A fixed device for grinding the end face of a screw of an oil press
Patent Information
- Application Number
- CN202521946918.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-10
AI Technical Summary
[0003]然而，现有涨套夹具存在明显缺陷
[0023]1、本实用新型提出的一种榨油机榨螺端面磨削用固定装置，防松动组件通过定位卡块与内六角螺栓定位卡槽的卡合结构，能有效抵消磨削过程中的震动影响，避免螺栓松动导致涨套涨紧力衰减，确保榨螺装夹刚性稳定，从而保障磨削端面的加工效果，同时，无需额外工具即可完成防松锁止与解锁，方便操作。
Smart Images
Figure CN224659117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw processing technology, and in particular to a fixing device for grinding the end face of an oil press screw. Background Technology
[0002] In the manufacturing of oil presses, the screw press is a core component, and the precision of its end face machining directly affects the pressing efficiency and oil quality. Therefore, it needs to be precision-machined using grinding equipment. Currently, the industry mostly uses expansion sleeve clamps to fix the screw press. These devices achieve a tight grip on the workpiece through the cooperation of the expansion sleeve and the expansion core, which is key to ensuring the stability of the grinding process.
[0003] However, existing expansion sleeve clamps have significant drawbacks. On the one hand, the bolts used to lock the expansion sleeve and the expansion core are easily loosened by grinding vibration, resulting in a decrease in the tensioning force of the expansion sleeve. This not only reduces the clamping rigidity of the screw press and affects the grinding accuracy, but may also cause safety risks due to loose bolts. On the other hand, when the threaded structure on the expansion core wears down due to long-term use, the entire expansion core needs to be replaced, which consumes a lot of disassembly and assembly time and seriously restricts production efficiency.
[0004] Therefore, those skilled in the art have provided a fixing device for grinding the end face of an oil press screw to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a fixing device for grinding the end face of the screw of an oil press. By providing an anti-loosening component, the rotation of the internal hexagon bolt can be effectively restricted, thus preventing loosening due to vibration and other factors during the grinding process of the screw end face. This ensures the stability of the connection between the expansion sleeve and the expansion core. By providing an inner core replacement component, it is not necessary to remove the entire expansion core from the device for replacement; only the replaceable inner core needs to be replaced, reducing equipment maintenance time.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A fixing device for grinding the end face of an oil press screw includes an expansion sleeve and an expansion core. The expansion sleeve is movably sleeved on the expansion core. A movable groove is formed at the center of the upper end of the expansion sleeve. An internal hexagon bolt is movably arranged inside the movable groove. An anti-loosening component is provided between the internal hexagon bolt and the expansion sleeve. An installation groove is formed at the center of the upper end of the expansion core. An inner core replacement component is provided inside the installation groove.
[0008] The anti-loosening component includes two positioning blocks. The inner walls of the movable groove are provided with telescopic grooves on both sides. The two positioning blocks are slidably set in the corresponding telescopic grooves. Movable springs are fixedly connected between the two positioning blocks and the inner walls of the corresponding telescopic grooves at opposite ends. The outer walls of the internal hexagonal bolts are provided with positioning slots on both sides.
[0009] Through the above technical solution, by incorporating an anti-loosening component, when the hexagon socket bolt is tightened, the positioning slot on the hexagon socket bolt corresponds to the position of the positioning block in the telescopic groove on the inner wall of the movable groove. When the movable block is loosened, the movable spring returns to its original deformation, pushing the positioning block out and locking into the positioning slot, thereby restricting the rotation of the hexagon socket bolt and playing an anti-loosening role. This effectively prevents the hexagon socket bolt from loosening due to vibration and other factors during the grinding process of the screw end face, ensuring the stability of the connection between the expansion sleeve and the expansion core, thereby ensuring the stability of the screw on the fixed device, improving the reliability of the grinding process, reducing equipment failures and processing errors caused by bolt loosening, and extending the service life of the equipment.
