CN114393227B

CN114393227B - Adjustable fine boring cutter for numerical control lathe

Info

Publication number: CN114393227B
Application number: CN202210101092.7A
Authority: CN
Inventors: 韦玉菊
Original assignee: Shenzhen Yikeli Cutting Tool Co ltd
Current assignee: Shenzhen Yikeli Cutting Tool Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-06-02
Anticipated expiration: 2042-01-27
Also published as: CN114393227A

Abstract

The invention discloses an adjustable fine boring cutter for a numerical control lathe, which comprises a cutter holder, wherein a main cutter blade group and an auxiliary cutter blade group are respectively arranged on the front side and the back side of the cutter holder through a main rotating shaft and an auxiliary rotating shaft, the two cutter blade groups share a fixed structure, an adjusting bolt is arranged on one side of the main cutter blade group, the adjusting bolt is driven at one end of a driving part of the main cutter blade group, a main spring is arranged at one end of a driven part of the main cutter blade group, a driving part which is positioned on the same plane with the auxiliary cutter blade group is arranged on the main cutter blade group, the driving part is arranged on the driving part of the main cutter blade group through a screw rod, and the driving part is abutted to the matching surface of the auxiliary cutter blade group. The invention has the functions of one knife and two knife blade groups which are mutually propped against each other, and has the advantages of stable structure and the like.

Description

Adjustable fine boring cutter for numerical control lathe

Technical Field

The invention belongs to the technical field of tools for machine tools, and particularly relates to an adjustable fine boring tool for a numerical control lathe.

Background

Currently, the fine boring cutters for machine tools mostly have fine tuning structures, and boring diameters are adjusted through the fine tuning structures.

In the prior art, for example, chinese patent publication No. CN105171015B discloses an adjustable fine boring cutter, which comprises a blade, a blade clamp and a cutter body, wherein the blade is connected with the blade clamp, and the blade clamp is connected with the cutter body; the device also comprises a rotating shaft, an elastomer, an adjusting bolt and a fixing structure; the blade clamp is rotatably connected with the blade body through a rotating shaft, and the parts of the blade clamp positioned at the two sides of the rotating shaft are a driving part and a driven part respectively; the adjusting bolt is in threaded connection with the cutter body, and the driving part can be pushed to rotate forward by rotating and axially moving the adjusting bolt; the elastic body is arranged between the cutter body and the driven part; the fixing structure can fix the blade clamp on the blade body, or the fixing structure can apply the force for reversely rotating the driven part to enable the driving part to be closely attached to the adjusting bolt. The adjusting mode is as follows: the fixing structure is loosened firstly, the fixing structure is not required to be operated in the adjusting process, the elastic force of the elastic body ensures that the blade clamp is always attached to the adjusting bolt, the adjusting bolt is only required to be rotated in the adjusting process, and the fixing structure is fastened after the adjustment is completed. The invention provides an adjustable fine boring tool with different structures.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an adjustable fine boring cutter for a numerical control lathe, which is provided with double blades and blade clamps, has the function of double use of one cutter, and is stable in structure, and two blade groups are mutually abutted.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a finish boring cutter with adjustable numerical control lathe is with, includes blade holder, blade group, and fixed knot constructs and adjusting bolt, and the blade group includes blade and blade holder, and the blade inserts the blade holder, the blade group includes main blade group and vice blade group, and main blade group and vice blade group are installed respectively on two terminal surfaces that the blade holder is on the back, and two terminal surfaces that the blade holder is on the back are the front and back, are equipped with on the front, the back and can supply the main blade group of each, vice blade group rotation required front cavity, back cavity, are equipped with the main pivot that runs through main blade group on the blade holder, and main pivot will be equipped with the vice pivot that runs through vice blade group on the blade holder, and vice blade group becomes vice blade group driving part and vice blade group driven part, main blade group is equipped with the drive part towards vice blade group, vice blade group's the vice spring group is located the both sides of vice blade group driven part or vice blade group's both sides of vice blade group driven part, and is located the main pivot that the main pivot is located the main pivot of vice blade group and is located the main pivot of adjusting bolt one side of adjusting bolt, and is located the main pivot and is pressed one side of the free end of adjusting bolt, and is located the main pivot and side of vice blade group and the free end of adjusting bolt.

