Assembling and correcting method and clamp for spoke type bearing chamber

Abstract

The invention discloses an assembling and correcting method and clamp for a spoke type bearing chamber, and belongs to the field of motor assembling. The assembling mechanism comprises a base, a positioning plate rotatably mounted on the base, a handle for driving the positioning plate to rotate, and a supporting plate and a special-shaped screw which are used for jacking the shell; wherein the upper end face of the positioning plate is precisely matched with an outer spigot of the shell 1 through an annular groove, and a positioning reference is established; the detection mechanism comprises a three-dimensionally adjustable supporting rod group, an adjusting block and a dial indicator, and the supporting rod group realizes fine adjustment of the spatial position through the adjusting block; and the positioning shaft assembly is coaxially mounted in the center hole of the positioning plate, penetrates through the inner hole of the bearing bush and is used as a direct measurement reference. According to the invention, a design reference (a shell outer spigot) is directly converted into an assembly reference, so that indirect measurement errors are avoided; dependence on large equipment, multi-person cooperation and operator experience is eliminated, and efficient operation of a single person and a single tool is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of motor assembly, and particularly relates to a method for assembling and correcting a spoke bearing chamber and a clamp. BACKGROUND

[0002] In the field of motor assembly, the spoke bearing chamber has a very high requirement (≤Φ0.03mm) for assembly coaxiality due to its special structural design (such as 24 spoke radially tensioned bearing bush). The traditional assembly process has significant defects: Reference transfer error: the design reference is the shell Φ177.75 outer stop, but the correction uses the Φ198.8 inner stop as an indirect reference. Although they are theoretically concentric, actual processing errors may cause the reference to deviate, affecting the accuracy of the coaxiality measurement.

[0003] Human-machine cooperation is inefficient: pre-assembly requires two people to visually align the spokes and threaded holes, which can easily cause the spokes to be skewed and the threads to be damaged; correction relies on a boring machine and manual reading of a dial gauge, and the quality consistency is poor due to the skill differences of operators, with a rework rate of more than 30%.

[0004] Strong dependence on equipment: the large boring machine needs to be occupied for correction, production flexibility is poor, and it is difficult to change types, and the workpiece needs to be repeatedly disassembled and assembled before pouring and sealing, further increasing the quality risk. SUMMARY

[0005] The technical problem to be solved is: In order to avoid the shortcomings of the prior art, the present application provides a method for assembling and correcting a spoke bearing chamber and a clamp. The clamp finds the center of the bearing bush through the positioning shaft assembly, and the spoke bearing chamber can be rotated as a whole by rotating the handle, which facilitates the assembly of all spokes. The special-shaped screw and the support plate are used to easily take and place the assembled parts; the detection mechanism can directly align the inner circle (upper and lower parts) of the bearing bush, read the reading of the dial gauge by rotating the part, and real-time detect the coaxiality (whether the deviation is within 0.03mm) of the bearing bush and the outer circle of the shell. The adjusting block and the support rod can flexibly adjust the detection position. The present application directly converts the design reference (shell outer stop) into an assembly reference, avoiding indirect measurement errors; eliminating the dependence on large equipment, multiple cooperation and operator experience, and realizing efficient operation of "single person and single tooling".

[0006] The technical solution of the present application is: a spoke bearing chamber assembly and correction clamp, the spoke bearing chamber comprising a shell 1, a bearing bush 2, and a plurality of spokes 4 connected between the two in the circumferential direction; the clamp comprising: An assembly mechanism: including a base 9, a positioning plate 20 rotatably mounted on the base, a handle 17 for driving the rotation of the positioning plate, and a support plate 24 and a special-shaped screw 23 for jacking the shell; wherein the upper end surface of the positioning plate is precisely matched with the shell 1 outer stop through an annular groove, establishing a positioning reference; Detection mechanism: including three-dimensional adjustable support group, adjusting block and dial indicator 7, the support group through the adjusting block to achieve spatial position fine tuning; Positioning shaft assembly 16: coaxially installed in the center hole of the positioning plate 20, and penetrates through the inner hole of the bearing bush, as a direct measurement reference.

[0007] The further technical scheme of the present application is that the positioning plate 20 is a stepped shaft structure, which is sequentially a rotating shaft, a shaft shoulder and a positioning shaft along the axial direction; the rotating shaft is rotatably connected to the base 9; an annular groove is opened on the end face of the shaft shoulder, and the outer ring surface and the groove bottom surface in the annular groove serve as the installation reference surface of the housing outer stopper; the positioning shaft is provided with a center hole, which cooperates with the positioning shaft assembly 16 to serve as the installation reference of the bearing bush; Among them, the outer edge ring surface of the shaft shoulder upper end face is circumferentially distributed with a plurality of grooves, and the threaded through hole is opened in the groove bottom, which is used for installing the support plate 24 and the special-shaped screw 23; the axial height of the support plate 24 is adjusted by rotating the special-shaped screw 23, and then the axial thrust is applied to the shaft shoulder at the outer edge of the housing stopper, so that the jacking of the housing is completed.

