CN103635294B - Cutting machine and the emergency stop method of motor - Google Patents

Abstract

First, second and the 3rd sensor 11, 12 and 13 launch electromagnetic wave, receive by first, second and the 3rd sensor 11, 12 and 13 launch and the electromagnetic wave that reflected by object 9 or by have received by first, second and the 3rd sensor 11, the electromagnetic wave that the object 9 of 12 and 13 electromagnetic waves launched is launched, and determine the distance between their own and object 9 respectively according to the time difference of transmitting and reception electromagnetic wave, control part 3 according to each sensor 11, distance between 12 and 13 and object 9 determines the three-dimensional coordinate of object 9, determine whether the three-dimensional coordinate of object 9 fall in predetermined region, and when the three-dimensional coordinate of object 9 falls in this region, stop motor.

Description

Cutting machine and the emergency stop method of motor

Technical field

The present invention relates to drive the cutting machine of saw blade for cutting workpiece and the horse in this cutting machine by motor The emergency stop method reached.

Background technology

Japanese patent application pending trial publication number No.2010-023186 (patent documentation) described below discloses one and cuts Cutting mill, it uses saw blade cutting to be placed material to be cut on the table, and it determines expression operation in image Whether the quantity of the pixel of the hands of person has exceeded predetermined threshold value to stop the rotation of saw blade.

Reference listing

Patent documentation

PTL1: the Japanese patent application of pending trial Publication No. No.2010-023186.

Summary of the invention

Technical problem

In the technology described in patent document 1, it is requisite for shooting and process image, so in the letter of structure Change and image processing speed aspect exists the space improved.

One preferred purpose of the present invention is to provide a kind of cutting machine, and it is no need to the emergent stopping of motor and claps Take the photograph and process image, not being the most complicated when setting the scope for detecting object, and in terms of image processing techniques Process be quick, and the method that the emergent stopping of a kind of motor is provided.

The solution of problem

One aspect of the present invention is cutting machine.This cutting machine has the saw of the workpiece that cutting is supported on carriage portion Bar, and for driving the motor of saw blade, described cutting machine comprises determining that the coordinate of the coordinate of object determines part；And stop Point, it stops the rotation of motor by described coordinate being determined when coordinate that part determines meets predetermined condition.

This coordinate determines that part includes at least one sensor, the position of its detection object, and described sensor is permissible At least substantially it is positioned on the extension line of saw blade.

At least one sensor can be positioned on the both sides of described saw blade.

Coordinate determines that part can measure the distance from multiple different positions to described object, with true according to measurement result The coordinate of fixed described object.

Coordinate determines that part can have the multiple Sensor sections being arranged in diverse location.Each Sensor section described can To launch electromagnetic wave, and receive the electromagnetic wave launched from described Sensor section and reflected by described object, or from connecing Receive the electromagnetic wave of the object emission of the electromagnetic wave launched by described Sensor section.

Coordinate determines that part can have and launches the emitting portion of electromagnetic wave and multiple Sensor section, and it receives from described Penetrate the electromagnetic wave that part is launched and reflected by object, or from have received the object emission of the electromagnetic wave launched from emitting portion Electromagnetic wave.Each Sensor section described is configured in mutually different position.

Object can be provided in the electromagnetic-wave reflector on the glove on hand or worn of workman or IC mark by workman Sign.

Each Sensor section can determine described Sensor section according to the electromagnetic wave received by described Sensor section And the distance between described object.

Coordinate determines that part may determine that the three-dimensional coordinate of object.

When determining that by coordinate the coordinate that part determines is in predetermined region, stop section can stop the rotation of motor Turn.

Alarm part can be set further, when the rotation at motor is stopped part stopping, or before this stopping Or afterwards, alarm part produces alarm.

Saw blade can be circular saw blade, and it is maintained at upper from described carriage portion of a part of circumferential edges of described saw blade The state that face is prominent, from there through make workpiece on carriage portion on move, described workpiece is cut by saw blade.

Coordinate determines that part can have sensor, its on carriage portion on be arranged in the both sides of described saw blade On.

