CN212239890U - Equipment for manufacturing bearing ring blank - Google Patents

Abstract

The utility model discloses a device for manufacturing a bearing ring blank, which comprises an automatic cutting device, an automatic feeding device, a heating device, an automatic conveying device, a ring rolling machine and an automatic conveying device; the automatic feeding device is arranged below the automatic cutting device and used for conveying the steel pipe short sections to the heating device; a feeding channel is arranged at the top of the heating device, a discharging channel is arranged at the bottom of the heating device, and the heated steel pipe short section is discharged from the discharging channel; the automatic conveying device is arranged near the discharge port and is used for conveying the heated steel pipe short sections discharged from the discharge channel to the ring rolling machine; the ring rolling machine is used for rolling the heated steel pipe short section into a bearing ring blank prefabricated product; the automatic conveying device is provided with a spray cooling device, and the spray cooling device is used for cooling the bearing ring blank prefabricated product to obtain the bearing ring blank. The equipment has high processing efficiency, and no net-shaped carbide is formed on the surface of the obtained bearing ring blank.

Description

Equipment for manufacturing bearing ring blank

Technical Field

The utility model relates to an equipment of manufacturing bearing ring blank, in particular to utilize seamless steel pipe to make equipment of bearing ring blank.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The bearing ring is an important component of the bearing.

CN102267040B discloses a method for preparing a stainless steel bearing ring, which comprises the following steps: heating the round bar stock and perforating to obtain a tube blank; carrying out isothermal annealing on the tube blank, and then rolling the tube blank to form a bearing steel tube with a specified size; and annealing the rolled bearing steel pipe, and then cutting to obtain the bearing ring. The method needs to be heated and cooled for many times, the energy consumption is high, the surface of the bearing ring can generate reticular carbide, and the patent document does not relate to equipment for manufacturing the bearing ring blank.

CN101718305B discloses a manufacturing method of bearing ring and a manufacturing device of bearing ring blank. The method comprises the following steps: the method comprises the steps of sawing a bar stock to a specified size, feeding the bar stock into a heating device to enable the temperature to reach a preset value, feeding the bar stock into a puncher to manufacture a pierced billet, cooling the pierced billet, randomly transferring the pierced billet into a rolling ring slitting bearing ring blank manufacturing device, and continuously working and processing a bearing ring blank through a rolling ring forming and rolling cutting device arranged in the rolling ring slitting bearing ring blank manufacturing device. The patent also provides a bearing ring blank manufacturing device for manufacturing the bearing ring, which comprises a bar sawing machine, a heating device and a perforating machine which are arranged in sequence, wherein a temperature control device, a rolling ring slitting bearing ring blank manufacturing device and a shot blasting device are arranged in the subsequent process of the perforating machine. The method needs a complex shot blasting process, and the automation degree of the used bearing ring blank manufacturing equipment is low.

CN108145048A discloses a bearing ring numerical control ring rolling automatic molding process, which comprises the following steps: (1) sawing the bar stock to a specified size by cutting the bearing ring blank manufacturing equipment; (2) inputting the cut bar stock into a heating furnace and heating to a preset value; (3) outputting the heated bar stock from the heating furnace, and conveying the bar stock into a perforating machine for perforation to form a pierced billet; (4) inputting the pierced billet into a forming channel of bearing ring blank manufacturing equipment for forming a bearing ring blank by numerical control ring rolling of a bearing ring; (5) the pierced billet placed in the forming channel is driven to automatically transmit at a constant speed by the rotation of a forming assembly of the bearing ring numerical control ring rolling forming bearing ring blank manufacturing equipment, and the pierced billet is synchronously subjected to preliminary ring rolling and cutting by the forming assembly in the conveying process so as to be formed into a plurality of bearing ring forming rings in an equal division manner; (6) and (3) performing secondary ring rolling and cutting on the bearing ring forming ring to obtain a bearing ring blank, and driving the bearing ring blank to be output from the output end of the forming channel through the rotation of the forming assembly. The method needs secondary ring rolling and cutting, and the process is complex.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an equipment of manufacturing bearing ring blank, the machining efficiency of this equipment is high, and the surperficial no net carbide of gained bearing ring blank forms.

The technical problem is solved by the following technical scheme.

The utility model provides an equipment of manufacturing bearing ring blank, a serial communication port, include: the automatic ring rolling machine comprises an automatic cutting device, an automatic feeding device, a heating device, an automatic conveying device, a ring rolling machine and an automatic conveying device;

the automatic cutting device is used for cutting the hot-rolled thick-wall seamless steel pipe into a steel pipe short section;

the automatic feeding device is arranged below the automatic cutting device and is used for conveying the steel pipe short sections to the heating device;

the heating device is arranged below the automatic feeding device and used for heating the steel pipe short section to a specified temperature; a feeding channel is arranged at the top of the heating device, and the steel pipe short section enters the heating device through the feeding channel; a discharging channel is arranged at the bottom of the heating device, a discharging port is formed in the discharging channel, and the heated steel pipe short section is discharged from the discharging port;

the automatic conveying device is arranged near a discharge port of the discharge channel and is used for conveying the heated steel pipe short sections discharged from the discharge channel to the ring rolling machine;

the ring rolling machine is used for rolling the heated steel pipe short sections conveyed by the automatic conveying device into bearing ring blank prefabricated products;

the automatic conveying device is provided with a spray cooling device and is used for conveying the bearing ring blank prefabricated product into the cooling range of the spray cooling device; and the spray cooling equipment is used for cooling the bearing ring blank prefabricated product to obtain the bearing ring blank.

