Cylindrical pin press-in jig

Abstract

The utility model discloses a cylindrical pin press-in jig, which relates to the technical field of product assembly, and comprises a bottom plate and a vertical frame, the upper side of the bottom plate is fixedly connected with a positioning and locking mechanism, the middle part of one side of the vertical frame is fixedly connected with an impact mechanism, the positioning and locking mechanism comprises a first base and a second base, the product is placed close to the inner side of the second base and close to the positioning pin, the first base is stressed to move and approach to the second base, the product is clamped, in the process that the first base approaches to the second base, parameters of the two springs are consistent, the deformation quantities of the two springs are the same after the two springs are extruded, and the product clamping precision is improved. The center hole guide sleeve is always kept at the midpoint position between the first base and the second base, the cylindrical pin does not need to be manually supported, the risk of hand hitting is avoided, meanwhile, it can be guaranteed that the cylindrical pin is accurately positioned, meanwhile, the first base and the second base are matched, the device is suitable for products of the same kind and different sizes within a certain range, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of product assembly, in particular to a cylindrical pin press-in fixture. Background Art

[0002] Pinning is a common industrial operation used to fasten and join mechanical parts. This operation is used extensively in various manufacturing and assembly processes.

[0003] However, in the prior art, during the assembly process, two products need to be fixed together using cylindrical pins to achieve the desired action. Since the cylindrical pins are small, it is difficult to manually hammer them in, and there is a large error in manual hammering, which poses a risk of hitting hands and is inefficient. Utility Model Content

[0004] In view of this, the utility model provides a cylindrical pin press-in fixture which can accurately align and impact and has a wide range of product applications.

[0005] To this end, the present application provides the following technical solutions: a cylindrical pin pressing fixture comprises a base plate and a stand, the upper side of the base plate is fixedly connected with a positioning locking mechanism, the middle part of one side of the stand is fixedly connected with an impact mechanism, the positioning locking mechanism comprises a first base and a second base, one end of the first base is internally threaded with a threaded rod, the upper side of the second base is fixedly connected with a support frame, a center hole guide sleeve is provided on the inner side of the support frame, two groups of long axes and two groups of short axes are fixedly connected on the outer side of the center hole guide sleeve, the two groups of long axes and the two groups of short axes are distributed at intervals, a runway groove is provided inside the support frame, the short axis is clamped on the inner wall of the runway groove, one of the long axes is slidably connected to the inside of the support frame, and the other long axis is slidably connected to the first base, the outer sides of the two groups of long axes are both sleeved with springs, and the upper side of the first base and the upper side of the second base are both fixedly connected with positioning pins.

[0006] Preferably, one end of the threaded rod is fixedly connected to a handle, the other end of the first base is internally slidably connected to a cross bar, and the second base and the cross bar are fixedly mounted on the upper side of the base plate.

[0007] Preferably, both ends of the threaded rod are rotatably connected to the upper side of the base plate, and the stand is fixedly connected to the upper side of the base plate by bolts.

[0008] Preferably, a mounting plate is fixedly connected to one side of the stand, and a vertical rod is fixedly connected to the other side of the mounting plate.

[0009] Preferably, a sliding block is slidably connected to the outer surface of the vertical rod, and an adjusting block is fixedly connected to the other side of the sliding block.

[0010] Preferably, the upper side of the sliding block is rotatably connected to a side arm, and the other end of the side arm is rotatably connected to a pressure rod.

[0011] Preferably, one end of the pressure rod is rotatably connected to the inside of the stand, and a cylindrical pin punch is fixedly clamped in the groove of the adjustment block.

[0012] The beneficial effects of the utility model are:

[0013] 1. In the utility model, by placing one side of the product close to the inner side of the second base and close to the positioning pin, the first base is forced to move closer to the second base to clamp the product. In the process of the first base approaching the second base, one of the long axes slides inside the first base, the compression spring is deformed to generate elastic force, and the other long axis slides inside the support frame, and the other spring is also compressed. The two springs have the same parameters. After being squeezed, the two springs have the same deformation amount, so that the center hole guide sleeve always maintains the midpoint position between the first base and the second base. There is no need to manually support the cylindrical pin, which avoids the risk of hitting hands. At the same time, it can ensure the precise positioning of the cylindrical pin. At the same time, the cooperation of the first base and the second base is suitable for products of the same type but different sizes within a certain range, thereby improving the scope of application of the device.

