Multi-cylinder precision crankshaft turning tool accurate in positioning

Abstract

The utility model relates to the technical field of crankshaft turning, in particular to a multi-cylinder precision crankshaft turning tool accurate in positioning, which comprises a casing, a sliding door plate is slidably connected to the front end of the casing, a chuck is arranged on one side in the casing, and a hydraulic rod is embedded in the other side in the casing. The power output end of the hydraulic rod is connected with a tailstock, a bearing seat is embedded in the lower portion of the interior of the machine shell, and a supporting mechanism is arranged above the bearing seat. The supporting mechanism comprises a sliding table, the sliding table is slidably connected to the upper portion of the bearing base, through the sliding table, a fixing shell, an electromagnet and a permanent magnet block, the abutting plate can stably drive a limiting block to adjust the height through cooperation with a telescopic rod, a crankshaft can be limited and supported from the lower portion, and the crankshaft is prevented from being subjected to pressure or impact force in the turning process; and therefore, accurate positioning is achieved, and the situation that the turning accuracy is affected due to deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft turning, in particular to a multi-cylinder precision crankshaft turning tool with accurate positioning. Background Art

[0002] The crankshaft is one of the core parts of the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. After the connecting rod is installed, it can convert the up and down (reciprocating) motion of the connecting rod into a circular (rotational) motion. The gas pressure generated by the combustion of fuel in the combustion chamber is transmitted to the crankshaft through the piston and the connecting rod connected to it, and is converted into torque through the crankshaft, thereby driving the vehicle's transmission system, the engine's valve structure and other auxiliary devices.

[0003] In the prior art, when turning a crankshaft, the small neck end of the crankshaft is inserted into the lathe chuck, and the large head end of the crankshaft is limited to the tailstock, so as to position the crankshaft for machining.

[0004] Although the crankshaft is positioned by the cooperation of the chuck and the tailstock in the existing technical solution, the crankshaft connecting rod journal is turned by a forming cutter on a precision lathe, which generates vibration or shaking during turning, which may lead to inaccurate positioning and poor rolling effect, affecting the quality of crankshaft processing. Summary of the Invention

[0005] The purpose of the utility model is to provide a multi-cylinder precision crankshaft turning tool with accurate positioning, which can avoid the crankshaft from shaking due to pressure or impact during the turning process, and accurately position it to avoid offset that affects the turning accuracy, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-cylinder precision crankshaft turning tool with accurate positioning, comprising a housing, a sliding door panel being slidably connected to the front end of the housing, a chuck being provided on one side of the interior of the housing, a hydraulic rod being embedded in the other side of the interior of the housing, and a tailstock being connected to the power output end of the hydraulic rod, a bearing seat being embedded in the interior lower portion of the housing, and a support mechanism being provided above the bearing seat;

[0007] The supporting mechanism includes a sliding platform, which is slidably connected to the top of the bearing seat, and a fixed shell is fixed to the top of the sliding platform, an electromagnet is embedded in the lower part of the fixed shell, and a permanent magnet block is passed through the inside of the fixed shell, and a pressure plate is fixed to one end of the permanent magnet block passing through the fixed shell, and a limit block is embedded in the top of the pressure plate.

[0008] Preferably, a sliding structure is formed between the permanent magnet block and the fixed shell, and the fixed shell and the sliding platform are perpendicular to each other.

[0009] Preferably, an anti-collision pad is provided above the electromagnet inside the fixed shell, and telescopic rods are fixed on both sides of the fixed shell at the top of the sliding platform.

[0010] Preferably, a fitting mechanism is provided inside the limit block, and the fitting mechanism includes a damping spring. The damping spring is embedded in the limit block, and the top end of the damping spring is connected to a connecting block. A plurality of triangular plates are fixed above the connecting block, and a resistance roller is rotatably connected between two of the triangular plates.

[0011] Preferably, the connecting block forms an elastic structure with the limiting block through a damping spring, and the connecting block is fixedly connected to the triangular plate.

[0012] Preferably, a slide groove is provided on one side of the sliding platform at the top of the bearing seat, and a slider is slidably connected inside the slide groove. A drive motor is embedded on one side of the outer wall of the bearing seat, and a bidirectional threaded rod is connected to the power output end of the drive motor.

[0013] Preferably, the bidirectional threaded rod is threadedly connected to the slider, and the slider forms a sliding structure with the sliding platform through a sliding groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the sliding table, fixed shell, electromagnet and permanent magnet block, and in conjunction with the telescopic rod, the pressure plate can stably drive the limit block to adjust the height, and can provide limit support for the crankshaft from below to prevent pressure or impact during the turning process, which may cause the crankshaft to shake, and ensure accurate positioning to avoid offset that affects the turning accuracy;

[0016] 2. Through the connecting block, triangular plate, friction roller and damping spring, and in conjunction with the support mechanism, the damping spring can be compressed, allowing the friction roller to limit the crankshaft from both sides below, thereby improving positioning accuracy and avoiding excessive fit that affects the rotation of the crankshaft during turning. Through the slide groove, slider, drive motor and bidirectional threaded rod, the position of the support mechanism can be adjusted, and adjustment can be made according to the length of the crankshaft to improve applicability and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the casing of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the bearing seat of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the fixed shell of the utility model;

[0022] Figure 5 This is a schematic structural diagram of the damping spring of the utility model.

