CN115247226B - Equipment for metal part induction heat treatment - Google Patents
Equipment for metal part induction heat treatment Download PDFInfo
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- CN115247226B CN115247226B CN202211114889.7A CN202211114889A CN115247226B CN 115247226 B CN115247226 B CN 115247226B CN 202211114889 A CN202211114889 A CN 202211114889A CN 115247226 B CN115247226 B CN 115247226B
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- thimble
- sliding
- groove
- metal shaft
- sleeve
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of metal processing, in particular to equipment for induction heat treatment of metal parts, which comprises a loading platform, two coaxial thimbles, a rotary driver, a first mover, an induction coil, a second mover, a positioning sleeve and a forward and reverse rotation sliding guider, wherein the positioning sleeve is coaxially arranged on the thimbles in a sliding manner, and an inner conical surface which faces to the end part of a metal shaft and expands outwards is arranged on the positioning sleeve; the positive and negative rotation sliding guide is arranged between the positioning sleeve and the ejector pin and used for guiding the inner conical surface to move relative to the end part of the metal shaft after the ejector pin changes steering.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to equipment for induction heat treatment of metal parts.
Background
The heat treatment is a metal hot working process for obtaining expected structure and performance by means of heating, heat preservation and cooling in a solid state of a material, a metal shaft is used as a metal part, and heat treatment is needed after the metal shaft is processed to improve the wear resistance of the metal shaft.
Chinese patent CN111471849B relates to a rotary thimble for transmission shaft quenching; through setting up the axle core that is close to with distance sensor, drive the transmission shaft rotation through quenching equipment's drive thimble, thereby drive the rotation of axle core, this scheme is through setting up the cylinder of unfilled corner in the one end of axle core, the arc surface through the cylinder of unfilled corner is close to with distance sensor's inductive probe, when the rotation of axle core, the unfilled corner position is rotatory when to the inductive probe position, inductive distance is far away, thereby whether normal can judge the rotational speed of axle core through the time interval that the inductive probe of calculating distance sensor and the inductive distance of axle core response portion change.
The device can not accurately position the transmission shaft and the ejector pin when rotating.
Disclosure of Invention
Aiming at the problems, the equipment for the induction heat treatment of the metal parts is provided, and the problem that the metal shaft and the ejector pin need to be accurately and coaxially positioned is solved through the positioning sleeve and the positive and negative rotation sliding guide.
In order to solve the problems of the prior art, the invention adopts the technical scheme that:
the equipment for the induction heat treatment of the metal parts comprises a loading table, two coaxial ejector pins, a rotary driver, a first mover, an induction coil, a second mover, a positioning sleeve and a positive and negative rotation sliding guide, wherein the two coaxial ejector pins are arranged on the loading table and used for clamping a metal shaft; the positive and negative rotation sliding guide is arranged between the positioning sleeve and the ejector pin and used for guiding the inner conical surface to move relative to the end part of the metal shaft after the ejector pin changes and turns; the positioning sleeve comprises a sliding cylinder which is arranged on the thimble in a sliding manner, the sliding cylinder expands outwards towards the end part of the metal shaft to form an inner conical surface coaxial with the thimble, the processing equipment further comprises an elastic connector which is arranged on the thimble, the positioning sleeve is elastically connected with the thimble through the elastic connector, and the inner conical surface of the positioning sleeve is elastically abutted against the end part of the thimble in a static state of the thimble; the elastic connecting piece comprises a fixing sleeve, a first anti-rotation sleeve and a spring, the fixing sleeve is in threaded connection with the ejector pin, the fixing sleeve is positioned on one side, away from the end part of the metal shaft, of the positioning sleeve, the end part of the fixing sleeve is provided with an accommodating ring groove, the first anti-rotation sleeve is arranged in the accommodating ring groove and is embedded with the limiting groove in a sliding fit manner, and the first anti-rotation sleeve is used for preventing the fixing sleeve from spinning relative to the ejector pin when the ejector pin rotates; the spring sleeve is arranged on the thimble, and two ends of the spring are respectively abutted between the sliding cylinder and the first anti-rotation sleeve.