Another aspect of the present invention is the emergency stop method of motor.The method is the emergent stopping of the motor in cutting machine Method, cutting machine includes the saw blade cutting the workpiece being supported on carriage portion and the motor driving saw blade, described emergent stopping Method includes step: launched electromagnetic wave by first sensor part, and receives and launched and by thing by described first sensor The electromagnetic wave of body reflection or the electromagnetic wave of the object emission by the electromagnetic wave that have received by the transmitting of described first sensor part； Launched electromagnetic wave by the second Sensor section being positioned at the position different from the position of described first sensor part, and connect Receive the electromagnetic wave launched by described second Sensor section and reflected by described object, or passed by described second by have received The electromagnetic wave of the object emission of the electromagnetic wave that sensor part is launched；By being positioned at and described first and described second Sensor section The 3rd Sensor section of different position, position launch electromagnetic wave, and receive and launched also by described 3rd Sensor section And the electromagnetic wave reflected by described object, or sent out by the object that have received the electromagnetic wave launched by described 3rd Sensor section The electromagnetic wave penetrated；Electromagnetic wave according to being received by described first to the 3rd Sensor section determines each the first to the 3rd sensor Distance between part and described object；With when the coordinate representing each distance being determined is in presumptive area, stop The rotation of described motor.

Incidentally, any combination of above-mentioned composed component and the statement of the present invention are replaced by system or the like These situations are also used as the aspect of the present invention.

The useful technique effect of the present invention

According to the present invention, because when the coordinate determined meets predetermined condition, the coordinate of object is determined, and motor Rotation is stopped, so being no need to the emergent stopping of motor and shooting and process image, and can reduce and is arranging use Complexity in terms of the detection range of object.Particularly because shooting and process image become there is no need, so processing speed Degree accelerates, and the time needed for motor stops that thus be accordingly used in can be shortened.

Accompanying drawing explanation

Fig. 1 is the exterior frontal view of the cutting machine according to the first embodiment of the present invention.

Fig. 2 is the outside rearview of this cutting machine.

Fig. 3 is the outside schematic diagram of cutting machine according to an embodiment of the invention.

Fig. 4 is the explanation sketch of the deathtrap in this cutting machine.

Fig. 5 is the functional-block diagram of this cutting machine.

Fig. 6 is the flow chart of the motor emergent stopping in this cutting machine.

Fig. 7 is the external declaration figure of the work gloves worn by the workman using this cutting machine.

Fig. 8 be on the both sides in the face that sensor is configured in circular saw blade in the case of the external declaration of embodiment Figure.

Fig. 9 is the functional-block diagram of cutting machine according to the second embodiment of the present invention.

Figure 10 shows the flow chart of the operation of the second embodiment of the present invention.

Figure 11 is the external declaration figure of cutting machine according to the third embodiment of the invention.

Figure 12 is the functional-block diagram of the cutting machine according to the 3rd embodiment.

Figure 13 A is the partial enlarged view of the cutting machine according to the 3rd embodiment shown in Figure 11.

Figure 13 B is the partial enlarged view of the cutting machine according to the 3rd embodiment shown in Figure 11.

Figure 14 is the perspective view of the cutting machine of desktop according to the fourth embodiment of the invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, a preferred embodiment of the present invention is described.Incidentally, identical shown in each view Or the parts of equivalent, component, process etc. are accompanied with identical reference marker, and its explanation repeated can be by suitably Omit.Additionally, embodiment is not limited to the present invention, and it is only example, in either case, the institute described in an embodiment Some features and its any combination are the most dispensable.

First embodiment

Fig. 1 is the exterior frontal view of the cutting machine 1 according to the first embodiment of the present invention.After Fig. 2 is the outside of cutting machine 1 View.Fig. 3 is the external declaration figure of cutting machine 1 according to this embodiment of the invention.Fig. 4 is the hazardous area in cutting machine 1 The explanation sketch in territory 30.Fig. 5 is the functional-block diagram of cutting machine 1.Each square frame that figure 5 illustrates is by using hardware, soft Part or a combination thereof realize.

First, by explanation according to the cutting machine 1 of the first embodiment of the present invention structurally and operationally.As illustrated in fig. 1 and 2, Cutting machine 1 is so-called table saw, and mainly includes main part 20, workbench portion 21 and carriage portion 22.

