SU1819739A1 - Method and apparatus for working blades processing - Google Patents

Description

The invention relates to the production technology of GTE blades and can be used in the manufacture of blades from blanks in aircraft engine manufacturing. The purpose of the invention is to increase the accuracy of the manufacture of the blades.

Figure 1 shows a cassette mounted vnul relative to the workpiece; figure 2 - device for implementing the method; in Fig.Z - section bB in Fig.2; figure 4 - section bb in fig.Z; in Fig.5 section B1-B1 in Fig.Z; Fig.6 is a section B2-B2 in Fig.4 and 5; in Fig.7 is a section GG in Fig.2: in Fig.8 is a section DD in Fig.7, a correction for the withdrawal by ΔY; in Fig.9 a section EE in Fig.7. correction around the axis K1_ by ΔC: in FIG. 10-section MF in Fig.7. correction around the axis of the MP by Δ; 11 depicts a working blade with allowance. Install in the same cartridge. Turn the ⁿ⁹ 'working blade around its two diagonals and move along the axis passing through the diagonal intersection point. In this way, the stock is evenly distributed. Check the uniformity of distribution with a pre-configured control tool. The working blade is fixed in the cassette and the allowance is removed mechanically in it. The cassette is installed in the housing. Under the cassette are two wedges with a spatula. Each wedge has two bevels with the same inclination angles. The slopes of two wedges together form a cruciform figure. The cassette is supported by four rods. Each rod contacts one end of one of the bevels of one of the wedges. 2 s.p. f-ls, 14 silt, tool for implementing the method with clamps and springs; in FIG. 12 - a device for distributing the allowance for the feather of the blades and control and input correction for the turn; in FIG. 13-diagram of the correction of the workpiece in the rotation (a) and offset (b); in FIG. 14 measured base plates.

The proposed method is carried out as follows.

1. Carry out zeroing the “training” blanks relative to the cassette, you.

2. Carry out the distribution of the allowance on the pen tuning blanks using an optical-mechanical device.

3. The oriented tuning blank along with the manipulator is removed from the optical-mechanical device and vertically mounted on the bed (Fig. 12).

SU ".> 1819739 A1

4. Fill the cassette with the tuning blank with WOODA alloy.

5. Carry out the machining of the tuning blank (pulling).

6. Remove the training blank from the cartridge.

7. Control the distribution of the allowance in front of the training blank after machining (Fig. 12).

,8. The error value is determined by turning Δτ / d to the shift Δί and Δ Y along the axis MP Δ B and Δ C around the axis KL of the tuning blank (Fig. 12).

9. Carry out the correction Δ Y withdrawal, Δ B around the NIP axis and Δ C around the KL axis, Δ L offset, Δ ip cassette rotation (relative to zero) relative to the workpiece.

10. Carry out the distribution of stock over the pen of the workpiece using an optical-mechanical device.

11. After the distribution of the allowance, the correction is made to the U-turn on the optical-mechanical device by the value Δψ.

12. The oriented workpiece together with the manipulator is removed from the optical-mechanical device and vertically mounted on the bed.

13. Fill the cassette with the workpiece alloy wood.

14. Carry out a correction to the offset Δ L of the position of the workpiece by replacing the measured base plates on a broaching machine.

15. Carry out the machining of the working ”workpiece (pulling).

16. Remove the workpiece from the cartridge.

17. Control the distribution of the allowance along the pen of the training blank after machining.

The rotation of the workpiece around the axis ΟΖ (Fig. 13) is called the displacement along the turn by the value Δψ. The movement of the workpiece relative to OX is called the offset AL. The deviation of the axis of the cassette V with the center O 'from the Z axis in the plane OO ¹ B is called a correction for withdrawal by the value Δ B (Fig. 1, Fig. 8). The deviation of the axis of the cassette Y with a center of O ¹ from the Z axis in the OO ¹ L plane is called the correction around the first diagonal (MP axis) by Δ B (Fig. 1, Fig. 10). The deviation from the cartridge V with center O ¹ from the Z axis in the plane OO ¹ M is called a correction around the second diagonal (ori KL) by Δ С (Fig. 1, Fig. 9).

