Positioning clamp and motor wire end clamping device
By using a nested quick-connect structure of the adapter and clamping components, combined with the linear drive component and the linkage assembly, the problems of insufficient adaptability and clamping force of the positioning fixture in the prior art are solved, and efficient and low-cost motor stator wire end clamping is achieved.
Patent Information
- Application Number
- CN202422984241.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing technology requires multiple clamping discs and manual operation when positioning and holding the flat copper wire ends of the motor stator, resulting in high equipment and labor costs. Furthermore, the accompanying tooling is easily damaged, affecting the welding effect.
It adopts a nested quick-connect structure of adapter and clamping components, combined with linear drive components and linkage components, to achieve quick replacement of clamping components and large clamping force, adapting to motor stators of different diameters.
It improves the adaptability and clamping force of the positioning fixture, reduces equipment and labor costs, minimizes fixture damage, and ensures welding results.
Smart Images
Figure CN223629772U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric machines, in particular to a positioning clamp and an electric machine wire end clamping device. BACKGROUND
[0002] In the prior art, when positioning and clamping the wire end of the stator flat copper wire of an electric machine, a traveling clamp tool is usually used. In order to ensure continuous production, usually more than ten sets of clamping discs need to be made, and two manual workstations are needed for manual disassembly and assembly or automatic disassembly and assembly equipment is needed. The equipment cost and labor cost are both high, and due to the self-weight requirement of the traveling tool, it cannot be strong enough, so it is easy to be damaged, thereby affecting the welding effect. CONTENT OF THE UTILITY MODEL
[0003] The present application provides a positioning clamp and an electric machine wire end clamping device to improve the applicability of the positioning clamp.
[0004] In a first aspect, a positioning clamp is provided, comprising a support seat, an adapter assembly and a clamping assembly, wherein,
[0005] The adapter assembly comprises a first adapter ring and a second adapter ring coaxially arranged, and the first adapter ring and the second adapter ring are respectively rotatably connected with the support seat;
[0006] The clamping assembly comprises a first positioning disc nested in the first adapter ring and circumferentially limited, and a second positioning disc nested in the second adapter ring and circumferentially limited, wherein the first positioning disc and the second positioning disc are provided with a clamping groove for clamping the wire end, and when the first positioning disc and the second positioning disc are relatively rotated by a set angle, the clamping groove clamps the wire end;
[0007] The positioning clamp further comprises a driving mechanism, the driving mechanism comprising a linear driving component, and a connecting rod assembly connected with the linear driving component, the number of the connecting rod assemblies being two, and the two connecting rod assemblies are respectively connected with the first adapter ring and the second adapter ring one by one.
[0008] In the above technical solution, the adapter assembly is used as the structure of supporting the clamping assembly, and the clamping assembly and the adapter assembly adopt the quick connection mode of nesting, so that the clamping assembly can be easily replaced. When clamping the wire end of the electric machine stator with different diameters, the matching clamping assembly can be quickly replaced, thereby improving the adaptability of the positioning clamp. In addition, the driving mechanism composed of the linear driving component and the connecting rod assembly drives the two positioning discs in the clamping assembly to rotate relatively to clamp the wire end, which can provide a larger clamping force.
[0009] In one specific implementation, the first adapter ring is provided with a plurality of first limiting notches, which are arranged at intervals around the axis of the first adapter ring; the first positioning disc is provided with a first limiting protrusion matched with each first limiting notch;
[0010] The second adapter ring is provided with a plurality of second limiting notches, which are arranged at intervals around the axis of the second adapter ring; the second positioning disc is provided with a second limiting protrusion matched with each second limiting notch.
[0011] In one specific implementation, along the insertion direction of the wire end, the first positioning disc is located downstream of the second positioning disc and limits the axial movement of the second positioning disc;
[0012] The positioning clamp further comprises a limiting ring, which abuts against the first positioning disc and limits the axial movement of the first positioning disc.
[0013] In one specific implementation, it further comprises a first cross-roller bearing and a second cross-roller bearing; wherein,
[0014] The first adapter ring is rotationally connected with the support seat through the first cross-roller bearing;
[0015] The second adapter ring is rotationally connected with the support seat through the second cross-roller bearing.
