CN112171269A - Drilling and reaming device and method - Google Patents

Abstract

The invention provides a drilling and reaming method, which is applied to a drilling and reaming device, wherein the drilling and reaming device comprises a drilling shaft, a drill bit arranged at one end of the drilling shaft and a reaming assembly; the reaming assembly comprises a mounting seat for connecting the drill bit and the drill shaft, at least one reaming piece hinged to one end of the mounting seat, which is away from the drill bit, and a first driving mechanism for driving the at least one reaming piece to move; the drilling and reaming method comprises the following steps: the drill shaft is driven to rotate, the drill shaft drives the drill bit and the hole expanding piece to rotate, and the drill bit starts to drill holes; when the drill bit drills into a proper depth, one end of the reaming piece, which is far away from the mounting seat, is driven to be far away from the drill shaft, the reaming piece is opened relative to the drill shaft, and the reaming piece starts to ream; after reaming is finished, one end, far away from the mounting seat, of the reaming piece is driven to be close to the drill shaft until the reaming piece is completely folded relative to the drill shaft, and the drill shaft is withdrawn from the inner cavity after reaming is finished. The invention also provides the drilling and reaming device.

Description

Drilling and reaming device and method

Technical Field

The invention relates to the technical field of drilling and reaming, in particular to a drilling and reaming device and method.

Background

Along with the development of social economy, the use of woodwork is more and more extensive, and in some special user demands, the woodwork need be seted up the internal cavity that the internal diameter is different in different positions size. In the prior art, in the processing of the inner cavity of a wooden product, generally, a straight hole with a constant inner diameter is processed by using drilling equipment, and then the straight hole is reamed by using equipment such as a boring machine, a lathe, a milling machine and the like so as to complete the processing of parts with different inner diameters of the inner cavity. However, in the processing process, different equipment is required for drilling and reaming, the cost is high, and the wood products to be processed are mounted on the corresponding equipment, so that time and labor are wasted; in addition, in the reaming process, the machining position and the machining angle of the cutter need to be changed continuously after the machining cutter extends into the straight hole, so that machining at different inner diameters can be realized, and the operation is complex and the efficiency is low.

Disclosure of Invention

In view of this, the present invention provides a drilling and reaming device and method, which integrate drilling and reaming functions, can machine inner cavities with different inner diameters at different positions and sizes on a wooden product, and is simple to operate and high in efficiency.

The invention provides a drilling and reaming device, which comprises a drill shaft, a drill bit arranged at one end of the drill shaft and a reaming component, wherein the drill bit is arranged at the other end of the drill shaft; the reaming assembly comprises a mounting seat for connecting the drill bit and the drill shaft, at least one reaming piece hinged to one end of the mounting seat, which is far away from the drill bit, and a first driving mechanism for driving the at least one reaming piece to move; one end of at least one hole expanding piece is hinged with the mounting seat, and the other end, far away from the mounting seat, of the at least one hole expanding piece is connected to the first driving mechanism; the first driving mechanism can drive the other end, far away from the mounting seat, of the at least one hole expanding piece to be far away from or close to the drill shaft, so that the machining radius of the at least one hole expanding piece can be changed.

The invention also provides a drilling and reaming method, which is applied to a drilling and reaming device, wherein the drilling and reaming device comprises a drilling shaft, a drill bit arranged at one end of the drilling shaft and a reaming component; the reaming assembly comprises a mounting seat for connecting the drill bit and the drill shaft, at least one reaming piece hinged to one end of the mounting seat, which is far away from the drill bit, and a first driving mechanism for driving the at least one reaming piece to move; the first driving mechanism can drive one end of at least one hole expanding piece far away from the mounting seat to be far away from or close to the drill shaft so as to change the machining radius of at least one hole expanding piece; the drilling and reaming method comprises the following steps: driving the drill shaft to rotate, wherein the drill shaft drives the drill bit and the hole expanding piece to rotate, and the drill bit starts to drill; after the drill bit drills into a proper depth, one end, far away from the mounting seat, of the hole expanding piece is driven to be far away from the drill shaft, the hole expanding piece expands relative to the drill shaft, and hole expanding is started through the hole expanding piece; and after reaming, driving one end, far away from the mounting seat, of the reaming piece to be close to the drill shaft until the reaming piece is completely folded relative to the drill shaft, and withdrawing the drill shaft from the inner cavity after reaming.

According to the drilling and reaming device and the drilling and reaming method provided by the invention, the drill bit and the reaming piece are driven to rotate by the drill shaft, the drill bit starts to drill, after the drill bit is drilled into a proper depth, one end of the reaming piece, which is far away from the mounting seat, is driven to be far away from or close to the drill shaft by the first driving mechanism so as to correspondingly change the processing radius of the reaming piece, namely, the reaming piece can be used for reaming, so that inner cavities with different inner diameters at different positions and sizes are processed, and the operation is simple and the efficiency is high.

Drawings

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

Fig. 1 is a schematic view of the overall structure of a borehole reaming apparatus according to an embodiment of the present invention.

Fig. 2 is a partial schematic view of the borehole reaming apparatus of fig. 1 in a collapsed condition.

Fig. 3 is a schematic view of a portion of the borehole reaming apparatus of fig. 1 in an expanded state.

Fig. 4 is a partial cross-sectional view of fig. 2.

Fig. 5 is a perspective view of the reamer of fig. 4.

FIG. 6 is a top end view of the reamer of FIG. 5.

Figure 7 is a cross-sectional schematic view of another construction of the sliding sleeve assembly of figure 4.

Fig. 8 is a perspective view of the mounting base in fig. 4.

Fig. 9 is a flow chart of a borehole reaming method provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, a drilling and reaming device 100 according to an embodiment of the present invention is used for machining an inner cavity of a workpiece 10, and the drilling and reaming device 100 includes a drill spindle 20, a drill 30 disposed at one end of the drill spindle 20, and a reaming assembly 40. The reaming assembly 40 comprises a mounting seat 41 for connecting the drill shaft 20 and the drill bit 30, at least one reaming member 43 hinged to an end of the mounting seat 41 facing away from the drill bit 30, and a first driving mechanism 45 for driving at least one reaming member 43 to move.

In this embodiment, the workpiece 10 is a wooden product. In other embodiments, the workpiece 10 may be aluminum, brass, foam, or other materials, i.e., the borehole reaming apparatus 100 may be used for machining of multiple materials.

In this embodiment, the drill 30, the mounting seat 41 and the drill shaft 20 are non-integral structures. The drill 30 is a cone drill, and a screw for connecting the mounting seat 41 is arranged at the upper end of the drill 30. The mounting seat 41 is a hollow seat body, and internal threads are arranged at two ends of an inner cavity of the mounting seat 41. The screw of the drill 30 and one end of the drill shaft 20 close to the drill 30 are both provided with corresponding external threads, the drill 30 is screwed to one end of the mounting seat 41 through the screw, and the other end opposite to the mounting seat 41 is screwed to one end of the drill shaft 20, so that the drill 30, the mounting seat 41 and the drill shaft 20 are sequentially detachably connected into a whole.

Wherein, the drill bit 30 is detachably connected to the mounting seat 41, which is beneficial for users to change the type of the drill bit according to actual needs.

The mounting seat 41 is cylindrical, and the outer diameter of the mounting seat 41 is not greater than the outer diameter of the end face of the drill 30 connected with the mounting seat 41, so as to ensure that the drill 30 is not affected by the mounting seat 41 during drilling.

In other embodiments, the drill 30 and the mounting seat 41 may be a unitary structure, the drill 30 includes a drill tip and a drill body, and the drill body of the drill 30 is the mounting seat 41.

In other embodiments, the mounting seat 41 and the drill shaft 20 may be an integral structure, the drill shaft 20 may be a non-uniform diameter drill shaft, the drill shaft 20 includes a large diameter section and a small diameter section, and the large diameter section of the drill shaft 20 is the mounting seat 41.

In other embodiments, the drill bit 30, the mounting block 41, and the drill shaft 20 may be a unitary structure.

When the drill shaft 20 is driven by the motor 50 to rotate, the drill bit 30 and the mounting seat 41 rotate along with the drill shaft 20, and at least one hole expanding piece 43 hinged to one end of the mounting seat 41 also rotates along with the mounting seat 41.

One end of at least one of the hole expanding pieces 43 is hinged to the mounting seat 41, and the other end of at least one of the hole expanding pieces 43, which is far away from the mounting seat 41, is connected to the first driving mechanism 45. The first driving mechanism 45 can drive the other end of the at least one hole expanding piece 43 far away from the mounting seat 41 to be far away from or close to the drill shaft 20 so as to change the machining radius of the at least one hole expanding piece 43.

Wherein the other end can be any reasonable position of the reaming member 43 away from the hinge position of the reaming member 43 and the mounting seat 41, such as the middle position of the reaming member 43.

Therefore, in the present invention, the drill spindle 20 drives the drill 30 and the hole expanding member 43 to rotate, the drill 20 starts to drill a hole on the wooden product 10, and after the wooden product is drilled to a proper depth, the first driving mechanism 45 can drive one end of the hole expanding member 43 far away from the mounting seat 41 to be far away from or close to the drill spindle 30, so as to correspondingly change the processing radius of the hole expanding member 43, that is, the hole expanding member 43 can be used for expanding holes, and inner cavities with different inner diameters at different positions and sizes can be processed, which is simple in operation and high in efficiency.

As shown in fig. 1 to 4, in the present embodiment, the reaming assembly 40 includes 2 reaming members 43, and 2 reaming members 43 are disposed at an end of the mounting seat 41 facing away from the drill bit 30 along the circumference of the drill shaft 20.

In other embodiments, the number of the reamer 43 may be 1, 3, 4 or other reasonable number.

When the number of the hole expanding pieces 43 is 2 or more, the plurality of the hole expanding pieces 43 may be symmetrically arranged or asymmetrically arranged with respect to the axial center line of the drill spindle 20. Preferably, in this embodiment, 2 of the reaming members 43 are symmetrically arranged about the axial center of the drill spindle 20, so that the force of the reaming assembly 40 is balanced during the reaming process.

As shown in fig. 5 and 6, each of the hole expanding members 43 includes a tool mounting body 431 and at least one hole expanding tool 433 disposed on a side of the tool mounting body 431 facing away from the drill shaft 20, and 3 sets of hinge columns 435 are disposed at two opposite sides and a middle position of the tool mounting body 431.

In this embodiment, the cutter mounting body 431 of the reaming piece 43 is provided with 4 reaming cutters 433, the 4 reaming cutters 433 are arranged on the mounting surface 4315 of the cutter mounting body 431 at intervals, and the cutter body of each reaming cutter 433 extends from one end of the cutter mounting body 431 close to the mounting seat 41 to the other end opposite to the one end.

In other embodiments, 4 of the reamer tools 433 may be disposed on the mounting surface 4315 of the tool mounting body 431 in a fan-shaped manner.

In other embodiments, the number of reamer tools 433 may be 1, 2, 3, or other reasonable number.

Preferably, in this embodiment, an included angle between each of the hole expanding cutters 433 and the mounting surface 4315 of the cutter mounting body 431 is smaller than 90 degrees, that is, each of the hole expanding cutters 433 is obliquely disposed on the mounting surface 4135.

The hole expanding cutter 433 is obliquely arranged, so that the workpiece 10 can be cut conveniently, and the hole expanding efficiency is improved; the reaction moment that reamer 433 received when reaming is less than under the condition of being perpendicular to setting up, reamer 433 is difficult for the rupture, can prolong its life.

The reamer 433 is detachably disposed on the cutter mount 431. Specifically, in this embodiment, the cutter mounting body 431 is provided with corresponding clamping grooves, each hole expanding cutter 433 is clamped in the corresponding clamping groove, after hole expansion is completed, the hole expanding cutter 433 arranged on the cutter mounting body 431 can be detached, and then a grinding tool is mounted on the cutter mounting body 431 to grind the inner cavity surface of the workpiece 10 after the hole expanding piece 43 is machined.

Including, but not limited to, sandpaper, sanding belt, brush, etc. In this embodiment, the grinding tool is sand paper attached to the mounting surface 4315 of the tool mounting body 431.

In other embodiments, the expanding cutter 433 is detachably disposed on the mounting surface 4315 of the cutter mounting body 431 by screwing or the like.

Specifically, the mounting surface 4315 of the tool mounting body 431 is an arc surface deviating from the drill spindle 20. The plurality of reaming members 43 arranged along the circumference of the drill shaft 20 are substantially cylindrical after being completely gathered, and an orthographic projection of the cylindrical body on an end face of the mounting seat 41 facing away from the drill bit 30 is located in the end face of the mounting seat 41, that is, the plurality of reaming members 43 completely gathered do not affect the drilling of the drill bit 30.

The installation surface 4315 of the cutter installation body 431 is an arc surface, so that the rotation tracks of the reaming cutters 433 arranged on the installation surface 4315 are positioned on the same circular track, the cutting consistency of each reaming cutter 433 can be ensured, and the reaming uniformity and the reaming quality can be improved.

In other embodiments, the mounting surface 4315 of the tool mounting body 431 may be a flat surface.

The tool attachment body 431 is a plate-shaped attachment body. In this embodiment, the tool mounting body 431 is a substantially rectangular plate.

In other embodiments, the cutter mounting body 431 may be a plate body with other shapes, for example, when a plurality of expanding cutters 433 are divergently arranged on the cutter mounting body 431 in a fan shape, the cutter mounting body 431 may be a substantially fan-shaped plate body, one end of the cutter mounting body 431 hinged to the mounting seat 41 may be slightly narrower than the other end of the cutter mounting body opposite to the end, the shape of the cutter mounting body 431 is the same as the divergent shape of the expanding cutters 433, the overall appearance is better, and one end of the cutter mounting body 431 is narrower, so that the material can be saved.

It is understood that in other embodiments, the reamer 43 may not include the cutter mounting body 431, i.e., the reamer 433 may be directly connected to the mounting base 41 and the first driving mechanism 45.

Referring to fig. 1 to 4, the first driving mechanism 45 includes a sliding sleeve assembly 452 sleeved on the drill shaft 20 and capable of sliding along the axial direction of the drill shaft 20, a link 454 connected between the reaming member 43 and the sliding sleeve assembly 452, and a first driving member 456 for driving the sliding sleeve assembly 452 to slide.

When the first driving member 456 drives the sliding sleeve assembly 452 to slide axially along the drill spindle 20 to move closer to or away from the mounting seat 41, the sliding sleeve assembly 452 drives the end of the reaming member 43 away from the mounting seat 41 through the link member 454 to move away from or close to the drill spindle 20, and the reaming member 43 expands or contracts relative to the drill spindle 20, so as to change the machining radius of the reaming member 43.

The sliding sleeve assembly 452 includes a first sliding sleeve 4521 and a second sliding sleeve 4522 sleeved on an outer side of the first sliding sleeve 4521. One of the first sliding sleeve 4521 and the second sliding sleeve 4522 is fixedly connected with the driving shaft of the first driving member 456, and the other one is hinged with the link member 454. When the first driving member 456 drives the sliding sleeve fixedly connected to the driving shaft thereof to axially slide along the drill spindle 20, the sliding sleeve hinged to the link member 454 axially slides along the drill spindle 20, and the reaming member 43 is driven by the link member 454 to open or retract relative to the drill spindle 20.

Specifically, in this embodiment, the sliding sleeve assembly 452 is a sliding bearing, and the first driving member 456 is an air cylinder. The sliding bearing comprises an inner ring, an outer ring and a plurality of rollers arranged between the inner ring and the outer ring, wherein the inner ring is the first sliding sleeve 4521, the outer ring is the second sliding sleeve 4522, the first sliding sleeve 4521 and the second sliding sleeve 4522 can rotate relatively, the second sliding sleeve 4522 is symmetrically provided with a pair of lugs, and each lug is provided with a through hole. The cylinder comprises a cylinder body 4561 and an expansion link 4562 movably arranged in the cylinder body 4561, wherein the expansion link 4562 is a driving shaft of the first driving member 456. In this embodiment, the telescopic rod 4562 is inserted into a through hole of a corresponding lug of the second sliding sleeve 4522 and is locked and fixed by a nut, and the telescopic direction of the telescopic rod 4562 is parallel to the axial direction of the drill spindle 20. The link 454 is hinged to an end surface of the first sliding sleeve 4521 facing the mounting seat 41.

Therefore, under the action of the air cylinder, the telescopic rod 4562 can drive the second sliding sleeve 4522 to slide axially along the drill spindle 20, and the first sliding sleeve 4521 follows the second sliding sleeve 4522 to slide axially along the drill spindle 20 to drive the reaming member 43 to open or retract relative to the drill spindle 20 through the link 454.

Preferably, in this embodiment, the number of the cylinders is 2, so that the sliding sleeve assembly 452 is balanced in stress.

Preferably, in this embodiment, an end surface of the first sliding sleeve 4521 facing the mount 41 protrudes from an end surface of the second sliding sleeve 4522 facing the mount 41, that is, an end surface of the first sliding sleeve 4521 facing the mount 41 is closer to the mount 41, so as to facilitate the articulation of the link 454 with the first sliding sleeve 4521.

In other embodiments, the sliding sleeve assembly 452 may be a sliding bearing with other structural configurations, for example, as shown in fig. 7, an end of an inner ring of the sliding bearing facing away from the mounting seat 41 protrudes beyond an outer ring of the sliding bearing, the inner ring is symmetrically provided with a pair of lugs at a portion beyond the outer ring, each of the lugs is provided with a through hole, the inner ring is the first sliding sleeve 4521, and the outer ring is the second sliding sleeve 4522. In other words, in other embodiments, the telescopic rod 4562 may be connected to the first sliding sleeve 4521, and the link 454 is hinged to an end surface of the second sliding sleeve 4522 facing the mounting seat 41, so that, under the action of the air cylinder, the telescopic rod 4562 can drive the first sliding sleeve 4521 to slide along the axial direction of the drill spindle 20, and further, the second sliding sleeve 4522 follows the first sliding sleeve 4521 and slides along the axial direction of the drill spindle 20 to drive the reaming member 43 to open or retract relative to the drill spindle 20 through the link 454.

The link 454 and the first sliding sleeve 4521 or the second sliding sleeve 4522 may be hinged by a ball joint or a hinge shaft. In this embodiment, the link 454 is hinged to the first sliding sleeve 4521 by a ball joint, the link 454 is provided with a ball joint structure, a corresponding hinge groove (not shown) is formed in an end surface of the first sliding sleeve 4521 facing the mounting base 41, and the ball joint structure of the link 454 is hinged in the corresponding hinge groove.

Specifically, as shown in fig. 2 to 4, the link 454 includes a first connecting rod 4541, one end of the first connecting rod 4541 is hinged to the reamer 43, and the other end of the first connecting rod 4541 is hinged to the sliding sleeve 452. In this embodiment, one end of the first connecting rod 4541 is hinged to a middle position of a side edge of the tool mounting body 431, the first connecting rod 4541 is provided with a hinge hole corresponding to the hinge column 435, and the other end of the first connecting rod 4541 opposite to the first sliding sleeve 4521 is hinged to an end surface of the first sliding sleeve 4521 facing the mounting seat 41.

The middle positions of two opposite sides of each tool mounting body 431 are hinged to one end of one first connecting rod 4541, that is, each hole expanding element 43 corresponds to two connecting rods 454.

When the first driving member 456 drives the sliding sleeve assembly 452 to slide along the axial direction of the drill shaft 20 to approach the mounting seat 41, one end of the first connecting rod 4541 hinged to the sliding sleeve assembly 452 approaches the mounting seat 41, the other end of the first connecting rod 4541 is opened outwards, the first connecting rod 4541 generates a pushing force, so that the hole expanding member 43 is opened relative to the drill shaft 20; when the first driving member 456 drives the sliding sleeve assembly 452 to slide along the axial direction of the drill shaft 20 to move away from the mounting seat 41, one end of the first connecting rod 4541 hinged to the sliding sleeve assembly 452 moves away from the mounting seat 41, the other end of the first connecting rod 4541 is folded inwards, and the first connecting rod 4541 generates a traction force to fold the reamer 43 relative to the drill shaft 20.

Preferably, in this embodiment, the link 454 further includes a second connecting rod 4542, a length of the second connecting rod 4542 is smaller than a length of the first connecting rod 4541, one end of the second connecting rod 4542 is hinged to one end of the reamer 43 away from the mounting seat 41, and the other end of the second connecting rod 4542 is hinged to a slider on the first connecting rod 4541. Specifically, one end of the second connecting rod 4542 is hinged to the hinge column 435 at one end of the tool mounting body 431 away from the mounting seat 41, the other end of the second connecting rod 4542 opposite to the second connecting rod 4542 is hinged to a slider sleeved on the first connecting rod 4541, and the second connecting rod 4542 can rotate and slide relative to the first connecting rod 4541.

In this embodiment, the link 454 includes the first connecting rod 4541 and the second connecting rod 4542, which can perform better pulling and pushing actions.

It can be understood that the hinge position of the connecting rod 454 and the cutter mounting body 431 may be set at other reasonable positions of the cutter mounting body 431, for example, on a plane of a side of the cutter mounting body 431 facing the drill spindle, only a plane of the side of the cutter mounting body 431 facing the drill spindle needs to be provided with a corresponding hinge structure, which is not described herein again.

As shown in fig. 1, the borehole reaming apparatus 100 further comprises a second driver having a drive shaft connected to an end of the drill shaft 20 remote from the drill bit 30 to drive the drill shaft 20 in rotation. Specifically, in this embodiment, the second driving member is the motor 50, and an output shaft of the motor 50 is in transmission connection with the drill spindle 20 through a belt, so as to drive the drill spindle 20 to drive the drill 30 and the hole expanding member 43 to rotate, thereby achieving drilling and hole expanding.

In other embodiments, the motor 50 and the drill shaft 20 may be connected by a gear drive.

Referring to fig. 1, fig. 4 and fig. 8, the borehole reaming apparatus 100 further includes a vacuum suction assembly 60, the mounting base 41 is provided with at least one suction port 412, and the at least one suction port 412 is communicated with the vacuum suction assembly 60 to suck the debris generated by borehole reaming.

Specifically, in this embodiment, the drill spindle 20 is a hollow drill spindle, 4 air suction ports 412 are symmetrically formed on the outer circumferential wall of the mounting seat 41, and each air suction port 412 is communicated with the hollow inner cavity of the mounting seat 41. When the mounting seat 41 is screwed to the drill shaft 20, the hollow cavities of the two are communicated, and the cavity of the drill shaft 20 is far away from one end of the mounting seat 41 and is connected to the vacuum suction assembly 60 through an air pipe, so that each air suction port 412 is communicated with the vacuum suction assembly 60.

As shown in fig. 8, two sets of hinge seats 414 are further disposed on an end surface of the mounting seat 41 screwed to one end of the drill spindle 20, each hinge seat 414 is provided with a hinge hole, and the two sets of hinge seats 414 are respectively used for hinging one reaming piece 43.

As shown in fig. 1, the vacuum suction assembly 60 includes a vacuum generator 61 and a storage tank 62 communicated with the vacuum generator 61, a rotatable air pipe joint 65 is disposed at an end of the inner cavity of the drill shaft 20 away from the mounting seat 41, an air pipe is sleeved on the rotatable air pipe joint 65 to communicate the inner cavity of the drill shaft 20 with the storage tank 62, the vacuum generator 61 is externally connected with an air source (not shown) to generate a vacuum suction force, and debris is sucked into the storage tank 62 from the air suction port 412 under the action of the vacuum suction force.

Wherein, be provided with the filter layer in the holding vessel 62, the filter layer is used for filtering the piece to prevent that the piece from getting into vacuum generator 61, avoid vacuum generator 61 blocks up.

Wherein the rotatable gas tube connector 65 is capable of holding the gas tube stationary while the drill shaft 20 is rotating to avoid torsional windup of the gas tube due to rotation of the drill shaft 20.

Further, as shown in fig. 1, the drill 30 is provided with a spiral chip guide groove 312, the cross section of the chip guide groove 312 is arc-shaped or V-shaped, and the end of the chip guide groove 312 is close to at least one of the suction ports 412.

The chip guide groove 312 facilitates guiding the chips to the vicinity of the suction opening 412 and then sucking the chips into the storage tank 62, so as to avoid excessive accumulation of the chips to affect the processing.

As shown in fig. 1, the drilling and reaming device 100 further includes a base 71, a working platform 73 disposed on the base 71, two electric telescopic rods 75 disposed on two opposite sides of the base 71, and a cross beam 77 connecting the two electric telescopic rods 75. The worktable 73 is used for placing the workpiece 10, and the worktable 73 has the capability of moving back and forth, left and right. The electric telescopic rod 75 can drive the cross beam 77 to move up and down. The motor 50 and the cylinder are both fixedly arranged on the cross beam 77.

The cross beam 77 is provided with a mounting hole (not shown), the mounting hole is provided with a bearing seat, and the drill shaft 20 is fixedly sleeved with a bearing and fixed on the bearing seat of the mounting hole through the bearing. The drill spindle 20 penetrates the cross beam 77, and the drill bit 30 and the reaming assembly 40 connected with the drill spindle 20 are located below the cross beam 77 and suspended above the worktable 73. The drill shaft 20, the drill bit 30, and the reaming assembly 40 are fixed to the cross member 77 so as to be movable up and down along with the cross member 77.

The cross beam 77 is further provided with a corresponding through hole (not shown), so that the telescopic rod 4562 of the air cylinder passes through the cross beam 77 and is connected with the sliding sleeve component 452 located below the cross beam 77 to drive the reaming component 40 to move.

The vacuum suction assembly 60 may be disposed on the cross beam 77, or may not be disposed on the cross beam 77. In this embodiment, the vacuum suction assembly 60 is not disposed on the beam 77, so as to reduce the load of the beam 77.

Further, the drilling and reaming device 100 further comprises a control box 79, the control box 79 comprises a control panel (not shown) and a controller (not shown) connected with the control panel, and the controller is further connected with the workbench 73, the electric telescopic rod 75, the motor 50 and the cylinder respectively.

The control panel is used for a user to input a control command or edit a control program.

In some embodiments, the user can input control commands step by step through the control panel to control the movement of the working platform 73 and the electric telescopic rod 75, and the operation of the motor 50 and the air cylinder, accordingly, to machine a desired inner cavity on the workpiece 10. In other words, the borehole reaming apparatus 100 may be manually operated to perform the machining.

In other embodiments, a user may edit a corresponding control program through the control panel in advance according to the shape of the inner cavity to be machined of the workpiece 10 and store the control program in the controller, and after the drilling and reaming device 100 is started, the controller directly calls the control program to correspondingly control the movement of the worktable 73 and the electric telescopic rod 75, and the operation of the motor 50 and the air cylinder, so as to implement automatic machining.

Specifically, when the drilling and reaming device 100 is used, the operation steps are as follows:

firstly, controlling the workbench 73 to move correspondingly, so that the workpiece 10 on the workbench 73 is positioned right below the drill 30;

secondly, controlling the motor 50 to start, driving the drill spindle 20 to rotate, so as to drive the drill bit 30 and the hole expanding piece 43 to rotate;

then, the electric telescopic rod 75 is controlled to move downwards, the drill 30 is in contact with the workpiece 10, and the drill 30 starts to drill; when the drill bit 30 drills into a proper depth, the air cylinder is controlled to be started, one end, away from the mounting seat 41, of the hole expanding piece 43 is driven to be away from the drill shaft 20, the hole expanding piece 43 is expanded relative to the drill shaft 20, and hole expanding is started through the hole expanding piece 43.

During the reaming process, according to the change of the bore diameter of the inner cavity to be machined, the controller can call a corresponding control program to control the air cylinder to drive one end, far away from the mounting seat 41, of the reaming piece 43 to be far away from or close to the drill spindle 20, so as to change the machining radius of the reaming piece 43. Specifically, when the bore diameter of the inner cavity to be machined needs to be increased, the end, away from the mounting seat 41, of the hole expanding piece 43 is driven to further move away from the drill spindle 20, so that the opening angle of the hole expanding piece 43 relative to the drill spindle 20 is increased, and the machining radius of the hole expanding piece 43 is increased, so as to machine the part, with the larger bore diameter, of the inner cavity; and when the bore diameter of the inner cavity to be processed needs to be reduced, driving one end of the hole expanding piece 43 far away from the mounting seat 41 to be close to the drill shaft 20, so that the opening angle of the hole expanding piece 43 relative to the drill shaft 20 is reduced, and the processing radius of the hole expanding piece 43 is reduced, so as to process the part with the smaller bore diameter of the inner cavity.

Finally, after reaming, the air cylinder drives one end of the reaming piece 43 away from the mounting seat 41 to approach the drill spindle 20 until the reaming piece 43 is completely folded relative to the drill spindle 20, and then the electric telescopic rod 75 is controlled to move upwards to drive the drill spindle 20 to withdraw from the inner cavity after reaming.

Further, after the hole expanding process is completed by using the drilling and hole expanding device 100, the user may also detach the hole expanding cutter 433 of the hole expanding member 43, and mount a corresponding grinding tool on the cutter mounting body 431 to grind the surface of the inner cavity. Specifically, after the grinding tool is installed, the drill spindle 20 is driven to rotate to drive the grinding tool on the reaming member 43 to rotate, and the end of the reaming member 43 away from the mounting seat 41 is correspondingly driven to move away from or close to the drill spindle 20 according to the aperture size of the inner cavity, so as to correspondingly adjust the machining radius of the reaming member 43, and the grinding tool starts to grind the surface of the inner cavity. After the grinding is finished, driving one end of the reaming piece 43 far away from the mounting seat 41 to be close to the drill spindle 20 until the reaming piece 43 is completely folded relative to the drill spindle 20, withdrawing the drill spindle 20 from the ground inner cavity, and finishing the machining.

The workpiece 10 may or may not rotate during the machining process. Specifically, in this embodiment, the workpiece 10 is fixed on the working table 73, that is, the workpiece 10 does not rotate during the machining process, and the drill 30 and the reaming member 43 rotate relative to the workpiece 10, which is beneficial to improving the precision of drilling and reaming.

Certainly, in other embodiments, a third driving element for driving the workpiece 10 to rotate may be disposed on the working table 73, and during the machining process, the rotation directions of the workpiece 10, the drill 30 and the reaming element 43 are opposite, and the relative rotation speed between the workpiece 10, the drill 30 and the reaming element 43 is increased, which is beneficial to improving the efficiency of drilling and reaming, and details are not described here.

As described above, the drill spindle 20 drives the drill 30 and the hole expanding member 43 to rotate, the drill 20 starts to drill a hole on the workpiece 10, and after the drill is drilled to a proper depth, the first driving mechanism 45 can drive one end of the hole expanding member 43 far away from the mounting seat 41 to be far away from or close to the drill spindle 30, so as to correspondingly change the machining radius of the hole expanding member 43, that is, the hole can be expanded by using the hole expanding member 43, so that inner cavities with different inner diameters at different positions and sizes can be machined, and the operation is simple and efficient; furthermore, reaming piece 43 can install the grinding apparatus to be used for polishing the inner chamber, drilling reaming device 100 collects drilling, reaming, polishing function in an organic whole, and the function is various.

Referring to fig. 9, fig. 9 is a flowchart of a method for reaming a borehole according to the present invention. The drilling and reaming method is applied to the drilling and reaming device 100, and the drilling and reaming device 100 comprises a drill shaft 20, a drill bit 30 arranged at one end of the drill shaft 20, and a reaming assembly 40; the reaming assembly 40 comprises a mounting seat 41 for connecting the drill bit 20 and the drill shaft 30, at least one reaming piece 43 hinged to one end of the mounting seat 41 away from the drill bit 20, and a first driving mechanism 45 for driving at least one reaming piece 43 to move; the first driving mechanism 45 can drive one end of at least one hole expanding piece 43 far away from the mounting seat 41 to be far away from or close to the drill shaft 20 so as to change the machining radius of at least one hole expanding piece 43.

Specifically, as shown in fig. 9, the drilling and reaming method includes the following steps:

the drill shaft is driven to rotate, the drill shaft drives the drill bit and the hole expanding piece to rotate, and the drill bit starts to drill a hole (S1).

When the drill bit drills to a proper depth, the end of the reaming member away from the mounting seat is driven away from the drill shaft, the reaming member is opened relative to the drill shaft, and the reaming member starts to ream (S2).

And after reaming, driving one end of the reaming piece, which is far away from the mounting seat, to be close to the drill shaft until the reaming piece is completely folded relative to the drill shaft, and withdrawing the drill shaft from the inner cavity after reaming (S3).

It will be appreciated that during reaming, the radius of the reamer 43 is varied to machine different locations of the bore, depending on the bore diameter of the bore to be machined.

Specifically, the step S2 includes: in the reaming process, when the bore diameter of the inner cavity to be machined needs to be increased, the end, away from the mounting seat 41, of the reaming piece 43 is driven to further away from the drill spindle 20, so that the opening angle of the reaming piece 43 relative to the drill spindle 20 is increased, and the machining radius of the reaming piece 43 is increased, so as to machine the part, with the larger bore diameter, of the inner cavity.

The step S2 further includes: in the reaming process, when the bore diameter of the inner cavity to be machined needs to be reduced, the end, away from the mounting seat 41, of the reaming piece 43 is driven to be close to the drill shaft 20, so that the opening angle of the reaming piece 43 relative to the drill shaft 20 is reduced, and the machining radius of the reaming piece 43 is reduced, so that the part with the smaller bore diameter of the inner cavity is machined.

Further, in a preferred embodiment, the reamer 43 includes a cutter mounting body 431 and at least one reamer 433 disposed on a side of the cutter mounting body 431 away from the drill spindle 20, and the at least one reamer 433 is detachably disposed on the cutter mounting body 431; the method of reaming a borehole further comprises the steps of:

after the hole expanding process is completed, the hole expanding tool 433 provided on the tool mounting body 431 is removed, and a grinder is mounted on the tool mounting body 431, and the surface of the inner cavity is ground by using the grinder.

Specifically, after a grinding tool is installed, the drill spindle 20 is driven to rotate to drive the reaming piece 43 to rotate, and according to the aperture size of the inner cavity, one end of the reaming piece 43, which is far away from the installation base 41, is correspondingly driven to be far away from or close to the drill spindle 20, so as to correspondingly adjust the machining radius of the reaming piece 43, and the grinding tool starts to grind the surface of the inner cavity; after the grinding is finished, driving one end of the reaming piece 43 far away from the mounting seat 41 to be close to the drill shaft 20 until the reaming piece 43 is completely gathered relative to the drill shaft 20, withdrawing the drill shaft 20 from the ground inner cavity, and finishing the machining.

The drilling and reaming device 100 provided by the invention integrates the functions of drilling, reaming and polishing, and by adopting the method, inner cavities with different inner diameters at different positions and sizes can be processed, so that the operation is simple and the efficiency is high, and the more detailed description can refer to the related contents of the drilling and reaming device 100 and is not repeated herein.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims (15)

1. A drilling and reaming device is characterized by comprising a drill shaft, a drill bit arranged at one end of the drill shaft and a reaming assembly; the reaming assembly comprises a mounting seat for connecting the drill bit and the drill shaft, at least one reaming piece hinged to one end of the mounting seat, which is far away from the drill bit, and a first driving mechanism for driving the at least one reaming piece to move;

one end of at least one hole expanding piece is hinged with the mounting seat, and the other end, far away from the mounting seat, of the at least one hole expanding piece is connected to the first driving mechanism; the first driving mechanism can drive the other end, far away from the mounting seat, of the at least one hole expanding piece to be far away from or close to the drill shaft so as to change the machining radius of the at least one hole expanding piece.

2. The drilling and reaming device of claim 1, wherein the first driving mechanism comprises a sliding sleeve assembly sleeved on the drill shaft and capable of sliding axially along the drill shaft, a connecting rod connected between at least one of the reaming members and the sliding sleeve assembly, and a first driving member for driving the sliding sleeve assembly to slide; when the first driving piece drives the sliding sleeve component to axially slide along the drilling shaft to be close to or far away from the mounting seat, the sliding sleeve component drives at least one hole expanding piece to expand or contract relative to the drilling shaft through the connecting rod piece.

3. The drilling and reaming device of claim 2, wherein the sliding sleeve assembly comprises a first sliding sleeve and a second sliding sleeve sleeved outside the first sliding sleeve, and the first sliding sleeve and the second sliding sleeve can rotate relatively; one of the first sliding sleeve and the second sliding sleeve is fixedly connected with a driving shaft of the first driving piece, and the other sliding sleeve is hinged with the connecting rod piece; when the first driving piece drives the sliding sleeve fixedly connected with the driving shaft of the first driving piece to axially slide along the drilling shaft, the sliding sleeve hinged with the connecting rod piece axially slides along the drilling shaft, and the connecting rod piece drives at least one hole expanding piece to open or retract relative to the drilling shaft.

4. The borehole reaming device of claim 2 wherein said link member comprises a first link, one end of said first link being hingedly connected to said reaming member and the opposite end of said first link being hingedly connected to said sliding sleeve assembly.

5. The borehole reaming device according to claim 4, wherein the connecting rod further comprises a second connecting rod, the length of the second connecting rod is smaller than that of the first connecting rod, one end of the second connecting rod is hinged to the end of the reaming member away from the mounting seat, and the other end of the second connecting rod opposite to the second connecting rod is hinged to the sliding block on the first connecting rod.

6. The borehole reaming device according to claim 1, wherein the reaming assembly comprises a plurality of reaming members disposed at an end of the mounting base away from the drill bit along a circumferential direction of the drill shaft, each reaming member comprising a tool mounting body and at least one reaming tool disposed at a side of the tool mounting body away from the drill shaft.

7. The drilling and reaming device according to claim 6, wherein the reamer mounting body of the reaming member is provided with a plurality of reamer tools, the reamer tools are arranged on the mounting surface of the reamer mounting body at intervals, and an included angle between each reamer tool and the mounting surface of the reamer mounting body is smaller than 90 degrees.

8. The borehole reaming device of claim 6, wherein the reaming tool is removably disposed on the tool mounting body; and after the hole expanding cutter arranged on the cutter mounting body is disassembled, a grinding tool is arranged on the cutter mounting body so as to grind the surface of the inner cavity of the processed hole expanding piece.

9. The drilling and reaming device according to claim 6, wherein the mounting surface of the cutter mounting body is an arc surface away from the drill spindle, the plurality of reaming pieces arranged along the circumferential direction of the drill spindle are cylindrical after being completely gathered, and an orthographic projection of the cylindrical body on an end face of the mounting base, which is away from the drill bit, is located in the end face of the mounting base.

10. The borehole reaming device of claim 1 further comprising a second drive member having a drive shaft coupled to an end of the drill shaft distal from the drill bit for driving rotation of the drill shaft.

11. The borehole reaming apparatus according to claim 1, further comprising a vacuum suction assembly, wherein the mounting base defines at least one suction port, and the at least one suction port is connected to the vacuum suction assembly for sucking debris generated by reaming the borehole.

12. The drilling and reaming device of claim 11 wherein said drill head defines a helical flute having an arcuate or V-shaped cross-section, said flute terminating in at least one of said air aspiration ports.

13. A drilling and reaming method is applied to a drilling and reaming device and is characterized in that the drilling and reaming device comprises a drill shaft, a drill bit arranged at one end of the drill shaft and a reaming assembly; the reaming assembly comprises a mounting seat for connecting the drill bit and the drill shaft, at least one reaming piece hinged to one end of the mounting seat, which is far away from the drill bit, and a first driving mechanism for driving the at least one reaming piece to move; the first driving mechanism can drive one end of at least one hole expanding piece far away from the mounting seat to be far away from or close to the drill shaft so as to change the machining radius of at least one hole expanding piece; the drilling and reaming method comprises the following steps:

s1: driving the drill shaft to rotate, wherein the drill shaft drives the drill bit and the hole expanding piece to rotate, and the drill bit starts to drill;

s2: after the drill bit drills into a proper depth, one end, far away from the mounting seat, of the hole expanding piece is driven to be far away from the drill shaft, the hole expanding piece expands relative to the drill shaft, and hole expanding is started through the hole expanding piece;

s3: and after reaming, driving one end, far away from the mounting seat, of the reaming piece to be close to the drill shaft until the reaming piece is completely folded relative to the drill shaft, and withdrawing the drill shaft from the inner cavity after reaming.

14. The borehole reaming method according to claim 13, further comprising the steps of:

in the reaming process, when the aperture of the inner cavity to be machined needs to be enlarged, driving one end, far away from the mounting seat, of the reaming piece to further be far away from the drill shaft, so that the opening angle of the reaming piece relative to the drill shaft is increased, and the machining radius of the reaming piece is increased, so that the part with the larger aperture of the inner cavity is machined; and

in the reaming process, when the aperture of the inner cavity to be machined needs to be reduced, one end, far away from the mounting seat, of the reaming piece is driven to be close to the drill spindle, so that the opening angle of the reaming piece relative to the drill spindle is reduced, and the machining radius of the reaming piece is reduced, so that the part with the smaller aperture of the inner cavity is machined.

15. The method of claim 13, wherein the reamer includes a tool mounting body and at least one reamer tool disposed on a side of the tool mounting body facing away from the drill shaft, the at least one reamer tool being removably disposed on the tool mounting body; the method of reaming a borehole further comprises the steps of:

after the reaming processing is finished, the reaming cutter arranged on the cutter mounting body is detached, then a grinding tool is mounted on the cutter mounting body, and the surface of the inner cavity is ground by the grinding tool.

Images