Machining tool for removing head and tail threads of thread of threaded hole

Abstract

The utility model relates to the technical field of cutters, in particular to a machining cutter for removing head and tail teeth of a thread of a threaded hole, which comprises a mounting head, and at least one mounting groove is formed in one end of the periphery of the mounting head; the milling blade is arranged at the end part of one side of the mounting groove, and one end of the milling blade extends to the periphery of the mounting head; the cutting edges are movably arranged at the two ends of the milling cutter blade; the adjusting assembly is arranged on the rod body; when a burr flanging appears at the position of a threaded hole formed in a workpiece through the milling blade, the cutting edge can be moved to the position flush with the milling blade through the arranged adjusting assembly, and the lamellar burr flanging appearing at the threaded hole can be eliminated through the cutting edge in the rotating state; and therefore, the machining precision of the formed thread is effectively improved, defective products are avoided, and the forming quality of the threaded hole is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a cutting tool for removing the first and last threads of a threaded hole. Background Art

[0002] A milling machine mainly refers to a machine tool that uses a milling cutter to process various surfaces of a workpiece. Usually, the rotation of the milling cutter is the main motion, and the movement of the workpiece and the milling cutter is the feed motion. When the workpiece is threaded by the milling cutter, the following problems usually occur in the patent. See the publication number CN217858978U, which discloses an adjustable chamfering tool. The adjustable chamfering tool includes a tool holder, a tool holder, a blade one and a blade two. The tool holder is composed of a tool handle and a base. A blade mounting groove one and a tool holder mounting part are provided on the base, and the blade mounting groove one and the tool holder mounting part are symmetrically arranged in a group. The tool holder is installed in the tool holder mounting part. Although the patent removes the flanging burrs generated by the chamfering edge through the blade two on the tool, thereby effectively ensuring the quality of the workpiece after processing, there is still a problem that due to the different chamfering positions during the milling process, it is difficult to remove the burr flanging when the tool is withdrawn, thereby affecting the quality of the threaded hole after forming. Therefore, in the long-term research and development test process: the tool in the prior art is difficult to eliminate the burr flanging that appears at the position of the threaded hole formed on the workpiece, thereby easily producing defective products and reducing the forming quality of the threaded hole. Utility Model Content

[0003] In view of this, the purpose of the utility model is to propose a tool for removing the first and last threads of a threaded hole, so as to solve the problem that it is difficult to eliminate burrs and flanging at the mouth of a threaded hole formed on a workpiece, which easily produces defective products and reduces the forming quality of the threaded hole.

[0004] Based on the above-mentioned purpose, the utility model provides a tool for removing the first and last threads of a threaded hole, comprising: a connecting head, a positioning piece fixedly mounted on one end of the connecting head, and a slot opened at an end portion of one side of the positioning piece; also comprising: a rod body, detachably mounted on the middle part of one end of the positioning piece, a fixing block detachably mounted on one end of the rod body, a mounting head detachably mounted on one end of the fixing block, at least one mounting slot being opened at one end of the outer periphery of the mounting head; a milling blade, arranged at an end portion of one side of the mounting slot, and one end of the milling blade extending to the outer periphery of the mounting head, a cutting edge being opened on one side of the milling blade, and the cutting edge facing a side away from the mounting head; a cutting edge, movably arranged at both ends of the milling blade; an adjusting component, arranged on the rod body; wherein the adjusting component is used to control the moving position of the cutting edge, so that one end of the cutting edge is misaligned and flush with the cutting edge of the milling blade.

[0005] Preferably, three mounting grooves are provided, and angles of two adjacent mounting grooves are the same.

[0006] Preferably, a fastening bolt is threadedly inserted into one side of the installation groove, a fixing ring is sleeved around the outer periphery of the fastening bolt, the fixing ring is a hollow hexagonal column structure, and the milling cutter is fixedly installed on one side of the fixing ring.

