Embedded radial air seal tooth mounting equipment and mounting method

Abstract

The invention discloses embedded type radial air seal tooth mounting equipment and method.The embedded type radial air seal tooth mounting equipment comprises a workbench, a rolling cutter assembly and a machining center, and the workbench is used for fixing a stator part to be machined; the machining center comprises a two-coordinate moving mechanism and a cutter bar mounting assembly, the two-coordinate moving mechanism drives the rolling cutter assembly to move along the X axis and the Z axis, the cutter bar mounting assembly is used for mounting the rolling cutter assembly, the two-coordinate moving mechanism comprises an X-axis guide rail and a Z-axis moving set, the Z-axis moving set comprises a Z-axis guide rail and a Z-axis moving seat, the Z-axis moving seat is arranged on the X-axis guide rail, and the cutter bar mounting assembly is used for mounting the rolling cutter assembly. The cutter bar installation assembly comprises a cutter bar base and a cutter bar installation base, the cutter bar installation base is arranged at the output end of the cutter bar base, and the cutter bar base is arranged on the Z-axis guide rail and can drive the cutter bar installation base to ascend and descend along the Z axis. And the rolling cutter assembly is arranged at the output end of the cutter bar mounting seat. According to the device, the radial air seal teeth and the embedded pressing strips can be automatically rolled and mounted through the rolling cutter, the mounting reliability is good, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of stator component processing, in particular to an inlaid radial air seal tooth installation device and an installation method. Background Art

[0002] In the production process of stator rings (also called stator parts), our company needs to first produce an annular workpiece, then machine a groove on the inner wall of the annular workpiece, then install radial gas sealing teeth in the groove, and install caulking strips on the surface of the radial gas sealing teeth to ensure the sealing performance of the stator parts. Some of these grooves are continuous spiral grooves, and some are flat grooves. The existing production method can only be installed manually. First, install the radial gas sealing teeth into the grooves, and then place the caulking strips between the radial gas sealing teeth and the grooves. The disadvantage of this production method is that in order to ensure the sealing performance, the entire gas sealing tooth needs to be knocked and installed step by step with a sample punch, and the knocking points must be continuous and uninterrupted, otherwise it will affect the sealing performance. During the installation process, the caulking force depends on the interference fit of the sample punch during caulking. If the interference fit is not enough, the pull-out force of the radial air seal teeth will not meet the requirements during the acceptance of the finished product. Therefore, the requirements for manual installation are very high, otherwise the production will be unqualified. Moreover, this manual continuous hammering installation process is very hard, with high labor costs, slow production speed and low production efficiency. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an inlaid radial air seal tooth installation device and an installation method.

[0004] The technical solution of the present invention is: an inlaid radial air seal tooth installation device, comprising a workbench, a rolling cutter assembly and a machining center, the workbench is used to fix the stator to be processed, the machining center comprises a two-coordinate moving mechanism for driving the rolling cutter assembly to move along the X-axis and the Z-axis, and a tool bar installation assembly for installing the rolling cutter assembly, the two-coordinate moving mechanism comprises an X-axis guide rail and a Z-axis moving group, the Z-axis moving group comprises a Z-axis guide rail and a Z-axis moving seat, the Z-axis moving seat is arranged on the X-axis guide rail, and can drive the Z-axis guide rail to move forward and backward along the X-axis guide rail, the tool bar installation assembly comprises a tool bar seat and a tool bar mounting seat, the tool bar mounting seat is arranged at the output end of the tool bar seat, the tool bar seat is arranged on the Z-axis guide rail, and can drive the tool bar mounting seat to move up and down along the Z-axis, and the rolling cutter assembly is arranged on the output end of the tool bar mounting seat.

[0005] Preferably, the workbench is connected to a workbench rotation driving mechanism, and the workbench rotation driving mechanism drives the workbench to rotate.

