Axial tightness machining device for inner ring of guide and machining method

Abstract

The application discloses a kind of axial tightness processing device and processing method of guider inner ring, wherein the axial tightness processing device of guider inner ring includes base, compression part and press cover, positioning groove is opened in base, positioning groove is used to cooperate with former inner ring, so that former inner ring is positioned relative to base radially, base is fixedly connected with coaxial middle shaft of base;Compression part is threadedly connected on middle shaft and is used to cooperate with clamping groove, so that rear inner ring is fixed relative to compression part circumferentially;The first end of press cover is threadedly connected with middle shaft, the second end of press cover is provided with the avoidance slot for accommodating compression part, and the end face of the second end of press cover is used to abut with outer ring assembly, so that outer ring assembly and former inner ring are clamped between press cover and base, and then outer ring assembly and former inner ring are fixed relative to base circumferentially;Compression part rotates to drive rear inner ring to rotate circumferentially, so that rear inner ring is embedded in former inner ring, and then former inner ring and rear inner ring are installed on outer ring assembly.

Description

Technical Field

[0001] This invention relates to the technical field of aero-engine machining, and in particular, to an axial tightness machining apparatus for a guide vane inner ring. Furthermore, this invention also relates to a machining method including the aforementioned axial tightness machining apparatus for a guide vane inner ring. Background Technology

[0002] like Figure 1 and Figure 2 As shown, the existing aero-engine guide consists of an outer ring assembly, a front inner ring, and a rear inner ring. The front and rear inner rings are screwed onto surfaces A and B of the outer ring assembly. The axial tightness requirement for the front and rear inner rings is 0.1–0.25. By measuring and calculating the combined dimensions of outer ring assembly a, front inner ring b1, and rear inner ring b2, the corresponding physical parts are selected, and the axial tightness value of the assembled parts is obtained.

[0003] In practical implementation, ensuring axial tightness requires that surfaces C and D of the front and rear inner rings fit together after assembly to achieve the corresponding axial tightness. However, the existing method of manually tightening the rear inner ring by rotating it is difficult to guarantee that surface C of the front inner ring fits against surface D of the rear inner ring when the rear inner ring is installed onto the front inner ring. Furthermore, the axial tightness value and whether the tightness is qualified cannot be directly determined by checking the fit of surfaces C and D during the assembly of the front and rear inner rings. Summary of the Invention

[0004] This invention provides an axial tightness processing device and method for the inner ring of a guide, in order to solve the technical problem of how to effectively and conveniently install the guide and ensure that the axial tightness of the guide meets the design requirements.

[0005] According to one aspect of the present invention, an axial tightness machining device for a guide inner ring is provided for mounting a front inner ring and a rear inner ring onto an outer ring assembly, wherein the rear inner ring has a plurality of slots, including:

[0006] A base is provided with a positioning groove, which is used to cooperate with the front inner ring so that the front inner ring is radially positioned relative to the base. A central shaft coaxial with the base is fixedly connected to the base.

[0007] A clamping element, which is threaded onto the central shaft and used to engage with the slot, so that the rear inner ring is circumferentially fixed relative to the clamping element;

[0008] A pressing sleeve, a first end of the pressing sleeve is threadedly connected with the middle shaft, a second end of the pressing sleeve is provided with a avoiding slot for accommodating the pressing part, and an end face of the second end of the pressing sleeve is used for abutting against the outer ring assembly, so that the outer ring assembly and the front inner ring are clamped between the pressing sleeve and the base, and then the outer ring assembly and the front inner ring are fixed in the circumferential direction relative to the base;

[0009] The pressing part is rotated to drive the rear inner ring to rotate in the circumferential direction, so that the rear inner ring is embedded in the front inner ring, and then the front inner ring and the rear inner ring are installed on the outer ring assembly.

[0010] Further, the pressing part comprises a ring sleeve threadedly connected with the middle shaft and a key block detachably connected with the ring sleeve, the key block is used for embedding in the clamping slot, so that the rear inner ring is fixed in the circumferential direction relative to the ring sleeve.

