Free edge grinding device and free edge grinding equipment

Abstract

The present invention discloses a free edge grinding device and a free edge grinding equipment, which relate to the field of shipbuilding technology, wherein the free edge grinding device comprises: a fixture, a tool assembly and a driving motor, wherein the tool assembly is installed on the fixture, comprises a movable shaft extending along a first direction, and two cutter discs fixedly installed on the movable shaft, wherein the two cutter discs are arranged at intervals in the first direction, and a supporting wheel is arranged between the two cutter discs, wherein a blade is arranged on the side of the cutter disc close to the supporting wheel; the driving motor is installed on the fixture, and is drivingly connected to the tool assembly to drive the cutter disc to rotate along the axis of the first direction, and the blades of the two cutter discs close to the supporting wheel are used to grind two edges of the workpiece to be processed in the first direction. The technical solution provided by the present invention drives the double cutter discs through the driving motor to realize simultaneous processing of the two edges of the workpiece to be processed, thereby realizing a breakthrough from manual to equipment chamfering operation, and simultaneously improving the efficiency of chamfering processing.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and in particular to a free edge grinding device and a free edge grinding equipment. Background Art

[0002] After the workpiece is cut by a steel plate cutting machine, burrs or sharp edges will usually appear on the edges. In order to prevent the paint from cracking at the edges after the subsequent spraying process, which will cause the workpiece to be unable to resist corrosion, the edges of the workpiece are generally chamfered to prevent the paint from cracking at the edges and extend the maintenance life of marine parts.

[0003] At present, most workpiece chamfering operations rely on manual processing, and are limited by the immaturity of machine-used free edge grinding devices, resulting in low overall workpiece processing efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a free edge grinding device and a free edge grinding equipment, aiming to improve the efficiency of chamfering of workpieces to be processed.

[0005] To achieve the above-mentioned purpose, the free edge grinding device proposed in the present invention is used for processing two opposite edges of the free edge of a workpiece to be processed, and the free edge grinding device comprises: a fixture, a tool assembly and a driving motor; the tool assembly is installed on the fixture, and the tool assembly comprises a movable shaft extending along a first direction, and two cutter discs fixedly installed on the movable shaft, the two cutter discs are arranged at intervals in the first direction, and a supporting wheel is arranged between the two cutter discs, wherein a blade is arranged on a side of the cutter disc close to the supporting wheel; the driving motor is installed on the fixture and is drivingly connected to the tool assembly to drive the cutter disc to rotate along the axis of the first direction, and the blades of the two cutter discs close to the side of the supporting wheel are used for grinding the two edges of the workpiece to be processed located in the first direction.

[0006] In one embodiment, the tool assembly comprises:

[0007] The radial side surface of the supporting wheel is used for the workpiece to be processed to abut against in a direction perpendicular to the first direction;

[0008] A pressure plate is sleeved on the movable shaft and is located on a side of the cutter disc close to the drive motor, and is used for the workpiece to be processed to abut against it in a first direction.

[0009] In one embodiment, the tool assembly further comprises bearings, and the bearings are arranged between the supporting wheel and the movable shaft, and between the pressure plate and the movable shaft.

[0010] In one embodiment, the supporting wheel is detachably mounted on the movable shaft, a plurality of the supporting wheels are provided, and the thickness of the plurality of supporting wheels along the first direction gradually increases; or,

[0011] The tool assembly also includes a plurality of gaskets which are detachably mounted on the movable shaft and are located between the two tool discs.

[0012] In one embodiment, the cutter disc is provided with a plurality of blades at intervals along the circumferential direction, and the blade is provided with a plurality of cutting edges at intervals along the circumferential direction.

[0013] In one embodiment, the tool assembly further includes a connecting shaft, which extends along a first direction, and one end of the connecting shaft in the first direction is detachably connected to the clamp; and the other end is connected to the movable shaft.

[0014] In one embodiment, the tool assembly includes a first elastic member, two ends of which have a movable stroke that approaches or moves away from each other, and the two ends of the first elastic member are respectively connected to the connecting shaft and the movable shaft so that the movable shaft has a movable stroke along its axial direction.

[0015] In one embodiment, the free edge grinding device further comprises a mounting frame and an adjustment assembly, wherein the adjustment assembly comprises:

[0016] A first connecting member is rotatably mounted on the mounting frame along the axis of the second direction;

[0017] The second connecting member is configured such that the clamp is rotatably mounted on the second connecting member along the axis of the third direction.

