Clamp for machining inner plum blossom of ball pin

Abstract

The utility model belongs to the technical field of machining clamps, and particularly relates to a machining clamp for an inner plum blossom of a ball stud, the ball stud comprises a ball head, a screw portion and a collar portion, an inner plum blossom hole is formed in the ball head, the clamp comprises a base, a clamping mechanism and an adjusting mechanism, the base is provided with a supporting seat used for placing the ball stud, the clamping mechanism is installed on the base, and the adjusting mechanism is installed on the screw portion. The adjusting mechanism is installed on the base and used for adjusting and aligning the position of the ball pin; wherein an insertion hole is formed in the axis of the supporting seat, and the adjusting mechanism is used for adjusting the ball pin to be coaxial with the insertion hole; the inserting hole is formed in the axis of the supporting base, the ball pin and the inserting hole are adjusted to be coaxial through the adjusting mechanism and then clamped and fixed through the clamping mechanism, the axis of the ball pin is adjusted to coincide with the original point with the axis of the inserting hole as the original point, and therefore eccentricity can be effectively avoided and the product quality can be guaranteed when the inner plum blossom of the ball is machined.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing fixtures, and particularly relates to a processing fixture for the internal plum blossom of a ball pin. Background Art

[0002] A ball pin is a common connecting piece, which has a connecting head (i.e., a ball head) and a threaded rod. Nowadays, in order to ensure the accuracy of connection and positioning, the stability of load transmission, and the anti-loosening performance and convenience, some ball pins usually have an internal plum blossom hole opened at the ball head part. For example, a ball pin disclosed in Chinese Patent Application No. (CN202010942622.1) includes a ball head with an internal plum blossom hole, a threaded rod, and a collar part arranged around the threaded rod.

[0003] When processing the internal plum blossom hole of the ball head, the accuracy of the clamping position of the ball pin directly affects the processing accuracy of the internal plum blossom hole. If the position of the ball pin on the milling machine deviates, it will directly cause the internal plum blossom hole to be eccentric, and then the ball pin will be scrapped. Therefore, a processing fixture is needed to clamp the ball pin when processing the internal plum blossom hole to avoid the eccentricity of the internal plum blossom hole. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a processing fixture for the internal plum blossom of a ball pin aiming at the above existing technical problems, achieving the effect of improving the installation accuracy during the internal plum blossom processing of the ball pin and avoiding eccentricity.

[0005] In view of this, the utility model provides a processing fixture for the internal plum blossom of a ball pin. The ball pin includes a ball head, a screw rod part, and a collar part, and an internal plum blossom hole is opened on the ball head. The fixture includes:

[0006] A base, which is installed with a support seat for placing the ball pin;

[0007] A clamping mechanism, which is installed on the base and is used for fixing the ball pin;

[0008] An adjusting mechanism, which is installed on the base and is used for adjusting and aligning the position of the ball pin;

[0009] Wherein, a jack is opened at the center of the axis of the support seat, and the adjusting mechanism is used for adjusting the coaxiality of the ball pin and the jack.

[0010] In the above technical solution, further, the adjusting mechanism includes:

[0011] A cylinder block, which is installed on the base through a first base, is arranged around the support seat in multiple numbers, and a piston head is slidably connected inside;

[0012] A piston rod, which is connected to the piston head and extends out of the cylinder block towards the support seat side;

[0013] A spring is sleeved on the surface of the piston rod, and both ends thereof are respectively abutted against the cylinder block and the piston head.

[0014] Wherein, a cavity is formed between the inner wall of the cylinder block and the piston head, and the cavity is connected to a power source.

[0015] In the above technical solution, further, the adjusting mechanism further includes:

[0016] A push plate is connected to the end of the piston rod away from the piston head, and the top end thereof is higher than the surface of the support base.

[0017] Wherein, the dimensions of the length and width of the support base in the horizontal direction are both equal to the diameter dimension of the ring part of the spherical head pin shaft, and the diameter dimension of the jacking hole is larger than the diameter dimension of the screw part.

[0018] In the above technical solution, further, the adjusting mechanism further includes:

[0019] A connecting pipe includes an annular pipeline and a plurality of sub-pipelines respectively used for connecting the annular pipeline and the cavities in a plurality of cylinder blocks.

