CN218017020U

CN218017020U - Special machine for drilling and chamfering strip-shaped needle plate

Info

Publication number: CN218017020U
Application number: CN202222020550.2U
Authority: CN
Inventors: 徐松涛; 韩伟泽; 邱少君; 赵瑛瑛
Original assignee: Strong H Machinery Technology Co ltd
Current assignee: Strong H Machinery Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-12-13
Anticipated expiration: 2032-08-02

Abstract

The utility model particularly relates to a strip faller drilling chamfer special plane, a circular turntable is arranged on the table-board of a box-type machine body, a turntable motor drives the circular turntable to rotate, 8 workpieces are uniformly distributed on the circular turntable along the circumferential direction to compress/open/close a tool, 8 stations are uniformly distributed on the table-board, and a feeding device, an inspection device, a drilling machine, a hole expanding machine, a front arc hole machine, a workpiece turnover device, a reverse arc hole machine and a discharging device are sequentially and fixedly arranged; a semicircular supporting plate is fixedly arranged below the circular turntable, and convex plates are fixedly arranged at positions corresponding to the workpiece overturning device, the feeding device and the discharging device. The utility model discloses to drill, four processes on reaming, arc hole positive and negative, merge and once process the completion on an automatic special plane, improved production efficiency, reduced the cost of labor.

Description

Special machine for drilling and chamfering strip-shaped needle plate

Technical Field

The utility model relates to an automatic technical field of machining makes specifically is a bar faller drilling chamfer special plane.

Background

As shown in figure 1, the strip needle plate needs four processes of drilling, reaming and arc hole front and back from the punched steel plate to a finished product, and the processes are carried out in a mode of circulating one by one at present, so that the efficiency is low and the cost is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a bar faller drilling chamfer special plane, the technical scheme who takes is:

a special machine for drilling and chamfering a strip-shaped needle plate comprises a box-type machine body, wherein a circular rotary table is arranged on a table top of the box-type machine body in a rotating mode, a rotary table motor fixed below the table top drives the circular rotary table to rotate, 8 workpiece pressing/opening and closing tools are uniformly distributed on the circular rotary table along the circumferential direction, 8 stations are uniformly distributed on the table top in a mode of winding the circumferential direction of the circular rotary table, and a feeding device, an inspection device, a drilling machine, a hole expanding machine, a front arc hole machine, a workpiece overturning device, a back arc hole machine and a discharging device are sequentially and fixedly arranged on the table top from a station right in front; the circular turntable is characterized in that a semicircular supporting plate is fixedly arranged on the table top below the circular turntable, convex plates are fixedly arranged at positions corresponding to the workpiece turning device, the feeding device and the discharging device, when a workpiece pressing/opening/closing tool on the circular turntable reaches the 3 convex plates, the workpiece pressing/opening/closing tool loosens the workpiece to turn over, place or take down the workpiece, and workpieces pressing/opening/closing tools at other positions all press the workpiece to check, drill, expand and clamp front arc holes or back arc holes of the workpiece.

Furthermore, the workpiece pressing/opening/closing tool comprises a first base body and a second base body which are fixedly connected with the circular turntable, wherein an I-shaped groove is formed in the upper end of the first base body, 2 forked slide blocks corresponding to the width of the workpiece are in clearance fit in the I-shaped groove, the lower ends of the forked slide blocks are respectively fixedly connected with a clearance and penetrate through a guide rod of the first base body, the lower ends of the 2 guide rods are fixedly connected with a connecting block, and springs are sleeved between the upper ends of the 2 guide rods, the connecting block and the lower surface of the circular turntable; positioning pins are respectively arranged at the two sides of the I-shaped groove and the round holes corresponding to the two ends of the workpiece; a vertical guide hole and a radial pin hole communicated with the vertical guide hole are formed in the base body II, a sliding rod is in sliding fit in the guide hole, a spiral groove is formed in the sliding rod, the included angle between the starting end and the ending end of the spiral groove and the axis of the sliding rod on the ground is 90 degrees, and a guide pin is fixedly connected in the radial pin hole and extends into the spiral groove; the lower end of the slide bar is in threaded connection with a screw cap, the lower end of the screw cap is provided with a semi-sphere, and a spring is sleeved on the slide bar between the screw cap and the second seat body; the upper end of the sliding rod is fixedly connected with a pressing plate; the circular turntable does not interfere with 2 guide rods, the connecting blocks, the spring slide rods and the screw caps.

