A positioning pin mechanism applied to drilling and cutting fixtures

Abstract

This utility model relates to the field of tooling equipment technology, and in particular to a positioning pin mechanism for drilling and cutting tooling. It includes a positioning base, a pin base on the upper part of the positioning base, a liftable positioning pin on the top of the pin base, a sensor on one side of the pin base, and a detection rod on one side of the positioning pin. One end of the movement path of the detection rod intersects with the detection area of ​​the sensor, and the sensor is electrically connected to the drilling and cutting control cabinet. By setting a detection rod in the liftable positioning pin, the detection rod, in conjunction with the sensor, detects the state of the positioning pin. This structure effectively ensures the normal use of the drilling and cutting tooling and guarantees accurate and reliable workpiece positioning.

Description

Technical Field

[0001] This utility model relates to the field of tooling equipment technology, and in particular to a positioning pin mechanism applied to drilling and cutting tooling. Background Technology

[0002] In the field of machining, the locating pin mechanism is the core positioning element of tooling fixtures, and its positioning accuracy directly affects the workpiece machining quality. In existing tooling positioning methods, the locating pin mechanism is an integral type, which has high replacement costs and the position of the mechanism cannot be adjusted; it is also impossible to confirm whether the positioning is successful. Traditional locating pins have problems such as the inability to detect workpiece misalignment, simple structure, and difficulty in guaranteeing positioning accuracy. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a positioning pin mechanism for drilling and cutting tooling, which addresses the above-mentioned technical deficiencies. The mechanism uses a detection rod set in a liftable positioning pin, and the detection rod works with a sensor to detect the status of the positioning pin. This solves the problems of workpiece misalignment that cannot be detected, simple structure, and difficulty in guaranteeing positioning accuracy.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a positioning pin mechanism for drilling and cutting fixtures, including a positioning base, a pin base on the upper part of the positioning base, a liftable positioning pin on the top of the pin base, a sensor on one side of the pin base, a detection rod on one side of the positioning pin, one end of the movement path of the detection rod intersecting the detection area of ​​the sensor, and the sensor being electrically connected to the drilling and cutting control cabinet.

[0005] To further optimize this technical solution, a U-shaped sensing groove is provided on the upper part of the sensor, the length direction of the detection rod is perpendicular to the moving direction of the positioning pin, and the U-shaped sensing groove is set in the moving path of the detection rod.

[0006] To further optimize this technical solution, a limiting post is provided on the upper part of the pin base, and a limiting hole is provided inside the limiting post. The positioning pin is coaxially and slidably set in the limiting hole, and a spring is provided at the bottom of the limiting hole. The spring is connected between the positioning pin and the positioning base.

[0007] To further optimize this technical solution, a limiting cavity is provided at the bottom of the limiting hole, the inner diameter of the limiting cavity is larger than the inner diameter of the limiting hole, a limiting platform is provided at the bottom end of the positioning pin, the outer diameter of the limiting platform is larger than the outer diameter of the positioning pin, the limiting platform is slidably set in the limiting cavity, and the spring is set at the bottom of the limiting cavity.

[0008] To further optimize this technical solution, a connecting seat is provided at the bottom of the pin base, and a limiting groove is provided at the position corresponding to the positioning base and the connecting seat. A second oblong hole is provided in the connecting seat, and the pin base is fixed in the limiting groove by the bolt in the second oblong hole. A first oblong hole is provided in the positioning base, and the oblong length direction of the first oblong hole is perpendicular to the oblong length direction of the second oblong hole.

[0009] To further optimize this technical solution, a connecting plate is provided on one side of the sensor. The connecting plate is connected between the sensor and the pin base. The connecting plate has a third oblong hole. The connecting plate is fixed to the pin base by bolts in the third oblong hole. The oblong length direction of the third oblong hole is parallel to the moving direction of the positioning pin.