[0014] 2. In the utility model, after the cylindrical pin is placed in the guide sleeve of the center hole, the pressure rod is pressed downward, and the pressure rod moves in an arc and presses down the side arm, thereby pushing the slider to move downward along the vertical rod, and then driving the adjustment block vertically downward, so that the cylindrical pin punch vertically downward impacts the cylindrical pin into the product to be assembled, and the side arm is rotatably connected to the lower end part of the pressure rod. In the process of pressing the pressure rod downward, the power arm is much larger than the resistance arm, ensuring that the impact force of the cylindrical pin punch is sufficient to impact the cylindrical pin into the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a cylindrical pin press-fitting fixture;

[0017] Figure 2 The utility model provides a three-dimensional structural schematic diagram of a cylindrical pin pressed into an impact mechanism in a fixture;

[0018] Figure 3The utility model provides a three-dimensional structural schematic diagram of a cylindrical pin pressed into a positioning and locking mechanism in a fixture;

[0019] Figure 4 The utility model provides a side view of a cylindrical pin pressed into a positioning and locking mechanism in a fixture.

[0020] In the figure: 1. base plate; 2. positioning locking mechanism; 21. handle; 22. threaded rod; 23. first base; 24. spring; 25. long axis; 26. center hole guide sleeve; 27. runway groove; 28. support frame; 29. ​​second base; 210. cross bar; 211. short axis; 212. positioning pin; 3. stand; 4. impact mechanism; 41. pressure rod; 42. side arm; 43. mounting plate; 44. slide block; 45. vertical rod; 46. cylindrical pin punch; 47. adjustment block. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Example 1

[0025] like Figure 1 , Figure 3 and Figure 4As shown, the cylindrical pin press-fitting fixture includes a base plate 1 and a stand 3. A positioning locking mechanism 2 is fixedly connected to the upper side of the base plate 1. An impact mechanism 4 is fixedly connected to the middle of one side of the stand 3. The positioning locking mechanism 2 includes a first base 23 and a second base 29. A threaded rod 22 is internally threadedly connected to one end of the first base 23. A support frame 28 is fixedly connected to the upper side of the second base 29. A center hole guide sleeve 26 is provided on the inner side of the support frame 28. Two groups of long shafts 25 and two groups of short shafts 211 are fixedly connected to the outer side of the center hole guide sleeve 26. The two groups of long shafts 25 and the two groups of short shafts 211 are spaced apart. A runway groove 27 is provided inside the support frame 28. The short axis 211 is clamped on the inner wall of the runway groove 27, one of the long axes 25 is slidably connected to the inside of the support frame 28, and the other long axis 25 is slidably connected to the first base 23. The outer sides of the two sets of long axes 25 are sleeved with springs 24, and the upper sides of the first base 23 and the second base 29 are fixedly connected with positioning pins 212. One end of the threaded rod 22 is fixedly connected to the handle 21, and the other end of the first base 23 is internally slidably connected with a cross bar 210. The second base 29 and the cross bar 210 are fixedly installed on the upper side of the base plate 1, and the two ends of the threaded rod 22 are rotatably connected to the upper side of the base plate 1. The frame 3 is fixedly connected to the upper side of the base plate 1 by bolts.

[0026] In this embodiment, the second base 29 is installed on the bottom plate 1. The size of the second base 29 corresponds to the product to meet the needs of serialized products. By placing one side of the product close to the inner side of the second base 29 and close to the positioning pin 212, the handle 21 is rotated, and the handle 21 is rotated at one end of the first base 23. The component force of the meshing force generated by the rotation is applied to the first base 23, so that it moves along the cross bar 210 toward the second base 29, thereby the first base 23 and the second base 29 clamp the product. In the process of the first base 23 approaching the second base 29, one of the long axes 25 slides inside the first base 23, and the compression spring 24 is deformed to generate elastic force, which pushes the center hole guide sleeve 26, so that the short shafts 211 on both sides slide in the runway groove 27, and the other long shaft 25 slides inside the support frame 28, and the other spring 24 is also compressed, and the two springs 24 have the same parameters. After being squeezed, the two springs 24 have the same deformation, so that the center hole guide sleeve 26 always maintains the midpoint position between the first base 23 and the second base 29, and there is no need to manually support the cylindrical pin, avoiding the risk of hitting the hand, and at the same time, it can ensure the precise positioning of the cylindrical pin. The cooperation of the first base 23 and the second base 29 is suitable for products of the same type but different sizes within a certain range, thereby improving the scope of application of the device. Finally, under the action of the impact mechanism 4, the cylindrical pin is impacted into the product to be assembled.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, a mounting plate 43 is fixedly connected to one side of the vertical frame 3, a vertical rod 45 is fixedly connected to the other side of the mounting plate 43, a slider 44 is slidably connected to the outer surface of the vertical rod 45, an adjusting block 47 is fixedly connected to the other side of the slider 44, a side arm 42 is rotatably connected to the upper side of the slider 44, a pressure rod 41 is rotatably connected to the other end of the side arm 42, one end of the pressure rod 41 is rotatably connected to the inside of the vertical frame 3, and a cylindrical pin punch 46 is fixedly clamped in the groove of the adjusting block 47.

