CN210334599U

CN210334599U - Portable reaming tool

Info

Publication number: CN210334599U
Application number: CN201920612909.0U
Authority: CN
Inventors: 马滕; 刘忠彬
Original assignee: China Nuclear Industry Maintenance Co Ltd
Current assignee: China Nuclear Industry Maintenance Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-04-17
Anticipated expiration: 2029-04-29

Abstract

The utility model provides a portable reaming instrument, including knife rest supporting seat, knife rest, feed adjustment mechanism, degree of depth adjustment mechanism, rotational speed adjustment mechanism and cutter, the knife rest supporting seat can be installed on treating the reaming piece, and feed adjustment mechanism locates on the knife rest supporting seat, and the knife rest is installed on feed adjustment mechanism's output and slides and locate the knife rest supporting seat, and the cutter is installed on rotational speed adjustment mechanism, and rotational speed adjustment mechanism installs in degree of depth adjustment mechanism's output, and degree of depth adjustment mechanism activity is located on the knife rest and the depth of processing of adjustable cutter. The utility model provides a portable reaming instrument is light nimble, treats that reaming piece just can process where on the spot where, has improved the reaming operating efficiency of nuclear power maintenance in-process, reduces the activity duration, and the manpower that reduces the operation in-process consumes, reduces the risk of whole process, improves whole operating efficiency.

Description

Portable reaming tool

Technical Field

The utility model belongs to the technical field of the nuclear power station overhauls, more specifically says, relates to a portable reaming instrument.

Background

Mechanical equipment is overhauled in the nuclear power overhaul process, and each mechanical equipment overhaul relates to various assemblies. In the assembling process, the situation of position deviation of assembling holes of new spare parts is caused, for example, when a motor is replaced, the motor models are consistent, the production batches are inconsistent, the bolt pitch between a new motor and an old motor is different due to the difference of machining processes, so that bolts cannot normally pass through a motor base hole and a motor fixing base hole, the connection between the motor and the fixing base is influenced, and the installation is influenced due to the change of bolt through hole position parameters caused by the deviation of the machining processes when a plurality of flanges are butted.

The following three schemes can be adopted when the existing bolt hole positions are inconsistent and need to be reamed:

1. the electric grinding head is used for on-site processing (aiming at the condition of low processing precision requirement, such as motor base and other common mechanical connection): the handheld electric grinding head is used for processing a part needing reaming, the precision is not high in the grinding process due to handheld stability factors, the machining quality is not easy to control, the handheld electric grinding head is easy to fatigue by workers for a long time, two to three people are often needed for alternate operation, and the machining period is influenced. In addition, the handheld rotating tool has potential process safety risks, the handheld electric tool has difficulty in positioning the widening, machining points are unstable, large deviation is easy to occur, and the operation efficiency is low.

2. The method comprises the following steps of (1) carrying out field processing by using a manual file (aiming at the condition of low processing precision requirement, such as motor base and other common mechanical connection): the handheld file is used for processing the part needing reaming, the precision is not high when the file is used manually, the processing quality is not easy to control, the processing process is slow, three to four persons are often needed for alternate operation, and the manpower is wasted. In manual operation, a file is needed to repair a small deviation of a part with a hole expansion part for a long time, a large processing part is needed (the thickness of the part with the hole expansion part is more than 10 mm, such as a motor fixed seat hole, and the like), and multiple persons are needed to operate in turn. The manual operation also has the problem of positioning, and because the hand feeling of each operator is inconsistent, the operators with rich experience are required to cooperate, and the manual operation is finished in a long time. The machining precision is not high, and the operating efficiency is low.

