Taper-matched grinding clamp and method for large crosshead assembly
A technology of grinding jig and cross head, which is used in grinding machines, manufacturing tools, seat surface grinding machines, etc., to achieve the effect of taper fit control, stable product quality, and improved production efficiency
Pending Publication Date: 2022-02-01
CHONGQING YUEJIN MACHINERY
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[0052] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.
[0053] See figure 1 ,figure 2 and image 3 The large-scale crosshead assembly of the present invention includes cross head 10 and crosshead 20; the crosshead is a hollow columnar structure, and the central portion is a penetrating tapered hole, and the tapered end 201 is coaxial with the tapered small end 202; crosshead 20 The outer shape is φ450mm × 560mm, with a weight of 221 kg, which belongs to a large component; the crosshead pin 10 is a tapered cylindrical structure, and its large end outer round surface 101 corresponds to the tapered portion of the crosshead 20, and the small end outer circle The surface 102 corresponds to the tapered small end 202 of the crosshead 20; the shape of the crosshead pin 10 is φ249mm × 381mm, the weight is 65 kg, which is also a large component; according to the requirements of the use performance, the cross hea...
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The invention relates to a taper-matched grinding clamp for a large crosshead assembly. The taper-matched grinding clamp is composed of a positioning part and a rotating part, wherein the positioning part comprises a bearing seat placed on a machine tool working platform, a thrust ball bearing matched with the bearing seat, a bearing sleeve arranged outside the thrust ball bearing in a sleeving mode and in interference fit with the thrust ball bearing, and a positioning cover connected to the bearing seat; the positioning cover of the positioning part is correspondingly matched with the inner wall of the lower end of a crosshead pin arranged in and matched with a crosshead taper hole; and the rotating part comprises a transmission cover plate and a Morse taper shank, the lower end of the Morse taper shank is matched and connected with the transmission cover plate, the upper end of the Morse taper shank is matched and connected with a spindle of a machine tool, the lower end of the Morse taper shank is matched with the center of the transmission cover plate, and the transmission cover plate is connected to the upper end of the crosshead pin. The invention further provides a taper-matched grinding method for the large crosshead assembly. The device and the method can perform taper-matched grinding on the large crosshead assembly, so the taper matching degree of the large crosshead assembly is accurately controlled, labor intensity is reduced, and machining efficiency is improved.
Description
Technical field [0001] The present invention relates to oil machinery, and more particularly to a large crosshead assembly taper pairing grinding jig and a grinding method. Background technique [0002] The crush head assembly is a key component in the oil machinery series, especially the large crosshead assembly, and the components have highly precise cooperation requirements and fit requirements. The crosshead assembly that generally has a taper, according to the traditional processing method is the handmade grinding of the fitter, but for components of the size, excessive quality, and the method of hand-mummocating grinding, even difficult to implement, is A bottleneck process that is often encountered in modern machining. At present, the taper of large crosshead assemblies can be found without mature experience, and there is a great difficulty. [0003] CN 201827067U discloses "a lubrication structure for crosshead and cross-head pin for drilling pump", including crossheads, ...
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Login to View More IPC IPC(8): B24B15/08B24B41/06
CPCB24B15/08B24B41/06
Inventor 刘益凡李锡恒郑石兵罗德友陈敬蒋金强
Owner CHONGQING YUEJIN MACHINERY