[0018] In one embodiment, the mounting frame has a mounting hole extending through the first direction, the fixture passes through the mounting hole, and the free edge grinding device further includes an elastic component, the elastic component includes a plurality of second elastic members, the plurality of second elastic members extend radially along the mounting hole, and are spaced apart along the circumference of the mounting hole;

[0019] One end of the second elastic member is fixedly connected to the mounting hole, and the other end has a movable stroke along the radial direction of the mounting hole and is used to abut against the clamp.

[0020] The present invention further provides a free edge grinding device, the free edge grinding device comprising a free edge grinding device, and the free edge grinding device further comprising:

[0021] A mechanical arm or a gantry machine tool having a connecting portion, wherein the connecting portion is fixedly connected to the mounting frame;

[0022] A visual camera, fixedly mounted on the robotic arm or the gantry machine tool, for scanning the workpiece to be processed;

[0023] Wherein, the free edge grinding device includes: a fixture, a tool assembly and a driving motor; the tool assembly is installed on the fixture, the tool assembly includes a movable shaft extending along a first direction, and two tool discs fixedly installed on the movable shaft, the two tool discs are arranged at intervals in the first direction, and a supporting wheel is arranged between the two tool discs, wherein a blade is arranged on the side of the tool disc close to the supporting wheel; the driving motor is installed on the fixture and is connected to the tool assembly to drive the tool disc to rotate along the axis of the first direction, and the blades of the two tool discs close to the side of the supporting wheel are used for grinding two edges of the workpiece to be processed located in the first direction.

[0024] The technical solution of the present invention drives the double cutter discs through a driving motor to achieve simultaneous processing of two edges of a workpiece, thereby achieving a breakthrough in chamfering operations from manual to equipment, and simultaneously improving the efficiency of chamfering processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an embodiment of a free edge grinding device provided by the present invention;

[0027] Figure 2 for Figure 1 Partial structural diagram of the free edge grinding device;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of a tool assembly of a free edge grinding device;

[0029] Figure 4 for Figure 3 Partial structural diagram of the tool assembly.

[0030] Description of Figure Numbers:

[0031] 100. Free-edge grinding device; 1. Clamp; 2. Tool assembly; 21. Movable shaft; 22. Cutter disc; 221. Blade; 2211. Blade; 23. Support wheel; 24. Pressure plate; 25. Bearing; 26. Connecting shaft; 3. Drive motor; 4. Mounting frame; 41. Mounting hole; 5. Adjustment assembly; 51. First connecting member; 52. Second connecting member; 6. Elastic assembly; 61. Second elastic member.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] At present, most workpiece chamfering operations rely on manual processing, and are limited by the immaturity of free edge grinding devices, resulting in low overall workpiece processing efficiency.

[0037] The invention provides a free edge grinding device.

[0038] See also Figure 1 and Figure 4In one embodiment of the present invention, the free edge grinding device 100 includes: a tool assembly 2 is installed on the fixture 1, the tool assembly 2 includes a movable shaft 21 extending along a first direction, and two cutter discs 22 fixedly installed on the movable shaft 21, the two cutter discs 22 are arranged at intervals in the first direction, and a supporting wheel 23 is arranged between the two cutter discs 22, wherein a blade 2211 is arranged on a side of the cutter disc 22 close to the supporting wheel 23; a driving motor 3 is installed on the fixture 1, and is drivingly connected to the tool assembly 2 to drive the cutter disc 22 to rotate along the axis of the first direction, and the blades 2211 of the two cutter discs 22 close to the side of the supporting wheel 23 are used to grind two edges of the workpiece to be processed located in the first direction.

