CN218983024U - A tube material cold rolling bearing ring device - Google Patents

Abstract

The utility model discloses a tube material cold rolling bearing ring device, which comprises a pressurizing unit, a grating ruler, a driving roller bearing seat, a cold rolling roller, a cold rolling roller bearing seat, a driving roller, a power source and two racks; The driving roll is horizontally arranged on the two frames through the driving roller bearing seat and connected to the power source; the cold rolling roller is horizontally arranged on the two frames through the cold rolling roller bearing seat and is located above the driving roller, and Parallel to each other; the cold rolling roll bearing housings at both ends of the cold rolling roll are respectively connected to a pressure unit, and the pressure unit pushes the cold rolling roll bearing housing to move down to drive the cold rolling roll down to complete the cold rolling of the raceway; the grating ruler is installed in it On a frame, it is used to measure the height of the cold rolling roll and the gap between the cold rolling roll and the driving roll, and adjust the gap between the cold rolling roll and the driving roll through the pressure unit to adapt to different thicknesses of seamless Steel Pipe. The utility model can effectively improve the production efficiency and reduce the work intensity and production cost of workers.

Description

A tube material cold rolling bearing ring device

technical field

The utility model relates to the technical field of bearing production, in particular to a tube material cold rolling bearing ring device.

Background technique

Bearings are an indispensable part of mechanical equipment, and their main purpose is to support the rotating body and reduce the friction coefficient during its rotation, so as to achieve the purpose of ensuring high rotation accuracy and rotation speed. There are many kinds of bearings, which are widely used in important fields such as automobiles, railway vehicles, various industrial machinery and household appliances.

Previously, the production of bearing rings mostly used the forging process, but the material utilization rate was low and the production process was lengthy. At present, in the processing of small and medium-sized bearing rings in large quantities, the forging process is replaced by turning seamless bearing steel pipes, the flat forging/forging-rolling-shaping process is used in the processing of medium batches, and the hammer forging is used in the processing of small batches- Rolling process.

At present, the process of using seamless steel pipes to process bearing rings is mostly turning. Turning steel pipes inevitably wastes the thickness of the turning tool and the fixed part of the three-jaw or four-jaw chuck, resulting in a reduction in material utilization, and turning has high technical requirements for workers. , The labor intensity of the workers is high.

Rolling is a processing method with almost no loss. At present, heating cross-rolling slitting bearing steel pipe is the main form of rolling bearing steel pipe, but it requires high equipment and high heating temperature. Usually, the heating temperature needs to reach above 1100°C and the heating time is long. Usually the heating and holding time is more than 5 hours, which consumes a lot of energy. Cross-rolling and slitting require pre-piercing. The increase in the process increases labor costs, reduces production efficiency, and heating will destroy the complete metal streamline formed after rolling. The improvement of the performance of the finished product is small. With the popularization of the process of producing seamless steel pipes by cold drawing and annealing, cold rolling bearing steel pipes become feasible.

Utility model content

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, and propose a tube material cold-rolled bearing ring device with simple and reliable structure and convenient operation, which can effectively improve production efficiency, reduce labor intensity and production cost.

In order to achieve the above purpose, the technical solution provided by the utility model is: a tube material cold rolling bearing ring device, including a pressure unit, a grating scale, a driving roller bearing seat, a cold rolling roller, a cold rolling roller bearing seat, a driving Roller, power source and two frames; The drive roller is horizontally arranged on the two frames through the drive roller bearing seats at both ends, and is connected with the power source, and is powered by the power source to make it rotate; The cold rolling roll is horizontally arranged on the two frames through the cold rolling roll chocks at both ends, and is located above the driving roll, parallel to the driving roll; the cold rolling roll chocks at both ends of the cold rolling roll are respectively connected to a Pressing unit, and a frame is equipped with a pressing unit, the pressing unit pushes the bearing seat of the cold rolling roll to move down to drive the cold rolling roll to press down to complete the cold rolling of the raceway; the grating ruler is installed on one of the machine On the frame, it is used to measure the height of the cold rolling roll and the gap between the cold rolling roll and the driving roll, and adjust the gap between the cold rolling roll and the driving roll through the pressure unit to adapt to seamless steel pipes of different thicknesses. The seamless steel pipe is set on the driving roller.

