CN118268612B - Magnetic field assisted device for cutting and magnetic field assisted cutting method - Google Patents

Abstract

The present invention relates to the field of cutting processing technology, in particular to a magnetic field auxiliary device for cutting processing and a magnetic field assisted cutting processing method. It comprises: a machine tool connection module, connecting a machine tool and a magnetic field generating module; a magnetic field generating module, comprising a mounting platform and two magnets located below the mounting platform, the two magnets are arranged relative to each other, the magnets are respectively arranged in a magnet clamp, and the magnet clamp is slidably connected to the mounting platform; a field intensity adjustment module, arranged on the mounting platform, comprising two guide rails respectively fixedly connected to the magnet clamp, the guide rails and the mounting platform can slide relative to each other, the two guide rails are connected by a reverse moving mechanism, and the two guide rails move in opposite directions at the same time. The magnetic field is introduced into the processing area, and high-precision adjustment of the magnetic field can be achieved. It is suitable for machine tools of different models and has a wide range of applications.

Description

Magnetic field assisted device for cutting and magnetic field assisted cutting method

Technical Field

The present invention relates to the technical field of cutting processing, in particular to a magnetic field auxiliary device for cutting processing and a magnetic field auxiliary cutting processing method.

Background Art

Some high-performance materials, such as maraging steel and titanium alloy, have been increasingly widely used in aerospace, marine development and other fields due to their good comprehensive mechanical properties. However, these materials are often difficult to cut and deform during cutting, and exhibit problems such as high cutting temperature, poor processing quality, and severe tool wear. They are typical difficult-to-cut materials. Therefore, directly cutting the above difficult-to-cut materials often cannot obtain an ideal processing surface.

In order to solve the problems existing in the processing of difficult-to-process materials, the introduction of external energy fields has become an effective means to improve processing performance and a research hotspot. Common field-assisted processing technologies include magnetic field-assisted processing, laser-assisted processing, ultrasonic vibration-assisted processing, etc. These technologies introduce external energy fields into the processing area to assist or directly remove materials and improve processing performance. Among them, magnetic field-assisted processing technology is a typical technology in field-assisted processing and the earliest energy field-assisted processing technology. It has a series of advantages such as simple operation, low cost, and a wide range of applications. It has expanded the application field of traditional processing methods and also improved processing efficiency and quality. It has broad application prospects in the field of material processing.

Magnetic field-assisted cutting technology is a typical field-assisted machining technology. It introduces a magnetic field into the cutting process and uses electromagnetic coils or permanent magnets to magnetize the tool, workpiece or cutting area. It uses the magnetic field to influence and optimize various aspects of the cutting process, including controlling chip formation, reducing friction, and improving tool stability. Existing magnetic field-assisted cutting technology usually installs a magnetic field auxiliary device on the machine tool. The excitation module usually uses a permanent magnet or electromagnetic coil to introduce the magnetic field into the machining area. However, the existing magnetic field auxiliary devices for cutting are often only suitable for a single machine tool, are not universal, and cannot be put into use on a large scale. In addition, the adjustment method is cumbersome, the adjustment accuracy is low, and high-precision adjustment of the magnetic field intensity cannot be achieved.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned defects of the prior art, and proposes a magnetic field assisted device and a magnetic field assisted cutting method for cutting processing, which introduces the magnetic field into the processing area and can achieve high-precision adjustment of the magnetic field. It is suitable for machine tools of different models and has a wide range of applications.

The technical solution of the present invention is: a magnetic field auxiliary device for cutting processing, which includes:

A machine tool connection module, connecting the machine tool and the magnetic field generating module;

The magnetic field generating module comprises a mounting platform and two magnets located below the mounting platform, the two magnets are arranged opposite to each other, the magnets are respectively arranged in a magnet fixture, and the magnet fixture is slidably connected to the mounting platform;

The field intensity adjustment module is arranged on the mounting platform and comprises two guide rails respectively fixedly connected to the magnetic clamps. The guide rails and the mounting platform can slide relative to each other. The two guide rails are connected by a reverse movement mechanism and move in opposite directions at the same time.