Main part 20 includes motor 5 wherein and controls part 3.Additionally, main part 20 is provided with opening of table saw 1 Close part 23, circular saw blade regulation part 24, tilt adjustment part 25 and for being driven the notification section 26 of notice of state.

In switch sections 23, on and off switch is coated with lid 27.Circular saw blade regulation part 24 is for along Vertical Square Position to regulation circular saw blade 6, i.e. above (workbench 33 above) of the workbench portion 21 that circular saw blade 6 describes from behind Overhang, and be provided with handle 28 and securing rod 29.By along a direction rotating handles 28 in left and right directions, Circular saw blade 6 can be conditioned from the above overhang of workbench portion 21.After adjustment, fix prominent by securing rod 29 Out position.Tilt adjustment part 25 is for regulating the circular saw blade 6 above angle of inclination relative to workbench portion 21, and sets It is equipped with handle 30.By along a direction rotating handles 30 in left and right directions, angle of inclination can be regulated.Notification section 26 show the driving condition of motor 5, angle of inclination etc. in a digital manner, or are shown by the flicker of LED or light etc. They.Alternatively, notification section 26 notifies the driving condition of motor 5, angle of inclination etc. by buzzer, message etc..Additionally, When there is abnormal condition, notification section 26 carries out the notice of the abnormal condition showing or being described below.Additionally, its In accommodate the quantifier housing parts 31 of quantifier and be arranged on the side of main part 20.

Workbench portion 21 is provided with and is attached to the support section 32 of main part 20, kept by described support section 32 Workbench 33 and the stretching operating platform 34 and 35 being arranged on the left side of described workbench 33 and right side.Workbench 33 is provided with saw Bar through hole 36, its permission circular saw blade 6 projects upwardly beyond above workbench 33, and workbench 33 is additionally provided with blade guards 37, it is positioned at the top of described saw blade through hole 36, and covers the circumferential edge of the circular saw blade 6 projected above from workbench 33 Edge and side.Additionally, quantifier 38 and for guiding the fence 39 of workpiece to be arranged on the above of workbench 33.Division saw blade 43 Being arranged on the rear portion of saw blade through hole 36, division saw blade 43 enters in the cut portion of the workpiece being cut to be divided by workpiece It is cleaved into two parts.

Quantifier 38 is for moving work when workpiece is cut by circular saw blade 6 along the groove 101 being arranged in workbench 33 Part, simultaneously so that the proximal surface of quantifier 38 abuts against on workpiece.Quantifier 38 is rotatable around axle (not shown), and And it is configured to the angle regulating workpiece relative to circular saw blade 6.I.e., it is possible to change the cutting angle of workpiece.

Fence 39 supported portion divides 32 supports, it is possible to move along support section 32.By changing the position of fence 39, circle Distance between the proximal surface of saw blade 6 and fence 39 is changed, such that it is able to the cut lengths of regulation workpiece.Additionally, rule (not shown) is arranged on support section 32, thus the distance between circular saw blade 6 and fence 39 can be from being arranged on fence 39 On dividing head determine.

Carriage portion 22 includes sawing the castor 40 of 1 for Mobile desk type and being attached and supportive body portion with described castor 40 Divide the stand 41 of 20.Stand 41 is provided with the fence housing parts 42 accommodating above-mentioned fence 39 wherein.In fig. 2 it is shown that Fence 39 is accommodated in the state in fence housing parts 42.

The structure of table saw 1 as it has been described above, and the structure of table saw 1 be described the most in a simplified manner below.Platform Formula saw 1 is provided with carriage portion 2 (main part 20, workbench portion 21) and circular saw blade 6, a part of circumferential edges of circular saw blade From projecting above of carriage portion 2.Workman workpiece (such as timber) is arranged in carriage portion 2 above on, and towards just Slide workpiece in the circular saw blade 6 rotated, cut workpiece from there through circular saw blade 6.Be described below about circular saw blade 6 is urgent Stop structurally and operationally.