Preferably, first rotation-preventing sleeve includes hoop and first ball, and the hoop cover is established on the thimble, the internal week of hoop be provided with spacing groove sliding fit's first spacing, the opening face of hoop is provided with symmetrical chute, the chute of symmetry expands to its internal week from the outer periphery of hoop, first ball setting is between the chute of symmetry.
Preferably, one end of the inner circumferential surface of the sliding cylinder, which is away from the metal shaft, is provided with a first stepped groove which is coaxial with the metal shaft, the first stepped groove is elastically connected with the thimble through an elastic connector, and the inner circumferential surface of the sliding cylinder is also provided with a second limiting strip which is in sliding fit with the limiting groove; the positive and negative rotation sliding guide comprises a direct current blade which is circumferentially arranged on the outer circumferential surface of the sliding cylinder.
Preferably, the forward and reverse rotation sliding guide further comprises a guide shell, and the guide shell and the sliding shell are coaxially arranged on the outer ring of the direct current blade.
Preferably, both ends of the guide shell are flared outwardly to form a bell mouth.
Preferably, one end of the inner circumferential surface of the sliding cylinder, which is away from the metal shaft, is provided with a second stepped groove which is coaxial with the metal shaft, the second stepped groove is elastically connected with the thimble through an elastic connector, and the sliding cylinder is provided with an arc-shaped sliding groove along the circumferential direction; the positive and negative rotation sliding guide device comprises a positioning pin which is arranged on the thimble along the radial direction, and the positioning pin penetrates through the arc-shaped sliding chute and is in sliding fit with the arc-shaped sliding chute.
Preferably, the connection portion of the positioning pin and the thimble is provided with an opening penetrating in the radial direction thereof, the opening expanding from the outer end of the fixing pin toward the inner end thereof, and the second ball is disposed in the opening.
Preferably, the end part of the second stepped groove, which is away from the metal shaft, is provided with a first arc-shaped ring groove which is coaxial with the second stepped groove, the forward and reverse rotation sliding guide device comprises a rotating ring and a third ball, the rotating ring is coaxially and rotatably arranged on the second stepped groove, the third ball is elastically connected with the ejector pin through an elastic connector, and the third ball is circumferentially arranged between the first arc-shaped ring groove and the second arc-shaped ring groove.
Compared with the prior art, the beneficial effect of this application is:
1. according to the thimble rotating device, the positioning sleeve can be guided to be separated from the end part of the metal shaft or position the end part of the metal shaft through the positive and negative rotation guider when the thimble rotates forwards or reversely, namely point contact is replaced by line contact so as to stably position the rotating axis of the metal shaft, and the metal shaft is prevented from being separated from the clamping of the thimble due to deviation of the rotating axis when the rotating metal shaft is subjected to induction heating, so that production accidents are further caused;
2. according to one embodiment of the application, the sliding cylinder can be guided to be far away from or close to the end part of the metal shaft on the ejector pin through the direct-current blade and the guide cylinder, the structure is simple and stable, and the metal shaft can be accurately positioned;
3. another real-time force of this application can guide the tip that the sliding barrel kept away from or was close to the metal axle on the thimble through arc spout and the locating pin of setting on the sliding barrel, and the structure is simple stable equally, can carry out accurate location to the metal axle equally.
Drawings
FIG. 1 is a perspective view of a first embodiment of an apparatus for induction heat treatment of metal parts;
FIG. 2 is a side view of a first embodiment of an apparatus for induction heating treatment of metal parts;
FIG. 3 isbase:Sub>A sectional view at section A-A of FIG. 2;
FIG. 4 is a partial enlarged view of FIG. 3 at B;
FIG. 5 is a cross-sectional view at section C-C of FIG. 2;
FIG. 6 is an enlarged view of a portion of FIG. 3 at D;
FIG. 7 is a perspective view of a second embodiment of an apparatus for the induction heating treatment of metal parts;
FIG. 8 is a side view of a second embodiment of an apparatus for the induction heating treatment of metal parts;
FIG. 9 is a sectional view at section E-E of FIG. 8;
fig. 10 is a partially enlarged view of fig. 9 at F.
