Fixing tool for small bearing

Abstract

The utility model relates to the field of bearing machining, in particular to a small bearing fixing tool which comprises a lower die, a positioning shaft, an upper die and an upper punch, the positioning shaft is connected to the lower die, the upper die is slidably connected with the positioning shaft, the positioning shaft is used for sleeving a bearing, the upper punch is connected to the end, facing the lower die, of the upper die, and the positioning shaft is slidably connected with the upper die. The upper punches are used for punching the assembling base, the number of the upper punches is multiple, and the multiple upper punches are evenly arranged around the axis of the positioning shaft at intervals. The positioning shaft positions the bearing, the upper die and the lower die are assembled to fix the bearing, the upper die slides to be close to the lower die, meanwhile, the punch conducts one-time pit punching forming on the assembly base, the machining efficiency is improved, the consistency of punched pits is good, the attractiveness of the bearing is improved, and the product quality is improved.

Description

Technical Field

[0001] This application relates to the field of bearing processing, and in particular to a fixture for fixing small bearings. Background Technology

[0002] Bearings are key components in machinery used to reduce the coefficient of friction, minimize wear, and improve efficiency and motion accuracy. One type of aerospace bearing requires coaxial fixation to the mounting port of a mounting base. The fixation method involves placing the bearing into the mounting port and then using a 0.8mm diameter ball end to evenly punch six points along the circumference of the mounting base at a distance of 0.5–0.8mm from the bearing on both the upper and lower surfaces. The depth of the indentations is 0.3–0.5mm, ensuring that the force required to dislodge the bearing from the mounting base after fixation meets standard requirements.

[0003] However, punching one spot at a time with a punch, finishing one side before moving on to the other, results in low processing efficiency. Because the punching causes the material to flow and expand, subsequent punchings are affected by the previous ones, leading to poor consistency in the depth of the holes and low processing quality. Utility Model Content

[0004] To improve processing efficiency, this application provides a fixture for fixing small bearings.

[0005] The fixing fixture for a small bearing provided in this application adopts the following technical solution:

[0006] A fixture for fixing a small bearing includes a lower die, a positioning shaft, an upper die, and an upper punch. The positioning shaft is connected to the lower die, and the upper die is slidably connected to the positioning shaft. The positioning shaft is used for mounting the bearing. The upper punch is connected to the end of the upper die facing the lower die and is used for punching holes in the mounting base. Multiple upper punches are provided and are evenly spaced around the axis of the positioning shaft.

[0007] By adopting the above technical solution, the positioning shaft positions the bearing, and the upper and lower dies are used to fix the bearing. As the upper die slides closer to the lower die, the punch punches a groove in the assembly seat, which improves processing efficiency, and the punched grooves are consistent, improving the bearing's appearance and product quality.

[0008] Preferably, it also includes a lower punch, which is connected to the end of the lower die facing the upper die. The lower punch is used to punch holes in the mounting base. Multiple lower punches are provided, and the lower punches are arranged in a one-to-one correspondence with the upper punches.

[0009] By adopting the above technical solution, the upper punch punches a dent on one side of the assembly seat while the lower punch punches a dent on the other side of the assembly seat, completing the punching of both sides of the assembly seat in one go. There is no need to punch one side and then punch the other side, which improves processing efficiency. In addition, the bearing is prone to displacement during the flipping process, which affects the processing quality. Punching the dents on both sides at once improves the aesthetics of the bearing.

[0010] Preferably, the upper punch is detachably connected to the upper die.

[0011] By adopting the above technical solution, when a single upper punch is damaged, it is easy to replace the damaged upper punch individually, thus extending the service life of the tooling.

[0012] Preferably, the upper mold has an installation port at the end facing the lower mold, and a disassembly port at the end facing away from the lower mold. The disassembly port is connected to the installation port, and the upper punch is fixedly embedded in the installation port.

[0013] By adopting the above technical solution, the upper punch and the upper die are fixed, and the stability and firmness of the upper punch are good.

[0014] Preferably, the mounting port and the disassembly port are coaxially arranged.