[0016] In one specific implementation, it further comprises a limiting seat, which is fixedly connected with the inner ring of the first cross-roller bearing, and has a clamping groove; the limiting ring is clamped in the clamping groove and abuts against the first positioning disc; wherein,
[0017] The limiting seat has an assembly notch, and the limiting ring is provided with a third limiting protrusion matched with the assembly notch; when the limiting ring is rotated to a first specified position, the third limiting protrusion is clamped in the clamping groove.
[0018] In one specific implementation, the outer ring of the second cross-roller bearing is fixedly connected with the support seat, and the inner ring of the second cross-roller bearing is fixedly connected with the second adapter ring and the corresponding connecting rod assembly, respectively;
[0019] The outer ring of the first cross-roller bearing is fixedly connected with the support seat, and the inner ring of the first cross-roller bearing and the corresponding connecting rod assembly are fixedly connected, respectively.
[0020] In one specific implementation, the linkage assembly includes a first connecting rod rotationally connected to the linear driving component, and a second connecting rod rotationally connected to the first connecting rod, the second connecting rod being fixedly connected to the corresponding inner ring.
[0021] In one specific implementation, the first cross-roller bearing and the second cross-roller bearing are arranged axially spaced apart, and the two second connecting rods are inserted into the gap between the first cross-roller bearing and the second cross-roller bearing and fixedly connected to the corresponding inner ring.
[0022] In one specific implementation, the linear driving component includes a driving cylinder and an overflow valve in communication with the driving cylinder; a piston rod of the driving cylinder is hingedly connected to the two first connecting rods.
[0023] In one specific implementation, a heat dissipation ring is further included, the heat dissipation ring is in heat-conducting connection with one of the first positioning disc and the second positioning disc, and the clamping groove is located in the inner ring of the heat dissipation ring.
[0024] In the second aspect, the motor wire end clamping device is further provided, which includes the lifting device arranged along the axial direction of the motor and the positioning clamp as described in any one of the above technical solutions; wherein the lifting device is used for positioning and supporting the stator of the motor; and when the stator is lifted to the second set position, the wire end is inserted into the clamping groove.
[0025] In the above technical solution, the adapter assembly is used as the support clamping assembly, and the clamping assembly and the adapter assembly are in the nested quick connection mode, so that the clamping assembly can be conveniently replaced, the matching clamping assembly can be quickly replaced when clamping the wire end of the motor stator with different diameters, and the adaptability of the positioning clamp is improved. In addition, the two positioning discs in the clamping assembly are driven to rotate relative to each other by the driving mechanism composed of the linear driving component and the linkage assembly to clamp the wire end, which can provide a larger clamping force. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 The application scenario of the positioning clamp provided by the embodiment of the present application is shown in the figure;
[0027] Figure 2 The structural schematic diagram of the positioning clamp provided by the embodiment of the present application is shown in the figure;
[0028] Figure 3 The exploded schematic diagram of the positioning clamp provided by the embodiment of the present application is shown in the figure;
[0029] Figure 4 The top view of the positioning clamp provided by the embodiment of the present application is shown in the figure;
[0030] Figure 5 Fig. 1 is a perspective view of a positioning fixture according to an embodiment of the present application; Figure 4 Fig. 2 is a sectional view taken along line A-A in Fig. 1;
[0031] Figure 6 Fig. 3 is a schematic view of a partial enlargement at B in Fig. 1. Figure 5 Fig. 4 is a sectional view taken along line C-C in Fig. 1. DETAILED DESCRIPTION
[0032] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.
[0033] It should be noted that, unless otherwise defined, technical or scientific terms used in one or more embodiments of the present application should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second" and similar terms used in one or more embodiments of the present application do not indicate any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.
[0034] In order to facilitate the understanding of the positioning fixture provided by the embodiments of the present application, the application scenario thereof is first described. The positioning fixture provided by the embodiments of the present application is applied to the production process of a motor. In the production process of the motor, the wire ends on the stator of the motor need to be welded. In the prior art, a clamping disc is used to clamp and fix the wire ends so as to facilitate subsequent welding. However, since the diameters of the stators of different motors are different, a plurality of clamping discs with different diameters need to be matched, and 2 manual workstations are required for manual disassembly and assembly or automatic disassembly and assembly equipment needs to be added, which is relatively high in equipment cost and labor cost. Therefore, the embodiments of the present application provide a positioning fixture to improve the adaptability of the positioning fixture. The positioning fixture will be described in detail below in combination with specific drawings and embodiments.
