Pull rod adjusting device of bearing ring press forging tool
By designing the adjustment joint mechanism and fastening mechanism in the forging tooling of the bearing ring press, the corrosion and blockage of the tie rod adjustment device is solved, and flexible adjustment of the tie rod length is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202422726580.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-08
AI Technical Summary
The pull rod adjustment device of the existing bearing ring press forging tooling is prone to rust or blockage under the action of high-temperature oxide scale and cooling water, resulting in difficulty in adjusting the pull rod and scrapping in severe cases, affecting production efficiency and increasing costs.
A tie rod adjustment device including an adjustment joint mechanism and a fastening mechanism is designed. By setting the internal threaded hole of the adjustment joint mechanism downward, it avoids corrosion and blockage of the oxide scale and cooling water, and realizes flexible adjustment of the tie rod length.
It effectively prevents rust and blockage caused by the scale and cooling water, improves production efficiency, and reduces the frequency and cost of mold replacement.
Smart Images
Figure CN223288924U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing production, in particular to a pull rod adjusting device for a bearing ring press forging tooling. Background Art
[0002] Rolling bearings are a crucial component in the machinery industry, found in all rotating machine parts. In bearing forging, reverse extrusion, a process commonly used in extrusion molding, is the most common method. This method is particularly effective when the central portion of the bearing steel exhibits defects such as segregation and porosity, indicating inferior quality. Reverse extrusion can significantly deform the metal in this area, effectively altering the quality of the steel and achieving uniformity throughout the forged part, thereby increasing the bearing's service life. In reverse extrusion, the blank is ejected from the forming die by a lower die. The lower die is connected by a beam that moves up and down, with the upper half of the tie rods mounted on the press slide, and the ejection and lowering motions are completed within a single press stroke. In recent years, the rolling bearing ring forging industry has seen widespread use of robots or manipulators for automated production. The blank, ejected after extrusion molding, must remain at a consistent height upon ejection, enabling accurate and convenient robotic gripping and movement. This necessitates timely adjustment of the tie rods to maintain the desired height when the die wears.
[0003] Reference Figure 1 As shown, the existing tie rod adjustment device of the bearing ring press forging tooling is mainly composed of the following components: a lower tie rod with a lower joint 20 connected to the upper end, an upper tie rod 21 equipped with an upper joint 23 at the upper end, and a fastening nut 22 screwed onto the outer wall of the upper tie rod 21. The upper tie rod 21 and the lower joint 20 are connected to each other by threaded cooperation, so as to realize flexible adjustment of the overall length of the tie rod.
[0004] However, in the actual operating environment, we found that under the repeated effects of high-temperature oxide scale, cooling water, etc., the internal thread area of the lower joint 20 is extremely susceptible to rust erosion or oxide scale accumulation and blockage. This situation directly makes it difficult for the upper pull rod 21 to rotate and adjust smoothly. In severe cases, it may even cause the upper pull rod 21 and the lower joint 20 to be scrapped, resulting in the need to shut down the production line, increasing the frequency and cost of mold replacement, and restricting production efficiency. Utility Model Content
[0005] The purpose of the utility model is to provide a tie rod adjustment device for a bearing ring press forging tooling, which is used to solve the problem of existing devices that high-temperature oxide scale and cooling water easily cause the internal thread of the lower joint to rust or clog, resulting in difficulty in adjusting the upper tie rod. In serious cases, the upper tie rod will be scrapped and the machine will need to be shut down for replacement, which increases costs and reduces production efficiency.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pull rod adjustment device for a bearing ring press forging tooling, comprising a working plate, a workbench, a crossbeam, and an upper mold mounting plate arranged on the workbench, wherein the working plate, the workbench, and the crossbeam are arranged in sequence from top to bottom, and further comprising two adjustment joint mechanisms arranged on the working plate and arranged in sequence, an adjustable pull rod threadedly engaged with the two adjustment joint mechanisms respectively, and a fastening mechanism threadedly engaged with the adjustable pull rod and connected to the lower end of the adjustment joint mechanism, wherein one end of the adjustable pull rod passes through the upper mold mounting plate and the workbench in sequence and is connected to the crossbeam.
[0007] Furthermore, the upper side of the working plate is provided with two circular grooves arranged at intervals, and the lower side of the working plate is provided with two through-holes arranged at intervals, and the circular grooves arranged opposite to each other are connected to the through-holes; the adjusting joint mechanism includes a cylindrical table, a round table provided on the top of the outer wall of the cylindrical table, an adjusting cavity provided on the upper side of the cylindrical table, and an internal threaded hole provided on the lower side of the cylindrical table and connected to the adjusting cavity, the round table slides inside the circular groove, and one end of the cylindrical table passes through the through-hole and extends to the bottom of the working plate.
[0008] Furthermore, the adjustable pull rod includes a hexagonal nut arranged on the lower side of the beam, a pull rod body threadedly engaged with the hexagonal nut, a holding rod arranged at the upper end of the pull rod body, and an externally threaded rod arranged at one end of the holding rod, wherein the externally threaded rod is threadedly engaged with the internally threaded hole and one end extends into the adjustment cavity.
