A composite boring, scraping and rolling tool

Abstract

The present application discloses a composite boring, scraping and rolling tool, comprising a housing, a drive assembly, a moving assembly, a first tool assembly, and a second tool assembly; the drive assembly and the moving assembly are both disposed within the housing, the drive assembly being fixedly connected to the inner cavity of the housing, and the output end of the drive assembly being connected to the moving assembly; the moving assembly being slidably connected to the inner wall of the housing, the moving assembly being slidably connected to the first tool assembly, and the moving assembly being contact-connected to the second tool assembly; the first tool assembly obliquely penetrates the feed end of the housing and is slidably connected to the feed end of the housing; the second tool assembly is disposed through the outer periphery of the housing and is slidably connected to the housing, and a reset member is disposed between the second tool assembly and the housing. The present application simplifies the internal structure of the composite boring, scraping and rolling tool, meets the purpose of synchronously expanding and retracting the boring cutter, scraper, and rolling cutter at one time, and achieves the effect of boring, scraping and rolling operations on blind holes at one time.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing equipment, and in particular to a boring, scraping and rolling composite tool. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It is the most important component of engineering machinery. The existing coal mine production has a large loss on the hydraulic cylinder. After long-term use, the inner surface roughness of the hydraulic cylinder does not meet the requirements and the inner surface of the hydraulic cylinder needs to be re-grinded and trimmed. Boring and scraping are commonly used methods for processing deep holes and the inner surface of the hydraulic cylinder. Rough boring is the first process of processing, in which the inner surface machining allowance is removed by rotating the boring tool and scraping; fine boring is the second process of processing, which provides an excellent foundation for rolling by scraping the hole after rough boring, that is, scraping process; rolling is the third process, which is to improve the hardness of the rolling head. High rollers squeeze the inner surface, causing it to produce slight plastic deformation, thereby reducing surface roughness and increasing surface hardness. Rolling is a pressure finishing process that utilizes the cold plasticity of metal at room temperature. The rolling tool applies a certain amount of pressure to the workpiece surface, causing the surface metal to plastically flow and fill the original residual concave troughs, thereby reducing the surface roughness of the workpiece. Due to the plastic deformation of the rolled surface metal, the surface structure is cold-hardened and the grains are refined, forming a dense fibrous structure and a residual stress layer. The hardness and strength are increased, thereby improving the wear resistance, corrosion resistance and compatibility of the workpiece surface. Rolling is a non-cutting plastic processing method.

[0003] The existing boring head is a solid structure, and boring, scraping and rolling are generally used to process the holes respectively. The shortcomings of the above-mentioned boring tooling equipment are low integration and complex process. One boring tool corresponds to one processing process. The standardized control technology is difficult, the processing precision is low, and the production cost is high. When the inner surface of the hydraulic cylinder is traditionally trimmed, the hydraulic cylinder base is first cut off, and the remaining cylinder through-holes are bored, scraped, and finally rolled. Finally, the hydraulic cylinder base is welded to the cylinder body to achieve the trimming of the hydraulic cylinder. The overall operation is time-consuming and labor-intensive. Only boring, scraping and rolling operations can be performed on the through-holes, and the integrated boring, scraping and rolling operations of the blind holes cannot be achieved at one time. In addition, there is also a direct grinding process on the inner surface of the hydraulic cylinder first, and then a rolling process. However, grinding one meter of the cylinder body takes about one year. In two days, it takes about ten to thirty minutes to roll one meter of the cylinder body. The difference in production cycle is very obvious. After rolling, the surface roughness of the hole is reduced from Ra3.2~6.3μm before rolling to Ra0.4~0.8μm, the surface hardness of the hole is increased by about 30%, and the fatigue strength of the inner surface of the cylinder is increased by 25%. If only the influence of the cylinder is considered, the service life of the cylinder is increased by two to three times. From the above, it is not difficult to see that the boring and scraping rolling process is about three times more efficient than the grinding process. The above data show that the rolling process is efficient and can greatly improve the surface quality of the cylinder. However, there are still some problems that need to be solved in the actual production of the existing deep hole processing CNC boring and scraping rolling process.

