CN104827102A - Mechanically-clamped counterbore combined drill - Google Patents
Mechanically-clamped counterbore combined drill Download PDFInfo
- Publication number
- CN104827102A CN104827102A CN201510218918.8A CN201510218918A CN104827102A CN 104827102 A CN104827102 A CN 104827102A CN 201510218918 A CN201510218918 A CN 201510218918A CN 104827102 A CN104827102 A CN 104827102A
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- CN
- China
- Prior art keywords
- drill bit
- blade
- cutter
- drill
- pillow block
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/006—Conical shanks of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/10—Bits for countersinking
- B23B51/108—Bits for countersinking having a centering drill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/84—Steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a mechanically-clamped counterbore combined drill. The mechanically-clamped counterbore combined drill comprises a drill bit, a drill bit adjusting threaded shaft, a knurled jacket, a cutter body, a blade, blade tightening screws and washers, wherein the drill bit is a twist drill bit and the tail of the drill bit is connected with the drill bit adjusting threaded shaft; a cylindrical pillow block is arranged on the front end of the cutter body, the rear end of the cutter body is a Morse taper rod with a tang, the external surface of the cylindrical pillow block is fit with the internal surface of the knurled jacket, symmetrical threaded holes are drilled and reamed in the external surface of the knurled jacket, the end surface of the knurled jacket and the boss surface of the cutter body tightly press against each other, a reamed hole is drilled (or ground) in the end surface of the cylindrical pillow block, and the drill bit and the drill bit adjusting threaded shaft are fixedly connected and then are inserted into the inner bore of the cutter body; the blade tightening screws and the washers are located in the threaded holes of the knurled jacket; axially symmetrical cutter grooves are formed in the outer circle of the cylindrical pillow block and the shank of the drill bit, one end of the blade is in tight fit with the cutter groove of the shank of the drill bit, and the other end of the blade is in tight fit with the blade tightening screws and the washers in the knurled jacket. The mechanically-clamped counterbore combined drill has the advantages that the linear speed of the cutter is reasonably distributed, the cutter is not burnt out and the cutting speed and machining efficiency can be improved.
Description
Technical field:
The present invention relates to machining tool technical field, relate to a kind of machine folder counterbore combination drill in particular.
Background technology:
At present for the processing of various bolt, screw counter bore, general producer has come with broad with subdrilling bottom outlet again.Some large enterprises select integral inlet gang tool to process, and gang tool has its obvious advantage: 1, production efficiency is high, when processing several surface with similar process combination cutter simultaneously, the time kept in reserve can be made to overlap; With inhomogeneity process combination cutter, added to one or several surface orders man-hour, can tool change time be reduced.2, machining accuracy is high, adopts gang tool processing, can reduce installation and the position error of workpiece, ensures to obtain higher positional precision between workpiece machining surface.3, processing cost is low, because gang tool has concentrated operation, thus decreases lathe or station quantity, then can reduce investment outlay to Automatic production line, requires lower to the industrial grade of operator.4, the range of work is wide, and hole machined gang tool can process cylindrical hole, taper hole, screwed hole, the multistage hole of complex section shape and coaxial aperture etc. in a distance.But there is the problem of end-tooth coupling part processing difficulties in entire combination cutter simultaneously, for this problem, generally take to cut out escape aft-loaded airfoil end tooth relief angle, this processing method can make tool strength greatly reduce, that reduces cutter can access times, cause the wasting of resources and economic loss.
Summary of the invention:
Object of the present invention is exactly that the problems such as the intensity existed for existing counterbore processing gang tool is not enough, service life is low propose improvement project, normal drill bit fluting and the alloy blade flush type combination of Curve guide impeller, solve a gang tool end tooth relief angle processing difficult problem, achieve clip type counterbore combination drill and process all kinds of screw counter bore, drilling tool cost is low, excellent cutting performance, working (machining) efficiency are high.