[0007] Preferably, a guide block is fixedly installed on one side of the mounting groove near both ends, and a first positioning portion and a second positioning portion are integrally formed at one end of the cutting edge, the first positioning portion is a triangular prism structure, and the first positioning portion is arranged in close contact with the fixing ring, and the second positioning portion is a quadrangular prism structure, and the first positioning portion and the second positioning portion cooperate with the fixing ring and the guide block to limit the movement range of the cutting edge, and a receiving groove is formed between the first positioning portion and the second positioning portion, and a tube body is inserted through both sides of the middle part of the fixing block, one end of the tube body is inserted into the receiving groove, and a reserved space is formed between the tube body and the receiving groove, and the tube body is filled with oil, and the adjusting component drives the oil body to flow in and out of the reserved space, so that a negative pressure is formed in the reserved space to control the moving position of the cutting edge.

[0008] Preferably, the adjustment component includes: a chamber, which is opened inside the rod body, a sealing plug is movably inserted at one end of the chamber, a guide rod is fixedly installed at one end of the sealing plug, and a pressure block is fixedly installed at one end of the guide rod; a guide channel, which is opened on the rod body, the chamber and the guide channel are arranged in an L-shaped position, a transmission rod is fixedly installed at one end of the pressure block, one end of the transmission rod passes through the guide channel and extends to the periphery of the rod body, and the chamber, tube body and reserved space on one side of the sealing plug are communicated and are a sealed structure.

[0009] Preferably, one end of the transmission rod is hinged with a buckle, and a plurality of clamping blocks cooperating with the buckle are fixedly mounted on the periphery of the rod body.

[0010] The beneficial effects of the utility model are as follows: when burrs and flanging appear at the threaded hole mouth position formed by the milling cutter on the workpiece, the cutting edge can be moved to a position flush with the milling cutter through the provided adjustment component, and the rotating cutting edge can eliminate the thin-sheet burrs and flanging appearing at the threaded hole mouth, thereby effectively improving the processing accuracy of the formed thread, avoiding the production of defective products, and further improving the forming quality of the threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0014] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0015] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0016] Figure 5 This is a schematic diagram of the installation head end structure of the utility model.

[0017] The markings in the figure are: 1. Connecting head; 11. Positioning piece; 12. Slot; 2. Rod body; 3. Fixing block; 4. Mounting head; 41. Mounting slot; 42. Fastening bolt; 43. Fixing ring; 44. Milling blade; 5. Guide block; 51. Cutting edge; 52. First positioning portion; 53. Second positioning portion; 54. Accommodating groove; 55. Tube body; 6. Chamber; 61. Sealing plug; 62. Guide rod; 63. Pressing block; 64. Guide channel; 65. Transmission rod; 66. Buckle; 67. Block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. Example

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a tool for removing the first and last teeth of a threaded hole comprises: a connecting head 1, a positioning member 11 fixedly mounted on one end of the connecting head 1, and a slot 12 opened at an end of one side of the positioning member 11; it also comprises: a rod body 2, which is detachably mounted on the middle part of one end of the positioning member 11, a fixing block 3 is detachably mounted on one end of the rod body 2, a mounting head 4 is detachably mounted on one end of the fixing block 3, at least one mounting groove 41 is opened at one end of the outer periphery of the mounting head 4, three mounting grooves 41 are opened, and the angles of two adjacent mounting grooves 41 are the same. By providing three mounting grooves 41 with the same distribution position angle, the same frequency of washing and cutting processing can be performed on the workpiece with the help of a milling cutter 44; a milling cutter 44 is arranged at an end of one side of the mounting groove 41, and one end of the milling cutter 44 extends to the periphery of the mounting head 4, a cutting edge is opened on one side of the milling cutter 44, and the cutting edge faces the side away from the mounting head 4; a cutting edge 51 is movably arranged at both ends of the milling cutter 44; an adjustment component is arranged on the rod body 2.

