CN221754376U - Crankshaft straightening tool - Google Patents

Abstract

The utility model relates to the technical field of crankshafts and discloses a crankshaft straightening tool, which comprises an operating table, wherein two movable grooves are symmetrically arranged on the surface of the operating table, a screw rod is rotatably arranged in each movable groove, a fixed seat is movably arranged in each movable groove, a semicircular groove is arranged at the top of each fixed seat, the bottom end threads of each fixed seat are sleeved on the surface of each screw rod, stepping motors are arranged at the two ends of the operating table through bolts, and the output ends of the stepping motors are connected with the screw rods.

Description

Crankshaft straightening tool

Technical Field

The utility model relates to the technical field of crankshafts, in particular to a crankshaft straightening tool.

Background Art

In crankshaft manufacturing, a press is mainly used to cold straighten the crankshaft. The method is to support the crankshaft with two support blocks and apply pressure to the bent part of the crankshaft to make the crankshaft produce stable plastic deformation to achieve the purpose of straightening.

After searching, the Chinese utility model patent with publication number: CN214639286U discloses a simple crankshaft straightening and straightening tool, including a workbench, a fixed crankshaft support seat and a movable slide groove are fixedly arranged on the workbench surface, a movable crankshaft support seat is arranged inside the movable slide groove, and the fixed crankshaft support seat and the movable crankshaft support seat are provided with corresponding placement grooves for installation and facilitating the rotation of the crankshaft. The workbench is also equipped with a crankshaft straightening device and a crankshaft straightening device. The present application determines whether the surface of the crankshaft is straight by the depth marks left by the viscous marking liquid. When the convex surface of the crankshaft is not straight, move the corresponding position of the crankshaft to the bottom of the crankshaft straightening device, rotate the handle to make the top pressure head press against the raised position of the crankshaft, so that the raised position of the crankshaft can be flattened, making the crankshaft surface straight and ensuring the quality of the crankshaft.

From the analysis of the above technical solutions, it can be seen that the current crankshaft straightening tooling is equipped with two fixed seats, which cannot adapt to the length changes of the workpiece. When straightening the bent part of the workpiece, the position of the straightening device needs to be constantly moved, and the operation is relatively complicated.

Utility Model Content

The purpose of the utility model is to provide a crankshaft straightening tool to solve the problem that the current crankshaft straightening tool proposed in the above background technology is equipped with two fixed seats, which cannot adapt to the length change of the workpiece. When straightening the bent part of the workpiece, it is necessary to continuously move the position of the straightening device, which makes the operation more complicated.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft straightening tool, including an operating table, wherein two movable grooves are symmetrically arranged on the surface of the operating table, a screw rod is rotatably arranged inside the movable groove, a fixed seat is movably arranged inside the movable groove, a semicircular groove is arranged on the top of the fixed seat, and the bottom end of the fixed seat is threadedly sleeved on the surface of the screw rod, stepper motors are installed at both ends of the operating table by bolts, and the output end of the stepper motor is connected to the screw rod.

Furthermore, a guide rod is installed inside the movable groove and on one side of the screw rod, and the bottom end of the fixing seat passes through the guide rod.

Furthermore, a sliding table is installed on the end surface of the fixed seat by bolts, and the sliding table is located above the operating table. A top block is fixedly provided on the surface of the sliding table, and a top point is provided on the surface of the top block. The top point and the semicircular groove are on the same horizontal line.

Furthermore, a groove is arranged on the surface of the operating table, and a convex block corresponding to the groove is arranged on the bottom of the sliding table.

Furthermore, the groove is exposed on the outside of the operating table, and the protrusion is slidably installed inside the groove.

Furthermore, a support block is fixedly arranged on the surface of the operating table and between the two fixing seats.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model arranges a screw rod and a stepping motor so that the fixing seat can move in the movable groove through the rotation of the screw rod, and the distance between the two fixing seats can be adjusted to adapt to the change of the length of the workpiece. Moreover, the two fixing seats are independently arranged and can always move the bent part of the crankshaft to be directly below the straightening device. The utility model has a simple structure and is convenient to operate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a crankshaft straightening tool of the present invention;

FIG2 is a front view of a crankshaft straightening tool of the present invention;

FIG3 is an enlarged view of point A in FIG1 of a crankshaft straightening tool of the present invention.

