CN212894816U

CN212894816U - Induction heating device for inner surface of besides-star wheel part

Info

Publication number: CN212894816U
Application number: CN202021893586.6U
Authority: CN
Inventors: 吴珩; 乔峰; 李冰; 徐杰
Original assignee: Shanghai GKN Huayu Driveline Systems Co Ltd
Current assignee: Shanghai GKN Huayu Driveline Systems Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-04-06
Anticipated expiration: 2030-09-01

Abstract

The utility model relates to an induction heating device of besides-star wheel part internal surface for install and heat in the besides-star wheel part inner chamber, induction heating device includes the induction coil, the induction coil includes the ring core and twines the coil on the ring core, the induction coil is three at least, and according to the mutual parallel of multilayer mode and coaxial line setting, and the centre has a middle induction coil that is located the lane intermediate position department of besides-star wheel part, all insulate each other between the induction coil, the outside profile of induction coil is the profile arc surface corresponding with the interior sphere of besides-star wheel part, and the profile arc surface of all induction coils forms the arc surface wholly, the profile arc surface middle part of middle induction coil is relative with the lane intermediate position.

Description

Induction heating device for inner surface of besides-star wheel part

Technical Field

The utility model relates to a mechanical structure heating field, concretely relates to induction heating device of outer star gear part internal surface.

Background

The automobile waiting speed transmission shaft product is an important part on a vehicle, torque rotating at high speed needs to be transmitted when the automobile waiting speed transmission shaft product is used, high-speed friction is borne when the automobile waiting speed transmission shaft product is used, in order to achieve the working strength of the part and prolong the service life of the transmission shaft, the inner surface of the transmission shaft part is generally subjected to quenching treatment, and the strength and the wear resistance of the inner surface of the transmission shaft part are improved through the quenching treatment.

To extend the useful life of the drive shaft, the inner surfaces of the besides-star wheel parts need to be heat treated for induction hardening. Original induction heater all adopts two rings of inductors about to heat and quenches, see fig. 1 and fig. 2, two rings of inductors about this kind, need insulating because of in the middle of the lower circle, there is 1 to 2 millimeters clearance in the middle of upper circle and the lower circle, this clearance position corresponds at lane intermediate position 16, the no magnetic field of clearance department sends, it is inhomogeneous to lead to the induction heating magnetic field of outer star wheel part internal surface, cause the lane intermediate position heating temperature not enough, make interior sphere quench hardening layer 14 and lane quench hardening layer 16 all appear the problem that the hardened layer is slightly shallow in lane intermediate position 16 department, see fig. 2, thereby it is not good to lead to whole quench hardening layer depth homogeneity. In addition, as the SX star wheel part has a special structure with A, B ball tracks in the inner cavity, the two-turn sensor cannot take into account the shapes of the two ball tracks, which results in larger difference of the ball tracks on the two sides.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the problem to be solved by the present invention is to provide an induction heating device for the inner surface of an besides-star wheel part, which can simultaneously and uniformly heat the inner surface of the part, thereby ensuring the quality of a quench-hardened layer.

In order to achieve the above object, the utility model provides an induction heating device of besides-star wheel part internal surface for install and heat in the besides-star wheel part inner chamber, induction heating device includes the induction coil, the induction coil includes the ring core and twines the coil on the ring core, the induction coil is three at least, and according to multilayer mode parallel to each other and coaxial line setting, and the centre has a middle induction coil that is located the lane intermediate position department of besides-star wheel part, all insulate each other between the induction coil, the outside profile of induction coil is the profile arc surface corresponding with the interior sphere of besides-star wheel part, and the profile arc surface of all induction coils forms the arc surface wholly, the profile arc surface middle part of middle induction coil is relative with the lane intermediate position.

Further, the induction coils are at least three and are arranged according to an upper layer, a middle layer and a lower layer.

Furthermore, the induction coil comprises a cooling pipe system, wherein a circular ring core in the induction coil is a circular ring copper pipe, and the cooling pipe system comprises a water inlet copper pipe and a water outlet copper pipe which are connected with the circular ring copper pipe.

Further, a gap is formed between every two adjacent induction coils, and an insulation sheet is arranged in the gap.

Furthermore, the induction heating device also comprises a cylindrical magnetizer, and the induction ring is sleeved on the magnetizer

The induction quenching device comprises a holder, wherein the holder comprises a connecting copper bar and a bracket, the connecting copper bar is used for connecting an induction coil and induction quenching equipment, and the induction coil is arranged on the bracket.

Furthermore, a ball path boss is arranged in the inner cavity of the besides-star wheel part, and a concave structure opposite to the ball path boss is arranged on the profiling arc surface of the induction coil.

