CN113857509A

CN113857509A - Boring, scraping and rolling compound cutter

Info

Publication number: CN113857509A
Application number: CN202111235540.4A
Authority: CN
Inventors: 蒲天娃
Original assignee: Xi'an Xinwang Mining Equipment Co ltd
Current assignee: Xi'an Xinwang Mining Equipment Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2021-12-31

Abstract

The application discloses a boring, scraping and rolling compound cutter which comprises a shell, a driving component, a moving component, a first cutter component and a second cutter component; the driving assembly and the moving assembly are arranged in the shell, the driving assembly is fixedly connected with an inner cavity of the shell, and the output end of the driving assembly is connected with the moving assembly; the moving assembly is connected with the inner wall of the shell in a sliding mode, the moving assembly is connected with the first cutter assembly in a sliding mode, and the moving assembly is connected with the second cutter assembly in a contact mode; the first cutter assembly obliquely penetrates through the cutting feed end of the shell and is in sliding connection with the cutting feed end of the shell; the second cutter assembly is arranged on the periphery of the shell in a penetrating mode and is in sliding connection with the shell, and a resetting piece is arranged between the second cutter assembly and the shell. The boring scraping rolling compound cutter simplifies the structure inside the boring scraping rolling compound cutter, meets the aims of expanding and retracting the boring cutter, the scraper and the hob synchronously at one time, and achieves the effect of boring scraping rolling operation on a blind hole at one time.

Description

Boring, scraping and rolling compound cutter

Technical Field

The application relates to the technical field of machining equipment, in particular to a boring, scraping and rolling compound cutter.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion, and is the most main part of engineering machinery, the loss of the hydraulic cylinder in the existing coal mine production is large, the inner surface of the hydraulic cylinder needs to be polished and trimmed again after the roughness of the inner surface of the hydraulic cylinder after long-term use does not meet the requirement, a boring scraping roller is a common deep hole machining mode and a machining mode of the inner surface of the hydraulic cylinder, rough boring is a first working procedure of machining, and machining allowance of the inner surface is removed through rotary scraping and boring of a boring cutter; fine boring is a second working procedure of processing, and a good foundation is provided for rolling through scraping and correcting in the roughly bored hole, namely a scraping process; rolling is a third process, the inner surface is extruded through a roller with high hardness on a rolling head, so that tiny plastic deformation is generated, the surface roughness is reduced, and the surface hardness is improved. Rolling is a non-cutting plastic working method.

The existing boring head is of a solid structure, and holes are generally processed by boring, scraping and rolling respectively. The boring tool equipment has the disadvantages of low integration level, complex process, one boring tool corresponding to one processing process, high standard control technology difficulty, low processing precision and high production cost; in addition, in the prior art, the grinding process is directly carried out on the inner surface of the hydraulic cylinder, then the rolling process is carried out, however, one meter of the grinding cylinder is about one to two days, one meter of the rolling cylinder is about ten to thirty minutes, the difference of the production cycle is obvious, after rolling, the surface roughness of the hole is reduced from Ra3.2-6.3 mu m before rolling to Ra0.4-0.8 mu m, the surface hardness of the hole is improved by about thirty percent, the fatigue strength of the inner surface of the cylinder barrel is improved by twenty-five percent, if only the influence of the cylinder barrel is considered, the service life of the oil cylinder is improved by two to three times, and in conclusion, the boring, scraping and rolling process is improved by about three times compared with the efficiency of the grinding process.

The front end of a boring and rolling head cutter in the prior art is a boring device, most of which can be provided with 2-8 indexable blades and are selected according to different diameters of workpieces and processing requirements; the rear part is provided with a rolling cutter with 4-50 rollers and a corresponding polyurethane shockproof pad; 2 kinds of water can be discharged and can not be discharged from the center of the cutter; in actual machining (provided that it is used on the respective machine tool): one is that the boring and the mirror surface rolling are fed once to finish the processing; the other is boring, when the boring hob is withdrawn, the boring cutter is jogged towards the center to avoid 2 times of contact with the processing surface, the roller of the rolling cutter expands outwards, the rolling workpiece obtains a mirror surface, the cutter for boring, scraping and rolling the blind hole is gradually developed in the prior art, and after the hob operation is finished, the hob possibly causes secondary damage to the inner surface of the grinded cylinder body when the hob is withdrawn, so that the hob in the prior art has the functions of expanding and retracting, when the cutter is withdrawn, the retraction of the hob is controlled to avoid the secondary damage to the inner surface of the cylinder body, but the expansion and retraction of the hob, the boring cutter and the scraper in the prior art are realized through respective independent expansion and retraction mechanisms, and the expansion and retraction of the hob, the boring cutter and the scraper cannot be synchronously realized, so that the structure inside the boring, scraping and rolling integrated cutter in the prior art is complex.

