Automatic tapping machine for hardware machining

Abstract

The utility model discloses a kind of automatic tapping machine for hardware parts processing, is related to tapping machine technical field, including work platform, the top of work platform is fixedly connected with two symmetrical and parallel distribution's positioning slide bar, positioning slide bar outside is slidably connected with two and work platform vertical distribution's movement stand, two The movement stand between is slidably connected with mounting frame by the positioning slide bar, mounting frame inside is slidably connected gear box, the movement stand one side is fixedly connected with motor.This kind of automatic tapping machine for hardware parts processing, segmented transmission shaft is through the polygonal nesting structure of transmission sliding sleeve and transmission slide bar, while realizing axial telescoping in guaranteeing torque transmission stability, the axis compensation ability of cooperation universal joint, make gear box keep power continuous output in lifting process, and the design of motor fixed installation effectively reduces equipment vibration, improves operating stability.

Description

Technical Field

[0001] This utility model relates to the field of tapping machine technology, specifically an automatic tapping machine for processing hardware parts. Background Technology

[0002] Automatic tapping machines for hardware parts processing are machine tools specifically designed to automatically tap threads on metal or other material workpieces, and are widely used in the hardware manufacturing industry.

[0003] To achieve the above functions, the prior art (publication number: CN212858078U) Chinese patent discloses a metal fitting internal hole tapping machine, which not only improves work efficiency but also improves the tapping effect and reduces its limitations; it also includes a work plate, a bracket, a support plate, a top plate, a moving plate, two sets of buffer chambers, two sets of springs, two sets of sliders, two sets of sliding rods, a connecting plate, a motor, a first rotating shaft, a gear ring, four sets of gears, four sets of grippers, and four sets of taps. Two sets of clamping devices are provided on the left and right sides of the top of the work plate, and a positioning device is provided on the top of the work plate. The bottom of the work plate is connected to the top of the bracket. The support plate is installed on the rear side of the top of the work plate, and the four sets of second rotating shafts are rotatably installed on the bottom of the connecting plate. The four sets of gears are fitted on the four sets of second rotating shafts, and all four sets of gears mesh with the gear ring. The four sets of grippers are respectively installed on the bottom of the four sets of second rotating shafts. The four sets of grippers are located on the outside of the fixed frame, and the four sets of taps are respectively installed on the four sets of grippers.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: during use, tapping machines need to use a motor to drive the tap to rotate and make contact with the workpiece. The motor that drives the lead screw of existing tapping machines generally moves synchronously with the tap. The vibration generated during processing can easily affect the power output of the motor, and the integrated structure of the motor and the tap makes maintenance inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic tapping machine for processing hardware parts, so as to solve the problems in the above-mentioned background technology that the motor driving the lead screw of the existing tapping machine generally moves synchronously with the tap, the vibration generated during the processing can easily affect the power output of the motor, and the integrated structure of the motor and the tap is not convenient for maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic tapping machine for processing hardware parts, comprising a work platform, wherein two symmetrical and parallel positioning slide rods are fixedly connected to the top of the work platform via columns, and two moving columns perpendicular to the work platform are slidably connected to the outer side of the positioning slide rods;

[0007] An installation frame is slidably connected between the two moving columns via the positioning slide rod. A gearbox is slidably connected inside the installation frame. A motor is fixedly connected to one side of each moving column, and a segmented transmission shaft is installed between the motor output end and the gearbox input end. The segmented transmission shaft includes a transmission slide rod and a transmission sleeve arranged coaxially. The inner side of the transmission sleeve and the outer side of the transmission slide rod are both designed as polygonal structures to achieve sliding.

[0008] Preferably, the gearbox has mounting holes at the four corners of its top, and each mounting hole has a vertical slide rod slidably connected inside. The tops of the four vertical slide rods are fixedly connected to a drive plate, and the vertical slide rods and drive plates are located between the top of the gearbox and the inner side of the mounting frame. The segmented drive shaft is provided with universal joints at the connection points between the motor output end and the gearbox.

