CN202530121U - Quenching sensor for inner cavity of spherical housing - Google Patents

Abstract

The utility model discloses a quenching sensor for an inner cavity of a spherical housing, and belongs to the heat treatment field. The quenching sensor for the inner cavity of the spherical housing comprises a current-conducting plate and an effective circle, wherein the effective coil comprises a first turn of effective coil and a second turn of effective coil which are connected in series, and the outside surface shape of the effective coil is matched with the inner cavity shape of the spherical housing. According to the quenching sensor, a double turn structure is utilized by the effective coil, so that heating temperatures in the inner cavity of the spherical housing and the layer depth are uniform, cracks are not easy to happen, the debug time is reduced, the processing efficiency is improved, and the quality of the processed product is stable. The quenching sensor for the inner cavity of the spherical housing has the advantages of being high in heat efficiency and favorable for energy conservation; and an inducing coil of the sensor is not easy to burn, and the service life of the sensor is improved.

Description

Spherical shell inner chamber quenching inducer

Technical field

The utility model relates to a kind of quenching inducer, particularly a kind of spherical shell inner chamber quenching inducer.

Background technology

Being connected of CV joint and axostylus axostyle in vehicle (especially in the medium and high-grade car field) drive axle is the key component of the transmission axial workpiece of high speed rotating, and the intensity and the wear resistance requirement of CV joint are high, directly affect the work-ing life of bearing.Therefore CV joint inner chamber need use spherical shell inner chamber quenching inducer to carry out quench treatment.

Existing spherical shell inner chamber quenching inducer comprises conducting plates and coil, and said coil is the single turn structure.

When adopting the spherical shell inner chamber quenching inducer of this kind structure to heat-treat; Because the layer depth of CV joint inner chamber is inhomogeneous; Need the frequent relative position of adjusting inductor block and workpiece for obtaining uniform layer depth with the elimination quenching crack, the initial failure period of production is longer, and working (machining) efficiency is lower.

The utility model content

In order to overcome the low problem of working (machining) efficiency that above-mentioned prior art exists, the utility model embodiment provides a kind of spherical shell inner chamber quenching inducer.Said technical scheme is following:

A kind of spherical shell inner chamber quenching inducer; Comprise conducting plates and coil; Said coil comprises the first circle coil and the second circle coil, and said first circle coil and the said second circle coil are connected in series, and the external surface shape of said coil and the cavity shape of spherical shell match.

The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: compare prior art; The coil of the said spherical shell inner chamber of the utility model quenching inducer adopts two circle structures; Heating temperature and layer depth are more even everywhere to make the spherical shell inner chamber; Be not prone to crackle, reduced initial failure period, improved working (machining) efficiency; Because the coil of the utility model distributes big than prior art at the inductance of whole inductor block, the efficient of whole inductor block is also just high than prior art, and the thermo-efficiency height helps energy-conservation; The electric current of the utility model is little, and thermal value is also just little, the inducing coil of easy burn-out inductor block not, the work-ing life of having improved inductor block.

Therefore, the utility model improves working (machining) efficiency for reducing initial failure period, and prolonging frock has positive effect work-ing life, and it is a kind of inner chamber heating installation of efficient stable, is specially adapted to the long workpiece of this heated length of CV joint inner chamber.

Description of drawings

In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the stereographic map of the said spherical shell inner chamber of the utility model embodiment quenching inducer;

Fig. 2 is the front view of the said spherical shell inner chamber of the utility model embodiment quenching inducer;

Fig. 3 is the A-A sectional view among Fig. 2;

Fig. 4 is the CV joint depth of hardening zone comparison diagram afterwards of heat-treating that adopts the utility model and prior art.

Each symbolic representation implication is following among the figure:

1 conducting plates,

2 coils, the 2A first circle coil, the 2B second circle coil,

The said spherical shell inner chamber of 10 the utility model quenching inducer, 20 spherical shell inner chamber quenching inducers of the prior art, 30CV joint.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.

The principle of design of the utility model:

Inductor block comprises conducting plates and coil.Therefore wherein, conducting plates is the equipment interface of standard, and coil is the heats that structure has directly determined workpiece, is to be based upon in the optimization of coil to the technological improvement of inductor block.

According to the making experience of inductor block, the length of run of coil and the length ratio of conducting plates are bigger, and the power that coil can be assigned to just the more.Therefore when one timing of conducting plates length, increase, should adopt the multiturn inductor block for making the coil length of run.

The relation of the inductance L 1 of inductor block coil and heated parts is following:

L1＝4πl1a/g

Wherein:

L1---inductance,

L1---coil length (cm),

A---coil and workpiece gap,

G---inductor block coil width.