[0004] The front end of the boring roller tool in the existing technology is a boring device, most of which can be equipped with 2-8 indexable blades, which can be selected according to the diameter of the workpiece and the processing requirements; the rear part is a rolling tool with 4-50 rollers and corresponding polyurethane shock pads; the center of the tool can be water-free or not; in actual processing (provided that it is used on the corresponding machine tool): one is to complete the processing by feeding boring and mirror rolling in one time; the other is to bore first, and when the boring roller tool retracts, the boring tool moves slightly toward the center to avoid contacting the processing surface twice, and the rollers of the rolling tool expand outward, and the rolled workpiece obtains a mirror surface. During the process, tools for integrated boring, scraping and rolling operations on blind holes were gradually developed. After the rolling operation was completed, it was considered that the hob might cause secondary damage to the polished inner surface of the cylinder body when the hob was retracted. Therefore, the hob in the prior art has the function of expanding and retracting. When retracting the hob, the retraction of the hob is controlled to avoid secondary damage to the inner surface of the cylinder body. However, the expansion and retraction of the hob, boring tool and scraper in the prior art are all achieved through their own separate expansion and retraction mechanisms, and the expansion and retraction of the hob, boring tool and scraper cannot be achieved synchronously, resulting in a complex internal structure of the integrated boring, scraping and rolling tool in the prior art. Summary of the Invention

[0005] The present application provides a boring, scraping and rolling composite tool to solve the problem in the prior art that it is impossible to perform boring, scraping and rolling operations on blind holes at one time, and it is impossible to synchronously expand and retract the boring cutter, scraper and rolling cutter. The internal structure of the boring, scraping and rolling composite tool is simplified, and the purpose of synchronously expanding and retracting the boring cutter, scraper and rolling cutter at one time is achieved.

[0006] The present application provides a boring, scraping and rolling composite tool, comprising a housing, a driving assembly, a moving assembly, a first tool assembly, a second tool assembly and a reset member; the driving assembly and the moving assembly are both arranged inside the housing, the driving assembly is fixedly connected to the inner wall of the housing, the moving assembly is slidably connected to the inner wall of the housing, and the output end of the driving assembly is connected to the moving assembly to drive the moving assembly to move axially along the housing; the first tool assembly obliquely penetrates the feed end of the housing and is connected to the moving assembly, and can be extended and retracted obliquely under the drive of the moving assembly; the second tool assembly is arranged on the outer periphery of the housing and is connected to the moving assembly, and can be expanded radially along the housing under the drive of the moving assembly; the reset member is arranged between the second tool assembly and the housing, and is used to drive the second tool assembly to reset.

[0007] In one possible implementation, the driving assembly includes a rotary hydraulic cylinder, a rotating disk and a screw; the cylinder body of the rotary hydraulic cylinder is fixedly connected to the inner wall of the outer shell, and the output end of the rotary hydraulic cylinder is fixedly connected to the rotating disk; the screw passes through the moving assembly and is threadedly connected to the moving assembly, one end of the screw is fixedly connected to the end face of the rotating disk facing away from the rotary hydraulic cylinder, and the other end of the screw is rotatably connected to the feed end of the outer shell.

[0008] In one possible implementation, the moving assembly includes a conical block and a wedge block symmetrically arranged about the center line of the conical block; the two wedge blocks are arranged on the end surface of the conical block facing away from the hydraulic cylinder, and the inclined surface of the wedge block is slidingly connected to the first tool assembly; the side surface of the conical block is slidingly connected to the inner wall of the outer shell, and the conical surface of the conical block is in contact with the second tool assembly.

