CN201997969U - Special clamp for machining knuckle - Google Patents

Abstract

The utility model discloses a special clamp for machining a knuckle. The special clamp comprises a locating shaft assembly, a piston assembly, a locating pinboard assembly and a press board assembly that are arranged on a base. The locating shaft assembly is composed of a locating shaft and a locating sleeve, wherein the locating shaft is vertically arranged on the base in an interference way, and a locating part of the locating shaft is matched with a master pin hole of the knuckle. A locating sleeve with the upper surface being matched with the flange surface of knuckle is arranged at the periphery of the locating shaft. The piston assembly is composed of a piston fixing plate and a piston, wherein the piston fixing plate is vertically fixed on the base. The locating pinboard assembly consists of a locating pinboard, a locating nail and a locating pin, wherein the L-type locating pinboard is vertically fixed on the base by the locating pin, and the locating nail is horizontally fixed at the upper end of the locating pinboard in an interference way. The press board assembly is fastened at the shaft end of the locating shaft by a press board and a screw. In the utility model, a special machine tool realizes reliable locating in the milling operation for two holes and two end surfaces of an auxiliary pin of the knuckle and the outer side surface of a short ear, therefore, the special clamp for machining the knuckle has the advantage of completing all processes by one-time clamping.

Description

Processing knuckle special fixture

[technical field]

The utility model relates to a kind of and the matching used special fixture of knuckle special machine bed.

[background technology]

Spindle is a most important safety member in the automobile component, and each car has 2, each one of left-right symmetry.This product design is special, the space structure complexity, and working position is many, location difficulty, mutual alignment precision dimensional requirement is high, and big production lot is big, but that production cost requires is very low.At present, domestic roughly have three kinds of production methods, and the one, adopt machine tool processing, advantage is a small investment, shortcoming is to process the product simple, that precision is low, and equipment is many, operation is many, the workman is many, yield poorly, the quality instability.The 2nd, adopt multi-shaft interlocked machining center, the advantage steady quality, shortcoming yields poorly, invests maximum, quality of workers requirement height, can only be suitable for the knuckle production of many kinds, small lot or use during as new product development.The 3rd, adopt transfer matic, advantage output is big, and the shortcoming investment is big.What at present, domestic general enterprise generally adopted is first method.Utilizing the topmost problem of machine tool processing knuckle is that operation is many, in the whole process of knuckle, have 20 multiple working procedures, the per pass operation all needs the fixedly station of conversion workpiece, just can finish processing tasks such as the milling of all sites, brill, hinge, not only troublesome poeration, the efficient that wastes time and energy are low, and very high to operating personnel's requirement, otherwise can reduce machining accuracy greatly, influence product quality.

At above-mentioned situation, domestic a lot of enterprise all actively seek, exploitation is a kind of cheap, easy to use, the knuckle production equipment special of small investment, but, being subjected to the restriction of relevant anchor clamps, development does not make substantial progress at present as yet, therefore, the exploitation of special fixture has become the bottleneck of special equipment research and development.

[summary of the invention]

For solving the problems referred to above that prior art exists, the utility model aims to provide a kind of processing knuckle special fixture, rely on this anchor clamps, can workpiece be fixed on the special purpose machine tool station very easily, realize No. one time clamping, finish the multiple tracks of the secondary pin of knuckle two hole both ends of the surface, cropped ear lateral surface simultaneously and mill the operation manufacturing procedure, help reducing clamping and location transformation of criterion number of times, and then improve the working (machining) efficiency and the precision of workpiece.

For achieving the above object, the utility model has adopted following technical scheme: this processing knuckle special fixture is characterized in that: comprise base, and be arranged on positioning shaft assembly, piston component, locating pin board component and Anchor plate kit on the base; Described positioning shaft assembly is made of a locating shaft, a positioning sleeve, locating shaft vertically is arranged on the base to interference, the position point of locating shaft and the kingpin bore of knuckle are complementary, the axle head of locating shaft has internal thread, and the positioning sleeve that upper surface and knuckle flange face are complementary is arranged on the locating shaft periphery; Described piston component is made of piston fixed head and piston, and piston is arranged on the piston fixed head, and the piston fixed head vertically is fixed on the base by screw; Described locating pin board component is made up of a location nail-plate, a locating pin and alignment pin, and vertically to being fixed on the base, the locating pin level is to the upper end that is fixed on the location nail-plate by alignment pin for L shaped location nail-plate; Described Anchor plate kit is fastened on the axle head of locating shaft by screw by a briquetting.

During concrete enforcement, described briquetting is opening-like, is that plug-in type is connected with pinching screw.