[0010] Furthermore, the inner core replacement assembly includes a replaceable inner core, which is fitted into the mounting groove. A threaded groove is provided at the center of the upper end of the replaceable inner core. The hexagonal socket head cap screw is threaded into the threaded groove. Reset grooves are provided on both sides of the outer wall of the replaceable inner core. Fixing blocks are slidably disposed inside the two reset grooves. Fixing slots are provided on both sides of the inner wall of the mounting groove. Two first reset springs are fixedly connected between the two fixing blocks and the inner wall of the corresponding reset groove on the opposite side.
[0011] With the above technical solution, by providing an inner core replacement component, when the inner thread groove of the expansion core is severely worn due to frequent use, it is not necessary to remove the entire expansion core from the device for replacement. Only the replaceable inner core needs to be replaced. Pressing the extrusion block causes it to overcome the elastic force of the second return spring and move downward to extrude the fixing block, causing the fixing block to retract back into the return groove. At this time, the replaceable inner core can be removed from the mounting groove, reducing the time and cost of equipment maintenance.
[0012] Furthermore, the upper inner walls of both telescopic grooves are provided with sliding grooves, and the upper ends of both positioning blocks are fixedly connected to moving blocks through connecting blocks. Both connecting blocks are slidably set in the corresponding sliding grooves.
[0013] Through the above technical solution, by pushing the moving block, the positioning card block can be moved along with it via the connecting block, thereby allowing it to retract into the telescopic groove and disengage from the positioning card slot.
[0014] Furthermore, each of the two reset slots has a pressing groove on its upper inner wall, and a squeezing block is slidably disposed inside each of the two pressing grooves. Each of the two fixing blocks has a squeezing groove on its upper end, and the lower ends of the two squeezing blocks are movably disposed in the corresponding squeezing grooves. A second reset spring is fixedly connected between the inner walls of the two squeezing blocks and the corresponding pressing grooves at opposite ends.
[0015] Through the above technical solution, the pressing and squeezing block moves downward in the pressing groove against the elastic force of the second return spring. The lower end of the pressing block enters the squeezing groove and squeezes the fixing block, so that the fixing block retracts back into the positioning groove against the elastic force of the first return spring, releasing the fixed state of the replaceable inner core. This easily realizes the disassembly of the replaceable inner core, improves the convenience of equipment maintenance, and reduces the difficulty and complexity of maintenance operations.
[0016] Furthermore, both positioning blocks are engaged within their respective positioning slots;
[0017] Through the above technical solution, the positioning block pops out under the action of the movable spring and is locked into the positioning slot on the outer wall of the internal hexagon bolt. The locking structure between the two restricts the rotation of the internal hexagon bolt and prevents it from loosening.
[0018] Furthermore, both of the aforementioned fixing blocks are engaged within their respective fixing slots;
[0019] With the above technical solution, when the replaceable inner core is inserted into the mounting slot, the fixing block is squeezed and retracted. After reaching the position of the fixing slot, the first reset spring pushes the fixing block into the fixing slot, thereby fixing the replaceable inner core in the mounting slot.
[0020] Furthermore, a connecting end is fixedly connected to the lower end of the expansion core;
[0021] The above technical solution provides a connection interface for the expansion core to external equipment, connecting the expansion core to other components of the fixing device for grinding the end face of the oil press screw (such as the fixing seat of the grinding equipment), so that the expansion core can be stably installed on the grinding equipment, ensuring a reliable connection between the entire fixing device and the grinding equipment, thereby ensuring that the screw can be stably fixed and processed during the grinding process.
[0022] This utility model has the following beneficial effects:
[0023] 1. The present invention proposes a fixing device for grinding the end face of an oil press screw. The anti-loosening component, through the engagement structure of the positioning block and the positioning groove of the internal hexagonal bolt, can effectively offset the vibration during the grinding process, avoid the bolt loosening and the resulting reduction of the tensioning force of the expansion sleeve, ensure the rigidity and stability of the screw clamping, thereby guaranteeing the processing effect of the grinding end face. At the same time, the anti-loosening locking and unlocking can be completed without additional tools, which is convenient for operation.