Disclosure of Invention

The boring scraping and rolling compound tool solves the problems that in the prior art, boring scraping and rolling operations cannot be carried out on blind holes at one time, expansion and retraction of a boring cutter, a scraper and a hob cannot be achieved synchronously, the structure inside the boring scraping and rolling compound tool is simplified, and the purpose of synchronous expansion and retraction of the boring cutter, the scraper and the hob at one time is achieved.

The boring, scraping and rolling compound cutter comprises a shell, a driving component, a moving component, a first cutter component, a second cutter component and a resetting component; the driving assembly and the moving assembly are arranged in the shell, the driving assembly is fixedly connected with the inner wall of the shell, the moving assembly is connected with the inner wall of the shell in a sliding manner, and the output end of the driving assembly is connected with the moving assembly so as to drive the moving assembly to move along the axial direction of the shell; the first cutter assembly penetrates through the cutter feeding end of the shell in an inclined mode, is connected with the moving assembly and can stretch out and retract in an inclined mode under the driving of the moving assembly; the second cutter assembly is arranged on the periphery of the shell in a penetrating mode, is connected with the moving assembly and can be driven by the moving assembly to expand along the radial direction of the shell; the reset piece is arranged between the second cutter assembly and the shell and used for driving the second cutter assembly to reset.

In one possible implementation, the driving assembly comprises a rotary hydraulic cylinder, a rotary disc and a screw rod; the cylinder body of the rotary hydraulic cylinder is fixedly connected to the inner wall of the shell, and the output end of the rotary hydraulic cylinder is fixedly connected with the rotating disc; the screw rod penetrates through the moving assembly and is in threaded connection with the moving assembly, one end of the screw rod is fixedly connected with the end face, deviating from the rotary hydraulic cylinder, of the rotating disc, and the other end of the screw rod is rotatably connected with the feed end of the shell.

In one possible implementation, the moving assembly includes a conical block and a wedge block symmetrically disposed about a center line of the conical block; the two wedge-shaped blocks are arranged on the end face, deviating from the hydraulic cylinder, of the conical block, and the inclined surfaces of the wedge-shaped blocks are connected with the first cutter assembly in a sliding mode; the side surface of the conical block is in sliding connection with the inner wall of the shell, and the conical surface of the conical block is in contact connection with the second cutter assembly.

In a possible implementation manner, the conical block is provided with two arc-shaped grooves which penetrate along the direction of the axis of the conical block, and the two arc-shaped grooves are symmetrically arranged around the axis of the conical block; the wire drawing machine is characterized by further comprising two limiting rods symmetrically arranged on two sides of the screw rod, one ends of the two limiting rods are connected with the rotating disc, and the other ends of the two limiting rods respectively extend into the two arc-shaped grooves.

In one possible implementation, the first tool assembly includes a tool shank, a tool holder, a boring tool, and a scraper blade symmetrically disposed about an axis of the housing; the cutter handle obliquely penetrates through the cutter feeding end of the shell and is connected with the cutter feeding end of the shell in a sliding mode; the end part of the knife handle extending out of the shell is fixedly connected with the knife holder, a sliding part is arranged between the end part of the knife handle extending into the shell and the inclined plane of the wedge block, and the end part of the knife holder departing from the knife handle is sequentially detachably connected with the boring cutter and the scraper.

In one possible implementation, the slider includes a T-block and a T-slot; the T-shaped block is fixedly connected to the end part of the knife handle extending into the shell, and the T-shaped groove is formed in the inclined surface of the wedge-shaped block and is connected with the T-shaped block in a sliding mode.

