Nut press fitting jig

Abstract

The utility model discloses a nut press-fitting jig which comprises a press-fitting base, a pressing rod and a driving piece, and the press-fitting base is provided with a positioning groove and a limiting interval. The positioning grooves and the limiting intervals are distributed in the length direction of the press-fitting base at intervals. The pressing rod is arranged corresponding to the positioning groove and can move close to or away from the positioning groove; and the driving piece is used for ejecting and pressing the pressing rod after moving downwards, so that the pressing rod moves close to the positioning groove. According to the nut press-fitting jig, different positions of the workpiece in the length direction can be positioned and limited through the positioning grooves and the limiting intervals in the press-fitting base, and then press-fitting is achieved by pressing the pressing rod through the driving piece.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a nut press-fitting fixture. Background Technology

[0002] With the development of hard disk storage technology, as a core component of computer consumer electronics products, its application in human production and life is becoming increasingly widespread and popular. Among them, the read / write head arm is a key component of the hard disk, and its performance directly affects the performance of the hard disk.

[0003] The magnetic head arm is usually assembled with nuts, and the nuts are pressed in without a jig, which requires long-term manual alignment. This not only involves high manual labor intensity, but also easily leads to a large number of defective products. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a nut pressing fixture, which can position and limit different positions in the length direction of the workpiece through the positioning groove and limiting interval on the pressing base, and then use the driving component to press the pressing rod to achieve pressing.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A nut pressing fixture includes a pressing base, a pressing rod, and a driving component. The pressing base is provided with a positioning groove and a limiting interval. The positioning groove and the limiting interval are distributed at intervals along the length direction of the pressing base. The pressing rod is provided corresponding to the positioning groove and can move closer to or away from the positioning groove. The driving component is used to press the pressing rod after moving downward, so that the pressing rod moves closer to the positioning groove.

[0007] Furthermore, the pressing base is provided with a limiting pin assembly, which includes two limiting pins. The two limiting pins are spaced apart on the pressing base and form the limiting interval.

[0008] Furthermore, the top of the limiting pin is a guiding arc.

[0009] Furthermore, the bottom end of the pressure rod is provided with a clearance groove.

[0010] Furthermore, the top wall of the clearance groove is provided with a downwardly extending positioning post.

[0011] Furthermore, the outer surface of the top end of the pressure rod is provided with a spherical surface.

[0012] Furthermore, the driving member is provided with a push rod, and the bottom end of the push rod is provided with a pressing plane; the pressing plane is used to press the top end of the pressure rod; the driving member is used to drive the push rod to move up and down.

[0013] Furthermore, the positioning base includes a positioning plate and a positioning boss. The positioning boss is located at the end of the positioning plate, and the positioning boss has a positioning groove that extends along the height direction of the positioning boss. The side of the positioning groove has a notch, and the notch corresponds to the limiting interval.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Place the workpiece on the press-fit base. The arm body can be placed in a limiting interval to prevent lateral wobbling during press-fitting. The head of the arm for nut assembly can be placed in a positioning groove. Insert the nut into the hole of the arm, and then align the push rod with the nut position on the arm. The drive component moves downward to press the push rod, thus pressing the nut into the arm. This reduces damage to the nut and arm due to human error and improves the assembly yield.

[0016] 2. Because the limiting intervals and positioning grooves are distributed at intervals along the length of the positioning base, the limiting intervals and positioning grooves can limit and position the magnetic head arm at different positions, preventing the magnetic head arm and nut from shifting during the pressing process, thus resulting in higher pressing accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the nut pressing fixture of this utility model;

[0018] Figure 2 This is a schematic diagram of the press-fit base, press rod, and workpiece assembly structure of this utility model;

[0019] Figure 3 This is an exploded view of the press-fit base, press rod, and workpiece of this utility model;

[0020] Figure 4 This is a schematic diagram of the press-fit base of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of this utility model.

[0022] In the diagram: 10. Press-fit base; 11. Positioning plate; 12. Positioning platform; 13. Limit pin; 131. Guide arc; 14. Positioning groove; 20. Pressure rod; 21. Spherical surface; 22. Clearance groove; 23. Positioning post; 30. Driving component; 31. Push rod; 40. Workpiece. Detailed Implementation

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] like Figures 1-5 The nut pressing fixture shown includes a pressing base 10, a pressing rod 20, and a driving member 30. The pressing base 10 has a positioning groove 14 and a limiting interval, with the positioning groove 14 and the limiting interval distributed at intervals along the length of the pressing base 10. The pressing rod 20 is positioned corresponding to the positioning groove 14 and can move closer to or away from the positioning groove 14. The driving member 30 is used to press the pressing rod 20 after downward movement, causing the pressing rod 20 to move closer to the positioning groove 14.

[0027] Based on the above structure, this embodiment will use the pressing of the nut and the magnetic head arm as an example when using the nut pressing fixture of this utility model:

[0028] That is, the magnetic head arm is used as the workpiece 40. The workpiece 40 is placed on the pressing base 10. The arm body of the magnetic head arm can be placed in the limiting interval for limiting, which prevents the arm body of the magnetic head arm from wobbling left and right during the pressing process. The head of the magnetic head arm used for nut assembly can be placed in the positioning groove 14. The nut is placed into the hole of the magnetic head arm, and then the push rod 31 is aligned with the nut position of the magnetic head arm. The driving component 30 moves downward to press the pressure rod 20. The pressure rod 20 can then press the nut into the magnetic head arm, reducing damage to the nut and magnetic head arm caused by human error and improving the assembly yield.

