Tapping device for torque-adjustable machine

Abstract

The utility model discloses a tapping device for a torque-adjustable machine, which is characterized in that a screw tap handle is connected with a torque coupling, a torque coupling shaft is connected with a sliding shaft sleeve, the sliding shaft sleeve is connected with a force transmission sleeve, and a force transmission sleeve shaft is connected with a machine tool spindle through a connecting flange; the anti-overload thread tapper has the advantages that the anti-overload thread tapper for the drilling machine is additionally arranged at the front end of the thread tapper and is matched with a taper transition device connected with a machine tool main shaft, so that rotary cutting and axial feeding of machine tool tapping are realized. The output torque can be adjusted, the anti-overload thread tapper is protected when the rotation resistance of the screw tap exceeds the limit, the screw tap is prevented from being broken, and therefore the screw tap is effectively protected. Besides, the elastic force of the spring is utilized to pre-press the tapping part, and an operator does not need to push the rotating tapping device by hands, so that the safety of the operator is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field, concretely is a tapping device. BACKGROUND

[0002] Tapping is an important process in the workpiece machining process of mechanical manufacturing, for example, drilling and tapping are needed when tapping screw holes by machine tool, and the problem of broken tap often occurs in the machining process. Because the tap material is special, it is a very difficult work to handle the broken tap, often takes 2-5 hours or even longer time, increases the tool cost and easily damages the workpiece, not only time-consuming and laborious, but also affects the machining efficiency and quality of parts, and there is no more effective solution, only can avoid the damage of machine tap in tapping process. In addition, the operator needs to push the tapping device rotating by hand when tapping by using the tapping device of machine tool, and such operation has safety hazards. SUMMARY

[0003] To solve the above technical problems, the utility model aims at providing a tapping device for adjustable torque machine, the tap shank is connected with the torque shaft coupling, the torque shaft coupling shaft is connected with the sliding shaft sleeve, the sliding shaft sleeve is connected with the power transmission sleeve, and the power transmission sleeve shaft is connected with the machine tool spindle through the connecting flange.

[0004] The torque shaft coupling shaft is conical, and the conical front end is provided with a flat rectangular protruding part, the sliding shaft sleeve is provided with a conical hole corresponding to the conical hole, and the end of the conical hole is provided with a flat rectangular recess corresponding to the flat rectangular protruding part; a screw hole is arranged on the side of the rectangular protruding part, a through hole is arranged on the side of the flat rectangular recess, a screw passes through the through hole and is screwed with the screw hole, and then the torque shaft coupling and the sliding shaft sleeve are connected into one.

[0005] The outer surface of the sliding shaft sleeve is a straight cylinder, the sliding shaft sleeve is inserted into the power transmission sleeve, and a screw hole is arranged on the outer side of the sliding shaft sleeve, an inclined through hole is arranged on the side of the power transmission sleeve, a power transmission screw is screwed into the screw hole on the outer side of the sliding shaft sleeve, and the radial outer side of the power transmission screw abuts against the inner wall of the inclined through hole.

[0006] A spring is arranged in the power transmission sleeve, and the two ends of the spring abut against the end of the sliding shaft sleeve and the end of the inner hole of the power transmission sleeve respectively.

[0007] The power transmission sleeve shaft is also conical, and the inner wall of the connecting flange is also provided with a corresponding conical part, and a positioning screw passing through the side wall through hole of the connecting flange is screwed on the power transmission sleeve shaft.

[0008] The included angle between the inclined through hole and the power transmission sleeve shaft is 10°-15°.

[0009] The top end of the force transmission sleeve shaft is provided with a rectangular insertion part, the inner wall of the connecting flange is also provided with a corresponding rectangular through hole, and the exposed part of the rectangular insertion part after passing through the rectangular through hole is provided with a radial screw hole and is screwed with a positioning screw.

[0010] The utility model discloses the advantages are: install the anti-overloading tapping device of drill press at tapping device front end, cooperate with taper transition device connected with lathe main shaft, realize the rotation cutting and axial feed of lathe tapping. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model;

[0012] Figure 2 It is the structural schematic diagram of torque coupling;

[0013] Figure 3-1 It is the section view of sliding axle sleeve;

[0014] Figure 3-2 It is the position schematic view of sliding axle sleeve and force transmission screw;

[0015] Figure 4 It is the structural schematic diagram of force transmission sleeve. DETAILED DESCRIPTION

[0016] The utility model discloses the advantages are: install the anti-overloading tapping device of drill press at tapping device front end, cooperate with taper transition device connected with lathe main shaft, realize the rotation cutting and axial feed of lathe tapping.