According to the apparatus of the present invention, preferably, the automatic feeding device comprises a feeding conveyor belt and an automatic feeder;

the feeding conveyer belt is arranged below the automatic cutting device and used for conveying the steel pipe short sections to the automatic feeding machine;

the automatic feeding machine is arranged below the feeding conveying belt and used for receiving the steel pipe short sections conveyed by the feeding conveying belt and supplying the steel pipe short sections to the heating device.

According to the apparatus of the present invention, preferably, the discharge channel is provided with a first discharge port and a second discharge port; the automatic conveying devices comprise two groups, namely a first automatic conveying device and a second automatic conveying device; the ring rolling machines comprise two groups, namely a first ring rolling machine and a second ring rolling machine;

the first automatic conveying device is used for conveying the steel pipe short sections discharged from the first discharge hole to the first ring rolling machine;

the first ring rolling machine is used for rolling the steel pipe short sections conveyed by the first automatic conveying device into bearing ring blank prefabricated products;

the second automatic conveying device is used for conveying the steel pipe short sections discharged from the second discharge hole to the second ring rolling machine;

and the second ring rolling machine is used for rolling the steel pipe short sections conveyed by the second automatic conveying device into the bearing ring blank prefabricated product.

According to the utility model discloses an equipment, preferably, the ejection of compact material is said and is the arch, first discharge gate and second discharge gate set up respectively at the both ends that the ejection of compact material was said.

According to the utility model discloses an equipment, preferably, equipment still include the automatic feeding rack, the automatic feeding rack sets up in automatic cutting device's top, and to automatic cutting device's blank position one side downward sloping setting, it is used for supplying with the seamless steel pipe of hot rolling thick wall to automatic cutting device.

According to the apparatus of the present invention, preferably, the automatic feeding rack comprises a first automatic feeding rack and a second automatic feeding rack, and the automatic cutting device comprises a first automatic cutting device and a second automatic cutting device;

the first automatic feeding rack is arranged above the first automatic cutting device, is downwards inclined towards one side of a material cutting part of the first automatic cutting device and is used for supplying hot-rolled thick-walled seamless steel pipes to the first automatic cutting device;

the second automatic feeding rack is arranged above the second automatic cutting device, is downwards inclined towards one side of a material cutting part of the second automatic cutting device and is used for supplying hot-rolled thick-walled seamless steel pipes to the second automatic cutting device.

According to the device of the present invention, preferably, the device further comprises a palletizing robot and a palletizing collector;

the stacking robot is used for transferring the bearing ring blank on the automatic conveying device to a stacking collector;

the stacking collector is used for collecting the bearing ring blank.

According to the utility model discloses an equipment, preferably, automatic cutting device is numerical control circular saw, heating device is intermediate frequency heating furnace, automatic conveyor is the arm.

According to the equipment of the utility model, preferably, the automatic conveying device comprises a discharging conveying belt and a conveying belt, and a spray head of the spray cooling equipment is arranged above the conveying belt;

the ring rolling machine is provided with a discharge port, and the discharge conveyer belt is arranged near the discharge port of the ring rolling machine and used for conveying the bearing ring blank prefabricated product to the conveyer belt;

the conveyor belt is connected with the discharge conveyor belt, and the bearing ring blank prefabricated product is cooled on the conveyor belt by spray cooling equipment to form the bearing ring blank.

According to the apparatus of the present invention, preferably, the automatic conveying device comprises a first discharge conveyor belt, a second discharge conveyor belt and a conveyor belt; the stacking collector is arranged at one end of the conveyor belt, and a spray head of the spray cooling equipment is arranged above the conveyor belt;

the first ring rolling machine is provided with a discharge port, and the first discharge conveyer belt is arranged near the discharge port of the first ring rolling machine and used for conveying the bearing ring blank prefabricated product formed by the first ring rolling machine to the conveyer belt;

the second ring rolling machine is provided with a discharge hole, and the second discharge conveyer belt is arranged near the discharge hole of the second ring rolling machine and used for conveying the bearing ring blank prefabricated product formed by the second ring rolling machine to the conveyer belt;

the conveyer belt is respectively connected with the first discharging conveyer belt and the second discharging conveyer belt, the bearing ring blank prefabricated product is cooled on the conveyer belt by spray cooling equipment to form a bearing ring blank, and the bearing ring blank is conveyed to an area capable of being picked up by a stacking robot through the conveyer belt and transferred to a stacking collector through the stacking robot.

The utility model discloses an equipment is high at the in-process degree of automation of making the bearing ring blank, need not manual operation. Only one step of heating and cooling is needed, and the energy consumption is low. And (3) cooling by adopting a spraying device, wherein the cooling speed is high, and no net-shaped carbide is formed on the surface of the obtained bearing ring blank.

