CN202592138U

CN202592138U - Special fixture for excircle grinding of outer sleeve of constant velocity cardan joint of driving end

Info

Publication number: CN202592138U
Application number: CN201220265059XU
Authority: CN
Inventors: 孟祥龙
Original assignee: JILIN NORTHERN JIEKAI SHAFT CO Ltd
Current assignee: JILIN NORTHERN JIEKAI SHAFT CO Ltd
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2012-12-12
Anticipated expiration: 2022-06-06

Abstract

The utility model discloses a special fixture for excircle grinding of an outer sleeve of a constant velocity cardan joint of a driving end. A through-hole is arranged axially at one end of the fixture, a push-and-pull mandrel is installed inside the through-hole, an expansion sleeve is movably connected with a fixture body, radial through-holes in the same direction are arranged on the expansion sleeve, the fixture body and the push-and-pull mandrel, push-and-pull keys are installed inside through-holes and are movably connected with through-holes, limiting sleeves which are used for preventing push-and-pull keys from sliding out of through-holes are installed outside through-holes, the outer portion of the end of the fixture body, which is provided with the through-hole axially, is a cone, a conical surface which corresponds with the surface of the cone of the fixture body is arranged on the expansion sleeve, a positioner is installed at the front end of the fixture body, a positioning block which is movably connected is sleeved on the positioner, the positioning block can be positioned at the bottom of an inner cavity of the outer sleeve of the cardan joint automatically and accurately, and the expansion sleeve is used for tensioning the outer sleeve of the cardan joint, so that the outer sleeve of the cardan joint can be fixed on a grinding machine accurately and reliably for machining, and quality problems of the low positioning precision of the ground outer sleeve of the cardan joint and the out-of-tolerance of the ovality of an excircle in the prior art can be solved.

Description

A kind of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding

Technical field

The utility model provides a kind of special fixture, is specially a kind of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding.

Background technology

Drive end constant velocity cardan joint overcoat is the vital part in the power transmission shaft; Especially the tolerance of its two sections cylindricals is little requires high with ovality; Determined the complexity and the higher quality requirement of its processing, traditional processing method is to rise to press from both sides the inner cylinder face of overcoat, adds firmly the bottom surface of overcoat inner chamber to be close to the ringfeder end face by hand man-hour; Because manual can not the assurance is close to overcoat inner chamber bottom surface and location ringfeder end face 100%; Ringfeder end face and inner chamber bottom surface can produce the gap when reaching the ringfeder rising, so can't guarantee positioning accuracy, make that the cylindricalo grinding position of overcoat is overproof; Because the wearing and tearing of the pull bar in the ringfeder, the ovality of overcoat cylindrical are difficult to guarantee.Therefore because overcoat cylindricalo grinding is final finished size, and be connected with the differential mechanism of engine, will directly influence the quality of whole power transmission shaft, serious meeting phenomenon such as leakage of oil, difficult installation occurs and causes that client complains even car load is recalled.

Summary of the invention

The purpose of the utility model provides a kind of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding; Can solve mill rear universal joint overcoat positioning accuracy difference of the prior art and the overproof quality problems of cylindrical ovality; Reduce labour intensity simultaneously, enhance productivity and reduce cost.

The technical scheme of the utility model is: a kind of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding is characterized in that: an end that is fixed to the clamp body on the grinding machine spindle end face through construction bolt is axially arranged with through hole, and the push-and-pull mandrel of flexible connection is housed in the through hole; The ringfeder of flexible connection is housed on the clamp body; Ringfeder, clamp body, push-and-pull mandrel are provided with equidirectional radial direction through hole, and the push-and-pull key is housed in the through hole, and push-and-pull key and through hole flexibly connect; Through hole is equipped with outward and prevents that the push-and-pull key from skidding off the stop collar of through hole; Stop collar is connected through bolt and clamp body, and the outside that said clamp body is axially arranged with an end of through hole is a cone, and described ringfeder is provided with and the corresponding conical surface in clamp body cone surface; The clamp body front end is equipped with locator; Locator is connected through locator bolt and clamp body, is with the locating piece of flexible connection and the jump ring of restriction locating piece on the locator, and locator is that the activity of cambered surface dome contacts with locating piece; The cushion rubber that is used for setting upright locating piece also is housed between locator and the locating piece, and cushion rubber leans on self elasticity to be embedded in the groove on the locator.

