Handheld electric impact threading machine

Abstract

The utility model discloses a handheld electric impact threading machine which comprises a main machine and a working head. A driver is arranged in the main machine and used for driving the main machine working end of the main machine to rotate. The input end of the working head is connected with the host working end, and the host working end rotates to drive the working head to rotate synchronously; a mounting cylinder is arranged on the working head, a circular die is detachably mounted in the mounting cylinder, the working head drives the circular die to rotate synchronously when rotating, and the rotating axis of the circular die, the rotating axis of the working head and the rotating axis of the working end of the main machine coincide. A driver in the main machine drives the circular die to rotate through the working head, so that the circular die solves the problems of machining of round steel outer cylinder threads and repairing of damaged geometrical shapes of outer thread surfaces. The handheld electric impact threading machine is small in occupied space in use, can be suitable for most scenes, and can reduce the labor intensity of work and improve the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of round die, especially relates to a hand -held electric impact threading machine. BACKGROUND

[0002] In many industries, it is inevitable to use fasteners such as screws, bolts and special-shaped bolts, however, these threaded fasteners may be deformed in tooth shape, have sundries adhered between threaded engagement sections, etc. due to improper operation or other reasons during transportation, storage and installation, for example, being easily polluted by cement mortar and other sundries on the engineering site, being easily corroded and mechanically damaged due to improper transportation or storage, etc., at which time it is necessary to use tools to repair and reuse the parts. The commonly used tool is a combination of a round die and a round die wrench frame, which uses the round die for repair and reuse and uses the round die wrench frame to operate the round die.

[0003] However, the combination of the round die and the round die wrench frame has two outer ends of the handle on the round die wrench frame with a large rotary diameter, which cannot be used in many application scenarios, for example, the rotary radius of the handle on the round die wrench frame exceeds the inner recess space of the U-shaped double-end threaded fastener, so the U-shaped double-end threaded fastener cannot be repaired and reused, and for example, when the distance between the bolt to be repaired and the adjacent bolt, or the distance between the bolt and the side wall, is less than the rotary radius of the handle on the round die wrench frame, the round die wrench frame cannot be used, and so on. SUMMARY

[0004] The utility model aims at providing a hand -held electric impact threading machine to solve the problem that the combination of the round die and the round die wrench frame in the prior art is limited in application scenarios due to the large rotary radius of the handle in the round die wrench frame.

[0005] The technical scheme of the utility model is as follows:

[0006] A hand -held electric impact threading machine, comprising:

[0007] A host computer, wherein a driver is arranged in the host computer, and the driver is used to drive the host computer working end to rotate;

[0008] A working head, wherein the input end of the working head is connected with the host computer working end, the host computer working end drives the working head to rotate synchronously when the host computer working end rotates; an installation cylinder is arranged on the working head, a round die is detachably installed in the installation cylinder, the round die rotates synchronously when the working head rotates, and the rotation axis of the round die, the rotation axis of the working head and the rotation axis of the host computer working end coincide.

[0009] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the working end of the main machine is an output shaft, the input end of the working head is provided with a mounting hole matched with the output shaft, and the output shaft extends into the mounting hole;

[0010] The output shaft and the mounting hole are provided with a circumferential limiting structure for fixing the circumferential relative position between the output shaft and the mounting hole so that the input end of the working head rotates synchronously when the output shaft rotates.

[0011] The output shaft and the mounting hole are provided with an axial limiting structure for fixing the axial relative position between the output shaft and the mounting hole.

[0012] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the circumferential limiting structure is that the cross section of the output shaft is a regular polygon, and the cross section of the mounting hole is a regular polygon matched with the cross section of the output shaft.

[0013] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the axial limiting structure is that a connecting piece passes through a first hole on the output shaft and at least one end of the connecting piece extends out of the first hole and then extends into a second hole provided on the inner side wall of the mounting hole.

[0014] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the axial limiting structure includes a connecting piece, a first hole and two second holes, the two ends of the first hole are respectively aligned with the two second holes so that the three form a containing through hole, the connecting piece is located in the containing through hole, and the connecting piece passes through the first hole and the two second holes respectively.