[0011] Further, the number of the key blocks is two, the two key blocks are arranged in the radial direction and are used for corresponding matching with the clamping slots on the rear inner ring.

[0012] Further, the side wall of the pressing sleeve is provided with a movable slot, the ring sleeve is detachably connected with a handle, the handle extends out of the movable slot and is used for driving the ring sleeve to rotate in the circumferential direction.

[0013] Further, the outer side wall of the ring sleeve is provided with a plurality of threaded holes, the plurality of threaded holes are arranged in the circumferential direction of the ring sleeve at intervals, and the handle is threadedly connected with the threaded holes.

[0014] According to another aspect of the present application, an axial tightness processing method of a guider inner ring is also provided, which is performed by using the axial tightness processing device of the guider inner ring, and comprises the following steps:

[0015] S100, the size a of the middle section of the outer ring assembly, the overlapping size b1 of the front inner ring and the middle section of the outer ring assembly, and the overlapping size b2 of the rear inner ring and the middle section of the outer ring assembly are measured, and the axial tightness S of the front inner ring and the rear inner ring is obtained by calculation, S∈(0.1-0.25) mm, the front inner ring and the rear inner ring matched with the front inner ring are selected;

[0016] S200, the inner side end face C of the selected front inner ring is tightly screwed to the inner side end face D of the rear inner ring, so that the outer side end face of the front inner ring coincides with the end face of the rear inner ring facing the front inner ring and forms an end face W, a marker is used to mark the end face W, so that the front inner ring is provided with a first mark, and the rear inner ring is provided with a second mark;

[0017] S300, the front inner ring and the rear inner ring are separated, and a clamping slot is provided on the outer side end face of the rear inner ring away from the front inner ring;

[0018] S400, the front inner ring, the rear inner ring and the outer ring assembly are combined and loaded into the axial tightness processing device of the inner ring of the guide, the pressing part is matched with the positioning groove, the rear inner ring is rotated by rotating the pressing part, the rear inner ring is screwed into the front inner ring, and the first mark and the second mark are overlapped;

[0019] S500, the combination of the front inner ring and the rear inner ring of the end face W is welded and fixed, so that the front inner ring and the rear inner ring are installed on the outer ring assembly to form a guide;

[0020] S600, the guide is taken out from the axial tightness processing device of the inner ring of the guide, and the positioning groove on the rear inner ring is removed by turning processing until the guide meets the design size requirement.

[0021] Further, the step S300 is provided with two clamping grooves, which are symmetrically distributed along the radial direction of the rear inner ring.

[0022] Further, the width of the clamping groove is 4.9-5.1mm, and the depth of the clamping groove is 1.9-2.1mm.

[0023] Further, the step S400 comprises the following steps:

[0024] S401, the front inner ring is pressed into the outer ring assembly, and the rear inner ring is screwed into the front inner ring;

[0025] S402, the front inner ring, the rear inner ring and the outer ring assembly in the combined state are loaded into the axial tightness processing device of the inner ring of the guide, and the front inner ring is matched with the positioning groove, and the key block in the pressing part is matched with the clamping groove;

[0026] S403, rotating the pressing sleeve, so that the outer ring assembly and the front inner ring are clamped between the pressing sleeve and the base, so that the outer ring assembly and the front inner ring are fixed relative to the base in the circumferential direction;

[0027] S404, rotating the handle provided on the pressing part, screwing the rear inner ring into the front inner ring, and overlapping the first mark and the second mark.

[0028] Further, in the step S500, the combination of the front inner ring and the rear inner ring is welded and fixed by three evenly distributed welding points, so that the front inner ring and the rear inner ring are installed on the outer ring assembly to form a guide.

