Twist drill tip turning device

Abstract

The present invention provides a turning device for a twist drill tip, comprising a lathe body, a spindle box and a fixed seat are arranged at the upper end of the lathe body, a fixed plate is arranged horizontally above the lathe body, a concave guide block is installed transversely at the upper end of the fixed plate, a blanking assembly for sequentially blanking materials to the guide block is installed above the guide block, the blanking assembly comprises a connecting plate arranged above the guide block, a material frame located on the upper side of the guide block is symmetrically arranged on the left and right sides of the rear end of the connecting plate, a material hopper located on the upper side of the connecting plate is arranged at the front end of the material frame, and a cylinder is transversely arranged on the rear side of the material frame. The advantages of the present invention are: the round shaft and the cross-moving member are automatically rolled and brushed by the cross-moving member, the round shaft is pushed into the chuck and then the torsion member is driven to rotate a certain angle to allow the round shaft to abut, and the round shaft in the upper hopper is pushed at the same time, the automation degree is high and the needs of mass production are met.

Description

Technical Field

[0001] The invention relates to the technical field of twist drills, in particular to a turning device for a twist drill tip. Background Art

[0002] A twist drill is a tool that drills a circular hole in a workpiece by rotating its axis relative to a fixed axis. It is named because its chip groove is spiral and resembles a twist. The twist drill can be clamped on a manual or electric handheld drilling tool or a drilling machine, milling machine, lathe, or even a machining center. In the process of processing a twist drill, it is necessary to first cut the long round bar into sections of round shafts, and then process one end of the round shaft into a drill tip. Some twist drills have a larger diameter and need to be turned out of the drill tip on an automatic lathe. At present, the staff puts the round shaft into the chuck of the lathe, and then adjusts the length of the round shaft extending out of the chuck. After the lathe turns the drill tip, a new round shaft is replaced. This is time-consuming, labor-intensive, and inefficient, and it is difficult to meet the needs of mass production. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a turning device for the drill tip of a twist drill, which automatically completes the rolling and brushing of a round shaft and a cross-moving part through a cross-moving part, pushes the round shaft into a chuck, and drives the torsion part to rotate a certain angle to allow the round shaft to abut against it, and at the same time pushes the round shaft in the hopper, which has a high degree of automation and meets the needs of mass production.

[0004] The present invention provides a turning device for a twist drill tip, comprising a lathe body 1, wherein a spindle box 2 and a fixed seat 3 are arranged at the upper end of the lathe body 1, a fixed plate 4 is arranged horizontally above the lathe body 1, a concave guide block 5 is transversely installed at the upper end of the fixed plate 4, a blanking assembly for sequentially blanking materials to the guide block 5 is installed above the guide block 5, the blanking assembly comprises a connecting plate 6 arranged above the guide block 5, a material frame 7 located on the upper side of the guide block 5 is symmetrically arranged on the left and right sides of the rear end of the connecting plate 6, a hopper 8 located on the upper side of the connecting plate 6 is arranged at the front end of the material frame 7, and a cylinder 9 is transversely arranged on the rear side of the material frame 7 The piston rod end of the cylinder 9 is connected with a transverse member 10, and a rolling brush assembly 11 is provided at the fixed plate 4 and the hopper 8. A lifting assembly 12 is provided on the hopper 8. A torsion member 13 is twisted at the upper end of the spindle box 2. When the transverse member 10 moves to the left, the transverse member 10 pushes the round shaft that falls on the guide block 5 into the spindle box 2, and the transverse member 10 drives the rolling brush assembly 11 to roll and brush the round shaft and the transverse member 10. At the same time, the transverse member 10 drives the lifting assembly 12 to push the round shaft in the hopper 8. Then the transverse member 10 drives the torsion member 13 to rotate a certain angle and then stop, and the round shaft that moves to the left is against the torsion member 13.

[0005] Furthermore, two adjustment holes are transversely opened at the front end of the connecting plate 6, and the material frame 7 is locked to the connecting plate 6 by locking bolts passing through the adjustment holes.

