CN208521521U - A kind of supply unit for industrial robot teaching - Google Patents

Abstract

The utility model, which is created, is related to a kind of supply unit for industrial robot teaching, and the supply unit includes the pusher portion being fixedly arranged on table top and transport unit, and the pusher portion is vertically arranged with the transport unit；The pusher portion includes scraping wings, conveying cylinder, conveying air cylinder base, conveying expeller, feed bin and feed bin pedestal, the conveying cylinder is fixedly arranged on the scraping wings by conveying air cylinder base, the conveying expeller is connect with the drive rod of the conveying cylinder, and the feed bin pedestal is fixedly arranged on the scraping wings；The transport unit includes conveyer belt and material blocking block, and the material blocking block is fixedly arranged on the top of the transmission tail.The utility model create the utility model has the advantages that the setting of the feed bin manually can once pile up multiple workpiece, reduce the working strength of operator；And the feed bin structure of supply unit can intuitive judgment its interior workpiece number, workpiece is added in time convenient for operator, in order to avoid influence real training process.

Description

A kind of supply unit for industrial robot teaching

Technical field

The invention belongs to robot field, more particularly, to a kind of supply unit for industrial robot teaching.

Background technique

For the training of robot, the supply unit of workpiece is essential, but existing supply unit one As be exactly a simple conveyer belt, operator needs for single workpiece to be placed on conveyer belt, so as to the subsequent code of robot Operation is put, the artificial placement process is cumbersome, slightly neglects, that is, will affect the real training process of robot, and the invention is The improvement carried out on the basis of above-mentioned technical problem.

Summary of the invention

It is an object of the present invention to provide a kind of supply unit for industrial robot teaching, the feed bin of the supply unit can one It is secondary to pile up multiple workpiece, convenient for going on smoothly for subsequent robot's real training process.

In order to solve the above technical problems, the invention the technical solution adopted is that:

A kind of supply unit for industrial robot teaching, the supply unit includes the pusher portion being fixedly arranged on table top And transport unit, the pusher portion are vertically arranged with the transport unit；

The pusher portion includes scraping wings, conveying cylinder, conveying air cylinder base, conveys expeller, feed bin and feed bin pedestal, The conveying cylinder is fixedly arranged on the scraping wings by conveying air cylinder base, the conveying expeller and the conveying cylinder Drive rod connection, the feed bin pedestal are fixedly arranged on the scraping wings；

The transport unit includes conveyer belt, material blocking block, luminance sensor and photoelectric sensor, and the luminance sensor is by brightness Degree sensor stand is fixedly arranged on right above the conveyer belt, and the photoelectric sensor is fixedly arranged on described by opto-electronic sensor support The side of conveyer belt, the material blocking block are fixedly arranged on the top of the transmission tail.

Further, the feed bin pedestal includes the pedestal support plate of integrally connected and the pedestal positioned at pedestal support plate two sides Supporting leg is equipped with the through slot passed through for the conveying expeller between two pedestal supporting legs, sets in the pedestal support plate There is the through-hole that workpiece passes through in feed bin.

Further, the feed bin includes annular disk and several support columns, the top of several support columns and the annular disk It is fixedly connected, the bottom of several support columns is fixedly connected with the pedestal support plate, which is located at the pedestal The periphery of through-hole in support plate.

Further, the conveying expeller two sides are symmetrically arranged with guide post, and the guide post includes column core and is located at described The bearing of column core periphery, column core bottom are fixedly arranged on the scraping wings.

Further, the end face that the material blocking block is contacted with workpiece is equipped with V-shape gap.

