Cylinder sleeve extrusion honing finishing machining clamp
By designing a cylinder liner extrusion honing finishing fixture, the problems of inconvenient cylinder liner workpiece clamping and grinding fluid leakage were solved, and efficient finishing of the cylinder liner inner hole was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-07
AI Technical Summary
The existing cylinder liner honing device has a simple structure, which makes it inconvenient to clamp the cylinder liner workpiece, the fixation is not reliable enough, and the grinding fluid is prone to leakage, affecting the surface finish of the inner hole.
A cylinder liner extrusion honing finishing fixture was designed, comprising an upper cavity and a lower cavity. A piston and slide structure driven by a hydraulic cylinder are used to achieve vertical clamping and sealing of the cylinder liner, ensuring that the grinding fluid does not leak.
It enables simple clamping and secure fixing of cylinder liner workpieces, avoids grinding fluid leakage, and improves the surface finish of the inner hole.
Smart Images
Figure CN224088774U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of cylinder liner honing devices, specifically relating to a cylinder liner extrusion honing finishing fixture. Background Technology
[0002] Cylinder liners, or simply cylinder liners, are crucial components of internal combustion engines. After heat treatment of the inner bore during cylinder liner manufacturing, burrs and oxide scale remain. A honing device is used to smooth the inner bore, achieving a more refined finish. During the honing process, a honing fluid is typically added to the cylinder liner. This fluid is generally a homogeneous mixture of abrasive and matrix media. Depending on the honing requirements, additives such as lubricants, plasticizers, or viscosity reducers are added to the matrix media to alter its viscosity and flowability. However, existing cylinder liner honing devices have relatively simple structures, making workpiece clamping inconvenient. Furthermore, the workpiece's fixation during the finishing process is not reliable enough, leading to potential leakage of the honing fluid and resulting in an unsatisfactory surface finish. Therefore, there is an urgent need to design a cylinder liner extrusion honing finishing fixture to address the technical challenges of workpiece clamping and honing. Utility Model Content
[0003] In view of the above situation, this utility model provides a cylinder liner extrusion honing finishing fixture, which simplifies the clamping and honing operation of cylinder liner workpieces and ensures the finishing effect of the cylinder liner inner hole.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A cylinder liner extrusion honing finishing fixture includes an upper cavity and a lower cavity for vertically extruding and clamping the cylinder liner, and a fixture body for mounting and connecting to a honing device. A work station hole is provided at the lower front part of the fixture body, and the lower cavity is fitted into the work station hole.
[0006] A vertical slide is fixedly installed above the rear of the clamping body. A linear guide rail is fixedly laid on the front side of the vertical slide. A lifting slide is installed on the front side of the linear guide rail. The lifting slide is slidably connected to the linear guide rail via a linear slider. A vertically installed lifting telescopic cylinder is installed above the vertical slide. The lower end of the telescopic rod of the lifting telescopic cylinder is connected to the top of the lifting slide. The upper cavity is vertically and flexibly installed and connected to the front side of the lifting slide.
[0007] Furthermore, the upper cavity and the lower cavity are respectively provided with cylindrical upper chamber and lower chamber at their centers. The diameters of the upper chamber and the lower chamber are equal to the inner diameter of the cylinder liner, and the cylinder liner is coaxially and vertically clamped between the upper chamber and the lower chamber.
[0008] Furthermore, the lower end of the upper chamber and the upper end of the lower chamber are respectively provided with upper and lower stop ports that match the upper and lower ends of the cylinder liner. Upper and lower sealing rings, corresponding to the upper and lower ends of the cylinder liner, are respectively embedded in the upper and lower stop ports. The sealed cavity formed by the lower chamber, cylinder liner, and upper chamber is used to hold the grinding fluid.
[0009] Furthermore, a lower piston is slidably disposed coaxially within the lower chamber, and a vertically disposed lifting telescopic cylinder is coaxially mounted below the lower chamber. The upper end of the telescopic rod of the lifting telescopic cylinder extends into the lower chamber and is connected to the lower piston.