[0010] Compared with the prior art, this utility model has the following advantages: 1. By setting a detection rod in the liftable positioning pin, the detection rod, in conjunction with the sensor, detects the status of the positioning pin. This structure effectively ensures the normal use of the drilling and cutting fixture and ensures accurate and reliable workpiece positioning; 2. The first oblong hole allows for the fixation of the positioning base after fine-tuning, the second oblong hole allows for the fixation of the pin base after fine-tuning, and the third oblong hole allows for the fine-tuning and fixation of the connecting plate and the sensor, improving the adaptability of the positioning pin mechanism; 3. It is a modular and detachable structure, making it convenient to replace and maintain individual parts, thus reducing maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the external structure of a positioning pin mechanism used in drilling and cutting fixtures. Figure 2 An exploded view of a positioning pin mechanism used in drilling and cutting fixtures; Figure 3 This is a cross-sectional view of a positioning pin mechanism used in drilling and cutting fixtures at the limiting hole. Figure 4 This is a schematic diagram of a positioning pin mechanism used in drilling and cutting fixtures.

[0012] In the diagram: 1. Positioning base; 11. Limiting groove; 110. First oblong hole; 2. Pin base; 21. Connecting seat; 210. Second oblong hole; 22. Limiting post; 220. Limiting hole; 221. Limiting cavity; 3. Positioning pin; 30. Spring; 31. Detection rod; 32. Limiting platform; 4. Sensor; 41. U-shaped sensing groove; 5. Connecting plate; 51. Third oblong hole; 6. Tooling base plate. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0014] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" used in this application to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this disclosure and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] Combination Figures 1 to 3 As shown, a positioning pin mechanism for a drilling and cutting fixture includes a positioning base 1, a pin base 2 on the upper part of the positioning base 1, a liftable positioning pin 3 on the top of the pin base 2, a sensor 4 on one side of the pin base 2, and a U-shaped sensing groove 41 on the upper part of the sensor 4. A detection rod 31 is provided on one side of the positioning pin 3. One end of the movement path of the detection rod 31 intersects with the detection area of ​​the sensor 4. The sensor 4 is electrically connected to the drilling and cutting control cabinet. The length direction of the detection rod 31 is perpendicular to the movement direction of the positioning pin 3. A U-shaped sensing groove 41 is set in the movement path of the detection rod 31. A connecting plate 5 is provided on one side of the sensor 4. The connecting plate 5 is connected between the sensor 4 and the pin base 2. The connecting plate 5 has a third oblong hole 51. The connecting plate 5 is fixed to the pin base 2 by bolts in the third oblong hole 51. The oblong length direction of the third oblong hole 51 is parallel to the movement direction of the positioning pin 3. The trigger sensitivity of the sensor 4 can be adjusted by fine-tuning the height of the connecting plate 5 and the sensor 4 through the third oblong hole 51.

[0016] The upper part of the pin base 2 is provided with a limiting post 22, and the limiting post 22 is provided with a limiting hole 220. The bottom of the limiting hole 220 is provided with a limiting cavity 221. The inner diameter of the limiting cavity 221 is larger than the inner diameter of the limiting hole 220. The positioning pin 3 is coaxially and slidably disposed in the limiting hole 220. The bottom end of the positioning pin 3 is provided with a limiting platform 32. The outer diameter of the limiting platform 32 is larger than the outer diameter of the positioning pin 3. The limiting platform 32 is slidably disposed in the limiting cavity 221. The bottom of the limiting hole 220 is provided with a spring 30. More specifically, the spring 30 is disposed at the bottom of the limiting cavity 221. The spring 30 is abutted between the positioning pin 3 and the positioning base 1.

[0017] The bottom of the pin base 2 is provided with a connecting seat 21. The positioning base 1 is provided with a limiting groove 11 at the corresponding position of the connecting seat 21. The connecting seat 21 is provided with a second oblong hole 210. The pin base 2 is fixed in the limiting groove 11 by bolts in the second oblong hole 210. The positioning base 1 is provided with a first oblong hole 110. The oblong length direction of the first oblong hole 110 is perpendicular to the oblong length direction of the second oblong hole 210. In use, the limiting post 22 and the positioning pin 3 can be adjusted in two horizontal directions through the first oblong hole 110 and the second oblong hole 210.