[0008] The further technical scheme of the present application is that the positioning shaft assembly 16 includes coaxially nested conical shaft segment 161 and threaded shaft segment 162; the small-diameter end of the conical shaft segment 161 is coaxially precisely matched with the center hole of the positioning plate 20, and the installation gap is 0.005-0.01, and the shaft shoulder is gap matched with the inner hole of the bearing bush; the bottom of the threaded shaft segment 162 is threadedly connected with the top of the conical shaft segment 161, and the top extends to the outside of the housing along the axial direction. The further technical scheme of the present application is that the positioning plate 20 of the assembly mechanism is limited in rotation by the rotating ring 18, the rotating ring 18 is a circular ring structure installed on the base 9 by a positioning pin and a screw, and the ring wall is provided with a radial through hole; the rotating shaft of the positioning plate 20 is coaxially installed in the inner hole of the rotating ring, and the gap between them forms a rotating pair, and the outer circumferential surface of the rotating shaft is provided with an annular groove opposite to the radial through hole; after the positioning plate is rotated in place, the positioning of the positioning plate is completed by the positioning pin inserted into the annular groove through the radial through hole.

[0009] The further technical scheme of the present application is that the support group of the detection mechanism includes: The vertical support rod 10 is fixed on the base 9, and the axial direction thereof is perpendicular to the mounting end face of the base; The horizontal support rod 12 is perpendicularly connected with the vertical support rod 10 through the first adjusting block 13, so as to realize the adjustment of the height and the horizontal position; The cantilever support rod 14 is perpendicularly connected with the horizontal support rod 12 through the second adjusting block 15, so as to realize the lifting and angular deflection of the dial indicator 7.

[0010] Further technical solutions of the present application are that the end of the cantilever support rod 14 is provided with a blind hole for clamping the dial gauge 7 and locking by a internal hexagonal screw 254, and the axis thereof is parallel to the reference axis of the positioning shaft assembly 16. A spoke bearing chamber assembly and correction method based on a spoke bearing chamber assembly and correction clamp, the specific steps comprising: Step S1: Place the shell 1 on the positioning plate 20 of the clamp, and install the reference by the cooperation of the annular groove on the positioning plate 20 and the outer stop of the shell; Step S2: The bearing bush 2 is positioned on the positioning plate positioning shaft in the inner cavity of the shell, and automatic centering is realized by the positioning shaft assembly 16 penetrating the inner hole thereof; Step S3: Rotate the positioning plate 20 by the handle 17, and sequentially assemble the gasket 3 and the spoke 4 to the threaded hole of the bearing bush; Step S4: Adjust the detection mechanism to make the dial gauge 7 touch the inner hole of the bearing bush, rotate the positioning plate 20 to drive the whole spoke bearing chamber to rotate, and simultaneously adjust the tightening degree of each spoke, until the runout value is ≤Φ0.01mm.

[0011] Further technical solutions of the present application are that in step S4, the runout detection of the inner holes at the upper and lower ends of the bearing bush is completed by single clamping: First, detect the lower end inner hole, and adjust the lower group of 12 spokes; Then, lift the dial gauge contact to detect the upper end inner hole, and adjust the upper group of 12 spokes.

[0012] Further technical solutions of the present application are that the adjustment of the spoke tightening degree adopts diagonal progressive tightening: when the runout exceeds the standard, loosen the spoke at the over-standard point and tighten the diagonal spoke.

[0013] Further technical solutions of the present application are that after the runout detection is completed, rotate the special-shaped screw 23 to drive the support plate 24 to lift the workpiece, and move the whole workpiece out of the clamp for sealing.

[0014] Beneficial effects The present application has the beneficial effects that: the present application takes "reference reconstruction + process integration" as the core, converts the assembly process which originally depends on high-skilled personnel, large equipment and quality fluctuation into a standardized process of "single person, single tooling, single clamping", realizes the double breakthrough of efficiency and quality under the requirement of aviation level precision, and provides an industry paradigm for high-precision spoke bearing chamber assembly. The specific effect analysis is as follows: 1. Essential improvement of precision Direct reference transmission: the design reference is directly converted into the assembly reference by the precise cooperation of the annular groove of the positioning plate and the outer stop of the shell, the transmission error of the indirect reference in the traditional process is eliminated, the coaxiality detection precision tends to the theoretical limit value, and the actual measurement qualified rate tends to 100%.

[0015] Dynamic closed-loop correction: The dial gauge touches the bearing bush hole in situ, combined with the diagonal progressive spoke adjustment method, real-time feedback coaxiality data, to avoid the cumulative error of traditional step-by-step detection.

