Diaphragm coupling, bounce detection method of diaphragm coupling and processing method of diaphragm coupling

Abstract

The invention discloses a diaphragm coupling, a diaphragm coupling run-out detection method and a diaphragm coupling processing method, and belongs to the field of couplings, a fastening assembly comprises a diaphragm, a shaft sleeve and a bolt, the diaphragm and the shaft sleeve are coaxially arranged, the diaphragm is provided with a through hole, the shaft sleeve is provided with a shaft hole penetrating through a second connecting part and a second sleeving part, and the shaft hole is matched with an equipment shaft. The second sleeving part tightly holds the equipment shaft, the second connecting part is provided with a threaded hole, the axis of the threaded hole is parallel to the axis of the shaft hole, the outer wall of the second connecting part has a complete circumference to form a run-out detection part, the bolt penetrates through the through hole of the diaphragm and is matched with the threaded hole of the shaft sleeve, and a nut is not needed, so that the outer wall of the second connecting part does not need to be provided with an avoiding groove. A complete circumference can exist, so that a run-out detection part can be formed on the outer wall of the second connecting part, and after the diaphragm coupling is assembled, run-out detection can be performed through the run-out detection part, so that the coaxiality of the coupling and an equipment shaft after installation is ensured, and the detection is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of couplings, in particular to a diaphragm coupling, a diaphragm coupling runout detection method and a diaphragm coupling processing method. Background Art

[0002] Carbon fiber long rod couplings are used for large processing machinery, especially the z-axis (equipment spindle) transmission of gantry machine tools. As the speed requirements for gantry machine tools are getting higher and higher, the requirements for fiber tube couplings from major machine tool manufacturers are gradually increasing, and at the same time, requirements are also being put forward for the accuracy of the coupling itself and the installation accuracy.

[0003] The existing carbon fiber long rod coupling uses the inner hole for accuracy detection, which can be performed before installation. However, during the installation process, large lifting equipment is required to first place the fiber shaft vertically, and then lock and install it at both ends. After the installation is completed, the installation eccentricity between the coupling and the equipment shaft needs to be calibrated. Workers cannot accurately judge whether the installation accuracy meets the requirements, and need to combine the vibration detection of the coupling at both ends to determine the installation accuracy.

[0004] However, the diaphragm installation of the existing diaphragm coupling needs to be fixed with bolts and nuts, so the sleeve needs to be designed with grooves to avoid the fasteners, resulting in an incomplete outer circle of the coupling sleeve, and therefore, the runout detection cannot be completed at the outer circle.

[0005] In addition, the sleeve and shaft hole are processed in batches and have no reference capability. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a diaphragm coupling with a complete outer circumference of a sleeve capable of performing runout detection after installation.

[0007] In order to overcome the deficiencies of the prior art, a second object of the present invention is to provide a method for detecting the runout of a diaphragm coupling which can perform the runout detection after installation to determine the installation accuracy.

[0008] In order to overcome the deficiencies of the prior art, a third object of the present invention is to provide a method for processing a diaphragm coupling that can perform runout detection after installation to determine installation accuracy.

[0009] One of the purposes of the present invention is achieved by the following technical solution:

[0010] A diaphragm coupling comprises a spacer and a fastening assembly installed at both ends of the spacer, the fastening assembly comprises a diaphragm and a sleeve, the diaphragm and the sleeve are coaxially arranged, the diaphragm is provided with a through hole, the sleeve comprises a second connecting portion and a second sleeve portion extending from the second connecting portion, the sleeve is provided with an axial hole passing through the second connecting portion and the second sleeve portion, the axial hole cooperates with the equipment shaft, the second sleeve portion tightly embraces the equipment shaft, the second connecting portion is provided with a threaded hole, the axis of the threaded hole is parallel to the axis of the axial hole, the outer wall of the second connecting portion has a complete circumference to form a beat detection portion, the fastening assembly also comprises a bolt, the bolt is passed through the through hole of the diaphragm and cooperates with the threaded hole of the sleeve.

