Multi-station clamp and milling machine tool

Abstract

The utility model provides a multi-station clamp which is arranged on a machine tool and used for clamping a workpiece for milling, and the multi-station clamp further comprises a base which is arranged on the machine tool and rotatably connected with the machine tool; the clamping assembly comprises a fixing piece and a plurality of clamping pieces, the fixing piece is arranged on the side, away from the machine tool, of the base and fixedly connected with the base, and the fixing piece extends outwards from the geometric center to form a plurality of fixing parts; each clamping piece is connected with the corresponding fixing part in a sliding mode, and a gap is formed between each clamping piece and the corresponding fixing part and used for clamping a workpiece. The utility model further provides a milling machine tool.

Description

Technical Field

[0001] The present application relates to the technical field of milling machine fixtures, and in particular to a multi-station fixture. Background Art

[0002] Milling machine fixtures play an important role in modern manufacturing. They are widely used to clamp and fix various workpieces to ensure the stability and accuracy of the workpieces during processing. Traditional milling machine fixtures mainly include flat-nose pliers, indexing heads, parallel blocks, T-slot fixtures, angle fixtures, etc. These fixtures usually have high stability and reliability and can meet the needs of most common milling processes.

[0003] In the prior art, common milling machine clamps include flat-nose pliers, dividing heads, T-slot clamps, angle clamps, etc. These clamps stabilize the workpiece to prevent the workpiece from shifting during the milling process, which can cause problems with milling accuracy. Different types have certain advantages in their respective application fields, but they are generally insufficient in meeting the demand for simultaneously clamping and processing multiple medium and large workpieces. Most traditional clamps can only clamp a single workpiece and cannot meet the demand for processing multiple workpieces at the same time, affecting production efficiency. Utility Model Content

[0004] In view of this, it is necessary to provide a fixture that can clamp multiple workpieces for processing at the same time to solve the above problems.

[0005] An embodiment of the present application provides a multi-station fixture, which is provided on a machine tool and is used to clamp a workpiece for milling. The multi-station fixture further includes:

[0006] A base, which is arranged on the machine tool and is rotatably connected to the machine tool;

[0007] A clamping assembly, comprising a fixing member and a plurality of clamping members, wherein the fixing member is disposed on a side of the base away from the machine tool and is fixedly connected to the base, and the fixing member extends outward from a geometric center to form a plurality of fixing portions;

[0008] Each of the clamping members is slidably connected to each of the fixing portions, and a gap is formed between each of the clamping members and each of the fixing portions for clamping the workpiece.

[0009] In at least one embodiment of the present application, one end of each of the fixing portions is annularly arranged on the fixing member along the circumference of the fixing member;

[0010] The fixing member is provided with a through hole penetrating the fixing portion, and the clamping member is threadedly connected to the fixing portion for adjusting the size of the gap.

[0011] In at least one embodiment of the present application, midlines of two adjacent fixing portions along their respective extension directions are perpendicular to each other, and each fixing portion further includes a fixing surface and a limiting surface;

[0012] The fixing surface, the limiting surface and the clamping member enclose the gap, the fixing surface fixes the workpiece, and the limiting surface abuts against one end of the workpiece.

[0013] In at least one embodiment of the present application, the fixing surface of each fixing portion is parallel to the limiting surface;

[0014] The fixing surfaces of two adjacent fixing parts are perpendicular to the limiting surface.

[0015] In at least one embodiment of the present application, the fixing portion further includes an inclined surface, and the inclined surface is inclined from one end of the limiting surface along a side close to the fixing surface.

[0016] In at least one embodiment of the present application, the clamping member includes a recessed portion and a raised portion, and a side of the clamping member close to the fixing portion is recessed inwardly and formed in the recessed portion;

[0017] The protrusions are symmetrically arranged at two ends of the clamping member on one side close to the fixing portion along the center of the recessed portion to increase the clamping force.

[0018] In at least one embodiment of the present application, the clamping member further includes a plurality of fixing teeth, and the plurality of fixing teeth are disposed at one end of the protruding portion close to the fixing portion, so as to increase friction.