[0016] 2. Revolutionary breakthrough in production efficiency Single-person full-process operation: The integrated preloading, correction, and detection functions are integrated into a single tool, and the operator can complete the spoke assembly by rotating the handle without the need for two-person cooperation or visual alignment, reducing single-piece working hours and improving efficiency.

[0017] Zero equipment dependence: Completely replaces the boring machine correction link, saves large equipment occupation time, and the workpiece does not need to be repeatedly disassembled, directly removed before filling and sealing, and the production flexibility is significantly enhanced.

[0018] 3. Fundamental guarantee of quality consistency Tool forced alignment: The positioning shaft assembly automatically centers the bearing bush, and the spoke assembly has no risk of skewing, completely solving the problem of thread hole damage and spoke deformation.

[0019] Standardized detection process: The adjustable support rod group and the adjusting block realize three-dimensional accurate positioning of the dial gauge, eliminating subjective differences in manual reading, and the product pass rate is improved to nearly 100%. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure diagram of a spoke bearing chamber of a certain type of motor; Figure 2 It is a schematic diagram of assembling and calibrating the spoke bearing chamber by a traditional method; Figure 3 It is a structure schematic diagram of the spoke bearing chamber assembly and correction clamp based on the embodiment of the application; Figure 4 It is a structure schematic diagram of the base in the embodiment of the application; Figure 5 It is a structure schematic diagram of the vertical support rod in the embodiment of the application; Figure 6 It is a structure schematic diagram of the horizontal support rod in the embodiment of the application; Figure 7 It is a structure schematic diagram of the first adjusting block in the embodiment of the application; Figure 8 It is a structure schematic diagram of the cantilever support rod in the embodiment of the application; Figure 9 It is a structure schematic diagram of the second adjusting block in the embodiment of the application; Figure 10 It is a structure schematic diagram of the positioning shaft assembly in the embodiment of the application; (a) is a tapered shaft section, (b) is a threaded shaft section, and (c) is an overall assembly diagram of the positioning shaft assembly; Figure 11Structure diagram and description of the handle in the embodiment of the present application; Figure 12 Structure diagram and description of the rotating ring in the embodiment of the present application; Figure 13 Structure diagram and description of the positioning plate in the embodiment of the present application; Figure 14 Structure diagram and description of the special-shaped screw in the embodiment of the present application; Figure 15 Structure diagram and description of the support plate in the embodiment of the present application; Figures 16-23 Assembly relationship and installation process diagram between the components in the embodiment of the present application; Figure 24 Position relationship and adjustment function diagram of the detection mechanism in the embodiment of the present application; Figure 25 First step operation diagram of the embodiment of the present application; Figure 26 Second step operation diagram of the embodiment of the present application; Figure 27 Third step operation diagram of the embodiment of the present application; Figure 28 Fourth step operation diagram of the embodiment of the present application; Figure 29 Fifth step operation diagram of the embodiment of the present application; Figure 30 Sixth step operation diagram of the embodiment of the present application.

[0021] Legend: 1 - housing, 2 - bearing bushing, 3 - gasket (24 pieces), 4 - spoke (24 pieces); 5-1 - boring machine chuck, 5-2 - boring machine platform, 6 - dial indicator clamping tool, 7 - dial indicator (including joint connecting rod), 8 - clamping tool; 9 - base, 10 - vertical support rod, 11 - inner hexagonal screw, 12 - horizontal support rod, 13 - first adjusting block, 14 - cantilever support rod, 15 - second adjusting block, 16 - positioning shaft assembly, 161 - conical shaft section, 162 - threaded shaft section, 17 - handle (2 pieces), 18 - rotating ring, 19 - positioning pin (2 pieces), 20 - positioning plate, 21 - positioning pin, 22 - inner hexagonal screw (4 pieces), 23 - special-shaped screw (4 pieces), 24 - support plate (4 pieces), 25 - inner hexagonal screw (5 pieces: 251-255). DETAILED DESCRIPTION

[0022] The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0023] Reference Figure 1The diagram shows a simplified structure of a spoke-type bearing housing for a certain type of motor. This component includes: housing 1, bearing bushing 2, washer 3, and spokes 4. There are 24 spokes 4, arranged in two groups of 12 each. There are also 24 washers 3, which are auxiliary fasteners for each spoke 4.

[0024] Figure 1 The bearing bushing 2 shown The inner circle is the bearing housing of this type of motor. The outer circle of the bearing bushing has two sets of threaded holes, upper and lower, each set containing 12 holes. Simultaneously, the outer circle of the housing 1 also has two sets of through holes, upper and lower, each set containing 12 holes. The spokes 4 pass through the through holes on the housing 1 and are screwed into the threaded holes on the bearing bushing 2, thus installing the bearing bushing 2 inside the housing 1. Technical requirements: Bearing housing of bearing bushing 2 The inner circle relative to shell 1 The coaxiality of the reference circle does not exceed Φ0.03. All other dimensions shown in the figure are the material dimensions of the housing 1, which were machined before the spokes 4 were assembled.