[0011] Furthermore, the vibration detection portion is in a circular ring shape, and the vibration detection portion is coaxial with the axial hole.

[0012] Furthermore, the width of the vibration detection portion is greater than or equal to 1 mm.

[0013] Furthermore, an outer wall of the second connecting portion is provided with a tool retreat groove, and the tool retreat groove separates the outer wall of the second connecting portion into the vibration detection portion and the clamping portion.

[0014] Furthermore, the sum of the width of the tool retreat groove and the width of the clamping portion is greater than or equal to 4 mm.

[0015] Furthermore, the plane where the tool retreat groove is located is perpendicular to the axis of the shaft hole.

[0016] Furthermore, the fastening assembly also includes a shaft ring, which is coaxially arranged with the diaphragm and the sleeve, the diaphragm is located between the shaft ring and the sleeve, the shaft ring is provided with a threaded hole, and some of the bolts are passed through the through hole of the diaphragm and cooperate with the threaded hole of the shaft ring.

[0017] The second object of the present invention is achieved by adopting the following technical solution:

[0018] A method for detecting vibration of a diaphragm coupling is implemented by any of the above-mentioned diaphragm couplings, comprising the following steps:

[0019] Before installing the diaphragm coupling, a runout test is performed on the shaft hole of the shaft sleeve to detect the assembly accuracy of the diaphragm coupling;

[0020] The two fastening components are respectively connected and tightly held with the shaft sleeves of the two devices, and the spacer is placed vertically by hoisting equipment, and then the two fastening components are locked with the two ends of the spacer to complete the installation of the diaphragm coupling;

[0021] After installation, the outer wall of the sleeve of the diaphragm coupling has a complete circumference, and the complete circumference forms a runout detection part. A secondary runout detection is performed on the runout detection part to detect the installation accuracy.

[0022] Furthermore, the vibration detection unit is arranged on a sleeve at the lower end of the diaphragm coupling.

[0023] The third object of the present invention is achieved by adopting the following technical solution:

[0024] A method for processing a diaphragm coupling, used for processing any of the above-mentioned diaphragm couplings, comprises the following steps:

[0025] Processing a back cutter groove on the outer wall of the second connecting portion of the sleeve;

[0026] The tool-relief groove and the clamping portion of the sleeve are clamped to simultaneously process the run-out detection portion and the shaft hole, so that the processing datums of the run-out detection portion and the shaft hole are the same.

[0027] The diaphragm coupling of the present application is provided with a threaded hole on the sleeve so that no nut is required when the diaphragm and the sleeve are fixed by bolts. Therefore, the outer wall of the second connecting part of the sleeve does not need to be provided with a avoidance groove, and a complete circumference can exist. Therefore, a vibration detection part is formed on the outer wall of the second connecting part. When the diaphragm coupling is assembled, the vibration detection part can be used to perform vibration detection, thereby ensuring the coaxiality of the coupling and the equipment shaft after installation, and the detection is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a stereoscopic diagram of a diaphragm coupling of the present invention;

[0029] Figure 2 for Figure 1 A three-dimensional view of a fastening assembly of a diaphragm coupling;

[0030] Figure 3 for Figure 2 An exploded view of the fastening assembly;

[0031] Figure 4 for Figure 3 A three-dimensional view of the shaft end flange of the fastening assembly;

[0032] Figure 5 for Figure 3 A perspective view of a collar of a fastening assembly;

[0033] Figure 6 for Figure 3 A three-dimensional view of a diaphragm of a fastening assembly;

[0034] Figure 7 for Figure 3 A three-dimensional view of a sleeve of a fastening assembly;

[0035] Figure 8 for Figure 7 Another stereoscopic view of the sleeve;

[0036] Fig. 9 for Figure 7 A three-dimensional cross-sectional view of a sleeve;

[0037] Fig.10 for Fig. 9 An enlarged view of the shaft sleeve A;

[0038] Fig.11 for Figure 3 A three-dimensional view of an outer ring of a fastening assembly;

[0039] Fig.12 for Figure 2 A three-dimensional cross-sectional view of a fastening assembly;

[0040] Fig.13 for Figure 2 Another perspective cross-sectional view of the fastening assembly.