[0006] Preferably, the X-axis guide rail is a screw guide rail type, including an X-axis screw and an X-axis slide rail, the X-axis screw is connected to an X-axis motor, and the X-axis motor drives the X-axis screw to rotate; the Z-axis movable seat is meshedly connected to the X-axis screw, and is connected to the X-axis slide rail by a slider; the Z-axis guide rail includes a Z-axis screw and a Z-axis slide rail, the Z-axis screw is connected to a Z-axis motor, and is driven to rotate by the Z-axis motor, and the tool bar seat is meshedly connected to the Z-axis screw, and is connected to the Z-axis slide rail by a slider.

[0007] Preferably, the rolling knife assembly includes a knife rod, a sealing strip guide plate and a rolling knife, the rolling knife is disc-shaped and arranged at the lower end of the knife rod, and the upper end of the knife rod is fixed to the output end of the knife rod mounting seat; the sealing strip guide plate is arranged on the knife rod above the rolling knife.

[0008] As a further preferred embodiment, a rolling bearing is provided between the rolling knife and the knife rod, the cross section of the rolling knife is wedge-shaped, and the outer end of the rolling knife is a blunt edge with an arc transition.

[0009] As a further preferred embodiment, the upper end of the sealing strip guide plate is installed on the knife rod through a clamp, and the lower end thereof extends downward and to the right side of the rolling knife, and the extended end is upwardly tilted; the front-to-rear distance of the front end of the rolling knife from the center axis of the knife rod is smaller than the diameter of the rolling knife.

[0010] A method for installing an inlaid radial gas seal tooth, using an inlaid radial gas seal tooth installation device, the method comprising the following installation steps:

[0011] A. Manually insert the first radial air-sealing tooth and the first caulking strip into the groove of the stator component. The wall-adhering part of the radial air-sealing tooth is inserted into the groove along the lower surface of the stator component and installed, and the foot of the radial air-sealing tooth is against the bottom end of the groove; the caulking strip is arranged above the wall-adhering part of the radial air-sealing tooth and abuts against the foot of the radial air-sealing tooth, the upper surface of the caulking strip is close to the upper surface of the groove, and the lower surface of the caulking strip is close to the upper surface of the wall-adhering part of the radial air-sealing tooth; during the installation process, the radial air-sealing teeth and the caulking strip are allowed to be connected, the gap N between the connected radial air-sealing teeth is 0-1.5mm, and the gap M between the connected caulking strips is 0-4mm; in the starting section, the starting non-overlapping position of the caulking strip and the radial air-sealing tooth is at least 40mm; in the middle section of the inlay, the spacing distance between the gap N between the connected radial air-sealing teeth and the gap M between the caulking strips is at least 40mm;

[0012] B. After the radial gas seal teeth are embedded in the groove of the stator through the caulking strip, use a flat punch and a fitter's hammer to knock the caulking strip at intervals to fix the radial gas seal teeth;

[0013] C. Install the stator component on the workbench of the inlaid radial gas seal tooth installation equipment, clamp and install it, install the rolling cutter, and roll the radial gas seal tooth and the caulking strip with the specified parameters; the lower surface of the rolling cutter is pressed on the upper surface of the wall-attached part of the radial gas seal tooth, and the outer end of the rolling cutter is against the side of the caulking strip. The recommended value of the rolling interference of the rolling cutter is 0.8±0.1mm;

[0014] D. End treatment: cut off the last radial gas seal tooth and the last caulking strip, and then install them after flattening. For gas seals with a center dividing surface, after the last radial gas seal tooth is installed, cut off the excess material and flatten the joint surface.

[0015] Protect the joint surface with steel tape;

[0016] E. Check whether the radial air seal teeth meet the requirements after installation; if the radial air seal teeth meet the requirements after installation, the installation steps are completed; if the radial air seal teeth do not meet the requirements after installation, it is allowed to re-caulking the parts with poor installation quality using the above steps.

[0017] The beneficial effects of the present invention are as follows: the present invention can realize the automatic rolling installation of radial gas sealing teeth and inlaying strips by a rolling cutter, with good installation reliability and high production efficiency, and avoids production errors and production defects caused by manual processing in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention observed from one side.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention observed from the other side.

[0020] Figure 3 It is the front view of the present invention.

