Center frame

Abstract

The utility model relates to the technical field of center frames, in particular to a center frame which comprises a frame body and a middle arm, the middle arm is connected into the frame body in a sliding mode, the frame body is connected with a first claw body and a second claw body in a rotating mode, the first claw body and the second claw body abut against the two opposite sides of the middle arm, and a hose is arranged in the frame body. One end of the hose penetrates through the frame body to communicate with the outside, the other end of the hose communicates with the middle arm, and in the process that the middle arm drives the first claw body and the second claw body to rotate, the hose is kept in a bent state. The flexible bending characteristic of the hose can be adaptively adjusted along with the telescopic movement of the middle arm, so that the movement stroke of the middle arm, the first claw body and the second claw body is not limited, the leakproofness of a pipeline system is always kept, and the problem that an opening of a traditional lubricating groove is exposed due to stroke overrun is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of center frames, and in particular to a center frame. Background Technology

[0002] In the field of machining, the center rest is an important auxiliary device for supporting long shaft workpieces, and its performance directly affects machining accuracy and stability. Traditional center rests typically adopt a sliding center arm structure, achieving continuous lubrication of moving parts by creating lubrication grooves inside the center arm.

[0003] While lubrication grooves meet basic lubrication needs to a certain extent, they have significant technical defects in actual use: when the arm moves beyond the preset stroke range during equipment operation, the originally closed lubrication groove will be exposed to the external environment, causing lubricating oil to leak from the groove opening, resulting in the loss of lubricating medium. The sliding contact surface cannot form a complete oil film protection, which easily generates dry friction under high-speed movement or heavy load conditions, accelerating the wear of moving parts and seriously affecting the service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a center frame to solve the problem of oil leakage in the lubrication tank in the prior art.

[0005] The technical solution of this utility model is: a central frame, including: a frame body and a central arm, the central arm being slidably connected to the frame body, the frame body being rotatably connected to a first claw body and a second claw body, the first claw body and the second claw body abutting against opposite sides of the central arm, the frame body being provided with a flexible tube, one end of the flexible tube passing through the frame body and communicating with the outside, and the other end communicating with the central arm, the flexible tube maintaining a bent shape when the central arm drives the first claw body and the second claw body to rotate.

[0006] Preferably, the middle arm includes a first wingspan, a second wingspan, and a rod. The first wingspan and the second wingspan are fixed on both sides of the rod. One of the first wingspan and the second wingspan is slidably connected to the first claw body, and the other is slidably connected to the second claw body. The hose connects the rod to the joint between the rod and the frame through the first wingspan and / or the second wingspan.

[0007] Preferably, one end of the hose is connected to the side wall of the first wingspan, and the other end of the hose is connected to the inner side wall of the frame facing the side wall of the first wingspan.

[0008] Preferably, at least one side of the rod is in contact with the frame, a first channel is provided in the first wing section, a second channel is provided in the rod, the input end of the first channel is connected to the output end of the hose, the output end of the first channel is connected to the input end of the second channel, and the output end of the second channel faces the contact surface of the frame to deliver lubricant between the frame and the rod.

[0009] Preferably, the first wing section is provided with a third channel, one end of which is connected to the second channel and the other end is connected to the interior of the frame.

[0010] Preferably, the output end of the second channel is provided with a sealing element, and the sealing element has a through hole that connects the first channel and the second channel.

[0011] Preferably, the rod portion is provided with a fourth channel, one end of which is connected to the second channel, and the other end extends in a direction away from the first wing span.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] The middle arm is lubricated through a hose that directly connects the lubrication source to the friction pair, ensuring precise delivery of lubricating oil. The flexible bending characteristics of the hose can adaptively adjust with the extension and retraction of the middle arm, thus not restricting the movement stroke of the middle arm, the first claw, and the second claw, and always maintaining the airtightness of the pipeline system, avoiding the problem of opening exposure caused by excessive stroke in traditional lubrication grooves. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the internal structure of the central frame described in this utility model;

[0016] Figure 2 This is a schematic diagram of the first housing and the middle arm described in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first channel and the third channel described in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first channel and the second channel described in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the fourth channel described in this utility model.

