Multifunctional snap ring press-fitting equipment for assembling precision parts

Abstract

The utility model discloses a multifunctional snap ring press-fitting device for precise part assembly, which relates to the technical field of mechanical automatic assembly and comprises a pressing structure, a snap ring collecting structure, a press-fitting snap ring structure and a measuring snap ring structure. According to the utility model, the functions of clamping ring compression, ring collection, press fitting and measurement are integrated, the four functional modules guide each other and are combined into a complete device, and the size of the device is reduced to 50% compared with that of the original cooperative use of a plurality of devices; meanwhile, the production and purchase cost of three sets of devices is reduced, and the comprehensive cost is reduced by 45%; when the snap ring is assembled, the single operation cycle time is shortened from 25 seconds to 8 seconds, and the productivity is improved by 210%; and the press-fitting measurement is completed at one time, switching and repeated positioning are not needed, and the positioning error is reduced by 50%.

Description

Technical Field

[0001] This utility model relates to the field of mechanical automation assembly technology, specifically a multi-functional snap ring press-fitting device for assembling precision parts. Background Technology

[0002] In the field of precision machinery manufacturing, the assembly of retaining rings (such as elastic retaining rings and snap rings) is one of the key processes, and its installation quality directly affects the fitting accuracy and service life of the parts. Traditional retaining ring press-fitting mainly relies on manual labor or simple tools, but existing retaining ring press-fitting devices have the following shortcomings: 1. Multiple separate equipment: Traditional processes require separate clamping devices, ring-collecting devices, press-fitting devices, and measuring devices, resulting in large equipment footprints, cumbersome processes, and time-consuming process connections; 2. Poor precision control: Manual or semi-automatic press-fitting and measurement rely on experience for adjustment, which can easily lead to retaining ring deformation or improper installation due to uneven pressure, resulting in a low yield rate; moreover, manual operation can easily cause retaining ring misalignment or deformation, making it difficult to meet high-precision assembly requirements; 3. Low efficiency: Manual press-fitting requires repeated adjustments, especially for small-sized or high-hardness retaining rings, which is time-consuming and can easily damage parts; 4. High cost: The purchase and maintenance costs of multiple pieces of equipment are high, which does not meet the development needs of enterprises to reduce costs and increase efficiency; 5. Lack of real-time detection: Additional tools are required to measure the retaining ring installation status after assembly, making it impossible to achieve closed-loop process control. Utility Model Content

[0003] The purpose of this invention is to provide a multifunctional snap ring press-fitting device for assembling precision parts, so as to solve the problems of dispersed, inefficient and poor precision of traditional process equipment mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional snap ring press-fitting device for assembling precision parts, comprising a coaxially arranged pressing structure, a snap ring closing structure, a press-fit snap ring structure, and a measuring snap ring structure; the pressing structure includes a pressing sleeve, a pressing connecting shaft, and a pressing connecting plate coaxially connected in sequence from bottom to top; the snap ring closing structure includes a closing positioning sleeve, a closing connecting ring, multiple closing support plates, and a closing connecting sleeve, which are connected to the press-fit snap ring structure and the measuring snap ring structure through the closing connecting sleeve; the press-fit snap ring structure includes two press-fit cylinders, a press-fit connecting plate, multiple press-fit support rods, a press-fit connecting ring, and a press-fit sleeve; the measuring snap ring structure includes two measuring cylinders, a measuring top plate, multiple measuring support rods, a measuring bottom plate, and a measuring sleeve.

[0005] Preferably, the clamping sleeve includes an annular clamping connecting sleeve with a plurality of downwardly protruding clamping sleeves evenly arranged at its bottom edge and a conical clamping connecting sleeve at its top end, the top end of the conical clamping connecting sleeve being connected to the clamping connecting shaft; the clamping connecting plate is connected to a servo press; and a clamping limit pin is provided at the center of the bottom surface of the clamping sleeve.

[0006] Preferably, four first guide shafts are evenly arranged around the pressing connecting shaft on the bottom surface of the pressing connecting plate, and a first guide sleeve is provided on each first guide shaft. The four first guide sleeves are connected and fixed together with the retaining ring closing structure, and a stop is provided at the bottom end of the first guide shaft.

