Tapping machine with quick feeding assembly

Abstract

The invention relates to the technical field of tapping machines, in particular to a tapping machine with a quick feeding assembly, which comprises a terminal tapping feeding disc, a positioning assembly, a tapping tool and a sliding supporting assembly, a chip removal cavity groove is formed in one side of the terminal tapping feeding disc, quick feeding is performed through a telescopic push rod, and the positioning assembly is arranged on the sliding supporting assembly. When the U-shaped screw-joint terminal moves to the position of the positioning movable box and the mounting support, the position of the U-shaped screw-joint terminal can be positioned and kept under the action of the positioning assembly, and then the tapping positions of the U-shaped screw-joint terminal and the tapping tool are further intensively positioned under the matching action of the tapping tool and the sliding supporting assembly, so that the positioning accuracy of the U-shaped screw-joint terminal is improved, and the service life of the U-shaped screw-joint terminal is prolonged. In addition, the U-shaped screw joint terminal needs to be matched with the elastic positioning of the pre-positioning block before being processed, so that the percent of pass is higher when the U-shaped screw joint terminal is processed, and the processing quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tapping machines, in particular to a tapping machine with a fast feeding component. Background Art

[0002] Tapping machine is a kind of mechanical processing equipment that processes internal threads, screws or thread buckles on the inner side of holes of various parts with different specifications of through holes or blind holes, such as machine housings, equipment end faces, nuts, flanges, etc. In the field of terminal processing, U-shaped threaded terminals need to be continuously and quickly fed through a fast feeding mechanism during production; The utility model with the existing publication number CN205629563U discloses a precision automatic tapping machine for terminal blocks, including a machine platform. The above scheme realizes fully automatic tapping processing of terminal blocks through the mutual cooperation of four drill bits and four workpiece fixing grooves, and the assistance between various mechanisms, thereby improving the tapping processing efficiency. However, since the terminal tapping machine with continuous feeding mainly pushes the terminals continuously through cylinders when continuously feeding the terminals, the terminals are moved to the bottom of the tapping tool. However, since the terminals are directly pushed to the bottom of the tool, due to the stability and error of the pushing mechanism, as well as the mutual cooperation between the processing tool and the cylinders, problems such as tapping errors or missing tapping often occur during processing, affecting production quality. Summary of the invention

[0003] The object of the present invention is to provide a tapping machine with a fast feeding assembly to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a tapping machine with a fast feeding assembly, comprising: A terminal tapping loading tray, wherein a chip removal cavity groove is provided on one side of the terminal tapping loading tray, terminal slideways are provided on both sides of the upper end of the chip removal cavity groove, a U-shaped screw terminal is horizontally provided in the chip removal cavity groove, and the lower ends of both sides of the U-shaped screw terminal are respectively inserted into two U-shaped screw terminals; A positioning assembly, wherein the positioning assembly is arranged in the chip removal cavity groove through a sliding support assembly, the sliding support assembly includes a mounting support and two sliding support tubes, the positioning assembly includes a positioning movable box, a pre-positioning block and an adjustment butt joint pipe, the positioning movable box is slidably arranged above the mounting support, the pre-positioning block is vertically movably plugged into the upper end of the positioning movable box, the upper end of the pre-positioning block is plugged into the lower end of the U-shaped screw terminal, and the adjustment butt joint pipe is vertically movably plugged into the upper end of the pre-positioning block; A tapping tool is provided on one side of the U-shaped screw terminal. The tapping tool is located above the tapping hole, and the upper end of the butt-joint tube is adjusted to be plugged into the lower end of the tapping tool.

[0005] Preferably, a sliding groove is provided at the upper end of the mounting support, and the lower end of the positioning movable box is vertically inserted into the sliding groove. Rod grooves are provided at the upper ends of both sides of the mounting support located in the sliding groove. Two sliding support tubes are horizontally arranged in the two rod grooves respectively. Sliding sleeves are horizontally provided on both sides of the positioning movable box, and the two sliding sleeves are slidably sleeved on the two sliding support tubes respectively.