[0029] The present application has the following beneficial effects:

[0030] The axial tightness processing device of the inner ring of the guide device, by opening the positioning groove on the base to abut and position the outer circular side surface of the lower end of the front inner ring and the outer circular bottom end, so that the front inner ring is installed on the base and the front inner ring is positioned radially relative to the base, and then the pressing part is matched with the clamping groove on the rear inner ring, so that the pressing part can drive the rear inner ring to rotate while moving radially along the central axis, and then the rear inner ring is screwed into the front inner ring for installation, and the pressing sleeve is arranged to abut the front inner ring and the outer ring assembly to limit the circumferential fixation of the front inner ring and the outer ring base. At this time, the rear inner ring is installed by rotating the rear inner ring relative to the base through the pressing part. Since the pressing part can be externally mechanically forced to rotate or connected with a shaft rod to increase the torque, the rear inner ring can be easily screwed into the front inner ring.

[0031] In specific implementation, the size a of the middle section of the outer ring assembly, the overlapping size b1 of the front inner ring and the middle section of the outer ring assembly, and the overlapping size b2 of the rear inner ring and the middle section of the outer ring assembly are measured first, and the axial tightness S of the front inner ring and the rear inner ring is obtained by calculation, S = b1 + b2 - a, and the front inner ring and the rear inner ring matching the front inner ring are selected within S ∈ (0.1-0.25) mm; then the inner side end surface C of the selected front inner ring is screwed to the inner side end surface D of the rear inner ring to make the outer side end surface of the front inner ring coincide with the end surface of the rear inner ring facing the front inner ring and form an end surface W, and the end surface W is marked with a marker pen to form a first mark on the front inner ring and a second mark on the rear inner ring; then the front inner ring and the rear inner ring are separated, and the front inner ring, the rear inner ring and the outer ring assembly are combined and loaded into the axial tightness processing device of the inner ring of the guide device, and the pressing sleeve is matched with the positioning groove, and the rear inner ring is rotated by rotating the pressing sleeve to screw the rear inner ring into the front inner ring, and the first mark and the second mark are coincided; the combination of the front inner ring and the rear inner ring of the end surface W is welded and fixed to make the front inner ring and the rear inner ring installed on the outer ring assembly to form a guide device; the guide device is taken out from the axial tightness processing device of the inner ring of the guide device, and the positioning groove on the rear inner ring is removed by turning processing until the guide device meets the design size requirement.

[0032] In summary, the axial tightness processing device of the inner ring of the guide device can ensure that the pressing part can stably and conveniently drive the rear inner ring to rotate when the pressing part is matched with the slot on the rear inner ring, thereby installing the rear inner ring. In the process, the end surface W is marked to intuitively judge the axial tightness of the guide device, and the information of the axial tightness of the guide device is obtained by observing whether the first mark and the second mark are coincided, thereby effectively and conveniently installing the guide device and making the axial tightness of the guide device meet the design requirement.

[0033] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0035] Figure 1 This is a structural schematic diagram of the guide assembly state in this invention;

[0036] Figure 2 This is a schematic diagram of the guide in the separated state of the present invention;

[0037] Figure 3 This is a schematic diagram of the slot on the rear inner ring of a preferred embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the axial tightness processing device for the inner ring of the guide in a preferred embodiment of the present invention;

[0039] Figure 5 This is a top view of the structure of the axial tightness processing device for the inner ring of the guide in a preferred embodiment of the present invention.

[0040] Legend:

[0041] 1. Outer ring assembly; 2. Front inner ring; 3. Rear inner ring; 31. Slot;

[0042] 100. Base; 101. Positioning groove; 102. Central shaft;

[0043] 200. Ring sleeve; 201. Key block; 202. Threaded hole;

[0044] 300, pressure sleeve; 301, movable groove;

[0045] 400. Handle. Detailed Implementation

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0047] like Figures 1-5 As shown, this embodiment provides an axial tightness machining device for the inner ring of a guide, used to install the front inner ring 2 and the rear inner ring 3 onto the outer ring assembly 1. The rear inner ring 3 has several slots 31, including:

[0048] A base 100 is provided with a positioning groove 101 for cooperating with the front inner ring 2 to position the front inner ring 2 radially relative to the base 100, and a middle shaft 102 coaxial with the base 100 is fixedly connected to the base 100;

[0049] A pressing member is threadedly connected to the middle shaft 102 and cooperates with the clamping groove 31 to fix the rear inner ring 3 circumferentially relative to the pressing member;

