CN115725820A

CN115725820A - Isothermal normalizing processing technology for gear forging

Info

Publication number: CN115725820A
Application number: CN202211444882.1A
Authority: CN
Inventors: 陈泉豪; 陈建青
Original assignee: Jiangxi Jindu Machinery Co ltd
Current assignee: Jiangxi Jindu Machinery Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-03

Abstract

The invention relates to the field of gear forgings, in particular to an isothermal normalizing processing technology of a gear forging, which comprises a base, a charging device and a fixing device, wherein the base consists of a fixed bottom plate and four supporting legs, the charging device is installed at the top of the base, and the fixing device is arranged in the charging device. According to the isothermal normalizing processing technology for the gear forging, provided by the invention, before the gear blank is placed in the furnace body for isothermal normalizing treatment, the distance between the I-shaped plates for placing the gear blank can be adjusted through the arranged fixing device, so that collision is prevented from occurring in the isothermal normalizing treatment process of the gear blank, and the quality of the gear forging is prevented from being influenced; according to the invention, through the arranged moving assembly, the I-shaped plate can drive the plurality of fixed gear blanks to rotate and heat in the process of carrying out isothermal normalizing treatment on the gear blanks, so that the effect that the gear blanks can be heated more uniformly is achieved, and the quality of the gear blanks is further improved.

Description

Isothermal normalizing processing technology for gear forging

Technical Field

The invention relates to the field of gear forgings, in particular to an isothermal normalizing processing technology of a gear forging.

Background

The isothermal normalizing is a heat treatment process which heats common carbon steel to austenitize, the heating temperature and the heat preservation time are the same as those of common normalizing, the heat preserved steel is cooled and isothermally kept, the supercooled austenite is completely transformed in the temperature range, a fine pearlite structure is obtained, and then air cooling is carried out, so that good machining performance and mechanical performance are obtained.

The gear forging has the following problems in the process of isothermal normalizing treatment:

1. when the gear forging is subjected to isothermal normalizing treatment, the conventional method generally places the gear blank into a normalizing furnace directly for isothermal normalizing treatment, and the quality of the gear forging is affected by collision easily in the placing process.

2. In the process of isothermal normalizing treatment of the gear forging, the gear blank is generally fixed, and due to certain error in the temperature in the furnace body, the gear blank is easily heated unevenly, so that the quality of the gear forging is influenced to a certain extent.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides an isothermal normalizing processing technology for a gear forging.

The technical scheme adopted by the invention to solve the technical problem is as follows: the isothermal normalizing processing technology for the gear forging comprises the following steps:

s1, forging and blank making: firstly, the blank for manufacturing the gear is subjected to hot die forging through a hot die forging press, and finally the gear blank is manufactured by adopting an upsetting blank manufacturing method.

S2, gear placement: and (5) placing the gear blanks obtained in the step (S1) on a fixing device in batches.

S3, normalizing treatment: and finally, putting the fixing device for fixing the gear blank in the step S2 into a furnace charging device, and normalizing the gear blank.

The isothermal normalizing processing technology for the gear forging in the steps S1-S3 is adopted to further concretely relate to isothermal normalizing processing equipment for the gear forging in the isothermal normalizing process of the gear forging, and the isothermal normalizing processing equipment for the gear forging comprises a base, a charging device and a fixing device, wherein the base is composed of a fixed bottom plate and four supporting legs, the charging device is installed at the top of the base, and the fixing device is arranged in the charging device.

The charging device include the furnace body, the common fixed mounting in top of four supporting legs has the furnace body, the furnace body is hollow circular barrel structure, the sliding tray that is linked together with furnace body center department is evenly seted up along circumference to the lateral wall of furnace body, the annular slab is installed to central point in the furnace body, the top and the bottom symmetry of furnace body are provided with the drive assembly of symmetry, and the top of furnace body and the position symmetry that furnace body center department was kept away from in the bottom are provided with along the chucking subassembly that furnace body circumference evenly arranged, the bottom of furnace body still is provided with the removal subassembly.

