Center frame

Abstract

The utility model relates to the technical field of lathe auxiliary tools, in particular to a center frame which comprises a frame body provided with a horizontally-arranged supporting plane. The first limiting assembly is horizontally and rotationally connected to the supporting plane of the frame body; the second limiting assemblies are adjustably connected to the frame body, and the tail ends of the second limiting assemblies and the tail end of the first limiting assembly are arranged in a circumferential surrounding mode so as to support the peripheral side of a shaft part; according to the center frame, an operator can release the limitation on the shaft piece in the center frame by horizontally rotating the first limiting assembly, the horizontal rotation path is relatively short and is carried out in the same plane, so that the operator can more easily control the rotation speed and force, and during horizontal rotation, the operation is more convenient. Operators can stand or adopt other comfortable postures to operate, and physical fatigue caused by long-time stooping or squatting is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of lathe auxiliary tools, and in particular to a center rest. Background Technology

[0002] In the field of machining, shafts, as key transmission and support components, require extremely high precision and surface quality. To ensure the stability and accuracy of shafts during machining, a center rest is typically used for auxiliary support. The center rest, through its main structure, fits tightly against the shaft, providing additional support and effectively preventing a decrease in precision due to vibration or deformation generated during machining. However, in practice, after machining, the shaft needs to be unlocked from the center rest and removed for subsequent processing. The traditional unlocking method involves flipping the main body of the center rest to release the shaft.

[0003] The main body of the center rest is typically made of high-strength materials to ensure sufficient rigidity and stability, enabling it to withstand the various forces and torques generated by the shafts during machining. Therefore, the main body of the center rest is often quite heavy. During the flipping of the center rest, operators need to overcome significant inertia and friction, which not only increases the difficulty of operation but may also lead to safety hazards. Especially on production lines requiring frequent shaft changes or continuous machining, prolonged periods of this high-intensity physical labor can easily cause fatigue and distraction, further impacting production efficiency and machining quality. Utility Model Content

[0004] The purpose of this invention is to provide a central frame to solve the problem of difficulty in operation when the central frame is flipped and unlocked in the prior art.

[0005] The technical solution of this utility model is: a central frame, comprising: a frame body, having a horizontally arranged support plane; a first limiting component, which is horizontally rotatably connected to the support plane of the frame body; and a second limiting component, wherein multiple sets of the second limiting component are provided, the multiple sets of the second limiting component are adjustablely connected to the frame body, and the ends of the multiple sets of the second limiting component and the end of the first limiting component are arranged in a circumferential ring to support the outer periphery of the shaft.

[0006] Preferably, the frame is movably connected to a positioning member, which has two states: State 1: the positioning member is rotated and stored inside the frame, and the positioning member partially extends out of the frame and restricts the movement of the first limiting component.

[0007] Preferably, there are two positioning elements, which are respectively distributed on both sides of the first limiting component.

[0008] Preferably, the first limiting component and multiple sets of the second limiting components are located in the same vertical plane.

[0009] Preferably, the end of the first limiting component is rotatably connected to a first limiting wheel, and the end of the second limiting component is rotatably connected to a second limiting wheel, wherein the rotation axis of the first limiting wheel and the rotation axis of the second limiting wheel are parallel.

[0010] Preferably, the first limiting component includes a limiting frame and a first adjusting rod. The limiting frame is horizontally rotatably connected to the supporting plane of the frame. The first adjusting rod is slidably connected to the limiting frame toward the second limiting component. The first limiting wheel is rotatably connected to the end of the first adjusting rod near the second limiting component. The displacement of the first adjusting rod is controlled by an adjusting knob.

[0011] Preferably, the frame is fixedly connected to a workbench, the workbench is set at an angle to the horizontal plane, and the workbench is slidably connected to a support platform.

[0012] Preferably, the worktable is fixedly provided with a positioning block, and the positioning block is movably connected with a drive pin, which is used to lock the worktable to the machine tool.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] (1) Operators can use the first limit component to horizontally rotate to release the restriction on the internal shaft of the center frame. The horizontal rotation path is relatively short and is carried out in one plane, which makes it easier for operators to control the speed and force of rotation. When rotating horizontally, operators can stand or adopt other comfortable postures to operate, reducing physical fatigue caused by bending or squatting for a long time.

[0015] (2) When the positioning part extends out of the frame, it will contact the first limiting component and exert a limiting effect to prevent the first limiting component from moving or rotating further. The positioning part helps to prevent equipment damage or safety accidents caused by misoperation or external interference, improves the accuracy and reliability of processing, and ensures the quality and performance of the final product. When the positioning part rotates and is stored in the frame, the first limiting component can rotate freely horizontally, making it convenient for operators to take out the shaft. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of a central frame according to the present invention;

[0018] Figure 2 This is a front view of a central frame according to the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first limiting component described in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 11. Chamber; 12. Positioning component; 13. Mounting slot; 14. Support plane; 2. First limiting assembly; 21. Limiting frame; 22. First adjusting rod; 23. First limiting wheel; 24. Adjusting knob; 3. Second limiting assembly; 31. Second adjusting rod; 32. Control knob; 33. Second limiting wheel; 34. Support rod; 35. Third adjusting rod; 4. Worktable; 41. Positioning block; 42. Drive pin; 5. Bearing platform. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figure 1 and Figure 2As shown, a center frame is used to provide auxiliary support for the axis, provide additional support force for the shaft, and facilitate operation by the operator after processing. It includes a frame body 1 with a horizontally arranged support plane 14. A first limiting component 2 and a second limiting component 3 are movably connected to the frame body 1. The first limiting component 2 is horizontally rotatably connected to the support plane 14 of the frame body 1, allowing the operator to easily rotate the first limiting component 2 horizontally, reducing the operator's workload.

