CN102809471A - Helical compression spring sorting machine - Google Patents
Helical compression spring sorting machine Download PDFInfo
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- CN102809471A CN102809471A CN2012102775918A CN201210277591A CN102809471A CN 102809471 A CN102809471 A CN 102809471A CN 2012102775918 A CN2012102775918 A CN 2012102775918A CN 201210277591 A CN201210277591 A CN 201210277591A CN 102809471 A CN102809471 A CN 102809471A
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- bearing plate
- force bearing
- pressure
- spring
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Abstract
The invention discloses a helical compression spring sorting machine which is provided a fixed platform. A pressure-driven cylinder is mounted on the fixed platform, a pressure bearing plate is arranged below the fixed platform and is mounted on the fixed platform by the aid of two pairs of first vertical guide rails, a counter weight floating mechanism is arranged below the pressure bearing plate and mounted on the pressure bearing plate by the aid of two pairs of second vertical guide rails, a first inductive sensor for inducting the stop time of a press stroke is mounted on the fixed platform, and a second inductive sensor for inducting the start time of floating is mounted on the pressure bearing plate. Springs are sorted by means of detecting time difference, and quantitative measurement of press pressure and spring compression amount is avoided, so that expensive pressure sensors and mobile sensors are not adopted, a mechanical structure and computing control programming are simplified, and manufacturing cost of the spring sorting machine is reduced greatly.
Description
Technical field
The present invention relates to a kind of spring sorting machine, specifically, it is a kind of spiral compression spring separator.
Background technology
In prior art; Chinese patent ZL201020622400.7 has announced " a kind of measuring tool by free height sorting railway goods train bogie spring "; It can replace vernier caliper to come the drift of measuring spring, can alleviate testing staff's labour intensity, but this detection mode still belongs to a kind of manual detection; The robotization of being unrealized, and it can only carry out sorting to this index of spring free length.Existing spiral compression spring separator generally all makes this mechanical action of length of spring compressed realize sorting through exerting pressure, in this mechanical action, need with pressure transducer and displacement transducer the decrement of pressure and spring accurately to be measured, and could realize the sorting of similar spring; For example: when spiral compression spring receives unidirectional compression; In the online elastic range, its stress and strain amount is linear, and satisfies Hooke's law σ=E ε or F=K Δ X; Be that stress σ is directly proportional with dependent variable ε; Perhaps pressure F is directly proportional with reduction length Δ X, and the E in the formula is a constant, the K stiffness factor.Through measuring the value of decrement Δ x and pressure F, can draw the stiffness factor of tested spring, the spring that stiffness factor is identical is similar spring.Chinese patent ZL88200849.8, ZL01227728.2 all belong to above-mentioned similar separator.Because what this spring sorting machine adopted is a kind of pressure and decrement accurate quantification detection mode; Therefore, the pressure transducer wherein and the accuracy requirement of displacement transducer are higher, and this just makes that the cost of sensor is very high; In the market applicable to the unit price of the pressure transducer of spring sorting machine and displacement transducer basically all more than ten thousand yuan; This should be used for saying that its price is too expensive, and this detection by quantitative is also higher to the accuracy requirement of physical construction for large-scale industrialization; It controls also corresponding more complicated with calculation procedure, thereby has increased design and the cost of making.
Summary of the invention
The objective of the invention is provides a kind of improved spiral compression spring separator to the problem in the prior art, and it has realized drift L through a kind of qualitative checking method
0The similar sorting of the spiral compression spring different with stiffness factor k, and avoid the use of pressure transducer and the displacement transducer that involves great expense, reached the purpose that reduces cost.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
It has a frame; On this frame, be provided with stationary platform; A pressure-driven cylinder is housed on this stationary platform; Below this stationary platform, be provided with a pressure force bearing plate, this pressure force bearing plate is installed on the described stationary platform through two pairs first vertical guide rails, and the piston rod of said pressure-driven cylinder and this pressure force bearing plate link; Be provided with one in the upper end of said first vertical guide rail and press down the stroke terminal sensor block, on described stationary platform, be provided with one and press down the stroke limit piece; Below described pressure force bearing plate, be provided with a counterweight relocation mechanism; This counterweight relocation mechanism has a unsteady force bearing plate; The force bearing plate that should float is installed on the described pressure force bearing plate through two pairs second vertical guide rails; On described unsteady force bearing plate, be provided with a balancing weight, be provided with a flying height h between this balancing weight and the pressure force bearing plate, below said unsteady force bearing plate, connect firmly a spring pressure head at least; On described stationary platform, be equipped with to be used to respond to and press down stroke and stop first induction pick-up constantly, on described pressure force bearing plate, be equipped with and be used to respond to second induction pick-up that floats the zero hour.
