CN221362743U - Screw thread turning cutter with adjustable helix angle - Google Patents
Screw thread turning cutter with adjustable helix angle Download PDFInfo
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- CN221362743U CN221362743U CN202322826822.2U CN202322826822U CN221362743U CN 221362743 U CN221362743 U CN 221362743U CN 202322826822 U CN202322826822 U CN 202322826822U CN 221362743 U CN221362743 U CN 221362743U
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- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 2
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- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a screw thread turning tool with an adjustable lead angle, and relates to the field of machining tools. A threading tool with an adjustable machining lead angle is provided, which is simpler and more reliable. The screw thread turning cutter with adjustable helix angle comprises a cutter bar, a cutter head and a blade, wherein the cutter head is arranged on the cutter bar, and the blade is arranged on the cutter head; the tool bit mounting and adjusting structure is also included; the cutter bar is provided with a cutter bit hole and two adjusting screw holes, the cutter bit hole is axially arranged along the cutter bar and extends backwards from the front end of the cutter bit hole, the adjusting screw holes extend from the upper surface of the cutter bar to the cutter bit hole, and the two adjusting screw holes are respectively positioned at two sides of the axis of the cutter bit hole; the cutter head is provided with a positioning column, material is removed on the positioning column to form two adjusting surfaces positioned on two sides of the axis of the positioning column, and the positioning column is inserted into the cutter head hole and matched with the cutter head hole; the installation adjusting structure comprises two adjusting screws which are respectively connected with the two adjusting screw holes in a threaded manner and respectively propped against the two adjusting surfaces.
Description
Technical Field
The utility model relates to the field of machining tools, in particular to a screw turning tool with an adjustable lead angle.
Background
The lead angle is also called the lead angle, and is the angle between the tangent line of the spiral line and the plane perpendicular to the thread axis on the pitch diameter cylinder or pitch diameter cone. Different threads and different specific designs of the same thread may have different lead angles. Turning is a common way of thread machining, and current thread turning tools often comprise a cutter bar and a blade mounted on the cutter bar, and different turning tools are often adopted at present for machining threads with different lead angles; this requires the machining enterprise to be equipped with various threading tools, which is obviously less economical.
Some patents disclose thread turning tools with adjustable lead angle. For example, chinese patent application number 202222323570.7 discloses a turning tool. The blade of the turning tool is connected to the tool bit, the tool shank is cylindrical, and the tool bit is fixed at one end of the tool shank; a cylindrical hole is formed along the extending direction of the collet, the cutter handle is arranged in the cylindrical hole, one end, close to the cutter handle, of the cutter head is abutted with the end part of the collet, and the cutter handle can rotate in the cylindrical hole relative to the collet; the locking piece can be connected with one end of the knife handle far away from the knife head so as to fix the knife handle relative to the clamping sleeve. The angle of the cutting action surface where the blade is positioned relative to the horizontal plane can be changed by rotating the cutter handle relative to the clamping sleeve by a certain angle, so that the turning tool can be suitable for turning threads with different helix angles during the thread turning operation. The turning tool can adapt to thread turning with different helix angles; however, during thread turning, the force imparted by the workpiece to the insert is tangential to the insert, which tends to rotate the insert; the turning tool relies on frictional force to prevent the tool bit from rotating, and the rotation prevention is unreliable.
Chinese patent No. 201820887154.0 discloses a threading tool with adjustable thread lead angle, which comprises an adjustable tool bit provided with a blade, wherein the adjustable tool bit is provided with a circular arc waist-shaped hole; the tool comprises a tool handle, wherein the end face of the tail end of the tool handle is provided with a thread fastening hole, and the circular arc waist-shaped hole corresponds to the thread fastening hole; the cutter handle is detachably and fixedly connected with the adjustable cutter head through at least one bolt in the circular arc waist-shaped hole; the screw thread cutting processing with different helix angles is realized by adjusting the relative angle between the cutter head and the cutter handle; the end face of the tail end of the cutter handle is provided with a plurality of first radial straight tooth grooves, and the joint face of the adjustable cutter head is provided with a plurality of second radial straight tooth grooves; the first radial straight tooth grooves and the second radial straight tooth grooves are meshed with each other, so that the cutter head can be prevented from rotating during machining. The turning tool is high in reliability of preventing the tool bit from rotating during machining, but the angle of the tool bit can be adjusted extremely and cannot be adjusted steplessly, and the machining difficulty of a plurality of radial straight tooth grooves is high, so that the cost of the tool is high.