[0009] In one possible implementation, the conical block is provided with two arc-shaped grooves extending along its own axis, and the two arc-shaped grooves are symmetrically arranged about its own axis; it also includes two limit rods symmetrically arranged on both sides of the screw rod, one end of the two limit rods is connected to the rotating disk, and the other end of the two limit rods extends into the two arc-shaped grooves respectively.

[0010] In one possible implementation, the first tool assembly includes a tool handle, a tool holder, a boring tool, and a scraper symmetrically arranged about the axis of the housing; the tool handle obliquely penetrates the feed end of the housing and is slidably connected to the feed end of the housing; the end of the tool handle extending out of the housing is fixedly connected to the tool holder, a sliding member is provided between the end of the tool handle extending into the housing and the inclined surface of the wedge block, and the end of the tool holder facing away from the tool handle is detachably connected to the boring tool and the scraper in sequence.

[0011] In one possible implementation, the sliding member includes a T-shaped block and a T-shaped slot; the T-shaped block is fixedly connected to the end of the tool handle extending into the housing, and the T-shaped slot is opened on the inclined surface of the wedge block and is slidingly connected to the T-shaped block.

[0012] In one possible implementation, the second tool assembly includes a plurality of rollers, roller grooves, and protrusions arranged in a circular array; a plurality of through grooves are provided in a circular array on the side surface of the feed end of the housing, the roller grooves are arranged in the through grooves and are slidingly connected to the side walls of the through grooves; the rollers are arranged in the roller grooves and are rotationally connected to the side walls of the roller grooves; the protrusions are fixedly connected to the end of the roller groove facing away from the roller, and the protrusions are in contact with the conical surface of the conical block.

[0013] In one possible implementation, the reset member includes a symmetrically arranged spring, the side surfaces of the through groove are symmetrically provided with sliding grooves, and the two sides of the rolling groove are symmetrically provided with sliders, the sliders and springs are both arranged in the sliding grooves, and the sliders are slidably connected to the sliding grooves, and the springs are arranged at one end of the slider facing radially outward.

[0014] In a possible implementation, the distance from the radially outward side of the hob to the axis is equal to the distance from the tip of the boring tool and the tip of the scraper to the axis.

[0015] In a possible implementation, an angle α is formed between the inclined surface of the wedge block and the axis, and an angle β is formed between the conical surface of the conical block and the axis, where tanβ=sinα*cosα.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0017] The present application arranges a driving component and a moving component inside the shell, controls the driving component to realize the movement of the moving component, and then slidably connects the moving component with the first tool component and contact-connects the moving component with the second tool component, so that when the moving component moves inside the shell, it simultaneously drives the first tool component and the second tool component to expand. After the boring, scraping and rolling operation is completed, the first tool component is driven to retract and reset synchronously by the moving component, and the second tool component is automatically reset by setting a reset part, which effectively solves the problem in the prior art that it is impossible to perform boring, scraping and rolling operations on blind holes at one time, and it is impossible to synchronously realize the expansion and retraction of the boring cutter, scraper and rolling cutter, thereby simplifying the internal structure of the boring, scraping and rolling composite tool under the premise of synchronously expanding and retracting the boring cutter, scraper and rolling cutter at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A cross-sectional view of a boring, scraping and rolling composite tool provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 A partial enlarged view of area A in the middle;

[0021] Figure 3 An axonometric view of a tapered block and a drive assembly provided in an embodiment of the present application;

[0022] Figure 4 An axonometric view of a wedge block, a tool handle, and a sliding member provided in an embodiment of the present application;

[0023] Figure 5 This is a corresponding schematic diagram of the boring, scraping and rolling composite tool provided in an embodiment of the present application before machining a blind hole;

[0024] Figure 6 This is a schematic diagram of the boring cutter and scraper of the boring, scraping and rolling composite tool provided in an embodiment of the present application entering the avoidance groove.