[0035] The positioning fixture provided by the embodiments of the present application is applied to the stator of a flat copper wire motor. When the stator of the flat copper wire motor is prepared, the wire ends of the flat copper wires on the stator of the flat copper wire motor need to be welded together. When welding, the wire ends need to be clamped and fixed by the positioning fixture so as to facilitate subsequent welding.
[0036] Reference is made to Figure 1 , Figure 1An application scenario of the positioning clamp provided in the embodiments of the present application is shown. The positioning clamp 100 provided in the embodiments of the present application is applied to a motor wire end clamping device which cooperates with a welding device and is used to support a stator of a motor and clamp and fix wire ends of the stator before welding. As shown in Figure 1 , the main body structure of the motor wire end clamping device mainly includes a jacking device 200 and the positioning clamp 100, and the jacking device 200 and the positioning clamp 100 are supported by a support frame 300. Figure 1 The placement direction of the motor wire end clamping device shown in
[0037] In use, the stator of the motor is first fixed on the jacking device 200, and then the jacking device 200 drives the stator of the motor to rise to a set height. When the stator rises to the set height, the wire ends of the stator are inserted into the positioning clamp 100 and clamped and fixed by the positioning clamp 100, thereby forming a stable state. Then the welding device welds the wire ends.
[0038] When different stators are welded, the positions of the wire ends are different due to different diameters of the stators. In the prior art, different positioning clamps 100 are replaced, while in the embodiments of the present application, the positioning clamp 100 is provided by using an internal quick release mode to set the clamping assembly 10 cooperating with the wire ends, so that the matching clamping assembly 10 can be quickly replaced according to different stators without replacing the entire positioning clamp 100. The specific structure of the positioning clamp 100 provided in the embodiments of the present application is described in detail below.
[0039] Reference is made to Figure 2 and Figure 3 , Figure 2 A structural schematic diagram of the positioning clamp provided in the embodiments of the present application is shown, Figure 3 An exploded schematic diagram of the positioning clamp provided in the embodiments of the present application is shown. The positioning clamp provided in the embodiments of the present application mainly includes a support seat 20, an adapter assembly 60, a clamping assembly 10 and a driving mechanism 30. The support seat 20 serves as a support structure of the entire positioning clamp to provide stable support for the adapter assembly 60 and the driving mechanism 30. The clamping assembly 10 is a component cooperating with the wire ends and is used to clamp the wire ends to keep the wire ends stable before welding. The adapter assembly 60 serves as a structure connecting the clamping assembly 10 and the support seat 20 and is used to drive the clamping assembly 10 to realize the functions of clamping and releasing the wire ends. The driving mechanism 30 serves as a power component to provide the force required by the clamping assembly 10 to clamp the wire ends. The specific structures and functions of each part are described in detail below with reference to specific drawings.
[0040] With reference to Figure 2 and Figure 3 shown, the support seat 20 provided by the embodiment of the present application is a ring-shaped seat, which has a hollow cavity inside, the cavity is used to provide space for accommodating the motor stator, of course, also provides space for the clamping assembly 10 to cooperate with the wire end on the stator. It should be understood that the support seat 20 provided by the embodiment of the present application has a certain structural strength, which can be made of metal materials such as steel, iron or alloy, etc. Common metals are not specifically limited in the embodiment of the present application.
[0041] With reference to Figure 4 , Figure 5 and Figure 6 , wherein, Figure 4 shows a plan view of the positioning clamp provided by the embodiment of the present application, Figure 5 shows Figure 4 the partial enlarged view of A-A in the figure, Figure 6 shows Figure 5 the partial enlarged view of B in the figure. The clamping assembly 10 provided by the embodiment of the present application is used to clamp and fix the wire end. In specific arrangement, the clamping assembly 10 includes two positioning discs, for the convenience of description, the two positioning discs are named as the first positioning disc 11 and the second positioning disc 12. In order to realize the clamping function of the wire end, the clamping groove 101 for clamping the wire end is arranged on the first positioning disc 11 and the second positioning disc 12, and when the first positioning disc 11 and the second positioning disc 12 relatively rotate by a set angle, the clamping groove 101 clamps the wire end. In specific arrangement, the first positioning disc 11 and the second positioning disc 12 are coaxially arranged, and the first positioning disc 11 and the second positioning disc 12 can relatively rotate around the axis to clamp and release the wire end. For example, when the first positioning disc 11 and the second positioning disc 12 rotate away from each other, the clamping groove 101 can clamp the wire end, and when the first positioning disc 11 and the second positioning disc 12 relatively rotate, the clamping groove 101 releases the wire end.
