Maintenance-free chuck mechanism

Abstract

The utility model discloses a maintenance-free chuck mechanism which is characterized in that a large bevel gear is rotatably arranged in a shell, the top of the large bevel gear is provided with a thread line groove, three clamping jaws distributed at equal intervals and a cleaning and oil supplementing assembly are clamped on the thread line groove, and the cleaning and oil supplementing assembly comprises a moving block; the movable block is arranged on the shell in a sliding mode, cleaning cotton teeth are fixedly connected to the bottom of the movable block, the cleaning cotton teeth are connected to the threaded line groove in a clamped mode, a pipeline for injecting lubricating oil into the threaded line groove is formed in the movable block, and the three clamping jaws are driven to synchronously move towards the center or outwards by rotating the threaded line groove. The cleaning cotton teeth are driven to synchronously move towards the center or outwards, the cleaning cotton teeth can wipe the surface of the thread trunking, lubricating oil can be injected into the thread trunking through the moving block, the precision of the chuck is guaranteed, the chuck is prevented from being disassembled and cleaned, the convenience of the chuck clamp mechanism during maintenance is greatly improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a maintenance-free chuck mechanism. Background Art

[0002] A chuck is a mechanical device used to clamp a workpiece on a machine tool. It is a machine tool accessory that clamps and positions the workpiece by radial movement of movable jaws evenly distributed on the chuck body. Chucks can be divided into two-jaw chucks, three-jaw chucks, four-jaw chucks, six-jaw chucks and special chucks based on the number of jaws. There is a through hole in the center to allow the workpiece or bar to pass through. The back has a cylindrical or short tapered structure and is connected to the end of the machine tool spindle directly or through a flange. The chuck is usually installed on lathes, external cylindrical grinders and internal cylindrical grinders. It can also be used in conjunction with various indexing devices for milling machines and drilling machines. Among them, the three-jaw chuck mainly consists of a chuck body, three jaws, a small bevel gear, a large bevel gear and other components. The chuck body is the basic component, and the three jaws are evenly distributed on the chuck body. The small bevel gear meshes with the large bevel gear. By rotating the small bevel gear, the large bevel gear can be driven to rotate, so that the three jaws move synchronously toward the center or outward.

[0003] In the prior art, the maintenance of the chuck mainly involves lubrication and cleaning between the three jaws and the large bevel gear. Traditional chuck fixtures do not have a cleaning structure, and the chuck is usually disassembled for cleaning and then assembled, making chuck maintenance very cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a maintenance-free chuck mechanism to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a maintenance-free chuck mechanism, comprising: a shell, a large bevel gear is rotatably arranged in the shell, a thread groove is provided on the top of the large bevel gear, three equidistantly distributed claws and a cleaning and oil-replenishing assembly are clamped on the thread groove, the claws are slidably arranged on the shell, the cleaning and oil-replenishing assembly includes a moving block, the moving block is slidably arranged on the shell, the bottom of the moving block is fixedly connected with cleaning cotton teeth, the cleaning cotton teeth are clamped on the thread groove, a pipeline for injecting lubricating oil into the thread groove is provided on the moving block, and as the large bevel gear rotates, the cleaning cotton teeth clean the thread groove wall.

[0006] Furthermore, the number of teeth of the cleaning cotton teeth is less than the number of teeth of the claws, ensuring that the cleaning and oil replenishing assembly can be removed separately.

[0007] Furthermore, a plurality of support columns are fixedly connected to the bottom of the moving block, and the cleaning cotton teeth are sleeved outside the support columns.

[0008] Furthermore, an oil passage is provided in the moving block, an oil filling hole is provided in the supporting column, and the oil passage is communicated with the oil filling hole.

[0009] Furthermore, the moving block and the cleaning cotton teeth are fixedly connected by a first locking screw and a second locking screw.

[0010] Furthermore, a screw hole is provided in the movable block, the screw hole is communicated with the oil passage, a third locking screw is threadedly connected to the screw hole, and a sealing gasket is movably sleeved on the outside of the third locking screw.

[0011] Furthermore, the large bevel gear is engaged with a small bevel gear, and the small bevel gear is fixedly sleeved on the rotating rod, and one end of the rotating rod with a hexagonal hole extends out of the housing.