[0025] After spoke 4 is assembled and aligned, the fastening parts of spoke 4 need to be filled with adhesive to increase the mechanical strength of the overall assembly and prevent loosening or other abnormalities.

[0026] Reference Figure 2 As shown, the current assembly process steps are as follows: Step 1: Pre-installation Two operators work together. One person holds the bearing bushing 2 and places it in the corresponding position inside the housing 1, while the other person assembles the spokes 4 (with the washer 3 pre-fitted onto the hexagonal head of the spokes 4) on the outside of the housing 1. At this time, the threaded hole of the bearing bushing 2 needs to be visually located. The operator holding the bearing bushing 2 makes circumferential adjustments so that the external thread of the spoke 4 can be screwed into the threaded hole of the bearing bushing 2. The normal pre-tightening is sufficient (the tightening degree needs to be adjusted later). All spokes 4 are pre-assembled diagonally in sequence.

[0027] Step 2: Calibration The calibration work is completed on a boring machine, converting coaxiality into runout for monitoring. For example... Figure 6 As shown in the figure, 5-1 is the boring machine chuck, 5-2 is the boring machine platform, 6 is the clamping fixture for the dial indicator, 7 is the dial indicator (including the joint connecting rod), and 8 is the clamping fixture.

[0028] 2.1 Clamping the workpiece: First, place the workpiece that has been pre-assembled in the first step on the platform of the boring machine 5-2, and fasten it with the clamping fixture 8 so that the workpiece and the boring machine become one. 2.2 Clamping the dial indicator: Use the dial indicator clamping fixture 6 to clamp the dial indicator 7 (including the joint connecting rod) onto the chuck 5-1 of the boring machine; 2.3 Determine the reference: Connect the contacts of dial indicator 7 to housing 1. For the inner diameter section, manually rotate the boring machine chuck 5-1 circumferentially and read the dial indicator reading. Theoretically, the smaller the runout, the better; ideally, it should be zero. During this process, the dial indicator reading can be minimized by adjusting the position of the boring machine platform 5-2 (forward-backward, left-right). The inner circle may have a flattened ellipse (within the design allowable range), and the engineering specification gives this runout value not greater than Φ0.01; 2.4 Locking the reference: After determining the reference, lock the boring machine platform 5-2 tightly. It must not be loose or displaced, otherwise the reference will be offset. 2.5 Lower spoke tightening: Connect the contact of dial indicator 7 to bearing bushing 2. At the lower end of the inner circle, manually rotate the boring machine chuck 5-1 circumferentially and read the dial indicator reading. This value is equivalent to the coaxiality of the bearing housing of the bearing bushing 2 relative to the reference circle of the housing 1, and the technical requirement is not to exceed Φ0.03. For areas exceeding Φ0.03, the tightening of the spokes 4 needs to be adjusted. Generally, diagonal adjustment is required; if one side is slightly loose, the opposite side needs to be slightly tighter. Adjust the tightening of each of the 12 spokes 4 at the lower end sequentially, ensuring that the boring machine chuck 5-1 rotates circumferentially to... When the lower end of the inner circle is completely circled, the dial indicator reading does not exceed Φ0.03.

[0029] 2.6 Tighten the upper spokes: Connect the contact of dial indicator 7 to... At the upper end of the inner circle, then, as in 2.5, tighten the upper group of spokes.

[0030] 2.7 Overall Retest: After the two groups of 24 spokes 4 were tightened, the shell 1 was retested. Inner circle part, bearing bushing 2 The final runout value of the upper and lower ends of the inner circle section was re-measured, and the shell 1's... The runout of the inner circle is no greater than Φ0.01, which conforms to the initial reference, indicating that there was no displacement or other abnormality during the locking of the boring machine platform 5-2, and the bearing bushing 2... The runout at the upper and lower ends of the inner circle is no greater than [value missing]. Φ0.03. Overall tightening is qualified and effective. If there is any abnormality, repeat steps 2.3 to 2.7 to tighten until qualified.

[0031] Step 3: Sealing Remove the properly tightened workpiece from the boring machine and seal the four ends of all spokes (see...). Figure 1 (I1 magnification), the process is complete once the adhesive has cured.

[0032] Problems with existing technology: 1. Design drawing requirements of the reference is the outer stop of the shell 1 But the correction reference used in the prior art is the inner stop of the shell 1 Although it is theoretically concentric, there may be deviations in the actual state, and the influence of such deviations on the final coaxiality of the product cannot be determined, which is equivalent to indirect detection; 2. In the operation process, one person cannot complete the operation, and at least two people must cooperate to complete it. In the pre-assembly process, it is more likely to cause skewing and damage to the threaded hole of the bearing bush 2 or deformation of the spoke 4 due to reliance on manual visual alignment; The correction process needs to rely on a boring machine and manual reading of the value of the dial gauge to determine the corresponding position of the spoke to be tightened. Depending on the skill and experience of different operators, the consistency of the coaxiality of the workpiece formed at the end is poor, and the degree of defect is different. Once the coaxiality deviates, the motor bearing assembly will cause hidden troubles to the entire machine, and situations such as rework and repair, and scrap of components are common and the production efficiency is low.

