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US3007823A - Method and apparatus for quench hardening - Google Patents

Method and apparatus for quench hardening Download PDF

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Publication number
US3007823A
US3007823A US710882A US71088258A US3007823A US 3007823 A US3007823 A US 3007823A US 710882 A US710882 A US 710882A US 71088258 A US71088258 A US 71088258A US 3007823 A US3007823 A US 3007823A
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Prior art keywords
contacts
pressure
piston
quenching
dies
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US710882A
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English (en)
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Robert V Adair
Oliver F Bauer
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Gleason Works
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Gleason Works
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Priority to US710882A priority Critical patent/US3007823A/en
Priority to GB1394/59A priority patent/GB897809A/en
Priority to CH6868259A priority patent/CH371141A/fr
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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
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • 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
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like

Definitions

  • the part is quenched while held clamped between dies which hold it against distortion.
  • One serious dirliculty has been that the quenched parts tend to be distorted in the way that a resilient disc is flexed by pressure applied to its center when its periphery is held. in the case of a ring gear the plane back face thereof may distort to either internal or external conical shape, the latter being more usual.
  • Increase of the clamping pressure does not overcome this difficulty and in some cases even increases the amount of distortion.
  • the present method and one aspect of the present apparatus is based upon e discovery that this distortion is substantially reduced by periodically releasing and then reapplying the clamping pressure as the quenching operation proceeds.
  • FIG. 1 is a front view of the machine which constitutes the preferred embodiment of the apparatus
  • FIG. 2 is a vertical sectional view through the supporting and actuating mechanism for the upper dies of the machine, a portion of the view being in the planes indicated by section line 2-2 of FIG. 4;
  • FIG. 3 is a detail sectional View in vertical plane 3-3 of FIG. 2;
  • FIG. 4 is a horizontal sectional view in plane 44 of PI. 2;
  • FIG. 5 is a view in the horizontal planes indicated by section line 5-- of FIG. 2;
  • FIGS. 6 and 7 are isometric views each showing one of the two positions of a locking device appearing in FIGS. 2 and 5;
  • FIG. 8 is a. vertical sectional View, in the planes indicated by section line S-8 in FIG. 9, through the lower die parts and their supporting and actuating mechanism;
  • FIG. 9 is a fragmentary plan view of parts shown in FIG. 8.
  • FIG. 10 is a detail side view illustrating an adjustable stop device included in the structure shown in FIG. 8;
  • FIG. 11 is a diagram illustrating the distortion of ring gears occurring during a quenching operation.
  • FIGS. 12 and 13 are diagrams respectively of the h draulic system and of the electrical system of the machine.
  • the machine includes a base 21 comprising a quenching tank and three upright rods 22, 23 and 24 connected at their upper ends by a head 25.
  • a press frame as is slidable on rods 22 and 2.3, such motion of the frame being effected by a motor 27 which through reduction gearing rotates two cranks 28 in unison.
  • the cranks are journaled for rotation in the base about aligned horizontal axes 29 and their crank pins 31 are journaled in the upper ends of connecting rods 32.
  • the lower ends of these rods journal crank pins 33 carried by the press frame 26.
  • Journalcd for rotation in the press frame on horizontal axis 34 are two motor driven cranks 35 whose crank pins are journaled in the upper ends of connecting rods as.
  • the lower ends of the connecting rods are pivo y connected by crank pins 37, FIGS. 2 and 3, to a vertical slide on rods 22 and 23.
  • the slide is connected to an upper die carrier 33 by an adjusting screw s.
  • the arrangement is such that when the cranks 35 are rotated one-half turn from the position shown, about axis 34-, the slide 38, screw d]. and die carrier 39 are lowered to close the upper dies upon a workpiece, in this case ring gear G, supported on lower dies on the press frame 26; and upon rotation of cranks 28 by onehalf turn about axis 2d, from the position shown, the press frame will be lowered to carry the workpiece below the level of quenching liquid in the tank.
  • the upper die carrier Upon a further half turn of cranks 35 about axis 3 the upper die carrier will be raised to release the workpiece, and upon a further half turn of the cranks 23 the press frame will be returned upwardly to the position shown.
  • the upper die carrier has a. central cylinder chamber 42 aligned with screw 41.
  • Slidable in the cylinder is a piston 43 whose rod 44 has a conical expander -5 for a multi-part, radially expansible ccnterin device d6 adapted to fit in the central bore of the wor Jiece
  • the centering device comprises a plurality of segments which are compressed radially by a ring-shaped coiled spring The segments rest on a plate carried by the rod 44.
