CN115725820A - Isothermal normalizing processing technology for gear forging - Google Patents

Abstract

The invention relates to the field of gear forgings, in particular to an isothermal normalizing process for gear forgings, including a base, a furnace loading device and a fixing device, the base is composed of a fixed bottom plate and four supporting legs, and a furnace loading device is installed on the top of the base , A fixing device is arranged in the furnace charging device. According to the isothermal normalizing process of gear forgings provided by the present invention, before the gear blank is placed in the furnace body for isothermal normalizing treatment, the distance between the I-shaped plates on which the gear blank is placed can be adjusted through the fixed device, so as to prevent Collisions occur during the isothermal normalizing treatment of the gear blanks to avoid affecting the quality of the gear forgings; the invention uses the set moving assembly to drive a plurality of I-shaped plates to fix the gear blanks during the isothermal normalizing treatment of the gear blanks. The gear blank is rotated and heated, so as to achieve the effect that the gear blank can be heated more uniformly, thereby improving the quality of the gear blank.

Description

A kind of isothermal normalizing processing technology of gear forging

technical field

The invention relates to the field of gear forgings, in particular to an isothermal normalizing process for gear forgings.

Background technique

Isothermal normalizing is to heat ordinary carbon steel to austenitization. The heating temperature and holding time are the same as ordinary normalizing. The steel after heat preservation is cooled and isothermally maintained to complete the transformation of supercooled austenite within this temperature range. , to obtain finer pearlite structure, and then air-cooled to obtain better processability and mechanical properties of the heat treatment process, the adoption of isothermal normalizing process, to achieve effective control of the quality of transmission gears, shaft parts and other parts, Machinability and heat treatment deformation stability are thereby improved.

The following problems exist in the process of isothermal normalizing for gear forgings:

1. When gear forgings are subjected to isothermal normalizing treatment, the traditional method is to directly place the gear blanks in the normalizing furnace for isothermal normalizing treatment. During the placement process, collisions are likely to occur and affect the quality of gear forgings.

2. During the isothermal normalizing process of gear forgings, the gear blanks are generally fixed. Due to certain errors in the temperature in the furnace body, it is easy to cause uneven heating of the gear blanks, which in turn affects the quality of the gear forgings. be affected to a certain extent.

Contents of the invention

In order to make up for the deficiencies of the prior art, the invention provides an isothermal normalizing process for gear forgings.

The technical problem to be solved by the present invention is achieved by adopting the following technical solutions: an isothermal normalizing process for gear forgings. The isothermal normalizing process for gear forgings specifically includes the following steps:

S1. Forging blank: firstly, the blank for making the gear is subjected to hot die forging through a hot forging press, and finally the gear blank is manufactured by upsetting the billet.

S2. Gear placement: place the gear blanks obtained in step S1 on the fixing device in batches.

S3. Normalizing treatment: Finally, put the fixing device for fixing the gear blank in step S2 into the furnace charging device, and perform normalizing treatment on the gear blank.

The isothermal normalizing processing technology for gear forgings using the above steps S1-S3 also specifically involves an isothermal normalizing processing equipment for gear forgings in the process of carrying out isothermal normalizing for gear forgings, including a base, a furnace loading device and a fixing device. The base described above is composed of a fixed bottom plate and four supporting legs, a furnace loading device is installed on the top of the base, and a fixing device is arranged in the furnace loading device.

The furnace loading device includes a furnace body, the top of the four supporting legs is jointly fixed with the furnace body, the furnace body is a hollow circular barrel structure, and the side wall of the furnace body is evenly opened along the circumference to communicate with the center of the furnace body. The sliding groove, the center position of the furnace body is equipped with an annular plate, the top and bottom of the furnace body are symmetrically provided with symmetrical drive components, and the top and bottom of the furnace body are symmetrically provided with a uniform drive assembly along the circumference of the furnace body The clamping components are arranged, and the bottom of the furnace body is also provided with a moving component.