[0033] Based on the above problems, the present application aims at the process difficulty in the assembly process of such a motor, and uses a set of fixtures to complete the original technology, realizes "two-in-one" operation through support and fastening, and a single person can complete the assembly, correction, detection and other operations, greatly improving the process and production efficiency of the operation process, and ensuring good quality consistency. While reducing the labor, it avoids the risks of rework and repair, component scrap, and can directly reduce the production cost. The specific scheme is as follows: The present application provides a spoke bearing chamber assembly and correction fixture, the spoke bearing chamber comprising a shell 1, a bearing bush 2, and a plurality of spokes 4 connected between the two in the circumferential direction; the fixture comprises: Assembly mechanism: including a base 9, a positioning plate 20 rotatably mounted on the base, a handle 17 for driving the rotation of the positioning plate, and a support plate 24 and a special-shaped screw 23 for jacking the shell; wherein the upper end surface of the positioning plate is in precise interference fit with the outer stop of the shell 1 through an annular groove, establishing a positioning reference; Detection mechanism: including a three-dimensionally adjustable support rod group, an adjusting block and a dial gauge 7, the support rod group realizes space position fine adjustment through the adjusting block; Positioning shaft assembly 16: coaxially installed in the center blind hole of the positioning plate 20, and penetrates the inner hole of the bearing bush, serving as a direct measurement reference.

[0034] The present application also provides a spoke bearing chamber assembly and correction method based on the spoke bearing chamber assembly and correction fixture, and the specific steps include: Step S1: Place the shell 1 on the positioning plate 20 of the fixture, and install and establish the reference by fitting the annular groove on the positioning plate 20 with the outer stop of the shell; Step S2: Place the bearing bush 2 on the positioning shaft of the top plate of the shell inner cavity, and realize automatic centering by penetrating the inner hole of the bearing bush with the positioning shaft assembly 16; Step S3: by rotating the positioning plate 17, the washer 3 and the spoke 4 are sequentially assembled to the threaded hole of the bearing bush; Step S4: adjusting the detection mechanism to make the dial gauge 7 touch the inner hole of the bearing bush, rotating the positioning plate 20 to drive the spoke bearing chamber as a whole, and synchronously adjusting the tightening degree of each spoke until the runout value is ≤Φ0.01mm.

[0035] The above technical solutions are further described in combination with the accompanying drawings: In one embodiment, referring to Figure 3 , the set of clamps referred to in this embodiment is shown in Figure 3 , which contains 17 kinds of components, including 12 kinds of components designed by the inventor (see Table 1), and 5 kinds of national standard components selected by the inventor (see Table 2).

[0036] Table 1 Summary of Components Designed by Inventor

[0037] Table 2 Summary of Selected Standard Components

[0038] The clamp contains two functional modules, assembly mechanism and detection mechanism, wherein the detection mechanism is composed of vertical support 10, horizontal support 12, first adjusting block 13, cantilever support 14, and second adjusting block 15, in addition to a set of universal dial gauge 7, and the rest belongs to the assembly mechanism. In one embodiment, referring to Figure 4 , the base 9 is in the shape of a round cake, used for supporting the whole clamp; the 4-M8 threaded hole on the Φ145±0.1 positioning circle is used to install the rotating ring 18; the hole on the Φ145±0.1 positioning circle is matched with the rotating ring 18, and the rotating ring 18 is locked with the circumferential position of the base by the positioning pin 19; the hole is used to install the vertical support 10; the M5 threaded hole is a top screw hole, into which the inner hexagonal screw 11 is screwed to tighten the vertical support 10.

[0039] In one embodiment, referring to Figure 5 , the vertical support 10 is in the shape of a stepped long rod, with the large-diameter end installed in the hole of the base 9 and tightened by the inner hexagonal screw 11, and the thin end is vertically erected; the small-diameter end is installed with the first adjusting block 13; In one embodiment, referring to Figure 6 , the horizontal support 12 is in the shape of a long rod, which is installed through the hole of the first adjusting block 13 and the hole of the second adjusting block 15.

[0040] In one embodiment, referring to Figure 7 , the first adjusting block 13 is in the shape of a long block with a through hole and a threaded hole; the through hole is used for the small-diameter end of the horizontal support rod 12 to pass through; the threaded hole is used for the small-diameter end of the vertical support rod 10 to pass through. In one embodiment, referring to , the cantilever support rod 14 is in the shape of a stepped long rod with a blind hole and a threaded hole at the large-diameter end; the small-diameter end passes through the hole of the second adjusting block 15; the blind hole at the large-diameter end is used for clamping the dial gauge 7.

