A concentric clamping mechanism using different oil pressures to control two groups of oil cylinders

Abstract

The application relates to a concentric clamping mechanism for controlling two groups of oil cylinders by different oil pressures, which comprises a first limiting piece and a second limiting piece for workpiece clamping fixation, the first limiting piece is arranged on the opposite side of the second limiting piece, the oil pressure of the first limiting piece is greater than that of the second limiting piece, and the stroke of the first limiting piece is just in contact with the workpiece. The oil pressure of the first limiting piece is greater than that of the second limiting piece, the first limiting piece reaches the workpiece first, the stroke of the first limiting piece is just in contact with the workpiece, the first limiting piece is fixed, then the second limiting piece reaches the workpiece surface, the workpiece is clamped, under the action of the first limiting piece, the first limiting piece plays a positioning and fixing role on one side of the workpiece, the second limiting piece pushes the workpiece to move with small deviation, the pushing force of the workpiece on the main shaft of the balance testing mechanism is reduced, and the damage to the main shaft of the balance testing mechanism is reduced.

Description

Technical Field

[0001] This application relates to the technical field of balance testing of circular workpieces, and in particular to a concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders. Background Technology

[0002] Currently, after conducting a balance test on a circular workpiece, it is necessary to clamp and fix the workpiece, and then use a milling machine to mill the workpiece to remove weight and achieve dynamic balance. In the existing technology, two identical cylinders are used to clamp the circular workpiece.

[0003] Regarding the aforementioned technologies, since the two identical cylinders clamp the circular workpiece, there is a discrepancy in the time it takes for the two identical cylinders to reach the surface of the circular workpiece. This causes the cylinders to shift to the side where they reach the circular workpiece backward, which pushes the main shaft on the balancing test mechanism and affects the operation of the balancing test mechanism. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders.

[0005] This application provides a concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders, employing the following technical solution:

[0006] A concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders includes a first limiting member and a second limiting member for clamping the workpiece. The first limiting member is located on the opposite side of the second limiting member. The hydraulic pressure of the first limiting member is greater than that of the second limiting member. The first limiting member contacts the workpiece exactly when its stroke is completed.

[0007] By adopting the above technical solution, the oil pressure of the first limiting member is greater than that of the second limiting member, so that the first limiting member reaches the workpiece first and contacts the workpiece just as it completes its stroke, thus fixing the first limiting member. Then, the second limiting member arrives at the workpiece surface afterward to clamp the workpiece. Under the action of the first limiting member, the first limiting member plays a role in positioning and fixing one side of the workpiece, which makes the deviation of the second limiting member pushing the workpiece to move smaller, reducing the thrust of the workpiece on the spindle of the balancing test mechanism, thereby reducing the damage to the spindle of the balancing test mechanism.

[0008] Preferably, the bottom of both the first limiting member and the second limiting member is provided with a worktable for connecting to the machine frame, the first limiting member and the second limiting member are slidably connected to the worktable, and a balance testing mechanism is provided on the worktable; the workpiece is placed on the balance testing mechanism.

[0009] By adopting the above technical solution, the first and second limiting components are installed on the balance testing equipment via the worktable, which enables contact limiting of the workpiece after it has passed the balance testing mechanism test, facilitating milling of the workpiece and balancing the workpiece.

[0010] Preferably, the first limiting member includes a first slide block, which is slidably connected to the worktable, and a first telescopic cylinder is installed on the top of the first slide block.

[0011] By adopting the above technical solution, the first limiting member can be slidable through the first telescopic cylinder and the first sliding block, and the oil pressure of the first limiting member can be adjusted by setting the oil pressure of the first telescopic cylinder.

[0012] Preferably, the first telescopic cylinder is provided with a first proximity switch for controlling the first telescopic cylinder.

[0013] By adopting the above technical solution, by setting a first proximity switch, the first proximity switch controls the first limiting member, so that when the first limiting member contacts the workpiece, the extension and retraction state of the first hydraulic cylinder can be detected in real time, and the first limiting member can be controlled to stop, ensuring that the first limiting member just contacts the workpiece.

[0014] Preferably, the first slide includes a first protrusion for support, the top of the first protrusion is connected to a first telescopic cylinder, and the bottom of the first protrusion is connected to two first T-shaped sliders; the top of the worktable is provided with a first groove for cooperating with the first T-shaped sliders, and the first protrusion and the first T-shaped slider are threaded with first fastening bolts for fixing.

[0015] By adopting the above technical solution, the position of the first limiting member is adjusted by sliding the first protrusion in the first groove on the worktable, so that the first limiting member just contacts the workpiece after the stroke is completed, and the first limiting member is fastened by the first fastening bolt, so that the position of the first limiting member remains unchanged.

