CN105562838B - The hydraulic pressure gear grinding clamp and its clamping method of a kind of fast changeable large-size workpiece - Google Patents

The hydraulic pressure gear grinding clamp and its clamping method of a kind of fast changeable large-size workpiece Download PDF

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Publication number
CN105562838B
CN105562838B CN201610073368.XA CN201610073368A CN105562838B CN 105562838 B CN105562838 B CN 105562838B CN 201610073368 A CN201610073368 A CN 201610073368A CN 105562838 B CN105562838 B CN 105562838B
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China
Prior art keywords
sleeve
oil
elastic expansion
cylinder pedestal
piston
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CN201610073368.XA
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CN105562838A (en
Inventor
郭召
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Qin Chuan Machine Tool & Tool Group Co Ltd Joint-Stock Co
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Qin Chuan Machine Tool & Tool Group Co Ltd Joint-Stock Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23FMAKING GEARS OR TOOTHED RACKS
    • B23F23/00Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/02Loading, unloading or chucking arrangements for workpieces
    • B23F23/06Chucking arrangements

Abstract

The present invention provides a kind of the hydraulic pressure gear grinding clamp and its clamping method of fast changeable large-size workpiece:Including cylinder pedestal, slip ring, support ring, elastic expansion-sleeve, taper mandrel, terminal pad, connecting shaft, close pearl guide sleeve, footstock and piston, cylinder pedestal is arranged on rotary table top, slip ring constitutes two independent sealed annular oil cavities with cylinder pedestal by radial fit, oil inlet A and B are corresponded to respectively, oil circuit is provided with cylinder pedestal, oil inlet A and B are corresponded to respectively, and respectively lead to two oil pockets above and below piston, taper mandrel is connected as a single entity by terminal pad and connecting shaft with piston, close pearl guide sleeve is installed between footstock and taper mandrel, elastic expansion-sleeve is co-axially mounted with taper mandrel, it is fixed on cylinder pedestal upper end, the present invention is clamped, the action for loosening workpiece drives piston driving taper mandrel to extrude by hydraulic oil, loosen elastic expansion-sleeve realization, the fast automatic clamping of Big sized gear can be achieved, improve processing efficiency and Machinery Tool Automation level.

