CN214168041U

CN214168041U - Device for single-station laser quenching and tempering crankshaft

Info

Publication number: CN214168041U
Application number: CN202023293096.5U
Authority: CN
Inventors: 孟宪凯; 周建忠; 王匀; 陈杰; 王阿军
Original assignee: Jiangsu Gangyang Co Ltd
Current assignee: Jiangsu Gangyang Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-10
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a device of simplex position laser quenching tempering processing bent axle contains a computer and a laser instrument, computer control the laser instrument, the low reaches of laser instrument be equipped with a diffraction beam splitter, the low reaches of diffraction beam splitter be equipped with a speculum, the low reaches of speculum be equipped with a combination lens, computer and a programmable controller and a card disk controller all be connected, the bent axle is fixed in on the lead screw, wherein, the computer with the profile signal input of bent axle to card disk controller, card disk controller control lead screw feed and gyration, programmable controller control according to the profile signal of bent axle combination lens, and make the focus of combination lens obtain the adjustment. The utility model discloses can realize quenching and tempering technology on the single-station, save the occupation of land position greatly, improve machining efficiency.

Description

Device for single-station laser quenching and tempering crankshaft

Technical Field

The utility model relates to a quenching and tempering process, in particular to a method and a device for processing a crankshaft by single-station laser quenching and tempering, which can be applied to the surface strengthening processing of the crankshaft of an engine.

Background

Quenching is a heat treatment process in which steel is heated to above a critical temperature, kept warm for a certain time, and then cooled at a cooling rate greater than the critical cooling rate, thereby obtaining an unbalanced structure mainly composed of martensite. Tempering is generally carried out immediately after quenching, and the main purpose is to eliminate residual stress generated during quenching of the workpiece and prevent deformation and cracking. For example, the patent of chinese utility model publication CN 109576459 a proposes a continuous quenching-tempering apparatus, that is, a quenching furnace, a quenching bath and a tempering furnace are connected by a transmission belt to realize continuous quenching and tempering, which is characterized in that the continuous heating-quenching-tempering production of workpieces can be realized under reliable transmission and protection conditions, and the production efficiency is high, but the quenching and tempering of the conventional heating furnace has the following defects, such as the requirement of cooling medium, deformation of workpieces, relatively shallow hardened layers, etc.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems in the prior art, thereby providing a method and a device for processing a crankshaft by single-station laser quenching and tempering.

The above technical problem of the present invention can be solved by the following technical solutions:

a single-station laser quenching and tempering device for processing a crankshaft comprises a computer and a laser, wherein the computer controls the laser, a diffracted beam splitter is arranged at the downstream of the laser, a reflector is arranged at the downstream of the diffracted beam splitter, a combined lens is arranged at the downstream of the reflector, the computer is connected with a programmable controller and a chuck controller, the crankshaft is fixed on a screw rod,

wherein the content of the first and second substances,

the computer inputs the contour signal of the crankshaft to the chuck controller, the chuck controller controls the feed and rotation of the screw rod,

the programmable controller controls the combined lens according to the profile signal of the crankshaft, and enables the focal length of the combined lens to be adjusted.

As the preferred embodiment of the present invention, the laser is a high power optical fiber coupled semiconductor laser.

A method for processing a crankshaft by using the single-station laser quenching and tempering device for processing the crankshaft comprises the following steps:

step S1, fixing the crankshaft on the three-jaw chuck, so that the rotation center of the three-jaw chuck is completely overlapped with the rotation center of the crankshaft;

step S2, setting parameters of the laser, opening the laser and the diffraction beam splitter, dividing the laser beams into a plurality of groups, adjusting the energy of each laser beam, adjusting the focal length of each laser beam by the combined lens, and feeding and rotating the lead screw and the three-jaw chuck according to a preset path until the processing is finished;

step S3, after the processing is finished, the crankshaft is unloaded after the crankshaft is completely cooled;

step S4, turn off the laser, diffract the beam splitter, and computer.