[0025] Figure markings: 1-housing; 11-through groove; 111-slide groove; 12-slide groove; 2-drive assembly; 21-rotating hydraulic cylinder; 22-rotating disk; 23-screw; 24-limiting rod; 25-arc groove; 3-moving assembly; 31-conical block; 311-sliding block; 32-wedge block; 4-first tool assembly; 41-tool handle; 42-tool holder; 43-boring tool; 44-scraper; 5-second tool assembly; 51-hob; 52-rolling groove; 521-slider; 53-bump; 6-reset member; 61-spring; 7-sliding member; 71-T-block; 72-T-slot; 8-avoidance groove; 9-blind hole. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0028] Reference Figure 1 、 2, 4. A boring, scraping and rolling composite tool provided in an embodiment of the present application comprises a housing 1, a driving assembly 2, a moving assembly 3, a first tool assembly 4, a second tool assembly 5 and a reset member 6; the driving assembly 2 and the moving assembly 3 are both arranged inside the housing 1, the driving assembly 2 is fixedly connected to the inner wall of the housing 1, the moving assembly 3 is slidably connected to the inner wall of the housing 1, the output end of the driving assembly 2 is connected to the moving assembly 3 to drive the moving assembly 2 to move axially along the housing 1; the first tool assembly 4 obliquely penetrates the feed end of the housing 1 and is connected to the moving assembly 3, and can be obliquely extended and retracted under the drive of the moving assembly 3; the second tool assembly 5 is arranged through the outer periphery of the housing 1 and is connected to the moving assembly 3, and can be driven by the moving assembly 3 The lower edge of the shell 1 expands radially; the reset member 6 is arranged between the second tool assembly 5 and the shell 1, and is used to drive the second tool assembly 5 to reset. The embodiment of the present application controls the driving assembly 2 to drive the moving assembly 3 to move, and then realizes the expansion function of the first tool assembly 4 and the second tool assembly 5 through the moving assembly 3. The sliding connection relationship between the moving assembly 3 and the first tool assembly 4 makes it possible to drive the first tool assembly 4 to retract synchronously when the moving assembly 3 retracts. The reset member 6 is set, so that after the moving assembly 3 retracts, the second tool assembly 5 is automatically reset and retracted synchronously, and finally the expansion and retraction functions of the first tool assembly 4 and the second tool assembly 5 are completed at one time by the driving assembly 2 and the moving assembly 3.

[0029] Reference Figure 1 、 3 The driving component 2 includes a rotating hydraulic cylinder 21, a rotating disk 22 and a screw rod 23; the cylinder body of the rotating hydraulic cylinder 21 is fixedly connected to the inner wall of the outer shell 1, and the output end of the rotating hydraulic cylinder 21 is fixedly connected to the rotating disk 22; the screw rod 23 passes through the moving component 3 and is threadedly connected to the moving component 3. One end of the screw rod 23 is fixedly connected to the end face of the rotating disk 22 away from the rotating hydraulic cylinder 21, and the other end of the screw rod 23 is rotatably connected to the feed end of the outer shell 1. In the embodiment of the present application, the driving component 2 uses a rotating hydraulic cylinder 21. By controlling the rotation of the output end of the rotating hydraulic cylinder 21, the rotating disk 22 is driven to rotate, and the rotating disk 22 then drives the screw rod 23 to rotate. The screw rod 23 rotates with the rotating disk 22, thereby realizing the sliding movement of the moving component 3 along the inner wall of the outer shell 1.

[0030] Reference Figure 1 、 3The movable assembly 3 includes a conical block 31 and a wedge block 32 symmetrically arranged about the center line of the conical block 31; the two wedge blocks 32 are arranged on the end surface of the conical block 31 away from the hydraulic cylinder 21, and the inclined surface of the wedge block 32 is slidingly connected to the first tool assembly 4; the side surface of the conical block 31 is slidingly connected to the inner wall of the shell 1, and the conical surface of the conical block 31 is in contact with the second tool assembly 5. In the embodiment of the present application, the side surface of the conical block 31 is symmetrically provided with sliding blocks 311, and the inner wall of the shell 1 is symmetrically provided with sliding grooves 12. The sliding blocks 311 slide back and forth in the sliding grooves 12 to realize the sliding movement of the conical block 31 on the inner wall of the shell 1. When the conical block 31 moves toward the feed end of the shell 1, the second tool assembly 5 is pushed by the conical surface of the conical block 31, and the first tool assembly 4 is pushed by the inclined surface of the wedge block 32, so as to realize the synchronous action of the first tool assembly 4 and the second tool assembly 5.

