RU2036767C1 - Apparatus to correct blanks for machining - Google Patents

Abstract

FIELD: aviation motor-building industry. SUBSTANCE: apparatus has blank orientation mechanism, made in the form of body, fixed on plate. Body has through holes, in which rod-type supports to bear holder are inserted and fixed in pairs on plate. Free ends of rod-type supports are made sphere-shaped to be installed in sphere-shaped holes of holder. In the case, one pair of rods is fixed on plate stationary, and second pair is capable to make adjusted motion perpendicularly to plate plane, using adjusting limbs. EFFECT: apparatus is used in aviation motor-building industry. 2 cl, 7 dwg

Description

 The invention relates to the production technology of GTE blades and can be used in the manufacture of blades for workpieces in aircraft engine building.

 A device used for correction, implemented in the method, containing a cassette placed on the supports of the correction mechanism.

 A disadvantage of the known device is that after machining due to deformation of the workpiece, errors occur that must be compensated for by introducing correction. And since the correction allows you to more accurately adhere to a uniformly distributed allowance in the manufacturing process of the workpiece, therefore, this affects the accuracy. However, in this device, adjusting the cassette in a specific position, there is no way to move a certain amount. Those. This device does not allow you to quickly enter other correction values. This is due to the mechanical manufacture of the elements, the basing of the cartridge in the adjustment mechanism. All this reduces the accuracy of the distribution of stock.

 The prototype is a device implemented in the method, containing a manipulator with a plate, a correction mechanism for withdrawal with adjusting elements, a cassette placed on the supports of the mechanism for correction of withdrawal.

 A disadvantage of the known device is that the correction mechanism for the withdrawal of supports and the manipulator are not rigidly interconnected and are made integral. When the device is operating, the manipulator is installed on the supports (one base), and the cassette is placed on the supports of the withdrawal correction mechanism (second base). A large number of bases leads to the failure of a uniformly placed stock allowance. In addition, in the manufacture of a orientable workpiece with a manipulator is transferred to a prototype device. Then, after correction and pouring, they are transferred to the machining position. A large number of distortions leads to the failure of a uniformly distributed allowance. All this reduces the accuracy of the distributed stock.

 The aim of the invention is to improve the accuracy of the distribution of stock.

 This goal is achieved in that the device for the correction of the workpiece for machining includes a manipulator with a plate, a correction mechanism for withdrawal with adjusting elements, a cassette placed on the supports, fixed and movable supports made in the form of rods with a spherical surface at the end, the fixed supports are rigidly fixed to the manipulator plate, and the movable supports are mounted on the plate with the ability to move using the adjusting dials.

 Comparative analysis with the prototype shows that the inventive device is characterized by the presence of movable supports made in the form of rods with a spherical surface at the end, fixed supports are rigidly fixed to the plate of the manipulator, and the movable supports are mounted on the plate with the ability to move using the adjusting dials. Thus, the claimed device meets the criterion of "novelty."

 The combination of features in the proposed technical solution, while preserving the advantages of the prototype, i.e., the possibility of distributing the allowance or the ability to accurately distribute the allowance over all cross sections of the workpiece pen, at the same time, allows the withdrawal correction mechanism and the manipulator to be rigidly connected together and performed seamlessly. In addition, during the operation of the proposed device, the manipulator does not need to be installed, and the cassette is placed on the supports of the correction mechanism regarding withdrawal (one base). A small number of bases leads to the stability of a uniformly distributed allowance and, in particular, increases accuracy by eliminating errors of relocation and ensuring alignment and correction of the workpiece in one fixture. No technical solutions with the proposed combination of features and giving the same positive effect were found, therefore, it must be considered that the claimed device acquires a new technical property, which means that the proposed technical solution is recognized as meeting the criterion of "significant differences".

 In FIG. 1 presents a correction scheme of a workpiece for withdrawal; on fi g. 2 cassette with fixing on the supports; in FIG. 3 device in general form with supports for correction and filling of the cartridge; in FIG. 4 a section BB in FIG. 3; in FIG. 5 section GG in FIG. 4; in FIG. 6 device on an optical-mechanical device; in FIG. 7 cassette with the workpiece.

 The device comprises a blade blank 1, fixed in the manipulator 2. The manipulator 2 has a plate 3. The withdrawal correction mechanism consists of fixed supports 4, rigidly fixed to the plate 3, and movable supports 5, made in the form of rods with a thread and a ball surface at the end, moving relative to the plate 3 under the action of the adjusting limbs 6 with divisions (figure 5). After the workpiece is adjusted with the adjusting limbs 6, the found position is locked with the screws 7. On the cassette 8 mounted on the supports 4.5, spherical holes 9 are made, in which springs 10 with a latch 11 are placed to fix the cassette 8 on the supports 4.5.

 The workpiece 1, mounted in the manipulator 2, and the optomechanical device 12 are placed on the frame 13 (Fig. 6).

 The rotation of the workpiece 1 around the axis OX is called a displacement movement.

