CN218744912U

CN218744912U - multi-stage cutting tool

Info

Publication number: CN218744912U
Application number: CN202223201158.4U
Authority: CN
Inventors: 胡健; 杜月琴; 王勇
Original assignee: Suzhou Fengrui Precision Electromechanical Co ltd
Current assignee: Suzhou Fengrui Precision Electromechanical Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-28
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a multistage cutting tool, which comprises a cutter bar, wherein a first blade is arranged at the front end of the cutter bar, at least one second blade is arranged on the side wall of the bar body of the cutter bar, the cutting edges of the first blade and the second blade respectively protrude out of the side wall of the bar body of the cutter bar, and the cutter bar drives the first blade and the second blade to cut a hole groove through rotation; the circumference equipartition has a set of first support regulating block on the pole body lateral wall of cutter arbor, first support regulating block set up in between first blade and the second blade, the outer wall evagination of first support regulating block in the pole body lateral wall of cutter arbor, just the circumscribed circle diameter of the outer wall of first support regulating block with the cutting face internal diameter phase-match of first blade makes during the cutting of first blade, first support regulating block with the inner wall slip butt of the hole groove that first blade was cut out. The utility model discloses a shake when reducing the cutter arbor cutting guarantees cutting accuracy and quality.

Description

Multi-stage cutting tool

Technical Field

The utility model relates to a cutting tool technical field specifically relates to a multistage cutting tool.

Background

As disclosed in publication No. CN 216398318U, most cutting tools are provided with a blade on the top or side of a tool bar, and holes or slots are cut by rotating the tool bar. In some deep-depth hole groove cutting processes or in some multi-step hole groove cutting processes, in order to improve the cutting efficiency of the multi-step hole groove, a plurality of blades are provided on the side of the cutter bar to perform multi-step cutting. The cutting edge of the insert needs to protrude from the shank for cutting, which makes the diameter of the hole groove after cutting larger than the diameter of the shank, and there is a gap between the shank and the hole groove after cutting. In the process of cutting the hole groove, a large cutting force is often needed, so that when the cutter bar is deeply cut, the cutter bar is easy to shake, the hole diameter of the hole groove is deviated, geometric tolerance is generated, or the inner wall of the hole groove is not smooth. Further, the cutter bar sways, so that the stress of the blade is uneven, uneven abrasion is generated, and the machining precision of the hole groove is further reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a multistage cutting tool.

The purpose of the utility model is realized through the following technical scheme:

the multistage cutting tool comprises a tool bar, wherein a first blade is arranged at the front end of the tool bar, at least one second blade is arranged on the side wall of the bar body of the tool bar, the cutting edges of the first blade and the second blade respectively protrude out of the side wall of the bar body of the tool bar, and the tool bar drives the first blade and the second blade to cut a hole groove through rotation; the circumference equipartition has a set of first support regulating block on the pole body lateral wall of cutter arbor, first support regulating block set up in between first blade and the second blade, the outer wall evagination of first support regulating block in the pole body lateral wall of cutter arbor, just the circumscribed circle diameter of the outer wall of first support regulating block with the cutting face internal diameter phase-match of first blade makes during the cutting of first blade, first support regulating block with the inner wall slip butt of the hole groove that first blade was cut out.

Preferably, the front end of the cutter bar is provided with two first blades, and the two first blades are distributed in a central symmetry manner.

Preferably, be provided with on the pole body lateral wall of cutter arbor with first support regulating block assorted recess, wear to be equipped with two first screws in the first support regulating block, two the cover is equipped with the spring on the first screw, the both ends of spring respectively with the tank bottom butt of first support regulating block, recess makes the outer wall of first support regulating block with the inner wall elasticity butt of hole groove.

Preferably, the diameter of the cutting face formed by the second blade is larger than the diameter of the cutting face formed by the first blade.

Preferably, the circumference equipartition has a set of second to support the regulating block on the pole body lateral wall of cutter arbor, the second supports the regulating block and is located the second blade with between the tail end of cutter arbor, the second supports the regulating block and inlays through the second screw and locates in the cutter arbor, just the second supports the outer wall of regulating block evaginate in the pole body lateral wall of cutter arbor, the second support the circumscribed circle diameter of the outer wall of regulating block with the cutting face internal diameter phase-match of second blade makes during the cutting of second blade, the second support the regulating block with the inner wall slip butt of the hole groove that the second blade cut out.