The further improved technical scheme of the present invention is following:
Said unsteady force bearing plate prolongs to the frame level, and is installed on the frame through a vertical slide unit mechanism.
Can find out through technique scheme; The present invention is provided with a counterweight relocation mechanism between the piston rod of pressure-driven cylinder and spring pressure head, and in the process of exerting pressure to spring, induces the moment T that the counterweight relocation mechanism begins to float respectively with two induction pick-ups
1With the moment T that presses down the stroke termination
2, can derive T through the equation of motion of compression spring motion process middle distance and speed
2-T
1With spring free length L
0, stiffness factor K relational expression, can sub-elect three types of springs according to this relational expression: the one, drift L
0Identical and similar spring that stiffness factor K is different; The 2nd, the identical and drift L of stiffness factor K
0Different similar springs; The 3rd, drift L
0The similar spring all inequality with stiffness factor K.The present invention is with poor (T detection time
2-T
1) mode carry out spring sorting, avoided quantitative measurment down force pressure and amount of spring compression, thereby avoided adopting expensive pressure transducer and movable sensor.T of the present invention
1, T
2Measurement only need adopt cheap two induction pick-ups (as: magnetic induction switch) can accomplish above-mentioned measurement, not only measure to calculate and control simple, and physical construction is also simple, and the precision of physical construction is not had harsh requirement yet, realizes easily.In sum, the present invention changes into qualitative detection with existing detection by quantitative, has simplified the programming of physical construction and calculation control, greatly reduces the cost cost of spring sorting machine.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Fig. 2 is the right view of Fig. 1.
Embodiment
Referring to Fig. 1,2; It has a frame (1); This frame has an inverted T-shaped frame main body; Connect firmly a stationary platform (2) on the top of this inverted T-shaped frame main body, a pressure-driven cylinder (3) is housed on this stationary platform, below this stationary platform, be provided with a pressure force bearing plate (4); This pressure force bearing plate is installed on the described stationary platform (2) through two pairs first vertical guide rails (5); The piston rod of said pressure-driven cylinder and this pressure force bearing plate link, and are provided with one in the upper end of said first vertical guide rail (5) and press down stroke terminal sensor block (6), on described stationary platform (2), are provided with one and press down stroke limit piece (7); Below described pressure force bearing plate, be provided with a counterweight relocation mechanism (8); This counterweight relocation mechanism has a unsteady force bearing plate (8-1); The force bearing plate that should float is installed on the described pressure force bearing plate through two pairs second vertical guide rails (8-2); On described unsteady force bearing plate, be provided with a balancing weight (8-3); Be provided with a flying height h between described balancing weight (8-3) and the pressure force bearing plate (4), connect firmly a spring pressure head (8-5) at least in the below of said unsteady force bearing plate (4); On described stationary platform (2), be equipped with to be used to respond to and press down stroke and stop first induction pick-up (9) constantly, on described pressure force bearing plate (4), be equipped with and be used to respond to second induction pick-up (10) that floats the zero hour.
For the action of counterweight relocation mechanism more steady; Said unsteady force bearing plate prolongs to frame (1) level; And be installed on the frame (1) through a vertical slide unit mechanism, described vertical slide unit mechanism is made up of vertical slide unit (11) and vertical slide rail (12).