[0020] Among them, the tool can be installed on the milling machine to realize thread processing through the connecting head 1 and the positioning member 11. At the same time, the positioning member 11 is provided with a slot 12 to facilitate positioning during the installation process. The rod body 2, the fixing block 3 and the mounting head 4 are connected in a detachable manner, which can facilitate the assembly of the tool and the purpose of replacement. The milling blade 44 provided on the mounting groove 41 can be used to form the thread of the workpiece. When the orifice position of the formed thread groove is due to different chamfering angles and part of the thread tooth structure is cut off, burrs and flanging will occur. At this time, the adjustment component provided can be used to It is used to control the moving position of the cutting edge 51 so that one end of the cutting edge 51 is offset and flush with the cutting edge of the milling blade 44. By moving the cutting edge 51 to a position flush with the milling blade 44, the rotating cutting edge 51 can eliminate the thin flaky burrs and flanging appearing at the threaded hole mouth, thereby effectively improving the processing accuracy of the formed thread, avoiding the generation of defective products, and further improving the forming quality of the threaded hole. By synchronously controlling the moving position of the cutting edge 51, the burrs and flanging appearing on the first and last teeth of the threaded hole can be removed, further improving the processing quality of the first and last teeth of the thread.

[0021] Furthermore, a fastening bolt 42 is threadedly inserted on one side of the installation groove 41, and a fixing ring 43 is provided on the outer periphery of the fastening bolt 42. The fixing ring 43 is a hollow hexagonal prism structure. The milling blade 44 is fixedly installed on one side of the fixing ring 43. By adjusting the insertion depth of the fastening bolt 42 in the installation groove 41, the milling blade 44 can be easily replaced.

[0022] A guide block 5 is fixedly installed near both ends of one side of the mounting groove 41. A first positioning portion 52 and a second positioning portion 53 are integrally formed at one end of the cutting edge 51. The first positioning portion 52 is a triangular prism structure, and the first positioning portion 52 is arranged in close contact with the fixing ring 43. The second positioning portion 53 is a quadrangular prism structure. The first positioning portion 52 and the second positioning portion 53 cooperate with the fixing ring 43 and the guide block 5 to limit the moving range of the cutting edge 51, so as to achieve the effect of limiting the moving position of the cutting edge 51. A receiving groove 54 is formed between the first positioning portion 52 and the second positioning portion 53. A tube body 55 is inserted through both sides of the middle of the fixing block 3. One end of the tube body 55 is inserted into the receiving groove 54, and a reserved space is formed between the tube body 55 and the receiving groove 54. The reserved space is a closed structure. The tube body 55 is filled with oil. The adjusting component drives the oil to flow in and out of the reserved space, so that the oil can form a negative pressure in the reserved space during the transfer process to control the moving position of the cutting edge 51. Example

[0023] The difference from the previous embodiment is that the adjustment component includes: a chamber 6, which is opened inside the rod body 2, and a sealing plug 61 is movably inserted at one end of the chamber 6, and a guide rod 62 is fixedly installed at one end of the sealing plug 61, and a pressure block 63 is fixedly installed at one end of the guide rod 62; a guide channel 64, which is opened on the rod body 2, and the chamber 6 and the guide channel 64 are arranged in an L-shaped position, and a transmission rod 65 is fixedly installed at one end of the pressure block 63, and one end of the transmission rod 65 passes through the guide channel 64 and extends to the periphery of the rod body 2, and the chamber 6, the tube body 55 and the reserved space on one side of the sealing plug 61 are connected and are sealed. The sealing structure is designed so that when the transmission rod 65 changes the position of the guide rod 62 in the chamber 6 through the pressure block 63, the oil in the sealing structure can be used to drive the adjustment of the position of the cutting edge 51 through the negative pressure, thereby changing the relative position of the cutting edge 51 and the milling blade 44. When the processed threaded hole has flanging burrs, the cutting edge 51 is moved to a position flush with the milling blade 44. The cutting edge 51 is driven by rotation to cut and remove the thin burrs at the thread groove hole position, thereby better improving the quality of the formed thread and avoiding the occurrence of burrs and flanging.

[0024] Furthermore, in order to facilitate the adjustment of the position of the transmission rod 65 to adjust the moving position of the cutting edge 51 and position the cutting edge 51, a buckle 66 is hinged at one end of the transmission rod 65, and a plurality of blocks 67 cooperating with the buckle 66 are fixedly installed on the periphery of the rod body 2, so that the adjusted cutting edge 51 can be effectively positioned at the required position at the end of the milling blade 44 to achieve the cutting effect.