[0006] Furthermore, the transverse member 10 is connected to the lower push rod 10.2 and the upper push rod 10.3 by a connecting portion 10.1, the connecting portion 10.1 is connected to the piston rod of the cylinder 9, the push rod 10.2 extends into the groove of the guide block 5, a rack 10.4 is laterally arranged in the middle of the lower end of the push rod 10.3, a top 10.5 is arranged on the right side of the upper end of the push rod 10.3, and an inclined surface is arranged on the left side of the top 10.5.

[0007] Furthermore, the hopper 8 is composed of an upper material storage frame connected to a lower baffle, the baffle is attached to the upper end surface of the connecting plate 6, and a guide block for sliding the ejector rod 10.3 is provided at the front end of the baffle.

[0008] Furthermore, the roller brush assembly 11 includes a gear 11.1 matched with the rack 10.4, the rear side of the gear 11.1 is coaxially connected with a first worm wheel 11.2, the left side of the first worm wheel 11.2 is meshed with a worm 11.3, a bearing 11.6 is provided on the left side of the fixed plate 4, the inner ring of the bearing 11.6 is provided with a roller 11.5 coaxially arranged with the chuck of the spindle box 2, the inner wall of the roller 11.5 is provided with a roller brush for rolling the circular shaft and the push rod 10.2, and the outer wall of the roller 11.5 is keyed with a second worm wheel 11.4 meshed with the worm 11.3.

[0009] Furthermore, the lifting assembly 12 includes a stabilizing block 12.1 laterally arranged at the front ends of the two hoppers 8, a slider 12.2 is slidably arranged in the middle of the stabilizing block 12.1 so as to move up and down, a lifting block 12.3 is longitudinally arranged at the top of the slider 12.2 so as to abut against the stabilizing block 12.1, and a roller which can be lifted by the top 10.5 is rotatably arranged at the lower end of the slider 12.2.

[0010] Furthermore, the torsion member 13 is composed of a middle connecting shaft 13.2 connecting a turntable 13.1 on the right and a support plate 13.3 on the left. The turntable 13.1 is provided with an inclined guide surface driven by the push rod 10.3. The top of the spindle box 13.2 is provided with a fixed seat for accommodating the rotation of the connecting shaft 13.2. A torsion spring is connected between the connecting shaft 13.2 and the fixed seat. A sliding hole for accommodating the sliding fit of the push rod 10.3 is transversely opened on the fixed seat.

[0011] Furthermore, a bending plate 13.4 is provided on the connecting shaft 13.2, a guide groove is provided at the lower end of the bending plate 13.4, and a chip cleaning component 14 for cleaning rolled chips and driven by the guide groove is provided on the fixing seat 2.

[0012] Furthermore, the chip cleaning assembly 14 includes a chip collecting frame 14.4 connected to the upper end of the fixed seat 3, the front end of the chip collecting frame 14.4 is connected to a first inclined slide 14.5, a push plate 14.3 is vertically arranged in the chip collecting frame 14.4, the rear end of the push plate 14.3 is longitudinally connected to a slide plate 14.2 slidably fitted in the chip collecting frame 14.4, vertical bars 14.1 are symmetrically arranged on the left and right sides of the upper end of the slide plate 14.2, and a slide column slidably fitted in the guide groove is connected between the two vertical bars 14.1.

[0013] Furthermore, a limiting column 15 for the bending plate 13.4 to abut against is provided at the upper left end of the spindle box 2, and a second inclined slide 16 for catching the falling round shaft is provided above the fixing seat 1.