[0017] The torque coupling shaft 21 is conical, and the conical front end is provided with a flat rectangular protruding part 22, the sliding axle 3 is provided with a conical hole 31 corresponding to the conical part in the sleeve, and the end of the conical hole is provided with a flat rectangular recess 32 corresponding to the flat rectangular protruding part; A screw hole 23 is arranged on the side of the rectangular protruding part, a through hole 33 is arranged on the side of the flat rectangular recess, a screw 6 is screwed through the through hole and the screw hole 23, and the torque coupling 2 and the sliding axle sleeve 3 are connected into one body.

[0018] The outer surface of the sliding axle sleeve 3 is a straight cylinder, the sliding axle sleeve 3 is inserted into the force transmission sleeve 4, and a screw hole two 34 is arranged on the outer side of the sliding axle sleeve 3, an inclined through hole 42 is arranged on the side of the force transmission sleeve 4, a force transmission screw 7 is screwed into the screw hole two 34 on the outer side of the sliding axle sleeve, and the radial outer side of the force transmission screw 7 abuts against the inner wall of the inclined through hole 42.

[0019] A spring 8 is arranged inside the force transmission sleeve, and two ends of the spring 8 abut against the end of the sliding shaft sleeve 3 and the end of the inner hole of the force transmission sleeve 4 respectively.

[0020] The force transmission sleeve shaft 41 is also conical, and the inner wall of the connecting flange 5 is also provided with a corresponding cone; the positioning screw 9 is screwed on the force transmission sleeve shaft 41 after the force transmission sleeve shaft 41 passes through the through hole of the connecting flange.

[0021] The included angle between the inclined through hole 42 and the axial direction of the force transmission sleeve is 10°-15°.

[0022] The top end of the force transmission sleeve shaft 41 is provided with a rectangular insertion part 43, and the inner wall of the connecting flange is also provided with a corresponding rectangular through hole; the exposed part of the rectangular insertion part 43 after passing through the rectangular through hole is provided with a radial screw hole and is screwed with the positioning screw 9.

[0023] In the utility model, the torque coupling is a commercially available product. The torque coupling shaft is connected with the torque coupling by welding to form an integrated whole.

[0024] The use method of the utility model is: the connecting flange is connected with the machine tool spindle, then a certain pre-pressing is carried out with the workpiece, so that the spring has the outward spring force; in this way, the tap head has a certain pre-tightening force with the workpiece when tapping is started for the first time, manual force exertion is avoided, and safety is improved. The torsional moment of the torque coupling 2 is set, the tap is prevented from being broken when the tap rotation resistance exceeds the limit, and the tap is effectively protected.

Claims

1. A tapping device for an adjustable torque machine, characterized by: The tap handle is connected with the torque coupling, the torque coupling shaft is connected with the sliding sleeve, the sliding sleeve is connected with the force transmission sleeve, and the force transmission sleeve shaft is connected with the machine tool spindle through the connecting flange; The torque coupling shaft is conical, and the conical front end is provided with a flat rectangular protruding part. The sliding sleeve is provided with a conical hole corresponding to the conical part. The end of the conical hole is provided with a flat rectangular recess corresponding to the flat rectangular protruding part. A screw hole is arranged on the side of the rectangular protruding part, and a through hole is arranged on the side of the flat rectangular recess. A screw passes through the through hole and is screwed into the screw hole, thereby connecting the torque coupling and the sliding sleeve into one body. The outer surface of the sliding sleeve is a straight cylinder. The sliding sleeve is inserted into the force transmission sleeve, and a screw hole is arranged on the outer side of the sliding sleeve. An inclined through hole is arranged on the side of the force transmission sleeve. A force transmission screw is screwed into the screw hole on the outer side of the sliding sleeve. The radial outer side of the force transmission screw abuts against the inner wall of the inclined through hole. A spring is arranged in the force transmission sleeve. The two ends of the spring respectively abut against the end of the sliding sleeve and the end of the inner hole of the force transmission sleeve.

2. A tapping device for an adjustable torque machine according to claim 1, characterized in that: The force transmission sleeve shaft is also conical, and the inner wall of the connecting flange is also provided with a corresponding conical part. After the force transmission sleeve shaft passes through the through hole of the connecting flange, a positioning screw passing through the side wall through hole of the connecting flange is screwed onto the force transmission sleeve shaft.

3. The tapping device for an adjustable torque machine according to claim 1, characterized in that: The included angle between the inclined through hole and the force transmission sleeve shaft is 10°-15°.

4. The tapping device for an adjustable torque machine according to claim 2, characterized in that: The top end of the force transmission sleeve shaft is provided with a rectangular insertion part. The inner wall of the connecting flange is also provided with a corresponding rectangular through hole. After the rectangular insertion part passes through the rectangular through hole, the exposed part is provided with a radial screw hole and a positioning screw is screwed into the radial screw hole.

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