CN110530619A - Drill bit test platform and test method - Google Patents
Drill bit test platform and test method Download PDFInfo
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- CN110530619A CN110530619A CN201910720960.8A CN201910720960A CN110530619A CN 110530619 A CN110530619 A CN 110530619A CN 201910720960 A CN201910720960 A CN 201910720960A CN 110530619 A CN110530619 A CN 110530619A
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 59
- 238000005553 drilling Methods 0.000 claims description 31
- 238000013016 damping Methods 0.000 claims description 19
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
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- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Earth Drilling (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of drill bit test platform and test methods, it includes mounting framework, load carrier and borehole drill construction, and load carrier and borehole drill construction are installed on mounting framework, is integrally formed test platform；The cylinder of borehole drill construction imposes on subject drill bit with constant pressure, and measurement pierces the time used in certain depth hole and certain amount hole as control, accurately reflects drill bit sharpness and wearability；The configuration of the present invention is simple, stable operation, technic index is controllable, suitable for different thicknesses, the test of different length drill bit, has good versatility.
Description
Technical field
The present invention relates to drill bit test method and testboards, and in particular to the test of drill bit sharpness and wearability (service life)
Method and testing bench structure.
Background technique
It is well known that the sharpness of drill bit determines the speed and efficiency of drilling, with the increasing of drilling depth or drilling hole amount
Add, drill edge can gradually be worn, be passivated, and sharpness decaying, when sharpness reduces to a certain extent, drill bit fails, the longevity
Life termination.In addition, the wearability of drill bit determines the speed of its sharpness decaying, the service life of drill bit is also just determined.
The sharpness and wearability (service life) of drill bit depend on drill bit material and manufacturing process, are measure bit performance two
Item important indicator, is the quality index that manufacturer, user and quality supervised department are paid close attention to.However there is presently no a set of
Accurate and current test method and automatic test device.Traditional test method is manually boring test, due to tested
As a result the limitation of strip part and tester are inaccurate, and program is cumbersome, time-consuming, laborious only with subjective judgement is felt.
Summary of the invention
It is an object of the invention to: a kind of drill bit automatically testing platform and test method are provided, tested automatically by platform
The sharpness and wearability (service life) of spiral bit or drill hammer realize drill bit test automation, have good versatility.
The technical solution of the invention is as follows:
The drill bit test platform includes mounting framework, load carrier and borehole drill construction, installed on mounting framework load carrier and
Borehole drill construction is integrally formed test platform；The mounting framework is made of the bottom plate of siding and perpendicular connection；Described
Load carrier includes cross slid platform, X-axis stepper motor, X-axis screw rod, and cross slid platform is respectively containing X-axis, the guide rail of Y direction and support
Plate, X-axis stepper motor couple the X-axis supporting plate of cross slid platform by X-axis screw rod, and y-axis stepper motor couples cross by Y-axis screw rod
The Y-axis supporting plate of slide unit places standard specimen on cross slid platform, changes the drilling position of standard specimen by mobile cross slid platform
It sets；The borehole drill construction includes band damping cylinder, connecting rod, linear guide, electric drill, vernier, pressure regulator valve, upper probe and test
Head, fixing belt damping cylinder on siding, piston rod is downward, and the piston with damping cylinder stretches out that port, that piston retracts port is logical
Cross the pressure regulator valve of two-position-five-way solenoid valve connection gas source, fixed straight line guide rail on the same axis in the lower section with damping cylinder, band resistance
The piston rod of Buddhist nun's cylinder is connect by connecting rod with the sliding block in linear guide, and electric drill is fixed on sliding block, is clamped on electric drill by test drilling
Head, vernier is installed on connecting rod, and connecting rod, vernier, sliding block, electric drill and subject drill bit move down in linear guide with piston rod
Dynamic, installing two inductance approach switchs adjustable in pitch as position sensor in the parallel upper and lower position in the side of connecting rod is
Upper probe and lower probe.
