CN203696447U - High-speed automatic extending head - Google Patents
High-speed automatic extending head Download PDFInfo
- Publication number
- CN203696447U CN203696447U CN201320803030.7U CN201320803030U CN203696447U CN 203696447 U CN203696447 U CN 203696447U CN 201320803030 U CN201320803030 U CN 201320803030U CN 203696447 U CN203696447 U CN 203696447U
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- CN
- China
- Prior art keywords
- main shaft
- upper box
- knife
- central passage
- extension head
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Abstract
The utility model discloses a high-speed automatic extending head which is compact in structure and transmits torque through an internal meshed gear pair. A longitudinal clearance which is 0.1-0.3mm in length is reserved between a gland and an ejector rod; during mounting and use, a fine-adjustment tooth side clearance is formed between an inner gear and an outer gear for transmitting the torque of a machine tool main shaft, so that the center of the machine tool main shaft and the center of a main shaft of the extending head can be concentric, the service life of the extending head is prolonged, and the processing rotating speed of the extending head is increased; moreover, the outer side of a pull rod is sleeved with a spring, so that the machine tool main shaft can realize cutter striking operation only by counteracting lower force. The maximum operation rotating speed of the extending head disclosed by the utility model is 4,000rpm, the power is 20kw, the maximum torque is 800NM, and the high-speed automatic extending head is suitable for high-rotating-speed die processing.
Description
Technical field
The utility model relates to a kind of automated machine tool accessory, especially relates to a kind of High-Speed Automatic Extension Head.
Background technology
Along with the fast development of advanced manufacturing industry, become strong all the more for the demand of high rotating speed accessory head, Extension Head is as the important member of accessory head family, and following development trend is also to guarantee to realize high-speed cutting under constitutionally stable prerequisite.In existing Extension Head, the power of machine tool chief axis is generally delivered on Extension Head main shaft by spline, and Extension Head main shaft need bear extra moment of flexure in real work, if machine tool chief axis and Extension Head main shaft decentraction, easily causing spline housing and Extension Head main shaft to skid, wear and tear even lost efficacy, when needs are frequently changed spline housing, machine finish is had a negative impact, also restrict the raising of Extension Head rotating speed simultaneously.And the reason that causes machine tool chief axis and Extension Head main shaft decentraction is: the Extension Head alignment of shafts depends on the machining accuracy of Extension Head upper box and the assembly precision of Extension Head main shaft and Extension Head main shaft bearing, and the short transverse size of Extension Head upper box own is larger,, inevitably there is certain deviation in the easy like this Extension Head alignment of shafts and the machine ram alignment of shafts decentraction of causing.Except the problems referred to above, the Extension Head product that domestic manufacturer produces is at present generally in the relatively low stage of rotating speed, maximum (top) speed can only reach 2000rpm conventionally, compares the larger gap of existence with external similar advanced product, cannot meet the needs of advanced manufacturing industry for high rotating speed Extension Head.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, provide a kind of High-Speed Automatic Extension Head.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of High-Speed Automatic Extension Head, comprise handle of a knife, upper box, lower chain wheel, main shaft and be arranged on upper box and main shaft between transmission mechanism, described upper box is connected with described lower tooth disk centring, on described upper box, be provided with multiple pull head oil cylinder blind rivets, described upper box is connected with the ram oil drain pan of pull head oil cylinder by described multiple pull head oil cylinder blind rivets, on described handle of a knife, be provided with main shaft blind rivet, described transmission mechanism is connected with described handle of a knife, described transmission mechanism comprises the drive plate of coaxial setting, internal gear and external gear, the outside that described drive plate is set in described handle of a knife is threaded with described handle of a knife, described internal gear is fixedly connected with alignment pin by screw with described drive plate, the outside that described inner gear housing is located at described external gear is meshed with described external gear, described outer gear sleeve is located at the outside of described main shaft and is felt relieved and be connected by spline with described main shaft, in described upper box, be provided with pull bar, described pull bar overlaps with the center line of described handle of a knife, the top of described pull bar is arranged with push rod, the upper end of described push rod is arranged with gland, axial clearance between described push rod and described gland is 0.1 ~ 0.3mm, between described push rod and described drive plate, be provided with O RunddichtringO, described gland is threaded with described drive plate, the bottom of described pull bar is connected with pulling claw fixed block, on described pulling claw fixed block, be connected with pulling claw, the outside of described pull bar is arranged with spring, described spring is compressed by described push rod.