Furthermore, an upward pushing cylinder is fixedly arranged on the lower surface of the semicircular supporting plate corresponding to the workpiece turnover device, and a cylinder rod gap of the upward pushing cylinder penetrates through the semicircular supporting plate.

Furthermore, the feeding device comprises a feeding fixed rod fixedly connected with the table top, a feeding upper fixed plate and a feeding lower fixed plate are fixedly arranged on the feeding fixed rod, a feeding stepping motor is fixedly arranged outside the feeding upper fixed plate, and an output shaft of the feeding stepping motor penetrates through the feeding upper fixed plate and is fixedly connected with a connecting rod with a long circular hole; a guide rail plate is fixedly arranged on the inner surface of the feeding upper fixing plate, and a curved slideway in the shape of a bald cover 20886is arranged on the guide rail plate; a feeding linear guide rail is fixedly arranged on the inner surface of the feeding upper fixing plate below the guide rail plate, and the length direction of the feeding linear guide rail is parallel to the radial direction of a corresponding station of the feeding device; a vertical linear guide groove is fixedly arranged on a sliding block which is in sliding fit with the feeding linear guide rail, a cylindrical pin is fixedly arranged at the upper end of the vertical linear guide rail which is in sliding fit with the vertical linear guide groove, and the cylindrical pin penetrates through a long circular hole in the connecting rod and then is in sliding fit with the curved slide way; the lower end of the vertical linear guide rail is fixedly provided with a feeding clamping jaw cylinder, and the feeding clamping jaw cylinder drives 2 feeding clamping jaws below the feeding clamping jaw cylinder to open or close; a groove plate is fixedly arranged on the feeding lower fixing plate, a material dragging plate is in sliding fit in the groove plate, a cylinder body of a material dragging cylinder is fixedly arranged below the groove plate, and a cylinder rod of the material dragging cylinder is connected with the outer end of the material dragging plate; two opposite vertical clamping plates are fixedly connected above the outer ends of the groove plates, and the internal shapes of the two vertical clamping plates are matched with the shapes of the two ends of the workpiece so as to clamp the stacked workpieces; the upper surface of the material dragging plate is provided with a workpiece caulking groove for fitting the outline of the workpiece and a groove for accommodating the claw tip of the feeding clamping claw to enter from the inner end, and the depth of the workpiece caulking groove is equal to the thickness of the workpiece.

Further, the workpiece turnover device comprises a turnover fixing rod fixedly connected with the table top, a turnover fixing plate is fixedly arranged on the turnover fixing rod, a turnover linear guide rail and a cylinder body of a turnover cylinder are fixedly arranged on the turnover fixing plate, and the length direction of the turnover linear guide rail is parallel to the radial direction of a corresponding station of the workpiece turnover device; the material turning slide block which is in sliding fit with the material turning linear guide rail is fixedly provided with a material turning slide plate, the lower surface of the material turning slide plate is connected with a cylinder rod of a material turning cylinder, the upper surface of the material turning slide plate is fixedly provided with a cylinder body of a material turning rotary cylinder, and a rotary shaft of the material turning rotary cylinder is fixedly provided with 2 openable or closable profiling clamping jaws.