The reference numbers in the figures are:
1-a thimble; 101-a limiting groove;
2-an induction coil;
3-positioning sleeve; 301-a slide cartridge; 3011-first step groove; 3012-a second stop bar; 3013-a second step groove; 3014-an arc chute;
4-positive and negative rotation sliding guide; 401-a dc blade; 402-a guide shell; 403-positioning pins; 404-a second ball; 405-a rotating ring; 406-a third ball;
5-a resilient connector; 501-fixing sleeves; 5021-a hoop; 5023-a first limit strip; 5024, a guide groove; 5022-a first ball bearing; 503-spring.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1-10, 1. An apparatus for induction heat treatment of metal parts comprises a loading table, two coaxial thimble 1 arranged on the loading table for clamping a metal shaft, a rotary driver for driving the thimble 1 to rotate, a first shifter for driving one thimble 1 to move towards the other thimble 1, an induction coil 2 arranged coaxially with the thimble 1, a second shifter for driving the induction coil 2 to move along the axial direction of the metal shaft, a positioning sleeve 3 and a forward and reverse rotation sliding guide 4, wherein the positioning sleeve 3 is coaxially arranged on the thimble 1 in a sliding manner, and an inner conical surface which is expanded outwards and faces to the end part of the metal shaft is arranged on the positioning sleeve 3; the positive and negative rotation sliding guide 4 is arranged between the positioning sleeve 3 and the thimble 1, and the positive and negative rotation sliding guide 4 is used for guiding the inner conical surface to move relative to the end part of the metal shaft after the thimble 1 changes the steering direction.
When the metal shaft is subjected to heat treatment, the coaxiality of the metal shaft and the two ejector pins 1 needs to be maintained so as to prevent the metal shaft from deviating from the rotating axis to be separated from clamping during high-speed rotation, thereby causing production accidents;
because the two ejector pins 1 in the prior art are in point contact with the end surface of the metal shaft, the coaxiality is difficult to adjust;
before use, the distance between the two positioning sleeves 3 respectively arranged on the two ejector pins 1 is smaller than the axial length of the metal shaft, the distance between the two ejector pins 1 is larger than the axial length of the metal shaft, and the inner conical surfaces of the two positioning sleeves 3 are oppositely arranged;
when the ejector pin is used, the metal shaft is placed between the inner conical surfaces of the two positioning sleeves 3, so that the end part of the metal shaft is in line contact with the inner conical surfaces, the two positioning sleeves 3 can move back to back because the positioning sleeves 3 are arranged on the ejector pins 1 in a sliding manner, and when the first mover is started, one ejector pin 1 moves towards the other ejector pin 1, so that the two ejector pins 1 are respectively abutted against the end part of the metal shaft, and at the moment, the metal shaft can still slightly slide relative to the ejector pins 1;
starting a rotary driver to enable the two ejector pins 1 to drive the metal shaft to rotate reversely, further enabling the forward and reverse rotation sliding guide 4 to guide the inner conical surface of the positioning sleeve 3 to gradually apply pressure to the end part of the metal shaft, enabling the metal shaft to be gradually coaxial with the two ejector pins 1 under the action of end part line contact, closing the rotary driver after a period of time, and driving a first mover to increase the pressure of the two ejector pins 1 to the end part of the metal shaft, so that the metal shaft cannot move relative to the ejector pins 1 after being ensured to be coaxial with the ejector pins 1;
then, continuously starting the rotary driver to enable the thimble 1 to drive the metal shaft to rotate forward, and further enabling the thimble 1 to guide the two positioning sleeves 3 to move backwards on the thimble 1 in a forward-reverse rotation guiding mode, so that the inner conical surface is separated from the end part of the metal shaft, and the end part of the metal shaft is exposed to the outside to facilitate induction heat treatment;
when the metal shaft rotates in the forward direction, the induction coil 2 and the second mover are started, so that the induction coil 2 can perform heat treatment on the whole metal shaft;
this application can be when thimble 1 corotation or reversal through the just derotation director, and guide position sleeve 3 breaks away from the tip of metal axle or fixes a position the tip of metal axle, is about to be the point contact and changes the rotatory axle center of location metal axle that so can be stable into line contact, avoids when the metal axle of pairing rotation carries out induction heating, and the metal axle breaks away from the centre gripping of thimble 1 because of deviating the rotatory axle center, and then causes the production accident.
