High-precision eccentric bushing turning tool

Abstract

The utility model discloses a high-precision eccentric bushing turning tool, which belongs to the technical field of eccentric bushing machining, and comprises a bottom plate, a second panel is fixedly mounted above the bottom plate, a first panel is movably mounted above the second panel, and a second panel is mounted above the first panel. A center shaft is arranged in the center of the bottom plate and the center of the second panel, the front end of the center shaft extends out of the second panel, and the outer side of the front end of the center shaft is sleeved with a ball bearing. A plurality of mounting holes are formed in the first panel, and the distances between the mounting holes and the axis of the middle shaft are different, so that eccentric bushings with different eccentric distances can be machined; the first panel is rotationally connected with the center shaft through the ball bearing, balls in the ball bearing are tightly attached to the bearing, the gap is stable, the protective cover plate is installed above the center shaft, the center shaft and the ball bearing are completely covered with the protective cover plate, metal filings generated in turning can be repeatedly blocked, and the metal filings are prevented from entering the gap of the ball bearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of eccentric sleeve processing, and in particular relates to a high-precision eccentric sleeve turning processing tool. Background Art

[0002] The function of the eccentric sleeve is to achieve adjustable inner hole diameter, and add set screws to achieve the purpose of circumferential and axial fixation of the inner ring. The eccentric sleeve is suitable for light load and impact-free occasions; the accuracy of the eccentric sleeve directly affects the stability of the eccentric sleeve. During the machining process of the eccentric sleeve, in order to ensure the accuracy of the eccentric sleeve, it is necessary to use processing tooling to assist the eccentric sleeve machining.

[0003] Conventional eccentric sleeve processing tooling is set up separately according to the processing model, that is, the processing of one model of eccentric sleeve requires the production of a corresponding model of eccentric sleeve tooling. Due to the high precision requirements of the eccentric sleeve tooling, this greatly increases the processing cost of the eccentric sleeve. At the same time, during the eccentric sleeve turning process, since the tooling needs to rotate, as the processing time passes, the rotating components of the tooling wear, which will cause the rotating fit clearance to increase, thereby causing the processing accuracy to decrease. At the same time, the upper surface of the tooling is the pressure surface of the assembled workpiece. During the long-term processing process, it is subjected to the gravity of the workpiece, which also causes the pressure surface to deform, thereby affecting the processing accuracy of the eccentric sleeve. Utility Model Content

[0004] The utility model aims to provide a high-precision eccentric sleeve turning tooling to solve the problems of the existing eccentric sleeve processing tooling in the use process proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision eccentric sleeve turning tool, comprising a base plate, a second panel is fixedly installed on the top of the base plate, a first panel is movably installed on the top of the second panel, a central axis is arranged at the center position of the base plate and the second panel, and the front end of the central axis extends out of the second panel, a ball bearing is sleeved on the outer side of the front end of the central axis, and the central axis is connected to the first panel through the ball bearing, a protective cover is fixedly installed on the front end of the central axis, the protective cover fully covers the ball bearing, and a plurality of mounting holes are arranged on the upper surface of the first panel, and the distances between the plurality of mounting holes and the axis center of the central axis are different.

[0006] Preferably, the ball bearing is interference connected with the first panel.

[0007] Preferably, the first panel is made of ductile iron.

[0008] Preferably, the second panel is fixedly connected to the bottom plate by bolts, and the protective cover is fixedly connected to the central axis by bolts.

[0009] Preferably, the bottom plate is provided with a plurality of hollow portions and reinforcing ribs.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] A plurality of mounting holes are arranged on the first panel, and the distances between the plurality of mounting holes and the axis center of the central shaft are different, so that the processing of eccentric sleeves with different eccentric distances can be realized; the first panel is rotatably connected to the central shaft through a ball bearing, the balls in the ball bearing are tightly fitted to the bearing, and the gap is stable, and a protective cover plate is installed above the central shaft, which completely covers the central shaft and the ball bearing, and can repeatedly block metal chips generated during lathe processing, and prevent metal chips from entering the gap of the ball bearing, thereby avoiding the increase of the gap caused by the wear of metal chips, so that the use stability of the processing tooling is stronger and the processing accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0014] In the figure: 1, bottom plate; 2, second panel; 3, first panel; 4, eccentric sleeve body; 5, mounting hole; 6, middle axis; 7, ball bearing; 8, protective cover plate; 9, reinforcing ribs; 10, hollow part. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Reference Figure 1-2 A high-precision eccentric turning tooling comprises a base plate 1, a second panel 2 is fixedly mounted above the base plate 1, a first panel 3 is movably mounted above the second panel 2, a central axis 6 is arranged at the center position of the base plate 1 and the second panel 2, and the front end of the central axis 6 extends out of the second panel 2, a ball bearing 7 is sleeved on the outer side of the front end of the central axis 6, and the central axis 6 is connected to the first panel 3 through the ball bearing 7, a protective cover plate 8 is fixedly mounted on the front end of the central axis 6, and the protective cover plate 8 fully covers the ball bearing 7, and a plurality of mounting holes 5 are arranged on the upper surface of the first panel 3, and the distances between the plurality of mounting holes 5 and the axis center of the central axis 6 are different.

