Axle journal polishing device and superfinishing machine equipped with the same
By designing a journal polishing device including abrasive belt, abrasive belt drive wheel and a damping pressure wheel, the problem of insufficient journal processing accuracy in the prior art is solved, and higher machining accuracy and convenient maintenance are achieved, which is suitable for machine tools. Interior installation.
Patent Information
- Application Number
- CN201811394374.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-11-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2038-11-21
AI Technical Summary
The existing super-precision machines are difficult to meet the increasingly high accuracy requirements in journal processing, which makes it difficult to reduce the surface roughness of the journal.
A journal polishing device is designed, including a main frame, abrasive belt, abrasive belt tray, abrasive belt drive wheel, a damping pressure wheel, a first drive motor and a second drive motor, and the belt drive wheel is driven to rotate through the first drive motor. Drives the belt to move on the damping pressure wheel, the second drive motor drives the belt tray to rotate in reverse, and can be equipped with an oscillation unit and a movable base to improve processing accuracy and position adjustment convenience.
It significantly improves the machining accuracy of the journal surface, reduces the roughness of the journal surface, and is designed with structural simplification and standard parts, which is easy to install and maintain, and is suitable for internal use of the machine tool.
Smart Images
Figure CN109304659B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of shaft neck processing, in particular to a shaft neck polishing device for polishing the shaft neck. Background Art
[0002] As the industrial field has higher and higher requirements for the roughness of the journal, the existing superfinishing machines are difficult to meet the requirements in terms of the machining accuracy of the journal. Summary of the invention
[0003] In order to improve the processing accuracy of the superfinishing machine on the journal, the present invention proposes a journal polishing device, which includes a main frame, a sanding belt, and a sanding belt disk, a sanding belt driving wheel, a damping pressure wheel, a first driving motor and a second driving motor installed on the main frame, one end of the sanding belt is connected to the sanding belt disk and wound on the sanding belt disk, the other end of the sanding belt is connected to the sanding belt driving wheel, and the sanding belt located between the sanding belt disk and the sanding belt driving wheel is attached to the damping pressure wheel when passing through the damping pressure wheel; a driving gear is provided on the driving shaft of the first driving motor, and the driving gear is meshed with the sanding belt driving wheel externally and drives the sanding belt driving wheel to rotate under the drive of the first driving motor; a reverse driving gear is provided on the driving shaft of the second driving motor, and the reverse driving gear is meshed with the sanding belt disk externally and drives the sanding belt disk to rotate in the reverse direction under the drive of the second driving motor. The journal polishing device of the present invention utilizes a first drive motor to drive the sand belt drive wheel to rotate, thereby driving the sand belt attached to the damping pressure wheel to move, so that the sand belt performs super-finishing on the journal of the workpiece, which can greatly improve the machining accuracy of the workpiece surface, especially the journal surface of the workpiece, that is, reduce the roughness of the journal surface of the workpiece; and utilizes a second drive motor to drive the sand belt disk to rotate in the opposite direction, so as to facilitate the reversal of the sand belt.
[0004] Preferably, the journal polishing device further comprises an oscillation unit, which is connected to the damping pressure wheel and drives the damping pressure wheel to oscillate. Further, the oscillation unit comprises an oscillation motor, which is connected to the damping pressure wheel and drives the damping pressure wheel to oscillate. In this way, the oscillation motor in the oscillation unit can be used to drive the damping pressure wheel, so that the damping pressure wheel generates high-frequency oscillation, thereby further improving the machining accuracy of the abrasive belt on the workpiece journal surface.
[0005] Preferably, the journal polishing device further comprises a movable base with a driving cylinder, the movable base is mounted on the fixed base and connected to the main frame at the bottom of the main frame. Further, the driving cylinder is a driving cylinder. In this way, when the journal polishing device is used to perform super-finishing on the journal of a workpiece, the position of the movable base can be adjusted as needed, and the main frame can be driven by the movable base, thereby completing the position adjustment of the journal polishing device of the present invention, which is convenient to adjust and has a wide range of applications.
[0006] Preferably, a front guide wheel of the sanding belt is provided between the sanding belt disc and the damping pressure wheel, and the front guide wheel of the sanding belt is installed on the main frame and close to the edge of the main frame. In this way, during the polishing process, the front guide wheel of the sanding belt can be used to support and tighten the sanding belt between the sanding belt disc and the damping pressure wheel to avoid affecting the polishing effect and efficiency due to sagging of the sanding belt. Furthermore, a sanding belt positioning card is provided between the sanding belt disc and the front guide wheel of the sanding belt, and the sanding belt positioning card includes a positioning member and a clamping shaft. The positioning member is fixedly installed on the main frame and close to the front guide wheel of the sanding belt. The clamping shaft is vertically connected to the positioning member at the free end of the positioning member, and the clamping shaft is clamped on the frosted surface of the sanding belt. In this way, the sanding belt can be clamped by the sanding belt positioning card to prevent the sanding belt from falling off the front guide wheel of the sanding belt and affecting the polishing effect and efficiency.