[0014] The advantages of the present invention are as follows: the round shaft and the cross-moving member are automatically rolled and brushed by the cross-moving member, and after the round shaft is pushed into the chuck, the torsion member is driven to rotate a certain angle to allow the round shaft to abut against, and at the same time, the round shaft in the hopper is pushed up, which has a high degree of automation and meets the needs of mass production; a material drop assembly is composed of a connecting plate, a material frame, and a hopper, which is used to drop materials to the guide block in sequence; the left and right positions of the material frame and the hopper can be adjusted by a locking bolt that passes through an adjustment hole and is screwed to the material frame, so as to meet the needs of twist drills of different lengths. The push rod pushes the round shaft that falls into the groove into the chuck of the main shaft box along the guide block, and the rack drives the roller brush assembly to roll and brush the round shaft and the push rod. The push rod drives the torsion part to rotate a certain angle and then stop, and the top drives the ejection assembly to push the round shaft in the hopper; the rack of the transverse member drives the gear, and the gear drives the roller to rotate with the roller brush through the first worm gear, the worm, and the second worm gear. The rolling roller brushes the round shaft and the push rod entering the roller, so that the debris on the round shaft and the push rod is brushed off to avoid The debris enters the chuck and accumulates; the top of the transverse moving part pushes the roller, the roller moves up with the slider and the push block, and the push block pushes the round shaft at the bottom of the storage frame to avoid blockage; the push rod pushes the round shaft into the chuck of the spindle box and ejects the processed round shaft, then the push rod of the transverse moving part drives the turntable to rotate through the inclined guide surface of the turntable, the turntable rotates a certain angle with the support plate through the connecting shaft, the push rod sliding into the sliding hole blocks the turntable, making the turntable and the support plate immovable, then the round shaft pushes out the chuck and stops after it hits the support plate, and the turntable , the support plate reverses and resets under the action of the torsion spring; the guide groove of the bending plate drives the vertical bar, the slide plate and the push plate forward through the sliding column, and the push plate pushes the chips in the chip collecting frame into the first inclined slide to collect the chips; the torsion piece reverses, and the guide groove of the bending plate drives the vertical bar, the slide plate and the push plate backward and reset through the sliding column, and the push plate fits against the rear wall of the chip collecting frame; when the torsion piece reverses, the bending plate can be pressed against the limit column to prevent the torsion piece from shaking, and the round shaft ejected from the chuck will slide to the second inclined slide for collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the present invention;

[0017] Figure 3 It is a front view of the present invention;

[0018] Figure 4 A top view of the present invention;

[0019] Figure 5 It is a left side view of the present invention;

[0020] Figure 6 It is a three-dimensional diagram of the present invention when a round shaft is placed in a material storage frame;

[0021] Figure 7It is a front view of the transverse moving member of the present invention when it moves to the left and pushes in the round shaft to eject the processed round shaft;

[0022] Figure 8 It is a front view of the transverse moving member of the present invention when it moves to the left to the bottom and the round shaft abuts against the backing plate;

[0023] Fig. 9 It is a left side view when the transverse moving member of the present invention moves to the left to the bottom and the round shaft abuts against the backing plate;

[0024] Fig.10 for Figure 2 A magnified view of part B;

[0025] Fig.11 for Figure 2 Enlarged view of part C;

[0026] Fig.12 for Figure 4 A magnified view of the D portion;

[0027] Fig.13 It is a structural schematic diagram of the transverse shifting member of the present invention;

[0028] Fig.14 It is a schematic structural diagram of the torsion member of the present invention;