[0039] In the technical solution of the present invention, the tool assembly 2 has a movable shaft 21, a cutter disc 22 is sleeved on the movable shaft 21, and a blade 2211 is provided on the side of the cutter disc 22 close to the wheel 23. During processing, the driving motor 3 drives the movable shaft 21 to rotate along the first direction axis, and the cutter disc 22 rotates along the first direction axis. The blade 2211 is used to contact the edge of the workpiece to be processed and grind it. In order to grind two edges of the workpiece to be processed (such as two edges opposite to each other in the first direction on one side of the plate body) at the same time. The movable shaft 21 is sleeved with two cutter discs 22 and a supporting wheel 23, and the supporting wheel 23 is arranged between the two cutter discs 22, so that the two cutter discs 22 are arranged at intervals along the first direction, and the workpiece to be processed is placed on the radial side of the cutter disc 22 and between the two cutter discs 22. The blades 2211 of the two cutter discs 22 correspond to the two opposite edges of the workpiece to be processed in the first direction. At this time, the driving motor 3 drives the movable shaft 21 to rotate along the axis of the first direction, and the two cutter discs 22 grind the two opposite edges of the workpiece to be processed in the first direction at the same time. The drive motor 3 drives the cutter disc 22 to rotate for grinding, which replaces manual work to improve the processing efficiency, and the two edges of the workpiece to be processed are grinded by rotating the two cutter discs 22 at the same time, further improving the efficiency of grinding the workpiece to be processed.

[0040] In order to ensure the grinding position and grinding amount of the workpiece by the blade 221 to ensure the processing accuracy, the tool assembly 2 includes: a wheel 23 and a pressure plate 24. After the cutter disc 22 completes the grinding process of the workpiece, the radial outer side surface of the wheel 23 abuts against the workpiece, and the workpiece and the movable shaft 21 cannot get closer in this direction, so the cutter disc 22 cannot further grind the workpiece, thereby ensuring the processing amount and processing accuracy. In order to make the blade 2211 of one cutter disc 22 correspond to one side edge of the workpiece to be processed, the blade 2211 of another cutter disc 22 corresponds to the other side edge of the workpiece to be processed, so as to ensure the accuracy of the grinding position. The pressure plate 24 is sleeved on the movable shaft 21 and is located on the side of the blade 221 close to the drive motor 3. The pressure plate 24 is used for the workpiece to be processed to abut in the first direction. When abutting, the two blades 2211 correspond to the two side edges of the workpiece to be processed in the first direction respectively. Thereby ensuring the reliability of the grinding position.

[0041] Since the driving motor 3 drives the movable shaft 21 to rotate, and the supporting wheel 23 and the pressure plate 24 are arranged on the movable shaft 21, the supporting wheel 23 and the pressure plate 24 will rotate relative to the workpiece to be processed, and will also generate friction with the workpiece to be processed. In order to reduce the wear between the supporting wheel 23, the pressure plate 24 and the workpiece to be processed, in one embodiment, the tool assembly 2 also includes a bearing 25, and the bearing 25 is arranged between the supporting wheel 23 and the movable shaft 21, and between the pressure plate 24 and the movable shaft 21. When the movable shaft 21 rotates N circles, due to the existence of the bearing 25 and the friction between the supporting wheel 23 and the pressure plate 24 and the workpiece to be processed, the number of circles that the supporting wheel 23 and the pressure plate 24 rotate relative to the workpiece to be processed is much less than N circles, thereby reducing the wear on the supporting wheel 23, the pressure plate 24, and the workpiece to be processed.

[0042] Since the thickness of the workpiece in the first direction is different, it is necessary to adjust the spacing between the two blades 221 in the first direction (that is, the spacing between the two cutter discs 22 in the first direction needs to be adjusted accordingly). In order to adjust the spacing, the supporting wheel 23 is detachably mounted on the movable shaft 21. The supporting wheels 23 are provided in plurality, and the thickness of the plurality of supporting wheels 23 along the first direction gradually increases, and one of the supporting wheels 23 is used to be mounted on the movable shaft 21. The supporting wheels 23 of different thicknesses are replaced to correspond to the different spacing between the two blades 221 in the first direction. Alternatively, a gasket is added between the two cutter discs 22 to adjust the spacing between the two cutter discs 22 in the first direction.

[0043] In order to improve the processing efficiency and slow down the wear rate of a single blade 221 so that the blade 221 has a longer service life, the cutter disc 22 is provided with a plurality of blades 221 at intervals along the circumference. When the cutter disc 22 rotates, the plurality of blades 221 can be polished at the same time, thereby improving the processing efficiency of the cutter disc 22. The simultaneous provision of a plurality of blades 221 to process the same edge will also reduce the wear of a single blade 221. Generally, the cutter disc 22 is provided with 3 to 4 blades 221. When the blade 221's edge 221 is worn, it is necessary to change the installation angle so that the other blades 2211 on the blade 221 can be polished, or the blade 221 can be replaced. Therefore, the installation method of the blade 221 is detachable. The blade 221 is provided with a plurality of blades 2211 at intervals along the circumference. Generally, one blade 221 is provided with 4 blades 2211.

