CN103495927A - Device for spiral superfinishing of raceway of bearing inner race - Google Patents

Abstract

The invention relates to a spiral ultra-finishing device for bearing inner ring raceways. The output end of the swing shaft of the space connecting rod oscillating oscillator is fixedly connected to a spline sleeve, and the inside of the spline sleeve is slidably connected to a spline shaft matched with the spline sleeve. The front end of the key shaft is fixedly connected to the oil stone swing head, and the oil stone swing head and the spline sleeve are connected by a tension spring. There is a push rod inside the swing shaft, and the front end of the push rod passes through the swing shaft. The rear end of the penetrating shaft is connected with a propelling device with adjustable stroke and speed. By adjusting the swing angle of the swing shaft and the eccentricity of the eccentric cam or the movement of the electric push rod, the helix angle and pitch of the helical motion can be changed. By adjusting the speed of the speed-regulating motor of the space link oscillating oscillator and the speed-regulating motor driving device of the push device with adjustable stroke and speed or the driving speed of the electric push rod, the speed and oscillation frequency of the spiral motion can be changed, and the difference can be improved. The surface roughness of the raceway of the inner ring of the bearing is super-finished to reduce waviness.

Description

Bearing inner ring raceway spiral superfinishing processing device

technical field

The invention relates to a superfinishing device for raceway of a bearing inner ring, in particular to a device for superfinishing in a spiral manner.

Background technique

The way of spiral superfinishing, as shown in Figure 1, the inner ring of the bearing is fixed on the main shaft of the spiral superfinishing machine, and rotates together with the main shaft. Perform ultra-finishing. Among them, one whetstone performs spiral motion (oscillating angular velocity ω, linear motion velocity ν synthesis), the whetstone pressure Ρ, and the other whetstone performs oscillating motion (oscillating angular velocity ω).

The existing spiral superfinishing device adopts a fixed-ratio transmission mode. The movement mechanisms of the coarse and fine super-polishing stones are driven by the same motor and V-belt transmission device. The ring raceway is subjected to spiral motion type rough and super-finishing, and the driving end face cam drives the fine super-finishing oilstone to perform swing fine and super-finishing on the inner ring raceway of the bearing. The fixed-ratio transmission screw mechanism has a simple structure and is suitable for ultra-finishing of raceways of inner rings of bearings with a single model and specification in large quantities. However, it is not suitable for the ultra-finishing of raceways of inner rings of bearings in small batches and with multiple specifications where the pitch and swing of the spiral motion need to be adjusted frequently. Therefore, there is a need for a bearing inner ring raceway spiral superfinishing device that can adjust the pitch, swing amplitude and oscillation frequency of the coarse super oil stone spiral motion according to the superfinishing requirements of the bearing inner ring raceway.

Contents of the invention

The present invention is to provide a bearing inner ring raceway spiral superfinishing processing device, which can conveniently adjust the pitch, swing amplitude and oscillation frequency of the coarse super oil stone spiral movement according to the superfinishing requirements of different bearing inner raceway superfinishing , can improve the super-finishing surface roughness of different bearing inner raceways and reduce waviness.

In order to achieve the above object, the technical solution of the present invention is: a bearing inner ring raceway spiral superfinishing processing device, including a space connecting rod oscillating oscillator, an oilstone oscillating head, and the output end of the oscillating shaft of the spatial connecting rod oscillating oscillator is fixed Connect the spline sleeve, the spline sleeve is slidingly connected with the spline shaft matching the spline sleeve, the front end of the spline shaft is fixedly connected to the oil stone swing head, the oil stone swing head and the spline sleeve are connected by a tension spring, and the swing shaft is worn with A push rod, the front end of the push rod passes through the front end of the swing shaft and is in contact with the spline shaft, and the rear end of the push rod passes through the rear end of the swing shaft and is connected with a push device with adjustable stroke and speed.

The pushing device with adjustable stroke and speed is an electric push rod, and the electric push rod is fixedly connected with the push rod.