[0031] Reference Figure 3 The conical block 31 is provided with two arc grooves 25 that pass through along its own axis, and the two arc grooves 25 are symmetrically arranged about its own axis; the embodiment of the present application also includes two limit rods 24 symmetrically arranged on both sides of the screw rod 23, one end of the two limit rods 24 is connected to the rotating disk 22, and the other ends of the two limit rods 24 extend into the two arc grooves 25 respectively. In the embodiment of the present application, the limit rods 24 can only move within the range of the arc grooves 25 by rotating the rotating disk 22, thereby realizing the limitation of the rotation angle of the rotating disk 22 by the limit rods 24 and the arc grooves 25, avoiding the actual rotation angle being too large, resulting in excessive movement distance of the conical block 31, causing transition feed of the first tool assembly 4 and the second tool assembly 5, causing damage to the workpiece and damage to the inside of the tool.

[0032] Reference Figure 1 The first tool assembly 4 includes a symmetrically arranged tool handle 41, a tool seat 42, a boring tool 43 and a scraper 44; the tool handle 41 obliquely penetrates the feed end of the shell 1 and is slidably connected to the feed end of the shell 1; the end of the tool handle 41 extending out of the shell 1 is fixedly connected to the tool seat 42, and a sliding member 7 is provided between the end of the tool handle 41 extending into the shell 1 and the inclined surface of the wedge block 32. The end of the tool seat 42 facing away from the tool handle 41 is detachably connected to the boring tool 43 and the scraper 44 in sequence. In the embodiment of the present application, the end of the tool handle 41 extending into the shell 1 is arranged perpendicular to the inclined surface of the wedge block 32. After the tool seat 42 is installed on the end of the tool handle 41 extending out of the shell 1, the tool seat 42 is kept parallel to the axis line, and the boring tool 43 and the scraper 44 are installed on the tool seat 42 to make the boring tool 43 and the scraper 44 into a two-in-one composite blade.

[0033] Reference Figure 4The sliding member 7 includes a T-shaped block 71 and a T-shaped slot 72; the T-shaped block 71 is fixedly connected to the end of the tool handle 41 extending into the shell 1, and the T-shaped slot 72 is opened on the inclined surface of the wedge block 32 and is slidably connected to the T-shaped block 71. In the embodiment of the present application, the T-shaped block 71 and the T-shaped slot 72 are arranged between the tool handle 41 and the wedge block 32, so that when the wedge block 32 moves in the feed direction of the shell 1, the end of the tool handle 41 extending into the shell 1 slides relatively on the inclined surface of the wedge block 32 and is squeezed obliquely out of the shell 1 by the wedge block 32, thereby realizing the expansion action of the boring tool 43 and the scraper 44. When all the operations are completed in the later stage and the wedge block 32 moves backward along the feed direction of the shell 1, the tool handle 41 is synchronously retracted by the T-shaped block 71 and the T-shaped slot 72, thereby realizing the synchronous retraction action of the boring tool 43 and the scraper 44.