[0050] A pressing sleeve 300 has a first end threadedly connected to the middle shaft 102, and a second end provided with a clearance groove for receiving the pressing member, and an end face of the second end is used to abut against the outer ring assembly 1 to clamp the outer ring assembly 1 and the front inner ring 2 between the pressing sleeve 300 and the base 100, thereby fixing the outer ring assembly 1 and the front inner ring 2 circumferentially relative to the base 100;

[0051] The pressing member is rotated to drive the rear inner ring 3 to rotate circumferentially, so that the rear inner ring 3 is embedded in the front inner ring 2, and the front inner ring 2 and the rear inner ring 3 are installed on the outer ring assembly 1.

[0052] In this embodiment, the contact portion of the pressing sleeve 300 and the outer ring assembly 1 can be provided with a buffer rubber to prevent wear of the contact portion of the outer ring assembly 1, the clearance groove provided on the pressing sleeve 300 is coaxial with the pressing member and has a gap between the pressing member to avoid interference between the pressing member and the pressing sleeve 300, thereby affecting the rotation of the pressing member.

[0053] Specifically, the positioning groove 101 is provided on the base 100 to abut against the outer circumferential surface of the lower end of the front inner ring 2 and the outer circumferential bottom end to position the front inner ring 2 radially relative to the base 100, and the pressing member cooperates with the clamping groove 31 on the rear inner ring 3 to drive the rear inner ring 3 to rotate while moving radially along the middle shaft 102, thereby rotating the rear inner ring 3 into the front inner ring 2 for installation, and the pressing sleeve 300 is arranged to abut against the front inner ring 2 and the outer ring assembly 1 to limit the circumferential fixation of the front inner ring 2 and the base 100, and the rear inner ring 3 is installed by rotating the rear inner ring 3 circumferentially relative to the base 100 by the pressing member, and the rear inner ring 3 can be easily screwed into the front inner ring 2 by using the pressing member to apply force for rotation or connecting a shaft rod to increase the torque.

[0054] In the implementation, the size a of the middle section of the outer ring assembly 1, the overlapping size b1 of the front inner ring 2 and the middle section of the outer ring assembly 1, and the overlapping size b2 of the rear inner ring 3 and the middle section of the outer ring assembly 1 are measured, and the axial tightness S = b1 + b2 - a of the front inner ring 2 and the rear inner ring 3 is obtained by calculation, the front inner ring 2 and the rear inner ring 3 matching the front inner ring 2 are selected in the range of 0.1-0.25 mm; the inner side end face C of the selected front inner ring 2 is screwed to the inner side end face D of the rear inner ring 3 to make the outer side end face of the front inner ring 2 coincide with the end face of the rear inner ring 3 facing the front inner ring 2 and form an end face W, and the end face W is marked with a marker, so that the front inner ring 2 forms a first mark and the rear inner ring 3 forms a second mark; then the front inner ring 2 and the rear inner ring 3 are separated, and the front inner ring 2, the rear inner ring 3 and the outer ring assembly 1 are combined and loaded into the axial tightness processing device of the inner ring of the guide, the pressing sleeve 300 is matched with the positioning groove 101, the rear inner ring 3 is rotated by rotating the pressing sleeve 300 to make the rear inner ring 3 screwed into the front inner ring 2, and the first mark and the second mark are coincided; the combination of the front inner ring 2 and the rear inner ring 3 at the end face W is welded and fixed to make the front inner ring 2 and the rear inner ring 3 installed on the outer ring assembly 1 to form a guide; the guide is taken out from the axial tightness processing device of the inner ring of the guide, and the positioning groove 101 on the rear inner ring 3 is removed by turning until the guide meets the design size requirement.

[0055] In summary, the axial tightness of the guide is judged by marking the end face W, and the information of the axial tightness of the guide is obtained by observing whether the first mark and the second mark are coincided, so that the guide is installed effectively and conveniently, and the axial tightness of the guide meets the design requirement.