3. Machining by using a milling machine (aiming at the condition that the machining precision requirement is high, such as flange surfaces, and the like, connection with precision requirement): the reaming piece with the machining precision requirement is firstly conveyed to a machining workshop from the site by an operator, and is transported back to the site for installation after the machining is finished by using a milling machine. The conveying process needs a plurality of departments to cooperate with a plurality of persons to convey the reaming piece to a machining workshop due to the fact that the reaming piece is heavy individually, and then the reaming piece is hoisted to a machine tool machining workbench by using the travelling crane. Because the length and the width of the workbench of the milling machine and the adjusting range between the workbench and the cutter are limited, part of the large-size hole-expanding piece cannot be machined by the milling machine. Although the machine tool machining is high in precision, the requirement on the volume of the reaming piece is met, the conveying process is high in risk, the multi-department cooperation period is not easy to control, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable reaming instrument to solve the handheld tool reaming precision that exists among the prior art not high and reaming consuming time, consume power, and take reaming piece transport technical problem such as difficulty when milling machine reaming.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a portable reaming instrument, includes knife rest supporting seat, knife rest, feeds adjustment mechanism, degree of depth adjustment mechanism, rotational speed adjustment mechanism and cutter, the knife rest supporting seat can be installed on treating the reaming piece, it locates to feed adjustment mechanism on the knife rest supporting seat, the knife rest install in the output and the slip of feeding adjustment mechanism are located on the knife rest supporting seat, the cutter install in on the rotational speed adjustment mechanism, rotational speed adjustment mechanism install in degree of depth adjustment mechanism's output, degree of depth adjustment mechanism activity is located on the knife rest and adjustable the depth of processing of cutter.

Further, the tool holder support block comprises:

the first positioning plate is used for abutting against one side surface of the part to be reamed so as to position;

the first guide plate is vertically connected with the first positioning plate;

the second positioning plate is arranged opposite to the first positioning plate, is arranged on the first guide plate in a sliding mode and can be locked through a locking part, and is used for abutting against the other side face of the to-be-reamed part to position;

the tool rest is arranged on the first guide plate and is movable between the first positioning plate and the second positioning plate.

Furthermore, a fine adjustment locking structure is arranged on the first positioning plate and used for rotating to abut against one side face of the to-be-reamed hole piece so as to achieve fine adjustment of the span between the first positioning plate and the second positioning plate.

Further, the feed adjustment mechanism includes:

two ends of the first screw rod are respectively erected on the first positioning plate and the second positioning plate;

the first handle is arranged at one end or two ends of the first screw rod;

the tool rest is arranged on the first screw rod and can slide on the first guide plate under the driving of the first screw rod.

Further, the tool holder comprises:

the second guide plate is arranged on the first screw rod, and one end of the second guide plate is arranged on the first guide plate and vertically abutted against the first guide plate;

the mounting panel is perpendicularly located the other end of second deflector, degree of depth adjustment mechanism install in on the mounting panel.

Further, the depth adjustment mechanism includes:

one end of the second screw is arranged on the mounting plate, and the rotating speed adjusting mechanism is movably arranged at the other end of the second screw and can move along the second guide plate;

and the second handle is arranged at one end of the second screw rod and is positioned outside the mounting plate.

Furthermore, the first guide plate is provided with a first scale for measuring the feeding amount of the cutter, and the second guide plate is provided with a second scale for measuring the processing depth of the cutter.

Further, the rotation speed adjustment mechanism further includes:

the control box is arranged at the other end of the second screw rod and can move along the second guide plate;

the control unit is arranged in the control box;

the power supply unit is arranged on the control box and supplies power to the control unit;

the driving motor is arranged in the control box and electrically connected with the control unit, and the cutter is arranged on the driving motor.

Further, the surface of the control box is provided with:

the external power supply access port is used for connecting an external power supply to supply power to the control unit;

the power switch is used for starting the driving motor;

the power supply indicator light is used for displaying the state of the power supply switch;

and the rotating speed adjusting button is used for adjusting the rotating speed of the driving motor.

Further, the output end of the driving motor is provided with a clamp, and the clamp is used for clamping the cutter.