The pusher portion for having the beneficial effect that the supply unit of the invention and transport unit are vertically arranged, and save space；It should The setting of feed bin manually can once pile up multiple workpiece, reduce the working strength of operator；And the feed bin structure of supply unit Can intuitive judgment its interior workpiece number, workpiece is added in time convenient for operator, in order to avoid influence real training process；Supply unit brightness Degree sensor can distinguish the color of workpiece, so that robot can carry out subsequent palletization operations according to different colors.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the practical traning platform in embodiment；

Fig. 2 is the structural schematic diagram of the robot cell in embodiment；

Fig. 3 is the structural schematic diagram of the supply unit in embodiment；

Fig. 4 is the structural schematic diagram of the palletized unit in embodiment；

Fig. 5 is the structural schematic diagram of the Cutting unit in embodiment；

Fig. 6 is the structural schematic diagram of the coating unit in embodiment；

Fig. 7 is the structural schematic diagram of the sanding unit in embodiment；

Fig. 8 is the structural schematic diagram of the tool unit in embodiment；

Fig. 9 is the structural schematic diagram of the simulation gluing tool in embodiment；

Figure 10 is the structural schematic diagram of the simulating cut tool in embodiment；

Figure 11 is the structural schematic diagram of the simulation milling tools in embodiment.

In figure:

A- table top；

B- supply unit, B1- scraping wings, B2- convey cylinder, and B3- conveys air cylinder base, and B4- conveys expeller, B5- material Storehouse, B51- annular disk, B6- feed bin pedestal, B7- conveyer belt, B8- material blocking block, B9- luminance sensor, B10- photoelectric sensor；

C- palletized unit, C1- stacking upper backup pad, C2- stacking lower supporting plate, C3- stacking support rod；

D- Cutting unit, D1- cut upper backup pad, and D2- cuts lower supporting plate, and D3- cuts support rod；

E- coating unit, E1- gluing pedestal, E2- gluing support rod, E3- gluing support plate, E4- glue rifle；

F- tool unit, F1- tool lower supporting plate, F2- tool upper backup pad, F21- fluting, F22- supporting table, F3- work Has support column；

G- sanding unit, G1- polishing lower supporting plate, G2- polishing upper backup pad, G21- polishing cylinder, G22- polishing pusher Block, G23- polishing backgauge column, G3- polishing support column；

H- robot cell, H1- robot, H2- machinery bed, H3- finger cylinder；

J- simulates gluing tool, J1- gluing tool fixture block, and J2- gluing tool upper mounted plate suspends under J3- gluing tool Plate, J4- gluing tool guide rod, J5- gluing tool link block, J6- sucker；

K- simulating cut tool, K1- cutting tool fixture block, K2- cutting tool upper mounted plate suspend under K3- cutting tool Plate, K4- cutting tool guide rod, K5- cutting tool link block, K6- writing pen；

L- simulates milling tools, L1- milling tools fixture block, and L2- milling tools upper mounted plate suspends under L3- milling tools Plate, L4- milling tools guide rod, L5- milling tools link block, L6- grinding head；

M- touch-screen display；

N- alarm；

P- workpiece.

Specific embodiment

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can To be combined with each other.

In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately It is described, the meaning of " plurality " is two or more.

In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning of the term in the invention.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.

In some embodiments, which includes the supply unit B on table top A, palletized unit C, Cutting Cells D, coating unit E, tool unit F, sanding unit G, robot cell H, touch-screen display M and alarm N, wherein Supply unit B, palletized unit C, Cutting cells D, coating unit E, tool unit F, assembly unit G are respectively positioned on robot list In the working radius of first H.Each unit can be specifically laid out according to Fig. 1, which is conducive to reduce whole real training The volume of platform；And the electrical wiring of the practical traning platform is integrated, starts real training convenient for student's wiring, it is easy to operate；In addition, above-mentioned electricity It is built-in to make line leave with rage, it is not easy to be damaged.

The table top of the practical traning platform is bolted to connection by aluminium alloy extrusions, uses aluminium alloy extrusions as main body Structure, not only good appearance, but also assemble and be easy, it is only necessary to simple allen wrench can assemble completion.

Wherein, alarm N is specially buzzer siren, which is provided with indicator light, when each equipment of the practical traning platform is normally transported In the case where row, which is green, and in the case that each equipment of practical traning platform is operating abnormally, which is red, bee Ring alarm equipment alarm.

Preferably, aluminium alloy extrusions selects two kinds of models of A1 40x40 and A2 40x80.