Furthermore, the blanking device comprises a blanking fixing rod fixedly connected with the table top, a blanking upper fixing plate and a blanking lower fixing plate are fixedly arranged on the blanking fixing rod, a blanking linear guide rail and a cylinder body of a first blanking cylinder with a horizontal stroke are fixedly arranged on the inner surface of the blanking upper fixing plate, and the length direction of the blanking linear guide rail is parallel to the radial direction of a corresponding station of the blanking device; a blanking sliding block in sliding fit with the blanking linear guide rail is fixedly connected with a cylinder body of a second blanking cylinder with the stroke in the up-down direction, and a cylinder rod of the first blanking cylinder is connected with the blanking sliding block; a cylinder rod of the second blanking cylinder is connected with a cylinder body of the blanking clamping jaw cylinder, and a cylinder rod of the blanking clamping jaw cylinder is connected with 2 blanking clamping jaws; the blanking lower fixing plate is fixedly connected with a workpiece bearing groove plate, the width of an inner groove of the workpiece bearing groove plate is larger than or equal to that of a workpiece, one end, close to the blanking clamping jaw, of the workpiece bearing groove plate is hinged with a workpiece turnover plate, a groove for allowing 2 claw tips of the blanking clamping jaw to enter is formed in the workpiece turnover plate, the lower end of the workpiece turnover plate is fixedly connected with a hinged support, a cylinder body of a third blanking cylinder is hinged to the lower portion of the workpiece bearing groove plate, a cylinder rod of the third blanking cylinder is hinged with the hinged support, the upper surface of the workpiece turnover plate is pushed to be coplanar with the bottom surface of the inner groove of the workpiece bearing groove plate when the third blanking cylinder goes out, and the upper surface of the workpiece turnover plate is pulled to be orthogonal to the bottom surface of the inner groove of the workpiece bearing groove plate when the third blanking cylinder goes back.

Furthermore, the drilling machine, the hole expanding machine, the front arc hole machine and the back arc hole machine all adopt a position adjusting structure of a manual cross sliding table and a servo vertical sliding table.

Furthermore, the structures of the front arc hole machine and the back arc hole machine are completely consistent, and the main shaft adopts a micro main shaft driven by a servo motor.

The control system comprises a computer and sensors arranged on the box type machine body, the feeding device, the checking device, the drilling machine, the hole expanding machine, the front arc hole machine, the workpiece overturning device, the back arc hole machine and/or the discharging device, and the computer controls the execution of the motors and the cylinders in the components and the execution time after receiving signals of the sensors.

Compared with the prior art, the utility model discloses to drill, reaming, four processes of arc hole positive and negative, merge once to process the completion on an automatic special plane, improved production efficiency, reduced the cost of labor.

Drawings

Fig. 1 is a schematic structural diagram of a workpiece to be processed according to the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic structural view of the semicircular supporting plate and the convex plate of the present invention.

Fig. 5 is a schematic structural view of the workpiece compressing/opening/closing tool of the present invention.

Fig. 6 is a schematic structural view of another view angle of the workpiece pressing/opening/closing tool of the present invention.

Fig. 7 is a schematic structural view of the feeding device of the present invention.

Fig. 8 is a schematic view of a partially enlarged structure of the feeding device of the present invention.

Fig. 9 is a schematic structural view of the workpiece turnover device of the present invention.

Fig. 10 is a schematic structural view of the blanking device of the present invention.

Fig. 11 is a schematic view of a local enlarged structure of the blanking device of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2-11, the special machine for bar needle plate drilling and chamfering comprises a box-type machine body 100, a circular turntable 105 is arranged on a table top 101 of the box-type machine body 100, a turntable motor 102 fixed below the table top drives the circular turntable 105 to rotate, 8 workpiece pressing/opening/closing tools 200 are uniformly distributed on the circular turntable 105 along the circumferential direction, 8 stations are uniformly distributed on the table top 101 around the circumferential direction of the circular turntable 105, and a feeding device 300, an inspection device, a drilling machine 400, a hole expanding machine 500, a front arc hole machine 600, a workpiece turnover device 700, a back arc hole machine 800 and a discharging device 900 are sequentially and fixedly arranged on the table top 101 from the station right in front; the semi-circular supporting plate 103 is fixedly arranged on the table top 101 below the circular turntable 105, the convex plates 104 are fixedly arranged at positions corresponding to the workpiece turning device 700, the feeding device 300 and the discharging device 900, when the workpiece pressing/opening/closing tool 200 on the circular turntable 105 reaches the 3 convex plates 104, the workpiece pressing/opening/closing tool 200 loosens the workpiece to turn over, place or take down the workpiece, and the workpieces pressing/opening/closing tool 200 at other positions press the workpiece tightly so as to inspect, drill, expand and form front arc holes or back arc holes of the workpiece.

