Engine cylinder calipers
Technical field
The present invention relates to a kind of cylinder detection instrument, especially a kind of engine cylinder calipers are used for dividing
Analyse cylinder inter deterioration situation.
Background technology
The measurement of engine air cylinder bore is the conventional project of automotive check, for analyzing cylinder inter deterioration shape
The important skill that condition and auto repair personnel must grasp.This technical ability is not only paid attention to by vast auto repair personnel,
It is the important test item that the examination of car mechanic's job qualification sheet and car mechanic working qualification demonstrate,prove examination.
Currently, the common tool that engine internal diameter measures is mechanical bore gauge.When measurement, first with micrometer caliper
(micrometer) proofreads bore gauge, then chooses the section of upper, middle and lower three of cylinder, is measured respectively using bore gauge substantially mutually
Two vertical diameters (cylinder diameter) finally carry out calculating circularity and cylindricity using formula.
When measuring cylinder diameter using mechanical bore gauge, have the following problems:(1) micrometer caliper is utilized to proofread bore gauge
When, the front and rear ends of bore gauge should be carefully positioned in micrometer caliper by operating personnel, adjust hundred on bore gauge again
Divide table, not only operating difficulties, but also easily causes the bore gauge proofreaded inaccurate.(2) operating personnel shake using arm is front and back
Dynamic bore gauge, when finding the vertical position of table bar, due to the influence of human factor, the determination of vertical position there are certain error,
Engine air cylinder bore is caused to measure inaccurate.(3) when reading dial gauge data, operating personnel will be in conjunction with the rotation of small indicator
Initial position when direction and rotation lattice number, the direction of rotation of big indicator and rotation lattice number and bore gauge school zero starts to calculate
Machine cylinder bore diameter, calculating process is complicated, and easily makes a mistake.(4) due to measurement method complexity, therefore for each of cylinder
Section is only chosen the measured value of two orthogonal diameters to characterize cylinder bore diameter, is accordingly calculated, and measurement data is few,
Precision is low.
Invention content
The purpose of the present invention is overcome complicated for operation, the low problem of precision, and putting forward that measures cylinder in the prior art
Can continuously measure engine air cylinder bore for one kind, measure easy to operate, precision is high, can direct electron read measurement data
Engine cylinder calipers.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of engine cylinder calipers, which is characterized in that the measuring device includes upper body of rod, lower body of rod, first
Stepper motor, the second stepper motor, horizontally-supported shell and cylinder diameter measurement assembly;The upper body of rod includes hollow tubular structure
Upper boom main body, be arranged the upper boom lower body part motor fixing frame, adjusting boss in the upper boom body exterior is set;
Second stepper motor is fixed on the motor fixing frame;It is machined with tooth-shape structure on the peripheral surface of the upper boom main body,
Turbine is formed, the turbine is located above the adjusting boss;The horizontally-supported housing center portion, which has, installs the adjusting
The diameter of the mounting groove of boss, the mounting groove is more than the diameter for adjusting boss;The upper end of the upper boom main body is provided with
Level meter;At least three groups are connected on the horizontally-supported shell to be used for the measuring device being fixed on cylinder
Support component keeps the upper boom main body horizontal by adjusting each support component;The measuring device further includes described for measuring
The sensor module of upper body of rod rotation, the sensor module includes the angular transducer being fixed in the upper boom main body
With the internal gear disc for the downside for being fixed at the horizontally-supported shell;The measurement end of the angular transducer is extend into described
In fluted disc;Worm screw is coaxially connected on the output shaft of first stepper motor, the worm screw engages with the turbine;Under described
The body of rod includes the lower beam main body of hollow tubular structure and the test desk in the lower beam lower body, the test desk and institute is arranged
Lower beam body normal is stated, the upper end of the lower beam main body has an elongated slot, and the lower part of the upper boom main body is set in the lower beam
The top of main body, the endoporus of the upper boom main body is interior to have plush copper corresponding with the elongated slot, and the elongated slot is in the plush copper
It is moved up and down under guiding role, makes the upper body of rod that can move to axial and can not relatively rotate with the lower body of rod;It is described
It is machined with tooth-shape structure on the peripheral surface of lower beam main body, forms rack, it is coaxially connected on the output shaft of second stepper motor
There are gear, the gear to be engaged with the rack;There is the measured hole with the lower beam body normal in the test desk, it is described
The central axis of measured hole intersects with the central axis of the lower beam main body;The cylinder diameter measurement assembly is arranged in the measured hole
In, the cylinder diameter measurement assembly includes:The gauge head module that is contacted with the engine air inside wall of cylinder, by the gauge head module pressing
Spring on the engine air inside wall of cylinder and the displacement sensor being fixedly connected with the gauge head module.