[0029] Fig.15 It is a cross-sectional view of the bearing, roller, second worm gear and roller brush of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] See also Figures 1 to 15The present invention provides a turning device for a twist drill tip, which includes a lathe body 1. A spindle box 2 and a fixed seat 3 are arranged at the upper end of the lathe body 1. A slide seat is arranged on the fixed seat. A tool holder with a turning tool installed is arranged on the slide seat. A fixed plate 4 is horizontally arranged above the lathe body 1. A concave guide block 5 is transversely installed on the upper end of the fixed plate 4. A blanking assembly for sequentially blanking materials to the guide block 5 is installed above the guide block 5. The blanking assembly includes a connecting plate 6 arranged above the guide block 5. Material frames 7 located on the upper side of the guide block 5 are symmetrically arranged on the left and right sides of the rear end of the connecting plate 6. A hopper 8 located on the upper side of the connecting plate 6 is arranged at the front end of the material frame 7. The hopper 8 is composed of an upper material storage frame connected to a lower baffle. The baffle is attached to the It is engaged with the upper end surface of the connecting plate 6, and a guide block for slidingly fitting the ejector rod 10.3 is provided at the front end of the baffle. A cylinder 9 is laterally provided on the rear side of the material frame 7, and a transverse moving part 10 is connected to the piston rod end of the cylinder 9. A rolling brush assembly 11 is provided at the fixed plate 4 and the hopper 8, and a ejector assembly 12 is provided on the hopper 8. A torsion piece 13 is twisted at the upper end of the main shaft box 2. When the transverse moving part 10 moves to the left, the transverse moving part 10 pushes the round shaft that falls on the guide block 5 into the main shaft box 2, and the transverse moving part 10 drives the rolling brush assembly 11 to roll and brush the round shaft and the transverse moving part 10. At the same time, the transverse moving part 10 drives the ejector assembly 12 to eject the round shaft in the hopper 8, and then the transverse moving part 10 drives the torsion piece 13 to rotate a certain angle and then stop, and the left-moved round shaft abuts against the torsion piece 13. Put the round shaft into the material storage frame, arrange the round shafts at the bottom in order, and the cylinder drives the transverse moving part to move left. The transverse moving part pushes the round shaft that falls on the guide block into the chuck of the spindle box. The pushed round shaft is ejected from the chuck. The transverse moving part drives the roller brush assembly to roll and brush the round shaft and the transverse moving part to prevent debris from entering the chuck and accumulating. At the same time, the transverse moving part drives the ejecting assembly to push the round shaft at the bottom of the material storage frame to avoid blockage. Then the transverse moving part drives the torsion part to rotate a certain angle and then stop. The torsion part blocks the left side of the round shaft pushed to the left. The transverse moving part continues to push the round shaft to the left and makes the round shaft pushed out of the chuck stop after it hits the torsion part. The chuck of the spindle box clamps the round shaft. Then the cylinder drives the transverse moving part to move right to disengage from the chuck for reset. The transverse moving part disengages from the torsion part and the ejecting assembly. The torsion part and the ejecting assembly are reset. The subsequent round shaft falls onto the guide block, and the slide of the lathe moves backward with the turning tool to perform drill tip turning on the round shaft on the chuck. After turning is completed, the slide of the lathe moves forward with the turning tool to reset, and the chuck releases the round shaft. The subsequent round shaft pushed in will eject the processed round shaft.

[0032] Two adjustment holes are transversely opened at the front end of the connecting plate 6, and the material frame 7 is locked to the connecting plate 6 by locking bolts passing through the adjustment holes. The locking bolts passing through the adjustment holes and screwed to the material frame can adjust the left and right positions of the material frame and the hopper to meet the needs of twist drills of different lengths.

[0033] See also Figure 1 , Fig.13The traverse member 10 is connected to the push rod 10.2 on the lower side and the push rod 10.3 on the upper side by the connecting portion 10.1. The diameter of the push rod is smaller than the circular shaft. When the circular shaft is clamped by the chuck, the push rod can continue to withdraw from the chuck. The connecting portion 10.1 is connected to the piston rod of the cylinder 9. The push rod 10.2 extends into the groove of the guide block 5. A rack 10.4 is arranged horizontally in the middle of the lower end of the push rod 10.3. A top 10.5 is arranged on the right side of the upper end of the push rod 10.3. An inclined surface is arranged on the left side of the top 10.5. The push rod pushes the circular shaft that falls into the groove into the chuck of the spindle box along the guide block. The rack drives the roller brush assembly to roll and brush the circular shaft and the push rod. The push rod drives the torsion member to rotate a certain angle and then stop moving, so that the torsion member is located on the left side of the pushed circular shaft. The left-moving circular shaft abuts against the torsion member for limiting. The top drives the top material assembly to push the circular shaft in the hopper to avoid blocking.