The utility model is delivered to machine tool chief axis power on Extension Head main shaft by meshed gears pair in drive plate and a group, handle of a knife and drive plate are threaded, the internal gear of gear pair is fixedly connected with alignment pin by screw with drive plate, thereby machine tool chief axis, handle of a knife, the center line of drive plate and internal gear (referred to as " the first assembly ") overlaps, outer gear sleeve is located at the outside of main shaft and is felt relieved and be connected by spline with main shaft, thereby external gear, the center line of main shaft and upper box (referred to as " the second assembly ") overlaps, therefore can realize the concentric of machine tool chief axis and Extension Head main shaft as long as guarantee that the center line of the first assembly and the second assembly overlaps.The secondary transmitting torque of meshed gears in the utility model adopts, due to interior, between external gear, there is backlash, can be internal while installing and using like this, left and right fine setting is carried out in the position of external gear, be equivalent to the first assembly and the second assembly center line to finely tune, and the first assembly is connected with push rod by gland with the second assembly, if being face, the lateral contact of gland and push rod contacts, can produce larger frictional resistance and make the fine setting of the first assembly and the second assembly be difficult to carry out, therefore the utility model leaves the axial clearance of 0.1 ~ 0.3mm between gland and push rod, thereby make the fine setting of the first assembly and the second assembly center line be achieved, finally make machine tool chief axis and the Extension Head can be concentric, improve the machining accuracy of lathe.
If the axial clearance between gland and push rod is less, gland and push rod likely can produce frictional resistance by lateral contact; If the axial clearance between gland and push rod is larger, can make the seal failure of the O RunddichtringO between push rod and drive plate, therefore the axial clearance between gland and push rod is set as 0.1 ~ 0.3mm by the utility model, by O RunddichtringO, sealing function played in this axial clearance.
The sheathed spring in outside of pull bar, Extension Head is forged a knife in course of action like this, pull head oil cylinder pulling claw tension pull head oil cylinder blind rivet, when machine tool chief axis pulling claw unclamps, machine tool chief axis only need overcome less power (being spring force) can realize the action of forging a knife.Here use spring and do not use the reason of dish spring to mainly contain two aspects: the lathe of (1) standard and the broach force of Extension Head are about 1.5T left and right, machine tool chief axis has adopted dish spring broaching tool, if Extension Head also adopts dish spring broaching tool, machine tool chief axis need to overcome at least broach force of twice and just can make the pulling claw of Extension Head open like this, and the oil cylinder of forging a knife of current domestic machine tool chief axis can only overcome the broach force of a times; (2) spring plays aiding support effect simultaneously, makes Extension Head blind rivet in a high position, facilitates machine tool chief axis to capture Extension Head.
Between the sidewall of described main shaft and described upper box, be provided with some groups of angular contact ball bearings, the bottom of the angular contact ball bearing described in every group is provided with a protective jacket.Angular contact ball bearing can bear compared with heavy load, and in protecting main shaft better, the space taking is less, makes the more compact structure of Extension Head; Protective jacket diagonal angle contact ball bearing rises and supports and protective effect, can effectively prevent that the lubricating grease of angular contact ball bearing is dirty.
Also comprise cooling body, described cooling body comprises the cooling tube being connected and the hydraulic quick coupler being arranged on described upper box, and the outlet of described cooling tube is near the nose of Extension Head.Cooling water enters cooling tube and is ejected into the nose of Extension Head from the outlet of cooling tube through hydraulic quick coupler, and can manually adjust the spray angle of cooling tube outlet according to concrete processing environment in actual applications.