In one possible implementation, the second cutter assembly includes a plurality of roller cutters, a plurality of rolling grooves and a plurality of bumps arranged in an annular array; a plurality of through grooves are formed in the side face annular array of the cutter feeding end of the shell, and the rolling grooves are arranged in the through grooves and are in sliding connection with the side walls of the through grooves; the hob is arranged in the rolling groove and is rotationally connected with the side wall of the rolling groove; the convex block is fixedly connected with the end part of the rolling groove deviating from the hob, and the convex block is in contact connection with the conical surface of the conical block.

In a possible implementation manner, the reset piece comprises springs symmetrically arranged, sliding grooves are symmetrically formed in the side faces of the through grooves, sliding blocks are symmetrically arranged on two sides of the rolling grooves, the sliding blocks and the springs are arranged in the sliding grooves and are in sliding connection with the sliding grooves, and the springs are arranged at one ends of the sliding blocks, which are radially outward.

In a possible implementation manner, the distance from the radially outward side surface of the hob to the shaft center is equal to the distance from the cutter tip of the boring cutter and the distance from the cutter tip of the scraper to the shaft center.

In one possible implementation, an angle α is formed between the inclined surface of the wedge block and the shaft axis, an angle β is formed between the inclined surface of the cone block and the shaft axis, and tan β is sin α cos α.

One or more technical solutions provided in the present application have at least the following technical effects or advantages:

the driving component and the moving component are arranged inside the shell, the moving action of the moving component is realized by controlling the driving component, the moving component is connected with the first cutter component in a sliding way, the moving component is connected with the second cutter component in a contact way, when the moving component moves inside the shell, the first cutter component and the second cutter component are synchronously driven to expand, after the boring scraping and rolling operation is finished, the first cutter component is driven to synchronously retract and reset by the moving component, and simultaneously, the second cutter component is automatically reset by arranging the resetting piece, thereby effectively solving the problem that the blind hole cannot be bored and scraped by one time in the prior art, synchronously realizing the expansion and retraction of the boring cutter, the scraper and the hob, and further realizing the expansion and retraction of the boring cutter, the scraper and the hob under the premise of synchronously realizing the expansion and retraction of the boring cutter, the scraper and the hob by one time, the internal structure of the boring scraping rolling compound cutter is simplified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a boring and scraping compound cutter provided by an embodiment of the application;

FIG. 2 is an enlarged view of a portion of area A of FIG. 1;

FIG. 3 is an isometric view of a cone block and drive assembly provided by an embodiment of the present application;

FIG. 4 is an isometric view of a wedge block, a tool shank, and a slide provided by an embodiment of the present application;

fig. 5 is a corresponding schematic diagram of a boring and scraping composite cutter provided in an embodiment of the present application before processing a blind hole;

fig. 6 is a schematic diagram of a boring cutter and a scraper of the boring and scraping compound cutter entering an avoidance groove according to the embodiment of the application.