Description

The hydraulic pressure gear grinding clamp and its clamping method of a kind of fast changeable large-size workpiece
Technical field
The present invention relates to a kind of gear grinding machines gear grinding clamp, and in particular to a kind of big specification plate-like roller gear gear grinding clamp.
Background technology
The Industry Quick Developments such as wind-powered electricity generation, marine settings, military project are, it is necessary to substantial amounts of big specification, high-precision hardened face gear.It is right In the gear that same specification, batch are larger, processing efficiency is improved, in addition to using Efficient lathe, it is necessary to which outfit can be to tooth Wheel carries out the gear grinding clamp of quick-replaceable clamping.
Using manual positioning clamping mode more than current gear grinding clamp, on the one hand, clamping force is relied on and manually adjusted, randomness Greatly, it is difficult to ensure large-size workpiece reliable retention;On the other hand, clamping dismounting non-cutting time is long, it is difficult to meet Big sized gear The demand of batch machining.Meanwhile, clamping element can only one direction adjustment, dismounting gear when, clamping element can not discharge tooth automatically When clamping force adjustment is excessive, easily there is locking phenomenon, it is necessary to tap gear release in wheel.In addition, the radial deformation of clamping element Inequality, causes gear and holder contacts area to reduce, and positioning rigidity is not enough, and clamping element deflection is small, bore with Fixture is coordinated using small―gap suture, adds assembly difficulty.
The content of the invention
It is an object of the invention to solve the problems, such as the quick accurate automated exchanged cutter in big specification plate-like gear batch machining, carry For the hydraulic pressure gear grinding clamp and its clamping method of a kind of fast changeable large-size workpiece (such as plate-like gear).
To reach above-mentioned purpose, present invention employs following technical scheme:
A kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece, the hydraulic pressure gear grinding clamp include rotary table top and It is arranged to be provided with piston, cylinder pedestal in the cylinder pedestal on rotary table top, the cylinder pedestal and is provided with footstock, it is fixed Connecting shaft is provided with heart seat, one end of connecting shaft is connected with piston, the other end is with being arranged at relative can feel relieved on footstock The mobile taper mandrel of seat is connected, and the elastic expansion-sleeve being connected with the cylinder pedestal is provided with the outside of the taper mandrel, living The oil pocket positioned at piston both sides is formed between plug and footstock and cylinder pedestal, cylinder pedestal is with being arranged on the outside of cylinder pedestal Slip ring between there are two independent sealed annular oil cavities, described two independent sealed annular oil cavities respectively with the piston The oil pocket correspondence of both sides is connected, and two phases corresponding with described two independent sealed annular oil cavities respectively are provided with the slip ring Oil inlet even.
The hydraulic pressure gear grinding clamp also includes setting on the table base for being used to support rotary table top, the table base Support is equipped with, the slip ring is arranged on support.
It is provided with the internal face of the slip ring in three circle sealing rings, the outside wall surface of cylinder pedestal and is provided with two ring shapes oil Described two circle annular oil grooves are isolated into two independent sealed annular oil cavities by groove, the sealing ring, and cylinder pedestal can be with respect to institute State slip ring rotation.
The support ring being connected with the cylinder pedestal is provided with the outside of the elastic expansion-sleeve.
Close pearl guide sleeve, the taper mandrel, footstock and close pearl are provided between the taper mandrel and footstock Guide sleeve is co-axially mounted.
The inwall of the elastic expansion-sleeve has and the tapered core axial cone degree identical conical surface.
The elastic expansion-sleeve is axially disposed the equally distributed bar-shaped trough at least eight interval, and the bar-shaped trough is by setting The gap being placed on the elastic expansion-sleeve is connected with elastic expansion-sleeve top, is provided with the inside and outside wall in elastic expansion-sleeve bottom Staggered annular groove.
The clamping method of the hydraulic pressure gear grinding clamp of above-mentioned fast changeable large-size workpiece, comprises the following steps:
When installing workpiece, pressure oil is made after workpiece is placed on the elastic expansion-sleeve, and oil inlet enters and is located at therefrom The oil pocket of piston side, and using taper mandrel described in the pressure oil driving piston driving into the oil pocket along footstock to elasticity Ringfeder one end is moved, and the taper mandrel described in moving process extrudes the elastic expansion-sleeve, elastic expansion-sleeve is occurred radial elastic Deformation, so as to realize to Workpiece clamping;When dismantling workpiece, pressure oil is set to enter from another oil inlet positioned at piston opposite side Oil pocket, meanwhile, make the pressure oil pressure release in the oil pocket of the oil pocket offside, so that the taper mandrel is along footstock to elastic expanding The other end movement of set, the elastic expansion-sleeve described in moving process recovers to elastic deformation state, and stops clamping workpiece.
Beneficial effects of the present invention are embodied in:
The action that the present invention clamped, loosened workpiece drives piston driving taper mandrel to extrude, loosens elasticity by hydraulic oil Ringfeder is realized, the fast automatic clamping of the workpiece such as Big sized gear can be achieved, processing efficiency and Machinery Tool Automation level is improved, Meet large-size workpiece batch machining demand.
Further, close pearl guide sleeve is installed between taper mandrel and footstock of the present invention, interference fit is formed, disappears Except radial clearance, positioning precision is high;And it is rolling pair to be axially moved, motion is flexible, clamps, loosens sensitiveer.
Further, elastic expansion-sleeve wall of the present invention uniform narrow slot vertically, narrow slot correspondence position is provided with gap and passed through Go side portion, bottom inside and outside wall is provided with annular groove staggeredly, can form two-stage Combined elastic deformation, be radially expanded elastic deformation Greatly, contact rigidity of the elastic expansion-sleeve with workpiece inner wall is high, and it is more firm to clamp.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of elastic expansion-sleeve of the present invention;
In figure:Support 1, cylinder pedestal 2, slip ring 3, support ring 4, elastic expansion-sleeve 5, taper mandrel 6, terminal pad 7, end cap 8, Round nut 9, connecting shaft 10, close pearl guide sleeve 11, footstock 12, workpiece 13, piston 14, rotary table top 15, table base 16, Gap 17, narrow slot 18, annular groove 19.
Embodiment
The present invention is elaborated with reference to the accompanying drawings and examples.
Referring to Fig. 1, the hydraulic pressure gear grinding clamp of fast changeable large-size workpiece of the present invention, including support 1, oil cylinder bottom Seat 2, slip ring 3, support ring 4, elastic expansion-sleeve 5, taper mandrel 6, terminal pad 7, end cap 8, round nut 9, connecting shaft 10, close pearl are oriented to Set 11, footstock 12 and piston 14.Support 1 is arranged on table base 16, and cylinder pedestal 2 is fixed on rotary table top On 15, rotary table top 15 is supported on table base 16, and rotary table top 15 can drive cylinder pedestal 12 to rotate.Piston 14 is pacified In cylinder pedestal 2, footstock 12 is mounted on the upper end of cylinder pedestal 2, and connecting shaft 10 is arranged at the hollow of footstock 12 Part, connecting shaft 10 centrally through footstock 12 keep vertical direction, lower end and the piston 14 of connecting shaft 10 are fixed.Slip ring 3 On support 1, slip ring 3 constitutes two independent sealed annular oil cavities with cylinder pedestal 2 by radial fit, respectively with entering Hydraulic fluid port A is connected with B correspondences.Two-way oil circuit is provided with cylinder pedestal 2, oil inlet A and B is corresponded to respectively, two-way oil circuit is respectively with two Individual annular oil cavity correspondence is connected, and up and down the two of the oil cylinder for respectively leading to be made up of cylinder pedestal 2, piston 14 and footstock 12 Individual oil pocket.Terminal pad 7 is fixed on the upper end of conical mandrel 6 (being closed by end cap 8), and taper mandrel 6 passes through terminal pad 7 and connecting shaft 10 and piston 14 be connected as a single entity, the upper end of connecting shaft 10 carries out axial restraint by the round nut 9 that is arranged in terminal pad 7, fixed Close pearl guide sleeve 11 is installed between heart seat 12 and taper mandrel 6, three is co-axially mounted, forms interference fit.Elastic expansion-sleeve 5 and cone Shape mandrel 6 is co-axially mounted, and elastic expansion-sleeve 5 is fixed on the upper end of cylinder pedestal 2.The action for clamping, loosening workpiece passes through hydraulic oil (pressure oil) driving piston 14, which drives taper mandrel 6 to extrude, loosen elastic expansion-sleeve 5 realizes.
The close pearl guide sleeve 11 is the hollow cylinder being made of copper coin, wall perforate, and riveting enters equal diameter in perforate Steel ball, separated between taper mandrel 6 and footstock 12 by steel ball, formed rolling pair.
The internal face of slip ring 3 is provided with three ring annular grooves, is respectively mounted sealing ring, the oil cylinder coordinated with the internal face of slip ring 3 The outside wall surface of base 2 (cylindrical) is provided with two circle annular oil grooves, and slip ring 3 coordinates with cylinder pedestal 2 for gap, and slip ring is fixed, oil cylinder bottom Seat 2 can be rotated relative to slip ring.Two circle annular oil grooves on cylinder pedestal 2 are isolated into two closings by three circle sealing rings in slip ring Annular oil cavity, be provided with oil inlet A and B on slip ring, correspond to two annular oil cavities respectively, two-way oil circuit respectively with cylinder pedestal 2 Two annular oil groove bottom correspondences are connected, and will respectively lead to piston 14 upper and lower sides, two oil by oil inlet A and the B pressure oil being passed through Chamber, realizes the control moved up and down to piston 14.
Referring to Fig. 2, elastic expansion-sleeve 5 (can typically use spring steel, such as 65Mn) endoporus is the conical surface, and taper mandrel 6 is cylindrical For the conical surface, both tapers are identical, and contact.The elastic expansion-sleeve 5 is provided with no less than the 8 uniform (transparent walls of narrow slot 18 vertically Face), width 5mm, narrow slot correspondence position is provided with the gap 17 with linear cutter, and gap 17 is by narrow slot 18 and elastic expansion-sleeve 5 End is connected.Wall is machined with staggered annular groove 19 inside and outside the bottom of elastic expansion-sleeve 5.When taper mandrel 6 is oriented to along close pearl Set 11 is moved downward, and elastic expansion-sleeve 5 is extruded by the conical surface, and elastic expansion-sleeve gap 17 increases, overall uniform outwards spring expanding, edge Radial direction tensioner gear inwall, meanwhile, wall is machined with staggered annular groove 19 inside and outside the bottom of elastic expansion-sleeve 5, makes elastic expanding The deformation of set 5 is more rapid uniform, adds the contact rigidity of elastic expansion-sleeve 5 and workpiece (for example, big specification plate-like gear) inwall.
When installing workpiece 13 (for example, big specification plate-like gear), due to the cylindrical inner wall shape with workpiece 13 of elastic expansion-sleeve 5 Accordingly, workpiece 13, can be enclosed on elastic expansion-sleeve 5 by for example, face of cylinder, and the support ring 4 by being arranged on cylinder pedestal 2 Support, then, makes pressure oil enter the oil pocket for being located at the upside of piston 14 from oil inlet A, and drive piston 14 to drive taper mandrel 6 Moved downward along close pearl guide sleeve 11, because taper mandrel 6 is back taper, therefore elastic expanding is extruded by the conical surface in moving downward Set 5, makes elastic expansion-sleeve 5 occur radial elastic deformation, and tensioner is placed on the workpiece 13 in support ring 4, and realization is clamped to workpiece 13; When dismantling workpiece 13, oil inlet A correspondence oil circuit pressure releases are passed through pressure oil by oil inlet B, pressure oil is entered the downside of piston 14 Oil pocket, driving piston 14 drives taper mandrel 6 to be moved upwards along close pearl guide sleeve 11, disengages elastic expansion-sleeve 5, and elastic expansion-sleeve 5 is extensive Multiple original state, unclamps workpiece 13.