The workpiece pressing/opening/closing tool 200 comprises a first base body 201 and a second base body 208 which are fixedly connected with the circular turntable 105, wherein an I-shaped groove 206 is formed in the upper end of the first base body 201, 2 fork-shaped sliding blocks 202 corresponding to the width of a workpiece are in clearance fit in the I-shaped groove 206, the lower ends of the fork-shaped sliding blocks 202 and 2 fork-shaped sliding blocks 202 are fixedly connected with a gap respectively and penetrate through a guide rod 203 of the first base body 201, the lower ends of the 2 guide rods 203 are fixedly connected with a connecting block 204, a spring 205 is sleeved between the connecting block 204 and the lower surface of the circular turntable 105; positioning pins 207 are respectively arranged at the two sides of the I-shaped groove 206 and the round holes corresponding to the two ends of the workpiece; a vertical guide hole and a radial pin hole 210 communicated with the vertical guide hole are formed in the second seat body 208, a sliding rod 209 is in sliding fit in the guide hole, a spiral groove is formed in the sliding rod 209, the included angle between the starting end and the ending end of the spiral groove and the axis of the sliding rod on the ground is 90 degrees, and a guide pin is fixedly connected in the radial pin hole 210 and extends into the spiral groove; the lower end of the sliding rod 209 is in threaded connection with a nut 211, the lower end of the nut 211 is provided with a semi-sphere 212, and a spring 205 is sleeved on the sliding rod 209 between the nut 211 and the second seat body 208; the upper end of the sliding rod 209 is fixedly connected with a pressure plate 213; the circular turntable 105 does not interfere with the 2 guide rods 203, the connecting block 204, the spring 205, the sliding rod 209 and the nut 211; when the half ball 212 does not abut on the upper end surface of the convex plate 104, the pressing plate 213 presses the workpiece, and when the half ball 212 abuts on the upper end surface of the convex plate 104, the pressing plate 213 gradually rises to release the workpiece and is turned by 90 degrees to open.

The lower surface of the semicircular supporting plate 103 corresponding to the workpiece turnover device 700 is fixedly provided with the push-up cylinder 106, the gap between the cylinder rods of the push-up cylinder 106 penetrates through the semicircular supporting plate 103, and the push-up cylinder 106 can push the connecting block 204 and the compression spring 205 to move the 2 forked sliding blocks 202 upwards to lift the workpiece when in the process of going out.

The feeding device 300 comprises a feeding fixing rod 301 fixedly connected with the table top 101, a feeding upper fixing plate 302 and a feeding lower fixing plate 303 are fixedly arranged on the feeding fixing rod 301, a feeding stepping motor 304 is fixedly arranged outside the feeding upper fixing plate 302, and an output shaft of the feeding stepping motor 304 penetrates through the feeding upper fixing plate 302 and is fixedly connected with a connecting rod 305 with a long circular hole; a guide rail plate 306 is fixedly arranged on the inner surface of the feeding upper fixing plate 302, and a curved slideway 307 of a bald cover shape 20886is formed on the guide rail plate 306; a feeding linear guide rail 308 is fixedly arranged on the inner surface of the feeding upper fixing plate 302 below the guide rail plate 306, and the length direction of the feeding linear guide rail 308 is parallel to the radial direction of a corresponding station of the feeding device 300; a vertical linear guide groove 310 is fixedly arranged on a sliding block 309 which is in sliding fit with the feeding linear guide rail 308, a cylindrical pin 312 is fixedly arranged at the upper end of a vertical linear guide rail 311 which is in sliding fit with the vertical linear guide groove 310, and the cylindrical pin 312 passes through a long circular hole on the connecting rod 305 and then is in sliding fit with the curved slideway 307; a feeding clamping claw cylinder 313 is fixedly arranged at the lower end of the vertical linear guide rail 311, and the feeding clamping claw cylinder 313 drives 2 feeding clamping claws 314 below the feeding clamping claw cylinder 313 to open or close; a groove plate 315 is fixedly arranged on the feeding lower fixing plate 303, a material dragging plate 316 is in sliding fit with the groove plate 315, a cylinder body of a material dragging cylinder 317 is fixedly arranged below the groove plate 315, and a cylinder rod of the material dragging cylinder 317 is connected with the outer end of the material dragging plate 316; two opposite vertical clamping plates 318 are fixedly connected above the outer ends of the groove plates 315, and the internal shapes of the two vertical clamping plates 318 are matched with the shapes of the two ends of the workpiece so as to clamp the stacked workpieces; the upper surface of the dragging plate 316 is provided with a workpiece caulking groove fitting the contour of a workpiece and a groove 319 for accommodating the entrance of the claw tip of the feeding clamping claw 314 from the inner end, the depth of the workpiece caulking groove is equal to the thickness of the workpiece, when the dragging cylinder 317 drives the caulking groove on the dragging plate 316 to move outwards below the vertical clamping plate 318, the lowest workpiece enters the caulking groove, when the dragging cylinder 317 drives the caulking groove on the dragging plate 316 to move inwards to leave the vertical clamping plate 318, only the workpiece entering the caulking groove is dragged to the position corresponding to 2 feeding clamping claws 314, and the feeding clamping claw cylinder 313 drives 2 feeding clamping claws 314 to grasp the workpiece entering the caulking groove; the feeding stepping motor 304 finally drives 2 feeding clamping jaws 314 to ascend, horizontally move inwards and then descend to the position above the workpiece pressing/opening/closing tool 200 on the corresponding circular turntable 105, the feeding clamping jaw cylinder 313 drives the 2 feeding clamping jaws 314 to loosen the workpiece, and the workpiece is transferred to the workpiece pressing/opening/closing tool 200.

