A lubricating device for bolt processing
By designing a lubrication device for bolt processing, and using a rotary cylinder to drive the oil injection assembly to precisely align with the critical friction area of the bolt, the problem of low lubrication efficiency in existing technologies has been solved, achieving uniform lubrication and high-efficiency production.
Patent Information
- Application Number
- CN202522101466.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
The current lubrication process in bolt processing is inefficient and difficult to adapt to the needs of mass production. Furthermore, uneven lubrication can easily lead to assembly problems.
A lubrication device for bolt processing was designed, comprising a base, a lubrication component, and an oil spraying component. A rotating cylinder drives a fixed frame to precisely align the oil spraying component with the critical friction area of the bolt, thereby achieving zone-by-zone oil supply and avoiding lubrication of non-functional areas.
It improves lubrication efficiency, ensures that the lubricating oil evenly covers the key friction areas, avoids over-coating and lubrication dead zones, and improves processing efficiency and bolt assembly accuracy.
Smart Images

Figure CN224672960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bolt processing, and specifically to a lubrication device for bolt processing. Background Technology
[0002] In bolt manufacturing, lubrication is a crucial process for ensuring the accuracy of subsequent assembly, corrosion resistance, and service life of the bolts. The threaded engagement surface and the lower surface of the bolt head are the core stress and friction areas during subsequent assembly, requiring uniform and precise lubrication coverage. Non-functional areas (such as the top surface of the head and the non-contact section of the smooth shank) should avoid redundant lubrication to prevent wrench slippage or impurity accumulation during subsequent assembly. Currently, bolt lubrication often involves manual application using a handheld spray gun or brush, which is extremely inefficient and unsuitable for mass production needs. Utility Model Content
[0003] This invention provides a lubrication device for bolt processing to address the problems of existing technologies.
[0004] The objective of this utility model can be achieved through the following technical solution: A lubrication device for bolt processing includes a base and a lubrication assembly. The lubrication assembly includes a base, a first rotary cylinder, a second rotary cylinder, a first fixing frame, a second fixing frame, and a bolt fixture. The base is fixed on the base. The bolt fixture is located in the middle of the base and has a bolt placement groove at its upper end. The first rotary cylinder and the second rotary cylinder are symmetrically fixed on both sides inside the base. The first fixing frame is installed on the rotating part of the first rotary cylinder, and the second fixing frame is installed on the rotating part of the second rotary cylinder. An oil spraying assembly is installed on the first fixing frame, with the first spray nozzle facing the lower surface of the bolt head. An oil spraying assembly is installed on the second fixing frame, with the second spray nozzle facing the threaded part of the bolt.
[0005] As a further improvement, the lubrication assembly is provided in two sets on the base.
[0006] In a further improvement, a baffle plate 1 that blocks the first oil spraying component is fixed to the upper end of the first fixing frame, and a baffle plate 2 that blocks the second oil spraying component is fixed to the upper end of the second fixing frame.
[0007] A further improvement is that the opening diameter of the bolt placement groove is increased upwards.
[0008] In a further improvement, the second oil injection assembly is provided with three sets of nozzles spaced apart, and the second nozzle is arranged perpendicular to the bolt, while the first nozzle of the first oil injection assembly is arranged at an angle.
[0009] Compared with the prior art, the advantages of this utility model for lubrication device in bolt processing are as follows: Oil spray assembly one and spray head one are only for the lower surface of the bolt head, while oil spray assembly two and spray head two are only for the threaded part. This avoids lubrication of non-functional areas such as the top surface of the head and the non-contact section of the smooth rod, and realizes zoned oil supply, thus eliminating the problem of over-coating from a structural point of view. At the same time, the directional area oil spraying of the oil spray assembly can ensure that the lubricating oil acts directly on the key friction area. Attached Figure Description
[0010] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a partially enlarged structural schematic diagram of the present invention. Figure 3 for Figure 2 Schematic diagram of the structure with baffle removed In the diagram, 1-base, 2-lubrication assembly, 21-base, 22-rotary cylinder one, 23-rotary cylinder two, 24-fixed bracket one, 241-baffle one, 25-fixed bracket two, 251-baffle two, 26-bolt fixture, 261-bolt placement slot, 27-oil spray assembly one, 271-spray head one, 28-oil spray assembly two, 281-spray head two. Detailed Implementation
[0011] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0012] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.
[0013] Example 1 A lubrication device for bolt processing includes: a base 1 and a lubrication assembly 2. The lubrication assembly 2 includes a base 21, a first rotary cylinder 22, a second rotary cylinder 23, a first fixing frame 24, a second fixing frame 25, and a bolt fixture 26. The base 21 is fixed on the base 1. The bolt fixture 26 is disposed in the middle of the base 21 and has a bolt placement groove 261 at its upper end. The first rotary cylinder 22 and the second rotary cylinder 23 are symmetrically fixed on both sides inside the base 21. The first fixing frame 24 is installed on the rotating part of the first rotary cylinder 22. The second fixing frame 25 is installed on the rotating part of the second rotary cylinder 23. The first oil spray assembly 27 is installed on the first fixing frame 24 and the first spray head 271 is positioned facing the lower surface of the bolt head. The second oil spray assembly 28 is installed on the second fixing frame 25 and the second spray head 281 is positioned facing the threaded part of the bolt.
