Horizontal broaching machine inside broaching spline parts tooling improvement optimization

Horizontal broaching machine inside broaching spline parts tooling improvement optimization - 2019 09 - 14 jiang-tao meng ( Luoyang crown gear co. , LTD. ) As mechanical processing industry, often will encounter some steps set, plate parts, especially the processing differential straight tooth taper gear axle shaft gear internal spline, the need to have machining cylindrical and end face as a benchmark, positioning within the broaching spline. Look from the current process equipment, some of the more high-end enterprise, new purchasing in broaching spline equipment, are the higher-end vertical broaching machine, easy to guarantee the precision of the internal spline. But for some old traditional enterprise or a smaller private enterprises, the mostly still adopts the traditional horizontal broaching machine. Horizontal broaching machine parts broaching, often by parts of their own quality and quality under the gravity of broach, makes the broach broaching force and are parts of the centerline don't overlap, lead to the final parts broaching, based on their own internal spline, detection of cylindrical parts end face and the face round beating beating and radial round, a bulk of the larger phenomenon; Therefore developed a kind of can float, broaching spline always make sure broach broaching force with the center line of the parts, improve efficiency and precision of the new horizontal broaching machine tooling, it has the practical and popularization significance. Design of tooling as shown in the appended drawings. Tooling is shown in figure 1, 7. Bolt; 2. Spherical roller bearings; 3. Quick change bushing; 4. Bearing retaining ring; 5. Type O ring; 6. Bearing type plate; 8. Spring the quick change of innovation to improve optimization of the tooling bushing is cylindrical, the inner diameter match for broaching cylindrical parts size ( The reserved unilateral clearance 0. 03 ~ 0. 05mm） , close to the stage in the cylindrical side set have thrust spherical roller bearing, the bearing axial circle diameter and quick change liner cylindrical as transition fit, quick change bushing at the other end of the outside wall with circlip groove, the circlip groove set has spring, spring finally after the circlip groove, quick change bushing should be trace ( 1. 0 to 1. 5毫米) The axial moving. Quick change bushing diameter and bearing type disc diameter for the small gap ( 0. 8 to 1. 0毫米) To cooperate. Thrust spherical roller bearing seat of cylindrical and bearing type plate inside diameter for transgressions surplus to cooperate, bearing disk cavity set within an O la rubber ring, O type rubber ring inside diameter and bearing axial circle diameter as small clearance fit, the bearing axis coil end is fixed on the bearing type plate bearing baffle ring seal, the axial clearance between the reserved 0. 5 ~ 1. 0 mm, bearing type plate fixed in broaching machine on the faceplate. When processing circular stay inside broaching spline workpiece, the workpiece shaft neck set within the quick change bushing, described in the circular steps to stay within the broaching spline workpiece surface and quick change bushing end paste, small cylindrical shaft neck and quick change bushing diameter as small gaps ( Unilateral 0. 03 ~ 0. 05mm） To cooperate. When broach by inner hole broaching parts, under the effect of broaching machine broaching force forward, due to the thrust self-aligning roller bearings under the action of external force can automatically adjust the heart, make the center line of the bearing and pull in the same direction all the time, ensuring that pulled out of the center line of the internal spline with broaching external circular coaxial degree of the parts, at the same time also can ensure that out of the center line of the internal spline with positioning reference face verticality, reach the broaching accuracy of parts. Innovation improved tooling structure, and not for weight and quality of broach broaching parts together the influence of gravity, and is not affected by broaching parts specifications and shape factors such as constraints. When replacement for broaching parts specifications and shapes, just replace with broaching external circular size to match the quick change of bushing. This equipment for processing of straight bevel gear differential enterprises, especially, because straight tooth taper gear axle shaft gear belong to mass production, its structure is the same, many varieties and specifications, used in the actual production, both practical and efficient and stable quality. （ Source: mechanic machine world)