[0023] Description of reference numerals:

[0024] 1. Casing; 2. Sliding door panel; 3. Chuck; 4. Hydraulic rod; 5. Tailstock; 6. Bearing seat; 7. Support mechanism; 701. Sliding table; 702. Fixed shell; 703. Electromagnet; 704. Permanent magnet block; 705. Pressure plate; 706. Limit block; 8. Anti-collision pad; 9. Telescopic rod; 10. Fitting mechanism; 1001. Connecting block; 1002. Triangle plate; 1003. Contact roller; 1004. Damping spring; 11. Slide groove; 12. Slider; 13. Drive motor; 14. Bidirectional threaded rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 4A multi-cylinder precision crankshaft turning tool with accurate positioning includes a casing 1, a sliding door panel 2 is slidably connected to the front end of the casing 1, a chuck 3 is provided on one side of the interior of the casing 1, a hydraulic rod 4 is embedded on the other side of the interior of the casing 1, and the power output end of the hydraulic rod 4 is connected to the tailstock 5, a bearing seat 6 is embedded at the lower part of the interior of the casing 1, and a support mechanism 7 is provided above the bearing seat 6; the support mechanism 7 includes a sliding platform 701, which is slidably connected to the top of the bearing seat 6, and a fixed shell 702 is fixed to the top of the sliding platform 701. An electromagnet 703 is embedded in the lower part of the fixed shell 702, and a permanent magnet block 704 is protruding from the inside of the fixed shell 702. A pressure plate 705 is fixed to one end of the permanent magnet block 704 protruding from the fixed shell 702, and a limiting block 706 is embedded in the top of the pressure plate 705. A sliding structure is formed between the permanent magnet block 704 and the fixed shell 702. The fixed shell 702 and the sliding platform 701 are perpendicular to each other. An anti-collision pad 8 is provided above the electromagnet 703 inside the fixed shell 702, and telescopic rods 9 are fixed on both sides of the fixed shell 702 at the top of the sliding platform 701.

[0028] By adopting the above technical solution, the crankshaft is easily placed into the casing 1 by closing the switch of the sliding door panel 2, and the small neck end of the crankshaft is fixedly clamped by the chuck 3. Then, the tailstock 5 is adjusted by the hydraulic rod 4 according to the length of the crankshaft to limit the large head end, so that the crankshaft can be turned. The sliding table 701 slidably connected to the support seat 6 is embedded with the electromagnet 703 through the fixed shell 702. When the electromagnet 703 is started, it can repel the permanent magnet block 704 with the same magnetic pole along the top of the fixed shell 702, driving the pressure plate 705 to make the limit block 706 approach the crankshaft and contact it. The magnetic force of the electromagnet 703 and the permanent magnet block 704 can meet the resistance to the outer wall of the crankshaft with different inner diameters, thereby performing precise positioning to avoid shaking due to force during the processing process. The telescopic rod 9 improves the sliding stability of the pressure plate 705 to avoid deviation. When the electromagnet 703 disconnects the permanent magnet block 704 and slides down, the anti-collision pad 8 prevents direct collision with the electromagnet 703 and damage.

[0029] Specifically, such as Figure 2 、 Figure 3 and Figure 5As shown, a fitting mechanism 10 is provided inside the limit block 706, and the fitting mechanism 10 includes a damping spring 1004, which is embedded in the limit block 706, and the top of the damping spring 1004 is connected to a connecting block 1001, and a plurality of triangular plates 1002 are fixed above the connecting block 1001, and a resistance roller 1003 is rotatably connected between the two triangular plates 1002, and the connecting block 1001 forms an elastic structure with the limit block 706 through the damping spring 1004, and the connecting block 1001 is fixedly connected to the triangular plate 1002, and a sliding groove 11 is provided on one side of the sliding platform 701 at the top of the supporting seat 6, and a slider 12 is slidably connected inside the sliding groove 11, and a driving motor 13 is embedded on one side of the outer wall of the supporting seat 6, and the power output end of the driving motor 13 is connected to a bidirectional threaded rod 14, and the bidirectional threaded rod 14 is threadedly connected to the slider 12, and the slider 12 forms a sliding structure with the sliding platform 701 through the sliding groove 11.

