Positioning jig applied to laser welding of motor end cover

Abstract

The utility model discloses a positioning jig applied to laser welding of a motor end cover, which comprises a fixed base, the fixed base is provided with a casing positioning die and a positioning core rod which are coaxially arranged, the positioning core rod is embedded in a core rod mounting hole of the casing positioning die, and the upper end part of the positioning core rod extends to the upper end side of the casing positioning die; the positioning jig applied to laser welding of the motor end cover further comprises an auxiliary pressing rod which is vertically arranged, the auxiliary pressing rod is located over the positioning core rod, and the auxiliary pressing rod and the positioning core rod are coaxially arranged. The periphery of the machine shell positioning die is rotationally sleeved with a rotating disc, the upper surface of the rotating disc is provided with a positioning pin shifting mechanism and a machine shell positioning block with the position adjustable, and the positioning pin shifting mechanism is provided with an end cover positioning pin which is horizontally and transversely arranged. By means of the structural design, the welding angle adjusting device has the advantages of being novel in structural design, good in welding positioning stability and high in adaptability, and the welding angle between the motor shell and the motor end cover can be adaptively adjusted.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a positioning fixture for laser welding of motor end caps. Background Technology

[0002] Chinese utility model patent with patent number ZL202323513043.3 and patent name: A welding positioning device for motor end cover, which substantially discloses a welding positioning device for motor end cover and motor housing; wherein, the welding positioning device for motor end cover discloses the following technical solution, specifically: a welding positioning device for motor end cover, including a positioning mechanism, the positioning mechanism including a support base, a positioning mold and a positioning rod, the upper end of the support base is provided with a positioning groove, the positioning mold is installed in the positioning groove, the center of the positioning mold is provided with a through hole, the lower end of the positioning rod is inserted into the through hole and abuts against the bottom of the positioning groove, the upper end of the positioning rod extends out of the through hole, and the end of the positioning mold away from the positioning groove is provided with an avoidance groove.

[0003] In the process of welding and positioning the motor housing and the mounting plate (motor end cover) using the above-mentioned motor end cover welding positioning device, the positioning mold is first installed in the positioning groove, and the lower end of the positioning mold abuts against the bottom of the positioning groove. Then, the positioning rod is installed in the through hole. Next, the housing is installed on the positioning mold, and the upper end of the positioning rod passes through the mounting hole of the motor housing. Finally, the through hole opened on the mounting plate passes through the positioning rod.

[0004] It should be noted that the aforementioned motor end cover welding positioning device still has the following defects, specifically:

[0005] Defect 1: Due to the lack of a pressure bar structure, when welding the motor end cover and motor housing after they are positioned, the motor end cover and motor housing lack a holding force, which can easily cause vertical displacement during welding, making it difficult to effectively guarantee the welding quality.

[0006] Defect 2: For motor housings and motor end covers with welding angle requirements, this motor end cover welding positioning device has difficulty in accurately positioning the welding angle and cannot adaptively adjust the welding angle according to different angle requirements. Utility Model Content

[0007] The purpose of this utility model is to provide a positioning fixture for laser welding of motor end caps, which addresses the shortcomings of the existing technology. This positioning fixture has a novel structural design, good welding positioning stability, strong adaptability, and can adaptively adjust the welding angle between the motor housing and the motor end cap.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0009] A positioning fixture for laser welding of motor end caps includes a fixed base, on which a housing positioning mold and a positioning mandrel are mounted coaxially. The core of the housing positioning mold has an upward-opening mandrel mounting hole, and the positioning mandrel is embedded in the mandrel mounting hole, with the upper end of the positioning mandrel extending to the upper side of the housing positioning mold.

[0010] The positioning fixture used for laser welding of motor end caps also includes an auxiliary pressure rod arranged vertically. The auxiliary pressure rod is located directly above the positioning mandrel and is coaxial with the positioning mandrel.

[0011] The outer periphery of the housing positioning mold is fitted with a rotating disk. The upper surface of the rotating disk is equipped with a positioning pin shifting mechanism and a housing positioning block with adjustable position. The positioning pin shifting mechanism is equipped with end cap positioning pins arranged horizontally.

