Fixing device for grinding special-shaped casting
By designing a special-shaped casting fixing device with components such as adjusting frame, adjusting screw, and clip, the problem of insufficient adjustment rigidity of existing devices in the processing of special-shaped castings is solved, realizing rapid positioning and fine adjustment, improving processing stability and efficiency, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-14
AI Technical Summary
Existing fixtures for irregularly shaped castings suffer from problems during processing. The adjustment mechanism is too rigid and cannot adapt to asymmetrical curved surfaces, resulting in localized stress concentration on the workpiece, low operating efficiency, insufficient fixing stability, and a lack of a rapid locking and fine-tuning coordination mechanism. This makes it difficult to meet the processing needs of irregularly shaped castings with multiple sizes and curvatures, thus increasing production costs.
The fixing device, which consists of components such as adjusting frame, adjusting screw, adjusting sleeve, snap clamp, nesting cylinder, and contact plate, achieves rapid positioning and fine adjustment of irregular parts through multi-point contact and secondary extrusion self-locking mechanism, thereby enhancing processing stability and precision.
It improves the rapid positioning capability and multi-degree-of-freedom adjustment accuracy of irregularly shaped castings, reduces workpiece deformation and displacement, improves processing efficiency and grinding quality, and reduces production costs.
Smart Images
Figure CN224115935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding and fixing technology, and in particular to a fixing device for grinding irregularly shaped castings. Background Technology
[0002] Fixtures for grinding irregularly shaped castings are crucial process equipment in the machining field, widely used in precision machining of complex curved surface workpieces such as automotive engine blocks, aero-engine blades, and hydraulic valve bodies. With the increasing demands for intelligent manufacturing and flexible production, higher requirements are being placed on the rapid positioning capability, multi-degree-of-freedom adjustment accuracy, and vibration suppression performance of fixtures for irregularly shaped castings. Currently, most mainstream fixtures employ V-blocks combined with hydraulic clamping mechanisms, or combined clamping systems based on three-jaw chucks, which can already meet basic clamping stability requirements in the machining of conventionally shaped castings.
[0003] However, existing technologies suffer from drawbacks such as excessively rigid adjustment mechanisms, reliance on a single threaded rod for unidirectional clamping, inability to adapt to the multi-point contact requirements of asymmetrical curved surfaces on irregularly shaped castings, and a tendency to cause localized stress concentration or clamping deformation. Furthermore, they lack a rapid locking and fine-tuning coordination mechanism, requiring operators to repeatedly tighten and loosen adjusting bolts and use additional measuring tools to check clamping force. This significantly reduces operational efficiency in small-batch production with frequent model changes. Insufficient stability and the traditional snap-fit structure are prone to displacement drift under grinding vibrations, and the lack of a secondary compression self-locking function between the contact plate and the workpiece leads to dimensional deviations during processing. Compatibility is also limited; existing devices struggle to adapt to irregularly shaped castings of different sizes and curvatures through modular design, often requiring customized fixtures and increasing production costs. Therefore, we provide a fixing device for grinding irregularly shaped castings. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fixing device for grinding irregularly shaped castings.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixing device for grinding irregularly shaped castings, comprising: a base mechanism, the base mechanism including an adjustment frame, a fixing base plate provided on the outer surface of the adjustment frame, an adjustment screw provided in the adjustment frame, an adjustment sleeve provided on the outer surface of the adjustment screw, and an adjustment mechanism provided on the outer surface of the adjustment sleeve;
[0006] An adjustment mechanism includes an adjustment base, a snap-fit clip in the adjustment base, a nesting cylinder on the adjustment base, a contact plate in the nesting cylinder, a nesting plate on the outer surface of one end of the contact plate, a through pin on the nesting plate, and a fixing mechanism at the end of the contact plate away from the nesting plate.
[0007] A fixing mechanism includes a fixing base, a connecting frame is provided on the fixing base, a docking sleeve is provided on the connecting frame, and a fixing pin is provided at one end of the docking sleeve.
[0008] In a preferred embodiment, the inner surface of the fixed chassis is nested within the outer surface of the adjusting frame, and both ends of the adjusting screw are connected to the adjusting frame.
[0009] In a preferred embodiment, the outer surface of the adjusting sleeve is limited to the outer surface of the adjusting screw for threaded rotation adjustment, the inner surface of the adjusting base is nested within the outer surface of the adjusting sleeve, and the snap-fit clamp is limited to the adjusting base for pressing and fixing.
