Turning tool with rotatable thread spiral angle

Abstract

The utility model relates to a turning tool with a rotatable thread spiral angle, and belongs to the technical field of metal mechanical cutting machining. The device comprises a cutter block (1), a rotating cutter body (2) and a clamping body (3), wherein the cutter block (1) is detachably arranged at one end of the rotating cutter body (2); the clamping body (3) is matched with the tool rest installation hole, the clamping body (3) is arranged on the side wall of the end, away from the tool block (1), of the rotating tool body (2) in a penetrating mode, and a clamping opening (31) is formed in the clamping body (3) in the axial direction. According to the device, the rotating cutter body (2) is fixed on the cutter rest through the clamping body (3), the clamping body (3) and the rotating cutter body (2) are fastened or loosened by screwing a cutter rest bolt, and the rotating angle of the rotating cutter body (2) is adjusted. The problems that in the existing thread turning process, the lead angle of a turning tool thread is fixed, the time for sharpening the turning tool is prolonged, and the strength of the turning tool is reduced are solved.

Description

Technical Field

[0001] The utility model relates to a turning tool with a rotatable thread spiral angle, belonging to the technical field of metal mechanical cutting processing. Background Art

[0002] When machining modular threads and trapezoidal screws for mechanical cutting, the thread turning tool must be ground to a thread lead angle according to the thread rotation direction. When turning threads, due to the influence of the helix, the back angles a1 and a2 on both sides of the turning tool during operation are different from the back angles on both sides after sharpening. The side back angle a1 in the direction of the tool feed will decrease, and the side back angle a2 in the direction of the tool feed will increase. The value of the decrease or increase is the helix angle of the thread helix. However, sharpening the back angles on both sides of the turning tool reduces the strength of the turning tool and prolongs the sharpening time of the back angles on both sides of the sharpening thread turning tool. At the same time, the existing turning tool has a fixed thread lead angle, which makes it difficult to solve the problems of the change of the thread lead angle during the machining of modular threads and trapezoidal screw parts during mechanical cutting, the defects of the back angles on both sides of the sharpening turning tool that reduce the strength of the turning tool, and the time required to sharpen the turning tool. Taking our company's water supply and drainage system as an example, a large number of lead screws need to be processed every year, of which left-handed lead screws account for 80%. Each time the lead screw is processed, the turning tool needs to be sharpened according to comprehensive factors such as the workpiece's pitch, lead, spiral direction, and thread lead angle, which increases the tool cost and labor cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the thread rise angle of the existing turning tool is fixed when turning threads, which increases the time for sharpening the turning tool and reduces the strength of the turning tool.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a turning tool with a rotatable thread helical angle, comprising a tool block, a rotating tool body and a clamping body, wherein the tool block is detachably arranged at one end of the rotating tool body; the clamping body is adapted to the tool holder mounting hole, the clamping body is penetrated on the side wall of one end of the rotating tool body away from the tool block, and the clamping body is axially provided with a clamping opening.

[0005] The device further comprises a fastener, and a mounting groove is formed at the end of the rotating blade body, and one end of the blade block is inserted into the mounting groove and connected to the rotating blade body via the fastener.

[0006] Furthermore, the fastener in the above device is a screw structure, threaded holes are arranged at intervals on the side walls of the installation groove, the fastener is screwed into the threaded holes, and the screwed-in end is in contact and connection with the knife block.

[0007] Wherein, a buffer opening is obliquely provided on the rotating knife body in the above device.

[0008] Furthermore, in the above device, the width of the buffer opening is 1 to 2 mm.

[0009] Wherein, the width of the clamping opening in the above device is 1 to 2 mm.

[0010] Furthermore, the above device also includes an axial fixing member, the rotating cutter body is a step-shaped structure away from the cutter block end, the clamping body is passed through the step shaft, one end of the clamping body is in contact with the step-shaped shoulder end face, and the other end is connected to the axial fixing member.