Preferably, the fixing device includes a U-shaped plate, and a U-shaped plate is slidably arranged in a sliding groove opened along the circumference of the furnace body, and the opening section of the U-shaped plate faces away from the center of the furnace body and is fixedly installed with The inner concave surface and the arc-shaped plate in contact with the inner concave surface and the outer ring wall. The end of the arc-shaped plate away from the outer ring wall of the furnace is fixedly equipped with a handle. The vertical section of the plate is evenly provided with evenly distributed heat dissipation holes, and the rotating rod connected by rotation between the two horizontal sections of the 匚-shaped plate is jointly installed with a fixed plate. There is a rectangular slot on the board, and a plurality of I-shaped plates are vertically slid and connected in the rectangular slot. The tops of the two vertical sections of the I-shaped plates are evenly provided with placement slots, and the placement slots are rotated by pin shafts. The limit block is set, and the limit block is equipped with a placement assembly for placing the gear blank. The two sides of the fixed plate are symmetrically provided with insertion slots that are evenly arranged from top to bottom and communicate with the rectangular through slot. A plug-in board for supporting the I-shaped board is slidingly clamped in the plug-in slot corresponding to the position of the board.

Preferably, the middle part of the annular plate slides evenly and horizontally through the structural plate along the circumferential direction, and one end of the structural plate located outside the annular plate is fixedly equipped with a push plate, and the push plate and the annular plate are connected by a plurality of return springs, The upper and lower sides of one end of the structural plate located in the annular plate are arc-shaped structures.

Preferably, the clamping assembly includes a clamping plate, the clamping plate slides through the furnace body, one end of the clamping plate located in the furnace body is inclined upwards away from the center of the furnace body, and the clamping plate is located on the side wall of one end of the furnace body A pressure plate is fixedly installed, and the pressure plate and the furnace body are connected by moving springs. A rectangular through hole is opened on the pressure plate. The vertical section of the rectangular through hole is a right-angled trapezoidal structure with the small-diameter end facing away from the center of the furnace body horizontally. At the top and near the center of the furnace body, a moving block is provided through a vertical plate evenly arranged in the circumferential direction. The end of the vertical plate away from the furnace body is slidably connected in the moving block by pushing a spring. The holes are slidingly connected, and the other end of the moving block is connected with the drive assembly.

Preferably, the drive assembly includes a circular rod, the other end of the moving block is in contact with the annular surface of the same No. 1 round table block, the No. 1 round table block is sleeved on one end of the round rod, and the other end of the round rod After one end slides through the furnace body, the No. 2 round table block is installed, and the L-shaped plate is installed on the round rod. The No. 1 round table block on the same round rod is located between the No. 2 round table block and the round rod. The side of the furnace body A fixed block with a two-way electric push rod is installed on the wall, and the two moving ends of the two-way electric push rod are respectively fixedly connected with the vertical sections of the corresponding L-shaped plates.

Preferably, the moving assembly includes a telescopic rod, and the bottom of the furnace body is evenly slid along the circumferential direction and is connected with a telescopic rod. A drive motor is fixedly installed on the bottom plate, the output shaft of the drive motor is fixedly connected to one of the telescopic rods, the bottom of the remaining telescopic rods is connected to the fixed bottom plate in rotation, and sprockets are fixedly installed on the telescopic rods. Linked by a chain drive.

Preferably, the placement assembly includes a suspension rod, and a suspension rod for placing gears is fixed on each of the limit blocks, and a fixing groove is opened on the end of the suspension rod away from the limit block, and the fixing groove is fixed and installed by a spring rod There are two fixed stops, and the opposite sides of the two suspension rods form a figure-eight structure in which the small-caliber end is away from the limit block.

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

1. In the isothermal normalizing process for gear forgings provided by the present invention, before the gear blank is placed in the furnace body for isothermal normalizing treatment, the distance between the I-shaped plates on which the gear blank is placed can be adjusted through a fixed device. Thereby preventing the gear blank from colliding during the isothermal normalizing process and avoiding affecting the quality of the gear forging.

2. In the process of the isothermal normalizing treatment of the gear blanks, the present invention can make the I-shaped plate drive a plurality of fixed gear blanks to rotate and heat, so as to achieve the effect that the gear blanks can be heated more uniformly , and then improve the quality of gear blanks.

3. The clamping assembly provided in the present invention can limit and fix the U-shaped plate, prevent the U-shaped plate from moving during the isothermal normalizing treatment, and avoid affecting the isothermal normalizing treatment effect of the gear blank.