[0009] Preferably, a hydraulic cylinder is fixedly connected to the top of the mounting frame, and the output end of the hydraulic cylinder is fixedly connected to the top of the drive plate. A spring is fixedly connected between the bottom of the drive plate and the top of the gearbox, and the spring is located inside the four vertical slide rods.

[0010] Preferably, the outer side of the gearbox output end is provided with a polygonal structure and an external thread, and a fixing nut is connected to the outer side of the gearbox output end through the external thread to form an axial locking structure.

[0011] Preferably, a tap is installed inside the output end of the gearbox, and a fixing ring is fixedly connected to the upper outer end of the tap. A clamping structure is formed between the bottom end face of the output end of the gearbox and the fixing nut to fix the fixing ring.

[0012] Preferably, the top inner side of the mounting frame is fixedly connected with symmetrically distributed sliding sleeves and threaded sleeves, and a first lead screw is rotatably connected between the two moving columns. The first lead screw is threaded into the threaded sleeve and driven by a rotating handle.

[0013] Preferably, the top column of the working platform is rotatably connected to a second lead screw that is parallel to the positioning slide rod. The lower end of the moving column is provided with a threaded hole, and the second lead screw is threaded into the threaded hole and driven by a rotating handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This automatic tapping machine for processing hardware parts features a segmented drive shaft that, through a polygonal nested structure of a drive sleeve and a drive rod, ensures torque transmission stability while achieving axial extension and retraction. Combined with the axial compensation capability of the universal joint, it enables the gearbox to maintain continuous power output during lifting and lowering. The fixed installation design of the motor effectively reduces equipment vibration and improves operational stability.

[0016] The polygonal shaft at the output end of the gearbox is engaged with a fixing nut via an external thread. When replacing it, simply loosen the fixing nut to release the axial constraint on the tap retaining ring, thus achieving quick disassembly and assembly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the universal joint structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the transmission sleeve structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation frame structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the tap structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the moving column structure of this utility model.

[0023] In the diagram: 1. Working platform; 2. Positioning slide rod; 3. Moving column; 4. Mounting frame; 5. Gearbox; 6. Motor; 7. Transmission sleeve; 8. Transmission slide rod; 9. Universal joint; 10. Mounting slide hole; 11. Vertical slide rod; 12. Drive plate; 13. Spring; 14. External thread; 15. Tap; 16. Fixing nut; 17. Fixing ring; 18. First lead screw; 19. Second lead screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1 - Figure 3This utility model provides the following technical solution: an automatic tapping machine for processing hardware parts, including a work platform 1. Two symmetrical and parallel positioning slide rods 2 are fixedly connected to the top of the work platform 1 via columns. Two moving columns 3, which are perpendicular to the work platform 1, are slidably connected to the outer side of the positioning slide rods 2. An installation frame 4 is slidably connected between the two moving columns 3 via the positioning slide rods 2. A gearbox 5 is slidably connected inside the installation frame 4. A motor 6 is fixedly connected to one side of the moving columns 3. A segmented transmission shaft is installed between the output end of the motor 6 and the input end of the gearbox 5. The segmented transmission shaft includes a transmission slide rod 8 and a transmission sleeve 7 arranged coaxially. The inner side of the transmission sleeve 7 and the outer side of the transmission slide rod 8 are both designed as polygonal structures to achieve sliding.

[0026] When the automatic tapping machine is started, the operator first fixes the hardware to be processed onto the clamp on the top of the work platform 1. The positioning slide rod 2 serves as the basic guide structure, providing a vertical sliding reference for the two moving columns 3. When the processing position needs to be adjusted laterally, the moving columns 3 are driven by external force to slide laterally along the positioning slide rod 2, causing the mounting frame 4 and its internal components to move as a whole. The mounting frame 4 slides vertically with the gearbox 5 through its internal slide rail. At this time, the hydraulic cylinder fixed to the top of the mounting frame 4 starts to work, and its piston rod extends downward, pushing the gearbox 5 down along the inner slide rail of the mounting frame 4.