[0019] In at least one embodiment of the present application, a plurality of the fixed teeth are arranged on the protruding portion in an equidistant array.

[0020] In at least one embodiment of the present application, the clamping assembly further includes a guide rod, the clamping member is provided with a guide groove, the guide rod is provided on a side of the fixing portion close to the clamping member, and is fixedly connected to the fixing portion;

[0021] The guide rod is directly opposite to the guide groove and is used to prevent the clamping member from shaking.

[0022] A milling machine tool comprises any one of the multi-station fixtures described above.

[0023] The multi-station fixture provided above can clamp multiple workpieces through multiple gaps formed between multiple fixing parts extending outward from the fixing part and multiple clamping parts. The rotatable connection between the base and the machine tool enables multiple workpieces to be milled. Compared with the traditional single-workpiece fixture, the multi-station fixture can clamp and process multiple workpieces at the same time, which significantly improves production efficiency. Workers do not need to frequently change and readjust the fixture, and can continuously process multiple workpieces, reducing idle time on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a multi-station fixture in this embodiment.

[0025] Figure 2 for Figure 1 An enlarged front view of the multi-station fixture.

[0026] Figure 3 for Figure 1 A three-dimensional diagram of the multi-station fixture.

[0027] Figure 4 for Figure 1 A three-dimensional diagram of the clamping parts of the multi-station clamp.

[0028] Figure 5 for Figure 4 A side view of the clamping member of the multi-station clamp.

[0029] Main component symbols

[0030] 100. A multi-station clamp; 10. A base; 20. A clamping assembly; 21. A fixing member; 211. A fixing portion; 211a. A fixing surface; 211b. A limiting surface; 211c. An inclined surface; 212. A through hole; 22. A clamping member; 221. A recessed portion; 222. A raised portion; 223. A fixing tooth; 224. A guide groove; 23. A gap; 30. A guide rod; 40. A milling cutter. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0032] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0033] An embodiment of the present application provides a multi-station fixture, which is provided on a machine tool and is used to clamp a workpiece for milling. The multi-station fixture further includes:

[0034] A base, which is arranged on the machine tool and is rotatably connected to the machine tool;

[0035] A clamping assembly, comprising a fixing member and a plurality of clamping members, wherein the fixing member is disposed on a side of the base away from the machine tool and is fixedly connected to the base, and the fixing member extends outward from a geometric center to form a plurality of fixing portions;

[0036] Each of the clamping members is slidably connected to each of the fixing portions, and a gap is formed between each of the clamping members and each of the fixing portions for clamping the workpiece.

[0037] The multi-station fixture provided above can clamp multiple workpieces through multiple gaps formed between multiple fixing parts extending outward from the fixing part and multiple clamping parts. The rotatable connection between the base and the machine tool enables multiple workpieces to be milled. Compared with the traditional single-workpiece fixture, the multi-station fixture can clamp and process multiple workpieces at the same time, which significantly improves production efficiency. Workers do not need to frequently change and readjust the fixture, and can continuously process multiple workpieces, reducing idle time on the production line.

[0038] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] See also Figure 1-Figure 5 The embodiment of the present application provides a multi-station fixture 100, which is arranged on a machine tool and is used to clamp a workpiece for milling. The multi-station fixture also includes:

[0040] The base 10 is disposed on the machine tool and is rotatably connected to the machine tool;

[0041] The clamping assembly 20 includes a fixing member 21 and a plurality of fixing members 22. The fixing member 21 is disposed on a side of the base 10 away from the machine tool and is fixedly connected to the base 10. The fixing member 21 extends outward from a geometric center to form a plurality of fixing portions 211.

[0042] Each of the clamping members 22 is slidably connected to each of the fixing portions 211 , and a gap 23 is formed between each of the clamping members 22 and each of the fixing portions 211 for clamping a workpiece.