[0012] The housing positioning block includes a positioning block fixing part and a housing positioning part, wherein the positioning block fixing part and the housing positioning part are an integral structure;

[0013] The positioning block fixing part has a vertical through arc-shaped groove, and the rotating disk has an internal threaded hole corresponding to the arc-shaped groove. A locking screw is screwed into the internal threaded hole of the rotating disk. The locking screw passes through the arc-shaped groove of the positioning block fixing part, and the positioning block fixing part is fastened to the upper surface of the rotating disk by the locking screw.

[0014] The positioning pin shifting mechanism includes a fixed guide rail screwed to the upper surface of the rotating disk, a movable slider slidably mounted on the fixed guide rail, and a locking mechanism installed on the movable slider. The fixed guide rail, the movable slider, and the locking mechanism together form a locking guide rail slider pair.

[0015] The movable slider is securely mounted with a positioning pin mounting seat, and the end cap positioning pin is mounted on the positioning pin mounting seat.

[0016] The lower end of the auxiliary pressure rod is provided with a downward-facing pressure rod alignment hole.

[0017] The rotating disk is rotatably mounted on the housing positioning mold via an end face bearing.

[0018] Compared with the prior art, the present invention has the following advantages, specifically:

[0019] 1. The housing positioning block of this utility model can adaptively adjust its position, thereby adaptively adjusting the angle between the housing notch and the end cover notch, and ultimately realizing the adjustment of the welding angle of the motor housing and the motor end cover;

[0020] 2. After the motor housing and motor end cover are positioned, this utility model uses an auxiliary pressure rod to press and fix the motor housing and motor end cover. This can effectively prevent the motor housing and motor end cover from moving vertically during laser welding, thereby improving the welding quality.

[0021] 3. Therefore, this utility model has the advantages of novel structural design, good welding positioning stability, and strong adaptability, and can adaptably adjust the welding angle between the motor housing and the motor end cover. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0025] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0026] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0027] Figure 5 This is a partial structural schematic diagram of the present invention.

[0028] exist Figures 1 to 5 This includes:

[0029] 1-Fixed base; 2-Housing positioning mold; 21-Core rod mounting hole; 3-Positioning core rod; 4-Auxiliary pressure rod; 41-Pressure rod alignment hole; 5-Rotating disk; 51-Internal threaded hole; 6-Positioning pin shifting mechanism; 61-Fixed guide rail; 62-Modible slider; 63-Positioning pin mounting seat; 7-Housing housing positioning block; 71-Positioning block fixing part; 711-Arc-shaped through groove; 72-Housing housing positioning part; 8-End cover positioning pin; 9-Motor housing; 91-Housing housing center hole; 92-Housing housing notch; 10-Motor end cover; 101-End cover center hole; 102-End cover notch. Detailed Implementation

[0030] The present invention will now be described in conjunction with specific embodiments.

[0031] Example 1, as Figures 1 to 5As shown, a positioning fixture for laser welding of motor end caps includes a fixed base 1. The fixed base 1 is equipped with a housing positioning mold 2 and a positioning mandrel 3 arranged coaxially. The core of the housing positioning mold 2 has an upward-opening mandrel mounting hole 21. The positioning mandrel 3 is embedded in the mandrel mounting hole 21, and the upper end of the positioning mandrel 3 extends to the upper end side of the housing positioning mold 2.

[0032] Among them, such as Figures 1 to 4 As shown, the positioning fixture used for laser welding of motor end caps also includes a vertically arranged auxiliary pressure rod 4, which is located directly above the positioning mandrel 3 and is coaxial with the positioning mandrel 3. It should be explained that the auxiliary pressure rod 4 in this embodiment can be driven by a cylinder to achieve lifting and lowering movement.

[0033] Furthermore, such as Figures 1 to 5 As shown, a rotating disk 5 is rotatably mounted on the periphery of the housing positioning mold 2. The upper surface of the rotating disk 5 is equipped with a positioning pin shifting mechanism 6 and an adjustable housing positioning block 7. The positioning pin shifting mechanism 6 is equipped with end cap positioning pins 8 arranged horizontally. It should be explained that the rotating disk 5 is rotatably mounted on the housing positioning mold 2 via end face bearings.

