Patent GB-1113479-A (GB)
Title: Honing device
IPC: B24B33/08
Filed: 1965-07-02
Abstract: 1,113,479. Honing. J. SUNNEN. 2 July, 1965, No. 28245/65. Heading B3D. A honing head for use on a honing machine for honing cylindrical surfaces and the like comprises a rotatable body having two opposed stone assemblies and a main guide assembly circumferentially spaced relative to the stone assemblies mounted thereon, stabilizing guide assemblies mounted on said head, one of said stabilizing guide assemblies for each of said stone assemblies in substantially axial alignment therewith, and means for radially moving at least one of said stone assemblies to change the honing diameter of said head, said last named means being capable of an operative connection with control means in the honing machine. A honing head comprises an elongated body 12 with an endwardly extending integral portion 22 having two opposed spherical surface portions 24 formed thereon. A ring 30 surrounding the portion 22 has holes 32 spaced 90 degrees apart. Screws 34 extend through two opposite holes 32 into threaded bores 26 in the portion 22. The other two opposite holes 32 serve for the mounting of the head on a honing machine. The body 12 is substantially trapezoidal in cross-section having opposite non-parallel surfaces 14, 16 and other opposite substantially parallel surfaces 18, 20. A cylindrical bore 36 extending lengthwise through the body 12 slidably receives an adjustment member 38 having a threaded end 40 meshing with a threaded member 42 which has a forked end 44, 44, provided with bores 50 serving for connection of the member 42 to adjustment means on the honing machine for rotating the member 42. A bearing 48 is located between the member 42 and the body 12. Rotation of the member 38 is prevented by a stud 60 thereon engaging a groove 62 in the body 12. The adjustment member 38 has cutouts forming cam surfaces 52, 54, 56, 58. Adjustable honing assemblies 64, 66 are mounted adjacent the surfaces 14, 16 of the body 12. Each assembly comprises a stone 68 and a backing 70 replaceable on a support 72 having mounting pins 74, 74. The mounting pins on the two assemblies are spaced the same distance apart so that the assemblies are interchangeable but the two pins on each assembly are of different diameters to prevent installation of the assembly upside down. The assembly 64 is radially adjusted by pins 76, 78 having bevelled inner ends co-operating with the cam surfaces 52, 58 on the adjustment member 38. The pins have flats co-operating with the ends of a retained plate 84 attached to the body 12. The assembly 66 is radially adjusted by pins 86, 88 co-operating with the cam surfaces 54, 56 on the adjustment member 38. The pins 76, 78, 86, 88 are located directly under the stones 68 to provide best possible support; the mounting pins 74 are located forwardly of the stones relative to the direction of rotation of the head to prevent binding. Shims 94 having holes 96 to receive the mounting pins 74 may be interposed between the supports 72 and the adjusting pins. The head also has a main guide assembly 100 comprising a relatively soft, long wearing guide shoe 102, e.g. of metal, a support 104 and mounting pins 106, 106 of different size to prevent upside down installation and mounted ahead of the shoe to prevent binding. The guide assembly is radially adjustable by shims. An optional finishing guide assembly comprises a relatively soft, long wearing guide 110, e.g. of metal having mounting pins 112, 112. The guide is loaded radially outwards by a spring (120). The assembly is adjustable by shims. The head also has stabilizing guide assemblies 132, 134, each comprising a relatively soft, long-wearing metal shoe 136 replaceably mounted on a support 138 carried by mounting pins 140, 140. The pins have reduced diameter ends (144) extending through holes in the support 138 and fixed to a plate (146). A spring (148) is located between the support 138 and each of the pins so as to bias the support outwardly and enable the guide to have limited pivotal movement on the pins. Members (150, 152) connected by a threaded member (154) are notched to engage the pins from opposite sides, so that when member (154) is tightened the members (150, 152) clamp on the pins to control the radial position of the guide assembly; when member (154) is loosened adjustment can be effected. The outer member (150) has inclined surfaces forming an edge (156) co-operating with the forked end of a spring (158) secured to the body 12. The stabilizing guides 132, 134 are axially aligned with the stone assemblies 64, 66, have rounded or bevelled lower ends (136a) and are adjusted to extend radially outwardly on the body the same distance or slightly further than the stone assemblies at the beginning of honing so that the guides 132, 134 engage the work surface with sufficient force to orient and stabilize the head.