CN111394557B - Vacuum heat treatment equipment and process for cutter - Google Patents

Vacuum heat treatment equipment and process for cutter Download PDF

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Publication number
CN111394557B
CN111394557B CN202010336372.7A CN202010336372A CN111394557B CN 111394557 B CN111394557 B CN 111394557B CN 202010336372 A CN202010336372 A CN 202010336372A CN 111394557 B CN111394557 B CN 111394557B
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groove
heat treatment
clamping
supporting
annular cutter
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CN111394557A (en
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黄忠明
吴文海
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Nanjing Hongbao Machine Tool Co ltd
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Nanjing Hongbao Machine Tool Co ltd
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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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
    • 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
    • C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools

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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)
  • Furnace Details (AREA)

Abstract

The invention relates to a vacuum heat treatment device and a vacuum heat treatment process for a cutter, which relate to the technical field of cutter processing and aim to solve the problems that the conventional annular cutter is easy to wear and reduce the surface quality in the heat treatment process; the heat treatment equipment comprises a vacuum furnace body, a vacuum heat insulation chamber, a vacuum heat insulation door, a heating device, a cooling device and a vacuum unit, wherein a seat bed is arranged in the vacuum furnace body, a track groove is formed in the seat bed, the track groove extends along the length direction of the vacuum furnace body, the seat bed is provided with a material frame in a matching manner, a support leg and a travelling wheel are arranged on the material frame, a support plate is arranged on the bottom wall of the track groove in a sliding manner, and an automatic pressing part and an automatic lifting resetting part are arranged on the seat bed; the heat treatment process comprises cleaning the annular cutter, framing the annular cutter, loading the annular cutter into a furnace, performing heat treatment and cooling. The invention enables the annular cutter to be stably conveyed into heat treatment equipment for parallel and stable heat treatment, thereby improving the surface quality of the annular cutter; and the annular cutter has uniform hardness and high performance after heat treatment.

Description

Vacuum heat treatment equipment and process for cutter
Technical Field
The invention relates to the technical field of cutter processing, in particular to a vacuum heat treatment device and a vacuum heat treatment process for cutters.
Background
The cutter is a common tool in daily life and industrial production, is generally prepared by forging and forming metal and then performing heat treatment, and has different shapes for different purposes.
As shown in fig. 1, the annular cutter 8 mainly includes an annular cutter body 81 and a blade 82 disposed inside the annular cutter body 81, and the peripheral wall of the outer wall of the annular cutter body 81 and the outer straight side wall are straight smooth side walls to ensure the normal assembly and practicality of the annular cutter 8.
However, since the tool needs to be heat-treated after forging, the surface of the annular tool is damaged if the annular tool is improperly placed and hot-worked during the transportation of the annular tool to the heat treatment equipment and the heat treatment of the annular tool, and the surface quality of the annular tool is further affected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the vacuum heat treatment equipment and the vacuum heat treatment process for the cutter, so that the annular cutter can be stably conveyed into the heat treatment equipment, and meanwhile, the annular cutter can be stably thermally treated in the heat treatment equipment, so that the surface quality of the annular cutter is improved; under the vacuum heat treatment process condition, the annular cutter has less surface oxidation, uniform hardness and high performance after heat treatment.
The above object of the present invention is achieved by the following technical solutions:
a vacuum heat treatment device for a cutter comprises a vacuum furnace body, a vacuum heat insulation chamber arranged in the vacuum furnace body, a vacuum heat insulation door arranged at one end of the vacuum furnace body, a heating device, a cooling device and a vacuum unit which are arranged on the vacuum furnace body, a seat bed is arranged in the vacuum furnace body, at least two rail running grooves are arranged on the seat bed and extend along the length direction of the vacuum furnace body, one end of the track groove close to the vacuum heat insulation door penetrates through the sitting bed, the sitting bed is provided with a material frame in a matching way, the lower surface of the material frame is provided with supporting legs, the bottom ends of the supporting legs are rotatably provided with traveling wheels, supporting plates are arranged on the bottom walls of the rail traveling grooves in a sliding manner along the vertical direction, the travelling wheels are in rolling connection with the upper surfaces of the supporting plates, the sitting bed is provided with an automatic pressing piece for driving the supporting plates to move downwards, and the sitting bed is also provided with an upward-lifting resetting piece for driving the supporting plates to move upwards; when the supporting plate moves to the top end point, the lower surface of the material frame is far away from the upper surface of the sitting bed; when the supporting plate moves to the bottom end point, the lower surface of the material frame is abutted to the lower surface of the sitting bed.
By adopting the technical scheme, the travelling wheels slide on the travelling rail grooves, the material frame stably slides on the sitting bed under the limiting action of the travelling rail grooves and the supporting action of the supporting plates, and the automatic pressing piece is triggered as the material frame slides on the sitting bed, so that the supporting plate stably drives the material frame to descend for a certain distance, the lower surface of the material frame can stably support against the upper surface of the sitting bed, the annular cutter can be stably placed in the vacuum heat insulation chamber to be stably thermally treated, after the thermal treatment is finished, the upper lifting reset piece lifts the supporting plate, after the supporting plate returns to the original position, the lower surface of the material frame is far away from the upper surface of the sitting bed, so that the material frame can smoothly slide down the sitting bed with the annular cutter, therefore, the vacuum heat treatment equipment in the invention can smoothly convey the annular cutter to the heat treatment equipment, and meanwhile, the annular cutter is subjected to stable heat treatment in heat treatment equipment, so that the surface quality of the annular cutter is improved.