Technology solution of the present invention is as follows:
A kind of machine folder counterbore combination drill, by drill bit, drill bit adjusts thread spindle, annular knurl overcoat, cutter hub, blade, blade holds out against screw, pad forms.This drill bit is fluted drill, and afterbody connects drill bit adjustment thread spindle.Cutter hub front end is provided with cylinder pillow block, cutter hub rear end is the Morse's taper bar of band tang, cylinder pillow block outer surface coordinates with annular knurl overcoat inner surface, annular knurl outer jacket surface drills and reams symmetrical screwed hole, the boss face of annular knurl overcoat end face and cutter hub holds out against, the fraising that (or grinding) has certain length is bored in cylinder axis you face, its degree of depth is about in the middle part of cutter hub, tang end face auger shell pit is deep to fraising place, drill bit and drill bit adjust thread spindle and are fixedly connected with and insert cutter hub endoporus, and the screw thread of drill bit adjustment thread spindle is tightened with tang end screwed hole and coordinated.Blade holds out against the screwed hole that screw and pad are positioned at annular knurl overcoat.Cylinder pillow block cylindrical place and drill handle part all have axial symmetrical channels, blade one end coordinates with drill bit and holds out against, blade in one end and annular knurl overcoat holds out against screw and pad and coordinates and hold out against, owing to ignoring the deformation quantity of blade, the equal conllinear of screwed hole center line of the cutter groove center line of drill handle part, the cutter groove center line on cylinder pillow block surface and annular knurl overcoat.
Preferred as technique scheme, the diameter of described drill bit is 13mm, and blade tip is 10mm to cylinder pillow block distance between center line.
Preferred as technique scheme, the material of described drill bit adopts 45# high-carbon steel.
Preferred as technique scheme, the material of described blade adopts steel alloy.
Preferred as technique scheme, the cutting angle of described blade is 6 °.
Preferred as technique scheme, the distance between the vertical center line of insert groove cross section of described drill handle part and the vertical center line of drill bit cross section is 2mm.
Preferred as technique scheme, the distance between the vertical center line of insert groove cross section of described cylinder pillow block and the vertical center line of cylinder pillow block cross section is 2mm.
Preferred as technique scheme, the distance between the vertical center line of screwed hole cross section of described annular knurl overcoat and the vertical center line of annular knurl overcoat cross section is 2mm.
Beneficial effect of the present invention is: unit-type drill head and cutter hub axially grooved location dress alloy blade, make gang tool manufacture simplification, cost reduce; Cutter rationally, not easily burns in drill bit and alloy blade combination, linear velocity branch, can improve cutting speed, working (machining) efficiency; Once hole, to expand counterbore shaping, decrease tool change time, improve effect, standard high-speed tool steel bit and alloy blade combination, for cutter structure has been reformed in the processing of the counterbore such as bolt, screw, filled up machine folder counterbore cutter blank.
Accompanying drawing illustrates:
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is front view of the present invention;
Fig. 2 is top view of the present invention (partly cut-away);
Fig. 3 is that enlarged drawing (partly cut-away) is looked on a left side of the present invention.
Detailed description of the invention:
Embodiment: by particular specific embodiment, working of an invention mode is described below, those skilled in the art can understand other advantages of the present invention and effect easily by content disclosed in the present specification.
As shown in Figure 1, Figure 2 and Figure 3, the present invention by drill bit 1, drill bit adjust thread spindle 4, annular knurl overcoat 2, cutter hub 3, blade 5, blade holds out against screw 6, pad 7 forms.This drill bit 1 is common fluted drill, and afterbody connects drill bit adjustment thread spindle 4, and its effect is the length that adjustment drill bit 1 stretches out cutter hub 3.Cutter hub is the main carriers of combination drill, it mainly plays holding cutter, transmit cutting force, determine tool position, ensure the five functional of cutter running accuracy and adaptation lathe automatic tool changer, cutter hub 3 front end of the present invention is provided with cylinder pillow block 310, its effect be operate on its surface groove place blade 5, as the carrier of blade 5, play a part fixedly to hold out against blade 5, cutter hub 3 rear end is the Morse's taper bar 330 of band tang 320, its effect coordinates with mechanical grip instrument inner surface, cylinder pillow block outer surface 312 coordinates with annular knurl overcoat inner surface 201, annular knurl outer jacket surface 202 drills and reams symmetrical screwed hole, annular knurl overcoat end face 203 holds out against with the boss face 313 of cutter hub 3, the fraising that (or grinding) has certain length is bored in cylinder axis you face 311, its degree of depth is about in the middle part of cutter hub 3, tang end face 321 auger shell pit is deep to fraising place, drill bit 1 and drill bit adjust thread spindle 4 and are fixedly connected with and insert cutter hub 3 endoporus, the screw thread of drill bit adjustment thread spindle 4 is tightened with tang 320 end screwed hole and is coordinated.Blade holds out against the screwed hole that screw 6 and pad 7 are positioned at annular knurl overcoat 2.Cylinder pillow block cylindrical 312 and drill bit 1 shank all have axially symmetrical cutter groove, blade 5 one end and drill bit 1 shank cutter groove hold out against, blade in one end and annular knurl overcoat 2 holds out against screw 6 and pad 7 holds out against, owing to ignoring the deformation quantity of blade 5, the equal conllinear of screwed hole center line of the cutter groove center line of drill bit 1 shank, the cutter groove center line on cylinder pillow block 301 surface and annular knurl overcoat 2.