In addition, robot teaching's system that the practical traning platform is related to is the prior art, it is preferable that its hardware composition includes control Cabinet, robot, teaching machine, router, touch-screen display and the end PC, above-mentioned each hardware is commercial product, wherein robot For the final actuating station of robot teaching's system, responsible execution write by program；Teaching machine carries out teaching volume to robot Journey, the program that teaching passes through can send the end PC to, or the movement of robot is directly controlled by control cabinet, by control cabinet Controller when controlling robot motion, the program that the touch-screen display that connect with control cabinet selects teaching to pass through can be selected. Control cabinet is the core of robot teaching's system, is responsible for the movement of control robot；Router is by control cabinet and the end PC group At network group；The end PC is equipped with robot motion simulation software, and teaching can be sent to by router by emulating the program passed through Device；It is connected between control cabinet, robot and teaching machine and router by cable, by wirelessly connecting between multiple ends PC and router It connects, is configured by the network address to each equipment, program can be run in the mutual distribution of machine people of each equipment room.

Preferably, the model DSQC679 of teaching machine.

Preferably, the model of control cabinet are as follows: 120-505490.

In some embodiments, the robot H1 unit H includes robot H1, machinery bed H2 and finger cylinder H3, The bottom robot H1 is fixedly connected by machinery bed H2 with table top A, and machinery bed H2 is process by aluminium sheet, the aluminium sheet It is fixedly connected by bolt with table top A, when needing replacing robot H1 model, machinery bed H2 need to be replaced together.Machine The end device people H1 is fixed with finger cylinder H3, and finger cylinder H3 is used to grab different tools.

Preferably, the IRB120 model robot of ABB manufacturer may be selected in robot H1, which is 580mm。

In some embodiments, the supply unit B is equipped with two groups, and two groups of supply unit structures are identical, respectively defeated Send the workpiece of different model, the setting of two groups of supply units can allow student operate robot H1 to the workpiece of different model into Row stacking real training.

The supply unit includes the pusher portion being fixedly arranged on table top A and transport unit, and the pusher portion and the transport unit are hung down Straight setting.

The pusher portion includes scraping wings B1, conveying cylinder B2, conveying air cylinder base B3, conveying expeller B4, feed bin B5 It is fixedly arranged on the scraping wings B1 with feed bin pedestal B6, the conveying cylinder B2 by conveying air cylinder base B3, the conveying pushes away Material block B4 is connect with the drive rod of the conveying cylinder B2, and the feed bin pedestal B6 is fixedly arranged on the scraping wings B1, the material Orlop seat B6 includes the pedestal support plate of integrally connected and the pedestal supporting leg positioned at pedestal support plate two sides, two pedestals The through slot passed through for the conveying expeller B4 is equipped between supporting leg, it is logical that the pedestal support plate is equipped with workpiece in feed bin B5 The through-hole crossed；The end face that the conveying expeller B4 is contacted with the workpiece is equipped with V-shape gap；

The feed bin B5 includes annular disk B51 and four support columns, the top of four support columns and the annular disk B51 It is fixedly connected, the bottom of four support columns is fixedly connected with the pedestal support plate, which is located at the pedestal The periphery of through-hole in support plate；Feed bin B5 structure can intuitive judgment its interior workpiece number, add in time convenient for operator Workpiece, in order to avoid influence real training process；

The two sides the conveying expeller B4 are symmetrically arranged with guide post, and the guide post includes column core and is located at outside the column core The bearing enclosed, column core bottom are fixedly arranged on the scraping wings B1.

The transport unit includes conveyer belt B7, material blocking block B8, luminance sensor B9 and photoelectric sensor B10, the luminance Sensor B9 is fixedly arranged on right above the conveyer belt B7 by luminance sensor B9 bracket, and the photoelectric sensor B10 passes through photoelectricity Sensor stand is fixedly arranged on the side of the conveyer belt B7, and the material blocking block B8 is fixedly arranged on the top of the tail portion the conveyer belt B7, The end face that the material blocking block B8 is contacted with workpiece is equipped with V-shape gap.