[0041] Figure 8 In one embodiment, referring to , the second adjusting block 15 is in the shape of a long block with a through hole and a threaded hole; the through hole is used for the small-diameter end of the cantilever support rod 14 to pass through; the other through hole is used for the small-diameter end of the horizontal support rod 12 to pass through.

[0042] In one embodiment, referring to Figure 9 , the positioning shaft assembly 16 includes a tapered shaft segment 161 and a threaded shaft segment 162 for accurate positioning of the bearing bushing 2. The tapered shaft segment 161 is in the shape of a stepped shaft; the M14 threaded hole part is used for the M14 external thread of the threaded shaft segment 162 to be screwed in; the Φ62* part is the reference for the future bearing chamber; the Φ40* part precisely fits with the Φ40** part of the positioning plate 20 with a gap of 0.005-0.01. The threaded shaft segment 162 is in the shape of a stepped shaft; the M14 external threaded hole part is used for the M14 threaded hole of the tapered shaft segment 161 to be screwed in. In one embodiment, referring to , the handle 17 is common in the entire set of clamps, in the shape of an L-shaped round bar with an external thread at one end; the M12 external thread part is screwed into the two M12 threaded holes of the positioning plate 20, firmly welded on the side, and integrated with the positioning plate 20; this part is for the operator to use leverage when rotating the positioning plate 20.

[0043] Figure 10 In one embodiment, referring to , the rotating ring 18 is in the shape of a circular ring and is installed on the base 9; the 4-Φ14, 4-Φ9 stepped holes on the Φ145±0.2 positioning circle and the 4-M8 mounting holes on the base 9 are aligned, and after the 22-internal hexagonal screws (4 pieces) pass through these holes, they are screwed into the 4-M8 threaded holes of the base 9; the 4-Φ14 holes on the Φ145±0.2 positioning circle are used for the positioning of the positioning plate 20.

[0044] Figure 11 In one embodiment, referring to , the rotating ring 18 is in the shape of a circular ring and is installed on the base 9; the 4-Φ14, 4-Φ9 stepped holes on the Φ145±0.2 positioning circle and the 4-M8 mounting holes on the base 9 are aligned, and after the 22-internal hexagonal screws (4 pieces) pass through these holes, they are screwed into the 4-M8 threaded holes of the base 9; the 4-Φ14 holes on the Φ145±0.2 positioning circle are used for the positioning of the positioning plate 20.

[0045] Figure 12 In one embodiment, referring to ​​The hole mates with the base 9, and the locating pin 19 locks the base 9 and this part in the circumferential position at the hole location; as shown in the F-direction view. The hole is used to install the locating pin 21; the Φ120** reference circle shown is precisely fitted with the Φ120** reference circle of the locating plate 20, with a gap of 0.005~0.01.

[0046] In one embodiment, refer to Figure 13 As shown, the positioning plate 20 is a stepped shaft / hole shape formed by cutting away material from a cylinder, and has spaces such as annular grooves, annular slots, threaded holes, and large / small through holes; as shown in the figure. The dimensional part is an annular groove, which corresponds to the rotating ring 18F in the view. Corresponding to the hole, use the locating pin 21 to pass through the rotating ring 18F towards the view. After the hole, it extends into the annular groove, which serves to axially limit the overall positioning plate; the two M12 threaded holes shown are for screwing in two handles 17, with the edges firmly welded, and are fixed as one piece with the handles 17; the Φ40** part shown is precisely fitted with the Φ40* part of the tapered shaft section 161, with a clearance of 0.005~0.01; the Φ177.75* part shown is an annular groove, and it is connected to the housing 1. The parts are precisely fitted with a clearance of 0.005 to 0.01. The Φ120** part shown is precisely fitted with the Φ120** reference circle of the rotating ring 18 with a clearance of 0.005 to 0.01. In the top view shown, the areas where the four M10s are located have four evenly distributed grooves for installing special-shaped screws 23 and support plates 24 (four of each).

[0047] In one embodiment, refer to Figure 14 As shown, the special-shaped screw 23 has a convex spherical head compared to the conventional screw, and is otherwise unremarkable. The special-shaped screw 23 is installed in the area where M10 is located at the four positions on the positioning plate 20, and the spherical head is inserted into the concave spherical surface of the support plate 24. Rotating the special-shaped screw 23 can lift the housing 1.

[0048] In one embodiment, refer to Figure 15 As shown, the support plate 24 is installed in the four grooves in the four areas where M10 is located on the positioning plate 20. Its concave spherical surface matches the convex spherical surface of the head of the special-shaped screw 23. When the special-shaped screw 23 is rotated, force is applied to this part, which can lift the housing 1. The part shown is firmly attached to the top with a rubber pad to avoid damaging the workpiece (the contact part of the housing 1).

