A pin processing positioning fixture

Abstract

The utility model relates to the field of pin processing, specifically a pin processing positioning fixture, comprising: a mounting seat; a positioning mechanism, wherein the positioning mechanism is arranged on the top of the mounting seat for realizing rapid positioning of the pin; wherein the positioning mechanism comprises a positioning cylinder rotatably connected to the top of the mounting seat, one end of the positioning cylinder is rotatably connected to a threaded rod, the surface of the threaded rod is threadedly connected to a ring, and the surface of the ring is hinged; the positioning mechanism is arranged, when the pin is fixed, the ring is driven to move by rotating the threaded rod, which is conducive to making the other ends of the three connecting rods drive the three sliders to move at the same time, and drive the three round rods to move toward the center point of the positioning cylinder at the same time, thereby pushing the three positioning plates to move toward the center point of the positioning cylinder at the same time to fix the pin. Therefore, when positioning the pin, it is only necessary to rotate the threaded rod, and when releasing the positioning, it is only necessary to rotate the threaded rod in the opposite direction, which is convenient to operate and saves time and effort.

Description

Technical Field

[0001] The utility model relates to the field of pin shaft processing, in particular to a pin shaft processing positioning fixture. Background Art

[0002] The pin is a common fastening component used to connect the hinge of two parts. When processing the pin, in order to maintain its stability, improve processing accuracy and safety, and increase production efficiency, it is necessary to use an appropriate fixture to fix the pin.

[0003] The Chinese patent "A positioning fixture for pin processing" authorization announcement number "CN215699964U" facilitates the connection screw to rotate by means of the arranged rotating wheel. With the cooperation of the threaded seat and the connection screw, it can drive the push rod at the end of the connection screw to squeeze the clamp plate. With the sliding cooperation of the slider and the slide groove, the clamp plate is driven to move to clamp and limit the end of the pin shaft. Moreover, the arranged reset spring can reset the clamp plate when the connection screw is not limited, thereby facilitating the removal of the pin shaft.

[0004] Although the pin shaft can be clamped and positioned, the staff needs to rotate the three wheels to drive the clamping plate to clamp the pin shaft. After the processing is completed, the staff needs to rotate the three wheels again to release the positioning, which is a cumbersome operation.

[0005] Therefore, a pin shaft processing positioning fixture is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a pin shaft processing positioning fixture in order to solve the above-mentioned problem, which improves the problem that the staff needs to rotate three rotating wheels to drive the clamping plate to clamp the pin shaft, and after the processing is completed, the staff needs to rotate the three rotating wheels again to release the positioning, which is a cumbersome operation.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme, a pin shaft processing positioning fixture, comprising: a mounting seat; a positioning mechanism, wherein the positioning mechanism is arranged at the top of the mounting seat for realizing rapid positioning of the pin shaft; wherein the positioning mechanism comprises a positioning cylinder rotatably connected to the top of the mounting seat, one end of the positioning cylinder is rotatably connected to a threaded rod, the surface of the threaded rod is threadedly connected to a circular ring, the surface of the circular ring is hinged with three connecting rods, and a positioning assembly is arranged inside the positioning cylinder.

[0008] Preferably, the positioning assembly includes three round rods slidably connected to the inner wall of the positioning cylinder, one end of the round rod passes through the positioning cylinder, the other end of the round rod passes through the interior of the positioning cylinder and is fixedly connected to a positioning plate, one end of the positioning cylinder is slidably connected to three sliders, the top of the slider is fixedly connected to a fixing rod, the other end of the fixing rod is fixedly connected to the surface of the corresponding round rod, and the other end of the connecting rod is hinged to one side of the corresponding slider. The positioning mechanism is set up so that when the pin is fixed, the circular ring is driven to move by rotating the threaded rod, which is conducive to the other ends of the three connecting rods driving the three sliders to move at the same time, and driving the three round rods to move toward the center point of the positioning cylinder at the same time, thereby pushing the three positioning plates to move toward the center point of the positioning cylinder at the same time to fix the pin. Therefore, when positioning the pin, it is only necessary to rotate the threaded rod, and when releasing the positioning, it is only necessary to rotate the threaded rod in the opposite direction, which is convenient to operate and saves time and effort.