[0007] Preferably, a rear guide wheel is provided between the damping pressure wheel and the abrasive belt driving wheel, and the rear guide wheel is mounted and fixed on the main frame. Furthermore, there are multiple rear guide wheels, and the abrasive belt passes between two adjacent rear guide wheels. In this way, multiple rear guide wheels are provided between the damping pressure wheel and the abrasive belt driving wheel, so that the abrasive belt between the damping pressure wheel and the abrasive belt driving wheel can be guided and positioned, and the abrasive belt can be tightened at the same time, thereby improving the polishing effect and efficiency.
[0008] In summary, the journal polishing device of the present invention has a relatively simple structure and a compact size, and is suitable for installation inside a machine tool; a large number of components are commonly used standard parts, which facilitates subsequent maintenance and repair.
[0009] In addition, the present invention also provides a superfinishing machine, which is equipped with any one of the above-mentioned journal polishing devices. The journal polishing device in the superfinishing machine is an integral module, which can be replaced as a whole for maintenance in the later stage, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a front view schematic diagram of the journal polishing device of the present invention;
[0011] Figure 2 It is a schematic front view of the damping pressure wheel in the journal polishing device of the present invention;
[0012] Figure 3 for Figure 2 AA section diagram in. DETAILED DESCRIPTION
[0013] Next, combine Figure 1-3 The journal polishing device of the present invention is described in detail.
[0014] like Figure 1As shown, the journal polishing device of the present invention comprises a main frame 1, a sanding belt 2, a movable base 3, and a sanding belt disc 4, a sanding belt driving wheel 5, a damping pressure wheel 6, a first driving motor 7, a second driving motor 12 and an oscillation unit 8 installed on the main frame 1. Among them, one end of the sanding belt 2 is connected to the sanding belt disc 4 and wound on the sanding belt disc 4, the other end of the sanding belt 2 is connected to the sanding belt driving wheel 5, and the sanding belt 2 located between the sanding belt disc 4 and the sanding belt driving wheel 5 is attached to the damping pressure wheel 6 when passing through the damping pressure wheel 6. Preferably, the movable base 3 is provided with a driving cylinder (not shown in the figure), and the movable base 3 is installed on a fixed base (not shown in the figure) and connected to the main frame 1 at the bottom of the main frame 1. Preferably, the driving cylinder is a driving cylinder. In this way, when the journal polishing device is used to perform superfinishing on the journal of a workpiece, the position of the movable base 3 can be adjusted as needed, and the movable base 3 is used to drive the main frame 1, thereby completing the position adjustment of the journal polishing device of the present invention, which is convenient to adjust and has a wide range of applications. Preferably, a front guide wheel 9 of the sanding belt is provided between the sanding belt disc 4 and the damping pressure wheel 6, and the front guide wheel 9 of the sanding belt is installed on the main frame 1 and close to the edge of the main frame 1. In this way, during the polishing process, the front guide wheel 9 of the sanding belt can be used to support and tighten the sanding belt 2 between the sanding belt disc 4 and the damping pressure wheel 6, so as to avoid the sanding belt 2 from sagging and affecting the polishing effect and efficiency. Preferably, a sanding belt positioning card 10 is provided between the sanding belt disc 4 and the front guide wheel 9 of the sanding belt, and the sanding belt positioning card 10 includes a positioning member 101 and a clamping shaft 102, the positioning member 101 is fixedly installed on the main frame 1 and close to the front guide wheel 9 of the sanding belt, the clamping shaft 102 is vertically connected to the positioning member 101 at the free end of the positioning member 101, and the clamping shaft 102 is clamped on the frosted surface of the sanding belt 2. In this way, the sanding belt positioning card 10 can be used to clamp the sanding belt 2, so as to prevent the sanding belt 2 from falling off the front guide wheel 9 of the sanding belt, which affects the polishing effect and efficiency. Preferably, a rear guide wheel 11 is provided between the damping pressure wheel 6 and the abrasive belt driving wheel 5, and the rear guide wheel 11 is fixedly mounted on the main frame 1. Preferably, a plurality of rear guide wheels 11 are provided, and the abrasive belt 2 passes between two adjacent rear guide wheels 11. In this way, a plurality of rear guide wheels 11 are provided between the damping pressure wheel 6 and the abrasive belt driving wheel 5, so that the abrasive belt 2 between the damping pressure wheel 6 and the abrasive belt driving wheel 5 can be guided and positioned, and the abrasive belt 2 can be tightened at the same time, thereby improving the polishing effect and efficiency.
