CN203918764U - Big-block engine crankshaft grinding machine fixture - Google Patents

Big-block engine crankshaft grinding machine fixture Download PDF

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Publication number
CN203918764U
CN203918764U CN201420288751.3U CN201420288751U CN203918764U CN 203918764 U CN203918764 U CN 203918764U CN 201420288751 U CN201420288751 U CN 201420288751U CN 203918764 U CN203918764 U CN 203918764U
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China
Prior art keywords
jaw
main shaft
fixture
sliding sleeve
big
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Active
Application number
CN201420288751.3U
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Chinese (zh)
Inventor
冯英华
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HUBEI WEIXIANG NUMERICAL CONTROL MACHINE CO., LTD.
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XIAOGAN WEIXIANG NUMERICAL CONTROL MACHINE TOOL CO Ltd
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Priority to CN201420288751.3U priority Critical patent/CN203918764U/en
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Abstract

The utility model relates to a kind of big-block engine crankshaft grinding machine fixture.Comprise main shaft, on described main shaft, be fixed with jig main body, in described jig main body, be provided with that be sleeved on main shaft can be along main shaft fixture sliding sleeve in axial sliding, on the main shaft of described fixture sliding sleeve front end, be fixed with jaw installation sleeve, described fixture sliding sleeve rear end is provided with the first annular oil groove, and described fixture sliding sleeve front end is provided with the second annular oil groove, has the first oil duct and the second oil duct in described main shaft, described the first oil duct is connected with the first annular oil groove, and described the second oil duct is connected with the second annular oil groove; Described jaw installation sleeve is connected with some along the radially equally distributed jaw of circumference, in described jaw installation sleeve, be fixed with spring, the described spring other end is connected with the contact of jaw inner ring, described jaw outer ring is cone structure, and described fixture sliding sleeve front end is provided with the taper work face matching with jaw outer ring cone structure.The utility model chucking power is reliable and stable, and precision is high.

