CN210413466U

CN210413466U - Boring, scraping and rolling integrated boring head

Info

Publication number: CN210413466U
Application number: CN201921115804.0U
Authority: CN
Inventors: 李杵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-28
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a boring scraping and rolling integrated boring head, which comprises a main shaft, wherein an expansion and contraction cutter part, a first driving part, a rolling part and a second driving part are arranged on the main shaft, and the first driving part is used for driving the expansion and contraction cutter part so as to realize expansion and retraction of a cutter block; the second driving part is used for driving the rolling part so as to realize rolling and return stroke after rolling. The boring head aims to solve the problems caused by the singleness of the existing boring head, realize the integration of boring, scraping and rolling and improve the production efficiency.

Description

Boring, scraping and rolling integrated boring head

Technical Field

The utility model relates to the field of machining, especially, relate to an integrative boring head is scraped to boring.

Background

The boring and rolling is a common processing mode for processing deep holes and the inner surface of a steel pipe, and comprises the steps of scraping and boring by rotating a boring cutter to remove the processing allowance of the inner surface, and correcting holes; and extruding the inner surface of the hole by a rolling cutter to generate tiny plastic deformation, thereby reducing the roughness of the surface, improving the surface hardness and finishing the deep hole processing.

However, the existing boring head has the following disadvantages:

1. the boring, the fine scraping and the rolling are divided into a plurality of processes, so that the working efficiency is low

2. The automatic expansion and contraction of the cutter can not be realized, and the operation is troublesome.

3. The precision cutter adjusting system is not available, workpieces made of different materials and having different precision requirements are difficult to match, only one type of cutter can be matched corresponding to one type of workpiece, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, an object of the utility model is to provide an integrative boring head is scraped to boring at least, aim at solving the problem that the unicity of current boring head brought, realize that the boring is scraped and is rolled integrative integration, improve production efficiency.

In order to achieve the above and other related objects, an embodiment of the present invention provides a boring scraping and rolling integrated boring head, which includes a main shaft, wherein an expansion and contraction cutter part, a first driving part, a rolling part and a second driving part are mounted on the main shaft, and the first driving part is used for driving the expansion and contraction cutter part to realize expansion and retraction of a cutter block; the second driving part is used for driving the rolling part so as to realize rolling and return stroke after rolling.

Optionally, the collapsible knife member comprises: the tool comprises an expansion and contraction tool conical block and a tool body sleeved on the main shaft, wherein a fine tool block is arranged on the tool body, and the expansion and contraction tool conical block drives the fine tool block to expand and retract when moving up and down.

Optionally, the first driving component comprises a knife expanding push rod and a knife expanding piston; the upper part of the expanding cutter push rod is provided with a cutter withdrawing ring, the expanding cutter push rod is further provided with an expanding cutter conical block, the expanding cutter push rod, the expanding cutter conical block and the cutter withdrawing ring move synchronously in the axial direction, the cutter withdrawing ring is positioned in a first cavity in the cutter body, the expanding cutter push rod is positioned in a second cavity and a third cavity in the main shaft, and the expanding cutter piston penetrates through a fourth cavity and a fifth cavity in the main shaft.

Optionally, the first driving part further comprises a first spring, and the first spring is installed in the first cavity and located above the tool retracting ring.

Optionally, the first driving part further comprises a second spring, the second spring is located in the fifth cavity, the second spring is wound on the periphery of the expanding knife piston, the diameter of the expanding knife piston at the top end of the second spring is smaller than that at the bottom end of the second spring, and the diameter of the fourth cavity is smaller than that of the fifth cavity.

Optionally, the rolling member comprises: the outer surface of the roller path is a conical surface, the large-caliber end of the roller path faces upwards, the roller path is matched with the roller for use, the outer surface of the roller path is a conical surface, the large-caliber end of the roller path faces downwards, the main shaft is provided with a positioning push ring, the positioning push ring is provided with a pressure bearing and a retainer, the pressure bearing is provided with a wear-resistant ring, and the wear-resistant ring and the retainer are used for installing the roller path.

Optionally, lower connector is installed to the lower extreme of main shaft, be equipped with the seventh cavity in the connector down, the second driver part includes: and the rolling piston is arranged in the seventh cavity, and the connecting rod is connected with the positioning push ring through a screw.