[0015] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the two end openings of the containing through hole are respectively provided on the outer side wall of the input end of the working head, the connecting piece is a pin, the pin passes through the containing through hole, and a anti-falling piece is provided between the pin and the input end of the working head, and the anti-falling piece is used to prevent the pin from falling out of the containing through hole.

[0016] The hand-held electric impact threading machine provided by the preferred embodiment is characterized in that the outer side wall of the input end of the working head is provided with an annular groove, and the two end openings of the containing through hole are respectively provided in the annular groove, the anti-falling piece is a rubber ring, the rubber ring is sleeved on the input end of the working head and accommodated in the annular groove to prevent the pin from falling out of the containing through hole.

[0017] The hand-held electric impact threading machine provided by the preferred embodiment comprises an installation cylinder, a work head and a circular plate tap.

[0018] The hand-held electric impact threading machine provided by the preferred embodiment comprises an installation cylinder, a work head and a circular plate tap.

[0019] The hand-held electric impact threading machine provided by the preferred embodiment comprises an installation cylinder, a work head and a circular plate tap.

[0020] The hand-held electric impact threading machine provided by the preferred embodiment comprises an installation cylinder, a work head and a circular plate tap.

[0021] The hand-held electric impact threading machine provided by the preferred embodiment comprises an installation cylinder, a work head and a circular plate tap. BRIEF DESCRIPTION OF DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art, upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not intended to limit the present application.

[0023] Figure 1 Figure 1 is a structural schematic diagram of a combination of a circular plate tap and a circular plate tap wrench frame in the prior art;

[0024] Figure 2 Figure 1 is a structural schematic diagram of a combination of a circular plate tap and a circular plate tap wrench frame in the prior art;

[0025] Figure 3An explosion schematic view of the handheld electric impact wire sleeving machine;

[0026] Figure 4 A cross-sectional structure schematic view of the handheld electric impact wire sleeving machine;

[0027] Figure 5 For Figure 4 A cross-sectional structure schematic view of the middle A-A;

[0028] Figure 6 For Figure 4 A cross-sectional structure schematic view of the middle B-B;

[0029] Figure 7 A schematic view of the handheld electric impact wire sleeving machine in use.

[0030] Explanation of reference signs:

[0031] 1: main machine; 11: main machine working end; 12: handle; 13: button switch;

[0032] 2: working head; 21: input end of the working head; 22: mounting cylinder;

[0033] 3: round plate die; 4: pin; 5: rubber ring; 6: special-shaped key; 7: tight screw; 8: positioning screw; 9: machined workpiece; 10: round plate die wrench frame. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, and other embodiments can also be obtained.

[0035] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0036] In the prior art, the combination of round die 3 and round die wrench frame 10 is usually used to solve the problem of machining the outer cylindrical thread of round steel and the problem of repairing the damaged geometry of the outer threaded surface. However, the combination of round die 3 and round die wrench frame 10 has many inconveniences when used. For example: first, the work efficiency is low, especially when the size of the round die 3 exceeds M12mm, and it is almost impossible to operate when the size of the round die 3 exceeds M16mm or more; second, the handle in the round die wrench frame 10 has a large turning radius, which requires a certain operating space around; third, the labor intensity of the operator is high; fourth, for the downward hanging screw, there is a problem of difficulty in operation.

[0037] In view of the use conditions and shortcomings of the combination of round die 3 and round die wrench frame 10, the embodiment provides a handheld electric impact threading machine which can reduce the labor intensity of work, improve the work efficiency and adapt to more working scenes.

[0038] Referring to Figures 2 to 7 , the embodiment provides a handheld electric impact threading machine, which comprises a host 1 and a working head 2. The host 1 is provided with a driver for driving the host working end 11 of the host 1 to rotate. The input end 21 of the working head 2 is connected with the host working end 11, and the host working end 11 drives the working head 2 to rotate synchronously when the host working end 11 rotates; the working head 2 is provided with a mounting cylinder 22, and the round die 3 is detachably mounted in the mounting cylinder 22, and the working head 2 drives the round die 3 to rotate synchronously when the working head 2 rotates, and the rotation axis of the round die 3, the rotation axis of the working head 2 and the rotation axis of the host working end 11 coincide.

