Vibratory superfinishing head

Abstract

This utility model relates to an ultra-precision machining head for ultra-precision machining equipment, specifically a vibration-type ultra-precision machining head, including a rotary servo motor (4), a vibration servo motor (6), a tool holder connecting plate (7), an oilstone (12), and a cylinder (13). The lower part of the tool holder connecting plate (7) is fixedly connected to a vibration turntable mechanism, which includes a vibration turntable rotating end (3) and a vibration turntable fixed end (5). The rotary servo motor (4) and the vibration servo motor (6) are fixedly connected to the end face of the vibration turntable fixed end (5), and a slide rail mechanism and a cylinder bracket (9) are fixedly connected to the end face of the vibration turntable rotating end (3). This utility model provides an eccentric shaft type vibration ultra-precision machining head that is easy to operate, with low cost, stable vibration frequency, and easy adjustment. The angle of the ultra-precision machining head is adjusted by the servo motor during operation, which is quick and convenient. Its linear guide rail vibration guidance improves the machining accuracy.

Description

Technical Field

[0001] This utility model relates to an ultra-precision machining head for ultra-precision machining equipment, specifically a vibration-type ultra-precision machining head. Background Technology

[0002] The existing ultra-precision machines used for ultra-precision machining of large bearings are mostly expensive imported complete sets of ultra-precision machines. They use pneumatic ultra-precision machining heads to perform ultra-precision machining on bearings. However, the pneumatic vibration frequency of these pneumatic ultra-precision machining heads is unstable and inconvenient to adjust. The angle adjustment during operation also requires manual adjustment, which is very inconvenient. Moreover, the pneumatic ultra-precision guide uses shaft-type guides, which have poor guiding accuracy and poor bearing ultra-precision machining effect. Summary of the Invention

[0003] The purpose of this invention is to provide an easy-to-operate vibration-type ultra-precision machining head, which solves the problems of high cost of ultra-precision machines used for ultra-precision machining of large bearings, unstable vibration frequency of ultra-precision machining heads, inconvenient adjustment of vibration frequency, inconvenient angle adjustment during operation of ultra-precision machining heads, and poor guiding accuracy in ultra-precision machining.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a vibration-type ultra-precision machining head, comprising a rotary servo motor, a vibration servo motor, a tool holder connecting plate, an oilstone, and a cylinder. A vibration turntable mechanism is fixedly connected to the lower part of the tool holder connecting plate. The vibration turntable mechanism includes a rotating end and a fixed end. The top of the fixed end is fixedly connected to the lower part of the tool holder connecting plate by multiple turntable bolts. A rotary servo motor and a vibration servo motor are fixedly connected to the end face of the fixed end. A slide rail mechanism and a cylinder bracket are fixedly connected to the end face of the rotating end.

[0005] The slide rail mechanism includes a support arm guide rail, a support arm slide rail, a support arm, a cylinder, and a piston rod connecting bracket. The support arm guide rail is fixedly connected to the end face of the rotating end of the vibrating turntable by bolts. The support arm slide rail on the support arm guide rail is fixedly connected to the support arm by bolts. Oilstones are fixedly connected to both ends of the support arm. A piston rod connecting bracket is fixedly connected to the middle of the support arm by bolts. The piston rod connecting bracket is fixedly connected to the top of the piston rod of the cylinder. The bottom of the cylinder is fixedly connected to the cylinder bracket by bolts.

[0006] In the slide rail mechanism, the central axis of the piston rod is parallel to the guide rail of the support arm.

[0007] Furthermore, the oilstone is fixedly connected to the support arm by an oilstone fixing plate, wherein the fixing end of the oilstone fixing plate is fixed to the end of the support arm by screws, and the clamping part of the oilstone fixing plate clamps the oilstone.

[0008] Furthermore, the oilstones are fixedly connected to both ends of the support arm at staggered heights.

[0009] Furthermore, the ultra-precision machining pressure exerted by the oilstone on the workpiece is equal to the output pressure of the cylinder.

[0010] Furthermore, the support arm guide rail is horizontally installed on the lower part of the end face of the rotating end of the vibrating turntable.

[0011] Furthermore, the vibratory ultra-precision machining head is fixedly connected to the tool post of the ultra-precision machine tool by bolts passing through the tool post connection hole of the tool post connection plate.

[0012] Furthermore, the vibratory ultra-precision machining head is an eccentric shaft vibratory ultra-precision machining head.