The utility model relates to an induction heating device has following beneficial effect:

through setting up a plurality of induction coils that have the profile modeling arc surface, during the use, induction heating device puts into outer star wheel part inner chamber, and the central axis of induction coil all keeps basic collineation with the central axis of outer star wheel part to make middle induction coil be located lane intermediate position department high department, the profile modeling arc surface of all induction coils is roughly the same with the distance of interior sphere, then the induction coil is all switched on, carries out induction heating to whole interior sphere. For current design, because the magnetic field intensity that induction heating device's middle induction coil produced in lane intermediate position department, satisfy the heating requirement on lane intermediate position department quench hardening layer, move the clearance between the induction coil to lane intermediate position top and bottom, the weaker magnetic field of clearance department is used for heating lane intermediate position top and below region, satisfy the heating needs, it is more even to make the whole heating of lane, quench hardening layer homogeneity is better, especially can avoid the quench hardening layer of lane central position department to appear the shallow layer, high production efficiency, easily the quality control of actual quenching.

Drawings

Fig. 1 is a schematic view of the construction of an outer star wheel element.

Fig. 2 is a schematic diagram of the operation of an induction heater of a prior art design.

Fig. 3 is a schematic structural view, partially in section, of an induction heating apparatus according to the present invention.

Fig. 4 is a schematic structural diagram of a side surface of the induction heating apparatus according to the present invention, which is partially cut away.

Fig. 5 is a schematic diagram of the induction heating apparatus according to the present invention.

Description of the element reference numerals

1 besides star wheel parts

11 fairway surface

12 inner spherical surface

13 fairway boss

14 inner spherical quench-hardened layer

15 ball road surface quench hardening layer

16 fairway middle position

2 induction coil

21 profile arc surface

22-recessed structure

3 gap

4 magnetic conductor

5 Cooling piping

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

The utility model provides an induction heating device of besides-star wheel part internal surface, a heat in 1 inner chamber of besides-star wheel part for install, refer to fig. 3, fig. 4 and fig. 5, induction heating device includes induction coil 2, induction coil 2 includes the ring core, and the coil of winding on the ring core, induction coil 2 is three at least, and be parallel to each other and coaxial line setting according to the multilayer mode, and the centre has an intermediate induction coil that is located the lane intermediate position 16 department of besides-star wheel part 1, all insulate each other between induction coil 2, induction coil 2's outside profile is the corresponding arc surface 21 of interior sphere 12 with the outside-star wheel part 1, and the profile arc surface 21 whole of all induction coils forms the arc surface, the profile arc surface 21 middle part of intermediate induction coil is relative with lane intermediate position 16. In fig. 3, 4 and 5, the induction coil 2 is a half sectional view.

The utility model relates to an induction heating device, its basic operating principle does: during the use, see figure 5, the central axis of outer star wheel part 1 is vertical, and induction heating device puts into outer star wheel part 1 inner chamber, and the central axis of induction coil 2 all keeps the collineation basically with the central axis of outer star wheel part 1 to make middle induction coil be located 16 high departments of lane intermediate position, 2 quantity of induction coil above the middle induction coil and below set up according to actual need, and every induction coil 2 can be the same or can be different along the thickness size of upper and lower direction. The outer side profile of the induction coil 2 faces the inner surface of the outer star wheel part 1, the outer side profiles of the induction coils 2 at different positions are designed in a copying mode according to the shape radian of the position of the inner spherical surface 12 to be corresponding to the outer side profiles, the copying arc surfaces 21 of all the induction coils 2 are integrally formed into an arc surface to be matched with the inner spherical surface 12 of the outer star wheel part 1, therefore, the distances between the copying arc surfaces 21 of all the induction coils 2 and the inner spherical surface 12 are approximately the same, then the induction coils 2 are electrified to perform induction heating on the whole inner spherical surface 12, the induction heating principle of the induction coils 2 is known, and the description is omitted here. Besides, the outer star wheel part 1 rotates at a high speed when being heated, so that the heating layer in the circumferential direction is uniform, particularly, the middle position 16 of the lane heats the inner spherical surface 12 and the lane surface 11 at the middle position 16 of the lane through the middle induction coil, and the problem that the heating is not uniform due to the fact that the gap 3 between the induction coils 2 corresponds to the middle position 16 of the lane is avoided.

Because the central position 16 of the lane is the main stressed area of the besides-star wheel part 1, the thickness requirement of the quench-hardened layer is high, the wall thickness of the central position 16 of the lane is thin and is not easy to be inductively heated, the wall thickness of the areas above and below the central position 16 of the lane is thick and is easy to be inductively heated, and the thickness requirement of the quench-hardened layer is lower than that of the central position 16 of the lane. The utility model discloses an induction heating device, for current design, because induction heating device's middle induction coil is strong in the magnetic field that lane intermediate position 16 departments produced, satisfy the heating requirement on lane intermediate position 16 department quench hardening layer, move 3 in the clearance between induction coil 2 to lane intermediate position 16 below, 3 less strong magnetic fields in clearance are used for heating lane intermediate position 16 top and below region, satisfy the heating needs, make the global heating of lane more even with this, quench hardening layer homogeneity is better, especially can avoid the quench hardening layer of lane central position department to appear the shallow layer, high production efficiency, the quality control of easy actual quenching.

Referring to fig. 3 to 5, the induction heating apparatus of the present invention will be further described with reference to an embodiment.