[0056] Further, the pressing member comprises a ring sleeve 200 screwed on the middle shaft 102 and a key block 201 detachably connected to the ring sleeve 200, and the key block 201 is used to be embedded in the clamping groove 31 to fix the rear inner ring 3 relative to the ring sleeve 200 in the circumferential direction.

[0057] In the embodiment, the ring sleeve 200 is threadedly connected with the middle shaft 102, so that when the ring sleeve 200 is rotated, the ring sleeve 200 can be axially moved along the middle shaft 102. In use, the side wall of the ring sleeve 200 is provided with a receiving opening for accommodating the key block 201, the key block 201 is detachably connected to the ring sleeve 200 by a screw, one end of the key block 201 towards the rear inner ring 3 has a clamping block extending into the clamping groove 31 of the rear inner ring 3, and the key block 201 can also have a slope for avoiding the rear inner ring 3, so as to prevent the key block 201 from interfering with the rear inner ring 3 and affecting the cooperation of the clamping block and the clamping groove 31. The connection of the key block 201 and the clamping groove 31 enables the ring sleeve 200 to drive the rear inner ring 3 to rotate, thereby facilitating the screwing of the rear inner ring 3 into the front inner ring 2.

[0058] Further, the number of the key blocks 201 is two, and the two key blocks 201 are arranged radially symmetrically and used for corresponding matching with the clamping grooves 31 on the rear inner ring 3. In the embodiment, the number of the key blocks 201 is two and they are symmetrically distributed in the radial direction, and the number of the corresponding clamping grooves 31 is also two. This arrangement can ensure uniform force application when the ring sleeve 200 applies force to the rear inner ring 3, preventing damage to the rear inner ring 3 caused by unilateral force application. In other embodiments, the number of the key blocks 201 can also be multiple and they are uniformly distributed in the circumferential direction of the ring sleeve 200.

[0059] Further, the side wall of the pressing sleeve 300 is provided with a movable groove 301, the ring sleeve 200 is detachably connected with a handle 400, the handle 400 extends out of the movable groove 301 and is used for driving the ring sleeve 200 to rotate in the circumferential direction. In the embodiment, the movable groove 301 is a long groove provided in the circumferential direction of the side wall of the pressing sleeve 300, the handle 400 extends out of the movable groove 301 and is used for driving the ring sleeve 200 to rotate in the circumferential direction, and the movable groove 301 enables the handle 400 to rotate without driving the pressing sleeve 300 to rotate. In other embodiments, multiple movable grooves 301 can be provided to facilitate the handle 400 to rotate the ring sleeve 200 in the whole circumferential direction, thereby enabling the rear inner ring 3 to be completely screwed into the front inner ring 2.

[0060] Further, a plurality of threaded holes 202 are provided in the outer side wall of the ring sleeve 200, and the plurality of threaded holes 202 are arranged at intervals in the circumferential direction of the ring sleeve 200, and the handle 400 is threadedly connected with the threaded holes 202.

[0061] In the embodiment, the plurality of threaded holes 202 can be used to cooperate with the handle 400 to rotate the ring sleeve 200 in the whole circumferential direction. Specifically, when the handle 400 is rotated to be blocked by the movable groove 301, the handle 400 can be detached and then installed to another threaded hole 202 for rotating the ring sleeve 200 again.

[0062] According to another aspect of the present application, there is also provided an axial tightness processing method of a guide inner ring, which is processed by the axial tightness processing device of the guide inner ring described above, and comprises the following steps:

[0063] S100, measuring the size a of the middle section of the outer ring assembly 1, the overlapping size b1 of the front inner ring 2 and the middle section of the outer ring assembly 1, and the overlapping size b2 of the rear inner ring 3 and the middle section of the outer ring assembly 1, and obtaining the axial tightness S = b1 + b2 - a of the front inner ring 2 and the rear inner ring 3 by calculation, selecting the front inner ring 2 and the rear inner ring 3 matched with the front inner ring 2, S ∈ (0.1-0.25) mm;