[0030] By adopting the above technical solution, the limit block 706 elastically pushes the connecting block 1001 through the damping spring 1004, so that the triangle plate 1002 can rotate and connect the contact roller 1003 to press and fit the outer wall of the crankshaft, and limit it from both sides to avoid left and right shaking during the turning process, resulting in offset and improving positioning accuracy. At the same time, the contact roller 1003 is used to limit the position while avoiding affecting the rotation of the crankshaft itself. The driving motor 13 drives the bidirectional threaded rod 14, so that the two sliders 12 drive the corresponding sliding table 701 along the slide groove 11 to adjust the position, and adjust the applicable position according to the length of the crankshaft to avoid tilting during processing.

[0031] Working principle: The crankshaft is placed in the machine casing 1 by sliding the door panel 2 to facilitate opening and closing. The small neck end of the crankshaft is fixedly clamped by the chuck 3. Then the hydraulic rod 4 is adjusted according to the length of the crankshaft to allow the tailstock 5 to limit the large end of the crankshaft. Then the turning process is carried out. The bidirectional threaded rod 14 is driven by the driving motor 13 to rotate, so that the slider 12 drives the sliding table 701 along the slide 11 and slides on the bearing seat 6 according to the crankshaft adjustment position. It is located at two-fifths and four-fifths respectively to maintain stable support. Then the electromagnet 703 is started to generate magnetic force to repel The permanent magnet block 704 with the same magnetic pole rises along the fixed shell 702, thereby allowing the pressure plate 705 to rise and allowing the limit block 706 to be located under the crankshaft. The damping spring 1004 elastically pushes the connecting block 1001, allowing the two sets of triangular plates 1002 to rotate and connect the contact roller 1003 to accurately position the crankshaft, while avoiding affecting the rotation during turning. The stability of the movement of the pressure plate 705 is improved by the telescopic rod 9, and the anti-collision pad 8 is used to prevent the permanent magnet block 704 from sliding down and hitting the electromagnet 703 when the electromagnet 703 is disconnected, causing damage.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-cylinder precision crankshaft turning tool with accurate positioning, comprising a housing (1), characterized in that: The front end of the housing (1) is slidably connected to a sliding door panel (2), and a chuck (3) is provided on one side of the interior of the housing (1). A hydraulic rod (4) is embedded on the other side of the interior of the housing (1), and the power output end of the hydraulic rod (4) is connected to a tailstock (5). A bearing seat (6) is embedded at the lower part of the interior of the housing (1), and a supporting mechanism (7) is provided above the bearing seat (6). The support mechanism (7) includes a sliding platform (701), the sliding platform (701) is slidably connected to the top of the bearing seat (6), and a fixed shell (702) is fixed to the top of the sliding platform (701), an electromagnet (703) is embedded in the lower part of the interior of the fixed shell (702), and a permanent magnet block (704) is inserted through the interior of the fixed shell (702), a pressure plate (705) is fixed to one end of the permanent magnet block (704) that passes through the fixed shell (702), and a limit block (706) is embedded at the top of the pressure plate (705).

2. The accurately positioned multi-cylinder precision crankshaft turning tool according to claim 1, characterized in that: A sliding structure is formed between the permanent magnet block (704) and the fixed shell (702), and the fixed shell (702) and the sliding platform (701) are perpendicular to each other.

3. The multi-cylinder precision crankshaft turning tool with accurate positioning according to claim 1, characterized in that: An anti-collision pad (8) is provided above the electromagnet (703) inside the fixed shell (702), and telescopic rods (9) are fixed on both sides of the fixed shell (702) at the top of the sliding platform (701).

4. The accurately positioned multi-cylinder precision crankshaft turning tool according to claim 1, characterized in that: A fitting mechanism (10) is provided inside the limit block (706), and the fitting mechanism (10) includes a damping spring (1004). The damping spring (1004) is embedded inside the limit block (706), and the top end of the damping spring (1004) is connected to a connecting block (1001). A plurality of triangular plates (1002) are fixed above the connecting block (1001), and a contact roller (1003) is rotatably connected between two of the triangular plates (1002).

5. The accurately positioned multi-cylinder precision crankshaft turning tool according to claim 4, characterized in that: The connecting block (1001) forms an elastic structure with the damping spring (1004) and the limiting block (706), and the connecting block (1001) is fixedly connected to the triangular plate (1002).

6. The accurately positioned multi-cylinder precision crankshaft turning tool according to claim 1, characterized in that: A sliding groove (11) is provided on one side of the sliding platform (701) at the top of the supporting seat (6), and a slider (12) is slidably connected inside the sliding groove (11). A driving motor (13) is embedded on one side of the outer wall of the supporting seat (6), and a bidirectional threaded rod (14) is connected to the power output end of the driving motor (13).

7. The accurately positioned multi-cylinder precision crankshaft turning tool according to claim 6, characterized in that: The bidirectional threaded rod (14) is threadedly connected to the slider (12), and the slider (12) forms a sliding structure with the sliding platform (701) through the sliding groove (11).

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