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

[0021] 1. Frame; 11. Chamber; 12. First shell; 13. Second shell; 14. Slide groove; 2. Middle arm; 21. Rod; 211. Second channel; 212. Fourth channel; 22. First wingspan; 221. First channel; 222. Third channel; 23. Second wingspan; 24. First inclined plane; 25. Second inclined plane; 26. Seal; 3. First claw body; 4. Second claw body; 5. Hose. 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 includes a frame body 1 and a center arm 2. The frame body 1 has a built-in chamber 11, and the center arm 2 is slidably connected to the chamber 11 of the frame body 1. The frame body 1 is rotatably connected to a first claw body 3 and a second claw body 4, which abut against opposite sides of the center arm 2. The first claw body 3 and the second claw body 4 rotate under the drive of the center arm 2 to clamp the workpiece. A flexible hose 5 is provided inside the frame body 1. One end of the flexible hose 5 passes through the frame body 1 and communicates with the outside, and the other end is connected to the center arm 2. The input end of the flexible hose 5 is connected to an oil pump to lubricate the center arm 2. During the rotation of the center arm 2, the flexible hose 5 maintains a bent shape, thereby avoiding the influence of the flexible hose 5 on the opening and closing degree of the first claw body 3 and the second claw body 4, ensuring that the first claw body 3 and the second claw body 4 can have sufficient opening and closing degree while lubricating the center arm 2.

[0026] The frame 1 includes a first shell 12 and a second shell 13, both of which are configured as approximately plate-like structures. The first shell 12 and the second shell 13 are fastened together, forming a cavity 11 inside. The first shell 12 is provided with a sliding groove 14 along a first direction. The middle arm 2 partially fits into the sliding groove 14 and slides along the length direction of the sliding groove 14. In this embodiment, one side wall of the middle arm 2 fits into the bottom surface of the sliding groove 14, the side of the middle arm 2 connecting to the first claw 3 partially fits into one side wall of the sliding groove 14, and the side of the middle arm 2 connecting to the second claw 4 partially fits into the other side wall of the sliding groove 14.

[0027] The first claw body 3 is partially located inside the cavity 11 of the frame 1 and partially located outside the frame 1. The second claw body 4 is partially located inside the cavity 11 of the frame 1 and partially located outside the frame 1. When the arm 2 slides out of the frame 1 along the first direction, the first claw body 3 and the second claw body 4 close. When the arm 2 slides inside the frame 1 along the first direction, the first claw body 3 and the second claw body 4 open.

[0028] like Figure 2 As shown, the middle arm 2 includes a pole 21, a first wingspan 22, and a second wingspan 23. The pole 21 is constructed as a long strip with a rectangular cross-section. The first wingspan 22 and the second wingspan 23 are respectively fixed to the two sides of the pole 21, and the first wingspan 22 and the second wingspan 23 are located at the same height.

[0029] The first wing segment 22 has a first inclined surface 24 recessed within it, and the end of the first claw body 3 abuts against the first wing segment 22. The second wing segment 23 has a second inclined surface 25 recessed within it, and the end of the second claw body 4 abuts against the second wing segment 23. Preferably, the end faces of the first claw body 3 and the second claw body 4 are both arc surfaces, and the first inclined surface 24 and the second inclined surface 25 are symmetrically arranged, so that the first claw body 3 and the second claw body 4 can rotate synchronously.

[0030] The hose 5 connects to the rod portion 21 via the first wingspan portion 22 and / or the second wingspan portion 23 to lubricate the rod portion 21. In this embodiment, one end of the hose 5 is connected to an external oil pump, and the other end is connected to the first wingspan portion 22. In other embodiments, two hoses 5 may be used to connect the first wingspan portion 22 and the second wingspan portion 23 respectively. One end of the hose 5 is connected to the side wall of the first wingspan portion 22, and the other end of the hose 5 is connected to the inner side wall of the frame 1 facing the side wall of the first wingspan portion 22. That is, the hose 5 is located on the side of the first wingspan portion 22 near the first housing 12 to avoid interference between the hose 5 and the first claw body 3 during operation, and to shorten the length of the hose 5, reducing the risk of damage to the hose 5.

[0031] like Figure 3 and Figure 4 As shown, a first channel 221 is provided inside the first wing section 22, and a second channel 211 is provided inside the rod section 21. The input end of the first channel 221 is connected to the output end of the hose 5, and the output end of the first channel 221 is connected to the input end of the second channel 211. A receiving hole is provided in the rod body, which is coaxial with the input end of the second channel 211. The diameter of the receiving hole is larger than the diameter of the input end of the second channel 211. A sealing element 26 is fixed inside the receiving hole. In this embodiment, the sealing element 26 is a sealing ring, that is, the sealing element 26 has a through hole that passes through the first channel 221 and the second channel 211. The sealing element 26 improves the tightness of the connection between the first channel 221 and the second channel 211 and reduces oil leakage from the connection.