[0016] Preferably, the second limiting member includes a second slide block; the second slide block is slidably connected to the worktable, and a second telescopic hydraulic cylinder for clamping the workpiece is connected to the top of the second slide block.

[0017] By adopting the above technical solution, the second limiting member can be slidable by the second telescopic cylinder and the second slide block. At the same time, the oil pressure of the second limiting member can be adjusted by setting the oil pressure of the second telescopic cylinder so that the oil pressure of the second limiting member is less than the oil pressure of the first limiting member.

[0018] Preferably, the second telescopic cylinder is provided with a second proximity switch for controlling the second telescopic cylinder.

[0019] By adopting the above technical solution and setting a second proximity switch to control the second limit component, the extension and retraction state of the second hydraulic cylinder can be detected in real time, and the second limit component can be stopped to ensure that the workpiece is clamped.

[0020] Preferably, the second slide includes a second protrusion for support, the top of the second protrusion is connected to a second telescopic cylinder, and the bottom of the second protrusion is connected to two second T-shaped sliders; the top of the worktable is provided with a second slide groove for cooperating with the second T-shaped sliders, and the second protrusion and the second T-shaped slider are threadedly connected with second fastening bolts for fixing.

[0021] By adopting the above technical solution, the position of the second limiting member can be adjusted by sliding the second protrusion in the second groove on the worktable. The position of the second limiting member can be adjusted according to the needs of the workpiece. The first limiting member is fastened by the first fastening bolt, so that the position of the second limiting member is positioned.

[0022] Preferably, the contact surfaces between the first and second limiting members and the workpiece are arc surfaces, and the arc surfaces on the first and second limiting members are adapted to the workpiece.

[0023] By adopting the above technical solution, the surfaces of the first and second limiting members that contact the workpiece are set to be arc surfaces, which can better limit and clamp the circular workpiece and prevent the workpiece from sliding.

[0024] Preferably, the bottom of the worktable is connected to a frame; a milling machine mechanism is provided on the frame, the milling machine mechanism is used in conjunction with the workpiece, and the balance testing mechanism is installed on the frame.

[0025] By adopting the above technical solution, after the workpiece is balanced by the balancing testing mechanism, the workpiece is limited by the first and second limiting components, the milling machine structure is adjusted, and the workpiece is milled to remove weight, so that the workpiece achieves dynamic balance.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By making the hydraulic pressure of the first limiting member greater than that of the second limiting member, the first limiting member reaches the workpiece first, and its stroke is completed just in time to contact the workpiece and fix it. Then the second limiting member arrives at the workpiece surface to clamp the workpiece. Under the action of the first limiting member, the first limiting member positions and fixes one side of the workpiece. The second limiting member works in conjunction with the first limiting member to push the workpiece, resulting in a smaller deviation in workpiece movement. This reduces the thrust of the workpiece on the spindle of the balancing test mechanism, thereby reducing damage to the spindle of the balancing test mechanism.

[0028] 2. Setting the first and second limiting components with arc surfaces in contact with each other enables better limiting and clamping of circular workpieces and prevents workpiece slippage;

[0029] 3. By setting a first proximity switch and a second proximity switch, the first telescopic cylinder and the second telescopic cylinder can be controlled to ensure the extension and retraction of the first telescopic cylinder and the second telescopic cylinder, thereby enabling the workpiece to be clamped. Attached Figure Description

[0030] Figure 1 It is a three-dimensional diagram of the cooperation structure between the concentric clamping mechanism and the balance testing mechanism;

[0031] Figure 2 This is a three-dimensional structural diagram of the concentric clamping mechanism;

[0032] Figure 3 yes Figure 2 Rear-view stereoscopic view;

[0033] Figure 4 This is a cross-sectional view of the concentric clamping mechanism;

[0034] Figure 5 This is a three-dimensional structural view of the second limiting component;

[0035] Figure 6 This is a three-dimensional view of the mating structure of the first and second limiting components.

[0036] Reference numerals: 100, frame; 110, worktable; 200, first limiting member; 210, first slide block; 211, first protrusion; 212, first T-shaped slider; 213, first slide groove; 214, first fastening bolt; 220, first telescopic cylinder; 230, first proximity switch; 300, second limiting member; 310, second slide block; 311, second protrusion; 312, second T-shaped slider; 313, second slide groove; 314, second fastening bolt; 320, second telescopic cylinder; 330, second proximity switch; 400, balance testing mechanism; 500, workpiece; 600, milling machine mechanism. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail.

[0038] This application discloses a concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders.

