A compression system for disc spring assembly and method of use thereof

Abstract

The application discloses a kind of for disc spring assembly compression systems, including C-shaped frame, assembly positioning device is provided on the C-shaped frame, and disc spring product to be pressed is placed in the assembly positioning device, assembly pressing head and oil pressure control system are sequentially arranged above the assembly positioning device, the assembly pressing head is given pressure by the oil pressure control system, positioning piece and locking piece are arranged in the assembly pressing head, disc spring product is positioned by the positioning piece, and disc spring product is locked by the locking piece;The application also discloses the use method of the compression system for disc spring assembly, by the above mode, the application not only clamping is convenient, simple, fast, and reliability and stability are greatly improved, and its clamping efficiency and yield are effectively promoted.

Description

A clamping system for disc spring assembly and its usage method Technical Field

[0001] This invention relates to the field of disc spring assembly technology, and in particular to a clamping system for disc spring assembly and its method of use. Background Technology

[0002] During the assembly process of components, assembly tooling or equipment is required to position and fix the product. This is especially true for some assemblies with special requirements, which not only need to be assembled under certain pressure, but also require high precision in assembly.

[0003] Figures 1 and 2 show a common disc spring product, including a spindle 201, a pin 202 mounted on one side of the spindle 201, and a body 203 fitted onto the outside of the spindle 201. The pin 201 is correspondingly engaged in a groove in the body 203. Above the spindle 201, a washer 204, a disc spring 205, a washer 206, and a locking nut 207 are sequentially mounted. This type of disc spring product requires press-fitting under a certain pressure after the disc spring and spindle are aligned. The quality of the press-fitting directly affects the product's performance. Currently, manual clamping fixtures are commonly used. While this method can achieve assembly, it cannot accurately control the press-fitting pressure, nor can it ensure the positioning accuracy of the disc spring during press-fitting. Furthermore, the speed and quality of press-fitting are difficult to meet increasingly stringent usage requirements. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a clamping system for disc spring assembly and its usage method, which is not only convenient, simple and fast to clamp, but also greatly improves reliability and stability, and effectively enhances clamping efficiency and yield.

[0005] To solve the above-mentioned technical problems, the present invention provides a pressing system for assembling disc springs, including a C-shaped frame, an assembly positioning device on the C-shaped frame, a disc spring product to be pressed and positioned in the assembly positioning device, an assembly pressure head and a hydraulic control system arranged sequentially above the assembly positioning device, pressure being applied to the assembly pressure head by the hydraulic control system, and a locking element provided inside the assembly pressure head to lock the disc spring product.

[0006] Preferably, the hydraulic control system includes a pressure sensor disposed above the assembly pressure head, a force gauge for use is disposed on one side of the C-frame, and a hydraulic press is disposed above the pressure sensor, the hydraulic press including a pressure head and a force-applying cylinder.

[0007] Preferably, a limit shaft is provided between the pressure head and the force-applying cylinder, and a limit bracket parallel to the force-applying cylinder is provided on the C-shaped frame. Limit switches for controlling the movement range of the limit shaft are respectively provided at the upper and lower ends of the limit bracket. A hydraulic control switch for controlling the operation of the hydraulic control system and a positioning control switch for controlling the operation of the assembly positioning device are respectively provided on the side of the C-shaped frame.

[0008] Preferably, the assembly positioning device includes an assembly base mounted on the C-frame, the flatness of the upper and lower surfaces of the assembly base being less than 0.05 mm, and the assembly base being provided with a disc spring clamping unit and a spindle positioning unit respectively.

[0009] Preferably, the disc spring clamping unit includes two equal-height support seats symmetrically arranged on the assembly base. Each equal-height support seat is correspondingly provided with a dual-axis cylinder. Each dual-axis cylinder is horizontally connected to the sliding block and the clamping auxiliary block. Each clamping auxiliary block has a contoured groove recessed on its opposite side.