Further, probe bracket is installed in the side parallel position of siding upper connecting rod, probe bracket is in angle bar shape；One
Face is fixed on siding by two bolts and can unclamp the two bolts and move up and down position there are two strip hole；It is another straight
On edged surface, top is circular hole, and lower section is strip hole, is respectively intended to install probe and lower probe, the position of upper probe are fixed, under
The position of probe adjusts up and down along probe bracket.
Further, controller, controller and electric drill, two-position-five-way solenoid valve, pressure regulator valve, X-axis are installed on siding
Stepper motor, y-axis stepper motor, upper probe and lower probe connect and compose electrical circuit according to circuit mode.
The test method of above-mentioned drill bit test platform is with constant electric drill revolving speed, constant drill pressure, certain brill
Hole depth and standard specimen are continuously bored N number of hole with subject drill bit, measure the time used in each hole；I.e. in above-mentioned constant item
Under part, enables subject drill bit successively bore N number of hole, record time t used in each hole1——tN, then it is averaged, t=(t1+ t2
+ ...+tN)/N, the length of t just reflects the sharpness of drill bit when boring in this way, and certain time is shorter, and drill bit is sharper；It bores
The time t in the hole NNWith the time t in the 1st hole1Difference DELTA t=tN- t1Reflect the wearability (service life) of drill bit, it is clear that Δ
T is smaller, and the sharpness decaying of drill bit is slower, and wearability is better, and the service life is longer；Same specification, unlike material, different manufacturing process
(screw pitch, cutting edge profile including drill bit, heat treatment) is tested drill bit by comparing t and Δ t, that is, distinguishable the two of the two
The superiority and inferiority of sharpness and wearability (service life), t value is smaller sharper, and Δ t value is smaller more wear-resisting (service life is longer).
The detailed process of the test method of above-mentioned drill bit test platform is: using cylinder as power source, being imposed on constant pressure
It is tested drill bit and standard specimen, measurement pierces the time used in each hole in N number of hole of certain depth as control, judges drill bit sharpness
And wearability, including sharpness test and wearability namely life test；Wherein, sharpness is tested: installation is by test drilling on electric drill
Head places standard specimen on cross slid platform, drives electric drill to move up and down along linear guide with band damping cylinder, is tested drill bit to mark
Quasi- test specimen imposes certain pressure, and subject drill bit drills on standard specimen；Subject drill bit pierce the hole depth of standard specimen by
Upper probe and the control of lower probe after a upper hole is drilled, mentions brill, test specimen displacement, then bore next hole, repeat n times, every
Secondary drilling time is recorded, and by calculating average time, to judge the sharpness of drill bit, the shorter the time the sharper；
Wherein, wearability namely life test: by comparing the difference of boring time the 1st boring time and n-th
Value, to judge the wearability (service life) of drill bit, it is clear that the difference of time is smaller, and the wearability of drill bit is better (service life is longer).
The principle of the present invention is: using cylinder as the power for drilling and mentioning brill, power of the electric drill as bit；Drilling
When, air pressure pushes piston rod, connecting rod, electric drill and subject drill bit to move down, and vernier, which is just aligned, when bit contact standard specimen visits
Head, upper probe output start timing；When being drilled into set depth, vernier is aligned with lower probe, lower probe output
Stop timing, timing time is drilling time；After a upper hole is drilled, brill, test specimen displacement is mentioned, then bore next hole, repeated
Carry out n times, each drilling time recorded, the control of entire test process, timing, record by controller telemetry circuit
It realizes；By testing and calculating drilling average time used, to judge the sharpness of drill bit, the shorter the time the sharper；Pass through
Compare the difference of boring time the 1st boring time and n-th, to judge the wearability (service life) of drill bit, it is clear that
The difference of time is smaller, and the wearability of drill bit is better (service life is longer).
Further, the drill bit of different thicknesses, bleed pressure when test, the i.e. piston rod of cylinder impose on the pressure of drill bit
Power, drilling depth are different, and are set according to test specification.
Further, for the test of certain drill bit, bleed pressure is constant, and each drilling depth is certain, and electric drill is by steady
Voltage source power supply stabilization of speed, the sharpness of drill bit are reflected by the temporally precise used that drills completely, the wearability of drill bit
The difference of (service life) also time as used in the 1st hole and the hole N accurately reflects.