Preferably, the fixing device comprises a v-21274shaped plate, wherein a opening section of the v-21274shaped plate faces back to the center of the furnace body and is fixedly provided with an arc plate with an inner concave surface contacting with an outer ring wall, one end of the arc plate, which is far away from the outer ring wall of the furnace body, is fixedly provided with a handle, the opposite surfaces of two horizontal sections of the v-21274shaped plate are respectively provided with a limit groove, the vertical sections of the v-21274shaped plate are respectively and uniformly provided with a heat dissipation hole which is uniformly distributed, a fixing plate is arranged between the two horizontal sections of the v-21274shaped plate through a rotating rod which is rotatably connected, the bottom of the rotating rod positioned at the lower side is provided with a spline groove, the fixing plate is provided with a rectangular through groove, the rectangular through groove is vertically and slidably connected with a plurality of I-shaped plates, the tops of the two vertical sections of the i-shaped plate are respectively provided with a uniform placement groove, a limiting block is rotatably arranged in the placement groove through a pin shaft, the limiting block is respectively provided with a placement assembly for placing gear blanks, and the two sides of the fixing plate are symmetrically provided with insertion grooves which are communicated from top to bottom and are uniformly arranged, and are used for clamping the inner sliding groove.

Preferably, the middle part of annular slab run through the structural slab along the even horizontal slip of circumference, the equal fixed mounting in one end that the structural slab is located the annular slab outside has the slurcam, is connected through a plurality of reset spring between slurcam and the annular slab, both sides all are the arc structure about the one end that the structural slab is located the annular slab.

Preferably, the chucking subassembly include the chucking board, the chucking board slides and runs through the furnace body, one side tilt up at furnace body center is kept away from to the one end that the chucking board is located the furnace body, the one end lateral wall fixed mounting that the chucking board is located the furnace body outside has the clamp plate, be connected through the shifting spring between clamp plate and the furnace body, the rectangle through-hole has been seted up on the clamp plate, the vertical cross-section of rectangle through-hole is the right trapezoid structure at small-bore end level back to furnace body center, the top of furnace body and the riser that is close to the even setting of center department through circumference of furnace body are provided with the movable block, the one end that the furnace body was kept away from to the riser is through promoting spring sliding connection in the movable block, the one end of movable block and the rectangle through-hole sliding connection who corresponds rather than the position, the other end and the drive assembly of movable block are connected.

Preferably, the driving assembly comprises a circular rod, the other end of the moving block is in contact with the annular surface of the same first round platform block, the first round platform block is sleeved at one end of the circular rod, the other end of the circular rod penetrates through the furnace body in a sliding mode and then is provided with a second round platform block, an L-shaped plate is arranged on the circular rod, the first round platform block on the same circular rod is located between the second round platform block and the circular rod, a fixing block with a bidirectional electric push rod is arranged on the side wall of the furnace body, and two moving ends of the bidirectional electric push rod are fixedly connected with the vertical sections of the corresponding L-shaped plates respectively.

Preferably, the removal subassembly include the telescopic link, the bottom of furnace body along the even sliding through connection in circumference have a telescopic link, the telescopic link is located the one end in the furnace body and pegs graft rather than the spline groove that the position corresponds mutually, fixed mounting has driving motor on the PMKD, driving motor's output shaft and one of them telescopic link fixed connection, rotate between the bottom of surplus telescopic link and the PMKD and be connected, equal fixed mounting has the sprocket on the telescopic link, connect through the chain circle transmission between a plurality of sprockets.

Preferably, place the subassembly including hanging the pole, the stopper on all be fixed with the pole that hangs that is used for placing the gear, hang the pole and keep away from the one end of stopper and seted up the fixed slot, there are two fixed dogs through spring beam fixed mounting in the fixed slot, two back of the body sides that hang the pole constitute the splayed structure that the stopper was kept away from to the small-bore end.

Compared with the prior art, the invention has the following advantages:

1. according to the isothermal normalizing processing technology for the gear forging, provided by the invention, before the gear blank is placed in the furnace body for isothermal normalizing treatment, the distance between the I-shaped plates for placing the gear blank can be adjusted through the arranged fixing device, so that the gear blank is prevented from colliding in the isothermal normalizing treatment process, and the quality of the gear forging is prevented from being influenced.

2. According to the invention, through the arranged moving assembly, the I-shaped plate can drive the plurality of fixed gear blanks to rotate and heat in the process of carrying out isothermal normalizing treatment on the gear blanks, so that the effect that the gear blanks can be heated more uniformly is achieved, and the quality of the gear blanks is further improved.