Drawings

Fig. 1 is the equipment for manufacturing the blank of the bearing ring of the present invention.

Fig. 2 is another apparatus for manufacturing a blank of a bearing ring according to the present invention.

The reference numerals are detailed below:

100-automatic feeding rack; 1-a first automatic feeding rack; 2-a second automatic feeding rack; 200-an automatic cutting device; 3-a first automatic cutting device; 4-a second automatic cutting device; 300-an automatic feeding device; 5-a feed conveyor belt; 6-automatic feeding machine; 7-a feeding channel; 8-a heating device; 9-discharging material channel; 500-ring rolling machine; 10-a first ring rolling machine; 11-a second ring rolling machine; 400-an automatic conveying device; 12-a first automatic conveyor; 13-a second automatic conveyor; 600-an automated transport device; 700-discharge conveyor belt; 14-a first outfeed conveyor belt; 15-a second discharge conveyor belt; 16-a conveyor belt; 17-a spray cooling device; 18-a palletizing robot; 19-palletizing collector.

Detailed Description

The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.

< apparatus for manufacturing bearing ring blank >

The utility model discloses an equipment of manufacturing bearing ring blank includes: the automatic ring rolling machine comprises an automatic cutting device, an automatic feeding device, a heating device, an automatic conveying device, a ring rolling machine and an automatic conveying device. Optionally, the apparatus of the present disclosure may further comprise one or more of an automatic feeding gantry, a palletizing robot, and a palletizing collector.

Automatic cutting device

The utility model discloses an automatic cutting device is used for cutting into the seamless steel pipe nipple joint of hot rolling thick wall. The utility model discloses an automatic cutting device can set up to a set of also can set up to the multiunit. For example two groups, a first automatic cutting device and a second automatic cutting device. The top of the automatic cutting device is provided with a feeding hole, and the bottom of the automatic cutting device is provided with a discharging hole. The hot-rolled thick-wall seamless steel pipe enters from a feed inlet of the automatic cutting device, the automatic cutting device cuts the hot-rolled thick-wall seamless steel pipe into a steel pipe short section, and the steel pipe short section is discharged from a discharge outlet of the automatic cutting device. According to the utility model discloses an embodiment, automatic cutting device is numerical control circular saw dish.

Automatic feeding device

The automatic feeding device is arranged below the automatic cutting device and used for conveying the steel pipe short sections to the heating device. According to the utility model discloses an embodiment, automatic feed device includes feeding conveyer belt and automatic feeding machine. The feeding conveyer belt is arranged below the automatic cutting device and used for conveying the steel pipe short sections to the automatic feeding machine. The automatic feeding machine is arranged below the feeding conveying belt and used for receiving the steel pipe short sections conveyed by the feeding conveying belt and supplying the steel pipe short sections to the heating device. The top of the automatic feeding machine is provided with a feeding hole, and the bottom of the automatic feeding machine is provided with a discharging hole.

Heating device

Heating device sets up in automatic feed device's below, and it is used for heating steel pipe nipple joint to appointed temperature. The heating device can be an intermediate frequency heating furnace. The top of the heating device is provided with a feeding channel, and the steel pipe short section enters the heating device through the feeding channel. The bottom of the heating device is provided with a discharging channel, the discharging channel is provided with a discharging port, and the heated steel pipe nipple is discharged from the discharging port. In some embodiments, the discharge channel is provided with two discharge ports, namely a first discharge port and a second discharge port. According to the utility model discloses an embodiment, the ejection of compact material is said and is the arch, and the both ends that the ejection of compact material was said are provided with first discharge gate and second discharge gate respectively.

The discharge port of the discharge channel can be provided with a temperature identification and automatic screening system which is used for automatically identifying the steel pipe short sections with the specified temperature and the steel pipe short sections with the non-specified temperature, rejecting the steel pipe short sections with the non-specified temperature and sending the steel pipe short sections with the specified temperature into the automatic conveying device.

Automatic conveying device

The automatic conveying device is arranged near a discharge port of the discharge channel and is used for conveying the heated steel pipe short sections discharged from the discharge channel to the ring rolling machine. The automated conveying means may be a robotic arm. In certain embodiments, the automated transport device comprises a first automated transport device and a second automated transport device. The first automatic conveying device is arranged near the first discharge port and used for conveying the steel pipe short sections discharged from the first discharge port to the first ring rolling machine. The second automatic conveying device is arranged near the second discharge port and used for conveying the steel pipe short sections discharged from the second discharge port to the second ring rolling machine.

Ring rolling machine

And the ring rolling machine is used for rolling the steel pipe short sections conveyed by the automatic conveying device into the bearing ring blank prefabricated product. In some embodiments, the ring rolling machines include two sets, a first ring rolling machine and a second ring rolling machine. And the first ring rolling machine is used for rolling the steel pipe short sections conveyed by the first automatic conveying device into the bearing ring blank prefabricated product. And the second ring rolling machine is used for rolling the steel pipe short sections conveyed by the second automatic conveying device into the bearing ring blank prefabricated product.

