CN204247988U - A kind of reverse boring cutter - Google Patents
A kind of reverse boring cutter Download PDFInfo
- Publication number
- CN204247988U CN204247988U CN201420734479.7U CN201420734479U CN204247988U CN 204247988 U CN204247988 U CN 204247988U CN 201420734479 U CN201420734479 U CN 201420734479U CN 204247988 U CN204247988 U CN 204247988U
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- CN
- China
- Prior art keywords
- guiding valve
- cavity
- knife bar
- boring cutter
- reverse boring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The utility model relates to a kind of reverse boring cutter, belong to machining tool technical field, comprise knife bar (1) and cutter hub, guiding valve (2), push rod (4), blanking cover (5), spring (6) and bearing pin (8); Knife bar afterbody is provided with high-pressure coolant through hole (101), middle part is provided with the cavity (102) holding guiding valve, the cavity (103) holding cutter hub, head is provided with the cavity (104) holding push rod, spring and blanking cover, for installing the hole of bearing pin (8); Described guiding valve is installed in cavity (102), knife bar can be prolonged slide axially, cutter hub is installed in cavity (103) by bearing pin, can be that axle freely rotates with bearing pin in cavity, push rod and spring fitting are in cavity (104), push rod can slide axially along knife bar, and blanking cover is fixedly connected with knife bar.The utility model reverse boring cutter solves existing reverse boring cutter complex structure, and manufacturing cost is high, and durability is low, needs the problem of operationally adding cooling system.
Description
Technical field
The utility model relates to a kind of reverse boring cutter, belongs to machining tool technical field.
Background technology
The processing of conventional counter counterbore usually adopts knife bar to pass and processes through hole, from the method manually loading boring cutter in the other direction, working (machining) efficiency is low on the one hand for this method, sometimes also affects by factors such as clamping position, inner cavity of component sizes on the other hand and causes and manually cannot fill cutter.Along with the development of Tool Design technology, there is various forms of reverse boring cutter tool successively, be provided with the function of forward feed, the automatic open closed of cutter holder, the working ability of reverse counterbore is improved constantly, achieve high efficiency processing.Disclose a kind ofly utilize handle of a knife in the other direction and the rotation of the positive direction recovery that realizes cutter hub and the reverse boring cutter opened as invented 201010127220.2.But the design of this type of reverse boring cutter needs to increase corresponding mechanism to realize the automatic open closed function of cutter holder on the one hand, the restriction being subject to handle of a knife usage space on the other hand has to reduce tool stiffness to exchange the convenience of use for, make cutter structure complicated, manufacturing cost increases, and durability reduces.
Summary of the invention
The purpose of this utility model is that manufacturing cost is high, the problem that durability is low, proposes a kind of reverse boring cutter in order to solve existing reverse boring cutter complex structure, and this reverse boring cutter is applicable to the Digit Control Machine Tool with internally cooled-spindle function.
A kind of reverse boring cutter described in the utility model, opens cutter holder by high-pressure coolant pressure, when cooling fluid is closed, closes cutter holder by spring pressure.
The purpose of this utility model is achieved through the following technical solutions:
A kind of reverse boring cutter, comprising: knife bar, guiding valve, cutter hub, push rod, blanking cover, spring and bearing pin; Described knife bar afterbody is provided with high-pressure coolant through hole, and middle part is provided with the cavity holding guiding valve, the cavity holding cutter hub, and head is provided with the cavity holding push rod, spring and blanking cover, for installing the hole of bearing pin; Described guiding valve is installed in cavity, and can prolong cutter spindle and slide forwards, backwards, described cutter hub is installed in cavity by bearing pin, can be that axle freely rotates with bearing pin in cavity, described push rod and spring fitting are in cavity, and push rod can slide axially along knife bar, and blanking cover is fixedly connected with knife bar.
Preferably, be also provided with the hole of installing dog screw in the cavity of described knife bar accommodation guiding valve, be provided with the locating slot matched bottom described guiding valve cylindrical, the two coordinates the circumference location realizing guiding valve.
Preferably, described knife rod head is also provided with internal thread, and blanking cover is provided with external screw thread, and the two coordinates and realizes being fixedly connected with of blanking cover and knife bar.
Preferably, described guiding valve afterbody center is provided with cooling fluid apertures and leads to some cooling fluid through holes at cutting edge place.
Preferably, described guiding valve periphery is provided with at least 1 ring-shaped groove for mounting O-shaped sealing ring.
Preferably, described spool head and cutter hub contact portion adopt designed arc-shaped appearance, to reduce frictional resistance.
Preferably, the upper plane of described spool head and cutter hub contact portion, lower than the blade of described cutter hub, avoids guiding valve to damage blade in motion process.