In the structure, the main blade group and the auxiliary blade group can adopt different blades, one blade body is provided with two blades, the main blade group and the auxiliary blade group are mutually propped against each other, the structure is stable, and when the angle of the blades is regulated through the regulating bolt, the relationship of the same-direction movement or back-to-back movement between the two blade groups can be realized through the auxiliary spring of the auxiliary blade group and different positions of the matching surface.

Further, a screw hole is further formed in the transverse shaft body, a screw rod is matched in the screw hole, two ends of the screw rod extend out of two sides of the tool apron respectively to form an operation end, a through hole for the screw rod to rotate is formed in the tool apron, and a linear lifting motion matched along the front-to-back or back-to-front direction is formed between the screw rod and the screw hole of the transverse shaft body.

In the structure, the operation end of the screw rod is exposed out of the tool apron, and the transverse shaft body can be made to do lifting movement by rotating the operation end, so that the two blade groups can be conveniently installed and fixed.

Further, the matching surface is located on the side surface of the auxiliary blade set facing the main blade set, the matching surface is an inclined surface formed by cutting off triangular blocks from the driven part of the auxiliary blade set to the driving part of the auxiliary blade set, a screw is arranged on the mounting surface of the driving part, and the free end of the screw penetrates through the main blade set and is locked by a nut.

In the structure, the driving part can be abutted against one end of the driving part of the auxiliary blade set on the matching surface or one end of the driven part of the auxiliary blade set on the matching surface through rotation of the screw rod, so that when the main blade set is pushed to rotate by the adjusting bolt, the main blade set and the auxiliary blade set are adjusted in a same-direction movement or opposite-direction movement matching manner.

Further, the driving surface of the driving part is of an arc surface structure, and the matching surface is a positive section formed by vertically cutting off triangular blocks from the driven part of the auxiliary blade set to the driving part of the auxiliary blade set.

In the above structure, the abutting contact between the arc surface and the positive section is more stable, so that the driving part can smoothly transition from the driving part facing the auxiliary blade set to the auxiliary blade set (or reverse) driven part, and if the driving part is of an inclined section structure, the driving surface of the driving part also needs to be designed into a corresponding inclined section structure.

The invention is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a front view (front) of a structure of an embodiment of the present invention;

FIG. 2 is a rear view (back) of the structure of an embodiment of the present invention;

FIG. 3 is a schematic view of an assembled structure between a primary blade set and a secondary blade set (showing two mounting angle structures of a driving portion) according to an embodiment of the present invention;

tool holder 1, front cavity 11, back cavity 12, main insert set 2, main insert set driving portion 21, main insert set driven portion 22, sub insert set 3, sub insert set driving portion 31, sub insert set driven portion 32, main rotation shaft 41, sub rotation shaft 42, main spring 51, sub spring 52, fixing structure 6, lateral shaft body 61, screw hole, screw rod 63, operation end 631, enlarged portion 62, driving portion 7, driving surface 71, mating surface 8, screw rod 72, nut 73, adjusting bolt 9, free end 91.

Detailed Description

The embodiment of the invention is shown in fig. 1-3, and is an adjustable fine boring tool for a numerically controlled lathe, which comprises a tool holder 1, wherein a main blade set 2 and a secondary blade set 3 are respectively arranged on two opposite end surfaces of the tool holder 1, in this embodiment, the main blade set 2 and the secondary blade set 3 are arranged on the front surface and the back surface of the tool holder 1, and in addition, the left side and the right side of the tool holder 1 can be simultaneously arranged. The front and back surfaces are provided with a front concave cavity 11 and a back concave cavity 12 which are required by the rotation of the main blade set 2 and the auxiliary blade set 3 respectively. Specifically, the main blade set 2 and the auxiliary blade set 3 comprise blades and blade clamps, the blades are inserted into the blade clamps and then are arranged in the front concave cavity 11 and the back concave cavity 12 which are respectively corresponding to the blades, and the mounting ends of the main blade set 2 and the auxiliary blade set 3 extend into the inner cavity of the tool apron 1.