In the present invention, the machine tool connection module comprises a bottom plate, a side plate and a top plate, the bottom plate is fixedly connected to the machine tool, and one side of the bottom plate and the top plate are fixedly connected via the side plate; the magnetic field generating module is fixedly connected to the side plate.

A slide groove is provided in the mounting platform connected to the guide rail, and both sides of the guide rail are fixedly connected to the magnetic clamp under the mounting platform by bolts, and the bolts are slidably arranged in the slide groove;

When the bolts are tightened, the guide rail is firmly connected to the mounting platform.

The reverse movement mechanism comprises:

Racks respectively fixed on the guide rails on both sides and arranged along the length direction of the guide rails;

The two gear shafts are located above the rack, and the axial direction of the gear shaft is perpendicular to the moving direction of the guide rail. Counter-rotating gears and rack meshing gears are fixed on the gear shafts respectively. The two counter-rotating gears fixed on the two gear shafts are meshed with each other, and the rack meshing gears on the two gear shafts are respectively meshed with the racks on both sides, and the rotation directions of the two gear shafts are opposite.

Two supporting side plates are symmetrically mounted on the mounting platform, and two gear shafts are rotatably connected to the supporting side plates respectively;

One end of the gear shaft is fixedly connected to a knob arranged on the outer side of the supporting side plate, a bearing is fixed on the inner surface of the corresponding supporting side plate on the other side, and the other end of the gear shaft is rotatably connected to the bearing.

A ruler is fixed on the side of the installation platform.

The present invention also includes a method for cutting using the magnetic field assist device for cutting, which includes the following steps:

S1. Install the workpiece;

S2, clamp the tool, calibrate the tool and set the process parameters;

S3, installing a magnetic field auxiliary device, making the end face of the workpiece located at the center of the two magnets, adjusting the distance between the two magnets, and adjusting the magnetic field strength generated between the two magnets;

S4. Carry out cutting processing on the workpiece, and study the influence of the magnetic field on the turning process based on the processed workpiece.

In step S3, the tightness of the bolts connecting the guide rail and the magnet fixture is adjusted, and any knob is rotated to drive the gear shaft fixedly connected to the knob to rotate, and the rack meshing gear fixed on the gear shaft rotates, while the other gear shaft is driven to rotate in the opposite direction through the meshing between the reversely rotating gears, and the rack meshing gear on the gear shaft is driven to rotate in the opposite direction;

The meshing of the rack gear and the rack drives the racks on both sides to move in opposite directions, thereby increasing or decreasing the distance between the two magnets until the center between the two magnets reaches the required magnetic field strength, and then tighten the bolts to fix the position of the magnets.

The beneficial effects of the present invention are:

(1) Simple adjustment method and easy operation: The existing magnetic field auxiliary device has a complex adjustment method or no adjustment function, and cannot achieve the synchronous movement of the two magnetic poles to accurately control the field strength in the processing area; the adjustment method of this device is simple and easy to operate. By rotating the knob, the two magnets can be synchronously moved toward or away from each other to adjust the distance, thereby adjusting the magnitude of the magnetic field strength.

(2) High adjustment accuracy, which can achieve high-precision adjustment of magnetic field strength: Existing magnetic field auxiliary devices usually adopt manual adjustment, which has low adjustment accuracy and makes it difficult to accurately control the magnetic field strength in the processing area; the field intensity adjustment module of this device adopts gear rack transmission. Compared with manual adjustment, the gear rack transmission has higher transmission accuracy, and a scale is provided on the side of the mounting platform, which can achieve precise control of the distance between the two magnetic poles to adjust the magnetic field strength.

(3) The device is highly flexible: Existing magnetic field auxiliary devices are often designed for a specific machine tool and have a small scope of application. The magnetic field generating module and field intensity regulating module of this device are both modular and detachable in design, suitable for different machine tools, with a high degree of universality. For different models of machine tools, only the corresponding machine tool connection module needs to be designed to connect with them for use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the relative positions of the magnetic field assist device and the machine tool of the present invention;

FIG2 is a schematic diagram of the structure of the magnetic field assist device of the present invention;

FIG3 is a first partial schematic diagram of the magnetic field assist device of the present invention;

FIG. 4 is a second partial schematic diagram of the magnetic field assist device of the present invention.