Preferably, the surfaces of the first support adjusting block and the second support adjusting block are coated with lubricating layers

Preferably, a knife clip is embedded in the side wall of the rod body of the knife bar, and the second blade is fixedly arranged at the front end of the knife clip.

Preferably, a containing groove for containing the knife clip is formed in the side wall of the rod body of the cutter bar, and the length of the containing groove is larger than that of the knife clip so as to adjust the position of the knife clip.

The beneficial effects of the utility model are mainly embodied in that:

1. the first supporting and adjusting block and the second supporting and adjusting block are arranged to be in sliding abutting contact with the inner walls of the hole grooves cut by the first blade and the second blade so as to play a role of stably supporting the cutter bar, so that the cutter bar is reduced in shaking as much as possible in the cutting process, the geometric accuracy and the dimensional accuracy of the cutting surfaces of the first blade and the second blade and the integrity and smoothness of the inner walls of the hole grooves are further ensured, and the first blade and the second blade are ensured to be uniformly stressed during cutting so as to be difficult to damage and break, thereby further ensuring the surface quality of the cut hole grooves;

2. the combination of the first blade and the second blade can finish the required hole slot in one time, thus avoiding multiple times of cutting and finishing one time of cutting, improving the processing efficiency and saving the processing time;

3. the first supporting and adjusting block is provided with a spring to enable the first supporting and adjusting block to have elasticity to be elastically abutted against the inner wall of the hole groove cut by the first blade, so that the first blade can be used for quickly cutting a pre-hole conveniently, the second blade can be used for quickly cutting conveniently, and the machining efficiency of the whole hole groove is improved.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the explosion schematic diagram of the embodiment of the utility model;

FIG. 2 is a schematic diagram: the utility model discloses a schematic diagram of the use state;

FIG. 3: schematic diagram of an embodiment of the present invention;

FIG. 4: the utility model discloses another direction's of embodiment schematic diagram.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

As shown in fig. 1 to 4, the present invention discloses a multistage cutting tool, which comprises a tool bar 1, wherein a first blade 2 is disposed at the front end of the tool bar 1, at least one second blade 3 is disposed on the side wall of the bar body of the tool bar 1, the cutting edges of the first blade 2 and the second blade 3 respectively protrude out of the side wall of the bar body of the tool bar 1, and the tool bar 1 rotates to drive the first blade 2 and the second blade 3 to cut a hole groove; the circumference equipartition has a set of first support regulating block 4 on the pole body lateral wall of cutter arbor 1, first support regulating block 4 set up in between first blade 2 and the second blade 3, the outer wall evagination of first support regulating block 4 in the pole body lateral wall of cutter arbor 1, just the circumscribed circle diameter of the outer wall of first support regulating block 4 with the cutting face internal diameter phase-match of first blade 2 makes during the cutting of first blade 2, first support regulating block 4 with the inner wall slip butt of the hole groove that first blade 2 cut out.

As shown in fig. 1, two first blades 2 are arranged at the front end of the tool bar 1, and the two first blades 2 are distributed in a central symmetry manner. The two first blades 2 can improve the processing efficiency and stability of the front end of the cutter bar 1. In practical use, a turning tool is firstly used for rough machining in advance, namely, a pre-hole which is equivalent to the rotating diameter of the first blade 5 and has a certain depth is firstly turned by the turning tool, and then the first blade 2 is used for extending into the pre-hole for further fine machining.

First blade 2 stretches into the pre-hole and cuts, along with first blade 2's removal, first support regulating block 4 gets into the pre-hole and with the inner wall slip butt in pre-hole, first support regulating block 4 fills cutter arbor 1 with clearance between the pre-hole is right cutter arbor 1 plays the effect of stabilizing the support, thereby reduces cutter arbor 1's shake. The first support adjusting block 4 may be a fixed structure to stably support the knife bar 1. However, the pre-hole is not a final required machining hole groove, so the machining precision requirement of the inner wall of the pre-hole is low, the first blade 2 is mainly used for deep machining of the pre-hole, so the precision requirement of the inner wall of the hole groove cut by the first blade 2 is low, and in order to improve the cutting efficiency of the first blade 2, the first support adjusting block 4 is preferably a floating structure with elasticity.