[0049] Reference Figures 16-23 This is a schematic diagram illustrating the assembly relationship and installation process between the various components of the present invention. The fixture assembly steps are as follows: Step 1: Install handle 17 onto positioning plate 20 and weld it in place (see...) Figure 16 ); Step 2: Assemble the rotating ring 18 and use the locating pin 21 for positioning (see...). Figure 17 ); Step 3: Assemble the special-shaped screw 23 and the support plate 24 (see...) Figure 18 ); Step 4: Assemble base 9, limit it with locating pin 19, and tighten it with hex socket screw 22 (see...) Figure 19 ); Step 5: Assemble the vertical support rod 10 and tighten it with hex socket screws 11 (see...) Figure 20 ); Step 6: Assemble the horizontal support rod 12 and the first adjusting block 13, and tighten them with two Allen screws 25 (see...). Figure 21 The two set screws are 253 and 252 respectively; the horizontal support rod 12 is tightened with 253, and the first adjusting block 13 is tightened with 252.

[0050] After assembly, the horizontal support rod 12 and the first adjusting block 13 can be adjusted by loosening or tightening the set screw.

[0051] Step 7: Assemble the cantilever support rod 14 and the second adjusting block 15, and tighten them with two hex socket head cap screws 25 (see...). Figure 22 The two set screws are 255 and 251 respectively; the cantilever support 14 is tightened with 255, and the second adjusting block 15 is tightened with 251. After assembly, the cantilever support 14 and the second adjusting block 15 can be adjusted by loosening / tightening the set screws.

[0052] Step 8: Assemble the positioning shaft assembly 16 by threading the two parts 16 / 1 and 16 / 2 together (see...). Figure 23 ).

[0053] At this time, under the support of the rotating ring 18 and the limiting action of the positioning pin 21, the rotating handle 17 and the parts mounted on the positioning plate 20 can rotate together in the direction of the arrow. When installing, applying a layer of grease to the Φ120** part of the rotating ring 18 and the positioning plate 20 can make the rotation very flexible and easier to operate.

[0054] Reference Figure 24 The diagram shown illustrates the positional relationship and adjustment functions of the testing mechanism.

[0055] In one embodiment, refer to Figures 25-30 As shown, a method for assembling and calibrating a spoke-type bearing housing based on a spoke-type bearing housing assembly and calibration fixture is described, with the following specific steps: Step 1: Install housing 1 into the fixture (see...) Figure 25 ); Step 2: Place the bearing bushing 2 in the center of the clamp inside the housing 1 (see...) Figure 26); Third step: put the locating shaft assembly 16 into the center of the bearing bush 2 (see Figure 27 ); Fourth step: install the washer 3 and the spoke 4 under the locating action of the locating shaft assembly 16 (see Figure 28 ); The positioning plate 20 can be rotated by means of the handle 17, and the whole workpiece (the shell 1, the bearing bush 2, the washer 3 and the spoke 4) can be rotated.

[0056] Fifth step: clamp the dial gauge 7 in the blind hole below the cantilever strut 14, fasten it with the piece 254-internal hexagonal screw, and adjust the detection mechanism (pieces 251, 252, 253, 255, 12, 13, 14, 15) to make the dial gauge extend into the inner cavity of the shell 1, and make the contact position of the dial gauge abut against the upper and lower inner circular positions of the bearing bush 2 respectively. The whole workpiece (the shell 1, the bearing bush 2, the washer 3 and the spoke 4) can be rotated by means of rotating the positioning plate 20 with the handle 17, and the run-out value of the contact position inner circle can be measured (see Figure 29 ).

[0057] Sixth step: after the run-out value detection of the upper and lower inner circular positions of the bearing bush 2 is qualified, loosen the piece 254-internal hexagonal screw, remove the dial gauge 7, adjust the other internal hexagonal screws 25 of the detection mechanism, move away the struts and adjusting blocks such as pieces 12, 13, 14, 15, leave out the upper space, and take away the whole workpiece (the shell 1, the bearing bush 2, the washer 3 and the spoke 4). The whole workpiece can be taken away from the fixture by rotating the special-shaped screw 23 to make the support plate 24 go up (see Figure 30 ).

[0058] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments without departing from the principles and purposes of the present application within the scope of the present application.

Claims

1. A spoke-type bearing housing assembly and alignment fixture, wherein the spoke-type bearing housing comprises a housing (1), a bearing bushing (2), and a plurality of spokes (4) circumferentially connected between the two; characterized in that, The clamp includes: Assembly mechanism: includes a base (9), a positioning plate (20) rotatably mounted on the base, a handle (17) for driving the positioning plate to rotate, and a support plate (24) and special screws (23) for lifting the housing; wherein, the upper surface of the positioning plate is precisely fitted with the outer stop of the housing (1) through an annular groove to establish a positioning reference; Testing mechanism: includes a three-dimensional adjustable support rod assembly, an adjustment block and a dial indicator (7), wherein the support rod assembly achieves fine adjustment of spatial position through the adjustment block; Positioning shaft assembly (16): Coaxially mounted in the center hole of the positioning plate (20) and passing through the inner hole of the bearing bushing, serving as a direct measurement reference.

