A clamping device for milling keyway
The clamping device, which combines a limit chain and an electric actuator, solves the problem of frequent fixture changes required by existing equipment, and achieves stable clamping and efficient milling of workpieces of different diameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI JUYING MASCH MFG CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-30
AI Technical Summary
Existing keyway milling equipment requires frequent fixture changes, resulting in low milling efficiency, especially when processing workpieces of different diameters.
A clamping device for milling keyways was designed, which adopts a combination structure of limit chain, electric push rod and support frame. The limit chain surrounds the surface of the workpiece and the electric push rod and limit frame clamp it in multiple directions, which can adapt to workpieces of different diameters and reduce mold change time.
It improves the stability and efficiency of workpieces during the milling process, reduces the frequency of fixture changes, adapts to the stable clamping of workpieces of different diameters, and improves machining accuracy and efficiency.
Smart Images
Figure CN224424355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of keyway milling technology, and specifically to a clamping device for keyway milling. Background Technology
[0002] Clamping equipment for keyway milling is a special device used in machining to fix workpieces to ensure the machining accuracy of keyways. Through precise positioning and reliable clamping, it effectively copes with vibration and cutting force during the milling process, ensuring the dimensional accuracy and positional requirements of the keyway.
[0003] Existing equipment typically manufactures fixtures for single parts, requiring the replacement of different fixtures for different workpieces. When clamping workpieces with circular surfaces, multiple directions are used to increase stability during the clamping process. For workpieces of different diameters, different diameter fixtures are also required. Frequent assembly and disassembly of the fixtures are necessary during use, which greatly reduces milling efficiency.
[0004] Based on this, the present invention designs a clamping device for milling keyways to solve the above problems. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a clamping device for milling keyways.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A clamping device for milling keyways includes: a fixed plate, a limiting frame, a first electric push rod and a support frame are provided above the fixed plate, the limiting frame, the first electric push rod and the support frame are on the same horizontal line, and the limiting frame is located on the side of the support frame away from the first electric push rod;
[0008] A limiting chain is provided above the fixed plate, and a processing part is provided on one side of the limiting chain. The processing part is provided on the surface of the support frame.
[0009] A fixing component is disposed below the fixing plate, and one side of the limiting chain is movably connected to the fixing component.
[0010] Furthermore, the limiting frame is attached to one end of the workpiece, and one side of the first electric push rod is attached to the other end of the workpiece.
[0011] Furthermore, the upper surface of the support frame is arc-shaped and fits in contact with the surface of the workpiece.
[0012] Furthermore, a limiting groove is formed on the middle surface of the support frame, and the limiting groove is located below the workpiece.
[0013] Furthermore, the fixing assembly includes two second electric actuators located below the fixing plate, with one output end of each of the two second electric actuators driven to connect to a limiting rod, and the two limiting rods being movably connected to one side of the limiting chain.
[0014] Furthermore, two guide rails are fixedly connected to the lower part of the fixed plate, and the two limiting rods slide inside the two guide rails respectively.
[0015] Furthermore, the limiting chain is composed of multiple limiting shafts and multiple limiting blocks, and one side surface of the limiting chain is in contact with the outer wall of the workpiece.
[0016] Furthermore, the surface of the limiting chain is provided with multiple limiting teeth at equal intervals, and the multiple limiting teeth are opened laterally.
[0017] Furthermore, the limiting frame extends away from the workpiece, and the lower surface of the limiting frame is in contact with the upper surface of the fixing plate.
[0018] Furthermore, the output end of the first electric actuator is equipped with a baffle that slides vertically above the fixed plate.
[0019] Beneficial effects
[0020] 1. A limiting chain is wound in a ring around the workpiece. The fixing component drives the limiting chain to tighten. The limiting chain surrounds the surface of the workpiece, so that the lower surface of the workpiece fits against the support frame. The first electric push rod pushes the support frame. The two ends of the support frame are clamped by the limiting frame and the first electric push rod, which greatly improves the stability of the workpiece in use. The limiting frame, the first electric push rod and the limiting chain clamp the workpiece in multiple directions, which improves the stability of the workpiece when milling grooves. The limiting chain can clamp workpieces of different diameters, which greatly reduces the time for changing molds and improves the efficiency of milling grooves.