[0064] S200, tightening the inner side end face C of the selected front inner ring 2 to the inner side end face D of the rear inner ring 3 to make the outer side end face of the front inner ring 2 coincide with the end face of the rear inner ring 3 facing the front inner ring 2 and form an end face W, marking the end face W with a marker, so that the front inner ring 2 is formed with a first mark and the rear inner ring 3 is formed with a second mark;

[0065] S300, separating the front inner ring 2 from the rear inner ring 3, and opening a clamping groove 31 on the outer side end face of the rear inner ring 3 away from the front inner ring 2;

[0066] S400, combining the front inner ring 2, the rear inner ring 3 and the outer ring assembly 1, and then loading them into the axial tightness processing device of the guide inner ring, cooperating the pressing part with the positioning groove 101, rotating the pressing part to drive the rear inner ring 3 to rotate, so that the rear inner ring 3 is screwed into the front inner ring 2, and the first mark and the second mark coincide;

[0067] S500, welding and fixing the combination of the front inner ring 2 and the rear inner ring 3 at the end face W, so that the front inner ring 2 and the rear inner ring 3 are installed on the outer ring assembly 1 to form a guide;

[0068] S600, taking the guide out of the axial tightness processing device of the guide inner ring, and removing the positioning groove 101 on the rear inner ring 3 by turning until the guide meets the design size requirements.

[0069] In this embodiment, for step S100, the front inner ring 2 and the rear inner ring 3 are first selected by measurement, so that the selected front inner ring 2 and the matched rear inner ring 3 meet the assembly requirements of the axial tightness, reducing the subsequent rework rate and improving the processing and assembly efficiency.

[0070] For step S200, the end face W is marked to convert the internal abutting end faces C and D into an external end face W that can be directly observed, solving the problem that the assembly state of the existing front inner ring 2 and the rear inner ring 3 cannot be directly detected by the abutting condition of the end faces C and D to obtain the specific value of the axial tightness and judge whether the tightness is qualified, and in the subsequent detection, only whether the first mark and the second mark coincide need to be observed.

[0071] For step S300, in order to ensure that the rear inner ring 3 can rotate stably, the number of key blocks 201 is two, and the two key blocks 201 are arranged radially symmetrically and used for corresponding matching with the clamping grooves 31 on the rear inner ring 3. In the embodiment, the number of key blocks 201 is two, and the key blocks 201 are arranged radially symmetrically. The number of corresponding clamping grooves 31 is also two. In this way, when the ring sleeve 200 applies force to the rear inner ring 3, it can be ensured that the force is uniformly applied, and damage to the rear inner ring 3 caused by unilateral force can be prevented.

[0072] For step S600, the positioning groove 101 on the rear inner ring 3 is removed until the guide meets the design size requirement, so that the guide meets the assembly and use requirement.

[0073] Further, in step S300, the clamping groove 31 is provided with two, and is arranged radially symmetrically along the rear inner ring 3. In the embodiment, in order to ensure that the rear inner ring 3 can rotate stably, the number of key blocks 201 is two, and the two key blocks 201 are arranged radially symmetrically and used for corresponding matching with the clamping grooves 31 on the rear inner ring 3. In the embodiment, the number of key blocks 201 is two, and the key blocks 201 are arranged radially symmetrically. The number of corresponding clamping grooves 31 is also two. In this way, when the ring sleeve 200 applies force to the rear inner ring 3, it can be ensured that the force is uniformly applied, and damage to the rear inner ring 3 caused by unilateral force can be prevented.

[0074] Further, the width of the clamping groove 31 is 4.9-5.1 mm, and the depth of the clamping groove 31 is 1.9-2.1 mm. In the embodiment, the depth and width of the clamping groove 31 are limited. If the size of the clamping groove 31 is too small, the key block 201 is easy to slide out and separate from the circumferential limiting of the rear inner ring 3 after assembly. If the size of the clamping groove 31 is too large, the guide is difficult to be installed on the axial tightness processing device of the guide inner ring.