[0034] The positioning fixture used in this embodiment for laser welding of motor end caps is applied to the laser welding process of motor end caps 10 and motor housing 9. The working steps are as follows:

[0035] Step a: Position the motor housing 9 on the upper end of the housing positioning mold 2, and make the upper end of the positioning mandrel 3 pass through the housing center hole 91 of the motor housing 9, and make the housing positioning block 7 inserted into the housing notch 92 of the motor housing 9. The housing positioning mold 2, the housing positioning block 7, and the positioning mandrel 3 cooperate to achieve accurate positioning of the motor housing 9.

[0036] Step b: After the motor housing 9 is positioned, align the center hole 101 of the motor end cover 10 with the positioning mandrel 3, and insert the upper end of the mandrel into the center hole 101 of the motor end cover 10, so that the motor housing 9 and the motor end cover 10 are stacked concentrically.

[0037] Step c: After the motor end cover 10 is fitted onto the positioning core rod 3, the positioning pin shifting mechanism 6 moves the operating end cover positioning pin 8 so that the end cover positioning pin 8 is inserted into the end cover notch 102 of the motor end cover 10, thereby enabling the end cover positioning pin 8 to perform circumferential positioning on the motor end cover 10.

[0038] Step d: After the motor end cover 10 is positioned by the end cover positioning pin 8, the auxiliary pressure rod 4 moves down and presses the motor end cover 10 and the motor housing 9 together to achieve the clamping and fixing of the motor housing 9 and the motor end cover 10.

[0039] Step e: During the laser welding process of the motor housing 9 and the motor end cover 10 by the laser welding head, the rotating disk 5 is rotated. The rotating disk 5 drives the housing positioning block 7 and the end cover positioning pin 8 to rotate synchronously, thereby making the motor housing 9 and the motor end cover 10 rotate synchronously to realize the laser welding position movement.

[0040] Step f: After the laser welding is completed, the auxiliary pressure rod 4 moves up and resets, and the welded motor housing 9 and motor end cover 10 are removed from the positioning mandrel 3.

[0041] It should be emphasized that the housing positioning block 7 in this embodiment can be adjusted in position, thereby adjusting the angle between the housing notch 92 and the end cover notch 102, and ultimately achieving the adjustment of the welding angle of the motor housing 9 and the motor end cover 10.

[0042] It should be further emphasized that after the motor housing 9 and the motor end cover 10 are positioned, this embodiment uses an auxiliary pressure rod 4 to press and fix the motor housing 9 and the motor end cover 10. This can effectively prevent the motor housing 9 and the motor end cover 10 from moving vertically during laser welding, thereby improving the welding quality.

[0043] In summary, the positioning fixture for laser welding of motor end caps in this embodiment has the advantages of novel structural design, good welding positioning stability, and strong adaptability, and can adaptively adjust the welding angle between the motor housing 9 and the motor end cap 10.

[0044] Example 2, as Figures 1 to 5 As shown, the difference between this embodiment 2 and embodiment 1 is that the housing positioning block 7 includes a positioning block fixing part 71 and a housing positioning part 72, and the positioning block fixing part 71 and the housing positioning part 72 are an integral structure.

[0045] The positioning block fixing part 71 has a vertical through arc-shaped groove 711, and the rotating disk 5 has an internal threaded hole 51 corresponding to the arc-shaped groove 711. A locking screw is screwed into the internal threaded hole 51 of the rotating disk 5. The locking screw passes through the arc-shaped groove 711 of the positioning block fixing part 71, and the positioning block fixing part 71 is fastened to the upper surface of the rotating disk 5 by the locking screw.

[0046] During the process of adjusting the housing positioning block 7 according to the welding angle, first loosen the locking screw, and then move the housing positioning block 7 along the arc-shaped through groove 711 of the positioning block fixing part 71, thereby adjusting the position of the housing notch 92 of the motor housing 9; after the housing positioning block 7 is adjusted to the required angle position, tighten the locking screw again and make the locking screw clamp and fix the positioning block fixing part 71 to the upper surface of the rotating disk 5.

[0047] Example 3, as Figure 1 , Figure 3 as well as Figure 5 As shown, the difference between Embodiment 3 and Embodiment 1 is that the positioning pin shifting mechanism 6 includes a fixed guide rail 61 screwed onto the upper surface of the rotating disk 5. A movable slider 62 is slidably mounted on the fixed guide rail 61, and the movable slider 62 is equipped with a locking mechanism. The fixed guide rail 61, the movable slider 62, and the locking mechanism together form a locking guide rail slider pair. It should be explained that the locking guide rail slider pair is already existing technology and will not be described in detail here.