Further, the cold rolling roll is assembled by a cold rolling ring and a core roll, and the cold rolling ring is set on the core roll for processing a raceway on the surface of the seamless steel pipe, and the surface of the core roll is equally spaced with The threaded hole is connected with the cold rolling ring by bolts.

Further, the pressurizing unit is a screw stepping motor, the screw of the screw stepping motor is fixed on the corresponding frame, and its external drive motor is connected with the bearing seat of the cold rolling roll, and the external drive motor is pushed to move downward by the rotation of the screw , thus pushing the cold roll down.

Further, the pressurizing unit is a hydraulic cylinder, and the cylinder body of the hydraulic cylinder is fixed on the corresponding frame, and its hydraulic rod is connected with the bearing seat of the cold rolling roll, and the hydraulic pressure pushes the piston to drive the hydraulic rod to press down, thereby pushing the cold rolling roll Roll down.

Further, the pressurizing unit is a jack, the base of which is fixed on the bearing seat of the cold rolling roll, and its supporting rod bears against the corresponding frame, and the supporting rod is lifted by twisting the pressing rod of the jack, thereby pushing the cold rolling roll push down.

Further, the power source includes a reducer and a servo motor equipped with a frequency converter, the driving roller is connected to the reducer through a key coupling, and the reducer is connected to the servo motor; two The supporting nuts of the screw rods are tightly connected together; the driving roller bearing housing and the cold rolling roller bearing housing both adopt sliding bearings, and the sliding bearings, the driving roller bearing housing and the cold rolling roller bearing housing adopt thermal charging, and the sliding bearings and A gap fit is used between the cold rolling roll and the driving roll.

Further, the tube material cold-rolled bearing ring device also includes a stepping motor and a guide rail, the power source is located outside one of the racks, and this rack is defined as the first rack, and the other rack is slidably installed on the guide rail , defining the frame as the second frame, the stepper motor is connected to the second frame through a screw, the screw passes through the bottom of the second frame and is locked with a nut, and the second frame can step Driven by the motor, it moves along the guide rail, thereby opening the distance between it and the first frame to perform the operation of replacing the cold rolling roll.

Further, the tube material cold-rolled bearing ring device also includes a hydraulic cylinder and a guide rail, the power source is located outside one of the racks, and this rack is defined as the first rack, and the other rack is slidably installed on the guide rail, The frame is defined as the second frame, the hydraulic cylinder is connected to the second frame through a hydraulic rod, and the second frame can move along the guide rail under the drive of the hydraulic cylinder, thereby pulling apart the distance between it and the first frame. The distance between them is used to replace the cold rolling roll operation.

Further, the tube material cold-rolled bearing ring device also includes an auxiliary clamping mechanism, the auxiliary clamping mechanism is composed of upper and lower parts and a shell, and the upper part is composed of a telescopic rod matched with four hinge rods , one end of the telescopic rod is fixed on the housing, and the other end is a free end, two hinge rods are hinged symmetrically on both sides of the free end, and the two hinge rods are respectively hinged to a hinge rod fixed on the housing , by pulling out the telescopic rod, it can drive four hinge rods to support the cold roll bearing seat on one of the frames, defining this frame as the second frame, and the lower part is composed of five gears and four worm gear mechanisms , the five gears are composed of a driving gear and four driven gears, the driving gear is equipped with a handle, the four driven gears are distributed around the driving gear, and meshed with it, and a driven gear is paired with a worm gear mechanism , the driven gear coaxially fixes the worm wheel of the corresponding worm gear and worm mechanism, and can drive the worm gear to rotate through the coupling, thereby driving the worm of the corresponding worm gear and worm mechanism to move. The worm is fastened on the drive roller bearing seat through a nut, so that Drive the bearing seat of the driving roller to withdraw from the second frame to replace the seamless steel pipe.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

The utility model adopts annealed and cold-drawn seamless steel pipe as the raw material, which has high utilization rate compared with forging materials, high production efficiency, energy saving and environmental protection, compared with hot-rolled slitting and perforation blank pipe, cold rolling saves energy, and at the same time, due to cold working The hardening effect strengthens the surface of the raceway, improves the surface hardness, and will not destroy the good metal flow lines formed by rolling due to heating, which greatly improves the performance of the finished product.