[0009] Preferably, two cylinders are fixedly connected to the surface of the positioning cylinder, and the inner wall of the cylinder is slidably connected to a limiting rod, one end of which passes through the cylinder and the positioning cylinder to the inner side of the positioning cylinder in sequence, and one end of which is fixedly connected to a limiting plate. Under the action of the two limiting rods and the two limiting plates, it is beneficial to limit the position of the pin shaft when it enters the positioning cylinder, to avoid excessive deviation of the pin shaft from the center of the positioning cylinder when it enters the positioning cylinder, and to improve the stability of the positioning plate when clamping and positioning the pin shaft.

[0010] Preferably, the other end of the limit rod is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the cylinder. When the pin is released from squeezing the limit plate, the limit rod and the limit plate are restored to their initial state under the action of the spring.

[0011] Preferably, one end of the positioning cylinder is provided with three slide grooves, and the surface of the slider is slidably connected to the inner wall of the slide groove, which is conducive to limiting the movement of the slider and ensuring the stability when the three sliders pull the three round rods to move toward the center of the positioning cylinder.

[0012] Preferably, the middle of the positioning plate is concave in an arc shape, and the centers of the three positioning plates are the same, which is conducive to centering the pin and enhancing the stability of the pin during processing.

[0013] Preferably, the inner wall of the positioning plate is fixedly connected with a contact pad, and the contact pad is a rubber component, and the surface of the contact pad is provided with grooves distributed in equal rows, which is beneficial to increase the friction between the positioning plate and the pin surface, and enhance the stability of the positioning plate when fixing the pin.

[0014] Preferably, the lower end of the surface of the limit rod and one side of the limit plate are both inclined at the same angle, and the surface of the limit plate is curved in an arc shape. When the pin shaft enters the positioning cylinder, the limit rod and the limit plate ensure the stability of the pin shaft end pushing the limit rod to move.

[0015] The beneficial effects of the utility model are:

[0016] 1. The setting of the positioning mechanism, when fixing the pin shaft, the circular ring is driven to move by rotating the threaded rod, which is conducive to the other ends of the three connecting rods driving the three sliders to move at the same time, and driving the three circular rods to move toward the center point of the positioning cylinder at the same time, thereby pushing the three positioning plates to move toward the center point of the positioning cylinder at the same time to fix the pin shaft. Therefore, when positioning the pin shaft, it is only necessary to rotate the threaded rod, and when releasing the positioning, it is only necessary to rotate the threaded rod in the opposite direction, which is convenient to operate, saving time and effort;

[0017] 2. Under the action of two limit rods and two limit plates, it is helpful to limit the pin shaft when it enters the positioning cylinder, avoiding excessive deviation of the pin shaft from the center of the positioning cylinder when entering the positioning cylinder, and helping to improve the stability of the positioning plate when clamping and positioning the pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning mechanism structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the positioning component structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the positioning plate structure of the utility model;

[0022] Figure 5 It is a cross-sectional view of a cylinder of the present utility model.

[0023] In the figure: 1, mounting seat; 2, positioning mechanism; 201, positioning cylinder; 202, threaded rod; 203, ring; 204, connecting rod; 205, positioning assembly; 2051, round rod; 2052, positioning plate; 2053, fixing rod; 2054, slider; 2055, cylinder; 2056, limiting rod; 2057, limiting plate; 2058, spring; 2059, slide groove; 20510, contact pad; 20511, groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a pin processing positioning fixture includes: a mounting seat 1; a positioning mechanism 2, wherein the positioning mechanism 2 for realizing rapid positioning of the pin is arranged at the top of the mounting seat 1; wherein the positioning mechanism 2 includes a positioning cylinder 201 rotatably connected to the top of the mounting seat 1, wherein one end of the positioning cylinder 201 is rotatably connected to a threaded rod 202, wherein the surface of the threaded rod 202 is threadedly connected to a circular ring 203, wherein the surface of the circular ring 203 is hinged with three connecting rods 204, and a positioning assembly 205 is arranged inside the positioning cylinder 201.