[0015] like Figure 2 and 3As shown, the damping pressure wheel 6 includes a mandrel 61, a roller 62, a metal ring 63, a friction plate 64, a first bearing 65, a second bearing 66, an adjustment pin 67, a damping spring 68 and an adjustment bolt 69. Among them, the positioning end of the mandrel 61 is provided with an adjustment blind hole 611 along the extension direction of the mandrel 61. Preferably, a positioning ring 612 is provided at the outer edge of the positioning end of the mandrel 61 to facilitate the positioning of the bearing, the metal ring 63 and the friction plate 64 during assembly, which is convenient for assembly and reduces manufacturing costs. The first bearing 65, the metal ring 63, the friction plate 64 and the second bearing 66 are sequentially fixed on the mandrel 61, and the first bearing 65 is close to the positioning end of the mandrel 61 and abuts against the positioning ring 612. Preferably, a locking nut 610 is sleeved on the mandrel 61, and the locking nut 610 locks the second bearing 66 on the side away from the positioning end of the mandrel 61. In this way, during assembly, the locking nut 610 can be directly used to cooperate with the positioning ring 612 to lock the bearing, the metal ring 63 and the friction plate 64, and the assembly is simple and convenient. The adjustment pin 67 is vertically arranged in the adjustment blind hole 611 and close to the bottom of the adjustment blind hole 611, and the two ends of the adjustment pin 67 are located between the first bearing 65 and the metal ring 63; the damping spring 68 is installed in the adjustment blind hole 611 through the adjustment bolt 69, and the positioning end of the damping spring 68 is pressed on the adjustment bolt 69, and the adjustment end of the damping spring 68 is pressed on the adjustment pin 67. The roller 62 is sleeved and installed on the first bearing 65 and the second bearing 66. Preferably, a raised collar 621 is provided on the inner wall of the roller 62, and the raised collar 621 is clamped between the first bearing 65 and the second bearing 66. In this way, it is convenient to position the roller 62 during assembly, and it can also prevent the roller 62 from slipping during the rolling process, which affects the use. When in use, the operator can adjust the length of the damping spring by adjusting the adjusting bolt as needed, so that the damping spring generates the required tension and applies it to the metal ring through the adjusting pin, and then transmits it to the friction plate and the second bearing through the metal ring. In this way, when the damping pressure wheel rotates, the friction plate generates damping due to relative movement.
[0016] like Figure 1 As shown, a driving gear 71 is provided on the driving shaft of the first driving motor 7, and the driving gear 71 is externally meshed with the abrasive belt driving wheel 5 and drives the abrasive belt driving wheel 5 to rotate under the drive of the first driving motor 7. In this way, the abrasive belt driving wheel 5 is driven to rotate by the first driving motor 7, thereby driving the abrasive belt 2 attached to the damping pressure wheel 6 to move, so that the abrasive belt 2 performs super-finishing on the journal of the workpiece, which can greatly improve the machining accuracy of the workpiece surface, especially the journal surface of the workpiece, that is, reduce the roughness of the journal surface of the workpiece.
[0017] like Figure 1As shown, a reverse driving gear 121 is provided on the driving shaft of the second driving motor 12, and the reverse driving gear 121 meshes with the outside of the abrasive belt disc 4 and drives the abrasive belt disc 4 to rotate under the drive of the second driving motor 12. In this way, when the abrasive belt 2 wound on the abrasive belt disc 4 is stretched to the bottom, that is, there is no abrasive belt 2 wound on the abrasive belt disc 4, the second driving motor 12 can be used to drive the abrasive belt disc 4 to rotate in the reverse direction through the reverse driving gear 121, so that the abrasive belt 2 is rewound on the abrasive belt disc 4.
[0018] like Figure 1 As shown, the oscillation unit 8 is connected to the damping pressure wheel 6 and drives the damping pressure wheel 6 to oscillate. Preferably, the oscillation unit 8 includes an oscillation motor (not shown in the figure), which is connected to the damping pressure wheel 6 and drives the damping pressure wheel 6 to oscillate. In this way, the oscillation motor in the oscillation unit 8 can be used to drive the damping pressure wheel 6, so that the damping pressure wheel 6 generates high-frequency oscillation, further improving the machining accuracy of the abrasive belt on the workpiece journal surface.