The front pocket 11 of the insert holder 1 is provided with a main rotation axis 41 extending through the main blade set 2, i.e. the main rotation axis 41 extends through the blade holder and the blades of the main blade set 2 such that the main blade set 2 is rotatable about the main rotation axis 41. The main rotating shaft 41 divides the main blade set 2 into a main blade set driving part 21 and a main blade set driven part 22, the back cavity 12 of the tool holder 1 is provided with a secondary rotating shaft 42 penetrating the secondary blade set 3, the secondary rotating shaft 42 divides the secondary blade set 3 into a secondary blade set driving part 31 and a secondary blade set driven part 32, the main blade set 2 is provided with a driving part 7 facing the secondary blade set 3, the secondary blade set 3 is provided with a matching surface 8 abutting against the driving part 7, and the matching surface 8 and a secondary spring 52 of the secondary blade set 3 are respectively arranged on two sides of the driven part of the secondary blade set 3 or on two sides of the driving part 31 of the secondary blade set. The present invention can realize the relationship of the same-direction movement or the opposite-direction movement between the two blade sets by the different positions of the auxiliary spring 52 and the matching surface 8 of the auxiliary blade set 3, in this embodiment, the auxiliary spring 52 is disposed at one side (the side far from the main blade set 2) of the auxiliary blade set driving portion 31, and the matching surface 8 is correspondingly the other side (the side facing the main blade set 2) of the auxiliary blade set driving portion 31.

Preferably, in order to match the transition of the abutment angle of the driving part 7, the mating surface 8 in this embodiment extends to the driven part of the secondary blade set 3, specifically, the mating surface 8 is an inclined surface formed by cutting off a triangular block from the driven part of the secondary blade set 3 to the position of the driving part 31 of the secondary blade set (beyond the position where the main rotating shaft 41 is located), the mounting surface of the driving part 7 is provided with a screw 72 perpendicular to the mounting surface, and the free end of the screw 72 is locked by a nut 73 after passing through the main blade set 2. The driving part 7 rotates through the screw 72 to enable the driving part 7 to be abutted against one end of the driving part 31 of the auxiliary blade set on the matching surface 8 or one end of the driven part of the auxiliary blade set 3 on the matching surface 8, so that when the adjusting bolt 9 pushes the main blade set 2 to rotate, the adjustment of the matching of the same-direction movement or the opposite-direction movement between the main blade set 2 and the auxiliary blade set 3 is realized.

The driving surface 71 of the driving part 7 has an arc surface structure, and the mating surface 8 has a normal cross section formed by vertically cutting off a triangular block from the driven part of the secondary blade set 3 to the driving part 31 of the secondary blade set. The abutting contact between the arc surface and the positive section is smoother, so that the driving part 7 can smoothly transition from the direction facing the driving part 31 of the auxiliary blade set to the driven part of the auxiliary blade set 3 (or the reverse direction), and if the driving part is of an inclined section structure, the driving surface 71 of the driving part 7 also needs to be designed into a corresponding inclined section structure.

The main spring 51 of the main blade set 2 is located outside the driven portion 22 of the main blade set (on the side far from the auxiliary blade set 3), the adjusting bolt 9 is mounted in the tool holder 1 and forms threaded fit with the tool holder 1, and the free end 91 of the adjusting bolt 9 passes through a screw hole on the tool holder 1 and then abuts against the outside of the driving portion 21 of the main blade set (on the side far from the auxiliary blade set 3).

The two blade sets are distributed in a staggered herringbone manner, the cutter holder 1 is further provided with a fixing structure 6, the tail part of the fixing structure 6 is extruded on the main blade set 2 so that the main blade set 2 is clung to the bottom surface of the front concave cavity 11, and the head part of the fixing structure 6 is extruded on the auxiliary blade set 3 so that the auxiliary blade set 3 is clung to the bottom surface of the back concave cavity 12.