4. The present invention can limit and fix the gear blank through the provided placement component, prevent the falling situation during the isothermal normalizing process of the gear blank, avoid affecting the processing of the gear blank and avoid damage to the gear blank.

5. In the present invention, the driving assembly provided can act on multiple fixing devices at the same time to realize synchronous unloading, thereby improving the unloading efficiency of the equipment.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

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

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

Fig. 3 is a schematic diagram of a second three-dimensional structure of the present invention.

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

Fig. 5 is a schematic diagram of the main sectional structure of the present invention.

Fig. 6 is a partial enlarged view along the M direction of Fig. 5 of the present invention.

Fig. 7 is an A-A sectional view of Fig. 5 of the present invention.

Fig. 8 is a partial enlarged view in N direction of Fig. 7 of the present invention.

Fig. 9 is a sectional view along B-B direction of Fig. 5 of the present invention.

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

In the figure: 1, base; 2, furnace loading device; 21, furnace body; 22, annular plate; 221, structural plate; 222, push plate; 223, return spring; 23, drive assembly; 231, circular rod; , No. 1 round table block; 233, No. 2 round table block; 234, L-shaped plate; 235, fixed block; 24, clamping assembly; 241, clamping plate; 242, pressing plate; 243, moving spring; 245, push spring; 246, moving block; 25, moving assembly; 251, telescoping rod; 252, driving motor; 253, sprocket wheel; 254, chain ring; 3, fixing device; Plate; 33, rotating rod; 34, fixed plate; 35, I-shaped plate; 36, limit block; 37, place assembly; 371, suspension rod; 372, spring rod; 373, fixed block; 38, plug-in plate .

Detailed ways

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further elaborated.

An isothermal normalizing process for gear forgings. The isothermal normalizing process for gear forgings specifically includes the following steps:

S1. Forging blank: firstly, the blank for making the gear is subjected to hot die forging through a hot forging press, and finally the gear blank is manufactured by upsetting the billet.

S2. Gear placement: place the gear blanks obtained in step S1 on the fixing device 3 in batches.

S3. Normalizing treatment: Finally, put the fixing device 3 for fixing the gear blank in step S2 into the furnace charging device 2, and perform normalizing treatment on the gear blank.

Referring to Fig. 2, the isothermal normalizing process of gear forgings using the above steps S1-S3 also specifically involves an isothermal normalizing processing equipment for gear forgings, including a base 1 and a furnace loading device. 2 and a fixing device 3, the base 1 is composed of a fixed bottom plate and four supporting legs, a furnace loading device 2 is installed on the top of the base 1, and a fixing device 3 is arranged in the furnace charging device 2.

Referring to Fig. 2, Fig. 3 and Fig. 5, the furnace charging device 2 includes a furnace body 21, an annular plate 22, a driving assembly 23, a clamping assembly 24 and a moving assembly 25, and the tops of the four supporting legs are fixedly installed with a furnace body 21, the furnace body 21 is a hollow circular barrel structure, the side wall of the furnace body 21 is evenly provided with a sliding groove connected with the center of the furnace body 21 along the circumference, and an annular plate 22 is installed at the center of the furnace body 21, and the furnace body 21 The top and bottom of the body 21 are symmetrically provided with a drive assembly 23, and the top and bottom of the furnace body 21 are symmetrically arranged at a position away from the center of the furnace body 21. The clamping assembly 24 is evenly arranged along the circumference of the furnace body 21, and the furnace body 21 The bottom of the bottom is also provided with a moving assembly 25.

In the original state, the gear blank that needs to be subjected to isothermal normalizing treatment is first placed on the fixing device 3 to limit the position. After the limit is completed, the fixing device 3 and the gear blank are placed in the furnace body 21 for clamping. The isothermal normalizing treatment can be carried out to the gear blank, and the moving assembly 25 provided can make the rotating rod 33 drive the fixed plate 34 to rotate, so that the fixed plate 34 drives the gear blank fixed at the upper limit of the I-shaped plate 35 to rotate, so that in the isothermal normalization During the annealing process, the gear blanks can be heated more evenly, thereby improving the quality of the gear blanks. After the gear blanks are subjected to isothermal normalizing treatment, the drive assembly 23 can be used to simultaneously unload multiple U-shaped plates 31, which can improve the quality of the equipment. cutting efficiency.