In the figure: 1 machine tool connection module, 2 magnetic field generating module, 3 field intensity adjustment module, 4 machine tool worktable, 5 tool holder, 6 machine tool spindle, 7 magnet fixture, 8 mounting platform, 9 limit block, 10 top plate, 11 bearing, 12 gear shaft, 14 knob, 15 side plate, 16 ruler, 17 rack, 18 guide rail, 19 magnet, 20 connecting frame; 21 slide groove; 22 reverse rotating gear, 23 rack meshing gear.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

The magnetic field auxiliary device for cutting processing described in the present invention comprises a machine tool connection module 1, a magnetic field generating module 2 and a field intensity adjustment module 3. The field intensity adjustment module 3 is arranged on the magnetic field generating module 2, and the magnetic field generating module 2 is arranged on the machine tool connection module 1. The machine tool connection module 1 is connected to the machine tool, thereby realizing the connection between the device and the machine tool. As shown in FIG1 , the machine tool connection module 1 is arranged on the machine tool workbench 4, and the magnetic field generating module 2 is located on the outside of the tool rest 5 and the workpiece clamped on the machine tool spindle 6.

The machine tool connection module includes a connection frame, and the connection frame is fixedly connected to the machine tool workbench or the machine tool spindle. In this embodiment, the connection frame includes a side plate, a bottom plate and a top plate, and one side of the bottom plate and the top plate are fixedly connected through the side plate, and the bottom plate is fixedly connected to the machine tool workbench. The magnetic field generating module is connected to the side plate.

The magnetic field generating module includes a mounting platform 8, a magnet 19 and a magnet fixture 7. One side of the mounting platform 8 is fixedly connected to the side plate. Two magnet fixtures 7 are slidably provided on the bottom surface of the mounting platform 8. Magnets 19 are provided on the magnet fixtures 7 respectively. The two magnets 19 are arranged relative to each other, so that the area between the two magnets 19 can generate a magnetic field of a certain strength. The two magnets 19 are located on both sides of the workpiece to be processed, and the workpiece to be processed is located at the center position between the two magnets, so that the device can always provide a stable magnetic field for the processing area. When the position of the two magnet fixtures 7 is adjusted, the distance between the two corresponding magnets 19 changes, thereby adjusting the magnetic field strength at the center of the two magnets.

The field intensity adjustment module is arranged between the top plate and the mounting platform 8, and is connected to the magnet fixture 7, and the position of the magnet fixture is adjusted by the magnetic field adjustment module. The magnetic field adjustment module includes guide rails 18 fixedly connected to the two magnet fixtures, respectively, and the guide rails 18 are slidably connected to the top surface of the mounting platform 8. In this embodiment, two parallel slide grooves 21 are provided in the mounting platform corresponding to each guide rail 18 and along the reciprocating sliding direction of the guide rail 18, and the two sides of the guide rail are respectively fixedly connected to the magnet fixture 7 under the mounting platform by bolts, and the bolts pass through the slide grooves 21, and the bolts are slidably arranged in the slide grooves 21. When the bolts are tightened, the guide rails are fixedly connected to the mounting platform, thereby realizing the fixed connection between the magnet fixture and the mounting platform, and the position of the magnet fixture is fixed at this time. When it is necessary to adjust the magnetic field length between the two magnets, it is necessary to loosen the bolts and adjust the position of the guide rails 18. At this time, the bolts move back and forth in the slide grooves 21, and the bolts play a certain guiding role in the movement of the guide rails 18. Limit blocks 9 are respectively provided at both ends of the reciprocating movement of the guide rail 18 . The limit blocks 9 are fixed on the mounting platform 8 . The limit blocks 9 play a limiting role in the reciprocating movement of the mounting platform 8 .