[0034] Reference Figure 1 The second tool assembly 5 includes a plurality of rollers 51, roller grooves 52 and protrusions 53 arranged in an annular array; a plurality of through grooves 11 are opened in an annular array on the side of the feed end of the shell 1, and the roller grooves 52 are arranged in the through grooves 11 and are slidably connected to the side walls of the through grooves 11; the roller 51 is arranged in the roller groove 52 and is rotatably connected to the side walls of the roller groove 52; the protrusion 53 is fixedly connected to the end of the roller groove 52 away from the roller 51, and the protrusion 53 is in contact with the conical surface of the conical block 31. In the embodiment of the present application, the roller 51 rotates in the roller groove 52, and the two ends of the roller 51 are axially connected to the side walls of the roller groove 52. The protrusion 53 is a hemispherical structure. When the conical block 31 moves toward the feed end of the shell 1, the conical surface of the conical block 31 continuously squeezes the protrusion 53, thereby realizing the radial outward sliding extrusion of the roller 51 and the roller groove 52 in the through groove 11, thereby realizing the expansion action of the roller 51.

[0035] Reference Figure 2 The cam 521 is engaged with the spring 61 and is pressed against the spring 61 to release the spring 61, so that the cam 521 and the spring 61 are pressed against the spring 61, and the cam 521 is pressed against the spring 61 to release the spring 61.

[0036] Reference Figure 1, the distance from the radially outward side of the hob 51 to the axis is equal to the distance from the tip of the boring tool 43 and the tip of the scraper 44 to the axis; an angle α is formed between the inclined surface of the wedge block 32 and the axis center line, and an angle β is formed between the conical surface of the tapered block 31 and the axis center line, tanβ=sinα*cosα. In the embodiment of the present application, the end of the tool handle 41 extending into the housing 1 is kept in contact with and perpendicular to the inclined surface of the wedge block 32 at all times. Due to the different inclinations of the conical surface of the tapered block 31 and the inclined surface of the wedge block 32, it is impossible to ensure that the radial distance of the boring tool 43 and the scraper 44 after they are expanded is equal to the radial distance of the hob 51 after they are expanded without data support. Therefore, in the embodiment of the present application, the geometric positions of the inclined surface of the wedge block 32 and the conical surface of the tapered block 31 are connected. Through research on the system, it is concluded through reasoning that the operational relationship between angle α and angle β is tanβ=sinα*cosα. In the embodiment of the present application, as long as the distance from the radially outward side of the hob 51 to the axis is equal to the distance from the tip of the boring tool 43 and the tip of the scraper 44 to the axis, and the above operational relationship is met, it is possible to achieve synchronous and equal radial distances of the boring tool 43, the scraper 44 and the hob 51 by moving the conical block 31 and the wedge block 32, so as to expand the boring tool 43, the scraper 44 and the hob 51 at one time and complete the integrated boring, scraping and rolling operation of the workpiece. There is no need to perform secondary feed compensation after the boring tool 43, the scraper 44 and the hob 51 are expanded due to the inconsistency of the expanded distances of the hob 51 and the boring tool 43 and the scraper 44.

[0037] The working principle of a composite boring, scraping and rolling tool in the embodiment of the present application is as follows:

[0038] Reference Figure 1 、 56. In the embodiment of the present application, before boring, scraping and rolling the blind hole 9, an annular wall avoidance groove 8 is first opened on the inner wall of the deepest part of the blind hole 9. The width of the avoidance groove 8 is greater than the distance between the scraper 44 and the roller 51. The opening of the avoidance groove 8 is carried out by another process, and its structure is not within the scope of the structure provided in the embodiment of the present application. After that, the rotary hydraulic cylinder 21 is started to rotate the rotating disk 22 and drive the screw rod 23 to rotate. Through the threaded connection between the screw rod 23 and the tapered block 31, the tapered block 31 is driven to move along the inner wall of the shell 1 toward the feed end of the shell 1 The conical surface of the conical block 31 squeezes the convex block 53, thereby realizing that the rolling groove 52 and the roller cutter 51 are squeezed radially outward in the through groove 11. At the same time, the slider 521 slides in the slide groove 111 and squeezes the spring 61. The inclined surface of the wedge block 32 squeezes the tool handle 41. The end of the tool handle 41 extending into the housing 1 slides on the inclined surface of the wedge block 32 and is pushed out obliquely, realizing that the boring cutter 43, the scraper 44 and the roller cutter 51 are expanded synchronously. Then, the housing 1 is driven to rotate at high speed by an external driving device, and the high-speed rotating boring cutter 43 and the scraper 44 are pushed outward. The boring tool 43 and the scraper 44 are moved to the side of the boring tool 43, and the boring tool 43 and the scraper 44 are moved to the side of the boring tool 43. The boring tool 43 and the scraper 44 are moved to the side of the boring tool 43, and the boring tool 43 and the scraper 44 are moved to the side of the boring tool 43. The width of the avoidance groove 8 is greater than the distance between the scraper 44 and the hob 51 in the embodiment of the present application. The boring tool 43 and the scraper 44 are moved to the side of the boring tool 43, and the boring tool 43 and the scraper 44 are moved to the side of the boring tool 43. The hob 51 rolls and presses the entire inner surface of the blind hole 9 that has been bored and scraped, thereby preventing the inner surface deep in the blind hole 9 from not being rolled and pressed due to the hob 51 being unable to reach it, resulting in incomplete operation of the hob 51. In the embodiment of the present application, the rotating disk 22 rotates while driving the limit rod 24 to rotate in the arc groove 25. The arc groove 25 limits the rotation of the limit rod 24, thereby preventing the actual rotation angle from being too large, resulting in excessive movement of the tapered block 31, causing excessive feed of the first tool assembly 4 and the second tool assembly 5, and causing damage to the workpiece and the interior of the tool.After the boring tool 43 and scraper 44 idle in the wall groove and advance a short distance, ensuring that the hob 51 has completely rolled the surface of the blind hole 9 outside the avoidance groove 8, the rotary hydraulic cylinder 21 is driven to rotate in the opposite direction, thereby driving the rotating disk 22 and the screw rod 23 to rotate in the opposite direction, thereby driving the conical block 31 to move back toward the feed end of the housing 1. At the same time, the wedge block 32 drives the tool handle 41 to retract synchronously through the T-slot 72 and T-block 71. At this time, the conical surface of the conical block 31 does not squeeze the protrusion 53. Under the action of the spring 61, the rolling groove 52 and the hob 51 return to the through groove 11. Finally, the boring tool 43, scraper 44, and hob 51 are synchronously retracted, preventing the composite tool assembly from scratching the surface of the blind hole 9 again when it withdraws from the blind hole 9 as a whole.

[0039] In another case in the embodiment of the present application, the rotating hydraulic cylinder 21 in the driving component 2 can be replaced by a hydraulic cylinder or a motor, that is, it is only necessary to meet and realize the effect of reciprocating movement of the moving component 3 through the driving component 2. The specific actual selection is reasonably selected based on the required feed accuracy.

