Valve body four-axis machining center clamp
By designing the valve body four-axis machining center fixture and using clamping mechanisms and linear drive parts to fix the valve body, the problems of difficult assembly and unreliable fixing of traditional fixtures are solved, and the accuracy and efficiency of valve body processing are improved.
Patent Information
- Application Number
- CN202422390177.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Traditional fixtures have problems such as difficult assembly and unreliable fixation in valve body processing, which affects processing accuracy and efficiency.
A valve body four-axis machining center fixture is designed, including a substrate, assembly groove, through groove and clamping mechanism. The valve body shell is pressed through the clamping mechanism and embedded in the assembly groove of the substrate to provide space for the line or pipeline, and the linear drive member and limit ring are combined to improve positioning accuracy and reliability.
The valve body is stable clamped, which reduces processing errors, and improves disassembly and assembly convenience and processing quality.
Smart Images
Figure CN223130078U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fixtures for valve body processing, and particularly relates to a fixture for a four-axis machining center of a valve body. Background Technique
[0002] In the process of manufacturing automotive parts, as one of the important mechanical components, the valve body is usually used to control the flow of fluids and ensure that systems such as engines operate under optimal conditions. The complex geometric structure and high-precision requirements of the valve body make its processing process particularly crucial. In order to achieve the required precision, four-axis machining centers are often widely used in the processing of valve bodies. The design and use of fixtures during the processing directly affect the positioning accuracy and processing quality of workpieces. Therefore, in a four-axis machining center, the fixture is an important part of the entire processing system.
[0003] However, with the complexity of the valve body structure, traditional fixtures face certain challenges in actual operation. For example, due to the complex geometric shape of the valve body and the need for multi-angle machining, it is often difficult to assemble existing fixtures, and operators need to spend a lot of time making adjustments. In addition, the firmness of the fixture when fixing the valve body has also become an important factor affecting the machining accuracy. If the clamping is unstable, it may lead to an increase in machining errors, thereby affecting the quality of the final product. Therefore, there is an urgent need to design a fixture for a four-axis machining center of a valve body that is easy to assemble and firmly fixed to improve the processing efficiency and quality of the valve body. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a fixture for a four-axis machining center of a valve body to solve the above problems.
[0005] The utility model realizes the above purpose through the following technical solutions:
[0006] A fixture for a four-axis machining center of a valve body, the fixture is arranged in the four-axis machining center of the valve body and is used for clamping the valve body. The valve body includes a base and a housing arranged on the base. The fixture includes a substrate, an assembly groove arranged on the assembly surface of the substrate and corresponding to the base, a through groove arranged on one side of the substrate, and a first clamping mechanism embedded in the through groove. The first clamping mechanism is used to press the housing so that the base of the valve body is fastened in the assembly groove. There is an opening on one side of the through groove. When assembling the fixture, the first clamping mechanism is embedded in the through groove, and the opening is used to provide a reserved space for the circuits or pipelines on the first clamping mechanism, so as to conduct wiring or pipeline docking for the first clamping mechanism. After the assembly is completed, the base of the valve body is embedded in the assembly groove, and the housing of the valve body is pressed down by the first clamping mechanism to fasten the valve body in the assembly groove of the substrate. Then, the substrate is fixed on the A-axis of the four-axis machining center of the valve body, so that the valve body and the four-axis machining center of the valve body are fixed through the fixture.
[0007] As a further optimized solution of the present utility model, a connecting member is provided on the substrate, and the first clamping mechanism is fixedly connected to the substrate through the connecting member.
[0008] As a further optimized solution of the present utility model, the first clamping mechanism includes a first linear driving member and a first pressing member fixedly arranged at the output end of the first linear driving member. The first linear driving member is detachably connected to the connecting member, and the connecting member is detachably connected to the substrate.
[0009] As a further optimized solution of the present utility model, an installation groove is provided on the other side of the substrate, and a second clamping mechanism for pressing the outer shell is embedded in the installation groove.
[0010] As a further optimized solution of the present utility model, a notch is provided on one side of the installation groove.
[0011] As a further optimized solution of the present utility model, the second clamping mechanism includes a second linear driving member and a second pressing member fixedly arranged at the output end of the second linear driving member.
[0012] As a further optimized solution of the present utility model, a valve rod sleeve is provided on the outer shell of the valve body. The second pressing member includes a connecting block fixedly arranged at the output end of the second linear driving member and a pressing plate fixedly arranged at one end of the connecting block. A through hole corresponding to the valve rod sleeve is provided inside the pressing plate.
[0013] As a further optimized solution of the present utility model, the second pressing member further includes a limiting ring arranged inside the through hole, and a chamfer is provided on the inner edge of the bottom of the limiting ring.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1) In the present utility model, a clamping mechanism is installed in the through groove. By pressing down the outer shell of the valve body through the clamping mechanism, the valve body is firmly fixed in the assembly groove of the substrate. An opening is provided on one side of the through groove to facilitate the embedding of the clamping mechanism into the substrate. The opening provides a reserved space for the circuits or pipelines on the clamping mechanism, facilitating wiring or pipeline docking and improving the convenience of disassembling and assembling the fixture.