As depicted in figs. 1 and 2, machine of the present invention folder counterbore combination drill is applicable to that processing counter bore hole diameters is 20mm, the diameter of bolt is the hole of 13mm.
As shown in Figure 1, drill bit 1 is fluted drill, and hardness, wearability require lower, and 45# high-carbon steel material hardness, wearability, red hardness etc. meet the requirement of drill bit 1 completely, are the materials of desirable making normal drill bit.
As shown in Figures 2 and 3, blade 5 thickness is less, its diameter dimension is larger and its duration is short than drill bit 1 diameter dimension, in order to make both service life close as far as possible, should select different materials respectively, cutting time large for diameter short cutter should adopt the cutter material of the good heat resistances such as steel alloy.
As shown in Figure 2, the cutting angle (A) of blade is 6 °.Large cutting angle can make blade bear less operating pressure, but too small cutting angle then may cause unstable machine cuts, in addition, when cutting speed is higher, the process heat produced can not be discharged from blade fully, cutter thus can be subject to very large thermal force.Take cutting angle to be that the cutter of 6 ° can reach best cutting effect, namely cutting force is little, and cutting edge is stablized, and weares and teares little.
As shown in Figure 3, drill bit 1 shank place has axially symmetrical cutter groove, and in the cylinder pillow block 301 cross section vertical center line both sides branch of cutter hub 3, the vertical center line of two cutter groove cross sections is respectively apart from the vertical center line 2mm of cylinder pillow block 301 cross section.This arrangement is applied to the excessive wearing and tearing causing drill bit 1 of blade radial load in order to reduce with the workpiece to be machined of two blade 5 top contact, the radial load that effectively can reduce drill bit 1 is arranged in two cutter groove dislocation, and make the cutting linear velocity branch of combination drill reasonable, the accident causing burning cutter because cutting speed is different can not be produced.
As shown in Figure 3, non-telescoping because of blade 5, or the characteristic that stroke is less, the cutter groove that cylinder pillow block outer surface 312 place of cutter hub 3 opens and drill bit 1 shank operate on groove conllinear, the vertical center line 2mm of its cutter groove cross section vertical center line distance cylinder pillow block 301 cross section.
As shown in Figure 3, non-telescoping because of blade 5, or the characteristic that stroke is less, the cutter groove conllinear that cylinder pillow block outer surface 312 place of screwed hole and cutter hub 3 that the installation that annular knurl overcoat 2 outer surface 202 place opens holds out against blade screw 6 and pad 7 opens, the vertical center line 2mm of its cutter groove cross section vertical center line distance annular knurl overcoat 2 cross section.
Described embodiment in order to illustrative the present invention, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can modify to described embodiment, therefore the scope of the present invention, should listed by claim of the present invention.
Claims (8)
1. a machine folder counterbore combination drill, it is characterized in that, comprising: drill bit (1), drill bit adjustment thread spindle (4), annular knurl overcoat (2), cutter hub (3), blade (5), blade hold out against screw (6), pad (7); Drill bit (1) is fluted drill, and afterbody connects drill bit adjustment thread spindle (4); Cutter hub (1) front end is provided with cylinder pillow block (301), cutter hub (1) rear end is the Morse's taper bar (330) of band tang (320), cylinder pillow block outer surface (312) coordinates with annular knurl overcoat inner surface (201), annular knurl outer jacket surface (202) drills and reams symmetrical screwed hole, annular knurl overcoat end face (203) holds out against with the boss face (313) of cutter hub (3), (or grinding) is bored in cylinder axis you face (313) fraising, and drill bit (1) and drill bit adjust thread spindle (4) and be fixedly connected with and insert cutter hub (3) endoporus; Blade holds out against the screwed hole that screw (6) and pad (7) are positioned at annular knurl overcoat (2); Cylinder pillow block cylindrical place (312) and drill bit (1) shank all have axially symmetrical cutter groove, blade (5) one end holds out against with drill bit (1) shank cutter groove and coordinates, and the blade in one end and annular knurl overcoat (2) holds out against screw (6) and pad (7) holds out against cooperation.