 The device operates as follows. By rotating the adjusting limbs 6, we move the movable bearings 5, made in the form of threaded rods, to the zero position (by zero divisions on the limbs), while the axis of the cassette V coincides with the axis of the workpiece 1 (Figs. 3, 4, 5). In this way, the blade blank is set to the zero position. After moving, the movable supports 5 are secured with screws 7 relative to the plate 3 of the manipulator 2. Next, the tuning blank 1 is oriented on the optical-mechanical device 12. The orientated tuning blank 1 together with the manipulator 2 is removed from the optical-mechanical device 12 and vertically mounted on the bed 13 (Fig. 6).

 Next, the cassette 8 is put on the profile part of the “training” workpiece 1 and fixed on the supports 4,5 so that the spherical openings of the cassette 8 fall on the response spherical protrusions of the supports 4,5 (base K, Fig. 2,3), fixed (by pressing on the cassette) with clamps 11 with springs 10. Next, fill in the cassette 8 with a “tuning” workpiece using a dispenser (not shown in FIG.) with Wood alloy on the bed 13 (FIG. 6).

 After machining, the “tuning” workpiece is removed from the cassette by smelting (not shown in FIG.). The term "tuning" workpiece refers to the first test piece used to adjust the part relative to the tool. The term “workpiece” means a workpiece controlled by the distribution of stock over the pen on an optical-mechanical device (Fig. 6). We determine the magnitude of the error in the withdrawal ΔI = 0.6 mm of the “tuning" workpiece arising from deformation during machining, since the tool remains stationary. The value of ΔI is constant (Fig. 7).

 The rotation of the adjusting limbs 6 adjust the movable bearings 5, made in the form of rods with thread, the adjusting limbs 6 (Figs. 3, 4, 5) according to the divisions located on them, so that the axis of the cassette 8 V deviates from the axis of the workpiece Z lying in the vertical plane parallel to the supports 4, 5, the value ΔI = 0.6 mm of the peripheral section of the workpiece.

 Then, orienting the "working" workpiece 1 using an optical-mechanical device 12, remove and vertically install the workpiece 1 on the bed 13 (Fig. 6).

 Next, the cassette 8 is put on the profile part of the “working” workpiece 1 and fixed on the supports 4, 5 so that the spherical openings of the cassette 8 fall on the response spherical protrusions of the supports 4,5 (base K, Fig. 2,3), fixed by pressing cassette clips 11 with springs 10. Next, fill the cassette 8 with the "working" workpiece using a dispenser (Fig. not shown) with Wood alloy on the frame 13.

 After machining the "working" workpiece, the "working" workpiece 1 is removed from the cassette 8 by smelting (not shown in Fig.).

 In conclusion, control the distribution of stock over the pen of the "working" workpiece after machining (Fig. 6).

Using the proposed invention in comparison with the prototype allows you to:
to increase the accuracy of the distribution of the allowance due to the fact that the correction mechanism for withdrawal and the manipulator are rigidly connected to each other and are made integrally in the node. When the proposed device is operating, the manipulator does not need to be installed, and the cartridge is placed on the supports of the withdrawal correction mechanism (one base). A small number of bases leads to the stability of a uniformly distributed allowance;
to increase the accuracy of the distribution of allowance due to the fact that the oriented workpiece with the manipulator does not need to be transferred to the device prototype. A small number of transfers leads to the stability of a uniformly distributed allowance. In other words, it improves accuracy by eliminating relocation errors and ensuring the alignment and correction of the blade blanks in one fixture; to increase ease of use due to the completed design can significantly reduce the size and weight. And since the weight and dimensions have been reduced, it becomes possible to adjust at any position (including machining) without reference to the massive prototype device, which gives additional convenience;
to improve ease of use due to the location of the adjustment correction dials in the same accuracy with the alignment adjustment screws;
to increase the accuracy of the distribution of stock by eliminating the casting rack from the process and eliminating the operations of transferring the workpiece together with the manipulator to the rack with indicator hours.

 The new design of the manipulator includes the functions of a casting rack and a corrective mechanism in five coordinates, and also eliminates the production of additional installation bases, casting racks.

Claims (2)

 1. DEVICE FOR CORRECTION OF THE PROCESSING OF THE PROCESSING OF THE PROCESSING MACHINES, containing the cartridge for the workpiece, the orientation mechanism with the body and the plate, the mechanism for adjusting the workpiece "withdrawal" with supports for the cartridge and adjusting elements, characterized in that, in order to reduce costs by reducing the number of units equipment and improve the accuracy of the distribution of allowance, support for the cartridge is made in the form of at least four rods with a spherical surface at the free ends, pairwise mounted on the plate, one pair of which x is fixed rigidly, and the other with the possibility of adjusting movement perpendicular to the plane of the plate, and in the cassette made with the possibility of interaction with the said spherical surfaces of the ends of the supports are sphere-shaped holes, and through holes for the rods are made in the body of the orientation mechanism.  2. The device according to claim 1, characterized in that the adjusting elements of the correction mechanism "by withdrawal" are made in the form of adjusting limbs.