The invention is further provided with a lifting groove arranged at the bottom end of the traveling rail groove, and the supporting plate is arranged in the lifting groove in a sliding manner along the vertical direction; the automatic pressing piece comprises a trigger block, a trigger resisting wheel, a linkage block, a clamping base block, a clamping head and a positioning spring, wherein a trigger sliding groove is formed in one end, away from the vacuum heat insulation door, of the rail moving groove along the horizontal direction, the trigger block is arranged on the wall of the trigger sliding groove in a sliding mode along the length direction of the vacuum furnace body, the trigger resisting wheel is rotatably arranged at one end, extending into the rail moving groove, of the trigger block, and the trigger resisting wheel is abutted to the end wall of the supporting leg; a clamping cavity groove is formed in the end, far away from the triggering abutting wheel, of the triggering sliding groove in an extending mode, a linkage sliding groove communicated with the lifting groove is formed in the bottom wall of the clamping cavity groove, the linkage block is fixedly arranged on the end wall of the supporting plate and is arranged in the linkage sliding groove in a sliding mode along the vertical direction, the clamping block is arranged at one end, extending into the clamping cavity groove, of the linkage block, and a clamping groove is formed in a concave mode in one end, far away from the rail moving groove, of the clamping block; the clamping base block is arranged on the wall of the clamping cavity groove in a sliding mode along the length direction of the rail groove, the upper portion of the clamping base block is higher than the clamping base block, the lower portion of the clamping base block is opposite to one end, away from the rail groove, of the clamping base block, one end, extending into the clamping cavity groove, of the trigger block is fixedly connected with the top end of the clamping base block, the clamping head is arranged on the side wall, opposite to the clamping base block and the clamping base block, of the top wall of the clamping groove, the end, away from the rail groove, of the top wall of the clamping groove is a horizontal wall, one side, away from the horizontal wall, of the top wall of the clamping groove is inclined downwards along the end, close to the rail groove, of the top wall of the clamping groove; when the positioning spring is in a natural state, the clamping head is clamped with the clamping groove, the triggering support wheel extends into the rail running groove to the maximum extent, and the supporting plate is located at the end point of the top end.
By adopting the technical scheme, the positioning spring enables the clamping head to be inserted into the clamping groove, and meanwhile, under the supporting action of the clamping groove and the horizontal end wall of the clamping head, the supporting plate is fixed at the end point of the top end, so that the travelling wheel is supported; the end wall of the material frame can gradually abut against the triggering abutting wheel along with the gradual sliding of the material frame on the sitting bed, so that the clamping base block is gradually pushed to be far away from the rail running groove by taking the triggering block as a medium, the clamping head is gradually taken away from the clamping groove, the clamping block gradually moves downwards along the inclined walls of the clamping head and the clamping groove, the triggering abutting wheel abuts against the end wall of the material frame and rolls, the supporting plate also gradually moves downwards under the action of the gravity of the material frame and the annular cutter until the supporting plate moves downwards to a terminal point, the lower surface of the material frame is seated on the upper surface of the sitting bed, the positioning spring is compressed, and the annular cutter normally carries out heat treatment; after the heat treatment is finished, the upward lifting reset piece can drive the supporting plate and the material frame to move upwards, after the supporting plate recovers the original height, the material frame slides down to sit on the bed, in the process, the positioning spring returns the clamp to the original position, the clamp head is clamped with the clamping groove again, the upward lifting reset piece also stops working, the work of the upward lifting reset piece is reduced while the material frame is enabled to move downwards automatically and stably, and energy is saved.
The lifting reset piece comprises a push plate, a driving rod and a guide rod, the push plate is arranged on the wall of a lifting groove in a sliding mode along the vertical direction and is positioned below a supporting plate, the side, away from a vacuum heat insulation door, of the supporting plate is provided with the guide groove in a penetrating mode along the vertical direction, the side, close to the vacuum heat insulation door, of the push plate is provided with a feeding groove in a penetrating mode along the vertical direction, the guide rod is fixedly arranged on the bottom wall of the lifting groove and is connected with the guide groove in a sliding mode along the vertical direction, the lower surface of the push plate is provided with a first abdicating groove inserted with the top end of the guide rod, the driving rod rotates on the bottom wall of the lifting groove, the driving rod is in threaded connection with the feeding groove, the lower surface of the supporting plate is provided with a second abdicating groove inserted with the top end of the driving rod, and a driving device for driving the driving rod to rotate is further arranged on the seat bed.
By adopting the technical scheme, under the guiding action of the guide rod and the guide groove, the push plate can only move in the vertical direction, so that after the driving rod rotates, the driving rod can rotate in a thread manner with the feeding groove, the push plate can perform thread feeding on the driving rod in the vertical direction, and the push plate can push the supporting plate to return to the original height; simultaneously, in the process that the push plate moves, the driving rod and the guide rod are higher than the supporting plate, and can move in the second yielding groove and the first yielding groove without interfering with the supporting plate.
The material frame further comprises a bottom plate and a plurality of placing plates, a plurality of main supporting columns are arranged on the upper surface of the bottom plate, auxiliary supporting columns are arranged on the upper surface of the placing plates, placing cavities are formed between the bottom plate and the placing plates and between adjacent placing plates, the main supporting columns and the auxiliary supporting columns are detachably connected with the placing plates, and adjusting pieces for adjusting the heights of the placing cavities are arranged between the main supporting columns and the auxiliary supporting columns and between adjacent placing plates.
By adopting the technical scheme, the straight side wall of the cutter is placed on the placing plate or the bottom plate, so that the cutter is stably supported, and meanwhile, the main supporting column and the auxiliary supporting column can be arranged in the inner ring of the cutter in a penetrating manner, so that the cutter can be limited in the horizontal direction; meanwhile, the height of the placing cavity can be adjusted by the adjusting piece, so that cutters with different axial heights can be placed on the material frame.
The adjusting piece comprises adjusting support grooves arranged on the upper surfaces of the main support column and the auxiliary support column, adjusting support blocks inserted in the adjusting support grooves and adjusting support rods arranged on the lower surface of the placing plate, the adjusting support rods are attached to the adjusting support grooves in an inserted mode, and the bottom ends of the adjusting support rods are abutted to the upper surfaces of the adjusting support blocks.
Through adopting above-mentioned technical scheme, the regulation bracer of equidimension not is placed in adjusting the tributary slot, can occupy the space of not equidimension in adjusting the tributary slot to can change the volume that adjusting branch inserted in adjusting the tributary slot, make adjusting branch can stretch out the different height of adjusting the tributary slot, can adjust and place the distance between board and bottom plate and the adjacent board of placing, change the size of placing the chamber.
The invention is further provided with a seating groove which is concavely arranged on the upper surfaces of the bottom plate and the placing plate, an adjusting frame is inserted in the seating groove, the outer peripheral wall of the adjusting frame is abutted with the seating groove in a fitting manner, and the main support column and the auxiliary support column are inserted in an inner frame wall of the adjusting frame in a fitting manner.
Through adopting above-mentioned technical scheme, the regulation frame of different horizontal thickness of replacement for main dagger and the vice dagger of different thickness can steadily peg graft in adjusting the frame, thereby can change the distance between adjacent main dagger or the vice dagger, make and place the cutter that can place different diameters size in the chamber.