Luminance sensor B9 can distinguish the color of workpiece, so that robot H1 carries out subsequent stacking according to different colors Operation；The photoelectric sensor can incude the location of workpiece, after which senses that workpiece reaches predetermined position, robot H1 It will start subsequent grasping manipulation.

Preferably, luminance sensor model O5C-500；Photoelectric sensor model PZ-042N.

Preferably, conveyer belt is outsourcing product, using the conveyor product of the existing maturation in market as the conveying of practical traning platform Unit reduces the life cycle costing of design, has saved fund and the time of design, has increased the stability of practical traning platform.

In some embodiments, the palletized unit C includes stacking upper backup pad C1, stacking lower supporting plate C2 and is located at this Four stacking support rod C3 between two support plates, the stacking lower supporting plate C2 is fixedly arranged on the table top A, in the stacking It is decorated with 6x6 square grid on the upper surface support plate C1, when stacking real training, student can clearly complete a stacking sudden peal of thunder.

In some embodiments, the Cutting cells D includes cutting upper backup pad D1, cutting lower supporting plate D2 and position Four cutting support rod D3 between two support plates, the cutting lower supporting plate D2 is fixedly arranged on the table top A, described to cut It cuts the upper surface upper backup pad D1 and is machined with triangular form, curve, square, ellipse etc. for student's cutting training figure.

In some embodiments, the coating unit E includes gluing pedestal E1, gluing support rod E2, gluing support plate E3 With the glue rifle E4 that glue is housed, the bottom gluing support rod E2 is fixedly arranged on the gluing pedestal E1, top and the painting Glue support plate E3 is vertically fixedly connected, and the free end of the gluing support plate E3 is equipped with the card slot for fixing the glue rifle E4.

Wherein, glue rifle E4 can be simple syringe, and the inside is equipped with glue, and the syringe is at low cost, not have to purchase price The glue rifle of lattice valuableness, and true gluing process can be simulated.

In some embodiments, the sanding unit G include polishing lower supporting plate G1, polishing upper backup pad G2 and be located at should Four polishing support column G3 between two support plates, the polishing lower supporting plate G1 are fixedly connected with the table top A, the polishing Upper backup pad G2 be equipped with polishing cylinder G21, polishing expeller G22 and polishing backgauge column G23, the polishing expeller G22 and The drive rod connection of polishing cylinder G21, the end face that the polishing expeller G22 is contacted with workpiece is equipped with V-shape gap, described to beat Mill cylinder G21 pushes polishing expeller to push to workpiece and abuts with polishing backgauge column.

In some embodiments, the tool unit F includes tool lower supporting plate F1, tool upper backup pad F2 and is located at this Four tool support column F3 between two support plates, the tool lower supporting plate F1 are fixedly connected with the table top A, the tool Set on upper backup pad F2 there are three the F21 that slots, each lower part fluting F21 is equipped with supporting table F22, simulate gluing tool J, Simulating cut tool K, simulation milling tools L are located in the supporting table in the corresponding fluting.Fluting F21 structure letter It is single, and to the accurate positioning of workpiece.

In some embodiments, the simulation gluing tool J includes gluing tool fixture block J1, gluing tool upper mounted plate Suspension board J3, gluing tool guide rod J4, gluing tool link block J5 and two sucker J6, the gluing under J2, gluing tool Tool upper mounted plate J2 is located in the supporting table in the fluting, and the gluing tool fixture block J1 is fixedly arranged on the gluing tool On fixed plate J2, the relatively described gluing tool upper mounted plate J2 of suspension board J3 is arranged in parallel under the gluing tool, the gluing Tool upper mounted plate J2 is connected with suspension board J3 under gluing tool by gluing tool guide rod J4, the gluing tool guide rod J4 Top is screwed with the gluing tool upper mounted plate J2 and connect, and the lower part gluing tool guide rod J4 passes through spring and painting It is screwed and connect with plug after suspension board J3 under glue tool；It suspends under the gluing tool link block J5 and the gluing tool Plate J3 is fixedly connected, and two sucker J6 are fixedly arranged on the gluing tool link block J5, and under the relatively described gluing tool Suspension board J3 is symmetrical arranged.