[0006] Preferably, a first-level telescopic groove is provided in the positioning movable box, a piston disk is horizontally provided at the upper end of the first-level telescopic groove, a protruding block is provided at the center of the lower end of the piston disk, a plurality of adaptive guide grooves are provided at the lower end of the protruding block, a plurality of retaining guide rods are vertically and symmetrically provided at the center of the lower end of the first-level telescopic groove, the upper ends of the plurality of retaining guide rods are respectively movably inserted into the plurality of adaptive guide grooves, a first spring is provided at the center of the lower end of the piston disk, and the first spring is sleeved with the protruding block.

[0007] Preferably, the pre-positioning block is vertically arranged at the upper center of the piston disk, the upper end of the pre-positioning block movably passes through the upper end of the positioning movable box, the two side surfaces of the upper end of the pre-positioning block passing through the positioning movable box are inclined surfaces, the upper end of the pre-positioning block is inserted into the U-shaped groove of the U-shaped screw terminal, the width of the pre-positioning block is equal to the width of the U-shaped groove of the U-shaped screw terminal, and abutment blocks are provided on both sides of the pre-positioning block outside the positioning movable box. When the pre-positioning block rises to the maximum extent, the two abutment blocks respectively abut against the lower ends of the two side walls of the U-shaped screw terminal.

[0008] Preferably, a plurality of second springs are symmetrically provided at the upper end of the piston disk, and the upper ends of the plurality of second springs are respectively abutted against the upper end surface in the primary telescopic groove. In a natural state, the combined rebound force of the plurality of second springs and the rebound force of the first spring can offset each other. At this time, the upper end of the pre-positioning block with an inclined surface is placed in the U-shaped groove of the U-shaped screw terminal.

[0009] Preferably, a secondary telescopic groove is opened in the center of the pre-positioning block, a reciprocating piston is horizontally provided at the upper end of the secondary telescopic groove, a support sleeve is vertically provided at the center of the upper end of the reciprocating piston, the support sleeve movably passes through the upper end of the pre-positioning block, a third spring is provided at the upper end of the reciprocating piston, an adjustment docking tube is rotatably provided in the support sleeve, and the upper end of the adjustment docking tube passes through the tapped hole of the U-shaped screw terminal.

[0010] Preferably, an access groove is opened on one side of the mounting support, and the positioning movable box is located on one side of the access groove and connected to the first-level telescopic groove and is provided with a source gas joint. The lower end of the second-level telescopic groove passes through the protruding block and is connected to the first-level telescopic groove. The center of the adjustment docking tube passes through the reciprocating piston and is connected to the second-level telescopic groove, and the diameter of the adjustment docking tube is smaller than the diameter of the second-level telescopic groove connected to the first-level telescopic groove.

[0011] Preferably, a conical fine-tuning groove is provided at the center of the lower end of the tapping tool, a heat dissipation center groove is provided at the center of the tapping tool, a diversion groove is provided at the upper end of the heat dissipation center groove, a plurality of oblique blowing holes are provided in the diversion groove obliquely downwardly penetrating therein, the upper end of the adjustment docking tube is inserted into the conical fine-tuning groove, and a plurality of side blowing holes are provided in the chip removal cavity groove above the terminal slide and on one side close to the tapping tool.

[0012] Preferably, an air push joint is provided on one side of the first-level telescopic groove, an air push joint is provided with an air push piston groove, a piston disc is located on one side of the air push joint and a piston rod is vertically provided, the lower end of the piston rod is movably inserted into the air push piston groove through a sealing ring, an oil storage tank is provided on one side of the mounting support, and an air push hose is connected and inserted between one side of the air push piston groove and one side of the upper end of the oil storage tank.