The invention is further provided that one end of the supporting leg opposite to the triggering abutting wheel is provided with a limiting groove, the limiting groove extends along the vertical direction, and the triggering abutting wheel is in rolling connection with the limiting groove.
Through adopting above-mentioned technical scheme, trigger and support wheel and spacing groove butt to roll in the spacing groove, thereby support the wheel to triggering and lead, make the material frame can more steadily horizontal migration and vertical migration.
The invention is further provided that the upper surface of the push plate is provided with a buffer pressure pad.
Through taking above-mentioned technical scheme, leave the draw-in groove gradually at the dop, when the fagging removed the bottom gradually, the fagging in advance with cushion the contact of pressure, can reduce the vibration of work or material rest when sitting on the bed, reduce annular cutter's wearing and tearing.
The invention is further provided with a support block which is convexly arranged on the upper surface of the adjusting support block, a slot which is concavely arranged at the bottom end of the adjusting support rod, and the support block is jointed and spliced with the slot.
Through adopting above-mentioned technical scheme, the piece is pegged graft with the slot, can realize spacing the level of adjusting branch in adjusting the brace groove, reduces the stress action of adjusting branch and adjusting brace groove spare, and the piece protrusion and the regulation bracer of brace simultaneously conveniently will adjust the bracer and take out the regulation brace groove.
The invention also aims to provide a vacuum heat treatment process for the cutter, which comprises the following steps:
cleaning an annular cutter:
cleaning dirt on the surface of the annular cutter;
the method is characterized by further comprising the following steps:
framing the annular cutter:
according to the specification and the size of the annular cutter, the size of a material frame placing cavity is adjusted, the straight side wall end of the annular cutter is placed on the bottom plate of the material frame and the straight bearing surface of the placing plate, and the inner ring wall of the annular cutter is sleeved on the outer side of the main support column or the auxiliary support column;
feeding an annular cutter into a furnace:
moving the material frame to the inlet of the vacuum furnace body to enable the travelling wheels to be opposite to the upper surfaces of the supporting plates, enabling the travelling wheels to slide on the supporting plates, moving the supporting plates downwards after the material frame completely moves onto the sitting bed, enabling the material frame to sit on the sitting bed, closing the vacuum heat insulation door, and completing the feeding of the annular cutter to the furnace;
and (3) heat treatment: adjusting the pressure in the vacuum insulation chamber to 6.9 x 10-2-7.1×10-2The temperature of the vacuum heat insulation chamber is increased to 790-fold-800 ℃ within Pa, 2h, and then the temperature is kept for 1 h;
and (3) cooling: and after the heat treatment is finished, cooling the annular cutter to 250 ℃ along with the furnace at a cooling speed of 5.2-6.3 ℃/min, and finally discharging and air cooling to obtain the finished annular cutter.
By adopting the technical scheme, the prepared annular cutter has good surface quality, excellent strength and high performance.
In conclusion, the beneficial technical effects of the invention are as follows:
1. according to the heat treatment equipment, after the material frame slides on the sitting bed along the rail groove, the lower surface of the material frame can be automatically and stably abutted against the upper surface of the sitting bed, so that the annular cutter can be stably placed in the vacuum heat insulation chamber to be stably thermally treated, and the surface quality of the annular cutter is improved;
2. the material frame is provided with a plurality of placing cavities with adjustable sizes, so that annular cutters with different specifications are placed, and the annular cutters are placed independently, so that the annular cutters are heated uniformly;
3. under the process condition of the invention, the prepared annular cutter has good surface quality, excellent strength and high performance.
Drawings
Fig. 1 is a schematic view of the structure of a ring cutter.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a cross-sectional view of a spreader structure embodying the present invention.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is an exploded view of a material frame structure embodying the present invention.
Fig. 6 is a sectional view of a material frame structure embodying the present invention.
Reference numerals: 1. a vacuum furnace body; 11. a vacuum insulation chamber; 12. a vacuum insulated door; 13. a heating device; 14. a cooling device; 15. a vacuum unit; 2. sitting on a bed; 3. a rail-moving groove; 31. a supporting plate; 32. a lifting groove; 4. material frame; 41. a base plate; 42. placing the plate; 43. a main stay; 44. a secondary bracing strut; 45. a placement chamber; 46. an adjustment member; 461. adjusting the branch groove; 462. adjusting the supporting block; 6421. supporting a block; 6422. a slot; 463. adjusting the supporting rod; 47. a seating groove; 471. an adjusting frame; 5. a traveling wheel; 51. a support leg; 6. automatic pressing down of the workpiece; 61. a trigger block; 611. triggering the chute; 62. triggering a supporting wheel; 621. a limiting groove; 63. a linkage block; 631. a linkage chute; 64. a clamping block; 65. a card base block; 651. clamping a cavity groove; 66. clamping a head; 661. a card slot; 67. a positioning spring; 7. lifting the reset piece; 71. pushing the plate; 711. a cushion pad; 72. a drive rod; 721. a feed slot; 722. a second abdicating groove; 73. a guide bar; 731. a guide groove; 732. a first abdicating groove; 74. a drive device; 8. an annular cutter; 81. an annular cutter body; 82. a blade.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
the invention discloses a vacuum heat treatment device for a cutter, which comprises a vacuum furnace body 1, a vacuum heat insulation chamber 11 arranged in the vacuum furnace body 1, a vacuum heat insulation door 12 rotatably arranged at one end of the vacuum furnace body 1, a heating device 13, a cooling device 14 and a vacuum unit 15 which are arranged on the vacuum furnace body 1, wherein after the vacuum heat insulation door 12 is opened, an annular cutter 8 is placed in the vacuum heat insulation chamber 11, then the vacuum heat insulation door 12 is closed, the heating device 13 and the vacuum unit 15 are started, and the annular cutter 8 is subjected to heat treatment; and after the heat treatment is finished, starting the cooling device 14 and the vacuum unit 15, adjusting the pressure intensity in the vacuum heat insulation chamber 11, cooling the annular cutter 8, and after the cooling is finished, opening the vacuum heat insulation door 12 and taking out the annular cutter 8.