[0015] By adopting the above technical solution, it is easier to disassemble the upper punch and improve the efficiency of disassembly and assembly of the upper punch.

[0016] Preferably, the diameter of the mounting port is larger than the diameter of the disassembly port.

[0017] By adopting the above technical solution, the upper punch is subjected to a reaction force when punching the dent, and the diameter of the mounting opening is larger than that of the disassembly opening, so that the upper die can resist the upper punch and improve the stability of the tooling.

[0018] Preferably, the upper mold includes a top seat and a top mold. The top seat has a mounting groove at one end facing the lower mold. The top mold is fixedly embedded in the mounting groove. The top mold has an installation port. The top seat has a disassembly port. The top mold is slidably connected to the positioning shaft.

[0019] By adopting the above technical solution, it is easier to process the installation port and the disassembly port separately, thereby improving processing efficiency.

[0020] Preferably, the upper mold has a positioning port at one end facing the lower mold, the positioning port penetrates the upper mold, and the positioning shaft is slidably connected to the inner wall of the positioning port.

[0021] By adopting the above technical solution, the positioning port guides the sliding of the positioning shaft, and the positioning shaft guides the sliding of the upper die, so that the upper punch can punch holes stably, thereby improving processing efficiency and processing quality.

[0022] Preferably, the lower mold has a sliding opening at one end facing the upper mold, the sliding opening penetrates the lower mold, and the positioning shaft is slidably connected to the inner wall of the sliding opening.

[0023] By adopting the above technical solution, the lower mold and the upper mold are brought closer to each other, enabling synchronous processing of both sides of the assembly base, thereby improving processing efficiency and processing quality.

[0024] Preferably, the end of the upper punch facing the lower die is spherical.

[0025] By adopting the above technical solution, the spherical surface facilitates the upper punch to punch the mounting base. The upper punch is integrally formed and does not need to be connected to the ball head, which facilitates punching.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The positioning shaft positions the bearing, and the upper and lower dies are closed to fix the bearing. As the upper die slides closer to the lower die, the punch punches a groove in the assembly seat in one go, which improves processing efficiency and the uniformity of the punched grooves, improves the appearance of the bearing and improves product quality.

[0028] 2. While the upper punch punches a dent on one side of the assembly base, the lower punch punches a dent on the other side of the assembly base, completing the punching of both sides of the assembly base in one go. This eliminates the need to punch one side and then the other, improving processing efficiency. In addition, bearings are prone to displacement during the flipping process, which affects processing quality. Punching both sides at once improves the aesthetics of the bearing.

[0029] 3. The lower and upper molds are close to each other to achieve synchronous processing of both sides of the assembly base, thereby improving processing efficiency and quality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a fixture for fixing a small bearing.

[0031] Figure 2 This is a cross-sectional view of a fixture for fixing a small bearing.

[0032] Explanation of reference numerals in the attached drawings: 1. Lower mold; 11. Base; 111. Placement slot; 112. Through port; 113. Replacement port; 12. Bottom mold; 121. Movable slot; 122. Sliding port; 123. Placement port; 2. Upper mold; 21. Top seat; 211. Mounting slot; 212. Through port; 213. Disassembly port; 22. Top mold; 221. Clearance slot; 222. Positioning port; 223. Mounting port; 3. Positioning shaft; 4. Lower punch; 41. Fixing port; 5. Lower screw; 6. Upper punch; 61. Connection port; 7. Upper screw. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-2This application will be described in further detail.

[0034] This application discloses a fixture for fixing a small bearing. (Refer to...) Figure 1 and Figure 2 A fixture for fixing a small bearing includes a lower die 1, an upper die 2, a positioning shaft 3, a lower punch 4, a lower screw 5, an upper punch 6, and an upper screw 7.

[0035] Reference Figure 2 The lower mold 1 and the upper mold 2 are both slidably connected to the positioning shaft 3. The sliding direction of the lower mold 1 and the upper mold 2 is parallel to the axial direction of the positioning shaft 3. The positioning shaft 3 is used for bearing sleeves. The bearings are located between the lower mold 1 and the upper mold 2. The positioning shaft 3 is fixed, and the upper mold 2 and the lower mold 1 are respectively connected to the sliders of two hydraulic presses. The stroke of the hydraulic press is controlled so that the upper mold 2 and the lower mold 1 move closer or further away from each other.