[0007] Preferably, the retaining ring positioning sleeve is annular and placed outside the pressing connecting sleeve and coaxially arranged. A retaining ring connecting ring extending radially towards the shaft center is provided at the top edge of the retaining ring positioning sleeve. Multiple vertical retaining ring support plates are evenly distributed in a ring on the top surface of the retaining ring connecting ring near its inner ring. A retaining ring connecting sleeve is provided on the inner side of the top of the multiple retaining ring support plates. A through hole is provided at the shaft center of the retaining ring connecting sleeve and it is sleeved on the outside of the pressing connecting shaft. A linear bearing is provided between the retaining ring connecting sleeve and the pressing connecting shaft. The retaining ring connecting sleeve is fixedly connected to four first guide sleeves. Four cylinder mounting plates extending radially outward are evenly distributed in a ring on the outer wall of the retaining ring connecting sleeve. Measuring retaining ring structures are provided on the cylinder mounting plates facing each other on the left and right sides, and pressing retaining ring structures are provided on the cylinder mounting plates facing each other on the front and rear sides. A radially concave retaining ring groove is provided at the bottom end of the outer wall of the retaining ring positioning sleeve. The retaining ring positioning sleeve is an H-precision positioning sleeve.

[0008] Preferably, two press-fit cylinders are vertically mounted downwards on the top surfaces of two cylinder mounting plates facing each other. The piston rods of the two press-fit cylinders pass unobstructed through the corresponding cylinder mounting plates and are connected to press-fit connecting plates below them via self-aligning connectors. Multiple press-fit support rods are evenly distributed in a ring on the bottom surface of the press-fit connecting plates. The bottom ends of the multiple press-fit support rods are connected to a horizontal press-fit connecting ring placed between the pressing connecting sleeve and the retaining ring positioning sleeve. At the same time, an oil-free bushing is provided on the outer wall of the press-fit support rod, and the oil-free bushing is fixedly connected to the measuring retaining ring structure. Multiple vertically downward press-fit sleeves are evenly distributed in a ring on the outer side of the press-fit connecting ring.

[0009] Preferably, a press-fit limiting block is provided on the top surface of the receiving ring connecting ring.

[0010] Preferably, two measuring cylinders are vertically mounted on the bottom surfaces of two cylinder mounting plates facing each other. The piston rods of the two measuring cylinders pass unobstructed through the corresponding cylinder mounting plates and are connected to a measuring top plate above them via self-aligning connectors. Multiple measuring support rods are evenly distributed in a ring on the bottom surface of the measuring top plate. The multiple measuring support rods pass through the closing ring connecting sleeve and are provided with a second guide sleeve between them. The bottom ends of the multiple measuring support rods are provided with a measuring bottom plate. The outer edge of the measuring bottom plate is connected to a measuring sleeve on the same circumference as the press-fit sleeve between the closing ring support plates via a vertical connecting rod.

[0011] Preferably, an inverted L-shaped press-fit switch bracket is provided on the bottom surface of a cylinder mounting plate on which a press-fit cylinder is installed, and two proximity switches are arranged side by side on the vertical plate of the press-fit switch bracket; an L-shaped detection switch bracket is provided on the top surface of a cylinder mounting plate on which a measuring cylinder is installed, and two proximity switches are arranged side by side on the vertical plate of the detection switch bracket.

[0012] Preferably, a measuring sensor is vertically installed on the outer wall of the retractable connecting sleeve, and a measuring probe is installed at the bottom end of the measuring sensor.

[0013] Preferably, multiple limiting screws are evenly distributed in a ring on the same circumference of the measuring top plate, and a coaxial stop screw is provided on the top surface of the retaining ring positioning sleeve below the limiting screws.

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

[0015] 1. This utility model integrates the functions of clamping, ring closing, pressing and measuring into one unit. The four functional modules guide each other and are combined into a complete device. The size of the equipment is reduced by 50% compared to the original use of multiple devices. At the same time, the production and procurement costs of three sets of devices are reduced, and the overall cost is reduced by 45%.