The driving device with adjustable stroke and speed is composed of an eccentric cam and a speed-regulating motor driving device. There is a long waist groove on the eccentric cam, and the eccentric cam is connected with the output shaft of the speed-regulating motor driving device through the long waist groove. , the outer peripheral surface of the eccentric cam is in contact with the push rod.

The swing shaft is connected with the push rod in clearance fit.

The space link oscillating oscillator includes a speed-regulating motor, an input shaft, a first connecting rod, a second connecting rod, and a swing shaft. The speed-regulating motor is connected to the input shaft, and the input shaft is movably connected to the first connecting rod. The head joint bearing is connected with the second connecting rod, and the second connecting rod is movably connected with the swing shaft.

The beneficial effects of the present invention are: by adjusting the swing angle of the swing shaft of the space link oscillating oscillator and the eccentricity of the eccentric cam or the movement of the electric push rod, the helix angle and pitch of the helical motion can be changed. By adjusting the speed of the speed-regulating motor of the space link oscillating oscillator and the speed-regulating motor driving device of the push device with adjustable stroke and speed or the driving speed of the electric push rod, the speed and oscillation frequency of the spiral motion can be changed, and the difference can be improved. The surface roughness of the raceway of the inner ring of the bearing is super-finished to reduce waviness.

Description of drawings

Fig. 1 is the schematic diagram of the mode of spiral superfinishing;

Fig. 2 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention;

Fig. 4 is a schematic diagram of the structure of the space link oscillating oscillator.

Detailed ways

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

As shown in Figures 2 and 3, the bearing inner ring raceway spiral superfinishing processing device of the present invention includes a space connecting rod oscillating oscillator 9, a spline sleeve 10, an oilstone oscillating head 11, a spline shaft 12, and a tension spring 13 , Push rod 14, the driving device of adjustable stroke and speed.

The output end of the swing shaft 1 of the space connecting rod oscillating oscillator 9 is fixedly connected to the spline sleeve 10, the inside of the spline sleeve 10 is slidably connected to the spline shaft 12 matched with the spline sleeve 10, and the front end of the spline shaft 12 is fixedly connected to the oilstone swing head 11 , the oilstone swing head 11 and the spline sleeve 19 are connected by a tension spring 13, a push rod 14 is worn inside the swing shaft 1, and the front end of the push rod 14 passes through the front end of the swing shaft 1 and is in contact with the spline shaft 12, and the swing shaft 1 is connected with the spline shaft 12. The push rod 14 is connected with a clearance fit, and the rear end of the push rod 14 passes through the rear end of the swing shaft 1 to be connected with a driving device with adjustable stroke and speed.

As shown in Figure 2, the driving device with adjustable stroke and speed is composed of an eccentric cam 15 and a speed-regulating motor drive device. The eccentric cam 15 has a long waist groove, and the eccentric cam 15 connects with the speed-regulating motor through the long waist groove on it. The output shaft 16 of the driving device is connected with adjustable eccentricity, and the outer peripheral surface of the eccentric cam 15 is connected with the push rod 14 in contact.

As shown in FIG. 3 , the pushing device with adjustable stroke and speed is an electric push rod 17 , and the electric push rod 17 is fixedly connected with the push rod 14 .

As shown in Figure 4, the space link oscillating oscillator includes a speed regulating motor 5, an input shaft 4, a first connecting rod 2, a second connecting rod 3, and a swing shaft 1, and the speed regulating motor 5 is connected to the input shaft 4 through a belt 6, The input shaft 4 is movably connected with the first connecting rod 2 , the first connecting rod 2 is connected with the second connecting rod 3 through a ball joint bearing to form a space linkage mechanism, and the second connecting rod 3 is movably connected with the swing shaft 1 .