3. According to the invention, the clamping assembly is arranged, so that the 21274and the shape plate can be limited and fixed, the movement of the 21274and the shape plate in the isothermal normalizing process is prevented, and the isothermal normalizing effect of the gear blank is prevented from being influenced.

4. The gear blank can be limited and fixed through the arrangement of the placing assembly, the gear blank is prevented from falling off in the process of isothermal normalizing treatment of the gear blank, and affected gear blank treatment and damage of the gear blank are avoided.

5. The invention can realize synchronous blanking by simultaneously acting on a plurality of fixing devices through the arranged driving assembly, thereby improving the blanking efficiency of the equipment.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a flow chart of the present invention.

Fig. 2 is a schematic diagram of a first three-dimensional structure of the present invention.

Fig. 3 is a second perspective view of the present invention.

Fig. 4 is a schematic perspective view of the fixing device of the present invention.

Fig. 5 is a main sectional structural view of the present invention.

Fig. 6 is an enlarged view of the invention in the direction of M of fig. 5.

Fig. 7 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 5 in accordance with the present invention.

Fig. 8 is an enlarged view of the invention from the N-direction of fig. 7.

Fig. 9 is a sectional view taken along line B-B of fig. 5 in accordance with the present invention.

Fig. 10 is a schematic view of the connection structure of the fixing device of the present invention.

In the figure: 1. a base; 2. a charging device; 21. a furnace body; 22. an annular plate; 221. a structural panel; 222. a push plate; 223. a return spring; 23. a drive assembly; 231. a circular rod; 232. a first circular truncated cone block; 233. a second round table block; 234. an L-shaped plate; 235. a fixed block; 24. a clamping assembly; 241. a chucking plate; 242. pressing a plate; 243. a movable spring; 244. a vertical plate; 245. a push spring; 246. a moving block; 25. a moving assembly; 251. a telescopic rod; 252. a drive motor; 253. a sprocket; 254. a chain loop; 3. a fixing device; 31. \ 21274; 32. an arc-shaped plate; 33. rotating the rod; 34. a fixing plate; 35. a I-shaped plate; 36. a limiting block; 37. placing the component; 371. a suspension rod; 372. a spring lever; 373. fixing a stop block; 38. a plugboard.

Detailed Description

The present invention is further described in order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand.

The isothermal normalizing processing technology for the gear forging comprises the following steps:

S2, gear placement: and (3) placing the gear blanks obtained in the step (S1) on a fixing device 3 in batches.

S3, normalizing treatment: and finally, the fixing device 3 for fixing the gear blank in the step S2 is placed into the charging device 2, and the gear blank is subjected to normalizing treatment.

Referring to fig. 2, the gear forging isothermal normalizing processing technology of the steps S1-S3 is adopted to further concretely relate to gear forging isothermal normalizing processing equipment in the process of carrying out isothermal normalizing on the gear forging, the gear forging isothermal normalizing processing equipment comprises a base 1, a furnace loading device 2 and a fixing device 3, the base 1 is composed of a fixing bottom plate and four supporting legs, the furnace loading device 2 is installed at the top of the base 1, and the fixing device 3 is arranged in the furnace loading device 2.

Referring to fig. 2, fig. 3 and fig. 5, the charging device 2 include the furnace body 21, the annular plate 22, drive assembly 23, chucking subassembly 24 and removal subassembly 25, the common fixed mounting in top of four supporting legs has the furnace body 21, the furnace body 21 is hollow circular barrel structure, the lateral wall of furnace body 21 evenly offers the sliding tray that is linked together with furnace body 21 center department along circumference, the annular plate 22 is installed to central point in the furnace body 21, the top and the bottom symmetry of furnace body 21 are provided with drive assembly 23, and the top of furnace body 21 and the position symmetry that the furnace body 21 center department was kept away from in bottom are provided with chucking subassembly 24 along furnace body 21 circumference evenly arranged, the bottom of furnace body 21 still is provided with removal subassembly 25.