[0026] A motor is installed inside the mounting seat 1, and the output shaft of the motor passes through the mounting seat 1 and is fixedly connected to the bottom end of the positioning cylinder 201. When the pin is being processed, the motor can be started to drive the positioning cylinder 201 to rotate, so that different angles of the pin can be processed.

[0027] When the pin needs to be fixed, the end of the pin is placed in the positioning tube 201 so that the end of the pin is pressed against the inner wall of the positioning tube 201. At this time, the threaded rod 202 is rotated to drive the ring 203 to move away from the end of the positioning tube 201, driving the positioning assembly 205 to clamp and fix the pin.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the positioning assembly 205 includes three round rods 2051 slidably connected to the inner wall of the positioning cylinder 201, one end of the round rod 2051 passes through the positioning cylinder 201, the other end of the round rod 2051 passes through the interior of the positioning cylinder 201 and is fixedly connected to a positioning plate 2052, one end of the positioning cylinder 201 is slidably connected to three sliders 2054, the top of the slider 2054 is fixedly connected to a fixing rod 2053, the other end of the fixing rod 2053 is fixedly connected to the surface of the corresponding round rod 2051, and the other end of the connecting rod 204 is hinged to one side of the corresponding slider 2054. One end of the positioning cylinder 201 is provided with three slide grooves 2059, and the surface of the slider 2054 is slidably connected to the inner wall of the slide groove 2059. The middle part of the positioning plate 2052 is concave in an arc shape, and the center of the three positioning plates 2052 is the same.

[0029] The three positioning plates 2052, the three sliders 2054 and the connecting rod 204 are all distributed in a circular array. In the initial state of the device, the connecting rod 204 is in a vertical state. When the circular ring 203 moves, it will drive one end of the connecting rod 204 to move synchronously, and the connecting rod 204 will gradually tilt. At this time, the other ends of the three connecting rods 204 will simultaneously pull the three sliders 2054 to move toward the center point of the positioning cylinder 201 and approach each other. When the three sliders 2054 approach each other, they will pull the three circular rods 2051 to move toward the inner side of the positioning cylinder 201 at the same time through the fixing rod 2053, and push the three positioning plates 2052 to move at the same time and fix the pin shaft. When the circular ring 203 can no longer move, the fixing operation of the pin shaft is completed, and the operation is convenient.

[0030] like Figure 2 and Figure 5 As shown, two cylinders 2055 are fixedly connected to the surface of the positioning cylinder 201, and the inner wall of the cylinder 2055 is slidably connected to the limiting rod 2056. One end of the limiting rod 2056 passes through the cylinder 2055 and the positioning cylinder 201 to the inner side of the positioning cylinder 201 in sequence, and one end of the limiting rod 2056 is fixedly connected to the limiting plate 2057. The other end of the limiting rod 2056 is fixedly connected to the spring 2058, and the other end of the spring 2058 is fixedly connected to the inner wall of the cylinder 2055. The lower end of the surface of the limiting rod 2056 and one side of the limiting plate 2057 are both inclined, and the inclination angle is the same, and the surface of the limiting plate 2057 is curved in an arc shape.

[0031] The two limit rods 2056 are symmetrical about the center of the positioning cylinder 201. When the end of the pin shaft is placed in the positioning cylinder 201, the end of the pin shaft contacts the surface of the limit rod 2056, and under the action of the inclined surface of the limit rod 2056, the pin shaft will push the limit rod 2056 to move into the cylinder 2055 as it continues to move, and compress the spring 2058. When the end of the pin shaft is released from the limit plate 2057, the other side of the limit plate 2057 contacts the surface of the pin shaft. At this time, the pin shaft is located between the two limit plates 2057.

