CN2101215U

CN2101215U - Symmetry precision measuring instrument for machine-tool working parks

Info

Publication number: CN2101215U
Application number: CN 91214402
Authority: CN
Inventors: 吴艾平
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-15
Filing date: 1991-04-15
Publication date: 1992-04-08

Abstract

The utility model discloses a symmetry precision measuring instrument for machine-tool working parts, comprising a measuring main body, a display machine, and a measuring head device. The utility model is mainly used for directly measuring the symmetry of processing parts, such as cutting keyways, cutting splines, gear forms and gears on a machine tool in the working process of a milling machine, a hobbing machine tool, a gear grinding machine and a spline grinding machine. The utility model is favorable for improving symmetry measuring accuracy of processing parts and increasing product quality and measuring efficiency. The utility model has the advantages of simple operation and reliable and convenient use.

Description

Symmetry precision measuring instrument for machine-tool working parks

The utility model machined part symmetry precision measurer relates to machining measurement mechanism technical field, is applicable in mechanical processing process directly on lathe, to the measurement of various processing parts (profile of tooth or spline shape) symmetry precision.

At present in mechanical component processing, measurement to processing parts symmetry precision still is a difficult problem, only in some machined part to the measurement of symmetry precision, it is to use flat board for the employing that has " signing method ", measure dial framework, vee-block, outside micrometers etc. are formed aid, processing parts such as keyway symmetry precision are measured, its weak point is because dull and stereotyped, vee-block, the error of locating piece self, and the cumulative errors between them, cause measuring accuracy to reduce, during operating cost, and must unload part down from lathe when measuring and carry out, if it is defective, can only do to scrap processing, can not reprocess, reach the problem of further adjustment processing parts symmetry precision.In addition, also employing lever meter that in machining, has and table bar, tablet, be placed on the worktable processing parts is directly measured, use the measurement mechanism that this auxiliary implement is formed, though can be in mechanical processing process, adjust the symmetry precision of processing parts, improve the qualification rate of product, but because the error of work top, flat board self, and in measuring process, need mobile dial framework to cause error, cause the tested part precision to reduce, during operating cost, influence part processing production efficiency.

For the measurement of splined shaft, what have also is to adopt " signing method " in machined part, and it is by the beat instrument, clock gauge and dial framework, and dull and stereotyped and isometry block composition subsidiary utensil, there are the problems referred to above aborning too in this measuring appliance.Now to sum up this some supplemental measurement tools of using carry out the measurement of indirect to part symmetry precision, and its shortcoming is: the aid of 1, using is many more, and the measuring error of part symmetry accuracy class is just big more.Tested part must be unloaded down from lathe when 2, measuring,, can only be done to scrap processing, can not further control the symmetry precision of adjusting part processing, cause the part qualification rate low if defective.3, during operating cost, production efficiency is low.

The purpose of this utility model provides a kind of machined part symmetry precision measurer, and by measuring main body, indication mechanism and measuring head device constitute.This measuring instrument can be directly on lathe the symmetry precision to processing parts test, reach control part symmetry machining precision, improve product percent of pass, improve the symmetry measuring accuracy, improve the purpose of machined part symmetry measuring accuracy instrument.

The design of the utility model machined part symmetry precision measurer is to realize (Fig. 1) like this, promptly be to utilize gauge head to be fitted on the tested part surface of workpiece, driving the meter bar with main body is that dial gauge is on the part circumference, perhaps on cylindrical measurement rod, reciprocatingly slide, diverse location when sliding reflects the reading value of measured piece intuitively on dial gauge.Its measurement range can be changed different gauge heads and reach the requirement of measuring the symmetry precision according to the different size of measured piece.The primary structure of the utility model machined part symmetry precision measurer is by measuring main body, indication mechanism, measuring head device composition.

Main body (1) is used for connecting dial gauge bar and measuring head, and two dial gauge bar sliding trays (3) are arranged on the main body, and dial gauge bar (2) is installed on groove, and table bar (2) can be made left and right sides parallel sliding along sliding tray on main body.Connecting dial gauge ， And by the dial gauge bar is simultaneously fastened the table lever lock on main body by dial gauge set nut (4).The latter half diameter of dial gauge bar is bigger than the first half, and there is the umbo that varies in size the junction, and dial gauge or clock gauge (12) directly are fixed on the latter half of dial gauge bar by dial gauge set nut (11).By Fig. 5, can fit with main body well in order to make gauge head connector (8), prevent that the gauge head connector from moving outward, with link stopper lock-screw (5) gauge head connector link stopper (7) is locked, to produce in order preventing to measure simultaneously and looseningly to cause error, also adopted gauge head connector lock-screw (6) to be locked.The other end of gauge head connector connects gauge head (10) by pin (9), gauge head directly and measured piece fit and survey the symmetry precision.Further specify below and measure main body and show that mechanical structures is:

Dial gauge bushing (13) encapsulation is gone up the And main body sliding tray lining (15) of packing at cylindrical bolt with holes (14), and then in the sliding tray of packing into (3), the dial gauge bar passes bolt hole (14), packing ring (16) is enclosed within bolt Shang ， And and screws in set nut.When dextrorotation turn nut (4), then dial gauge bar and main body (1) are fixed together by the effect of bolt, loosening set nut, dial gauge bar can be along the main body sliding tray left and right sides parallel moving, show bar simultaneously and can also move up and down and carry out angular turn.By Fig. 3, dial gauge clamping screw (18) is fixed on the dial gauge bar (2) with rivet welding, dial gauge folder ear (17) carries out injection mo(u)lding with rubber or plastics, and there is the in-line mouth centre, and the latter half is half-cylindrical And and has the hole, rubber-like effect ， And presss from both sides ear with dial gauge successively, and packing ring (16) is enclosed within on the bolt (18), then set nut (11) put ， And by thread set on bolt (18).(Fig. 4) passes the folder earhole with the dial gauge bar during use, and the set nut that turns clockwise (11), dial gauge bar are fixed tightly, and loosening set nut, dial gauge bar can move forward and backward and carry out angular turn.