[0010] Furthermore, an upper piston is coaxially slidably disposed in the upper chamber, and a vertically disposed pressing telescopic cylinder is coaxially mounted above the upper chamber. The lower end of the telescopic rod of the pressing telescopic cylinder extends into the upper chamber and is connected to the upper piston.
[0011] Preferably, the lifting telescopic cylinder, the jacking telescopic cylinder, and the pressing telescopic cylinder are all hydraulic cylinders; the lifting telescopic cylinder is used to drive the upper cavity and the pressing telescopic cylinder to move up and down, and the telescopic stroke of the pressing telescopic cylinder and the jacking telescopic rod is sufficient to drive the upper piston and the lower piston to reciprocate through the cylinder liner.
[0012] This utility model also includes other components that enable its normal use, all of which are conventional means in the field. In addition, devices or components not limited in this utility model, such as honing devices, cylinder liners, clamping bodies, hydraulic cylinders, linear guides, linear sliders, etc., all adopt existing technologies in the field.
[0013] The beneficial effects of this utility model are as follows:
[0014] The cylinder liner extrusion honing and finishing fixture provided by this utility model makes the clamping of the cylinder liner workpiece simpler and more convenient, the workpiece clamping and fixing is more secure and reliable, the sealing between the cylinder liner workpiece and the upper and lower chambers of the fixture is better, which can effectively avoid the leakage of grinding fluid, improve the finishing effect of the cylinder liner workpiece, and ensure the grinding smoothness of the cylinder liner inner hole. Attached Figure Description
[0015] Figure 1 This is a front view schematic diagram of the cylinder liner extrusion honing and finishing fixture in the embodiment.
[0016] Figure 2 for Figure 1 A side view of the fixture for the extrusion honing and finishing of the cylinder liner.
[0017] Figure 3 for Figure 1 A cross-sectional view of the internal structure of the cylinder liner extrusion honing and finishing fixture along line AA. Detailed Implementation
[0018] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.
[0019] It should be noted that the terms "upper," "lower," "front," "back," "inner," and "outer," which indicate direction or positional relationship, are based on the attached drawings and are used only for ease of description.
[0020] Example
[0021] like Figure 1-3 As shown, the cylinder liner extrusion honing finishing fixture includes an upper cavity 1 and a lower cavity 2 for vertically extruding and clamping the cylinder liner 20, and a fixture body 3 for mounting and connecting to the honing device. A work station hole 4 is provided at the lower front part of the fixture body, and the lower cavity is installed and sleeved in the work station hole.
[0022] A vertical slide 5 is fixedly installed above the rear of the clamp body. An HGH20CA type linear guide rail 6 is fixedly laid on the front side of the vertical slide. A lifting slide 7 is provided on the front side of the linear guide rail. The lifting slide is slidably connected to the linear guide rail through a linear slider 8.
[0023] A vertically arranged lifting telescopic cylinder 9 is installed above the vertical slide. The lower end of the telescopic rod of the lifting telescopic cylinder is connected to the top of the lifting slide. The upper cavity is vertically and flexibly installed and connected to the front side of the lifting slide.
[0024] The upper cavity and the lower cavity are respectively provided with a cylindrical upper chamber 10 and a lower chamber 11 at their centers. The diameters of the upper chamber and the lower chamber are equal to the inner diameter of the cylinder liner. The cylinder liner is coaxially and vertically clamped between the upper chamber and the lower chamber.
[0025] The lower end of the upper chamber and the upper end of the lower chamber are respectively provided with an upper stop 12 and a lower stop 13 that match the upper and lower ends of the cylinder liner. An upper sealing ring 14 and a lower sealing ring 15, corresponding to the upper and lower ends of the cylinder liner, are respectively embedded in the upper and lower stop. The sealed cavity formed by the lower chamber, cylinder liner, and upper chamber is filled with grinding fluid. The upper and lower sealing rings ensure a good seal between the cylinder liner and the upper and lower cavities, effectively preventing leakage of the grinding fluid.