Optionally, the second drive component further comprises: the third spring is located in a sixth cavity in the main shaft and is wound on the periphery of a knife expanding piston, the knife expanding piston penetrates through the sixth cavity, the sixth cavity is communicated with the fifth cavity, the diameter of the sixth cavity is larger than that of the fifth cavity, and the diameter of an inner hole of the return gasket is smaller than that of the sixth cavity.

Optionally, a through hole for installing the lower end of the expanding knife piston is formed in the rolling piston, and the lower end of the expanding knife piston is installed in the through hole in the rolling piston.

Optionally, the top end of the cutter body is provided with a cutter adjusting nut.

The embodiment of the utility model provides an above-mentioned technical scheme, through the expansion and contraction cutter part with first drive disk assembly realize the cutter expand with pack up, realize the return stroke after roll extrusion and roll extrusion finish through rolling part and second drive disk assembly to realized that the boring is scraped and is rolled the integration operation.

Drawings

Fig. 1 is a schematic structural diagram of a boring, scraping and rolling integrated boring head according to an embodiment of the present invention;

fig. 2 is a schematic sectional view of the combination of the expanding and contracting cutter cone block and the cutter body.

Description of the element reference numerals

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used in reference to the drawings, and are not intended to limit the scope of the present invention, but may be modified or adjusted without substantial technical changes.

As shown in fig. 1, a boring, scraping and rolling integrated boring head comprises a main shaft 2, wherein an expansion and contraction cutter component, a first driving component, a rolling component and a second driving component are mounted on the main shaft, and the first driving component is used for driving the expansion and contraction cutter component so as to realize expansion and retraction of a cutter block; the second driving part is used for driving the rolling part so as to realize rolling and return stroke after rolling.

The utility model discloses embodiment provides a technical scheme realizes the expansion of cutter and packs up through the harmomegathus cutter part with first driver part, realizes the return stroke after roll extrusion and the roll extrusion finishes through rolling part and second driver part to realized that the boring is scraped and is rolled the integration operation.

In one embodiment, as shown in fig. 2, the collapsible cutter member includes: the tool comprises an expansion and contraction tool conical block 5 and a tool body 1 sleeved on the main shaft, wherein a fine tool block 4 and a coarse tool block 6 are mounted on the tool body, and the expansion and contraction tool conical block 5 drives the fine tool block 4 to expand and retract when moving up and down. The rough cutter block and the fine cutter block are respectively provided with corresponding blades which are respectively used for realizing rough boring and fine boring/fine scraping.

As shown in fig. 1, in one embodiment, the first driving member includes a knife expanding push rod 8, a knife expanding piston 11; the top end of the expanding cutter push rod 8 is provided with a cutter withdrawing ring 7, and the expanding cutter push rod 8 is also provided with the expanding and contracting cutter conical block 5. The cutter withdrawing ring 7 is sleeved at the top end of the cutter expanding push rod 8, the cutter expanding and contracting conical block 5 is sleeved on the cutter expanding push rod 8, the cutter expanding and contracting conical block 5 and the cutter withdrawing ring 7 move synchronously in the axial direction, the axial direction is the axial direction of the cutter expanding push rod 8 or the cutter withdrawing ring 7, and the cutter expanding push rod 8 and the cutter withdrawing ring 7 are coaxial. The upper end surface and the lower end surface of the expansion and contraction cutter conical block 5 are both rectangular end surfaces, and the side length of the upper end surface is smaller than that of the lower end surface in the direction parallel to the expansion direction of the fine cutter block. The expanding and contracting cutter conical block 5 is provided with a through hole, and the expanding cutter push rod 8 penetrates through the expanding and contracting cutter conical block 5 through the through hole. A first cavity 23 is arranged in the cutter body 1, the cutter retracting ring 7 is positioned in the first cavity 23 in the cutter body, a cutter expanding push rod 8 sequentially penetrates through the expanding and contracting cutter conical block 5 and the second cavity 24 in the spindle and then extends into a third cavity 25 in the spindle, a cutter expanding piston 11 penetrates through a fourth cavity 26 and a fifth cavity 27 in the spindle, the diameter of the second cavity 24 is larger than that of the third cavity 25, the diameter of the third cavity 25 is smaller than that of the fourth cavity 26, the first cavity 23, the second cavity 24, the third cavity 25, the fourth cavity 26 and the fifth cavity 27 are sequentially communicated and are cylindrical cavities, wherein the first cavity 23 is arranged in the cutter body 1, and the second cavity 24, the third cavity 25, the fourth cavity 26 and the fifth cavity 27 are arranged in the spindle 2; the communication means that the first cavity 23 is communicated with the second cavity 24, and the second cavity 24, the third cavity 25, the fourth cavity 26 and the fifth cavity 27 are communicated in sequence after the cutter body 1 is mounted on the main shaft 2.

