Self-spraying type inner hole high-frequency continuous induction quencher

Abstract

The utility model discloses a self-spraying type inner hole high-frequency continuous induction quencher, which comprises a busbar, a sensing body, a magnetizer, a fixing clamp, an isolation plate, a cooling medium access pipe and a centering shaft, and one end of the busbar is welded with a polar plate; the other end is welded with the sensing body; the magnetizer is an II-shaped flow driving action part made of ferrite and is fixedly connected through glue; the isolation plate is made of an insulating thin plate, is inserted between the two confluence plates and is wound and bundled by a mica tape; the fixing clamp is made of pine or Chinese fir and embedded between the magnetizer and the sensing body, one end of the cooling medium access pipe is welded through a busbar, and the other end of the cooling medium access pipe is filled with a cooling medium. The induction quenching device is continuous in induction quenching, uniform in induction layer depth and free of local soft spots, parts do not deform, and the quality of quenched parts is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of self-spraying type inner hole high-frequency continuous induction quenching device, specifically to a kind of shaft sleeve class part is carried out continuous induction self-spraying type cooling quenching to inner spline. BACKGROUND

[0002] Spline coupling is a common coupling mode of mechanical transmission. Among them, the spline sleeve is an internal spline, and the spline shaft is an external spline. A longitudinal keyway is processed in the inner hole of the spline sleeve, which is matched with the spline of the spline shaft to realize the synchronous rotation of the two through spline coupling. Therefore, the spline is the key stress part of power transmission. To ensure the reliable connection of the spline, high-strength alloy steel is used to manufacture high-strength spline sleeve parts, and after quenching and tempering treatment, the spline part is locally induction hardened. SUMMARY

[0003] To solve the above problems, the utility model provides a kind of self-spraying type inner hole high-frequency continuous induction quenching device.

[0004] The technical scheme for solving the above problems of the utility model is: a kind of self-spraying type inner hole high-frequency continuous induction quenching device, including busbar, induction body, magnet conductor, fixed clamp, isolation plate, cooling medium access pipe, centering shaft, busbar one end is welded with polar plate;The other end is welded with induction body;Magnet conductor is made of Ⅱ-shaped current driving part of ferrite, is fixed by glue;Isolation plate is made of insulating sheet, is inserted between two busbars and then is tied with mica tape;Fixed clamp is made of pine or fir, is embedded between magnet conductor and induction body, cooling medium access pipe one end busbar welding, the other end passes into cooling medium.

[0005] Further, the busbar is made of rectangular cross-section red copper copper pipe, and the shape is inverted L shape, one end is connected with the polar plate, the other end is connected with the induction body, and a hole with a diameter of 10-15 mm is processed near the connection position of the polar plate for accessing the cooling medium.

[0006] Further, the induction body is made of rectangular cross-section red copper copper pipe, and a part is L-shaped, the part is welded with the busbar, and the other part is wound into a circular ring shape. A small hole with a diameter of 1.5 mm is formed in the lower edge of the circular part of the induction body, and the angle is 30° downward to the cylindrical surface of the internal spline.

[0007] Further, the magnet conductor is made of ferrite, and the ferrite is square or strip-shaped ferrite shaped by wire cutting. The opening size is interference fit with the cross section of the induction body, and the fixed clamp made of fir or pine is embedded between the induction body and the magnet conductor.

[0008] Further, the lower end surface of the centering shaft is provided with equidistant radial grooves.

[0009] The utility model discious the beneficial effect is: adopt the utility model to the keyway is inducted quenching, inductive quenching is continuous, and the induction layer is deep and even, and there is no local soft point, and the part does not occur deformation, and the quality of keyway has been improved greatly. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure diagram of the utility model.

[0011] Figure 2 It is the explosion drawing of the utility model.