[0013] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides an eccentric shaft type vibration ultra-precision machining head that is easy to operate. It has low cost, stable vibration frequency, and is easy to adjust. The angle of the ultra-precision machining head is adjusted by a servo motor during operation, which is quick and convenient. Its linear guide rail vibration guidance improves the machining accuracy. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first type of vibration-type ultra-precision machining head according to this utility model;

[0015] Figure 2 This is a schematic diagram of the second three-dimensional structure of a vibration-type ultra-precision machining head according to this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of a vibration-type ultra-precision machining head according to this utility model;

[0017] Figure 4 yes Figure 3 Schematic diagram of the left-side view structure.

[0018] The diagram shows: 1-Support arm guide rail, 2-Support arm slide rail, 3-Vibration turntable rotating end, 4-Rotation servo motor, 5-Vibration turntable fixed end, 6-Vibration servo motor, 7-Tool holder connecting plate, 8-Tool holder connecting hole, 9-Cylinder bracket, 10-Support arm, 11-Wheelstone fixing plate, 12-Wheelstone, 13-Cylinder, 14-Piston rod connecting bracket, 15-Turntable bolt. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0020] like Figures 1 to 4As shown, a vibratory ultra-precision machining head includes a rotary servo motor 4, a vibration servo motor 6, a tool holder connecting plate 7, an oilstone 12, and a cylinder 13. A vibration turntable mechanism is fixedly connected to the lower part of the tool holder connecting plate 7. The vibration turntable mechanism includes a vibration turntable rotating end 3 and a vibration turntable fixed end 5. The top of the vibration turntable fixed end 5 is fixedly connected to the lower part of the tool holder connecting plate 7 by multiple turntable bolts 15. The rotary servo motor 4 and the vibration servo motor 6 are fixedly connected to the end face of the vibration turntable fixed end 5. A slide rail mechanism and a cylinder bracket 9 are fixedly connected to the end face of the vibration turntable rotating end 3.

[0021] The slide rail mechanism includes a support arm guide rail 1, a support arm slide rail 2, a support arm 10, a cylinder 13, and a piston rod connecting bracket 14. The support arm guide rail 1 is fixedly connected to the end face of the rotating end 3 of the vibrating turntable by bolts. The support arm slide rail 2 on the support arm guide rail 1 is fixedly connected to the support arm 10 by bolts. The two ends of the support arm 10 are fixedly connected to oilstones 12. The middle part of the support arm 10 is fixedly connected to a piston rod connecting bracket 14 by bolts. The piston rod connecting bracket 14 is fixedly connected to the top of the piston rod of the cylinder 13. The bottom of the cylinder 13 is fixedly connected to the cylinder bracket 9 by bolts.

[0022] In the slide rail mechanism, the central axis of the piston rod is parallel to the support arm guide rail 1;

[0023] In this embodiment, the rotary servo motor 4 drives the rotating end 3 of the vibrating turntable to rotate, which can quickly and conveniently adjust the working angle of the ultra-precision machining head; the vibrating servo motor 6 provides a stable and easily adjustable vibration frequency for the vibrating turntable mechanism; the slide rail mechanism fixedly connected to the end face of the rotating end 3 of the vibrating turntable provides linear guide vibration guidance for the ultra-precision machining head, improving the ultra-precision machining accuracy; the piston rod center axis and the support arm guide rail 1 are parallel to each other in the slide rail mechanism, which is a necessary condition for the slide rail mechanism to achieve free movement.

[0024] like Figure 1 As shown, the oilstone 12 is fixedly connected to the support arm 10 by the oilstone fixing plate 11, wherein the fixing end of the oilstone fixing plate 11 is fixed to the end of the support arm 10 by screws, and the clamping part of the oilstone fixing plate 11 clamps the oilstone 12.

[0025] The oilstones 12 are fixedly connected to both ends of the support arm 10 at staggered heights.

[0026] The ultra-precision machining pressure of the oilstone 12 on the workpiece is equal to the output pressure of the cylinder 13.

[0027] In this embodiment, the oilstone 12 is fixedly connected to the support arm 10 by the oilstone fixing plate 11. The clamping part of the oilstone fixing plate 11 clamps the oilstone 12 to perform ultra-precision machining on the workpiece. This structural design is to facilitate the quick replacement of the oilstone 12. The oilstone 12 is fixedly connected at different heights at both ends of the support arm 10 to facilitate the ultra-precision machining head to process surfaces at different angles and positions. The output pressure of the cylinder 13 stably provides the ultra-precision machining pressure of the oilstone 12 on the workpiece.

[0028] like Figure 2 As shown, the support arm guide rail 1 is horizontally installed on the lower part of the end face of the rotating end 3 of the vibrating turntable; in this embodiment, the support arm guide rail 1 is horizontally installed on the lower part of the end face of the rotating end 3 of the vibrating turntable, which facilitates the rotation and adjustment of the ultra-precision machining head.