[0013] Preferably, one side of the sliding support tube is connected to the oil storage tank, and a lifting oil tank is opened at the lower end. A one-way valve is provided on the side of the lifting oil tank close to the oil storage tank. A plurality of oil supply holes are opened through the upper end of the sliding support tube, and a sliding sleeve is sleeved on one side of the sliding support tube to cover the plurality of oil supply holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When the U-shaped screw terminal is used for tapping, the material is quickly loaded through the telescopic push rod. When the U-shaped screw terminal moves to the positioning movable box and the mounting support position, the position of the U-shaped screw terminal can be positioned and maintained under the action of the positioning component. Then, under the cooperation of the tapping tool and the sliding support component, the tapping position of the U-shaped screw terminal and the tapping tool is further and strengthened to avoid the problem of missed tapping caused by tapping error. In addition, the U-shaped screw terminal needs to cooperate with the elastic positioning of the pre-positioning block before processing, so that the qualified rate of the U-shaped screw terminal during processing is higher and the processing quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of part A; Figure 4 A side cross-sectional schematic diagram of the mounting support connection of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of part B; Figure 6 For the present invention Figure 5 Schematic diagram of the C part; Figure 7 For the present invention Figure 4 Schematic diagram of the D part; Figure 8 For the present invention Figure 7 Schematic diagram of part E; Fig. 9 This is a schematic diagram of the connection structure between the positioning activity box and the mounting support of the present invention; Fig.10 A side cross-sectional view of the structure for lifting the oil tank of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the F part; Fig.12 This is a schematic diagram of the structure of the positioning activity box of the present invention; Fig.13 This is a schematic diagram of the support structure of the present invention; Fig.14 It is a schematic diagram of the pre-positioning block structure of the present invention.

[0016] In the figure: terminal tapping loading plate 1, chip removal cavity groove 2, terminal slide 3, U-shaped screw terminal 4, mounting support 5, positioning movable box 6, primary telescopic groove 7, piston disc 8, adaptation guide groove 9, retaining guide rod 10, first spring 11, second spring 12, pre-positioning block 13, secondary telescopic groove 14, reciprocating piston 15, support sleeve 16, adjustment docking tube 17, third spring 18, tapping tool 19, conical fine-tuning groove 20, heat dissipation center groove 21, oblique blowing hole 22, source air joint 23, side blowing hole 24, push air joint 25, push air piston groove 26, piston rod 27, oil storage tank 28, push air hose 29, sliding support tube 30, sliding sleeve 31, oil replenishing hole 32, lifting oil groove 33, one-way valve 34. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Please see attached Figure 1-14 , this application provides the following technical solutions.

[0019] Embodiment 1: A tapping machine with a fast feeding component includes a terminal tapping loading tray 1, a chip removal cavity 2 is provided on one side of the terminal tapping loading tray 1, terminal slideways 3 are provided on both sides of the upper end of the chip removal cavity 2, a U-shaped screw-connected terminal 4 is horizontally arranged in the chip removal cavity 2, and the lower ends of both sides of the U-shaped screw-connected terminal 4 are respectively inserted into two U-shaped screw-connected terminals 4, and the U-shaped screw-connected terminal 4 can be quickly pushed into the terminal slideway 3 through the slideway provided on the terminal tapping loading tray 1 through a telescopic push rod, and is in the tapping position, waiting for processing operation.

[0020] A positioning component is set to position the U-shaped screw terminal 4. The positioning component is arranged in the chip removal cavity 2 through a sliding support component. The sliding support component includes a mounting support 5 and two sliding support tubes 30. A sliding groove is opened at the upper end of the mounting support 5. The lower end of the positioning movable box 6 is vertically inserted into the sliding groove. The mounting support 5 is located in the sliding groove and has rod grooves opened at the upper ends on both sides. The two sliding support tubes 30 are respectively horizontally arranged in the two rod grooves. Sliding sleeves 31 are horizontally arranged on both sides of the positioning movable box 6, and the two sliding sleeves 31 are respectively slidably sleeved with the two sliding support tubes 30. The positioning movable box 6 can perform horizontal micro-sliding adjustment in the mounting support 5 to adapt to the processing position.