Referring to fig. 3 to 5, in the present embodiment, the number of the induction coils 2 is three, and the induction coils are arranged in three layers, namely, an upper layer induction coil 2, a middle layer induction coil, a lower layer induction coil 2, and a bottom induction coil 2. As preferred design, induction heating device still includes cooling piping 5, and the ring core in the induction coil 2 is the ring copper pipe, and cooling piping 5 includes the copper pipe of intaking that links to each other with the ring copper pipe and goes out the water copper pipe, conveniently in time dispels the heat to induction coil 2 in heating work, and work is more reliable and more stable. The circular copper tubes in the three induction coils 2 can be separately filled with water or can be serially connected to be filled with water, but when the three induction coils 2 are serially connected, the three induction coils 2 are required to be insulated, the connection between the circular copper tubes is required to be insulated, and the internal cooling liquid is also insulated.

In this embodiment, referring to fig. 3 to 5, the induction heating apparatus further includes a cylindrical magnetizer 4, the three induction coils 2 are sleeved on the magnetizer 4, a gap 3 is formed between two adjacent induction coils 2, and an insulating sheet is disposed in the gap 3, so that insulation between two adjacent induction coils 2 is ensured, and a short circuit of current between the induction coils 2 is prevented. Through setting up magnetizer 4, the induction heating effect to the spare part internal surface of multiplicable induction coil 2 to, for the mode that adopts the silicon steel sheet in the existing design, magnetizer 4 does not have the neutral between two induction coils 2 to this can increase the magnetic field in 3 departments in the clearance between two induction coils 2, thereby further improves induction coil 2 and transmits the homogeneity of the magnetic field intensity of outer star gear part 1.

The utility model discloses an induction heating device still includes a holder (not shown in the drawing), and the holder is including hookup copper bar and support, and the hookup copper bar is used for connecting induction coil 2 and induction hardening equipment, supplies power, and induction coil 2 installs on the support, and the support is used for guaranteeing that induction coil 2 is indeformable at heating during operation.

For the SX-type outer star wheel part 1, a lane boss 13 is provided in the inner cavity, referring to fig. 5, for an induction heating device for heating the SX-type outer star wheel part 1, it is preferable that the profiling arc surface 21 of the induction coil 2 is provided with a recessed structure 22 opposite to the lane boss 13, particularly in the embodiment, referring to fig. 5, the recessed structure 22 is correspondingly arranged on the profiling arc surface 21 of the induction coil 2 at the upper layer and the middle layer, and the shape and the position of the recessed structure 22 are arranged according to the shape and the position of the lane boss 13, so as to ensure that the distance between the profiling arc surface 21 of the induction coil 2 and the inner surface of the outer star wheel part 1 is kept uniform.

By last knowing, induction heating device in this embodiment, through setting up three-layer induction coil 2, utilize middle induction coil to heat ball way central point department, it is regional to top and below to remove the 3 less strong clearances in induction field, the realization heats simultaneously uniformly 1 internal surface of outer star gear part along its central axis vertically, the uniformity of case hardening layer is better, production efficiency improves, in the quenching heating process, can simplify heating program parameter, only need set for heating position, heating time, heating power, the quality control of actual quenching is more reliable.

To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

Claims

1. The utility model provides an induction heating device of outer star gear part internal surface for install and heat in outer star gear part (1) inner chamber, induction heating device includes induction coil (2), induction coil (2) include the ring core and the coil of winding on the ring core, its characterized in that: the induction coil (2) are at least three, and according to the mutual parallel and coaxial line setting of multilayer mode, and the centre has the middle induction coil that is located lane intermediate position (16) department of outer star wheel part (1), all insulate each other between induction coil (2), the outside profile of induction coil (2) is for the profile arc face (21) corresponding with interior sphere (12) of outer star wheel part (1), and profile arc face (21) of all induction coils (2) form the arc face wholly, the profile arc face (21) middle part and the lane intermediate position (16) of middle induction coil are relative.

2. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: the number of the induction coils (2) is at least three, and the induction coils are arranged according to an upper layer, a middle layer and a lower layer.

3. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: still include cooling piping (5), the ring core in induction coil (2) is the ring copper pipe, cooling piping (5) are including the copper pipe of intaking and the copper pipe of going out that links to each other with the ring copper pipe.

4. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: a gap (3) is arranged between two adjacent induction coils (2), and an insulation sheet is arranged in the gap (3).

5. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: still include a cylindric magnetizer (4), induction coil (2) cover is established on magnetizer (4).

6. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: the induction quenching device is characterized by further comprising a retainer, wherein the retainer comprises a connecting copper bar and a support, the connecting copper bar is used for connecting the induction coil (2) and the induction quenching device, and the induction coil (2) is installed on the support.

7. An induction heating apparatus for an inner surface of an besides-star wheel member as set forth in claim 1, wherein: a lane boss (13) is arranged in the inner cavity of the outer star wheel part (1), and a concave structure (22) opposite to the lane boss (13) is arranged on the profiling arc surface (21) of the induction coil (2).