[0009] Furthermore, the fastening mechanism includes an internal threaded ring provided at the lower end of the cylindrical platform, an external threaded ring threadedly matched with the internal threaded ring, a locking nut connected to the lower end of the external threaded ring and threadedly matched with the external threaded rod, and the external threaded ring is sleeved on the outer wall of the external threaded rod.
[0010] Furthermore, the workbench and the upper mold mounting plate are both provided with through openings for the pull rod body to pass through.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0012] When the utility model adjusts the overall length of the adjustable pull rod, an adjusting joint mechanism is arranged on the working plate and is connected with the upper end thread of the adjustable pull rod to achieve adjustment. Then, the adjusting device is connected in a manner that the adjusting joint mechanism is above and the adjustable pull rod is below, so that the internal threaded hole of the adjusting joint mechanism is set downward, thereby preventing rust and blockage caused by oxide scale and cooling water, improving production efficiency and saving tooling and mold costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A schematic cross-sectional view of a drawbar adjustment device of an existing bearing ring press forging tooling;
[0014] Figure 2 This is a cross-sectional diagram of the tie rod adjustment device of the bearing ring press forging tooling of the present invention;
[0015] Figure 3 It is a cross-sectional schematic diagram of the connection mechanism of the present utility model.
[0016] In the figure: 1. Workbench; 2. Crossbeam; 3. Upper mold mounting plate; 4. Work plate; 5. Adjustable pull rod; 6. Pull rod body; 7. Hexagonal nut; 8. Holding rod; 9. Externally threaded rod; 10. Locking nut; 11. Fastening mechanism; 12. Circular groove; 13. Through hole; 14. Round table; 15. Cylindrical table; 16. Internally threaded hole; 17. Adjustment cavity; 18. Internally threaded ring; 19. Externally threaded ring; 20. Lower joint; 21. Upper pull rod; 22. Fastening nut; 23. Upper joint. DETAILED DESCRIPTION
[0017] See also Figure 2-3 A tie rod adjustment device for a bearing ring press forging tooling comprises a working plate 4, a working table 1, a crossbeam 2, and an upper die mounting plate 3 provided on the working table 1. The working plate 4, the working table 1, and the crossbeam 2 are sequentially arranged from top to bottom. The device also comprises two adjustment joint mechanisms arranged on the working plate 4 and spaced apart, an adjustable tie rod 5 threadedly engaged with the two adjustment joint mechanisms, a fastening mechanism 11 threadedly engaged with the adjustable tie rod 5 and connected to the lower end of the adjustment joint mechanism, one end of the adjustable tie rod 5 passes through the upper The mold mounting plate 3 and the workbench 1 are connected to the crossbeam 2; when adjusting the adjustable pull rod 5, first rotate the fastening mechanism 11 downward, then twist the adjustable pull rod 5 to complete the adjustment of the length of the adjustable pull rod 5, and then rotate the fastening mechanism 11 upward. The adjustment device is connected in a manner that the adjusting joint mechanism is on top and the adjustable pull rod 5 is on the bottom, so that the internal threaded hole 16 of the adjusting joint mechanism is set downward, which eliminates the rust and blockage caused by oxide scale and cooling water, improves production efficiency, and saves tooling and mold costs.
[0018] Two circular grooves 12 arranged at intervals are provided on the upper side of the working plate 4, and two through-holes 13 arranged at intervals and connected to the relatively arranged circular grooves 12 are provided on the lower side of the working plate 4; the adjusting joint mechanism includes a cylindrical table 15, a round table 14 connected to the top of the outer wall of the cylindrical table 15, an adjusting cavity 17 provided on the upper side of the cylindrical table 15, and an internal threaded hole 16 provided on the lower side of the cylindrical table 15 and connected to the adjusting cavity 17. The round table 14 slides in the interior of the circular groove 12, and one end of the cylindrical table 15 passes through the through-hole 13 and extends to the bottom of the working plate 4; through the circular groove 12 and the through-hole 13, the adjusting joint mechanism consisting of the cylindrical table 15 and the round table 14 can be hung on the working plate 4, and the round table 14 can rotate freely in the circular groove 12.
[0019] The adjustable pull rod 5 includes a hexagonal nut 7 provided on the lower side of the beam 2, a pull rod body 6 threadedly engaged with the hexagonal nut 7, a holding rod 8 provided at the upper end of the pull rod body 6, and an externally threaded rod 9 provided at one end of the holding rod 8. The externally threaded rod 9 is threadedly engaged with the internally threaded hole 16 and one end extends into the adjustment cavity 17; one end of the pull rod body 6 passes through the upper mold mounting plate 3, the workbench 1, and the beam 2 in sequence, and the hexagonal nut 7 is screwed on the end through the beam 2 to achieve fixation. During operation, when the fastening mechanism 11 is rotated, the holding rod 8 is clamped by the adjustable wrench to facilitate fixing the externally threaded rod 9. The externally threaded rod 9 is threadedly engaged with the internally threaded hole 16 to adjust the overall length of the adjustable pull rod 5.