[0016] 2. This utility model reduces the single operation cycle time during ring assembly from 25 seconds to 8 seconds, increasing production capacity by 210%; and the press-fit measurement is completed in one go, without the need to switch and repeat positioning, reducing positioning error by 50%. Attached Figure Description

[0017] Figure 1 This is an isometric drawing of the present invention;

[0018] Figure 2 Main view;

[0019] Figure 3 for Figure 1 Sectional view of AA;

[0020] Figure 4 for Figure 1 Enlarged view of B in the middle;

[0021] Figure 5 Right view;

[0022] Figure 6 for Figure 5 Sectional view of CC;

[0023] Figure 7 This is a top view;

[0024] In the diagram: Clamping structure-1, Clamping connecting sleeve-11, Clamping pressure sleeve-12, Conical clamping connecting sleeve-13, Clamping connecting shaft-14, Clamping connecting plate-15, Clamping limiting pin-16, First guide shaft-17, First guide sleeve-18, Stop block-19, Snap ring retraction structure-2, Retraction positioning sleeve-21, Retraction connecting ring-22, Retraction support plate-23, Retraction connecting sleeve-24, Cylinder mounting plate-25, Retraction groove-26, Press-fit limiting block-27, Press-fit snap ring structure-3, Press-fit cylinder- 31. Self-aligning connector - 32. Press-fit connecting plate - 33. Press-fit support rod - 34. Press-fit connecting ring - 35. Oil-free bushing - 36. Press-fit sleeve - 37. Press-fit switch bracket - 38. Proximity switch - 39. Measuring retaining ring structure - 4. Measuring cylinder - 41. Measuring top plate - 42. Measuring support rod - 43. Second guide sleeve - 44. Measuring bottom plate - 45. Measuring sleeve - 46. Detection switch bracket - 47. Measuring sensor - 48. Measuring probe - 49. Limit screw - 50. Stop screw - 51. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please refer to Figure 1-7 , Figure 1 This is an isometric drawing of the present invention; Figure 2 Main view; Figure 3 for Figure 1 Sectional view of AA; Figure 4 for Figure 1 Enlarged view of B in the middle; Figure 5 Right view; Figure 6 for Figure 5 Sectional view of CC; Figure 7 This is a top view.

[0027] This utility model provides a multifunctional snap ring press-fitting device for assembling precision parts, which simultaneously possesses snap ring clamping, snap ring retraction, snap ring press-fitting, and snap ring measurement functions, and achieves positioning compatibility through mutual guidance; including a clamping structure 1 for clamping the workpiece with a specified pressure during snap ring installation and ensuring that the snap ring groove is fully exposed and not obstructed by the workpiece; a snap ring retraction structure 2 for retracting the snap ring to be installed; a press-fit snap ring structure 3 for pressing the retracted snap ring into the snap ring groove; and a measuring snap ring structure 4 for checking whether the installed snap ring is qualified.

[0028] The clamping structure 1 includes an annular clamping connecting sleeve 11. Multiple downwardly protruding clamping sleeves 12 are evenly arranged at the bottom edge of the clamping connecting sleeve 11, and a conical clamping connecting sleeve 13 is arranged at the top. A clamping connecting shaft 14, coaxial with the clamping connecting sleeve 11, is vertically arranged at the top of the conical clamping connecting sleeve 13. A clamping connecting plate 15 is arranged at the top of the clamping connecting shaft 14. The clamping connecting plate 15 is connected to a servo press, which clamps the workpiece with a specified pressure, ensuring that the retaining ring groove is fully exposed and not obstructed by the workpiece. Furthermore, the servo press has a built-in displacement sensor and pressure sensor, allowing real-time monitoring of the displacement and pressure of the clamping sleeve 12. Additionally, a clamping limit pin 16 is arranged at the center of the bottom surface of the clamping sleeve 12.