[0021] Figure 4 It is a top view of the present invention.

[0022] Figure 5 It is a left side view of the present invention.

[0023] Figure 6 It is one of the schematic diagrams of the processing process of the stator component of the present invention.

[0024] Figure 7 This is the second schematic diagram of the processing process of the stator component of the present invention.

[0025] Figure 8 It is a schematic diagram of processing a stator component by sample punching according to the present invention.

[0026] Fig. 9 It is a schematic diagram of machining a stator component by using a rolling cutter assembly according to the present invention.

[0027] Fig.10 It is a cross-sectional view of machining a stator component by using a rolling cutter assembly according to the present invention.

[0028] Fig.11 It is a cross-sectional view of a stator component processed by sample punching according to the present invention.

[0029] Fig.12 It is a stereogram of a sample punch of the present invention.

[0030] Fig.13 It is a stereoscopic view of the rolling cutter assembly of the present invention.

[0031] Fig.14 It is a schematic diagram of the internal structure of the rolling cutter assembly of the present invention.

[0032] Fig.15 It is a side view of the rolling cutter assembly of the present invention.

[0033] Fig.16 It is the installation process requirement diagram of the present invention.

[0034] Description of labels:

[0035] 1: X-axis guide rail; 11: X-axis lead screw; 12: X-axis slide rail; 13: X-axis motor; 2: Z-axis moving seat; 3: Z-axis guide rail; 31: Z-axis motor; 32: Z-axis lead screw; 33: Z-axis slide rail; 4: tool bar seat; 5: tool bar mounting seat; 6: rolling knife assembly; 61: tool bar; 62: sealing strip guide plate; 63: rolling knife; 64: clamp; 65: rolling bearing; 7: stator; 71: radial air sealing tooth; 711: wall-attached part; 712: foot; 72: caulking strip; 8: workbench; 9: sample punch. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] like Figure 1-16As shown, the present invention is an inlaid radial air seal gear installation device, including a workbench 8, a rolling cutter assembly 6 and a machining center, the workbench 8 is used to fix the stator 7 to be processed, the machining center includes a two-coordinate moving mechanism for driving the rolling cutter assembly 6 to move along the X-axis and the Z-axis, and a tool bar installation assembly for installing the rolling cutter assembly 6, the two-coordinate moving mechanism includes an X-axis guide rail 1 and a Z-axis moving group, the Z-axis moving group includes a Z-axis guide rail 3 and a Z-axis moving seat 2, the Z-axis moving seat 2 is arranged on the X-axis guide rail 1, and can drive the Z-axis guide rail 3 to move forward and backward along the X-axis guide rail 1, the tool bar installation assembly includes a tool bar seat 4 and a tool bar mounting seat 5, the tool bar mounting seat 5 is arranged at the output end of the tool bar seat 4, the tool bar seat 4 is arranged on the Z-axis guide rail 3, and can drive the tool bar mounting seat 5 to move up and down along the Z-axis, and the rolling cutter assembly 6 is arranged on the output end of the tool bar mounting seat 5.

[0038] In this embodiment, the workbench 8 is connected to a workbench rotation driving mechanism, and the workbench rotation driving mechanism drives the workbench 8 to rotate.

[0039] In this embodiment, the X-axis guide rail 1 is a screw guide type, including an X-axis screw rod 11 and an X-axis slide rail 12, the X-axis screw rod 11 is connected to an X-axis motor 13, and the X-axis screw rod 11 is driven to rotate by the X-axis motor 13; the Z-axis movable seat 2 is meshed and connected with the X-axis screw rod 11, and is connected to the X-axis slide rail 12 by a slider; the Z-axis guide rail 3 includes a Z-axis screw rod 32 and a Z-axis slide rail 33, the Z-axis screw rod 32 is connected to a Z-axis motor 31, and is driven to rotate by the Z-axis motor 31, and the tool bar seat 4 is meshed and connected with the Z-axis screw rod 32, and is connected to the Z-axis slide rail 33 by a slider.