[0034] The roller brush assembly 11 includes a gear 11.1 matched with the rack 10.4, the rear side of the gear 11.1 is coaxially connected with a first worm wheel 11.2, the left side of the first worm wheel 11.2 is meshed with a worm 11.3, the upper and lower ends of the worm are respectively provided with teeth meshed with the first worm wheel and the second worm wheel, a bearing 11.6 is provided on the left side of the fixed plate 4, the inner ring of the bearing 11.6 is provided with a roller 11.5 coaxially arranged with the chuck of the spindle box 2, the inner wall of the roller 11.5 is provided with a roller brush for rolling the round shaft and the push rod 10.2, and the outer wall of the roller 11.5 is keyed with a second worm wheel 11.4 meshed with the worm 11.3. When the transverse moving part moves to the left, the rack of the transverse moving part drives the gear, the gear drives the first worm wheel to rotate, the first worm wheel drives the worm to rotate, the worm drives the second worm wheel to rotate, and the second worm wheel drives the roller with the roller brush to rotate. The rolling roller brushes the round shaft and the push rod entering the roller, so that the debris on the round shaft and the push rod is brushed off to prevent the debris from entering the chuck and accumulating.

[0035] The material ejection assembly 12 comprises a stabilizing block 12.1 which is transversely arranged at the front end of the two hoppers 8, a slider 12.2 is slidably arranged in the middle of the stabilizing block 12.1 so as to move up and down, a ejection block 12.3 which is longitudinally arranged at the top of the slider 12.2 and a roller which can be lifted by the top 10.5 is rotatably arranged at the bottom of the slider 12.2. When the traverse member moves to the left, the top of the traverse member pushes the roller, the roller moves up with the slider and the ejection block, and the ejection block pushes the circular shaft at the bottom of the material storage frame to avoid blocking, when the traverse member moves to the right, the top of the traverse member is separated from the roller, the roller, the slider and the ejection block are lowered and reset under the action of gravity, and the ejection block is mounted on the stabilizing block.

[0036] See also Figure 6 , Fig.14The torsion member 13 is composed of a connecting shaft 13.2 in the middle, connecting a turntable 13.1 on the right, and a support plate 13.3 on the left. The turntable 13.1 is provided with an inclined guide surface driven by the ejector 10.3. The top of the spindle box 13.2 is provided with a fixed seat for accommodating the rotation of the connecting shaft 13.2. The connecting shaft only rotates but does not move. A torsion spring is connected between the connecting shaft 13.2 and the fixed seat. The fixed seat is provided with a sliding hole for accommodating the sliding fit of the ejector 10.3 in a transverse direction. Considering the load and deformation of the ejector, a load seat located on the right side of the turntable can be provided on the right side of the top of the spindle box. The load seat is provided with a sliding hole for accommodating the sliding fit of the ejector, so that the ejector first enters the load seat and then drives the turntable. When the transverse moving part moves to the left, the pushing rod pushes the round shaft into the chuck of the spindle box and ejects the processed round shaft. Then the push rod of the transverse moving part drives the turntable to rotate through the inclined guide surface of the turntable. The turntable rotates a certain angle with the back plate through the connecting shaft, so that the back plate is located on the left side of the round shaft. The push rod sliding into the sliding hole blocks the turntable, so that the turntable and the back plate are immobile. Then the round shaft pushes out the chuck and stops after it hits the back plate. The cylinder drives the transverse moving part to move right and reset. The push rod is separated from the turntable, and the turntable and the back plate are reversed and reset under the action of the torsion spring.

[0037] A bending plate 13.4 is arranged on the connecting shaft 13.2, a guide groove is opened at the lower end of the bending plate 13.4, and a chip cleaning component 14 for cleaning rolled chips and driven by the guide groove is arranged on the fixing seat 2.