[0016] 2) In the present utility model, one clamping mechanism is used to fix the first shell of the built-in actuator accommodation cavity, and another clamping mechanism is used to fix the second shell of the built-in valve cavity. The clamping mechanism corresponding to the first shell is located in the through groove, and the clamping mechanism corresponding to the second shell is located in the relatively shallow installation groove. The assembly heights of the two clamping mechanisms correspond to the clamping parts of the valve body, reducing the stroke required for the clamping mechanism to fix the valve body, and reducing the weight and volume of the fixture while improving the firmness of clamping the valve body.
[0017] 3) The pressing member for fixing the second housing of the present utility model is composed of a connecting block and a pressing plate. A through hole corresponding to the valve stem sleeve is provided on the pressing plate so that the clamping mechanism presses and fixes the valve body housing. A limiting ring is arranged inside the through hole to restrict the valve body in the direction parallel to the assembly surface, further improving the positioning effect of the fixture on the valve body and reducing the machining error of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of the working state of the fixture according to the first embodiment of the present utility model;
[0019] Figure 2 is an exploded view of the fixture according to the first embodiment of the present utility model;
[0020] Figure 3 is a schematic diagram of the valve body structure of the present utility model;
[0021] Figure 4 is a schematic diagram of the working state of the fixture according to the second embodiment of the present utility model;
[0022] Figure 5 is an exploded view of the fixture according to the second embodiment of the present utility model;
[0023] Figure 6 is a cross-sectional view of the limiting ring of the present utility model.
[0024] In the figure: 1, substrate; 2, assembly groove; 3, through groove; 4, first clamping mechanism; 5, opening; 6, connecting member; 7, installation groove; 8, second clamping mechanism; 9, notch; 41, first linear driving member; 42, first pressing member; 81, second linear driving member; 82, second pressing member; 821, connecting block; 822, pressing plate; 823, through hole; 824, limiting ring; V, valve body; V1, base; V2, first housing; V3, second housing. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0026] First Embodiment
[0027] As Figures 1-3As shown in the figure, this embodiment relates to a fixture for a four-axis machining center of a valve body. The fixture is arranged inside the four-axis machining center of the valve body. The four-axis machining center of the valve body has an X-axis, a Y-axis, a Z-axis, and an A-axis. The fixture of this embodiment cooperates with the A-axis of the four-axis machining center of the valve body to clamp the valve body V. The valve body V includes a base V1 and a housing arranged on the base V1. The housing is divided into a first housing V2 and a second housing V3. An actuator accommodation cavity is arranged inside the first housing V2. The actuator accommodation cavity can be assembled with an electric or pneumatic actuator. The actuator drives a valve core through a valve stem. A valve cavity is arranged inside the second housing V3. The valve cavity is used to assemble the valve core. A valve stem sleeve corresponding to the valve stem is arranged on the top of the second housing V3.
[0028] The fixture includes a base plate 1 and an assembly groove 2 arranged on the assembly surface of the base plate 1 and corresponding to the base V1. This assembly surface is the end surface where the assembly groove 2 of the base plate 1 is located, that is, Figure 1 and Figure 2 the upper surface of the base plate 1 in. The fixture also includes a through groove 3 arranged on one side of the base plate 1 and a first clamping mechanism 4 embedded in the through groove 3. The first clamping mechanism 4 is used to press the housing so that the base V1 of the valve body V is fastened in the assembly groove 2. An opening 5 is arranged on one side of the through groove 3. The opening 5 is used to provide a reserved space for the circuit or pipeline on the first clamping mechanism 4 so as to connect the wire or pipeline to the first clamping mechanism 4. When the power source of the first clamping mechanism 4 uses a cylinder or a hydraulic cylinder, the opening 5 can be used for pipeline connection. When the power source of the first clamping mechanism 4 uses an electric push rod, the opening 5 can be used for the electric push rod to connect the power supply wire and the signal wire.
[0029] A connecting piece 6 is arranged on the base plate 1. The first clamping mechanism 4 is fixedly connected with the base plate 1 through the connecting piece 6. The first clamping mechanism 4 includes a first linear driving part 41 and a first pressing part 42 fixedly arranged at the output end of the first linear driving part 41. The first linear driving part 41 is detachably connected with the connecting piece 6 through a threaded fastener. The connecting piece 6 is detachably connected with the base plate 1 through a threaded fastener. The first linear driving part 41 is the power source of the first clamping mechanism 4. This power source is preferably a cylinder. The connecting piece 6 is preferably a cylinder seat with two groups of assembly holes. Connecting holes corresponding to the two groups of assembly holes are respectively arranged on the base plate 1 and the cylinder.
