Simple tool for twisting trial-manufactured crankshaft by 90 degrees
By designing simple tooling for snap rings and drive devices, the problems of high cost and long cycles during the 90° crankshaft torsion trial production process are solved, low-cost and short-cycle trial production are achieved, and product performance and customer needs are met.
Patent Information
- Application Number
- CN202421444078.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The prior art has high cost and long trial production cycles during the trial production process of crankshaft torsion of 90°, and affects product performance.
A simple tooling for trial-made crankshaft twisting 90° is designed, including a first snap ring and a second snap ring, and a driving device. Through the synergistic action of the first snap ring and the second snap ring, the two ends of the workpiece are fixed, and the crankshaft is twisted by the driving device, and the 90° twist is achieved by heating with a flame spray gun.
It has achieved a crankshaft trial production with low cost and short trial production cycle, meeting product performance and customer trial production needs.
Smart Images
Figure CN222659766U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crankshaft trial production and processing, in particular to a simple tool for trial production of a crankshaft twisted by 90 degrees. Background Art
[0002] At present, there are two main ways to twist the crankshaft by 90° in China:
[0003] First, use a twisting machine to twist. This method is feasible when the product technology is mature and mass production is in progress; however, in the trial production stage when the crankshaft is twisted 90°, the trial production process is long, and the number of modified parts and times is large. When this method is used, the product and mold need to be remade after the design is modified once, so there are many sets of molds, the manufacturing cycle is quite long, there is serious waste, and the investment is huge. General enterprises cannot afford its cost;
[0004] The second method is to process the raw materials directly. This method requires a high-precision milling and turning machining center, which is quite expensive. In addition, this method requires cutting the metal flow line during processing, which affects the product performance and further affects the crankshaft trial production results.
[0005] Based on the above technical problems, there is an urgent need to provide a simple tooling to meet the requirements of low cost and short trial production cycle. Utility Model Content
[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a simple tooling for trial-producing a crankshaft twist of 90°, which not only meets the requirements of low cost and short trial-production cycle, but also meets the product performance and customer trial-production needs.
[0007] The purpose of this utility model is achieved through the following technical solutions:
[0008] A simple tool for trial-producing a crankshaft twisting by 90°, comprising a first clamping ring and a second clamping ring for fixing a workpiece, and a driving device for driving the first clamping ring to rotate with the horizontal axis of the workpiece as a rotating axis;
[0009] The first clasp includes a first upper clasp and a first lower clasp matched with the first upper clasp;
[0010] The second snap ring includes a second upper snap ring and a second lower snap ring matched with the second upper snap ring.
[0011] Preferably, the first lower snap ring is provided with a first snap ring lock buckle for locking the first upper snap ring and the first lower snap ring; the second lower snap ring is provided with a second snap ring lock buckle for locking the second upper snap ring and the second lower snap ring.
[0012] Preferably, screws are provided between the first upper clamping ring and the first lower clamping ring, and between the second upper clamping ring and the second lower clamping ring.
[0013] Preferably, the driving device includes a lathe, a chuck rotatably arranged on the lathe, a claw arranged on the chuck, and a tailstock arranged on the lathe, and the tailstock can move in a horizontal direction; a socket is arranged on a side of the tailstock close to the chuck.
[0014] Preferably, a square step is provided in the insertion hole, and a step structure matching the square step is provided on the second lower clamping ring.
[0015] Preferably, the chuck is provided with a pry hole, and a crowbar is movably provided in the pry hole.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] By providing a first retaining ring including a first upper retaining ring and a first lower retaining ring matched with the first upper retaining ring, the large head part of the workpiece (i.e., the crankshaft) can be fixed; by providing a second retaining ring including a second upper retaining ring and a second lower retaining ring matched with the second upper retaining ring, the small head part of the workpiece (i.e., the crankshaft) can be fixed; through the synergistic effect of the first retaining ring and the second retaining ring, the two ends of the workpiece can be fixed; by providing a driving device that drives the first retaining ring to rotate with the horizontal axis of the workpiece as the rotating axis, after the two ends of the workpiece are fixed, the first retaining ring can be driven to rotate, and the main shaft neck of the workpiece can be heated by a flame spray gun during rotation, thereby achieving the purpose of twisting the crankshaft 90°.