As it is shown in figure 5, cutting machine 1 is provided with first sensor the 11, second sensor the 12, the 3rd sensor 13, control portion Divide 3, motor drive circuit 4, motor 5 and siren 7.Joining of first sensor the 11, second sensor 12 and the 3rd sensor 13 Put such as it is shown on figure 3, and each sensor be fixed to carriage portion 2.But, the allocation position of each sensor is permissible Mutually different, and sensor configuration is not restricted to the configuration shown in Fig. 3 in the present invention.Each sensor such as includes solid Surely it is arranged on the transmitting on carriage portion 2 and reception antenna, and they have the function launched and receive electromagnetic wave, so They can be measured from them to the distance of object 9.The frequency of electromagnetic wave to be launched is permissible for each sensor Different or identical.Incidentally, object 9 is electromagnetic-wave reflector (such as metallic object), or is that (such as RF marks IC tag Sign), it is attached to the distal portions of thumb of the work gloves 20 that workman has on the most as shown in Figure 7.Additionally, IC tag can To be the passive label not depositing battery.As shown in Figure 4, deathtrap 30 is preset in the vicinity of circular saw blade 6, and And as it is explained in detail hereinafter, when object 9 proceeds in deathtrap 30, motor 5 just carries out emergent stopping.Control part 3 will drive Signal is sent to motor drive circuit 4, and motor drive circuit 4 is rotatably driven motor 5.Circular saw blade 6 is according to motor 5 Rotation is rotationally driven.When siren 7 is opened by control part 3, siren 7 produces alarm to workman, for example, sound Sound or light.

Fig. 6 is the flow chart of the emergent stopping of the motor 5 in cutting machine 1.Control to start from cutting machine 1 to switch on power also And circular saw blade 6 rotates the state of (motor 5 rotates).First sensor 11 measures the distance between itself and object 9.Concrete and Speech, first sensor 11 launches electromagnetic wave.When object 9 is metallic object, first sensor 11 receives from first sensor 11 The electromagnetic wave penetrated and reflected by object 9.When object 9 is IC tag, first sensor 11 receives by have received by the first biography The electromagnetic wave that the object 9 of the electromagnetic wave that sensor 11 sends is launched, and, it utilizes the electromagnetic wave sent by first sensor 11 to make For energy source.First sensor 11 measures (such as calculating) itself and thing according to the transmitting of electromagnetic wave and the difference between receiving Distance between body 9.The principle measured is similar to the measuring principle of radar.Subsequently, the second sensor 12 and the 3rd sensor 13 And first sensor 11 measures the distance between their own and object 9 respectively identically.

Such as, the control part 3 including microcomputer receives the range data from each sensor, and according to respectively Distance between individual sensor and object 9 determines the three-dimensional coordinate of (such as calculating) object 9.Subsequently, control part 3 and determine object Whether this three-dimensional coordinate of 9 falls in predetermined deathtrap.In object 9 falls into deathtrap, the fact is here meaned The thumb of workman near circular saw blade 6.When the three-dimensional coordinate of object 9 does not falls within deathtrap, control part 3-dimensional is held and is driven Dynamic motor 5 (continuing to transmit drive signals to motor drive circuit 4), and maintain the closed mode of siren 7.The opposing party Face, when the three-dimensional coordinate of object 9 falls in deathtrap, controls part 3 and siren 7 is switched to open mode to produce police Report (for example, sound or light), and stop motor 5 (stopping signal being sent to motor drive circuit 4).Thus, at object 9 when falling in deathtrap 30, and the rotation of circular saw blade 6 is stopped, and reduces risk.

The emergency stop method of the cutting machine 1 according to the present invention and the motor in cutting machine 15 have employed such new knot Structure and method: the three-dimensional coordinate of object 9 is determined, and when the coordinate determined fall into deathtrap, motor 5 is stopped.? In the emergency stop method of the cutting machine 1 according to this embodiment and the motor in cutting machine 15, exist and need not shooting and place Such advantage of reason image, and in the way of detection range does not falls within risk range, it is configured such complexity fall Low.It can thus be stated that compared with conventional art, urgent according to the cutting machine 1 of this embodiment and the motor 5 in cutting machine 1 Method of shutting down, is fabulous in terms of the easiness of cost, processing speed and motor emergent stopping.Additionally, because the first sensing Device 11 is positioned on the extension line of circular saw blade 6, so when the hands of people starts near circular saw blade 6, can be from the extension of circular saw blade 6 It is reliably detected object (hands of people).