[0012] Figure 3 It is the structure diagram of the water spraying hole on the induction body in the utility model. DETAILED DESCRIPTION

[0013] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0014] As shown in the book 3, the utility model provides a kind of from spraying type inner hole high frequency continuous induction quenching device, including busbar 1, induction body 3, fixed clamp 4, magnet conductor 5, spline 6, cooling medium access pipe 7, polar plate 8, centering shaft 9, wherein polar plate 8 is each one piece left and right, each is designed with the through hole connected with quenching transformer, is fixed with quenching transformer connecting plate by bolt and nut;Busbar 1 is inverted L-shaped rectangular copper pipe, is welded with polar plate 8;Induction body 3 is also made of rectangular copper pipe, and is divided into two parts, one part is straight copper pipe, and the other part copper pipe is wound into circular ring, and the two parts of induction body 3 are welded and then connected with busbar 1;Magnet conductor 5 is made of Ⅱ-shaped current driving part of ferrite, is fixed by glue;Insulating plate (not shown in the drawing) is made of insulating sheet, is inserted between two busbars and then is wound and tied with mica tape;Fixed clamp 4 is made of pine or fir, is embedded between magnet conductor 5 and induction body 3, to prevent magnet conductor 5 from falling;Cooling medium access pipe 8 one end busbar welding, the other end passes into cooling medium.Process of operation: from spraying type inner hole continuous induction quenching device is connected with quenching transformer, simultaneously access cooling medium, and the spline sleeve to be handled is placed on automatic lifting platform, then lifting platform moves from bottom to top and drives part autorotation, simultaneously, power is started, and cooling medium is passed in, to realize the continuous induction quenching of from bottom to top continuous self-spraying type.

[0015] Polar plate 8 is made of brass plate with small resistance, and the thickness is about 5-10mm, and there are 2-3 threaded holes in each of the left and right two, and the threaded holes are fixedly connected with the power base of transformer by bolt and nut, and the two polar plates 8 simultaneously act as the support member of the entire quenching device to maintain the quenching device from mechanical deformation.

[0016] Busbar 1 is made of rectangular copper pipe, the shape is inverted L shape, one end is connected with the polar plate 8, the other end is connected with the inductor 3, the inner hole with diameter of 10-15mm is processed near the polar plate connection, which is used for accessing cooling medium, the number can be set 2-4 according to the cooling needs of quenching spline sleeve, inductor and busbar, in the same current density, the mechanical strength of rectangular copper pipe is higher than that of circular copper pipe, which is conducive to ensuring the accurate spacing of quenching inductor and internal spline, ensuring stable temperature field, at the same time, rectangular copper pipe is conducive to ensuring the spacing of busbar, reducing the inductance between busbars, avoiding energy loss and improving the heating speed of spline sleeve.

[0017] Cooling medium access pipe 7 is made of copper pipe with diameter of 10-15mm, the diameter and number are matched with the inner hole of busbar, and the cooling medium access pipe is fixed by welding, the sum of the cross section of the hole is about 1.2-1.5 times the sum of the cross section of the outlet hole of the inductor, on the one hand, the outlet medium of the inductor is sprayed to the surface of the quenching spline sleeve at a stable angle, flow and temperature (cooling water temperature or water-soluble medium is less than 40℃, oil temperature is less than 80℃), on the one hand, the spline sleeve is continuously quenched, on the other hand, the temperature rise of busbar 1, inductor 3 and magnetic conductor 5 is avoided, which improves the required current density of inductor 3 and ensures the mechanical strength of busbar 1 and inductor 3, ensures that the spacing between inductor 3, magnetic conductor 5 and spline 6 does not change during quenching, so as to establish stable magnetic induction intensity and temperature field.

[0018] A plurality of small holes 10 with diameter of 1.5mm are arranged at the lower edge of the circular part of inductor 3, the angle is 30° downward to the cylindrical surface of internal spline, which can prevent the cooling medium from splashing to the inductive part which has not reached the temperature, and can also prolong the contact time of the cooling medium with the part which has reached the temperature, so as to ensure the full transformation of quenching structure.