The utility model provides a portable reaming instrument's beneficial effect lies in: compared with the prior art, the utility model discloses a portable reaming instrument passes through the setting of knife rest supporting seat for this portable reaming instrument can be installed on treating reaming piece, through the knife rest, feed adjustment mechanism, degree of depth adjustment mechanism and speed adjustment mechanism adjust the machining parameter of cutter, thereby treat reaming piece through the cutter and carry out the reaming. The utility model discloses a portable reaming instrument is light nimble, treats that reaming piece just can process where on the spot where, has improved the reaming operating efficiency of nuclear power maintenance in-process, reduces the activity duration, and the manpower that reduces the operation in-process consumes, reduces the risk of whole process, improves whole operating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a portable reaming tool according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a rotation speed adjusting mechanism of a portable reaming tool according to an embodiment of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, a portable reaming tool according to the present invention will now be described. This portable reaming instrument includes knife rest supporting seat 1, knife rest 2, feed adjustment mechanism 3, degree of depth adjustment mechanism 4, rotational speed adjustment mechanism and cutter 6, knife rest supporting seat 1 can install on treating the reaming piece, feed adjustment mechanism 3 and locate on knife rest supporting seat 1, knife rest 2 is installed on the output of feeding adjustment mechanism 3 and is slided and locate on knife rest supporting seat 1, cutter 6 is installed on rotational speed adjustment mechanism, rotational speed adjustment mechanism installs in the output of degree of depth adjustment mechanism 4, the degree of depth adjustment mechanism 4 activity is located on knife rest 2 and the machining depth of adjustable cutter 6.

In this embodiment, when the portable reaming tool is used for reaming, the tool rest support seat 1 is firstly installed on a to-be-reamed workpiece, then the feed amount of reaming of the tool 6 is adjusted by the feed adjusting mechanism 3, the machining depth of reaming of the tool 6 is adjusted by the depth adjusting mechanism 4, the rotation speed of the tool 6 is adjusted by the rotation speed adjusting mechanism, and finally, reaming operation is started.

The utility model provides a portable reaming instrument passes through setting of knife rest supporting seat 1 for this portable reaming instrument can install on treating the reaming piece, and adjust the cutter through knife rest 2, feed adjustment mechanism 3, degree of depth adjustment mechanism 4 and rotational speed adjustment mechanism, thereby treat the reaming piece through cutter 6 and carry out the reaming. The utility model discloses a portable reaming instrument is light nimble, treats that reaming piece just can process where on the spot where, has improved the reaming operating efficiency of nuclear power maintenance in-process, reduces the activity duration, and the manpower that reduces the operation in-process consumes, reduces the risk of whole process, improves whole operating efficiency.

Further, in the present embodiment, referring to fig. 1, the tool holder supporting base 1 includes a first positioning plate 11, a first guiding plate 12 and a second positioning plate 13. First locating plate 11 sets up with second locating plate 13 relatively, and first locating plate 12 is connected with first locating plate 11 and second locating plate 13 is perpendicular respectively, and wherein, first locating plate 11 and first locating plate 12 fixed connection, second locating plate 13 slide locate on first locating plate 12 and accessible retaining member 14 locks, and knife rest 2 locates on first locating plate 12 and moves about between first locating plate 11 and second locating plate 13.

Preferably, the portable reaming tool in this embodiment is mainly dedicated to reaming rectangular surfaces, and during specific installation: firstly, the first positioning plate 11 is abutted to one side face of a to-be-reamed part for positioning, then the second positioning plate 13 is moved on the first guide plate 12, the second positioning plate 13 is abutted to the other side face of the to-be-reamed part for positioning, the tool rest 2 is enabled to be right opposite to the processing face of the to-be-reamed part, the tool rest 2 is arranged between the first positioning plate 11 and the second positioning plate 13 in a sliding mode, and finally the second positioning plate 13 is locked and fixed through the locking part 14, so that the tool rest supporting seat 1 is installed on the to-be-reamed part. According to the tool rest supporting seat 1, the tool 6 can be fixed on the rectangular surfaces with different span sizes, so that the tool rest supporting seat can be suitable for parts to be subjected to hole expanding with different sizes, and the application range is wider. It can be understood that in other embodiments of the present invention, according to the different specific structures and sizes of the hole-enlarging members, the tool-holder supporting seat 1 can be set in other forms, and the portable hole-enlarging tool can be used for enlarging holes in structures other than rectangular surfaces, and the present invention is not limited to this.