[0036] The lower mold 1 includes a base 11 and a bottom mold 12. The end of the base 11 facing the upper mold 2 has a coaxial placement groove 111. The bottom mold 12 is coaxially fixedly embedded in the placement groove 111, with an interference fit between the bottom mold 12 and the groove wall of the placement groove 111. The outer wall of the bottom mold 12 is in contact with the groove wall of the placement groove 111. The end of the bottom mold 12 away from the bottom of the placement groove 111 has a coaxial movable groove 121 for placing bearings. The bottom of the movable groove 121 has a coaxial sliding opening 122 that penetrates the bottom mold 12. The bottom of the placement groove 111 has a coaxial through-hole 112 that penetrates the base 11. The diameter of the through-hole 112 is larger than the diameter of the sliding opening 122. A positioning shaft 3 is slidably connected to the inner wall of the sliding opening 122.

[0037] Reference Figure 2 The bottom mold 12 is provided with placement openings 123, the axis of which is parallel to the axis of the sliding opening 122. The placement openings 123 penetrate the bottom mold 12, and there are six placement openings 123. These six placement openings 123 are evenly spaced around the axis of the sliding opening 122, and are all located on the outer periphery of the sliding opening 122. The bottom of the placement groove 111 is provided with replacement openings 113, which penetrate the base 11. There are six replacement openings 113, which are coaxially arranged in one-to-one correspondence with the placement openings 123. The replacement openings 113 are connected to the placement openings 123, and their diameter is smaller than that of the placement openings 123.

[0038] The lower punch 4 is embedded in the placement opening 123. There are six lower punches 4, and each lower punch 4 is arranged in a one-to-one correspondence with the placement opening 123. The end of the lower punch 4 facing the upper die 2 is spherical, and the spherical surface extends out of the placement opening 123. The lower punch 4 is detachably connected to the lower die 1. The lower punch 4 is used to punch holes in the mounting base.

[0039] In this embodiment, the lower punch 4 is coaxially provided with a fixing port 41 at one end facing the bottom of the placement slot 111. The lower screw 5 passes through the replacement port 113 and is threaded to the inner wall of the fixing port 41. The replacement port 113 is a countersunk port. When the lower screw 5 is installed, the end face of the lower screw 5 away from the lower punch 4 is flush with the end face of the base 11 away from the upper mold 2.

[0040] In other embodiments, the lower punch 4 is fixed by an interference fit with the inner wall of the placement port 123.

[0041] Reference Figure 2 The upper mold 2 includes a top seat 21 and a top mold 22. The top seat 21 has a coaxial mounting groove 211 at one end facing the lower mold 1. The top mold 22 is fixedly embedded in the mounting groove 211, and its outer wall fits against the groove wall of the mounting groove 211. The top mold 22 has a coaxial clearance groove 221 at one end away from the bottom of the mounting groove 211. A positioning opening 222 is coaxially provided at the bottom of the clearance groove 221, penetrating the top mold 22. A through opening 212 is coaxially provided at the bottom of the mounting groove 211, penetrating the top seat 21. The diameter of the through opening 212 is larger than the diameter of the positioning opening 222. A positioning shaft 3 is slidably connected to the inner wall of the positioning opening 222.

[0042] The top mold 22 is provided with mounting openings 223, the axis of which is parallel to the axis of the positioning opening 222. The mounting openings 223 penetrate the top mold 22, and there are six mounting openings 223. The six mounting openings 223 are evenly spaced around the axis of the positioning opening 222, and all six mounting openings 223 are located on the outer periphery of the positioning opening 222. The bottom of the mounting groove 211 is provided with disassembly openings 213, which penetrate the top seat 21. There are six disassembly openings 213, which are coaxially arranged in one-to-one correspondence with the mounting openings 223. The disassembly openings 213 are connected to the mounting openings 223, and the diameter of the disassembly openings 213 is smaller than the diameter of the mounting openings 223.