Also comprise proof mechanism of water, described proof mechanism of water comprises rain visor, the waterproof ring of spacer and labyrinth structure, described rain visor is wholely set the outer peripheral edges in the bottom of described internal gear, described waterproof ring is set in the outside of described main shaft, described spacer is set in the outside of described main shaft, the upper surface of described spacer contacts with the bottom surface of described external gear, thereby being wholely set bulge loop downwards, the outer peripheral edges of described spacer on described spacer, form the cavity of bottom opening, described spacer is set in the outside of the upper end of described waterproof ring, the upper-end part of driving of described waterproof ring is in described cavity, the sidewall of described upper box is provided with osculum near described waterproof ring place.The reserved rain visor of outer peripheral edges in the bottom of internal gear, guarantees that cooling water drips along being combined into water droplet after the outer wall of internal gear flow to its bottom, rather than inwardly flows; The waterproof ring of spacer and labyrinth structure can guarantee that cooling water can only discharge along osculum, rather than in entering angle contact ball bearing.
Also comprise center inflatable body, described center inflatable body comprises the first central passage, the second central passage, the 3rd central passage and the 4th central passage that are connected, the first described central passage is arranged in described main shaft blind rivet, the second described central passage is arranged in described handle of a knife, the 3rd described central passage is arranged in described pull bar, and the 4th described central passage is arranged in described pulling claw fixed block.The setting of center blowing structure, has realized the center blowing function of the utility model Extension Head, prevents in the process of forging a knife that iron filings and foreign material enter main shaft.
Described upper box and described ram oil drain pan junction are provided with square rubber seal.When square rubber seal can prevent Extension Head work, cooling water and iron filings enter in lower chain wheel.
Compared with prior art, the utility model has the advantage of: the utility model Extension Head compact conformation, the secondary transmitting torque of meshed gears in adopting, between gland and push rod, leave the axial clearance of 0.1 ~ 0.3mm, between the inside and outside gear due to transmission lathe main-shaft torque while installing and using, there is fine-tuning backlash, make can realizing with one heart of machine tool chief axis center and the Extension Head alignment of shafts, improved service life and the processing rotating speed of Extension Head; And at the sheathed spring in the outside of pull bar, make machine tool chief axis only need overcome less power and can realize the action of forging a knife.The maximum functional rotating speed 4000rpm of the utility model Extension Head, power 20kw, peak torque 800NM, is applicable to high rotating speed Mould Machining.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment;
Fig. 2 is A place enlarged drawing in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in the figure, a kind of High-Speed Automatic Extension Head, comprise handle of a knife 1, upper box 2, lower chain wheel 3, main shaft 4 and be arranged on upper box 2 and main shaft 4 between transmission mechanism and cooling body, proof mechanism of water and center inflatable body; Upper box 2 is connected with lower chain wheel 3 centering, on upper box 2, be provided with four pull head oil cylinder blind rivets 21, upper box 2 is connected with the ram oil drain pan (not shown) of pull head oil cylinder by four pull head oil cylinder blind rivets 21, upper box 2 is provided with square rubber seal 91 with ram oil drain pan junction, on handle of a knife 1, be provided with main shaft blind rivet 11, transmission mechanism is connected with handle of a knife 1; Transmission mechanism comprises drive plate 51, internal gear 52 and the external gear 53 of coaxial setting, the outside that drive plate 51 is set in handle of a knife 1 is threaded with handle of a knife 1, internal gear 52 is fixedly connected with alignment pin (not shown) by screw (not shown) with drive plate 51, the outside that internal gear 52 is set in external gear 53 is meshed with external gear 53, and the outside that external gear 53 is set in main shaft 4 is connected by spline 54 centering with main shaft 4; In upper box 2, be provided with pull bar 22, pull bar 22 overlaps with the center line of handle of a knife 1, the top of pull bar 22 is arranged with push rod 23, pull bar 22 is threaded with push rod 23, the upper end of push rod 23 is arranged with gland 24, axial clearance a between push rod 23 and gland 24 is 0.2mm, between push rod 23 and drive plate 51, be provided with O RunddichtringO 92, gland 24 is threaded with drive plate 51, the bottom of pull bar 22 is connected with pulling claw fixed block 25, on pulling claw fixed block 25, be connected with pulling claw 26, the outside of pull bar 22 is arranged with spring 27, and spring 27 is compressed by push rod 23; Between the sidewall of main shaft 4 and upper box 2, be provided with three groups of angular contact ball bearings 41, the bottom of every group of angular contact ball bearing 41 is provided with a protective jacket 42.