Although have been based on describing as the embodiment of an example present invention above, but those skilled in the art It should be understood that can improve or change all parts or each process of this embodiment within the scope of the claims.Change The example entered will be described below.

Replace being launched by sensor 11,12 and 13 and receiving electromagnetic wave, such structure can be used: the transmitting of electromagnetic wave Carried out by emitting portion (sensor 11,12 or 13 or another sensor), and launched by emitting portion and by object 9 The electromagnetic wave reflected or the electromagnetic wave sent by the object 9 that have received the electromagnetic wave that emitting portion is launched are by each sensor 11,12 and 13 receive.In this case, for determining that the quantity of sensor of three-dimensional coordinate can be four or more.

Replace the distal portions of the thumb of work gloves 20 or in addition, object 9 can be arranged on work gloves 20 Another finger distal portions on.Additionally, the distal portion that object 9 can be arranged on the finger except work gloves 20 divides it On outer another part.It addition, arrange object 9 on work gloves 20, this is not essential for.Such as, object 9 can be adopted It is worn in finger or the wrist of workman by the form of ring or the like, or it can be by the holding for object 9 Device is attached to the precalculated position on hand of workman.

As shown in Figure 8, on every side of the both sides that three sensors can be configured in circular saw blade 6.Figure 8 illustrates is each Individual sensor and the such as first sensor 11 shown in Fig. 3 have identical function.In this case, sensor 14,15 With 16 for detecting the left hand of workman, and sensor 17,18 and 19 is for detecting the right hand of workman.By using such knot Structure, can degree of accuracy more higher than the degree of accuracy in the case of the configuration at the sensor that such as figure 3 illustrates detection object. That is, time on the side of the side being positioned at circular saw blade 6 when object 9 (on the side of the second sensor 12 in figure 3), can suppress round Saw blade 6 blocks and sends signal from opposite side (the 3rd sensor 13).

When object 9 is IC tag, be arranged in the object 9 on of work gloves 20 and be arranged on work Another object 9 on the another of glove 20 can launch the electromagnetic wave with mutually different frequency.Additionally, glove 20 (metallic object or IC tag) is shown as an example of object 9, but can use such structure: special coating quilt Directly it is coated to human body (hands of such as people), and coating is detected by the sensors, to calculate the distance with sensor.Additionally, The structure for detecting Temperature Distribution can be used.In the cutting process of workpiece, due to the friction between circular saw blade and workpiece, The cut portion of circular saw blade and workpiece becomes high temperature.On the other hand, the temperature of the health of people is usually above storing at normal temperatures The temperature of workpiece.It is therefore possible to use such structure: it is stored in control with being prepared from the distance of each sensor to circular saw blade In part processed, and, when in the presumptive area in distance circular saw blade, (region 30) detects another high temperature, motor is stopped.

Notice, circular saw blade 6 from the above overhang of carriage portion 2 and circular saw blade 6 relative to this above inclination angle Degree changes according to working condition.Therefore, it is stored in when the region 30 using workman to would correspond to various working condition in advance In storage part during such structure, and, when the overhang etc. of circular saw blade is changed, control part is from being stored in storage part In various regions in automatically select the region of optimum, it is possible to obtain more effectively result.This structure can be applied to institute In some embodiments.

Second embodiment

When motor is rotatably driven, the embodiment of above-described embodiment and improvement is directed corresponding to object The motor control of coordinate.Specifically, the glove 9 (wherein combining metallic object, IC tag or the like) worn from workman Signal received by the first to the 3rd sensor 11-13, and controlling computed range (coordinate) in part 3.Therefore, workman is worked as When there is no wearing gloves 9, it is impossible to carry out coordinate calculating, even if so when the hands of workman enters region 30, motor 5 also continues to Rotate.

Therefore, this embodiment is characterized in that the state before the rotation of motor 5 drives.As it is shown in figure 9, cutting machine 1 It is provided with the 4th sensor 114 in addition to first sensor 11 to the 3rd sensor 13.4th sensor 114 is for connecing Receive the reception device of the signal of object 9 (workman).When the signal from object 9 (glove) can not be received by the 4th sensor 114 Time, the driving of motor 5 is prohibited.Additionally, cutting machine 1 has gradient sensor 51, its detection circular saw blade 6 is relative to above-mentioned The above angle of inclination of carriage portion 2 (workbench), cutting machine 1 also has vertical position sensor 52, and it detects circular saw blade 6 Relative to the above upright position of carriage portion 2, and the output (positional information) coming from each sensor is fed into Control part 3.