As shown in fig. 3, the positioning sleeve 3 includes a sliding cylinder 301, the sliding sleeve is slidably disposed on the thimble 1, the sliding cylinder 301 expands outward toward the end of the metal shaft to form an inner conical surface coaxial with the thimble 1, the processing apparatus further includes an elastic connector 5, the elastic connector 5 is disposed on the thimble 1, the positioning sleeve 3 is elastically connected with the thimble 1 through the elastic connector 5, and the inner conical surface of the positioning sleeve 3 is elastically abutted to the end of the thimble 1 in a static state of the thimble 1.
Through setting up sliding cylinder 301 on thimble 1 with coaxial sliding, so that when thimble 1 forward rotation or reverse rotation, positive derotation sliding guide 4 can guide sliding cylinder 301 to be close to or keep away from the tip of metal axle, can elastic connection sliding cylinder 301 and thimble 1 through elastic connector 5 simultaneously, make the metal axle can be by elastic centre gripping between the interior conical surface of two symmetries, then start first shifter, make two thimble 1 can press the tip at the metal axle, the pressure of interior conical surface to the metal axle tip increases gradually simultaneously, under the effect of interior conical surface, carry out prepositioning to the metal axle, thereby improve the axiality of metal axle and thimble 1.
As shown in fig. 4 and fig. 6, a limiting groove 101 extending along an axial direction of the thimble 1 is provided on a circumferential surface of the thimble 1, the limiting groove 101 axially penetrates through an end of the thimble 1 departing from an end of the metal shaft, the elastic connecting member includes a fixing sleeve 501, a first anti-rotation sleeve and a spring 503, the fixing sleeve 501 is connected to the thimble 1 by a thread, the fixing sleeve 501 is located on a side of the positioning sleeve 3 departing from the end of the metal shaft, an accommodating ring groove is provided at an end of the fixing sleeve 501, the first anti-rotation sleeve is provided in the accommodating ring groove and is engaged with the limiting groove 101 in a sliding manner, and the first anti-rotation sleeve is used for preventing the fixing sleeve 501 from spinning relative to the thimble 1 when the thimble 1 rotates; the spring 503 is sleeved on the thimble 1, and two ends of the spring 503 are respectively abutted between the sliding cylinder 301 and the first rotation preventing sleeve.
Through screwing up fixed cover 501 screw thread ground connection setting on thimble 1, set up first anti-rotating cover in fixed cover 501 holds the annular, because of thimble 1 is high-speed rotatory in the working action, fixed cover 501 with thimble 1 threaded connection can take place autogyration because of rotatory effort relatively thimble 1, thereby can cause the unstability of structure, through setting up first anti-rotating cover in holding the annular, and make between spacing groove 101 and the first anti-rotating cover cooperate, make fixed cover 501 not take place autogyration because of thimble 1's rotation, consequently, can stabilize the tip height of spring 503 connected with it, make the structure more stable, through establish spring 503 cover on thimble 1, can make elastic connection between first anti-rotating cover and the sliding barrel 301, so that the inner conical surface can the elastic butt carry out the prepositioning to the metal axle at the tip of metal axle.
As shown in fig. 5, the first anti-rotation sleeve includes a hoop 5021 and first balls 5022, the hoop 5021 is sleeved on the thimble 1, a first limit strip 5023 in sliding fit with a limit groove 101 is arranged on the inner periphery of the hoop 5021, symmetrical chutes are arranged on the opening surface of the hoop 5021, the symmetrical chutes expand from the outer periphery of the hoop 5021 to the inner periphery of the hoop 5021, and the first balls 5022 are arranged between the symmetrical chutes.
By arranging the hoop 5021 with the opening in the accommodating ring groove of the fixed sleeve 501 and enabling the first limiting strip 5023 on the inner circumferential surface of the hoop 5021 to be in sliding fit with the limiting groove 101, the hoop 5021 cannot rotate automatically relative to the thimble 1, and meanwhile, by arranging the first ball 5022 in the symmetrical guide groove 5024, when the thimble 1 rotates at a high speed, the first ball 5022 gradually moves in a direction away from the axis of the hoop 5021 due to the action of centrifugal force, and the symmetrical chutes expand from the outer circumference of the hoop 5021 to the inner circumference thereof, so that the opening of the hoop 5021 gradually expands, the abutting force between the hoop 5021 and the accommodating ring groove is increased, and the relative rotation of the fixed sleeve 501 and the thimble 1 can be effectively prevented.