In an original state, firstly, gear blanks needing isothermal normalizing are placed on the fixing device 3 for limiting, after the limiting is completed, the fixing device 3 and the gear blanks are integrally placed in the furnace body 21 for clamping, the gear blanks can be subjected to isothermal normalizing, the rotating rod 33 can drive the fixing plate 34 to rotate through the arranged moving assembly 25, the fixing plate 34 drives the gear blanks which are fixedly limited on the I-shaped plate 35 to rotate, the gear blanks can be heated more uniformly in the isothermal normalizing process, the quality of the gear blanks is improved, after the isothermal normalizing process of the gear blanks is completed, the multiple v-2127431-shaped plates can be simultaneously blanked through the arranged driving assembly 23, and the blanking efficiency of equipment can be improved.

Referring to fig. 3, 4, 5 and 10, the fixing device 3 comprises a v-shaped plate 31, an arc plate 32, a rotating rod 33, a fixing plate 34, an i-shaped plate 35, a limiting block 36, a placing component 37 and a plug board 38, wherein the v-shaped plate 31 and the v-shaped plate 21274are arranged in a sliding groove arranged along the circumferential direction of the furnace body 21 in a sliding way, the opening section of the v-shaped plate 31 faces back to the center of the furnace body 21 and is fixedly provided with the arc plate 32 with an inner concave surface contacting with the outer annular wall of the furnace body 21, one end of the arc plate 32 far away from the outer annular wall of the furnace body 21 is fixedly provided with a handle, the v-shaped plate 21274, the opposite surfaces of two horizontal sections of the v-shaped plate 31 are provided with limiting grooves, the v-shaped plate 21274, and the vertical sections of the v-shaped plate 31 are uniformly provided with radiating holes which are uniformly distributed, 21274, install fixed plate 34 jointly through rotating the rotary rod 33 of connecting between two horizontal segments of shape board 31, the spline groove has been seted up to the bottom that is located the rotary rod 33 of downside, rectangular through groove has been seted up on fixed plate 34, the vertical sliding connection has a plurality of worker shape boards 35 that are the I-shaped in the rectangular through groove, the standing groove has evenly been seted up at two vertical segment tops of worker shape board 35, it is provided with stopper 36 to rotate through the round pin axle in the standing groove, all be provided with the subassembly 37 of placing that is used for placing gear blank on the stopper 36, the inserting groove that is linked together with the rectangular through groove of evenly arranging from top to bottom is seted up to the bilateral symmetry of fixed plate 34, sliding joint has the plugboard 38 that is used for supporting worker shape board 35 in the inserting groove that corresponds with worker shape board 35 position.

Firstly, hot die forging is carried out on a blank for manufacturing a gear through a hot die forging press, then the gear blank is manufactured by adopting an upsetting blank manufacturing method, then the distance between an I-shaped plate 35 and the I-shaped plate 35 on a fixing plate 34 is adjusted, the gear blank is prevented from colliding in the isothermal normalizing process due to too short distance, so that the forging quality of the gear blank is influenced, after the distance between the I-shaped plate 35 and the I-shaped plate 35 is adjusted, the arranged plug-in plate 38 is plugged into the plug-in groove in the side wall of the fixing plate 34, so that the I-shaped plate 35 is supported, after the distance is adjusted, the obtained gear blank is placed on a corresponding placing assembly 37, the gear blank is limited and fixed through the placing assembly 37, and the phenomenon that the gear blank falls in the isothermal normalizing process is prevented, so that a certain influence is caused on the gear blank.

Referring to fig. 7 and 8, the placing assembly 37 includes a hanging rod 371, a spring rod 372 and a fixed stop 373, the limiting block 36 is fixed with the hanging rod 371 for placing the gear, a fixing groove is formed in one end, away from the limiting block 36, of the hanging rod 371, two fixed stops 373 are fixedly mounted in the fixing groove through the spring rod 372, and the two opposite sides of the hanging rod 371 form a splayed structure with a small-diameter end away from the limiting block 36.