The invention has the following advantages that
1, this test method is that drill produced producer selects suitable drill bit material, improvement production technology, raising product quality to mention
The means of testing for having supplied accurate science, also provides scientific basis to the test of drill bit for technical supervision department.
2, the pressure for imposing on drill bit in drill bit test process is constant, drilling depth is certain, electric drill stabilization of speed, ensure that each
The operating condition in hole is consistent, and the time used that drills accurately reflects the sharpness and wearability (service life) of drill bit.
3, the movement of electric drill, cylinder, cross slid platform, the measurement of drilling time, record, is all realized by telemetry circuit, is realized
Drill bit test automation.
4, change bleed pressure to change the pressure that cylinder imposes on drill bit, change the spacing between two probes and beaten to change
Hole depth, therefore this test platform is suitable for the test of different thicknesses, different length, different type drill bit, has good logical
The property used.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the curve that the present invention is tested drill bit test with Mr. Yu, and wherein curve 1 is that each hole time change in the 1st hole to the hole N is bent
Line, curve 2 are the 1st hole to N hole drilling speed change curves.
In figure: 1 band damping cylinder, 2 piston rods, 3 pistons stretch out port, and 4 pistons retract port, 5 connecting rods, and 6 straight lines are led
Rail, 7 sliding blocks, 8 electric drills, 9 subject drill bits, 10 verniers, 11 two-position-five-way solenoid valves, 12 pressure regulator valves, 21 cross slid platforms, 22 X-axis
Stepper motor, 23 X-axis screw rods, 24 standard specimens, 31 probe brackets are popped one's head on 32,33 lower probes, 41 sidings, 42 bottom plates.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing, but is not to be construed as the limit to technical solution
System.
As shown in Figure 1, the drill bit test platform includes mounting framework, load carrier and borehole drill construction, on mounting framework
Load carrier and borehole drill construction are installed, test platform is integrally formed；The mounting framework is by siding 41 and perpendicular connection
Bottom plate 42 form；The load carrier includes cross slid platform 21, X-axis stepper motor 22, X-axis screw rod 23, is filled on bottom plate 42
There is a cross slid platform 21, cross slid platform 21 guide rail and supporting plate containing X-axis, Y direction respectively, X-axis stepper motor 22(model
86BYG250D) pass through X-axis screw rod 23(specification M12 × 4) the X-axis supporting plate of connection cross slid platform 21, the X-axis of cross slid platform 21 drags
Plate is dragged the movement for doing X-direction by X-axis stepper motor 22 by X-axis screw rod 23, and y-axis stepper motor is coupled by Y-axis screw rod
The Y-axis supporting plate of cross slid platform 21, Y-axis planker are also done movement (the Y-axis side in Fig. 1 of Y direction by stepper motor by screw rod dragging
To stepper motor and screw rod be not drawn into, model and specification are identical as X-axis), standard specimen 24 is placed on cross slid platform 21, is led to
It crosses and moves that cross slid platform 21 make X, the movement of Y direction changes the bore position of standard specimen 24, test spiral bit carbon
Steel makees test specimen, tests drill hammer with concrete and makees test specimen；The borehole drill construction includes band damping cylinder 1, connecting rod 5, straight line
Guide rail 6, electric drill 8, vernier 10, pressure regulator valve 12, upper pop one's head in 32 and lower probe 33, fixing belt damping cylinder 1(model on siding 41
SC50 × 250), downwards, band damping cylinder 1 passes through two-position-five-way solenoid valve 11(model 4V210-08A to piston rod 2) connection gas
The pressure regulator valve 12 in source, fixed straight line guide rail 6(model HGR30 × 300 on the same axis in the lower section with damping cylinder 1), band damping