Description

Big-block engine crankshaft grinding machine fixture
Technical field
The utility model relates to engine crankshaft grinding machine, is specifically related to a kind of big-block engine crankshaft grinding machine fixture.
Background technology
Existing big-block engine crankshaft grinding machine clamp mechanism is by jig main body, bent axle clamping position piece, jig main body configuration clamping cylinder, clamping cylinder, to promote to clamp depression bar clamping bent axle to drive its rotation, there is following defect: during crankshaft grinding, by fixture gravity unbalance, rotate beating of producing, precision is low, and poor sealing, easily enters sewage.
Utility model content
The purpose of this utility model is exactly the defect for prior art, and a kind of big-block engine crankshaft grinding machine fixture is provided.
The technical solution adopted in the utility model is: comprise main shaft, on described main shaft, be fixed with jig main body, in described jig main body, be provided with that be sleeved on main shaft can be along main shaft fixture sliding sleeve in axial sliding, on the main shaft of described fixture sliding sleeve front end, be fixed with jaw installation sleeve, described fixture sliding sleeve rear end is provided with the first annular oil groove, described fixture sliding sleeve front end is provided with the second annular oil groove, in described main shaft, have the first oil duct and the second oil duct, described the first oil duct is connected with the first annular oil groove, and described the second oil duct is connected with the second annular oil groove; Described jaw installation sleeve is connected with some along the radially equally distributed jaw of circumference, in described jaw installation sleeve, be fixed with spring, the described spring other end is connected with the contact of jaw inner ring, described jaw outer ring is cone structure, and described fixture sliding sleeve front end is provided with the taper work face matching with jaw outer ring cone structure.
Further preferred structure, described fixture sliding sleeve center is provided with axis hole, and described axis hole inner ring is provided with seal boss, and described seal boss is connected with main shaft seal, surrounds the first annular oil groove of sealing between the shaft shoulder on described seal boss rear side end face and main shaft; Between described seal boss anterior end surface and main shaft, jaw installation sleeve, surround the second annular oil groove of sealing.
Further preferred structure, described jaw installation sleeve is provided with some along the radially equally distributed guide-track groove of circumference, and described some jaws are separately positioned in some guide-track grooves.
Further preferred structure, described jaw inner ring has clamped the equipped cover of standard.
Further preferred structure, described jig main body front end is provided with sealing plate sealing.
Further preferred structure, is fixed with the round nut for spacing jaw installation sleeve on the main shaft of described jaw installation sleeve front end.
The utility model is simple in structure, and installation and maintenance are convenient, and chucking power is reliable and stable, and precision is high.Crankshaft center position take all the time center top be datum mark, jaw time can not make bent axle depart from center in clamping, is the reliable clamp mechanism of the bent axle clamping rotation of big-block engine main bearing journal, the grinding of connecting rod neck one.
Accompanying drawing explanation
Fig. 1 is the utility model front view;
Fig. 2 is the utility model side view;
Fig. 3 is the utility model partial sectional view.
In figure, 1-main shaft; 2-pull bar; 3-top; The 4-the first sealing ring; The 5-the second sealing ring; 6-screw; 7-jig main body; 8-fixture sliding sleeve; The 9-the three sealing ring; 10-jaw installation sleeve; 11-spring; 12-jaw; 13-sealing plate; 14-screw; The 15-the four sealing ring; 16-round nut; The equipped cover of 17-standard; The 18-the first cannelure; The 19-the second cannelure; The 20-the first oil duct; The 21-the second oil duct.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form and limit the utility model.
As shown in Fig. 1-Fig. 3, the utility model comprises main shaft 1, main shaft 1 center is provided with top 3 by pull bar 2, on described main shaft 1, by screw 6, be fixed with jig main body 7, in described jig main body 7, be provided with that be sleeved on main shaft 1 can be along main shaft fixture sliding sleeve 8 in axial sliding, between described fixture sliding sleeve 8 and main shaft 1, be provided with the first sealing ring 4, the second sealing ring 5 sealings, on the main shaft 1 of described fixture sliding sleeve 8 front ends, be fixed with jaw installation sleeve 10, between described fixture sliding sleeve 8 and jaw installation sleeve 10, be provided with the 3rd sealing ring 9 sealings, described fixture sliding sleeve 8 centers are provided with axis hole, described axis hole inner ring is provided with seal boss 8.1, described seal boss 8.1 is tightly connected with main shaft 1, between the shaft shoulder 1.1 on described seal boss 8.1 rear side end faces and main shaft 1, surround the first annular oil groove 18 of sealing, between described seal boss 8.1 anterior end surface and main shaft 1, jaw installation sleeve 10, surround the second annular oil groove 19 of sealing, in described main shaft 1, have the first oil duct 20 and the second oil duct 21, described the first oil duct 20 is connected with the first annular oil groove 18, and described the second oil duct 21 is connected with the second annular oil groove 19, described jaw installation sleeve 10 is connected with some along the radially equally distributed jaw 12 of circumference, described jaw installation sleeve 10 is provided with some along the radially equally distributed guide-track groove 10.1 of circumference, described some jaws 12 are separately positioned in some guide-track grooves 10.1, in described jaw installation sleeve 10, be fixed with spring 11, described spring 11 other ends are connected with jaw 12 inner ring contacts, described jaw 12 outer rings are cone structure 12.1, and described fixture sliding sleeve 8 front ends are provided with the taper work face 8.2 matching with jaw 12 outer ring cone structures 12.1.
As shown in Figure 1, described jaw 12 inner rings have clamped the equipped cover 17 of standard, and the equipped cover of standard 17 internal diameters can be selected, and the equipped cover 17 of standard can be arranged on different bent axles, meets the clamping of different size bent axle, has reduced like this stroke adjustment amount of fixture itself; Described jig main body 7 front ends are provided with sealing plate 13 sealings by screw 14, are provided with the 4th sealing ring 15 sealings between the equipped cover 17 of described sealing plate 13 and standard, and making whole fixture is hermetically-sealed construction, and the sewage while preventing grinding enters fixture inside; On the main shaft 1 of described jaw installation sleeve 10 front ends, be fixed with the round nut 16 for spacing jaw installation sleeve 10.
Operation principle of the present utility model: when pressure oil is delivered to the first annular oil groove by the first oil duct, fixture sliding sleeve forward end is slided, radially inwardly slides the jaw matching with it, produces clamping force; When pressure oil is delivered to the second annular oil groove by the second oil duct, fixture sliding sleeve slides to the back-end, and the jaw matching with it is radially outwards slided under the effect of spring, and now, fixture unclamps.
The utility model is that slide block is radioactivity motion tighten mode by existing depression bar eccentric clamping Mode change, makes a large amount of minimizing of volume, weight of fixture, and balance and stability during motion is greatly improved; When changing bent axle, can, according to the equipped cover of its diameter dimension adjustment standard, not need to adjust fixture.
The utility model is arranged on main shaft head end, turn round, and the pressure oil of carrying by the oil duct of main shaft makes chuck jaws motion produce clamp and unclamp motion when spindle operation together with main shaft.On main shaft, directly fixed toply, made itself and the concentricity of main shaft keep highly consistent, guaranteed that workpiece beating when processing rotation reduces to minimum state, guarantees crudy.
The content that this description is not described in detail belongs to the known prior art of professional and technical personnel in the field.