Cooling body comprises the cooling tube 61 being connected and is arranged on the hydraulic quick coupler 62 on upper box 2, and the outlet 63 of cooling tube 61 is near the nose of Extension Head, proof mechanism of water comprises rain visor 71, the waterproof ring 73 of spacer 72 and labyrinth structure, rain visor 71 is wholely set the outer peripheral edges in the bottom of internal gear 52, waterproof ring 73 is set in the outside of main shaft 4, spacer 72 is set in the outside of main shaft 4, the upper surface of spacer 72 contacts with the bottom surface of external gear 53, thereby being wholely set bulge loop 721 downwards, the outer peripheral edges of spacer 72 on spacer 72, form the cavity 722 of bottom opening, spacer 72 is set in the outside of the upper end of waterproof ring 73, the upper-end part of driving of waterproof ring 73 is in cavity 722, the sidewall of upper box 2 is provided with osculum 74 near waterproof ring 73 places, center inflatable body comprises the first central passage 81, the second central passage 82, the 3rd central passage 83 and the 4th central passage 84 that are connected, the first central passage 81 is arranged in main shaft blind rivet 11, the second central passage 82 is arranged in handle of a knife 1, the 3rd central passage 83 is arranged in pull bar 22, and the 4th central passage 84 is arranged in pulling claw fixed block 25.
Under above-mentioned automatic Extension Head, chain wheel exposes, and upper box 2 is connected with the ram oil drain pan (not shown) of pull head oil cylinder by four pull head oil cylinder blind rivets 21, and this syllogic pull head oil cylinder can be realized Extension Head and forges a knife and grab cutter function.In the time that needs Extension Head is forged a knife, four pull head oil cylinder blind rivets 21 of four pull head oil cylinder pulling claw (not shown) tensions, machine tool chief axis pulling claw (not shown) is opened, main spindle broach bar (not shown) is with pulling claw (not shown) downward extrolling peak with heading main shaft blind rivet 11 under hydraulic coupling drives, drive Extension Head handle of a knife 1 to move downward, handle of a knife 1 is connected with drive plate 51, drive push rod 23 and the pull bar 22 being fixedly connected with push rod 23 to do the motion of Compress Spring 27, finally make Extension Head pulling claw 26 unclamp, realize the action of forging a knife.Otherwise, four pull head oil cylinder blind rivets of four pull head oil cylinder pulling claw tensions, when machine tool chief axis pulling claw is firmly grasped, main spindle broach bar, with pulling claw drawing peak with heading main shaft blind rivet 11 upwards under hydraulic coupling drives, drives Extension Head handle of a knife 1 to move upward, and handle of a knife 1 is connected with drive plate 51, gland 24 is fixed on drive plate 51, gland 24 drives push rod 23 to move upward with the pull bar 22 being fixedly connected with push rod 23, and Extension Head pulling claw 26 is strained, and grabs cutter action thereby realize Extension Head.
Above-mentioned automatic Extension Head compact conformation, multiple functional, possesses automatic forging and grabs the functions such as cutter, the alignment of shafts are blown, cutter is cooling, its maximum functional rotating speed 4000rpm, and power 20kw, peak torque 800NM, is applicable to high rotating speed Mould Machining.
Claims (6)
1. a High-Speed Automatic Extension Head, comprise handle of a knife, upper box, lower chain wheel, main shaft and be arranged on upper box and main shaft between transmission mechanism, described upper box is connected with described lower tooth disk centring, on described upper box, be provided with multiple pull head oil cylinder blind rivets, described upper box is connected with the ram oil drain pan of pull head oil cylinder by described multiple pull head oil cylinder blind rivets, on described handle of a knife, be provided with main shaft blind rivet, it is characterized in that described transmission mechanism is connected with described handle of a knife, described transmission mechanism comprises the drive plate of coaxial setting, internal gear and external gear, the outside that described drive plate is set in described handle of a knife is threaded with described handle of a knife, described internal gear is fixedly connected with alignment pin by screw with described drive plate, the outside that described inner gear housing is located at described external gear is meshed with described external gear, described outer gear sleeve is located at the outside of described main shaft and is felt relieved and be connected by spline with described main shaft, in described upper box, be provided with pull bar, described pull bar overlaps with the center line of described handle of a knife, the top of described pull bar is arranged with push rod, the upper end of described push rod is arranged with gland, axial clearance between described push rod and described gland is 0.1 ~ 0.3mm, between described push rod and described drive plate, be provided with O RunddichtringO, described gland is threaded with described drive plate, the bottom of described pull bar is connected with pulling claw fixed block, on described pulling claw fixed block, be connected with pulling claw, the outside of described pull bar is arranged with spring, described spring is compressed by described push rod.