Work of the present invention and grading principle are following:
One, the testing process of this separator:
Pressure-driven cylinder (3) driving pressure force bearing plate (4) is with constant speed V
0Move downward along first vertical guide rail (5), during the motion beginning, control system is write down initial motion T constantly
0At this moment, counterweight relocation mechanism (8) does not also touch tested spring (13), and it is followed pressure force bearing plate (4) and moves downward together under the effect of self gravitation; When counterweight relocation mechanism (8) touched tested spring (13), the action of gravity of counterweight relocation mechanism was on tested spring, and then tested spring produces a compression set amount Δ x
1, simultaneously, tested spring is given the reacting force of one of counterweight relocation mechanism; Stop that the counterweight relocation mechanism continues to move downward, at this moment, pressure force bearing plate (4) continues to move downward; Suppose that pressure force bearing plate (4) at this moment is static, then counterweight relocation mechanism (8), floats when beginning to float with respect to pressure force bearing plate (4); Relative second induction pick-up of force bearing plate (8-1) (10) that floats upwards misplaces; Then second induction pick-up (10) triggers, and simultaneously, control system is write down this second induction and triggered T constantly
1After the unsteady h distance of counterweight relocation mechanism (8), balancing weight (8-3) sticks together up and down with pressure force bearing plate (4) and continues to move downward, and begins to compress tested spring (13); When compression travel is at the end; Press down stroke terminal sensor block (6) and drop on and press down on the stroke limit piece (7), thus limited cylinder continue press down, at this moment; Press down stroke terminal sensor block (6) and first induction pick-up (9) contraposition; Then first induction pick-up (9) triggers, and simultaneously, control system is write down this first induction and triggered T constantly
2Control system is carried out computational discrimination then, and provides the result.Afterwards, entire mechanism begins drawback movement, gets back to original state, waits for that detect round-robin begins next time.
Two, computational discrimination:
1, suppose:
The stiffness factor of K---spring
L
0---the drift of spring
L
T2---the length after the length of spring compressed
H---the flying height of counterweight relocation mechanism (8)
Δ x
1---the deflection that spring produces under the effect of counterweight relocation mechanism (8) gravity
V
0---the speed that the constant speed of cylinder presses down
H---the height that pressure force bearing plate (4) moves downward
M---the quality of counterweight relocation mechanism (8)
The quality of m---balancing weight (8-3)
G---acceleration of gravity
H
1---motion begins to balancing weight (8-3) and pressure force bearing plate (4) height that the pressure force bearing plate moves downward when contacting
T
1---the triggered time of second induction pick-up
T
2---the triggered time of first induction pick-up
2, computing formula:
Can draw by above-mentioned whole motion process:
H=H
1+（L
0—Δx
1）?⑴
The following formula both sides are simultaneously divided by V
0And be out of shape:
According to speed formula and Hooke's law, in the ⑵ formula:
⑵ gets with ⑶ ⑷ ⑸ formula substitution formula:
Put in order
Among the formula ⑹, V
0With M be the constant of default, and Mg＜L
0K.
From formula ⑹, can find out poor (T of the triggered time of two induction pick-ups
2-T
1) with the drift L of spring
0Relevant with the stiffness factor K of spring, according to formula ⑹, this machine can carry out similar selection to the spring of following different size:
(a), known drift L
0Stiffness factor K identical, spring is different, then poor (T of triggered time
2-T
1) depending on the stiffness factor K of tested spring, its method for separating is following:
The spring S that selects a unknown stiffness factor is as demarcating spring, and correspondence records demarcates poor (T of spring S triggered time
2-T
1), should the triggered time difference be set at examination criteria then, as poor (T of the triggered time that records of other spring
2-T
1) with demarcate spring when identical, can confirm that then this tested spring is identical with demarcation spring S.
(b), identical, the drift L of known stiffness factor K
0Difference, then poor (T of triggered time
2-T
1) depend on its drift L
0, its method for separating is following:
Select a unknown free length L
0Tested spring S as demarcating spring, correspondence records demarcates poor (T of spring triggered time
2-T
1), should the triggered time difference be set at examination criteria then, as poor (T of the triggered time that records of other spring
2-T
1) with demarcate spring when identical, can confirm that then this tested spring is identical with demarcation spring S.