Automatic conveying device

The automatic conveying device is provided with a spray cooling device. The automatic conveying device is used for conveying the bearing ring blank prefabricated product to the cooling range of the spray cooling equipment. In certain embodiments, the robotic transport device also transports the bearing ring blank to a collection device. The collecting means may be a palletising collector. In certain embodiments, the automated conveying device comprises an outfeed conveyor belt and a conveyor belt. The discharging conveyer belt is arranged near the discharging port of the ring rolling machine and conveys the bearing ring blank prefabricated product formed by the ring rolling machine to the conveyer belt. The conveying belt is connected with the discharging conveying belt. In other embodiments, the automated transport device includes a first outfeed conveyor belt, a second outfeed conveyor belt, and a conveyor belt. The first discharging conveyer belt is arranged near the discharging port of the first ring rolling machine and is used for conveying the bearing ring blank prefabricated products formed by the first ring rolling machine to the conveyer belt. And the second discharge conveyer belt is arranged near the discharge port of the second ring rolling device and is used for conveying the bearing ring blank prefabricated products formed by the second ring rolling machine to the conveyer belt. The conveyer belt links to each other with first ejection of compact conveyer belt and second ejection of compact conveyer belt respectively.

The spray head of the spray cooling device may be arranged above the conveyor belt. And cooling the bearing ring blank preform on a conveyor belt by using spray cooling equipment to form the bearing ring blank.

Automatic feeding rack

The utility model discloses an equipment of manufacturing bearing ring blank can also be including the automatic feeding rack. The automatic feeding rack is arranged above the automatic cutting device, is downwards inclined towards one side of a material cutting part of the automatic cutting device, and is used for supplying hot-rolled thick-walled seamless steel pipes to the automatic cutting device. The hot-rolled thick-wall seamless steel pipe is placed on the automatic feeding rack by a crane, and the hot-rolled thick-wall seamless steel pipe automatically leans against one side of a blanking part of the automatic cutting device. The automatic feeding rack can be arranged into one or a plurality of racks. In some embodiments, the automatic loading stand includes two sets, a first automatic loading stand and a second automatic loading stand, respectively. The first automatic feeding rack is arranged above the first automatic cutting device and is arranged downwards to one side of a material cutting part of the first automatic cutting device. The second automatic feeding rack is arranged above the second automatic cutting device and is inclined downwards towards one side of the material cutting part of the automatic cutting device.

Stacking robot and stacking collector

The utility model discloses a make equipment of bearing ring blank can also be including pile up neatly machine people and pile up neatly collector. The palletizing robot is used for transferring the bearing ring blank on the automatic conveying device to the palletizing collector. The stacking robot is arranged above the transmission belt and close to the code section collector. The stacking collector is used for collecting the bearing ring blank. The stacker collector may be provided at one side of the automatic conveying device. According to the utility model discloses an embodiment, the pile up neatly collector sets up the one side at the conveyer belt. The bearing ring blank is conveyed to an area which can be picked up by the palletizing robot through the automatic conveying device and conveyed into the palletizing collector through the palletizing robot.

< method for producing bearing ring blank >

The utility model discloses a method for manufacturing bearing ring blank adopts the equipment described above, specifically includes following step: (1) cutting; (2) heating; (3) a step of ring rolling; and (4) a step of transporting and cooling.

Step of cutting

And cutting the hot-rolled thick-wall seamless steel pipe into a steel pipe nipple by an automatic cutting device. According to the utility model discloses an embodiment places hot rolling thick wall seamless steel pipe on the automatic feeding rack. The hot-rolled thick-wall seamless steel pipe automatically leans to one side of the material cutting part of the automatic cutting device. And (3) feeding the hot-rolled thick-wall seamless steel pipe into an automatic cutting device through an automatic feeding rack, and cutting the steel pipe into short sections through the automatic cutting device.

The utility model discloses in, hot rolling thick wall seamless steel pipe is the hot rolling thick wall seamless steel pipe that is formed by GCr15 bearing steel. The outer diameter of the hot-rolled thick-wall seamless steel pipe can be 60-90 mm; preferably 65-85 mm; more preferably 70 to 75 mm. The thickness of the hot-rolled thick-wall seamless steel pipe can be 5-13 mm; preferably 6-12 mm; more preferably 6 to 10 mm.

Step of heating

And the steel pipe short section enters a heating device through an automatic feeding device to be heated, so that the heated steel pipe short section is obtained. In some embodiments, the steel pipe sub is transported to an automatic feeder via a feed conveyor belt. The automatic feeding machine supplies the received steel pipe short sections conveyed by the feeding conveying belt to the heating device. And heating the steel pipe short section by a heating device to obtain the heated steel pipe short section. And discharging the heated steel pipe short section through a discharge hole of the discharge channel. The heated steel pipe short sections can be discharged from a plurality of discharge ports, such as two. The preheating temperature of the discharge control heating device is 400-700 ℃; preferably 500-700 ℃; more preferably 550 to 700 ℃. The heating temperature is 800-1200 ℃; preferably 800-1100 ℃; more preferably 900 to 1000 ℃.

In some embodiments, the heated steel pipe short sections are screened by a temperature identification and automatic screening system, and the steel pipe short sections with the temperature within the heating temperature range are sent to an automatic conveying device, and the steel pipe short sections with the temperature not within the heating temperature range are removed. Preferably, each discharge hole is provided with a temperature identification and automatic screening system.