2. the High-Speed Automatic Extension Head of one according to claim 1, is provided with some groups of angular contact ball bearings between the main shaft described in it is characterized in that and the sidewall of described upper box, and the bottom of the angular contact ball bearing described in every group is provided with a protective jacket.
3. the High-Speed Automatic Extension Head of one according to claim 2, characterized by further comprising cooling body, described cooling body comprises the cooling tube being connected and the hydraulic quick coupler being arranged on described upper box, and the outlet of described cooling tube is near the nose of Extension Head.
4. the High-Speed Automatic Extension Head of one according to claim 3, characterized by further comprising proof mechanism of water, described proof mechanism of water comprises rain visor, the waterproof ring of spacer and labyrinth structure, described rain visor is wholely set the outer peripheral edges in the bottom of described internal gear, described waterproof ring is set in the outside of described main shaft, described spacer is set in the outside of described main shaft, the upper surface of described spacer contacts with the bottom surface of described external gear, thereby being wholely set bulge loop downwards, the outer peripheral edges of described spacer on described spacer, form the cavity of bottom opening, described spacer is set in the outside of the upper end of described waterproof ring, the upper-end part of driving of described waterproof ring is in described cavity, the sidewall of described upper box is provided with osculum near described waterproof ring place.
5. according to the High-Speed Automatic Extension Head of one described in claim 1 or 2 or 3 or 4, characterized by further comprising center inflatable body, described center inflatable body comprises the first central passage, the second central passage, the 3rd central passage and the 4th central passage that are connected, the first described central passage is arranged in described main shaft blind rivet, the second described central passage is arranged in described handle of a knife, the 3rd described central passage is arranged in described pull bar, and the 4th described central passage is arranged in described pulling claw fixed block.
6. the High-Speed Automatic Extension Head of one according to claim 5, is characterized in that described upper box and described ram oil drain pan junction are provided with square rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320803030.7U CN203696447U (en) | 2013-12-09 | 2013-12-09 | High-speed automatic extending head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320803030.7U CN203696447U (en) | 2013-12-09 | 2013-12-09 | High-speed automatic extending head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203696447U true CN203696447U (en) | 2014-07-09 |
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ID=51046946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320803030.7U Withdrawn - After Issue CN203696447U (en) | 2013-12-09 | 2013-12-09 | High-speed automatic extending head |
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| Country | Link |
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| CN (1) | CN203696447U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666241A (en) * | 2016-03-15 | 2016-06-15 | 宁波海天精工股份有限公司 | Extending head with center discharging water |
| CN107225425A (en) * | 2017-07-24 | 2017-10-03 | 东莞市科隆实业有限公司 | The electro spindle rotor structure of electro spindle broaching tool structure and the application structure |
| CN109604647A (en) * | 2018-12-25 | 2019-04-12 | 陕西科技大学 | Numerically-controlled machine tool transmission system |
-
2013
- 2013-12-09 CN CN201320803030.7U patent/CN203696447U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666241A (en) * | 2016-03-15 | 2016-06-15 | 宁波海天精工股份有限公司 | Extending head with center discharging water |
| CN105666241B (en) * | 2016-03-15 | 2017-10-10 | 宁波海天精工股份有限公司 | A kind of central water outlet Extension Head |
| CN107225425A (en) * | 2017-07-24 | 2017-10-03 | 东莞市科隆实业有限公司 | The electro spindle rotor structure of electro spindle broaching tool structure and the application structure |
| CN109604647A (en) * | 2018-12-25 | 2019-04-12 | 陕西科技大学 | Numerically-controlled machine tool transmission system |
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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 | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20220706 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20220706 |