[0010] In a preferred embodiment, the bottom end of the nested cylinder is abutted against the adjusting base, the outer surface of the contact plate is nested in the nested cylinder, and the inner surface of the nested plate is nested at one end of the contact plate.
[0011] In a preferred embodiment, the outer surface of the through pin passes through one end of the contact plate and is nested in the nesting plate, the bottom of the fixing seat is fixedly connected to the adjusting frame, and one end of the connecting frame is welded to the fixing seat.
[0012] In a preferred embodiment, the outer surface of the mating sleeve is nested in the connecting frame, and the outer surface of the fixing pin is inserted through one end of the mating sleeve.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] This invention places the irregularly shaped part that needs to be fixed between the mating sleeve and the contact plate. Then, by rotating the adjusting sleeve, the adjusting base moves on the adjusting screw. When it moves to the appropriate position, the operator stops rotating the adjusting sleeve and presses the buckle to fix the adjusting base. After fixing, the operator can fix the contact plate and the irregularly shaped part by secondary compression, then release the buckle and fine-tune the adjusting sleeve to make it more stable for grinding, thereby improving its practicality in actual use. Attached Figure Description
[0015] Figure 1 A schematic diagram of a fixing device for grinding irregularly shaped castings provided by this utility model.
[0016] Figure 2 An exploded view of the structure of a fixing device for grinding irregularly shaped castings provided by this utility model.
[0017] Figure 3 This utility model provides a schematic diagram of the base mechanism and fixing structure of a fixing device for grinding irregularly shaped castings.
[0018] Figure 4 A schematic diagram of the adjustment mechanism of a fixing device for grinding irregularly shaped castings provided by this utility model.
[0019] Legend:
[0020] 1. Base mechanism; 11. Adjustment frame; 12. Fixed base; 13. Adjustment screw; 14. Adjustment sleeve;
[0021] 2. Adjustment mechanism; 21. Adjustment base; 22. Buckle clip; 23. Nesting cylinder; 24. Contact plate; 25. Nesting plate; 26. Inserting pin;
[0022] 3. Fixing mechanism; 31. Fixing seat; 32. Connecting frame; 33. Connecting sleeve; 34. Fixing pin. Detailed Implementation
[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.
[0024] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0025] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. 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.
[0027] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0028] Example 1
[0029] like Figures 1-4 As shown, this utility model provides a technical solution: a fixing device for grinding irregularly shaped castings, including: a base mechanism 1, the base mechanism 1 including an adjustment frame 11, a fixing base plate 12 provided on the outer surface of the adjustment frame 11, an adjustment screw 13 provided in the adjustment frame 11, an adjustment sleeve 14 provided on the outer surface of the adjustment screw 13, and an adjustment mechanism 2 provided on the outer surface of the adjustment sleeve 14.
[0030] Adjustment mechanism 2 includes adjustment base 21, a buckle clip 22 is provided in adjustment base 21, a nesting cylinder 23 is provided on adjustment base 21, a contact plate 24 is provided in nesting cylinder 23, a nesting plate 25 is provided on the outer surface of one end of contact plate 24, a through pin 26 is provided on nesting plate 25, and a fixing mechanism 3 is provided at the end of contact plate 24 away from nesting plate 25.
[0031] The fixing mechanism 3 includes a fixing base 31, a connecting frame 32 is provided on the fixing base 31, a docking sleeve 33 is provided on the connecting frame 32, and a fixing pin 34 is provided at one end of the docking sleeve 33.
[0032] The inner surface of the fixed base 12 is nested in the outer surface of the adjusting frame 11. Both ends of the adjusting screw 13 are connected to the adjusting frame 11. The outer surface of the adjusting sleeve 14 is limited to the outer surface of the adjusting screw 13 for threaded rotation adjustment. The inner surface of the adjusting base 21 is nested in the outer surface of the adjusting sleeve 14. The snap clip 22 is limited in the adjusting base 21 for pressing and fixing. The bottom end of the nesting cylinder 23 is connected to the adjusting base 21. The outer surface of the contact plate 24 is nested in the nesting cylinder 23. The inner surface of the nesting plate 25 is nested in one end of the contact plate 24. The outer surface of the through pin 26 passes through one end of the contact plate 24 and is nested in the nesting plate 25. The bottom of the fixed seat 31 is fixedly connected to the adjusting frame 11. One end of the connecting frame 32 is welded to the fixed seat 31. The outer surface of the docking sleeve 33 is nested in the connecting frame 32. The outer surface of the fixing pin 34 passes through one end of the docking sleeve 33.