[0014] like Figures 1-3 As shown, the working principle of this utility model is as follows: The bolt placement groove 261 at the upper end of the bolt fixture 26 can fix the bolt to be lubricated in a preset position, ensuring that the threaded part and the lower surface of the head of the bolt are within the alignment range of the oil spraying assembly.
[0015] Rotary cylinder 1 22 and rotary cylinder 23, symmetrically arranged inside the base 21, drive the fixed frame 1 24 and fixed frame 25 to rotate, respectively. During operation, the rotary cylinders drive the fixed frames to rotate around the rotating part to a preset angle, so that the nozzle 271 of the oil spraying assembly 27 on the fixed frame 1 is precisely aligned with the lower surface of the bolt head, and the nozzle 281 of the oil spraying assembly 28 on the fixed frame 2 is precisely aligned with the threaded part of the bolt. After lubrication is completed, the rotary cylinders drive the fixed frames to reset, which facilitates the removal and placement of bolts.
[0016] The design of oil assembly one and spray head one is only for the lower surface of the bolt head, while oil spray assembly two and spray head two are only for the threaded part. This avoids lubrication of non-functional areas such as the top surface of the head and the non-contact section of the smooth rod, and realizes zoned oil supply, thus eliminating the problem of over-coating from a structural point of view. At the same time, the directional area spraying of the oil spray assembly can ensure that the lubricating oil acts directly on the key friction area.
[0017] As a further preferred embodiment, the lubrication assembly 2 is provided in two sets on the base 1, enabling dual-station operation and nearly doubling the processing efficiency, which is suitable for mass production scenarios of small and medium-sized bolts.
[0018] As a further preferred embodiment, a baffle 241 for blocking the oil spraying assembly 27 is fixed to the upper end of the first fixing bracket 24, and a baffle 251 for blocking the second oil spraying assembly 28 is fixed to the upper end of the second fixing bracket 25. When the oil spraying assembly is working, even if it is directional oil spraying, lubricating oil may still splash. The first baffle and the second baffle are respectively set for the first and second oil spraying assemblies, and are positioned higher than the nozzle of the oil spraying assembly and cover the oil spraying direction range of the oil spraying assembly. When lubricating oil splashes, the baffle will directly block the splashed oil droplets and prevent the oil droplets from splashing onto other parts of the base.
[0019] As a further preferred embodiment, the opening diameter of the bolt placement groove 211 is increased upwards. The funnel-shaped structure, wider at the top and narrower at the bottom, serves a guiding function. During loading, even if there is a slight deviation between the bolt axis and the groove axis, the bottom of the bolt will slide along the inclined inner wall of the placement groove into the bottom of the groove, automatically correcting its position.
[0020] As a further preferred embodiment, the second oil spray assembly 28 is provided in three sets at intervals, with the second spray head 281 perpendicular to the bolt. The first spray assembly 27 has its first spray head 271 angled. The bolt thread has a ring structure. The three sets of oil spray assemblies are distributed at intervals along the circumference of the bolt, and the second spray head is perpendicular to the bolt axis. This allows oil to be sprayed onto the thread from three different directions simultaneously, ensuring that every tooth surface and every gap of the thread is covered with lubricating oil, eliminating any lubrication dead zones. The first spray head is angled, with the spray direction forming a certain angle with the lower surface of the head. This allows the lubricating oil to be sprayed directly onto the lower surface of the head, ensuring that the lubricating oil is evenly adhered to the entire ring contact surface and avoiding edge leakage.
[0021] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A lubrication device for bolt processing, characterized in that, include: The lubrication assembly includes a base, a first rotary cylinder, a second rotary cylinder, a first fixing frame, a second fixing frame, and a bolt fixture. The base is fixed to the base, and the bolt fixture is located in the middle of the base with a bolt placement groove at its upper end. The first and second rotary cylinders are symmetrically fixed on both sides inside the base. The first fixing frame is installed on the rotating part of the first rotary cylinder, and the second fixing frame is installed on the rotating part of the second rotary cylinder. The first fixing frame is equipped with an oil spraying assembly, with the first spray nozzle facing the lower surface of the bolt head. The second fixing frame is equipped with an oil spraying assembly, with the second spray nozzle facing the threaded part of the bolt.
2. The lubrication device for bolt processing according to claim 1, characterized in that, Two sets of the lubrication components are provided on the base.
3. The lubrication device for bolt processing according to claim 1, characterized in that, The upper end of the first fixing frame is fixed with a baffle plate that blocks the first oil spraying component, and the upper end of the second fixing frame is fixed with a baffle plate that blocks the second oil spraying component.
4. A lubrication device for bolt processing according to claim 1, characterized in that, The opening diameter of the bolt placement groove is increased upwards.
5. A lubrication device for bolt processing according to claim 1, characterized in that, The second oil injection assembly is provided with three sets at intervals and the second spray head is set perpendicular to the bolt, while the first spray head of the first oil injection assembly is set at an angle.