[0043] Specifically, the base 10 serves as the basic support structure of the multi-station fixture, and its main function is to fix the entire fixture system and firmly install it on the machine tool. The rotatable connection design between the base 10 and the machine tool allows the fixture to be rotated and adjusted during the milling process to better meet the processing requirements of different workpieces. This design enables the fixture to be rotated to different angles during the processing process, so that workpieces at different positions and angles can be processed, increasing the flexibility and diversity of processing.

[0044] Furthermore, the holding assembly is the core part of the multi-station fixture, and its function is to effectively clamp the workpiece through the fixing member 21 and the multiple clamping members 22. The design of the fixing member 21 enables it to be stably fixed on the base 10, and the design of the multiple fixing parts 211 enables it to provide multiple clamping positions, thereby clamping multiple workpieces at the same time. This design not only improves the clamping capacity of the fixture, but also improves the efficiency of workpiece processing. By setting multiple clamping positions, multiple workpieces can be processed at the same time, thereby significantly improving production efficiency.

[0045] Furthermore, the fixing member 21 is an important component of the clamping assembly 20, and its function is to provide a stable structure to support multiple clamping members 22. The design of the fixing member 21 extending outward from the geometric center enables it to remain stable when clamping multiple workpieces and provide uniform clamping force. This design ensures that each clamping member 22 can be evenly supported, thereby improving the clamping stability and processing accuracy of the workpiece.

[0046] Furthermore, the clamping member 22 is connected to the fixing portion 211 by a sliding connection, and can be adjusted according to the size and shape of the workpiece, so as to achieve clamping of different workpieces. The gap 23 formed between the clamping member 22 and the fixing member 21 provides a clamping space for the workpiece. The sliding connection design enables the clamping member 22 to be flexibly adjusted to adapt to workpieces of different sizes and shapes, thereby increasing the scope of application of the fixture. At the same time, the gap 23 design provides sufficient clamping space to ensure that the workpiece will not loosen during processing, thereby improving the stability and accuracy of processing.

[0047] In summary, the multi-station fixture is installed on the machine tool, and the position and angle of the fixture are adjusted through the rotatable connection between the base 10 and the machine tool to meet the processing requirements. According to the size and shape of the workpiece, the position of the clamp 22 is adjusted to form a suitable gap 23 between it and the fixing member 21. Then the workpiece is placed in the gap 23 and fixed by the sliding connection of the clamp 22. The machine tool is started and milling is performed. After milling is completed, the milling cutter 40 exits the rotation radius of the base 10, and the base 10 is rotated at a certain angle and then fixed to process different workpieces, so as to realize multi-angle and multi-faceted processing of complex parts.

[0048] In a specific embodiment, one end of each of the fixing portions 211 is annularly disposed on the fixing member 21 along the circumference of the fixing member 21;

[0049] The fixing member 21 is provided with a through hole 212 penetrating the fixing portion 211 . The clamping member 22 is threadedly connected to the fixing portion 211 to adjust the size of the gap 23 .

[0050] Specifically, this annular arrangement allows the fixing portions 211 to be evenly distributed around the fixing member 21, thereby improving the stability of the fixture. The annularly arranged fixing portions 211 can effectively disperse the weight and clamping force of the workpiece, thereby avoiding stress concentration at a single position and reducing the possibility of deformation of the workpiece. The annular arrangement design not only improves the stability and uniformity of the fixture, but also can clamp the workpiece in multiple directions, making multi-angle and multi-directional processing easier and more accurate. This design is particularly suitable for scenarios where complex and multi-angle processing of the workpiece is required, improving the flexibility and accuracy of processing.

[0051] Furthermore, the through hole 212 on the fixing member 21 provides a path for the installation and adjustment of the clamping member 22. Through the threaded connection, the clamping member 22 can slide on the fixing portion 211, thereby adjusting the size of the clamping gap 23 to adapt to workpieces of different sizes and shapes. This threaded connection design enables the clamping member 22 to flexibly adjust its position to achieve a stable clamping of the workpiece. The threaded connection and through hole 212 design make the adjustment of the clamping member 22 more convenient and accurate. By adjusting the clamping gap 23, workpieces of different sizes and shapes can be clamped, increasing the scope of application and flexibility of the fixture. At the same time, the threaded connection provides a reliable fixing method to ensure the stability of the workpiece during processing and improve the accuracy and safety of processing.