Referring to Fig. 3, Fig. 4 Fig. 5 and Fig. 10, the described fixing device 3 includes a U-shaped plate 31, an arc-shaped plate 32, a rotating rod 33, a fixed plate 34, an I-shaped plate 35, a limiting block 36, and a placement assembly 37 and the plug plate 38, the furnace body 21 is provided with a U-shaped plate 31 slidingly in the sliding groove provided along the circumferential direction, and the opening section of the U-shaped plate 31 faces away from the center of the furnace body 21 and is fixedly installed with an inner concave surface and The arc-shaped plate 32 that is in contact with the outer ring wall of the furnace body 21, a handle is fixedly installed on the end of the arc-shaped plate 32 away from the outer ring wall of the furnace body 21, and the opposite sides of the two horizontal sections of the 匚-shaped plate 31 are provided with limiting grooves. The vertical section of the shaped plate 31 is evenly provided with evenly distributed heat dissipation holes, and the rotating rod 33 connected by rotation is jointly installed with a fixed plate 34 between the two horizontal sections of the shaped plate 31, and the bottom of the rotating rod 33 located at the lower side A spline groove is provided, and a rectangular through slot is provided on the fixed plate 34. A plurality of I-shaped I-shaped plates 35 are vertically slidably connected in the rectangular through slot, and the tops of the two vertical sections of the I-shaped plates 35 are uniformly provided with slot, and the positioning block 36 is set in the slot through the rotation of the pin shaft, and the positioning block 36 is provided with a placement assembly 37 for placing the gear blank, and the two sides of the fixed plate 34 are symmetrically arranged from top to bottom. The insertion slots connected with the rectangular through slots, and the insertion slots corresponding to the position of the I-shaped plate 35 are slidably engaged with the insertion plate 38 for supporting the I-shaped plate 35 .

First, the blank for making the gear is hot forged by a hot forging press, and then the gear blank is manufactured by upsetting the embryo, and then the distance between the I-shaped plate 35 on the fixed plate 34 and the I-shaped plate 35 is adjusted. To prevent the gear blank from colliding during the isothermal normalizing process due to too close a distance, thereby affecting the forging quality of the gear blank, after adjusting the distance between the I-shaped plate 35 and the I-shaped plate 35, the inserted insert The connecting plate 38 is inserted into the socket slot on the side wall of the fixing plate 34, so as to play a role in supporting the I-shaped plate 35. After the distance is adjusted, the obtained gear blank is placed on the corresponding placement component 37. , by placing the assembly 37 to limit and fix it, so as to prevent the falling phenomenon during the isothermal normalizing process of the gear blank, and then cause a certain impact on the gear blank.

7 and 8, the placement assembly 37 includes a suspension rod 371, a spring rod 372 and a fixed block 373, and the suspension rod 371 for placing the gear is fixed on the limit block 36, and the suspension rod 371 is away from One end of the limit block 36 is provided with a fixed groove, and two fixed stoppers 373 are fixedly installed in the fixed groove by a spring rod 372, and the opposite sides of the two suspension rods 371 form a figure-eight structure whose small-diameter end is far away from the limit block 36 .

After the I-shaped plate 35 is supported, the gear blank that needs isothermal normalizing treatment is placed on the suspension rod 371 at this time, and the figure-eight structure formed by the two 373 opposite sides in the same fixing groove can conveniently push the gear blank on the suspension rod 371. Movement is carried out on the suspension rod 371, when the gear blank touches the fixed stop 373, the gear blank pushes the fixed stop 373 to make it move towards the fixed groove, and simultaneously squeezes the spring rod 372, when the gear blank and the limit block are pushed After one end of 36 is in contact, the gear blank crosses the fixed block 373. At this time, under the action of the spring rod 372, the fixed stop 373 returns to its original position and is closely attached to the surface of the gear blank to limit and fix the gear blank, which is convenient. To ensure the fast loading and unloading of gears, the set limit block 36 can be rotated in the placement groove. In order to avoid collisions between the gear blanks, the unused suspension rod 371 can be moved to the placement groove by turning the limit block 36 upwards. Inside, after the gear blank is limited and fixed, the U-shaped plate 31 is inserted into the sliding groove on the furnace body 21 at this time, and the I-shaped plate 31 makes the I-shaped plate 35 on the fixed plate 34 drive the gear that is limited and fixed The billet enters the furnace body 21, and when the concave surface of the arc-shaped plate 32 presses against the outer ring wall of the furnace body 21, the clamping assembly 24 is used to clamp and fix the U-shaped plate 31 to prevent the process of isothermal normalizing treatment. The middle-shaped plate 31 moves to avoid affecting the isothermal normalizing treatment of the gear blank. After the full-shaped plate 31 is inserted into the furnace body 21, the gear blank can be subjected to isothermal normalizing treatment.