(c), known drift L
0All inequality with stiffness factor K, poor (T of triggered time then
2-T
1) depend on its drift L
0With stiffness factor K, its method for separating is following:
Select a unknown free length L
0With the spring S of stiffness factor K as demarcating spring, correspondence records the poor (T of triggered time that demarcates spring
2-T
1), should the triggered time difference be set at examination criteria then, as poor (T of the triggered time that records of other spring
2-T
1) with demarcate spring when identical, can confirm that then this tested spring is identical with demarcation spring S.
In above-mentioned detection, possibly exist demarcation spring S different with the drift and the stiffness factor of tested spring, but the mistiming (T that records
2-T
1) identical, erroneous judgement will appear in this case, for avoiding this erroneous judgement, needs before above-mentioned detection, to proofread and correct with the quality m that adjusts balancing weight, and its updating formula is derived as follows:
If: the drift of demarcating spring S is L
1, its stiffness factor is K
1, the drift that tested spring is is L
2, its stiffness factor is K
2
With L
1, K
1And L
2, K
2Substitution formula ⑹ respectively, then the two formula equal sign left sides equate following formula:
Put in order:
According to formula ⑺; The quality m of adjustment balancing weight makes
then can avoid above-mentioned flase drop.
3, the restrictive condition of above-mentioned detection:
reason is following:
If h=0 means that counterweight relocation mechanism (8) can not float, then second induction pick-up (10) can't trigger, then poor (T of triggered time
2-T
1) can't calculate.
If
Mean that when counterweight relocation mechanism 8 touches tested spring tested spring is not to form to stop to counterweight relocation mechanism (8), but forms springback, thereby causes the false triggering of second induction pick-up, then can't accurately detect T
1
Claims (2)
1. spiral compression spring separator is characterized in that:
It has a frame (1); On this frame, be provided with stationary platform (2); A pressure-driven cylinder (3) is housed on this stationary platform; Below this stationary platform, be provided with a pressure force bearing plate (4), this pressure force bearing plate is installed on the described stationary platform (2) through two pairs first vertical guide rails (5), and the piston rod of said pressure-driven cylinder and this pressure force bearing plate link; Be provided with one in the upper end of said first vertical guide rail (5) and press down stroke terminal sensor block (6), on described stationary platform (2), be provided with one and press down stroke limit piece (7);
Be provided with a counterweight relocation mechanism (8) in described pressure force bearing plate (4) below; This counterweight relocation mechanism has a unsteady force bearing plate (8-1); The force bearing plate that should float is installed on the described pressure force bearing plate through two pairs second vertical guide rails (8-2); On described unsteady force bearing plate, be provided with a balancing weight (8-3); Be provided with a flying height h between this balancing weight (8-3) and the pressure force bearing plate (4), connect firmly a spring pressure head at least in the below of said unsteady force bearing plate (4)
（8-5）；
On described stationary platform (2), be equipped with to be used to respond to and press down stroke and stop first induction pick-up (9) constantly, on described pressure force bearing plate (4), be equipped with and be used to respond to second induction pick-up (10) that floats the zero hour.