  • annular chamber 53 for coolant is provide in the die assembly, and suitable conduits not shown extend from this chamber to a coolant circulating system.
  • Concentric with member 552 is the annular die member of an outer die assembly having a coolant chamber 55 connected to the circulating system.
  • the outer die assembly is connected at 55 to the lower ends of six piston rods 57 whose pistons 53 are reciprocable in cylinder chambers 59 in the carrier 39. As shown the connections 53, as between the piston rods 543, 57 and the related die members 52, 5d are a apted to allow slight lateral movement of the latter so that they may slide freely relative to each other and to the tubular part of carrier 39 which guides them.
  • the device so is expanded by the application of hydraulic pressure to cylinder chamber 2; through port Hydraulic pressure may be ed respectively to the upper ends of chambers ll; 1 through ports 62 and as to press thmembers 52 and $4 downwardly against the wor 'fiie upv d reaction of such as its is transmitted by the screw .4 to the slide which in turn transmits it to the frame
  • the screw is secured to the die carrier 39 and is set -threaded to a nut 64 rotatable in the slide.
  • a nut 64 rotatable in the slide.
  • the means wh ieby the upward reaction is transmitted from the slide to the frame are duplicated on both sides of the machine, but only the means on the right side are shown, in FIGS. 2 and 5 to 7 inclusive. They include a plurality of tongues d7 provided on the slide and on hardened steel bars 63 secured to it.
  • tongues are adapted to abut a stop 69 on frame 26 in the down limit position of the slide.
  • Tongues ill on the frame 26, and on a hardened steel bar '71 secured to it, are aligned with the spaces between tongues 67 so that the latter may pass by as the slide is raised or lowered.
  • Slidable horizontally in the frame is a lock bar 72 having tongues 73 which in the locking position of the bar shown in FIG. 6 are aligned with the tongues 67 and 7d whereby they may transmit upward load from the slide 38 directly to the frame, and in the unlocking limit position of the bar, shown in FIG.
  • a piston 74 is connected to the bar by blocks 75. In these limit positions the respective blocks about related stops in on the frame.
  • the piston is reciprocable in a cylinder 77 on the frame, reciprocation being effected by hydraulic pressure applied to the ends of the cylinder chamber through ports '73 and 79, FIG. 5.
  • each connecting rod 36 has a slot 81 slidably receiving a block 82 which is urged downwardly relative to the rod by compression springs 83 backed by a slot bridging member $4. Plates secured to the block hold it against lateral displacement.
  • the base of press frame 26 carries an articulated die for supporting the workpiece.
  • This die comprises concentric outer and inner annular members '87 and 8S supporting a plurality of radially disposed segmental bars 59 which are adapted to engage the plane bottom face of the workpiece.
  • For holding the bars in place their end portions of reduced thickness are received in annular grooves in a ring 9% seated on the frame and in a ring 91 keyed to a tubular part 93; and the reduced ends of the bars are provided with recesses receiving positioning pins 92 carried by rings 918 and $1.
  • Annular member 37 is seated on the frame while member $8 is supported by the part 93 which in turn is supported by a piston rod M.
  • the piston sections are held against rotation by keys 162 and 1&3, whereas the piston rod is rotatable by a wrench applied to its socket ltld.
  • By such rotation th piston sections may be adjusted toward or away from each other to thereby adjust the stroke of the piston between cylinder heads 99 and ltil. In the limit position of adjustment shown in FIG. 8 this stroke is zero, but when the flexing feature is in use with automobile ring gear workpieces the stroke will ordinarily be in a rang of about twenty-to forty-thousandths of an inch.
  • the piston rod is locked to part $3 by means of nut 195 and set screw 1%.
  • Part 93 is held against rotation in the frame by a key 107 secured to cylinder head 99.
  • the assembly including the piston, rod 5 4, and annular member 88 may be reciprocated by alternate application of hydraulic pressure through a passage RM to the lower chamber of the cylinder 93 and through ports 62 to the cylinders 48.
  • This of course requires the exertion of a sufficient downward pressure to the annular die members 54 to hold the gear in full engagement with the bars 89.
  • Springs 111 are arranged to act between the piston sections and the cylinder heads to eliminate backlash between the sections and the piston rod.
