Central frame with built-in channel
The center rest with built-in channel design solves the problems of uneven cooling and iron filings in traditional center rests, achieving uniform cooling and cleaning of the workpiece surface, and improving processing stability and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-06
AI Technical Summary
The traditional external hose layout of the center frame leads to uneven cooling, iron filings residue, and equipment interference, affecting processing stability and yield.
The design incorporates a central support with built-in channels, enabling precise cooling and cleaning of the workpiece through the first and second channels, thus avoiding the interference risks associated with externally mounted hoses.
It achieves uniform cooling and cleaning of the workpiece surface, improves processing stability and yield, and reduces the risk of equipment failure.
Smart Images
Figure CN223971235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of center frame technology, and in particular to a center frame with built-in channels. Background Technology
[0002] In the field of metal processing, the center rest plays a crucial role as a key clamping device in the turning of shaft parts. However, the high temperatures generated on the workpiece surface due to high-speed friction during machining can easily lead to thermal deformation and residual stress in the material. Simultaneously, the iron filings produced during cutting pose a risk of scratching the machined surface or causing equipment malfunction. Traditional external hose air blowing or water injection cooling solutions have significant limitations: open-type air blowing or water injection makes it difficult to precisely control the airflow or water flow direction and coverage, resulting in uneven cooling and iron filings. Furthermore, the external hose layout is prone to interference with moving parts of the machine tool, increasing maintenance frequency. In addition, hoses are prone to aging and cracking under high-temperature environments, posing a risk of coolant leakage, further affecting machining stability and yield. Utility Model Content
[0003] The purpose of this invention is to provide a center frame with a built-in channel to solve the problem in the prior art where the external placement of the cooling and cleaning hoses on the center frame reduces product quality.
[0004] The technical solution of this utility model is: a central frame with a built-in channel, comprising: a frame body and a pair of claw bodies rotatably connected to the frame body, the two claw bodies rotating in opposite directions to clamp workpieces, the claw bodies having a first shaft hole, a second shaft hole and a first channel, the input end of the first channel communicating with the first shaft hole, the first channel bypassing the second shaft hole, and the output end of the first channel being disposed towards the other claw body.
[0005] Preferably, the first channel includes a first pipe, a second pipe, and a third pipe, all of which are straight. The first pipe is connected to the first shaft hole, the output end of the third pipe is oriented toward another claw body, the second pipe is connected to the first pipe and the second pipe, and the first pipe, the second pipe, and the third pipe are angled around the second shaft hole.
[0006] Preferably, the claw body has a first protrusion and a second protrusion at the end away from the frame, with a gap between the first protrusion and the second protrusion. The second shaft hole is opened in the first protrusion, and the second protrusion has a third shaft hole coaxial with the second shaft hole. The claw body is rotatably connected to a roller through the second shaft hole and the third shaft hole.
[0007] Preferably, the claw body is provided with a second channel, one end of which is connected to the first shaft hole, and the other end of which is connected to the second shaft hole and / or the third shaft hole.
[0008] Preferably, the first pipe is connected to the outside in a straight line, and one end of the second pipe is connected to the first pipe and the other end is connected to the outside. Both the end of the first pipe connected to the outside and the end of the second pipe connected to the outside are sealed with pins.
[0009] Preferably, the second channel is arranged in a straight line, passes through the third shaft hole, and communicates with the outside. The end of the second channel that communicates with the outside is sealed by a pin.
[0010] Preferably, the first pipe, the second pipe, and the third pipe are located in the same plane.
[0011] Compared with the prior art, the advantages of this utility model are: it can directly and accurately spray cleaning gas or cooling medium onto the surface of the workpiece, ensuring uniform coverage of cooling and cleaning, avoiding uneven local cooling or iron filings residue; the first channel is built into the claw body, avoiding the risk of interference between the traditional external hose and the moving parts of the center frame, improving the stability and safety of the center frame operation, thereby improving the product yield. Attached Figure Description
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0013] Figure 1 This is a schematic diagram of the internal structure of a central frame with a built-in channel according to the present invention;
[0014] Figure 2 This is a schematic diagram of the structure of a central frame with an internal channel according to the present invention;
[0015] Figure 3 This is a schematic diagram of the claw body described in this utility model;
[0016] Figure 4 This is a cross-sectional view of the first channel described in this utility model.