In the figure: 1. operating table; 2. fixed seat; 3. semicircular groove; 4. movable groove; 5. screw rod; 6. guide rod; 7. sliding table; 8. top block; 9. top; 10. groove; 11. protrusion; 12. stepping motor; 13. support block.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

Please refer to Figures 1 to 3. The utility model provides a technical solution: a crankshaft straightening tool, including an operating table 1, the surface of the operating table 1 is symmetrically provided with two movable grooves 4, the movable groove 4 is provided with a screw rod 5 for rotation, the movable groove 4 is provided with a fixed seat 2 for movement, the top of the fixed seat 2 is provided with a semicircular groove 3, the bottom end of the fixed seat 2 is threadedly sleeved on the surface of the screw rod 5, and both ends of the operating table 1 are installed with a stepper motor 12 through bolts, and the output end of the stepper motor 12 is connected to the screw rod 5. By providing the screw rod 5 and the stepper motor 12, the fixed seat 2 can be moved in the movable groove 4 through the rotation of the screw rod 5, the spacing between the two fixed seats 2 can be adjusted, and the length change of the workpiece can be adapted, and the two fixed seats 2 are independently provided, and the bending part of the crankshaft can always be moved to the bottom of the straightening device, with a simple structure and convenient operation.

A guide rod 6 is arranged inside the movable groove 4 and on one side of the screw rod 5, and the bottom end of the fixed seat 2 passes through the guide rod 6. This ensures the stability of the fixed seat 2 when it moves, and improves the stability of the fixed seat 2 for mounting the crankshaft.

The end surface of the fixed seat 2 is fixed with a sliding table 7 by bolts, and the sliding table 7 is above the operating table 1. A top block 8 is fixedly arranged on the surface of the sliding table 7, and a top 9 is arranged on the surface of the top block 8. The top 9 is on the same horizontal line as the semicircular groove 3. The top 9 can be arranged at the end of the crankshaft to clamp the crankshaft, further ensuring the stability of the crankshaft during operation.

The surface of the operating table 1 is provided with a groove 10, and the bottom of the sliding table 7 is provided with a protrusion 11 corresponding to the groove 10. Since the sliding table 7 is fixedly connected to the fixed seat 2, when the fixed seat 2 moves, the sliding table 7 will also move, so that the cooperation between the groove 10 and the protrusion 11 can enhance the stability of the sliding table 7 when moving.

The groove 10 is exposed outside the operating table 1, and the protrusion 11 is slidably installed inside the groove 10. It is convenient for the staff to pour lubricating liquid into the groove 10 and clean the dust inside the groove 10.

A support block 13 is fixedly arranged on the surface of the operating table 1 and between the two fixing seats 2, so that the bending part of the crankshaft can be supported, thereby improving the integrity of the device structure.

Working principle: First, by setting the screw rod 5 and the stepper motor 12, the fixed seat 2 can be moved in the movable groove 4 through the rotation of the screw rod 5, and the distance between the two fixed seats 2 can be adjusted to adapt to the change in the length of the workpiece. In addition, the two fixed seats 2 are independently set and can always move the bent part of the crankshaft to the bottom of the straightening device. Then, when the top 9 clamps the end face of the crankshaft, the end of the crankshaft is placed inside the semicircular groove 3. Finally, the positions of the two fixed seats 2 are adjusted to set the bent part of the crankshaft directly above the support block 13.

Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims (6)

1. Crankshaft alignment frock, including following operation panel (1), its characterized in that: the surface symmetry of operation panel (1) is provided with two movable grooves (4), the inside rotation of movable groove (4) is provided with lead screw (5), the inside activity of movable groove (4) is provided with fixing base (2), the top of fixing base (2) is provided with semicircle groove (3), the bottom screw thread of fixing base (2) cup joints the surface of lead screw (5), step motor (12) are all installed through the bolt in the both ends of operation panel (1), the output of step motor (12) connect in lead screw (5).

2. The crankshaft straightening tool as claimed in claim 1, wherein: the guide rod (6) is arranged in the movable groove (4) and is positioned on one side of the screw rod (5), and the bottom end of the fixing seat (2) penetrates through the guide rod (6).

3. The crankshaft straightening tool as claimed in claim 1, wherein: the end face of fixing base (2) is installed through the bolt and is constructed sliding table (7), sliding table (7) are located the top of operation panel (1), the fixed surface of sliding table (7) is provided with kicking block (8), the surface of kicking block (8) is provided with top (9), top (9) with semicircle groove (3) are in same horizontal line.

4. A crankshaft straightening tool according to claim 3, wherein: the surface of the operation table (1) is provided with a groove (10), and the bottom of the sliding table (7) is provided with a lug (11) corresponding to the groove (10).

5. The crankshaft straightening tool as claimed in claim 4, wherein: the groove (10) is exposed to the outer side of the operation table (1), and the projection (11) is slidably mounted inside the groove (10).

6. The crankshaft straightening tool as claimed in claim 1, wherein: the surface of the operating platform (1) is fixedly provided with a supporting block (13) between the two fixed seats (2).