[0038] See also Fig.11 The chip cleaning assembly 14 includes a chip collecting frame 14.4 connected to the upper end of the fixed seat 3, the front end of the chip collecting frame 14.4 is connected to a first inclined slide 14.5, a push plate 14.3 is vertically arranged in the chip collecting frame 14.4, the rear end of the push plate 14.3 is longitudinally connected to a slide plate 14.2 which is slidably matched with the chip collecting frame 14.4, vertical bars 14.1 are symmetrically arranged on the left and right sides of the upper end of the slide plate 14.2, and a slide column which is slidably matched with the guide groove is connected between the two vertical bars 14.1. The chips processed by the lathe will fall into the chip collecting frame, when the torsion piece rotates a certain angle, the guide groove of the bending plate drives the vertical bar, the slide plate and the push plate to move forward through the slide column, and the push plate pushes the chips in the chip collecting frame into the first inclined slide to collect the chips, when the torsion piece is reversed, the guide groove of the bending plate drives the vertical bar, the slide plate and the push plate to move backward and reset through the slide column, and the push plate fits with the rear wall of the chip collecting frame.

[0039] The upper left end of the spindle box 2 is provided with a limit column 15 for the bending plate 13.4 to abut against, and a second inclined slide 16 for catching the round shaft that is ejected is provided above the fixed seat 1. When the torsion piece is reversed, the bending plate can abut against the limit column to prevent the torsion piece from shaking, and the round shaft that is ejected from the chuck will slide to the second inclined slide for collection.

[0040] The specific working process of the present invention is as follows: put the round shaft into the storage frame, and arrange the round shafts at the bottom in order, such as Figure 6As shown, the cylinder drives the transverse moving part to move left, and the transverse moving part pushes the round shaft that falls on the guide block into the chuck of the main shaft box, and the pushed round shaft pushes out the processed round shaft in the chuck, and the rack of the transverse moving part drives the gear, and the gear drives the roller with the roller brush to rotate through the first worm gear, the worm, and the second worm gear, and the rolling roller brushes the round shaft and the push rod that enter the roller, so that the debris on the round shaft and the push rod is brushed off to prevent the debris from entering the chuck and accumulating. At the same time, the top of the transverse moving part pushes the roller, and the roller moves the slider and the push block upward, and the push block pushes the round shaft at the bottom of the storage frame to prevent it from being blocked. Figure 7 As shown, the top rod of the transverse moving member then drives the turntable to rotate through the inclined guide surface of the turntable, and the turntable rotates a certain angle with the backing plate and the bending plate through the connecting shaft, so that the backing plate is located on the left side of the circular shaft, and the top rod sliding into the sliding hole blocks the turntable, so that the turntable and the backing plate are immobile, and the guide groove of the bending plate drives the vertical bar, the slide plate, and the push plate to move forward through the slide column, and the push plate pushes the chips in the chip collecting frame into the first inclined slideway to collect the chips, and then the circular shaft is pushed out of the chuck and stops after it hits the backing plate, as shown in FIG. Figure 8 , 9 As shown, the chuck of the spindle box clamps the round shaft, and then the cylinder drives the transverse moving part to move right and reset, the push rod disengages from the turntable, and the turntable and the support plate reverse and reset under the action of the torsion spring, and the guide groove of the bending plate drives the vertical bar, the slide plate, and the push plate to move backward and reset through the slide column, and the push plate fits with the back wall of the chip collection frame, and the top of the transverse moving part disengages from the roller, and the roller, the slide block, and the ejector block descend and reset under the action of gravity, and the ejector block is supported on the stable block, and the slide seat of the lathe moves backward with the turning tool to turn the round shaft on the chuck for drilling, and the chips generated by turning fall into the chip collection frame. After turning is completed, the slide seat of the lathe moves forward with the turning tool to reset, and the chuck releases the round shaft, and the subsequent round shaft pushed in will eject the processed round shaft, and the round shaft ejected from the chuck will slide to the second inclined slide for collection.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A turning device for a twist drill tip, comprising a lathe body, wherein a spindle box and a fixing seat are arranged at the upper end of the lathe body, and characterized in that: A fixing plate is horizontally arranged above the lathe body, a concave guide block is transversely installed on the upper end of the fixing plate, a blanking assembly for sequentially dropping materials onto the guide block is installed above the guide block, the blanking assembly includes a connecting plate arranged above the guide block, material frames located on the upper side of the guide block are symmetrically arranged on the left and right sides of the rear end of the connecting plate, a material hopper located on the upper side of the connecting plate is arranged at the front end of the material frame, a cylinder is transversely arranged on the rear side of the material frame, a transverse moving part is connected to the end of the piston rod of the cylinder, a rolling brush assembly is arranged at the fixing plate and the hopper, and a A material ejection assembly is arranged, and a torsion piece is twisted on the upper end of the spindle box. When the transverse moving piece moves to the left, the transverse moving piece pushes the round shaft that falls on the guide block into the spindle box, and the transverse moving piece drives the rolling brush assembly to roll and brush the round shaft and the transverse moving piece. At the same time, the transverse moving piece drives the material ejection assembly to push the round shaft in the hopper. Then the transverse moving piece drives the torsion piece to rotate a certain angle and then stop. The round shaft that moves to the left abuts against the torsion piece. The transverse moving piece is connected to the ejection rod on the lower side and the ejection rod on the upper side by a connecting part. The connecting part is connected to the piston rod of the cylinder. The ejection rod extends into the groove of the guide block. A rack is laterally arranged in the middle of the lower end of the push rod, a top is arranged on the right side of the upper end of the push rod, and an inclined surface is arranged on the left side of the top. The rolling brush assembly includes a gear matched with the rack, a first worm wheel is coaxially connected to the rear side of the gear, a worm is meshed with the left side of the first worm wheel, a bearing is arranged on the left side of the fixed plate, a roller coaxially arranged with the chuck of the spindle box is arranged on the inner ring of the bearing, a rolling brush for rolling the round shaft and the push rod is arranged on the inner wall of the roller, a second worm wheel meshed with the worm is keyed to the outer wall of the roller, and the push rod assembly includes The present invention comprises a stabilizing block which is laterally arranged at the front end of the two hoppers, a sliding block is slidably provided in the middle of the stabilizing block so as to move up and down, a top block which is longitudinally arranged at the top of the sliding block and abuts against the stabilizing block, a roller which can be lifted up by the top is rotatably provided at the lower end of the sliding block, the torsion member is composed of a middle connecting shaft connecting a turntable on the right and a support plate on the left, the turntable is provided with an inclined guide surface driven by the push rod, a fixed seat which allows the connecting shaft to rotate is provided at the top of the spindle box, a torsion spring is connected between the connecting shaft and the fixed seat, and a sliding hole which allows the push rod to slide is transversely provided on the fixed seat.