  • auxiliary stop means which limits the downward motion of the assembly 96, 37, as, 88 toward the cylinder head 101.
  • This auxiliary stop means comprises a ring 112. rotatable around part 93 and resting on cylinder head 99. The ring has a plurality of inclined surfaces 113 in contact with complementary surfaces lid on a ring 115 secured to part 93.
  • these surfaces are of helicoidal or screw shape so as to have substantial contact area.
  • the ring 112 is moved by a piston 116 whose rod 117 is pivotally connected at 118 to a pitman 119 which is pivoted at 121 to the ring. Such movement is effected by application of hydraulic pressure through port 122 or 123 to the opposite ends of the cylinder chamber 124 in which the piston is reciprocable.
  • the auxiliary stop means 112, 115 are entirely ineffective, irrespective of the stroke adjustment of piston 96, 97.
  • the limit position of the piston to the right which determines the auxiliary stop position, is controlled by abutment of piston rod 117 with an eccentric 125.
  • This eccentric is integral with a shaft 126 rotatable in the frame to adjust this limit position. Such adjustment may be made by means of a wrench applied to socket 127 after a clamp ring 128 held by screws 12) is first released.
  • a calibrated plate 131 secured to shaft 126 shows the position of adjustment of the eccentric.
  • quenching liquid is circulated under pressure by a suitable pump, not shown, through a system including stationary pipes 132, FIG. 8, which in the lower position of the press frame extend through openings 133 in cylinder member 98.
  • the pipes have openings 134 through which the fluid discharges tangentially into an annular chamber 135 in the frame. From this chamber it flows upwardly through openings 136 in the frame and aligned openings 137 in a ring 138 seated in an annular groove 139 in the frame.
  • the rate of flow may be adjusted by rotating the ring in the groove, after which the ring is locked by a screw 141, FIG. 9.
  • the hydraulic system of the machine comprises a sump 148 located in base 23;, a motor driven pump 14? receiving hydraulic fiuid from the sump and discharging it into a high pressure line 151, and a return line 152 leading back to the sump.
  • a solenoid operated reversing valve 153 to 156 and 158 and a solenoid operated selector valve 157, each of these valves being actuated by two solenoids, a and b.
  • the lines 151 and 152 are connected by reversing valve 153 to the passages 73 and Il which lead to opposite ends of cylinder 77; and are connected by reversing valve 154 to passages 122 and 1'23 leading into the opposite ends of cylinder 124-.
  • Selector valve 15? connects pressure line 15! either to line 159 or M1.
  • the lines 151 and 152 are also connected by reversing valve 155 to lines 162 and M3 leading to the lower and upper ends respectively of a cylinder 164 for a valve-operating piston 165; and are connected by reversing valve 155 to lines res and 1-67 leading to the lower and upper ends of a cylinder 16% for valve-operated piston 169
  • Reversing valve 1'53 connects line 166, which joins line 161, either to passage 1&9 leading to the lower end of cylinder 98 or to line 171 leading to a selector valve 172 operated by piston 169.
  • the selector valve 173 operated by piston Th connects either line 174 or line 175 to the passage til which leads into the operating cylinder 42, FIG. 2, of the centering device.
  • Line 174 is a low pressure line, being connected to line 159 by a pressure reducing valve 176 which is adjusted for a pressure on the order of live pounds per square inch.
  • Line 175 is a high pressure line, being connected to line 15. by a reducing valve 177 which is adjusted for a pressure in the range of twenty-five to two hundred fifty pounds per square inch. Lines lit?
  • a reducing valve 178 interposed in line rm between line 161 and reversing valve 158 is adjusted for a pressure in the range of twenty-five to one thousand pounds per square inch.
  • Another pressure reducing valve 179 adjusted for a high pressure of between twenty-live and one thousand pounds per square inch is interposed between line 161 and a line 1311.
  • Selector valve 172 operated by piston 16% connects either low pressure line 174 or high pressure line 171 to passage 62 into cylinders 48 for the inner die member 52.
  • Another selector valve 182 operated by piston 169 alternately connects low pressure line 174 and high pressure line 181 to passage 65 leading into cylinders '59 for the outer die member 54. Referring primarily to FIG.
  • the electrical system of the machine includes start and stop switches 183 and 184 for a controller 1M for the motor for circulating quenching liquid, the controller when energized closing holding contacts lM-Il; and start and stop switches 135 and 186 for a controller 2M for the motor for hydraulic pump 149, this controller having holding contacts ZM-l.