[0017] Figure 5 This is a cross-sectional view of the second channel described in this utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1. Claw body; 11. First shaft hole; 12. Second shaft hole; 13. Third shaft hole; 14. Guide surface; 15. First protrusion; 16. Second protrusion; 2. Frame; 3. First channel; 31. First pipe; 32. Second pipe; 33. Third pipe; 4. Second channel; 5. Drive component; 6. Roller; 7. Workpiece. Detailed Implementation
[0020] 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.
[0021] 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.
[0022] 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.
[0023] like Figure 1 and Figure 2 As shown, a central frame with a built-in channel cleans and lowers the workpiece 7 while clamping it. It includes a frame body 2 and a pair of claw bodies 1. The two claw bodies 1 are rotatably connected to the frame body 2 for clamping the workpiece 7.
[0024] The claw body 1 has a first shaft hole 11 located near the center of the claw body 1. The first shaft hole 11 is rotatably connected to a first rotating shaft. The claw body 1 is rotatably connected to the frame body 2 via the first rotating shaft. The frame body 2 has a cavity inside. The first rotating shaft rotates near the edge of the frame body 2. Part of the claw body 1 rotates inside the cavity of the frame body 2, while the other part rotates outside the frame body 2. The two claw bodies 1 are symmetrically arranged and can rotate synchronously relative to each other or in opposite directions. When the two claw bodies 1 rotate relative to each other, they clamp the workpiece 7. When the two claw bodies 1 rotate in opposite directions, the workpiece 7 is released from the central frame.
[0025] A drive component 5 is slidably connected inside the central frame. The drive component 5 is located between the two claw bodies 1. The two claw bodies 1 are provided with guide surfaces 14 on their sides facing the drive component 5. The guide surfaces 14 abut against the outer surface of the drive component 5. When the drive component 5 extends outward toward the central frame, it forces the two claw bodies 1 to close. When the drive component 5 moves inward toward the central frame, it forces the two claw bodies 1 to open.
[0026] like Figure 3 and Figure 4 As shown, in this embodiment, the claw body 1 has a first channel 3 and a second shaft hole 12. The input end of the first channel 3 is connected to the first shaft hole 11, and the output end is connected to the outside. The output end of the first channel 3 is set towards another claw body 1, that is, the output end of the first channel 3 is set towards the workpiece 7. Cleaning gas or cleaning water is introduced into the first channel 3 to cool the workpiece 7 and remove iron filings from the surface of the workpiece 7. In other embodiments, multiple branch channels are added to the first channel 3. The output ends of the branch channels are all set towards the workpiece 7, but the branch channels are set at an angle so that the cleaning gas or cleaning water can be sprayed out from different angles, covering a larger surface of the workpiece 7 and improving the cleaning effect.
[0027] The second shaft hole 12 is opened on the part of the claw body 1 located outside the frame 2. The rotation axis of the second shaft hole 12 is parallel to the rotation axis of the first shaft hole 11. The first channel 3 is arranged to bypass the second shaft hole 12, that is, to prevent the first channel 3 from communicating with the second shaft hole 12.
[0028] Specifically, the first channel 3 includes a first pipe 31, a second pipe 32, and a third pipe 33. All three pipes are straight channels, connected sequentially. The first pipe 31 connects to the first shaft hole 11, and the output end of the third pipe 33 faces the workpiece 7. More preferably, the first pipe 31, second pipe 32, and third pipe 33 are on the same plane. In this embodiment, the first pipe 31 is a through hole connecting the first shaft hole 11 to the outside. One end of the second pipe 32 connects to the first pipe 31, and the other end connects to the outside. The outlets of both the first pipe 31 and the second pipe 32 are fixed and sealed with pins, allowing the first channel 3 to flow unidirectionally. The straight channel design reduces the need for bends and complex structures, lowering the processing difficulty and cost of the first pipe 31, second pipe 32, and third pipe 33 bypassing the second shaft hole 12.
[0029] The claw body 1 has a first protrusion 15 and a second protrusion 16 at the end away from the frame 2, with a gap between the first protrusion 15 and the second protrusion 16. A second shaft hole 12 is formed in the first protrusion 15, and the second protrusion 16 has a third shaft hole 13 coaxial with the second shaft hole 12. The claw body 1 is rotatably connected to a roller 6 via the second shaft hole 12 and the third shaft hole 13 through a rotating shaft. The diameter of the roller 6 protrudes from the claw body 1, and the roller 6 is constructed as a cylinder. The outer circumference of the roller 6 rolls and abuts against the workpiece 7 to reduce the contact area between the center frame and the workpiece 7.