Preferably, described cutter hub is made up of cutter holder and blade, and the two is fastenedly connected by housing screw.
Preferably, described guiding valve spool head adopts designed arc-shaped appearance and to make on it plane lower than the baseplane of blade, ensure its only with cutter holder contacts side surfaces, avoid guiding valve and damage blade in motion process.
Preferably, described push rod head periphery diameter, slightly wider than bottom periphery diameter, is convenient to bottom and is propped up spring through spring hollow space with head, strengthen the stability of push rod and spring.
Preferably, described push rod head and cutter hub contact portion adopt designed arc-shaped appearance, to reduce resistance to sliding.
Beneficial effect
Reverse boring cutter described in the utility model, directly from front processing, can be particularly suitable for the narrow and small occasion maybe cannot carrying out reverse sinking hole machined by conventional method, effectively reduces running cost and part processing cost during use.
Reverse boring cutter described in the utility model, utilizing lathe high-pressure coolant pressure and spring force to realize cutter holder opens closed, ensure that cutter holder opens and closes by adjustment coolant pressure and spring force reliable and stable, be convenient to carry out cutter holder open/close states and cutting tool state inspection when main shaft stall.
Reverse boring cutter described in the utility model, with cooling fluid, cutting edge is lowered the temperature when realizing reverse boring cutter duty by establishing cooling fluid apertures at guiding valve afterbody center with the some cooling fluid through holes leading to cutting edge place, the use of cooling system is added when eliminating reverse boring cutter work, save resource, reduce energy consumption.
Reverse boring cutter described in the utility model, cutter holder abuts against the side plane of cavity by the pressure that high-pressure coolant produces, and its lower planes and cavity lower planes fit tightly, and guarantees that cutter holder location is reliable, process is stablized.
Reverse boring cutter described in the utility model, by cutter hub being divided into cutter holder and blade two parts, to be conducive on the one hand when blade damage only more allowing blade replacement, be conducive on the other hand reverse boring cutter standardized designs and when not changing lever structure by again designing to cutter holder and blade the processing realizing various shape counterbore.
Reverse boring cutter described in the utility model, rotated in cavity around bearing pin by cutter holder, the unlatching realizing cutter holder closes, effectively make use of knife bar inner space, open compared with the knife bar of cutter holder mode with utilizing centrifugal principle, the effective area of knife bar dangerouse cross-section increases, and improves the rigidity of knife bar to greatest extent.
Reverse boring cutter described in the utility model, guiding valve, push rod head designed arc-shaped appearance, make itself and cutter holder two sides form higher pair friction pair, reduce frictional resistance, cutter holder opened flexibly closed, improve Reliability of Microprocessor.
Reverse boring cutter described in the utility model, its knife bar and cutter holder select high-quality big gun steel alloy, obtain the mechanical property of high-intensity high-tenacity by heat treatment, highly effective rigidity of cutter.
It is simple that reverse boring cutter of the present invention has structure, is easy to processing, installs and use, low cost of manufacture, the feature that durability is high.
Accompanying drawing explanation
Axial sectional view when Fig. 1 is a kind of reverse boring cutter of the utility model embodiment cutter holder open mode;
Axial sectional view when Fig. 2 is a kind of reverse boring cutter of the utility model embodiment cutter holder closure state;
Fig. 3 is A-A sectional view;
Fig. 4 is B-B sectional view;
Fig. 5 is the axial sectional view of knife bar 1;
Fig. 6 is the axial sectional view of guiding valve 2.
Reference numeral: 1-knife bar, 2-guiding valve, 3-cutter holder, 4-push rod, 5-blanking cover, 6-spring, 7-housing screw, 8-bearing pin, 9-O RunddichtringO, 10-blade, 11-dog screw, 101-high-pressure coolant through hole, 102-holds the cavity of guiding valve 2, and 103-holds the cavity of cutter holder 3, and 104-holds the cavity of push rod and spring, 105-screw thread, 106-screw hole, 201-cools fluid apertures, 202-cooling fluid through hole, plane on 203-guiding valve, 204-locating slot, 205-ring-shaped groove.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail, also describe technical problem and the beneficial effect of technical solutions of the utility model solution simultaneously, it is to be noted, described embodiment is only intended to be convenient to understanding of the present utility model, and does not play any restriction effect to it.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, for a kind of reverse boring cutter example based on the present utility model content, comprise knife bar 1, guiding valve 2, cutter holder 3, push rod 4, blanking cover 5, spring 6, housing screw 7, bearing pin 8, O RunddichtringO 9, blade 10, dog screw 11, described knife bar 1 afterbody is provided with high-pressure coolant through hole 101; Middle part is provided with the cavity 102 holding guiding valve 2, the cavity 103 holding cutter holder 3, is provided with the hole 106 of installing dog screw 11 in cavity; Head be provided with hold push rod 4 and spring 6 cavity 104, for assembling the internal thread 105 of blanking cover 5.