The inspection device uses a high-precision contact digital sensor. The sensor is provided with an air joint, automatic stretching can be achieved, the sensor automatically stretches out and detects after a workpiece rotates to a detection station, and data can be fed back to the front arc hole machine after the height is detected so as to adjust feeding parameters of arc holes.

The workpiece turnover device 700 comprises a turnover fixing rod 701 fixedly connected with the table top 101, a turnover fixing plate 702 is fixedly arranged on the turnover fixing rod 701, a turnover linear guide rail 703 and a cylinder body of a turnover air cylinder 704 are fixedly arranged on the turnover fixing plate 702, and the length direction of the turnover linear guide rail 703 is parallel to the radial direction of a corresponding station of the workpiece turnover device 700; a material turning sliding plate 706 is fixedly arranged on a material turning sliding block 705 which is in sliding fit with the material turning linear guide rail 703, the lower surface of the material turning sliding plate 706 is connected with a cylinder rod of a material turning cylinder 704, the upper surface of the material turning sliding plate 706 is fixedly provided with a cylinder body of a material turning rotary cylinder 707, and 2 openable or closable profiling clamping jaws 708 are fixedly arranged on a rotary shaft of the material turning rotary cylinder 707; when the lower surface of the semi-circular supporting plate 103 corresponding to the station of the workpiece turnover device 700 is fixedly provided with the push-up cylinder 106 to lift the workpiece in the process, the 2 copying clamping jaws 708 can clamp two ends of the workpiece, and the material turnover cylinder 704 drives the 2 copying clamping jaws 708 to turn over for 180 degrees and then release to put the workpiece back to the original position.