[0026] A lower piston 16 is slidably disposed coaxially in the lower chamber, and a vertically disposed lifting telescopic cylinder 17 is coaxially installed below the lower chamber. The upper end of the telescopic rod of the lifting telescopic cylinder extends into the lower chamber and is connected to the lower piston.
[0027] An upper piston 18 is slidably disposed coaxially in the upper chamber, and a vertically disposed pressing telescopic cylinder 19 is coaxially mounted above the upper chamber. The lower end of the telescopic rod of the pressing telescopic cylinder extends into the upper chamber and is connected to the upper piston.
[0028] The lifting telescopic cylinder, the jacking telescopic cylinder, and the pressing telescopic cylinder are all hydraulic cylinders. Each hydraulic cylinder is externally connected to the hydraulic system of the honing device. The honing device and its hydraulic system both adopt existing technology, which will not be described in detail here.
[0029] The lifting telescopic cylinder is used to drive the upper cavity and the pressing telescopic cylinder to move up and down. The telescopic stroke of the pressing telescopic cylinder and the lifting telescopic rod is sufficient to drive the upper piston and the lower piston to reciprocate through the cylinder liner, while pushing the grinding fluid to grind the inner hole of the cylinder liner.
[0030] The technical solution of this utility model is not limited to the specific embodiments described above. Without departing from the scope and spirit of the described embodiments, many modifications and changes will be obvious to those skilled in the art. Any technical modifications made within the spirit and principles of this utility model shall fall within the protection scope of this utility model.
Claims
1. A cylinder liner extrusion honing and finishing fixture, characterized in that: The device includes an upper cavity and a lower cavity for vertically clamping a cylinder liner, and a clamping body for mounting and connecting to a honing device. A work station hole is provided at the lower front of the clamping body, and the lower cavity is fitted into the work station hole. A vertical slide is fixedly installed above the rear of the clamping body. A linear guide rail is fixedly laid on the front side of the vertical slide. A lifting slide is provided on the front side of the linear guide rail, and the lifting slide is slidably connected to the linear guide rail via a linear slider. A vertically positioned lifting and telescopic cylinder is installed above the vertical slide, and the lower end of the telescopic rod of the lifting and telescopic cylinder is connected to the top of the lifting slide. The upper cavity is vertically and flexibly mounted and connected to the front side of the lifting slide.
2. The cylinder liner extrusion honing and finishing fixture according to claim 1, characterized in that: The upper cavity and the lower cavity each have a corresponding cylindrical upper chamber and lower chamber at their center. The diameters of the upper chamber and the lower chamber are equal to the inner diameter of the cylinder liner. The cylinder liner is coaxially and vertically clamped between the upper chamber and the lower chamber.
3. The cylinder liner extrusion honing and finishing fixture according to claim 2, characterized in that: The lower end of the upper chamber and the upper end of the lower chamber are respectively provided with an upper stop and a lower stop that match the upper and lower ends of the cylinder liner. The upper stop and the lower stop are respectively fitted with an upper sealing ring and a lower sealing ring that correspond to the upper and lower ends of the cylinder liner.
4. The cylinder liner extrusion honing and finishing fixture according to claim 3, characterized in that: A lower piston is slidably disposed coaxially within the lower chamber, and a vertically disposed lifting telescopic cylinder is coaxially mounted below the lower chamber. The upper end of the telescopic rod of the lifting telescopic cylinder extends into the lower chamber and is connected to the lower piston.
5. The cylinder liner extrusion honing and finishing fixture according to claim 4, characterized in that: An upper piston is slidably mounted coaxially in the upper chamber, and a vertically mounted pressing telescopic cylinder is coaxially mounted above the upper chamber. The lower end of the telescopic rod of the pressing telescopic cylinder extends into the upper chamber and is connected to the upper piston.
6. The cylinder liner extrusion honing and finishing fixture according to claim 5, characterized in that: The lifting telescopic cylinder, the jacking telescopic cylinder, and the pressing telescopic cylinder are all hydraulic cylinders.