Step of ring rolling

And conveying the heated short section of the steel pipe to a ring rolling machine through an automatic conveying device, and rolling into a bearing ring blank prefabricated product. Setting the rolling ratio of a ring rolling machine to be not less than 1.3; preferably 1.3 to 1.8; more preferably 1.4 to 1.6. The end face elongation is 2-6%; preferably 3-6%; more preferably 3 to 5%. The automatic conveying device and the ring rolling machine can be arranged into one group or a plurality of groups. The parameters set by the ring rolling machine can be the same or different. According to an embodiment of the utility model, the parameter that the ring rolling machine set up is the same.

Step of transporting and cooling

And (3) feeding the bearing ring blank prefabricated product into an automatic conveying device, and cooling by using spray cooling equipment of the automatic conveying device to obtain the bearing ring blank. In some embodiments, the bearing ring blank preform is conveyed through the discharge port of the ring rolling machine to a discharge conveyor belt, which conveys the bearing ring blank preform to a conveyor belt. In other embodiments, the bearing ring blank pre-forms formed by the first ring rolling machine are conveyed through the discharge port of the first ring rolling machine to a first discharge conveyor belt, which conveys the bearing ring blank pre-forms to a conveyor belt. And the bearing ring blank prefabricated products formed by the second ring rolling machine are conveyed to a second discharging conveyer belt through a discharge hole of the second ring rolling machine, and the bearing ring blank prefabricated products are conveyed to a conveyer belt by the second discharging conveyer belt. And cooling the bearing ring blank prefabricated product by using spray cooling equipment to form the bearing ring blank. The bearing ring blank is conveyed to an area capable of being picked up by the stacking robot through a conveyor belt and conveyed to a stacking collector through the stacking robot.

The cooling condition is that the temperature of the bearing ring blank prefabricated product is reduced by 55-80 ℃ per hour; preferably 55-70 ℃; more preferably 55 to 60 ℃. And cooling the bearing ring blank preform when the temperature is reduced to 150-250 ℃. Preferably, the cooling is completed when the temperature of the bearing ring blank prefabricated product is reduced to 180-250 ℃. More preferably, the cooling is completed when the temperature of the bearing ring blank prefabricated product is reduced to 180-220 ℃. Such cooling conditions may prevent the formation of network carbides.

Example 1

Fig. 1 is the equipment for manufacturing the blank of the bearing ring of the present invention. As shown in fig. 1, the apparatus for manufacturing a bearing ring blank includes an automatic feeding stage 100, an automatic cutting device 200, an automatic feeding device 300, a heating device 8, an automatic conveying device 400, a ring rolling machine 500, an automatic conveying device 600, a spray cooling device 17, a palletizing robot 18, and a palletizing collector 19.

The automatic feeding stand 100 is provided above the automatic cutting apparatus 200, and supplies the hot-rolled thick seamless steel pipe to the automatic cutting apparatus 200. The automatic feeding stage 100 is provided to be inclined downward toward the side of the cutting portion of the automatic cutting apparatus 200.

The automatic cutting device 200 is a numerical control circular saw and cuts the hot-rolled thick-wall seamless steel pipe into short steel pipe sections.

The automatic feeding device 300 includes a feeding conveyor belt 5 and an automatic feeder 6. The feeding conveyer belt 5 is arranged below the automatic cutting device 200 and conveys the steel pipe short sections to the automatic feeding machine 6. The automatic feeding machine 6 is arranged below the feeding conveying belt 5, receives the steel pipe short sections conveyed by the feeding conveying belt 5, and supplies the steel pipe short sections to the heating device 8.

Heating device 8 is intermediate frequency heating furnace, and it sets up in automatic feeding machine 6's below, heats the steel pipe nipple joint to the assigned temperature, forms the steel pipe nipple joint after the heating. The top of the heating device 8 is provided with a feeding channel 7. The steel pipe short section enters a heating device 8 through a feeding channel 7. The bottom of the heating device 8 is provided with a discharging channel 9. The end part of the discharging channel 9 is provided with a discharging hole. And discharging the heated steel pipe short section from a discharge hole.

The discharge port of the discharge channel 9 is provided with a temperature identification and automatic screening system, so that the steel pipe short sections at specified temperatures and the steel pipe short sections at non-specified temperatures can be automatically identified, the steel pipe short sections at non-specified temperatures are removed, and the steel pipe short sections at the specified temperatures are sent into the automatic conveying device.

An automatic conveying device 400 is arranged near the discharge port of the discharge channel 9 and is a mechanical arm which conveys the steel pipe short section with the specified temperature to the ring rolling machine 500. The ring rolling machine 500 rolls the short section of steel pipe into a preform of the bearing ring blank.

The automatic transfer device 600 includes an outfeed conveyor belt 700 and a conveyor belt 16. The ring rolling machine 500 is provided with a discharge port. An outfeed conveyor 700 is positioned near the outfeed of the ring rolling machine 500 to convey the bearing ring blank preforms formed by the ring rolling machine 500 to the conveyor 16. The conveyor 16 is connected to an outfeed conveyor 700.