The expanding cutter push rod pushes the expanding and contracting cutter conical block to move upwards, and the expanding and contracting cutter conical block is designed to be small in top and large in bottom, so that the expanding and contracting cutter conical block can extrude the fine cutter block outwards while moving upwards, and the fine cutter block is expanded to start fine scraping.

In one embodiment, the first driving member further includes a first spring 9, and the first spring 9 is installed in the first cavity 23, sleeved on the outer periphery of the knife expanding push rod 8, and located above the knife retracting ring 7. When the boring head works, the first spring 9 is in a compressed state. After the cutter retreating is finished, a certain gap is reserved between the top end of the cutter expanding push rod 8 and the top end of the first cavity.

After the finish scraping, the first spring pushes the cutter withdrawing ring to move downwards, the expanding and contracting cutter conical block also moves downwards along with the expanding and contracting cutter conical block, and the finish cutter block is retracted, so that the cutter withdrawing is realized.

In one embodiment, the first driving member further includes a second spring 13, the second spring is located in the fifth cavity 27, the diameter of the fifth cavity 27 is greater than the diameter of the fourth cavity 26, the second spring 13 is wound around the outer periphery of the expanding knife piston 11, the diameter of the expanding knife piston 11 where the top end of the second spring 13 contacts the expanding knife piston 11 is smaller than the diameter of the expanding knife piston 11 where the bottom end of the second spring 13 contacts the expanding knife piston 11, and when the boring head operates, the second spring 13 is in a compressed state.

The second spring is the supplement of the first spring, the tool retracting pressure of the first spring is relieved, and the tool retracting accuracy is further guaranteed.

In one embodiment, the rolled section comprises: the outer surface of the raceway 20 is a conical surface, the large-caliber end of the raceway 20 faces upwards, the raceway 20 is matched with the roller 21 for use, the outer surface of the roller 21 is a conical surface, the large-caliber end of the roller faces downwards, the main shaft is provided with a positioning push ring 17, the positioning push ring is provided with a pressure bearing 18 and a retainer 16, the pressure bearing is provided with a wear-resisting ring 19, and the wear-resisting ring 19 and the retainer 16 are used for mounting the roller 21.

The outer surface of the roller path is a conical surface with a large caliber upward, the outer surface of the roller is a conical surface with a large caliber downward, and the roller path and the roller are matched for use, so that rolling is realized.

In one embodiment, the lower end of the main shaft 2 is provided with a lower connector 3, a sixth cavity 28 is arranged in the main shaft 2, the expanding knife piston 11 further penetrates through the sixth cavity 28, the sixth cavity 28 is communicated with the fifth cavity 27, the diameter of the sixth cavity 28 is larger than that of the fifth cavity 27, a seventh cavity 29 is arranged in the lower connector 3, and the second driving part includes: the third spring 12 is positioned in the sixth cavity 28 and wound on the periphery of the expanding knife piston 11, the diameter of an inner hole of the return gasket 22 is smaller than that of the sixth cavity 28, the rolling piston 14 is arranged in the seventh cavity 29, and a connecting rod screw 15 sequentially penetrates through holes formed in the return gasket 22 and the main shaft 2 and is mounted on the positioning push ring 17. A through hole for installing the lower end of the expanding knife piston 11 is formed in the rolling piston 14, and the lower end of the expanding knife piston 11 is installed in the through hole in the rolling piston 14.

The roller is pushed to move forwards by the aid of the rolling piston, rolling is achieved, return stroke of the rolling piston is achieved by the aid of the third spring, and the rolling piston is simple in structure and low in cost.