[0029] Four first guide shafts 17 are evenly arranged around the pressing connecting shaft 14 on the bottom surface of the pressing connecting plate 15. Each first guide shaft 17 is provided with a first guide sleeve 18. The four first guide sleeves 18 are connected and fixed together with the snap ring retraction structure 2. At the same time, a stop block 19 is provided at the bottom end of the first guide shaft 17.

[0030] The retaining ring retraction structure 2 includes an annular retraction positioning sleeve 21 coaxially disposed on the outside of the clamping connecting sleeve 11, used to retract the retaining ring to facilitate its smooth entry into the housing. A retraction connecting ring 22 extending radially towards the shaft center is disposed at the top edge of the retraction positioning sleeve 21. Multiple vertical retraction support plates 23 are evenly distributed in a ring on the top surface of the retraction connecting ring 22 near its inner ring. A retraction connecting sleeve 24 is disposed on the inner side of the top of the multiple retraction support plates 23. A through hole is disposed at the shaft center of the retraction connecting sleeve 24, which is fitted onto the clamping connecting shaft 14. On the outer side, a linear bearing is provided between the retractable connecting sleeve 24 and the pressing connecting shaft 14 for guiding the sliding of the retaining ring retractable structure 2; the retractable connecting sleeve 24 is also fixedly connected to four first guide sleeves 18, and while guiding the movement, it is also limited by the stop block 19; four cylinder mounting plates 25 extending radially outward are evenly distributed in a ring on the outer side wall of the retractable connecting sleeve 24, wherein the cylinder mounting plates 25 facing each other on the left and right sides are provided with measuring retaining ring structures 4, and the cylinder mounting plates 25 facing each other on the front and rear sides are provided with pressing retaining ring structures 3.

[0031] Furthermore, a radially concave retaining groove 26 is provided at the bottom end of the outer side wall of the retaining ring positioning sleeve 21 to limit the relative height between the retaining ring and the housing. Simultaneously, the retaining ring positioning sleeve 21 is an H7 precision positioning sleeve, capable of accurately positioning and retaining the retaining ring.

[0032] The press-fit clasp structure 3 includes two press-fit cylinders 31, which are vertically mounted downwards on the top surfaces of two cylinder mounting plates 25 facing each other. The piston rods of the two press-fit cylinders 31 pass unobstructed through the corresponding cylinder mounting plates 25 and are connected to press-fit connecting plates 33 below via self-aligning connectors 32. Multiple press-fit support rods 34 are evenly distributed in a ring on the bottom surface of the press-fit connecting plate 33. The bottom ends of the multiple press-fit support rods 34 are connected to a horizontal press-fit connecting ring 35 placed between the pressing connecting sleeve 11 and the ring positioning sleeve 21. At the same time, an oil-free bushing 36 is provided on the outer wall of the press-fit support rod 34, and the oil-free bushing 36 is fixedly connected to the measuring clasp structure 4. Multiple vertically downward press-fit sleeves 37 are evenly distributed in a ring on the outer side of the press-fit connecting ring 35, so that the clasp is pressed into the clasp groove of the housing by the two press-fit cylinders 31 during use.

[0033] In addition, an inverted L-shaped press-fit switch bracket 38 is provided on the bottom surface of a cylinder mounting plate 25 on which the press-fit cylinder 31 is installed, and two proximity switches 39 are arranged side by side on the vertical plate of the press-fit switch bracket 38. The two proximity switches 39 are used to monitor the displacement of the press-fit connecting plate 33.

[0034] A press-fit limiting block 27 is also provided on the top surface of the retaining ring 22 to limit the vertical displacement of the press-fit connecting plate 33 and prevent the retaining ring from being over-pressed.

