton 1, and the lifting plates are provided with lifting holes 13 for transporting and installing the processing device by installing eyebolt.

[0032] The base 2 is provided with a groove plane and a threaded hole 19 for positioning and installing the lower die 3.

[0033] The lower die 3 is provided with a bolt mounting groove 21 for fixing the lower die 3 to the base 2, a threaded hole 22, and a bolt mounting groove 23 for fixing and installing the upper die 4 through the knuckle bolt 6, the bolt pin 7, the gasket 8, and the nut 9, and the concave die surface 24 for positioning and installing the blade 12.

[0034] The upper die 4 is provided with a bolt mounting groove 26 for fixing the upper die 4 to the lower die 3 through bolts, nuts, and washers, and the convex die surface 25 for fixing and installing the blade 12.

[0035] The positioning pin 10 is used for positioning and aligning during the installation and fixing process of the blade 12.

[0036] The twist angle detection tooling 11 detects and adjusts the angle during the installation and fixation of the blade 12 through the twist angle detection profile 27.

[0037] Processing method for machining the blade mounting holes using this fixture device:

[0038] Step 1: Lift and install this processing device onto the CNC machine tool workbench through the lifting hole on the side of the skeleton 1 using a ring bolt and align and fix it.

[0039] Step 2: Install and fix the base 2 onto the base mounting surface 16 of the skeleton 1 through bolt washers and fixing pins 5.

[0040] Step 3: Install and fix the lower die 3 onto the internal threaded hole 19 on the groove plane of the base 2 through bolt washers.

[0041] Step 4: Install the blade 12 at the concave profile 24 of the lower die 3, and use the positioning pin 10 to clamp and align the blade 12 so that the blade profile fits the concave profile.

[0042] Step 5: Install and fix the upper die 4 onto the lower die 3 through articulated bolts 6, bolt pins 7, washers 8, and nuts 9, and make the convex profile 25 fit the blade profile.

[0043] Step 6: Detect the installation angle of the blade through the twist angle detection profile 27 of the twist angle detection tooling 11, and make corresponding adjustments to the blade according to the detection results until the processing requirements are met.

[0044] Step 7: The miller programs and bores two mounting holes φ120 +0.018 mm according to the drawing size requirements using a CNC milling machine, and the processing is completed.

Claims

1. A blade mounting hole boring processing device, characterized in that: The device comprises: a frame, N bases, N lower molds, N upper molds, and positioning pins; The skeleton is a frame structure, and N bases are fixed to the skeleton along the length direction by fixing pins; A lower die is fixed on each base by bolts, and an upper die is fixed to the lower die by bolts; a positioning cavity conforming to the shape of the blade is provided on the upper end surface of the lower die and the lower end surface of the upper die; The blade to be processed is fixed by N upper and lower dies; The positioning pin is inserted into the initial hole of the blade installation hole, and the blade installation hole is positioned and aligned by detecting the positioning pin.

2. The device according to claim 1, characterized in that: The frame is provided with N mounting surfaces, each of which is provided with a threaded hole and a fixing pin hole; the base is mounted on the mounting surface of the frame by means of bolts and fixing pins.

3. The device according to claim 1, characterized in that: A plurality of hoisting plates are arranged on the side of the frame, and hoisting holes are arranged on the hoisting plates for transporting the device.

4. The device according to claim 1, characterized in that: The base is provided with a groove, and the lower mold is embedded in the groove.

5. The device according to claim 1, characterized in that: N≥3, the base layout positions include at least: blade root, 1 / 3R, 7 / 10R; R is the blade length.

6. The device according to claim 1, characterized in that: The device also includes: a torsion angle detection tool; the torsion angle detection tool is a rectangular block, and the lower end surface of the rectangular block is provided with a groove matching the shape of the blade 2 / 3R. By placing the torsion angle detection tool at the blade 2 / 3R, the angle of the upper end surface of the torsion angle detection tool is detected to detect the torsion angle of the blade.

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