Reference numerals: 1-a housing; 11-a through groove; 111-a chute; 12-a sliding groove; 2-a drive assembly; 21-a rotary hydraulic cylinder; 22-a rotating disc; 23-a screw rod; 24-a stop lever; 25-an arc-shaped groove; 3-a moving assembly; 31-a tapered block; 311-a slider; 32-wedge-shaped blocks; 4-a first cutter assembly; 41-a knife handle; 42-a tool apron; 43-a boring cutter; 44-a doctor blade; 5-a second cutter assembly; 51-hob cutter; 52-rolling groove; 521-a slide block; 53-bumps; 6-a reset piece; 61-a spring; 7-a slide; 71-T block; 72-T-shaped slot; 8-avoidance groove; 9-blind hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1, 2 and 4, a boring and scraping compound cutter provided by the embodiment of the application comprises a housing 1, a driving assembly 2, a moving assembly 3, a first cutter assembly 4, a second cutter assembly 5 and a resetting element 6; the driving assembly 2 and the moving assembly 3 are both arranged inside the shell 1, the driving assembly 2 is fixedly connected with the inner wall of the shell 1, the moving assembly 3 is connected with the inner wall of the shell 1 in a sliding manner, and the output end of the driving assembly 2 is connected with the moving assembly 3 so as to drive the moving assembly 2 to move along the axial direction of the shell 1; the first cutter component 4 obliquely penetrates through the cutter feeding end of the shell 1, is connected with the moving component 3 and can be driven by the moving component 3 to stretch obliquely; the second cutter assembly 5 is arranged on the periphery of the shell 1 in a penetrating manner, is connected with the moving assembly 3 and can be driven by the moving assembly 3 to expand along the radial direction of the shell 1; the reset piece 6 is arranged between the second cutter assembly 5 and the shell 1 and used for driving the second cutter assembly 5 to reset, in the embodiment of the application, the driving assembly 2 is controlled to drive the moving assembly 3 to move, further, the expansion function of the first cutter assembly 4 and the second cutter assembly 5 is realized through the moving assembly 3, the first cutter assembly 4 is driven to synchronously retract when the moving assembly 3 retracts through the sliding connection relation between the moving assembly 3 and the first cutter assembly 4, the reset piece 6 is arranged, the second cutter assembly 5 is automatically reset and retracted synchronously after the moving assembly 3 retracts, and finally, the expansion and retraction functions of the first cutter assembly 4 and the second cutter assembly 5 are completed through the driving assembly 2 and the moving assembly 3 at one time.

Referring to fig. 1 and 3, the driving assembly 2 includes a rotary hydraulic cylinder 21, a turn disc 22, and a lead screw 23; the cylinder body of the rotary hydraulic cylinder 21 is fixedly connected to the inner wall of the shell 1, and the output end of the rotary hydraulic cylinder 21 is fixedly connected with the rotating disc 22; the lead screw 23 link up removal subassembly 3, and with 3 threaded connection of removal subassembly, the one end of lead screw 23 and the terminal surface fixed connection that rolling disc 22 deviates from rotary hydraulic cylinder 21, the other end of lead screw 23 and the feed end of shell 1 rotate and be connected, rotary hydraulic cylinder 21 is chooseed for use to drive assembly 2 in the embodiment of this application, it is rotatory through control rotary hydraulic cylinder 21 output, it rotates to drive rolling disc 22, rolling disc 22 and then drive lead screw 23 and rotate, lead screw 23 is along with rolling disc 22 rotation, realize that removal subassembly 3 carries out the action of sliding movement along the shell 1 inner wall.

Referring to fig. 1 and 3, the moving assembly 3 includes a tapered block 31 and a wedge block 32 symmetrically disposed about a center line of the tapered block 31; the two wedge blocks 32 are arranged on the end face, away from the hydraulic cylinder 21, of the conical block 31, and the inclined surfaces of the wedge blocks 32 are connected with the first cutter assembly 4 in a sliding mode; the side of the conical block 31 is connected with the inner wall of the housing 1 in a sliding manner, the conical surface of the conical block 31 is connected with the second cutter assembly 5 in a contact manner, sliding blocks 311 are symmetrically arranged on the side of the conical block 31 in the embodiment of the application, sliding grooves 12 are symmetrically formed in the inner wall of the housing 1, the sliding blocks 311 slide back and forth in the sliding grooves 12 to realize sliding movement of the conical block 31 on the inner wall of the housing 1, when the conical block 31 moves towards the feed end of the housing 1, the second cutter assembly 5 is pushed through the conical surface of the conical block 31, meanwhile, the first cutter assembly 4 is pushed through the inclined surface of the wedge 32, and synchronous action of the first cutter assembly 4 and the second cutter assembly 5 is realized.

Referring to fig. 3, the conical block 31 is provided with two arc-shaped slots 25 penetrating along the self axis direction, and the two arc-shaped slots 25 are symmetrically arranged about the self axis; this application embodiment still sets up in two gag lever posts 24 of lead screw 23 both sides including the symmetry, the one end and the rolling disc 22 of two gag lever posts 24 are connected, two arc walls 25 are stretched into respectively to two gag lever posts 24's the other end, rotate through rolling disc 22 in this application embodiment and drive gag lever post 24 and can only remove in the within range of arc wall 25, and then realize spacing to rolling disc 22 turned angle through gag lever post 24 and arc wall 25 realization, it is too big to avoid the too big toper piece 31 displacement distance that leads to of actual turned angle, cause first cutter unit 4, the transition of second cutter unit 5 advances the sword, cause the harm to the work piece and to the inside harm of cutter.

