A single link honing device within a chain

Abstract

A single section boring and grinding device in a chain relates to sleeve chain manufacturing equipment technical field, including cover plate, side plate, bottom plate and boring cutter, the bottom plate upper surface opposite is equipped with 2 side plates, 2 side plates top is equipped with cover plate, between cover plate, side plate and bottom plate constitutes processing chamber, the cover plate top is equipped with the through-hole for boring cutter to pass through, the size of the processing chamber is matched with the size of single section in chain, the size of the boring cutter is matched with the sleeve inner hole size of single section, the boring cutter top is connected with the drive mechanism for driving boring cutter rotation.This device realizes the collaborative optimization of sleeve inner hole super-precision surface and functional oil storage structure through precision machining, reduces the frictional resistance, improves the oil film retention capacity at the same time, fundamentally prolongs the durability of sleeve chain.

Description

Technical Field

[0001] This invention relates to the technical field of sleeve chain manufacturing equipment, specifically to a single-link boring and grinding device for the chain. Background Technology

[0002] Sleeve chains, as common transmission components, are widely used in various industries such as machinery, transportation, and agriculture. During the operation of sleeve chains, friction between the pin and the sleeve is one of the main causes of sleeve wear.

[0003] Traditional bushings are manufactured by drilling. The cutting vibration during drilling can easily cause ellipticity errors in the bushing, resulting in stress concentration during chain operation, accelerating the wear of abrasive grains on the inner wall of the bushing, and reducing the service life of the bushing. This processing method also tends to lead to high roughness of the inner wall of the bushing, and microscopic peaks can cause boundary lubrication failure, significantly increasing the coefficient of dry friction. Especially under frequent start-stop conditions, due to the above reasons, the lubricating oil cannot provide sufficient lubrication, and the dry friction phenomenon leads to rapid damage and failure of the bushing.

[0004] Boring (also known as honing) is a method of finishing holes using an oilstone embedded in a honing head. It is mainly used to improve the dimensional accuracy and surface quality of holes. However, there is currently a lack of equipment for sleeve boring of single links in chains. Utility Model Content

[0005] This invention discloses a single-link boring and grinding device for a chain, the purpose of which is to provide a boring and grinding device that can process single links inside a chain. This device achieves synergistic optimization of the ultra-precise surface of the inner hole of the sleeve and the functional oil storage structure through precision machining, thereby reducing frictional resistance and improving the oil film retention capacity, fundamentally extending the durability of the sleeve chain.

[0006] To achieve the above objectives, the technical solution of this invention is as follows:

[0007] A chain internal single-link boring and grinding device includes a cover plate, side plates, a base plate, and a boring tool. Two side plates are arranged opposite each other on the upper surface of the base plate, and a cover plate is fixedly mounted on the top of the two side plates. A machining chamber is formed between the cover plate, side plates, and base plate. The top of the cover plate has a through hole for the boring tool to pass through. The size of the machining chamber matches the size of the chain internal single link. The size of the boring tool matches the inner hole size of the sleeve of the internal single link. The top of the boring tool is connected to a drive mechanism for driving the boring tool to rotate.

[0008] Preferably, the boring and grinding device is fixedly mounted on the worktable, the driving mechanism is a drive motor, the output shaft end of the drive motor is fixedly connected to the top end of the boring tool, and the drive motor is connected to the worktable through a liftable bracket.

[0009] Preferably, the inner wall of the through hole is provided with oil guide grooves at equal intervals around the axis to guide the cooling oil to the boring tool and the inner wall of the sleeve. The oil guide grooves are semi-circular and extend through the upper and lower end faces of the cover plate.

[0010] Preferably, the upper surface of the base plate is provided with multiple oil unloading grooves.

[0011] Preferably, the cover plate is made of resin material, and the side plate height H1 and the inner single section height H2 satisfy the relationship: H1=1.07H2, with a deviation range of ±0.5%; the relationship between the radius R2 of the oil guide groove and the radius R1 of the through hole satisfies: 0.1R1<R2<0.2R1.

[0012] Preferably, a limiting component is provided on the rear side of the upper surface of the base plate. The limiting component includes a limiting block that is fixedly connected to the base plate and the side plate. The front end of the limiting block is provided with an arc-shaped protrusion for engaging the inner surfaces of the two inner chain plates at one end of the inner section and engaging with the rollers or sleeves of the inner section. The front end of the limiting block above and below the arc-shaped protrusion is an arc-shaped surface, which is used to engage the heads of the two inner chain plates of the inner section.