The device designed by the utility model has the advantages of simple and reliable structure, low cost, convenient assembly, simple operation, good rigidity of the whole machine, and can meet the processing of various small and medium-sized bearing rings with different diameters.

The device designed by the utility model can process the whole pipe material in one clamping, and put it into the ring rolling machine for processing without cutting, which reduces the work intensity and production cost of workers, and greatly improves the production efficiency.

The device designed by the utility model has high tolerance precision of parts obtained after processing, and small unevenness of ring wall thickness, which meets the precision requirements of ordinary bearings, and can easily and quickly process small and medium-sized bearing rings.

Description of drawings

Fig. 1 is a structural schematic diagram of a tube material cold rolling bearing ring device in embodiment 1.

FIG. 2 is a schematic diagram of the installation of the pressurizing unit in Embodiment 1.

Fig. 3 is a schematic structural view of the cold rolling roll in Example 1.

Fig. 4a is one of the installation schematic diagrams of the stepping motor, the guide rail and the second frame in the first embodiment.

Fig. 4b is the second schematic diagram of the installation of the stepping motor, the guide rail and the second rack in the first embodiment.

FIG. 5 is a schematic structural view of the auxiliary clamping mechanism in Embodiment 1. FIG.

FIG. 6 is a cross-sectional view along line A-A of FIG. 5 .

FIG. 7 is a schematic diagram of the installation of the pressurizing unit in Embodiment 2.

FIG. 8 is a schematic diagram of the installation of the pressurizing unit in Embodiment 3.

Fig. 9a is one of the installation schematic diagrams of the hydraulic cylinder, the guide rail and the second frame in Embodiment 4.

Fig. 9b is the second schematic diagram of the installation of the hydraulic cylinder, the guide rail and the second frame in the fourth embodiment.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example 1

As shown in Figures 1 to 6, this embodiment discloses a tube material cold rolling bearing ring device, including a pressurizing unit 1, a grating ruler 3, an auxiliary clamping mechanism 4, a driving roller bearing seat 5, and a stepping motor 6. Cold rolling roll, guide rail 8 cold rolling roll bearing housing 10, driving roll 13, power source and two frames 14; and be connected with the power source, which is powered by the power source to make it rotate; the power source is located outside one of the frames 14 (defining the frame as the first frame); the cold rolling roll passes through its two The cold rolling roll chocks 10 at the end of the cold rolling roll are horizontally arranged on the two frames 14, and are located above the driving roll 13, and are parallel to the driving roll 13; the cold rolling roll chocks 10 at both ends of the cold rolling roll are respectively connected to a pressure Unit 1, and a frame 14 is equipped with a pressing unit 1, and the pressing unit 1 pushes the cold rolling roll bearing seat 10 to move downward to drive the cold rolling roll to press down to complete the cold rolling of the raceway; the grating ruler 3 Installed on one of the frames 14 (defining the frame as the second frame), it is used to measure the height of the cold rolling roll and the gap value between the cold rolling roll and the driving roll 13, and adjust the cooling by the pressing unit 1. The gap between the rolling roller and the driving roller 13 is to adapt to the seamless steel pipe 11 of different thickness, and the seamless steel pipe 11 is set on the driving roller 13; the two frames 14 are fastened and connected by two screw supporting nuts Together, the stability is increased; the second frame is slidably installed on the guide rail 8, and the stepper motor 6 is connected to the second frame through a screw rod 7, and the screw rod 7 passes through the bottom of the second frame and is connected with a nut Locking, the second frame can move along the guide rail 8 under the drive of the stepper motor 6, so as to open the distance between it and the first frame to perform the operation of replacing the cold roll; the auxiliary clamping mechanism 4 It consists of upper and lower parts and a shell 21. The upper part is composed of a telescopic rod 22 and four hinge rods 28. One end of the telescopic rod 22 is fixed on the shell 21, and the other end is a free end. Two hinge rods 28 are hinged symmetrically on both sides of the free end, and the two hinge rods 28 are respectively hinged to a hinge rod 28 fixed on the housing 21, and four hinge rods 28 can be driven to support by pulling out the telescopic rod 22. Hold the cold roll bearing housing 10 on one of the frames 14, define the frame as the second frame, and the lower part is made up of five gears supporting four worm gear mechanisms, and the five gears are composed of a driving gear 23 and four The driving gear 23 is composed of two driven gears 24, the driving gear 23 is equipped with a handle, the four driven gears 24 are distributed around the driving gear 23, and are meshed with it for transmission, one driven gear 24 is paired with a worm gear mechanism, and the driven gear 24 coaxially fixes the worm gear 26 of the corresponding worm gear mechanism, and can drive the worm gear 26 to rotate through the shaft coupling, thereby driving the worm 25 of the corresponding worm gear mechanism to move. Drive the driving roller bearing seat 5 to withdraw from the second frame to replace the seamless steel pipe 11 operation.