[0024] 2. The present invention proposes a fixing device for grinding the end face of the screw of an oil press. By providing an inner core replacement component, when the inner thread groove of the expansion core is severely worn due to frequent use, it is not necessary to remove the entire expansion core from the device for replacement. Only the replaceable inner core needs to be replaced. Pressing the extrusion block causes the extrusion block to overcome the elastic force of the second return spring and move downward to extrude the fixing block, causing the fixing block to retract back into the return groove. At this time, the replaceable inner core can be removed from the installation groove, reducing the equipment maintenance time. Attached Figure Description
[0025] Figure 1 This is an isometric schematic diagram of a fixing device for grinding the end face of an oil press screw according to the present invention;
[0026] Figure 2 This is a partial orthosectional view of a fixing device for grinding the end face of an oil press screw according to the present invention;
[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A;
[0028] Figure 4 This is a front sectional view of the expansion core of a fixing device for grinding the end face of an oil press screw according to the present invention;
[0029] Figure 5 for Figure 4 Enlarged structural diagram at point B;
[0030] Figure 6 This is a top view schematic diagram of the expansion core of a fixing device for grinding the end face of an oil press screw, as proposed in this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Expansion sleeve; 2. Expansion core; 3. Movable groove; 4. Socket headstock bolt; 5. Anti-loosening component; 6. Mounting groove; 7. Replaceable inner core; 8. Inner core replacement component; 9. Threaded groove; 10. Telescopic groove; 11. Positioning block; 12. Positioning slot; 13. Movable spring; 14. Sliding groove; 15. Connecting block; 16. Moving block; 17. Reset groove; 18. Fixing block; 19. Fixing slot; 20. First reset spring; 21. Pressing groove; 22. Extrusion block; 23. Extrusion groove; 24. Second reset spring; 25. Connecting end. Detailed Implementation
[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0034] Reference Figure 1-3 This utility model provides a specific embodiment: a fixing device for grinding the end face of an oil press screw, including an expansion sleeve 1 and an expansion core 2. The expansion sleeve 1 is movably fitted on the expansion core 2. A movable groove 3 is provided at the center of the upper end of the expansion sleeve 1. An internal hexagon bolt 4 is movably installed inside the movable groove 3. An anti-loosening component 5 is provided between the internal hexagon bolt 4 and the expansion sleeve 1. An installation groove 6 is provided at the center of the upper end of the expansion core 2. An inner core replacement component 8 is provided inside the installation groove 6. A connecting end 25 is fixedly connected to the lower end of the expansion core 2, providing a connection interface for the expansion core 2 to external equipment. The expansion core 2 is connected to other components of the fixing device for grinding the end face of an oil press screw (such as the fixing seat of the grinding equipment), so that the expansion core 2 can be stably installed on the grinding equipment, ensuring a reliable connection between the entire fixing device and the grinding equipment, thereby ensuring that the screw can be stably fixed and processed during the grinding process.
[0035] The anti-loosening component 5 includes two positioning blocks 11. Telescopic grooves 10 are provided on both sides of the inner wall of the movable groove 3. The two positioning blocks 11 slide within their respective telescopic grooves 10. Movable springs 13 are fixedly connected between the two positioning blocks 11 and the inner walls of their respective telescopic grooves 10 at opposite ends. Positioning slots 12 are provided on both sides of the outer wall of the hexagonal socket head cap screw 4. The two positioning blocks 11 engage within their respective positioning slots 12. Under the action of the movable springs 13, the positioning blocks 11 pop out and engage within the positioning slots 12 on the outer wall of the hexagonal socket head cap screw 4. This engagement structure restricts the rotation of the hexagonal socket head cap screw 4, preventing it from loosening. Sliding grooves 14 are provided on the upper inner walls of both telescopic grooves 10. Moving blocks 16 are fixedly connected to the upper ends of both positioning blocks 11 via connecting blocks 15. The two connecting blocks 15 slide within their respective sliding grooves 14. By pushing… The movable block 16, via the connecting block 15, allows the positioning block 11 to move, retracting it into the telescopic groove 10 and disengaging it from the positioning slot 12. With the anti-loosening component 5, when the hexagonal socket bolt 4 is tightened, the positioning slot 12 on the hexagonal socket bolt 4 aligns with the position of the positioning block 11 in the telescopic groove 10 on the inner wall of the movable groove 3. When the movable block 16 is released, the movable spring 13 returns to its original shape, pushing the positioning block 11 out and into the positioning slot 12, thus restricting the rotation of the hexagonal socket bolt 4 and preventing loosening. This effectively prevents the hexagonal socket bolt 4 from loosening due to vibration or other factors during the grinding process of the screw end face, ensuring the stability of the connection between the expansion sleeve 1 and the expansion core 2, thereby ensuring the stability of the screw on the fixing device, improving the accuracy and reliability of the grinding process, reducing equipment failures and processing errors caused by loose bolts, and extending the service life of the equipment.