2. machine folder counterbore combination drill according to claim 1, is characterized in that: the diameter of described drill bit (1) is 13mm, and blade (5) top is 10mm to cylinder pillow block distance between center line.
3. Novel machine folder counterbore combination drill according to claim 2, is characterized in that: the material of described drill bit (1) adopts 45# high-carbon steel.
4. machine folder counterbore combination drill according to claim 3, is characterized in that: the material of described blade (5) adopts steel alloy.
5. machine folder counterbore combination drill according to claim 1, is characterized in that: the cutting angle (A) of described blade (5) is 6 °.
6. machine folder counterbore combination drill according to claim 1, is characterized in that: the distance between the vertical center line of insert groove cross section of described drill bit (1) shank and the vertical center line of drill bit (1) cross section is 2mm.
7. machine folder counterbore combination drill according to claim 6, is characterized in that: the distance between the vertical center line of insert groove cross section of described cylinder pillow block (301) and the vertical center line of cylinder pillow block (301) cross section is 2mm.
8. machine folder counterbore combination drill according to claim 7, is characterized in that: the distance between the vertical center line of screwed hole cross section of described annular knurl overcoat (2) and the vertical center line of annular knurl overcoat (2) cross section is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218918.8A CN104827102A (en) | 2015-05-04 | 2015-05-04 | Mechanically-clamped counterbore combined drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218918.8A CN104827102A (en) | 2015-05-04 | 2015-05-04 | Mechanically-clamped counterbore combined drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104827102A true CN104827102A (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510218918.8A Pending CN104827102A (en) | 2015-05-04 | 2015-05-04 | Mechanically-clamped counterbore combined drill |
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| Country | Link |
|---|---|
| CN (1) | CN104827102A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064249A (en) * | 2016-06-23 | 2016-11-02 | 太原精钨数控刀具有限公司 | Location C-shaped center hole combination drill |
| CN106964822A (en) * | 2017-05-15 | 2017-07-21 | 丹阳市剑庐工具有限公司 | Height turns round handle driver |
| CN111215670A (en) * | 2019-11-05 | 2020-06-02 | 合肥百恒设备模具有限公司 | Through hole chamfering step drill |
| US11407042B2 (en) | 2019-01-07 | 2022-08-09 | Omg, Inc. | Counterbore tool and setting tool for fascia system and installation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059113U (en) * | 1989-11-01 | 1990-07-11 | 邢明喜 | Adjustable clamping tool central hole combined drill |
| EP0520111A1 (en) * | 1991-06-25 | 1992-12-30 | Omi Kogyo Co., Ltd. | Drill with trimming attachment |
| CN201735837U (en) * | 2010-06-23 | 2011-02-09 | 宝山钢铁股份有限公司 | Tool fixture assembly capable of adjusting depth of step drill |
| CN104439434A (en) * | 2014-11-28 | 2015-03-25 | 倪传华 | Machine clamp counter bore combination drill |
| CN204657571U (en) * | 2015-05-04 | 2015-09-23 | 吴江市宏宇机械有限公司 | A kind of machine folder counterbore combination drill |
-
2015
- 2015-05-04 CN CN201510218918.8A patent/CN104827102A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059113U (en) * | 1989-11-01 | 1990-07-11 | 邢明喜 | Adjustable clamping tool central hole combined drill |
| EP0520111A1 (en) * | 1991-06-25 | 1992-12-30 | Omi Kogyo Co., Ltd. | Drill with trimming attachment |
| CN201735837U (en) * | 2010-06-23 | 2011-02-09 | 宝山钢铁股份有限公司 | Tool fixture assembly capable of adjusting depth of step drill |
| CN104439434A (en) * | 2014-11-28 | 2015-03-25 | 倪传华 | Machine clamp counter bore combination drill |
| CN204657571U (en) * | 2015-05-04 | 2015-09-23 | 吴江市宏宇机械有限公司 | A kind of machine folder counterbore combination drill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064249A (en) * | 2016-06-23 | 2016-11-02 | 太原精钨数控刀具有限公司 | Location C-shaped center hole combination drill |
| CN106964822A (en) * | 2017-05-15 | 2017-07-21 | 丹阳市剑庐工具有限公司 | Height turns round handle driver |
| US11407042B2 (en) | 2019-01-07 | 2022-08-09 | Omg, Inc. | Counterbore tool and setting tool for fascia system and installation method |
| CN111215670A (en) * | 2019-11-05 | 2020-06-02 | 合肥百恒设备模具有限公司 | Through hole chamfering step drill |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150812 |