[0039] Specifically, the host 1 is a mature and standardized machine with intermittent torque output, and its working characteristic is that the host working end 11 outputs an instantaneous impact torque every 180° rotation, outputs 2 instantaneous impact torques every 360° rotation, and can work continuously. The embodiment uses this machine as the original power source of torque.

[0040] The host working end 11 can be provided as an output shaft, and the input end 21 of the working head 2 is provided with a mounting hole matched with the output shaft, and the output shaft extends into the mounting hole. A circumferential limiting structure is arranged between the output shaft and the mounting hole for fixing the circumferential relative position between the output shaft and the mounting hole so that the output shaft drives the input end 21 of the working head 2 to rotate synchronously when the output shaft rotates. An axial limiting structure is arranged between the output shaft and the mounting hole for fixing the axial relative position between the output shaft and the mounting hole.

[0041] Specifically, the circumferential limiting structure can be that the cross section of the output shaft is a regular polygon, the cross section of the mounting hole is a regular polygon matching the cross section of the output shaft, so that the circumferential position between the output shaft and the mounting hole is fixed, and when the output shaft rotates, the work head 2 provided with the mounting hole can be synchronously driven to rotate; the axial limiting structure can be that the connecting piece passes through the first hole on the output shaft and at least one end of the connecting piece extends out of the first hole and then extends into the second hole provided on the inner side wall of the mounting hole, so that the connecting piece connects the output shaft and the work head 2 provided with the mounting hole, and the axial position between the output shaft and the mounting hole is fixed, and the output shaft cannot move axially in the mounting hole.

[0042] Referring mainly to Figure 6 More specifically, the axial limiting structure can include a connecting piece, a first hole, and two second holes, the two ends of the first hole are respectively aligned with the two second holes to form a receiving through hole in cooperation with the three; the connecting piece is located in the receiving through hole, and the connecting piece passes through the first hole and the two second holes respectively. More preferably, the two ends of the receiving through hole are respectively provided on the outer side wall of the input end 21 of the work head 2, and the receiving through hole is arranged along the radial direction of the mounting hole, and the axis of the receiving through hole passes through the center of the cross section of the first hole on the output shaft.

[0043] Among them, the connecting piece can adopt a pin 4, and the pin 4 passes through the receiving through hole. In order to prevent the pin 4 from falling off from the receiving through hole, a anti-falling piece is arranged between the pin 4 and the input end 21 of the work head 2. The anti-falling piece can specifically adopt a rubber ring 5; an annular groove is arranged on the outer side wall of the input end 21 of the work head 2, and the two ends of the receiving through hole are respectively arranged in the annular groove, and the rubber ring 5 is sleeved on the input end 21 of the work head 2 and accommodated in the annular groove, so as to block the pin 4 from falling off from the receiving through hole.

[0044] The connection mode between the main machine working end 11 and the input end 21 of the work head 2 and the cooperation relationship between the parts make the main machine working end 11 and the work head 2 form effective and reliable torque transmission, so that the handheld electric impact socket of the embodiment has stable working performance.

[0045] Referring mainly to Figure 5 The inner side wall of the mounting cylinder 22 protrudes an axial limiting block, the outer side wall of the circular plate tooth 3 is provided with an axial limiting groove matching the axial limiting block, and the axial limiting block is accommodated in the axial limiting groove, so that the work head 2 can drive the circular plate tooth 3 to rotate synchronously when the work head 2 rotates.