Referring to fig. 1, the first tool assembly 4 includes a shank 41, a holder 42, a boring cutter 43, and a blade 44, which are symmetrically disposed; the knife handle 41 obliquely penetrates through the knife feeding end of the shell 1 and is connected with the knife feeding end of the shell 1 in a sliding manner; the tip and the blade holder 42 fixed connection that the handle of a knife 41 stretches out shell 1, be provided with slider 7 between the tip that handle of a knife 41 stretches into shell 1 and the inclined plane of wedge 32, the tip that blade holder 42 deviates from handle of a knife 41 can dismantle in proper order and connect boring cutter 43, scraper 44, the tip that handle of a knife 41 stretches into shell 1 in the embodiment of this application sets up perpendicularly with the inclined plane of wedge 32, handle of a knife 41 stretches out and keeps blade holder 42 parallel with the axial lead after blade holder 42 has been installed to the tip of shell 1, install boring cutter 43 and scraper 44 on blade holder 42, make two unification composite blade with boring cutter 43 and scraper 44.

Referring to fig. 4, the slider 7 includes a T-block 71, a T-shaped groove 72; the T-shaped block 71 is fixedly connected to the end portion of the cutter handle 41 extending into the shell 1, the T-shaped groove 72 is formed in the inclined surface of the wedge block 32 and is connected with the T-shaped block 71 in a sliding mode, the T-shaped block 71 and the T-shaped groove 72 are arranged between the cutter handle 41 and the wedge block 32 in the embodiment of the application, so that when the wedge block 32 moves towards the feeding direction of the shell 1, the end portion of the cutter handle 41 extending into the shell 1 slides on the inclined surface of the wedge block 32 relatively and is extruded out of the shell 1 by the wedge block 32 in an inclined mode, expanding actions of the boring cutter 43 and the scraper 44 are further achieved, when all operations in the later period are completed and the wedge block 32 moves backwards along the feeding direction of the shell 1, the cutter handle 41 is driven to synchronously return through the T-shaped block 71 and the T-shaped groove 72, and synchronous retracting actions of the boring cutter 43 and the scraper 44 are achieved.

Referring to fig. 1, the second cutter assembly 5 includes a plurality of roller cutters 51, a roller groove 52, and a projection 53 arranged in an annular array; a plurality of through grooves 11 are formed in the side face annular array of the cutter feeding end of the shell 1, and the rolling grooves 52 are arranged in the through grooves 11 and are in sliding connection with the side walls of the through grooves 11; the hob 51 is arranged in the rolling groove 52 and is rotationally connected with the side wall of the rolling groove 52; the convex block 53 is fixedly connected with the end part of the rolling groove 52 departing from the hob 51, the convex block 53 is connected with the conical surface of the conical block 31 in a contact manner, in the embodiment of the present application, the hob 51 rotates in the rolling groove 52, the two ends of the hob 51 are in shaft connection with the side wall of the rolling groove 52, the convex block 53 is of a hemispherical structure, when the conical block 31 moves towards the feed end of the housing 1, the conical surface of the conical block 31 continuously extrudes the convex block 53, and then the hob 51 and the rolling groove 52 are extruded in the through groove 11 in a sliding manner along the radial direction, so that the expanding action of the hob 51 is realized.

Referring to fig. 2, the reset unit 6 includes symmetrically disposed springs 61, symmetrically disposed sliding slots 111 are symmetrically disposed on the side surface of the through slot 11, symmetrically disposed sliding blocks 521 are disposed on both sides of the rolling slot 52, both the sliding blocks 521 and the springs 61 are disposed in the sliding slots 111, and the sliding block 521 is slidably connected with the sliding slot 111, the spring 61 is arranged at one end of the sliding block 521, which is outward in the radial direction, the sliding block 521 is fixedly connected at two sides of the rolling slot 52 in the embodiment of the application, and slides in the sliding slot 111, when the tapered block 31 presses the projection 53 to push the rolling groove 52 radially outward, the slider 521 slides in the sliding groove 111 and presses the spring 61, after the hob 51 is finished and the conical block 31 is withdrawn along the axial direction, the hob 52 and the hob 51 are automatically reset under the restoring force of the spring 61, the rolling groove 52 and the hob 51 are retracted into the through groove 11 again, so that the boring cutter 43 is automatically retracted and the hob 51 is also automatically retracted synchronously.