[0041] In the figure: 10, spacer; 20, fastening assembly; 21, shaft end flange; 211, first connecting portion; 2110, first through hole; 212, first sleeve portion; 22, shaft collar; 220, first avoidance hole; 221, first threaded hole; 222, second threaded hole; 23, first bolt; 24, diaphragm; 240, second through hole; 241, third through hole; 25, second bolt; 251, first gasket; 252, second gasket; 253, third gasket; 254, fourth gasket ; 26, bushing; 260, second connecting portion; 2601, second avoidance hole; 26011, through hole; 26012, receiving portion; 2602, third threaded hole; 2603, fourth threaded hole; 2604, tool withdrawal groove; 2605, runout detection portion; 2606, clamping portion; 261, second sleeve portion; 262, axial hole; 27, third bolt; 28, outer ring; 280, third connecting portion; 2801, fourth through hole; 281, third sleeve portion; 29, fourth bolt. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] like Figure 1 As shown, the diaphragm coupling of the present invention is used to connect two equipment shafts. The diaphragm coupling includes a spacer 10 and fastening components 20 installed at both ends of the spacer 10. The two fastening components 20 are coaxially arranged with the spacer 10.

[0046] Please continue reading Figure 2 as well as Figure 3 Each fastening assembly 20 includes a shaft end flange 21, a shaft collar 22, a diaphragm 24, a shaft sleeve 26, an outer ring 28, bolts and a gasket. The flange 21, the shaft collar 22, the diaphragm 24, the shaft sleeve 26 and the outer ring 28 are coaxially arranged in sequence.

[0047] The flange 21 and the shaft ring 22 are connected by bolts, threads and thread lubricant, the shaft ring 22 and the diaphragm 24 are connected by bolts, threads and thread lubricant, the diaphragm 24 and the sleeve 26 are connected by bolts, threads and thread lubricant, and the sleeve 26 and the outer ring 28 are connected by bolts, threads and thread lubricant.

[0048] Specifically, the bolts include a first bolt 23, a second bolt 25, a third bolt 27 and a fourth bolt 29. The first bolt 23 is used to connect the flange 21 and the shaft ring 22, the second bolt 25 is used to connect the diaphragm 24 and the sleeve 26, the third bolt 27 is used to connect the shaft ring 22 and the diaphragm 24, and the fourth bolt 29 is used to connect the sleeve 26 and the outer ring 28.

[0049] The gasket includes a first gasket 251, a second gasket 252, a second gasket 253 and a fourth gasket 254. The first gasket 251, the second gasket 252, the second gasket 253 and the fourth gasket 254 are respectively located on both sides of the diaphragm 24 to increase the contact area between the diaphragm 24 and the shaft ring 22 and the shaft sleeve 26, reduce pressure, prevent loosening, and protect the diaphragm 24 and the bolts.

[0050] Please continue reading Figure 4 The shaft end flange 21 includes a first connection portion 211 and a first sleeve portion 212 extending from the first connection portion 211. The first connection portion 211 is fixed to the collar 22, and the first sleeve portion 212 is interference fit with the end of the spacer 10. The first connection portion 211 is provided with a first through hole 2110, and the first through hole 2110 is used to install the first bolt 23. There are multiple first through holes 2110, and the multiple first through holes 2110 are evenly spaced and located on a circumference, so that the locking force between the shaft end flange 21 and the collar 22 is evenly distributed.

[0051] Please continue reading Figure 5 The collar 22 is provided with a first avoidance hole 220, a first threaded hole 221 and a second threaded hole 222. The first avoidance hole 220 is used to accommodate the nut of the second bolt 25. Thread lubricant is applied to the first threaded hole 221 and the second threaded hole 222 to enhance the locking force. The first threaded hole 221 is used to cooperate with the first bolt 23 to achieve the locking of the shaft end flange 21 and the collar 22, and the second threaded hole 222 is used to cooperate with the third bolt 27 to achieve the locking of the diaphragm 24 and the collar 22.