[0032] In this embodiment, the second channel 211 is an "L"-shaped channel. The bend in the second channel 211 causes its output direction to be at an angle to the second channel 211. The output end of the second channel 211 leads to the slide groove 14, meaning that the lubricating oil output from the second channel 211 lubricates the contact surface between the frame 1 and the rod 21. The second channel 211 directly lubricates the contact surface, reducing lubricating oil waste and improving lubrication efficiency.

[0033] Preferably, the first wing section 22 is provided with a third channel 222, which is connected to the first channel 221 and the other end is connected to the internal cavity 11 of the frame 1. Excess oil is introduced into the internal cavity 11 of the frame 1 to relieve pressure on the first channel 221, so as to avoid sealing failure, leakage or oil passage rupture due to excessive oil pressure, and to prevent excessive oil pressure in the first channel 221. After pressure relief, it can ensure that the lubricating oil adheres smoothly to the friction surface and forms an effective lubricating film. After pressure equalization, the lubricating oil flow is more controllable, so that there is no waste due to high pressure or insufficient lubrication due to low pressure.

[0034] like Figure 5As shown, the rod has a fourth channel 212, one end of which is connected to the second channel 211, and the other end of which extends along a first direction away from the first wingspan 22. A roller (not shown) is rotatably connected to the rod 21 to rotate and position the workpiece. The fourth channel 212 connects the roller to the connection point of the rod 21 to lubricate the roller.

[0035] In other embodiments, the first wingspan 22 is provided with a fifth channel (not shown in the figure), the output end of the fifth channel is connected to the first inclined surface 24, and the output end of the fifth channel is located on the moving path of the first claw body 3. The output end of the fifth channel lubricates the first claw body 3, thereby reducing the friction between the first claw body 3 and the first wingspan 22.

[0036] 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 center mount characterized by, The utility model relates to a kind of lubricating device, including: Frame body (1) and middle arm (2), the middle arm (2) is slidably connected in the frame body (1), the frame body (1) is rotatably connected with first claw body (3) and second claw body (4), the first claw body (3) and the second claw body (4) are abutted on the opposite sides of the middle arm (2), the frame body (1) is equipped with hose (5), one end of the hose (5) passes through the frame body (1) and is communicated with outside, the other end is communicated in the middle arm (2), when the middle arm (2) drives the first claw body (3) and second claw body (4) rotate in the process, the hose (5) keeps bending form.

2. A center mount according to claim 1, wherein: The middle arm (2) includes first wingspan (22), second wingspan (23) and stem (21), the first wingspan (22) and the second wingspan (23) are fixed on the two sides of the stem (21), one of the first wingspan (22) and the second wingspan (23) is slidably connected with the first claw body (3), and the other is slidably connected with the second claw body (4), the hose (5) is communicated with the fitting place of the stem (21) and frame body (1) by the first wingspan (22) and / or the second wingspan (23).

3. A center mount according to claim 2, wherein: One end of the hose (5) is communicated with the side wall of the first wingspan (22), and the other end of the hose (5) is communicated with the inner side wall of the side wall of the frame body (1) towards the first wingspan (22).

4. A center mount according to claim 2, wherein: The stem (21) is at least one side and the frame body (1) is fitted, the first wingspan (22) is equipped with first channel (221), the stem (21) is equipped with second channel (211), the input end of the first channel (221) is communicated with the output end of the hose (5), the output end of the first channel (221) is communicated with the input end of the second channel (211), the output end of the second channel (211) is towards the fitting surface of the frame body (1), to transport lubricant between the frame body (1) and the stem (21).

5. A center mount according to claim 4, wherein: The first wingspan (22) is equipped with third channel (222), one end of the third channel (222) is communicated with the second channel (211), and the other end is communicated with the inside of the frame body (1).

6. A center mount according to claim 4, wherein: The output end of the second channel (211) is equipped with sealing element (26), the sealing element (26) is penetrated with through hole that communicates first channel (221) and the second channel (211).

7. A center mount according to claim 4 wherein: The stem (21) is equipped with fourth channel (212), one end of the fourth channel (212) is communicated with the second channel (211), and the other end extends towards the direction away from the first wingspan (22).

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