[0020] Wherein, the power source is communicated with the cavity in a single cylinder block.

[0021] In the above technical solution, further:

[0022] An inlet and an outlet are formed on the side surface of the cylinder block communicated with the power source, the inlet is connected with an input pipe, the outlet is connected with a return pipe, and valves for controlling opening and closing are arranged on both the input pipe and the return pipe.

[0023] In the above technical solution, further, the clamping mechanism includes:

[0024] Clamping plates are respectively installed on the base through second bases at both ends, and the top surface of the second base is lower than the top surface of the shaft ring part after the spherical head pin is installed on the support base.

[0025] Wherein, through holes are formed at both ends of the clamping plate, threaded holes corresponding to the through holes are formed on the second base, and bolts pass through the through holes and are in threaded connection with the threaded holes.

[0026] In the above technical solution, further, the clamping mechanism further includes:

[0027] An elastic pad is installed on the second base and is located between the second base and the clamping plate.

[0028] The beneficial effects of the present utility model are:

[0029] 1. By opening a jack at the axis center of the support base, adjusting the ball head pin to be coaxial with the jack through the adjustment mechanism, and then clamping and fixing it by the clamping mechanism, with the axis center of the jack as the origin, adjusting the axis center of the ball head pin to coincide with the origin. Thus, when machining the internal plum blossom of the ball head, eccentricity can be effectively avoided, ensuring product quality.

[0030] 2. Adopting multiple cylinders arranged around the support base, when driving the piston column to slide, the push plate is pushed to abut against the surface of the support base, so that the shaft collar part is flush with the surface of the support base at multiple angles, making the axis centers of the ball head pin and the jack coincide, avoiding eccentricity, and ensuring product quality.

[0031] 3. And through the setting of the connecting pipe, only input to a single cylinder is required. When there is a deviation in the initial placement of the ball head pin, after the piston column slidingly connected to this cylinder pushes the push plate to abut against the side of the support platform, the power source is resisted in this cylinder and will drive the piston columns on the other cylinders through the connecting pipe. Thus, when all the push plates abut against the side of the support platform, the position deviation of the ball head pin can be adjusted, and only a single power source is required, reducing the manufacturing cost.

[0032] 4. By adjusting the two valves on the input pipe and the return pipe, the power source is pumped in or unloaded under the action of the spring reset potential energy, with high response efficiency and can effectively improve the feeding efficiency. Description of the Drawings

[0033] Figure 1 is the structural schematic diagram of the present utility model;

[0034] Figure 2 is the top view of the present utility model;

[0035] Figure 3 is the present utility model Figure 2 the sectional view taken along A - A of the present utility model;

[0036] Figure 4 is the present utility model Figure 3 the enlarged view at B of the present utility model;

[0037] Figure 5 is the partial explosion schematic diagram of the present utility model;

[0038] The markings in the figure are as follows: 1. Ball head pin; 100. Ball head; 101. Screw rod part; 102. Collar part; 103. Internal plum blossom hole; 2. Base; 3. Support seat; 30. Jack hole; 4. Clamping mechanism; 40. Clamping plate; 41. Second base; 42. Through hole; 43. Threaded hole; 44. Elastic pad; 5. Adjusting mechanism; 50. Cylinder block; 500. Inlet; 501. Outlet; 51. First base; 52. Piston head; 53. Piston rod; 54. Spring; 55. Cavity; 56. Push plate; 57. Connecting pipe; 570. Annular pipeline; 571. Sub-pipeline; 58. Input pipe; 59. Return pipe; 6. Valve. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0040] Embodiment 1:

[0041] This embodiment provides a fixture for machining the internal plum blossom of a ball head pin. The ball head pin 1 includes a ball head 100, a screw rod part 101 and a collar part 102, and an internal plum blossom hole 103 is provided on the ball head 100. The fixture includes:

[0042] A base 2, on which a support seat 3 for placing the ball head pin 1 is installed;

[0043] A clamping mechanism 4, installed on the base 2 and used for fixing the ball head pin 1;

[0044] An adjusting mechanism 5, installed on the base 2 and used for adjusting and aligning the position of the ball head pin 1;

[0045] Among them, a jack hole 30 is provided at the axis center of the support seat 3, and the adjusting mechanism 5 is used to adjust the ball head pin 1 to be coaxial with the jack hole 30;

[0046] At the same time, the support seat 3 and the base 2 are fixedly connected by bolts, and one end of the support seat 3 connected to the base 2 is a flange end, thereby improving the structural strength and stability of the support seat 3 and ensuring the machining accuracy.