[0011] Furthermore, the axial fixing member in the above device includes a nut, and the rotating blade body is provided with a connecting portion at the end away from the blade block, and an external thread is provided on the outer side of the connecting portion. The nut is screwed into the connecting portion, and the screwed-in end can be in contact and connected with the end face of the clamping body.

[0012] Furthermore, the above device also includes a washer, which is arranged between the nut and the clamping body.

[0013] Furthermore, the inclined upper end of the buffer opening in the above device is arranged close to the end of the blade block, and the buffer opening extends into the rotating blade body along the side wall of the rotating blade body between the blade block and the clamping body to 1 / 2 to 4 / 5 of the thickness of the rotating blade body.

[0014] The beneficial effects of the utility model are as follows: when the turning tool of the device is used to process a modular thread or a lead screw, it is only necessary to press the rotation direction of the thread and use a universal angle ruler to correct the helix angle to turn threads with different pitches and rotation directions. It can save tools and reduce the time for sharpening and tool installation. The tool block of the device is installed in the square hole of the rotating tool body and fixed with a fastening screw to ensure the stability of the tool block, and a buffer opening is opened on the rotating tool body to make it elastic. In fact, the rotating tool body is installed in the clamping body, and the helix angle is corrected with a universal angle ruler, and then the nut is tightened to ensure that the angle of the tool block is controlled. The clamping body has an axial clamping opening. When the tool holder bolt is screwed down, the clamping body shrinks inward and holds the rotating tool body tightly. When the tool holder bolt is screwed up, the clamping body rebounds outward, and the rotating tool body can be rotated at any angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the full cross-section structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the rotating cutter body of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamping body of the utility model.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the clamping body of the utility model.

[0019] Figure numerals: 1 is a knife block, 2 is a rotating knife body, 21 is a buffer opening, 22 is a connecting portion, 23 is a mounting groove, 24 is a threaded hole, 3 is a clamping body, 31 is a clamping opening, 4 is a fastener, 5 is a washer, and 6 is a nut. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 4 As shown, a turning tool with a rotatable thread helix angle of the utility model comprises a tool block 1, a rotating tool body 2 and a clamping body 3, wherein the tool block 1 is detachably arranged at one end of the rotating tool body 2; the clamping body 3 is adapted to the tool holder mounting hole, the clamping body 3 is penetrated on the side wall of the rotating tool body 2 at one end away from the tool block 1, and the clamping body 3 is provided with a clamping opening 31 along the axial direction. It can be understood by those skilled in the art that the device controls the angle of the helix rise angle of the helical line rotation direction through a universal angle ruler, reduces the sharpening time of the back angles on both sides of the turning tool, improves the strength of the turning tool, and reduces labor and tool costs. The clamping body 3 of the device is adapted to the tool holder mounting hole, and can actually be penetrated on the side wall of the rotating tool body 2 at one end away from the tool block 1, and then installed on the tool holder. Since the clamping body 3 has an axial clamping opening 31, when the tool holder bolt is screwed down, the clamping body 3 shrinks inwards and holds the rotating tool body 2 tightly, and when the tool holder bolt is screwed up, the clamping body 3 rebounds outwards, and the rotating tool body 2 can be rotated at any angle. The blade block 1 is detachably arranged at one end of the rotating blade body 2, so that it can be conveniently replaced later according to the wear condition.

[0022] Preferably, the device further comprises a fastener 4, a mounting groove 23 is provided at the end of the rotating blade body 2, one end of the blade block 1 is inserted into the mounting groove 23 and connected to the rotating blade body 2 via the fastener 4. It can be understood by those skilled in the art that the device further preferably connects the blade block 1 to the rotating blade body 2 via the fastener 4, specifically, a mounting groove 23 is provided at the end of the rotating blade body 2, one end of the blade block 1 is inserted into the mounting groove 23, and the blade block 1 is connected to the rotating blade body 2 under the action of the fastener 4.