As shown in fig. 2 and fig. 3, in the present embodiment, a sitting bed 2 is further installed in the vacuum furnace body 1, two track grooves 3 are concavely arranged on the upper surface of the sitting bed 2, both track grooves 3 extend along the length direction of the vacuum furnace body 1, and one end of the track groove 3 close to the vacuum heat insulation door 12 penetrates through the sitting bed 2, the sitting bed 2 is provided with a material frame 4 in a matching way, the material frame 4 is used for containing a ring-shaped cutter 8, four corners of the lower surface of the material frame 4 are respectively and integrally connected with supporting legs 51, the bottom ends of the supporting legs 51 are rotatably provided with travelling wheels 5, the bottom wall of the track groove 3 is provided with a lifting groove 32 along the vertical direction in a concave way, a supporting plate 31 is arranged in the lifting groove 32 along the vertical direction in a sliding way, the travelling wheels 5 are connected with the upper surface of the supporting plate 31 in a rolling way, the travelling wheel 5 is positioned in the travelling rail groove 3, the sitting bed 2 is provided with an automatic pressing piece 6 for driving the supporting plate 31 to move downwards, and the sitting bed 2 is also provided with an upward lifting reset piece 7 for driving the supporting plate 31 to move upwards. In an initial state, the supporting plate 31 moves to a top end point, the annular cutter 8 is placed on the material frame 4, the material frame 4 is pushed onto the seat bed 2, the lower surface of the material frame 4 is far away from the upper surface of the seat bed 2, and the travelling wheel 5 rolls on the supporting plate 31; when the material frame 4 is to be moved to the fixed position of the sitting bed 2, the automatic pressing piece 6 is triggered, the supporting plate 31 gradually moves downwards, when the supporting plate 31 moves to the bottom end point, the lower surface of the material frame 4 is just abutted against the lower surface of the sitting bed 2, and the annular cutter 8 can perform stable heat treatment in the vacuum heat insulation chamber 11; after the heat treatment is finished, the lifting reset piece 7 is started, the lifting reset piece 7 drives the supporting plate 31 to move upwards, the lower surface of the material frame 4 is separated from the upper surface of the seat bed 2, then the material frame 4 is pulled, after the material frame 4 moves towards the vacuum heat insulation door 12 for a certain distance, the automatic pressing piece 6 is automatically restored to an unfired state to position the supporting plate 31, the lifting reset piece 7 is restored to an original state at the moment, and finally the material frame 4 is continuously pulled, and the annular cutter 8 is taken out of the vacuum furnace body 1.
As shown in fig. 3 and 4, the automatic pressing member 6 includes a trigger block 61, a trigger abutting wheel 62, a linkage block 63, a locking block 64, a clamping block 65, a clamping head 66 and a positioning spring 67, wherein one end of the rail moving groove 3 away from the vacuum heat insulation door 12 is provided with a trigger sliding groove 611 in a recessed manner along the horizontal direction, one end of the trigger sliding groove 611 away from the trigger abutting wheel 62 is provided with a clamping cavity groove 651 in an extending manner, and a linkage sliding groove 631 communicating with the lifting groove 32 is arranged on the bottom wall of the clamping cavity groove 651. Trigger block 61 slides along the length direction of vacuum furnace body 1 and sets up on triggering spout 611 cell wall, triggers to support the wheel 62 and rotate the setting and stretch into the one end of walking in the rail groove 3 at trigger block 61, and in this embodiment, landing leg 51 supports the wheel 62 relative one end with triggering and is provided with along the spacing groove 621 that vertical direction extends, triggers to support wheel 62 and spacing groove 621 and roll the butt along vertical direction. The linkage block 63 is fixedly arranged on the end wall of the supporting plate 31 and is arranged in the linkage sliding groove 631 in a sliding mode along the vertical direction, the clamping block 64 is integrally connected to one end, extending into the clamping cavity groove 651, of the linkage block 63, and a clamping groove 661 is arranged at one end, deviating from the rail moving groove 3, of the clamping block 64 in a concave mode. The clamping base block 65 is arranged on the top wall of the clamping cavity groove 651 in a sliding mode along the length direction of the rail moving groove 3, the upper portion of the clamping base block 65 is higher than the clamping block 64, the lower portion of the clamping base block 65 is opposite to one end, away from the rail moving groove 3, of the clamping block 64, one end, extending into the clamping cavity groove 651, of the trigger block 61 is integrally connected with the top end of the clamping base block 65, the clamping head 66 is fixedly arranged on the side wall, opposite to the clamping block 64, of the clamping base block 65, one end, away from the rail moving groove 3, of the top wall of the clamping groove 661 is a horizontal wall, one side, away from the horizontal wall, of the top wall of the clamping groove 661 inclines downwards along one end, close to the rail moving groove 3, and the clamping head 66 is attached to and spliced with the clamping groove 661; the positioning spring 67 is fixedly disposed between a side wall of the card base block 65 away from the chuck 66 and a wall of the card cavity 651.
As shown in fig. 3 and 4, in the initial state, the positioning spring 67 is in a natural state, the chucking head 66 is pushed into the notch 661, and the chucking head 66 abuts against the flat side wall of the notch 661, so that the stay plate 31 is supported at the top end point while the link block 63 is fitted into a part of the tracking groove 3; after the travelling wheel 5 slides on the supporting plate 31, the supporting plate 31 is not moved when the supporting leg 51 is not contacted with the triggering abutting wheel 62; when the material frame 4 is about to move to the end point of the sitting bed 2, the limiting groove 621 of the supporting leg 51 abuts against the triggering resisting wheel 62, the linkage block 63 is gradually pushed into the clamping cavity groove 651 along with the movement of the material frame 4, so that the clamping head 66 is driven by the clamping base block 65 to gradually leave the clamping groove 661, the clamping block 64, the linkage block 63 and the supporting plate 31 gradually move downwards, in the process, the triggering resisting wheel 62 rotates in the limiting groove 621, finally the supporting plate 31 moves to the lowest end, the lower surface of the material frame 4 is located on the upper surface of the sitting bed 2, the vacuum heat insulation door 12 is closed, and heat treatment is started; after the heat treatment is finished, the reset part 7 is lifted in the starting process, the supporting plate 31 is pushed upwards, the supporting plate 31 returns to the top end point, the lower surface of the material frame 4 leaves the lower surface of the seat bed 2, then the material frame 4 is pulled out of the vacuum heat insulation chamber 11, the positioning spring 67 gradually pushes the clamping groove 661 again along with the movement of the material frame 4 to the direction of the vacuum heat insulation door 12 until the clamping head 66 is completely inserted into the clamping groove 661, the supporting effect of the reset part 7 can be relieved at the moment, and then the material frame 4 is pulled continuously.