[0040] In this embodiment, the rolling knife assembly 6 includes a knife rod 61, a sealing strip guide plate 62 and a rolling knife 63. The rolling knife 63 is disc-shaped and is arranged at the lower end of the knife rod 61. The upper end of the knife rod 61 is fixed to the output end of the knife rod mounting seat 5; the sealing strip guide plate 62 is arranged on the knife rod 61 and is located above the rolling knife 63.

[0041] In this embodiment, a rolling bearing 65 is provided between the rolling knife 63 and the knife rod 61. The cross-section of the rolling knife 63 is wedge-shaped, and the outer end of the rolling knife 63 is a blunt edge with an arc transition. The wedge shape facilitates the insertion of the rolling knife 63 into the groove of the stator component 7, and the blunt edge can prevent the rolling knife 63 from cutting the caulking strip 72 and the radial air sealing teeth 71 during the processing.

[0042] In this embodiment, the upper end of the sealing strip guide plate 62 is installed on the knife rod 61 through a clamp 64, and the lower end thereof extends downward and to the right side of the rolling knife 63, and the end of the extension is upwardly tilted. This structure can allow the radial air sealing teeth 71 to be gradually pressed to the bottom of the rolling knife 63 during the rotation of the workbench 8, thereby playing a guiding role; the front-to-back distance between the front end 621 of the rolling knife 63 and the central axis of the knife rod 61 is smaller than the diameter of the rolling knife 63. This structure is designed to allow the upwardly tilted sealing strip to only play a guiding role, and the rolling and inlaying work is still performed by the rolling knife 63, which is processed step by step and in an orderly manner to ensure the installation quality.

[0043] A method for installing an inlaid radial gas seal tooth, using an inlaid radial gas seal tooth installation device, the method comprising the following installation steps:

[0044] A. Manually insert the first radial air-sealing tooth 71 and the first caulking strip 72 into the groove of the stator 7. The radial air-sealing tooth 71 includes a wall-attached portion 711 and a foot portion 712. The wall-attached portion 711 of the radial air-sealing tooth 71 is inserted into the groove of the stator 7 along the lower surface of the groove and installed, and the foot portion 712 of the radial air-sealing tooth 71 is against the bottom end of the groove; the caulking strip 72 is arranged above the wall-attached portion 711 of the radial air-sealing tooth 71 and abuts against the foot portion 712 of the radial air-sealing tooth 71. The upper surface of the caulking strip 72 is closely attached to the upper surface of the groove, and the lower surface of the caulking strip 72 is closely attached to the wall-attached portion 711 of the radial air-sealing tooth 71. Upper surface; During the installation process, the radial air-sealing teeth 71 and the caulking strips 72 are allowed to be connected continuously, and the gap M between the connected radial air-sealing teeth 71 is 0-1.5mm, and the gap N between the connected caulking strips 72 is 0-4mm; In the starting section, the starting non-overlapping position of the caulking strips 72 and the radial air-sealing teeth 71 is at least 40mm; In the middle section of the inlay, the gap M between the connected radial air-sealing teeth 71 and the gap N between the caulking strips 72 are at least 40mm apart; There is a minimum distance requirement between the two seam gaps, which avoids the situation where the two seam gaps are too close, resulting in an uneven sealing surface and air leakage;

[0045] B. After the radial gas sealing teeth 71 are embedded in the groove of the stator 7 through the caulking strip 72, the caulking strip 72 is hammered at intervals with a flat punch 9 and a fitter's hammer to fix the radial gas sealing teeth 71. This step is only to install the caulking strip 72 and the radial gas sealing teeth 71 into the groove for positioning. Further rolling installation is achieved by step C. Since this step is only for positioning, the processing requirements are not high, the labor intensity and processing accuracy of the workers are also greatly reduced, and the production efficiency is improved to a certain extent.