As shown in Fig. 6, Fig. 3, guiding valve 2 afterbody center is provided with cooling fluid apertures 201 and leads to some cooling fluid through holes 202 at cutting edge place, periphery is equipped with the ring-shaped groove 205 of several O RunddichtringO 9, locating slot 204 is provided with bottom cylindrical, guiding valve 2 circumference location is realized by dog screw 11, spool head adopts designed arc-shaped appearance and to make on it plane 203 lower than the baseplane of blade 10, ensure its only with cutter holder contacts side surfaces, avoid guiding valve and damage blade in motion process.Blade 10 is connected with cutter holder 3 by housing screw 7.Knife bar 1 is connected by bearing pin 8 with cutter holder 3.
The using method of reverse boring cutter of the present utility model:
As shown in Figure 2, during use, reverse boring cutter proceeds to reverse sinking hole machined position from front through hole; Digit Control Machine Tool exports opens cooling fluid order, high-pressure coolant acts on to guiding valve 2 afterbody through knife bar 1 afterbody liquid-through hole 101, guiding valve 2 overcomes the elastic force of spring 6 along hole 102 slippage under high-pressure coolant effect, promote cutter holder 3 to turn clockwise around bearing pin 8, until cutter holder another side abuts against the side plane of knife bar 1 inner chamber 103, as shown in Figure 1, now the circumferential liquid-through hole 202 of guiding valve 2 is opened, and cooling fluid is sprayed onto cutting edge place; In working angles, cutter holder 3 abuts against the side plane of knife bar 1 inner chamber 103 under high-pressure coolant pressure, spring force, cutting force acting in conjunction, and positioning stablity is reliable; After process finishing, Digit Control Machine Tool exports closes cooling fluid order, and cutter holder 3 is rotated counterclockwise reset around bearing pin 8 under the thrust of spring 6 and push rod 4, cutter holder 3 promotes guiding valve 2 slippage simultaneously, until guiding valve 2 is to the spacing plane of knife bar 1 inner chamber 102 afterbody, now cutter holder 3 is regained completely, as shown in Figure 2.Now spring 6 is still in compressive state, and what cutter holder 3 was kept closed under spring 6 acts on is stable; Reverse boring cutter is retracted to from front through hole and treats that station carries out next working cycles.
Reverse boring cutter of the present utility model designs according to reverse counterbore and through-hole diameter, and the gap of knife bar and through hole is at about 0.5mm, and cutter holder is opened its point of a knife tactical diameter rear and equaled reverse sinking bore dia, and cutting edge is positioned at the sagittal plane of reverse boring cutter bar.
Reverse boring cutter of the present utility model can carry out Seriation Design manufacture according to relevant criterion, by the Secondary Design of cutter holder 3 and more allowing blade replacement, and the processing of applicable different reverse sinking bore dia and difformity counterbore.
Reverse boring cutter of the present utility model is in reverse sinking hole machined, stable cutting process, the cutter that machining accuracy, cutting edge durability comparatively utilize centrifugal principle to open cutter hub is significantly improved, especially to the processing of the difficult-to-machine materials such as magnetism-free stainless steel, in equal material situation, it is more obvious that cutting edge durability improves effect.
Reverse boring cutter of the present utility model, by more changing knife rod and cutter hub material, as selected high-quality big gun steel alloy, the mechanical property of high-intensity high-tenacity is obtained by heat treatment, the rigidity of reverse boring cutter of the present invention can be improved further, expand its rapidoprint scope, improve cutting edge durability.
Test data shows, reverse boring cutter of the present invention and equal size, on an equal basis the reverse boring cutter bearing capacity utilizing inertia force to open cutter holder of material is adopted to improve nearly 1 times, main cause is that the reverse boring cutter utilizing inertia force to open cutter holder is easy in the fracture of dangerouse cross-section place, and cutter less stable.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the utility model; the conversion and replacement expected can be understood; all should be encompassed in and of the present utility modelly comprise within scope, therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (10)
1. a reverse boring cutter, comprises knife bar (1) and cutter hub, it is characterized in that: also comprise guiding valve (2), push rod (4), blanking cover (5), spring (6) and bearing pin (8); Described knife bar (1) afterbody is provided with high-pressure coolant through hole (101), middle part is provided with the cavity (102) holding guiding valve (2), the cavity (103) holding cutter hub, head is provided with the cavity (104) holding push rod (4), spring (6) and blanking cover (5), for installing the hole of bearing pin (8); Described guiding valve (2) is installed in cavity (102), knife bar (1) axial slide anteroposterior can be prolonged, described cutter hub is installed in cavity (103) by bearing pin (8), can in cavity with bearing pin (8) for axle freely rotates, described push rod (4) and spring (6) are installed in cavity (104), push rod (4) can slide axially along knife bar (1), and blanking cover (5) is fixedly connected with knife bar (1).