The piston rod 2 of cylinder 1 is connect by connecting rod 5 with the sliding block 7(model HGH30CA in linear guide 6), fixes electric drill on sliding block 7
8, subject drill bit 9 is clamped on electric drill 8, vernier 10 is installed on connecting rod 5, in the side of connecting rod 5 parallel upper and lower position clipping room away from
(inductance type NPN type is used as position sensor close to switch, model LJ12A3-4-Z/BX) to adjustable two inductance approach switchs
I.e. upper probe 32 and lower probe 33；Piston with damping cylinder 1 stretches out port 3 and piston retract port 4 respectively by conduit with
Two-position-five-way solenoid valve 11(model 4V210-08A) A, B port connection, two-position-five-way solenoid valve 11 connect gas source pressure regulator valve
12；When the coil of two-position-five-way solenoid valve 11 is powered, A mouthfuls are emptied with gas source P mouthfuls of connection, B mouthfuls with S mouthfuls of connections, and piston rod 2 exists
Connecting rod 5, vernier 10, electric drill 8 and subject drill bit 9 is driven to move down drilling under air pressure；Conversely, working as the coil of two-position-five-way solenoid valve 11
When power-off, B mouthfuls are emptied with gas source P mouthfuls of connection, A mouthfuls with R mouthfuls of connections, and piston rod 2 drives connecting rod 5, vernier 10, electric drill under pneumatic pressure
8 and subject drill bit 9 move up and mention brill.
Further, probe bracket 31 is installed in the side parallel position of 41 upper connecting rod 5 of siding, probe bracket 31 is in angle
Iron shape；On one side there are two strip hole, it is fixed on siding 41 by two bolts and the two bolts can be unclamped and move up and down position
It sets；In another right-angle surface, top is circular hole, and lower section is strip hole, is respectively intended to install probe 32 and lower probe 33, upper probe
32 position is fixed, and the position of lower probe 33 is adjusted along about 31 probe bracket.
Further, controller, controller and electric drill 8, two-position-five-way solenoid valve 11, pressure regulator valve are installed on siding 41
12, X-axis stepper motor 22, y-axis stepper motor, upper probe 32 and lower probe 33 connect and compose electrical circuit according to circuit mode.
The test method of above-mentioned drill bit test platform includes sharpness test and wearability namely life test；Wherein, cutting edge of a knife or a sword
Sharp degree test: installation is tested drill bit 9 on electric drill 8, places standard specimen 24 on cross slid platform 21, drives electricity with band damping cylinder 1
It bores 8 to move up and down along linear guide 6, subject drill bit 9 imposes standard specimen 24 certain pressure, and subject drill bit 9 is tried in standard
It drills on part 24；Subject drill bit 9 pierces the hole depth of standard specimen 24 by 33 control of upper probe 32 and lower probe, a upper hole drill
After complete, brill, test specimen displacement mentioned, then bore next hole, repeat n times, each drilling time is recorded；It is every by calculating
The average value of time used in hole, to judge the sharpness of drill bit, the shorter the time the sharper；Wherein, wearability namely life test:
By comparing the difference of boring time the 1st boring time and n-th, to judge the wearability (service life) of drill bit,
Obviously, the difference of time is smaller, and the wearability of drill bit is better (service life is longer).
Before drill bit test, subject drill bit is installed, so that electric drill 8 is displaced downwardly to subject drill bit 9 manually and touches standard specimen 24,
Two fixing bolts for unclamping probe bracket 31, move up and down probe bracket 31, keep the induction end of probe 32 and vernier 10 right
Just, then screwing two bolts fixes probe bracket；Lower 33 positions of popping one's head in of adjustment up and down, make the spacing etc. of itself and upper probe 32
In drilling depth；Meanwhile horizontal direction adjusts the position popped one's head in above and below, makes 3-4mm of spacing of its induction end and vernier.