[0018] The tooling used in the utility model is extremely simple, which not only meets the requirements of low cost and short trial production period, but also meets the product performance and customer trial production needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model in the front view direction;
[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in the top view direction;
[0021] In the figure: 1-first upper clamping ring, 2-first lower clamping ring, 3-second upper clamping ring, 4-second lower clamping ring, 5-first clamping ring lock, 6-second clamping ring lock, 7-lathe, 8-chuck, 9-claw, 10-tailstock, 11-jack, 12-crowbar, 13-workpiece, 14-flame spray gun. DETAILED DESCRIPTION
[0022] Below in conjunction with the attached Figure 1 to Figure 2, the technical solutions in the embodiments of the utility model are clearly and completely described, but the protection scope of the utility model is not limited to the following.
[0023] Example 1
[0024] At present, there are two main ways to twist the crankshaft by 90° in China:
[0025] First, use a twisting machine to twist. This method is feasible when the product technology is mature and mass production is in progress; however, in the trial production stage when the crankshaft is twisted 90°, the trial production process is long, and the number of modified parts and times is large. When this method is used, the product and mold need to be remade after the design is modified once, so there are many sets of molds, the manufacturing cycle is quite long, there is serious waste, and the investment is huge. General enterprises cannot afford its cost;
[0026] The second method is to process the raw materials directly. This method requires a high-precision milling and turning machining center, which is quite expensive. In addition, this method requires cutting the metal flow line during processing, which affects the product performance and further affects the crankshaft trial production results.
[0027] Based on the above technical problems, the utility model provides a simple tooling for trial-producing a crankshaft twisting 90°, such as Figure 1 As shown, it includes a first clamping ring and a second clamping ring for fixing a workpiece 13, and a driving device for driving the first clamping ring to rotate with the horizontal axis of the workpiece 13 (i.e., the crankshaft) as the rotation axis;
[0028] The first clasp comprises a first upper clasp 1 and a first lower clasp 2 adapted to the first upper clasp 1;
[0029] The second clamping ring includes a second upper clamping ring 3 and a second lower clamping ring 4 matched with the second upper clamping ring 3 .
[0030] Further, such as Figure 1 As shown, the driving device includes a lathe 7, a chuck 8 rotatably arranged on the lathe 7, a claw 9 arranged on the chuck 8, and a tailstock 10 arranged on the lathe 7, and the tailstock 10 can move in the horizontal direction; a socket 11 is arranged on the side of the tailstock 10 close to the chuck 8.
[0031] Working principle: The qualified forged workpiece 13 is loaded into the first lower clamp ring 2 and the second lower clamp ring 4. Afterwards, the first upper clamp ring 1 adapted to the first lower clamp ring 2 is installed above the first lower clamp ring 2 to form an upper first clamp ring, and the second upper clamp ring 3 adapted to the second lower clamp ring 4 is installed above the second lower clamp ring 4 to form a second clamp ring. Figure 1As shown, the first clamping ring fixes the large end (i.e., the left end) of the workpiece 13, and the second clamping ring fixes the small end (i.e., the right end) of the workpiece 13, and then the tailstock 10 is moved away from the clamping claw 9 (i.e., to the right), and the right end of the second lower clamping ring 4 is extended into the insertion hole 11, and then the tailstock 10 and the second clamping ring are moved to the left synchronously until the clamping claw 9 (the clamping claw 9 is the prior art) clamps the first clamping ring. Then, the chuck 8 is rotated so that the chuck 8 rotates with the horizontal axis of the workpiece 13 as the rotation axis. During the rotation process, the first clamping ring is driven to rotate, and the second clamping ring does not rotate; as shown in FIG. Figure 2 As shown, during the rotation process, a flame spray gun 14 needs to be arranged at the main journal of the workpiece 13, and the main journal of the workpiece 13 is locally heated by the flame spray gun 14. After the temperature reaches 850°, the chuck 8 is rotated 90°, thereby achieving the purpose of twisting the crankshaft 90°.