2. a kind of reverse boring cutter according to claim 1, it is characterized in that: in the cavity (102) of described knife bar (1) accommodation guiding valve (2), be also provided with the hole (106) of installing dog screw (11), be provided with the locating slot (204) matched bottom described guiding valve (2) cylindrical, the two coordinates the circumference location realizing guiding valve (2).
3. a kind of reverse boring cutter according to claim 1, it is characterized in that: described knife bar (1) head is also provided with internal thread (105), blanking cover (5) is provided with external screw thread, and the two coordinates and realizes being fixedly connected with of blanking cover (5) and knife bar (1).
4. a kind of reverse boring cutter according to claim 1, it is characterized in that: described guiding valve (2) afterbody center is provided with cooling fluid apertures (201) and leads to some cooling fluid through holes (202) at cutting edge place, cooling down when working for cutting edge.
5. a kind of reverse boring cutter according to claim 1, it is characterized in that: described guiding valve (2) periphery is provided with at least 1 ring-shaped groove for mounting O-shaped sealing ring (9) (205), for the sealing maintenance between guiding valve (2) and knife bar (1).
6. a kind of reverse boring cutter according to claim 1, is characterized in that: described guiding valve (2) and described push rod (4) head and cutter hub contact portion adopt designed arc-shaped appearance, to reduce frictional resistance.
7. a kind of reverse boring cutter according to claim 1, is characterized in that: the upper plane (203) of described guiding valve (2) head and cutter hub contact portion, lower than the blade of described cutter hub, avoids guiding valve to damage blade in motion process.
8. a kind of reverse boring cutter according to claim 1, is characterized in that: described cutter hub is made up of cutter holder (3) and blade (10), and the two is fastenedly connected by housing screw (7).
9. a kind of reverse boring cutter according to claim 8, it is characterized in that: described guiding valve (2) spool head adopts designed arc-shaped appearance and makes plane on it (203) lower than the baseplane of blade (10), ensure its only with cutter holder (3) contacts side surfaces, avoid guiding valve (2) in motion process, damage blade (10).
10. a kind of reverse boring cutter according to claim 1, it is characterized in that: described push rod (4) head periphery diameter is slightly wider than bottom periphery diameter, be convenient to bottom and prop up spring (6) through spring (6) hollow space with head, strengthen the stability of push rod (4) and spring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734479.7U CN204247988U (en) | 2014-12-01 | 2014-12-01 | A kind of reverse boring cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734479.7U CN204247988U (en) | 2014-12-01 | 2014-12-01 | A kind of reverse boring cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204247988U true CN204247988U (en) | 2015-04-08 |
Family
ID=52952343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420734479.7U Withdrawn - After Issue CN204247988U (en) | 2014-12-01 | 2014-12-01 | A kind of reverse boring cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204247988U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475782A (en) * | 2014-12-01 | 2015-04-01 | 山西北方机械制造有限责任公司 | Reverse boring cutter |
| CN106312107A (en) * | 2016-10-28 | 2017-01-11 | 大理兹飞科技有限公司 | Telescopic tool for machining large-diameter inner hole by numerical control lathe |
| CN106623989A (en) * | 2017-01-17 | 2017-05-10 | 中冶陕压重工设备有限公司 | Machining method for bulged cavity part |
-
2014
- 2014-12-01 CN CN201420734479.7U patent/CN204247988U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475782A (en) * | 2014-12-01 | 2015-04-01 | 山西北方机械制造有限责任公司 | Reverse boring cutter |
| CN104475782B (en) * | 2014-12-01 | 2017-05-31 | 山西北方机械制造有限责任公司 | A kind of reverse boring cutter |
| CN106312107A (en) * | 2016-10-28 | 2017-01-11 | 大理兹飞科技有限公司 | Telescopic tool for machining large-diameter inner hole by numerical control lathe |
| CN106312107B (en) * | 2016-10-28 | 2018-01-26 | 大理兹飞科技有限公司 | A kind of expandable tool for the processing of numerically controlled lathe larger diameter internal bore |
| CN106623989A (en) * | 2017-01-17 | 2017-05-10 | 中冶陕压重工设备有限公司 | Machining method for bulged cavity part |
| CN106623989B (en) * | 2017-01-17 | 2018-09-11 | 中冶陕压重工设备有限公司 | A kind of processing method of bulge inner cavity part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150408 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned |