CN113714812B - Adjustable boring and rolling compound tool - Google Patents

Abstract

The present invention relates to an adjustable boring-rolling composite tool, for example, comprising: a base, a hydraulic adjustment mechanism, a rolling mechanism and a cutting mechanism, the base includes: a base and a stepped shaft arranged at one end of the base; a rolling mechanism, A cutting mechanism is sleeved on the stepped shaft and connected to the stepped shaft; a cutting mechanism is sleeved on the stepped shaft and connected to the stepped shaft, and the rolling mechanism is located between the cutting mechanism and the base. The adjustable boring-rolling composite tool disclosed in the embodiment of the present invention can realize the precision adjustment of the rolling mechanism and the cutting mechanism, reduce errors, improve the machining accuracy and efficiency, and can ensure the machining straightness and coaxiality, and improve the user experience. .

Description

Adjustable boring and rolling compound tool

technical field

The invention relates to the technical field of composite tools for deep hole machining, in particular to an adjustable boring-rolling composite tool.

Background technique

Deep hole machining technology is widely used in many occasions of machining, and has high requirements on the quality of the machined surface. The scraping-rolling composite tool is an extremely efficient processing method in the deep hole processing method. It is mainly used in the processing of deep holes such as the inner hole of the hydraulic cylinder of construction machinery, the inner hole of the aero-engine drive shaft, and the inner hole of the gun barrel. The scraping-rolling composite tool is also called boring and rolling head and scraping-rolling head. Due to the high technical requirements of deep hole processing, the scraping-rolling composite tool is boring and rolling at the same time, with high processing efficiency, integrated processing, and no multiple times. The positioning error of the clamping, the surface roughness of the machined hole is good, and the corrosion resistance, wear resistance and fatigue resistance are high, but the domestic tools have the characteristics of insufficient design precision, difficult adjustment of machining accuracy, large error, poor structural rigidity, straight line However, the cost of foreign imports is too high and the procurement cycle is long.

Therefore, designing an adjustable boring-rolling composite tool that avoids some of the deficiencies or defects existing in the related art is an urgent problem to be solved at present.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an adjustable boring-rolling compound tool in view of the defects and deficiencies of the prior art. Through the specific structural design of the adjustable boring-rolling compound tool, the different precision adjustment of the rolling mechanism and the cutting mechanism can be realized. , reduce the machining error, improve the machining accuracy and efficiency of the tool, and ensure the machining straightness and improve the user experience.

Specifically, an embodiment of the present invention discloses an adjustable boring-rolling composite tool, comprising: a base, including: a base and a stepped shaft disposed at one end of the base, the base is provided with an axial inner hole of the base, the The stepped shaft is provided with a stepped shaft inner hole that communicates with the axial inner hole of the base, and the stepped shaft comprises: a first stepped shaft, a second stepped shaft and a third stepped shaft connected in sequence, the first stepped shaft The stepped shaft is connected to the base, wherein the stepped shaft is provided with a sliding keyway along the axial direction; the hydraulic adjustment mechanism is located in the axial inner hole of the base, and includes: a cylinder head, which is provided with an oil inlet port; a piston rod , including the opposite first end of the piston rod and the second end of the piston rod, the first end of the piston rod is connected to the cylinder cover; the piston rod is provided with a piston rod inner cavity, and the piston rod inner cavity is connected to the an oil inlet port; a cylinder tube sleeved on the first end of the piston rod and forming a cylinder tube inner cavity with the piston rod, the cylinder tube inner cavity communicating with the piston rod inner cavity; a sealing ring, the piston rod The first end is connected to the cylinder head through the sealing ring; an adjusting elastic member is sleeved on the second end of the piston rod, and one end of the adjusting elastic member adjacent to the cylinder head abuts the cylinder barrel; A pin sleeve is located in the inner hole of the stepped shaft and includes a first end of the pin sleeve and a second end of the pin sleeve opposite, the first end of the pin sleeve is connected to the second end of the piston rod, and the pin The second end of the sleeve is provided with a first pin hole, wherein the other end of the adjusting elastic member abuts the first end of the pin sleeve; and a pin passes through the first pin hole, wherein the first stepped shaft A second pin hole is provided on the top corresponding to the pin; the connecting shaft includes a first end of the connecting shaft and a second end of the connecting shaft, wherein the first end of the connecting shaft is located at the first end of the hydraulic adjustment mechanism. In the pin hole, the pin penetrates the first end of the connecting shaft through the first pin hole, and the second end of the connecting shaft is connected to the first end of the adjusting rod of the cutting mechanism; the rolling mechanism is sleeved is connected to the second stepped shaft, and includes: a sliding key, one end of which is provided with a sliding key hole corresponding to the pin, the pin penetrates the second pin hole and the sliding key hole, and the sliding key is provided with In the sliding keyway; the raceway includes: the opposite first end of the raceway and the second end of the raceway, and the opposite outer cone surface of the raceway and the inner hole surface of the raceway, the diameter of the first end of the raceway is smaller than the diameter of the raceway The diameter of the second end of the raceway, the raceway is sleeved on the third stepped shaft through the inner hole surface of the raceway, the inner hole surface of the raceway is provided with a slideway groove, and the sliding key is also provided In the slideway groove and the sliding key is in an interference fit with the slideway groove; a roller bracket is sleeved on the raceway, and a roller accommodating groove is arranged on the roller bracket; the roller, The roller is arranged in the roller accommodating groove and includes a first end of the roller and a second end of the roller, the diameter of the first end of the roller is larger than the diameter of the second end of the roller, and the first end of the roller is One end is disposed adjacent to the first end of the raceway, the second end of the roller is disposed adjacent to the second end of the raceway, the roller also has an outer cone surface of the roller, and the outer cone surface of the roller abuts Rolling and sliding on the outer conical surface of the raceway and relative to the outer conical surface of the raceway a bearing, sleeved on the second stepped shaft and adjacent to the first stepped shaft; a chuck, sleeved on the second stepped shaft and located at a position where the bearing is far from the first stepped shaft side; a bearing sleeve sleeved on the bearing, the chuck and the first stepped shaft, the end of the bearing sleeve away from the cutting mechanism abuts on the base; an adjusting sleeve , sleeved on the bearing sleeve and threadedly connected with the bearing sleeve, the adjustment sleeve is provided with an outer cylindrical surface, and an adjustment bracket is arranged on the outer cylindrical surface, and the adjustment bracket abuts on the one end of the roller bracket adjacent to the base; a cutting mechanism sleeved and connected to the third stepped shaft, wherein the rolling mechanism is located between the cutting mechanism and the base, and the cutting mechanism includes : Adjusting rod, including the first end of the adjusting rod and the second end of the adjusting rod, the second end of the connecting shaft is connected to the first end of the adjusting rod; the boring roller head is provided with an axial inner hole of the boring roller head, so The boring roller head is sleeved on the stepped shaft through the axial inner hole of the boring roller head and is connected to the stepped shaft, and the boring roller head has precision grooves arranged along the radial direction of the boring roller head. The boring holder channel, the boring roller head is also provided with an inclined threaded through hole, the adjustment rod is located in the axial inner hole of the boring roller head; the middle wedge is provided with a threaded middle hole, and the adjustment rod It penetrates through the threaded middle hole and can be rotated relative to the middle wedge block through the threaded middle hole, wherein the side surface of the middle wedge block is provided with an inclined chute; the fine boring tool holder is provided with a fine boring blade at one end. , the fine boring tool holder is arranged in the fine boring tool holder channel, and the end of the fine boring tool holder away from the fine boring blade is clamped in the inclined chute of the middle wedge block, The fine boring tool holder is also provided with an inclined blind hole, and the inclined blind hole corresponds to the inclined thread through hole; the reset elastic member is arranged in the inclined blind hole; the fixing member is arranged in the inclined thread The through hole is threadedly connected with the inclined threaded through hole, the fixing piece abuts the reset elastic piece; the adjusting cover is connected to the second end of the adjusting rod and is located in the axial inner hole of the boring roller head .

Another embodiment of the present invention discloses an adjustable boring-rolling composite tool, comprising: a base, including: a base and a stepped shaft disposed at one end of the base; a rolling mechanism sleeved on the stepped shaft and connecting the stepped shaft; a cutting mechanism sleeved on the stepped shaft and connected to the stepped shaft, the rolling mechanism is located between the cutting mechanism and the base; wherein the cutting mechanism comprises: adjusting The rod includes the first end of the adjustment rod and the second end of the adjustment rod; the boring head is provided with an axial inner hole of the boring head, and the boring head is sleeved at the position through the axial inner hole of the boring head. On the stepped shaft and connected to the stepped shaft, the boring roller head has a fine boring tool holder channel arranged along the radial direction of the boring roller head, and the boring roller head is also provided with an inclined thread through hole , the adjustment rod is located in the axial inner hole of the boring roller; the middle wedge is provided with a threaded middle hole, the adjustment rod passes through the threaded middle hole, and can pass through the threaded middle hole relative to the The middle wedge is rotated, wherein the side of the middle wedge is provided with an inclined chute; the fine boring tool holder is provided with a fine boring blade at one end, and the fine boring tool holder is arranged in the channel of the fine boring tool holder, And the end of the fine boring tool holder that is far away from the fine boring blade is clamped in the inclined chute of the middle wedge block, and the fine boring tool holder is also provided with an inclined blind hole. The hole corresponds to the inclined threaded through hole; the reset elastic piece is arranged in the inclined blind hole; the fixing piece is arranged in the inclined threaded through hole and is threadedly connected with the inclined threaded through hole, the fixing piece is The adjusting cover is connected to the second end of the adjusting rod and is located in the axial inner hole of the boring roller.

In an embodiment of the present invention, the adjustable boring-rolling composite tool further includes: a hydraulic adjustment mechanism and a connecting shaft; the base is provided with a base axial inner hole, and the stepped shaft is provided with a base shaft connected to the base shaft. The inner hole of the stepped shaft communicated with the inner hole; the hydraulic adjustment mechanism is located in the axial inner hole of the base, and includes: a cylinder head, which is provided with an oil inlet port; a piston rod, including the opposite first end of the piston rod and the second end of the piston rod, the first end of the piston rod is connected to the cylinder cover; the piston rod is provided with a piston rod inner cavity, and the piston rod inner cavity is connected to the oil inlet port; the cylinder barrel is sleeved with A cylinder inner cavity is formed at the first end of the piston rod and with the piston rod, and the inner cavity of the cylinder cylinder communicates with the inner cavity of the piston rod; an adjusting elastic member is sleeved on the second end of the piston rod, and one end of the adjusting elastic member adjacent to the cylinder cover abuts the cylinder barrel; the pin sleeve is located in the inner hole of the stepped shaft and includes a first end of the pin sleeve and a second end of the pin sleeve opposite, The first end of the pin sleeve is connected to the second end of the piston rod, the second end of the pin sleeve is provided with a first pin hole, wherein the other end of the adjusting elastic member abuts the first pin sleeve and a pin passing through the first pin hole; the connecting shaft includes a first end of the connecting shaft and a second end of the connecting shaft opposite, wherein the first end of the connecting shaft is located at the position of the hydraulic adjustment mechanism In the first pin hole, the pin penetrates the first end of the connecting shaft through the first pin hole, and the second end of the connecting shaft is connected to the first end of the adjusting rod of the cutting mechanism.

In an embodiment of the present invention, the stepped shaft includes: a first stepped shaft, a second stepped shaft and a third stepped shaft connected in sequence, the first stepped shaft is connected to the base, and the first stepped shaft A second pin hole is provided on the top corresponding to the pin; wherein a sliding key slot is arranged on the stepped shaft along the axial direction; the rolling mechanism further comprises: a sliding key, one end of which is provided with a sliding key hole corresponding to the pin, the pin penetrates the second pin hole and the sliding key hole; the sliding key is arranged in the sliding key groove, and the sliding key and the sliding key groove are in interference fit; the raceway includes: opposite The first end of the raceway, the second end of the raceway, and the opposite outer cone surface of the raceway and the inner hole surface of the raceway, the diameter of the first end of the raceway is smaller than the diameter of the second end of the raceway, and the raceway passes through the The inner hole surface of the raceway is sleeved on the third stepped shaft, and the inner hole surface of the raceway is provided with a chute groove, wherein the sliding key is also arranged in the sliding channel groove and the sliding key is connected with the The slideway groove is in interference fit; the roller bracket is sleeved on the raceway, and the roller bracket is provided with a roller accommodating groove; the roller is arranged in the roller accommodating groove and includes opposite rollers The first end of the roller and the second end of the roller, the diameter of the first end of the roller is larger than the diameter of the second end of the roller, and the first end of the roller is arranged adjacent to the first end of the raceway, the The second end of the roller is disposed adjacent to the second end of the raceway, the roller further has an outer cone surface of the roller, and the outer cone surface of the roller abuts on the outer cone surface of the raceway and can be opposite to the outer cone surface of the roller The outer cone surface of the raceway rolls and slides.

In an embodiment of the present invention, the rolling mechanism further includes: a bearing sleeved on the second stepped shaft and disposed adjacent to the first stepped shaft; a chuck sleeved on the second stepped shaft on the shaft and on the side of the bearing away from the first stepped shaft; a bearing sleeve is sleeved on the bearing, the chuck and the first stepped shaft, and the bearing sleeve is away from the first stepped shaft. One end of the cutting mechanism abuts on the base; an adjusting sleeve is sleeved on the bearing sleeve and is threadedly connected with the bearing sleeve, the adjusting sleeve is provided with an outer cylindrical surface, and the outer An adjustment bracket is arranged on the cylindrical surface, and the adjustment bracket abuts on one end of the roller bracket adjacent to the base.

In one embodiment of the present invention, the roller bracket includes a bracket main body and a bracket end cover, the bracket main body is provided with a roller slot, and the bracket end cover is connected to the roller on the bracket main body. One end of the column slot is formed with the roller slot to form the roller accommodating groove for accommodating the roller; the chuck is provided with a slot, and the chuck is connected with the second Step shaft.

In an embodiment of the present invention, the adjustable boring-rolling composite tool further includes a plurality of first guide blocks; a plurality of first guide grooves are provided on the base, and the plurality of first guide blocks correspond one-to-one arranged in the first guide groove.

In an embodiment of the present invention, a rough boring tool holder groove, a second guide groove and a third guide groove are respectively provided on the boring roller head; the cutting mechanism further includes: a rough boring tool holder, a second guide groove block and a third guide block, the rough boring tool holder is fixed in the rough boring tool holder groove, the second guide block and the third guide block are arranged in a one-to-one correspondence between the second guide groove and the into the third guide groove.

In an embodiment of the present invention, the taper of the outer conical surface of the raceway is the same as the taper of the outer conical surface of the roller.

In an embodiment of the present invention, the taper of the outer conical surface of the raceway and the taper of the outer conical surface of the roller are 1:20.

The above technical solution has the following advantages or beneficial effects: through the specific structural design of the cutting mechanism, for example, by rotating the adjustment cover, the adjustment rod and the middle wedge block are driven to move up and down, so that the fine boring tool holder is based on the boring roller head with the running of the middle wedge block. The fine adjustment of the fine boring tool holder can be realized by expanding outward and retracting inward with the elastic force of the return elastic member based on the boring roller head; through the specific structural design of the hydraulic adjustment mechanism and the connecting shaft, such as oil feeding through the hydraulic adjustment mechanism And the oil is discharged, and the connecting shaft is driven to pull or push the adjustment rod, so that the fine boring tool holder will expand outward based on the boring roller head with the running of the middle wedge or retract inward based on the boring roller head with the elastic force of the reset elastic member. The rough adjustment of the fine boring tool holder can be realized; through the specific structural design of the hydraulic adjustment mechanism and the rolling mechanism, for example, through the oil inlet and outlet of the hydraulic adjustment mechanism, the pin sleeve is driven to pull or push the pin and the feather key based on the boring roller head. It moves up and down in the direction, and the outer cone surface of the raceway and the outer cone surface of the roller slide relatively, and the outer diameter of the rolling mechanism is adjusted to realize the rough adjustment of the rolling mechanism; through the specific structural design of the rolling mechanism, for example, by rotating the adjusting sleeve to push The roller bracket moves the roller upward, that is, the roller moves upward relative to the raceway away from the base, and the appearance diameter of the rolling mechanism is adjusted to realize the fine adjustment of the rolling mechanism; Structure, high coaxiality, high processing straightness, easy disassembly, and improved user experience.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of the overall appearance of an adjustable boring-rolling composite tool provided by an embodiment of the present invention.

FIG. 2 is an overall exploded schematic diagram of an adjustable boring-rolling composite tool provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of the internal structure of an adjustable boring-rolling composite tool provided by an embodiment of the present invention.

FIG. 4 a is a schematic structural diagram of the base of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 4 b is a schematic structural diagram of some components of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 4c is a schematic structural diagram of some components of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 4d is a schematic structural diagram of some components of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 4e is a schematic structural diagram of some components of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 5 is a schematic structural diagram of raceways and rollers of the adjustable boring-rolling composite tool shown in FIG. 2 .

FIG. 6 is a schematic cross-sectional view at A-A of the adjustable boring-rolling composite tool shown in FIG. 3 .

FIG. 7 is a schematic diagram of the internal structure of the rolling adjustment mechanism of the adjustable boring-rolling composite tool shown in FIG. 3 .

FIG. 8 is an example schematic diagram of the adjusting precision of the boring-rolling head of the adjustable boring-rolling composite tool shown in FIG. 3 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, system, product or device comprising a series of steps or units is not necessarily limited to those steps expressly listed or units, but may include other steps or units not expressly listed or inherent to these processes, products or devices.

Referring to FIGS. 1 , 2 and 3 , an adjustable boring-rolling composite tool 100 provided for an embodiment of the present invention includes, for example, a base 10 , a rolling mechanism 20 , a cutting mechanism 30 , a hydraulic adjustment mechanism 40 and a connection Axle 28.

The base 10 includes, for example, a base 11 and a stepped shaft 12 disposed at one end of the base 11 . The rolling mechanism 20 is sleeved on the stepped shaft 12 and connected to the stepped shaft 12 . The cutting mechanism 30 is sleeved on the stepped shaft 12 and connected to the stepped shaft 12 , and the rolling mechanism 20 is located between the cutting mechanism 30 and the base 11 .

4 b and 6 , the cutting mechanism 30 includes, for example, an adjustment rod 36 , a boring roller head 38 , a middle wedge 37 , a fine boring tool holder 34 , a reset elastic member 342 , a fixed member 343 and an adjustment cover 32 .

The adjustment rod 36 includes a first end 361 of the adjustment rod and a second end 362 of the adjustment rod. The boring roller head 38 is provided with an axial inner hole 382 of the boring roller head. The boring roller head 38 is sleeved on the stepped shaft 12 and connected to the stepped shaft 12 through the axial inner hole 382 of the boring roller head. The fine boring tool holder channel 381 is arranged in the radial direction of the roller head 38, the boring roller head 38 is also provided with an inclined thread through hole 383, and the adjusting rod 36 is located in the axial inner hole 382 of the boring roller head. The middle wedge 37 is provided with a threaded middle hole 372 , and the adjusting rod passes through the threaded middle hole 372 and can be rotated relative to the middle wedge 37 through the threaded middle hole 372 . The fine boring tool holder 34 is provided with a fine boring blade 344 at one end, the fine boring tool holder 34 is arranged in the fine boring tool holder channel 381, and the end of the fine boring tool holder 34 away from the fine boring blade 344 is clamped in the middle wedge block In the inclined chute 371 of 37, the fine boring tool holder 34 is also provided with inclined blind holes 341, which correspond to the inclined threaded through holes 383. The restoring elastic member 342 is, for example, a spring, and is disposed in the inclined blind hole 341 . The fixing piece 343 is disposed in the inclined threaded through hole 383 and is threadedly connected with the inclined threaded through hole 383 , and the fixing piece 343 abuts against the reset elastic piece 342 . The adjusting cover 32 is connected to the second end 362 of the adjusting rod and is located in the axial inner hole 382 of the boring roller head.

Specifically, in this embodiment, the fine adjustment of the fine boring tool holder 34 is achieved by rotating the adjustment cover 32 to drive the adjustment rod 36 to rotate. Referring to FIG. 8 , the middle wedge 37 is rotated with the adjustment rod 36 through the threaded hole 372 Screw the connection to drive the middle wedge block 37 to move up and down slowly in the axial inner hole 382 of the boring roller head by means of rotation. The frame 34 expands outwards based on the boring roller head 38 with the running of the middle wedge 37 to realize the tool expansion. On the contrary, the fine boring tool holder 34 retracts inwardly based on the boring roller head 38 with the elastic force of the reset elastic member 342 to realize Shrink the knife.

2 , 5 and 7 , the base 11 is provided with a base axial inner hole 111 , and the stepped shaft 12 is provided with a stepped shaft inner hole 121 communicating with the base axial inner hole 111 . The hydraulic adjustment mechanism 40 is located in the axial inner hole 111 of the base, and includes: a cylinder head 41 , a piston rod 43 , a cylinder barrel 44 , an adjusting elastic member 45 , a pin sleeve 46 and a pin 27 .

Among them, the cylinder head 41 is provided with an oil inlet port. Referring to FIG. 4d , the piston rod 43 includes a first end 431 of the piston rod and a second end 432 of the piston rod. The first end 431 of the piston rod is connected to the cylinder head 41 . The piston rod 43 is provided with a piston rod inner cavity, and the piston rod inner cavity is connected to the oil inlet port. The cylinder 44 is sleeved on the first end 431 of the piston rod and forms a cylinder inner cavity with the piston rod 43 , and the cylinder inner cavity communicates with the inner cavity of the piston rod. The adjusting elastic member 45 is sleeved on the second end 432 of the piston rod, and one end of the adjusting elastic member 45 adjacent to the cylinder head 41 abuts against the cylinder barrel 44 . The pin sleeve 46 is located in the inner hole 121 of the stepped shaft and includes a first end 461 of the pin sleeve and a second end 462 of the pin sleeve. The first end 461 of the pin sleeve is connected to the second end 432 of the piston rod. The pin sleeve The second end 462 is provided with a first pin hole 463 , wherein the other end of the adjusting elastic member 45 abuts against the first end 461 of the pin sleeve. The pin 27 passes through the first pin hole 463 . In addition, the connecting shaft 28 includes a first end 281 of the connecting shaft and a second end 282 of the connecting shaft, wherein the first end 281 of the connecting shaft is located in the first pin hole 463 of the hydraulic adjustment mechanism 40, and the pin 27 passes through the first pin The hole 463 penetrates through the first end 281 of the connecting shaft, and the second end 282 of the connecting shaft is connected to the first end 361 of the adjusting rod of the cutting mechanism 30 .

Referring to FIG. 4e , the second end 282 of the connecting shaft is, for example, a slot, and the first end 361 of the adjusting rod is, for example, a spherical joint to be clipped into the slot of the second end 282 of the connecting shaft.

Specifically, in this embodiment, the rough adjustment of the fine boring tool holder 34 is realized through the oil inlet and outlet of the hydraulic adjustment mechanism 40 in cooperation with the connecting shaft 28 . The continuous inflow of oil into the oil port makes the piston rod 43 move downward in the direction away from the boring roller head 38, and then pull the pin 27, the connecting shaft 28, the adjusting rod 36, the middle wedge 37, and the adjusting cover 32 downward through the pin sleeve 46 Movement, the fine boring tool holder 34 is based on the inclined chute 371 provided on the side of the middle wedge block 37, so that the fine boring tool holder 34 will expand outward based on the boring roller head 38 along with the running of the middle wedge block 37, so as to realize the tool expansion. The cylinder 44 moves up the piston rod 43 toward the direction of the boring roller 38 with the continuous oil discharge from the oil inlet port of the cylinder head 41 , and then pushes the connecting shaft 28 , the adjusting rod 36 and the middle wedge 37 through the pin sleeve 46 . . The adjustment cover 32 moves upward, and the fine boring tool holder 34 is based on the inclined chute 371 of the middle wedge 37, so that the fine boring tool holder 34 retracts inwardly based on the boring roller head 38 along with the elastic force of the reset elastic member 342 to realize the tool retraction .

即可经缸筒44的内腔直径与进油进行计算。In this embodiment, the movement displacement of the piston rod 43 can be calculated according to the oil inlet and oil outlet volumes of the hydraulic adjustment mechanism 40. Specifically, for example, the inner cavity diameter of the cylinder barrel 44 is D, and the oil inlet volume is V, the movement displacement of the piston rod 43 is h, then:

It can be calculated by the diameter of the inner cavity of the cylinder 44 and the oil intake.

Wherein, regarding the calculation of the expansion and contraction displacement S ₁ of the boring roller head 38 for the fine boring holder 34 , the angle between the side surface and the bottom surface of the inclined chute 371 of the middle wedge 37 is θ ₁ , based on the above example The formula for calculating the movement displacement of the piston rod 43 as h is:

4a, the stepped shaft 12 includes, for example, a first stepped shaft 122, a second stepped shaft 123 and a third stepped shaft 124 connected in sequence, the first stepped shaft 122 is connected to the base 11, and the first stepped shaft 122 is provided corresponding to the pin 27 There is a second pin hole 125; wherein the stepped shaft 12 is provided with a sliding key groove 16 along the axial direction. Referring to FIG. 4 c and FIG. 5 , the rolling mechanism 20 also includes, for example, a feather key 271 , a raceway 29 , a roller support 22 , and a roller 24 .

2 , one end of the sliding key 271 is provided with a sliding key hole 2711 corresponding to the pin 27 , and the pin 27 penetrates the second pin hole 125 and the sliding key hole 2711 . The feather key 271 is provided in the feather key slot 16 . The raceway 29 includes: the opposite first end 291 of the raceway and the second end 292 of the raceway, and the opposite outer cone surface 293 of the raceway and the inner hole surface 294 of the raceway. The diameter of the first end 291 of the raceway is smaller than the second end of the raceway The diameter of the end 292, the raceway 29 is sleeved on the third stepped shaft 124 through the raceway inner hole surface 294, and the raceway inner hole surface 294 is provided with a slideway groove 295, wherein the slide key 271 is also arranged in the slideway groove 295 and The sliding key 271 is in an interference fit with the sliding groove 295 . The roller bracket 22 is sleeved on the raceway 29 , and a roller accommodating groove 221 is provided on the roller bracket 22 . The roller 24 is provided in the roller accommodating groove 221 and includes the opposite first end 241 of the roller and the second end 242 of the roller. The diameter of the first end 241 of the roller is larger than the diameter of the second end 241 of the roller, and the roller The first end 241 of the column is disposed adjacent to the first end 291 of the raceway, and the second end 242 of the roller is disposed adjacent to the second end 292 of the raceway. The outer cone surface 293 of the raceway can roll and slide relative to the outer cone surface 293 of the raceway. Here, the sliding key 271 is in an interference fit with the slideway groove 295, and the interference fit can be understood as a tight connection between the two elements after contact, and friction force is generated between the contact surfaces when the elements move relative to each other to transmit torsion or axial direction. force.

Specifically, in this embodiment, the rough adjustment of the rolling mechanism 20 is realized by the oil inlet and outlet of the hydraulic adjustment mechanism 40 . The oil discharge makes the piston rod 43 move up and down based on the boring head 38, and then pulls or pushes the pin 27 and the sliding key 271 through the pin sleeve 46 to move. The sliding key 271 moves up and down together, that is, the raceway 29 moves up and down relative to the roller 24 based on the base 11, and the outer conical surface 293 of the raceway and the outer conical surface 243 of the roller slide relative to each other, and the outer diameter of the rolling mechanism 20 is adjusted to realize rolling. Coarse adjustment of the pressing mechanism 20.

Referring to FIGS. 2 and 4 c , the rolling mechanism 20 further includes, for example, a bearing 25 , a chuck 261 , an adjusting sleeve 21 and a bearing sleeve 26 .

The bearing 25 is sleeved on the second stepped shaft 123 ; the bearing 25 is sleeved on the second stepped shaft 123 and is disposed adjacent to the first stepped shaft 122 . The chuck 261 is sleeved on the second stepped shaft 123 and is located on the side of the bearing 25 away from the first stepped shaft 122 . The bearing sleeve 26 is sleeved on the bearing 25 , the chuck 261 and the first stepped shaft 122 , and the end of the bearing sleeve 26 away from the cutting mechanism 30 abuts on the base 11 . The adjusting sleeve 21 is sleeved on the bearing sleeve 26 and is threadedly connected with the bearing sleeve 26. The adjusting sleeve 21 is provided with an outer cylindrical surface, and an adjusting bracket 211 is provided on the outer cylindrical surface. The adjusting bracket 211 abuts on the roller The bracket 22 is not detachable and is adjacent to one end of the base 11 .

Specifically, in this embodiment, the fine adjustment of the rolling mechanism 20 is accomplished by rotating the adjusting sleeve 21 . Specifically, the adjusting sleeve 21 and the bearing sleeve 26 are connected by a thread, and the thread can It is understood as an adjustment thread, and the adjustment bracket 211 is, for example, an “L”-shaped bracket, and one end of the roller bracket 22 abuts on the adjustment bracket 211 . The column bracket 22 moves up and down with the roller 24, that is, the roller 24 moves up and down relative to the raceway 29 based on the base 11, and the outer cone surface 293 of the raceway and the outer cone surface 243 of the roller slide relative to each other to adjust the appearance diameter of the rolling mechanism 20. , so as to achieve fine adjustment of the rolling mechanism 20 .

Further, the roller bracket 22 includes, for example, a bracket main body 221 and a bracket end cover 23, the bracket main body 221 is provided with a roller notch, and the bracket end cover 23 is connected to one end of the roller notch on the bracket main body 221 to be connected with the roller. The column slots form roller receiving grooves that receive the rollers 24 . The chuck 261 is provided with a notch 2611 , and the chuck 261 is connected to the second stepped shaft 123 through a thread.

Wherein, the bracket end cover 23 is connected to one end of the roller bracket 21 by screws, and restricts the roller 24 in the roller accommodating groove 221 of the roller bracket 21 . The bracket end caps 23 are, for example, two semicircular end caps, the inner diameter and outer diameter of the bracket end caps 23 are consistent with the roller bracket 22 , and are fixed to one end of the roller accommodating groove 221 by screws to limit the roller 24 In the roller accommodating groove 221 , for example, when the roller 24 is disassembled and replaced, the screws for fixing the end cover 23 of the bracket can be unscrewed, so as to facilitate the replacement of the roller 24 . For example, there are multiple notches 2611 provided on the chuck 261, which can facilitate the introduction of lubricant to achieve lubrication and facilitate its disassembly.

Further, the adjustable boring-rolling composite tool 100 further includes a plurality of first guide blocks 14 . The base 11 is provided with a plurality of first guide grooves 141 , and the plurality of first guide blocks 14 are disposed in the first guide grooves 141 in a one-to-one correspondence. The boring head 38 is respectively provided with a rough boring tool holder groove 331 , a second guide groove 311 and a third guide groove 351 . The cutting mechanism 30 further includes: a rough boring tool holder 33, a second guide block 31 and a third guide block 35, the rough boring tool holder 33 is fixed in the rough boring tool holder groove 331, the second guide block 31 and the third guide block 35 They are arranged in the second guide groove 311 and the third guide groove 351 in a one-to-one correspondence.

Wherein, the plurality of first guide blocks 14 are, for example, guide blocks of plastic material, which are uniformly arranged on the base 11 in the circumferential direction to play a supporting and guiding role. The second guide block 31 is, for example, a guide block made of alloy material, which is evenly arranged on the boring roller head 38 in the circumferential direction, which not only plays a guiding role, but also can bear wear. Under the support of the second guide block 31, further wear of the composite tool as a whole can be avoided. The third guide block 35 is, for example, a guide block made of plastic material, and is uniformly arranged on the boring head 38 in the circumferential direction to play a guiding role to ensure processing straightness and coaxiality.

Further, the taper of the outer taper surface 293 of the raceway is the same as the taper of the outer taper surface of the roller 243 , and the taper of the outer taper surface 293 of the raceway and the taper of the outer taper surface of the roller 243 are 1:20.

由于滑道29与滚柱24的结构设置的可理解为一正一倒设置，其滚柱外锥面243与滚道外锥面293相抵接其所呈角度为互补角度。Wherein, the angle θ2 between the raceway outer tapered surface 293 and the plane of the _second end 292 of the raceway can be calculated based on the taper of the raceway outer tapered surface 293 and the roller outer tapered surface 243 being 1:20. _The angle θ2 is:

Since the structural arrangement of the slideway 29 and the rollers 24 can be understood as a positive and a reverse arrangement, the roller outer tapered surface 243 and the raceway outer tapered surface 293 abut at a complementary angle.

Here, regarding the calculation of the radial displacement S ₂ of the roller 24, based on the calculation formula of the movement displacement h of the piston rod 43 in the above example, there are:

Further, the hydraulic assembly 40 further includes, for example, a sealing ring 42 , and the first end 431 of the piston rod is connected to the oil inlet port through the sealing ring 42 .

The sealing ring 42 is, for example, a rubber sealing ring, which is used for sealing and preventing leakage of hydraulic oil.

Referring to FIGS. 4 a and 4 d , for example, there are two sliding keys 271 , and two sliding key grooves 16 are provided on the stepped shaft 12 corresponding to the two sliding keys 271 . The third stepped shaft 124 is provided with a semicircular key 17, and the semicircular key 17 is disposed at one end of any one of the two sliding key grooves 16 relative to the base 11, wherein the boring roller head 38 is sleeved on the semicircular key 17 to limit the boring and rolling Circumferential rotation of the head 38 .

The two sliding keys 271 are arranged opposite each other and are connected through the pins 27 . During the precision adjustment operation, the two sliding keys 271 are driven by the pins 27 to slide in the sliding key grooves 16 synchronously.

To sum up, the adjustable boring-rolling composite tool disclosed in this embodiment drives the adjustment rod and the middle wedge to move up and down through the specific structural design of the cutting mechanism, for example, by rotating the adjustment cover, so that the fine boring tool holder follows the middle wedge. The extrusion of the block is based on the outward expansion of the boring roller head and the inward retraction of the boring roller head based on the elastic force of the reset elastic member, which can realize the fine adjustment of the fine boring tool holder; through the specific structural design of the hydraulic adjustment mechanism and the connecting shaft, such as Through the oil input and output of the hydraulic adjustment mechanism, the connecting shaft is driven to pull or push the adjustment rod, so that the fine boring tool holder will expand outward with the running of the middle wedge based on the boring roller head and with the elastic force of the reset elastic piece based on the boring The roller head is retracted inward, which can realize the rough adjustment of the fine boring tool holder; through the specific structural design of the hydraulic adjustment mechanism and the rolling mechanism, for example, through the oil input of the hydraulic adjustment mechanism, the pin sleeve is driven to pull or push the pins and feather keys based on The direction of the boring and rolling head moves up and down, the outer cone surface of the raceway slides relatively with the outer cone surface of the roller, and the outer diameter of the rolling mechanism is adjusted to realize the rough adjustment of the rolling mechanism 20; through the specific structural design of the rolling mechanism, for example, by The rotating adjusting sleeve pushes the roller support to move upward with the roller, that is, the roller moves upward relative to the raceway away from the base, and adjusts the appearance diameter of the rolling mechanism to realize the precise adjustment of the rolling mechanism; in addition, through the end cover of the support The specific structural design can realize the detachability of the rollers, facilitate the replacement of the rollers, and the specific structural design of the cutting mechanism and the rolling mechanism, so that the overall structure is easy to disassemble; in addition, the overall structure of the adjustable boring-rolling composite tool , The coaxiality is high, which makes the processing straightness high and improves the user's experience.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present invention.

Claims (12)

1. an adjustable boring-rolling compound tool, is characterized in that, comprises: A base (10), comprising: a base (11) and a stepped shaft (12) arranged at one end of the base (11), the base (11) is provided with a base axial inner hole (111), the stepped shaft (12) is provided with a stepped shaft inner hole (121) that communicates with the base axial inner hole (111), and the stepped shaft (12) includes: a first stepped shaft (122), a second stepped shaft (122) and a second stepped shaft (122) connected in sequence. A stepped shaft (123) and a third stepped shaft (124), the first stepped shaft (122) is connected to the base (11), wherein the stepped shaft (12) is provided with a sliding key groove (16) along the axial direction ); The hydraulic adjustment mechanism (40) is located in the axial inner hole (111) of the base, and includes: The cylinder head (41) is provided with an oil inlet port; A piston rod (43), comprising a first end (431) of a piston rod and a second end (432) of a piston rod, wherein the first end (431) of the piston rod is connected to the cylinder head (41); the piston rod (43) is provided with a piston rod inner cavity, and the piston rod inner cavity communicates with the oil inlet port; a cylinder (44) sleeved on the first end of the piston rod (431) and forming a cylinder inner cavity with the piston rod (43), the cylinder inner cavity being communicated with the piston rod inner cavity; a sealing ring (42), the first end (431) of the piston rod is connected to the cylinder head (41) through the sealing ring (42); An adjusting elastic member (45) is sleeved on the second end (432) of the piston rod, and one end of the adjusting elastic member (45) adjacent to the cylinder cover (41) abuts against the cylinder barrel (44) ; A pin sleeve (46) is located in the stepped shaft inner hole (121) and includes an opposite first end (461) and a second end (462) of the pin sleeve, the first end of the pin sleeve (461) is connected to the second end of the piston rod (432), the second end of the pin sleeve (462) is provided with a first pin hole (463), wherein the other end of the adjusting elastic member (45) abuts the pin sleeve first end (461); and a pin (27) passing through the first pin hole (463), wherein the first stepped shaft (122) is provided with a second pin hole (125) corresponding to the pin (27); The connecting shaft (28) includes a first end (281) of the opposite connecting shaft and a second end (282) of the connecting shaft, wherein the first end (281) of the connecting shaft is located at all positions of the hydraulic adjustment mechanism (40). In the first pin hole (463), the pin (27) penetrates the first end (281) of the connecting shaft through the first pin hole (463); The rolling mechanism (20) is sleeved and connected to the second stepped shaft (123), and includes: A sliding key (271), one end of which is provided with a sliding key hole (2711) corresponding to the pin (27), and the pin (27) penetrates the second pin hole (125) and the sliding key hole (2711), The sliding key (271) is arranged in the sliding key groove (16), and the sliding key (271) is in an interference fit with the sliding key groove (16); The raceway (29) includes: the opposite first end (291) and the second end (292) of the raceway, and the opposite outer cone surface (293) of the raceway and the inner hole surface (294) of the raceway, the raceway The diameter of the first end (291) of the raceway is smaller than the diameter of the second end (292) of the raceway, and the raceway (29) is sleeved on the third stepped shaft (294) through the inner hole surface of the raceway (294). 124), the inner hole surface of the raceway (294) is provided with a slideway groove (295), wherein the sliding key (271) is also set in the slideway groove (295) and the sliding key (271) ) is an interference fit with the chute groove (295); A roller support (22) is sleeved on the raceway (29), and a roller accommodating groove (221) is provided on the roller support (22); A roller (24) is arranged in the roller accommodating groove (221) and includes a first roller end (241) and a second roller end (242) opposite to each other, the roller first end (241) The diameter of the roller is larger than the diameter of the second end of the roller (242), and the first end of the roller (241) is disposed adjacent to the first end of the raceway (291), and the second end of the roller (242) Provided adjacent to the second end (292) of the raceway, the roller (24) further has a roller outer conical surface (243), and the roller outer conical surface (243) abuts against the raceway outer conical surface (293) and can roll and slide relative to the outer conical surface of the raceway (293); a bearing (25) sleeved on the second stepped shaft (123) and disposed adjacent to the first stepped shaft (122); a chuck (261) sleeved on the second stepped shaft (123) and located on the side of the bearing (25) away from the first stepped shaft (122); a bearing sleeve (26) sleeved on the bearing (25), the chuck (261) and the first stepped shaft (122); An adjusting sleeve (21) is sleeved on the bearing sleeve (26) and is threadedly connected with the bearing sleeve (26), the adjusting sleeve (21) is provided with an outer cylindrical surface, and the outer cylindrical An adjustment bracket (211) is provided on the surface, and the adjustment bracket (211) abuts on one end of the roller bracket (22) adjacent to the base (11); A cutting mechanism (30) sleeved and connected to the third stepped shaft (124), wherein the rolling mechanism (20) is located between the cutting mechanism (30) and the base (11), and the The end of the bearing sleeve (26) away from the cutting mechanism (30) abuts on the base (11), and the cutting mechanism (30) comprises: an adjusting rod (36), comprising a first end (361) of the adjusting rod and a second end (362) of the adjusting rod, the second end (282) of the connecting shaft is connected to the first end (361) of the adjusting rod; The boring roller head (38) is provided with an axial inner hole (382) of the boring roller head, and the boring roller head (38) is sleeved on the stepped shaft (12) through the axial inner hole (382) of the boring roller head ) and connected to the stepped shaft (12), the boring head (38) has a fine boring tool holder channel (381) arranged along the radial direction of the boring head (38), the boring head (38) The roller head (38) is also provided with an inclined threaded through hole (383), and the adjustment rod (36) is located in the axial inner hole (382) of the boring roller head; The middle wedge (37) is provided with a threaded middle hole (372), the adjustment rod passes through the threaded middle hole (372), and can be rotated relative to the middle wedge (37) through the threaded middle hole, Wherein the side surface of the middle wedge (37) is provided with an inclined chute (371); A fine boring tool holder (34), one end of which is provided with a fine boring blade (344), the fine boring tool holder (34) is arranged in the fine boring tool holder channel (381), and the fine boring tool holder ( 34) The end away from the fine boring blade (344) is clamped in the inclined chute (371) of the middle wedge (37), and the fine boring holder (34) is also provided with an inclined groove a blind hole (341), the inclined blind hole (341) corresponds to the inclined threaded through hole (383); A reset elastic member (342), disposed in the inclined blind hole (341); A fixing piece (343) is disposed in the inclined threaded through hole (383) and is threadedly connected with the inclined threaded through hole (383), the fixing piece (343) abuts the reset elastic piece (342) ; The adjusting cover (32) is connected to the second end (362) of the adjusting rod and is located in the axial inner hole (382) of the boring roller head. 2. The adjustable boring-rolling composite tool according to claim 1, wherein the adjustable boring-rolling composite tool (100) further comprises a plurality of first guide blocks (14); The base (11) is provided with a plurality of first guide grooves (141), and the plurality of first guide blocks (14) are disposed in the first guide grooves (141) in a one-to-one correspondence. 3. The adjustable boring-rolling composite tool according to claim 1, wherein the boring-rolling head (38) is respectively provided with a rough boring tool holder groove (331), a second guide groove (311) and the third guide groove (351); The cutting mechanism (30) further comprises: a rough boring tool holder (33), a second guide block (31) and a third guide block (35), the rough boring tool holder (33) is fixed on the rough boring tool In the frame groove (331), the second guide block (31) and the third guide block (35) are arranged in the second guide groove (311) and the third guide groove (351) in a one-to-one correspondence Inside. 4 . The adjustable boring-rolling compound tool according to claim 1 , wherein the taper of the outer cone surface of the raceway ( 293 ) is the same as that of the outer cone surface of the roller ( 243 ). 5 . 