2. The spoke-type bearing housing assembly and alignment fixture according to claim 1, characterized in that: The positioning plate (20) is a stepped shaft structure, consisting of a rotating shaft, a shoulder, and a positioning shaft in sequence along the axial direction; the rotating shaft is rotatably connected to the base (9); an annular groove is opened on the end face of the shoulder, and the outer ring surface and the bottom surface of the annular groove serve as the mounting reference surface of the outer stop of the housing; the positioning shaft has a central hole, which cooperates with the positioning shaft assembly (16) as the mounting reference of the bearing bushing; Among them, multiple grooves are evenly distributed around the outer edge of the upper end face of the shoulder, and threaded through holes are opened at the bottom of the grooves for installing the support plate (24) and the special screw (23). The axial height of the support plate (24) is adjusted by turning the special screw (23), and then the axial thrust is applied to the shoulder at the outer edge of the housing stop to complete the lifting of the housing.

3. The spoke-type bearing housing assembly and alignment fixture according to claim 2, characterized in that: The positioning shaft assembly (16) includes a coaxially nested tapered shaft segment (161) and a threaded shaft segment (162); the small diameter end of the tapered shaft segment (161) is coaxially and precisely fitted with the center hole of the positioning plate (20), with an installation gap of 0.005 to 0.01, and its shoulder is clearance fitted with the inner hole of the bearing bushing; the bottom of the threaded shaft segment (162) is threadedly connected to the top of the tapered shaft segment (161), and its top extends axially to the outside of the housing.

4. The spoke-type bearing housing assembly and alignment fixture according to claim 3, characterized in that: The positioning plate (20) of the assembly mechanism is limited to rotation by a rotating ring (18). The rotating ring (18) is a circular ring structure installed on the base (9) by a positioning pin and screws, and its ring wall has a radial through hole. The rotating shaft of the positioning plate (20) is coaxially installed in the inner hole of the rotating ring, and the two are fitted with a clearance to form a rotating pair. The outer circumferential surface of the rotating shaft has an annular groove opposite to the radial through hole. After the positioning plate is rotated into place, the positioning plate is positioned by the positioning pin inserted into the annular groove through the radial through hole.

5. The spoke-type bearing housing assembly and alignment fixture according to claim 1, characterized in that: The support rod assembly of the detection mechanism includes: A vertical support rod (10) is fixed on the base (9), and its axis is perpendicular to the mounting end face of the base; The horizontal support rod (12) is vertically connected to the vertical support rod (10) through the first adjusting block (13) to realize the adjustment of height and horizontal position; The cantilever support rod (14) is vertically connected to the horizontal support rod (12) through the second adjusting block (15) to realize the lifting and tilting of the dial indicator (7).

6. The spoke-type bearing housing assembly and alignment fixture according to claim 5, characterized in that: The cantilever support rod (14) has a blind hole at its end for holding a dial indicator (7) and locking it with an internal hex screw (254). Its axis is parallel to the reference axis of the positioning shaft assembly (16).

7. A method for assembling and calibrating a spoked bearing housing based on a spoked bearing housing assembly and calibration fixture, characterized in that, The specific steps include: Step S1: Place the housing (1) on the positioning plate (20) of the fixture, and establish a reference by fitting the annular groove on the positioning plate (20) with the outer stop of the housing; Step S2: The bearing bushing (2) is placed on the positioning plate positioning shaft in the inner cavity of the housing, and the positioning shaft assembly (16) passes through its inner hole to achieve automatic centering; Step S3: Rotate the positioning plate (20) by the handle (17) to install the washer (3) and spoke (4) to the threaded hole of the bearing bushing in sequence; Step S4: Adjust the testing mechanism so that the dial indicator (7) touches the inner hole of the bearing bushing, rotate the positioning plate (20) to drive the spoke bearing chamber to rotate as a whole, and adjust the tightness of each spoke simultaneously until the runout value is ≤ Φ0.01mm.

8. The method for assembling and calibrating the spoke-type bearing housing according to claim 7, characterized in that: In step S4, the runout detection of the inner holes at the upper and lower ends of the bearing bushing is completed in a single clamping operation: First, inspect the lower end inner hole and adjust the lower group of 12 spokes; Further improve the dial indicator contact to detect the inner hole at the top, and adjust the 12 spokes of the upper group.

9. The method for assembling and calibrating the spoke-type bearing housing according to claim 7, characterized in that: The spoke tightness is adjusted using a diagonal progressive tightening method: when excessive runout is detected, the spoke at the excessive point is loosened and its diagonal spoke is tightened.

10. The method for assembling and calibrating the spoke-type bearing housing according to claim 7, characterized in that: After the runout test is completed, rotate the special-shaped screw (23) to drive the support plate (24) to lift the workpiece and remove it from the fixture for potting.

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