[0075] Further, step S400 includes the following steps:

[0076] S401, press the front inner ring 2 into the outer ring assembly 1, and screw the rear inner ring 3 into the front inner ring 2;

[0077] S402, assemble the front inner ring 2, the rear inner ring 3 and the outer ring assembly 1 in the combined state into the axial tightness processing device of the guide inner ring, and make the front inner ring 2 cooperate with the positioning groove 101, and make the key block 201 in the pressing piece cooperate with the clamping groove 31;

[0078] S403, rotate the pressing sleeve 300, so that the outer ring assembly 1 and the front inner ring 2 are clamped between the pressing sleeve 300 and the base 100, and then the outer ring assembly 1 and the front inner ring 2 are fixed circumferentially relative to the base 100;

[0079] S404, rotating the handle 400 arranged on the pressing member, screwing the rear inner ring 3 into the front inner ring 2, and making the first mark and the second mark coincide.

[0080] In the embodiment, for step S401, preassembling the guide can reduce the rotation amount of the handle 400 during installation of the axial tightness processing device of the subsequent guide inner ring, thereby improving the subsequent assembly efficiency. During preassembly, the rear inner ring 3 is manually screwed into the front inner ring 2 until it is difficult to rotate.

[0081] For step S404, the ring sleeve 200 is forced by the handle 400, the force is increased in the form of torque, so that the ring sleeve 200 can drive the rear inner ring 3 to be completely screwed into the front inner ring 2.

[0082] Further, in step S500, the combination of the front inner ring 2 and the rear inner ring 3 is welded and fixed by three evenly distributed welding points, so that the front inner ring 2 and the rear inner ring 3 are installed on the outer ring assembly 1 to form a guide. In the embodiment, 3 fixed inner rings are evenly welded at the combination of the front inner ring 2 and the rear inner ring 3 at the W end, so as to prevent the relative circumferential position of the two inner rings from changing during subsequent processing or when the engine is used, thereby affecting the axial tightness.

[0083] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An axial tightness processing device of a guider inner ring, used for mounting a front inner ring (2) and a rear inner ring (3) to an outer ring assembly (1), wherein a plurality of clamping grooves (31) are formed on the rear inner ring (3), characterized in that, The utility model relates to a kind of outer ring assembly and its installation method, including: Base (100), the base (100) is opened with positioning slot (101), the positioning slot (101) is used to cooperate with the front inner ring (2), to make the front inner ring (2) relative to the base (100) radial positioning, the base (100) is fixedly connected with the coaxial middle shaft (102) of the base (100); Compression part, the compression part is threadedly connected on the middle shaft (102) and is used to cooperate with the card slot (31), to make the rear inner ring (3) relative to the compression part circumferential fixed;The compression part includes ring sleeve (200) and detachably connected key block (201) on the ring sleeve (200) that are threadedly connected on the middle shaft (102); Pressing sleeve (300), the first end of the pressing sleeve (300) is threadedly connected with the middle shaft (102), the second end of the pressing sleeve (300) is opened with the avoidance slot for accommodating the compression part, and the end face of the second end of the pressing sleeve (300) is used to abut with the outer ring assembly (1), so that the outer ring assembly (1) and the front inner ring (2) are clamped between the pressing sleeve (300) and the base (100), to make the outer ring assembly (1) and the front inner ring (2) relative to the base (100) circumferential fixed;The side wall of the pressing sleeve (300) is opened with movable slot (301), the ring sleeve (200) is detachably connected with handle (400), the handle (400) extends movable slot (301) and is used to drive the ring sleeve (200) circumferential rotation; The compression part rotates to drive the rear inner ring (3) circumferential rotation, to make the rear inner ring (3) embed in the front inner ring (2), to make the front inner ring (2) and the rear inner ring (3) install to outer ring assembly (1).

2. The axial tightness machining device of the inner ring of the guide according to claim 1, characterized in that, The key block (201) is used to embed the card slot (31), to make the rear inner ring (3) relative to the ring sleeve (200) circumferential fixed.

3. The axial tightness machining device of an inner ring of a guide according to claim 2, characterized in that, The number of the key block (201) is two, and the two key blocks (201) are symmetrically arranged along the radial direction and are used to correspondingly match the card slot (31) on the rear inner ring (3).