As shown in fig. 3, the uplifting reset piece 7 comprises a push plate 71, a driving rod 72 and a guide rod 73, wherein the push plate 71 is slidably arranged on the groove wall of the lifting groove 32 along the vertical direction and is positioned below the supporting plate 31, and a buffer pressure pad 711 is arranged on the upper surface of the push plate 71; a guide groove 731 is arranged on one side of the push plate 71, which is far away from the vacuum heat insulation door 12, in a penetrating manner along the vertical direction, a guide rod 73 is fixedly arranged on the bottom wall of the lifting groove 32, and the guide rod 73 is fixedly connected with the guide groove 731 in a sliding manner along the vertical direction; a feed slot 721 is vertically and penetratingly formed at one side of the push plate 71 adjacent to the vacuum insulation door 12, the driving rod 72 is rotated on the bottom wall of the elevation slot 32, and the driving rod 72 is screw-coupled to the feed slot 721. In order to prevent the guide rod 73 and the driving rod 72 from interfering with each other between the top end of the push rod and the supporting plate 31, in this embodiment, the lower surface of the supporting plate 31 is provided with a first abdicating groove 732 inserted into the top end of the guide rod 73, the lower surface of the supporting plate 31 is provided with a second abdicating groove 722 inserted into the top end of the driving rod 72, the seat bed 2 is further provided with a driving device 74 for driving the driving rod 72 to rotate, the driving device 74 is a high-temperature motor arranged on the outer side wall of the seat bed 2, a driving gear arranged at the driving end of the high-temperature motor, and a linkage gear arranged on the circumferential wall of the. The driving device 74 is activated to rotate the driving rod 72, and the pushing plate 71 is threaded on the driving rod 72 under the guiding action of the guiding rod 73 and the guiding groove 731, so that the pushing plate 71 can push the supporting plate 31 to move upwards.
As shown in fig. 5 and 6, the material frame 4 in this embodiment includes a first layer of bottom plate 41 and a second layer of placing plate 42, four seating grooves 47 are respectively uniformly distributed on the upper surface of the bottom plate 41 and the upper surface of the placing plate 42, an adjusting frame 471 is inserted into the seating grooves 47, the outer peripheral wall of the adjusting frame 471 is abutted to the seating grooves 47, a main supporting column 43 is inserted into the inner frame wall of the adjusting frame 471 on the base, an auxiliary supporting column 44 is inserted into the inner frame wall of the adjusting frame 471 on the placing plate 42, placing cavities 45 are formed between the bottom plate 41 and the placing plate 42 and between the adjacent placing plates 42, and adjusting members 46 for adjusting the height of the placing cavity 45 are provided between the main supporting column 43 and the auxiliary supporting column 44 and the adjacent placing plate 42. The annular cutter 8 is sleeved outside the main supporting column 43, the straight side wall of the annular cutter 8 is placed on the bottom plate 41, after four annular cutters 8 are placed, the adjusting piece 46 is used for placing the plate 42 on the top end of the main supporting column 43, the cavity 45 is placed and adjusted to a proper size, then the new annular cutter 8 is sleeved outside the auxiliary supporting column 44, the straight side wall of the annular cutter 8 is placed on the placing plate 42, the next placing plate is installed on the top end of the auxiliary supporting column 44 by using the adjusting piece 46, the cavity 45 is placed and adjusted to a proper size, the annular cutter 8 is continuously placed, and the process is repeated until all the annular cutters 8 are placed on the material frame 4.
As shown in fig. 6, the adjusting member 46 includes an adjusting support slot 461 disposed on the upper surface of the main support column 43 and the sub support column 44, an adjusting support 462 inserted into the adjusting support slot 461, and an adjusting support 463 disposed on the lower surface of the placing plate 42, the adjusting support 463 is inserted into the adjusting support slot 461, and the bottom end of the adjusting support 463 abuts against the upper surface of the adjusting support 462; in this embodiment, the adjusting supporting block 462 is provided with a supporting block 6421 protruding from the upper surface thereof, and the adjusting support 463 is provided with a slot 6422 recessed from the bottom end thereof. When the placing plate 42 is installed, the adjusting supporting block 462 with a proper size is selected, the adjusting supporting block 462 is placed into the adjusting supporting groove 461, the adjusting supporting rod 463 is inserted into the adjusting supporting groove 461, the inserting groove 6422 is inserted into the supporting block 6421, the placing plate 42 can be installed at the moment, and meanwhile the size of the placing cavity 45 is adjusted.
The working process is as follows:
in an initial state, the clamping head 66 is in friction splicing with the clamping groove 661, the supporting plate 31 is fixed at the top end point, the annular cutter 8 is placed on the material frame 4, the material frame 4 is pushed onto the seat bed 2, the lower surface of the material frame 4 is far away from the upper surface of the seat bed 2 at the moment, and the travelling wheel 5 rolls on the supporting plate 31; when the material frame 4 is to be moved to the fixed position of the sitting bed 2, the limiting groove 621 on the supporting leg 51 is abutted to the triggering abutting wheel 62, the chuck 66 is gradually separated from the clamping groove 661, the supporting plate 31 is gradually moved downwards, when the supporting plate 31 is moved to the bottom end point, the lower surface of the material frame 4 is just abutted to the lower surface of the sitting bed 2, and the annular cutter 8 can be stably thermally treated in the vacuum heat insulation chamber 11; after the heat treatment is finished, the driving device 74 is positively rotated, so that the driving rod 72 and the feeding groove 721 are rotated in a threaded manner, the push plate 71 drives the supporting plate 31 to move upwards, the lower surface of the material frame 4 is separated from the upper surface of the seat bed 2, then the material frame 4 is pulled, after the material frame 4 moves towards the vacuum heat insulation door 12 for a certain distance, the clamping head 66 and the clamping groove 661 are re-inserted, then the driving device 74 is reversely rotated, the push plate 71 returns to the original bottom end position, finally, the material frame 4 is continuously pulled, and the annular cutter 8 is taken out of the vacuum furnace body 1.