The method and the device for processing the crankshaft by the single-station laser quenching and tempering have the following advantages: 1. the utility model can realize the quenching and tempering processes on a single station, greatly save the occupied area and improve the processing efficiency; 2. the utility model adopts laser quenching and tempering, has high power density and fast cooling speed, does not need cooling medium, and is a clean and high-efficiency new process; 3. the utility model discloses can weave into programmable controller with treating processing bent axle appearance profile, the laser focus changes according to bent axle appearance profile.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the single-station laser quenching and tempering device for processing the crankshaft of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1, the single-station laser quenching and tempering device for crankshaft processing comprises a computer 11 and a laser 1, the computer 11 controls the laser 1, a diffracted beam splitter 2 is arranged at the downstream of the laser 1, a reflector 4 is arranged at the downstream of the diffracted beam splitter 2, a combined lens 5 is arranged at the downstream of the reflector 4, the computer 11 is connected with a programmable controller 9 and a chuck controller 10, the crankshaft 7 is fixed on a screw 8,

wherein the content of the first and second substances,

the computer 11 inputs the contour signal of the crankshaft 7 to the chuck controller 10, the chuck controller 10 controls the feed and rotation of the screw 8,

the programmable controller 9 controls the combined lens 5 according to the profile signal of the crank 7, and causes the focal length of the combined lens 5 to be adjusted.

It should be noted that the laser 1 is a high-power fiber-coupled semiconductor laser, and adopts a high-power fiber-coupled semiconductor laser, the maximum output power is 8000W, the minimum laser spot is 1mm, and the wavelength range is 900nm to 1030 nm.

The method for processing the crankshaft by using the device comprises the following steps:

step S1, fixing the crankshaft 7 on the three-jaw chuck 6 so that the rotation center of the three-jaw chuck 6 completely coincides with the rotation center of the crankshaft 7;

and step S2, setting parameters of the laser 1, opening the laser 1 and the diffraction beam splitter 2, dividing the laser beams into a plurality of groups, and adjusting the energy of each laser beam. The focusing of each laser beam is adjusted by the combined lens 5, and the lead screw 8 and the three-jaw chuck 6 are fed and rotated according to a predetermined path until the end of the processing. In the initial state, the diffraction beam splitter 2 equally divides the energy into two groups of laser beams, and performs laser quenching on the rightmost crankshaft journal and main journal. The laser focal length is adjusted according to the rotating positions of the crankshaft journal and the main journal. After laser quenching, the energy distributed by the diffraction beam splitter 2 is adjusted, and the same crankshaft journal and main journal are subjected to laser tempering. After laser quenching and tempering are carried out on the same crankshaft journal and the main journal, the lead screw rotates, the crankshaft feeds, and the next pair of crankshaft journal and the main journal are subjected to laser quenching and tempering;

step S3, after the processing is finished, the crankshaft 7 is dismounted after the crankshaft 7 is completely cooled;

step S4, turn off the laser 1, the diffracted beam splitter 2, and the computer 11.

Taking a 40Cr crankshaft as an example, after machining, the depth of a hardening layer is estimated to be more than or equal to 0.6mm, and the machining hardness is estimated to be more than or equal to 53 HRC.

The utility model utilizes laser as heat source to carry out laser quenching and tempering on the crankshaft, on one hand, the laser quenching and tempering do not need cooling medium, thus being easy to realize automation, high in power density, fast in cooling speed, clean and energy-saving; on the other hand, the laser moving path can be specifically designed according to the profile of the crankshaft, and different journals can be simultaneously subjected to quenching and tempering treatment.

Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A single-station laser quenching and tempering device for processing a crankshaft comprises a computer (11) and a laser (1), wherein the computer (11) controls the laser (1), the device is characterized in that a diffracted beam splitter (2) is arranged at the downstream of the laser (1), a reflecting mirror (4) is arranged at the downstream of the diffracted beam splitter (2), a combined lens (5) is arranged at the downstream of the reflecting mirror (4), the computer (11) is connected with a programmable controller (9) and a chuck controller (10), the crankshaft (7) is fixed on a screw rod (8),

wherein the content of the first and second substances,

the computer (11) inputs the contour signal of the crankshaft (7) into the card controller (10), the card controller (10) controls the feed and the rotation of the screw rod (8),

the programmable controller (9) controls the combined lens (5) according to the profile signal of the crank shaft (7) and enables the focal length of the combined lens (5) to be adjusted.

2. The single-station laser quenching and tempering crankshaft machining device according to claim 1, wherein said laser (1) is a high-power fiber-coupled semiconductor laser.