As shown in fig. 1, a groove 101 matched with the first supporting and adjusting block 4 is arranged on the side wall of the shaft of the cutter bar 1, two first screws 6 are arranged in the first supporting and adjusting block 4 in a penetrating manner, two springs 7 are sleeved on the first screws 6, two ends of each spring 7 are respectively abutted against the bottoms of the first supporting and adjusting block 4 and the groove 101, so that the outer wall of the first supporting and adjusting block 4 is elastically abutted against the inner wall of the hole groove. Specifically, the first screw 6 is in threaded connection with the groove 101, and the first support adjusting block 4 is sleeved on the first screw 6 and can float relative to the groove 101 under the elastic support of the spring 7. In the preferred embodiment, three sets of the first support adjusting blocks 4 are arranged on the side wall of the shaft of the cutter bar 1 to stably support the cutter bar 1.

As further shown in fig. 2, the diameter of the cutting surface formed by the second blade 3 is larger than the diameter of the cutting surface formed by the first blade 2. In a preferred embodiment, the diameter of the cutting face formed by the second insert 3 is slightly larger than the diameter of the cutting face formed by the first insert 2, so that after machining of the first insert 2, further finishing is performed using the second insert 3. The arrangement can finish the required hole groove by the combined use of the first blade 2 and the second blade 3 in one step, thereby avoiding multiple times of cutting, finishing one time of cutting, improving the processing efficiency and saving the processing time.

In order to guarantee the cutting precision of second blade 3, the circumference equipartition has a set of second to support regulating block 5 on the pole body lateral wall of cutter arbor 1, the second supports regulating block 5 and is located second blade 3 with between the tail end of cutter arbor 1, the second supports regulating block 5 and inlays through second screw 8 and locates in the cutter arbor 1, just the second supports the outer wall of regulating block 5 evaginate in the pole body lateral wall of cutter arbor 1, the second support the circumscribed circle diameter of the outer wall of regulating block 5 with the cutting face internal diameter phase-match of second blade 3 makes during the cutting of second blade 3, the second support regulating block 5 with the inner wall slip butt of the hole groove that second blade 3 cut out. The second support adjusting block 5 is fixedly connected with the cutter bar 1, the second blade 3 enters a pre-hole to carry out deep finish machining along with further deep cutting machining of the cutter bar 1, and the fixed structure of the second support adjusting block 5 can further reduce the shaking of the cutter bar 1 when the fixed structure is in sliding butt joint with the inner wall of a hole groove cut by the second blade 2, so that the rotating stability of the cutter bar 1 is improved, and the geometric accuracy and the dimensional accuracy of the hole groove at the cutting position of the second blade 2 and the surface quality of the inner wall of the hole groove are further ensured.

Preferably, the surfaces of the first support adjusting block 4 and the second support adjusting block 5 are coated with a lubricating layer, and the lubricating layer can be made of teflon material, so that the lubricating layer has a lubricating effect and has the characteristics of high temperature resistance, acid resistance and alkali resistance, so as to ensure that the first support adjusting block 4 and the second support adjusting block 5 cannot be worn to cause wear to the inner wall of the slot when in sliding contact with the inner wall of the slot, reduce the influence on the cutting efficiency of the first blade 2 and the second blade 3, and prolong the service life of the first support adjusting block 4 and the second support adjusting block 5.

The first supporting and adjusting block 4 and the second supporting and adjusting block 5 are connected with the cutter bar 1 through a first screw 6 and a second screw 8, so that the first supporting and adjusting block 4 and the second supporting and adjusting block 5 can be replaced in time conveniently. The outer walls of the first supporting and adjusting block 4 and the second supporting and adjusting block 5 can be arc surfaces matched with the inner walls of the hole grooves cut by the first blade 2 and the second blade 3.