Preferably, in this embodiment, the locking member 14 is preferably a bolt. It should be understood that, in other embodiments of the present invention, the locking member 14 may be a screw, a bolt, etc., and is not limited herein.

Preferably, in this embodiment, referring to fig. 1, the first guide plate 12 is provided with a first scale 121 for measuring the feeding amount of the tool 6. Specifically, when the first positioning plate 11 and the second positioning plate 13 are respectively distributed along the left-right direction in fig. 1, and the tool holder 2 is disposed above the first guide plate 12, the first scale 121 is disposed on the front side of the first guide plate 12, so that the operator can observe the feeding amount of the tool 6 conveniently, and the first scale 121 extends to the right end along the left end of the first guide plate 12. In the present embodiment, the length of the first guide plate 12 is preferably 30 cm. It is understood that, in other embodiments of the present invention, the position of the first scale 121 may be adjusted as needed, and the length of the first scale 121 may also be adjusted according to the size of the hole-expanding member, which is not limited herein.

Further, in this embodiment, referring to fig. 1, a fine-tuning locking structure 15 is disposed on the first positioning plate 11, and the fine-tuning locking structure 15 is used to rotate to abut against a side surface of the to-be-reamed hole, so as to achieve fine tuning of the span between the first positioning plate 11 and the second positioning plate 13. The utility model discloses a knife rest supporting seat 1 realizes the coarse adjustment and the locking of 2 spans of knife rest through second locating plate 13 and retaining member 14, and the threaded position of rethread adjustment fine setting locking structure 15 realizes 2 spans of knife rest precision adjustment and locking to guarantee 6 machining precision of cutter.

Preferably, in this embodiment, the fine adjustment locking structure 15 is preferably a bolt, and two bolts are arranged in parallel on the first positioning plate 11. It is understood that, in other embodiments of the present invention, the fine adjustment locking structure 15 may also be a stud, which is not limited herein.

Further, in the present embodiment, referring to fig. 1, the feeding adjustment mechanism 3 includes a first screw 31 and a first handle 32. Two ends of the first screw 31 are respectively erected on the first positioning plate 11 and the second positioning plate 13, one end of the first screw 31 is fixedly connected with the first positioning plate 11, and the other end of the first screw 31 is movably connected with the second positioning plate 13. The first handle 32 is disposed at one end or both ends of the first screw 31, that is, the first handle 32 is disposed at one end of the first screw 31, and the first screw 31 is operated by the first handle 32, or the first handles 32 are disposed at both ends of the first screw 31, and at this time, the operator can select which end of the first handle 32 is used for operation according to the convenience of the operator. In this embodiment, the tool holder 2 is disposed on the first screw 31 and can slide on the first guide plate 12 under the driving of the first screw 31. The feeding adjustment mechanism 3 in this embodiment drives the first screw 31 to rotate by rotating the first handle 32, so that the tool holder 2 moves on the first screw 31, and the feeding position of the tool holder 2 is adjusted.

In this embodiment, the knife rest 2 is directly mounted on the first screw 31, the knife rest 2 is sleeved on the first screw 31, and the screw thread matching with the first screw 31 is arranged in the knife rest 2, so that the knife rest 2 is driven to move on the first screw 31 when the first screw 31 rotates. It should be understood that, in other embodiments of the present invention, according to practical situations and specific requirements, a nut may also be disposed on the first screw 31, the nut may move on the first screw 31, and the tool holder 2 is fixedly connected to the nut, so that the tool holder 2 may move on the first guiding plate 12 under the driving of the first screw 31, which is not limited herein.