Further, the support component includes first support bar, second support bar and third supporting rod, described second
The upper end of strut has slot hole, and the upper end of the first support bar is bolted with the horizontally-supported shell, and described the
The upper end of two supporting rods passes through the slot hole and the lower end of the first support bar to fix by bolt, and the third supporting rod is
Square, one of described third supporting rod right-angle side and the lower end of the second support bar are bolted.
Further, rubber packing, adjustment branch are additionally provided on the medial surface of two right-angle sides of the third supporting rod
Strut component makes two right-angle sides of third supporting rod distinguish horizontal and vertical, and vertical right-angle side is tightly attached to cylinder
Inner wall on, horizontal right-angle side is pressed on the upper edge of cylinder, and horizontally-supported shell and support component are fixed on hair
On motivation cylinder.
Further, the support component is four groups, and support component circumference uniform distribution described in four groups is fixed on the horizontal branch
It supports on shell.
Further, the measured hole includes the first hole set gradually outward from the centre of the test desk, second
Hole and third hole;The gauge head module includes gauge head and is fixed on the push rod of the gauge head rear end, the push rod have bar portion and
Pole cap, institute's displacement sensors are arranged in first hole, and institute's displacement sensors are fixed with the pole cap, and the bar portion is worn
It crosses second hole and is fixedly connected with the gauge head being arranged in the third hole, the diameter in second hole is less than the third hole
Diameter, the rear end of the gauge head is fixedly connected with spring, and the spring is along the axial direction setting of the measured hole, and the spring is by institute
The front end for stating gauge head is pressed on the inner wall of cylinder.
Further, the cylinder diameter measurement assembly is two groups, is symmetricly set on the both sides of the lower beam main body.
Further, the cylinder diameter measurement assembly is three groups, and cylinder diameter measurement assembly is centered on lower beam main body described in three groups
Circumference uniform distribution.
Further, first stepper motor is fixed on the top of the horizontally-supported shell.
Further, display and integrated circuit package, the display and integrated circuit are further fixed in the upper boom main body
Component includes display unit and integrated circuit unit, and the integrated circuit unit stores the angular transducer and the displacement passes
The measurement data of sensor, calculates the circularity and cylindricity of engine air cylinder bore, and by the measurement data, circularity and cylinder
Degree is sent to display unit and shows.
Further, the connecting wire of the angular transducer is passed through from the endoporus of the upper boom main body and is integrated with described
Circuit unit connects, and the connecting wire of institute's displacement sensors is from top to bottom successively from the measured hole, the endoporus of lower beam main body
It passes through with the endoporus of upper boom main body and is connect with the integrated circuit unit.
Compared with prior art, the present invention apparently has the advantages that:
1, measuring device is fixed on cylinder by the present invention by observing level meter and adjustment support component, and first
Stepper motor drives upper body of rod and lower body of rod to rotate synchronously, and the second stepper motor drives lower body of rod to move up and down, in engine air
Lower body of rod is set to drive cylinder diameter measurement assembly rotation one week on one of cylinder section, simultaneously by integrated circuit acquisition measurement data
It calculates, can continuously measure the multi-group data on a section and multigroup section quickly be measured, high certainty of measurement and automation
Degree is high.
2, since the diameter of mounting groove is more than the diameter of adjusting boss, the cylinder diameter measurement assembly made is in engine air cylinder interior
When rotation, upper body of rod level can move freely in mounting groove, to adjust the center line of upper body of rod, make the center line of upper body of rod
(center line of i.e. entire measuring device) is overlapped with the center line of cylinder, ensures that the data that cylinder diameter measurement assembly measures are
The diameter of cylinder rather than other chord lengths, it is accurate to measure.