The guide rails on both sides respectively fixedly connected to the magnetic clamps are connected via a reverse movement mechanism, that is, through the reverse movement mechanism, the two magnetic clamps and the corresponding magnets can move in opposite directions at the same time.

The reverse movement mechanism includes a rack 17 respectively fixed on each guide rail, and a gear meshing with each rack. Racks 17 are fixed in the middle of the top surface of the guide rail and along its length. Two support side plates 15 are symmetrically fixed on both sides of the top surface of the mounting platform. In this embodiment, the tops of the two support side plates 15 are fixedly connected by a support top plate 10, and the support top plate 10 is fixedly connected to the bottom surface of the top plate of the connecting frame. Two gear shafts 12 are connected between the two support side plates 15, and the axial direction of the gear shaft 12 is perpendicular to the reciprocating motion direction of the guide rail. Gears are respectively fixed on the gear shaft 12. The gear is located above the rack.

In this embodiment, the two ends of the two gear shafts 12 are rotatably connected to the supporting side plates 15 on both sides. One end of the gear shaft 12 is fixedly connected to the knob 14 arranged on the outer side of the supporting side plate, and a bearing 11 is fixedly provided on the inner side of the corresponding supporting side plate 9 on the other side, and the other end of the gear shaft 12 is rotatably connected to the bearing 11. When an external force is applied to the knob 14 to rotate the knob 14, the gear shaft 12 is driven to rotate accordingly, thereby driving the gear on the gear shaft to rotate.

Two gears are fixed on each gear shaft 12, namely, a reverse rotating gear 22 and a gear 23 meshing with the racks on both sides. The reverse rotating gear 22 is fixed in the middle of the gear shaft 12, and the reverse rotating gears 22 fixed on the two gear shafts mesh with each other, so the rotation directions of the two reverse rotating gears are opposite, and the corresponding rotation directions of the two gear shafts are opposite. At this time, the rotation directions between the two rack meshing gears are also opposite, so that the movement directions of the two racks 17 are opposite. The racks 17 are fixedly connected to the magnet clamps 7 through the guide rails 18, respectively, so that the magnets 19 on both sides are driven to move in opposite directions at the same time. During use, you only need to turn the knob 14 on one side according to the convenience of actual operation.

In this embodiment, the two gear shafts are respectively the first gear shaft and the second gear shaft. The first gear shaft is fixed with a first reverse rotating gear and a first gear, and the second gear shaft is fixed with a second reverse rotating gear and a second gear. The first reverse rotating gear and the second reverse rotating gear are meshed with each other, the first gear is meshed with a rack on one side guide rail, and the second gear is meshed with a rack on the corresponding other side guide rail.

Correspondingly, a ruler 16 is fixed on the side of the mounting platform 8, and the distance between the two magnets can be accurately controlled by the ruler 16, so as to achieve precise control of the magnetic field strength between the two magnets.

The present application also includes a method for performing cutting processing using a magnetic field-assisted cutting device, which specifically includes the following steps.

The first step is to install the workpiece.

Install the workpiece on the fixture and adjust the coaxiality so that the workpiece and the center line of the machine tool spindle 6 meet the coaxiality requirements.

The second step is to clamp the tool, align the tool and set the process parameters.

Clamp the tool on the tool holder 5 and tighten it with bolts. Complete the tool setting and set the process parameters, including speed, feed rate, and cutting depth.

The third step is to install the magnetic field auxiliary device so that the end face of the workpiece is located at the center of the two magnets. Adjust the tightness of the bolts connecting the guide rail 18 and the magnet fixture 7, rotate any knob 14, drive the gear shaft fixedly connected to the knob to rotate, and the rack meshing gear fixed on the gear shaft rotates. At the same time, through the meshing between the reverse rotating gears, the other gear shaft is driven to rotate in the opposite direction, and the rack meshing gear on the gear shaft is driven to rotate in the opposite direction.

The meshing of the rack gear and the rack drives the racks on both sides to move in opposite directions, thereby increasing or decreasing the distance between the two magnets, thereby adjusting the magnetic field strength generated between the two magnets.