Example two:
a vacuum heat treatment process for a cutter comprises the following steps:
cleaning the annular cutter 8:
cleaning dirt on the surface of the annular cutter 8 by using a cleaning agent (HQ-156 cleaning agent sold by Haoquan chemical Co., Ltd., Dongguan), wherein the annular cutter 8 is forged by W18Cr4V high-speed steel;
the annular cutter 8 is framed:
according to the specification and the size of the annular cutter 8, the size of a placing cavity 45 of the material frame 4 is adjusted, the straight side wall end of the annular cutter 8 is placed on the straight bearing surfaces of a bottom plate 41 and a placing plate 42 of the material frame 4, the inner annular wall of the annular cutter 8 is sleeved on the outer side of a main support column 43 or an auxiliary support column 44, the material frame 4 and the annular cutter are made of the same material, and the distance between the inner annular wall of the annular cutter 8 and the outer side wall of the main support column 43 or the auxiliary support column 44 is 8 cm;
feeding the annular cutter 8 into the furnace:
moving the material frame 4 to the inlet of the vacuum furnace body 1, enabling the travelling wheels 5 to be opposite to the upper surfaces of the supporting plates 31, enabling the travelling wheels 5 to slide on the supporting plates 31, enabling the supporting plates 31 to move downwards after the material frame 4 completely moves onto the sitting bed 2, enabling the material frame 4 to be located on the sitting bed 2, closing the vacuum heat insulation door 12, and completing the feeding of the annular cutter 8 to the furnace;
and (3) heat treatment: adjusting the pressure in the vacuum heat insulation chamber 11 to 6.9 multiplied by 10 < -2 > Pa, raising the temperature of the vacuum heat insulation chamber 11 to 790 ℃ within 2h, and then preserving the heat for 1 h;
and (3) cooling: after the heat treatment is finished, the annular cutter 8 is cooled to 250 ℃ along with the furnace, and the cooling speed is 5.2 ℃/min; after the annular cutter 8 is cooled to a specified temperature, the upward lifting reset piece 7 is started, the supporting plate 31 is driven to move upwards, the lower surface of the material frame 4 is enabled to be away from the upper surface of the seat bed 2, then the material frame 4 is pulled, after the material frame 4 moves towards the vacuum heat insulation door 12 for a certain distance, the clamping head 66 is plugged with the clamping groove 661 again, the lifting effect of the upward lifting reset piece 7 is removed, finally, the material frame 4 is continuously pulled, the annular cutter 8 is taken out of the vacuum furnace body 1 for air cooling, and finally, the finished annular cutter 8 is obtained.
Example three:
a vacuum heat treatment process for a cutter comprises the following steps:
cleaning the annular cutter 8:
cleaning dirt on the surface of the annular cutter 8 by using a cleaning agent (HQ-156 cleaning agent sold by Haoquan chemical Co., Ltd., Dongguan), wherein the annular cutter 8 is forged by W18Cr4V high-speed steel;
the annular cutter 8 is framed:
according to the specification and the size of the annular cutter 8, the size of a placing cavity 45 of the material frame 4 is adjusted, the straight side wall end of the annular cutter 8 is placed on the straight bearing surfaces of a bottom plate 41 and a placing plate 42 of the material frame 4, the inner annular wall of the annular cutter 8 is sleeved on the outer side of a main support column 43 or an auxiliary support column 44, the material frame 4 and the annular cutter are made of the same material, and the distance between the inner annular wall of the annular cutter 8 and the outer side wall of the main support column 43 or the auxiliary support column 44 is 8 cm;
feeding the annular cutter 8 into the furnace:
moving the material frame 4 to the inlet of the vacuum furnace body 1, enabling the travelling wheels 5 to be opposite to the upper surfaces of the supporting plates 31, enabling the travelling wheels 5 to slide on the supporting plates 31, enabling the supporting plates 31 to move downwards by the automatic pressing piece 6 after the material frame 4 completely moves onto the sitting bed 2, enabling the material frame 4 to sit on the sitting bed 2, closing the vacuum heat insulation door 12, and completing the furnace feeding of the annular cutter 8;
and (3) heat treatment: adjusting the pressure in the vacuum heat insulation chamber 11 to 7.0 x 10 < -2 > Pa, raising the temperature of the vacuum heat insulation chamber 11 to 795 ℃ within 2h, and then preserving the heat for 1 h;
and (3) cooling: after the heat treatment is finished, the annular cutter 8 is cooled to 250 ℃ along with the furnace, and the cooling speed is 5.2 ℃/min; after the annular cutter 8 is cooled to a specified temperature, the upward lifting reset piece 7 is started, the supporting plate 31 is driven to move upwards, the lower surface of the material frame 4 is enabled to be away from the upper surface of the seat bed 2, then the material frame 4 is pulled, after the material frame 4 moves towards the vacuum heat insulation door 12 for a certain distance, the clamping head 66 is plugged with the clamping groove 661 again, the lifting effect of the upward lifting reset piece 7 is removed, finally, the material frame 4 is continuously pulled, the annular cutter 8 is taken out of the vacuum furnace body 1 for air cooling, and finally, the finished annular cutter 8 is obtained.
Example four:
a vacuum heat treatment process for a cutter comprises the following steps:
cleaning the annular cutter 8:
cleaning dirt on the surface of the annular cutter 8 by using a cleaning agent (HQ-156 cleaning agent sold by Haoquan chemical Co., Ltd., Dongguan), wherein the annular cutter 8 is forged by W18Cr4V high-speed steel;
the annular cutter 8 is framed:
according to the specification and the size of the annular cutter 8, the size of a placing cavity 45 of the material frame 4 is adjusted, the straight side wall end of the annular cutter 8 is placed on the straight bearing surfaces of a bottom plate 41 and a placing plate 42 of the material frame 4, the inner annular wall of the annular cutter 8 is sleeved on the outer side of a main support column 43 or an auxiliary support column 44, the material frame 4 and the annular cutter are made of the same material, and the distance between the inner annular wall of the annular cutter 8 and the outer side wall of the main support column 43 or the auxiliary support column 44 is 8 cm;
feeding the annular cutter 8 into the furnace:
moving the material frame 4 to the inlet of the vacuum furnace body 1, enabling the travelling wheels 5 to be opposite to the upper surfaces of the supporting plates 31, enabling the travelling wheels 5 to slide on the supporting plates 31, enabling the supporting plates 31 to move downwards after the material frame 4 completely moves onto the sitting bed 2, enabling the material frame 4 to be located on the sitting bed 2, closing the vacuum heat insulation door 12, and completing the feeding of the annular cutter 8 to the furnace;
and (3) heat treatment: adjusting the pressure in the vacuum heat insulation chamber 11 to 7.1 multiplied by 10 < -2 > Pa, raising the temperature of the vacuum heat insulation chamber 11 to 800 ℃ within 2h, and then preserving the heat for 1 h;
and (3) cooling: after the heat treatment is finished, the annular cutter 8 is cooled to 250 ℃ along with the furnace, and the cooling speed is 5.2 ℃/min; after the annular cutter 8 is cooled to a specified temperature, the upward lifting reset piece 7 is started, the supporting plate 31 is driven to move upwards, the lower surface of the material frame 4 is enabled to be away from the upper surface of the seat bed 2, then the material frame 4 is pulled, after the material frame 4 moves towards the vacuum heat insulation door 12 for a certain distance, the clamping head 66 is plugged with the clamping groove 661 again, the lifting effect of the upward lifting reset piece 7 is removed, finally, the material frame 4 is continuously pulled, the annular cutter 8 is taken out of the vacuum furnace body 1 for air cooling, and finally, the finished annular cutter 8 is obtained.
