Clamp tool for milling upper and lower surfaces of various cylinder covers

Abstract

The utility model relates to the technical field of machining clamps, in particular to a clamp tool for milling upper and lower surfaces of various cylinder covers, which comprises a base, a plurality of positioning holes and a plurality of mounting holes are arranged on the base; the positioning assembly is mounted at a positioning hole formed in the base; the clamping assemblies are installed at the installation holes formed in the base and distributed on the two sides of the base. The clamp tool for milling the upper surface and the lower surface of the cylinder cover of various types has the following beneficial effects: firstly, the clamp tool is strong in generality: through the design of the adjustable positioning block, the clamp tool can adapt to the positioning requirements of the cylinder covers of various types, the number of special clamps is reduced, and the manufacturing cost and the management cost of the clamp are reduced; the position can be accurately adjusted through the adjustable positioning block, the adjustable positioning block is tightly attached to the positioning datum plane of the air cylinder cover, the positioning precision of the air cylinder cover in the machining process is guaranteed, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and in particular to a fixture for milling the upper and lower surfaces of various types of cylinder heads. Background Technology

[0002] In engine manufacturing, the machining accuracy of the cylinder head plays a crucial role in engine performance. Milling the top and bottom surfaces of the cylinder head is an important step in the machining process. However, existing cylinder head fixtures suffer from poor versatility; different types of cylinder heads often require dedicated fixtures, which not only increases manufacturing and management costs but also reduces production efficiency. Furthermore, existing fixtures need improvement in positioning accuracy and clamping stability, making it difficult to meet high-precision machining requirements. Therefore, a multi-type cylinder head milling fixture is needed to solve these problems. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a fixture for milling the upper and lower surfaces of various cylinder heads, so as to solve the problems of poor fixture versatility, insufficient positioning accuracy and clamping stability in the prior art, and to realize efficient and high-precision machining of various cylinder heads.

[0004] This utility model embodiment is implemented as follows: a milling fixture for the upper and lower surfaces of various cylinder heads includes: a base, on which positioning holes and mounting holes are provided, and multiple positioning holes and mounting holes are provided; a positioning component, which is installed at the positioning holes provided in the base, for positioning the cylinder head placed on the base; and a clamping component, which is installed at the mounting holes provided in the base and distributed on both sides of the base, for clamping and fixing the cylinder head.

[0005] Preferably, the positioning component includes: a positioning block, on which a bolt passes and is threadedly connected to a positioning hole on the base, the bolt being used to fix the positioning block to the base, the positioning block being able to be fixed at different positioning holes by the bolt to adapt to different cylinder heads; the positioning block is provided with a positioning surface, the positioning surface cooperating with the cylinder head reference surface to achieve precise positioning of the cylinder head.

[0006] Preferably, the clamping assembly includes: a hydraulic cylinder, which is fixedly installed on both sides of the base, and a piston rod is installed on the hydraulic cylinder. The hydraulic cylinder is used to drive the piston rod to rise or fall; a connecting arm, which is connected to the piston rod, and a pressure plate is slidably connected to the connecting arm. The pressure plate has a sliding opening; a guide post, which is fixedly installed on the base. The pressure plate is fitted onto the guide post through the sliding opening. A tightening nut and a double-ended threaded sleeve are threadedly connected to the guide post. The tightening nut is used to limit the position of the pressure plate; a buffer spring, whose two ends are respectively pressed against the pressure plate and the double-ended threaded sleeve. The double-ended threaded sleeve is used to adjust the buffering force of the buffer spring; and an elastic washer, which is set on the lower surface of the pressure plate to prevent the surface from being damaged during the clamping of the cylinder head.

[0007] The milling fixture for various types of cylinder heads provided by this utility model has the following advantages: First, strong versatility: The adjustable positioning block design can adapt to the positioning needs of various cylinder head types, reducing the number of dedicated fixtures and lowering manufacturing and management costs. Second, high positioning accuracy: The adjustable positioning block can precisely adjust its position, closely fitting the positioning reference surface of the cylinder head, ensuring the positioning accuracy of the cylinder head during processing. Third, good clamping stability: The cylinder-driven pressure plate provides stable clamping force, and the elastic shims ensure clamping effectiveness while protecting the surface quality of the cylinder head, improving stability during processing. Fourth, improved production efficiency: This fixture can quickly clamp and switch between different types of cylinder heads, reducing clamping time and improving production efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of a fixture for milling the upper and lower surfaces of various cylinder heads.

[0009] In the attached diagram: 1-base, 2-positioning assembly, 3-clamping assembly, 21-positioning block, 22-bolt, 31-cylinder, 32-piston rod, 33-connecting arm, 34-pressure plate, 35-guide post, 36-tightening nut, 37-double-ended threaded sleeve, 38-buffer spring, 39-elastic washer. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not limit the present utility model.

[0011] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0012] Please see Figure 1 This utility model provides a milling fixture for the upper and lower surfaces of various types of cylinder heads, comprising:

[0013] The base 1 has multiple positioning holes and mounting holes; the positioning component 2 is installed in the positioning holes of the base 1 and is used to position the cylinder head placed on the base 1; the clamping component 3 is installed in the mounting holes of the base 1 and is distributed on both sides of the base 1 and is used to press and fix the cylinder head.

[0014] The base 1 is the basic component of the entire fixture. Its upper surface is provided with multiple positioning holes and mounting holes for installing the positioning component 2 and the clamping component 3. When clamping the cylinder head, the positioning component 2 is installed at different positioning holes on the base 1 according to different types of cylinder heads. Then, the positioning reference surface of the cylinder head is aligned with the positioning component 2 and placed on the base 1. The clamping component 3 is then opened to clamp and fix the cylinder head.