[0027] When the tap 15 at the output end of gearbox 5 contacts the workpiece surface, motor 6 begins to transmit power through the segmented drive shaft. The transmission sleeve 7 and transmission slide rod 8 adopt a polygonal nested structure, which allows axial extension and contraction while maintaining the stability of torque transmission. The universal joint 9 effectively compensates for the axial offset of gearbox 5 during lifting and lowering, ensuring continuous power transmission. This structure can accommodate the vertical stroke of gearbox 15 while maintaining the fixed installation state of motor 6, avoiding vibration problems caused by the follow-up movement of motor 6.

[0028] Example 2: Based on Example 1, please refer to... Figure 4 and Figure 5The following structure is also disclosed: Mounting sliding holes 10 are provided at the four corners of the top of the gearbox 5. A vertical sliding rod 11 is slidably connected inside each mounting sliding hole 10. A drive plate 12 is fixedly connected to the top of the four vertical sliding rods 11. The vertical sliding rods 11 and the drive plate 12 are both located between the top of the gearbox 5 and the inner side of the mounting frame 4. Universal joints 9 are provided at the connection points between the segmented drive shaft and the output end of the motor 6 and the gearbox 5. A hydraulic cylinder is fixedly connected to the top of the mounting frame 4, and the output end of the hydraulic cylinder is fixedly connected to the top of the drive plate 12. The bottom of the drive plate 12 and the gearbox 5 are also connected... A spring 13 is fixedly connected between the top of the gearbox 5, and the spring 13 is located inside the four vertical slide rods 11; the outer side of the output end of the gearbox 5 is a polygonal structure, and the outer side of the output end of the gearbox 5 is provided with an external thread 14. A fixing nut 16 is threadedly connected to the outer side of the output end of the gearbox 5 through the external thread 14 to form an axial locking structure; a tap 15 is installed inside the output end of the gearbox 5, and a fixing ring 17 is fixedly connected to the upper outer side of the tap 15. A clamping structure is formed between the bottom end face of the output end of the gearbox 5 and the fixing nut 16 to fix the fixing ring 17.

[0029] During tapping operations, the output end of the hydraulic cylinder first drives the drive plate 12 to press down. Through the four vertical slide rods 11, they cooperate with the mounting slide holes 10 on the top of the gearbox 5 to form a four-point synchronous guiding system. When the tap 15 contacts the workpiece and generates a reaction force, the spring 13 between the gearbox 5 and the drive plate 12 begins to compress, forming a pressure buffer mechanism.

[0030] The elastic deformation of spring 13 is automatically adjusted according to the preset tapping pressure, which not only ensures the feed pressure required for tapping, but also avoids the risk of tap 15 breaking due to rigid downward pressure of the hydraulic cylinder. The precise fit between vertical slide rod 11 and mounting slide hole 10 ensures the vertical movement accuracy of gearbox 5 under pressure. When the hydraulic cylinder retracts after tapping, the reset action of spring 13 precedes the mechanical limit of vertical slide rod 11 and mounting slide hole 10, forming a two-stage return action, which effectively prevents tap 15 from secondary contact with the workpiece.

[0031] With the polygonal shaft segment and external thread 14 at the output end of gearbox 5, and the coordinated locking of fixing nut 16 and fixing ring 17, replacement can be achieved by simply loosening fixing nut 16 to release the axial constraint on tap 15 and fixing ring 17, thus enabling quick disassembly and assembly.

[0032] Example 3: Based on Examples 1 and 2, please refer to... Figure 6The following structure is also disclosed: a symmetrically distributed sliding sleeve and a threaded sleeve are fixedly connected to the inner side of the top of the mounting frame 4; a first lead screw 18 is rotatably connected between the two moving columns 3, and the first lead screw 18 is threadedly connected to the threaded sleeve and driven by a rotating handle; a second lead screw 19 is rotatably connected to the top column of the working platform 1 and is distributed parallel to the positioning sliding rod 2; a threaded hole is provided inside the lower end of the moving column 3, and the second lead screw 19 is threadedly connected to the inside of the threaded hole and driven by a rotating handle.