[0010] Preferably, the two equal-height support bases are implemented by leaving a 0.5mm allowance when processing each equal-height support base individually, and then processing off the 0.5mm allowance by machine after installation onto the assembly base.

[0011] Preferably, a support main seat is provided between the equal-height support seats, and a sliding groove is provided in the support main seat to slide with each of the sliding blocks. A linear guide rail is horizontally provided on the outer side of the support main seat, and a guide rail slider is slidably provided between each of the sliding blocks and the linear guide rail.

[0012] Preferably, the spindle positioning unit includes a positioning groove that extends through the support base in the height direction, a spindle positioning strip is provided on one side of the positioning groove, and an expansion and displacement pushing mechanism is provided on the other side of the positioning groove.

[0013] Preferably, the expansion and displacement pushing mechanism includes a thin-walled cylinder disposed in the main support seat, the top of the thin-walled cylinder is provided with a one-way side clamp, the one-way side clamp is obliquely slidably provided with an oblique push block on the side facing the disc spring product, and the opposite side of the one-way side clamp is vertically slidably provided with a longitudinal push block.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is: to provide a method of using a clamping system for disc spring assembly, comprising the following steps:

[0015] (a) Press the hydraulic control switch (10), and the force-applying cylinder (62) moves upward and stops moving after touching the upper limit switch (9);

[0016] (b) Place the disc spring product to be pressed into the positioning groove (22) in the assembly positioning device and press the positioning control switch (11);

[0017] (c) The thin-walled cylinder (24) drives the one-way side chuck (25) to move downward, and the inclined push block (26) opens to both sides, touching the side straight surface of the spindle in the disc spring product, and positioning the spindle.

[0018] (d) The dual-axis cylinder (14) drives the clamping auxiliary block (16) to lock and position the disc spring from both sides;

[0019] (e) Press the hydraulic control switch (10) again, the force cylinder (62) slides down, the assembly pressure head (2) continues to press down the pad above the disc spring until the set value, and then maintains the pressure, and locks the locking nut above the pad by the locking part (3);

[0020] (f) Press the hydraulic control switch (10) again, and the force-applying cylinder (62) slides upward and stops after touching the upper limit switch (9);

[0021] (g) Press the positioning control switch (11) again, the clamping and positioning mechanism returns to its original position, and the workpiece can be taken out. The pressing process of a single product is completed, and the subsequent work is carried out in the same cycle as above.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a clamping system and its usage method for disc spring assembly. Compared with traditional clamping methods, it is not only faster and more convenient, but also has good reliability and stability. Once the clamping force is set, no manual adjustment is required, and clamping efficiency and yield are greatly improved. This clamping system effectively reduces defects caused by manual clamping. The device has a service life of more than three years and low maintenance costs. It is highly versatile and effectively reduces the design and manufacturing costs of dedicated clamping devices. At the same time, the clamping accuracy is significantly improved compared with traditional clamping methods. This clamping system was independently developed by the applicant and is especially suitable for the assembly of disc spring products, with very good technical promotion value. Attached Figure Description

[0024] Figure 1 is a structural schematic diagram of the disc spring product used for press fitting according to the present invention;

[0025] Figure 2 is a schematic diagram of the disc spring product in Figure 1 from another angle, used to show the state in which the pin is stuck in the groove of the main body;

[0026] Figure 3 is a schematic diagram of the overall structure of a clamping system for disc spring assembly according to the present invention;

[0027] Figure 4 is a schematic diagram of the assembly positioning device in a clamping system for disc spring assembly according to the present invention.

[0028] Figure 5 is a partial schematic diagram of the assembly positioning device of the present invention, which is used to illustrate the structure of the inner contour groove of the clamping auxiliary block;

[0029] Figure 6 is a partial schematic diagram of the assembly positioning device of the present invention, used to illustrate the positioning principle of the spindle;

[0030] Figure 7 is a partial schematic diagram of the assembly positioning device of the present invention, used to illustrate the positioning principle of the main body.