[0046] Specifically, the inner side wall of the mounting cylinder 22 is provided with an axial mounting groove, the axial mounting groove is provided with the special-shaped key 6, the surface of the special-shaped key 6 towards the radial outer side is provided with a threaded hole, the side wall of the mounting cylinder 22 is provided with a matching hole corresponding to the threaded hole, and the tight screw 7 is threadedly connected with the threaded hole on the special-shaped key 6 after being arranged in the matching hole. The part of the special-shaped key 6 protruding from the inner side wall of the mounting cylinder 22 forms an axial limiting block. That is, the axial mounting groove on the inner side wall of the mounting cylinder 22 and the axial limiting groove on the outer side wall of the circular plate tooth 3 cooperatively form a special-shaped key accommodating groove, the special-shaped key 6 is accommodated in the special-shaped key accommodating groove, and then the special-shaped key 6 is fixed on the mounting cylinder 22 through the tight screw 7. The special-shaped key 6 is arranged to transmit the torque transmitted from the main machine working end 11 to the working head 2 to the circular plate tooth 3. The tight screw 7 plays a fixing role on the special-shaped key 6, and prevents the special-shaped key 6 from falling off when the circular plate tooth 3 is taken out. The hole for the tight screw 7 to pass through on the mounting cylinder 22 can be a smooth hole or a threaded hole, and the threaded hole is preferred.

[0047] The outer side wall of the circular plate tooth 3 is provided with a first positioning hole, the side wall of the mounting cylinder 22 is provided with a second positioning hole corresponding to the first positioning hole, and the positioning screw 8 is arranged in the second positioning hole and then extends into the first positioning hole, so that the axial positioning of the circular plate tooth 3 in the mounting cylinder 22 is realized. In the embodiment, the positioning screw 8 can be arranged on both sides of the tight screw 7 (the two sides here refer to the two sides in the circumferential direction of the mounting cylinder 22). The first positioning hole is a threaded hole, the positioning screw 8 is threadedly connected with the first positioning hole, the second positioning hole is a smooth hole, and the relative position between the positioning screw 8 and the mounting cylinder 22 is fixed, so that the positioning screw 8 can realize the positioning of the axial position of the circular plate tooth 3 as long as the positioning screw 8 extends into the second positioning hole.

[0048] Now an example of a feasible use process of the handheld electric impact threading machine is given. It should be noted that the use process is only used for example, and is not a limitation of the handheld electric impact threading machine. The use process is as follows: first, the workpiece 9 to be processed needs to be fixed, and the workpiece 9 to be processed needs to have sufficient fastening force, so that the handheld electric impact threading machine will not be twisted and shaken during use; then, the circular plate tooth 3 and the working head 2 matched with the workpiece 9 to be processed are selected, the circular plate tooth 3 is installed in the mounting cylinder 22 on the working head 2, then the two positioning screws 8 are tightened, so that the circular plate tooth 3 is installed and fixed on the working head 2; then, the output shaft in the main machine 1 is inserted into the mounting hole on the working head 2, then the pin 4 and the rubber ring 5 are installed, and the installation and fixation of the working head 2 and the main machine 1 are realized; then, the main machine 1 is connected to the power supply, the handle 12 of the main machine 1 is held, the button switch 13 is jogged for several times, and after no abnormality is found, it can be determined that the handheld electric impact threading machine can perform actual threading operation; before threading, machine oil or butter needs to be applied on the processed section of the workpiece 9 to be processed, so as to play a lubricating role in threading cutting; during threading operation,Figure 7 When the center C moves forward to the direction of the arrow, the center of the round die 3 is aligned with the center of the workpiece 9, and the balance of the center line between them is grasped, at this time, the handle 12 of the main machine 1 is held, and the button switch 13 is started to enter the threading state. Due to the structural characteristics of the round die 3, it will automatically enter the threading state. When the length of the threaded segment is completed, the button switch 13 is reversed to rotate, that is, the round die 3 is withdrawn after the threaded segment is just threaded, and the operation is completed. The above use process is also suitable for repairing damaged threads.

[0049] The handheld electric impact threading machine of the embodiment skillfully uses the power main machine 1 with intermittent output of impact torque, so that continuous, high-frequency and low-reaction intermittent torque can be obtained. The handheld electric impact threading machine of the embodiment has the characteristics of time saving, labor saving, labor saving and strong adaptability, especially in the field of processing and repairing threads of M12 and above, it has applicability and advantage.