[0035] The measuring ring structure 4 includes two measuring cylinders 41, which are vertically mounted on the bottom surfaces of two cylinder mounting plates 25 facing each other. The piston rods of the two measuring cylinders pass unobstructed through the corresponding cylinder mounting plates 25 and are connected to a measuring top plate 42 above them via self-aligning connectors 32. Multiple measuring support rods 43 are evenly distributed in a ring on the bottom surface of the measuring top plate 42. The multiple measuring support rods 43 pass through the closing ring connecting sleeve 24 and are positioned between the closing ring connecting sleeve 24 and the closing ring connecting sleeve 24. There is a second guide sleeve 44; the bottom ends of multiple measuring support rods 43 are jointly provided with a measuring base plate 45, and the outer side of the measuring base plate 45 is connected to a measuring sleeve 46 on the same circumference as the press-fit sleeve 37 through a vertical connecting rod between the ring support plate 23; an L-shaped detection switch bracket 47 is provided on the top surface of a cylinder mounting plate 25 on which a measuring cylinder 41 is installed, and two proximity switches 39 are arranged side by side on the vertical plate of the detection switch bracket 47, which are used to monitor the displacement of the measuring top plate 42.

[0036] In addition, a measuring sensor 48 is vertically installed on the outer side wall of the retaining ring connecting sleeve 24, and a measuring probe 49 is installed at the bottom end of the measuring sensor 48. The pressing state of the retaining ring is confirmed by measuring the relative height of the retaining ring.

[0037] Multiple limiting screws 50 are evenly distributed in a ring on the same circumference of the measuring top plate 42 to limit the movement of the measuring top plate 42. Below the limiting screws 50, a coaxial stop screw 51 is provided on the top surface of the retaining ring positioning sleeve 21 to provide a counterforce to the limiting screws 50.

[0038] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. A multi-functional snap ring press fitting device for precision component assembly, characterized in that: The device includes a coaxially arranged clamping structure (1), a retaining ring retraction structure (2), a press-fit retaining ring structure (3), and a measuring retaining ring structure (4). The clamping structure (1) includes a clamping sleeve, a clamping connecting shaft (14), and a clamping connecting plate (15) that are coaxially connected as a whole from bottom to top. The retaining ring retraction structure (2) includes a retraction positioning sleeve (21), a retraction connecting ring (22), multiple retraction support plates (23), and a retraction connecting sleeve (24), which are connected to the press-fit retaining ring structure (3) and the measuring retaining ring structure (4) through the retraction connecting sleeve (24). The press-fit retaining ring structure (3) includes two press-fit cylinders (31), a press-fit connecting plate (33), multiple press-fit support rods (34), a press-fit connecting ring (35), and a press-fit sleeve (37). The measuring retaining ring structure (4) includes two measuring cylinders (41), a measuring top plate (42), multiple measuring support rods (43), a measuring bottom plate (45), and a measuring sleeve (46).

2. The multifunctional circlip press equipment for precision component assembly according to claim 1, characterized in that: The clamping sleeve includes an annular clamping connecting sleeve (11) with a plurality of downwardly protruding clamping sleeves (12) evenly arranged at its bottom edge and a conical clamping connecting sleeve (13) at its top. The top of the conical clamping connecting sleeve (13) is connected to the clamping connecting shaft (14). The clamping connecting plate (15) is connected to a servo press. A clamping limit pin (16) is provided at the center of the bottom surface of the clamping sleeve (12).

3. The multi-functional circlip press equipment for precision parts assembly according to claim 2, characterized in that: Four first guide shafts (17) are evenly arranged around the pressing connecting shaft (14) on the bottom surface of the pressing connecting plate (15). Each first guide shaft (17) is provided with a first guide sleeve (18). The four first guide sleeves (18) are connected and fixed together with the snap ring closing structure (2). A stop block (19) is provided at the bottom end of the first guide shaft (17).