[0042] It should be understood that the number and position of the clamping groove 101 correspond to the number and position of the wire end on the stator, so as to ensure that the wire end to be welded can be clamped and fixed by the clamping groove 101.
[0043] The adapter assembly 60 is an assembly matched with the clamping assembly 10, and the clamping assembly 10 is matched with the adapter assembly 60 in a quick-release manner. Specifically, the adapter assembly 60 includes two adapter rings, which are named as a first adapter ring 61 and a second adapter ring 62 for convenience of description. When matched, the two adapter rings are matched with the two positioning discs one by one. The specific matching relationship is as follows: the first positioning disc 11 is nested in the first adapter ring 61 and is circumferentially limited, so that the first positioning disc 11 rotates synchronously with the first adapter ring 61; the second positioning disc 12 is nested in the second adapter ring 62 and is circumferentially limited, so that the second positioning disc 12 rotates synchronously with the second adapter ring 62. When the positioning disc (the first positioning disc 11 or the second positioning disc 12) is matched with the corresponding adapter ring (the first adapter ring 61 or the second adapter ring 62) in a nested manner, the quick-release connection of the positioning disc and the corresponding adapter ring can be facilitated.
[0044] When the adapter assembly 60 is matched with the support seat 20, the first adapter ring 61 and the second adapter ring 62 are respectively rotationally connected with the support seat 20, and the first adapter ring 61 and the second adapter ring 62 are coaxially arranged. When the first adapter ring 61 and the second adapter ring 62 rotate relative to the support seat 20, the first adapter ring 61 and the second adapter ring 62 can rotate around the axis of the same line. When the first positioning disc 11 and the second positioning disc 12 are connected with the first adapter ring 61 and the second adapter ring 62 respectively, the first positioning disc 11, the second positioning disc 12, the first adapter ring 61 and the second adapter ring 62 are collinear. When arranged in the above manner, the relative rotation of the first adapter ring 61 and the second adapter ring 62 can drive the first positioning disc 11 and the second positioning disc 12 to rotate relative to the same axis, so as to drive the clamping assembly 10 to clamp and release the wire end through the first adapter ring 61 and the second adapter ring 62.
[0045] Continuing to refer to Figure 2 As shown in the drawings, the driving mechanism 30 provided by the embodiment of the present application serves as a power member to drive the first adapter ring 61 and the second adapter ring 62 to rotate relative to each other, and then drive the first positioning disc 11 and the second positioning disc 12 to rotate and clamp the wire end. The driving mechanism 30 also provides the clamping force of the clamping assembly 10 when clamping the wire end. The driving mechanism 30 includes a linear driving component 31 and two link assemblies 32, wherein the linear driving component 31 is connected with the link assemblies 32, and the two link assemblies 32 are respectively and correspondingly connected with the first adapter ring 61 and the second adapter ring 62. That is, the two link assemblies are respectively and correspondingly connected with the two adapter rings. When driven, the linear motion of the linear driving component 31 is converted into the rotation of the first adapter ring 61 and the second adapter ring 62 through the link assemblies 32, so as to drive the first adapter ring 61 and the second adapter ring 62 to rotate relative to each other, and realize the functions of clamping and releasing the wire end.
[0046] It can be seen from the above description that the positioning clamp provided in the embodiments of the present application adopts the adapter assembly 60 as the support clamping assembly 10, and the clamping assembly 10 and the adapter assembly 60 adopt the nested quick connection mode, so that the clamping assembly 10 can be conveniently replaced, and when the wire end of the motor stator with different diameters is clamped, the matched clamping assembly 10 can be quickly replaced, thereby improving the adaptability of the positioning clamp. In addition, the two positioning discs in the clamping assembly 10 are driven to rotate relative to each other by the driving mechanism 30 composed of the linear driving part 31 and the connecting rod assembly 32 to clamp the wire end, which can provide a larger clamping force.
[0047] When the clamping groove is formed, the first clamping hole is arranged on the first positioning disc 11, and the second clamping hole is arranged on the second positioning disc 12, and the first clamping hole and the second clamping hole are correspondingly communicated and form a clamping groove. The size of the first clamping hole and the size of the second clamping hole are both greater than the size of the wire end. When the first positioning disc 11 and the second positioning disc 12 rotate to a certain angle, the first clamping hole and the second clamping hole overlap, at this time, the wire end can be disassembled into the first clamping hole and the second clamping hole. When the first positioning disc 11 and the second positioning disc 12 rotate to another angle, the first clamping hole and the second clamping hole are staggered, and the wire end is clamped and fixed by the hole walls of the first clamping hole and the second clamping hole.