[0047] It can be seen from this embodiment that by providing a jack hole 30 at the axis center of the support seat 3 and adjusting the ball head pin 1 to be coaxial with the jack hole 30 by the adjusting mechanism 5 and then clamping and fixing it by the clamping mechanism 4, with the axis center of the jack hole 30 as the origin, the axis center of the ball head pin 1 is adjusted to coincide with the origin. Therefore, when machining the internal plum blossom of the ball head 100, eccentricity can be effectively avoided and the product quality can be ensured.

[0048] Embodiment 2:

[0049] This embodiment provides a fixture for machining the internal plum blossom of a ball pin. In addition to the technical solutions of the above embodiment, it also has the following technical features. The adjustment mechanism 5 includes:

[0050] A cylinder block 50, which is installed on the base 2 through a first base 51, is arranged in a plurality around the support seat 3, and a piston head 52 is slidably connected inside;

[0051] A piston rod 53, which is connected to the piston head 52 and extends out of the cylinder block 50 towards the support seat 3;

[0052] A spring 54, which is sleeved on the surface of the piston rod 53, and both ends are respectively abutted against the cylinder block 50 and the piston head 52;

[0053] Wherein, a cavity 55 is formed between the inner wall of the cylinder block 50 and the piston head 52, and the cavity 55 is connected to a power source;

[0054] At the same time, the power source can be a hydraulic system or a pneumatic system, and no matter it is a hydraulic system or a pneumatic system, its specific structure is an existing mature technology and will not be elaborated here.

[0055] It can be seen from this embodiment that by arranging a plurality of cylinder blocks 50 around the support seat 3, under the drive of the power source, the piston head 52 is pushed, and then the piston rod 53 is pushed out of the cylinder block 50, and the ball pin 1 on the support seat 3 is pushed, so as to adjust the position of the ball pin 1 to make it coincide with the axis of the jack 30, avoiding eccentricity during the machining of the internal plum blossom and improving the product quality;

[0056] After the machining is completed, it is automatically reset by the spring 54, which is convenient for replacing the next workpiece and improving the production and machining efficiency.

[0057] Embodiment 3:

[0058] This embodiment provides a fixture for machining the internal plum blossom of a ball pin. In addition to the technical solutions of the above embodiment, it also has the following technical features. The adjustment mechanism 5 further includes:

[0059] A push plate 56, which is connected to the end of the piston rod 53 far from the piston head 52, and the top end is higher than the surface of the support seat 3;

[0060] Wherein, the dimensions of the length and width of the support seat 3 in the horizontal direction are both equal to the diameter dimension of the collar part 102 of the ball pin 1, and the diameter dimension of the jack 30 is larger than the diameter dimension of the screw part 101;

[0061] At the same time, the support seat 3 is also provided with stoppers, and there are a plurality of stoppers, which are respectively arranged at the four corners of the top surface of the support seat 3 to ensure that the surface of the push plate 56 is flush with the side surface of the support seat 3 after abutting against the surface of the support seat 3.

[0062] It can be seen from this embodiment that through the setting of the push plate 56, and the length and width dimensions of the support base 3 in the horizontal direction are both equal to the diameter dimension of the collar portion 102 of the ball head pin 1, it is convenient to adjust and increase the contact area with the side surface of the support base 3, ensure the pushing of the part of the ball head pin 1 protruding from the surface of the support base 3, ensure the adjustment of the position of the ball head pin 1, make it more easily restricted by the support table, ensure the position accuracy, and avoid eccentricity;

[0063] And the diameter dimension of the jack 30 is larger than the diameter dimension of the screw portion 101, which can improve the convenience of placing the ball head pin 1 on the support base 3 and improve the feeding efficiency.