[0052] In a specific embodiment, the midlines of two adjacent fixing portions 211 along their respective extension directions are perpendicular to each other, and each fixing portion 211 further includes a fixing surface 211a and a limiting surface 211b;

[0053] The fixing surface 211 a , the limiting surface 211 b and the clamping member 22 enclose the gap 23 , the fixing surface 211 a fixes the workpiece, and the limiting surface 211 b abuts against one end of the workpiece.

[0054] Specifically, this design enables the fixing portion 211 to be arranged at an angle of 90 degrees in space, thereby forming a fixed structure in three-dimensional space. This structure can provide stable support and clamping force in different directions, thereby ensuring the stability of the workpiece during processing. Through this vertical arrangement design, the stress of the workpiece during processing can be better dispersed, thereby reducing the deformation and displacement of the workpiece. Such a design can improve the stability and processing accuracy of the fixture, and is suitable for processing scenarios that require high precision and stability.

[0055] Furthermore, the fixing surface 211a provides a plane in contact with the workpiece for fixing the position of the workpiece; the limiting surface 211b provides a limitation at one end of the workpiece to prevent the workpiece from axially moving during the processing. The combination of the fixing surface 211a and the limiting surface 211b enables the workpiece to be processed in a stable position. The design of the fixing surface 211a and the limiting surface 211b can ensure that the workpiece remains stable during the processing, thereby improving the accuracy and quality of the processing. The limiting surface 211b can prevent the workpiece from being displaced during the processing, which is particularly important for workpieces that require precise positioning.

[0056] Furthermore, the fixed surface 211a, the limiting surface 211b and the clamping member 22 together form a stable clamping space, ensuring that the workpiece can be evenly supported and fixed in the gap 23. The fixed surface 211a provides the main supporting force, the limiting surface 211b limits the axial movement of the workpiece, and the clamping member 22 adjusts the size of the gap 23 through sliding and threaded connection to adapt to workpieces of different sizes and shapes. This design ensures that the workpiece can remain stable during the processing, thereby improving the accuracy and efficiency of the processing. By adjusting the clamping member 22, it can adapt to workpieces of different sizes and shapes, increasing the flexibility and scope of application of the fixture.

[0057] In a specific embodiment, the fixing surface 211a of each fixing portion 211 is parallel to the limiting surface 211b;

[0058] The fixing surfaces 211 a of two adjacent fixing portions 211 are perpendicular to the limiting surface 211 b .

[0059] Specifically, the vertical design of adjacent fixing parts 211 enables each workpiece to be effectively clamped and supported in different directions. This vertical arrangement can form a stable three-dimensional structure in space to ensure the stability of the workpiece in all directions. The vertical arrangement design enables the fixture to clamp multiple workpieces at the same time and provide uniform clamping force in different directions, thereby improving processing efficiency and quality. This design is suitable for processing scenarios where multiple workpieces need to be processed at the same time, and the workpieces have complex shapes and require multi-directional support.

[0060] In a specific embodiment, the fixing portion 211 further includes an inclined surface 211 c , and the inclined surface 211 c is inclined from one end of the limiting surface 211 b along a side close to the fixing surface 211 a .

[0061] Specifically, the inclined surface 211c design can provide a greater cutting depth during the milling process without lengthening the milling cutter 40. Without the inclined surface 211c, the milling cutter 40 needs to be lengthened to achieve the same milling depth, and the lengthened milling cutter 40 is more likely to break. The inclined surface 211c design avoids this situation and increases the service life of the milling cutter 40. While providing additional milling depth, the inclined surface 211c does not reduce the clamping stability of the workpiece, ensuring accuracy and safety during the processing.