[0012] In the above technical solution, the maintenance-free chuck mechanism provided by the present invention has the following beneficial effects:

[0013] The utility model drives the three clamping claws to move synchronously toward the center or outward by rotating the thread groove, and at the same time drives the cleaning cotton teeth to move synchronously toward the center or outward, so that when the chuck is clamping the product to be processed, the cleaning cotton teeth can wipe the surface of the thread groove, and lubricating oil can be injected into the thread groove through the moving block, thereby ensuring the accuracy of the chuck, avoiding the need to disassemble and clean the chuck, greatly improving the convenience of maintaining the chuck clamp mechanism, and reducing the difficulty of operation.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the front structure of the internal structure of the chuck provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the internal back structure of the chuck provided in an embodiment of the present utility model;

[0020] Figure 4 A cross-sectional view of the cleaning and oil replenishing assembly provided in an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1. Housing; 2. Clamping claw; 3. Cleaning and oil-replenishing assembly; 31. Moving block; 32. Cleaning cotton teeth; 33. Screw hole; 34. Oil passage; 35. Support column; 36. Oil filling hole; 37. First locking screw; 38. Second locking screw; 4. Turning rod; 41. Small bevel gear; 5. Large bevel gear; 51. Threaded groove; 6. Third locking screw; 61. Sealing gasket. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0024] See also Figures 1-4 , a maintenance-free chuck mechanism, comprising: a shell 1, a large bevel gear 5 is rotatably arranged in the shell 1, and a threaded groove 51 is opened on the top of the large bevel gear 5, and the threaded groove 51 is consistent with the opening method and method of the threaded groove in the three-jaw chuck in the prior art. Three equidistantly distributed claws 2 and a cleaning and oil-replenishing component 3 are clamped on the threaded groove 51, and the claws 2 are slidably arranged on the shell 1. The cleaning and oil-replenishing component 3 includes a moving block 31, which is slidably arranged on the shell 1, and a cleaning cotton tooth 32 is fixedly connected to the bottom of the moving block 31. The cleaning cotton tooth 32 is clamped on the threaded groove 51, and a pipeline for injecting lubricating oil into the threaded groove 51 is opened on the moving block 31. As the large bevel gear 5 rotates, the cleaning cotton tooth 32 cleans the groove wall of the threaded groove 51.

[0025] Specifically, the utility model drives the three claws 2 to move synchronously toward the center or outward by rotating the thread groove 51, and at the same time drives the cleaning cotton teeth 32 to move synchronously toward the center or outward, so that when the chuck is clamping the product to be processed, the cleaning cotton teeth 32 can wipe the surface of the thread groove 51, and lubricating oil can be injected into the thread groove 51 through the moving block 31, thereby ensuring the accuracy of the chuck, avoiding the need to disassemble and clean the chuck, greatly improving the convenience of maintaining the chuck clamp mechanism, and reducing the difficulty of operation.

[0026] Furthermore, the number of teeth of the cleaning cotton teeth 32 is less than the number of teeth of the claws 2, ensuring that the cleaning and oil replenishing assembly 3 can be removed separately.

[0027] Specifically, refer to Figure 2 The claw 2 has five teeth, and the cleaning cotton teeth 32 have only three teeth. The installation process of the claw 2 and the cleaning oil replenishing component 3 is the same. Both align the bottom teeth with the notch of the thread groove 51, and rotate the large bevel gear 5 so that the claw 2 or the cleaning oil replenishing component 3 is rotated onto the thread groove 51. This installation method is a common means used by those skilled in the art and will not be explained in detail here. This makes it possible that when the cleaning oil replenishing component 3 needs to be removed to clean the cleaning cotton teeth 32, it is only necessary to rotate the large bevel gear 5 in the opposite direction so that the cleaning cotton teeth 32 are disengaged from the thread groove 51 to remove the cleaning oil replenishing component 3. Since the claw 2 has more teeth than the cleaning cotton teeth 32, the claw 2 is still in a clamping relationship with the thread groove 51, so that the cleaning oil replenishing component 3 can be removed and cleaned without disassembling the chuck, which greatly improves the convenience of chuck maintenance and reduces the difficulty of chuck cleaning.

[0028] Furthermore, a plurality of support columns 35 are fixedly connected to the bottom of the moving block 31 , and the cleaning cotton teeth 32 are sleeved outside the support columns 35 .

[0029] Specifically, refer to Figure 4 By setting three support columns 35, a skeleton is provided for the cleaning cotton teeth 32, so that the cleaning cotton teeth 32 can be better attached to the groove wall of the thread groove 51, and the inner wall and groove bottom of the thread groove 51 can be better cleaned.