[0048] The movable slider 62 is fastened with a positioning pin mounting seat 63, and the end cap positioning pin 8 is mounted on the positioning pin mounting seat 63.

[0049] During the process of positioning the end cap notch 102 of the motor end cap 10 using the end cap positioning pin 8, after the motor end cap 10 is fitted onto the upper end of the positioning mandrel 3, the position of the motor end cap 10 is rotated and adjusted so that the end cap notch 102 is aligned with the end cap positioning pin. Then, the movable slider 62 is moved toward the motor end cap 10 so that the end cap positioning pin 8 is inserted into the end cap notch 102. Finally, the movable slider 62 is locked and fixed by the locking mechanism so that the end cap positioning pin 8 is kept in the end cap notch 102 of the motor end cap 10 during laser welding.

[0050] Example 4, as Figure 3 and Figure 4 As shown, the difference between this embodiment four and embodiment one is that the lower end of the auxiliary pressure rod 4 is provided with a downward-opening pressure rod alignment hole 41.

[0051] When the auxiliary pressure rod 4 moves down and presses and fixes the motor housing 9 and the motor end cover 10, the upper end of the positioning core rod 3 is inserted into the pressure rod alignment hole 41 of the auxiliary pressure rod 4.

[0052] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A positioning fixture for laser welding of motor end caps, comprising a fixed base (1), wherein the fixed base (1) is equipped with a housing positioning mold (2) and a positioning mandrel (3) arranged coaxially, wherein the core of the housing positioning mold (2) is provided with an upwardly opening mandrel mounting hole (21), the positioning mandrel (3) is embedded in the mandrel mounting hole (21), and the upper end of the positioning mandrel (3) extends to the upper end side of the housing positioning mold (2); characterized in that The positioning fixture used for laser welding of motor end caps also includes an auxiliary pressure rod (4) arranged vertically. The auxiliary pressure rod (4) is located directly above the positioning mandrel (3), and the auxiliary pressure rod (4) is coaxially arranged with the positioning mandrel (3). The outer periphery of the housing positioning mold (2) is fitted with a rotating disk (5). The upper surface of the rotating disk (5) is equipped with a positioning pin shifting mechanism (6) and a housing positioning block (7) with adjustable position. The positioning pin shifting mechanism (6) is equipped with end cap positioning pins (8) arranged horizontally.

2. The positioning jig applied to the laser welding of the motor end cover according to claim 1, characterized in that: The housing positioning block (7) includes a positioning block fixing part (71) and a housing positioning part (72), and the positioning block fixing part (71) and the housing positioning part (72) are an integral structure; The positioning block fixing part (71) has a vertical through arc-shaped groove (711), and the rotating disk (5) has an internal threaded hole (51) corresponding to the arc-shaped groove (711). The internal threaded hole (51) of the rotating disk (5) is screwed with a locking screw. The locking screw passes through the arc-shaped groove (711) of the positioning block fixing part (71), and the positioning block fixing part (71) is fastened to the upper surface of the rotating disk (5) by the locking screw.

3. The positioning jig applied to the laser welding of the motor end cover according to claim 1, characterized in that: The positioning pin shifting mechanism (6) includes a fixed guide rail (61) screwed and fastened to the upper surface of the rotating disk (5). The fixed guide rail (61) is slidably mounted with a movable slider (62). The movable slider (62) is equipped with a locking mechanism. The fixed guide rail (61), the movable slider (62) and the locking mechanism together form a locking guide rail slider pair. The movable slider (62) is fastened with a positioning pin mounting seat (63), and the end cap positioning pin (8) is mounted on the positioning pin mounting seat (63).

4. The positioning jig applied to the laser welding of the motor end cover according to claim 1, characterized in that: The lower end of the auxiliary pressure rod (4) is provided with a downward-opening pressure rod alignment hole (41).

5. The positioning fixture for laser welding of motor end cover according to claim 1, wherein: The rotating disk (5) is rotatably mounted on the housing positioning mold (2) via an end face bearing.

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