Referring to fig. 1, the distance from the radially outward side of the hob 51 to the axial center is equal to the distance from the cutting edge of the boring cutter 43 and the cutting edge of the scraper 44 to the axial center; an angle α is formed between the inclined surface of the wedge block 32 and the shaft axis, an angle β is formed between the inclined surface of the tapered block 31 and the shaft axis, and tan β is sin α cos α, in the present embodiment, the end of the holder 41 extending into the housing 1 is always in contact with and perpendicular to the inclined surface of the wedge block 32, and due to the difference between the inclination of the inclined surface of the tapered block 31 and the inclination of the inclined surface of the wedge block 32, it cannot be guaranteed that the distance in the radial direction after the boring cutter 43 and the scraper 44 are expanded is equal to the distance in the radial direction after the hob 51 is expanded without data support, and therefore, in the present embodiment, through studying the geometric position relationship between the inclined surface of the wedge block 32 and the inclined surface of the tapered block 31, the operational relationship between the angle α and the angle β is found by inference that tan β is α cos α, and in the present embodiment, it is guaranteed that the distance from the radially outward side surface of the hob 51 to the shaft axis is equal to the tip of the boring cutter 43, The distance from the knife edge of the scraper 44 to the axis and the above calculation relations can realize that the radial distances of the expanding boring cutter 43, the scraper 44 and the hob 51 are synchronous and equal through the movement of the conical block 31 and the wedge block 32, the boring cutter 43, the scraper 44 and the hob 51 can be expanded at one time, the boring, scraping and rolling integrated operation of the workpiece can be completed, and the compensation of secondary feeding due to the fact that the distances of the expanding hob 51, the boring cutter 43 and the scraper 44 are inconsistent after the expanding of the boring cutter 43, the scraper 44 and the hob 51 is not needed.

The working principle of the boring, scraping and rolling compound cutter in the embodiment of the application is as follows:

referring to fig. 1, 5 and 6, before boring, scraping and rolling the blind hole 9, in the embodiment of the present invention, an annular wall avoiding groove 8 is formed on the innermost inner wall of the blind hole 9, the width of the avoiding groove 8 is greater than the distance between the scraper 44 and the hob 51, and the avoiding groove 8 is formed by another process, which is not within the structural range provided in the embodiment of the present invention, and then the rotary hydraulic cylinder 21 is started to rotate the rotary disc 22 and drive the screw rod 23 to rotate, and through the threaded connection between the screw rod 23 and the conical block 31, the conical block 31 is driven to move to the feeding end of the housing 1 along the inner wall of the housing 1, and the convex block 53 is extruded through the conical surface of the conical block 31, so that the rolling groove 52 and the hob 51 are extruded outwards in the radial direction in the through groove 11, and at the same time, the slide block 521 slides in the sliding groove 111 and extrudes the spring 61, and the cutter handle 41 is extruded through the inclined surface of the conical block 32, the end part of the cutter handle 41 extending into the shell 1 slides on the inclined plane of the wedge-shaped block 32 and is pushed out obliquely and outwards, so that the boring cutter 43, the scraper 44 and the hob 51 are expanded synchronously, then the shell 1 is driven to rotate at a high speed through an external driving device, the boring cutter 43, the scraper 44 and the hob 51 rotating at a high speed move towards the blind hole 9, the axis of the blind hole 9 is kept to be coincident with the axis of the boring and scraping composite cutter, the boring cutter 43 continuously bores the blind hole 9 when not reaching the avoiding groove 8, the subsequent scraping and rolling operations are sequentially carried out on the bored blind hole 9 through the scraper 44 and the hob 51, when the boring cutter 43 reaches the avoiding groove 8, the boring cutter 43 and the scraper 44 idle rotate in the avoiding groove 8, in the embodiment, the width of the avoiding groove 8 is set to be larger than the distance between the scraper 44 and the hob 51, and the hob 51 can be moved by a small displacement after the boring cutter 43 and the scraper 44 idle rotation, so that the hob 51 can move the boring cutter 43 and the boring cutter, The scraped inner surface of the blind hole 9 is completely rolled, so that the condition that the inner surface in the deep part of the blind hole 9 is not rolled due to the fact that the hob 51 cannot reach the inner surface, and the hob 51 cannot work completely is avoided; in the embodiment of the application, the rotating disc 22 rotates and simultaneously drives the limiting rod 24 to rotate in the arc-shaped groove 25, and the rotation of the limiting rod 24 is limited by the arc-shaped groove 25, so that the phenomenon that the moving distance of the conical block 31 is too large due to an overlarge actual rotating angle, and the phenomenon that the first cutter assembly 4 and the second cutter assembly 5 are excessively fed, so that the workpiece is damaged and the inside of the cutter is damaged is avoided; after the boring cutter 43 and the scraper 44 idle in the wall yielding groove and advance for a small displacement, it is ensured that the hob 51 rolls on the surface of the blind hole 9 outside the avoiding groove 8 completely, at this time, the rotary hydraulic cylinder 21 is driven to rotate in the reverse direction, and then the rotary disc 22 and the lead screw 23 are driven to rotate in the reverse direction, so that the conical block 31 is driven to move back in the reverse direction towards the cutter inlet end of the housing 1, meanwhile, the wedge block 32 drives the cutter handle 41 to retract synchronously through the T-shaped groove 72 and the T-shaped block 71, at this time, the conical surface of the conical block 31 does not extrude the bump 53, the rolling groove 52 and the hob 51 return to the through groove 11 under the action of the spring 61, and finally, the synchronous retraction of the boring cutter 43, the scraper 44 and the hob 51 is realized, and the composite cutter assembly is prevented from carrying out secondary scratch on the surface of the blind hole 9 when the composite cutter assembly integrally withdraws from the blind hole 9.

In another case in the embodiment of the present application, the rotary hydraulic cylinder 21 in the driving assembly 2 can be replaced by a hydraulic cylinder or a motor, that is, only the effect of reciprocating movement of the moving assembly 3 through the driving assembly 2 needs to be satisfied and realized, and the specific practical selection is reasonably selected through the required feeding precision.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims

1. The boring, scraping and rolling compound cutter is characterized by comprising a shell (1), a driving component (2), a moving component (3), a first cutter component (4), a second cutter component (5) and a resetting piece (6);

the driving assembly (2) and the moving assembly (3) are arranged inside the shell (1), the driving assembly (2) is fixedly connected with the inner wall of the shell (1), the moving assembly (3) is connected with the inner wall of the shell (1) in a sliding mode, and the output end of the driving assembly (2) is connected with the moving assembly (3) so as to drive the moving assembly (2) to move along the axial direction of the shell (1);

the first cutter component (4) penetrates through the cutting feed end of the shell (1) in an inclined mode, is connected with the moving component (3), and can be driven by the moving component (3) to stretch in an inclined mode;

the second cutter assembly (5) is arranged on the periphery of the shell (1) in a penetrating mode, is connected with the moving assembly (3) and can be driven by the moving assembly (3) to expand along the radial direction of the shell (1);

the reset piece (6) is arranged between the second cutter assembly (5) and the shell (1) and used for driving the second cutter assembly (5) to reset.

2. The boring-scraping-rolling compound tool according to claim 1, characterized in that the drive assembly (2) comprises a rotary hydraulic cylinder (21), a rotary disc (22) and a screw (23);

the cylinder body of the rotary hydraulic cylinder (21) is fixedly connected to the inner wall of the shell (1), and the output end of the rotary hydraulic cylinder (21) is fixedly connected with the rotating disc (22);

the screw rod (23) penetrates through the moving assembly (3) and is in threaded connection with the moving assembly (3), one end of the screw rod (23) is fixedly connected with the end face, deviating from the rotary hydraulic cylinder (21), of the rotating disc (22), and the other end of the screw rod (23) is rotatably connected with the feed end of the shell (1).