Further, please refer to fig. 1, as a specific embodiment of the portable reaming tool provided by the present invention, the tool holder 2 is in an inverted L shape, the tool holder 2 includes a second guiding plate 21 and a mounting plate 22, the second guiding plate 21 is mounted on the first screw 31, one end of the second guiding plate 21 is disposed on the first guiding plate 12 and is abutted against the first guiding plate 12 perpendicularly, the mounting plate 22 is disposed at the other end of the second guiding plate 21 perpendicularly, and the depth adjusting mechanism 4 is mounted on the mounting plate 22. The present embodiment ensures that the feeding direction of the tool 6 is perpendicular to the depth direction of the tool 6 by the arrangement of the second guide plate 21 and the first guide plate 12 perpendicular to each other.

Further, in the present embodiment, the depth adjustment mechanism 4 includes a second screw 41 and a second handle 42. One end of the second screw 41 is disposed on the mounting plate 22, the rotational speed adjusting mechanism is movably disposed at the other end of the second screw 41 and can move along the second guide plate 21, and the second handle 42 is disposed at one end of the second screw 41 and is located outside the mounting plate 22. When the portable reaming tool in this embodiment adjusts the machining depth of the tool 6, the second handle 42 is rotated to drive the second screw rod 41 to rotate, so as to drive the rotation speed adjusting mechanism to move along the second guide plate 21 on the second screw rod 41, thereby adjusting the machining depth of the tool 6.

Preferably, in the present embodiment, the second handle 42 is preferably a circular turntable structure, so as to facilitate manual operation. It is understood that in other embodiments of the present invention, the second handle 42 may have other shapes, such as a square or oval, and the like, which is not limited herein.

Preferably, in this embodiment, referring to fig. 1, the second guide plate 21 is provided with a second scale 211 for measuring the processing depth of the tool 6. Specifically, the depth adjusting mechanism 4 is disposed on the front side of the second guide plate 21, and the second scale 211 is disposed on the left side of the second guide plate 21, so that an operator can observe the processing depth of the tool 6 conveniently, and the second scale 211 extends to the upper end along the lower end of the second guide plate 21. In the present embodiment, the length of the second guide plate 21 is preferably 8 cm. It is understood that, in other embodiments of the present invention, the position of the second scale 211 may be adjusted as required, and the length of the second scale 211 may also be adjusted according to the actual reaming depth, which is not limited herein.

Further, in the present embodiment, referring to fig. 1, the rotation speed adjusting mechanism includes a control box 51, a control unit and a driving motor M. The control box 51 is square, the control box 51 is installed at the other end of the second screw rod 41 and can move along the second guide plate 21, the control unit is arranged in the control box 51, the driving motor M is arranged in the control box 51 and is electrically connected with the control unit, and the cutter 6 is arranged on the driving motor M.

Further, referring to fig. 2, the control unit includes a rotation speed control module IC and a speed regulation positioner RX, and the power supply unit includes an external power supply inlet 511, a fuse FU, a power switch 512, a power transformer T, a distillation bridge D1, a current limiting resistor R1, and a power indicator 513. Specifically, in this embodiment, the external power inlet 511, the power switch 512, the power indicator 513 and the rotation speed adjusting button 514 are all disposed on the surface of the control box 51. The external power supply access port 511 is used for connecting an external power supply to supply power to the driving motor M in the control box 51, the power switch 512 is used for starting the driving motor M, the power indicator 513 is used for displaying the state of the power switch 512, and the rotating speed adjusting button 514 is in contact connection with the speed-adjusting potentiometer RX to press and adjust the rotating speed of the driving motor M.