[0031] The components in the attached diagram are labeled as follows:

[0032] 1. C-frame; 2. Assembly head; 3. Locking component; 4. Pressure sensor; 5. Force gauge; 6. Hydraulic press; 61. Head; 62. Force-applying cylinder; 7. Limit shaft; 8. Limit bracket; 9. Limit switch; 10. Hydraulic control switch; 11. Positioning control switch; 12. Assembly base; 13. Equal height support; 14. Dual-axis cylinder; 15. Sliding block; 16. Clamping auxiliary block; 17. Contouring groove; 18. Support main seat; 19. Sliding groove; 20. Linear guide rail; 21. Guide rail slider; 22. Positioning groove; 23. Spindle positioning bar; 24. Thin-walled cylinder; 25. One-way side chuck; 26. Angled push block; 27. Longitudinal push block. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0034] Example:

[0035] As shown in Figures 3 and 4, a clamping system for disc spring assembly includes a C-frame 1, which is the load-bearing structure of the entire pressure device and can be fixed in the required position by screws. The C-frame 1 includes a worktable, on which an assembly positioning device is mounted. The disc spring product to be clamped is placed in the assembly positioning device, and an assembly pressure head 2 is provided above the assembly positioning device. The assembly pressure head 2 is the clamping element of this clamping device, which must ensure that it is clamped to the workpiece and that the nut can be locked. Therefore, a round hole is provided at the bottom of the assembly pressure head 2 to facilitate the locking of the locking element 3. A square groove is carved in the middle of the assembly pressure head 2 to facilitate the removal and placement of the locking element 3. It is fixed to the conversion plate above by screws, effectively realizing the locking of the disc spring product by the locking element 3 passing through the assembly pressure head 2.

[0036] As shown in Figures 3 and 4, a hydraulic control system is installed above the assembly head 2. The hydraulic control system applies pressure to the assembly head 2. The hydraulic control system includes a pressure sensor 4 installed above the assembly head 2. A force gauge 5 is installed on one side of the C-frame 1 for use in conjunction with the pressure sensor 4. The force gauge 5 is used to set the pressure and monitor the data of the sensor 4 in real time to ensure that the device works within the set pressure value. The sensor 4 and the force gauge 5 are connected and are mainly used to control whether the hydraulic cylinder pressure is working. The hydraulic control system feeds the pressure back to the sensor 4. The force gauge 5 gives the set pressure and displays the pressure value. When the pressure value is not reached, the hydraulic control system will continue to pressurize. When the pressure reaches the set pressure, the hydraulic control system stops pressurizing and locks the pressure. At this time, the locking nut above the disc spring product can be locked and positioned by the locking component 3.

[0037] As shown in Figures 3 and 4, a hydraulic press 6 is installed above the pressure sensor 4. The hydraulic press 6 includes a pressure head 61 and a force-applying cylinder 62. The pressure head 61 and the force-applying cylinder 62 work together to provide a force-applying element. A limit shaft 7 is installed between the pressure head 61 and the force-applying cylinder 62. A limit bracket 8 parallel to the force-applying cylinder 62 is installed on the C-frame 1. Limit switches 9 for controlling the movement range of the limit shaft 7 are respectively installed at the upper and lower ends of the limit bracket 8. The tail of the limit switch is connected to the control element of the electrical box through a wire. The limit switch can work according to the command. Through the combination of the limit shaft 7 and the limit switch 9, the working distance of the force-applying cylinder 62 can be effectively controlled to prevent overload operation and damage of the cylinder due to overtravel. The limit shaft 7 moves up and down in the groove of the limit bracket. The limit switch 9 is installed in a suitable position on the limit bracket 8 as needed. When the limit shaft 7 touches the limit switch, it stops working.