[0013] Preferably, the deviation of the boring bar axis, the through hole axis, and the inner hole axis of the inner single-section sleeve is ≤0.01mm.

[0014] This novel chain-internal single-link boring and grinding device has the following beneficial effects:

[0015] 1. This new design effectively reduces the roughness of the inner bore of the inner single-section sleeve, thereby reducing frictional resistance. The smooth inner bore surface allows for smoother rotation of the chain pins, reducing wear and extending chain life. The uniform microstructure formed by honing helps improve oil film retention, enhances wear resistance, and better retains lubricant, reducing direct metal-to-metal contact and wear. High-precision machining of the sleeve inner bore ensures more accurate fit of chain components, reduces motion imbalance, thereby reducing stress concentration and fatigue failure, and improving durability.

[0016] 2. The cover plate and oil guide grooves provide comprehensive cooling of the machining area, effectively suppressing thermal deformation during boring and significantly improving the geometric accuracy of the sleeve's inner bore. The low-temperature environment prevents surface softening due to tempering, and while ensuring machining accuracy, the boring tool can create a uniform micro-pit structure on the inner wall of the sleeve, providing excellent lubricant film storage. Furthermore, the elimination of the independent drilling process not only improves material utilization but also shortens the machining cycle.

[0017] 3. This invention also provides a device for boring and grinding the inner wall of an inner single-section sleeve, filling a gap in the field. Attached Figure Description

[0018] Figure 1This is a three-dimensional diagram of a single-link boring and grinding device within a chain;

[0019] Figure 2 This is a top view of a single-link boring and grinding device inside a chain;

[0020] Figure 3 This is a front view of a single-link boring and grinding device inside a chain;

[0021] Figure 4 This is a top view of the new limiting component in conjunction with the inner single section;

[0022] Figure 5 This is a top view of the novel limiting component;

[0023] Figure 6 This is a partial side sectional view of the new limiting component and its cooperation with the inner single section.

[0024] 1. Through hole; 2. Cover plate; 3. Inner single section; 4. Base plate; 5. Oil unloading groove; 6. Boring tool; 61. Tool groove; 7. Oil guide groove; 8. Side plate; 9. Limiting component; 91. Arc-shaped protrusion; 92. Limiting block. Detailed Implementation

[0025] The following is a detailed description of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this invention.

[0027] This invention relates to a single-link boring and grinding device for a chain, such as... Figure 1-6 As shown, the assembly includes a cover plate 2, side plates 8, a base plate 4, and a boring bar 6. Two side plates 8 are arranged opposite each other on the upper surface of the base plate 4. The cover plate 2 is fixedly attached to the top of the two side plates 8, forming a machining chamber between the cover plate 2, side plates 8, and base plate 4. The top of the cover plate 2 has a through hole 1 for the boring bar 6 to pass through. The size of the machining chamber matches the size of the inner link 3 of the chain. The size of the boring bar 6 matches the inner hole size of the sleeve of the inner link. The top of the boring bar 6 is connected to a drive mechanism (a common structure, not shown in the figure) for driving the boring bar to rotate.

[0028] In this embodiment, as Figure 1As shown, the boring and grinding device is fixedly mounted on the worktable (a common structure, not shown in the figure). The driving mechanism is a drive motor (a common structure, not shown in the figure). The output shaft end of the drive motor is fixedly connected to the top of the boring tool to drive the boring tool to rotate. The drive motor is connected to the worktable through a liftable bracket (a common structure, not shown in the figure). When the inner section reaches the working position, the boring tool descends to perform boring and grinding on the inner wall of the sleeve.

[0029] In this embodiment, as Figure 1 , 2 As shown, the inner wall of the through hole 1 is evenly distributed around the axis with oil guide grooves 7 for guiding cooling oil to the boring bar 6 and the inner wall of the sleeve. The oil guide grooves 7 are semi-circular and penetrate the upper and lower end faces of the cover plate 2. Due to the high-speed rotation and cutting force, the friction between the inner section and the boring bar will generate a certain amount of heat, which will affect the wear resistance of the tool and the surface quality of the workpiece. To avoid material deformation or surface damage caused by overheating, cooling oil enters from the oil guide grooves 7 to reduce the high temperature generated during boring.

[0030] In this embodiment, as Figure 1 , 2 As shown, the upper surface of the base plate 4 is provided with multiple oil discharge grooves 5, the bottom of which has a certain inclination to directionally discharge excess lubricating oil and iron filings within the lubricating oil. Iron filings, grinding shavings, and other debris generated during boring and grinding need to be removed promptly to prevent them from interfering with the machining process. The cooling oil not only provides cooling but also removes iron filings generated during machining, ensuring a clean machining area and improving machining accuracy.