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 slides through the furnace body 21, and the clamping plate 241 slides through the furnace body 21. One end of the clamping plate 241 located in the furnace body 21 is inclined upwards away from the center of the furnace body 21, and the side wall of the clamping plate 241 located at one end outside the furnace body 21 is fixedly equipped with a pressing plate 242, which is moved between the pressing plate 242 and the furnace body 21. The springs 243 are connected, and the pressing plate 242 is provided with a rectangular through hole. The vertical section of the rectangular through hole is a right-angled trapezoidal structure with a small diameter end facing away from the center of the furnace body 21 horizontally. The top of the furnace body 21 is close to the center of the furnace body 21. The vertical plate 244 evenly arranged in the circumferential direction is provided with a moving block 246, and one end of the vertical plate 244 away from the furnace body 21 is slidably connected in the moving block 246 by a push spring 245, and one end of the moving block 246 is connected to a rectangular through hole corresponding to its position Slidingly connected, the other end of the moving block 246 is connected with the drive assembly 23;

In the original state, the clamping plate 241 is positioned in the furnace body 21 under the action of the moving spring 243 by the pressing plate 242. During the process of inserting the U-shaped plate 31, the horizontal section of the U-shaped plate 31 first contacts the inclined surface of the clamping plate 241. , so as to push the clamping plate 241 to move upwards to facilitate the entry of the U-shaped plate 31. When the limit groove is facing the clamping plate 241, under the reaction force of the moving spring 243, the end of the clamping plate 241 where the inclined surface is located Snap into the limiting groove on the U-shaped plate 31, and then limit and fix the U-shaped plate 31 to prevent the U-shaped plate 31 from moving during the isothermal normalizing process.

Referring to Figures 5 and 9, the moving assembly 25 includes a telescopic rod 251, a drive motor 252, a sprocket 253 and a chain ring 254, and the bottom of the furnace body 21 slides evenly along the circumferential direction and is connected with a telescopic rod 251. One end of the telescopic rod 251 located in the furnace body 21 is inserted into the spline groove corresponding to its position, and the drive motor 252 is fixedly installed on the fixed base plate, and the output shaft of the drive motor 252 is fixedly connected with one of the telescopic rods 251, and the remaining telescopic rods The bottom of 251 is rotationally connected with the fixed base plate, and sprockets 253 are fixedly installed on the telescopic rods 251, and a plurality of sprockets 253 are connected by a chain ring 254 transmission.

After all the yoke-shaped plates 31 are inserted into the furnace body 21, the telescopic rod 251 is manually moved so that the telescopic rod 251 is inserted into the spline groove provided on the rotating rod 33 at the lower side, and the driving motor 252 is started at this moment, and the driving motor 252 drives one of the telescopic rods 251 to rotate. At this time, under the action of the chain ring 254, multiple sprockets 253 drive the telescopic rod 251 to rotate. The telescopic rod 251 makes the fixed plate 34 drive the I-shaped plate 35 to rotate, and then drives the limiter. The fixed gear blank is rotated, so that the gear blank can be heated more uniformly during the isothermal normalizing process, thereby improving the quality of the gear blank.