  • Momentary closing of switches 133 and 185' will connect the controllers across power leads L-l and 1-2 and thus cause their motors to run. It will also connect lead L-l to wire 187.
  • the system includes a two-position push button quenching cycle start switch Edd; a controller 3M for the motor which drives cranks 35 to raise and lower the die carrier 39, this controller when energized closing holding contacts SM-ll; and a controller 4M for the motor 27 which raises and lowers the press frame 26.
  • a cam 189 operated through speed reduction gearing by a small variable speed motor 5M, whose speed control circuit is not shown.
  • the cam comprises a pair of plates which are angularly adjustable to vary the efiective length of its lobe.
  • a snap-action switch arm 1% to alternately close against contacts 191 and H2.
  • a similarly adjustable cam H3 is operated through speed reduction gearing by a small variable speed motor 6M, the cam causing a switch 194 to alternately open and close.
  • a counter for the number of fiexures comprises a reset coil lC which when energized closes four sets of contacts lC-l to 113-4 and opens five sets of contacts 1C5 to lC9. It further comprises a coil 2C which is energized momentarily upon each flexure, and at the conclusion of a number of energizations, which is adjustable, it causes contacts lC-l to 10-4 to open and contacts lC-S to llC-9 to close.
  • a similar adjustable counter for the number of pulsing cycles comprises a reset coil 3C which when energized closes five sets of contacts llC-l to 3C*5 and opens two sets of contacts 3C-6 and 3C and a coil 4C momentarily energized upon each pulsing cycle and which, upon being energized the number of times for which the counter is set, opens contacts 30-1 to 3C 5 and closes contacts SC-d and 3C' system also includes an automatic cycle control relay fill having live sets of contacts lR-l to ill-5 which are closed only when the relay is energized; a relay 2R, which stops the press flame up position, and having four sets of contacts EEK-1 to 2R-4l closed only when the relay is energized and contacts 2R5 closed only when the relay is deenergized; and a.
  • relay 3R which stops the press frame in down position, comprising contacts 3Rl to Eli-3 closed only when the: relay is energized.
  • a look control relay 4R has contacts dR-l and 43142 which are closed and contacts did-.3 which are opened only when the relay is energized.
  • valve control relay 511 having contacts SR-l to Sl t-3i which are closed, and contacts SR-d to SR-d which are opened, only when the relay is energized; a flexing control relay 6R having contacts 6Rl and 6R-2 which are respectively closed and open only when the relay is energized; and another valve control relay 7R whose contacts 7R-1l and 7R-2 are closed only when the relay is energized and whose contacts 7R-3 and 7R-4 are open only when it is deenergizcd.
  • the electrical system further includes a manually operable switch 1% which when opened eliminates flexing; a manually operable switch 1% which may be opened to eliminate the pulsing operation; and machine 0 erated limit switches designated S4 to S8.
  • Switch S-l closes its upper contact a only when the slide 38 is in its uppermost position in frame 25, and at all other times closes its contact b; and switch S-Z normally closes its contact b, shifting to close contact a only when the slide reaches its lowermost position in the frame.
  • Switches 8-3 and S- l are normally open and are respectively closed only when the lock bars 72 on the right and left sides of the machine are in unlocking position as in FIG. 7.
  • Switchm 8-5 and 5-6 are closed only when the respective right and left lock bars are in locking position, as in FIG. 6.
  • switches 5-3 and 8-5 are contained in a single switch housing and are operated by the same switch lever 180.
  • switches 3- 5 and Sd are normally closed and are respectively opened only momentarily when the press frame reaches its upper and lower limit positions relative to the base 21.
  • valve 173 causes low pressure to be applied to centering device 46
  • valves 172 and 182 apply low pressure to the inner and outer die members 52 and 54
  • valve 157 connects line 15h to pressure line 151.
  • Valve 15% is ineffective since line 161 is disconnected.
  • the motor controller 3M is energized, to cause the upper die carrier 39 to be lowered by cranks 35, by a circuit established through contact I) of switch S2 and relay contacts 3C2 and 1R-3, the circuit being held after deenergization of relay 1R by contacts 3M1.
  • switch arm 8-2 closes against its contact a, thereby deenergizing controller 3M and stopping rotation of cranks 35 and energizing relay 4R with the result that contacts 4R2 and 4R-3 respectively close and open to reverse valve 153, causing the lock bars 72 to be shifted to locking position.