Claims (6)

1. a big-block engine crankshaft grinding machine fixture, comprise main shaft, it is characterized in that: on described main shaft, be fixed with jig main body, in described jig main body, be provided with that be sleeved on main shaft can be along main shaft fixture sliding sleeve in axial sliding, on the main shaft of described fixture sliding sleeve front end, be fixed with jaw installation sleeve, described fixture sliding sleeve rear end is provided with the first annular oil groove, described fixture sliding sleeve front end is provided with the second annular oil groove, in described main shaft, have the first oil duct and the second oil duct, described the first oil duct is connected with the first annular oil groove, and described the second oil duct is connected with the second annular oil groove; Described jaw installation sleeve is connected with some along the radially equally distributed jaw of circumference, in described jaw installation sleeve, be fixed with spring, the described spring other end is connected with the contact of jaw inner ring, described jaw outer ring is cone structure, and described fixture sliding sleeve front end is provided with the taper work face matching with jaw outer ring cone structure.
2. big-block engine crankshaft grinding machine fixture according to claim 1, it is characterized in that: described fixture sliding sleeve center is provided with axis hole, described axis hole inner ring is provided with seal boss, described seal boss is connected with main shaft seal, surrounds the first annular oil groove of sealing between the shaft shoulder on described seal boss rear side end face and main shaft; Between described seal boss anterior end surface and main shaft, jaw installation sleeve, surround the second annular oil groove of sealing.
3. big-block engine crankshaft grinding machine fixture according to claim 1, is characterized in that: described jaw installation sleeve is provided with some along the radially equally distributed guide-track groove of circumference, and described some jaws are separately positioned in some guide-track grooves.
4. big-block engine crankshaft grinding machine fixture according to claim 1, is characterized in that: described jaw inner ring has clamped the equipped cover of standard.
5. big-block engine crankshaft grinding machine fixture according to claim 1, is characterized in that: described jig main body front end is provided with sealing plate sealing.
6. big-block engine crankshaft grinding machine fixture according to claim 1, is characterized in that: on the main shaft of described jaw installation sleeve front end, be fixed with the round nut for spacing jaw installation sleeve.
CN201420288751.3U 2014-05-30 2014-05-30 Big-block engine crankshaft grinding machine fixture Active CN203918764U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420288751.3U CN203918764U (en) 2014-05-30 2014-05-30 Big-block engine crankshaft grinding machine fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420288751.3U CN203918764U (en) 2014-05-30 2014-05-30 Big-block engine crankshaft grinding machine fixture

Publications (1)

Publication Number Publication Date
CN203918764U true CN203918764U (en) 2014-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420288751.3U Active CN203918764U (en) 2014-05-30 2014-05-30 Big-block engine crankshaft grinding machine fixture

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107225445A (en) * 2017-07-06 2017-10-03 南通德鑫数控机床有限公司 A kind of numerically-controlled precise cylindrical grinder high-precision hydraulic chuck
CN108032188A (en) * 2017-12-12 2018-05-15 重庆市银钢通科技有限公司 A kind of camshaft roughly grinds fixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107225445A (en) * 2017-07-06 2017-10-03 南通德鑫数控机床有限公司 A kind of numerically-controlled precise cylindrical grinder high-precision hydraulic chuck
CN108032188A (en) * 2017-12-12 2018-05-15 重庆市银钢通科技有限公司 A kind of camshaft roughly grinds fixture

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 432100 No. 222, air route, Hubei, Xiaogan

Patentee after: HUBEI WEIXIANG NUMERICAL CONTROL MACHINE CO., LTD.

Address before: 432100, Hubei, Xiaogan province aviation northbound Liuhe Industrial Park Wei Xiang CNC machine tools Co., Ltd.

Patentee before: Xiaogan Weixiang Numerical Control Machine Tool Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: HUBEI WEIXIANG NUMERICAL CONTROL MACHINE CO., LTD.

Free format text: FORMER NAME: XIAOGAN WEIXIANG NUMERICAL CONTROL MACHINE TOOL CO., LTD.