[0044] In order to process chamfers of different sizes and to process workpieces of different thicknesses, a plurality of tool assemblies 2 are provided, and the tool assembly 2 further comprises a connecting shaft 26, which extends along a first direction, and one end of the connecting shaft 26 in the first direction is detachably connected to the fixture 1, and the other end is connected to the movable shaft 21. By replacing different tool assemblies 2, desired chamfers can be processed for different workpieces.

[0045] In order to ensure that the workpiece to be processed can be stably moved against the supporting wheel 23 and the pressure plate 24, especially under the premise that the system accuracy cannot be achieved at a high enough accuracy, it is difficult to achieve that the pressure between the workpiece to be processed and the supporting wheel 23 or the pressure plate 24 is exactly 0 when it is close to the edge. If the movable shaft 21 is rigidly connected to other parts, then when subjected to pressure, the workpiece, the supporting wheel 23 and the pressure plate 24 may be deformed. Therefore, the function required by the device is that the movable shaft 21 drives the cutter disc 22 to float axially and radially, which is mainly to ensure that the top (first direction) and side guide (second direction) of the workpiece to be processed can be stably moved against the edge.

[0046] Specifically, in order to enable the movable shaft 21 and the cutter disc 22 to float along their own axial direction, in one embodiment, the tool assembly 2 includes a first elastic member, and the two ends of the first elastic member have a movable stroke that approaches or moves away from each other, and the two ends of the first elastic member are respectively connected to the connecting shaft 26 and the movable shaft 22, so that the movable shaft 22 has a movable stroke along its axial direction. In order to ensure that the workpiece to be processed is close to the pressure plate 24, it is necessary to make the pressure plate 24 subject to a certain pressure, and the corresponding movable shaft 21 and the cutter disc 22 float in their own axial direction under the action of the first elastic member. The first elastic member can be set as a buffer, a spring, a telescopic rod and other structures.

[0047] Specifically, in order to achieve the floating of the movable shaft 21 in the radial direction, the radial direction of the movable shaft 21 is multi-directional, so in order to achieve this effect, in one embodiment, the free edge grinding device 100 further includes a mounting frame 4 and an adjustment assembly 5, and the adjustment assembly 5 includes a first connecting member 51 and a second connecting member 52; the first connecting member 51 is rotatably mounted on the mounting frame 4 along the axis of the second direction; the second connecting member 52 is rotatably mounted on the clamp 1 along the axis of the third direction. When the movable shaft 21 floats in the radial direction, the adjustment assembly 5 rotates accordingly to prevent the tool assembly 2 from deforming.

[0048] When the workpiece abuts the support wheel 23, after the adjustment component 5 rotates accordingly, the workpiece abuts against the support wheel 23 and the pressure is 0. In order to ensure stable fit, a certain pressure needs to exist between the two. In addition, in order to restore the position of the tool assembly 2 after the workpiece abuts against the support wheel 23, in one embodiment, the mounting frame 4 has a mounting hole 41 that passes through in the first direction, and the fixture 1 is provided with the mounting hole 41. The free edge grinding device 100 also includes an elastic component 6, and the elastic component 6 includes a plurality of second elastic members 61. The second elastic members 61 extend radially along the mounting hole 41 and are arranged at intervals along the circumference of the mounting hole 41. One end of the second elastic member 61 is fixedly connected to the mounting hole 41, and the other end has a movable stroke along the radial direction of the mounting hole 41, and is used to abut against the fixture. In this way, the movable shaft 21 drives the cutter disc 22 to float radially. The second elastic member 61 can be specifically set as a buffer or a spring.

[0049] The present invention also proposes a free edge grinding device, which includes a free edge grinding device 100, a robotic arm, and a visual camera. The specific structure of the free edge grinding device 100 refers to the above embodiment. Since the free edge grinding device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The free edge grinding device includes the free edge grinding device 100, and the free edge grinding device also includes:

[0050] A mechanical arm having a connecting portion, wherein the connecting portion is fixedly connected to the mounting frame 4;

[0051] A visual camera, fixedly mounted on the robotic arm, for scanning the workpiece to be processed;

[0052] The free edge grinding device 100 includes: a tool assembly 2 installed on the fixture 1, the tool assembly 2 includes a movable shaft 21 extending along a first direction, and two tool discs 22 fixedly installed on the movable shaft 21, the two tool discs 22 are arranged at intervals in the first direction, and a supporting wheel 23 is arranged between the two tool discs 22, wherein a blade 2211 is arranged on the side of the tool disc 22 close to the supporting wheel 23; a driving motor 3 is installed on the fixture 1, and is drivingly connected to the tool assembly 2 to drive the tool disc 22 to rotate along the axis of the first direction, and the blades 2211 of the two tool discs 22 close to the side of the supporting wheel 23 are used to grind two edges of the workpiece to be processed located in the first direction.