Comparative example one:
a vacuum heat treatment process for a cutter comprises the following steps:
cleaning an annular cutter:
cleaning dirt on the surface of the annular cutter by using a cleaning agent (HQ-156 cleaning agent sold by Haoquan chemical industry Co., Ltd., Dongguan), wherein the annular cutter is forged by W18Cr4V high-speed steel;
feeding an annular cutter into a furnace:
placing an annular cutter on a flat-plate-type material rack, and then pushing the material rack into a vacuum heat insulation chamber;
and (3) heat treatment: adjusting the pressure in the vacuum insulation chamber to 5.5-2The temperature of the vacuum heat insulation chamber is increased to 750 ℃ within Pa, 2h, and then heat is preserved for 1 h;
and (3) cooling: and after the heat treatment is finished, cooling the annular cutter to 300 ℃ along with the furnace at a cooling speed of 5.0 ℃/min, and finally discharging from the furnace for air cooling to obtain a finished annular cutter product.
Comparative example two:
a vacuum heat treatment process for a cutter comprises the following steps:
cleaning an annular cutter:
cleaning dirt on the surface of the annular cutter by using a cleaning agent (HQ-156 cleaning agent sold by Haoquan chemical industry Co., Ltd., Dongguan), wherein the annular cutter is forged by W18Cr4V high-speed steel;
feeding an annular cutter into a furnace:
placing an annular cutter on a flat-plate-type material rack, and then pushing the material rack into a vacuum heat insulation chamber;
and (3) heat treatment: adjusting the pressure in the vacuum insulation chamber to 7.5 x 10-2Heating the temperature of the vacuum heat insulation chamber to 810 ℃ within Pa, 2h, and then preserving the heat for 1 h;
and (3) cooling: and after the heat treatment is finished, cooling the annular cutter to 300 ℃ along with the furnace at the cooling speed of 6.5 ℃/min, and finally discharging from the furnace for air cooling to obtain the finished annular cutter.
And (3) performance detection:
hardness tests were performed on the annular cutters prepared in examples two to four and comparative examples one and two, and the surface quality of the annular cutters was observed.
Figure BDA0002466749390000111
According to the detection result, the prepared annular cutter has good surface quality, excellent strength and high performance under the process condition of the invention.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (9)

1. The utility model provides a cutter vacuum heat treatment equipment, includes vacuum furnace body (1), sets up vacuum heat-insulating chamber (11) in vacuum furnace body (1), sets up vacuum heat-insulating door (12) and heating device (13), cooling device (14) and vacuum unit (15) of setting on vacuum furnace body (1) in vacuum furnace body (1) one end, its characterized in that: a sitting bed (2) is arranged in the vacuum furnace body (1), at least two track grooves (3) are arranged on the sitting bed (2), the track groove (3) extends along the length direction of the vacuum furnace body (1), one end of the track groove (3) close to the vacuum heat insulation door (12) penetrates through the sitting bed (2), the material frame (4) is arranged on the sitting bed (2) in a matching way, the lower surface of the material frame (4) is provided with supporting legs (51), the bottom end of the supporting leg (51) is rotatably provided with a traveling wheel (5), the bottom wall of the rail traveling groove (3) is provided with a supporting plate (31) in a sliding way along the vertical direction, the travelling wheels (5) are connected with the upper surface of the supporting plate (31) in a rolling way, the sitting bed (2) is provided with an automatic pressing piece (6) for driving the supporting plate (31) to move downwards, the sitting bed (2) is also provided with an upward lifting reset piece (7) for driving the supporting plate (31) to move upwards; when the supporting plate (31) moves to the top end point, the lower surface of the material frame (4) is far away from the upper surface of the sitting bed (2); when the supporting plate (31) moves to the bottom end point, the lower surface of the material frame (4) is abutted against the lower surface of the sitting bed (2);
the bottom end of the rail moving groove (3) is provided with a lifting groove (32), and the supporting plate (31) is arranged in the lifting groove (32) in a sliding manner along the vertical direction; the automatic downward pressing piece (6) comprises a triggering block (61), a triggering abutting wheel (62), a linkage block (63), a clamping block (64), a clamping base block (65), a clamping head (66) and a positioning spring (67), wherein a triggering sliding groove (611) is formed in one end, far away from the vacuum heat insulation door (12), of the rail moving groove (3) in the horizontal direction, the triggering block (61) is arranged on the groove wall of the triggering sliding groove (611) in a sliding mode along the length direction of the vacuum furnace body (1), the triggering abutting wheel (62) is rotatably arranged at one end, extending into the rail moving groove (3), of the triggering block (61), and the triggering abutting wheel (62) abuts against the end wall of the supporting leg (51); a clamping cavity groove (651) is formed in one end, far away from the triggering support wheel (62), of the triggering sliding groove (611) in an extending mode, a linkage sliding groove (631) communicated with the lifting groove (32) is formed in the bottom wall of the clamping cavity groove (651), the linkage block (63) is fixedly arranged on the end wall of the supporting plate (31) and is arranged in the linkage sliding groove (631) in a sliding mode along the vertical direction, the clamping block (64) is arranged at one end, extending into the clamping cavity groove (651), of the linkage block (63), and a clamping groove (661) is formed in a concave mode at one end, far away from the running rail groove (3), of the clamping block (64); the clamping base block (65) is arranged on the groove wall of the clamping cavity groove (651) in a sliding manner along the length direction of the rail moving groove (3), the upper part of the clamping base block (65) is higher than the clamping block (64), the lower part of the clamping base block (65) is opposite to one end of the clamping block (64) departing from the rail running groove (3), one end of the trigger block (61) extending into the clamping cavity groove (651) is fixedly connected with the top end of the clamping base block (65), the clamping head (66) is arranged on the side wall of the clamping base block (65) opposite to the clamping block (64), one end of the top wall of the clamping groove (661) far away from the rail running groove (3) is a horizontal wall, one side of the top wall of the clamping groove (661) far away from the horizontal wall inclines downwards along one end close to the rail running groove (3), the clamping head (66) is attached to and inserted into the clamping groove (661), and the positioning spring (67) is fixedly arranged between the side wall of one side, away from the clamping head (66), of the clamping base block (65) and the groove wall of the clamping cavity groove (651); when positioning spring (67) is in natural state, dop (66) and draw-in groove (661) joint, trigger and support wheel (62) and stretch into in rail groove (3) the at utmost, fagging (31) are located the top end point.