The utility model machined part symmetry precision measurer is all assembled with steel processing and fabricating ， And on lathe and is constituted the symmetry measuring instrument.

The effect of the utility model machined part symmetry measuring instrument is: this instrument is mainly used in milling machine processing, the gear hobbing machine tooling, gear grinder processing, in the spline grinding machine process to processing parts, symmetry precision as milling key groove, milling spline and profile of tooth (wheel) is directly measured on lathe, can further improve the trueness error problem that this operation part processing precision and last operation carry over.This surveying instrument is compared with existing indirect survey instrument, has reduced self sum of errors cumulative errors of aid, has improved the symmetry measuring accuracy.In mechanical component processing, using this surveying instrument to measure symmetry does not require machined part unloaded down from lathe and carries out, if measuring accuracy is defective, can also on lathe, further revise and adjust symmetry, help improving product percent of pass and measuring operation work efficiency.Has practical, simple to operate, easy to use and reliable advantage, perfect machined part symmetry precision measure utensil.

Fig. 1 is the symmetry precision measurer structural drawing of machined part.

Fig. 2 is a B-B direction cut-open view among Fig. 1.Fig. 3 is a C-C direction cut-open view among Fig. 1.

Fig. 4 is a D-D direction cut-open view among Fig. 1.Fig. 5 is an A-A direction cut-open view among Fig. 1.

Symmetry survey sheet when Fig. 6,7 is milling male splines, milling key groove.

Fig. 8 is a profile of tooth symmetry survey sheet.

The embodiment of the symmetry measuring instrument of the utility model machined part is: measure main body (1) and adopt No. 45 modified material of steel processing and fabricating growth on lathe to be 300mm, thickness is 25mm, width is the rectangular parallelepiped of 50mm, meter bar sliding tray is from both ends of the surface 25mm, and from 30mm, sliding tray is respectively long 110mm between two grooves, wide 15mm, manufacturing accuracy is ± 0.02mm that surfaceness is that 1.6 ， And carry out the processing of integral surface chrome-plated process.Gauge head adopts and to roll chromium steel or wimet to make diameter after bakingout process be φ 4-10mm, long is 5-10mm, precision is ± product of 0.01mm, the pin (9) that gauge head is connected with the gauge head body adopts standard cylindrical to sell son directly to households, be that diameter is 2～7mm, length is 5～15mm, uses high-strength adhesive, pin is installed in the centre of gauge head connector and gauge head, their bonding connections are got up.Gauge head connector (8) and link stopper (7) are all used No. 45 steel processing and fabricating on lathe, the gradient part of gauge head connector is that major part is 30mm, the microcephaly is processed with gauge head connector set nut hole (20) and link stopper screw (21) for 10-3mm ， And, and all adopts the chrome-faced PROCESS FOR TREATMENT.Link stopper lock-screw (5), gauge head connect lock-screw (6) and all adopt commercially available standard component.Dial gauge bar (2) in the indication mechanism, dial gauge stem jam nut (4), dial gauge set nut (11), dial gauge or clock gauge (12), the cylindrical bolt (14) that dial gauge bushing (13) is with holes, packing ring (16), dial gauge folder ear (17), dial gauge clamping screw (18), the flat tongue of dial gauge bar (19) etc. is the commercially available part of purchasing.Main body sliding tray lining (15) is processed into the long 20mm that is with No. 45 steel on lathe, external diameter is 15mm, and internal diameter is that the cover ， And of 10mm heat-treats and makes.

Now use this measuring instrument in process, profile of tooth symmetry precision directly to be measured, as Fig. 8 utilization to the skill in using a kitchen knife in cookery, with first teeth groove, switch to certain depth, cutter withdraws from workpiece, gauge head is fitted on first flank, dial gauge is pressed in the corresponding 90 degree positions of teeth groove, and mobile agent drives dial gauge along the peak reading value on the tooth base, then with the whole Rotate 180 degree of instrument, gauge head is fitted on the opposite side flank of tooth again, repeat above-mentioned method of operating,, illustrate that then profile of tooth is asymmetric if the reading value of twice measurement is different, should adjust the position of tooth base and cutter, obtain the qualified product of symmetry precision at last.

Same this measuring instrument of using is on milling machine during the milling male splines (Fig. 6), can directly milling cutter be aimed at scribing position mills first And and stays certain surplus, cutter withdraws from workpiece and mills two side faces And again and stay certain surplus, with this measuring instrument the workpiece symmetry is directly measured, if defective, in time adjust the workpiece symmetry, obtain qualified part product at last.

On milling machine, during milling key groove (Fig. 7), can in process, directly measure ， And equally and can improve symmetry measuring accuracy grade in addition the symmetry of keyway.

Claims

1, a kind of machined part symmetry precision measurer, dial gauge bar (2) by indication mechanism, table bushing (13), table stem jam nut (4), dial gauge or clock gauge (12) and set nut (11), bolt (14,18), packing ring (16), folder ear (17) is formed, and it is characterized in that measuring has two meter bar sliding trays (3) on the main body (1), and dial gauge bar (2) is installed in one of them groove, gauge head connector (8) is locked link stopper (7) with screw (5) with measuring main body applying And, and the locking of the another side of gauge head connector, an end of gauge head connector (8) is by pin (9) bonding connection gauge head with screw (6).