In the power supply unit in this embodiment, a power supply is introduced from the external power supply access 511, and is sent to the power transformer T through the fuse FU, the power switch 512, and then reduced in voltage, the reduced voltage is rectified into a direct current through the rectifier bridge D1 to be used by the power supply unit, and the current limiting resistor R1 provides a power supply for the power indicator 513. The direct current power supply provided by the power supply unit is adjusted by the rotating speed control module IC and the rotating speed adjusting potentiometer RX and then is sent to the driving motor M, so that the rotating speed adjustment is realized. The rotating speed adjusting knob 514 can realize stepless speed regulation of the cutter 6, and the invention uses a 220V power supply, so that the power supply has wide application range.

Further, in the present embodiment, the conveying end of the driving motor M is further provided with a clamp 7, and the clamp 7 is used for clamping the tool 6. The clamp 7 in the embodiment can meet different processing requirements of the workpiece to be reamed by replacing the cutters 6 of different models.

When the portable special reaming tool for reaming the rectangular surface is used, the position size and the machining area size of the hole to be reamed are determined, the tool rest support seat 1 of the special tool stretches across and is installed at the upper end of the hole to be reamed, the proper tool 6 is installed, fine adjustment of the position of the tool rest 2 is carried out through the fine adjustment locking structure 15, the center of the tool rest 2 is ensured to be perpendicular to the position to be reamed, the direction is consistent, then the power switch 512 is started, the rotation speed of the tool 6 is adjusted through the speed-adjusting potentiometer RX, the operation size of the tool 6 is adjusted through the first handle 32, the machining depth size of the tool 6 is adjusted through the second handle 42, machining of the hole-enlarging part can be achieved, the manual file machining process is omitted, the electric grinding head machining engineering is omitted, the large part and multiple departments are further omitted for assisting in conveying, and related potential risks are.

The method of use of the portable reaming tool is described below with reference to the accompanying drawings:

firstly, fixing a to-be-reamed part on site (most of on-site reaming parts with motors are heavy and can be placed on a flat ground without toppling over), enabling the to-be-reamed surface to face upwards, determining the part and area size to be reamed and the starting point and the stopping point of the to-be-reamed hole, and marking.

Secondly, the portable reaming tool is adjusted as follows:

1) and adjusting the cutter 6: and the second handle 42 is rotated anticlockwise, the second screw rod 41 starts to rotate anticlockwise, the rotating second screw rod 41 drags the control box 51 to move upwards, and meanwhile, the control box 51 drives the clamp 9 and the cutter 6 to move upwards together until the cutter 6 is retreated to be level with the lower surface of the cutter rest supporting seat 1.

2) Adjusting a knife rest supporting seat 1: the two fine-tuning locking structures 15 are respectively rotated counterclockwise until the front ends of the two fine-tuning locking structures 15 are all retreated into the first positioning plate 11, so that heads do not expose. The two locking members 14 are rotated counterclockwise, respectively, so that the second positioning plate 13 can be freely adjusted in position back and forth above the guide support plate 12.

Thirdly, the first positioning plate is abutted against one side of a part to be reamed, the second positioning plate 13 is adjusted to abut against the other side of the part to be reamed, the first screw 31 is consistent and parallel with the direction of a track to be machined by adjusting the tool rest 22 and the second positioning plate 13, the second positioning plate 13 is adjusted and locked to realize coarse adjustment of the tool rest 2, if the position of the whole tool rest 2 is not abnormal, the fine adjustment locking structure 15 is adjusted and locked, and the whole tool rest supporting seat 1 is adjusted, installed and fixed.

Fourthly, under the condition that the whole tool rest supporting seat 1 is adjusted and installed, an external 220V power supply is connected to an external power supply access opening 511, and a power supply switch 512 is started. The power supply forms a loop through the fuse FU, the power switch 512 and the primary side of the power transformer T, voltage is generated on the secondary side of the power transformer T, after the voltage is rectified into direct current power supply through the rectifier bridge D1, the current is limited through the current limiting resistor R1, the loop is formed through the power indicator lamp resistor D2, the power indicator lamp resistor D2 is lightened, and the whole machine enters a standby state.