In one embodiment, an oil path 30 is further disposed in the lower connector 3, and the oil path 30 is communicated with the seventh cavity and used for flowing hydraulic oil to drive the rolling piston and the expanding knife piston.

The oil circuit is used for flowing hydraulic oil, and the rolling piston and the expanding knife piston are driven by the hydraulic oil, so that the boring scraping roller is realized.

In one embodiment, the top end of the cutter body 1 is provided with a cutter adjusting nut 10 for adjusting a gap between the top end of the cutter expanding push rod and the cutter adjusting nut so as to meet production requirements.

The utility model mainly comprises a rough boring cutter, a fine boring cutter and a rolling cutter. The diameter of the cutter can be precisely adjusted and the cutter can be automatically expanded and contracted. The boring head is based on a main shaft 2 and is connected with a cutter body 1 and a lower connector 3 through screw threads. The return washer 22 is connected with the positioning push ring 17 through the connecting rod screw 15. The retainer 16, the pressure bearing 18, the wear-resistant ring 19, the raceway 20, the roller 21, the rolling piston 14 and the third spring 12 are sleeved upwards to form a rolling part of the boring head.

The fine cutter block 4 and the expanding and contracting cutter cone block 5 are hooked into a whole to be embedded above the cutter body and mounted on the cutter body, and the expanding cutter push rod 8 penetrates through the middle of the cutter body. The upper part of the knife expanding push rod 8 is sleeved with a knife withdrawing ring 7 and a first spring 9 and is fixed by a knife adjusting nut 10. The 4 rough cutter blocks are circumferentially embedded above the cutter body, and the lower cutter expanding piston 11 and the second spring 13 are positioned in the main shaft 2. The above constitutes the boring cutter portion of the boring head.

The boring head works in a propulsion mode, and boring, scraping and rolling are carried out simultaneously. Because the expanding and contracting cutter cone block has the taper of the big head and the small head, the expanding and contracting cutter cone block and the fine cutter block form an expanding and contracting cutter device which can advance and retract the expanding cutter. The expanding cutter push rod penetrates through the center, and drives the expanding and contracting stacking block to slide back and forth under the alternate action of hydraulic pressure and a return spring, so that the automatic expanding and retracting cutter is realized.

The gap between the knife expanding push rod 8 and the knife adjusting nut 10 can be adjusted by rotating the knife adjusting nut 10. The position of the cutter adjusting nut 10 defines the position of the expansion and contraction cutter cone block 5 and also determines the size of the rotary machining diameter of the cutter. When the expanding and contracting cutter cone block 5 moves upwards, the fine cutter block 4 expands outwards, and the processing size is enlarged. And conversely, the processing size is reduced. Thereby realizing precise knife adjustment.

When the rolling device works, the rotating diameter size of the cutter point of the boring cutter is firstly adjusted, then the hydraulic pressure is adjusted, the roller 21 is in the final position after being opened so as to meet the machining requirement, the rolling radius of the roller 21 is 0.01mm-0.1mm larger than the cutting radius of the cutter point of the boring cutter, and a certain interference is generated to achieve the rolling effect.

Initial state, hydraulic oil is injected. The expanding knife piston 11 is pushed to move upwards, the expanding knife piston 11 pushes the expanding knife push rod 8, the expanding knife push rod 8 drives the expanding knife conical block 5 to push upwards together, the two outward sides of the fine knife block 4 expand, and the blade is in a processing state.

At the same time, the rolling piston 14 moves upward, pushing the connecting rod screw 15, and the retainer 16, the positioning push ring 17, the pressure bearing 18, the wear-resistant ring 19, and the roller 21 are moved forward together by the connecting rod screw 15. Due to the upward taper of the raceway 20, the rollers 21 moving upward will flare outward and the rolling area will be in a machined condition.

And when the work is finished, the hydraulic oil is discharged. The first elastic block 9 rebounds, the expansion cutter conical block 5 moves downwards, and the fine cutter block 4 is retracted. The second elastic yellow 13 rebounds to drive the expanding knife piston 11 to move backwards and retreat to the initial state.

The third spring 12 springs back, pushing the return washer 15 downwards. The return washer 22 pulls the connecting rod screw 15 and drives the retainer 16, the positioning push ring 17, the pressure bearing 18, the wear-resistant ring 19 and the roller 21 to move backwards. The roller 21 retracts. The boring head can smoothly exit from the workpiece.