[0025] Working principle: When in use, the tool can be installed on the milling machine through the connecting head 1 and the positioning part 11 to realize thread processing. The workpiece can be threaded by the milling blade 44 provided on the mounting groove 41. When the hole position of the formed thread groove is partly cut off due to the different chamfering angles, burrs and flanging will appear. By moving the cutting edge 51 to a position flush with the milling blade 44, the rotating cutting edge 51 will eliminate the thin burrs and flanging appearing at the thread hole mouth, thereby further improving the forming quality of the threaded hole.

Claims

1. A tool for removing the first and last threads of a threaded hole, comprising: A connector (1), a positioning member (11) fixedly mounted on one end of the connector (1), and a slot (12) opened at one end of the positioning member (11); characterized in that it also includes: a rod body (2) detachably mounted on the middle part of one end of the positioning member (11), a fixing block (3) detachably mounted on one end of the rod body (2), a mounting head (4) detachably mounted on one end of the fixing block (3), and at least one mounting slot (41) opened at one end of the outer periphery of the mounting head (4); a milling blade (44 ), arranged at one end of the mounting groove (41), and one end of the milling blade (44) extends to the periphery of the mounting head (4), and a cutting edge is opened on one side of the milling blade (44), and the cutting edge faces the side away from the mounting head (4); a cutting edge (51), movably arranged at both ends of the milling blade (44); an adjustment component, arranged on the rod body (2); wherein the adjustment component is used to control the moving position of the cutting edge (51), so that one end of the cutting edge (51) and the cutting edge of the milling blade (44) are arranged to be misaligned and flush.

2. A tool for removing the first and last threads of a threaded hole according to claim 1, characterized in that: Three installation grooves (41) are provided, and the angles of two adjacent installation grooves (41) are the same.

3. A tool for removing the first and last threads of a threaded hole according to claim 2, characterized in that: A fastening bolt (42) is threadedly inserted into one side of the installation groove (41), a fixing ring (43) is sleeved around the outer periphery of the fastening bolt (42), the fixing ring (43) is a hollow hexagonal column structure, and the milling blade (44) is fixedly mounted on one side of the fixing ring (43).

4. A tool for removing the first and last threads of a threaded hole according to claim 3, characterized in that: A guide block (5) is fixedly mounted on one side of the mounting groove (41) near both ends; a first positioning portion (52) and a second positioning portion (53) are integrally formed at one end of the cutting edge (51); the first positioning portion (52) is a triangular prism-shaped structure, and the first positioning portion (52) is arranged in close contact with the fixing ring (43); the second positioning portion (53) is a quadrangular prism-shaped structure; the first positioning portion (52) and the second positioning portion (53) cooperate with the fixing ring (43) and the guide block (5) to limit the movement of the cutting edge (51); A accommodating groove (54) is formed between the first positioning portion (52) and the second positioning portion (53), a tube body (55) is inserted through both sides of the middle of the fixing block (3), one end of the tube body (55) is inserted into the accommodating groove (54), and a reserved space is formed between the tube body (55) and the accommodating groove (54), the tube body (55) is filled with oil, and the regulating component drives the oil to flow into and out of the reserved space, so that negative pressure is formed in the reserved space to control the moving position of the cutting edge (51).

5. A tool for removing the first and last threads of a threaded hole according to claim 4, characterized in that: The adjustment assembly comprises: a chamber (6) opened inside the rod body (2), a sealing plug (61) movably inserted at one end of the chamber (6), a guide rod (62) fixedly mounted at one end of the sealing plug (61), and a pressure block (63) fixedly mounted at one end of the guide rod (62); a guide channel (64) opened on the rod body (2), the chamber (6) and the guide channel (64) being arranged in an L-shaped position, a transmission rod (65) fixedly mounted at one end of the pressure block (63), and one end of the transmission rod (65) passing through the guide channel and extending to the periphery of the rod body (2), and the chamber (6), the tube body (55) and the reserved space on one side of the sealing plug (61) are in communication and are a sealed structure.

6. A tool for removing the first and last threads of a threaded hole according to claim 5, characterized in that: A buckle (66) is hingedly connected to one end of the transmission rod (65), and a plurality of clamping blocks (67) cooperating with the buckle (66) are fixedly mounted on the periphery of the rod body (2).

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