Preferably, the cold rolling roll is assembled by a cold rolling ring 9 and a core roll 2, and the cold rolling ring 9 is set on the core roll 2 for processing a raceway on the surface of the seamless steel pipe 11. The core The surface of the roller 2 is equidistantly provided with threaded holes, which are connected and fixed with the cold rolling ring 9 using m6 bolts 17 .

Preferably, the pressurizing unit 1 is a screw stepping motor (see reference numeral 18 shown in FIG. 2 ), the screw of the screw stepping motor 18 is fixed on the corresponding frame 14, and its external drive motor and cooling The roll bearing housings 10 are connected to each other, and the external drive motor is driven to move downward through the rotation of the screw, thereby pushing the cold rolling roll to press down.

Preferably, the power source includes a reducer 15 and a servo motor 16 equipped with a frequency converter 27 , the driving roller 13 is connected to the reducer 15 through a key coupling 12 , and the reducer 15 is connected to the servo motor 16 .

Preferably, the drive roll bearing housing 5 and the cold rolling roll bearing housing 10 both adopt sliding bearings, and the sliding bearings and the driving roll bearing housing 5 and the cold rolling roll bearing housing 10 adopt thermal loading, and the sliding bearings and the cold rolling bearing housing 10 adopt thermal loading. A gap fit is adopted between the roller and the drive roller 13, which not only ensures the axis alignment but also facilitates disassembly.

Example 2

The difference from Embodiment 1 is that the pressurizing unit 1 described in this embodiment is a hydraulic cylinder (see reference numeral 19 shown in FIG. 7 ), the cylinder body of the hydraulic cylinder 19 is fixed on the corresponding frame 14, and its The hydraulic rod is connected with the bearing seat 10 of the cold rolling roll, and the piston is driven by hydraulic pressure to push down the hydraulic rod, thereby pushing the cold rolling roll down.

Example 3

The difference from Embodiment 1 is that the pressurizing unit 1 described in this embodiment is a jack (see reference numeral 20 shown in FIG. 8 ), the base of the jack is fixed on the cold rolling roll bearing seat 10, and its support rod Withstand the corresponding frame 14, and make the support rod rise by twisting the pressure rod of the jack, thereby pushing the cold rolling roller to press down.

Example 4

The difference from Embodiment 1 is that this embodiment uses a hydraulic cylinder 29 to pull the second frame to move on the slide rail 8, as shown in Figures 9a and 9b, the hydraulic cylinder 29 is connected to the second frame through a hydraulic rod 30, The second frame can move along the guide rail 8 under the drive of the hydraulic cylinder 29, so as to increase the distance between it and the first frame to perform the operation of replacing the cold rolling roll.