[0050] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments. Even if various changes are made to the utility model, if the changes belong to the scope of the claims of the utility model and equivalent technologies, they still fall within the protection scope of the utility model.

Claims

1. A hand-held electric impact screwdriver characterized by comprising: The utility model provides a kind of work head and main machine, including: Main machine, the driver for driving the main machine work end is equipped in the main machine, the driver is used to drive the main machine work end rotates; Work head, the input end of the work head is connected with the main machine work end, the main machine work end rotates when driving the work head synchronous rotation;The work head is equipped with installation cylinder, the circular plate tooth is detachably installed in the installation cylinder, the work head rotates when driving the circular plate tooth synchronous rotation, and, the rotation axis of the circular plate tooth, the rotation axis of the work head and the rotation axis of the main machine work end coincide.

2. The hand-held electric impact screwdriver according to claim 1, characterized in that The main machine work end is output shaft, the input end of the work head is equipped with installation hole compatible with the output shaft, the output shaft is inserted into the installation hole; The output shaft and the installation hole are equipped with circumferential limiting structure, for fixing the circumferential relative position between the output shaft and the installation hole to make the output shaft rotate when driving the input end of the work head synchronous rotation; The output shaft and the installation hole are equipped with axial limiting structure, for fixing the axial relative position between the output shaft and the installation hole.

3. The hand-held electric impact screwdriver according to claim 2, wherein The circumferential limiting structure is that the cross section of the output shaft is regular polygon, and the cross section of the installation hole is regular polygon compatible with the cross section of the output shaft.

4. The hand-held electric impact cable stripping machine of claim 2, wherein, The axial limiting structure is that connecting piece is threaded on the first hole of the output shaft, and the connecting piece is at least one end after stretching out the first hole and stretches into the second hole provided on the inner side wall of the installation hole.

5. The hand-held electric impact screwdriver according to claim 4, wherein The axial limiting structure includes a connecting piece, a first hole and two second holes, the two ends of the first hole are respectively aligned with the two second holes to make the three cooperate to form a containing through hole; the connecting piece is located in the containing through hole, and the connecting piece is threaded through the first hole and the two second holes respectively.

6. The hand-held electric impact screwdriver according to claim 5, wherein The two ends of the containing through hole are respectively provided on the outer side wall of the input end of the work head; the connecting piece is a pin, the pin is threaded through the containing through hole; the pin and the input end of the work head are provided with an anti-drop piece, and the anti-drop piece is used to prevent the pin from falling out of the containing through hole.

7. The hand-held electric impact screwdriver according to claim 6, characterized in that The outer side wall of the input end of the work head is provided with an annular groove, and the two ends of the containing through hole are respectively provided in the annular groove; the anti-drop piece is a rubber ring, the rubber ring is sleeved on the input end of the work head and is contained in the annular groove to prevent the pin from falling out of the containing through hole.

8. The hand-held electric impact cable stripping machine of claim 1, wherein, The inner side wall of the installation cylinder is provided with an axial limiting block, and the outer side wall of the circular plate tooth is provided with an axial limiting groove matched with the axial limiting block, the axial limiting block is contained and installed in the axial limiting groove to make the work head rotate and drive the circular plate tooth to rotate synchronously.

9. The hand-held electric impact screwdriver according to claim 8, characterized in that The inner side wall of the installation cylinder is provided with an axial installation groove, the axial installation groove contains a special-shaped key, the surface of the special-shaped key towards the radial outer side is provided with a threaded hole, the side wall of the installation cylinder is provided with a matching hole corresponding to the threaded hole, and a tight screw is threaded through the matching hole and is screwed with the threaded hole on the special-shaped key; the part of the special-shaped key protruding from the inner side wall of the installation cylinder forms the axial limiting block.

10. The hand-held electric impact screwdriver according to claim 1, wherein The outer side wall of the round die is provided with a first positioning hole, and the side wall of the mounting cylinder is provided with a second positioning hole corresponding to the first positioning hole. A positioning screw is inserted into the first positioning hole through the second positioning hole.

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