Five, 1), tool 6 feed preparation: and the first handle 32 is rotated clockwise, the feeding adjusting first screw 31 rotates clockwise, the tool rest 2 and the tool 6 are driven to move towards the part with the hole expanding part, and the tool 6 stops close to the part with the hole expanding part.

2) Preparing the depth of the cutter 6: and (3) rotating the second handle 42 clockwise, rotating the second screw rod 41 clockwise, simultaneously moving the control box 51, the clamp 9 and the cutter 6 together towards the direction with the hole expanding piece, and adjusting the cutter 6 to a proper depth to stop (the depth is adjusted according to actual needs).

3) And preparing the operation of the cutter 6: the speed regulation potentiometer RX is slowly adjusted clockwise, at the moment, the direct current power supply rectified by the D1 passes through the rotating speed regulation module IC and is adjusted by the speed regulation potentiometer RX, the adjusted voltage is added to the driving motor M, the voltage added to the driving motor M is slowly increased along with the clockwise slow adjustment of the speed regulation potentiometer RX through the rotating speed control module IC, the driving motor M is slowly increased along with the voltage increase, and the rotating speed of the cutter 6 is slowly increased along with the rotating speed of the driving motor M. The drive motor M is inside the control box 51 and rotates the clamp 9 and the clamp 9 rotates the cutter 6 (note: the rotation speed cannot be adjusted too high before the cutter 6 has come into contact with the chambered member).

4) The operation of the cutter 6: the first handle 32 is fed by slowly rotating clockwise, the tool rest 2 is adjusted to drive the tool 6 to move towards the direction of the reaming piece, reaming work is started (different speeds can be adjusted according to different materials, and whether cutting fluid is added or not is automatically determined by an operator according to processing materials and processing areas in the processing process) until the tool 6 finishes machining, for machining a thick reaming piece, multiple times of tool feeding can be carried out, and the depth of the tool 6 is adjusted for multiple times to gradually finish machining.

And finally, cleaning the portable reaming tool which finishes the reaming work, and lubricating and maintaining the rotating part for the next use.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Portable reaming instrument, its characterized in that includes knife rest supporting seat, knife rest, feeds adjustment mechanism, degree of depth adjustment mechanism, rotational speed adjustment mechanism and cutter, the knife rest supporting seat can be installed on treating the reaming piece, it locates to feed adjustment mechanism on the knife rest supporting seat, the knife rest install in the output and the slip of feeding adjustment mechanism locate on the knife rest supporting seat, the cutter install in on the rotational speed adjustment mechanism, rotational speed adjustment mechanism install in degree of depth adjustment mechanism's output, degree of depth adjustment mechanism activity is located on the knife rest and adjustable the depth of cut of tool.

2. The portable reaming tool of claim 1 wherein said tool holder support base comprises:

the first guide plate is vertically connected with the first positioning plate;

3. The portable reaming tool of claim 2 wherein the first locator plate is provided with a fine adjustment locking structure for rotation against a side of the member to be reamed to effect fine adjustment of the span between the first locator plate and the second locator plate.

4. The portable reaming tool of claim 3 wherein said feed adjustment mechanism comprises:

the first handle is arranged at one end or two ends of the first screw rod;

5. The portable reaming tool of claim 4 wherein said tool holder comprises:

6. The portable reaming tool of claim 5 wherein said depth adjustment mechanism comprises:

7. The portable reaming tool of claim 6 wherein said first guide plate has a first scale for measuring the feed of said tool and said second guide plate has a second scale for measuring the depth of said tool.

8. The portable reaming tool of claim 7 wherein said rotational speed adjustment mechanism further comprises:

the control unit is arranged in the control box;

9. The portable reaming tool of claim 8 wherein the surface of said control box is provided with:

the power switch is used for starting the driving motor;

10. The portable reaming tool of claim 9 wherein the output of said drive motor is provided with a clamp for holding said cutter.