[0032] The tooling used in the utility model is extremely simple, which not only meets the requirements of low cost and short trial production period, but also meets the product performance and customer trial production needs.
[0033] Further, on the basis of Example 1, Figure 2 As shown, the first lower snap ring 2 is provided with a first snap ring lock buckle 5 (existing technology) for locking the first upper snap ring 1 and the first lower snap ring 2; the second lower snap ring 4 is provided with a second snap ring lock buckle 6 for locking the second upper snap ring 3 and the second lower snap ring 4. By providing the first snap ring lock buckle 5, the first upper snap ring 1 and the first lower snap ring 2 can be preliminarily fixed; by providing the second snap ring lock buckle 6, the second upper snap ring 3 and the second lower snap ring 4 can be preliminarily fixed.
[0034] Further, such as Figure 2 As shown, screws are provided between the first upper snap ring 1 and the first lower snap ring 2, and between the second upper snap ring 3 and the second lower snap ring 4. In this solution, by providing screws between the first upper snap ring 1 and the first lower snap ring 2, the firmness between the first upper snap ring 1 and the first lower snap ring 2 can be further improved on the basis of the first snap ring lock 5; by providing screws between the second upper snap ring 3 and the second lower snap ring 4, the firmness between the second upper snap ring 3 and the second snap ring can be further improved on the basis of the second snap ring lock 6.
[0035] Further, on the basis of Example 1, Figure 1 As shown, a square step is provided in the insertion hole 11, and a step structure matching the square step is provided on the second lower clamping ring 4. In this solution, by providing the square step, it is possible to ensure that the second clamping ring does not rotate.
[0036] Further, in order to improve the convenience of the rotation of the chuck 8, as Figure 1As shown, the chuck 8 is provided with a pry hole, and a crowbar 12 is movably provided in the pry hole. When in use, the staff extends the crowbar 12 into the pry hole, and then rotates the crowbar 12 with force, so that the chuck 8 can be rotated, and the operation is extremely convenient.
[0037] In the description of this patent, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the position or location relationship based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent.
[0038] The above are only preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present invention through the above teachings or the technology or knowledge in the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.
Claims
1. A simple tooling for trial-producing a crankshaft twisting 90°, characterized in that: It comprises a first clamping ring and a second clamping ring for fixing a workpiece (13), and a driving device for driving the first clamping ring to rotate with the horizontal axis of the workpiece (13) as the rotation axis; The first clamping ring comprises a first upper clamping ring (1) and a first lower clamping ring (2) adapted to the first upper clamping ring (1); The second clamping ring comprises a second upper clamping ring (3) and a second lower clamping ring (4) adapted to the second upper clamping ring (3).
2. A simple tooling for trial-producing a crankshaft twisting by 90° according to claim 1, characterized in that: The first lower snap ring (2) is provided with a first snap ring lock buckle (5) for locking the first upper snap ring (1) and the first lower snap ring (2); and the second lower snap ring (4) is provided with a second snap ring lock buckle (6) for locking the second upper snap ring (3) and the second lower snap ring (4).
3. A simple tooling for trial-producing a crankshaft twisting by 90° according to claim 2, characterized in that: Screws are provided between the first upper clamping ring (1) and the first lower clamping ring (2), and between the second upper clamping ring (3) and the second lower clamping ring (4).
4. The simple tooling for trial-producing a crankshaft twisting by 90° according to claim 1, characterized in that: The driving device comprises a lathe (7), a chuck (8) rotatably arranged on the lathe (7), a claw (9) arranged on the chuck (8), and a tailstock (10) arranged on the lathe (7), wherein the tailstock (10) is movable in a horizontal direction; a socket (11) is arranged on a side of the tailstock (10) close to the chuck (8).
5. A simple tooling for trial-producing a crankshaft twisting by 90° according to claim 4, characterized in that: A square step is provided in the insertion hole (11), and a step structure matching the square step is provided on the second lower clamping ring (4).
6. A simple tooling for trial-producing a crankshaft twisting by 90° according to claim 4, characterized in that: The chuck (8) is provided with a pry hole, and a pry bar (12) is movably arranged in the pry hole.