Below is the processing method of the tube material cold-rolled bearing ring device described in any one of embodiments 1-4, and its specific circumstances are as follows:

First, use a lathe to remove the oxide layer on the surface of the annealed and cold-drawn seamless steel pipe 11, and then insert the seamless steel pipe 11 onto the driving roller 13; then start the power source to rotate the driving roller 13, thereby driving the seamless steel pipe 11 and The cold rolling roll rotates, and then the pressing unit 1 is started to press the cold rolling roll down, and the cold rolling ring 9 processes a raceway on the surface of the seamless steel pipe 11; then the pressing unit 1 resets, driving the cold rolling roll to reset, repeating the above process , can process multiple bearing rings under one clamping, cut to obtain semi-finished bearing rings, deburr and clean the semi-finished products, and perform subsequent heat treatment or diameter adjustment according to requirements to obtain qualified finished bearing rings;

If it is necessary to process bearing rings of different diameters, it is necessary to replace cold rolling rolls of different sizes, and according to the working environment of different loads, choose to change the rolls driven by the stepping motor 6 or the hydraulic cylinder 29; when changing the rolls under low load conditions, The distance between the second frame and the first frame is opened by the stepping motor 6. After the cold rolling roll is separated from the cold rolling roll bearing seat 10, the original cold rolling roll is taken out and a new cold rolling roll is replaced. Then the second frame is reset by the stepping motor 6, and after the new cold rolling roll is loaded into the cold rolling roll bearing seat 10, the stepping motor 6 is stopped, the second frame is fixed, and the roll changing operation is completed; When changing rolls under high load conditions, the distance between the second frame and the first frame is opened by the hydraulic cylinder 29. After the cold rolling roll is separated from the cold rolling roll bearing seat 10, the original cold rolling roll is taken out and replaced. Install the new cold rolling roll, and then reset the second frame through the hydraulic cylinder 29. After the new cold rolling roll is installed in the cold rolling roll bearing seat 10, stop the hydraulic cylinder 29, fix the second frame, and complete the process. Roll changing operation;

If a seamless steel pipe 11 is processed, a new seamless steel pipe 11 needs to be replaced for processing. At first, the telescopic rod 22 is pulled out to drive four hinge rods 28 to form a support to support the cold rolling roller bearing housing 10, and then rotate The handle on the driving gear 23 drives the driving gear 23 to rotate, and the four driven gears 24 are coupled to drive the worm gear 26 to rotate, thereby driving the worm 25 to move, and then the worm 25 drives the drive roller bearing seat 5 to pull away from the second frame, and take out The processed seamless steel pipe 11 is then loaded into the driving roller 13 with the seamless steel pipe to be processed, at last, the handle on the driving gear 23 is reversely rotated, and the driving roller bearing seat 5 is put back into the second frame to complete the replacement. Seamless steel pipe operation.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (10)

1. A cold rolling bearing ring device of tube stock, its characterized in that: comprises a pressurizing unit (1), a grating ruler (3), a driving roller bearing seat (5), a cold rolling roller bearing seat (10), a driving roller (13), a power source and two frames (14); the driving roller (13) is transversely arranged on the two frames (14) through driving roller bearing seats (5) at two ends of the driving roller and is connected with a power source, and the power source provides power to rotate the driving roller; the cold rolling rollers are transversely arranged on the two frames (14) through cold rolling roller bearing blocks (10) at two ends of the cold rolling rollers and are positioned above the driving rollers (13) and are parallel to the driving rollers (13); the cold rolling roller bearing seats (10) at two ends of the cold rolling roller are respectively connected with a pressurizing unit (1), and a frame (14) is matched with the pressurizing unit (1), and the pressurizing unit (1) pushes the cold rolling roller bearing seats (10) to move downwards to drive the cold rolling roller to press downwards to finish rollaway cold rolling; the grating ruler (3) is arranged on one of the frames (14) and used for measuring the height of the cold rolling roller and the gap value between the cold rolling roller and the driving roller (13), and the gap between the cold rolling roller and the driving roller (13) is adjusted through the pressurizing unit (1) so as to adapt to seamless steel pipes (11) with different thicknesses, and the seamless steel pipes (11) are sleeved on the driving roller (13).

2. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the cold rolling roller is formed by assembling a cold rolling ring (9) and a core roller (2), the cold rolling ring (9) is sleeved on the core roller (2) and is used for machining a roller path on the surface of a seamless steel tube (11), threaded holes are formed in the surface of the core roller (2) at equal intervals, and the threaded holes are fixedly connected with the cold rolling ring (9) through bolts (17).

3. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the pressurizing unit (1) is a screw stepping motor, a screw of the screw stepping motor is fixed on a corresponding frame (14), and an external motor of the screw stepping motor is connected with the cold rolling roller bearing seat (10).

4. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the pressurizing unit (1) is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixed on a corresponding frame (14), and a hydraulic rod of the hydraulic cylinder is connected with the cold rolling roller bearing seat (10).

5. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the pressurizing unit (1) is a jack, the base of the jack is fixed on the cold rolling roller bearing seat (10), and the supporting rod of the jack props against the corresponding frame (14).

6. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the power source comprises a speed reducer (15) and a servo motor (16) provided with a frequency converter (27), the driving roller (13) is connected with the speed reducer (15) through a key coupler (12), and the speed reducer (15) is connected with the servo motor (16).

7. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: two screw matched nuts are adopted to fasten and connect the two frames (14) together; the hot rolling device is characterized in that the driving roller bearing seat (5) and the cold rolling roller bearing seat (10) are both provided with sliding bearings, the driving roller bearing seat (5) and the cold rolling roller bearing seat (10) are hot-packed, and the sliding bearings, the cold rolling roller and the driving roller (13) are in clearance fit.

8. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: still include step motor (6) and guide rail (8), the power supply is located one of them frame (14) outside, defines this frame to be first frame, and another frame (14) slidable mounting is on guide rail (8), defines this frame to be the second frame, step motor (6) are connected the second frame through lead screw (7), lead screw (7) pass second frame bottom and lock with the nut, the second frame can be moved along guide rail (8) under step motor (6) drive to pull open the distance between its and the first frame.

9. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: still include pneumatic cylinder (29) and guide rail (8), the power supply is located one of them frame (14) outside, defines this frame to be first frame, and another frame (14) slidable mounting is on guide rail (8), defines this frame to be the second frame, pneumatic cylinder (29) are connected the second frame through the hydraulic stem, the second frame can be moved along guide rail (8) under the drive of pneumatic cylinder (29) to pull open the distance between its and the first frame.

10. A tube stock cold rolling bearing ring apparatus according to claim 1, characterized in that: the auxiliary clamping mechanism (4) is composed of an upper part, a lower part and a shell (21), the upper part is composed of four hinge rods (28) matched with a telescopic rod (22), one end of the telescopic rod (22) is fixed on the shell (21), the other end of the telescopic rod is a free end, two hinge rods (28) are symmetrically hinged to two sides of the free end, the two hinge rods (28) are respectively hinged to a hinge rod (28) fixed on the shell (21), the telescopic rod (22) is pulled out to drive the four hinge rods (28) to support a cold rolling roller bearing seat (10) on one of the frames (14), the frame is defined as a second frame, the lower part is composed of four worm and gear mechanisms matched with five gears, the five gears are composed of a driving gear (23) and four driven gears (24), handles are arranged on the driving gear (23), the four driven gears (24) are distributed around the driving gear (23) and meshed with the driving gear, one worm wheel (24) drives a worm wheel and a worm wheel (24) to drive a corresponding worm (26) to drive a worm (25) to rotate, so that the worm (26) can be fastened on a corresponding worm and a corresponding worm (25) and a worm (25) to be fastened and a corresponding worm (25) to move, thereby driving the driving roller bearing seat (5) to be pulled away from the second frame.

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