Referring to Fig. 3 and Fig. 5, described driving assembly 23 comprises circular rod 231, No. 1 round table block 232, No. 2 round table block 233, L-shaped plate 234 and fixed block 235, the other end of described moving block 246 is with same The annular surface of a No. 1 round table block 232 is in contact, and the No. 1 round table block 232 is set on one end of the circular rod 231. The other end of the circular rod 231 slides through the furnace body 21 and is installed with a No. 2 round table block 233. The circular rod 231 An L-shaped plate 234 is installed on the top, and the No. 1 round platform block 232 on the same round bar 231 is located between the No. 2 round platform block 233 and the round bar 231. The side wall of the furnace body 21 is equipped with a two-way electric push rod. The fixed block 235, the two moving ends of the two-way electric push rod are respectively fixedly connected with the vertical sections of the corresponding L-shaped plates 234;

Referring to Fig. 5 and Fig. 7, the middle part of the annular plate 22 slides evenly and horizontally through the structural plate 221 along the circumferential direction, and the end of the structural plate 221 located outside the annular plate 22 is fixedly equipped with a push plate 222, and the push plate 222 and the annular plate 22 are connected by a plurality of return springs 223, and the upper and lower sides of one end of the structural plate 221 located in the annular plate 22 are arc-shaped.

After the isothermal normalizing treatment of the gear blank, the telescopic rod 251 is separated from the spline groove manually, and then the two-way electric push rod is started, and the two-way electric push rod makes the L-shaped plate 234 drive the upper and lower circular rods 231 to move relative to each other, so that The No. 1 round platform block 232 on the circular rod 231 first touches the moving block 246, and during the downward movement of the No. 1 round platform block 232, the moving block 246 is pushed to move horizontally along the rectangular through hole, and when the moving block 246 and the rectangular through hole Under the matching of the inclined surfaces of the holes, the clamping plate 241 drives the moving block 242 to move away from the direction of the 匚-shaped plate 31, so that the clamping plate 241 first breaks away from the limiting groove on the 匚-shaped plate 31. At this time, the circular rod 231 continues to move downwards, so that the circular rod 231 drives the No. 2 round table block 233 to squeeze the structural plate 221, and the structural plate 221 drives the push plate 222 to move horizontally synchronously to push the 匚-shaped plate 31 to the outside of the furnace body 21 to realize all 匚-shaped plates 31 synchronous blanking, thereby improving the blanking efficiency of the equipment.

When working specifically:

In the first step, in the original state, the blank for making the gear is first subjected to hot die forging through a hot forging press, and finally the gear blank is manufactured by upsetting the billet.

The second step is to adjust the distance between the I-shaped plate 35 and the I-shaped plate 35 on the fixed plate 34. After adjusting the distance between the I-shaped plate 35 and the I-shaped plate 35, the plug-in plate 38 that will be set will Insert it into the socket slot on the side wall of the fixed plate 34, so as to play a role in supporting the I-shaped plate 35. After the distance is adjusted, the gear blank that needs isothermal normalizing treatment is placed on the suspension rod 371. When the gear blank touches the fixed stop 373, the gear blank pushes the fixed stop 373 to make it move toward the fixed groove, and simultaneously squeezes the spring rod 372. When the gear blank is pushed into contact with one end of the limit block 36, The gear blank crosses the fixed block 373, and now under the action of the spring bar 372, the fixed block 373 is returned to its original position and is closely attached to the surface of the gear blank to limit and fix the gear blank, which facilitates the fast loading and unloading of the gear.

In the third step, the U-shaped plate 31 is inserted into the furnace body 21. The U-shaped plate 31 makes the I-shaped plate 35 on the fixed plate 34 drive the limit-fixed gear blank into the furnace body 21. When the curved plate 32 When the concave surface is pressed against the outer ring wall of the furnace body 21, the horizontal section of the U-shaped plate 31 first contacts the inclined surface of the clamping plate 241, thereby pushing the clamping plate 241 to move upwards to facilitate the entry of the U-shaped plate 31. When the clamping plate 241 is directly facing each other, under the reaction force of the moving spring 243, the end of the clamping plate 241 where the inclined surface is located is snapped into the limiting groove on the U-shaped plate 31, thereby limiting the position of the U-shaped plate 31 Fixed to prevent the U-shaped plate 31 from moving during the isothermal normalizing treatment. After inserting the U-shaped plate 31 into the furnace body 21, manually move the telescopic rod 251 so that the telescopic rod 251 is inserted into the rotating rod on the lower side 33, start the drive motor 252 at this time, and the drive motor 252 drives one of the telescopic rods 251 to rotate. At this time, under the action of the chain ring 254, multiple sprockets 253 drive the telescopic rod 251 to rotate. The rod 251 makes the fixed plate 34 drive the I-shaped plate 35 to rotate, and then drives the fixed gear blank to rotate, so that the gear blank can be heated more evenly during the isothermal normalizing process.