The utility model has the advantages of it is following:

1. the boring cutter is precise and adjustable, and the product quality is effectively improved.

2. The automatic expansion and contraction knife is convenient to operate.

3. The boring, scraping and rolling are organically combined, so that the operation process is greatly simplified.

The utility model discloses scrape the boring and roll organically combine in an organic whole. The precise cutter adjusting system is designed, the advantages of adjustable machining precision and automatic cutter expansion and contraction are achieved, and machining efficiency can be obviously improved in the actual machining process.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The boring, scraping and rolling integrated boring head is characterized by comprising a main shaft, wherein an expansion and contraction cutter component, a first driving component, a rolling component and a second driving component are mounted on the main shaft, and the first driving component is used for driving the expansion and contraction cutter component so as to realize expansion and retraction of a cutter block; the second driving part is used for driving the rolling part so as to realize rolling and return stroke after rolling.

2. The boring, scraping and rolling integrated boring head as claimed in claim 1, wherein the collapsible cutter member comprises: the tool comprises an expansion and contraction tool conical block and a tool body sleeved on the main shaft, wherein a fine tool block is arranged on the tool body, and the expansion and contraction tool conical block drives the fine tool block to expand and retract when moving up and down.

3. The boring, scraping and rolling integrated boring head as claimed in claim 2, wherein the first driving part comprises a cutter expanding push rod and a cutter expanding piston; the upper part of the expanding cutter push rod is provided with a cutter withdrawing ring, the expanding cutter push rod is further provided with an expanding cutter conical block, the expanding cutter push rod, the expanding cutter conical block and the cutter withdrawing ring move synchronously in the axial direction, the cutter withdrawing ring is positioned in a first cavity in the cutter body, the expanding cutter push rod is positioned in a second cavity and a third cavity in the main shaft, and the expanding cutter piston penetrates through a fourth cavity and a fifth cavity in the main shaft.

4. The boring, scraping and rolling integrated boring head of claim 3, wherein the first drive member further comprises a first spring mounted in the first cavity above the tool retracting ring.

5. The boring, scraping and rolling integrated boring head of claim 3, wherein the first driving component further comprises a second spring, the second spring is located in the fifth cavity and wound on the periphery of the expanding knife piston, the diameter of the expanding knife piston at the top end of the second spring is smaller than that at the bottom end of the second spring, and the diameter of the fourth cavity is smaller than that of the fifth cavity.

6. The boring, scraping and rolling integrated boring head as claimed in any one of claims 3 to 5, wherein the rolling member comprises: the outer surface of the roller path is a conical surface, the large-caliber end of the roller path faces upwards, the roller path is matched with the roller for use, the outer surface of the roller path is a conical surface, the large-caliber end of the roller path faces downwards, the main shaft is provided with a positioning push ring, the positioning push ring is provided with a pressure bearing and a retainer, the pressure bearing is provided with a wear-resistant ring, and the wear-resistant ring and the retainer are used for installing the roller path.

7. The boring, scraping and rolling integrated boring head as claimed in claim 6, wherein the lower end of the main shaft is provided with a lower connector, a seventh cavity is arranged in the lower connector, and the second driving part comprises: and the rolling piston is arranged in the seventh cavity, and the connecting rod is connected with the positioning push ring through a screw.

8. The boring, scraping and rolling integrated boring head of claim 7, wherein the second drive member further comprises: the third spring is located in a sixth cavity in the main shaft and is wound on the periphery of a knife expanding piston, the knife expanding piston penetrates through the sixth cavity, the sixth cavity is communicated with the fifth cavity, the diameter of the sixth cavity is larger than that of the fifth cavity, and the diameter of an inner hole of the return gasket is smaller than that of the sixth cavity.

9. The boring, scraping and rolling integrated boring head as claimed in claim 7, wherein the rolling piston is provided with a through hole for mounting the lower end of the expanding cutter piston, and the lower end of the expanding cutter piston is mounted in the through hole in the rolling piston.

10. The boring, scraping and rolling integrated boring head as claimed in claim 2, wherein the top end of the cutter body is provided with a cutter adjusting nut.