[0026] The second limiting component 3 is provided in multiple sets. The multiple sets of second limiting components 3 cooperate with the first limiting component 2 and abut against the outer periphery of the support shaft. Specifically, the ends of the multiple sets of second limiting components 3 and the end of the first limiting component 2 are arranged in a circular ring.

[0027] The main structure of the frame 1 is inclined for mounting on the side of the machine tool. Specifically, a worktable 4 is fixedly connected to the side of the frame 1 away from the support plane 14. The worktable 4 is angled to the horizontal plane, ensuring that the support plane 14 is always parallel to the horizontal plane. In this embodiment, the worktable 4 is at a 30° angle to the horizontal plane; in other embodiments, it is at a 45° angle. A support platform 5 is movably connected to the worktable 4. The support platform 5 is used for fixed connection to the machine tool (not shown in the figure). Preferably, the worktable 4 and the support platform 5 are slidably connected, with the sliding direction of the worktable 4 and the support platform 5 being the length direction of the shaft. The worktable 4 drives the frame 1 to move, which can change the support points of the first limiting component 2 and the second limiting component 3 on the frame 1 for the shaft, to accommodate shafts of different lengths and provide stable support for the shaft.

[0028] The worktable 4 is fixedly provided with a positioning block 41, and a drive pin 42 is movably connected to the positioning block 41. The drive pin 42 passes through the positioning block 41 for fixed connection with the machine tool, so that the worktable 4 and the machine tool maintain a stable connection state and avoid the risk of the worktable 4 shaking when the machine tool processes the shaft.

[0029] like Figures 1 to 3 As shown, the frame 1 has a recessed cavity 11 that supports the shaft. The support points of the second limiting component 3 and the first limiting component 2 converge within the cavity 11, providing support and limiting for the shaft within the cavity 11. Specifically, the first limiting component 2 includes a limiting frame 21 and a first adjusting rod 22. The limiting frame 21 is rotatably connected to the support plane 14 of the frame 1. The limiting frame 21 is rotatably connected to the frame 1 via a vertically arranged pivot, allowing the operator to easily rotate the limiting frame 21. Preferably, the limiting frame 21 is curved. When the limiting frame 21 bends towards the cavity 11, it smoothly transitions with the inner wall of the cavity 11 to further form space for supporting the shaft. The first adjusting rod 22 is slidably connected to the curved portion of the limiting frame 21. The first adjusting rod 22 moves towards the second limiting component 3 to limit the top of the outer periphery of the shaft.

[0030] The first adjusting rod 22 is rotatably connected to the end of the second limiting component 3. The first limiting wheel 23 rolls against the shaft. That is, the rotation axis of the first limiting wheel 23 is parallel to the rotation axis of the shaft, thereby reducing the wear of the shaft.

[0031] Preferably, an adjustment knob 24 is provided at the end of the first adjusting rod 22 away from the first limiting wheel 23. The adjustment knob 24 is threadedly connected to the limiting frame 21, and the adjustment knob 24 is rotatably connected to the first adjusting rod 22. The end of the first adjusting rod 22 is fastened to the end of the adjustment knob 24. The adjustment knob 24 is rotated to control the length of the first adjusting rod 22 extending out of the limiting frame 21, so as to ensure that the first limiting wheel 23 can accurately abut against the shaft. On the one hand, this can ensure the accuracy of the limiting of the shaft, and on the other hand, it can adapt to shafts of different diameters.

[0032] The frame 1 is movably connected to a positioning member 12, which has two states. State 1: The positioning member 12 is rotated and stored inside the frame 1, and part of the positioning member 12 extends out of the frame 1 and restricts the movement of the first limiting component 2. Specifically, the frame 1 is provided with a mounting groove 13, which is recessed from the support plane 14 toward the interior of the frame 1 to accommodate the positioning member 12.