[0036] Reference Figure 4-6The inner core replacement assembly 8 includes a replaceable inner core 7, which is fitted into the mounting groove 6. A threaded groove 9 is formed at the center of the upper end of the replaceable inner core 7, and a hexagonal socket head cap screw 4 engages with the threaded groove 9. Reset grooves 17 are formed on both sides of the outer wall of the replaceable inner core 7, and fixing blocks 18 are slidably disposed inside each of the two reset grooves 17. Fixing slots 19 are formed on both sides of the inner wall of the mounting groove 6, and the two fixing blocks 18 are engaged within their respective fixing slots 19. When the replaceable inner core 7 is inserted into the mounting groove 6, the fixing blocks 18 are... Upon compression and retraction, after reaching the fixed slot 19 position, the first return spring 20 pushes the fixed block 18 into the fixed slot 19, thus fixing the replaceable inner core 7 in the mounting slot 6. Two first return springs 20 are fixedly connected between the two fixed blocks 18 and the corresponding inner walls of the reset slots 17 on opposite sides. Each of the upper inner walls of the two reset slots 17 has a pressing groove 21, and each pressing groove 21 has a sliding pressing block 22 inside. Each of the two fixed blocks 18 has a pressing groove 23 at its upper end, and the lower ends of the two pressing blocks 22... Both are movable within the corresponding pressing groove 23. A second return spring 24 is fixedly connected between the inner walls of the two pressing blocks 22 and the corresponding pressing groove 21 at opposite ends. When the pressing block 22 is pressed, it moves downward within the pressing groove 21 against the elastic force of the second return spring 24. The lower end of the pressing block 22 enters the pressing groove 23 and presses the fixing block 18, causing the fixing block 18 to retract into the return groove 17 against the elastic force of the first return spring 20, releasing the fixed state of the replaceable inner core 7. This easily allows for the disassembly of the replaceable inner core 7, improving the design efficiency. The ease of maintenance reduces the difficulty and complexity of maintenance operations. With the inner core replacement component 8, when the inner thread groove 9 of the expansion core 2 is severely worn due to frequent use, it is not necessary to remove the entire expansion core 2 from the device for replacement. Only the replaceable inner core 7 needs to be replaced. Pressing the squeezing block 22 causes the squeezing block 22 to overcome the elastic force of the second return spring 24 and move downward to squeeze the fixing block 18, causing the fixing block 18 to retract into the return groove 17. At this time, the replaceable inner core 7 can be removed from the mounting groove 6, reducing the time and cost of equipment maintenance.