  • switches 5-3 and Sl open and limit switches S45 and 5-6 close, energizing relay SR and flexing motor 5M.
  • the counter coil 2C On each flexure the counter coil 2C is energized and upon reaching the number of energizations for which the counter is set, which ordinarily will be in the range of one to ten, the counter contacts 1C1 to 1C-4 open, and contacts 1C-5 to 1C-9 close. This occurs while upward pressure is being applied to annular member 38. Opening of 1C4. deenergizes counter reset coil 1C. Opening of 1C-4- and closing of 1C9 reverses valve 154 so that the auxiliary stop ring 112 is moved into its stop position. Although contacts 1C2 are now open the motor 5M continues to operate, as a result of closing of 1C-5, until cam 189 causes switch arm 1% to snap away from contact 192 and against contact 191. This causes the last reversal of valve 158 so that pressure is applied to upper die member 52, flexing the inner peripheral portion of the workpiece downwardly as far as is permitted by the auxiliary stop 112.
  • Closing of contacts lC-d establishes a circuit through controller 4M for motor 27 which operates to lower the press frame into the quench tank, the motor stopping when limit switch S'7 opens and thereby deenergizes relay 3R so that contacts 3R2 open. Quenching fluid from pipes 132, FIG. 8, now circulates over the workpiece in the paths previously described. Closing of con tacts 1C6 also energizes pulsing motor 6M, causing alternate energization and deenergization of relay 7R and counter coil 4C by cam operated switch 1%. The resulting alternate closing and opening of contacts 7R-2 and PZR-4 periodically reverses valve 156 which in turn causes reversal of valves 172 and 182.
  • the number will be set such that the pulsing will extend over the desired period, which for automobile ring gears will be about ten to fifteen seconds.
  • the relay SR Upon opening of contacts 3C4 the relay SR is deenergized, and its contacts SR- and 5R-4r closed, so that low pressure only is applied to die members 52 and 54 and to the centering device as.
  • contacts 3R-1 are now open, the opening of 3C?; results in deenergization of relay 4R, this causing reversal of valve 153 and shifting of lock bars 72 to unlocking position.
  • This opens switches S5 and 8-6, and closes switches 8-3 and 8- 1, causing energization of motor controller 3M through the circuit including contact b of switch 8-1 and contacts 30-6.
  • the upper die carrier assembly 38, 39 will therefore be raised.
  • suitable work handling means not shown and forming no part of the present invention, to remove the workpiece from the lower dies for further cooling in the quench tank.
  • switch 8-1 When the slide 33 reaches its uppermost position switch 8-1 will be opened from its contact b and closed against its contact a, deenergizing the controller 3M and establishing a circuit through switch 188, contacts lC-7 and controller 4M of motor 27. As a result the press frame will be raised to its upper limit position in which switch S43 is opened. This deenergizes relay 2R, reestablishing the conditions that existed prior to depression of the quenching cycle start button 188. Thus the machine is ready to repeat the quenching cycle when another workpiece is placed on the lower die bars $9.
  • the machine With the switch 1% opened the machine also operates through the same complete cycle previously described except that pulsing is omitted.
  • the pulsing motor 6M and the pulse counter comprising coils 3C and 4C operate as before to determine the length of the quenching phase of the cycle, but the relay 7R is not energized so that the contacts '7R-1 and 7R2 remain open and contacts 7R-3 and "I'lliremain closed, with the result that valves i555 and 15s are not reversed to cause pulsing.
  • Solenoids and i551) remain energized, so that valves 155 and 156 maintain pressure in lines 163 and 167, with the result that valves E73, 172. and 182 direct high pressures into the cylinder 42 for centering device 4-6 and into the cy ders 48 and 59 for inner die members 52 and 54 throughout the quenching cycle.
  • FIG. ii is shown a ring gear G being quenched while held clamped to a lower die $59 by upper die members 57. and as and held centered by a centering device Without the pulsing of the present invention gears frequently distort the sense of dishing upwardly as shown, greatly exaggerated, by the dash-dot outline of the gear.
  • the workpiece rests on the bars 89 rather than on the annular members 37 and 88, this arrangement being preferred because it presents a contact area extending across the full width or the bottom face of the workpiece.
  • the bars may be on itted and the members 87, 853 made of suitable greater height to directly engage the bottom of the workpiece.
  • the members 8! and $8 may be regarded as themselves being the lower die members and the bars 89 as being merely filler or pressure distributing parts interposed between the dies and the workpiece.