3, can be easily and fast to multiple horizontal cross-sections of cylinder, multiangular measurement, and display can be passed through
Unit directly reads measurement result.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is one overall mechanism schematic diagram of embodiment;
Fig. 2 is one upper body of rod structural schematic diagram of embodiment;
Fig. 3 is one horizontally-supported outer casing construction drawing of embodiment;
Fig. 4 is A-A sectional views in Fig. 3;
Fig. 5 is that embodiment one adjusts boss overlook direction schematic diagram when horizontal movement in mounting groove;
Fig. 6 is that embodiment one adjusts boss main view direction schematic diagram when horizontal movement in mounting groove;
Fig. 7 is one sensor module main view connection diagram of embodiment;
Fig. 8 is that one sensor module of embodiment overlooks connection diagram;
Fig. 9 is one cylinder diameter measurement assembly connection diagram of embodiment;
Figure 10 is two horizontally-supported shell structure figure of embodiment;
Three test desk schematic diagram of the positions Figure 11 embodiment.
In figure, 1, upper body of rod, 1-1, upper boom main body, 1-11, plush copper, 1-12, sensor mounting hole, 1-2, motor are fixed
1-3, frame adjusts boss, 1-4, turbine, and 2, lower body of rod, 2-1, lower beam main body, 2-2, test desk, 2-21, measured hole, 2-211,
First hole, 2-212, the second hole, 2-213, third hole, 2-3, rack, the 3, first stepper motor, the 4, second stepper motor, 5, water
Flat support housing, 5-1, mounting groove, 5-2, support component erecting bed, 6, support component, 6-1, first support bar, 6-2, second
Strut, 6-21, slot hole, 6-3, third supporting rod, 6-4, rubber packing, 7, cylinder diameter measurement assembly, 7-1, spring, 7-2, push rod,
7-21, pole cap, 7-22, bar portion, 7-3, displacement sensor, 7-4, gauge head, 8, level meter, 9, sensor module, 9-1, angle pass
Sensor, 9-2, internal gear disc, 10, worm screw, 11, gear, 12, display unit, 13, integrated circuit unit.
Specific implementation mode
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " radial direction ", " axial direction ", "upper", "lower", "top", "bottom",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, do not indicate or imply the indicated device or element must have a particular orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In the description of the present invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The internal diameter of heretofore described cylinder is the inside diameter of cylinder.Heretofore described cylinder
Diameter is the internal diameter of cylinder.
Embodiment one
Engine cylinder calipers as shown in figs. 1 to 9, including upper body of rod 1, lower body of rod 2, the first stepper motor 3,
Second stepper motor 4, horizontally-supported shell 5 and cylinder diameter measurement assembly 7.
In conjunction with Fig. 1, Fig. 2 and Fig. 7, upper body of rod 1 includes the upper boom main body 1-1 of hollow tubular structure, is arranged in upper boom main body
The motor fixing frame 1-2 of the lower parts the 1-1 and adjusting boss 1-3 being arranged outside upper boom main body 1-1, the second stepper motor 4 are fixed
On motor fixing frame 1-2;It adjusts and is machined with tooth-shape structure on the peripheral surface of the upper boom main body 1-1 on the top of boss 1-3, formed
Turbine 1-4;Also there is sensor mounting hole 1-12 on upper boom cylinder.In conjunction with Fig. 1, Fig. 4, Fig. 5 and Fig. 6, in horizontally-supported shell 5
There is center portion the mounting groove 5-1 of installation and adjustment boss 1-3, the diameter of mounting groove 5-1 to be more than the diameter for adjusting boss 1-3;Upper boom
The upper end of main body 1-1 is provided with level meter 8;Have referring to Fig. 3, on horizontally-supported shell 5 circumferentially uniformly distributed around center axis
Four support component erecting bed 5-2, four groups of support components 6 are separately fixed on four support component erecting bed 5-2.
As shown in Figure 1, support component 6 includes first support bar 6-1, second support bar 6-2 and third supporting rod 6-3 and rubber
Glue pads 6-4, and the upper end of second support bar 6-2 has slot hole 6-21, the upper end of first support bar 6-1 and horizontally-supported shell 5
Support component erecting bed 5-2 be bolted, the upper end of second support bar 6-2 passes through slot hole 6-21 and first by bolt
The lower end of supporting rod 6-1 is fixed, and third supporting rod 6-3 is square, one of third supporting rod 6-3 right-angle sides and second
The lower end of supporting rod 6-2 is bolted, and rubber packing 6-4 is pasted onto the inside of third supporting rod two right-angle sides of 6-3.It twists
Loose bolt can make to relatively rotate between each supporting rod, by the way that bolt is fixed to the different locations of slot hole 6-21, can adjust second
The effective length of strut.Keep upper boom main body 1-1 horizontal by adjusting each support component 6, makes two right angles of third supporting rod 6-3
Side difference is horizontal and vertical, and vertical right-angle side is tightly attached on the inner wall of cylinder, and horizontal right-angle side, which is pressed on, to be started
The upper edge of machine cylinder, measuring device is fixed on cylinder.Rubber packing 6-4 avoids third supporting rod 6-3 and hair
Motivation cylinder rigid contact damages cylinder.