[0029] like Figures 1 to 4 As shown, the vibratory ultra-precision machining head is fixedly connected to the tool post of the ultra-precision machine tool by bolts passing through the tool post connection hole 8 of the tool post connection plate 7; this embodiment illustrates the connection relationship between the vibratory ultra-precision machining head and the ultra-precision machine tool.

[0030] In summary, the vibratory ultra-precision machining head is an eccentric shaft vibratory ultra-precision machining head. In this embodiment, because the eccentric shaft vibration mechanism has low cost and can provide a stable and easily adjustable vibration frequency, the eccentric shaft vibratory ultra-precision machining head is adopted.

[0031] Furthermore, the rotary servo motor 4, vibration servo motor 6, cylinder 13, and vibration turntable mechanism described in this utility model are all mature existing technologies and common knowledge, and will not be explained in detail in this utility model.

[0032] The specific working principle of this utility model is as follows:

[0033] This utility model mainly targets the ultra-precision machining of the annular guide surface of large bearings using a vertical lathe;

[0034] First, place the large bearing ring on the spindle of the vertical lathe, align the coaxiality of the spindle and the bearing ring, and clamp them.

[0035] Then, the vibratory ultra-precision machining head is fixedly installed on the tool post of the vertical lathe, and the power and air supply of the vertical lathe and the vibratory ultra-precision machining head are turned on.

[0036] Finally, control the movement of the tool post of the vertical lathe so that the oilstone 12 of the vibrating ultra-precision machining head on the tool post approaches the bearing ring. When the oilstone 12 contacts the machining guide surface of the bearing ring and reaches the predetermined pressure value, start the spindle of the vertical lathe to perform ultra-precision machining.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any simple modifications, equivalent substitutions, improvements, etc., made within the technical concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration-type ultra-precision machining head, comprising a rotary servo motor (4), a vibration servo motor (6), a tool holder connecting plate (7), an oilstone (12), and a cylinder (13), characterized in that: A vibration turntable mechanism is fixedly connected to the lower part of the tool holder connecting plate (7). The vibration turntable mechanism includes a vibration turntable rotating end (3) and a vibration turntable fixed end (5). The top of the vibration turntable fixed end (5) is fixedly connected to the lower part of the tool holder connecting plate (7) by multiple turntable bolts (15). A rotary servo motor (4) and a vibration servo motor (6) are fixedly connected to the end face of the vibration turntable fixed end (5). A slide rail mechanism and a cylinder bracket (9) are fixedly connected to the end face of the vibration turntable rotating end (3). The slide rail mechanism includes a support arm guide rail (1), a support arm slide rail (2), a support arm (10), a cylinder (13), and a piston rod connecting bracket (14). The support arm guide rail (1) is fixedly connected to the end face of the rotating end (3) of the vibrating turntable by bolts. The support arm slide rail (2) on the support arm guide rail (1) is fixedly connected to the support arm (10) by bolts. The two ends of the support arm (10) are fixedly connected to an oilstone (12). The middle part of the support arm (10) is fixedly connected to a piston rod connecting bracket (14) by bolts. The piston rod connecting bracket (14) is fixedly connected to the top of the piston rod of the cylinder (13). The bottom of the cylinder (13) is fixedly connected to the cylinder bracket (9) by bolts. In the slide rail mechanism, the central axis of the piston rod is parallel to the support arm guide rail (1).

2. The vibration-type ultra-precision machining head according to claim 1, characterized in that: The oilstone (12) is fixedly connected to the support arm (10) by an oilstone fixing plate (11), wherein the fixing end of the oilstone fixing plate (11) is fixed to the end of the support arm (10) by screws, and the clamping part of the oilstone fixing plate (11) clamps the oilstone (12).

3. The vibration-type ultra-precision machining head according to claim 2, characterized in that: The oilstones (12) are fixedly connected to both ends of the support arm (10) at different heights.

4. The vibration-type ultra-precision machining head according to claim 3, characterized in that: The pressure exerted by the oilstone (12) on the workpiece for ultra-precision machining is equal to the output pressure of the cylinder (13).

5. The vibration-type ultra-precision machining head according to claim 1, characterized in that: The support arm guide rail (1) is horizontally installed on the lower end face of the rotating end (3) of the vibrating turntable.

6. The vibration-type ultra-precision machining head according to claim 1, characterized in that: The vibratory ultra-precision machining head is fixedly connected to the tool post of the ultra-precision machine tool by bolts passing through the tool post connection hole (8) of the tool post connection plate (7).

7. A vibration-type ultra-precision machining head according to any one of claims 1 to 6, characterized in that: The vibratory ultra-precision machining head is an eccentric shaft vibratory ultra-precision machining head.

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