CN213318278U - Special resistance spot welding tool based on stator punching sheet group - Google Patents

Abstract

The utility model discloses a special frock of resistance spot welding based on stator punching sheet group relates to resistance spot welding frock technical field, has solved current stator punching sheet group fixing device and can't be with four towards reliable, accurate fixed good problems with special frock of piece. A special resistance spot welding tool based on a stator punching sheet group comprises a tray; the tray is sleeved and fixed on the top of the vertical pipe by an integrated thick-wall sleeve. The device has realized the cell type location to stator punching sheet group through the navigation key, can be accurate with every stator punching sheet in the stator punching sheet group through three navigation key, stable fixing, and the tray pushes up, the integrative navigation key that stretches out of the navigation disc of core can be stable, reliable supporting location, make the navigation key can occupy the stator cell type basically, area of contact is big, it is fixed as a set of to realize accurate, firm, reliable with many stator punching sheets, the stability and the practicality of the device have been improved, the product quality of spot welding stator punching sheet group has been guaranteed.

Description

Special resistance spot welding tool based on stator punching sheet group

Technical Field

The utility model belongs to the technical field of resistance spot welding frock, more specifically say, in particular to special frock of resistance spot welding based on stator punching sheet group.

Background

The resistance spot welding utilizes a spot welding machine to perform fixed-point welding on the tooth part of the punching sheet group, and a plurality of punching sheets can be welded and molded into the punching sheet group which is orderly arranged. The resistance spot welding has the characteristics of high efficiency, firm welding, small deformation and the like.

In the manufacturing process of the stator core of the wind driven generator, four stator laminations are required to be spot-welded together according to the requirements of a drawing to form a whole, and the size of the stator laminations is ensured to be completely the same as that of a single lamination. When the punching sheet group is subjected to resistance spot welding, the four punching sheets bear current, pressure and high temperature to ensure that the four punching sheets are consistent in groove shape and are welded into a whole in order.

When the existing stator punching sheet group is welded, the stator punching sheet group needs to be fixed firstly, the inner diameter of the stator punching sheet is large, and the inner circle formed by a seventy two-tooth disconnection arc line is formed, the tooth end part is easy to deform by positioning the traditional fixing device by the inner circle, so that the material is damaged, and the traditional fixing device cannot reliably and accurately fix four punching sheets by using a special tool, so that the quality of the welded stator punching sheet group cannot be ensured, the unevenness of the welded stator punching sheet group cannot meet the quality standard requirement, the subsequent grinding is needed, the materials and the labor are wasted, and the practicability is not high.

In view of the above, research and improvement are made in view of the existing structure and defects, and a tool dedicated for resistance spot welding based on a stator punching sheet group is provided in order to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a special frock of resistance spot welding based on stator punching sheet group, in order to solve current stator punching sheet group when the welding, need fix stator punching sheet group earlier, because the stator punching sheet internal diameter is great, and be the interior circle that the seventy two-tooth disconnection pitch arc formed, traditional fixing device makes tooth tip warp easily by interior circle location, cause the damage of material, and traditional fixing device can't be reliable with four towards the piece, accurate fixed with special frock, thereby can't guarantee stator punching sheet group quality after the welding, lead to stator punching sheet group to weld the back and can't reach the quality standard requirement, still need carry out follow-up coping, material and manual work have been wasted, the not high problem of practicality.

The utility model discloses purpose and efficiency of special frock of resistance spot welding based on stator punching sheet group are reached by following specific technological means:

1. a special fixture for resistance spot welding based on a stator punching sheet group comprises a base, a tray and a centering disc with a bearing, wherein a three-jaw positioning key integrally extends out of an outer circle and has an included angle of 120 degrees; the top of the base is fixedly connected with a vertical pipe; the tray is sleeved and fixed on the top of the outer wall of the vertical pipe by an integral thick-wall sleeve; the bearing is fixedly connected to the top end of the inner wall of the vertical pipe.

Furthermore, the tray is made of steel plate materials, and the shape of the tray is flat and round.

Furthermore, the plate body of the tray is provided with a welding window with the length of 150 mm and the width of 30 mm, and the welding window is designed at the welding position of the stator punching sheet group.

Further, the top surface of tray is equipped with the diameter and is 235 millimeters centering dish, the inside of centering dish is equipped with the dabber, and the axis body fixed connection of dabber can be steady rotation on the tray top surface at the inner circle of bearing.

Furthermore, the outward flange of centering dish, integrative three-jaw navigation key that stretches out, and the navigation key contained angle is 120 degrees, evenly distributed's three, the width of navigation key is the same with the stator groove type width of stator punching, and the height of navigation key is 15 millimeters.

Compared with the prior art, the utility model discloses following beneficial effect has:

firstly, the tray can be leveled reliable and hold the stator punching sheet group that needs the welding for stator punching sheet group carries out welding construction through the welding window, and the tray adopts steel sheet material to make, can bear high temperature and can not warp, can make the stator punching sheet group at tray top remain all the time and weld through the welding window on the horizontal plane, has improved the device's stability, reliability.

Secondly, the device has realized the cell type location to stator punching sheet group through the navigation key, can be accurate, stable fixing every stator punching sheet in the stator punching sheet group through three navigation key, and the centering dish at tray top can be stable guarantee the intensity, the precision and the rotation of navigation key for the navigation key can occupy the stator cell type basically, and area of contact is big, realizes that accurate, firm, reliable fixes many stator punching sheets as a set of, has improved the device's stability and practicality.