[0029] It should be noted that, since the limiting interval and the positioning groove 14 are distributed at intervals along the length of the positioning base, the limiting interval and the positioning groove 14 can limit and position the magnetic head arm at different positions, preventing the magnetic head arm and the nut from shifting during the pressing process, thus achieving higher pressing accuracy.

[0030] Specifically, in this embodiment, the pressable base 10 is provided with a limiting pin 13 assembly, which includes two limiting pins 13. The two limiting pins 13 are spaced apart on the pressable base 10 and form a limiting interval.

[0031] Of course, the limiting pin 13 can be a pin structure as in the prior art, which can be directly assembled to the positioning base with a pin structure, making assembly and disassembly convenient. In addition, multiple sets of limiting pin 13 assemblies can be arranged in the length direction of the positioning base. The interval between two limiting pins 13 of the limiting pin 13 assembly at different positions in the length direction of the positioning base can be set according to the width of the workpiece 40 at different positions, thus adapting to limiting the different widths of the workpiece 40 at different positions.

[0032] In addition, the positioning base can also be a protruding block or a protruding post, with the protruding blocks or protruding posts spaced apart to form a limiting interval.

[0033] Furthermore, the top of the limiting pin 13 is a guide arc 131, which can guide the workpiece 40 to be placed in, reducing the scratches caused by the sharp corner structure of the limiting pin 13 during the placement or removal of the workpiece 40.

[0034] Furthermore, a clearance groove 22 can be provided at the bottom end of the pressure rod 20. Since the nut will not be completely pressed into the hole of the magnetic head arm during assembly, a clearance groove 22 can be provided at the bottom end of the pressure rod 20 to avoid the part of the nut protruding from the magnetic head arm. When the pressure rod 20 is pressed down, the part of the nut protruding from the magnetic head arm can be inserted into the clearance groove 22 to avoid the part of the nut protruding.

[0035] Furthermore, the top wall of the aforementioned clearance groove 22 is provided with a downwardly extending positioning post 23. The positioning post 23 can pass through the threaded hole of the nut when the pressure rod 20 is pressed down, so as to position the nut and prevent displacement during the pressing process.

[0036] Furthermore, the top outer surface of the pressure rod 20 is provided with a spherical surface 21, so that the top of the pressure rod 20 is hemispherical. During the pressing process, the spherical surface 21 can be guided when it contacts the power end of the driving member 30, which can guide the contact point, reduce the deviation of the pressing force, and improve the pressing accuracy.

[0037] Specifically, the driving member 30 is provided with a push rod 31, and the bottom end of the push rod 31 is provided with a pressing plane; the pressing plane is used to press the top end of the pressing rod 20; the driving member 30 is used to drive the push rod 31 to move up and down. The driving member 30 can be a driving cylinder in the prior art, so the piston rod of the driving cylinder can be formed as the push rod 31. Alternatively, the driving member 30 can also be a threaded transmission component, so the push rod 31 is a screw.

[0038] In this embodiment, the driving component 30 can be a rotating component, which can be a cam structure. The camshaft is driven to rotate by a handle or motor, and the protruding part of the camshaft can press down on the push rod 31 during rotation, thereby driving the push rod 31 to press against the pressure rod 20 to achieve press fitting. The structure is simple.

[0039] Furthermore, the aforementioned positioning base includes a positioning plate 11 and a positioning boss. The positioning boss is located at the end of the positioning plate 11, and a positioning groove 14 extends along the height direction of the positioning boss. A notch is provided on the side of the positioning groove 14, and the notch corresponds to the limiting interval. When clamping the workpiece 40, the arm of the magnetic head arm can pass through the limiting interval, and the end of the magnetic head arm with the threaded hole can extend into the positioning groove 14 through the notch. The positioning groove 14 is located on the positioning boss, and the limiting interval is located on the positioning plate 11, so that there is a certain height difference between the positioning groove 14 and the limiting interval, which is adapted to the height difference of different positions of the workpiece 40, and the structure is more stable after clamping.

[0040] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A nut press-fitting jig characterized by comprising: The utility model provides a press-fit base, press bar and driving part, the press-fit base is equipped with positioning recess and spacing interval, positioning recess and spacing interval are distributed in the length direction interval of press-fit base, press bar is correspondingly positioned recess is equipped with, and can move close to or far from positioning recess, driving part is used for top pressure press bar after moving downward, to make press bar move close to positioning recess.

2. The nut press-fitting jig according to claim 1, wherein The press-fit base is equipped with a limiting pin assembly, the limiting pin assembly includes two limiting pins, the two limiting pins are spaced apart on the press-fit base and form the limiting interval.

3. The nut press-fitting jig according to claim 2, wherein The top end of the limiting pin is a guide arc.

4. The nut press-fitting jig according to claim 1, wherein The bottom end of the press bar is provided with an avoidance recess.

5. The nut press-fitting jig according to claim 4, wherein The top wall of the avoidance recess is provided with a downward extending positioning column.

6. The nut press-fitting jig according to any one of claims 1 to 5, characterized by The top end outer surface of the press bar is provided with a spherical surface.

7. The nut press-fitting jig according to claim 6, wherein The driving part is provided with a top rod, the bottom end of the top rod is provided with a top pressure plane; the top pressure plane is used for top pressure press bar top end; the driving part is used for driving top rod up and down movement.

8. The nut press-fitting jig according to any one of claims 1 to 5, characterized by The positioning base includes a positioning plate and a positioning boss, the positioning boss is provided on the end of the positioning plate, a positioning recess is provided on the positioning boss, the positioning recess extends along the height direction of the positioning boss, a notch is provided on the side of the positioning recess, and the notch corresponds to the limiting interval.

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