2. A twist drill tip turning device as claimed in claim 1, characterized in that: Two adjustment holes are transversely opened at the front end of the connecting plate, and the material frame is locked to the connecting plate by locking bolts passing through the adjustment holes.

3. A twist drill tip turning device as claimed in claim 1, characterized in that: The hopper is composed of an upper material storage frame connected to a lower baffle, the baffle is attached to the upper end surface of the connecting plate, and a guide block for sliding the ejector rod is arranged at the front end of the baffle.

4. A twist drill tip turning device as claimed in claim 1, characterized in that: A bending plate is arranged on the connecting shaft, a guide groove is opened at the lower end of the bending plate, and a chip cleaning component for cleaning rolled chips and driven by the guide groove is arranged on the fixing seat.

5. A twist drill tip turning device as claimed in claim 4, characterized in that: The chip cleaning assembly includes a chip collecting frame connected to the upper end of the fixed seat, the front end of the chip collecting frame is connected to a first inclined slide, a push plate is vertically arranged in the chip collecting frame, the rear end of the push plate is longitudinally connected to a slide plate slidably fitted in the chip collecting frame, vertical bars are symmetrically arranged on the left and right sides of the upper end of the slide plate, and a slide column slidably fitted in the guide groove is connected between the two vertical bars.

6. A twist drill tip turning device as claimed in claim 4, characterized in that: A limiting column for the bending plate to abut against is arranged at the upper left end of the main shaft box, and a second inclined slideway for catching the falling round shaft is arranged above the fixing seat.

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