The term “tuning blank” refers to the first test blank used to adjust the blank relative to the tool.

The device for implementing the method comprises a manipulator 1 with a plate 2. In the plane of the plate 2 of the manipulator 1 there is a correction mechanism (along the axis, around the MP axis, around the KL axis), consisting of two wedges 3, 4, which are cross-wise. Wedges 3 and 4 are made in the form of a Yu prism with an isosceles triangle at the base. Wedges 3 and 4 move the supports 5-8 vertically, with one wedge support rising, the other bearing lowering the same amount. The supports are made in the form of 15 rods with a spherical surface at the end. On the cassette 9 mounted on the supports 5-8, spherical openings 10 are made in which springs 11 with a latch 12 are placed to fix the cartridge 9 20 on the supports 5-8. The rotation of the cartridge 9 for correction around the MP axis and around the KL axis is carried out by the adjusting screws 13, 14. After the workpiece 15 is adjusted by the adjusting screws 15, the found position 25 is locked by the screws 16. The workpiece 15. fixed in the manipulator 1, and the optical-mechanical device 17 are placed on the bed 18. The offset correction is carried out using the base plates 19.

The device operates as follows.

Rotating the adjusting screws 13, 14. move the cartridge 5 to the zero position (by the division О located on the adjusting screws 13, 14 (Fig. 4, Fig. 5)), while the axes of the cartridge V coincide with the axis of the workpiece.

. Next, the tuning blank 15 cor40 is rectified on the optical-mechanical device 17. The oriented tuning blank 15 together with the manipulator 1 is removed from the optical-mechanical device 17 and vertically mounted on the bed 18. 45 After the blank 15 has been adjusted with the adjusting screws, the position found is locked with the screw 16.

Next, the cassette 9 is put on the profile 50 of the tuning blank 15 and fixed on the supports 5-8 so that the spherical protrusions of the supports 5-8 are fixed by pressing the cassettes with the clips 13 (Fig. 4) with springs 11. Then, the kas55 set 9 with the tuning the workpiece using a dispenser (in Fig. not shown) by the VUD alloy on the bed 18.

After mechanical machining, the training blank is removed from the cassette 9 by smelting (not shown in Fig. 1).

Controlling the distribution of the allowance over the pen on the optical-mechanical device 17 (Fig. 13), determine the magnitude of the error in turn Δ ^ = 0.4 mm. by offset 'Δ 1_ = 0.2 mm and one of three errors 5 around the MP axis by Δ B, around the KL axis by Δ C, the ΔΥ of the workpiece is removed due to deformation during machining, since the tool remains stationary . Values of 10 Δ ^. ΔΥ. ΔΙ_. Δ C. ΔΒ.

After machining the workpiece, a correction is carried out for withdrawal around the MP axis and the KL axis. U-turn and offset, i.e. they introduce an error into the distribution of the allowance, which is after machining. returns the workpiece to the distributed stock.

For different workpieces, there can be any of three corrections (Δ B, Δ C, Δ Y), 20 depending on the deformation during machining. Consider all three examples of correction.

The first correction around the KL axis is carried out (Fig. 9) by rotating the adjusting screw 14 (with a stationary zero point, adjusting screw 13), while the wedge 4, moving, raises one support 5, lowers the other support 6 by the same amount Ή, as a result, the axis of the cassette V with center О ¹ 30 deviates from the Z axis of the workpiece in the ОО ¹ М plane by the value АС = 0.2 mm, by divisions (Figs. 5, 6) of the adjusting screw 14. After moving, the movable supports 5- 8 lock with screws 16 relative to the plate 2 of the manipulator 35 of the pululator 1.