[0023] Preferably, the fastener 4 in the above device is a screw structure, threaded holes 24 are arranged at intervals on the side wall of the installation groove 23, the fastener 4 is screwed into the threaded hole 24, and the screwed end is in contact with the blade block 1. It can be understood by those skilled in the art that the present device further preferably has the fastener 4 as a screw, and threaded holes 24 are arranged at intervals on the side wall of the installation groove 23, and the number of threaded holes 24 can actually be selected according to needs, preferably the shape of the installation groove 23 should be adapted to the shape of the connection end of the blade block 1, so that the blade block 1 is convenient to be inserted into the installation groove 23, and it can be preferably provided with at least one threaded hole 24 on each side wall of the installation groove 23, and the fastener 4 is actually screwed into the threaded hole 24, and the screwed end is abutted against the side wall of the connection end of the blade block 1 by the thread preload, so as to realize the connection and fixation of the blade block 1 and the rotating blade body 2.

[0024] Preferably, the rotating cutter body 2 in the above device is provided with a buffer opening 21 obliquely. Those skilled in the art will appreciate that, in order to buffer the turning impact, the device preferably provides a buffer opening 21 obliquely on the rotating cutter body 2 to make it elastic.

[0025] Preferably, the width of the buffer opening 21 in the above device is 1 to 2 mm. Those skilled in the art will appreciate that, considering the structural strength of the rotating blade body 2, the width of the buffer opening 21 is preferably 1 to 2 mm.

[0026] Preferably, the width of the clamping opening 31 in the above device is 1 to 2 mm. Those skilled in the art will understand that the present device only preferably has a width of the clamping opening 31 of 1 to 2 mm to ensure that the clamping body 3 is tightly connected to the side wall of the rotating blade body 2 after being clamped.

[0027] Preferably, the above device also includes an axial fixing part, and the end of the rotating cutter body 2 away from the cutter block 1 is a step-shaped structure, and the clamping body 3 is inserted into the step shaft, and one end of the clamping body 3 is in contact and connected with the step-shaped shoulder end face, and the other end is connected with the axial fixing part. It can be understood by those skilled in the art that in order to achieve axial positioning after the clamping body 3 is sleeved on the rotating cutter body 2, the present device preferably has a step-shaped structure at the end of the rotating cutter body 2 away from the cutter block 1, and the size should be reduced successively, and the clamping body 3 is actually inserted into the step shaft, and one end of the clamping body 3 is in contact and connected with the step-shaped shoulder end face, and the other end is connected with the axial fixing part, and the axial fixing part is inserted into the rotating cutter body 2, and the position is adjustable, and the axial fixing of the clamping body 3 is actually achieved by adjusting the position of the axial fixing part on the rotating cutter body 2.

[0028] Preferably, the axial fixing member in the above device includes a nut 6, and a connecting portion 22 is provided at the end of the rotating blade body 2 away from the blade block 1, and an external thread is provided on the outer side of the connecting portion 22. The nut 6 is screwed into the connecting portion 22, and the screwed-in end can be in contact and connected with the end face of the clamping body 3. It can be understood by those skilled in the art that the preferred structure of the axial fixing member of the present device specifically includes a nut 6, and a connecting portion 22 is provided at the end of the rotating blade body 2 away from the blade block 1. In fact, it is preferred that the connecting portion 22 is located at a stepped structure, and an external thread is provided on the outer side of the connecting portion 22. The nut 6 is screwed into the connecting portion 22, and the screwed-in end can be in contact and connected with the end face of the clamping body 3. This structure enables the clamping body 3 to be axially fixed through the shaft shoulder side wall and the nut 6.

[0029] Preferably, the above device further includes a washer 5, which is arranged between the nut 6 and the clamping body 3. Those skilled in the art can understand that in order to ensure good contact between the end of the clamping body 3 and the screw-in end of the nut 6, it is actually preferred to arrange the washer 5 between the nut 6 and the clamping body 3, so that the end of the clamping body 3 is connected to one side of the washer 5, and the other side of the washer 5 is connected to the nut 6, so as to ensure that the fastening surface of the clamping body 3 is effectively stressed.