[0030] like Figure 5As shown, the claw body 1 is provided with a second channel 4. One end of the second channel 4 is connected to the first shaft hole 11, and the other end is connected to the second shaft hole 12 and / or the third shaft hole 13. In this embodiment, the second channel 4 and the third shaft hole 13 are connected. Lubricating oil is introduced into the second channel 4 to lubricate the roller 6. The lubricating oil forms an oil film between the roller 6 and the shaft hole, which separates the directly contacting metal surfaces, thereby significantly reducing friction and wear, and extending the service life of the roller 6 and the shaft hole.
[0031] Preferably, the second channel 4 is a straight channel, and after passing through the third shaft hole 13, it connects to the outside, thereby reducing the molding difficulty of the second channel 4 and thus reducing production costs. The part of the third shaft hole 13 that connects to the outside is blocked by a pin, that is, the second channel 4 only connects between the first shaft hole 11 and the third shaft hole 13, which reduces the manufacturing difficulty of the second channel 4 on the one hand, and ensures that the roller 6 can be effectively lubricated on the other hand.
[0032] Both the first channel 3 and the second channel 4 are integrated within the central frame, achieving functional integration, making the overall structure more compact, reducing the number of external components, avoiding the complex arrangement of functions achieved through external hoses, and making the appearance of the central frame simpler. This also reduces interference problems caused by external hoses on the central frame, improving product yield. The built-in channels prevent leakage or breakage problems that may occur due to wear, aging, or external force damage to external hoses, improving the safety of equipment operation.
[0033] 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 with built-in passage, characterized in that, The utility model relates to a kind of clamping devices, including: Frame body (2) and the claw body (1) of the pair of rotation connection in frame body (2), two described claw body (1) rotate to the workpiece (7) in opposite directions to be clamped, the claw body (1) is equipped with first shaft hole (11), second shaft hole (12) and first passage (3), the input end of the first passage (3) is communicated first shaft hole (11), the first passage (3) bypasses second shaft hole (12), the output end of the first passage (3) is arranged towards another described claw body (1).
2. A center hanger with a built-in channel according to claim 1, characterized in that: The first passage (3) includes first pipeline (31), second pipeline (32) and third pipeline (33) that are all linear, the first pipeline (31) is communicated with the first shaft hole (11), the output end of the third pipeline (33) is arranged towards another claw body (1), the second pipeline (32) is communicated the first pipeline (31) and the second pipeline (32), the first pipeline (31), second pipeline (32) and third pipeline (33) bypass the second shaft hole (12).
3. A center hanger with a built-in channel according to claim 1, characterized in that: The claw body (1) is equipped with first protruding block (15) and second protruding block (16) away from the one end of frame body (2), and the first protruding block (15) and the second protruding block (16) are spaced, and the second shaft hole (12) is arranged in the first protruding block (15), and the second protruding block (16) is equipped with third shaft hole (13) coaxial with the second shaft hole (12), and the claw body (1) is rotatably connected with the roller (6) by the second shaft hole (12) and the third shaft hole (13).
4. A center hanger with a built-in channel according to claim 3, characterized in that: The claw body (1) is equipped with second passage (4), one end of the second passage (4) is communicated with the first shaft hole (11), and the other end is communicated with the second shaft hole (12) and / or the third shaft hole (13).
5. A center hanger with a built-in channel according to claim 2, characterized in that: The first pipeline (31) is communicated with the outside along linear direction, one end of the second pipeline (32) is communicated with the first pipeline (31), and the other end is communicated with the outside, and the end of the first pipeline (31) communicated with the outside and the end of the second pipeline (32) communicated with the outside are all blocked by plug pin.
6. A center hanger with a built-in channel according to claim 4, characterized in that: The second passage (4) is linearly arranged through third shaft hole (13) and is communicated with the outside, and the end of the second passage (4) communicated with the outside is blocked by plug pin.
7. A center hanger with a built-in channel according to claim 2, wherein: The first pipeline (31), the second pipeline (32) and the third pipeline (33) are located in the same plane.