[0019] Magnetic conductor 5 is made of ferrite, the ferrite is shaped by wire cutting, the opening size is matched with the cross section of inductor 3, and then the inductor 3 is fixed and connected with inductor 3 by glue, then the fixed clamp 4 made of fir or pine wood is embedded between inductor 3 and magnetic conductor 5, which stabilizes the spacing between inductor 3 and internal spline, reduces the overflow of magnetic force strength generated by inductor 3, enhances the current driving effect, and has high thermal efficiency.

[0020] The centering shaft 9 is made of 45 steel, and a radial groove 11 for rapid outflow of cooling medium is arranged on the lower end surface to prevent the cooling medium from overflowing from the inside of the spline sleeve downward, and to avoid the cooling medium from cooling the surface which has not reached the temperature; the inner hole diameter of the lower end of the centering shaft is matched with the rotating boss cylindrical surface of the lifting platform, and the outer diameter of the upper end is matched with the diameter of the non-quenching surface of the lower end of the spline sleeve, so that the rotating center of the spline sleeve is the same as the center of the inductor applicator, the artificial placement error is reduced, the distance between the applicator and the spline sleeve is more reasonable, and the rotation of the rotating boss of the lifting platform makes the heating and cooling of each part of the cylindrical surface of the spline sleeve more uniform, and the quenching quality is further improved.

[0021] The assembling implementation process of the utility model is as follows: assembling the applicator 3, the busbar 1, the cooling medium access pipe 7, the polar plate 8 and the magnetic conductor 8 → wedging the fixing clamp 4 made of fir → inserting the busbar 1 and the applicator 3 into the middle of the access end of the insulating bakelite board, and binding with the mica tape → wedging the fixing clamp made of fir → fixing the quenching inductor on the quenching transformer through the bolt and the nut → placing the centering shaft on the lifting platform, and sleeving the spline sleeve into the centering shaft → accessing the cooling medium, checking whether the cooling medium injection is smooth, and whether the workbench lifting and rotating are normal → inductive heating quenching.

Claims

1. A self-bleeding high frequency induction quencher for internal bore, characterized in that, The busbar, the inductor, the magnetic conductor, the fixing clamp, the isolation plate, the cooling medium access pipe and the centering shaft are included. One end of the busbar is welded with the polar plate, and the other end is welded with the inductor. The magnetic conductor is made of Ⅱ-shaped current driving part of ferrite and is fixed by glue. The isolation plate is made of insulating sheet and is inserted between the two busbars and then is bound by mica tape. The fixing clamp is made of pine or fir and is embedded between the magnetic conductor and the inductor. One end of the cooling medium access pipe is welded with the busbar, and the other end is accessed by the cooling medium.

2. The self-erupting high frequency continuous in-hole induction quencher according to claim 1, characterized in that, The busbar is made of rectangular cross-section copper pipe, and its shape is inverted L-shaped. One end of the busbar is connected with the polar plate, and the other end is connected with the inductor. A hole with a diameter of 10-15 mm is processed near the connection position of the busbar and the polar plate, which is used for accessing the cooling medium.

3. The self-erupting high frequency in-hole induction quencher according to claim 1, wherein, The inductor is made of rectangular cross-section copper pipe. One part of the inductor is L-shaped and is welded with the busbar. The other part of the inductor is wound into a circular ring. 25-30 small holes with a diameter of 1.5 mm are opened at the lower edge of the circular part of the inductor, and the angle of the holes is downward 30°.

4. The self-erupting high frequency in-hole induction quencher according to claim 1, wherein The magnetic conductor is made of ferrite. The ferrite is square or strip-shaped ferrite which is linearly cut and shaped. The opening size of the ferrite is interference fit with the cross section of the inductor. The ferrite is fixed and connected with the inductor by glue. The fixing clamp made of fir or pine is embedded between the inductor and the magnetic conductor.

5. The self-erupting high frequency in-hole induction quencher according to claim 1, wherein The lower end surface of the centering shaft is provided with equidistant radial grooves.

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