[0046] C. Install the stator 7 on the workbench 8 of the inlaid radial gas seal tooth installation equipment, clamp and install it, install the rolling cutter 63, and roll the radial gas seal tooth 71 and the caulking strip 72 with the specified parameters; the lower surface of the rolling cutter 63 is pressed on the upper surface of the wall-attached part 711 of the radial gas seal tooth 71, and the outer end of the rolling cutter 63 is against the side of the caulking strip 72. The recommended value of the rolling interference of the rolling cutter 63 is 0.8±0.1mm; when processing continuous spiral grooves, the workbench 8 rotates, and the Z-axis motor 31 drives the Z-axis lead screw to rotate, so as to realize the up and down movement of the rolling cutter 63, thereby realizing the inlay installation of the spiral groove by the rolling cutter 63; when processing planar grooves, the Z-axis motor 31 remains stationary to realize planar processing;

[0047] D. End treatment: cut off the last radial gas seal tooth 71 and the last caulking strip 72, and then install them after flattening. For the gas seal with a center dividing surface, after the last radial gas seal tooth 71 is installed, cut off the excess material, flatten it at the joint surface, and protect the joint surface with a steel belt;

[0048] E. Check whether the radial air-sealing teeth 71 after installation meet the requirements (such as the joint size between the caulking strip 72 and the radial air-sealing teeth 71, whether the side of the radial air-sealing teeth 71 is damaged, the burrs at the cutting of the caulking strip 72; the radial air-sealing teeth 71 are not allowed to have wrinkles and lodging, tensile test, etc., which are carried out according to actual production requirements); if the radial air-sealing teeth 71 after installation meet the requirements, the installation steps are completed; if the radial air-sealing teeth 71 after installation do not meet the requirements, it is allowed to use the above steps to re-caulk the parts with poor installation quality.

[0049] In the description of the specification of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "front", "rear", "upper end", "lower end", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mosaic radial gas seal tooth installation device, characterized in that The invention comprises a workbench (8), a rolling cutter assembly (6) and a machining center, wherein the workbench (8) is used to fix a stationary component (7) to be machined, and the machining center comprises a two-coordinate moving mechanism for driving the rolling cutter assembly (6) to move along an X-axis and a Z-axis, and a tool bar mounting assembly for mounting the rolling cutter assembly (6), wherein the two-coordinate moving mechanism comprises an X-axis guide rail (1) and a Z-axis moving group, wherein the Z-axis moving group comprises a Z-axis guide rail (3) and a Z-axis moving seat (2), and the Z-axis The movable seat (2) is arranged on the X-axis guide rail (1) and can drive the Z-axis guide rail (3) to move forward and backward along the X-axis guide rail (1); the tool bar mounting assembly comprises a tool bar seat (4) and a tool bar mounting seat (5); the tool bar mounting seat (5) is arranged at the output end of the tool bar seat (4); the tool bar seat (4) is arranged on the Z-axis guide rail (3) and can drive the tool bar mounting seat (5) to move up and down along the Z axis; the rolling knife assembly (6) is arranged on the output end of the tool bar mounting seat (5).

2. The inlaid radial air seal tooth installation device according to claim 1 is characterized in that The workbench (8) is connected to a workbench rotation driving mechanism, and the workbench rotation driving mechanism drives the workbench (8) to rotate.

3. The inlaid radial air seal tooth installation device according to claim 1 is characterized in that The X-axis guide rail (1) is a screw guide rail type, including an X-axis screw rod (11) and an X-axis slide rail (12), wherein the X-axis screw rod (11) is connected to an X-axis motor (13), and the X-axis motor (13) drives the X-axis screw rod (11) to rotate; the Z-axis movable seat (2) is meshedly connected to the X-axis screw rod (11), and is connected to the X-axis slide rail (12) by a slider; the Z-axis guide rail (3) includes a Z-axis screw rod (32) and a Z-axis slide rail (33), wherein the Z-axis screw rod (32) is connected to a Z-axis motor (31), and is driven to rotate by the Z-axis motor (31), and the tool bar seat (4) is meshedly connected to the Z-axis screw rod (32), and is connected to the Z-axis slide rail (33) by a slider.