The blanking device 900 comprises a blanking fixing rod 901 fixedly connected with the table-board 101, a blanking upper fixing plate 902 and a blanking lower fixing plate 903 are fixedly arranged on the blanking fixing rod 901, a cylinder body of a blanking linear guide rail 904 and a first blanking cylinder 907 with a horizontal stroke is fixedly arranged on the inner surface of the blanking upper fixing plate 902, and the length direction of the blanking linear guide rail 904 is parallel to the radial direction of a corresponding station of the blanking device 900; a blanking slide block 905 in sliding fit with the blanking linear guide rail 904 is fixedly connected with a cylinder body of a second blanking cylinder 906 with the stroke in the up-down direction, and a cylinder rod of a first blanking cylinder 907 is connected with the blanking slide block 905; a cylinder rod of the second blanking cylinder 906 is connected with a cylinder body of the blanking clamping jaw cylinder 908, and a cylinder rod of the blanking clamping jaw cylinder 908 is connected with 2 blanking clamping jaws 909; a workpiece supporting groove plate 910 is fixedly connected to the lower blanking fixing plate 903, the width of an inner groove of the workpiece supporting groove plate 910 is greater than or equal to the width of a workpiece, the workpiece supporting groove plate 910 is hinged to a workpiece turnover plate 911 at one end close to a blanking clamping jaw 909, a groove for allowing the tips of 2 blanking clamping jaws 909 to enter is formed in the workpiece turnover plate 911, a hinged support 912 is fixedly connected to the lower end of the workpiece turnover plate 911, a cylinder body of a third blanking cylinder is hinged to the lower portion of the workpiece supporting groove plate 910, a cylinder rod of the third blanking cylinder 913 is hinged to the hinged support 912, the upper surface of the workpiece turnover plate 911 is pushed to be coplanar with the bottom surface of the inner groove of the workpiece supporting groove plate 910 when the third blanking cylinder 913 goes out, and the upper surface of the workpiece turnover plate 911 is pulled to be orthogonal to the bottom surface of the inner groove of the workpiece supporting groove plate 910 when the third blanking cylinder 913 goes back to turn the workpiece 90 degrees; the first blanking cylinder 907 and the second blanking cylinder 906 are matched to realize that 2 blanking clamping jaws 909 rise, horizontally move inwards and then descend, so that workpieces on the workpiece pressing/opening/closing tool 200 on the corresponding circular turntable 105 are transferred to the workpiece turnover plate 911.

The drilling machine 400, the hole expanding machine 500, the front arc hole drilling machine 600 and the back arc hole drilling machine 800 all adopt a position adjusting structure of a manual cross sliding table and a servo vertical sliding table, and the structure is the prior art.

The front arc hole drilling machine 600 and the back arc hole drilling machine 800 are completely consistent in structure, and the main shaft is a micro main shaft driven by a servo motor.

The automatic hole expanding machine further comprises a control system, wherein the control system comprises a computer and sensors arranged on the box type machine body 100, the feeding device 300, the drilling machine 400, the hole expanding machine 500, the front arc hole drilling machine 600, the workpiece overturning device 700, the back arc hole drilling machine 800 and/or the discharging device 900, and the computer controls the execution of motors and cylinders in all components and the execution time after receiving signals of all the sensors.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

The invention is not described in detail in the prior art or the common general knowledge in the field.

Claims

1. A special machine for drilling and chamfering of a bar-shaped needle plate comprises a box-type machine body (100) and is characterized in that a circular turntable (105) is arranged on a table top (101) of the box-type machine body (100) in a rotating mode, a turntable motor (102) fixed below the table top drives the circular turntable (105) to rotate, 8 workpiece pressing/opening/closing tools (200) are uniformly distributed on the circular turntable (105) along the circumferential direction, 8 stations are uniformly distributed on the table top (101) in the circumferential direction of the circular turntable (105), and a feeding device (300), an inspection device, a drilling machine (400), a hole expanding machine (500), a front arc hole machine (600), a workpiece turning device (700), a back arc hole machine (800) and a discharging device (900) are sequentially and fixedly arranged on the table top (101) from the station right in front; a semicircular supporting plate (103) is fixedly arranged on a table top (101) below a circular turntable (105), convex plates (104) are fixedly arranged at positions corresponding to a workpiece overturning device (700), a feeding device (300) and a discharging device (900), when a workpiece pressing/opening/closing tool (200) on the circular turntable (105) reaches the 3 convex plates (104), the workpiece pressing/opening/closing tool (200) loosens the workpiece to overturn, place or take down the workpiece, and workpieces are pressed/opened/closed by the workpiece pressing/opening/closing tool (200) at other positions to press the workpiece tightly so as to inspect, drill, expand holes, front arc holes or back arc holes of the workpiece.