[0052] Please continue reading Figure 6 The diaphragm 24 is provided with through holes for installing the second bolt 25 and the third bolt 27. Specifically, the through holes include a second through hole 240 and a third through hole 241. The second through hole 240 and the third through hole 241 are both multiple in number and are arranged at intervals. The second through hole 240 is used to install the second bolt 25, and the third through hole 241 is used to install the third bolt 27.

[0053] Please continue reading Figure 7 , Figure 8 , Fig. 9 as well as Fig.10 The sleeve 26 includes a second connection portion 260 and a second sleeve portion 261 extending from the second connection portion 260. The second connection portion 260 is fixed to the diaphragm 24 and the diaphragm 30, and the second sleeve portion 261 is sleeved with the outer ring 28. The sleeve 26 is provided with an axial hole 262, which passes through the second connection portion 260 and the second sleeve portion 261. The axial hole 262 is used to install the device shaft, and the second sleeve portion 261 holds the device shaft tightly to generate a clamping force on the device shaft.

[0054] The second connection portion 260 is provided with a second avoidance hole 2601, a third threaded hole 2602 and a fourth threaded hole 2603, and thread lubricant is applied to the third threaded hole 2602 and the fourth threaded hole 2603. The second avoidance hole 2601 is used to receive the nut of the third bolt 27, the third threaded hole 2602 cooperates with the second bolt 25, and the fourth threaded hole 2603 cooperates with the external thread of the fourth bolt 29. The axes of the third threaded hole 2602 and the fourth threaded hole 2603 are parallel to the axis of the shaft hole 262.

[0055] Since the second avoidance hole 2601, the third threaded hole 2602 and the fourth threaded hole 2603 are all arranged between the outer edge and the inner edge of the second connecting portion 260, and the outer wall of the second connecting portion 260 is a complete circumference, a beating detection portion 2605 is formed on the outer wall of the second connecting portion 260. The beating detection portion 2605 is in a circular ring shape and is coaxial with the shaft hole 262. Since the beating detection portion 2605 and the shaft hole 262 are on the same part sleeve 26, and the beating detection portion 2605 and the shaft hole 262 are coaxial, the beating detection portion 2605 can be used as a beating detection area.

[0056] The width of the beating detection part 2605 is greater than or equal to 1 mm. When the width of the beating detection part 2605 is less than 1 mm, there is a greater risk of failure of the detection surface, which will cause detection errors. Therefore, the width of the beating detection part 2605 is greater than or equal to 1 mm to make the detection result accurate.

[0057] In order to ensure that the detection result of the runout detection part 2605 is accurate, the runout detection part 2605 needs to be processed simultaneously with the shaft hole 262 so that the datum is the same during processing. During processing, it is necessary to cooperate with a specific fixture to stably clamp the second connecting part 260, so a clamping width is reserved on one side of the outer circle of the second connecting part 260 to form a clamping part 2606. Specifically, a side with a circular end face that is more convenient for clamping is selected for clamping. Clamping thickness requirement: more than 4mm, that is, the sum of the width of the backing groove 2604 and the width of the clamping part 2606 is greater than or equal to 4mm. The setting of the clamping part 2606 facilitates the simultaneous processing of the runout detection part 2605 and the shaft hole 262 to ensure the consistency and accuracy of the datum. Make full use of the space on the outer circumference to facilitate the subsequent reuse of other areas, for example, additional dynamic balancing holes or other matching structures are set.

[0058] The outer wall of the second connecting portion 260 is provided with a tool-relief groove 2604, which divides the outer wall of the second connecting portion 260 into a runout detection portion 2605 and a clamping portion 2606. The setting of the tool-relief groove 2604 enables the runout detection portion 2605 and the clamping portion 2606 to be processed separately, removing burrs and other outer circle defects caused by processing, and avoiding affecting the clamping reference during the processing. The plane where the tool-relief groove 2604 is located is perpendicular to the axis of the shaft hole 262.