3. The boring-scraping-rolling compound tool as claimed in claim 2, characterized in that the moving assembly (3) comprises a conical block (31) and wedge blocks (32) symmetrically arranged about the centre line of the conical block (31);

the two wedge blocks (32) are arranged on the end face, away from the hydraulic cylinder (21), of the conical block (31), and the inclined surfaces of the wedge blocks (32) are in sliding connection with the first cutter assembly (4);

the side surface of the conical block (31) is in sliding connection with the inner wall of the shell (1), and the conical surface of the conical block (31) is in contact connection with the second cutter assembly (5).

4. The boring-scraping-rolling compound tool as claimed in claim 3, characterized in that the conical block (31) is provided with two arc-shaped grooves (25) which penetrate along the direction of the own axis, and the two arc-shaped grooves (25) are symmetrically arranged about the own axis;

the wire drawing machine is characterized by further comprising two limiting rods (24) symmetrically arranged on two sides of the screw rod (23), one ends of the two limiting rods (24) are connected with the rotating disc (22), and the other ends of the two limiting rods (24) extend into the two arc-shaped grooves (25) respectively.

5. The boring-scraping-rolling compound tool as claimed in claim 3, characterized in that the first tool assembly (4) comprises a tool shank (41), a tool holder (42), a boring tool (43) and a scraper (44) which are arranged symmetrically about the axial center line of the housing (1);

the cutter handle (41) obliquely penetrates through the cutting feed end of the shell (1) and is in sliding connection with the cutting feed end of the shell (1); the end portion, extending out of the shell (1), of the cutter handle (41) is fixedly connected with the cutter seat (42), a sliding piece (7) is arranged between the end portion, extending into the shell (1), of the cutter handle (41) and the inclined surface of the wedge block (32), and the end portion, deviating from the cutter handle (41), of the cutter seat (42) is sequentially detachably connected with the boring cutter (43) and the scraper (44).

6. The boring-scraping-rolling compound tool according to claim 5, characterized in that the slide (7) comprises a T-shaped block (71) and a T-shaped slot (72);

the T-shaped block (71) is fixedly connected to the end part of the knife handle (41) extending into the shell (1), and the T-shaped groove (72) is formed in the inclined surface of the wedge-shaped block (32) and is in sliding connection with the T-shaped block (71).

7. The boring-scraping-rolling compound cutter according to claim 5, characterized in that the second cutter assembly (5) comprises a plurality of roller cutters (51), roller slots (52) and lugs (53) arranged along a peripheral annular array of the housing (1);

a plurality of through grooves (11) are formed in the side face annular array of the feed end of the shell (1), and the rolling grooves (52) are arranged in the through grooves (11) and are in sliding connection with the side walls of the through grooves (11);

the hob (51) is arranged in the rolling groove (52) and is rotationally connected with the side wall of the rolling groove (52);

the lug (53) is fixedly connected with the end part of the rolling groove (52) departing from the hob (51), and the lug (53) is in contact connection with the conical surface of the conical block (31).

8. The boring, scraping and rolling compound tool according to claim 7, wherein the reset piece (6) comprises a spring (61), sliding grooves (111) are symmetrically formed in the side surfaces of the through grooves (11), sliding blocks (521) are symmetrically arranged on two sides of the rolling groove (52), the sliding blocks (521) and the spring (61) are arranged in the sliding grooves (111), the sliding blocks (521) are slidably connected with the sliding grooves (111), and the spring (61) is arranged at one end, radially outward, of the sliding blocks (521).

9. The boring and scraping compound tool according to claim 7, characterized in that the distance between the radially outward side of the hob (51) and the axis of the housing (1) is equal to the distance between the tip of the boring cutter (43), the tip of the scraper (44) and the axis of the housing (1).

10. The boring and scraping compound tool according to claim 3, characterized in that the inclined surface of the wedge block (32) forms an angle α with the axial line of the housing (1), and the inclined surface of the cone block (31) forms an angle β with the axial line of the housing (1), and tan β ═ sin α cos α.