[0038] As shown in Figures 3 and 4, the assembly positioning device includes an assembly base 12 mounted on a C-frame 1. All components of the assembly positioning device are installed on this assembly base 12. The assembly base 12 is pre-hardened with P20 and blackened. During processing, the flatness of the upper and lower surfaces must be less than 0.05 mm. It is fixed to the C-frame worktable with screws. A disc spring clamping unit and a spindle positioning unit are respectively installed above the assembly base 12 for positioning the disc spring and the spindle. Simultaneously, a hydraulic control switch 10 for controlling the hydraulic control system and a positioning control switch 11 for controlling the assembly positioning device are respectively installed on the side of the C-frame 1.

[0039] As shown in Figures 4 and 5, the disc spring clamping unit includes two equal-height support seats 13 symmetrically arranged on the mounting base 12. In order to ensure the symmetry of the force points of the upper dual-axis cylinder, the height of the two equal-height support seats 13 must be designed to be the same. This is achieved by leaving a 0.5mm allowance when machining each equal-height support seat 13 individually. After it is installed on the mounting base 12, the 0.5mm allowance is then machined off. This eliminates both machining errors during processing and height errors during clamping.

[0040] As shown in Figures 4 and 5, each equal-height support 13 is equipped with a corresponding dual-axis cylinder 14. The dual-axis cylinder 14 is a clamping element for disc spring positioning. The cylinder pipe of the dual-axis cylinder 14 is connected to the PLC in the electrical box. The cylinder is controlled by a button. Each dual-axis cylinder 14 is horizontally connected to the sliding block 15 and the clamping auxiliary block 16. In order to ensure the durability of the sliding block 15, it needs to be blackened with pre-hardened P20. First, the sliding block 15 and the clamping auxiliary block 16 are connected together with screws. Then, the screws are tightened from the back to connect the two accessories and the dual-axis cylinder 14 together. Each clamping auxiliary block 16 has a recessed contour groove 17 on the opposite side. In order to prevent the material from damaging the disc spring, the clamping auxiliary block 16 is made of aluminum. In order to ensure durability, it is combined with hard anodizing treatment.

[0041] As shown in Figures 4 and 6, a support main seat 18 is provided between two equal-height support seats 13. The support main seat 18 has a sliding groove 19 that slides with each sliding block 15. A linear guide rail 20 is horizontally arranged on the outer side of the support main seat 18. A guide rail slider 21 is slidably arranged between each sliding block 15 and the linear guide rail 20 to ensure the linear accuracy of the clamping sliding. The spindle positioning unit includes a positioning groove 22 that runs through the support main seat 18 in the height direction. A spindle positioning strip 23 is provided on one side of the positioning groove 22 to position the spindle. A corresponding expansion and shifting mechanism is provided on the other side of the positioning groove 22. The expansion and shifting mechanism moves the spindle, and the spindle moves to the set position after it comes into contact with the spindle positioning strip 23.

[0042] As shown in Figures 4, 6, and 7, the expansion and displacement pushing mechanism includes a thin-walled cylinder 24 disposed within the support base 18. The thin-walled cylinder 24 is a pressure input module, fixed to the mounting base plate by screws. A one-way chuck 25 is disposed at the top of the thin-walled cylinder 24. An inclined push block 26 is obliquely slidably disposed on the side of the one-way chuck 25 facing the disc spring product. A longitudinal push block 27 is vertically slidably disposed on the opposite side of the one-way chuck 25. The thin-walled cylinder 24 drives the one-way chuck 25 to move. The longitudinal push block 27 on one side moves vertically, while the inclined push block 26 on the other side moves outward, thereby driving the spindle to move to the position that fits the spindle positioning strip 23, which is the set position.