Claims (8)

1. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece, it is characterised in that:The hydraulic pressure gear grinding clamp includes rotation Piston is provided with table with revolvable top (15) and the cylinder pedestal (2) being arranged on rotary table top (15), the cylinder pedestal (2) (14), it is provided with cylinder pedestal (2) in footstock (12), footstock (12) and is provided with connecting shaft (10), connecting shaft (10) One end is connected with piston (14), the other end and the taper mandrel that can be moved relative to footstock (12) being arranged on footstock (12) (6) it is connected, the elastic expansion-sleeve (5) being connected with the cylinder pedestal (2), piston is provided with the outside of the taper mandrel (6) (14) oil pocket positioned at piston (14) both sides is formed between footstock (12) and cylinder pedestal (2), cylinder pedestal (2) is with setting It is placed between the slip ring (3) on the outside of cylinder pedestal (2) with two independent sealed annular oil cavities, it is described two independent sealed Annular oil cavity respectively it is corresponding with the oil pocket of the piston (14) both sides be connected, be provided with the slip ring (3) two respectively with institute State two connected oil inlets of independent sealed annular oil cavity correspondence.
2. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described Hydraulic pressure gear grinding clamp also includes setting on the table base (16) for being used to support rotary table top (15), the table base (16) Support (1) is equipped with, the slip ring (3) is arranged on support (1).
3. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described It is provided with the internal face of slip ring (3) in three circle sealing rings, the outside wall surface of cylinder pedestal (2) and is provided with two circle annular oil grooves, institute State sealing ring and described two circle annular oil grooves are isolated into two independent sealed annular oil cavities, cylinder pedestal (2) can be relatively described Slip ring (3) is rotated.
4. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described The support ring (4) being connected with the cylinder pedestal (2) is provided with the outside of elastic expansion-sleeve (5).
5. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described Be provided with close pearl guide sleeve (11) between taper mandrel (6) and footstock (12), the taper mandrel (6), footstock (12) with And close pearl guide sleeve (11) is co-axially mounted.
6. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described The inwall of elastic expansion-sleeve (5) has and taper mandrel (6) the taper identical conical surface.
7. a kind of hydraulic pressure gear grinding clamp of fast changeable large-size workpiece according to claim 1, it is characterised in that:It is described Elastic expansion-sleeve (5) is axially disposed the equally distributed bar-shaped trough at least eight interval, and the bar-shaped trough is by being arranged at the bullet Property ringfeder (5) on gap (17) connected with elastic expansion-sleeve (5) top, set on the inside and outside wall in elastic expansion-sleeve (5) bottom There is staggered annular groove (19).
8. a kind of clamping method of the hydraulic pressure gear grinding clamp of fast changeable large-size workpiece as claimed in claim 1, its feature It is:Comprise the following steps:
When workpiece (13) are installed, a pressure oil oil inlet therefrom is made after workpiece (13) is placed on the elastic expansion-sleeve (5) The tapered core is driven into the oil pocket positioned at piston (14) side, and using the pressure oil driving piston (14) into the oil pocket Axle (6) is moved along footstock (12) to elastic expansion-sleeve (5) one end, and the taper mandrel (6) described in moving process extrudes the bullet Property ringfeder (5), make elastic expansion-sleeve (5) occur radial elastic deformation so that realize to workpiece (13) clamp;Dismantle workpiece (13) When, pressure oil is entered the oil pocket positioned at piston (14) opposite side from another oil inlet, meanwhile, make the oil pocket of the oil pocket offside Interior pressure oil pressure release, so that other end movement of the taper mandrel (6) along footstock (12) to elastic expansion-sleeve (5), Elastic expansion-sleeve described in moving process (5) recovers to state before elastic deformation, and stops clamping workpiece (13).
CN201610073368.XA 2016-02-02 2016-02-02 The hydraulic pressure gear grinding clamp and its clamping method of a kind of fast changeable large-size workpiece Active CN105562838B (en)

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