[0043] Reference Figure 2 The upper punch 6 is slidably embedded in the mounting opening 223. There are six upper punches 6, each corresponding to a mounting opening 223. The end of the upper punch 6 facing the lower die 1 is spherical, and the spherical surface extends out of the mounting opening 223. The upper punch 6 is detachably connected to the upper die 2. The upper punch 6 is used to punch holes in the mounting base.

[0044] In this embodiment, the upper punch 6 has a coaxial connection port 61 at one end facing the bottom of the mounting groove 211. The upper screw 7 passes through the disassembly port 213 and is threaded to the inner wall of the connection port 61. The disassembly port 213 is a countersunk opening. When the upper screw 7 is installed, the end face of the upper screw 7 away from the upper punch 6 is flush with the end face of the top seat 21 away from the lower die 1.

[0045] In other embodiments, the upper punch 6 is fixed by an interference fit with the inner wall of the mounting port 223.

[0046] The implementation principle of a small bearing fixing fixture in this application embodiment is as follows: the upper mold 2 slides away from the lower mold 1, and the bearing is sleeved on the outer periphery of the positioning shaft 3. The upper mold 2 and the lower mold 1 are controlled to move closer to each other to punch a hole in the assembly seat, thereby improving processing efficiency.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixture for fixing a small bearing, characterized in that: It includes a lower die (1), a positioning shaft (3), an upper die (2), and an upper punch (6). The positioning shaft (3) is connected to the lower die (1), and the upper die (2) is slidably connected to the positioning shaft (3). The positioning shaft (3) is used for mounting the bearing. The upper punch (6) is connected to the end of the upper die (2) facing the lower die (1). The upper punch (6) is used for punching holes in the mounting base. There are multiple upper punches (6), and the multiple upper punches (6) are evenly spaced around the axis of the positioning shaft (3).

2. The fixture for fixing a small bearing according to claim 1, characterized in that: It also includes a lower punch (4), which is connected to the end of the lower die (1) facing the upper die (2). The lower punch (4) is used to punch holes in the mounting base. There are multiple lower punches (4), and the lower punches (4) and the upper punches (6) are arranged in a one-to-one correspondence.

3. The fixture for fixing a small bearing according to claim 1, characterized in that: The upper punch (6) is detachably connected to the upper die (2).

4. The fixture for fixing a small bearing according to claim 3, characterized in that: The upper mold (2) has an installation port (223) at one end facing the lower mold (1), and a disassembly port (213) at the other end facing away from the lower mold (1). The disassembly port (213) is connected to the installation port (223), and the upper punch (6) is fixedly embedded in the installation port (223).

5. The fixture for fixing a small bearing according to claim 4, characterized in that: The mounting port (223) and the disassembly port (213) are coaxially arranged.

6. The fixture for fixing a small bearing according to claim 4, characterized in that: The diameter of the mounting port (223) is larger than the diameter of the disassembly port (213).

7. The fixture for fixing a small bearing according to claim 4, characterized in that: The upper mold (2) includes a top seat (21) and a top mold (22). The top seat (21) has an installation groove (211) at one end facing the lower mold (1). The top mold (22) is fixedly embedded in the installation groove (211). The top mold (22) has an installation port (223). The top seat (21) has a disassembly port (213). The top mold (22) is slidably connected to the positioning shaft (3).

8. The fixture for fixing a small bearing according to claim 1, characterized in that: The upper mold (2) has a positioning port (222) at one end facing the lower mold (1). The positioning port (222) passes through the upper mold (2), and the positioning shaft (3) is slidably connected to the inner wall of the positioning port (222).

9. The fixture for fixing a small bearing according to claim 1, characterized in that: The lower mold (1) has a sliding opening (122) at one end facing the upper mold (2), the sliding opening (122) passes through the lower mold (1), and the positioning shaft (3) is slidably connected to the inner wall of the sliding opening (122).

10. The fixture for fixing a small bearing according to claim 1, characterized in that: The end of the upper punch (6) facing the lower die (1) is spherical.

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