[0015] like Figure 1 As shown, in a preferred embodiment of the present invention, the positioning component 2 includes: a positioning block 21, on which a bolt 22 threadedly connects to a positioning hole on the base 1 passes. The bolt 22 is used to fix the positioning block 21 to the base 1. The positioning block 21 can be fixed at different positioning holes by the bolt to adapt to different cylinder heads. The positioning block 21 is provided with a positioning surface, which cooperates with the cylinder head reference surface to achieve precise positioning of the cylinder head.

[0016] The positioning block 21 is connected to the base 1 by bolts 22. The position of the positioning block 21 on the base 1 can be adjusted according to the size and positioning requirements of different types of cylinder heads. Each positioning block 21 is provided with a positioning surface for contacting the positioning reference surface of the cylinder head to achieve precise positioning of the cylinder head. Specifically, according to the size and positioning requirements of different types of cylinder heads, the positioning block 21 is fixed in the designated positioning hole by bolts 22, and then the positioning reference surface of the cylinder head is aligned with the positioning block 21 and placed in.

[0017] like Figure 1 As shown, in a preferred embodiment of this utility model, the clamping assembly 3 includes: a hydraulic cylinder 31, which is fixedly installed on both sides of the base 1, and a piston rod 32 is installed on the hydraulic cylinder 31. The hydraulic cylinder 31 is used to drive the piston rod 32 to rise or fall; a connecting arm 33, which is connected to the piston rod 32, and a pressure plate 34 is slidably connected to the connecting arm 33. The pressure plate 34 has a sliding opening; a guide post 35, which is fixedly installed on the base 1, and the pressure plate 34 is sleeved on the guide post 35 through the sliding opening. A tightening nut 36 and a double-ended threaded sleeve 37 are threadedly connected to the guide post 35. The tightening nut 36 is used to limit the pressure plate 34; a buffer spring 38, whose two ends are respectively close to the pressure plate 34 and the double-ended threaded sleeve 37. The double-ended threaded sleeve 37 is used to adjust the buffering force of the buffer spring 38; and an elastic pad 39, which is set on the lower surface of the pressure plate 34 to prevent the surface from being damaged during the cylinder head clamping process.

[0018] The pressure plate 34 is connected to the piston rod 32 of the hydraulic cylinder 31 via the connecting arm 33. The hydraulic cylinder 31 is installed on the side of the base 1. By controlling the extension and retraction of the piston rod 32 on the hydraulic cylinder 31, the pressure plate 34 is driven to clamp and release the cylinder head. The elastic pad 39 on the lower surface of the pressure plate 34 can prevent the cylinder head surface from being crushed during the clamping process. The design of the tightening nut 36 can limit the pressure plate 34. Rotating the double-ended threaded sleeve 37 can control the movement of the controller on the guide post 35, thereby adjusting the buffering force of the buffer spring 38.

[0019] In summary, when using this multi-variety cylinder head upper and lower surface milling fixture, firstly, adjust the position of the positioning block 21 on the base 1 according to the type of cylinder head to be machined, so that the positioning surface of the positioning block 21 matches the positioning reference surface of the cylinder head. Then, place the cylinder head on the fixture, so that the cylinder head contacts the positioning surface of the positioning block 21. Next, start the hydraulic cylinder 31. The hydraulic cylinder 31 drives the pressure plate 34 downward through the piston rod 32 and the connecting arm 33. The pressure plate 34 clamps the cylinder head onto the base 1 through the elastic washer 39. After clamping, the upper and lower surfaces of the cylinder head can be milled. After machining, control the piston rod 32 to retract through the hydraulic cylinder 31, and the pressure plate 34 will release, allowing the machined cylinder head to be removed.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for milling the upper and lower surfaces of various cylinder heads, comprising a base, characterized in that, The base is provided with positioning holes and mounting holes, and multiple positioning holes and mounting holes are provided; A positioning component, which is installed at the positioning hole in the base, is used to position the cylinder head placed on the base. The clamping assembly is installed at the mounting holes in the base and distributed on both sides of the base to press and fix the cylinder head.

2. The milling fixture for the upper and lower surfaces of multi-variety cylinder heads according to claim 1, characterized in that, The positioning component includes: A positioning block, on which a bolt is threaded and connected to a positioning hole on the base, is used to fix the positioning block to the base. The positioning block can be fixed to different positioning holes by the bolt to adapt to different cylinder heads. The positioning block is provided with a positioning surface, which cooperates with the cylinder head reference surface to achieve precise positioning of the cylinder head.

3. The milling fixture for the upper and lower surfaces of multi-variety cylinder heads according to claim 1, characterized in that, The clamping assembly includes: A hydraulic cylinder is fixedly installed on both sides of the base. A piston rod is installed on the hydraulic cylinder, and the hydraulic cylinder is used to drive the piston rod to rise or fall. A connecting arm is connected to the piston rod, and a pressure plate is slidably connected to the connecting arm. The pressure plate has a sliding opening. The guide post is fixedly installed on the base. The pressure plate is sleeved on the guide post through the sliding opening. The guide post is threaded with a tightening nut and a double-ended threaded sleeve. The tightening nut is used to limit the position of the pressure plate. The buffer spring has its two ends tightly attached to the pressure plate and the double-ended threaded sleeve, respectively. The double-ended threaded sleeve is used to adjust the buffering force of the buffer spring. An elastic gasket is placed on the lower surface of the pressure plate to prevent the surface of the cylinder head from being damaged during clamping.

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