For increasing the coil inductance, should increase l1, reduce g.As increase a, and though increased the coil inductance, having reduced inductor block efficient, can not take.Reduce g the heating zone is narrowed down, can not take.Therefore generally take to increase the method for l1/g ratio.L1/g should be between 5-10, when less than 5 the time, uses multiturn instead.L1=π dn during multiturn (wherein n is the number of turn).So the heated length (coil width) of CV joint workpiece and the interface size of inductor block, it is very suitable having determined to use two circle inductor blocks.

Shown in Fig. 1-3; The said a kind of spherical shell inner chamber quenching inducer of the utility model; Comprise conducting plates 1 and coil 2; Said coil 2 comprises the first circle coil 2A and the second circle coil 2B, and said first circle coil 2A and the said second circle coil 2B are connected in series, and the external surface shape of said coil 2 and the cavity shape of spherical shell match.

As shown in Figure 3, during practical implementation, the design difficulty of the utility model is: Design of Cooling System, and how the combination of two pipelines accomplishes the complete profiling of interior molded dimension with workpiece.

The cooling line of the utility model:

Because inductor block self also has very big thermal value in heat-processed; Therefore Design of Cooling System is one of key factor of the utility model length in work-ing life with making; Through calculating rational wall thickness of pipeline and long-width ratio, the cooling line structure of the utility model is as shown in Figure 3.

The external form of the utility model;

As shown in Figure 3, the coil of the utility model is to be combined into by upper and lower two copper pipes, and the external surface shape of coil is a circular shape shown in Figure 3, the heating uniformity of the profiling degree direct influence CV joint inner chamber of circular arc.

The beneficial effect detailed analysis of the utility model is following:

1. employing the utility model, Heating temperature and layer depth are more even everywhere to make workpiece, are not prone to crackle, have reduced initial failure period, have improved the stability of product, have improved working (machining) efficiency.

Particularly, as shown in Figure 4, that CV saves that 30 left sides show is the depth of hardening zone figure when adopting the said spherical shell inner chamber of the utility model quenching inducer 10, the depth of hardening zone figure that CV saves 30 right sides when adopting spherical shell inner chamber quenching inducer 20 of the prior art.

Referring to the right side of Fig. 4 CV joint 30, the layer depth that saves 30 inner chambers owing to CV is inhomogeneous, and repelling each other in the same way at electric current; Under the incorgruous effect of inhaling mutually, highly bigger loop inductor is a spherical shell inner chamber quenching inducer 20 of the prior art, at A; B; The current density that C is 3 is Jc＜Ja=Jb, is guaranteeing under the prerequisite that the corresponding C of workpiece place layer depth meets the demands the thicker crackle that very easily occurs of workpiece two ends layer depth; Need the frequent relative position of adjusting inductor block and workpiece for obtaining uniform layer depth with the elimination quenching crack, increased the initial failure period of producing.

Left side referring to Fig. 4 CV joint 30; When adopting the said spherical shell inner chamber of the utility model quenching inducer 10, said inductor current density Jd ≈ Je ≈ Jf ≈ Jg, D, E, F, G Heating temperature and layer depth everywhere are more even; Be not prone to crackle, reduced initial failure period.

2. adopt the thermo-efficiency of the utility model high, save the energy.

Because the coil of the utility model distributes big than prior art at the inductance of whole inductor block, the efficient of whole inductor block is also just high than prior art, and the thermo-efficiency height helps energy-conservation.

3. adopt the not inducing coil of easy burn-out inductor block of the utility model, the work-ing life of having improved inductor block.

Because the circle height of inductor block is high nearly 2 times of the utility model circle in the prior art; When the heating power of setting was identical, the current density on the prior art inductor block was 1/2 of the utility model inductor block, and heating efficiency also is proximate 1/2; Under the prerequisite that does not reduce productive temp; The electric current that prior art needs is 2 times of the utility model, so the utility model is more little through the electric current of inductor block, and the thermal value of self is also just more little; The inducing coil of easy burn-out inductor block not, the work-ing life of having improved inductor block.

In sum, the utility model improves working (machining) efficiency for reducing initial failure period, and prolonging frock has positive effect work-ing life.

The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (1)

1. spherical shell inner chamber quenching inducer; Comprise conducting plates and coil; It is characterized in that; Said coil comprises the first circle coil and the second circle coil, and said first circle coil and the said second circle coil are connected in series, and the external surface shape of said coil and the cavity shape of spherical shell match.

Images