The present embodiment 10 is described in detail with reference to the accompanying drawings.Cutting machine 1 is connected to source power supply, with actuation control part 3.Control part 3 and start the coordinate calculating process of object 9.Control part 3 and determine whether the 4th sensor 114 receives from object 9 To signal.That is, control part 3 and determine whether workman has worn glove 9.Such as, control part 3 be able to determine whether workman be Motor drive switch is operated under the state that he/her has worn glove 9.When the 4th sensor 114 is not received by from glove 9 Signal time, control part 3 and produce alarm and repeat this process, until workman puts on one's gloves 9.As alarm, display is alert Report message or sound guidance.

When controlling part 3 and receiving the signal from glove 9, it is from being combined in the storage part controlled part 3 Select the deathtrap 30 of the use state corresponding to circular saw blade 9.Coordinate corresponding to the deathtrap 30 of multiple use states It is stored in advance in storage part.Hereafter, control part 3 and export motor drive signal to motor drive circuit 4, to start horse Reach the rotation driving of 5.Because processing of hereafter carrying out is identical with the process in above-mentioned first embodiment, so omitting what it repeated Describe.Conveniently mention, in selecting deathtrap 30, controls part 3 and can automatically read circular saw blade 6 from carriage portion 2 Overhang and angle of inclination, and workman can manually select deathtrap.

3rd embodiment

In the above-described embodiments, detected the coordinate of object by three sensors, and determine whether the coordinate of detection Fall in deathtrap 30.Object is the glove 9 that workman wears, and especially, signal produces body (metallic object, IC tag) quilt It is attached to the thumb of glove 9.As shown in Figure 11-13B, this embodiment is characterised by being provided with finger detection part 102, its inspection Surveying whether finger locating is in the groove 101 for guiding above-mentioned quantifier 38, above-mentioned quantifier 38 is arranged on carriage portion 2 On (workbench).Conveniently mention, finger detection part 102 can be arranged on except in addition to guiding the groove 101 of quantifier Groove in.As illustrated in figures 13 a and 13b, such as, finger detection part 102 includes that signal emission part 102a and signal receive Part 102b, and detect whether the signal (such as, light) blocked (Figure 13 A) from signal emission part.Alternatively, finger Detection part 102 is sent signal (Figure 13 B) when pressing.Finger detection part 102 can be embedded in groove 101 Any position (total length can be extended and be embedded into), and any amount of finger detection part 102 can be embedded in In groove 101.

In the present embodiment, motor 5 can the only quilt when the finger (thumb) of workman is positioned in groove 101 Drive.When cutting workpiece, his/her thumb is placed in groove 101 by workman.When workman makes workpiece towards circular saw blade 6 (court Depth side to the paper of accompanying drawing) slide time, he/her makes his/her thumb move along groove 101 together with workpiece.Thumb The movement referred to always is detected by finger detection part 102, and is controlled motor 5 according to detection signal by controlling part 3.Work as control Part 3 is when detection signal determines that thumb is not located in groove 101, and it produces alarm, with stop motor 5 driving or The driving of motor 5 was forbidden before starting to drive.On the other hand, when controlling part 3, from detection signal, to determine that thumb is positioned at recessed Time in groove 101, it is to motor drive circuit 4 output drive signal, to start to drive motor 5.Here, if groove 101 phase The thumb position of circular saw blade 6 being set to workman is positioned at such state in groove 101, his/her remaining hands Refer to not arrive circular saw blade 6, then he/her need not wear glove or the like.

Preferably, in order to obtain further effect, be also determined in the way of identical with above-mentioned second embodiment be No workman has worn glove.In this case, glove signal produce body be finally attached to the thumb except glove it Another outer position, grasps this position of object from there through the position of the coordinate and thumb that produce body according to signal, can Obtain further effect.Furthermore, it is possible to use sensor to be arranged on the structure on quantifier 38, the most only the one of workman Hands keeps quantifier 38 and another hands to drive motor 5 when being positioned in groove 101.