The speed-regulating motor 5 drives the input shaft 4 through the belt 6, and the input shaft 4 drives the first connecting rod 2 to rotate in space, and drives the second connecting rod 3 through the spherical joint bearing to drive the swing shaft 1 to perform swinging and oscillating motion. The swing angle of the swing shaft 1 is realized by adjusting the front and rear positions of the input shaft 4 . Because the two connecting rods of the space linkage mechanism are connected by ball joint bearings, the motion track is similar to two conjoined space cones, which can greatly improve the sudden change of inertia caused by the sudden change of acceleration. Therefore, the oscillation frequency can be increased. Compared with the conventional eccentric link oscillating and oscillating mechanism, the spatial link oscillating oscillator: the oscillating frequency can reach 300-1000 times/min, the vibration is small, the noise is low, the service life is long, the mechanical efficiency is high, and it can be adjusted arbitrarily under dynamic conditions amplitude and frequency.

The space connecting rod oscillating oscillator 9 produces a rocking and oscillating motion, the spline sleeve 10 drives the spline shaft 12 and the oilstone swing head 11 to swing together, and the electric push rod 17 or the eccentric cam 15 drives the push rod `4 to push the spline shaft 12 on the spline The sleeve 10 moves in the middle, swings and moves to form a spiral motion, so that the oil stone 8 performs super-finishing on the raceway of the inner ring 7 of the bearing with a spiral track. Adjust the swing angle of the swing shaft 1 of the space link oscillating oscillator 9 and the eccentricity of the eccentric cam 15 or the displacement of the electric push rod 17 to change the helix angle and the pitch of the helical motion. Regulating the speed of the speed-regulating motor 5 of the space link oscillating oscillator 9 and the speed-regulating motor drive of the propelling device of adjustable stroke and speed or the driving speed of the electric push rod 17, the speed and the oscillation frequency of the spiral motion can be changed.

Claims (5)

1. a bearing inner race raceway Lapping Boll grinds processing unit (plant), comprise space connecting-rod vibration wig-wag (9), oilstone swinging head (11), it is characterized in that: swinging axle (1) output of described space connecting-rod vibration wig-wag (9) is fixedly connected with spline housing (10), the splined shaft (12) that is slidably connected in spline housing (10) and matches with spline housing (10), splined shaft (12) front end is fixedly connected with oilstone swinging head (11), between oilstone swinging head (11) and spline housing (10), by extension spring (13), be connected, be installed with push rod (14) in swinging axle (1), push rod (14) front end passes swinging axle (1) front end and is connected with splined shaft (12) contact, push rod (14) rear end passes swinging axle (1) rear end and is connected with the thrust unit of range-adjustable and speed.

2. bearing inner race raceway Lapping Boll according to claim 1 grinds processing unit (plant), it is characterized in that: the thrust unit of described range-adjustable and speed is electric pushrod (17), and electric pushrod (17) is fixedly connected with push rod (14).

3. bearing inner race raceway Lapping Boll according to claim 1 grinds processing unit (plant), it is characterized in that: the thrust unit of described range-adjustable and speed is comprised of eccentric cam (15), buncher drive unit, eccentric cam has long gain on (15), eccentric cam (15) is connected with output shaft (16) the adjustable eccentric amount of buncher drive unit by the long gain on it, and eccentric cam (15) outer peripheral face is connected with push rod (14) contact.

4. bearing inner race raceway Lapping Boll according to claim 1 grinds processing unit (plant), it is characterized in that: described swinging axle (1) is connected with push rod (14) matched in clearance.

5. bearing inner race raceway Lapping Boll according to claim 1 grinds processing unit (plant), it is characterized in that: described space connecting-rod vibration wig-wag (9) comprises buncher (5), power shaft (4), first connecting rod (2), second connecting rod (3), swinging axle (1), buncher (5) connects power shaft (4), power shaft (4) is flexibly connected with first connecting rod (2), first connecting rod (2) connects second connecting rod (3) by the bulb joint bearing, and second connecting rod (3) is flexibly connected swinging axle (1).

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