Disclosure of utility model
The utility model aims to solve the technical problems that: the screw thread turning tool with adjustable screw angle for machining is provided.
The technical scheme adopted for solving the technical problems is as follows: the screw thread turning cutter with adjustable helix angle comprises a cutter bar, a cutter head and a blade, wherein the cutter head is arranged on the cutter bar, and the blade is arranged on the cutter head; the tool bit mounting and adjusting structure is also included; the cutter bar is provided with a cutter bit hole and two adjusting screw holes, the cutter bit hole is axially arranged along the cutter bar and extends backwards from the front end of the cutter bit hole, the adjusting screw holes extend from the upper surface of the cutter bar to the cutter bit hole, and the two adjusting screw holes are respectively positioned at two sides of the axis of the cutter bit hole; the cutter head is provided with a positioning column, material is removed on the positioning column to form two adjusting surfaces positioned on two sides of the axis of the positioning column, and the positioning column is inserted into the cutter head hole and matched with the cutter head hole; the installation adjusting structure comprises two adjusting screws which are respectively connected with the two adjusting screw holes in a threaded manner and respectively propped against the two adjusting surfaces.
Further is: the two adjusting surfaces are symmetrically arranged by taking the axis of the positioning column as the center; the two adjusting screws are symmetrically arranged by taking the axis of the tool bit hole as the center.
Further is: the adjusting screw is arranged in the vertical direction, and when the tool bit is positioned in the middle position, the adjusting screw is perpendicular to the adjusting surface.
Further is: the adjusting screw inclines to set up, and the distance of two adjusting screw upper ends is greater than the distance of two lower extreme, and when the tool bit was located the meso position, adjusting screw was perpendicular with the regulating surface.
Further is: the end of the adjusting screw is provided with a spherical top head which is propped against the adjusting surface.
Further is: the cutter head is provided with a mounting hole, and the mounting hole and the positioning column are coaxially arranged and penetrate through the cutter head; the tool bit installation adjusting structure comprises a mounting bolt, the mounting bolt penetrates through the mounting hole and is in threaded connection with the tool bar, and the mounting bolt compresses the tool bit.
Further is: the end part of the mounting hole is a countersunk hole, and the bolt head of the mounting bolt is positioned in the countersunk hole.
The beneficial effects of the utility model are as follows: the utility model adopts the same structure as the prior art, namely, the cutter head is arranged on the cutter bar, the cutter blade is arranged on the cutter head, the cutter head can rotate to drive the cutter blade to rotate, and the angle of the cutter blade is changed so as to adapt to the requirements of processing threads with different helix angles.
The difference is that the angle adjustment mode of the cutter head is different. As shown in fig. 4 and 5, one adjusting screw is loosened to move upwards, then the other adjusting screw is tightened to move downwards to push against the positioning column, and the positioning column is rotated until the adjusting surface is closely attached to the loosened adjusting screw again, so that the adjustment is completed.
The adjusting mode of the utility model is simpler and more convenient; the two adjusting screws are propped against the two adjusting surfaces, so that the rotation of the cutter head during processing can be prevented, and the reliability is high; the structure is simple, the processing is convenient, and the cost of the cutter can be reduced; stepless adjustment can also be realized.
Drawings
FIG. 1 is a block diagram of a screw turning tool with adjustable lead angle;
FIG. 2 is an exploded view of the assembly of a screw turning tool with adjustable lead angle;
FIG. 3 is an axial cross-sectional view of a screw thread turning tool with adjustable lead angle;
FIG. 4 is a radial cross-sectional view (section A-A of FIG. 3) of a screw thread turning tool with adjustable lead angle;
FIG. 5 is a state diagram of the screw turning tool with adjustable lead angle after adjustment;
FIG. 6 is a radial cross-sectional view of another adjustable lead angle threading tool;
Marked in the figure as: the tool comprises a tool bar 1, a tool bit hole 11, an adjusting screw hole 12, a tool bit 2, a positioning column 21, an adjusting surface 211, a mounting hole 22, a countersunk hole 221, a tool blade 3, a tool bit mounting adjusting structure 4, an adjusting screw 41, a plug 411, a mounting bolt 42 and a bolt head 421.