In the fourth step, after the isothermal normalizing treatment of the gear blank, the telescopic rod 251 is separated from the spline groove manually, and then the two-way electric push rod is started, and the two-way electric push rod makes the L-shaped plate 234 drive the upper and lower circular rods 231 for relative Movement, so that the No. 1 round platform block 232 on the circular rod 231 first touches the moving block 246, during the downward movement of the No. 1 round platform block 232, the moving block 246 is pushed to move horizontally along the rectangular through hole, and the moving block 246 Cooperating with the inclined surfaces of the rectangular through holes, the clamping plate 241 drives the moving block 242 to move away from the direction of the 匚-shaped plate 31, so that the clamping plate 241 first breaks away from the limiting groove on the 匚-shaped plate 31. At this time, the circular The rod 231 continues to move downwards, so that the circular rod 231 drives the No. 2 round table block 233 to squeeze the structural plate 221, and the structural plate 221 drives the push plate 222 to move horizontally synchronously to push the 匚-shaped plate 31 to the outside of the furnace body 21 to realize all 匚-shaped The board 31 is unloaded synchronously, thereby improving the unloading efficiency of the equipment.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the specification only illustrate the principles of the present invention, and without departing from the spirit and scope of the present invention, the present invention will also There are various changes and improvements which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A gear forging isothermal normalizing processing technology is characterized in that: its gear forging isothermal normalizing processing specifically comprises the following steps: S1. Forging blanks: first, the blanks for making gears are hot forged by a hot forging press, and finally the gear blanks are manufactured by upsetting blanks; S2, gear placement: place the gear blanks obtained in the step S1 on the fixing device (3) in batches; S3, normalizing treatment: finally put the fixing device (3) for fixing the gear blank in the step S2 into the furnace charging device (2), and carry out normalizing treatment to the gear blank; The gear forging isothermal normalizing processing technology using the above steps S1-S3 also specifically involves a gear forging isothermal normalizing processing equipment in the process of isothermally normalizing the gear forging, including a base (1), and the base ( 1) It consists of a fixed bottom plate and four supporting legs. A furnace loading device (2) is installed on the top of the base (1), and a fixing device (3) is arranged inside the furnace loading device (2); The furnace loading device (2) includes a furnace body (21), and the tops of the four supporting legs are jointly fixed with the furnace body (21). The furnace body (21) is in a hollow circular barrel structure, and the furnace body (21) The side wall is evenly provided with a sliding groove connected to the center of the furnace body (21) along the circumference, and an annular plate (22) is installed at the center of the furnace body (21), and the top and bottom of the furnace body (21) are symmetrically provided with A symmetrical driving assembly (23), and the top and bottom of the furnace body (21) are symmetrically provided with clamping assemblies (24) arranged uniformly along the circumference of the furnace body (21) at a position away from the center of the furnace body (21), The bottom of the furnace body (21) is also provided with a moving assembly (25). 2. The isothermal normalizing process for gear forgings according to claim 1, characterized in that: the fixing device (3) includes a yoke-shaped plate (31), and the furnace body (21) is along the circumferential direction All slide grooves provided are provided with a 匚-shaped plate (31), and the opening section of the 匚-shaped plate (31) faces away from the center of the body of heater (21) and is fixedly installed with an arc with the inner concave surface and the inner concave surface in contact with the outer ring wall. shaped plate (32), the end of the curved plate (32) away from the outer ring wall of the body of furnace (21) is fixedly equipped with a handle, and the opposite sides of the two horizontal sections of the u-shaped plate (31) are all provided with limit grooves, and the u-shaped The vertical section of the plate (31) is uniformly provided with evenly distributed heat dissipation holes, and the rotating rod (33) connected by rotation is jointly installed with a fixed plate (34) between the two horizontal sections of the Yi-shaped plate (31). The bottom of the rotating rod (33) on the side is provided with a spline groove, and the fixed plate (34) is provided with a rectangular through groove, and a plurality of I-shaped plates (35) in the shape of an I are vertically slidably connected in the rectangular through groove. The tops of the two vertical sections of the plate (35) are evenly provided with placing slots, and the limiting blocks (36) are set in the placing slots through the rotation of pin shafts, and the limiting blocks (36) are all provided with placement components for placing gear blanks ( 37), both sides of the fixed plate (34) are symmetrically provided with inserting slots that are evenly arranged from top to bottom and communicate with the rectangular through slots, and slide and clamp in the inserting slots corresponding to the position of the I-shaped plate (35) There is a socket plate (38) for supporting the I-shaped plate (35). 