[0030] Furthermore, an oil passage 34 is provided in the movable block 31, an oil filling hole 36 is provided in the support column 35, the oil passage 34 is connected to the oil filling hole 36, a screw hole 33 is provided in the movable block 31, the screw hole 33 is connected to the oil passage 34, a third locking screw 6 is threadedly connected to the inner surface of the screw hole 33, and a sealing gasket 61 is movably sleeved on the outer side of the third locking screw 6.

[0031] Specifically, refer to Figure 2 and Figure 4 By unscrewing the third locking screw 6, the lubricating oil is injected from the screw hole 33, and the lubricating oil enters the thread groove 51 through the screw hole 33, the oil passage 34, and the oil filling hole 36. Then the cleaning cotton teeth 32 absorb the lubricating oil. As the large bevel gear 5 rotates, the cleaning cotton teeth 32 wipe and lubricate the groove wall and bottom of the thread groove 51. Then the lubricating oil on the groove wall and bottom of the thread groove 51 is transferred to the claw 2, and the claw 2 and the thread groove 51 are maintained.

[0032] Furthermore, the moving block 31 and the cleaning cotton teeth 32 are fixedly connected by a first locking screw 37 and a second locking screw 38 .

[0033] Specifically, refer to Figure 4The first locking screw 37 and the second locking screw 38 are respectively located at the front and rear ends of the cleaning cotton teeth 32 to lock the cleaning cotton teeth 32 on the moving block 31.

[0034] Furthermore, the large bevel gear 5 is meshed with a small bevel gear 41 . The small bevel gear 41 is fixedly sleeved on the rotating rod 4 . One end of the rotating rod 4 with a hexagonal hole extends out of the housing 1 .

[0035] Specifically, a wrench is inserted into the hexagonal hole to rotate the rotating rod 4, so that the small bevel gear 41 drives the large bevel gear 5 to rotate, thereby achieving the synchronous movement of the three claws 2 toward the center or outward.

[0036] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A maintenance-free chuck mechanism, comprising: The housing (1) is characterized in that a large bevel gear (5) is rotatably arranged in the housing (1), a thread groove (51) is provided on the top of the large bevel gear (5), three equally spaced claws (2) and a cleaning and oil replenishing component (3) are clamped on the thread groove (51), the claws (2) are slidably arranged on the housing (1), the cleaning and oil replenishing component (3) includes a moving block (31), the moving block (31) is slidably arranged on the housing (1), a cleaning cotton tooth (32) is fixedly connected to the bottom of the moving block (31), the cleaning cotton tooth (32) is clamped on the thread groove (51), a pipeline for injecting lubricating oil into the thread groove (51) is provided on the moving block (31), and as the large bevel gear (5) rotates, the cleaning cotton tooth (32) cleans the groove wall of the thread groove (51).

2. A maintenance-free chuck mechanism according to claim 1, characterized in that: The number of teeth of the cleaning cotton teeth (32) is less than the number of teeth of the claws (2), ensuring that the cleaning and oil replenishing assembly (3) can be removed separately.

3. A maintenance-free chuck mechanism according to claim 2, characterized in that: The bottom of the moving block (31) is fixedly connected to a plurality of support columns (35), and the cleaning cotton teeth (32) are sleeved outside the support columns (35).

4. A maintenance-free chuck mechanism according to claim 3, characterized in that: An oil passage (34) is provided in the moving block (31), an oil injection hole (36) is provided in the supporting column (35), and the oil passage (34) is communicated with the oil injection hole (36).

5. A maintenance-free chuck mechanism according to claim 1, characterized in that: The moving block (31) and the cleaning cotton teeth (32) are fixedly connected via a first locking screw (37) and a second locking screw (38).

6. A maintenance-free chuck mechanism according to claim 4, characterized in that: A screw hole (33) is provided in the movable block (31), the screw hole (33) is communicated with the oil passage (34), a third locking screw (6) is connected to the inner thread of the screw hole (33), and a sealing gasket (61) is movably sleeved on the outer side of the third locking screw (6).

7. A maintenance-free chuck mechanism according to claim 1, characterized in that: The large bevel gear (5) is meshed with a small bevel gear (41), and the small bevel gear (41) is fixedly sleeved on the rotating rod (4). One end of the rotating rod (4) with a hexagonal hole extends out of the housing (1).

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