[0021] The positioning assembly includes a positioning movable box 6, a pre-positioning block 13 and an adjustment butt joint pipe 17. The positioning movable box 6 is slidably arranged above the mounting support 5. The pre-positioning block 13 is vertically movably plugged into the upper end of the positioning movable box 6. The upper end of the pre-positioning block 13 is plugged into the lower end of the U-shaped screw terminal 4. The adjustment butt joint pipe 17 is vertically movably plugged into the upper end of the pre-positioning block 13. A primary telescopic slot 7 is provided in the positioning movable box 6. A piston disc 8 is horizontally provided at the upper end of the primary telescopic slot 7. A protruding block is provided at the center of the lower end of the piston disc 8. A number of adapting guide grooves 9 are provided at the lower end of the protruding block. A number of retaining guide rods 10 are vertically symmetrically provided at the center of the lower end of the primary telescopic slot 7. The upper ends of the number of retaining guide rods 10 are respectively movably plugged into the number of adapting guide grooves 9. A first spring 11 is provided at the center of the lower end of the piston disc 8, and the first spring 11 is sleeved with the protruding block. The piston disc 8 can move up and down in the primary telescopic slot 7. The first spring 11 serves as a position support for the piston disc 8 in a natural state. The pre-positioning block 13 is vertically arranged at the center of the upper end of the piston disc 8. The upper end of the pre-positioning block 13 movably penetrates the upper end of the positioning movable box 6. The two side surfaces of the upper end of the pre-positioning block 13 penetrating the positioning movable box 6 are inclined surfaces. The upper end of the pre-positioning block 13 is inserted into the U-shaped groove of the U-shaped screw terminal 4. The width of the pre-positioning block 13 is equal to the width of the U-shaped groove of the U-shaped screw terminal 4. The pre-positioning block 13 is located on both sides outside the positioning movable box 6. Abutment blocks are provided. When the pre-positioning block 13 rises to the maximum extent, the two abutment blocks respectively abut against the lower ends of the two side walls of the U-shaped screw terminal 4. The upper end of the piston disc 8 is symmetrically provided with a plurality of second springs 12, and the upper ends of the plurality of second springs 12 respectively abut against the upper end surface of the first-level telescopic groove 7 , in a natural state, the combined resilience of the plurality of second springs 12 and the resilience of the first spring 11 can offset each other, at this time, the upper end of the pre-positioning block 13 with the inclined surface is placed in the U-shaped groove of the U-shaped screw terminal 4, when the U-shaped screw terminal 4 is pushed to the position of the pre-positioning block 13 by the telescopic rod, at this time, the height of the lower end surface of the U-shaped screw terminal 4 is equal to the horizontal height of the middle part of the inclined surface of the pre-positioning block 13, when the U-shaped screw terminal 4 is pushed to the position of the pre-positioning block 13 and continues to move, the pre-positioning block 13 will press down under the action of the inclined surface, and then the pre-positioning block 13 will rebound and be inserted into the U-shaped groove of the U-shaped screw terminal 4 under the elastic support of the first spring 11, so as to perform basic positioning of the U-shaped screw terminal 4; When the pre-positioning block 13 rises, the pre-positioning block 13 adjusts the position of the U-shaped screw terminal 4 under the action of the two inclined surfaces, and then the two vertical surfaces of the pre-positioning block 13 contact the vertical side surfaces in the U-shaped groove of the U-shaped screw terminal 4, and the U-shaped screw terminal 4 is positioned and maintained, thereby performing advanced positioning and stable maintenance of the U-shaped screw terminal 4.

[0022] A secondary telescopic slot 14 is provided in the center of the pre-positioning block 13, a reciprocating piston 15 is provided horizontally at the upper end of the secondary telescopic slot 14, a support sleeve 16 is provided vertically at the upper end center of the reciprocating piston 15, the support sleeve 16 is movably penetrated through the upper end of the pre-positioning block 13, a third spring 18 is provided at the upper end of the reciprocating piston 15, an adjustment butt pipe 17 is provided for rotation in the support sleeve 16, and the upper end of the adjustment butt pipe 17 is provided through the tapping hole of the U-shaped screw terminal 4, an access slot is provided on one side of the mounting support 5, a positioning movable box 6 is located on one side of the access slot and is connected to the primary telescopic slot 7 with a source gas joint 23, the lower end of the secondary telescopic slot 14 penetrates the convex block and is connected The first-level telescopic groove 7 is set, and the center of the adjustment butt joint 17 passes through the reciprocating piston 15 and connects to the second-level telescopic groove 14, and the diameter of the adjustment butt joint 17 is smaller than the diameter of the second-level telescopic groove 14 connecting to the first-level telescopic groove 7. When the source gas connector 23 is fed with high-pressure gas, a part of the high-pressure gas is discharged from the adjustment butt joint 17. When the flow rate of the high-pressure gas fed into the first-level telescopic groove 7 is greater than the discharge flow rate of the adjustment butt joint 17, the high-pressure gas will first push the reciprocating piston 15, the support sleeve 16 and the adjustment butt joint 17 to lift, and then as the gas pressure continues to increase, the piston disc 8 will drive the pre-positioning block 13 to lift, and the U-shaped screw terminal 4 is centered and positioned; On the contrary, when the high pressure gas is cut off, the butt joint 17 and the reciprocating piston 15 are adjusted to retract into the pre-positioning block 13 under the elastic action of the third spring 18 , without affecting the initial positioning between the U-shaped screw terminal 4 and the pre-positioning block 13 .