[0020] The fastening mechanism 11 includes an internal threaded ring 18 connected to the lower end of the cylindrical platform 15 and an external threaded ring 19 threadedly matched with the internal threaded ring 18, and a locking nut 10 connected to the lower end of the external threaded ring 19 and threadedly matched with the external threaded rod 9. The external threaded ring 19 is sleeved on the outer wall of the external threaded rod 9; after adjusting the length of the adjustable pull rod 5, the locking nut 10 is screwed upward, and the locking nut 10 drives the external threaded ring 19 to be screwed into the internal threaded ring 18, so that the external threaded ring 19 and the internal threaded ring 18 are locked with each other, thereby preventing the adjustable pull rod 5 from loosening.
[0021] Both the workbench 1 and the upper mold mounting plate 3 are provided with through openings for the pull rod body 6 to pass through; the through openings facilitate the pull rod body 6 to pass through the workbench 1 and the upper mold mounting plate 3.
[0022] Working principle: When adjusting the adjustable pull rod 5, clamp the holding rod 8 with an adjustable wrench, and screw the locking nut 10 downward to move the external threaded ring 19 away from the internal threaded ring 18. Then clamp the internal threaded ring 18 and screw the holding rod 8 with an adjustable wrench to drive the external threaded rod 9 to rotate, thereby completing the adjustment of the length of the entire adjustable pull rod 5. After adjustment, screw the locking nut 10 upward, and the locking nut 10 drives the external threaded ring 19 to screw into the internal threaded ring 18, so that the external threaded ring 19 and the internal threaded ring 18 are locked with each other. The adjusting device is connected in a manner that the adjusting joint mechanism is on top and the adjustable pull rod 5 is on the bottom, so that the internal threaded hole 16 of the adjusting joint mechanism is set downward, which eliminates the occurrence of rust and blockage caused by oxide scale and cooling water, improves production efficiency, and saves tooling costs.
[0023] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A tie rod adjustment device for a bearing ring press forging tooling, comprising a working plate (4), a workbench (1), a crossbeam (2), and an upper die mounting plate (3) arranged on the workbench (1), wherein the working plate (4), the workbench (1), and the crossbeam (2) are arranged in sequence from top to bottom, and characterized in that: It also includes two adjustment joint mechanisms arranged on the working plate (4) and spaced apart, an adjustable pull rod (5) threadedly engaged with the two adjustment joint mechanisms, and a fastening mechanism (11) threadedly engaged with the adjustable pull rod (5) and connected to the lower end of the adjustment joint mechanism, one end of the adjustable pull rod (5) sequentially passes through the upper mold mounting plate (3), the working table (1) and is connected to the crossbeam (2).
2. A tie rod adjustment device for a bearing ring press forging tool as claimed in claim 1, characterized in that: The upper side of the working plate (4) is provided with two circular grooves (12) arranged at intervals, and the lower side of the working plate (4) is provided with two through-holes (13) arranged at intervals, and the circular grooves (12) arranged opposite to each other are connected to the through-holes (13); the adjusting joint mechanism includes a columnar platform (15), a round platform (14) provided on the top of the outer wall of the columnar platform (15), an adjusting cavity (17) provided on the upper side of the columnar platform (15), and an internal threaded hole (16) provided on the lower side of the columnar platform (15) and connected to the adjusting cavity (17); the round platform (14) is slidably fitted in the interior of the circular groove (12), and one end of the columnar platform (15) passes through the through-hole (13) and extends to the bottom of the working plate (4).
3. The drawbar adjustment device for a bearing ring press forging tool as claimed in claim 2, characterized in that: The adjustable pull rod (5) comprises a hexagonal nut (7) provided on the lower side of the cross beam (2), a pull rod body (6) threadedly engaged with the hexagonal nut (7), a holding rod (8) provided at the upper end of the pull rod body (6), and an externally threaded rod (9) provided at one end of the holding rod (8), wherein the externally threaded rod (9) is threadedly engaged with the internally threaded hole (16) and one end of the externally threaded rod (9) extends into the adjustment cavity (17).
4. A tie rod adjustment device for a bearing ring press forging tool as claimed in claim 3, characterized in that: The fastening mechanism (11) comprises an internal threaded ring (18) provided at the lower end of the columnar platform (15), an external threaded ring (19) threadably engaged with the internal threaded ring (18), and a locking nut (10) connected to the lower end of the external threaded ring (19) and threadably engaged with the external threaded rod (9); the external threaded ring (19) is sleeved on the outer wall of the external threaded rod (9).
5. The drawbar adjustment device for a bearing ring press forging tool as claimed in claim 3, characterized in that: The workbench (1) and the upper mold mounting plate (3) are both provided with through openings for the pull rod body (6) to pass through.