When the gear blank contacts the fixed stopper 373, the gear blank pushes the fixed stopper 373 to move towards the inside of the fixed groove and synchronously pushes the spring rod 372, after the gear blank contacts one end of the limiting block 36, the gear blank crosses the fixed stopper 373, at the moment, the fixed stopper 373 returns to the original position and clings to the surface of the gear blank to limit and fix the gear blank, so that the gear blank is convenient to rapidly load and unload, the arranged limiting block 36 can rotate in the placing groove, in order to avoid collision between the gear blanks, the hanging rod which is not needed to be used can be moved into the placing groove by upwards rotating the limiting block 36, after the gear blank is limited and fixed, the V-shaped plate 31 is inserted into the sliding groove on the furnace body 21, so that the isothermal normalizing plate 31 on the fixed plate 7434 is driven to enter the inner ring-shaped furnace body 7421221 and the isothermal normalizing plate is prevented from entering the furnace body 7421221, and the isothermal normalizing plate 31 is prevented from entering the furnace body 7421221.

Referring to fig. 5 and 6, the clamping assembly 24 includes a clamping plate 241, a pressing plate 242, a moving spring 243, a vertical plate 244, a pushing spring 245 and a moving block 246, the clamping plate 241 slidably penetrates through the furnace body 21, one side of one end of the clamping plate 241, which is located in the furnace body 21 and far away from the center of the furnace body 21, is inclined upward, the side wall of one end of the clamping plate 241, which is located outside the furnace body 21, is fixedly provided with the pressing plate 242, the pressing plate 242 is connected with the furnace body 21 through the moving spring 243, the pressing plate 242 is provided with a rectangular through hole, the vertical section of the rectangular through hole is a right-angled trapezoid structure with a small caliber end horizontally back to the center of the furnace body 21, the vertical plate 244, which is evenly arranged at the top of the furnace body 21 and close to the center of the furnace body 21, the end of the vertical plate 244, which is far away from the furnace body 21, is slidably connected in the moving block 246 through the pushing spring 245, one end of the moving block 246 is slidably connected with the rectangular through hole corresponding to the position thereof, and the other end of the moving block 246 is connected with the driving assembly 23;

in an original state, the clamping plate 241 is positioned in the furnace body 21 under the action of the moving spring 243 by the pressure plate 242, in the process of inserting the v-shaped plate 31, the v-shaped plate 31 contacts the inclined surface of the clamping plate 241 firstly, so that the clamping plate 241 is pushed to move upwards to facilitate the entry of the v-shaped plate 31, when the limiting groove is opposite to the clamping plate 241, the end part of the inclined surface of the clamping plate 241 is clamped into the v-shaped plate 21274under the counter force of the moving spring 243, and the v-shaped plate 31 is limited and fixed, so that the v-shaped plate 31 is prevented from moving in the isothermal normalizing process.

Referring to fig. 5 and 9, the moving assembly 25 includes a telescopic rod 251, a driving motor 252, a chain wheel 253 and a chain ring 254, the bottom of the furnace body 21 is uniformly connected with the telescopic rod 251 in a sliding and penetrating manner along the circumferential direction, one end of the telescopic rod 251 located in the furnace body 21 is inserted into a spline groove corresponding to the position of the telescopic rod 251, the fixed base plate is fixedly provided with the driving motor 252, an output shaft of the driving motor 252 is fixedly connected with one of the telescopic rods 251, the bottoms of the remaining telescopic rods 251 are rotatably connected with the fixed base plate, the telescopic rods 251 are fixedly provided with the chain wheel 253, and the chain wheels 253 are in transmission connection through the chain ring 254.

After the v 2127431 plates are all inserted into the furnace body 21, the telescopic rods 251 are manually moved to enable the telescopic rods 251 to be inserted into spline grooves formed in the rotary rods 33 located on the lower side, the driving motors 252 are started at the moment, the driving motors 252 drive one of the telescopic rods 251 to rotate, the plurality of chain wheels 253 drive the telescopic rods 251 to rotate under the action of the chain rings 254, the fixed plates 34 are driven by the telescopic rods 251 to rotate, and then gear blanks fixed in a limiting mode are driven to rotate, so that the gear blanks can be heated more uniformly in the isothermal normalizing process, and the quality of the gear blanks is improved.