  • pressure distributing parts similar to bars 89 may be associated with the upper die assembly 52, 3.
  • Apparatus for quench hardening a gear or like part comprising a pair of dies between which the pant may be clamped while being quenched, a system for etlecting flow of a quenching medium over the part while the latter is so clamped, means for applying clamping pressure to the dies, and coordinated control means for said system and said pressure applying means, said control means being operable to cause release and reapplication of clamping pressure to occur during and in predetermined time relation to the period of quenching flow, while the pa t is undergoing thermal contraction.
  • a aratus according to claim 5 in which the means applying clamping pressure is operated by hydraulic pressure and said control means include valve means actuated periodically to reduce the pressure applied to the part.
  • Apparatus according to claim 6 in which there is a motor and a cam driven thereby which is arranged to actuate said valve means for effecting the periodic reduction in pressure, said motor being of the variable speed type whereby the frequency of said pressure reductions may be varied.
  • Apparatus for quench hardening a ring gear or like part comprising two sets of concentric members through which pressure may be applied against the opposite faces of the part, means for applying pressure to a member of one set for clamping the part between the member and the opposing member of the other set, separate hydrauic-ally operated means for respectively applying pressure the other members of said sets, and means for re y -singly applying differential pressures to said separate hydraulically operated means to thereby flex the part back and forth.
  • Apparatus according to claim 8 in which there is a means to adjust the stroke of one member of said other mem ers resulting from reversals of the pressure dilferential.
  • the hydraulically operated means comprises a piston and a piston rod connecting the piston to said one member
  • the stroke adjusting means comprises two sections of the piston haying screw threaded connections of opposite hand to the piston rod and means whereby the rod may be rotated relative to said sections to thereby adjust the efieotive length of the piston.
  • Apparatus according to claim 8 in which the means for reversing the pressure diiierential comprises a motor and a cam driven.- thereby, and valve means operated by the earn, the motor being of the variable speed type whereby the frequency of flexure of the part may be varied.
  • auxiliary stop movable to and from a position in which it further restricts the stroke of said one member away from its opposing member.
  • Apparatus according to claim 12 in which there is an actuator for said movable stop, and means effective after, a predetermined number of flexures of the part to cause the actuator to shift the stop to said position and to discontinue said reversing of the pressure diiferential while the latter is in a direction to hold said one member against the stop.
  • Apparatus according to claim 12 in which there is an adjusting means for varying said position of the auxiliary stop.
  • auxiliary stop comprises a rotatable ring having a plurality of inclined surfaces engaging similarly inclined surfaces on a part rigid with said one member, and said adjusting means comprises an adjustable stop to limit the rotation of the ring in one direction.
  • Apparatus for quench hardening a ring gear or like part having a supporting structure for such part comprising a pair of concentric annular members which are adapted for relative motion in the direction of their axis, a plurality of bars for contacting a face of the part, said bars being substantially radial of said axis and being supported by said members for rocking action thereon upon such relative motion of the members.
  • Apparatus for quench hardening a ring gear or like part having a supporting structure for such part comprising a pair of coaxial outer and inner annular members, means for effecting relative adjustment between said members in the direction of their axis, a plurality of bars for contacting a face of the part, said bars being substantially radial of said axis and being supported by said members for rocking action thereon upon such adjustment.
  • Apparatus for quench hardening a ring gear or ike part comprising a pair of concentric annular die members for engaging a face of the part, a die carrier having two sets of cylinders parallel to the axis of said die members, there being a plurality of cylinders in each set, pistons reciprocable in the cylinders, and the pistons in the cylinders of one set being connected to one die member and those in the other set being connected to the other die member.
  • Apparatus according to claim 18 in which said two sets of cylinders are airanged in concentric circles about said axis and said carrier has another cylinder aligned with said axis, a piston in said cylinder, and a workpiece centering device carried by said piston.
  • Apparatus for quench hardening a ring gear or like part comprising a press frame adapted to support a lower die, a carrier for an upper die slidable vertically on the frame, means for raising and lowering the carrier relative to the frame, means for exerting clamping pressure between the upper and lower dies after the carrier has been lowered whereby upward force is applied to the carrier, and means for locking the carrier to the frame against upward motion from its lower position prior to application of such clamping pressures.