[0021] 2. The guide rail is installed below the fixed plate. The guide rail limits the limit rod, which slides inside the guide rail. The limit chain slides between the two guide rails, improving the stability during the stretching process of the limit chain. The limit chain changes its internal diameter through multiple limit shafts. The flexibility of the limit chain allows for the fitting of workpieces of different diameters. The limit chain increases the contact area with the workpiece, improving stability. The limit teeth on the surface of the limit chain increase the contact area between the limit chain and the workpiece, improving friction and stability. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This utility model discloses a three-dimensional main structure of a clamping device for milling keyways. Figure 1 ;
[0024] Figure 2 This utility model discloses a three-dimensional main structure of a clamping device for milling keyways. Figure 2 ;
[0025] Figure 3 This is a bottom view of the fixing component structure of a clamping device for milling keyways according to this utility model;
[0026] Figure 4 This is a perspective view of the limiting tooth structure of a clamping device for milling keyways according to this utility model.
[0027] The labels in the diagram represent:
[0028] 100. Fixing plate; 101. Limiting frame; 102. First electric actuator; 103. Support frame; 104. Limiting groove; 200. Limiting chain; 201. Limiting tooth; 300. Machined part; 400. Fixing assembly; 401. Second electric actuator; 402. Guide rail; 403. Limiting rod. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0030] The present invention will be further described below with reference to the embodiments.
[0031] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4A clamping device for milling keyways includes: a fixed plate 100, a limiting chain 200, and a fixing assembly 400. A limiting frame 101, a first electric push rod 102, and a support frame 103 are provided above the fixed plate 100. The limiting frame 101, the first electric push rod 102, and the support frame 103 are on the same horizontal line. The limiting frame 101 is located on the side of the support frame 103 away from the first electric push rod 102. The limiting chain 200 is located above the fixed plate 100. A processing part 300 is provided below one side of the limiting chain 200 and is located on the surface of the support frame 103. The fixing assembly 400 is located below the fixed plate 100. One side of the limiting chain 200 is movably connected to the fixing assembly 400.
[0032] In this embodiment of the utility model, when it is necessary to clamp the workpiece 300, the fixing plate 100 is fixed on the worktable, and a certain space is required below the fixing plate 100. The fixing plate 100 is fixed below the milling machine, and the workpiece 300 is placed above the support frame 103. The support frame 103 supports the bottom of the workpiece 300, and one end of the workpiece 300 is attached to the limiting frame 101. The other end of the workpiece 300 is attached to the output end of the first electric push rod 102. The first electric push rod 102 squeezes one end of the workpiece 300 so that the other end of the workpiece 300 is precisely attached to the limiting frame 101.
[0033] In this embodiment of the utility model, when the workpiece 300 is placed, it is placed inside the limiting chain 200. The limiting chain 200 surrounds the surface of the workpiece 300. The lower part of the limiting chain 200 is stretched and clamped by the fixing component 400, so that the lower part of the limiting chain 200 is in close contact with the surface of the workpiece 300. The workpiece 300 is clamped in multiple directions by the limiting frame 101, the first electric push rod 102 and the limiting chain 200, which improves the stability of the workpiece 300 when milling grooves. The limiting chain 200 can clamp workpieces 300 of different diameters, which greatly reduces the time for changing molds and improves the efficiency of milling grooves.
[0034] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the limiting frame 101 is attached to one end of the workpiece 300, one side of the first electric push rod 102 is attached to the other end of the workpiece 300, the upper surface of the support frame 103 is V-shaped or arc-shaped and is attached to the surface of the workpiece 300, a limiting groove 104 is opened on the middle surface of the support frame 103, the limiting groove 104 is located below the workpiece 300, the fixing assembly 400 includes two second electric push rods 401 disposed below the fixing plate 100, one side of the output end of the two second electric push rods 401 is driven to connect to the limiting rod 403, and the two limiting rods 403 are movably connected to one side of the limiting chain 200.
[0035] In this embodiment of the utility model, a support block is installed below the limiting frame 101 to improve the connection strength between the limiting frame 101 and the lower fixing plate 100. The first electric push rod 102 pushes the support frame 103. The two ends of the support frame 103 are clamped by the limiting frame 101 and the first electric push rod 102, which greatly improves the stability of the workpiece 300 in use.
[0036] In this embodiment of the utility model, the support frame 103 supports the lower part of the workpiece 300. Multiple support frames 103 can be installed to support different positions of the workpiece 300. The second electric push rod 401 pushes the limiting rod 403, causing the limiting rod 403 to retract downward. The lower part of the limiting chain 200 limits the upper surface of the workpiece 300, restricting the upward movement force of the workpiece 300 and improving the stability of the workpiece 300 during the milling process.
[0037] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, in a preferred embodiment of the present invention, two guide rails 402 are fixedly connected to the lower part of the fixed plate 100, and two limiting rods 403 slide inside the two guide rails 402 respectively. The limiting chain 200 is composed of multiple limiting shafts and multiple limiting blocks. One side surface of the limiting chain 200 is in contact with the outer wall of the workpiece 300. Multiple limiting teeth 201 are equidistantly provided on the surface of the limiting chain 200, and the multiple limiting teeth 201 are opened laterally.