2. The special machine for drilling and chamfering the bar-shaped needle plate according to claim 1, wherein the workpiece pressing/opening/closing tool (200) comprises a first base body (201) and a second base body (208) which are fixedly connected with the circular turntable (105), an I-shaped groove (206) is formed in the upper end of the first base body (201), 2 forked slide blocks (202) corresponding to the width of the workpiece are in clearance fit in the I-shaped groove (206), the forked slide blocks (202) are forked, the lower ends of the 2 forked slide blocks (202) are fixedly connected with guide rods (203) which penetrate through the first base body (201) in a clearance mode respectively, the lower ends of the 2 guide rods (203) are fixedly connected with connecting blocks (204), and springs (205) are sleeved between the upper end of the 2 guide rods (203), the connecting blocks (204) and the lower surface of the circular turntable (105); positioning pins (207) are respectively arranged at the two sides of the I-shaped groove (206) and the round holes corresponding to the two ends of the workpiece; a vertical guide hole and a radial pin hole (210) communicated with the vertical guide hole are formed in the second seat body (208), a sliding rod (209) is in sliding fit in the guide hole, a spiral groove is formed in the sliding rod (209), the included angle between the starting end and the ending end of the spiral groove and the axis of the sliding rod on the ground is 90 degrees, and a guide pin is fixedly connected in the radial pin hole (210) and extends into the spiral groove; the lower end of the sliding rod (209) is in threaded connection with a nut (211), the lower end of the nut (211) is provided with a semi-spherical ball (212), and a spring (205) is sleeved on the sliding rod (209) between the nut (211) and the second seat body (208); the upper end of the sliding rod (209) is fixedly connected with a pressing plate (213); the circular turntable (105) does not interfere with 2 guide rods (203), a connecting block (204), a spring (205), a sliding rod (209) and a nut (211).

3. The special machine for drilling and chamfering the bar-shaped needle plate as claimed in claim 2, wherein the push-up cylinder (106) is fixedly arranged on the lower surface of the semicircular supporting plate (103) corresponding to the workpiece turnover device (700), and the gap between the cylinder rods of the push-up cylinder (106) penetrates through the semicircular supporting plate (103).

4. The special machine for drilling and chamfering the bar-shaped needle plate as claimed in claim 1, wherein the feeding device (300) comprises a feeding fixing rod (301) fixedly connected with the table top (101), a feeding upper fixing plate (302) and a feeding lower fixing plate (303) are fixedly arranged on the feeding fixing rod (301), a feeding stepping motor (304) is fixedly arranged outside the feeding upper fixing plate (302), and an output shaft of the feeding stepping motor (304) penetrates through the feeding upper fixing plate (302) and is fixedly connected with a connecting rod (305) with a long circular hole; a guide rail plate (306) is fixedly arranged on the inner surface of the feeding upper fixing plate (302), and a curved slideway (307) in the shape of a bald cover is formed on the guide rail plate (306); a feeding linear guide rail (308) is fixedly arranged on the inner surface of the feeding upper fixing plate (302) below the guide rail plate (306), and the length direction of the feeding linear guide rail (308) is parallel to the radial direction of a corresponding station of the feeding device (300); a vertical linear guide groove (310) is fixedly arranged on a sliding block (309) in sliding fit with the feeding linear guide rail (308), a cylindrical pin (312) is fixedly arranged at the upper end of a vertical linear guide rail (311) in sliding fit with the vertical linear guide groove (310), and the cylindrical pin (312) penetrates through a long round hole in the connecting rod (305) and then is in sliding fit with the curved slideway (307); a feeding clamping claw cylinder (313) is fixedly arranged at the lower end of the vertical linear guide rail (311), and the feeding clamping claw cylinder (313) drives 2 feeding clamping claws (314) below the feeding clamping claw cylinder to open or close; a groove plate (315) is fixedly arranged on the feeding lower fixing plate (303), a material dragging plate (316) is in sliding fit with the groove plate (315), a cylinder body of a material dragging cylinder (317) is fixedly arranged below the groove plate (315), and a cylinder rod of the material dragging cylinder (317) is connected with the outer end of the material dragging plate (316); two opposite vertical clamping plates (318) are fixedly connected above the outer ends of the groove plates (315), and the internal shapes of the two vertical clamping plates (318) are matched with the shapes of the two ends of the workpiece so as to clamp the stacked workpieces; the upper surface of the material dragging plate (316) is provided with a workpiece caulking groove fitting the outline of the workpiece and a groove (319) for accommodating the claw tip of the feeding clamping claw (314) from the inner end, and the depth of the workpiece caulking groove is equal to the thickness of the workpiece.