4th embodiment

Cutting machine 1 in the above-described embodiments is table saw, but the present invention can be applied to desktop cutting machine, example As shown in figure 14.This desktop cutting machine includes pedestal 60 and the rotating disk 61 being pivotably supported by described pedestal 60, and It is provided with workpiece be placed in base part thereon, the cut portion 63 being pivotably supported circular saw blade 62 and support cut portion 63 with near base part and the separated support section 64 opened.Pedestal 60 is provided with the fence 65 supporting workpiece.Additionally, cut Cut part 63 and be provided with the handle 66 grasped by workman.

In this embodiment, three sensors 11 to 13 of the position for detecting object are arranged on the cervical region of rotating disk 61 On 67, rotating disk 61 fence 65 rear side and on pedestal 60.Herein, need in cutting work process for workman Grasp handle 66 downward (towards base part) and swing cut portion 63.That is, because workman is always with his/her hands (the such as right hand) grasps handle 66, so this hands is little near circular saw blade 62.Therefore, another hands is (the most in the drawings The left hand shown in left side) possibly into deathtrap.Therefore, in this embodiment, three coordinate measurement sensor 11-13 quilts It is arranged on the left side of circular saw blade 62.Conveniently mention, sensor can be arranged on left side and right side about circular saw blade 62, and They can be arranged on cut portion 63 or support section 64.

Claims (9)

1. a cutting machine, its saw blade including cutting the workpiece being supported on carriage portion and for driving described saw blade Motor, described cutting machine is characterised by:

Have and be arranged in multiple Sensor sections of diverse location each other and determine that the coordinate of three-dimensional coordinate of object determines portion Point；With

Stop the stop section of the rotation of described motor, wherein,

Described object is provided in the electromagnetic-wave reflector on the glove on hand or worn of workman or IC tag by workman,

Described coordinate determines that part is by detecting the electromagnetic wave reflected by electromagnetic-wave reflector or being sent out by IC tag by detection The electromagnetic wave penetrated is to measure each Sensor section distance to described object, and determines described object according to measurement result Three-dimensional coordinate, thus described coordinate determines that part can measure the distance from multiple different positions to described object, with basis Measurement result determines the coordinate of described object,

When being determined that the coordinate that part determines meets predetermined condition by described coordinate, described stop section stops the rotation of described motor Turn.

Cutting machine the most according to claim 1,

It is characterized in that, at least one of described Sensor section is positioned in described saw blade along the extension line of cut direction.

Cutting machine the most according to claim 1,

It is characterized in that, one of them of described Sensor section is positioned in the side of described saw blade, and other sensing Device part is positioned in the opposite side of described saw blade.

Cutting machine the most according to claim 1,

It is characterized in that, when described object is electromagnetic-wave reflector, each Sensor section described launches electromagnetic wave, and connects Receive the electromagnetic wave launched from described Sensor section and reflected by described object；When described object is IC tag, described respectively Individual Sensor section launches electromagnetic wave, and receives from the object emission that have received the electromagnetic wave launched by described Sensor section Electromagnetic wave.

Cutting machine the most according to claim 1,

It is characterized in that, each Sensor section has emitting portion and the receiving portion launching electromagnetic wave；

When described object is electromagnetic-wave reflector, described receiving portion receives launches and anti-by object from described emitting portion The electromagnetic wave penetrated；When described object is IC tag, described receiving portion receives from have received the electromagnetism launched from emitting portion The electromagnetic wave of the object emission of ripple.

Cutting machine the most according to claim 1,

It is characterized in that, when being determined that the coordinate that part determines is in predetermined region by described coordinate, described stop section Stop the rotation of described motor.

Cutting machine the most according to claim 1, also includes alarm part, and it is stopped by described stop section in the rotation of motor Time only, or before or after this stopping, producing alarm.

Cutting machine the most according to claim 1,

It is characterized in that, described saw blade is circular saw blade, and it is maintained at a part of circumferential edges of described saw blade from described stand Part the state projected above, from there through described workpiece on described carriage portion on move, described workpiece is by institute State saw blade cutting.

Cutting machine the most according to claim 8,

It is characterized in that, described coordinate determine part there is Sensor section, its on described carriage portion on be arranged in On the both sides of described saw blade.