Detailed Description
The utility model is further described below with reference to the drawings and the detailed description.
As shown in fig. 1 to 4, the screw turning tool with adjustable lead angle comprises a tool bar 1, a tool bit 2 and a blade 3, wherein the tool bit 2 is arranged on the tool bar 1, and the blade 3 is arranged on the tool bit 2; the tool bit mounting and adjusting structure 4 is also included; the cutter bar 1 is provided with a cutter bit hole 11 and two adjusting screw holes 12, the cutter bit hole 11 is axially arranged along the cutter bar 1 and extends backwards from the front end of the cutter bit hole 11, the adjusting screw holes 12 extend to the cutter bit hole 11 from the upper surface of the cutter bar 1, and the two adjusting screw holes 12 are respectively positioned at two sides of the axis of the cutter bit hole 11; the tool bit 2 is provided with a positioning column 21, two adjusting surfaces 211 positioned on two sides of the axis of the positioning column 21 are formed by removing materials on the positioning column 21, and the positioning column 21 is inserted into the tool bit hole 11 and matched with the tool bit hole 11; the mounting and adjusting structure comprises two adjusting screws 41, and the two adjusting screws 41 are respectively in threaded connection with the two adjusting screw holes 12 and respectively prop against the two adjusting surfaces 211.
The utility model adopts the same structure as the prior art, namely, the cutter head 2 is arranged on the cutter bar 1, the cutter blade 3 is arranged on the cutter head 2, the cutter head 2 can rotate to drive the cutter blade 3 to rotate, and the angle of the cutter blade 3 is changed so as to adapt to the requirements of processing threads with different helix angles.
The difference is that the angle adjustment mode of the cutter head 2 is different. As shown in fig. 4 and 5, one of the adjusting screws 41 is loosened to be moved upward, and then the other adjusting screw 41 is tightened to be moved downward to push against the positioning column 21, so that the positioning column 21 is rotated until the adjusting surface 211 is again brought into close contact with the loosened adjusting screw 41, thereby completing the adjustment.
The adjusting mode of the utility model is simpler and more convenient; the two adjusting screws 41 are propped against the two adjusting surfaces 211, so that the tool bit 3 can be prevented from rotating during processing, and the reliability is high.
Specifically, it is preferable that the two adjustment surfaces 211 are symmetrically arranged with the axis of the positioning column 21 as the center; the two adjusting screws 41 are symmetrically arranged about the axis of the bit hole 11.
The adjusting surface 211 and the adjusting screw 41 may be specifically disposed in such a manner that the adjusting screw 41 is disposed in the up-down direction as shown in fig. 4, and the adjusting screw 41 is perpendicular to the adjusting surface 211 when the bit 2 is positioned at the middle position. The "bit 2 is located at the middle position" means a state in which the symmetry center planes of the two adjustment surfaces 211 are vertically disposed. In this state both adjusting surfaces 211 are horizontal. Preferably both adjustment surfaces extend through the axis of the positioning post 21.
As shown in fig. 6, the adjusting surface 211 and the adjusting screw 41 may be arranged in a specific manner, the adjusting screw 41 is arranged obliquely, the distance between the upper ends of the two adjusting screws 41 is greater than the distance between the lower ends of the two adjusting screws, and when the cutter head 2 is located at the middle position, the adjusting screw 41 is perpendicular to the adjusting surface 211.
The advantage of this arrangement over the forward one is that the distance between the upper ends of the two adjusting screws 41 is greater, and the adjusting space is greater if the adjusting screws 41 are turned by an external hexagonal wrench.
Further, the end of the adjusting screw 41 is preferably provided with a spherical plug 411, and the plug 411 is propped against the adjusting surface 211. The spherical plug 411 is more able to accommodate the change in angle of the adjustment surface 211.
The specific way of mounting the cutter head 2 on the cutter bar 1 is as follows: the tool bit 2 is provided with a mounting hole 22, and the mounting hole 22 and the positioning column 21 are coaxially arranged and penetrate through the tool bit 2; the tool bit mounting and adjusting structure 4 comprises a mounting bolt 42, the mounting bolt 42 penetrates through the mounting hole 22 and is in threaded connection with the tool bar 1, and the mounting bolt 42 presses the tool bit 2.