[0039] Reference Figure 1A concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders includes a first limiting member 200 and a second limiting member 300. The first limiting member 200 is located on the opposite side of the second limiting member 300. A worktable 110 is slidably connected to the bottom of the first limiting member 200 and the second limiting member 300. A balance testing mechanism 400 for balance measurement is connected to the worktable 110. The workpiece 500 is placed on the balance testing mechanism 400. After the balance test is performed by the balance testing mechanism 400, the concentric clamping mechanism is activated, so that the first limiting member 200 and the second limiting member 300 clamp the workpiece 500.

[0040] The oil pressure on the first limiting member 200 is greater than the oil pressure on the second limiting member 300, and the first limiting member 200 just comes into contact with the workpiece 500 after its stroke is completed. This causes the first limiting member 200 to reach the workpiece 500 first and make contact with it, limiting one side of the workpiece 500. Then the second limiting member 300 arrives and pushes the workpiece 500. Since the oil pressure of the first limiting member 200 is greater than the oil pressure of the second limiting member 300, it is difficult for the second limiting member 300 to push the first limiting member 200, thereby clamping the workpiece 500, reducing the workpiece 500's deviation, and thus protecting the spindle of the balance testing mechanism 400.

[0041] Meanwhile, the worktable 110 is set on the frame 100, and the frame 100 is equipped with a milling machine mechanism 600, which mills the workpiece 500 to remove weight, ensuring that the workpiece 500 reaches dynamic balance and that the workpiece 500 is qualified for production.

[0042] refer to Figure 2 The first limiting member 200 includes a first slide block 210 and a first telescopic cylinder 220. The first telescopic cylinder 220 is mounted on the first slide block 210, which is mounted on the worktable 110. The distance of the first slide block 210 is adjusted so that the first slide block 210 is adjusted until the first telescopic cylinder 220 has completed its stroke, thereby positioning the first slide block 210 so that the first telescopic cylinder 220 just contacts the surface of the workpiece 500, thus limiting one side of the workpiece 500.

[0043] The second limiting component 300 includes a second slide block 310 and a second telescopic cylinder 320. The second telescopic cylinder 320 is mounted on the second slide block 310, which is mounted on the worktable 110. The second slide block 310 is located on the opposite side of the first slide block 210. The workpiece 500 is located between the first slide block 210 and the second slide block 310. The position of the second slide block 310 is adjusted to ensure that the workpiece 500 is within the stroke range of the second telescopic cylinder 320.

[0044] refer to Figure 3 and Figure 4The first telescopic cylinder 220 is connected to a first proximity switch 230. The first proximity switch 230 controls the extension and retraction of the first telescopic cylinder 220, ensuring that the first telescopic cylinder 220 contacts the surface of the workpiece 500 when its stroke is completed. This prevents the first telescopic cylinder 220 from excessively extending or retracting and pushing the workpiece 500, thus preventing the workpiece 500 from shifting to the side with lower oil pressure and pushing the spindle on the balance testing mechanism 400, thereby preventing damage to the spindle on the balance testing mechanism 400.

[0045] The second telescopic cylinder 320 is connected to a second proximity switch 330. The second proximity switch 330 controls the extension and retraction of the second telescopic cylinder 320 so that after the second telescopic cylinder 320 clamps the workpiece 500, the second telescopic cylinder 320 stops working, ensuring that the workpiece 500 is clamped.

[0046] refer to Figure 5 and Figure 6 The second slide block 310 includes a second protrusion 311 and a second T-shaped slider 312. The second protrusion 311 is disposed on the worktable 110, and the top of the second protrusion 311 is connected to the bottom of the second telescopic cylinder 320. The top of the second T-shaped slider 312 is connected to the bottom of the second protrusion 311. The second T-shaped slider 312 is located inside the worktable 110. The top of the worktable 110 is provided with a second slide groove 313 that cooperates with the second T-shaped slider 312. The second T-shaped slider 312 and the second protrusion 311 are threadedly connected with a second fastening bolt 314. The second T-shaped slider 312 and the second protrusion 312 are limited by the second fastening bolt 314, thereby positioning and fixing the second slide block 310 to ensure that the workpiece 500 is within the telescopic stroke of the second telescopic cylinder 320 and can clamp and limit the workpiece 500.

[0047] refer to Figure 6 The first slide block 210 includes a first protrusion 211 and a first T-shaped slider 212. The first protrusion 211 is disposed on the worktable 110, and the top of the first protrusion 211 is connected to the bottom of the first telescopic cylinder 220. The top of the first T-shaped slider 212 is connected to the bottom of the first protrusion 211. The first T-shaped slider 212 is located inside the worktable 110. The top of the worktable 110 is provided with a first slide groove 213 that cooperates with the first T-shaped slider 212. The first T-shaped slider 212 and the first protrusion 211 are threadedly connected with a first fastening bolt 214. The first protrusion 211 drives the first T-shaped slider 212 to slide in the first slide groove 213, thereby adjusting the position of the first telescopic cylinder 220 so that the first telescopic cylinder 220 completes its stroke and just contacts the workpiece 500. Then, the first fastening bolt 214 limits the first T-shaped slider 212 and the first protrusion 211, thereby positioning and fixing the first slide block 210.