[0023] A tapping tool 19 is provided on one side of the U-shaped screw terminal 4 with a tapping hole, the tapping tool 19 is located above the tapping hole, and the upper end of the adjustment butt joint tube 17 is plugged into the lower end of the tapping tool 19, a conical fine-tuning groove 20 is provided at the center of the lower end of the tapping tool 19, a heat dissipation center groove 21 is provided in the center of the tapping tool 19, a shunt groove is provided at the upper end of the heat dissipation center groove 21, a plurality of oblique blowing holes 22 are provided in the shunt groove obliquely downward, the upper end of the adjustment butt joint tube 17 is plugged into the conical fine-tuning groove 20, a plurality of side blowing holes 24 are provided in the chip removal cavity groove 2 located above the terminal slide 3 and close to the tapping tool 19 on one side, when the U-shaped screw terminal 4 is initially positioned, the source gas connector 23 After the high-pressure airflow is introduced to control the adjustment of the butt joint pipe 17 and the pre-positioning block 13 to be lifted, the upper end of the butt joint pipe 17 is adjusted to pass through the tapping hole of the U-shaped screw terminal 4. At this time, when the tapping tool 19 is vertically lowered, the butt joint pipe 17 is first inserted into the conical fine-tuning groove 20 of the tapping tool 19. If the central axis of the butt joint pipe 17 and the tapping tool 19 are offset, the tapping tool 19 can slide and push the butt joint pipe 17 left and right through the conical fine-tuning groove 20, and then the butt joint pipe 17 acts on the pre-positioning block 13 and the piston plate 8, and the positioning movable box 6 is controlled to slide and adjust on the mounting support 5, so that the tapping tool 19 is aligned with the tapping hole of the U-shaped screw terminal 4; After alignment, the tapping tool 19 continues to descend, and the tapping tool 19 pushes the adjustment butt joint tube 17 and the reciprocating piston 15 to overcome the support of the high-pressure gas, and continues to descend to tap the U-shaped screw terminal 4. During the tapping, the butt joint tube 17 is adjusted to continuously blow high-pressure airflow, and the high-pressure airflow enters the heat dissipation center groove 21 and the diverter groove of the tapping tool 19, and then blows downward from a plurality of oblique blowing holes 22, and combines with the side blowing holes 24 to blow the chips generated by the tapping of the U-shaped screw terminal 4 downward into the chip removal cavity groove 2, and then falls and discharges; When the pre-positioning block 13 rises to the maximum extent, the abutment block can push the upper end of the U-shaped screw terminal 4 to abut against the upper end of the terminal slideway 3, maintaining a stable posture during the tapping process, thereby enhancing stability and positioning and improving the tapping quality.