[0031] In this embodiment, as Figure 1 , 2 As shown in Figure 3, the cover plate 2 is made of resin material (which has a certain vibration damping effect to avoid vibration during the processing of the inner single section). The height H1 of the side plate 8 and the height H2 of the inner single section 3 satisfy the relationship: H1=1.07H2, with a deviation range of ±0.5%. The relationship between the radius R2 of the oil guide groove 7 and the radius R1 of the through hole 1 satisfies: 0.1R1<R2<0.2R1.

[0032] In this embodiment, as Figure 4 , 5As shown in Figure 6, a limiting component 9 is provided on the rear side of the upper surface of the base plate 4. The limiting component 9 includes a limiting block 92 fixedly connected to the base plate 4 and the side plate 8. The front end of the limiting block 92 is provided with an arc-shaped protrusion 91 for engaging the inner surfaces of the two inner chain plates at one end of the inner single section 3 and engaging with the rollers or sleeves of the inner single section. The front end of the limiting block above and below the arc-shaped protrusion 91 is an arc-shaped surface, which is used to engage the heads of the two inner chain plates of the inner single section 3. The arc-shaped protrusion restricts the longitudinal movement of the inner section during machining, and together with the arc-shaped surface, restricts the position of the sleeve at one end of the inner section, ensuring the stability of the boring tool when machining the inner hole of the sleeve, thereby ensuring the machining effect. The other end of the inner section can be squeezed into the machining chamber through a clamping device (for example, the limiting component 9 connected to the cylinder is engaged with the front end of the inner section and pushed into the machining chamber, so that the other end of the inner section is engaged with the limiting component on the rear side), avoiding the displacement of the inner section in the front and rear directions. The gap between the left and right ends of the inner section and the side plate is maintained within the allowable error range, thereby facilitating the entry of the inner section into the machining chamber.

[0033] Based on this, the deviation of the axis of boring tool 6, the axis of through hole 1, and the axis of the inner hole of inner single-section sleeve 3 is ≤0.01mm.

Claims

1. A single-link boring and grinding device for a chain, characterized in that: The device includes a cover plate, side plates, a base plate, and a boring bar. Two side plates are arranged opposite each other on the upper surface of the base plate, and a cover plate is fixedly attached to the top of the two side plates. A machining chamber is formed between the cover plate, side plates, and base plate. The top of the cover plate has a through hole for the boring bar to pass through. The size of the machining chamber matches the size of a single link in the chain. The size of the boring bar matches the inner hole size of the sleeve in the single link. A drive mechanism for driving the boring bar to rotate is connected to the top of the boring bar.

2. The chain-internal single-link boring and grinding device as described in claim 1, characterized in that: The boring and grinding device is fixedly mounted on the worktable. The driving mechanism is a drive motor. The output shaft end of the drive motor is fixedly connected to the top of the boring tool. The drive motor is connected to the worktable through a liftable bracket.

3. The chain-internal single-link boring and grinding device as described in claim 2, characterized in that: The inner wall of the through hole is equally spaced around the axis to guide the cooling oil to the boring tool and the inner wall of the sleeve. The oil guide groove is semi-circular and runs through the upper and lower end faces of the cover plate.

4. The chain-internal single-link boring and grinding device as described in claim 3, characterized in that: The upper surface of the base plate is provided with multiple oil unloading grooves.

5. The chain-internal single-link boring and grinding device as described in claim 4, characterized in that: The cover plate is made of resin material. The height H1 of the side plate and the height H2 of the inner single section satisfy the relationship: H1=1.07H2, with a deviation range of ±0.5%. The radius R2 of the oil guide groove and the radius R1 of the through hole satisfy the relationship: 0.1R1<R2<0.2R1.

6. The chain-internal single-link boring and grinding device as described in claim 5, characterized in that: The bottom plate has a limiting component on its rear side. The limiting component includes a limiting block that is fixedly connected to the bottom plate and the side plate. The front end of the limiting block has an arc-shaped protrusion for engaging the inner surfaces of the two inner chain plates at one end of the inner section and engaging with the rollers or sleeves of the inner section. The front end of the limiting block above and below the arc-shaped protrusion is an arc-shaped surface, which is used to engage the heads of the two inner chain plates of the inner section.

7. The chain-internal single-link boring and grinding device as described in claim 6, characterized in that: The deviations of the boring bar axis, through hole axis, and inner single-section sleeve inner hole axis are ≤0.01mm.

Images