[0029] In this embodiment, after the cylindrical pin is placed in the center hole guide sleeve 26, the pressure rod 41 is pressed downward, and the pressure rod 41 moves in an arc and presses down the side arm 42, thereby pushing the slider 44 to move downward along the vertical rod 45, and then driving the adjustment block 47 vertically downward, so that the cylindrical pin punch 46 vertically downward impacts the cylindrical pin into the product to be assembled. When impacting different products, the position of the cylindrical pin punch 46 in the groove of the adjustment block 47 is adjusted, and the upper and lower nuts are locked for use with different products. The side arm 42 is rotatably connected to the lower end part of the pressure rod 41. In the process of pressing the pressure rod 41 downward, the power arm is much larger than the resistance arm, ensuring that the impact force of the cylindrical pin punch 46 is sufficient to impact the cylindrical pin.

[0030] The use method and working principle of the device are as follows: when using the cylindrical pin to press the fixture, one side of the product is placed close to the inner side of the second base 29 and close to the positioning pin 212, and the handle 21 is turned. The handle 21 is rotated at one end of the first base 23, and the component force of the meshing force generated by the rotation is applied to the first base 23, so that it moves along the cross bar 210 toward the second base 29, thereby the first base 23 and the second base 29 clamp the product. In the process of the first base 23 approaching the second base 29, one of the long shafts 25 slides inside the first base 23, and the compression spring 24 is deformed to generate elastic force, which pushes the center hole guide sleeve 26, so that the short shafts 211 on both sides are in the runway groove 27. Slide, and the other long axis 25 slides inside the support frame 28, and the other spring 24 is also compressed, and the parameters of the two springs 24 are consistent. After being squeezed, the deformation of the two springs 24 is the same, so that the center hole guide sleeve 26 always maintains the midpoint position between the first base 23 and the second base 29. Within a certain range, it is suitable for products of different sizes. Then, the cylindrical pin is placed in the center hole guide sleeve 26, and then the pressure rod 41 is pressed downward. The pressure rod 41 moves in an arc and presses down the side arm 42, thereby pushing the slider 44 to move downward along the vertical rod 45, and then driving the adjusting block 47 vertically downward, so that the cylindrical pin punch 46 vertically downward impacts the cylindrical pin into the product to be assembled.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A cylindrical pin press-fitting jig, comprising a base plate (1) and a stand (3), characterized in that: The upper side of the base plate (1) is fixedly connected with a positioning locking mechanism (2), and the middle part of one side of the stand (3) is fixedly connected with an impact mechanism (4). The positioning locking mechanism (2) comprises a first base (23) and a second base (29). One end of the first base (23) is internally threadedly connected with a threaded rod (22). The upper side of the second base (29) is fixedly connected with a support frame (28). A center hole guide sleeve (26) is provided on the inner side of the support frame (28). Two groups of long shafts (25) and two groups of short shafts (211) are respectively fixedly connected to the outer side of the center hole guide sleeve (26). ), two groups of the long axes (25) and two groups of the short axes (211) are spaced apart, a runway groove (27) is provided inside the support frame (28), the short axes (211) are clamped on the inner wall of the runway groove (27), one of the long axes (25) is slidably connected to the inside of the support frame (28), and the other long axis (25) is slidably connected to the first base (23), the outer sides of the two groups of the long axes (25) are sleeved with springs (24), and the upper sides of the first base (23) and the second base (29) are fixedly connected with positioning pins (212).

2. The cylindrical pin press-in fixture according to claim 1, characterized in that: One end of the threaded rod (22) is fixedly connected to a handle (21), the other end of the first base (23) is internally slidably connected to a cross bar (210), and the second base (29) and the cross bar (210) are fixedly mounted on the upper side of the base plate (1).

3. The cylindrical pin press-in fixture according to claim 2, characterized in that: The two ends of the threaded rod (22) are rotatably connected to the upper side of the base plate (1), and the stand (3) is fixedly connected to the upper side of the base plate (1) by bolts.

4. The cylindrical pin press-in jig according to claim 3, characterized in that: A mounting plate (43) is fixedly connected to one side of the stand (3), and a vertical rod (45) is fixedly connected to the other side of the mounting plate (43).

5. The cylindrical pin press-in jig according to claim 4, characterized in that: The outer surface of the vertical rod (45) is slidably connected to a sliding block (44), and the other side of the sliding block (44) is fixedly connected to an adjusting block (47).

6. The cylindrical pin press-in jig according to claim 5, characterized in that: The upper side of the sliding block (44) is rotatably connected to a side arm (42), and the other end of the side arm (42) is rotatably connected to a pressure rod (41).

7. The cylindrical pin press-in jig according to claim 6, characterized in that: One end of the pressure rod (41) is rotatably connected to the interior of the stand (3), and a cylindrical pin punch (46) is fixedly clamped in the groove of the adjustment block (47).

Images