[0037] Working principle: First, the expansion sleeve 1 is movably fitted onto the expansion core 2. The internal hex bolt 4 is tightened so that it engages with the threaded groove 9 of the replaceable inner core 7 at the upper end of the expansion core 2. As the bolt is screwed in, the expansion sleeve 1 expands radially outward along the conical surface of the expansion core 2, achieving a tight clamping and fixing of the screw, providing stable clamping for grinding. After tightening the bolt, the positioning groove 12 on the outer wall of the bolt corresponds to the position of the positioning block 11 in the movable groove 3. Loosening the moving block 16 causes the movable spring 13 to push the positioning block 11 out and into the groove, restricting bolt rotation and preventing loosening due to grinding vibration, thus maintaining the tension of the expansion sleeve 1. The internal hex bolt 4 is then loosened. When bolt 4 is in place, pull the moving block 16 to retract the positioning block 11 into the shrinkage groove. The bolt can then rotate freely and exit. After the bolt is loosened, the expansion sleeve 1 loses axial pressure and retracts due to its own elasticity, releasing the gripping of the screw and facilitating unloading and clamping of new workpieces. If the inner thread groove 9 of the expansion core 2 is worn due to frequent disassembly and assembly, press the squeezing block 22 to retract the fixing block 18 back into the repositioning groove 17, and the old replaceable inner core 7 can be removed. When installing the new inner core, first squeeze the fixing block 18 to retract it. After aligning it with the fixing groove 19, the first reset spring 20 pushes the block to engage, completing the quick replacement of the inner core without the need to completely disassemble and replace the expansion core 2, thus reducing maintenance costs.
[0038] The following points should be noted in this article:
[0039] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.
[0040] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fixing device for grinding the end face of an oil press screw, comprising an expansion sleeve (1) and an expansion core (2), characterized in that: The expansion sleeve (1) is movably sleeved on the expansion core (2). A movable groove (3) is provided at the center of the upper end of the expansion sleeve (1). An internal hex bolt (4) is movably arranged inside the movable groove (3). An anti-loosening component (5) is provided between the internal hex bolt (4) and the expansion sleeve (1). An installation groove (6) is provided at the center of the upper end of the expansion core (2). An inner core replacement component (8) is provided inside the installation groove (6). The anti-loosening component (5) includes two positioning blocks (11). The inner walls of the movable groove (3) are provided with telescopic grooves (10) on both sides. The two positioning blocks (11) are slidably arranged in the corresponding telescopic grooves (10). Movable springs (13) are fixedly connected between the inner walls of the two positioning blocks (11) and the corresponding telescopic grooves (10) at opposite ends. The outer walls of the internal hexagonal bolt (4) are provided with positioning slots (12) on both sides.
2. The fixing device for grinding the end face of the screw of an oil press according to claim 1, characterized in that: The inner core replacement assembly (8) includes a replaceable inner core (7), which is fitted into the mounting groove (6). A threaded groove (9) is provided at the center of the upper end of the replaceable inner core (7). The internal hex bolt (4) is threaded into the threaded groove (9). Reset grooves (17) are provided on both sides of the outer wall of the replaceable inner core (7). Fixing blocks (18) are slidably provided inside the two reset grooves (17). Fixing slots (19) are provided on both sides of the inner wall of the mounting groove (6). Two first reset springs (20) are fixedly connected between the two fixing blocks (18) and the inner wall of the corresponding reset groove (17) on the opposite side.
3. The fixing device for grinding the end face of the screw of an oil press according to claim 1, characterized in that: The upper inner walls of the two telescopic grooves (10) are provided with sliding grooves (14), and the upper ends of the two positioning blocks (11) are fixedly connected to moving blocks (16) through connecting blocks (15). The two connecting blocks (15) are slidably set in the corresponding sliding grooves (14).
4. The fixing device for grinding the end face of the screw of an oil press according to claim 2, characterized in that: The upper inner walls of the two reset slots (17) are provided with pressing slots (21), and the inside of the two pressing slots (21) are slidably provided with squeezing blocks (22). The upper ends of the two fixing blocks (18) are provided with squeezing slots (23), and the lower ends of the two squeezing blocks (22) are movably provided in the corresponding squeezing slots (23). The inner walls of the two squeezing blocks (22) and the corresponding pressing slots (21) are fixedly connected with a second reset spring (24).
5. A fixing device for grinding the end face of an oil press screw according to claim 1, characterized in that: Both positioning blocks (11) are engaged in the corresponding positioning slots (12).
6. A fixing device for grinding the end face of an oil press screw according to claim 2, characterized in that: Both of the aforementioned fixing blocks (18) are engaged within their respective fixing slots (19).
7. A fixing device for grinding the end face of an oil press screw according to claim 1, characterized in that: The lower end of the expansion core (2) is fixedly connected to a connecting end (25).