Referring to fig. 3 and 5, the driving assembly 23 includes a circular rod 231, a first circular truncated cone block 232, a second circular truncated cone block 233, an L-shaped plate 234 and a fixed block 235, the other end of the moving block 246 contacts with the annular surface of the same first circular truncated cone block 232, the first circular truncated cone block 232 is sleeved at one end of the circular rod 231, the other end of the circular rod 231 slidably penetrates through the furnace body 21 and then is provided with the second circular truncated cone block 233, the circular rod 231 is provided with the L-shaped plate 234, the first circular truncated cone block 232 on the same circular rod 231 is located between the second circular truncated cone block 233 and the circular rod 231, the side wall of the furnace body 21 is provided with the fixed block 235 with a bidirectional electric push rod, and two moving ends of the bidirectional electric push rod are respectively and fixedly connected with the vertical sections of the respective corresponding L-shaped plates 234;

referring to fig. 5 and 7, the middle portion of the annular plate 22 uniformly and horizontally slides along the circumferential direction to penetrate through the structural plate 221, the pushing plate 222 is fixedly mounted at one end of the structural plate 221 located at the outer side of the annular plate 22, the pushing plate 222 is connected with the annular plate 22 through a plurality of return springs 223, and the upper side and the lower side of one end of the structural plate 221 located in the annular plate 22 are both arc-shaped.

After isothermal normalizing the gear blank, separating the telescopic rod 251 from the spline groove manually, then starting a bidirectional electric push rod, enabling the L-shaped plate 234 to drive the upper and lower circular rods 231 to move relatively, enabling the first circular truncated cone block 232 on the circular rod 231 to contact the moving block 246 firstly, and in the process of downward movement of the first circular truncated cone block 232, pushing the moving block 246 to move horizontally along the rectangular through hole, and under the matching of inclined surfaces of the moving block 246 and the rectangular through hole, driving the moving block 242 to move in a direction away from the 21274plate 31 by the clamping plate 241, so that the clamping plate 241 is separated from the limiting groove on the 21274plate 31 firstly, and at the moment, the circular rod 231 continuously moves downwards, so that the circular rod 231 drives the second circular truncated cone block 233 to press the structural plate 221, and the structural plate 221 drives the pushing plate 222 to synchronously move horizontally to push the 21274plate 31 outwards to the furnace body 21, thereby realizing synchronous blanking of all the 21274plates 31, and further improving the blanking efficiency of the device.

The concrete during operation:

firstly, in an original state, a blank for manufacturing the gear is subjected to hot die forging through a hot die forging press, and finally the gear blank is manufactured by adopting an upsetting blank manufacturing method.

And a second step, adjusting the distance between the i-shaped plate 35 and the i-shaped plate 35 on the fixing plate 34, after adjusting the distance between the i-shaped plate 35 and the i-shaped plate 35, at this time, inserting the arranged inserting plate 38 into the inserting groove on the side wall of the fixing plate 34, so as to take a bearing effect on the i-shaped plate 35, after adjusting the distance, at this time, placing the gear blank needing isothermal normalizing on the suspension rod 371, when the gear blank contacts the fixed stopper 373, the gear blank pushes the fixed stopper 373 to move towards the inside of the fixing groove, and synchronously pushes the spring rod 372, when the gear blank is pushed to contact with one end of the limiting block 36, the gear blank crosses the fixed stopper 373, at this time, under the action of the spring rod 372, the fixed stopper 373 returns to the original position and is tightly attached to the surface of the gear blank to limit and fix the gear blank, thereby facilitating the rapid gear feeding and discharging.

Thirdly, inserting the 21274plate 31 into the furnace body 21, forming a 21274, enabling the I-shaped plate 35 on the fixing plate 34 to drive a gear blank with limited fixing to enter the furnace body 21, when the inner concave surface of the arc-shaped plate 32 abuts against the outer annular wall of the furnace body 21, forming 21274, enabling the horizontal section of the I-shaped plate 31 to firstly contact the inclined surface of the clamping plate 241, so as to push the clamping plate 241 to move upwards, thereby facilitating the entry of the 21274plate 31, when the limiting groove is opposite to the clamping plate 241, under the counter-acting force of the movable spring 243, clamping the end part where the inclined surface of the clamping plate 241 is located into the 21274, further limiting the 21274, limiting and fixing the I-shaped plate 31, so as to prevent the 2127431 from moving in the isothermal normalizing process, after the I-shaped plate 31 is completely inserted into the furnace body 21, manually moving the telescopic rod 251, so that the telescopic rod 251 is inserted into the limiting groove formed on the lower side 33 of the lower side of the furnace body, and then starting the driving motor 252 to drive one of the telescopic rod 254 to drive the spline chain wheel 254 to rotate so as to perform uniform rotation of the telescopic rod 251, thereby enabling the telescopic rod to perform the spline gear blank to perform the rotation of the spline chain wheel 251, and further performing the isothermal normalizing process, so as to perform the rotation of the telescopic rod 251, thereby enabling the telescopic rod to perform the spline chain wheel 251 to perform the rotation of the chain wheel 251.