4. The multifunctional circlip press equipment for precision component assembly according to claim 3, characterized in that: The ring-shaped positioning sleeve (21) is circular and is placed on the outside of the clamping connecting sleeve (11) and coaxially arranged. A ring-shaped connecting ring (22) extending radially towards the axis is provided at the top edge of the ring-shaped positioning sleeve (21). Multiple vertical ring-shaped support plates (23) are evenly distributed in a ring on the top surface of the ring-shaped connecting ring (22) near its inner ring. A ring-shaped connecting sleeve (24) is provided on the inner side of the top of the multiple ring-shaped support plates (23). A through hole is provided at the axis of the ring-shaped connecting sleeve (24) and it is sleeved on the outside of the clamping connecting shaft (14). At the same time, the ring-shaped connecting sleeve (24) and the clamping connecting shaft (14) are connected. A linear bearing is provided between the shafts (14); the ring-shaped connecting sleeve (24) is fixedly connected to four first guide sleeves (18); four cylinder mounting plates (25) extending radially outward are evenly distributed on the outer side wall of the ring-shaped connecting sleeve (24), wherein the cylinder mounting plates (25) facing each other on the left and right sides are provided with measuring retaining ring structures (4), and the cylinder mounting plates (25) facing each other on the front and rear sides are provided with press-fit retaining ring structures (3); a radially concave ring-shaped groove (26) is provided at the bottom end of the outer side wall of the ring-shaped positioning sleeve (21); the ring-shaped positioning sleeve (21) is a precision positioning sleeve of H (7).

5. The multi-functional circlip press equipment for precision parts assembly according to claim 4, characterized in that: Two press-fit cylinders (31) are vertically mounted on the top surfaces of two cylinder mounting plates (25) facing each other. The piston rods of the two press-fit cylinders (31) pass through the corresponding cylinder mounting plates (25) without obstruction and are connected to press-fit connecting plates (33) below by self-aligning connectors (32). Multiple press-fit support rods (34) are evenly distributed in a ring on the bottom surface of the press-fit connecting plate (33). The bottom ends of the multiple press-fit support rods (34) are connected to a horizontal press-fit connecting ring (35) placed between the pressing connecting sleeve (11) and the closing ring positioning sleeve (21). At the same time, an oil-free bushing (36) is provided on the outer wall of the press-fit support rod (34). The oil-free bushing (36) is fixed to the measuring retaining ring structure (4). Multiple vertically downward press-fit sleeves (37) are evenly distributed in a ring on the outer side of the press-fit connecting ring (35).

6. The multi-functional clasp press fitting device for precision component assembly according to claim 5, characterized in that: A press-fit limiting block (27) is provided on the top surface of the retractable connecting ring (22).

7. The multi-functional clasp press fitting apparatus for precision component assembly according to claim 6, characterized in that: Two measuring cylinders (41) are vertically mounted on the bottom surfaces of two cylinder mounting plates (25) facing each other. The piston rods of the two measuring cylinders pass through the corresponding cylinder mounting plates (25) without obstruction and are connected to the measuring top plate (42) above them by self-aligning connectors (32). Multiple measuring support rods (43) are evenly distributed in a ring on the bottom surface of the measuring top plate (42). The multiple measuring support rods (43) pass through the closing ring connecting sleeve (24) and a second guide sleeve (44) is provided between them. The bottom ends of the multiple measuring support rods (43) are provided with a measuring base plate (45). The outer side of the measuring base plate (45) is connected to the measuring sleeve (46) on the same circumference as the press-fitting sleeve (37) between the closing ring support plates (23) by a vertical connecting rod.

8. The multi-functional clasp press fitting apparatus for precision component assembly of claim 7, wherein: An inverted L-shaped press-fit switch bracket (38) is provided on the bottom surface of a cylinder mounting plate (25) on which a press-fit cylinder (31) is installed, and two proximity switches (39) are arranged side by side on the vertical plate of the press-fit switch bracket (38); an L-shaped detection switch bracket (47) is provided on the top surface of a cylinder mounting plate (25) on which a measuring cylinder (41) is installed, and two proximity switches (39) are arranged side by side on the vertical plate of the detection switch bracket (47).

9. The multi-functional snap ring press assembly device for precision parts assembly according to any one of claims 1-8, characterized in that: A measuring sensor (48) is vertically installed on the outer side wall of the retractable connecting sleeve (24), and a measuring probe (49) is installed at the bottom end of the measuring sensor (48).

10. The multi-functional clasp press fitting apparatus for precision component assembly of claim 9, wherein: Multiple limiting screws (50) are evenly distributed in a ring on the same circumference of the measuring top plate (42), and a coaxial stop screw (51) is provided on the top surface of the retaining ring positioning sleeve (21) below the limiting screws (50).

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