The spray head of the spray cooling device 17 is arranged above the conveyor belt 16 to cool the bearing ring blank preform to form the bearing ring blank. A palletising collector 19 is provided at one end of the conveyor belt 16. A palletizing robot 18 is arranged above the conveyor belt 14 and close to the code collector 19. The bearing ring blank is transferred via a conveyor belt 16 to an area where it can be picked up by a palletizing robot 18 and transported by the palletizing robot 18 into a palletizing collector 19.

Example 2

Fig. 2 is another apparatus for manufacturing a blank of a bearing ring according to the present invention. As shown in fig. 2, the apparatus for manufacturing a bearing ring blank includes an automatic feeding stage 100, an automatic cutting device 200, an automatic feeding device 300, a heating device 8, an automatic conveying device 400, a ring rolling machine 500, an automatic conveying device 600, a spray cooling device 17, a palletizing robot 18, and a palletizing collector 19.

The automatic feeding stage 100 includes two sets, which are a first automatic feeding stage 1 and a second automatic feeding stage 2, respectively. The automatic cutting device 200 includes two sets, a first automatic cutting device 3 and a second automatic cutting device 4. The first automatic feeding stage 1 is provided above the first automatic cutting device 3, and supplies the hot-rolled thick seamless steel pipe to the first automatic cutting device 3. The first automatic feeding frame table 1 is arranged to incline downwards towards one side of the material cutting part of the first automatic cutting device 3. The second automatic feeding stand 2 is provided above the second automatic cutting device 4, and supplies the hot-rolled thick seamless steel pipe to the second automatic cutting device 4. The second automatic feeding stand 2 is arranged to be inclined downward toward one side of the material cutting part of the second automatic cutting device 4. And the first automatic cutting device 3 and the second automatic cutting device 4 are used for cutting the hot-rolled thick-wall seamless steel pipe into a short section of steel pipe. The first automatic cutting device 3 is a numerical control circular saw, and the second automatic cutting device 4 is a numerical control circular saw.

The automatic feeding device 300 includes a feeding conveyor belt 5 and an automatic feeder 6. The feeding conveyer belt 5 is arranged below the automatic cutting device 200 and conveys the steel pipe short sections to the automatic feeding machine 6. The automatic feeding machine 6 is arranged below the feeding conveying belt 5, receives the steel pipe short sections conveyed by the feeding conveying belt 5, and supplies the steel pipe short sections to the heating device 8.

Heating device 8 is intermediate frequency heating furnace, and it sets up in automatic feeding machine 6's below, heats the steel pipe nipple joint to the assigned temperature, forms the steel pipe nipple joint after the heating. The top of the heating device 8 is provided with a feeding channel 7. The steel pipe short section enters a heating device 8 through a feeding channel 7. The bottom of the heating device 8 is provided with a discharging channel 9. The discharging channel 9 is arched, and two ends of the discharging channel are respectively provided with a first discharging hole and a second discharging hole. And discharging the heated steel pipe short section from the first discharge port and the second discharge port.

First discharge gate and second discharge gate all are provided with temperature identification and autofilter system, can the steel pipe nipple joint of automatic identification appointed temperature and the steel pipe nipple joint of non-appointed temperature like this to reject the steel pipe nipple joint of non-appointed temperature, send the steel pipe nipple joint of appointed temperature into automatic conveying device.

The automatic transporter 400 includes a first automatic transporter 12 and a second automatic transporter 13. The ring rolling machine 500 includes a first ring rolling machine 10 and a second ring rolling machine 11. A first automatic conveying device 12 is arranged near the first discharge port, and is a mechanical arm for conveying the steel pipe short sections with specified temperature to the first ring rolling machine 10. The first ring rolling machine 10 rolls the short piece of steel pipe from the first automatic transport device 12 into a bearing ring blank preform. And a second automatic conveying device 13 which is a mechanical arm is arranged near the second discharge port and used for conveying the steel pipe short sections with the specified temperature to the second ring rolling machine 11. The second ring rolling machine 11 rolls the short steel pipe sections from the second automatic conveying device 13 into a bearing ring blank prefabricated product.

The automatic transfer device 600 includes an outfeed conveyor belt 700 and a conveyor belt 16. The outfeed conveyor belt 700 includes a first outfeed conveyor belt 14 and a second outfeed conveyor belt 15. The first ring rolling machine 10 is provided with a discharge port. A first outfeed conveyor belt 14 is arranged near the outfeed of the first ring rolling machine 10 and conveys the bearing ring blank pre-forms formed by the first ring rolling machine 10 to a conveyor belt 16. The second ring rolling machine 11 is provided with a discharge port. A second outfeed conveyor belt 15 is arranged in the vicinity of the outfeed of the second ring rolling machine 11 and conveys the bearing ring blank pre-forms formed by the second ring rolling machine 11 to a conveyor belt 16. The conveyor belt 16 is connected to the first discharge conveyor belt 14 and the second discharge conveyor belt 15, respectively.