The utility model has the advantages that: the intracavity bottom that is positioned the universal joint overcoat that locating piece can be automatic accurate; Utilize ringfeder with universal joint overcoat tensioner again, can accurately, reliably the universal joint overcoat be fixed on the anchor clamps like this and process, solved mill rear universal joint overcoat positioning accuracy difference of the prior art and the overproof quality problems of cylindrical ovality; Also reduced simultaneously labour intensity; Improve production efficiency effectively, improved the qualification rate of product, reduced production cost.

Description of drawings

Accompanying drawing is a kind of structural representation of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding.

1 construction bolt, 2 bolts, 3 ringfeders, 4 locators, 5 locating pieces, 6 cushion rubbers, 7 jump rings, 8 tail centres, 9 universal joint overcoats, 10 locator bolts, 11 push-and-pull keys, 12 stop collars, 13 clamp bodies, 14 push-and-pull mandrels among the figure.

The specific embodiment

A kind of special fixture of drive end constant velocity cardan joint overcoat cylindrical grinding, an end that is fixed to the clamp body 13 on the grinding machine spindle end face through construction bolt 1 is axially arranged with through hole, and the push-and-pull mandrel 14 of flexible connection is housed in the through hole; The ringfeder 3 of flexible connection is housed on the clamp body; Ringfeder, clamp body, push-and-pull mandrel are provided with equidirectional radial direction through hole, and push-and-pull key 11 is housed in the through hole, and push-and-pull key and through hole flexibly connect; Through hole is equipped with outward and prevents that the push-and-pull key from skidding off the stop collar 12 of through hole; Stop collar is connected through bolt 2 and clamp body, and the outside that said clamp body is axially arranged with an end of through hole is a cone, and described ringfeder is provided with and the corresponding conical surface in clamp body cone surface; The clamp body front end is equipped with locator 4; Locator is connected through locator bolt 10 and clamp body, is with the locating piece 5 of flexible connection and the jump ring 7 of restriction locating piece on the locator, and locator is that the activity of cambered surface dome contacts with locating piece; The cushion rubber 6 that is used for setting upright locating piece also is housed between locator and the locating piece, and cushion rubber leans on self elasticity to be embedded in the groove on the locator.

Add when being sleeved on universal joint overcoat 9 on the ringfeder man-hour, the convex arc surface of locating piece and locator interacts, and locating piece is positioned automatic accurately the intracavity bottom of universal joint overcoat; Guaranteed the axial location precision of universal joint overcoat, start button, operation tail centre 8 moves; Hold out against the centre bore of universal joint overcoat, operation hydraulic cylinder pulling push-and-pull mandrel makes the push-and-pull mandrel drive ringfeder through the push-and-pull key and is moved to the left; This moment, ringfeder was with respect to the clamp body displacement, and the inclined-plane interaction that matches on ringfeder and the clamp body makes the outside rising of ringfeder, and rising ringfeder is with universal joint overcoat tensioner; This moment, the universal joint overcoat was fixed on the special fixture solid and reliablely; Through using the mode of ringfeder tensioner, can accurately, reliably the universal joint overcoat be fixed on and carry out grinding on the anchor clamps, behind the mill when the push-and-pull mandrel moves right; The inclined-plane that matches on ringfeder and the clamp body inwardly shrinks ringfeder under the effect of elastic force, unclamps workpiece.The utility model has solved mill rear universal joint overcoat positioning accuracy difference of the prior art and the overproof quality problems of cylindrical ovality, has reduced labor intensity of operating personnel simultaneously, has improved production efficiency, has improved the qualification rate of product, has reduced production cost.

Claims

1. the special fixture of a drive end constant velocity cardan joint overcoat cylindrical grinding, it is characterized in that: an end that is fixed to the clamp body on the grinding machine spindle end face through construction bolt is axially arranged with through hole, and the push-and-pull mandrel of flexible connection is housed in the through hole; The ringfeder of flexible connection is housed on the clamp body; Ringfeder, clamp body, push-and-pull mandrel are provided with equidirectional radial direction through hole, and the push-and-pull key is housed in the through hole, and push-and-pull key and through hole flexibly connect; Through hole is equipped with outward and prevents that the push-and-pull key from skidding off the stop collar of through hole; Stop collar is connected through bolt and clamp body, and the outside that said clamp body is axially arranged with an end of through hole is a cone, and described ringfeder is provided with and the corresponding conical surface in clamp body cone surface; The clamp body front end is equipped with locator; Locator is connected through locator bolt and clamp body, is with the locating piece of flexible connection and the jump ring of restriction locating piece on the locator, and locator is that the activity of cambered surface dome contacts with locating piece; The cushion rubber that is used for setting upright locating piece also is housed between locator and the locating piece, and cushion rubber leans on self elasticity to be embedded in the groove on the locator.