The positioning column 21 is inserted into the tool bit hole 11 and matched with the tool bit hole 11 to limit the movement of the tool bit 2 up and down and left and right. The mounting bolts 42 compress the tool bit 2 to limit the forward movement of the tool bit 2. The mounting bolts 42 press the cutter head 2 and the two adjusting screws 41 respectively prop against the two adjusting surfaces 211 to jointly limit the rotation of the cutter head 2, so that the cutter head 2 is reliably fixed. The number is that the mounting bolt 42 is loosened, and the angle of the cutter head 2 can be adjusted by rotating the adjusting screw 41.
The mounting hole 22 is preferably countersunk at an end thereof, and the bolt head 421 of the mounting bolt 42 is located in the countersunk hole 221. The bolt head 421 is positioned in the counter bore 221, so that the volume of the turning tool can be reduced, and the bolt head 421 is prevented from touching a workpiece during machining.
Claims (7)
1. The screw thread turning tool with the adjustable helix angle comprises a tool bar (1), a tool bit (2) and a blade (3), wherein the tool bit (2) is arranged on the tool bar (1), and the blade (3) is arranged on the tool bit (2); the method is characterized in that: comprises a cutter head mounting and adjusting structure (4); the cutter bar (1) is provided with a cutter bit hole (11) and two adjusting screw holes (12), the cutter bit hole (11) is axially arranged along the cutter bar (1) and extends backwards from the front end of the cutter bit hole (11), the adjusting screw holes (12) extend from the upper surface of the cutter bar (1) to the cutter bit hole (11), and the two adjusting screw holes (12) are respectively positioned at two sides of the axis of the cutter bit hole (11); the tool bit (2) is provided with a positioning column (21), material is removed from the positioning column (21) to form two adjusting surfaces (211) positioned on two sides of the axis of the positioning column (21), and the positioning column (21) is inserted into the tool bit hole (11) and matched with the tool bit hole (11); the installation adjusting structure () comprises two adjusting screws (41), wherein the two adjusting screws (41) are respectively in threaded connection with the two adjusting screw holes (12) and respectively prop against the two adjusting surfaces (211).
2. The adjustable lead angle threading tool of claim 1 wherein: the two adjusting surfaces (211) are symmetrically arranged by taking the axis of the positioning column (21) as the center; the two adjusting screws (41) are symmetrically arranged by taking the axis of the tool bit hole (11) as the center.
3. The adjustable lead angle threading tool of claim 2 wherein: the adjusting screw (41) is arranged in the up-down direction, and when the cutter head (2) is positioned in the middle position, the adjusting screw (41) is perpendicular to the adjusting surface (211).
4. The adjustable lead angle threading tool of claim 2 wherein: the adjusting screws (41) are obliquely arranged, the distance between the upper ends of the two adjusting screws (41) is larger than the distance between the lower ends of the two adjusting screws, and when the cutter head (2) is located in the middle position, the adjusting screws (41) are perpendicular to the adjusting surface (211).
5. The adjustable lead angle threading tool of claim 1 wherein: the end of the adjusting screw (41) is provided with a spherical plug (411), and the plug (411) is propped against the adjusting surface (211).
6. The screw turning tool with adjustable lead angle according to any one of claims 1 to 5, characterized in that: the cutter head (2) is provided with a mounting hole (22), and the mounting hole (22) and the positioning column (21) are coaxially arranged and penetrate through the cutter head (2); the tool bit installation adjusting structure (4) comprises a mounting bolt (42), the mounting bolt (42) penetrates through the mounting hole (22) and is in threaded connection with the tool bar (1), and the mounting bolt (42) presses the tool bit (2).
7. The adjustable lead angle threading tool of claim 6 wherein: the end part of the mounting hole (22) is a countersunk hole (221), and a bolt head (421) of the mounting bolt (42) is positioned in the countersunk hole (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322826822.2U CN221362743U (en) | 2023-10-20 | 2023-10-20 | Screw thread turning cutter with adjustable helix angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322826822.2U CN221362743U (en) | 2023-10-20 | 2023-10-20 | Screw thread turning cutter with adjustable helix angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221362743U true CN221362743U (en) | 2024-07-19 |
Family
ID=91858451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322826822.2U Active CN221362743U (en) | 2023-10-20 | 2023-10-20 | Screw thread turning cutter with adjustable helix angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221362743U (en) |
-
2023
- 2023-10-20 CN CN202322826822.2U patent/CN221362743U/en active Active
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