When drill bit is tested, connection gas source, piston rod 2 drive connecting rod 5, vernier 10, move to highest point on electric drill 8 first；So
It is powered afterwards to electric drill 8,11 coil of two-position-five-way solenoid valve, drill bit starts turning, and piston rod 2 drives connecting rod 5, vernier 10, electric drill 8
It moves down, when vernier 10 is by 32 position of upper probe, (subject drill bit 9 touches standard specimen 24, when starting drilling) starts to count
When；Stop timing (when reaching drilling depth) when vernier 10 is by 33 position of lower probe, the time measured is to bore the 1st
Time used in hole；Then 11 coil blackout of two-position-five-way solenoid valve, piston rod 2 drive connecting rod 5, vernier 10, move to most on electric drill 8
High point；Next, the stepper motor of cross slid platform 21 acts, the mobile hole location of cross slid platform is driven；Two-position-five-way solenoid valve
11 coils are once again powered up, and electric drill 8 moves down, and play the 2nd hole and timing；The rest may be inferred, repeats n times, the control of entire drill bit test process
System, timing, record are realized by the telemetry circuit of controller.
Adjust the output pressure of pressure regulator valve 12, change cylinder 1 and impose on the pressure of tested drill bit 9, with adapt to different thicknesses and
The tested drill bit of classification；The distance between probe 32 and lower probe 33, change drilling depth, to adapt to different length in adjusting
Tested drill bit.
The drill bit of different thicknesses, the bleed pressure (pressure that piston rod 2 imposes on subject drill bit 9) when test, drilling are deep
Degree is different, and is set according to test specification；For the test specification of certain drill bit, bleed pressure is constant, each drilling depth
Centainly, electric drill is powered stabilization of speed by regulated power supply, therefore the sharpness of drill bit is completely by the temporally precise reflection used that drills
Out, the wearability (service life) of drill bit also can the difference of the time as used in the 1st hole and the hole N accurately reflect.
Claims (9)
1. drill bit test platform is installed on mounting framework it is characterized in that: it includes mounting framework, load carrier and borehole drill construction
Load carrier and borehole drill construction are integrally formed test platform；The mounting framework by siding (41) and perpendicular connection bottom
Plate (42) composition；The load carrier includes cross slid platform (21), X-axis stepper motor (22), X-axis screw rod (23), cross slid platform
(21) guide rail and supporting plate containing X-axis, Y direction, X-axis stepper motor (22) couple cross slid platform by X-axis screw rod (23) respectively
(21) X-axis supporting plate, y-axis stepper motor is by the Y-axis supporting plate of Y-axis screw rod connection cross slid platform (21), on cross slid platform (21)
It places standard specimen (24), changes the bore position of standard specimen (24) by mobile cross slid platform；The borehole drill construction packet
Include band damping cylinder (1), connecting rod (5), linear guide (6), electric drill (8), vernier (10), pressure regulator valve (12), upper probe (32) and
Lower probe (33), fixing belt damping cylinder (1) on siding (41), piston rod (2) downwards, stretch by the piston with damping cylinder (1)
Gas outlet (3), piston retract the pressure regulator valve (12) that port (4) connect gas source by two-position-five-way solenoid valve (11), band damping gas
Fixed straight line guide rail (6) on the same axis in lower section of cylinder (1), the piston rod (2) with damping cylinder (1) pass through connecting rod (5) and straight
Sliding block (7) on line guide rail (6) connects, and fixes electric drill (8) on sliding block (7), and subject drill bit (9), connecting rod are clamped on electric drill (8)
(5) vernier (10) are installed on, connecting rod (5), vernier (10), sliding block (7), electric drill (8) and subject drill bit (9) are with piston rod (2) one
It rises and is moved up and down along linear guide (6), two inductance adjustable in pitch are installed in the parallel upper and lower position in the side of connecting rod (5) and are connect
Nearly formula switch is as the i.e. upper probe (32) of position sensor and lower probe (33).
2. drill bit test platform according to claim 1, it is characterized in that: parallel in the side of siding (41) upper connecting rod (5)
Probe bracket (31) are installed in position, and probe bracket (31) is in angle bar shape；There are two strip holes on one side, are fixed to by two bolts
On siding (41) and the two bolts can be unclamped move up and down position；In another right-angle surface, top is circular hole, and lower section is strip
Hole is respectively intended to install probe (32) and lower probe (33), and the position of upper probe (32) is fixed, and the position of lower probe (33) can
It is adjusted up and down along probe bracket (31).