The spray head of the spray cooling device 17 is arranged above the conveyor belt 16 to cool the bearing ring blank preform to form the bearing ring blank. A palletising collector 19 is provided at one end of the conveyor belt 16. A palletizing robot 18 is arranged above the conveyor belt 14 and close to the code collector 19. The bearing ring blank is transferred via a conveyor belt 16 to an area where it can be picked up by a palletizing robot 18 and transported by the palletizing robot 18 into a palletizing collector 19.

Example 3

A bearing ring blank was machined using the apparatus of example 2.

A hot-rolled thick-walled seamless steel pipe (73 mm in outer diameter and 8mm in wall thickness) made of GCr15 bearing steel was placed on the first automatic feeding table 1 and the second automatic feeding table 2, respectively, by a crane. The hot-rolled thick-wall seamless steel pipe is automatically close to one side of the material cutting part of the automatic cutting device. The hot-rolled thick-wall seamless steel pipe is respectively sent into the first automatic cutting device 3 and the second automatic cutting device 4 from the first automatic feeding rack 1 and the second automatic feeding rack 2, and is cut into a steel pipe short section through the first automatic cutting device 3 and the second automatic cutting device 4, and the length of the steel pipe short section is 23.52 mm.

The steel pipe short section is conveyed to an automatic feeding machine 6 through a feeding conveying belt 5. The automatic feeding machine 6 supplies the receiving steel pipe short section to the heating device 8 through the feeding channel 7. And controlling the preheating temperature of the heating device 8 to be 600-650 ℃ and the heating temperature to be 950-1000 ℃ to form the heated steel pipe short section. The heated steel pipe short sections are screened by a temperature identification and automatic screening system, the steel pipe short sections with the specified temperature (950-1000 ℃) are sent into a first automatic conveying device 12 through a first discharge port or sent into a second automatic conveying device 13 through a second discharge port, and the steel pipe short sections with the temperature of less than 950 ℃ or more than 1000 ℃ are removed.

The steel pipe short section with the specified temperature discharged from the first discharge port is conveyed to the first ring rolling machine 10 through the first automatic conveying device 12. The steel pipe short section with the specified temperature discharged from the second discharge port is conveyed to the second ring rolling machine 11 through the second automatic conveying device 13. The rolling ratio of the first ring rolling machine 10 and the second ring rolling machine 11 was set to 1.53, the end face elongation was 4%, and a bearing ring blank preform having an outer diameter of 91.3mm, a thickness of 8.8mm (including a channel) and a height of 24mm was obtained.

The bearing ring blank preform formed by the first ring rolling machine 10 is conveyed through the discharge port of the first ring rolling machine 10 to a first discharge conveyor 14, and the first discharge conveyor 14 conveys the bearing ring blank preform to a conveyor 16. The bearing ring blank prefabricated product formed by the second ring rolling machine 11 is conveyed to a second discharging conveyer belt 15 through a discharging port of the second ring rolling machine 11, and the bearing ring blank prefabricated product is conveyed to a conveyer belt 16 by the second discharging conveyer belt 15.

The bearing ring blank preform is cooled by a spray cooling device 17 to form a bearing ring blank. And controlling the spray cooling equipment to cool the bearing ring blank prefabricated product to 200 ℃ at the cooling speed of 55 ℃/h, and finishing cooling.

The bearing ring blank is transferred via a conveyor belt 16 to an area where it can be picked up by a palletizing robot 18 and transported by the palletizing robot 18 into a palletizing collector 19.

The bearing ring blank prepared in the embodiment is tested according to the GB T224-2008 standard, the depth of the decarburized layer is less than 0.1mm, and no net-shaped carbide is formed on the surface.

Comparative example 1

The spray cooling equipment is omitted, the temperature of the bearing ring blank prefabricated product is reduced at the cooling speed of 50 ℃/h by adopting the conventional cooling, and the rest conditions are the same as the conditions of the embodiment 1, so that the bearing ring blank is obtained. According to the test of GB T224-2008 standard, the depth of the decarburized layer is less than 0.1mm, and network carbide is formed on the surface.

Comparative example 2

And setting the specified temperature of the heated steel pipe nipple to 760-780 ℃, and obtaining a bearing ring blank under the same conditions as in the embodiment 1. According to the test of GB T224-2008 standard, the depth of the decarburized layer is less than 0.1mm, and network carbide is formed on the surface.

Comparative example 3

The bearing steel pipe is obtained by adopting the preparation method of the CN102267040B specific embodiment. According to the test of GB T224-2008 standard, the depth of the decarburized layer is less than 0.1mm, and network carbide is formed on the surface.

The present invention is not limited to the above embodiments, and any variations, modifications, and substitutions that may occur to those skilled in the art may be made without departing from the spirit of the present invention.