The second correction around the axis of the MP (Δ B = 0.2 mm, Δ C = Δ Y = 0 (Fig. 10) is carried out by rotating the adjusting screw (when stationary at zero, the adjusting screw 14), while the wedge 3, moving , raises one support 8, launches the other support 7 © by the same amount of Н, as a result, the axis of the cartridge with the center O 'deviates from the axis Ζ of the workpiece in the OO- ¹ L plane by Δ B = 0.2 mm, by divisions (Fig. 4, FIG. 6) of the adjusting screw 13. After moving, the movable supports 5-8 are locked with screws 16 relative to the plate 2 of the manipulator 1.

The third offset correction (ΔΒ = ДС = 0, Δ Υ = 0.2 mm) is carried out (Fig. 8) by rotating the adjusting screws 13, 14 (by the same number of divisions each), while the wedges 3 and 4, moving, one support 5.8 they raise, other supports 7, 6 are lowered by the same amount of H ¹ , as a result, the axis of the cassette V with center O ¹ deviates by the value Δ Υ = 0.2 mm in the plane OO ¹ B (Fig. 4.

5, 8) according to the divisions of the adjusting screws 13, 14 (Fig.6). After moving the movable supports 5-8 are locked with screws 16 relative to the plate 2 of the manipulator 1 (Fig.6).

Next, the workpiece 15 is oriented on the optical-mechanical device 17. The oriented workpiece is adjusted by the error of the tuning workpiece by turning the peripheral section Δ ^ = 0.4 mm using the manipulator 1 (Fig. 12).

After correction according to Δι / "the workpiece 15 together with the manipulator 1 is removed from the optical-mechanical device 17 and vertically mounted on the bed 18 (Fig. 12),

Next, the cartridge 9 is put on the profile part of the workpiece 15 and fixed on the supports 5-8 so that the spherical holes 10 of the cartridge 9 fall on the response spherical protrusions of the supports 5-8, fixed (by pressing on the cartridge) with a latch 12 with springs 11 (Fig.11 ) Next, fill in the cassette 9 with the workpiece using a dispenser (not shown in Fig.) By the VUD alloy on the bed 18.

Next, the workpiece is offset by the offset Δ L = 0.2 mm by replacing the measured base plate 19 (Fig. 1-4) with a thickness of 20.0 mm set on a broaching machine with a measuring plate with a thickness of 20.2 mm.

After machining, the workpiece is removed from the cartridge 9 by smelting (not shown in FIG.).

In conclusion, control the distribution of allowance for the perimeter of the workpiece after machining (Fig. 12).

Claims (2)

Claim 1. The method of processing the working blades, in which a reference blade is made, installed in a cassette, and a control tool is set up on this blade, a reference blade is removed, a working blade is made with allowance, it is installed in the same cassette, and uniformly relative to the reference blade the allowance is distributed by using the said tool and moving the working blade relative to three axes intersecting at one point, the blade moving relative to one axis, and relative to the other two Dial Rotate, fixed blade in the cartridge, and then it is treated, characterized in that the axes of rotation of the blade is selected diagonals and after its processing oversize distribution is produced by mechanical removal of the latter. Ί 2. A device for processing working blades, comprising a casing placed on it with the possibility of relative movement of the cartridge, a mechanism for adjusting the position of the cartridge, including two wedges, means of moving the wedges, support rods connecting the cartridge with the wedges, characterized in that each wedge is made with two bevels directed from the center to the periphery and having the same angles of inclination, the wedges are located in the cavity of the housing 5 crosswise, each support rod is installed with direct contact one of the bevels of one of the wedges. figs! 5-5 FigL β ~ 8 turned ο ~ ΰ turned Figure 5 FIG. 9 MF (PuzfO. / // 12 (pU2.ff fig. 12 fig. 13 fig. M Compiled by V. Dorozhkin Editor L. Volkova Tehred M. Morgenthal Corrector M. Kul Order 1999 Circulation Subscription VNIIIPI State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35. Raushskaya nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.