[0064] Embodiment 4:

[0065] This embodiment provides a ball head pin internal plum blossom processing fixture. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The adjustment mechanism 5 further includes:

[0066] A connecting pipe 57, including an annular pipeline 570 and a plurality of sub-pipelines 571 respectively used to connect the annular pipeline 570 and the cavities 55 in the plurality of cylinders 50;

[0067] Wherein, the power source is communicated with the cavity 55 in a single cylinder 50.

[0068] It can be seen from this embodiment that through the setting of the connecting pipe 57, only a single cylinder 50 needs to be input. When the ball head pin 1 has a deviation during the initial placement, after the piston column 53 slidably connected to the cylinder 50 pushes the push plate 56 to abut against the side surface of the support table, the power source is resisted in the cylinder 50 and will drive the piston columns 53 on the other cylinders 50 through the connecting pipe 57. Then, when all the push plates 56 abut against the side surface of the support table, the deviation position of the ball head pin 1 can be adjusted to make it centered and coincide with the axis of the jack 30, and only a single power source is required, reducing the manufacturing cost.

[0069] Embodiment 5:

[0070] This embodiment provides a ball head pin internal plum blossom processing fixture. In addition to including the technical solutions of the above embodiments, it also has the following technical features:

[0071] The side surface of the cylinder 50 communicated with the power source is provided with an inlet 500 and an outlet 501, and the inlet 500 is connected with an input pipe 58, the outlet 501 is connected with a return pipe 59, and valves 6 for controlling the opening and closing are arranged on both the input pipe 58 and the return pipe 59;

[0072] Wherein, the valve 6 can adopt a micro solenoid valve to improve the convenience and efficiency of control.

[0073] It can be seen from this embodiment that by adjusting the two valves 6 on the input pipe 58 and the return pipe 59, the power source can be pumped in or discharged under the action of the reset potential energy of the spring 54, with high response efficiency and effectively improving the feeding efficiency.

[0074] Specifically, after the ball head pin 1 to be processed is placed, the valve 6 in the input pipe 58 is opened, and the power source pumps gas or hydraulic oil into the cavity 55, thereby pushing the piston column 53 to move, and the spring 54 is compressed. When the push plate 56 abuts against the side of the support table, it will encounter resistance, and the gas or hydraulic oil will enter the cavities 55 of the remaining cylinder blocks 50 through the connecting pipe 57, so that multiple piston columns 53 all move until each push plate 56 abuts against the side of the support table, completing the adjustment of the ball head pin 1 and maintaining the adjustment mechanism 5. At the same time, the clamping mechanism 4 clamps the ball head pin 1. After the processing is completed, the clamping mechanism 4 is loosened, the valve 6 on the input pipe 58 is closed, and the valve 6 on the return pipe 59 is opened at the same time. The pressure is released under the action of the compressed spring 54. After replacing the ball head pin 1 to be processed, the above operations are repeated. The operation is simple and the response efficiency is high, effectively improving the feeding efficiency.

[0075] Embodiment 6:

[0076] This embodiment provides a ball head pin internal plum blossom processing fixture. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The clamping mechanism 4 includes:

[0077] The clamping plates 40 are installed on the base 2 through the second bases 41 provided at both ends, and the top surface of the second base 41 is lower than the top surface of the collar portion 102 of the ball head pin 1 after it is installed on the support seat 3.

[0078] Wherein, through holes 42 are opened at both ends of the clamping plate 40, threaded holes 43 corresponding to the through holes 42 are opened on the second base 41, and bolts pass through the through holes 42 and are threadedly connected with the threaded holes 43.

[0079] At the same time, the diameter dimension of the through hole 42 is larger than the diameter dimensions of the threaded hole 43 and the bolt.

[0080] It can be seen from this embodiment that by using the clamping plates 40 and connecting and fixing both ends thereof with bolts, the structure is simple, the stability is good, the manufacturing cost is low, and the dimension between the through holes 42 is larger than the diameter dimensions of the threaded hole 43 and the bolt. After removing the bolt at one end of the clamping plate 40, only the other end needs to be loosened, and it does not need to be removed, so that the clamping plate 40 can rotate, ensuring the feeding efficiency.