[0048] The implementation principle of this application embodiment is as follows: In implementation, the workpiece 500 is placed on the balance testing mechanism 400 on the frame 100, and the balance testing mechanism 400 performs a balance test on the workpiece 500. When the workpiece 500 is dynamically unbalanced, it needs to be milled by the milling machine mechanism 600 to remove weight. The workpiece 500 needs to be clamped so that the oil pressure of the first telescopic cylinder 220 on the first limit member 200 is greater than that of the second telescopic cylinder 320 on the second limit member 300. Then, the first telescopic cylinder 220 on the first limit member 200 is activated, driving the first protrusion 211 to slide. Controlled by the first proximity switch 230, the first telescopic cylinder 220 completes its stroke. The first slide block 210 is fixed to the worktable 110 by tightening the first fastening bolt 214 to make it contact the surface of the workpiece 500. The first limiting member 200 is then fixed to position one side of the workpiece 500. Then the second limiting member 300 is activated, and the second telescopic cylinder 320 on the second limiting member 300 extends and retracts to clamp the workpiece 500. Under the positioning action of the first limiting member 200, the offset of the workpiece 500 is reduced, the pushing of the workpiece 500 on the spindle of the balance testing mechanism 400 is reduced, and the impact on the operation of the balance testing mechanism 400 is reduced, thereby reducing the damage to the balance testing mechanism 400.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concentric clamping mechanism that uses different hydraulic pressures to control two sets of hydraulic cylinders, characterized in that, It includes a first limiting member (200) and a second limiting member (300) for clamping the workpiece (500). The first limiting member (200) is disposed on the opposite side of the second limiting member (300). The oil pressure of the first limiting member (200) is greater than the oil pressure of the second limiting member (300). The first limiting member (200) contacts the workpiece (500) exactly when its stroke is completed.

2. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures as described in claim 1, characterized in that, The bottom of the first limiting member (200) and the second limiting member (300) are both provided with a worktable (110) for connecting with the frame (100). The first limiting member (200) and the second limiting member (300) are slidably connected to the worktable (110). The worktable (110) is provided with a balance testing mechanism (400). The workpiece (500) is placed on the balance testing mechanism (400).

3. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 2, characterized in that, The first limiting member (200) includes a first slide (210), which is slidably connected to the worktable (110), and a first telescopic cylinder (220) is installed on the top of the first slide (210).

4. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 3, characterized in that, The first telescopic cylinder (220) is provided with a first proximity switch (230) for controlling the first telescopic cylinder (220).

5. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 3, characterized in that, The first slide block (210) includes a first protrusion (211) for support. The top of the first protrusion (211) is connected to the first telescopic cylinder (220), and the bottom of the first protrusion (211) is connected to two first T-shaped sliders (212). The top of the worktable (110) is provided with a first groove (213) that cooperates with the first T-shaped sliders (212). The first protrusion (211) and the first T-shaped sliders (212) are threaded with first fastening bolts (214) for fixing.

6. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 2, characterized in that, The second limiting member (300) includes a second slide (310); the second slide (310) is slidably connected to the worktable (110), and a second telescopic cylinder (320) for clamping the workpiece (500) is connected to the top of the second slide (310).

7. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 6, characterized in that, The second telescopic cylinder (320) is provided with a second proximity switch (330) for controlling the second telescopic cylinder (320).

8. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 6, characterized in that, The second slide block (310) includes a second protrusion (311) for support. The top of the second protrusion (311) is connected to the second telescopic cylinder (320), and the bottom of the second protrusion (311) is connected to two second T-shaped sliders (312). The top of the worktable (110) is provided with a second slide groove (313) that cooperates with the second T-shaped sliders (312). The second protrusion (311) and the second T-shaped sliders (312) are threaded with second fastening bolts (314) for fixing.

9. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 1, characterized in that, The contact surfaces of the first limiting member (200) and the second limiting member (300) with the workpiece (500) are arc surfaces, and the arc surfaces on the first limiting member (200) and the second limiting member (300) are adapted to the workpiece (500).

10. The concentric clamping mechanism for controlling two sets of hydraulic cylinders using different hydraulic pressures according to claim 2, characterized in that, The bottom of the workbench (110) is connected to a frame (100); a milling machine mechanism (600) is provided on the frame (100), the milling machine mechanism (600) is used in conjunction with the workpiece (500), and the balance test mechanism (400) is installed on the frame (100).

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