[0048] Continuing to refer to Figure 2 and Figure 3 , when the first adapter ring 61 and the first positioning disc 11 are nested and matched and the first positioning disc 11 is circumferentially limited, a plurality of first limiting notches are arranged on the first adapter ring 61, and a plurality of first limiting protrusions are correspondingly arranged on the first positioning disc 11. In specific arrangement, the plurality of first limiting notches are arranged at intervals around the axis of the first adapter ring 61, and the plurality of first limiting protrusions are also arranged at intervals around the axis of the first adapter ring 61. When they are matched, the plurality of first limiting protrusions and the plurality of first limiting notches are one-to-one matched, the first limiting protrusions are nested in the corresponding first limiting notches, and the first positioning disc 11 is nested in the first adapter ring 61 and circumferentially limited to the first positioning disc 11.
[0049] It should be understood that the plurality of references in the embodiments of the present application are two and more than two. In specific arrangement of the first limiting notches, the number of the first limiting notches can be two, three, four, etc.
[0050] In the structure, the first limiting notch is located on the annular surface of the first adapter ring 61, which can be regarded as a sunken notch structure, and the first limiting protrusion is outwardly protruded from the outer side of the first positioning disc 11. When assembling, the first limiting protrusion is inserted into the first limiting notch along the axial direction of the first adapter ring 61, so that the two are matched. When the first positioning disc 11 and the first adapter ring 61 are matched, the first positioning disc 11 and the first adapter ring 61 can be quickly assembled by the first limiting protrusion lapping in the first limiting notch. When disassembling the first positioning disc 11, the first positioning disc 11 can be directly taken out from the first adapter ring 61.
[0051] In an implementable scheme, a plurality of first positioning pins are arranged on the first adapter ring 61, and corresponding first positioning holes are arranged on the first positioning disc 11. The matching of the first positioning pins and the first positioning holes can ensure the positional accuracy of the first positioning disc 11 when connected with the first adapter ring 61.
[0052] Similarly, when the second adapter ring 62 is matched with the second positioning disc 12, a similar structure is also adopted, that is, a plurality of second limiting notches are arranged on the second adapter ring 62, and the second limiting notches are arranged at intervals around the axis of the second adapter ring 62; and the second positioning disc 12 is provided with a second limiting protrusion matched with each second limiting notch. The specific arrangement mode of the second limiting protrusion and the second limiting notch can refer to the specific arrangement mode of the first limiting protrusion and the first limiting notch, which will not be described in detail here. In addition, when the second adapter ring 62 and the second positioning disc 12 are matched, the matching of the second positioning pin and the second positioning hole can also be realized, which will not be described here.
[0053] As can be seen from the matching of the first positioning disc 11 and the second positioning disc 12 with the corresponding first adapter ring 61 and second adapter ring 62, the positioning disc can be directly placed on the corresponding adapter ring to realize the circumferential limiting of the positioning disc, which is convenient for disassembly and assembly. When the wire end of a motor with different diameters is clamped and fixed, the first positioning disc 11 and the second positioning disc 12 can be conveniently replaced.
[0054] As an optional scheme, along the insertion direction of the wire end, the first positioning disc 11 is located downstream of the second positioning disc 12 and limits the axial movement of the second positioning disc 12. In addition, the positioning clamp further comprises a limiting ring 50, which abuts against the first positioning disc 11 and limits the axial movement of the first positioning disc 11. Figure 2The placement direction of the positioning clamp shown is the reference direction, in the vertical upward direction (the insertion direction of the line end), the second positioning disc 12 is located at the lowermost position, the first positioning disc 11 is located above the second positioning disc 12, and the limiting ring 50 is located above the first positioning disc 11. When this structure is adopted, the lower side of the second positioning disc 12 is supported through the second adapter ring 62, and the upper side of the second positioning disc 12 is limited by the first positioning disc 11; the lower side of the first positioning disc 11 is supported through the first adapter ring 61, and the upper side of the first positioning disc 11 is limited by the limiting ring 50. Through the cooperation of the above-mentioned components, the axial limitation of the first positioning disc 11 and the second positioning disc 12 is realized, and the stability of the clamping assembly 10 during clamping is ensured.