A knife clip 9 is embedded in the side wall of the rod body of the cutter bar 1, and the second blade 3 is fixedly arranged at the front end of the knife clip 9. Further, a containing groove 102 for containing the knife clip 9 is formed in a side wall of the shaft of the cutter bar 1, and the length of the containing groove 102 is greater than that of the knife clip 9, so as to adjust the position of the knife clip 9. The position of the knife clip 9 can be adjusted according to requirements to further improve the cutting precision of the second blade 2.

The utility model discloses set up first support regulating block 4 and second support regulating block 5 come with the hole inslot wall slip butt that first blade 2, second blade 3 cut out, come to play the effect of outrigger to cutter arbor 1 for cutter arbor 1 reduces the shake as far as possible in the cutting process, and then guarantees the geometric accuracy and the size precision of the cutting face of first blade 2, second blade 3 to and the integrality and the smoothness of hole inslot wall, guarantee simultaneously atress is even when first blade 2 and second blade 3 cut, makes its not fragile fracture, further guarantees the surface quality in the hole groove of cutting.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of detailed descriptions is only for the specific description of the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention should be included within the scope of the present invention.

Claims

1. Multistage cutting tool, its characterized in that: the cutter bar comprises a cutter bar (1), wherein a first blade (2) is arranged at the front end of the cutter bar (1), at least one second blade (3) is arranged on the side wall of the bar body of the cutter bar (1), cutting edges of the first blade (2) and the second blade (3) respectively protrude out of the side wall of the bar body of the cutter bar (1), and the cutter bar (1) drives the first blade (2) and the second blade (3) to cut a hole groove through rotation; the utility model discloses a cutter arbor, including cutter arbor (1), first support regulating block (4) are gone up to the circumference equipartition on the pole body lateral wall of cutter arbor (1), first support regulating block (4) set up in between first blade (2) and second blade (3), the outer wall evagination of first support regulating block (4) in the pole body lateral wall of cutter arbor (1), just the circumscribed circle diameter of the outer wall of first support regulating block (4) with the cutting face internal diameter phase-match of first blade (2), make during the cutting of first blade (2), first support regulating block (4) with the inner wall slip butt of the hole groove that first blade (2) cut out.

2. The multi-stage cutting tool of claim 1, wherein: the front end of the cutter bar (1) is provided with two first blades (2), and the two first blades (2) are distributed in a central symmetry mode.

3. The multi-stage cutting tool of claim 2, wherein: be provided with on the pole body lateral wall of cutter arbor (1) with first support regulating block (4) assorted recess (101), wear to be equipped with two first screws (6), two in first support regulating block (4) the cover is equipped with spring (7) on first screw (6), the both ends of spring (7) respectively with the tank bottom butt of first support regulating block (4), recess (101), make the outer wall of first support regulating block (4) with the inner wall elasticity butt in hole groove.

4. The multi-stage cutting tool of claim 1, wherein: the diameter of the cutting surface formed by the second blade (3) is larger than that of the cutting surface formed by the first blade (2).

5. The multi-stage cutting tool of claim 4, wherein: the circumference equipartition has a set of second to support regulating block (5) on the pole body lateral wall of cutter arbor (1), the second supports regulating block (5) and is located second blade (3) with between the tail end of cutter arbor (1), the second supports regulating block (5) and inlays through second screw (8) and locates in cutter arbor (1), just the second support the outer wall of regulating block (5) evaginate in the pole body lateral wall of cutter arbor (1), the second support the circumscribed circle diameter of the outer wall of regulating block (5) with the cutting face internal diameter phase-match of second blade (3), make when second blade (3) cut, the second support regulating block (5) with the inner wall slip butt of the hole groove that second blade (3) cut out.

6. The multi-stage cutting tool of claim 5, wherein: the surfaces of the first supporting and adjusting block (4) and the second supporting and adjusting block (5) are coated with lubricating layers.

7. The multi-stage cutting tool of claim 1, wherein: a cutter clamp (9) is embedded in the side wall of the rod body of the cutter rod (1), and the second blade (3) is fixedly arranged at the front end of the cutter clamp (9).

8. The multi-stage cutting tool of claim 7, wherein: a containing groove (102) used for containing the cutter clamp (9) is formed in the side wall of the rod body of the cutter rod (1), and the length of the containing groove (102) is larger than that of the cutter clamp (9) so as to adjust the position of the cutter clamp (9).