[0059] Please continue reading Fig.11 The outer ring 28 includes a third connecting portion 280 and a third sleeve portion 281, and the third sleeve portion 281 extends from the third connecting portion 280. The third connecting portion 280 is fixed to the sleeve 26, and the third sleeve portion 281 is sleeved on the second sleeve portion 261. The third connecting portion 280 is provided with a fourth through hole 2801, and the fourth through hole 2801 is used to install the fourth bolt 29. The number of the fourth through holes 2801 is multiple, and the multiple fourth through holes 2801 are evenly spaced and located on a circle, so that the locking force between the outer ring 28 and the sleeve 26 is uniform.

[0060] Please continue reading Fig.12 as well as Fig.13 When assembling the diaphragm coupling, the first sleeve portion 212 of the shaft end flange 21 is interference fit with the spacer 10. The first bolt 23 passes through the first through hole 2110 and cooperates with the first threaded hole 221 coated with thread lubricant to fix the shaft end flange 21 and the shaft collar 22. The third bolt 27 passes through the third through hole 241 of the diaphragm 24 and cooperates with the second threaded hole 222 coated with thread lubricant to fix the shaft collar 22 and the diaphragm 24. The second bolt 25 passes through the second through hole 240 of the diaphragm 24 and cooperates with the third threaded hole 2602 coated with thread lubricant to fix the diaphragm 24 and the shaft sleeve. The fourth bolt 29 passes through the fourth through hole 2801 and cooperates with the fourth threaded hole 2603 coated with thread lubricant to fix the outer ring 28 and the shaft sleeve 26.

[0061] When using the diaphragm coupling, before installing the diaphragm coupling, a runout test is performed on the shaft hole 262 of the sleeve 26 to detect the assembly accuracy of the diaphragm coupling; the two fastening components 20 are respectively connected and tightly held with the two equipment sleeves, and the spacer 10 is placed vertically using a lifting device, and then the two fastening components 20 and the two ends of the spacer 10 are locked to complete the installation of the diaphragm coupling; the outer wall of the sleeve 26 of the installed diaphragm coupling has a complete circumference, and the complete circumference forms a runout detection part 2605, and the runout detection part 2605 is subjected to a secondary runout test to detect the installation accuracy. The runout detection part 2605 is set on the sleeve 26 at the lower end of the diaphragm coupling, so it is more convenient for on-site detection of long structures.

[0062] The present application also discloses a diaphragm coupling runout detection method, which is implemented by any of the above diaphragm couplings and includes the following steps:

[0063] Before installing the diaphragm coupling, a runout test is performed on the shaft hole 262 of the shaft sleeve 26 to detect the assembly accuracy of the diaphragm coupling;

[0064] The two fastening components 20 are respectively connected and tightly held with the two equipment shaft sleeves, and the spacer 10 is placed vertically using a lifting device, and then the two fastening components 20 and the two ends of the spacer 10 are locked to complete the installation of the diaphragm coupling;

[0065] After installation, the outer wall of the sleeve 26 of the diaphragm coupling has a complete circumference, which forms a runout detection portion 2605. The runout detection portion 2605 is subjected to a secondary runout detection to detect the installation accuracy. The runout detection portion 2605 is arranged on the sleeve 26 at the lower end of the diaphragm coupling, so it is more convenient for on-site detection of long structures.

[0066] The present application also discloses a method for processing a diaphragm coupling, which is used for processing the diaphragm coupling, and comprises the following steps:

[0067] A backing groove 2604 is machined on the outer wall of the second connecting portion 260 of the sleeve 26;

[0068] The back cut groove 2604 and the clamping portion 2606 of the clamping sleeve 26 are used to simultaneously process the runout detection portion 2605 and the shaft hole 262, so that the processing references of the runout detection portion 2605 and the shaft hole 262 are the same.