[0055] In an implementable scheme, the inner diameter of the first adapter ring 61 is larger than the inner diameter of the second adapter ring 62, so that the space formed by the first adapter ring 61 and the second adapter ring 62 for assembling the clamping assembly 10 is a space that is large at the top and small at the bottom. Correspondingly, the size of the first positioning disc 11 is larger than the size of the second positioning disc 12, so that the first positioning disc 11 and the second positioning disc 12 can be conveniently assembled onto the corresponding adapter ring, and no interference will occur during assembly.
[0056] Continuing to refer to Figure 5 and Figure 6 When the adapter assembly 60 is rotationally connected with the support seat 20, the rotationally connected can be realized through a bearing. Specifically, the positioning clamp further comprises two cross roller bearings, for the convenience of description, the two cross roller bearings are respectively named as the first cross roller bearing 81 and the second cross roller bearing 82. Among them, the first adapter ring 61 is rotationally connected with the support seat 20 through the first cross roller bearing 81, and the second adapter ring 62 is rotationally connected with the support seat 20 through the second cross roller bearing 82. So that when the two adapter rings are rotationally connected with the support seat 20, the bearing can reduce the friction. In addition, when the bearing adopts a cross roller bearing, the cross roller bearing can provide a larger supporting force to support the adapter ring and the positioning disc.
[0057] When the adapter ring is connected with the corresponding bearing, the outer ring of the first crossed roller bearing 81 is fixedly connected with the support base 20, and the inner ring of the first crossed roller bearing 81 and the corresponding connecting rod assembly 32 are fixedly connected. Correspondingly, the outer ring of the second crossed roller bearing 82 is fixedly connected with the support base 20, and the inner ring of the second crossed roller bearing 82 and the corresponding connecting rod assembly 32 are fixedly connected. That is, in the above structure, the outer rings of the first crossed roller bearing 81 and the second crossed roller bearing 82 are fixed structures and are fixed on the support base 20, and the inner rings of the first crossed roller bearing 81 and the second crossed roller bearing 82 are connecting structures to connect the corresponding adapter rings. When the adapter ring is connected with the corresponding inner ring, it can be fixedly connected through a threaded connecting piece (such as a bolt or a screw), and of course it can also be fixedly connected through other ways, as long as it can support and fix the adapter ring.
[0058] Continuing to refer to the figures shown in Figure 2 , Figure 5 and Figure 6 , when the adapter ring is supported by the bearing, the limiting ring 50 can also be fixed on the bearing. Exemplarily, the positioning clamp further includes a limiting seat 40, which is fixedly connected with the inner ring of the first crossed roller bearing 81 to support the limiting seat 40. The limiting seat 40 has a clamping groove, and the limiting ring 50 is clamped in the clamping groove and abuts against the first adapter ring 61 to abut against the first positioning plate, thereby achieving axial limiting of the first positioning disc 11. In the specific assembly, the limiting seat 40 has an assembly gap that is in communication with the clamping groove, and the limiting ring 50 is provided with a third limiting protrusion that cooperates with the assembly gap. In the assembly, the third limiting protrusion is inserted into the assembly gap, and the limiting ring 50 is rotated. When the limiting ring 50 is rotated to a first set position, the third limiting protrusion is clamped in the clamping groove, thereby achieving axial limiting of the limiting ring 50. In this way, the assembly of the limiting ring 50 is facilitated. Moreover, the limiting ring 50 rotates together with the first positioning disc 11, thereby ensuring the stability of the two, that is, the stability of the axial limiting of the first positioning disc 11.
[0059] When the driving mechanism 30 drives the adapter assembly 60 to rotate, the two connecting rod assemblies 32 are arranged on both sides of the linear driving component 31 and are symmetrically arranged, thereby ensuring that the linear driving component 31 can drive the two connecting rod assemblies 32 to rotate synchronously when driving. In the specific arrangement, one of the connecting rod assemblies 32 is taken as an example for description. The connecting rod assembly 32 includes a first connecting rod and a second connecting rod that are rotationally connected. The first connecting rod is rotationally connected with the linear driving component 31, and the second connecting rod is fixedly connected with the corresponding inner ring. The inner ring corresponding to the second connecting rod 322 refers to the inner ring fixedly connected with the adapter ring corresponding to the second connecting rod 322.