  • the locking means comprises tongues on the frame, tongues on a part secured to the carrier, the latter tongues being so aligned with the inter-tongue spaces on the frame that they will pass through them as the carrier is raised and lowered, and a lock bar horizontally slidable on the 12 frame and having tongues so disposed that in one position of the bar they may abut the tongues of both said part and the frame, and that in another position of the bar they are so aligned with the inter-tongue space of said part that the latter part may pass them.
  • Apparatus according to claim 20 having a slide movable vertically on the frame, and means for connecting the carrier and for adjusting it vertically with respect to the slide, the means for raising and lowering the carrie' relative to the frame being effective between the frame and the slide, and the locking means also being efiective between the frame and the slide.
  • the raising and lowering means comprise a pair of cranks rotatable on the frame
  • said resilient connection comprises two connecting rods respectively correcting the cranks to the carrier, each rod having two parts connected to each other for limited relative sliding motion to thereby change the effective length of the rod, and resilient means acting between said par-ts to yieldably hold them in one limit position relative to each other.
  • Apparatus for quench hardening a ring gear or like part comprising dies between which the part may be confined while being quenched, a quenching system for applying a fluid quenching medium to the part while it is between said dies, means for exerting pressure on the dies for clamping the part between them, and a control system for said quenching system and for applying and releasing said pressure exerting means, said control system comprising means for causing the release and reapplication of said pressure exerting means to occur during and in predetermined time relationship to the quenching of the part by the quenching system, to thereby enable the part to shift relative to the dies in response to its thermal contraction resulting from such quenching.
  • control system includes an adjustable means for controlling the time interval between the initiation of quenching of the part by the quenching system and said releasing of the pressure exerting means during the course of quenching.
  • Apparatus according to claim 25 in which said control system includes means to effect repeated release and reapplication of pressure on the dies during the course of quenching of the part.
  • control system includes a means which is adjustable to change the frequency of such repetitions.
  • control system includes a means. which is adjustable to change the number of such repetitions occurring during the course of said quenching of the part.

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  • Chemical & Material Sciences (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
US710882A 1958-01-24 1958-01-24 Method and apparatus for quench hardening Expired - Lifetime US3007823A (en)

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US710882A US3007823A (en) 1958-01-24 1958-01-24 Method and apparatus for quench hardening
GB1394/59A GB897809A (en) 1958-01-24 1959-01-14 An improved method and apparatus for quench hardening
CH6868259A CH371141A (fr) 1958-01-24 1959-01-23 Procédé pour tremper une pièce annulaire et machine pour la mise en oeuvre de ce procédé

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170975A (en) * 1960-06-30 1965-02-23 Gleason Works Quenching machine
US3239202A (en) * 1960-06-30 1966-03-08 Gleason Works Quenching machine
US3334882A (en) * 1964-06-18 1967-08-08 Eaton Yale & Towne Quenching die
US4360189A (en) * 1980-07-28 1982-11-23 Duncan James P Quench press
US4844427A (en) * 1988-02-01 1989-07-04 The Gleason Works Quenching apparatus
US20090126835A1 (en) * 2007-11-15 2009-05-21 Sterling Engineering And Manufacturing Company, Inc. Quenching methods and apparatus
WO2010094735A3 (fr) * 2009-02-19 2011-01-20 Ema Indutec Gmbh Machine de trempe et procédé de durcissement sous contrainte par induction
US20130177860A1 (en) * 2011-12-22 2013-07-11 Ipsen, Inc. Quenching Chamber with an Integral Access Door
CN103498029A (zh) * 2013-09-29 2014-01-08 北京京诚凤凰工业炉工程技术有限公司 棒材淬火装置
US10174395B2 (en) 2015-10-15 2019-01-08 The Boeing Company Interference fit quench plug assembly and methods for use thereof
CN112322863A (zh) * 2020-10-16 2021-02-05 东风德纳车桥有限公司 异形从动锥齿轮全自动压淬工装
CN112442580A (zh) * 2020-12-04 2021-03-05 新疆大学 双涡旋淬火设备
CN113699332A (zh) * 2021-09-02 2021-11-26 江苏百安科技有限公司 一种汽车发动机活塞加工用淬火设备
CN115011787A (zh) * 2022-06-17 2022-09-06 温州大学 一种定位夹紧装置、激光喷丸系统及激光喷丸方法
CN115679067A (zh) * 2022-11-01 2023-02-03 江苏伟鑫热处理设备有限公司 一种工件热处理用夹持装置

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CN113462861A (zh) * 2021-06-21 2021-10-01 西安法士特汽车传动有限公司 一种薄壁类零件的扩张式压淬模具
CN114480802B (zh) * 2022-01-26 2023-10-17 罡阳轴研科技(灌云)有限公司 一种用于淬火的工业模具

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US1214949A (en) * 1913-05-16 1917-02-06 William J Perry Machine for hardening articles.