In conjunction with Fig. 1, Fig. 7 and Fig. 8 measuring devices further include the sensor module 9 for measuring the rotation of upper body of rod 1, sensor
Component 9 includes the angular transducer 9-1 being fixed on upper boom main body 1-1 and is fixed under horizontally-supported shell 5
The internal gear disc 9-2 of side;Angular transducer 9-1 is in the sensor mounting hole 1-12 of upper boom main body 1-1, angular transducer 9-
1 measurement end is extend into internal gear disc 9-2.
Referring to Fig. 1, worm screw 10 is coaxially connected on the output shaft of the first stepper motor 3, worm screw 10 engages with turbine 1-4;
Lower body of rod 2 includes the lower beam main body 2-1 of hollow tubular structure and the test desk 2-2 in the lower ends lower beam main body 2-1, test desk is arranged
2-2 is vertical with lower beam main body 2-1, and there is an elongated slot (not shown), the lower part of upper boom main body 1-1 to cover for the upper end of lower beam main body 2-1
It is located at the top of lower beam main body 2-1, there is plush copper 1-11 corresponding with elongated slot, plush copper 1-11 to insert in the endoporus of upper boom main body 1-1
Enter in elongated slot, first, playing the guiding role to moving up and down for lower body of rod 2, second is that making to turn without opposite between upper body of rod 1 and lower body of rod 2
It is dynamic, drive upper body of rod 1, lower body of rod 2 to be rotated synchronously with upper body of rod 1.It is machined with tooth form knot on the peripheral surface of lower beam main body 2-1
Structure forms rack 2-3, is coaxially connected with gear 11 on the output shaft of the second stepper motor 4, gear 11 is engaged with rack 2-3.
Referring to Fig. 1 and Fig. 9, there is the measured hole 2-21 vertical with lower beam main body 2-1, measured hole 2-21 in test desk 2-2
Central axis intersect with the central axis of lower beam main body 2-1.
There are the present embodiment two measured hole 2-21, two measured hole 2-21 angles to be 180 ° and (be symmetricly set on lower beam cylinder
Both sides).Cylinder diameter measurement assembly 7 is arranged in measured hole 2-21, and cylinder diameter measurement assembly 7 includes:It is connect with the engine air inside wall of cylinder
Tactile gauge head module is fixedly connected by spring 7-1 of the gauge head module pressing on the engine air inside wall of cylinder and with gauge head module
Displacement sensor 7-3.
In the present embodiment, measured hole 2-21 includes the first hole 2- set gradually outward from the centre of test desk 2-2
211, the second hole 2-212 and third hole 2-213;Gauge head module includes gauge head 7-4 and is fixed on the push rod 7-2 of the rear ends gauge head 7-4,
There is push rod 7-2 bar portion 7-22 and pole cap 7-21, displacement sensor 7-3 to be arranged in the first hole 2-211, displacement sensor 7-3
It is fixed with the pole cap 7-21, bar portion 7-22 is fixed across the second hole 2-212 with the gauge head 7-4 being arranged in the 2-213 of third hole
Connection, the diameter of the second hole 2-212 are less than the diameter of third hole 2-213, and the rear end of gauge head 7-4 is fixedly connected with spring 7-1, spring
7-1 is arranged along the axial direction of measured hole 2-21, and the front end of gauge head 7-4 is pressed on the inner wall of cylinder by spring 7-1.Specifically
The movement of gauge head 7-4 is only passed to displacement sensor 7-3, the position of displacement sensor 7-3 perception gauge heads 7-4 by ground, push rod 7-2
It moves, measures the internal diameter of cylinder.The effect of spring 7-1 is not only in that is pressed on cylinder by the gauge head 7-4 moment
On inner wall, and under the action of spring 7-1, when upper body of rod 1 rotates, since the adjusting boss 1-3 of upper body of rod 1 can be in level
Horizontal sliding, the center line for making upper body of rod 1 are overlapped with the center line of cylinder in the mounting groove 5-1 of support housing 5, are ensured
The value that gauge head 7-4 is surveyed is diameter, rather than other chord lengths, referring to Fig. 5 and Fig. 6.