[0017] Aiming at the problem that the existing eccentric sleeve lathe processing tooling has general adaptability during processing, and each group of eccentric sleeve processing process needs to be set up with a corresponding eccentric sleeve lathe processing tooling, the tooling of this scheme is provided with multiple mounting holes 5 on the first panel 3, and the distances between the multiple mounting holes 5 and the axis of the middle shaft 6 are different, so that the processing of eccentric sleeves with different eccentric distances can be realized. In this technical scheme, the corresponding eccentric distances of the multiple mounting holes 5 after processing are 12cm, 15cm, and 16cm respectively. When the clamping jacket of the eccentric sleeve body 4 is fixed and docked with different mounting holes 5, eccentric sleeves with different eccentric distances can be processed;

[0018] In order to solve the problem of insufficient machining precision of the existing eccentric sleeve, the first panel 3 of the present invention is rotatably connected to the central axis 6 via a ball bearing 7. The balls in the ball bearing fit tightly with the bearing and the gap is stable. A protective cover plate 8 is installed above the central axis 6. The protective cover plate 8 completely covers the central axis 6 and the ball bearing 7, and can repeatedly block metal chips generated during machining to prevent metal chips from entering the gap of the ball bearing 7, thereby preventing the gap from becoming larger due to wear of the metal chips, making the use of the machining tooling more stable and the machining precision higher.

[0019] Furthermore, the ball bearing is interference-connected with the first panel 3 .

[0020] Through this technical solution, the ball bearing 7 is installed with the first panel 3 by interference fit, so that the ball bearing 7 can be stably connected to the first panel 3, ensuring the connection stability, so that the first panel 3 can rotate stably.

[0021] Furthermore, the material of the first panel 3 is ductile iron.

[0022] Through this technical solution, ductile iron has good deformation resistance, thereby ensuring the surface flatness of the first panel 3 and the processing accuracy of the eccentric sleeve. At the same time, the surface of the first panel 3 is regularly ground and leveled to ensure the processing effect of the eccentric sleeve.

[0023] Furthermore, the second panel 2 is fixedly connected to the bottom plate 1 by bolts, and the protective cover plate 8 is fixedly connected to the central axis 6 by bolts.

[0024] It is assembled and installed by bolts, which is convenient for disassembly and installation, and convenient for disassembly and maintenance. It is more convenient to use and can be maintained regularly to ensure that the accuracy error of the eccentric sleeve is within a controllable range.

[0025] Furthermore, a plurality of hollow portions 10 and reinforcing ribs 9 are provided on the bottom plate 1 .

[0026] Through this technical solution, the hollow portion 10 reduces the weight of the tooling and reduces the energy consumption during machining, and the reinforcing ribs 9 ensure the strength of the bottom plate 1 and avoid deformation.

[0027] Working principle: The tooling is provided with a plurality of mounting holes 5 on the first panel 3, and the distances between the plurality of mounting holes 5 and the axis center of the central axis 6 are different, so that the processing of eccentric sleeves with different eccentric distances can be realized, and the adaptability is stronger and the use flexibility is higher; the first panel 3 is rotatably connected with the central axis 6 through the ball bearing 7, and the balls in the ball bearing fit tightly with the bearing, and the gap is stable. A protective cover plate 8 is installed above the central axis 6, and the protective cover plate 8 completely covers the central axis 6 and the ball bearing 7, and can repeatedly block the metal chips generated during the turning process, and prevent the metal chips from entering the gap of the ball bearing 7, thereby avoiding the increase of the gap caused by the wear of the metal chips, so that the use stability of the processing tooling is stronger and the processing accuracy is higher.

[0028] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present invention and features of different embodiments or examples without contradiction.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision eccentric turning tool, characterized by: It includes a base plate, a second panel is fixedly installed on the top of the base plate, a first panel is movably installed on the top of the second panel, a central axis is arranged at the center position of the base plate and the second panel, and the front end of the central axis extends out of the second panel, a ball bearing is sleeved on the outer side of the front end of the central axis, and the central axis is connected to the first panel through the ball bearing, a protective cover is fixedly arranged on the front end of the central axis, the protective cover fully covers the ball bearing, and a plurality of mounting holes are arranged on the upper surface of the first panel, and the distances between the plurality of mounting holes and the axis center of the central axis are different.

2. A high-precision eccentric turning tool according to claim 1, characterized in that: The ball bearing is interference connected with the first panel.

3. The high-precision eccentric turning tool according to claim 1, characterized in that: The material of the first panel is ductile iron.

4. The high-precision eccentric turning tool according to claim 1, characterized in that: The second panel is fixedly connected to the bottom plate by bolts, and the protective cover is fixedly connected to the central axis by bolts.

5. The high-precision eccentric turning tool according to claim 1, characterized in that: The bottom plate is provided with a plurality of hollow parts and reinforcing ribs.

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