As shown in fig. 6, as a first embodiment of the present application, one end of the inner circumferential surface of the sliding cylinder 301, which is away from the metal shaft, is provided with a first stepped groove 3011, which is coaxial with the metal shaft, the first stepped groove 3011 is elastically connected to the thimble 1 through an elastic connector 5, and the inner circumferential surface of the sliding cylinder 301 is further provided with a second limiting strip 3012, which is in sliding fit with the limiting groove 101; the forward and reverse rotation sliding guide 4 includes a straight flow vane 401, and the straight flow vane 401 is circumferentially provided on the outer circumferential surface of the sliding cylinder 301.
The first stepped groove 3011 connected with the elastic connecting piece is arranged on the sliding cylinder 301, and the second limiting strip 3012 in sliding fit with the limiting groove 101 is arranged on the inner circumference of the sliding cylinder 301, so that the sliding cylinder 301 can only slide on the ejector pin 1 in the axial direction and cannot rotate relative to the ejector pin 1, the direct current blade 401 is circumferentially arranged on the outer circumferential surface of the sliding cylinder 301, when the ejector pin 1 rotates to transmit torque to the sliding cylinder 301, due to the structural characteristics of the direct current blade 401, under the condition that the airflow and the ejector pin 1 are not in different directions, the sliding cylinder 301 can slide on the ejector pin 1, so that the inner conical surface can abut against the end part of the metal shaft in the axial direction to position the metal shaft, and the inner conical surface can also be away from the end part of the metal shaft in the axial direction to avoid heating of the induction coil 2 to the end part of the metal shaft.
As shown in fig. 6, the forward/reverse rotation sliding guide 4 further includes a guide cylinder 402, and the guide cylinder 402 is provided coaxially with the sliding cylinder 301 on the outer ring of the straight-flow blade 401.
By arranging the guide cylinder 402 at the outer ring of the straight flow blade 401, the air flow can uniformly pass through the straight flow blade 401 to prevent the air flow from diverging outward from the outer side of the straight flow blade 401, thereby improving the guiding force of the air flow to the sliding cylinder 301.
As shown in fig. 6, both ends of the guide shell 402 are flared outward to form a bell mouth.
Through making the outside expansion in order to form the horn mouth in both ends of draft tube 402, can make direct current blade 401 when rotatory, the air current increases through the velocity of flow increase when direct current blade 401, and the principle is equated to venturi, and then increases the effort of air current to direct current blade 401.
As shown in fig. 7-10, as a second embodiment of the present application, one end of the inner circumferential surface of the sliding cylinder 301, which is away from the metal shaft, is provided with a second stepped groove 3013 coaxial therewith, the second stepped groove 3013 is elastically connected to the thimble 1 through an elastic connector 5, and the sliding cylinder 301 is provided with an arc-shaped sliding groove 3014 along the circumferential direction; the forward and reverse rotation sliding guide includes a positioning pin 403, the positioning pin 403 is radially disposed on the thimble 1, and the positioning pin 403 penetrates through the arc-shaped sliding slot 3014 and is in sliding fit therewith.
Through set up the second dovetail groove at the tip that the circumferential surface deviates from the metal axle in slide barrel 301, can make second dovetail groove pass through elastic connector 5 and thimble 1 elastic connection, radially set up on thimble 1 after passing arc spout 3014 with the constant head tank simultaneously, so that thimble 1 is when rotatory, the differential that produces between thimble 1 and the slide barrel 301 can make slide barrel 301 can slide with rotatory mode on thimble 1, and then when thimble 1 forward rotation or reverse rotation, slide barrel 301 can be kept away from or is close to the tip of metal axle according to the difference that thimble 1 turned to.
As shown in fig. 9, the connecting portion of the positioning pin 403 and the thimble 1 is provided with an opening penetrating in the radial direction thereof, the opening expanding from the outer end of the fixing pin toward the inner end thereof, and a second ball 404 is provided in the opening.