Wherein, gluing tool fixture block J1 is the crawl position of finger cylinder H3 in robot.

Wherein, suspension board J3, gluing tool guide rod J4 form the knot that suspends under gluing tool upper mounted plate J2, gluing tool Structure, the structure can be used to the flexible workpiece that adjusts at a distance from glue rifle E4.

The sucker J6 includes the tracheae connecting column being from top to bottom sequentially fixedly connected, sucker J6 fixed column and sucker J6 Portion, wherein tracheae connecting column is to be threadedly coupled fixation with sucker J6 fixed column, which is hollow tube structure, and It is connected to the suction hole on sucker J6, needs to use with mates such as air intake ducts when sucker J6 is used, the portion sucker J6 material Optional nitrile rubber is made, the material have biggish breaking tenacity, draw or put down workpiece workpiece will not be caused it is any Damage.

Preferably, which can be selected ZPT40HN model sucker.

In some embodiments, the simulating cut tool K includes cutting tool fixture block K1, cutting tool upper mounted plate Suspension board K3, cutting tool guide rod K4, cutting tool link block K5 and writing pen K6, the cutter under K2, cutting tool Tool upper mounted plate K2 is located in the supporting table in the fluting, and the cutting tool fixture block K1 is fixedly arranged on the cutting tool solid On fixed board K2, the relatively described cutting tool upper mounted plate K2 of suspension board K3 is arranged in parallel under the cutting tool, the cutter Tool upper mounted plate K2 is connected with suspension board K3 under cutting tool by cutting tool guide rod K4, on the cutting tool guide rod K4 Portion is screwed with the cutting tool upper mounted plate K2 and connect, and the lower part cutting tool guide rod K4 passes through spring and cutting It is screwed and connect with plug after suspension board K3 under tool；The cutting tool link block K5 and suspension board under the cutting tool K3 is fixedly connected, and the writing pen K6 is fixedly arranged on the cutting tool link block K5.

Wherein, cutting tool fixture block K1 is the crawl position of finger cylinder H3 in robot.

Wherein, suspension board K3, cutting tool guide rod K4 form the knot that suspends under cutting tool upper mounted plate K2, cutting tool Structure, the structure can be used to the flexible writing pen K6 that adjusts at a distance from the cutting upper surface upper backup pad D1.

In some embodiments, the simulation milling tools L includes milling tools fixture block L1, milling tools upper mounted plate Suspension board L3, milling tools guide rod L4, milling tools link block L5 and grinding head L6, the polishing work under L2, milling tools Tool upper mounted plate L2 is located in the supporting table in the fluting, and the milling tools fixture block L1 is fixedly arranged on the milling tools solid On fixed board L2, the relatively described milling tools upper mounted plate L2 of suspension board L3 is arranged in parallel under the milling tools, the polishing work Tool upper mounted plate L2 is connected with suspension board L3 under milling tools by milling tools guide rod L4, on the milling tools guide rod L4 Portion is screwed with the milling tools upper mounted plate L2 and connect, and the lower part milling tools guide rod L4 passes through spring and polishing It is screwed and connect with plug after suspension board L3 under tool；The milling tools link block L5 and suspension board under the milling tools L3 is fixedly connected, and the grinding head L6 is fixedly arranged on the milling tools link block L5.

Wherein, milling tools fixture block L1 is the crawl position of finger cylinder H3 in robot.

Wherein, suspension board L3, milling tools guide rod L4 form the knot that suspends under milling tools upper mounted plate L2, milling tools Structure, the structure can be used to the flexible grinding head L6 that adjusts at a distance from workpiece.

Real training process in the various embodiments described above is as follows:

(1) stacking real training

Workpiece is stacked in feed bin B5, workpiece is dropped down by gravity in the through slot of feed bin pedestal B6, and cylinder B2 band is conveyed Unit one is pushed to conveyer belt B7 by dynamic conveying expeller B4, and the communicated band B7 of workpiece is transmitted to designated position；Starting is shown Device is taught, control robot H1 is moved to the top of unit one；Finger cylinder H3 is opened, and robot H1 grabs first work Part, will be in first grid of workpiece handling to palletized unit；It completes after grabbing for the first time, due to gravity, second work Part is fallen, and conveying cylinder B2 shifts second workpiece onto conveyer belt B7 again, and robot H1 completes the crawl of second workpiece, and will It is put into second box of palletized unit；As above circulation, until the workpiece of feed bin B5 has been grabbed, real training is completed.