In the present embodiment, as shown in Figure 1, display and integrated circuit package are further fixed on upper boom main body 1-1, display and collection
Include display unit 12 and integrated circuit unit 13 at circuit unit, integrated circuit unit 13 stores angular transducer 9-1 and position
The measurement data of displacement sensor 7-3, calculates the circularity and cylindricity of engine air cylinder bore, and by measurement data, circularity and
Cylindricity is sent to the display of display unit 12.
In the present embodiment, referring to Fig. 1, the connecting wire of angular transducer 9-1 passes through and collection from the endoporus of upper boom main body 1-1
It is connected at circuit unit 13, the connecting wire of displacement sensor 7-3 is from top to bottom successively from measured hole 2-21, lower beam main body 2-1
Endoporus and upper boom main body 1-1 endoporus pass through connect with integrated circuit unit 13.
The present invention workflow be:
Cylinder diameter measurement assembly 7 is put into cylinder, the bolt in support component 6 is unscrewed, adjusts support group on one side
Each support element of part 6 observes the display of level meter 8 on one side, until level meter 8 shows that upper body of rod 1 (i.e. entire measuring device) is complete
Complete horizontal, each bolt tightened in support component 6 makes measuring device fix.
The initial position of cylinder diameter measurement assembly 7 is to start the first step apart from the cylinder upper surface left and right positions 10mm
Stepper motor 3 is driven by turbine and worm and upper body of rod 1 and lower body of rod 2 is driven to rotate synchronously, to make cylinder diameter measurement assembly 7 complete
The measurement of multiple positions on one section.First stepper motor 3 often makes a move, and angular transducer 9-1 can measure corresponding angle
Degree, while cylinder diameter measurement assembly 7 measures the internal diameter of the corresponding cylinder of this angle.When the first stepper motor 3 drives cylinder
Diameter measurement assembly 7 rotates a circle after (i.e. 360 °), and the measurement in this section terminates.
Start the second stepper motor 4, drives lower body of rod 2 under the guiding role of plush copper 1-11 by 11 rack-driving of gear
Move downward, lower body of rod 2 drive be arranged the cylinder diameter measurement assembly 7 in its lower end synchronize move down into it is another need the section that measures,
Then, starting the first stepper motor 3 makes cylinder diameter measurement assembly 7 rotate, and measures the engine air cylinder bore in this section.
And so on, it is measured until completing entire cylinder.In view of the abrasion actual conditions of cylinder,
Within the scope of the 10mm of cylinder upper surface, and within the scope of the 10mm of cylinder lower face, because of compression ring phase of getting along well
Contact, does not wear, so setting is when measurement inner diameter values become small suddenly, representative is not worn, and measurement process terminates.
Embodiment two
As shown in Figure 10, three groups of support components 6 are arranged in the present embodiment, and three are circumferentially uniformly arranged on horizontally-supported shell 5
6 mounting portion of a support component.
Embodiment three
As shown in figure 11, the present embodiment is equipped with three groups of cylinder diameter measurement assemblies 7, and three groups of cylinder diameter measurement assemblies 7 are with lower beam main body
Centered on circumference uniform distribution.Three groups of measured hole 2-21 are set inside test desk 2-2.
Also there is USB output interfaces in the embodiment of the present invention, the data of measurement are exported and are preserved.
In the embodiment of the present invention, level meter 8 selects universal air-bubble level;First stepper motor 3 and the second stepper motor 4
Select 8HS04 series two-phase (four lines) composite stepper motor;The miniature reset series displacements of displacement sensor 7-3 selection PM pass
Sensor (precision 0.005mm);Angular transducer 9-1 selects electromagnetic type angular transducer;Integrated circuit unit 13 selects ATMEL public
8 AVR single chip ATmega64 of department;Not only it can guarantee precision but also cost can be reduced.
Above-mentioned desirable embodiment according to the present invention is enlightenment, and through the above description, relevant staff is complete
Can various changes and amendments be carried out without departing from the scope of the technological thought of the present invention'.This invention it is technical
Range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.