[0053] The free edge grinding device finds the side of the workpiece to be processed through a visual camera, so that the robotic arm moves the free edge grinding device to the corresponding position, and determines the grinding path according to the extension direction of the side of the workpiece to be processed. The free edge grinding device 100 is driven by the robotic arm to move along the grinding path to process the two edges of the side of the workpiece to be processed.

[0054] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A free edge grinding device, used for processing two opposite edges of a free edge of a workpiece, characterized in that: include: Fixtures; A tool assembly is mounted on the fixture, the tool assembly comprises a movable shaft extending in a first direction, and two tool discs fixedly mounted on the movable shaft, the two tool discs are spaced apart in the first direction, and a supporting wheel is arranged between the two tool discs, wherein a blade is arranged on a side of the tool disc close to the supporting wheel; A driving motor is installed on the fixture and is connected to the tool assembly to drive the cutter disc to rotate along the axis of the first direction. The blades of the two cutter discs close to the wheel side are used to grind the two edges of the workpiece to be processed in the first direction.

2. The free edge grinding device according to claim 1, characterized in that: The tool assembly comprises: The radial side surface of the supporting wheel is used for the workpiece to be processed to abut against in a direction perpendicular to the first direction; A pressure plate is sleeved on the movable shaft and is located on a side of the cutter disc close to the drive motor, and is used for the workpiece to be processed to abut against it in a first direction.

3. The free edge grinding device according to claim 2, characterized in that: The tool assembly also includes bearings, and the bearings are arranged between the supporting wheel and the movable shaft, and between the pressure plate and the movable shaft.

4. The free edge grinding device according to claim 2, characterized in that: The supporting wheel is detachably mounted on the movable shaft, and a plurality of the supporting wheels are provided, and the thickness of the plurality of supporting wheels along the first direction gradually increases; or, The tool assembly also includes a plurality of gaskets which are detachably mounted on the movable shaft and are located between the two tool discs.

5. The free edge grinding device according to claim 1, characterized in that: The cutter disc is provided with a plurality of blades at intervals along the circumferential direction, and the blade is provided with a plurality of cutting edges at intervals along the circumferential direction.

6. The free edge grinding device according to claim 1, characterized in that: The tool assembly also includes a connecting shaft, which extends along a first direction. One end of the connecting shaft in the first direction is detachably connected to the clamp; and the other end is connected to the movable shaft.

7. The free edge grinding device according to claim 6, characterized in that: The tool assembly includes a first elastic member, two ends of which have a movable stroke approaching or moving away from each other, and the two ends of the first elastic member are respectively connected to the connecting shaft and the movable shaft so that the movable shaft has a movable stroke along its axial direction.

8. The free edge grinding device according to claim 1, characterized in that: The free edge grinding device also includes a mounting frame and an adjustment assembly, and the adjustment assembly includes: A first connecting member is rotatably mounted on the mounting frame along the axis of the second direction; The second connecting member is configured such that the clamp is rotatably mounted on the second connecting member along the axis of the third direction.

9. The free edge grinding device according to claim 8, characterized in that: The mounting frame has a mounting hole extending in a first direction, the fixture passes through the mounting hole, the free edge grinding device further comprises an elastic component, the elastic component comprises a plurality of second elastic members, the plurality of second elastic members extend radially along the mounting hole, and are arranged at intervals along the circumference of the mounting hole; One end of the second elastic member is fixedly connected to the mounting hole, and the other end has a movable stroke along the radial direction of the mounting hole and is used to abut against the clamp.

10. A free edge grinding device, characterized in that: The free edge grinding device comprises the free edge grinding device according to any one of claims 1 to 9, wherein the free edge grinding device further comprises: A mechanical arm or a gantry machine tool having a connecting portion, wherein the connecting portion is fixedly connected to the mounting frame; A visual camera is fixedly mounted on the robotic arm or the gantry machine tool and is used for scanning the workpiece to be processed.

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