Adjust the distance between the two magnets until the center between the two magnets reaches the required magnetic field strength, and tighten the bolts to fix the position of the magnets.

The fourth step is to carry out cutting processing of the workpiece.

The turning tool moves according to the preset processing mode to perform turning processing. The magnetic field auxiliary device always provides a stable magnetic field for the processing area. After the processing is completed, the machine tool spindle rotation is stopped, the processed workpiece is removed, and the influence of the magnetic field on the turning process is studied.

The magnetic field assisted device and magnetic field assisted cutting method for cutting provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims (3)

1. A magnetic field assist device for cutting machining, comprising:

The machine tool connecting module is used for connecting the machine tool and the magnetic field generating module;

the magnetic field generating module comprises a mounting platform and two magnets positioned below the mounting platform, wherein the two magnets are oppositely arranged, the magnets are respectively arranged in a magnet clamp, and the magnet clamp is in sliding connection with the mounting platform;

The field intensity adjusting module is arranged on the mounting platform and comprises two guide rails which are respectively and fixedly connected with the magnet clamp, the guide rails and the mounting platform can slide relatively, the two guide rails are connected through a reverse moving mechanism, and the two guide rails move in opposite directions at the same time;

The reverse movement mechanism includes:

Racks respectively fixed on the guide rails at two sides and arranged along the length direction of the guide rails;

The two gear shafts are positioned above the racks, the axial direction of the gear shafts is vertical to the moving direction of the guide rail, the gear shafts are respectively fixed with a reverse rotation gear and a rack meshing gear, the two reverse rotation gears respectively fixed on the two gear shafts are meshed with each other, the rack meshing gears on the two gear shafts are respectively meshed with the racks on the two sides, and the rotating directions of the two gear shafts are opposite;

The machine tool connecting module comprises a bottom plate, side plates and a top plate, wherein the bottom plate is fixedly connected with the machine tool, and one sides of the bottom plate and the top plate are fixedly connected through the side plates; the magnetic field generating module is fixedly connected with the side plate;

A sliding groove is arranged in the installation platform connected with the guide rail, two side edges of the guide rail are fixedly connected with the magnet clamp below the installation platform through bolts respectively, and the bolts are slidably arranged in the sliding groove;

When the bolts are screwed down, the guide rail is fixedly connected with the mounting platform;

Two support side plates are symmetrically arranged on the mounting platform, and two gear shafts are respectively and rotatably connected with the support side plates;

One end of the gear shaft is fixedly connected with a knob arranged at the outer side of the supporting side plate, a bearing is fixed on the inner side surface of the supporting side plate at the other corresponding side, and the other end of the gear shaft is rotationally connected with the bearing;

and a staff gauge is fixed at the side surface of the mounting platform.

2. A method of cutting by using the magnetic field assist apparatus for cutting according to claim 1, comprising the steps of:

S1, installing a workpiece;

S2, clamping a cutter, aligning the cutter and setting technological parameters;

s3, installing a magnetic field auxiliary device, enabling the end face of the workpiece to be located at the center of the two magnets, adjusting the distance between the two magnets, and adjusting the intensity of a magnetic field generated between the two magnets;

S4, cutting machining of the workpiece is carried out, and influence study of the magnetic field on the turning process is carried out according to the machined workpiece.

3. A magnetic field assisted cutting method as defined in claim 2 wherein,

In the step S3, the tightness of a bolt connecting the guide rail and the magnet clamp is adjusted, any knob is rotated to drive a gear shaft fixedly connected with the knob to rotate, and a rack meshing gear fixed on the gear shaft is rotated and drives the other gear shaft to reversely rotate through meshing between reverse rotating gears and drives the rack meshing gear on the gear shaft to reversely rotate;

The racks on two sides are driven to move in opposite directions through the mutual engagement between the rack engagement gears and the racks, so that the distance between the two magnets is increased or decreased until the center between the two magnets reaches the required magnetic field strength, and the bolts are screwed to fix the positions of the magnets.