2. The vacuum heat treatment apparatus for cutting tools according to claim 1, wherein: the upward lifting reset piece (7) comprises a push plate (71), a driving rod (72) and a guide rod (73), the push plate (71) is arranged on the wall of the lifting groove (32) in a sliding mode along the vertical direction and is located below the supporting plate (31), one side, away from the vacuum heat insulation door, of the push plate (71) penetrates through the guide groove (731) along the vertical direction, one side, close to the vacuum heat insulation door (12), of the push plate (71) penetrates through the feeding groove (721) along the vertical direction, the guide rod (73) is fixedly arranged on the bottom wall of the lifting groove (32) and is connected with the guide groove (731) in a sliding mode along the vertical direction, a first abdicating groove (732) connected with the top end of the guide rod (73) in a plugging mode is formed in the lower surface of the supporting plate (31), the driving rod (72) rotates on the bottom wall of the lifting groove (32), and the driving rod (72) is in threaded connection with the feeding groove (721), the lower surface of the supporting plate (31) is provided with a second abdicating groove (722) inserted with the top end of the driving rod (72), and the sitting bed (2) is also provided with a driving device (74) for driving the driving rod (72) to rotate.
3. The vacuum heat treatment apparatus for cutting tools according to claim 1, wherein: the material frame (4) comprises a bottom plate (41) and a plurality of placing plates (42), wherein a plurality of main supporting columns (43) are arranged on the upper surface of the bottom plate (41), auxiliary supporting columns (44) are arranged on the upper surface of the placing plates (42), a placing cavity (45) is formed between the bottom plate (41) and the placing plates (42) and between the adjacent placing plates (42), the main supporting columns (43) and the auxiliary supporting columns (44) are detachably connected with the placing plates (42), and adjusting pieces (46) for adjusting the height of the placing cavity (45) are arranged between the main supporting columns (43) and the auxiliary supporting columns (44) and between the adjacent placing plates (42).
4. A tool vacuum heat treatment apparatus according to claim 3, wherein: the adjusting piece (46) comprises an adjusting supporting groove (461) arranged on the upper surfaces of the main supporting column (43) and the auxiliary supporting column (44), an adjusting supporting block (462) inserted in the adjusting supporting groove (461) and an adjusting supporting rod (463) arranged on the lower surface of the placing plate (42), the adjusting supporting rod (463) is attached and inserted with the adjusting supporting groove (461), and the bottom end of the adjusting supporting rod (463) is abutted to the upper surface of the adjusting supporting block (462).
5. A tool vacuum heat treatment apparatus according to claim 3, wherein: the upper surface of bottom plate (41) and place board (42) is sunken to be provided with and is sat groove (47), it has connect in the groove of sitting (47) and has adjusted frame (471), the periphery wall and the groove of sitting (47) laminating butt of adjusting frame (471), main stay post (43) and vice stay post (44) are pegged graft with the interior casing wall laminating of adjusting frame (471).
6. The vacuum heat treatment apparatus for cutting tools according to claim 2, wherein: landing leg (51) are provided with spacing groove (621) with the relative one end of triggering to wheel (62), spacing (621) groove is followed vertical direction and is extended, trigger to wheel (62) and spacing groove (621) roll connection.
7. The vacuum heat treatment apparatus for cutting tools according to claim 2, wherein: the upper surface of the push plate (71) is provided with a buffering pressure pad (711).
8. The vacuum heat treatment apparatus for cutting tools according to claim 4, wherein: the upper surface of the adjusting support block (462) is convexly provided with a support block (6421), the bottom end of the adjusting support rod (463) is concavely provided with a slot (6422), and the support block (6421) is attached and inserted with the slot (6422).
9. A vacuum heat treatment process for a cutter comprises the following steps:
cleaning the annular cutter (8):
cleaning dirt on the surface of the annular cutter (8);
the method is characterized by further comprising the following steps:
the annular cutter (8) is framed:
according to the specification and the size of the annular cutter (8), the size of a placing cavity (45) of the material frame (4) is adjusted, the straight side wall end of the annular cutter (8) is placed on the flat bearing surfaces of a bottom plate (41) and a placing plate (42) of the material frame (4), and the inner annular wall of the annular cutter (8) is sleeved on the outer side of a main support column (43) or an auxiliary support column (44);
the annular cutter (8) is put into the furnace:
moving the material frame (4) to an inlet of a vacuum furnace body (1), enabling the travelling wheels (5) to be opposite to the upper surfaces of the supporting plates (31), fitting and pushing the material frame (4), enabling the travelling wheels (5) to slide on the supporting plates (31), after the material frame (4) completely moves onto the sitting bed (2), moving the supporting plates (31) downwards, enabling the material frame (4) to be located on the sitting bed (2), closing the vacuum heat insulation door (12), and finishing the furnace feeding of the annular cutter (8);
and (3) heat treatment: adjusting the pressure in the vacuum insulation chamber (11) to 6.9 x 10-2-7.1×10-2The temperature of the vacuum heat insulation chamber (11) is increased to 790-800 ℃ within Pa, 2h, and then the temperature is kept for 1 h;
and (3) cooling: and after the heat treatment is finished, cooling the annular cutter (8) to 250 ℃ along with the furnace at the cooling speed of 5.2-6.3 ℃/min, and finally discharging from the furnace for air cooling to obtain a finished product of the annular cutter (8).
CN202010336372.7A 2020-04-26 2020-04-26 Vacuum heat treatment equipment and process for cutter Active CN111394557B (en)

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