[0033] In this embodiment, when using this fixing device to fix and grind irregularly shaped parts, the worker can place the irregularly shaped part to be fixed between the docking sleeve 33 and the contact plate 24, and then rotate the adjusting sleeve 14 to move the adjusting base 21 on the adjusting screw 13. When it moves to the appropriate position, the worker stops rotating the adjusting sleeve 14 and presses the buckle 22 to fix the adjusting base 21. After fixing, the worker can press the contact plate 24 and the irregularly shaped part to fix it a second time, and then release the buckle 22 and fine-tune the adjusting sleeve 14 to make it more stable for grinding, thereby improving its practicality in actual use.
[0034] Working principle:
[0035] like Figures 1-4 As shown, when using this fixing device to fix and grind irregularly shaped parts, the operator first places the irregularly shaped part to be fixed between the mating sleeve 33 and the contact plate 24, ensuring that the irregularly shaped part is securely placed between them for subsequent operations. Next, the operator rotates the adjusting sleeve 14, causing it to move the adjusting base 21 along the desired direction on the adjusting screw 13. When the adjusting base 21 moves to the appropriate position, the operator stops rotating the adjusting sleeve 14 and presses the buckle 22 to fix the position of the adjusting base 21, ensuring its stability during grinding and preventing the irregularly shaped part from shifting or moving.
[0036] After fixing, the workers can use the contact plate 24 to perform a secondary compression fixation on the irregularly shaped part to further ensure its stability during the grinding process. In this way, the irregularly shaped part will be firmly fixed in the device, providing stable support and ensuring the accuracy and safety of the grinding operation.
[0037] During the polishing process, if workers need to make minor adjustments to the fixing of irregularly shaped parts, they can loosen the clips 22 and further adjust the position of the adjusting base 21 using the fine-tuning sleeve 14 to more stably fix the irregularly shaped parts. Through fine-tuning, workers can ensure that the irregularly shaped parts do not loosen or shift during the polishing process, thereby improving polishing quality and work efficiency.
[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0039] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A fixing device for grinding irregularly shaped castings, characterized in that, include: The base mechanism (1) includes an adjustment frame (11), a fixed base plate (12) is provided on the outer surface of the adjustment frame (11), an adjustment screw (13) is provided in the adjustment frame (11), an adjustment sleeve (14) is provided on the outer surface of the adjustment screw (13), and an adjustment mechanism (2) is provided on the outer surface of the adjustment sleeve (14). The adjustment mechanism (2) includes an adjustment base (21), a buckle clip (22) is provided in the adjustment base (21), a nesting cylinder (23) is provided on the adjustment base (21), a contact plate (24) is provided in the nesting cylinder (23), a nesting plate (25) is provided on the outer surface of one end of the contact plate (24), a through pin (26) is provided on the nesting plate (25), and a fixing mechanism (3) is provided at the end of the contact plate (24) away from the nesting plate (25). The fixing mechanism (3) includes a fixing seat (31), a connecting frame (32) is provided on the fixing seat (31), a docking sleeve (33) is provided on the connecting frame (32), and a fixing pin (34) is provided at one end of the docking sleeve (33).
2. The fixing device for grinding irregularly shaped castings according to claim 1, characterized in that: The inner surface of the fixed chassis (12) is nested on the outer surface of the adjustment frame (11), and both ends of the adjustment screw (13) are connected to the adjustment frame (11).
3. The fixing device for grinding irregularly shaped castings according to claim 2, characterized in that: The outer surface of the adjusting sleeve (14) is limited to the outer surface of the adjusting screw (13) for threaded rotation adjustment. The inner surface of the adjusting base (21) is nested within the outer surface of the adjusting sleeve (14). The buckle (22) is limited to the adjusting base (21) for pressing and fixing.
4. The fixing device for grinding irregularly shaped castings according to claim 1, characterized in that: The bottom end of the nesting cylinder (23) is connected to the adjusting base (21), the outer surface of the contact plate (24) is nested in the nesting cylinder (23), and the inner surface of the nesting plate (25) is nested at one end of the contact plate (24).
5. A fixing device for grinding irregularly shaped castings according to claim 1, characterized in that: The outer surface of the through pin (26) passes through one end of the contact plate (24) and is nested in the nesting plate (25). The bottom of the fixed seat (31) is fixedly connected to the adjustment frame (11), and one end of the connecting frame (32) is welded to the fixed seat (31).
6. The fixing device for grinding irregularly shaped castings according to claim 1, characterized in that: The outer surface of the docking sleeve (33) is nested in the connecting frame (32), and the outer surface of the fixing pin (34) is inserted through one end of the docking sleeve (33).