[0060] When the linear driving part 31 is driven linearly, the second connecting rod 322 is driven to rotate by the first connecting rod 321, so as to drive the inner ring to rotate, and drive the adapter ring to rotate by the inner ring, so as to drive the positioning disc to rotate.
[0061] That is, in the embodiment of the present application, the driving mechanism 30 is directly connected with the cross roller bearing, and drives the adapter ring to rotate through the cross roller bearing. When the structure is adopted, the arrangement of the driving mechanism 30 is facilitated, and the structure is more compact.
[0062] In the specific arrangement, the first cross roller bearing 81 and the second cross roller bearing 82 are arranged in the axial direction. That is, when the first cross roller bearing 81 and the second cross roller bearing 82 are fixed on the support base 20, a gap is arranged in the axial direction between the two cross roller bearings, and the two second connecting rods are inserted into the gap between the first cross roller bearing 81 and the second cross roller bearing 82 and are fixedly connected with the corresponding inner ring. When the structure is adopted, the two second connecting rods are fixedly connected with the corresponding inner ring, and in addition, the two second connecting rods can be kept at a consistent height as much as possible, so as to facilitate the arrangement of the driving mechanism 30.
[0063] In an implementable scheme, the linear driving part 31 provided by the embodiment of the present application comprises a driving cylinder and an overflow valve in communication with the driving cylinder, wherein the piston rod of the driving cylinder is hinged with the two first connecting rods 321. The driving cylinder has simple structure and high reliability, can provide sufficient driving force and clamping force for clamping the wire end. In addition, the overflow valve is arranged to avoid excessive driving force, so as to ensure that the required clamping force is provided.
[0064] As an optional scheme, the positioning clamp provided by the embodiment of the present application further comprises a limiting structure arranged on the support base 20. In the specific arrangement, the limiting structure faces the linear driving part 31 and is used for limiting the displacement amount of the linear driving part 31, so as to reduce the situation that the linear driving part 31 drives the two positioning discs to excessively clamp the wire end.
[0065] As an optional scheme, the positioning clamp provided by the embodiment of the present application further comprises a heat dissipation ring, the heat dissipation ring is in heat conduction connection with one of the first positioning disc 11 and the second positioning disc 12, and the clamping groove 101 is located in the inner ring of the heat dissipation ring. The heat dissipation ring can be in heat conduction connection with the first positioning disc 11 or the second positioning disc 12. In the specific heat conduction connection, the heat dissipation ring can be adhered on the positioning disc through heat conduction adhesive. For example, the heat dissipation ring can be arranged on the first positioning disc 11 or the second positioning disc 12. When the first positioning disc 11 is located downstream of the second positioning disc 12 along the insertion direction of the wire end, the heat dissipation ring can be arranged on the first positioning disc 11, so that the heat generated by welding can be quickly dissipated, and the heat dissipation effect is improved.
[0066] As an optional solution, the positioning fixture may also include a grounding component, which is electrically connected to the first positioning disk 11 and the second positioning disk 12. Specifically, the grounding component may be electrically connected to the first crossed roller bearing 81 and the second crossed roller bearing 82 to achieve conductivity with the first positioning disk 11 and the second positioning disk 12. Grounding is achieved through the grounding component, which facilitates soldering of the wire ends.
[0067] As an optional solution, the positioning fixture provided in this application embodiment also includes a support plate 70, which is used to support the support base 20 and the drive mechanism 30. In a specific setting, the support base 20 is fixed to the support plate 70 by a threaded connector (such as a bolt or screw), and the linear drive component 31 of the drive mechanism 30 is fixed to the support plate 70 to support the linear drive component 31.
[0068] This application also provides a motor wire end clamping device, such as... Figure 1 As shown, the device includes lifting devices 200 arranged at intervals along the axial direction of the motor and positioning clamps 100 of any of the above; wherein, the lifting devices 200 are used to position and support the stator of the motor; and when the stator is lifted to the second set position, the wire end is inserted into the clamping groove.
[0069] As can be seen from the above description, the motor wire end clamping device provided in this application embodiment uses an adapter component as the supporting clamping component structure, and the clamping component and the adapter component adopt a nested quick-connect method, which facilitates the replacement of the clamping component. When clamping the wire ends of motor stators of different diameters, the matching clamping component can be quickly replaced, improving the adaptability of the positioning fixture. In addition, the clamping of the wire end is achieved by driving the two positioning disks in the clamping component to rotate relative to each other through a drive mechanism composed of a linear drive component and a linkage assembly, which provides a large clamping force.