[0024] Embodiment 2: On the basis of embodiment 1, the sliding between the mounting support 5 and the positioning movable box 6 can be lubricated, an air push joint 25 is provided on one side of the first-level telescopic groove 7, an air push piston groove 26 is provided in the air push joint 25, a piston plate 8 is located on one side of the air push joint 25 and a piston rod 27 is vertically provided, the lower end of the piston rod 27 is movably plugged into the air push piston groove 26 through a sealing ring, an oil storage groove 28 is provided on one side of the mounting support 5, one side of the air push piston groove 26 is connected to one side of the upper end of the oil storage groove 28 and an air push hose 29 is plugged in, one side of the sliding support tube 30 is connected to the oil storage groove 28 and a lifting oil groove 33 is provided at the lower end, a one-way valve 34 is provided on the lifting oil groove 33 near the oil storage groove 28, a plurality of oil replenishing holes 32 are opened through the upper end of the sliding support tube 30, and a sliding sleeve 31 is sleeved on one side of the sliding support tube 30 to cover Cover several oil replenishing holes 32. After the gas supply from the source gas joint 23 is cut off, several second springs 12 need to push the piston plate 8 downward to the balanced support position of the first spring 11. At this time, the piston plate 8 drives the piston rod 27 to slide downward in the air pushing piston groove 26. At this time, the piston rod 27 pushes the air flow in the air pushing piston groove 26 into the oil storage tank 28. Then, under the action of the pushing air pressure, the lubricating oil in the oil storage tank 28 pushes the two one-way valves 34 into the lifting oil tank 33. In this way, under the frequent reciprocating activity of the air pushing piston groove 26, the lubricating oil in the oil storage tank 28 is added to the sliding support tube 30 in small amounts each time, and then, under the action of the oil replenishing hole 32, it overflows and is coated on the position where the sliding sleeve 31 is sleeved on the sliding support tube 30, so as to continuously lubricate the sliding of the positioning activity box 6 and maintain the smooth effect when adjusting the docking tube 17 to toggle the positioning activity box 6.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tapping machine with a fast feeding assembly, characterized in that: include: A terminal tapping loading tray (1), wherein a chip removal cavity (2) is provided on one side of the terminal tapping loading tray (1), terminal slideways (3) are provided on both sides of the upper end of the chip removal cavity (2), a U-shaped screw terminal (4) is horizontally provided in the chip removal cavity (2), and the lower ends of both sides of the U-shaped screw terminal (4) are respectively inserted into two U-shaped screw terminals (4); A positioning assembly, wherein the positioning assembly is arranged in the chip removal cavity (2) through a sliding support assembly, the sliding support assembly comprises a mounting support (5) and two sliding support tubes (30), the positioning assembly comprises a positioning movable box (6), a pre-positioning block (13) and an adjustment butt joint tube (17), the positioning movable box (6) is slidably arranged above the mounting support (5), the pre-positioning block (13) is vertically movably plugged into the upper end of the positioning movable box (6), the upper end of the pre-positioning block (13) is plugged into the lower end of the U-shaped screw terminal (4), and the adjustment butt joint tube (17) is vertically movably plugged into the upper end of the pre-positioning block (13); A tapping tool (19), wherein a tapping hole is provided on one side of the U-shaped screw terminal (4), the tapping tool (19) is located above the tapping hole, and the upper end of the butt-joint tube (17) is adjusted to be plugged into the lower end of the tapping tool (19).

2. A tapping machine with a fast feeding assembly according to claim 1, characterized in that: The upper end of the mounting support (5) is provided with a sliding groove, the lower end of the positioning movable box (6) is vertically inserted into the sliding groove, the upper ends of both sides of the mounting support (5) located in the sliding groove are provided with rod grooves, the two sliding support tubes (30) are respectively arranged horizontally in the two rod grooves, and the two sides of the positioning movable box (6) are horizontally provided with sliding sleeves (31), and the two sliding sleeves (31) are respectively slidably sleeved with the two sliding support tubes (30).

3. A tapping machine with a fast feeding assembly according to claim 2, characterized in that: The positioning movable box (6) is provided with a primary telescopic groove (7), a piston disc (8) is horizontally provided at the upper end of the primary telescopic groove (7), a protrusion block is provided at the center of the lower end of the piston disc (8), a plurality of adapting guide grooves (9) are provided at the lower end of the protrusion block, a plurality of retaining guide rods (10) are vertically symmetrically provided at the center of the lower end of the primary telescopic groove (7), the upper ends of the plurality of retaining guide rods (10) are movably inserted into the plurality of adapting guide grooves (9), a first spring (11) is provided at the center of the lower end of the piston disc (8), and the first spring (11) is sleeved with the protrusion block.