[0040] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A composite boring, scraping and rolling tool, characterized in that: It comprises a housing (1), a driving assembly (2), a moving assembly (3), a first tool assembly (4), a second tool assembly (5) and a reset member (6); The driving component (2) and the moving component (3) are both arranged inside the housing (1); the driving component (2) is fixedly connected to the inner wall of the housing (1); the moving component (3) is slidably connected to the inner wall of the housing (1); the output end of the driving component (2) is connected to the moving component (3) to drive the moving component (2) to move along the axial direction of the housing (1); The first tool assembly (4) obliquely penetrates the feed end of the housing (1) and is connected to the moving assembly (3), and can be extended and retracted obliquely under the drive of the moving assembly (3); The second tool assembly (5) is provided through the outer periphery of the housing (1) and is connected to the moving assembly (3), and can be expanded in the radial direction of the housing (1) under the drive of the moving assembly (3); The reset member (6) is arranged between the second tool assembly (5) and the housing (1) and is used to drive the second tool assembly (5) to reset; The driving assembly (2) comprises a rotary hydraulic cylinder (21), a rotating disk (22) and a screw rod (23); The cylinder body of the rotary hydraulic cylinder (21) is fixedly connected to the inner wall of the housing (1), and the output end of the rotary hydraulic cylinder (21) is fixedly connected to the rotating disk (22); The screw rod (23) passes through the moving assembly (3) and is threadedly connected to the moving assembly (3); one end of the screw rod (23) is fixedly connected to the end surface of the rotating disk (22) facing away from the rotary hydraulic cylinder (21); the other end of the screw rod (23) is rotatably connected to the feed end of the housing (1); The moving assembly (3) includes a tapered block (31) and a wedge-shaped block (32) symmetrically arranged about the center line of the tapered block (31); The two wedge blocks (32) are arranged on the end surface of the conical block (31) facing away from the hydraulic cylinder (21), and the inclined surfaces of the wedge blocks (32) are slidably connected to the first tool assembly (4); The side surface of the conical block (31) is slidably connected to the inner wall of the housing (1), and the conical surface of the conical block (31) is in contact with the second tool assembly (5); The conical block (31) is provided with two arc-shaped grooves (25) extending along its own axis, and the two arc-shaped grooves (25) are symmetrically arranged about its own axis; It also includes two limiting rods (24) symmetrically arranged on both sides of the screw rod (23), one end of the two limiting rods (24) is connected to the rotating disk (22), and the other ends of the two limiting rods (24) extend into the two arc-shaped grooves (25) respectively; The first tool assembly (4) comprises a tool handle (41), a tool seat (42), a boring tool (43) and a scraper (44) which are symmetrically arranged about the axis of the housing (1); The knife handle (41) obliquely penetrates the feed end of the housing (1) and is slidably connected to the feed end of the housing (1); the end of the knife handle (41) extending out of the housing (1) is fixedly connected to the knife seat (42); a sliding member (7) is provided between the end of the knife handle (41) extending into the housing (1) and the inclined surface of the wedge block (32); the end of the knife seat (42) facing away from the knife handle (41) is detachably connected to the boring tool (43) and the scraper (44) in sequence; The sliding member (7) comprises a T-shaped block (71) and a T-shaped slot (72); The T-shaped block (71) is fixedly connected to the end of the knife handle (41) extending into the housing (1); the T-shaped slot (72) is opened on the inclined surface of the wedge block (32) and is slidably connected to the T-shaped block (71); The second tool assembly (5) comprises a plurality of roller cutters (51), roller grooves (52) and protrusions (53) arranged in an annular array along the outer periphery of the housing (1); A plurality of through grooves (11) are provided in a circular array on the side surface of the feed end of the housing (1), and the rolling groove (52) is arranged in the through groove (11) and is slidably connected to the side wall of the through groove (11); The rolling cutter (51) is arranged in the rolling groove (52) and is rotatably connected to the side wall of the rolling groove (52); The convex block (53) is fixedly connected to the end of the rolling groove (52) facing away from the rolling cutter (51), and the convex block (53) is in contact with the conical surface of the conical block (31); An angle α is formed between the inclined surface of the wedge block (32) and the axis of the housing (1), and an angle β is formed between the conical surface of the conical block (31) and the axis of the housing (1), wherein tanβ=sinα*cosα; the end of the shank (41) extending into the housing (1) is kept in constant contact and perpendicular to the inclined surface of the wedge block (32).

2. The boring, scraping and rolling composite tool according to claim 1, characterized in that: The reset member (6) includes a spring (61), a sliding groove (111) is symmetrically provided on the side of the through groove (11), and sliders (521) are symmetrically provided on both sides of the rolling groove (52), the sliders (521) and the spring (61) are both arranged in the sliding groove (111), and the slider (521) is slidably connected to the sliding groove (111), and the spring (61) is arranged at one end of the slider (521) facing radially outward.

3. The boring, scraping and rolling composite tool according to claim 1, characterized in that: The distance between the radially outward side surface of the hob (51) and the axis of the housing (1) is equal to the distance between the tip of the boring tool (43), the tip of the scraper (44) and the axis of the housing (1).

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