Fixing device for milling groove of hexagon screw
By using a combination of inverted trapezoidal positioning holes and pressure plates for fixing, the problem of hexagonal screws rotating or shifting during milling is solved, achieving stable screw fixing and improving machining accuracy and yield.
Patent Information
- Application Number
- CN202423323613.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing hexagonal screw milling and fixing devices are prone to screw rotation or displacement during processing, affecting processing accuracy and quality.
The screw is fixed by a combination of inverted trapezoidal positioning holes and pressure plates. The inverted trapezoidal positioning holes make close contact with the head of the hexagonal screw to increase friction, and the pressure plate and fixing plate clamp the threaded section from the top and bottom to achieve stable fixing of the screw.
This ensures that the hexagonal screws do not deflect or slip during the milling process, improving the quality and consistency of the cross-slot machining, reducing scrap rate, and increasing production efficiency.
Smart Images
Figure CN223642837U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of spare and parts processing, especially hexagonal screw groove milling fixing device. BACKGROUND
[0002] In the mechanical manufacturing and maintenance industry, hexagonal screws are widely used due to their simple structure, high strength, and easy assembly. In order to meet different application requirements, additional processing of hexagonal screws is often needed, such as cross-slotting in the head or other forms of milling operation. However, during these processing procedures, how to ensure the stability of the hexagonal screw is an important issue.
[0003] The existing hexagonal screw groove milling fixing device mainly relies on a simple clamping mechanism to achieve screw positioning. In traditional fixing disc designs, the contact surface between the screw and the fixing disc is usually small, and when a large milling force is applied, the screw is prone to rotation or displacement. Especially when cross-slots are punched, if the screw rotates slightly, it will cause the cross-slot to be skewed, deviating from the predetermined position, and even not passing through the center, affecting product quality and increasing the scrap rate. SUMMARY
[0004] The utility model intends to provide hexagonal screw groove milling fixing device, to solve the problem that the existing hexagonal screw is easy to deflect when milling.
[0005] The hexagonal screw groove milling fixing device in the present scheme includes a fixing disc, the outer edge of the fixing disc is provided with a snap ring, the snap ring is uniformly provided with a plurality of positioning holes, the positioning holes are inverted trapezoidal, a fixing shaft is arranged on the fixing disc, and a pressure plate is detachably connected to the fixing shaft.
[0006] The working principle and beneficial effects of the scheme are as follows: when in use, first, the hexagonal head of the hexagonal screw is accurately placed into the inverted trapezoidal positioning hole specially designed for the screw. The shape of the positioning hole perfectly matches the head of the hexagonal screw, and the preliminary positioning is realized through close contact to prevent the screw from rotating on the horizontal plane; the design of the positioning hole not only considers the matching in size, but also specially adopts an inverted trapezoidal structure to maximize the contact area between the screw head and the hole wall, thereby significantly increasing the friction. This design effectively avoids the deflection or sliding phenomenon of the screw when bearing the milling force. Next, the pressure plate is connected with the fixed shaft and adjusted to the appropriate position. The pressure plate and the fixed plate jointly clamp the threaded section of the hexagonal screw from the upper and lower directions. This process is completed through a mechanical locking mechanism, ensuring the consistency and stability of the clamping force. After the above steps, the hexagonal screw is stably fixed in place and can remain stationary even in the face of a large milling groove force. At this time, the fixed shaft is fixed on the milling groove processing seat, and the cross groove can be safely and accurately processed, ensuring that the groove shape is accurately located at the center of the screw head and does not deviate. Since the position and stability of the screw are strictly controlled during the entire fixing process, the quality and consistency of the cross groove processing are greatly improved, the generation of waste products is reduced, and the overall production efficiency and yield are improved.
[0007] Further, a plurality of grooves are arranged around the fixed shaft on the fixed plate, and a plurality of convex shafts are arranged on the pressure plate. When the pressure plate is fixed, the convex shafts are clamped in the grooves to position the pressure plate and the fixed plate and prevent the pressure plate from falling off.
[0008] Further, the pressure plate is slidably connected with the fixed shaft. This arrangement facilitates the disassembly of the pressure plate and the fixed shaft.