Fourthly, after the gear blank is subjected to isothermal normalizing treatment, the expansion link 251 is separated from the spline groove manually, then the bidirectional electric push rod is started, the L-shaped plate 234 drives the upper and lower circular rods 231 to move relatively, so that the first circular truncated cone block 232 on the circular rod 231 is firstly contacted with the moving block 246, the moving block 246 is pushed to move horizontally along the rectangular through hole in the downward movement process of the first circular truncated cone block 232, the clamping plate 241 drives the moving block 242 to move in the direction away from the 21274-shaped plate 31 under the matching of the inclined surfaces of the moving block 246 and the rectangular through hole, so that the clamping plate 241 is firstly separated from the limiting groove on the 21274-shaped plate 31, at the moment, the circular rods 231 continuously move downwards, so that the circular rod 231 drives the second circular truncated cone block 233 to press the structural plate 221, and the structural plate 221 drives the pushing plate 222 to synchronously move horizontally to push the prob 21274-shaped plate 31 outwards towards the furnace body 21, so that the synchronous blanking of the prob 21274-shaped plates 31 is realized, and the blanking efficiency of the device is improved.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The isothermal normalizing processing technology for the gear forging is characterized by comprising the following steps of: the isothermal normalizing processing of the gear forging specifically comprises the following steps:

s1, forging and blank making: firstly, hot die forging is carried out on a blank for manufacturing the gear through a hot die forging press, and finally the gear blank is manufactured by adopting an upsetting blank manufacturing method;

s2, gear placement: placing the gear blanks obtained in the step S1 on a fixing device (3) in batches;

s3, normalizing treatment: finally, the fixing device (3) for fixing the gear blank in the step S2 is placed into the charging device (2), and the gear blank is subjected to normalizing treatment;

the isothermal normalizing processing technology of the gear forging in the steps S1-S3 is adopted, and in the isothermal normalizing process of the gear forging, the isothermal normalizing processing equipment of the gear forging is further specifically related, and comprises a base (1), wherein the base (1) consists of a fixed bottom plate and four supporting legs, a furnace charging device (2) is installed at the top of the base (1), and a fixing device (3) is arranged in the furnace charging device (2);

the charging device (2) include furnace body (21), the common fixed mounting in top of four supporting legs has furnace body (21), furnace body (21) are hollow circular barrel structure, the lateral wall of furnace body (21) evenly sets up the sliding tray that is linked together with furnace body (21) center department along circumference, central point puts and installs annular slab (22) in furnace body (21), the top and the bottom symmetry of furnace body (21) are provided with drive assembly (23) of symmetry, and the position symmetry that furnace body (21) center department was kept away from to the top and the bottom of furnace body (21) is provided with chucking subassembly (24) of evenly arranging along furnace body (21) circumference, the bottom of furnace body (21) still is provided with removal subassembly (25).

2. The isothermal normalizing processing technology of the gear forging according to claim 1, characterized in that: the fixing device (3) comprises a v-21274shaped plate (31), wherein the v-21274shaped plate (31) is arranged in a sliding groove which is formed in the furnace body (21) along the circumferential direction in a sliding mode, the v-21274is formed in a manner that an opening section of the v-shaped plate (31) faces back to the center of the furnace body (21) and is fixedly provided with an arc plate (32) of which the inner concave surface is in contact with the inner concave surface and the outer ring wall, a handle is fixedly arranged at one end, far away from the outer ring wall of the furnace body (21), of the arc plate (32), the v-74is formed in the opposite surfaces of two horizontal sections of the v-shaped plate (31), a limiting groove is formed in each horizontal section, a rectangular through groove is formed in the fixing plate (34), a plurality of I-shaped plates (35) which are in an I shape are vertically and slidably connected between the two horizontal sections of the v-shaped plate (31) through a rotating rod (33) which is rotatably connected, spline grooves are formed in the bottom of the rotating rod (33) which is positioned at the lower side, rectangular through grooves are formed in the fixing plate (34), rectangular through which rectangular through vertically sliding connection, rectangular through which rectangular through grooves (36) are uniformly arranged, and through pin shaft assemblies (36) which are symmetrically arranged on two sides are arranged, and are used for placing blocks (36) are symmetrically arranged on two sides, the inserting plate (38) used for supporting the H-shaped plate (35) is clamped in the inserting groove corresponding to the position of the H-shaped plate (35).