4. The axial tightness machining device of an inner ring of a guide according to claim 2, characterized by, The outer side wall of the ring sleeve (200) is opened with a plurality of threaded holes (202), and a plurality of threaded holes (202) are spaced apart along the circumference of the ring sleeve (200), and the handle (400) is threadedly connected with the threaded hole (202).

5. A method for processing the axial tightness of an inner ring of a guide, using the processing device for the axial tightness of the inner ring of the guide according to claim 1, characterized by, The utility model relates to a kind of outer ring assembly and its installation method, including: S100, the size a of the intermediate section of outer ring assembly (1), the overlap size b1 of the front inner ring (2) and the intermediate section of outer ring assembly (1) and the overlap size b2 of the rear inner ring (3) and the intermediate section of outer ring assembly (1) are measured, and the axial tightness S =b1+b2-a of the front inner ring (2) and the rear inner ring (3) is obtained by calculation, selects S ∈ (0.1~0.25) mm between the front inner ring (2) and the rear inner ring (3) that matches the front inner ring (2); S200, the inner side end face C of the selected front inner ring (2) is tightened to the inner side end face D of the rear inner ring (3) to make the outer side end face of the front inner ring (2) coincide with the end face of the rear inner ring (3) towards the end face of the front inner ring (2) and form an end face W, and the end face W is marked with a marker, so that the front inner ring (2) is formed with a first mark, and the rear inner ring (3) is formed with a second mark; S300, the front inner ring (2) and the rear inner ring (3) are separated, and a clamping groove (31) is formed on the outer side end face of the rear inner ring (3) away from the front inner ring (2); S400, the front inner ring (2), the rear inner ring (3) and the outer ring assembly (1) are combined and loaded into the axial tightness processing device of the inner ring of the guide, the pressing part is matched with the positioning groove (101), the rear inner ring (3) is rotated by rotating the pressing part, the rear inner ring (3) is screwed into the front inner ring (2), and the first mark and the second mark are coincided; S500, the combination of the front inner ring (2) and the rear inner ring (3) at the end face W is welded and fixed, so that the front inner ring (2) and the rear inner ring (3) are installed on the outer ring assembly (1) to form a guide; S600, the guide is taken out from the axial tightness processing device of the inner ring of the guide, and the positioning groove (101) on the rear inner ring (3) is removed by turning until the guide meets the design size requirement.

6. The method of claim 5, wherein the axial tightness of the inner ring is adjusted by adjusting the axial tightness of the outer ring. In the step S300, the clamping groove (31) is provided with two clamping grooves, which are symmetrically distributed along the radial direction of the rear inner ring (3).

7. The method of claim 5, wherein the axial tightness of the inner ring is adjusted by changing the thickness of the inner ring. The width of the clamping groove (31) is 4.9-5.1mm, and the depth of the clamping groove (31) is 1.9-2.1mm.

8. The method of claim 5, wherein the axial tightness of the inner ring of the guide is processed by, The step S400 includes the following steps: S401, the front inner ring (2) is pressed into the outer ring assembly (1), and the rear inner ring (3) is screwed into the front inner ring (2); S402, the front inner ring (2), the rear inner ring (3) and the outer ring assembly (1) in the combined state are loaded into the axial tightness processing device of the inner ring of the guide, the front inner ring (2) is matched with the positioning groove (101), and the key block (201) in the pressing part is matched with the clamping groove (31); S403, rotating the pressing sleeve (300), so that the outer ring assembly (1) and the front inner ring (2) are clamped between the pressing sleeve (300) and the base (100), and then the outer ring assembly (1) and the front inner ring (2) are fixed relative to the base (100) in the circumferential direction; S404, rotating the handle (400) provided on the pressing part, the rear inner ring (3) is screwed into the front inner ring (2), and the first mark and the second mark are coincided.

9. The method of claim 5, wherein the axial tightness of the inner ring of the guide is processed by, In the step S500, the combination of the front inner ring (2) and the rear inner ring (3) is welded and fixed by three uniform welding points, so that the front inner ring (2) and the rear inner ring (3) are installed on the outer ring assembly (1) to form a guide.

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