3. drill bit test platform according to claim 2, it is characterized in that: lower (33) position of popping one's head in of adjustment up and down, make its with
The spacing of upper probe (32) is equal to drilling depth；Meanwhile horizontal direction adjusts the position popped one's head in above and below, makes its induction end and trip
The spacing for marking (10) is 3-4mm.
4. drill bit test platform according to claim 1, it is characterized in that: installing controller, controller on siding (41)
With electric drill (8), two-position-five-way solenoid valve (11), pressure regulator valve (12), X-axis stepper motor (22), y-axis stepper motor, upper probe
(32) and lower probe (33) according to circuit mode connects and composes electrical circuit.
5. the test method of drill bit test platform according to claim 1, it is characterized in that: it is using cylinder as power source, with
Constant pressure imposes on subject drill bit, and measurement pierces the time used in the 1st hole and n-th hole of certain depth as control, judges
Drill bit sharpness and wearability, including sharpness test and wearability namely life test；
Wherein, sharpness is tested: installation subject drill bit (9) on electric drill (8), places standard specimen (24) on cross slid platform (21),
Electric drill (8) are driven to move up and down along linear guide (6) with band damping cylinder (1), subject drill bit (9) imposes standard specimen (24)
Certain pressure, subject drill bit (9) drill on standard specimen 24；Subject drill bit (9) pierces the hole depth of standard specimen (24)
It is controlled by upper probe (32) and lower probe (33)；After a upper hole is drilled, mentions brill, test specimen displacement, then bore next hole, repeat into
Row n times；Each drilling time is recorded, by calculating drilling average time used, to judge the sharpness of drill bit, when
Between it is more shorter sharper；
Wherein, wearability namely life test: by comparing the difference of boring time the 1st boring time and n-th
Value, to judge the wearability (service life) of drill bit, it is clear that the difference of time is smaller, and the wearability of drill bit is better (service life is longer).
6. the test method of drill bit test platform according to claim 5, it is characterized in that: it is turned with constant electric drill
Fast, constant drill pressure, certain drilling depth and standard specimen is continuously bored N number of hole with subject drill bit, measures each hole
Time used；I.e. under above-mentioned controlled condition, enables subject drill bit successively bore N number of hole, record time t used in each hole1——tN,
Then it is averaged, t=(t1+ t2+ ...+tN)/N, the length of t just reflects the sharpness of drill bit when boring in this way, certainly
Time is shorter, and drill bit is sharper；Bore the time t in the hole NNWith the time t in the 1st hole1Difference DELTA t=tN- t1Reflection is bored
The wearability (service life) of head, it is clear that Δ t is smaller, and the sharpness decaying of drill bit is slower, and wearability is better, and the service life is longer.
7. the test method of drill bit test platform according to claim 6, it is characterized in that: same specification, unlike material, no
With manufacturing process subject drill bit by comparing both t and both Δ t, that is, distinguishable sharpness and wearability (service life) it is excellent
Bad, t value is smaller sharper, and Δ t value is smaller more wear-resisting (service life is longer).
8. the test method of drill bit test platform according to claim 5, it is characterized in that: the drill bit of different thicknesses, test
When bleed pressure, i.e. the piston rod of cylinder imposes on the pressure of drill bit, drilling depth is different, and is set according to test specification.
9. the test method of drill bit test platform according to claim 5, it is characterized in that: the test for certain drill bit,
Bleed pressure is constant, and each drilling depth is certain, and electric drill is powered stabilization of speed by regulated power supply, and the sharpness of drill bit is completely by boring
Temporally precise used in hole reflects, and the difference of the wearability (service life) of drill bit also time as used in the 1st hole and the hole N is accurate
It reflects on ground.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563167A (en) * | 2021-12-03 | 2022-05-31 | 浙江博来工具有限公司 | Electric drill impact endurance test equipment |
| CN116577089A (en) * | 2023-07-14 | 2023-08-11 | 苏州悦来医疗器械有限公司 | Performance detection device and method for medical electric drill |
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