3. The isothermal normalizing processing technology of the gear forging according to claim 1, characterized in that: the middle part of annular plate (22) along the even horizontal slip of circumference run through structural slab (221), the equal fixed mounting in one end that structural slab (221) is located annular plate (22) outside has slurcam (222), is connected through a plurality of reset spring (223) between slurcam (222) and annular plate (22), both sides all are the arc structure about structural slab (221) is located the one end in annular plate (22).

4. The isothermal normalizing process for the gear forging according to claim 1, wherein the isothermal normalizing process comprises the following steps: the clamping assembly (24) comprises a clamping plate (241), the clamping plate (241) penetrates through the furnace body (21) in a sliding mode, one end, located in the furnace body (21), of the clamping plate (241) is upwards inclined away from one side of the center of the furnace body (21), one end, located outside the furnace body (21), of the clamping plate (241) is fixedly provided with a pressing plate (242), the pressing plate (242) is connected with the furnace body (21) through a moving spring (243), a rectangular through hole is formed in the pressing plate (242), the vertical section of the rectangular through hole is of a right-angle trapezoidal structure with a small caliber end horizontally opposite to the center of the furnace body (21), a moving block (246) is arranged at the top of the furnace body (21) and close to the center of the furnace body (21) and is provided with a vertical plate (244) which is uniformly arranged in the circumferential direction, one end, located away from the furnace body (21), of the vertical plate (244) is connected in the moving block (246) in a sliding mode through a pushing spring (245), one end of the moving block (246) is connected with the rectangular through hole corresponding to the moving block (246) in position in a sliding mode, and the other end of the moving block (246) is connected with the driving assembly (23).

5. The isothermal normalizing processing technology of the gear forging according to claim 4, characterized in that: the driving assembly (23) comprises a circular rod (231), the other end of the moving block (246) is in contact with the annular surface of the same first round block (232), the first round block (232) is sleeved at one end of the circular rod (231), the other end of the circular rod (231) penetrates through the furnace body (21) in a sliding mode and is provided with a second round block (233), an L-shaped plate (234) is installed on the circular rod (231), the first round block (232) on the same circular rod (231) is located between the second round block (233) and the circular rod (231), a fixing block (235) with a fixed bidirectional electric push rod is installed on the side wall of the furnace body (21), and two moving ends of the bidirectional electric push rod are fixedly connected with the vertical sections of the L-shaped plates (234) corresponding to the two moving ends respectively.

6. The isothermal normalizing process for the gear forging according to claim 2, wherein the isothermal normalizing process comprises the following steps: the moving assembly (25) comprises a telescopic rod (251), the bottom of the furnace body (21) is connected with the telescopic rod (251) in a penetrating mode along the circumferential direction, one end of the telescopic rod (251) located in the furnace body (21) is connected with a spline groove corresponding to the telescopic rod in position in a inserting mode, a driving motor (252) is fixedly installed on the fixed base plate, an output shaft of the driving motor (252) is fixedly connected with one of the telescopic rods (251), the bottoms of the rest telescopic rods (251) are connected with the fixed base plate in a rotating mode, chain wheels (253) are fixedly installed on the telescopic rod (251), and the plurality of chain wheels (253) are connected through chain rings (254) in a transmission mode.

7. The isothermal normalizing processing technology of the gear forging according to claim 2, characterized in that: place subassembly (37) including hanging pole (371), stopper (36) on all be fixed with the pole (371) that hangs that is used for placing the gear, hang pole (371) and keep away from the one end of stopper (36) and seted up the fixed slot, have two fixed dog (373) through spring lever (372) fixed mounting in the fixed slot, two back of the body sides that hang pole (371) constitute the splayed structure that stopper (36) were kept away from to the small-bore end.