5 . The adjustable boring-rolling composite tool according to claim 4 , wherein the taper of the outer taper surface of the raceway ( 293 ) and the taper of the outer taper surface of the rollers ( 243 ) are 1:20. 6 . 6. An adjustable boring-rolling composite tool, characterized in that, comprising: A base (10), comprising: a base (11) and a stepped shaft (12) disposed at one end of the base (11); a rolling mechanism (20) sleeved on the stepped shaft (12) and connected to the stepped shaft (12); A cutting mechanism (30) is sleeved on the stepped shaft (12) and connected to the stepped shaft (12), and the rolling mechanism (20) is located between the cutting mechanism (30) and the base (11) between; Wherein, the cutting mechanism (30) includes: an adjusting rod (36), comprising a first end (361) of the opposite adjusting rod and a second end (362) of the adjusting rod; The boring roller head (38) is provided with an axial inner hole (382) of the boring roller head, and the boring roller head (38) is sleeved on the stepped shaft (12) through the axial inner hole (382) of the boring roller head ) and connected to the stepped shaft (12), the boring head (38) has a fine boring tool holder channel (381) arranged along the radial direction of the boring head (38), the boring head (38) The roller head (38) is also provided with an inclined threaded through hole (383), and the adjustment rod (36) is located in the axial inner hole (382) of the boring roller head; The middle wedge (37) is provided with a threaded middle hole (372), the adjustment rod passes through the threaded middle hole (372), and can pass through the threaded middle hole (372) relative to the middle wedge (37) ) rotation, wherein the side of the middle wedge (37) is provided with an inclined chute (371); A fine boring tool holder (34), one end of which is provided with a fine boring blade (344), the fine boring tool holder (34) is arranged in the fine boring tool holder channel (381), and the fine boring tool holder ( 34) The end away from the fine boring blade (344) is clamped in the inclined chute (371) of the middle wedge (37), and the fine boring holder (34) is also provided with an inclined groove a blind hole (341), the inclined blind hole (341) corresponds to the inclined threaded through hole (383); A reset elastic member (342), disposed in the inclined blind hole (341); A fixing piece (343) is disposed in the inclined threaded through hole (383) and is threadedly connected with the inclined threaded through hole (383), the fixing piece (343) abuts the reset elastic piece (342) ; an adjustment cover (32), connected to the second end (362) of the adjustment rod and located in the axial inner hole (382) of the boring roller; Wherein, the adjustable boring-rolling composite tool (100) further comprises: a hydraulic adjustment mechanism (40) and a connecting shaft (28); The base (11) is provided with a base axial inner hole (111), and the stepped shaft (12) is provided with a stepped shaft inner hole (121) that communicates with the base axial inner hole (111); The hydraulic adjustment mechanism (40) is located in the axial inner hole (111) of the base, and includes: The cylinder head (41) is provided with an oil inlet port; A piston rod (43), comprising a first end (431) of a piston rod and a second end (432) of a piston rod, wherein the first end (431) of the piston rod is connected to the cylinder head (41); the piston rod (43) is provided with a piston rod inner cavity, and the piston rod inner cavity communicates with the oil inlet port; a cylinder (44) sleeved on the first end of the piston rod (431) and forming a cylinder inner cavity with the piston rod (43), the cylinder inner cavity being communicated with the piston rod inner cavity; An adjusting elastic member (45) is sleeved on the second end (432) of the piston rod, and one end of the adjusting elastic member (45) adjacent to the cylinder cover (41) abuts against the cylinder barrel (44) ; A pin sleeve (46) is located in the stepped shaft inner hole (121) and includes an opposite first end (461) and a second end (462) of the pin sleeve, the first end of the pin sleeve (461) is connected to the second end of the piston rod (432), the second end of the pin sleeve (462) is provided with a first pin hole (463), wherein the other end of the adjusting elastic member (45) abuts the pin sleeve first end (461); and a pin (27), penetrating the first pin hole (463); The connecting shaft (28) includes a first end (281) of the connecting shaft and a second end (282) of the connecting shaft, wherein the first end (281) of the connecting shaft is located at the hydraulic adjustment mechanism (40) In the first pin hole (463), the pin (27) penetrates the first end (281) of the connecting shaft through the first pin hole (463), and the second end (282) of the connecting shaft The first end (361) of the adjusting rod of the cutting mechanism (30) is connected. 7 . The adjustable boring-rolling compound tool according to claim 6 , wherein the stepped shaft ( 12 ) comprises: a first stepped shaft ( 122 ), a second stepped shaft ( 123 ) and a third stepped shaft ( 123 ) connected in sequence. 8 . a stepped shaft (124), the first stepped shaft (122) is connected to the base (11), and the first stepped shaft (122) is provided with a second pin hole (125) corresponding to the pin (27); Wherein the stepped shaft (12) is provided with a sliding key groove (16) along the axial direction; The rolling mechanism (20) further includes: A sliding key (271), one end of which is provided with a sliding key hole (2711) corresponding to the pin (27), and the pin (27) penetrates the second pin hole (125) and the sliding key hole (2711); The sliding key (271) is arranged in the sliding key groove (16); The raceway (29) includes: the opposite first end (291) and the second end (292) of the raceway, and the opposite outer cone surface (293) of the raceway and the inner hole surface (294) of the raceway, the raceway The diameter of the first end (291) of the raceway is smaller than the diameter of the second end (292) of the raceway, and the raceway (29) is sleeved on the third stepped shaft (294) through the inner hole surface of the raceway (294). 124), the inner hole surface of the raceway (294) is provided with a slideway groove (295), wherein the sliding key (271) is also set in the slideway groove (295) and the sliding key (271) ) is an interference fit with the chute groove (295); A roller support (22) is sleeved on the raceway (29), and a roller accommodating groove (221) is provided on the roller support (22); A roller (24) is arranged in the roller accommodating groove (221) and includes a first roller end (241) and a second roller end (242) opposite to each other, the roller first end (241) The diameter of the roller is larger than the diameter of the second end of the roller (241), and the first end of the roller (241) is disposed adjacent to the first end of the raceway (291), and the second end of the roller (242) Provided adjacent to the second end (292) of the raceway, the roller (24) further has a roller outer conical surface (243), and the roller outer conical surface (243) abuts against the raceway outer conical surface ( 293 ) and can roll and slide relative to the outer conical surface ( 293 ) of the raceway. 8. The adjustable boring-rolling composite tool according to claim 7, characterized in that, The roller bracket (22) includes a bracket main body and a bracket end cover (23), the bracket main body is provided with a roller slot, and the bracket end cover (23) is connected to the roller on the bracket main body. One end of the column slot is formed with the roller slot to form the roller accommodating groove (221) for accommodating the roller (24). 9. The adjustable boring-rolling composite tool according to claim 6, wherein the adjustable boring-rolling composite tool (100) further comprises a plurality of first guide blocks (14); The base (11) is provided with a plurality of first guide grooves (141), and the plurality of first guide blocks (14) are disposed in the first guide grooves (141) in a one-to-one correspondence. 10. The adjustable boring-rolling composite tool according to claim 6, wherein the boring-rolling head (38) is respectively provided with a rough boring tool holder groove (331), a second guide groove (311) and the third guide groove (351); The cutting mechanism (30) further comprises: a rough boring tool holder (33), a second guide block (31) and a third guide block (35), the rough boring tool holder (33) is fixed on the rough boring tool In the frame groove (331), the second guide block (31) and the third guide block (35) are arranged in the second guide groove (311) and the third guide groove (351) in a one-to-one correspondence Inside. 11. The adjustable boring-rolling compound tool according to claim 7, characterized in that, the taper of the outer cone surface of the raceway (293) is the same as that of the outer cone surface of the roller (243). 12 . The adjustable boring-rolling compound tool according to claim 11 , wherein the taper of the outer cone surface of the raceway ( 293 ) and the taper of the outer cone surface of the roller ( 243 ) are 1:20. 13 .

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