[0062] Furthermore, by increasing the cutting depth of the milling cutter 40 without lengthening the milling cutter 40, the processing efficiency can be improved and the processing time can be reduced. Avoiding the use of a lengthened milling cutter 40 reduces the risk of the milling cutter 40 breaking, extends the service life of the milling cutter 40, and reduces the frequency and cost of tool replacement. The inclined surface 211c design provides a greater milling depth while maintaining stable clamping of the workpiece, ensuring processing accuracy and workpiece quality. Compared with the step design, the inclined surface 211c design will not cause the fixture to break due to excessive clamping force when clamping the workpiece, thereby increasing the durability and reliability of the fixture.

[0063] In a specific embodiment, the clamping member 22 includes a recessed portion 221 and a raised portion 222 , and a surface of the clamping member 22 close to the fixing portion 211 is recessed inwardly and formed in the recessed portion 221 ;

[0064] The protrusions 222 are symmetrically disposed along the center of the recessed portion 221 at two ends of the clamping member 22 close to the fixing portion 211 to increase the clamping force.

[0065] Specifically, the combined design of the recessed portion 221 and the raised portion 222 improves the fixing effect of the clamping member 22 on the workpiece, ensuring the stability of the workpiece during the processing. The raised portion 222 provides additional clamping force by increasing the pressure, thereby enhancing the fixing ability of the clamping member 22 and being applicable to workpieces of various sizes and shapes. Through stable and strong clamping, it is ensured that the workpiece will not move during the processing, thereby improving the processing accuracy and workpiece quality. The evenly distributed clamping force reduces the local stress concentration of the fixture, prevents the fixture from being damaged, and prolongs the service life of the fixture.

[0066] In a specific embodiment, the clamping member 22 further includes a plurality of fixing teeth 223 . The plurality of fixing teeth 223 are disposed at one end of the protruding portion 222 close to the fixing portion 211 to increase friction.

[0067] Specifically, the design of the fixed teeth 223 enables the clamping member 22 to increase friction when in contact with the fixed portion 211. The main purpose of this is to enhance the ability of the clamping member 22 to firmly clamp the workpiece, especially in scenarios such as high-speed milling that require precision and stability. By increasing friction, the fixed teeth 223 can effectively prevent the workpiece from accidentally moving due to vibration or the workpiece's own gravity during processing, ensuring the accuracy and controllability of processing.

[0068] In a specific embodiment, a plurality of the fixing teeth 223 are disposed on the protrusion 222 in an equidistant array.

[0069] Specifically, equidistantly arranging the fixed teeth 223 on the raised portion 222 can ensure that when the clamp 22 contacts the workpiece, the friction force applied is evenly distributed at multiple points. This not only increases the contact area between the clamp 22 and the workpiece, but also effectively disperses the clamping force, avoiding the problems that may be caused by concentrated load on a single point. The evenly distributed fixed teeth 223 can more stably fix the clamp 22 and reduce the fluctuation of the clamping force caused by uneven friction caused by the uneven surface of the workpiece or material characteristics. This is particularly important for applications that require long-term processing or high-speed processing.

[0070] Furthermore, when the clamping member 22 contacts the fixing portion 211, the fixing teeth 223 are evenly distributed on the protrusion 222 and contact the workpiece surface, ensuring that the clamping member 22 is firmly fixed at the desired position through uniform friction at multiple points. This design effectively enhances the stability and precision of the clamping member 22, enabling it to maintain a stable clamping force during the processing.

[0071] In a specific embodiment, the clamping assembly 20 further includes a guide rod 30, the clamping member 22 is provided with a guide groove 224, the guide rod 30 is disposed on a side of the fixing portion 211 close to the clamping member 22, and is fixedly connected to the fixing portion 211;

[0072] The guide rod 30 is directly opposite to the guide groove 224 to prevent the clamping member 22 from shaking.