4. A tapping machine with a fast feeding assembly according to claim 3, characterized in that: The pre-positioning block (13) is vertically arranged at the center of the upper end of the piston disk (8), the upper end of the pre-positioning block (13) movably penetrates the upper end of the positioning movable box (6), the two side surfaces of the upper end of the pre-positioning block (13) penetrating the positioning movable box (6) are inclined surfaces, the upper end of the pre-positioning block (13) is inserted into the U-shaped groove of the U-shaped screw terminal (4), the width of the pre-positioning block (13) is equal to the width of the U-shaped groove of the U-shaped screw terminal (4), and abutment blocks are provided on both sides of the pre-positioning block (13) outside the positioning movable box (6), and when the pre-positioning block (13) rises to the maximum extent, the two abutment blocks respectively abut against the lower ends of the two side walls of the U-shaped screw terminal (4).

5. A tapping machine with a fast feeding assembly according to claim 4, characterized in that: A plurality of second springs (12) are symmetrically arranged at the upper end of the piston disc (8), and the upper ends of the plurality of second springs (12) are respectively in contact with the upper end surface of the first telescopic groove (7). In a natural state, the combined resilience of the plurality of second springs (12) and the resilience of the first spring (11) can be offset. At this time, the upper end of the pre-positioning block (13) with the inclined surface is placed in the U-shaped groove of the U-shaped screw terminal (4).

6. A tapping machine with a fast feeding assembly according to claim 5, characterized in that: A secondary telescopic groove (14) is provided in the center of the pre-positioning block (13); a reciprocating piston (15) is horizontally provided at the upper end of the secondary telescopic groove (14); a support sleeve (16) is vertically provided at the center of the upper end of the reciprocating piston (15); the support sleeve (16) movably penetrates the upper end of the pre-positioning block (13); a third spring (18) is provided at the upper end of the reciprocating piston (15); an adjustment butt joint pipe (17) is rotatably provided in the support sleeve (16); and the upper end of the adjustment butt joint pipe (17) penetrates the tapped hole of the U-shaped screw terminal (4).

7. A tapping machine with a fast feeding assembly according to claim 6, characterized in that: An access slot is provided on one side of the mounting support (5); a positioning movable box (6) is located on one side of the access slot and is connected to the primary telescopic slot (7) and is provided with a source gas joint (23); a lower end of the secondary telescopic slot (14) passes through a protruding block and is connected to the primary telescopic slot (7); a center of the adjustment butt joint (17) passes through a reciprocating piston (15) and is connected to the secondary telescopic slot (14); and a diameter of the adjustment butt joint (17) is smaller than a diameter of the secondary telescopic slot (14) connected to the primary telescopic slot (7).

8. A tapping machine with a fast feeding assembly according to claim 7, characterized in that: A conical fine-tuning groove (20) is provided at the center of the lower end of the tapping tool (19), a heat dissipation center groove (21) is provided at the center of the tapping tool (19), a diverter groove is provided at the upper end of the heat dissipation center groove (21), a plurality of oblique blowing holes (22) are provided in the diverter groove and penetrate downwardly, the upper end of the adjustment butt pipe (17) is inserted into the conical fine-tuning groove (20), and a plurality of side blowing holes (24) are provided in the chip removal cavity groove (2) on a side located above the terminal slideway (3) and close to the tapping tool (19).

9. A tapping machine with a fast feeding assembly according to claim 8, characterized in that: A gas push joint (25) is provided on one side of the first telescopic groove (7), a gas push piston groove (26) is provided in the gas push joint (25), a piston rod (27) is vertically provided on the piston plate (8) located on one side of the gas push joint (25), the lower end of the piston rod (27) is movably plugged into the gas push piston groove (26) through a sealing ring, an oil storage groove (28) is provided on one side of the mounting support (5), and a gas push hose (29) is plugged and connected between one side of the gas push piston groove (26) and one side of the upper end of the oil storage groove (28).

10. A tapping machine with a fast feeding assembly according to claim 9, characterized in that: One side of the sliding support tube (30) is connected to the oil storage tank (28), and a lifting oil tank (33) is provided at the lower end of the side. A one-way valve (34) is provided at the side of the lifting oil tank (33) close to the oil storage tank (28). A plurality of oil replenishing holes (32) are penetrated through the upper end of the sliding support tube (30), and a sliding sleeve (31) is sleeved on one side of the sliding support tube (30) to cover the plurality of oil replenishing holes (32).

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