3. A gear forging isothermal normalizing process according to claim 1, characterized in that: the middle part of the annular plate (22) slides evenly and horizontally through the structural plate (221) along the circumferential direction, and the structural plate (221 ) is fixedly installed with a push plate (222) at one end of the outer side of the annular plate (22), the push plate (222) and the annular plate (22) are connected by multiple return springs (223), and the structural plate (221) is located at One end in the annular plate (22) has an arc-shaped structure on the upper and lower sides. 4. The isothermal normalizing process for gear forgings according to claim 1, characterized in that: the clamping assembly (24) includes a clamping plate (241), and the clamping plate (241) slides through the furnace body (21), the clamping plate (241) is located at one end of the furnace body (21) and the side away from the center of the furnace body (21) is inclined upwards, and the clamping plate (241) is located at one end of the furnace body (21) and fixed on the side wall A pressing plate (242) is installed, and the pressing plate (242) and the furnace body (21) are connected by a moving spring (243). The pressing plate (242) is provided with a rectangular through hole, and the vertical section of the rectangular through hole is a small diameter end. A right-angled trapezoidal structure facing away from the center of the furnace body (21) horizontally, the top of the furnace body (21) and near the center of the furnace body (21) are provided with a moving block (246) through a vertical plate (244) uniformly arranged in the circumferential direction, One end of the vertical plate (244) away from the furnace body (21) is slidably connected in the moving block (246) by a push spring (245), and one end of the moving block (246) is slidably connected with a rectangular through hole corresponding to its position, and the moving block The other end of (246) is connected with driving assembly (23). 5. The isothermal normalizing process for gear forgings according to claim 4, characterized in that: the drive assembly (23) includes a circular rod (231), and the other end of the moving block (246) In contact with the annular surface of the same No. 1 round table block (232), the No. 1 round table block (232) is sleeved on one end of the round rod (231), and the other end of the round rod (231) slides through the back of the furnace body (21) No. two round platform blocks (233) are installed, and L-shaped plate (234) is installed on the circular bar (231), and No. one round platform block (232) on the same circular bar (231) is positioned at No. two round platform blocks (233 ) and the circular rod (231), the side wall of the furnace body (21) is equipped with a fixed block (235) with a fixed two-way electric push rod, and the two moving ends of the two-way electric push rod are respectively connected to the corresponding L The vertical section of shaped plate (234) is fixedly connected. 6. The isothermal normalizing process for gear forgings according to claim 2, characterized in that: the moving assembly (25) includes a telescopic rod (251), and the bottom of the furnace body (21) is along the circumference A telescopic rod (251) is connected to evenly slide through, and one end of the telescopic rod (251) located in the furnace body (21) is plugged into a spline groove corresponding to its position, and a drive motor (252) is fixedly installed on the fixed base plate. The output shaft of the driving motor (252) is fixedly connected to one of the telescopic rods (251), and the bottom of the remaining telescopic rods (251) is rotationally connected to the fixed base plate, and the sprockets (253) are fixedly installed on the telescopic rods (251). , a plurality of sprockets (253) are connected through a chain ring (254) transmission. 7. The isothermal normalizing process for gear forgings according to claim 2, characterized in that: the placement assembly (37) includes a suspension rod (371), and the stop blocks (36) are all fixed There is a suspension rod (371) for placing gears, and the end of the suspension rod (371) away from the limit block (36) is provided with a fixed groove, and two fixed blocks (373) are fixedly installed in the fixed groove by a spring rod (372) , the opposite sides of the two suspension rods (371) form a figure-eight structure in which the small-diameter end is away from the stop block (36).

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