[0030] When assembling the fixture, embed the first clamping mechanism 4 into the through groove 3, place the connecting piece 6 at the bottom of the base plate 1, and fix the connecting piece 6 with the base plate 1 and the first linear driving part 41 through threaded fasteners to complete the assembly of the fixture. After the assembly is completed, embed the base V1 of the valve body V into the assembly groove 2. The assembly groove 2 restricts the valve body V on the assembly surface. Press down the housing of the valve body V through the first clamping mechanism 4 to fasten the valve body V in the assembly groove 2 of the base plate 1. Then fix the base plate 1 on the A-axis of the four-axis machining center of the valve body to complete the clamping and fixing of the valve body V.
[0031] Second Embodiment
[0032] As Figures 4-6 shown, this embodiment relates to a four-axis machining center fixture for a valve body. The difference between this fixture and the previous embodiment is that an installation groove 7 is provided on the other side of the substrate 1, and a second clamping mechanism 8 for pressing the housing is arranged in the installation groove 7. A notch 9 is provided on one side of the installation groove 7, and the notch 9 allows the second clamping mechanism 8 to perform pipeline connection or wiring. The second clamping mechanism 8 includes a second linear driving member 81 and a second pressing member 82 fixed to the output end of the second linear driving member 81. The second linear driving member 81 in this embodiment has the same structure as the first linear driving member 41, and the installation height of the second linear driving member 81 is higher than that of the first linear driving member 41 so that it can press down on the top of the second housing V3 through the second pressing member 82. The second pressing member 82 includes a connecting block 821 fixed to the output end of the second linear driving member 81 and a pressing plate 822 fixed to one end of the connecting block 821. A through hole 823 corresponding to the valve stem sleeve is provided inside the pressing plate 822. An assembly hole corresponding to the second linear driving member 81 is also provided at the bottom of the installation groove 7 of the substrate 1. After the second linear driving member 81 is embedded in the installation groove 7, the second linear driving member 81 is fixed by a threaded fastener.
[0033] The second pressing member 82 further includes a limiting ring 824 arranged inside the through hole 823, and a chamfer is provided on the inner edge of the bottom of the limiting ring 824. The inner diameter of the limiting ring 824 is consistent with the outer diameter of the valve stem sleeve on the valve body V. When the second linear driving member 81 pulls down the pressing plate 822 through the connecting block 821 to press down and fix the second housing V3, the limiting ring 824 can constrain the valve body V on the assembly surface, improving the positioning accuracy of the fixture for the valve body V.
[0034] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.
Claims
1. A four-axis machining center fixture for a valve body, the fixture is arranged inside the four-axis machining center of the valve body and is used for clamping the valve body. The valve body includes a base and a housing arranged on the base, and is characterized in that: The fixture includes a substrate (1), an assembly groove (2) provided on the assembly surface of the substrate (1) and corresponding to the base, a through groove (3) provided on one side of the substrate (1), and a first clamping mechanism (4) embedded in the through groove (3). The first clamping mechanism (4) is used to press the outer shell so that the base of the valve body is fastened in the assembly groove (2). An opening (5) is provided on one side of the through groove (3).
2. The fixture for the four-axis machining center of the valve body according to claim 1, wherein: A connecting member (6) is provided on the substrate (1), and the first clamping mechanism (4) is fixedly connected to the substrate (1) through the connecting member (6).
3. The fixture for the four-axis machining center of the valve body according to claim 2, characterized in that: The first clamping mechanism (4) includes a first linear driving member (41) and a first pressing member (42) fixed to the output end of the first linear driving member (41). The first linear driving member (41) is detachably connected to the connecting member (6), and the connecting member (6) is detachably connected to the substrate (1).
4. The fixture for the four-axis machining center of the valve body according to claim 1, characterized in that: An installation groove (7) is provided on the other side of the substrate (1), and a second clamping mechanism (8) for pressing the outer shell is embedded in the installation groove (7).
5. The fixture for the four-axis machining center of the valve body according to claim 4, characterized in that: A notch (9) is provided on one side of the installation groove (7).
6. The fixture for the four-axis machining center of the valve body according to claim 4, characterized in that: The second clamping mechanism (8) includes a second linear driving member (81) and a second pressing member (82) fixed to the output end of the second linear driving member (81).
7. The fixture for the four-axis machining center of the valve body according to claim 6, wherein: A valve stem sleeve is provided on the outer shell of the valve body. The second pressing member (82) includes a connecting block (821) fixed to the output end of the second linear driving member (81) and a pressing plate (822) fixed to one end of the connecting block (821). A through hole (823) corresponding to the valve stem sleeve is provided inside the pressing plate (822).
8. The fixture for the four-axis machining center of the valve body according to claim 7, characterized in that: The second pressing member (82) further includes a limiting ring (824) provided inside the through hole (823), and a chamfer is provided on the inner edge of the bottom of the limiting ring (824).