[0033] Preferably, when the limiting frame 21 is in the state of limiting the shaft, each of the frame bodies 1 on both sides of the limiting frame 21 is provided with a mounting groove 13, and at least one positioning member 12 is interactively connected in each mounting groove 13. More preferably, one positioning member 12 is rotatably connected in one mounting groove. Specifically, the positioning member 12 includes a rotating end and a free end. The rotating end is rotatably connected to the frame body 1, and the free end is retracted into the mounting groove 13 or extends out of the mounting groove and abuts against the side wall of the limiting frame 21 as the rotating end rotates. The two positioning elements 12 have multiple limiting states for the limiting frame 21. When both positioning elements 12 are housed in the mounting groove 13, the limiting frame 21 can rotate freely on the horizontal plane. When one positioning element 12 is housed in the mounting groove 13 and the other positioning element 12 abuts against the limiting frame 21, the limiting frame 21 can rotate in one direction and can only rotate one revolution. When the two positioning elements 12 abut against the two sides of the limiting frame 21, the limiting frame 21 and the frame 1 are in a stable relative static state, ensuring that the limiting frame 21 can stably limit the shaft.

[0034] In this embodiment, there are two sets of second limiting components 3. The ends of both sets of second limiting components 3 are located inside the chamber 11. The two sets of second limiting components 3 are on the same vertical plane as the first limiting component 2. The extension line of the second limiting component 3 intersects the extension line of the first limiting component 2 at a point located on the central axis of the shaft.

[0035] Specifically, one of the second limiting components 3 includes a second adjusting rod 31, which is movably connected to the frame 1. Preferably, the second adjusting rod 31 is slidably connected to the frame 1. One end of the second adjusting rod 31 located outside the chamber 11 is provided with a control knob 32, and the other end of the second adjusting rod 31 is located inside the chamber 11. The second adjusting rod 31 controls the feed length of the second adjusting rod 31 in the chamber 11 through the control knob 32.

[0036] Another second limiting component 3 includes a support rod 34 and a third adjusting rod 35. The support rod 34 is rotatably connected to the frame 1, and its end is located inside the chamber 11. The third adjusting rod 35 is threadedly connected to the frame 1, and its end abuts against the support rod 34 to control the rotation of the support rod 34. Both the end of the support rod 34 inside the chamber 11 and the end of the second adjusting rod 31 inside the chamber 11 are rotatably connected to second limiting wheels 33. The rotation axes of the two second limiting wheels 33 are parallel to the rotation axis of the first limiting wheel 23, and both are rollingly connected to the shaft. The two second limiting wheels 33 and the first limiting wheel 23 are triangularly distributed to evenly support the shaft.

[0037] In this embodiment, limiting blocks protrude from both sides of the support rod 34. Correspondingly, a limiting groove is provided in the frame. Specifically, the limiting groove is an arc-shaped groove, and the limiting block is located in the limiting groove. When the third adjusting rod 35 controls the support rod 34, the limiting block slides in the limiting groove. The limiting groove restricts the movement range of the limiting block, thereby limiting the rotation range of the support rod 34. On the one hand, this prevents the support rod 34 and the third adjusting rod 35 from losing their supporting function after disengagement. On the other hand, it limits the movement range of the support rod 34, thereby reducing the risk of the support rod 34 slipping off.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A central frame, characterized in that, include: The frame (1) is provided with a horizontally arranged support plane (14); The first limiting component (2) is horizontally rotatably connected to the support plane (14) of the frame (1); The second limiting component (3) is provided in multiple sets. The multiple sets of the second limiting components (3) are adjustablely connected to the frame (1). The ends of the multiple sets of the second limiting components (3) and the ends of the first limiting component (2) are arranged in a circumferential ring to support the outer periphery of the shaft.

2. A center frame according to claim 1, characterized in that: The frame (1) is movably connected to a positioning component (12). The positioning component (12) has two states. State 1: The positioning component (12) rotates and is stored inside the frame (1). The positioning component (12) partially extends out of the frame (1) and restricts the movement of the first limiting component (2).

3. A center frame according to claim 2, characterized in that: There are two positioning elements (12), which are respectively distributed on both sides of the first limiting component (2).

4. A center frame according to claim 1, characterized in that: The first limiting component (2) and multiple sets of the second limiting components (3) are located in the same vertical plane.

5. A center frame according to claim 1, characterized in that: The end of the first limiting component (2) is rotatably connected to a first limiting wheel (23), and the end of the second limiting component (3) is rotatably connected to a second limiting wheel (33). The rotation axis of the first limiting wheel (23) and the rotation axis of the second limiting wheel (33) are parallel.

6. A center frame according to claim 5, characterized in that: The first limiting component (2) includes a limiting frame (21) and a first adjusting rod (22). The limiting frame (21) is horizontally rotatably connected to the support plane (14) of the frame (1). The first adjusting rod (22) is slidably connected to the limiting frame (21) toward the second limiting component (3). The first limiting wheel (23) is rotatably connected to the end of the first adjusting rod (22) near the second limiting component (3). The displacement of the first adjusting rod (22) is controlled by the adjusting knob (24).

7. A center frame according to claim 1, characterized in that: The frame (1) is fixedly connected to a workbench (4), which is set at an angle to the horizontal plane, and the workbench (4) is slidably connected to a support platform (5).

8. A center frame according to claim 7, characterized in that: The worktable (4) is fixedly provided with a positioning block (41), and the positioning block (41) is movably connected with a drive pin (42), which is used to lock the worktable (4) to the machine tool.

Images