[0018] When using, combine Figures 1 to 4 As shown, the positioning pin mechanism is fixed in the tooling base plate 6. Figure 4 In this embodiment, two sets of positioning pin mechanisms are provided. Each set of positioning pin mechanisms is equipped with a corresponding sensor 4. When the workpiece to be drilled and cut is placed on the fixture base plate 6, the positioning pin aligns with the positioning hole on the workpiece. If the workpiece is misplaced, the positioning pin 3 will be pressed down, the spring 30 will be compressed, the detection rod 31 will move into the U-shaped sensing groove 41, triggering the sensor 4 to send a trigger signal. The trigger signal is sent to the drilling and cutting control cabinet to pause the subsequent drilling and cutting process. After adjusting the workpiece position until the workpiece is correctly positioned, the positioning pin 3 will automatically pop out, the trigger signal of the sensor 4 will disappear, and the subsequent process can continue.

[0019] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

[0020] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A positioning pin mechanism for a drilling and cutting fixture, comprising a positioning base (1), wherein a pin base (2) is provided on the upper part of the positioning base (1), characterized in that: The top of the pin base (2) is provided with a liftable positioning pin (3), a sensor (4) is provided on one side of the pin base (2), a detection rod (31) is provided on one side of the positioning pin (3), one end of the movement path of the detection rod (31) intersects with the detection area of ​​the sensor (4), and the sensor (4) is electrically connected to the drilling and cutting control cabinet.

2. The positioning pin mechanism for a drilling and cutting fixture according to claim 1, characterized in that: The sensor (4) is provided with a U-shaped sensing groove (41) on the upper part. The length direction of the detection rod (31) is perpendicular to the moving direction of the positioning pin (3). The U-shaped sensing groove (41) is set in the moving path of the detection rod (31).

3. The positioning pin mechanism for a drilling and cutting fixture according to claim 1, characterized in that: The upper part of the pin base (2) is provided with a limiting post (22), and the limiting post (22) is provided with a limiting hole (220). The positioning pin (3) is slidably disposed in the limiting hole (220) on the same axis. The bottom of the limiting hole (220) is provided with a spring (30), and the spring (30) is abutted between the positioning pin (3) and the positioning base (1).

4. The positioning pin mechanism for a drilling and cutting fixture according to claim 3, characterized in that: The bottom of the limiting hole (220) is provided with a limiting cavity (221), the inner diameter of the limiting cavity (221) is larger than the inner diameter of the limiting hole (220), the bottom end of the positioning pin (3) is provided with a limiting platform (32), the outer diameter of the limiting platform (32) is larger than the outer diameter of the positioning pin (3), the limiting platform (32) is slidably disposed in the limiting cavity (221), and the spring (30) is disposed at the bottom of the limiting cavity (221).

5. A positioning pin mechanism for a drilling and cutting fixture according to claim 1, characterized in that: The bottom of the pin base (2) is provided with a connecting seat (21). The positioning base (1) is provided with a limiting groove (11) at the position corresponding to the connecting seat (21). The connecting seat (21) is provided with a second waist-shaped hole (210). The pin base (2) is fixed in the limiting groove (11) by a bolt in the second waist-shaped hole (210). The positioning base (1) is provided with a first waist-shaped hole (110). The waist-shaped length direction of the first waist-shaped hole (110) is perpendicular to the waist-shaped length direction of the second waist-shaped hole (210).

6. The positioning pin mechanism for a drilling and cutting fixture according to claim 1, characterized in that: A connecting plate (5) is provided on one side of the sensor (4). The connecting plate (5) is connected between the sensor (4) and the pin base (2). A third waist-shaped hole (51) is provided in the connecting plate (5). The connecting plate (5) is fixed to the pin base (2) by a bolt in the third waist-shaped hole (51). The waist-shaped length direction of the third waist-shaped hole (51) is parallel to the moving direction of the positioning pin (3).

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