[0070] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.
[0071] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A positioning jig for clamping a wire end of an electric machine, characterized in that, The positioning clamp comprises a support seat, an adapter assembly and a clamping assembly, wherein The adapter assembly comprises coaxially arranged first and second adapter rings, and the first and second adapter rings are respectively rotationally connected with the support seat; The clamping assembly comprises a first positioning disc nested in the first adapter ring and circumferentially limited, and a second positioning disc nested in the second adapter ring and circumferentially limited, wherein the first and second positioning discs are provided with clamping grooves for clamping the wire end, and when the first and second positioning discs are relatively rotated by a set angle, the clamping grooves clamp the wire end; The positioning clamp further comprises a driving mechanism, which comprises a linear driving component and a connecting rod assembly connected with the linear driving component, and the number of the connecting rod assemblies is two, and the two connecting rod assemblies are respectively and correspondingly connected with the first and second adapter rings.
2. The positioning fixture of claim 1, wherein The first adapter ring is provided with a plurality of first limiting notches, and the plurality of first limiting notches are arranged at intervals around the axis of the first adapter ring; the first positioning disc is provided with a first limiting protrusion matched with each first limiting notch; The second adapter ring is provided with a plurality of second limiting notches, and the plurality of second limiting notches are arranged at intervals around the axis of the second adapter ring; the second positioning disc is provided with a second limiting protrusion matched with each second limiting notch.
3. The positioning fixture of claim 2, wherein Along the insertion direction of the wire end, the first positioning disc is located downstream of the second positioning disc and limits the axial movement of the second positioning disc; The positioning clamp further comprises a limiting ring, wherein the limiting ring abuts against the first positioning disc and limits the axial movement of the first positioning disc.
4. The positioning fixture of claim 3, wherein Further comprising a first cross-roller bearing and a second cross-roller bearing, wherein The first adapter ring is rotationally connected with the support seat through the first cross-roller bearing; The second adapter ring is rotationally connected with the support seat through the second cross-roller bearing.
5. The positioning fixture of claim 4, wherein Further comprising a limiting seat, the limiting seat is fixedly connected with the inner ring of the first cross-roller bearing, and the limiting seat has a clamping groove; the limiting ring is clamped in the clamping groove and abuts against the first positioning disc; wherein The limiting seat has an assembly notch, and the limiting ring is provided with a third limiting protrusion matched with the assembly notch; when the limiting ring is rotated to a first set position, the third limiting protrusion is clamped in the clamping groove.
6. The positioning fixture of claim 4, wherein The outer ring of the second cross-roller bearing is fixedly connected with the support seat, and the inner ring of the second cross-roller bearing is fixedly connected with the second adapter ring and the corresponding connecting rod assembly respectively; The outer ring of the first cross-roller bearing is fixedly connected with the support seat, and the inner ring of the first cross-roller bearing and the corresponding connecting rod assembly are fixedly connected respectively.
7. The positioning fixture of claim 4, wherein The connecting rod assembly comprises a first connecting rod rotationally connected with the linear driving component, and a second connecting rod rotationally connected with the first connecting rod, and the second connecting rod is fixedly connected with the corresponding inner ring.
8. The positioning fixture of claim 7, wherein The first cross-roller bearing and the second cross-roller bearing are arranged axially spaced apart, and the two second connecting rods are inserted into the gap between the first cross-roller bearing and the second cross-roller bearing and fixedly connected with the corresponding inner ring.
9. The positioning fixture of claim 7, wherein, The linear driving component comprises a driving cylinder and an overflow valve in communication with the driving cylinder; a piston rod of the driving cylinder is hinged with the two first connecting rods.
10. The positioning jig according to any one of claims 1 to 9, characterized by A heat dissipation ring is further included, which is in heat conduction connection with one of the first positioning disc and the second positioning disc, and the clamping groove is located in an inner ring of the heat dissipation ring.
11. An electrical machine wire end gripping device, characterized by, The jacking device and the positioning clamp according to any one of claims 1-10 are arranged spaced apart along the axial direction of the motor; the jacking device is used for positioning and supporting the stator of the motor; and when the stator is jacked to the second set position, the wire end is inserted into the clamping groove.