4. The inlaid radial air seal tooth installation device according to claim 1, characterized in that The rolling knife assembly (6) comprises a knife rod (61), a sealing strip guide plate (62) and a rolling knife (63); the rolling knife (63) is disc-shaped and is arranged at the lower end of the knife rod (61); the upper end of the knife rod (61) is fixed to the output end of the knife rod mounting seat (5); the sealing strip guide plate (62) is arranged on the knife rod (61) and is located above the rolling knife (63).

5. The inlaid radial gas seal tooth installation device according to claim 4, characterized in that A rolling bearing (65) is provided between the rolling knife (63) and the knife rod (61). The cross section of the rolling knife (63) is wedge-shaped, and the outer end of the rolling knife (63) is a blunt edge with an arc transition.

6. The inlaid radial air seal tooth installation device according to claim 4, characterized in that The upper end of the sealing strip guide plate (62) is mounted on the knife rod (61) through a clamp (64), and the lower end thereof extends downward and toward the right side of the rolling knife (63), with the end of the extension being upwardly tilted; the front-to-rear distance between the front end of the rolling knife (63) and the central axis of the knife rod (61) is smaller than the diameter of the rolling knife (63).

7. A method for installing a mosaic radial gas seal tooth, characterized in that The method adopts the inlaid radial gas seal tooth installation device as described in any one of claims 1 to 6, and the method includes the following installation steps: A. Manually insert the first radial air-sealing tooth (71) and the first caulking strip (72) into the groove of the stator (7), the wall-adhering portion (711) of the radial air-sealing tooth (71) is inserted into the groove along the lower surface of the stator (7) and installed, and the foot (712) of the radial air-sealing tooth (71) is against the bottom end of the groove; the caulking strip (72) is arranged above the wall-adhering portion (711) of the radial air-sealing tooth (71) and is against the foot (712) of the radial air-sealing tooth (71), the upper surface of the caulking strip (72) is closely attached to the upper surface of the groove, and the lower surface of the caulking strip (72) is closely attached to the upper surface of the wall-adhering portion (711) of the radial air-sealing tooth (71); B. After the radial gas seal teeth (71) are embedded in the grooves of the stator (7) through the caulking strips (72), the caulking strips (72) are hammered at intervals with a flat punch (9) and a fitter's hammer to fix the radial gas seal teeth (71); C. Install the stator component (7) on the workbench (8) of the inlaid radial gas seal tooth installation equipment, clamp and install it, install the rolling cutter (63), and roll the radial gas seal tooth (71) and the caulking strip (72) with specified parameters; D. End processing: cutting off the last radial air-sealing tooth (71) and the last caulking strip (72), and performing flattening and inlaying; E. Check whether the installed radial gas seal teeth (71) meet the requirements; F. In step E, if the radial gas sealing teeth (71) after installation meet the requirements, the installation step is completed; if the radial gas sealing teeth (71) after installation do not meet the requirements, it is allowed to use the above steps to re-caulking the parts with poor installation quality.

8. The method for installing the inlaid radial air seal teeth according to claim 7, characterized in that: In step A, during the installation process, the radial air-sealing teeth (71) and the caulking strips (72) are allowed to be connected continuously, the gap M between the connected radial air-sealing teeth (71) is 0-1.5 mm, and the gap N between the connected caulking strips (72) is 0-4 mm; in the starting section, the starting non-overlapping position of the caulking strips (72) and the radial air-sealing teeth (71) is at least 40 mm; in the middle section of the inlay, the spacing distance between the gap M between the connected radial air-sealing teeth (71) and the gap N between the caulking strips (72) is at least 40 mm; In step C, the lower surface of the rolling knife (63) is pressed against the upper surface of the wall-attached portion (711) of the radial air-sealing tooth (71), and the outer end of the rolling knife (63) is pressed against the side surface of the caulking strip (72); In step D, for the gas seal with a center dividing surface, after the last radial gas seal tooth (71) is inlaid, the excess material is cut off, and the joint surface is flattened and protected with a steel belt.

9. The method for installing the inlaid radial air seal teeth according to claim 7, characterized in that In step C, the recommended value of the rolling interference of the rolling cutter (63) is 0.8±0.1 mm.

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