[0033] The first lead screw 18 passes laterally through the two moving columns 3. Its threaded section is connected to the threaded sleeve at the top of the mounting frame 4. When the operator rotates the rotating handle set at the end of the first lead screw 18, the threaded pair converts the rotational motion into the lateral movement of the mounting frame 4 along the moving columns 3.

[0034] The second lead screw 19 is longitudinally mounted on the column of the working platform 1. Its threaded section and the threaded hole at the bottom of the moving column 3 form a moving structure. The overall longitudinal displacement of the moving column 3 is achieved by driving it with an independent handle.

[0035] Two vertically arranged lead screws form a coordinate system, which, together with the guiding action of the positioning slide rod 2, enables the gearbox 5 to be precisely positioned in the XY plane on the surface of the work platform 1, meeting the needs of multi-station processing. First, the longitudinal movement of the moving column 3 completes the general positioning, and then the lateral fine adjustment of the mounting frame 4 achieves the final alignment. Finally, the vertical tapping operation is carried out.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic tapping machine for processing hardware parts, comprising a work platform (1), wherein two symmetrical and parallel positioning slide rods (2) are fixedly connected to the top of the work platform (1) by columns, and two moving columns (3) that are perpendicular to the work platform (1) are slidably connected to the outside of the positioning slide rods (2). Its features are: A mounting frame (4) is slidably connected between the two moving columns (3) via the positioning slide rod (2). A gearbox (5) is slidably connected inside the mounting frame (4). A motor (6) is fixedly connected to one side of the moving column (3). A segmented transmission shaft is installed between the output end of the motor (6) and the input end of the gearbox (5). The segmented transmission shaft includes a transmission slide rod (8) and a transmission sleeve (7) arranged coaxially. The inner side of the transmission sleeve (7) and the outer side of the transmission slide rod (8) are both set as polygonal structures to achieve sliding.

2. The automatic tapping machine for processing hardware parts according to claim 1, characterized in that: The gearbox (5) is provided with mounting sliding holes (10) at the four corners of the top. Each mounting sliding hole (10) is slidably connected with a vertical sliding rod (11). The top of the four vertical sliding rods (11) is fixedly connected with a drive plate (12). The vertical sliding rods (11) and the drive plate (12) are located between the top of the gearbox (5) and the inner side of the mounting frame (4). The segmented transmission shaft is provided with universal joints (9) at the connection between the output end of the motor (6) and the gearbox (5).

3. The automatic tapping machine for processing hardware parts according to claim 2, characterized in that: The top of the mounting frame (4) is fixedly connected to a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to the top of the drive plate (12). A spring (13) is fixedly connected between the bottom of the drive plate (12) and the top of the gearbox (5), and the spring (13) is located inside the four vertical slide bars (11).

4. An automatic tapping machine for processing hardware parts according to claim 3, characterized in that: The output end of the gearbox (5) is provided with a polygonal structure on the outside, and an external thread (14) is provided on the output end of the gearbox (5). A fixing nut (16) is threadedly connected to the output end of the gearbox (5) through the external thread (14) to form an axial locking structure.

5. An automatic tapping machine for processing hardware parts according to claim 4, characterized in that: A tap (15) is installed inside the output end of the gearbox (5). A fixing ring (17) is fixedly connected to the upper outer side of the tap (15). A clamping structure is formed between the bottom end face of the output end of the gearbox (5) and the fixing nut (16) to fix the fixing ring (17).

6. An automatic tapping machine for processing hardware parts according to claim 1, characterized in that: The mounting frame (4) has symmetrically distributed sliding sleeves and threaded sleeves fixedly connected to the top inner side. The two moving columns (3) are rotatably connected to a first lead screw (18), which is threaded into the threaded sleeve and driven by a rotating handle.

7. An automatic tapping machine for processing hardware parts according to claim 6, characterized in that: The top column of the working platform (1) is rotatably connected to a second lead screw (19) that is parallel to the positioning slide rod (2). The lower end of the moving column (3) is provided with a threaded hole, and the second lead screw (19) is threadedly connected to the inside of the threaded hole and driven by the rotating handle.

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