[0009] Further, the positioning hole gradually decreases from the outer edge of the fixed plate to the center of the fixed plate. This arrangement can position hexagonal bolts of different sizes and fix hexagonal bolts of different sizes in combination with the pressure of the pressure plate. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a structural schematic view of the hexagonal screw milling groove fixing device.
[0011] Figure 2 It is Figure 1 It is a structural schematic view of the fixed plate after the pressure plate is removed.
[0012] Figure 3 It is a structural schematic view of the fixed plate.
[0013] Figure 4 It is a structural schematic view of the pressure plate.
[0014] Figure 5This is a schematic diagram of the fixed disk structure in Example 2. Detailed Implementation
[0015] The following detailed explanation illustrates the specific implementation methods:
[0016] The reference numerals in the accompanying drawings include: 1. fixed plate, 2. retaining ring, 3. positioning hole, 4. pressure plate, 5. fixed shaft, 6. groove, and 7. convex shaft.
[0017] The basic implementation examples are as follows: Figures 1-4 As shown: A fixing device for milling grooves of hexagonal screws includes a fixing plate 1. The outer edge of the fixing plate 1 is provided with a retaining ring 2. The retaining ring 2 is evenly distributed with multiple positioning holes 3. The positioning holes 3 are inverted trapezoidal. The fixing plate 1 is provided with a fixing shaft 5. A pressure plate 4 is slidably connected to the fixing shaft 5. The fixing plate 1 is provided with multiple grooves 6. The multiple grooves 6 are arranged around the fixing shaft 5. The pressure plate 4 is provided with multiple convex shafts 7.
[0018] First, precisely place the hexagonal head of the hexagonal screw into the inverted trapezoidal locating hole 3, which is specifically designed for this screw. The shape of this locating hole 3 perfectly matches the head of the hexagonal screw, achieving initial positioning through tight contact and preventing the screw from rotating on the horizontal plane. The design of the locating hole 3 not only considers dimensional matching but also employs an inverted trapezoidal structure to maximize the contact area between the screw head and the hole wall, thereby significantly increasing friction. This design effectively prevents the screw from deflecting or slipping when subjected to milling forces. Next, insert the convex shaft 7 on the pressure plate 4 into the groove 6 on the fixed plate 1, connecting the pressure plate 4 to the fixed shaft 5, and adjust it to the appropriate position. The pressure plate 4 and the fixed plate 1 work together to firmly clamp the threaded section of the hexagonal screw from both above and below. This process is completed through a mechanical locking mechanism, ensuring the consistency and stability of the clamping force. After the above steps, the hexagonal screw is firmly fixed in place and can remain stationary even when faced with large milling forces. At this point, fixing the fixed shaft 5 to the milling machine base allows for milling, ensuring the precise machining of the cross-shaped groove and guaranteeing that the groove shape is accurately centered on the screw head without any misalignment. Because the entire fixing process strictly controls the screw's position and stability, the quality and consistency of the cross-shaped groove machining are greatly improved, reducing scrap and thus increasing overall production efficiency and yield.
[0019] Example 2 Figure 5 As shown, the difference from Embodiment 1 is that the positioning hole 3 gradually decreases in size from the outer edge of the fixing plate 1 towards the center of the fixing plate 1. This arrangement allows for the use of hexagonal bolts of different sizes for positioning, and with the clamping of the pressure plate 4, hexagonal bolts of different sizes can be fixed.
[0020] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A fixing device for milling grooves in hexagonal screws, characterized in that: The device includes a fixed plate, the outer edge of which is provided with a retaining ring, and the retaining ring is provided with a plurality of positioning holes evenly distributed on it. The positioning holes are inverted trapezoidal. The fixed plate is provided with a fixed shaft, and a pressure plate is detachably connected to the fixed shaft.
2. The fixing device for milling grooves of hexagonal screws according to claim 1, characterized in that: The fixed plate has multiple grooves, which are arranged around the fixed shaft. The pressure plate has multiple convex shafts.
3. The fixing device for milling grooves of hexagonal screws according to claim 2, characterized in that: The pressure plate is slidably connected to the fixed shaft.
4. The fixing device for milling grooves of hexagonal screws according to claim 3, characterized in that: The positioning hole gradually decreases in size from the outer edge of the fixed plate towards the center of the fixed plate.