5. The special machine for drilling and chamfering the bar-shaped needle plate as claimed in claim 1, wherein the workpiece turnover device (700) comprises a turnover fixing rod (701) fixedly connected with the table top (101), a turnover fixing plate (702) is fixedly arranged on the turnover fixing rod (701), a turnover linear guide rail (703) and a cylinder body of a turnover cylinder (704) are fixedly arranged on the turnover fixing plate (702), and the length direction of the turnover linear guide rail (703) is parallel to the radial direction of the corresponding station of the workpiece turnover device (700); a material turning sliding plate (706) is fixedly arranged on a material turning sliding block (705) which is in sliding fit with the material turning linear guide rail (703), the lower surface of the material turning sliding plate (706) is connected with a cylinder rod of a material turning cylinder (704), the upper surface of the material turning sliding plate (706) is fixedly provided with a cylinder body of a material turning rotary cylinder (707), and a rotary shaft of the material turning rotary cylinder (707) is fixedly provided with 2 profiling clamping jaws (708) which can be opened or closed.

6. The special machine for drilling and chamfering the bar-shaped needle plate as claimed in claim 1, wherein the blanking device (900) comprises a blanking fixing rod (901) fixedly connected with the table top (101), an upper blanking fixing plate (902) and a lower blanking fixing plate (903) are fixedly arranged on the blanking fixing rod (901), a blanking linear guide rail (904) and a cylinder body of a first blanking cylinder (907) with a horizontal stroke are fixedly arranged on the inner surface of the upper blanking fixing plate (902), and the length direction of the blanking linear guide rail (904) is parallel to the radial direction of a corresponding station of the blanking device (900); a blanking slide block (905) in sliding fit with the blanking linear guide rail (904) is fixedly connected with a cylinder body of a second blanking cylinder (906) with the stroke in the vertical direction, and a cylinder rod of a first blanking cylinder (907) is connected with the blanking slide block (905); a cylinder rod of the second blanking cylinder (906) is connected with a cylinder body of the blanking clamping jaw cylinder (908), and a cylinder rod of the blanking clamping jaw cylinder (908) is connected with 2 blanking clamping jaws (909); a workpiece supporting groove plate (910) is fixedly connected to a lower blanking fixing plate (903), the width of an inner groove of the workpiece supporting groove plate (910) is larger than or equal to the width of a workpiece, one end, close to a blanking clamping jaw (909), of the workpiece supporting groove plate (910) is hinged to a workpiece turnover plate (911), a groove for allowing claw tips of the 2 blanking clamping jaws (909) to enter is formed in the workpiece turnover plate (911), the lower end of the workpiece turnover plate (911) is fixedly connected with a hinge base (912), a cylinder body of a third blanking cylinder (913) is hinged to the lower portion of the workpiece supporting groove plate (910), a cylinder rod of the third blanking cylinder (913) is hinged to the hinge base (912), the upper surface of the workpiece turnover plate (911) is pushed to be coplanar with the bottom surface of the inner groove of the workpiece supporting groove plate (910) when the third blanking cylinder (913) goes out, and the upper surface of the workpiece turnover plate (911) is pulled to be orthogonal to the bottom surface of the workpiece supporting groove plate (910) when the third blanking cylinder (913) returns.

7. The special machine for drilling and chamfering of the bar-shaped needle plate according to claim 1, characterized in that a drilling machine (400), a hole expanding machine (500), a front arc hole machine (600) and a back arc hole machine (800) all adopt a position adjusting structure of a manual cross sliding table and a servo vertical sliding table.

8. The special machine for bar needle plate drilling and chamfering according to claim 1, characterized in that the structures of the front arc hole machine (600) and the back arc hole machine (800) are completely consistent, and the main shaft adopts a micro main shaft driven by a servo motor.

9. The special machine for bar needle plate drilling and chamfering according to claim 1, further comprising a control system, wherein the control system comprises a computer and sensors arranged on the box-type machine body (100), the feeding device (300), the inspection device, the drilling machine (400), the hole expanding machine (500), the front arc hole drilling machine (600), the workpiece turning device (700), the back arc hole drilling machine (800) and/or the blanking device (900), and the computer controls the execution of the motors and cylinders in the components and the execution timing after receiving signals of the sensors.