[0032] like Figure 3 and Figure 4 As shown, the inner wall of the positioning plate 2052 is fixedly connected with a contact pad 20510, and the contact pad 20510 is a rubber component, and the surface of the contact pad 20510 is provided with grooves 20511 distributed in equal rows. When the positioning plate 2052 fixes the pin shaft, the surface of the contact pad 20510 will contact the surface of the pin shaft, the edge of the contact pad 20510 is curved in an arc shape, and the groove 20511 is a half spherical groove.

[0033] When the three sliders 2054 are close to each other, the three round rods 2051 will be pulled toward the inner side of the positioning cylinder 201 through the fixing rod 2053, and the three positioning plates 2052 will be pushed to move at the same time and fix the pin shaft tightly, which is convenient for operation.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pin processing and positioning fixture, characterized in that: include: Mounting seat (1); A positioning mechanism (2) for realizing rapid positioning of the pin shaft, wherein the positioning mechanism (2) is arranged at the top end of the mounting seat (1); The positioning mechanism (2) comprises a positioning cylinder (201) rotatably connected to the top of the mounting seat (1); one end of the positioning cylinder (201) is rotatably connected to a threaded rod (202); a surface of the threaded rod (202) is threadedly connected to a ring (203); a surface of the ring (203) is hinged with three connecting rods (204); and a positioning assembly (205) is arranged inside the positioning cylinder (201).

2. A pin processing and positioning fixture according to claim 1, characterized in that: The positioning assembly (205) comprises three round rods (2051) slidably connected to the inner wall of the positioning cylinder (201); one end of the round rod (2051) passes through the positioning cylinder (201); the other end of the round rod (2051) passes through the interior of the positioning cylinder (201) and is fixedly connected to a positioning plate (2052); one end of the positioning cylinder (201) is slidably connected to three sliders (2054); the top end of the slider (2054) is fixedly connected to a fixing rod (2053); the other end of the fixing rod (2053) is fixedly connected to the surface of the corresponding round rod (2051); and the other end of the connecting rod (204) is hinged to one side of the corresponding slider (2054).

3. The pin processing and positioning fixture according to claim 1, characterized in that: Two cylinders (2055) are fixedly connected to the surface of the positioning cylinder (201); the inner wall of the cylinder (2055) is slidably connected to a limiting rod (2056); one end of the limiting rod (2056) passes through the cylinder (2055) and the positioning cylinder (201) in sequence to the inner side of the positioning cylinder (201); and one end of the limiting rod (2056) is fixedly connected to a limiting plate (2057).

4. A pin processing and positioning fixture according to claim 3, characterized in that: The other end of the limiting rod (2056) is fixedly connected to a spring (2058), and the other end of the spring (2058) is fixedly connected to the inner wall of the cylinder (2055).

5. The pin processing and positioning fixture according to claim 2, characterized in that: One end of the positioning cylinder (201) is provided with three slide grooves (2059), and the surface of the sliding block (2054) is slidably connected to the inner wall of the slide groove (2059).

6. A pin processing and positioning fixture according to claim 2, characterized in that: The middle part of the positioning plate (2052) is concave in an arc shape, and the centers of the three positioning plates (2052) are the same.

7. A pin processing and positioning fixture according to claim 2, characterized in that: A contact pad (20510) is fixedly connected to the inner wall of the positioning plate (2052), and the contact pad (20510) is a rubber component. The surface of the contact pad (20510) is provided with grooves (20511) distributed in equal rows.

8. The pin processing and positioning fixture according to claim 3, characterized in that: The lower end of the surface of the limiting rod (2056) and one side of the limiting plate (2057) are both inclined, and the inclination angles are the same, and the surface of the limiting plate (2057) is curved in an arc shape.

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