When the thimble 1 rotates at a high speed, the positioning pin 403 is radially arranged on the thimble 1, and meanwhile, the positioning pin 403 is matched with the arc-shaped chute 3014, so that the positioning pin 403 is easily separated from the thimble 1, an opening penetrating along the radial direction is arranged at the joint of the positioning pin 403 and the thimble 1, and the second ball 404 is arranged in the opening, so that the fixing pin extends along the radial direction of the thimble 1, and when the thimble 1 rotates, the second ball 404 acts on the opening under the action of centrifugal force, so that the opening is expanded, and the fixing pin can be stably connected with the thimble 1.
As shown in fig. 10, a first arc-shaped ring groove coaxial with the second step groove 3013 is provided at an end portion departing from the metal shaft, the sliding guide for forward and reverse rotation includes a rotating ring 405 and a third ball 406, the rotating ring 405 is coaxially and rotatably provided on the second step groove 3013, the third ball 406 is elastically connected to the thimble 1 through an elastic connector 5, and the third ball 406 is circumferentially arranged between the first arc-shaped ring groove and the second arc-shaped ring groove.
In the second embodiment of the present application, because the sliding barrel 301 slides on the thimble while rotating, and the spring 503 is connected to the third step groove and the first anti-rotation sleeve, when the sliding barrel 301 rotates, the sliding barrel 301 will generate a torsion force to the spring 503, and then will generate a resistance to the lifting of the sliding barrel 301, and by providing the first arc-shaped ring groove on the second step groove 3013, and rotationally providing the rotating ring 405 provided with the second arc-shaped ring groove on the second step groove 3013, and circumferentially arranging the third ball 406 between the first arc-shaped ring groove and the second arc-shaped ring groove, the friction force between the spring 503 and the second step groove 3013 is reduced, so that the movement of the sliding barrel 301 is more stable.
The above examples only show one or more embodiments of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The equipment for the induction heat treatment of the metal parts comprises a loading platform, two coaxial ejector pins (1) which are arranged on the loading platform and used for clamping a metal shaft, a rotary driver used for driving the ejector pins (1) to rotate, a first mover used for driving one ejector pin (1) to move towards the other ejector pin (1), an induction coil (2) which is coaxially arranged with the ejector pins (1), and a second mover used for driving the induction coil (2) to move along the axial direction of the metal shaft, and is characterized by further comprising a positioning sleeve (3) and a forward and reverse rotation sliding guide (4), wherein the positioning sleeve (3) is coaxially and slidably arranged on the ejector pins (1), and an inner conical surface which faces the end part of the metal shaft and expands outwards is arranged on the positioning sleeve (3); the positive and negative rotation sliding guide (4) is arranged between the positioning sleeve (3) and the thimble (1), and the positive and negative rotation sliding guide (4) is used for guiding the inner conical surface to move relative to the end part of the metal shaft after the thimble (1) changes the steering direction;
the positioning sleeve (3) comprises a sliding cylinder (301), the sliding cylinder (301) is arranged on the thimble (1) in a sliding mode, the sliding cylinder (301) outwards expands towards the end portion of the metal shaft to form an inner conical surface coaxial with the thimble (1), the induction heat treatment equipment further comprises an elastic connector (5), the elastic connector (5) is arranged on the thimble (1), the positioning sleeve (3) is elastically connected with the thimble (1) through the elastic connector (5), and the inner conical surface of the positioning sleeve (3) is elastically abutted to the end portion of the thimble (1) in the static state of the thimble (1);
the thimble structure comprises a thimble (1), and is characterized in that a limiting groove (101) extending along the axial direction of the thimble (1) is arranged on the circumferential surface of the thimble (1), the limiting groove (101) axially penetrates through one end, deviating from the end part of a metal shaft, of the thimble (1), an elastic connecting piece comprises a fixing sleeve (501), a first anti-rotation sleeve and a spring (503), the fixing sleeve (501) is in threaded connection with the thimble (1), the fixing sleeve (501) is positioned on one side, deviating from the end part of the metal shaft, of a positioning sleeve (3), an accommodating annular groove is formed in the end part of the fixing sleeve (501), the first anti-rotation sleeve is arranged in the accommodating annular groove and is embedded and matched with the limiting groove (101) in a sliding mode, and the first anti-rotation sleeve is used for preventing the fixing sleeve (501) from spinning relative to the thimble (1) when the thimble (1) rotates; the spring (503) is sleeved on the thimble (1), and two ends of the spring (503) are respectively abutted between the sliding cylinder (301) and the first anti-rotation sleeve.