Beneficial effect: prior art does not still have this type of special fixture.The utility model is according to abnormally-structured feature of knuckle and the needs that mill the secondary pin of knuckle two hole both ends of the surface, cropped ear lateral surface.Two one-movement-freedom-degrees of kingpin bore coupling restriction by locating shaft and knuckle; The upper surface of positioning sleeve and knuckle flange face coupling two rotary freedoms of restriction and an one-movement-freedom-degree; Withstand knuckle screech owl taper hole face by cylinder piston rod, order about knuckle screech owl hole face and be close to rotary freedom of locating pin restriction.Under the acting in conjunction of locating shaft, positioning sleeve, locating pin, piston rod and briquetting, limit the six-freedom degree of knuckle fully, realize reliable location and clamping to knuckle.When the work package of special purpose machine tool, when knuckle was milled operation, knuckle can be in stationary state all the time, had realized clamping No. one time, finished the purpose that job task is milled at above-mentioned position.

Also in conjunction with the accompanying drawings the utility model is further described below by embodiment.

[description of drawings]

Fig. 1 is the assembly structure schematic diagram of an embodiment of the utility model, for ease of understanding the knuckle that has drawn among the figure as processing work.

Fig. 2 is user mode figure embodiment illustrated in fig. 1.

Among the figure: screw 1, pneumatic cylinder fixed head 2, screw 3, pneumatic cylinder 4, piston rod 41, locating pin 5, knuckle screech owl taper hole face 51, knuckle screech owl hole face 52, location nail-plate 6, screw 7, alignment pin 8, pinching screw 9, briquetting 10, knuckle 11, cropped ear lateral surface 111, secondary pin two hole both ends of the surface 112, positioning sleeve 12, upper surface 121, locating shaft 13, position point 131, screw 14, base 15.

[specific embodiment]

Referring to Fig. 1, and in conjunction with Fig. 2.

Base 15 is a rectangular flat, and the anchor clamps (cover has only drawn among the figure) of two cover symmetries are set, and is convenient to the processing of left and right sides knuckle.On base 15, be provided with admit shape and locating shaft 13 and with screw 3, alignment pin 8, screw 7 and screw 14 corresponding holes.In the positioning shaft assembly, locating shaft 13 interference fit are installed on the base 15, and the position point 131 of locating shaft 13 is complementary with the kingpin bore of knuckle 11, limits two one-movement-freedom-degrees.Locating shaft 13 is upwards installed from the bottom of base 15.Positioning sleeve 12 interference fits locating shafts 13 are fixed on the base 15 by soket head cap screw 14, and the upper surface 121 of positioning sleeve 12 is complementary with the flange face of knuckle 11, limits two rotary freedoms and an one-movement-freedom-degree.Piston fixed head 2 in the piston component is a right angle block, is fastened on the base 15 by screw 3.Pneumatic cylinder 4 levels are to being installed on the pneumatic cylinder fixed head 2.In the locating pin board component, location nail-plate 6 vertically is fixed on the base 15 by screw 7, and locating pin 5 interference are fixed on the upper end of location nail-plate 6, and knuckle screech owl hole face 52 is close to rotary freedom of locating pin 5 restrictions.On the horizontal component of location nail-plate 6, alignment pin 8 is set, guarantees the relative position of locating pin 5 and locating shaft 13.The briquetting assembly is fastened on the axle head of locating shaft 13 by screw 9 by a pressing plate 10.

Referring to Fig. 2, and in conjunction with Fig. 1.These anchor clamps have the function (Fig. 1 only draw a sleeve clamp) of fixing left and right two knuckles.During installation, the kingpin bore of knuckle 11 is enclosed within on the position point 131 of locating shaft 13, the upper surface 121 of knuckle flange face applying positioning sleeve 12 withstands knuckle screech owl taper hole face 51 by piston rod 41, makes knuckle screech owl hole face 52 be close to locating pin 5.Then, screw screw 9, utilize briquetting 10 to compress knuckle 11, finish vertically to, level to the location.Anchor clamps are fixed on the special purpose machine tool can mill operation.

Claims (2)

1. a processing knuckle special fixture is characterized in that: comprise base (15), and be arranged on positioning shaft assembly, piston component, locating pin board component and Anchor plate kit on the base (15); Described positioning shaft assembly is made of a locating shaft (13), a positioning sleeve (12), locating shaft (13) vertically is arranged on the base (15) to interference, the position point (131) of locating shaft (13) is complementary with the kingpin bore of knuckle (11), the axle head of locating shaft (13) has internal thread, and upper surface (121) is arranged on locating shaft (13) periphery with the positioning sleeve (12) that the knuckle flange face is complementary; Described piston component is made of piston fixed head (2) and piston (4), and piston (4) is arranged on the piston fixed head (2), and piston fixed head (2) vertically is fixed on the base (15) by screw (3); Described locating pin board component is made up of a location nail-plate (6), a locating pin (5) and alignment pin (8), vertically to being fixed on the base (15), locating pin (5) level is to the upper end that is fixed on location nail-plate (6) by alignment pin (8) for L shaped location nail-plate (6); Described Anchor plate kit is fastened on the axle head of locating shaft (13) by screw (9) by a briquetting (10).

2. processing knuckle special fixture as claimed in claim 1 is characterized in that: described briquetting (10) is opening-like, is that plug-in type is connected with pinching screw.

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