[0030] Preferably, the buffer opening 21 in the above device is arranged at an inclined upper end close to the end of the blade block 1, and the buffer opening 21 extends along the side wall of the rotating blade body 2 between the blade block 1 and the clamping body 3 to 1 / 2 to 4 / 5 of the thickness of the rotating blade body 2. It can be understood by those skilled in the art that the device preferably has an inclined direction and length of the buffer opening 21, specifically, the buffer opening 21 is arranged at an inclined upper end close to the end of the blade block 1, and the buffer opening 21 extends along the side wall of the rotating blade body 2 between the blade block 1 and the clamping body 3 to 1 / 2 to 4 / 5 of the thickness of the rotating blade body 2, and the thickness here can be either a diameter or a width, which is specifically determined according to the structure of the rotating blade body 2.

Claims

1. A turning tool with a rotatable thread helix angle, characterized in that: The invention comprises a knife block (1), a rotating knife body (2) and a clamping body (3); the knife block (1) is detachably arranged at one end of the rotating knife body (2); the clamping body (3) is adapted to the mounting hole of the knife holder; the clamping body (3) is penetrated on the side wall of the rotating knife body (2) at one end away from the knife block (1); and the clamping body (3) is provided with a clamping opening (31) along the axial direction.

2. A turning tool with a rotatable thread helix angle as claimed in claim 1, characterized in that: It also includes a fastener (4); a mounting groove (23) is provided at the end of the rotating blade body (2); one end of the blade block (1) is inserted into the mounting groove (23) and is connected to the rotating blade body (2) via the fastener (4).

3. A turning tool with a rotatable thread helix angle as claimed in claim 2, characterized in that: The fastener (4) is a screw structure, and threaded holes (24) are arranged at intervals on the side wall of the installation groove (23). The fastener (4) is screwed into the threaded hole (24), and the screwed-in end is in contact with and connected to the blade block (1).

4. A turning tool with a rotatable thread helix angle as claimed in claim 1, characterized in that: A buffer opening (21) is obliquely arranged on the rotating blade body (2).

5. A turning tool with a rotatable thread helix angle as claimed in claim 4, characterized in that: The width of the buffer opening (21) is 1 to 2 mm.

6. A turning tool with a rotatable thread helix angle as claimed in claim 1, characterized in that: The width of the clamping opening (31) is 1 to 2 mm.

7. A turning tool with a rotatable thread helix angle as claimed in claim 6, characterized in that: It also includes an axial fixing piece, the end of the rotating blade body (2) away from the blade block (1) is a step-shaped structure, the clamping body (3) is inserted into the step shaft, one end of the clamping body (3) is in contact with and connected to the end face of the step-shaped shaft shoulder, and the other end is connected to the axial fixing piece.

8. A turning tool with a rotatable thread helix angle as claimed in claim 7, characterized in that: The axial fixing member comprises a nut (6); a connecting portion (22) is provided at the end of the rotating blade body (2) away from the blade block (1); an external thread is provided on the outer side of the connecting portion (22); the nut (6) is screwed into the connecting portion (22), and the screwed-in end can be in contact with and connected to the end surface of the clamping body (3).

9. A turning tool with a rotatable thread helix angle as claimed in claim 8, characterized in that: It also comprises a washer (5), wherein the washer (5) is arranged between the nut (6) and the clamping body (3).

10. A turning tool with a rotatable thread helix angle as claimed in claim 4, characterized in that: The buffer opening (21) is arranged with its inclined upper end close to the end of the blade block (1), and the buffer opening (21) extends along the side wall of the rotating blade body (2) between the blade block (1) and the clamping body (3) to 1 / 2 to 4 / 5 of the thickness of the rotating blade body (2).

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