2. The metal part induction heat treatment equipment according to claim 1, wherein the first anti-rotation sleeve comprises a hoop (5021) and first balls (5022), the hoop (5021) is sleeved on the thimble (1), a first limit strip (5023) in sliding fit with the limit groove (101) is arranged on the inner periphery of the hoop (5021), symmetrical inclined grooves are formed in the opening surface of the hoop (5021), the symmetrical inclined grooves expand from the outer periphery of the hoop (5021) to the inner periphery of the hoop, and the first balls (5022) are arranged between the symmetrical inclined grooves.
3. The equipment for the induction heat treatment of the metal parts and fittings as claimed in claim 1 or 2, wherein one end of the inner circumferential surface of the sliding cylinder (301) away from the metal shaft is provided with a first stepped groove (3011) coaxial with the metal shaft, the first stepped groove (3011) is elastically connected with the thimble (1) through an elastic connector (5), and the inner circumferential surface of the sliding cylinder (301) is further provided with a second limiting strip (3012) in sliding fit with the limiting groove (101); the forward and reverse rotation sliding guide (4) comprises a straight flow vane (401), and the straight flow vane (401) is circumferentially arranged on the outer circumferential surface of the sliding cylinder (301).
4. The apparatus for induction heat treatment of metal parts according to claim 3, wherein the forward and reverse rotation sliding guide (4) further comprises a guide cylinder (402), and the guide cylinder (402) is disposed coaxially with the sliding cylinder (301) at an outer ring of the DC blade (401).
5. The apparatus for the induction heating treatment of metal parts according to claim 4, wherein both ends of the guide shell (402) are flared outwardly to form a bell mouth.
6. The equipment for the induction heat treatment of the metal parts and fittings as claimed in claim 1 or 2, wherein one end of the inner circumferential surface of the sliding cylinder (301) away from the metal shaft is provided with a second stepped groove (3013) coaxial with the metal shaft, the second stepped groove (3013) is elastically connected with the ejector pin (1) through an elastic connector (5), and the sliding cylinder (301) is provided with an arc-shaped sliding groove (3014) along the circumferential direction; the positive and negative rotation sliding guide comprises a positioning pin (403), the positioning pin (403) is arranged on the thimble (1) along the radial direction, and the positioning pin (403) penetrates through the arc-shaped sliding groove (3014) and is in sliding fit with the arc-shaped sliding groove.
7. The apparatus for induction heat treatment of metal parts according to claim 6, wherein the connecting portion of the positioning pin (403) and the thimble (1) is provided with an opening extending therethrough in the radial direction thereof, the opening expanding from the outer end of the fixing pin toward the inner end thereof, and the second ball (404) is disposed in the opening.
8. The apparatus for the induction heat treatment of metal parts according to claim 6, wherein the end of the second stepped groove (3013) facing away from the metal shaft is provided with a first arc-shaped ring groove coaxial therewith, the second stepped groove comprises a rotating ring (405) and a third ball (406) in a forward and reverse sliding guide manner, the rotating ring (405) is coaxially and rotatably arranged on the second stepped groove (3013), the third ball (406) is elastically connected with the thimble (1) through an elastic connector (5), and the third ball (406) is circumferentially arranged between the first arc-shaped ring groove and the second arc-shaped ring groove.
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| CN202211114889.7A CN115247226B (en) | 2022-09-14 | 2022-09-14 | Equipment for metal part induction heat treatment |
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| CN202211114889.7A CN115247226B (en) | 2022-09-14 | 2022-09-14 | Equipment for metal part induction heat treatment |
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| CN115247226A CN115247226A (en) | 2022-10-28 |
| CN115247226B true CN115247226B (en) | 2022-11-29 |
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| Publication number | Publication date |
|---|---|
| CN115247226A (en) | 2022-10-28 |
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