[0073] Specifically, the guide rod 30 is designed to cooperate with the guide groove 224 on the clamping member 22 to ensure that the position of the clamping member 22 near the fixing portion 211 is stable. This design can effectively prevent the clamping member 22 from moving or shaking slightly due to machine tool vibration or workpiece weight during processing, thereby maintaining processing accuracy and reliability. By reducing unnecessary movement of the clamping member 22, the guide rod 30 can improve positioning accuracy and repeatability during processing, especially for workpieces that require high-precision processing and parts with complex shapes.

[0074] Further,

[0075] Furthermore, the guide rod 30 is fixedly connected to the fixed portion 211, and by docking with the guide groove 224 on the clamp 22, the movement of the clamp 22 in one axial direction is limited. This design enables the clamp 22 to maintain a stable position during the processing process without being affected by external vibrations or the workpiece's own gravity. In scenarios that require high-precision processing, such as the processing of aerospace parts and the manufacture of precision molds, the use of the guide rod 30 can significantly improve processing efficiency and quality. In addition, in automated production lines or processing processes that require long periods of operation, the guide rod 30 can effectively reduce operator intervention and ensure production stability and consistency.

[0076] A milling machine tool includes various structures of a multi-station fixture 100 as described above. Since this embodiment includes various features of the above embodiments, the above embodiment has all the beneficial effects of the above embodiments, which will not be repeated here.

[0077] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A multi-station fixture, provided on a machine tool, for clamping a workpiece for milling, characterized in that: The multi-station fixture also includes: A base, which is arranged on the machine tool and is rotatably connected to the machine tool; A clamping assembly, comprising a fixing member and a plurality of clamping members, wherein the fixing member is disposed on a side of the base away from the machine tool and is fixedly connected to the base, and the fixing member extends outward from a geometric center to form a plurality of fixing portions; Each of the clamping members is slidably connected to each of the fixing portions, and a gap is formed between each of the clamping members and each of the fixing portions for clamping the workpiece.

2. A multi-station fixture according to claim 1, characterized in that: One end of each of the fixing parts is annularly arranged on the fixing member along the circumference of the fixing member; The fixing member is provided with a through hole penetrating the fixing portion, and the clamping member is threadedly connected to the fixing portion for adjusting the size of the gap.

3. A multi-station fixture according to claim 2, characterized in that: The midlines of two adjacent fixing portions along their respective extension directions are perpendicular to each other, and each fixing portion further comprises a fixing surface and a limiting surface; The fixing surface, the limiting surface and the clamping member enclose the gap, the fixing surface fixes the workpiece, and the limiting surface abuts against one end of the workpiece.

4. A multi-station fixture according to claim 3, characterized in that: The fixing surface of each fixing portion is parallel to the limiting surface; The fixing surfaces of two adjacent fixing parts are perpendicular to the limiting surface.

5. The multi-station fixture according to claim 3, characterized in that: The fixing portion further comprises an inclined surface, and the inclined surface is inclinedly arranged from one end of the limiting surface along a side close to the fixing surface.

6. The multi-station fixture according to claim 1, characterized in that: The clamping member comprises a recessed portion and a raised portion, and a side of the clamping member close to the fixing portion is recessed inwardly and formed in the recessed portion; The protrusions are symmetrically arranged at two ends of the clamping member on one side close to the fixing portion along the center of the recessed portion to increase the clamping force.

7. The multi-station fixture according to claim 6, characterized in that: The clamping member further comprises a plurality of fixing teeth, which are arranged at one end of the protruding portion close to the fixing portion, for increasing friction.

8. The multi-station fixture according to claim 7, characterized in that: A plurality of the fixed teeth are arranged on the protruding portion in an equidistant array.

9. The multi-station fixture according to claim 1, characterized in that: The clamping assembly further includes a guide rod, the clamping member is provided with a guide groove, the guide rod is arranged on a side of the fixing portion close to the clamping member, and is fixedly connected to the fixing portion; The guide rod is directly opposite to the guide groove and is used to prevent the clamping member from shaking.

10. A milling machine tool, characterized in that: It comprises a multi-station fixture as described in any one of claims 1 to 9.

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