[0019] In summary, the journal polishing device of the present invention has a relatively simple structure and a compact size, and is suitable for installation inside a machine tool; a large number of components are commonly used standard parts, which facilitates subsequent maintenance and repair.
[0020] In addition, the present invention also provides a superfinishing machine, which is equipped with any one of the above-mentioned journal polishing devices. The journal polishing device in the superfinishing machine is an integral module, which can be replaced as a whole for maintenance in the later stage, which is convenient and fast.
Claims
1. A journal polishing device, characterized in that: The journal polishing device comprises a main frame, a sanding belt, and a sanding belt disk, a sanding belt driving wheel, a damping pressure wheel, a first driving motor and a second driving motor installed on the main frame, one end of the sanding belt is connected to the sanding belt disk and wound on the sanding belt disk, the other end of the sanding belt is connected to the sanding belt driving wheel, and the sanding belt between the sanding belt disk and the sanding belt driving wheel is attached to the damping pressure wheel when passing through the damping pressure wheel; a driving gear is arranged on the driving shaft of the first driving motor, and the driving gear is meshed with the sanding belt driving wheel externally and drives the sanding belt driving wheel to rotate under the drive of the first driving motor; a reverse driving gear is arranged on the driving shaft of the second driving motor, and the reverse driving gear is meshed with the sanding belt disk externally and drives the sanding belt disk to rotate in the reverse direction under the drive of the second driving motor; The damping pressure wheel comprises a core shaft, a roller, a metal ring, a friction plate, a first bearing, a second bearing, an adjusting pin, a damping spring and an adjusting bolt. The positioning end of the core shaft is provided with an adjusting blind hole along the extension direction of the core shaft, and the outer edge of the positioning end of the core shaft is provided with a positioning ring; the first bearing, the metal ring, the friction plate and the second bearing are sequentially fixed on the core shaft, and the first bearing is close to the positioning end of the core shaft and abuts against the positioning ring; a locking nut is sleeved on the core shaft, and the locking nut locks the first bearing on the side away from the positioning end of the core shaft. two bearings; the adjusting pin is vertically arranged in the adjusting blind hole and close to the bottom of the adjusting blind hole, and the two ends of the adjusting pin are located between the first bearing and the metal ring; the damping spring is installed in the adjusting blind hole through the adjusting bolt, and the positioning end of the damping spring is pressed against the adjusting bolt, and the adjusting end of the damping spring is pressed against the adjusting pin; the roller sleeve is installed on the first bearing and the second bearing, and a raised retaining ring is arranged on the inner wall of the roller, and the raised retaining ring is clamped between the first bearing and the second bearing.
2. The journal polishing device according to claim 1, characterized in that: The journal polishing device also includes an oscillation unit, which is connected to the damping pressure wheel and drives the damping pressure wheel to oscillate.
3. The journal polishing device according to claim 2, characterized in that: The oscillation unit includes an oscillation motor, which is connected to the damping pressure wheel and drives the damping pressure wheel to oscillate.
4. The journal polishing device according to any one of claims 1 to 3, characterized in that: The journal polishing device also includes a movable base with a driving cylinder, which is installed on the fixed base and connected to the main frame at the bottom of the main frame.
5. The journal polishing device according to claim 4, characterized in that: The driving cylinder is a driving air cylinder.
6. The journal polishing device according to any one of claims 1 to 3, characterized in that: A front guide wheel of the sanding belt is arranged between the sanding belt disc and the damping pressure wheel, and the front guide wheel of the sanding belt is installed on the main frame and close to the edge of the main frame.
7. The journal polishing device according to claim 6, characterized in that: A sanding belt positioning card is arranged between the sanding belt disc and the front guide wheel of the sanding belt, and the sanding belt positioning card includes a positioning member and a clamping shaft. The positioning member is installed and fixed on the main frame and close to the front guide wheel of the sanding belt. The clamping shaft is vertically connected to the positioning member at the free end of the positioning member, and the clamping shaft is clamped on the frosting surface of the sanding belt.
8. The journal polishing device according to any one of claims 1 to 3, characterized in that: A rear guide wheel is arranged between the damping pressure wheel and the abrasive belt driving wheel, and the rear guide wheel is fixedly mounted on the main frame.
9. The journal polishing device according to claim 8, characterized in that: There are multiple rear guide wheels, and the abrasive belt passes between two adjacent rear guide wheels.
10. A superfinishing machine equipped with the journal polishing device according to any one of claims 1 to 9.