Claims (10)

1. An apparatus for manufacturing a bearing ring blank, comprising: the automatic ring rolling machine comprises an automatic cutting device, an automatic feeding device, a heating device, an automatic conveying device, a ring rolling machine and an automatic conveying device;

the automatic cutting device is used for cutting the hot-rolled thick-wall seamless steel pipe into a steel pipe short section;

the automatic feeding device is arranged below the automatic cutting device and is used for conveying the steel pipe short sections to the heating device;

the heating device is arranged below the automatic feeding device and used for heating the steel pipe short section to a specified temperature; a feeding channel is arranged at the top of the heating device, and the steel pipe short section enters the heating device through the feeding channel; a discharging channel is arranged at the bottom of the heating device, a discharging port is formed in the discharging channel, and the heated steel pipe short section is discharged from the discharging port;

the automatic conveying device is arranged near a discharge port of the discharge channel and is used for conveying the heated steel pipe short sections discharged from the discharge channel to the ring rolling machine;

the ring rolling machine is used for rolling the heated steel pipe short sections conveyed by the automatic conveying device into bearing ring blank prefabricated products;

the automatic conveying device is provided with a spray cooling device and is used for conveying the bearing ring blank prefabricated product into the cooling range of the spray cooling device; and the spray cooling equipment is used for cooling the bearing ring blank prefabricated product to obtain the bearing ring blank.

2. The apparatus of claim 1, wherein the automatic feed device comprises a feed conveyor belt and an automatic feeder;

the feeding conveyer belt is arranged below the automatic cutting device and used for conveying the steel pipe short sections to the automatic feeding machine;

the automatic feeding machine is arranged below the feeding conveying belt and used for receiving the steel pipe short sections conveyed by the feeding conveying belt and supplying the steel pipe short sections to the heating device.

3. The apparatus according to claim 2, wherein the discharge channel is provided with a first discharge opening and a second discharge opening; the automatic conveying devices comprise two groups, namely a first automatic conveying device and a second automatic conveying device; the ring rolling machines comprise two groups, namely a first ring rolling machine and a second ring rolling machine;

the first automatic conveying device is used for conveying the steel pipe short sections discharged from the first discharge hole to the first ring rolling machine;

the first ring rolling machine is used for rolling the steel pipe short sections conveyed by the first automatic conveying device into bearing ring blank prefabricated products;

the second automatic conveying device is used for conveying the steel pipe short sections discharged from the second discharge hole to the second ring rolling machine;

and the second ring rolling machine is used for rolling the steel pipe short sections conveyed by the second automatic conveying device into the bearing ring blank prefabricated product.

4. The apparatus of claim 3, wherein the discharge channel is arched, and the first discharge port and the second discharge port are respectively disposed at two ends of the discharge channel.

5. The apparatus according to claim 4, further comprising an automatic feeding stage provided above the automatic cutting device and inclined downward toward a side of a cutting portion of the automatic cutting device, for supplying the hot rolled thick-walled seamless steel pipe to the automatic cutting device.

6. The apparatus of claim 5, wherein the automatic feeding stage comprises a first automatic feeding stage and a second automatic feeding stage, and the automatic cutting device comprises a first automatic cutting device and a second automatic cutting device;

the first automatic feeding rack is arranged above the first automatic cutting device, is downwards inclined towards one side of a material cutting part of the first automatic cutting device and is used for supplying hot-rolled thick-walled seamless steel pipes to the first automatic cutting device;

the second automatic feeding rack is arranged above the second automatic cutting device, is downwards inclined towards one side of a material cutting part of the second automatic cutting device and is used for supplying hot-rolled thick-walled seamless steel pipes to the second automatic cutting device.

7. The apparatus of claim 6, further comprising a palletizing robot and a palletizing collector;

the stacking robot is used for transferring the bearing ring blank on the automatic conveying device to a stacking collector;

the stacking collector is used for collecting the bearing ring blank.

8. The apparatus of claim 7, wherein the automatic cutting device is a numerically controlled circular saw, the heating device is a medium frequency heating furnace, and the automatic conveying device is a robotic arm.

9. The apparatus of claim 8, wherein the automated conveyor comprises an outfeed conveyor belt and a conveyor belt, the spray head of the spray cooling apparatus being disposed above the conveyor belt;

the ring rolling machine is provided with a discharge port, and the discharge conveyer belt is arranged near the discharge port of the ring rolling machine and used for conveying the bearing ring blank prefabricated product to the conveyer belt;

the conveyor belt is connected with the discharge conveyor belt, and the bearing ring blank prefabricated product is cooled on the conveyor belt by spray cooling equipment to form the bearing ring blank.

10. The apparatus of claim 9, wherein the automated conveyance device comprises a first outfeed conveyor belt, a second outfeed conveyor belt, and a conveyor belt; the stacking collector is arranged at one end of the conveyor belt, and a spray head of the spray cooling equipment is arranged above the conveyor belt;

the first ring rolling machine is provided with a discharge port, and the first discharge conveyer belt is arranged near the discharge port of the first ring rolling machine and used for conveying the bearing ring blank prefabricated product formed by the first ring rolling machine to the conveyer belt;

the second ring rolling machine is provided with a discharge hole, and the second discharge conveyer belt is arranged near the discharge hole of the second ring rolling machine and used for conveying the bearing ring blank prefabricated product formed by the second ring rolling machine to the conveyer belt;

the conveyer belt is respectively connected with the first discharging conveyer belt and the second discharging conveyer belt, the bearing ring blank prefabricated product is cooled on the conveyer belt by spray cooling equipment to form a bearing ring blank, and the bearing ring blank is conveyed to an area capable of being picked up by a stacking robot through the conveyer belt and transferred to a stacking collector through the stacking robot.

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