[0043] The assembly method of this clamping system is as follows:

[0044] Install the force gauge 5 onto the electrical box, install the limit bracket 8 onto the support surface of the C-frame 1, lock the limit switch 9 in the designated position of the limit bracket 8 as required, put the limit shaft 7 onto the piston of the force-applying cylinder 62, and move the limit shaft 7 up and down in the groove of the limit bracket 8. When it touches the limit switch 9, it will feed back to the hydraulic control system. Fix the pressure sensor 4 on the pressure head 61. The pressure sensor 4 is connected to the force gauge 5 and is used to control whether the hydraulic cylinder pressure works. The hydraulic control system feeds back the pressure to the pressure sensor 4. The force gauge 5 gives the set pressure and displays the pressure value. When the pressure does not reach the set pressure, the hydraulic control system will continue to pressurize. When the pressure reaches the set pressure, the hydraulic control system will stop pressurizing and lock the pressure. At this time, the locking nut above the disc spring is locked by the locking part 3.

[0045] To install the disc spring, the pin 202 is mounted on the spindle 201, and the main body 203 is loaded onto the spindle 201. At the same time, the main body 203 is rotated until the pin 202 is engaged in the groove of the main body 203. Then, the washer 204, disc spring 205, shim 206 and locking nut 207 are installed on the spindle 201 in sequence. The locking nut 207 is then gently tightened by hand. When installing the disc spring, pay attention to the direction of the disc spring. First, install it with the three arc surfaces facing up, then install it with the three arc surfaces facing down, then install it with the three arc surfaces facing up again, and continue to install it with the three arc surfaces facing down.

[0046] Lock the equal-height support 13 onto the assembly base 12. Machin the equal-height support 13 into a coplanar shape. Then, install the dual-axis cylinder 14 onto the equal-height support 13. Install the thin-walled cylinder 24 and the main support 18 onto the assembly base 12. Next, install the expansion and shifting mechanism onto the main support 18. Connect the sliding block 15 and the clamping auxiliary block 16 together with screws and place them in the sliding groove 19 of the main support 18. Lock the linear guide rail 20 and the guide rail slider 22 onto the main support 18 to ensure that the sliding block 15 can slide smoothly in the sliding groove 19. All cylinders are connected to the PLC controller. Finally, fix the assembly base 12 onto the workbench of the C-frame 1. The entire assembly of the device is complete.

[0047] The method of using this clamping system is as follows:

[0048] (a) Press the hydraulic control switch 10, and the hydraulic cylinder 62 moves upward and stops moving after touching the upper limit switch 9;

[0049] (b) Place the disc spring product to be pressed into the positioning groove 22 in the assembly positioning device and press the positioning control switch 11.

[0050] (c) The thin-walled cylinder 24 drives the one-way side chuck 25 to move downward, and the inclined push block 26 opens to both sides, touching the side straight surface of the spindle in the disc spring product, and positioning the spindle.

[0051] (d) The dual-axis cylinder 14 drives the clamping auxiliary block 16 to lock and position the disc spring from both sides;

[0052] (e) Press the hydraulic control switch 10 again, the force cylinder 62 slides down, the assembly pressure head 2 continues to press down the pad above the disc spring until the set value is reached, and then the pressure is maintained. The locking nut above the pad is locked by the locking part 3.

[0053] (f) Press the hydraulic control switch 10 again, and the force-applying cylinder 62 slides upward and stops after touching the upper limit switch 9;

[0054] (g) Press the positioning control switch 11 again to return the clamping and positioning mechanism to its original position, and the workpiece can be removed. The pressing process of a single product is completed, and subsequent work is carried out in the same cycle as above.