Specifically, the fixing structure 6 includes a cross shaft body 61, one end of the cross shaft body 61 is pressed against the blade holder of the main blade group 2, and the other end of the cross shaft body 61 is pressed against the blade holder of the sub blade group 3 through an enlarged portion 62. The cross shaft body 61 is also provided with a screw hole, the screw hole is internally matched with a screw rod 63, two ends of the screw rod 63 respectively extend out of two sides of the tool apron 1 to form an operation end 631, the tool apron 1 is provided with a through hole for the screw rod 63 to rotate, and a linear lifting motion matched with the cross shaft body 61 along the front to back or back to front direction is formed between the screw rod 63 and the screw hole of the cross shaft body 61. The operating end 631 of the screw 63 is exposed outside the tool holder 1, and the transverse shaft 61 can be lifted and lowered by rotating the operating end 631, so that the two blade sets can be installed and fixed conveniently.

According to the invention, the main blade set 2 and the auxiliary blade set 3 can adopt different blades, one blade body and two blades, the main blade set 2 and the auxiliary blade set 3 are mutually propped against each other, the structure is stable, and when the angle of the blades is regulated by the regulating bolt 9, the same-direction movement or back-to-back movement between the two blade sets can be realized.

The present invention is not limited to the above-described embodiments, and those skilled in the art, based on the disclosure of the present invention, may implement the present invention in various other embodiments, or simply change or modify the design structure and thought of the present invention, which fall within the protection scope of the present invention.

Claims

1. The utility model provides a fine boring cutter with adjustable numerical control lathe, includes blade holder, blade group, and fixed knot constructs and adjusting bolt, and the blade group includes blade and blade clamp, and blade inserts blade clamp, its characterized in that: the blade group comprises a main blade group and an auxiliary blade group, the main blade group and the auxiliary blade group are respectively arranged on two end faces of the blade holder, which are opposite to each other, the two end faces of the blade holder are marked as a front face and a back face, the front face and the back face are provided with a front concave cavity and a back face concave cavity which are required by the rotation of the main blade group and the auxiliary blade group, the blade holder is provided with a main rotating shaft penetrating the main blade group, the main rotating shaft divides the main blade group into a main blade group driving part and a main blade group driven part, the blade holder is provided with an auxiliary rotating shaft penetrating the auxiliary blade group, the auxiliary rotating shaft divides the auxiliary blade group into an auxiliary blade group driving part and an auxiliary blade group driven part, the main blade group is provided with a driving part facing the auxiliary blade group, the auxiliary blade group is provided with a matching surface which is abutted with the driving part, the matching surface and the auxiliary spring of the auxiliary blade group are respectively arranged on two sides of the driven part of the auxiliary blade group or on two sides of the driving part of the auxiliary blade group, the main spring of the main blade group is positioned on one side of the driven part of the main blade group, the adjusting bolt is arranged in the tool apron and is in threaded fit with the tool apron, the free end of the adjusting bolt is abutted on one side of the driving part of the main blade group, the fixing structure comprises a transverse shaft body, one end of the transverse shaft body is extruded on the blade clamp of the main blade group, and the other end of the transverse shaft body is extruded on the blade clamp of the auxiliary blade group through the expansion part.

2. The adjustable fine boring tool for a numerically controlled lathe according to claim 1, wherein: the screw rod is matched with the transverse shaft body, two ends of the screw rod extend out of two sides of the tool apron respectively to form an operation end, a through hole for the screw rod to rotate is formed in the tool apron, and the screw rod and the screw hole of the transverse shaft body form a linear lifting motion matched with the transverse shaft body along the front-to-back or back-to-front direction.

3. The adjustable fine boring tool for a numerically controlled lathe according to claim 1 or 2, wherein: the matching surface is positioned on the side surface of the auxiliary blade set facing the main blade set, the matching surface is an inclined surface formed by cutting off triangular blocks from the driven part of the auxiliary blade set to the driving part of the auxiliary blade set, the installation surface of drive part is equipped with the screw rod, and the free end of screw rod passes main blade group back through the nut locking.

4. The adjustable fine boring tool for a numerically controlled lathe according to claim 3, wherein: the driving surface of the driving part is of an arc surface structure, and the matching surface is a positive section formed by vertically cutting off triangular blocks from the driven part of the auxiliary blade set to the driving part of the auxiliary blade set.