[0069] The diaphragm coupling of the present application is provided with a threaded hole on the sleeve 26 so that no nut is required when the diaphragm 24 and the sleeve 26 are fixed by bolts. Therefore, the outer wall of the second connecting part 260 of the sleeve 26 does not need to be provided with a avoidance groove, and a complete circumference can exist. Therefore, a runout detection part 2605 is formed on the outer wall of the second connecting part 260. When the diaphragm coupling is assembled, the runout detection part 2605 can be used to perform a runout detection, thereby ensuring the coaxiality of the coupling and the equipment shaft after installation, and the detection is convenient.

[0070] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A diaphragm coupling, comprising a spacer and fastening components mounted on both ends of the spacer, wherein the fastening components comprise a diaphragm and a sleeve, wherein the diaphragm and the sleeve are coaxially arranged, and characterized in that: The diaphragm is provided with a through hole, the sleeve includes a second connecting portion and a second sleeve portion extending from the second connecting portion, the sleeve is provided with an axial hole that passes through the second connecting portion and the second sleeve portion, the axial hole cooperates with the device shaft, the second sleeve portion tightly embraces the device shaft, the second connecting portion is provided with a threaded hole, the axis of the threaded hole is parallel to the axis of the axial hole, the outer wall of the second connecting portion has a complete circumference to form a beat detection portion, and the fastening assembly also includes a bolt, the bolt is passed through the through hole of the diaphragm and cooperates with the threaded hole of the sleeve.

2. The diaphragm coupling according to claim 1, characterized in that: The vibration detection part is in a circular ring shape and is coaxial with the axial hole.

3. The diaphragm coupling according to claim 2, characterized in that: The width of the vibration detection portion is greater than or equal to 1 mm.

4. The diaphragm coupling according to claim 2, characterized in that: The outer wall of the second connecting portion is provided with a tool retreat groove, and the tool retreat groove separates the outer wall of the second connecting portion into the vibration detection portion and the clamping portion.

5. The diaphragm coupling according to claim 4, characterized in that: The sum of the width of the tool retreat groove and the width of the clamping portion is greater than or equal to 4 mm.

6. The diaphragm coupling according to claim 4, characterized in that: The plane where the tool retreat groove is located is perpendicular to the axis of the shaft hole.

7. The diaphragm coupling according to claim 1, characterized in that: The fastening assembly also includes a shaft ring, which is coaxially arranged with the diaphragm and the sleeve. The diaphragm is located between the shaft ring and the sleeve. The shaft ring is provided with a threaded hole. Some of the bolts are passed through the through holes of the diaphragm and cooperate with the threaded holes of the shaft ring.

8. A method for detecting vibration of a diaphragm coupling, implemented by the diaphragm coupling according to any one of claims 1 to 7, characterized in that: The following steps are involved: Before installing the diaphragm coupling, a runout test is performed on the shaft hole of the shaft sleeve to detect the assembly accuracy of the diaphragm coupling; The two fastening components are respectively connected and tightly held with the shaft sleeves of the two devices, and the spacer is placed vertically by hoisting equipment, and then the two fastening components are locked with the two ends of the spacer to complete the installation of the diaphragm coupling; After installation, the outer wall of the sleeve of the diaphragm coupling has a complete circumference, and the complete circumference forms a runout detection part. A secondary runout detection is performed on the runout detection part to detect the installation accuracy.

9. The diaphragm coupling runout detection method according to claim 8, characterized in that: The vibration detection unit is arranged on the shaft sleeve at the lower end of the diaphragm coupling.

10. A method for processing a diaphragm coupling, used for processing the diaphragm coupling according to any one of claims 1 to 7, characterized in that: The following steps are involved: Processing a back cutter groove on the outer wall of the second connecting portion of the sleeve; The tool-relief groove and the clamping portion of the sleeve are clamped to simultaneously process the run-out detection portion and the shaft hole, so that the processing datums of the run-out detection portion and the shaft hole are the same.

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