[0055] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A clamping system for assembling disc springs, characterized in that: The assembly includes a C-frame (1), on which an assembly positioning device is provided. The disc spring product to be press-fitted is placed in the assembly positioning device. An assembly pressure head (2) and a hydraulic control system are arranged sequentially above the assembly positioning device. The hydraulic control system applies pressure to the assembly pressure head (2). A locking element (3) is provided inside the assembly pressure head (2). The locking element (3) locks the disc spring product. The assembly positioning device includes an assembly base (12) on the C-frame (1). A disc spring clamping unit and a spindle positioning unit are respectively provided on the assembly base (12). The disc spring clamping unit includes two equal-height support seats (13) symmetrically arranged on the assembly base (12). A dual-axis cylinder (14) is correspondingly provided on each equal-height support seat (13). Each dual-axis cylinder (14) is horizontally connected to a sliding block (15) and a clamping auxiliary block (16). Each clamping auxiliary block (15) is connected to a sliding block (15) and a clamping auxiliary block (16). 6) Each of the opposite sides is recessed with a contoured groove (17); the two equal height support seats (13) are implemented by leaving a 0.5mm allowance when each equal height support seat (13) is processed separately. After being installed on the assembly base (12), the 0.5mm allowance is processed off by machine; a support main seat (18) is provided between the equal height support seats (13). A sliding groove (19) is provided in the support main seat (18) to slide with each sliding block (15). A linear guide rail (20) is horizontally provided on the outside of the support main seat (18). A guide rail slider (21) is slidably provided between each sliding block (15) and the linear guide rail (20); the spindle positioning unit includes a positioning groove (22) that runs through the height direction of the support main seat (18). A spindle positioning strip (23) is provided on one side of the positioning groove (22). A displacement pushing mechanism is provided on the other side of the positioning groove (22).

2. The clamping system for disc spring assembly according to claim 1, characterized in that: The hydraulic control system includes a pressure sensor (4) located above the assembly head (2), a force gauge (5) for use is provided on one side of the C-frame (1), and a hydraulic press (6) is located above the pressure sensor (4). The hydraulic press (6) includes a head (61) and a force-applying cylinder (62).

3. A clamping system for assembling disc springs according to claim 2, characterized in that: A limit shaft (7) is provided between the pressure head (61) and the force-applying cylinder (62). A limit bracket (8) parallel to the force-applying cylinder (62) is provided on the C-shaped frame (1). Limit switches (9) for controlling the movement range of the limit shaft (7) are provided at the upper and lower ends of the limit bracket (8). A hydraulic control switch (10) for controlling the operation of the hydraulic control system and a positioning control switch (11) for controlling the operation of the assembly positioning device are provided on the side of the C-shaped frame (1).

4. A clamping system for disc spring assembly according to claim 1, characterized in that: The flatness of the upper and lower surfaces of the assembly base (12) must be less than 0.05 mm.

5. A clamping system for disc spring assembly according to claim 1, characterized in that: The expansion and displacement pushing mechanism includes a thin-walled cylinder (24) disposed in the main support (18). A one-way side chuck (25) is disposed at the top of the thin-walled cylinder (24). An oblique push block (26) is obliquely slidably disposed on the side of the one-way side chuck (25) facing the disc spring product. A longitudinal push block (27) is vertically slidably disposed on the opposite side of the one-way side chuck (25).

6. A method of using a clamping system for disc spring assembly according to any one of claims 1 to 5, characterized in that, The steps include: (a) Pressing the hydraulic control switch (10), the force-applying cylinder (62) moves upward and stops after touching the upper limit switch (9); (b) Placing the disc spring product to be press-fitted into the positioning groove (22) in the assembly positioning device, and pressing the positioning control switch (11); (c) The thin-walled cylinder (24) drives the one-way side chuck (25) to move downward, and the oblique push block (26) opens to both sides, touching the lateral straight surface of the spindle in the disc spring product, and positioning the spindle; (d) The dual-axis cylinder (14) drives the clamping auxiliary block (16) to lock the disc spring from both sides. (e) Press the hydraulic control switch (10) again, the force cylinder (62) slides down, the assembly pressure head (2) continues to press down the pad above the disc spring until the set value, and then maintains the pressure, and locks the locking nut above the pad by the locking part (3); (f) Press the hydraulic control switch (10) again, the force cylinder (62) slides up, and stops after touching the upper limit switch (9); (g) Press the positioning control switch (11) again, the clamping positioning mechanism returns to the original position, and the workpiece can be taken out. The pressing process of a single product is completed, and the subsequent work is carried out in the same cycle as above.

Images