(2) real training is cut

Start teaching machine, robot H1 is controlled according to study course and is moved to practical traning platform tool placement unit, finger cylinder H3 is beaten It opens, the simulating cut tool on gripping tool platform, then moves to above Cutting unit, student is according to requiring to complete track Teaching, so that the shape track that robot H1 is carved on Cutting unit moves；The place being moved through passes through cutter Writing pen K6 on tool is drawn, for judging that student programs the accuracy of teaching.

(3) gluing real training

Start teaching machine, robot H1 is controlled according to study course and is moved to practical traning platform tool placement unit, finger cylinder H3 is beaten Open, the simulation gluing tool on gripping tool platform, simulate gluing tool sucker J6 workpiece is sucked after, robot H1 is moved to painting The syringe of Jiao Danyuanchu, coating unit are provided with glue, and the top of the syringe is equipped with tracheae, and robot H1 is mobile by workpiece Immediately below to syringe, teaching movement is carried out according to the track that real training requires using teaching machine control robot H1；Glue is in gas It is flowed out under the blowing of body by syringe outlet, makes to form rail required for gluing on workpiece by being moved to for robot H1 Mark.

(4) polishing real training

Start teaching machine, robot H1 is controlled according to study course and is moved to practical traning platform tool placement unit, finger cylinder H3 is beaten It opens, the milling tools on gripping tool platform, then robot H1 is moved to sanding unit, the real training polished.

Above an embodiment of the invention is described in detail, but the content is only the invention Preferred embodiment should not be considered as limiting the invention the practical range of creation.It is all to be made according to the invention application range All the changes and improvements etc., shall remain within the patent scope covered by the invention.

Claims (5)

1. a kind of supply unit for industrial robot teaching, which is characterized in that the supply unit includes being fixedly arranged on table top On pusher portion and transport unit, the pusher portion be vertically arranged with the transport unit；

The pusher portion includes scraping wings, conveying cylinder, conveying air cylinder base, conveys expeller, feed bin and feed bin pedestal, described Conveying cylinder is fixedly arranged on the scraping wings by conveying air cylinder base, the transmission of the conveying expeller and the conveying cylinder Bar connection, the feed bin pedestal are fixedly arranged on the scraping wings；

The transport unit includes conveyer belt, material blocking block, luminance sensor and photoelectric sensor, and the luminance sensor is passed by luminance Sensor bracket is fixedly arranged on right above the conveyer belt, and the photoelectric sensor is fixedly arranged on the transmission by opto-electronic sensor support The side of band, the material blocking block are fixedly arranged on the top of the transmission tail.

2. a kind of supply unit for industrial robot teaching according to claim 1, which is characterized in that the feed bin Pedestal includes the pedestal support plate of integrally connected and the pedestal supporting leg positioned at pedestal support plate two sides, two pedestal supports The through slot passed through for the conveying expeller is equipped between leg, the pedestal support plate passes through logical equipped with workpiece in feed bin Hole.

3. a kind of supply unit for industrial robot teaching according to claim 2, which is characterized in that the feed bin Including annular disk and several support columns, the top of several support columns is fixedly connected with the annular disk, several support columns Bottom is fixedly connected with the pedestal support plate, which is located at the periphery of the through-hole in the pedestal support plate.

4. a kind of supply unit for industrial robot teaching according to claim 1, which is characterized in that the conveying Expeller two sides are symmetrically arranged with guide post, and the guide post includes column core and the bearing positioned at the column core periphery, the column core Bottom is fixedly arranged on the scraping wings.

5. a kind of supply unit for industrial robot teaching according to claim 1, which is characterized in that the backgauge The end face that block is contacted with workpiece is equipped with V-shape gap.