Moreover, when welding stator punching sheet group, accessible dabber is at the bearing internal rotation can make centering dish and navigation key drive stator punching sheet group and rotate at the top surface of tray to weld the corresponding position of stator punching sheet group through welding the window, convenient flexibility has improved the device's flexibility and adaptability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic structural view of the tray of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a base; 2. a riser; 3. a tray; 4. a bearing; 301. welding the window; 302. a centering plate; 3021. a positioning key; 3022. and (3) a mandrel.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 3:

the utility model provides a special tool for resistance spot welding based on a stator punching sheet group, which comprises a base 1, a tray 3 and a bearing 4; the top of the base 1 is fixedly connected with a vertical pipe 2; the tray 3 is sleeved and fixed on the top of the outer wall of the vertical pipe 2 by an integral thick-wall sleeve; the tray 3 is made of a steel plate material, and the tray 3 is flat and round in shape, as shown in the attached drawing 3, the steel plate material can bear high temperature and cannot deform, so that the stator punching sheet group at the top of the tray 3 can be always kept on a horizontal plane for welding, and the stability of the device is improved; a welding window 301 with the length of 150 mm and the width of 30 mm is arranged on the plate body of the tray 3 and is designed at the welding position of the stator punching sheet group, as shown in fig. 3, the design enables the stator punching sheet group to be welded by rotating the part to be welded to the welding window on the top surface of the tray 3; the bearing 4 is fixedly connected to the top end of the inner wall of the vertical pipe 2.

Wherein, the top surface of the tray 3 is provided with a centering disc 302 with the diameter of 235 mm, the inside of the centering disc 302 is provided with a mandrel 3022, and the shaft body of the mandrel 3022 is fixedly connected with the inner ring of the bearing 4 and can rotate stably on the top surface of the tray 3; as shown in fig. 2 and fig. 3, the centering disc 302 can be fixedly connected to the inner ring of the bearing 4 through the mandrel 3022 to rotate, so that the three-jaw positioning key 3021 of the centering disc 302 drives the stator punching sheet set to rotate on the top surface of the tray 3, and the corresponding part of the stator punching sheet set is welded at the welding window by the resistance welding machine, which is convenient and flexible, and improves the flexibility and adaptability of the device.

Wherein, the outward flange of centering disc 302, integrative three-jaw positioning key 3021 that has stretched out, and positioning key 3021 is equipped with threely, positioning key 3021's width is the same with the stator cell type width of stator punching, and positioning key 3021 contained angle is 120 °, evenly distributed three, highly is 15 millimeters, as shown in fig. 3, the device has realized the cell type location to stator punching through positioning key 3021, can be accurate, stable fixing to every stator punching in the stator punching through three positioning key 3021, and the integrative positioning key 3021 that can be stable, reliable support the location of centering disc 302 outward flange at tray 3 top for positioning key 3021 can occupy the cell type of stator punching basically, and area of contact is big, realizes accurate, firm, reliable fixing a plurality of stator punching as a set, has improved the device's stability and practicality.

The specific use mode and function of the embodiment are as follows:

in the utility model, the stator punching sheets of the stator punching sheet group are sequentially arranged at the top of the tray 3, the device realizes the groove type positioning of the stator punching sheet group through the three positioning keys 3021, each stator punching sheet in the stator punching sheet group can be accurately and stably fixed through the three positioning keys 3021, and the positioning disc 302 at the top of the tray 3 and the three positioning keys are integrated into a stable supporting positioning key 3021, so that the three positioning keys 3021 can basically occupy the groove type of the stator punching sheets, the contact area is large, the fixing of a plurality of stator punching sheets into a group can be accurately, firmly and reliably realized, when in welding, the positioning disc 302 can rotate in the bearing 4 through the mandrel 3022, the three positioning keys 3021 on the positioning disc 302 can drive the stator punching sheet group to rotate on the top surface of the tray 3, the position needing to be welded is rotated to the welding window position to be welded through the spot welding machine, spot welding is carried out on each tooth of the stator punching sheet group to manufacture a 'neatly-divided' stator punching sheet group; the operation is convenient and flexible; tray 3 is made for the steel sheet material, and the steel sheet material can bear high temperature and can not warp, can make the stator punching sheet group at tray 3 top remain all the time and weld on the horizontal plane, takes off stator punching sheet group after the welding is accomplished, and it can to continue to place unwelded stator punching sheet group and weld.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (5)

1. The utility model provides a special frock of resistance spot welding based on stator punching sheet group which characterized in that: comprises a base (1), a tray (3) and a bearing (4); the top of the base (1) is fixedly connected with a vertical pipe (2); the tray (3) is sleeved and fixed on the top of the outer wall of the vertical pipe (2) by an integral thick-wall sleeve; the bearing (4) is fixedly connected to the top end of the inner wall of the vertical pipe (2).

2. The stator punching sheet group-based special tool for resistance spot welding according to claim 1, wherein: the tray (3) is made of steel plate materials, and the shape of the tray (3) is flat and round.

3. The stator punching sheet group-based special tool for resistance spot welding according to claim 1, wherein: the plate body of the tray (3) is provided with a welding window (301) which is 150 mm long and 30 mm wide, and the welding window (301) is designed at the welding position of the stator punching sheet group.

4. The stator punching sheet group-based special tool for resistance spot welding according to claim 1, wherein: the top surface of tray (3) is equipped with diameter and is 235 millimeters centering dish (302), the inside of centering dish (302) is equipped with dabber (3022), and the axis body fixed connection of dabber (3022) is at the inner circle of bearing (4), can be on the top surface of tray (3) steady rotation.

5. The stator punching sheet group-based special resistance spot welding tool as claimed in claim 4, wherein: the outward flange of centering dish (302), an organic whole stretches out three-jaw navigation key (3021), and navigation key (3021) contained angle be 120 °, evenly distributed's three, the width of navigation key (3021) is the same with the stator groove type width of stator punching, and the height of navigation key (3021) is 15 millimeters.

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