[0081] Embodiment 7:

[0082] This embodiment provides a processing fixture for the internal plum blossom of a ball head pin. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The clamping mechanism 4 further includes:

[0083] An elastic pad 44, which is installed on the second base 41 and is located between the second base 41 and the clamping plate 40;

[0084] Among them, the elastic pad 44 is made of rubber, and its thickness should not be too thick. Specifically, 3-5 mm is acceptable;

[0085] At the same time, the height dimension of the top surface of the second base 41 should be slightly smaller than the height dimension of the top surface of the shaft collar portion 102 of the ball head pin 1 to be processed after it is placed on the support base 3. Specifically, it is 1-2 mm. And the total height dimension of the second base 41 and the elastic pad 44 should be greater than the height dimension of the top surface of the shaft collar portion 102 of the ball head pin 1 to be processed after it is placed on the support base 3.

[0086] It can be seen from this embodiment that through the setting of the elastic pad 44, the connection strength after the bolt fixes the clamping plate 40 can be improved, and the fixation of the ball head pin 1 can be ensured.

[0087] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A processing fixture for the internal plum blossom of a ball head pin. The ball head pin (1) includes a ball head (100), a screw rod portion (101), and a collar portion (102), and an internal plum blossom hole (103) is provided on the ball head (100). It is characterized in that, The fixture includes: A base (2) installed with a support seat (3) for placing the ball head pin (1); A clamping mechanism (4) installed on the base (2) and used for fixing the ball head pin (1); An adjustment mechanism (5) installed on the base (2) and used for adjusting and aligning the position of the ball head pin (1); Wherein, a jack (30) is provided at the axis center of the support seat (3), and the adjustment mechanism (5) is used to adjust the coaxiality of the ball head pin (1) and the jack (30).

2. The ball head pin inner plum blossom processing fixture according to claim 1, characterized in that, The adjustment mechanism (5) includes: A cylinder block (50) installed on the base (2) through a first base (51), arranged in a plurality around the support seat (3), and internally slidably connected with a piston head (52); A piston rod (53) connected to the piston head (52) and extending out of the cylinder block (50) towards the support seat (3); A spring (54) sleeved on the surface of the piston rod (53), and the two ends respectively abut against the cylinder block (50) and the piston head (52); Wherein, a cavity (55) is formed between the inner wall of the cylinder block (50) and the piston head (52), and the cavity (55) is connected with a power source.

3. The ball head pin inner plum blossom machining fixture according to claim 2, wherein, The adjustment mechanism (5) further includes: A push plate (56) connected to the end of the piston rod (53) away from the piston head (52), and the top end is higher than the surface of the support seat (3); Wherein, the dimensions of the length and width of the support seat (3) in the horizontal direction are both equal to the diameter dimension of the collar part (102) of the ball head pin (1), while the diameter dimension of the jack (30) is larger than the diameter dimension of the screw part (101).

4. The ball head pin inner plum blossom processing fixture according to claim 3, characterized in that The adjustment mechanism (5) further includes: A connecting pipe (57) including an annular pipeline (570) and a plurality of sub - pipelines (571) respectively used for connecting the annular pipeline (570) and the cavities (55) in a plurality of cylinder blocks (50); Wherein, the power source is communicated with the cavity (55) in a single cylinder block (50).

5. The internal plum blossom processing fixture for the ball head pin according to claim 4, characterized in that: An inlet (500) and an outlet (501) are provided on the side of the cylinder block (50) communicated with the power source, the inlet (500) is connected with an input pipe (58), the outlet (501) is connected with a return pipe (59), and valves (6) for controlling opening and closing are provided on both the input pipe (58) and the return pipe (59).

6. The ball head pin inner plum blossom machining fixture according to claim 1, characterized in that, The clamping mechanism (4) includes: Clamping plates (40) installed on the base (2) at both ends through second bases (41), and the top surface of the second base (41) is lower than the top surface of the collar part (102) of the ball head pin (1) after being installed on the support seat (3); Wherein, through holes (42) are provided at both ends of the clamping plate (40), threaded holes (43) corresponding to the through holes (42) are provided on the second base (41), and bolts pass through the through holes (42) and are threadedly connected with the threaded holes (43).

7. The ball head pin inner plum blossom processing fixture according to claim 6, characterized in that, The clamping mechanism (4) further includes: Elastic pads (44) installed on the second base (41) and located between the second base (41) and the clamping plate (40).

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