CN2360210Y

CN2360210Y - Drilling-cutting ergograph for normal lathe

Info

Publication number: CN2360210Y
Application number: CN 98225446
Authority: CN
Inventors: 沈华良
Original assignee: JIAXING CITY SECONDARY SPECIALIZED SCHOOL
Current assignee: JIAXING CITY SECONDARY SPECIALIZED SCHOOL
Priority date: 1998-10-23
Filing date: 1998-10-23
Publication date: 2000-01-26
Anticipated expiration: 2008-10-23

Abstract

The utility model discloses a drilling-cutting force-measuring instrument for a normal lathe, comprising a twist drill clamp device, an elastic element, a Morse outer cone and a protective cover. The elastic element is a thin-wall cylinder, the twist drill clamp device and the Morse outer cone are respectively connected to the two ends of the thin-wall cylinder, the protective cover is an outer sleeve which encloses outside the thin-wall cylinder, and the protective cover is connected to the Morse outer cone; the outer cylindrical surface of the thin-wall cylinder is pasted with eight strain sheets, and the eight strain sheets are led out by leading wires. Therefore, a radial drilling machine does not need to be added, and the drilling-cutting force measuring experiments can be conducted on the normal lathe, which is both economical and convenient. The utility model is especially suitable for the teaching experiments of the mechanical major.

Description

The engine lathe drilling dynamometer

The utility model relates to a kind of drilling dynamometer, especially is applied to the drilling dynamometer of machine-building professional teaching experiment usefulness.

The drill thrust measurement be machine-building specialty " theory of metal cutting and cutter " course teaching outline regulation must do one of experiment.The drilling dynamometric system is made up of dynamometer, dynamic strain indicator, recorder and electric bridge box etc., and the signal of telecommunication input dynamic strain indicator of dynamometer output can directly be shown by the recorder record after amplifying.But the drilling dynamometer of mechanical major syllabus and the introduction of experiment instruction book all must carry out on radial drilling machine at present, but for most of schools, to remove to increase a radial drilling machine be uneconomic in order to offer this experiment, and also be not applicable to the drilling dynamometer that engine lathe is used now.

The purpose of this utility model is to provide a kind of can be used in axial force F when measuring the fluted drill machining on the engine lathe and the engine lathe drilling dynamometer of moment of torsion M.

For achieving the above object, engine lathe of the present utility model comprises fluted drill fixture, flexible member, Mohs outer cone and protective cover with drilling dynamometer, described flexible member is a thin wall cylinder, fried dough twist cobalt fixture and Mohs outer cone are connected to the two ends of this thin wall cylinder, described protective cover is one to be enclosed in the outer sleeve of described thin wall cylinder outside, and it is connected on the Mohs outer cone; On the cylinder of the outer garden of described thin wall cylinder, be pasted with eight foil gauges, and be distributed in proper order on its circumference by R5, R1, R6.R2, R7, R3, R8, R4, wherein R5, R7 are parallel with axis, R6, R8 and axis normal, 45 ° of R1, R3 and axis right avertence, 45 ° of R2, R4 and axis left avertences, described eight foil gauges are all drawn with lead.

Owing to adopted technique scheme, fluted drill fixture and Mohs outer cone have been increased in the drilling dynamometer of the present utility model, during experiment the Mohs male cone (strobilus masculinus) is installed in the taper hole of engine lathe barrel of tail stock, fluted drill is clamped with the fluted drill fixture of drilling dynamometer.Like this, utilize the longitudinal maneuver feeding of the vertical slide carriage of engine lathe to drive tailstock and makes fluted drill make axial feed, thereby do not need to add in addition radial drilling machine, just can directly on engine lathe, carry out the drill thrust experiments of measuring, not only economy but also make things convenient for.

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the fluted drill fixture among Fig. 1 is the structural representation of Mohs inner cone;

Fig. 3 is the foil gauge distribution map when thin arm tube launches in the utility model;

Fig. 4 is a bridge circuit wiring diagram of the present utility model;

Fig. 5 adopts drilling dynamometric system schematic diagram of the present utility model.

As shown in the figure, engine lathe of the present utility model comprises fluted drill fixture 1, flexible member 2, Mohs outer cone 3 and protective cover 4 with drilling dynamometer, flexible member 2 is a thin wall cylinder, fluted drill fixture 1 and Mohs outer cone 3 are connected to the two ends of this thin wall cylinder, protective cover 4 is one to be enclosed in the outer sleeve of thin wall cylinder outside, and it is connected on the Mohs outer cone 3; On the external cylindrical surface of thin wall cylinder, be pasted with eight foil gauges 5, and be distributed in proper order on its circumference by R5, R1, R6, R2, R7, R3, R8, R4, wherein R5, R7 are parallel with axis, R6, R8 and axis normal, 45 ° of R1, R3 and axis right avertence, 45 ° of R2, R4 and axis left avertences.For straight shank twist drill, can come clamping with the fluted drill fixture 1 that drill chuck connects into by the short awl of Mohs outward, and for the fried dough twist cobalt of being with taper shank, then available Mohs inner cone comes the clamping fluted drill as fixture 1, as shown in Figure 2.As shown in Figure 4, the vertical slide carriage 8 of engine lathe is rigidly connected with tailstock 9 during experiment, be installed on drilling dynamometer 7 of the present utility model in the sleeve taper hole of tailstock 9 by its Mohs outer cone 3, fluted drill fixture 1 is clamped fluted drill, and eight foil gauges 5 pick out respectively and are connected with moment of torsion M electric bridge box 11 with axial force F electric bridge box 10 by drawing lead 6.Adjust lathe spindle axis and tailstock 9 sleeve taper hole axis coaxles, and test specimen is installed on the scroll chuck.The signal of telecommunication input dynamic strain indicator 12 of dynamometer 7 outputs during dynamometry can directly be shown by recorder 13 records after amplifying.

Utilize this engine lathe drill thrust measuring instrument, axial force F in the time of can measuring the fluted drill machining and moment of torsion M, research bit diameter, feed change the rule that influences to F, M, and set up the computing formula of F, M according to experimental data, also can study common fluted drill main cutting edge simultaneously, chisel edge produces axial force F and the shared ratio of moment of torsion M.So widely applicable, economical convenient, can be suitable for teaching and scientific research simultaneously and use.

Claims

1, engine lathe drilling dynamometer, comprise foil gauge, flexible member and protective cover etc., foil gauge has lead to draw, it is characterized in that, it also comprises fluted drill fixture and Mohs outer cone, and described flexible member is a thin wall cylinder, and described fluted drill fixture and Mohs outer cone are connected to the two ends of this thin wall cylinder, described protective cover is one to be enclosed in the outer sleeve of described thin wall cylinder outside, and it is connected on the described Mohs outer cone; On the cylinder of the outer garden of described thin wall cylinder, be pasted with eight foil gauges, and be distributed in proper order on its circumference by R5, R1, R6, R2, R7, R3, R8, R4, wherein R5, R7 are parallel with axis, R6, R8 and axis normal, 45 ° of R1, R3 and axis right avertence, 45 ° of R2, R4 and axis left avertences.

2, engine lathe drilling dynamometer as claimed in claim 1 is characterized in that, described fluted drill fixture is formed by connecting with drill chuck by the short outward awl of Mohs.

3, engine lathe drilling dynamometer as claimed in claim 1 is characterized in that, described fluted drill fixture is a Mohs inner cone.