US1364706A (en) * 1919-01-23 1921-01-04 Tracy V Buckwalter Apparatus for chilling bearings
US1513974A (en) * 1923-02-12 1924-11-04 Timken Roller Bearing Co Quenching apparatus
US2068913A (en) * 1935-12-02 1937-01-26 Hendrick J Gregg Centrifugal quenching
US2080924A (en) * 1935-12-19 1937-05-18 Bristol Company Automatic terminator for cycle control systems
US2662537A (en) * 1947-04-09 1953-12-15 Tubular Rivet And Stud Company Die quenching apparatus
US2860077A (en) * 1955-12-22 1958-11-11 Gleason Works Quench hardening method and machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1214949A (en) * 1913-05-16 1917-02-06 William J Perry Machine for hardening articles.
US1364706A (en) * 1919-01-23 1921-01-04 Tracy V Buckwalter Apparatus for chilling bearings
US1513974A (en) * 1923-02-12 1924-11-04 Timken Roller Bearing Co Quenching apparatus
US2068913A (en) * 1935-12-02 1937-01-26 Hendrick J Gregg Centrifugal quenching
US2080924A (en) * 1935-12-19 1937-05-18 Bristol Company Automatic terminator for cycle control systems
US2662537A (en) * 1947-04-09 1953-12-15 Tubular Rivet And Stud Company Die quenching apparatus
US2860077A (en) * 1955-12-22 1958-11-11 Gleason Works Quench hardening method and machine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170975A (en) * 1960-06-30 1965-02-23 Gleason Works Quenching machine
US3239202A (en) * 1960-06-30 1966-03-08 Gleason Works Quenching machine
US3334882A (en) * 1964-06-18 1967-08-08 Eaton Yale & Towne Quenching die
US4360189A (en) * 1980-07-28 1982-11-23 Duncan James P Quench press
US4844427A (en) * 1988-02-01 1989-07-04 The Gleason Works Quenching apparatus
US20090126835A1 (en) * 2007-11-15 2009-05-21 Sterling Engineering And Manufacturing Company, Inc. Quenching methods and apparatus
US8034285B2 (en) * 2007-11-15 2011-10-11 Sterling Engineering And Manufacturing Company, Inc. Quenching methods and apparatus
WO2010094735A3 (fr) * 2009-02-19 2011-01-20 Ema Indutec Gmbh Machine de trempe et procédé de durcissement sous contrainte par induction
US20130177860A1 (en) * 2011-12-22 2013-07-11 Ipsen, Inc. Quenching Chamber with an Integral Access Door
CN103498029A (zh) * 2013-09-29 2014-01-08 北京京诚凤凰工业炉工程技术有限公司 棒材淬火装置
CN103498029B (zh) * 2013-09-29 2015-04-29 北京京诚凤凰工业炉工程技术有限公司 棒材淬火装置
US10174395B2 (en) 2015-10-15 2019-01-08 The Boeing Company Interference fit quench plug assembly and methods for use thereof
US10669605B2 (en) 2015-10-15 2020-06-02 The Boeing Company Interference fit quench plug assembly and methods for use thereof
CN112322863A (zh) * 2020-10-16 2021-02-05 东风德纳车桥有限公司 异形从动锥齿轮全自动压淬工装
CN112442580A (zh) * 2020-12-04 2021-03-05 新疆大学 双涡旋淬火设备
CN113699332A (zh) * 2021-09-02 2021-11-26 江苏百安科技有限公司 一种汽车发动机活塞加工用淬火设备
CN115011787A (zh) * 2022-06-17 2022-09-06 温州大学 一种定位夹紧装置、激光喷丸系统及激光喷丸方法
CN115011787B (zh) * 2022-06-17 2024-02-27 温州大学 一种定位夹紧装置、激光喷丸系统及激光喷丸方法
CN115679067A (zh) * 2022-11-01 2023-02-03 江苏伟鑫热处理设备有限公司 一种工件热处理用夹持装置

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Publication number Publication date
CH371141A (fr) 1963-08-15
GB897809A (en) 1962-05-30

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