[0038] In this embodiment of the utility model, the lateral limiting teeth 201 increase the surface friction of the limiting chain 200. The guide rail 402 is installed below the fixed plate 100. The guide rail 402 limits the limiting rod 403. The limiting rod 403 slides inside the guide rail 402. The limiting chain 200 slides between the two guide rails 402, which improves the stability of the limiting chain 200 during the stretching process.
[0039] In this embodiment of the utility model, the limiting chain 200 changes its internal diameter through multiple limiting shafts. The flexibility of the limiting chain 200 allows it to fit workpieces 300 of different diameters. The limiting chain 200 increases the contact area with the workpiece 300, thereby improving stability. The limiting teeth 201 on the surface of the limiting chain 200 increase the contact area between the limiting chain 200 and the workpiece 300, thereby improving friction and stability.
[0040] In some embodiments, such as Figure 1 , Figure 3 and Figure 4As shown, the limiting frame 101 extends away from the workpiece 300, and the lower surface of the limiting frame 101 is in contact with the upper surface of the fixing plate 100. The output end of the first electric push rod 102 is equipped with a baffle that slides vertically above the fixing plate 100.
[0041] In this embodiment of the utility model, the extension surface of the limiting frame 101 increases the contact area between the upper part of the fixing plate 100 and the limiting frame 101. The extension surface of the limiting frame 101 is inclined to the side away from the workpiece 300 to improve the structural strength. The first electric push rod 102 pushes the baffle to fit against one end of the workpiece 300. A slide rail is installed below the baffle to increase the stability of the baffle when sliding.
[0042] In this embodiment of the utility model, the baffle increases the contact area between the output end of the first electric push rod 102 and the surface of the workpiece 300. The baffle and the limiting frame 101 clamp the two ends of the workpiece 300. The extension surface of the limiting frame 101 increases the support strength of the workpiece 300, making the workpiece 300 less prone to shaking and improving the stability of the workpiece 300 during the milling process.
[0043] It should be noted that the first electric actuator 102 and the second electric actuator 401 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the first electric actuator 102 and the second electric actuator 401 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.
[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A clamping apparatus for keyway milling, comprising a fixed plate (100), characterized in that: Above the fixed plate (100) are provided a limiting frame (101), a first electric push rod (102) and a support frame (103). The limiting frame (101), the first electric push rod (102) and the support frame (103) are on the same horizontal line. The limiting frame (101) is located on the side of the support frame (103) away from the first electric push rod (102). A limiting chain (200) is provided above the fixed plate (100), and a processing part (300) is provided below one side of the limiting chain (200), and the processing part (300) is provided on the surface of the support frame (103); A fixing component (400) is disposed below the fixing plate (100), and one side of the limiting chain (200) is movably connected to the fixing component (400).
2. The clamping apparatus for keyway milling according to claim 1, wherein The limiting frame (101) is attached to one end of the workpiece (300), and one side of the first electric push rod (102) is attached to the other end of the workpiece (300).
3. The clamping apparatus for keyway-milling according to claim 2, wherein The upper surface of the support frame (103) is V-shaped or arc-shaped and fits against the surface of the processed part (300).
4. The clamping apparatus for keyway-milling according to claim 3, wherein A limiting groove (104) is provided on the middle surface of the support frame (103), and the limiting groove (104) is located below the workpiece (300).
5. The clamping device for milling keyways according to claim 1, characterized in that, The fixing component (400) includes two second electric actuators (401) located below the fixing plate (100). One output end of each of the two second electric actuators (401) is driven to connect to a limiting rod (403). The two limiting rods (403) are movably connected to one side of the limiting chain (200).
6. The clamping device for milling keyways according to claim 5, characterized in that, Two guide rails (402) are fixedly connected to the lower part of the fixed plate (100), and the two limiting rods (403) slide inside the two guide rails (402) respectively.
7. The clamping device for milling keyways according to claim 6, characterized in that, The limiting chain (200) is composed of multiple limiting shafts and multiple limiting blocks, and one side surface of the limiting chain (200) is in contact with the outer wall of the workpiece (300).
8. The clamping device for milling keyways according to claim 1, characterized in that, The surface of the limiting chain (200) is provided with a plurality of limiting teeth (201) at equal intervals, and the plurality of limiting teeth (201) are opened laterally.
9. The clamping device for milling keyways according to claim 1, characterized in that, The limiting frame (101) extends away from the workpiece (300), and the lower surface of the limiting frame (101) is in contact with the upper surface of the fixing plate (100).
10. The clamping device for milling keyways according to claim 9, characterized in that, The output end of the first electric actuator (102) drives a baffle that slides vertically above the fixed plate (100).