2. spiral compression spring separator according to claim 1 is characterized in that: said unsteady force bearing plate prolongs to frame (1) level, and is installed on the frame (1) through a vertical slide unit mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277591.8A CN102809471B (en) | 2012-08-06 | 2012-08-06 | Helical compression spring sorting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277591.8A CN102809471B (en) | 2012-08-06 | 2012-08-06 | Helical compression spring sorting machine |
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| Publication Number | Publication Date |
|---|---|
| CN102809471A true CN102809471A (en) | 2012-12-05 |
| CN102809471B CN102809471B (en) | 2014-11-26 |
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ID=47233235
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210277591.8A Expired - Fee Related CN102809471B (en) | 2012-08-06 | 2012-08-06 | Helical compression spring sorting machine |
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| Country | Link |
|---|---|
| CN (1) | CN102809471B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248325A (en) * | 2016-07-12 | 2016-12-21 | 中国地质大学（北京） | Extraordinary probing component wear detection method and detection equipment under a kind of liquid medium |
| CN106525363A (en) * | 2016-08-30 | 2017-03-22 | 浙江万安科技股份有限公司 | Device for detecting relation between displacement and feedback force of elastic part |
| CN109406074A (en) * | 2018-11-15 | 2019-03-01 | 中车石家庄车辆有限公司 | Separator for spring elastic measuring head |
| CN111551325A (en) * | 2020-03-31 | 2020-08-18 | 厦门理工学院 | Spring height precision measurement device |
| CN111843445A (en) * | 2020-06-29 | 2020-10-30 | 浙江奇碟汽车零部件有限公司 | Damping spring grouping and assembling device for clutch damping spring assembling machine |
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| CN2035474U (en) * | 1988-01-26 | 1989-04-05 | 国家机械委武汉计算机外部设备研究所 | Separator for spring |
| CN2484553Y (en) * | 2001-06-29 | 2002-04-03 | 孙旭峰 | Spring separator |
| CN2752749Y (en) * | 2004-11-29 | 2006-01-18 | 许晓华 | Spring tester |
| CN201138275Y (en) * | 2007-12-27 | 2008-10-22 | 石家庄南车铁龙机电有限公司 | Automatic test apparatus for microcomputer controlled spring |
| CN201331422Y (en) * | 2009-01-22 | 2009-10-21 | 安徽蓝德集团股份有限公司 | Hydraulic spring fatigue-testing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1727012A1 (en) * | 1989-10-06 | 1992-04-15 | Всесоюзный научно-исследовательский, проектно-конструкторский и технологический институт электровозостроения | Device for determining rigidity parameters of helical compression springs |
-
2012
- 2012-08-06 CN CN201210277591.8A patent/CN102809471B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN2035474U (en) * | 1988-01-26 | 1989-04-05 | 国家机械委武汉计算机外部设备研究所 | Separator for spring |
| CN2484553Y (en) * | 2001-06-29 | 2002-04-03 | 孙旭峰 | Spring separator |
| CN2752749Y (en) * | 2004-11-29 | 2006-01-18 | 许晓华 | Spring tester |
| CN201138275Y (en) * | 2007-12-27 | 2008-10-22 | 石家庄南车铁龙机电有限公司 | Automatic test apparatus for microcomputer controlled spring |
| CN201331422Y (en) * | 2009-01-22 | 2009-10-21 | 安徽蓝德集团股份有限公司 | Hydraulic spring fatigue-testing machine |
Non-Patent Citations (1)
| Title |
|---|
| 徐树兴 等: ""智能化弹簧高度在线检测及自动分选***"", 《电测与仪表》, no. 2, 1 March 1992 (1992-03-01), pages 15 - 17 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248325A (en) * | 2016-07-12 | 2016-12-21 | 中国地质大学（北京） | Extraordinary probing component wear detection method and detection equipment under a kind of liquid medium |
| CN106525363A (en) * | 2016-08-30 | 2017-03-22 | 浙江万安科技股份有限公司 | Device for detecting relation between displacement and feedback force of elastic part |
| CN109406074A (en) * | 2018-11-15 | 2019-03-01 | 中车石家庄车辆有限公司 | Separator for spring elastic measuring head |
| CN111551325A (en) * | 2020-03-31 | 2020-08-18 | 厦门理工学院 | Spring height precision measurement device |
| CN111843445A (en) * | 2020-06-29 | 2020-10-30 | 浙江奇碟汽车零部件有限公司 | Damping spring grouping and assembling device for clutch damping spring assembling machine |
| CN111843445B (en) * | 2020-06-29 | 2021-08-17 | 浙江奇碟汽车零部件有限公司 | Damping spring grouping and assembling device for clutch damping spring assembling machine |
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| CN102809471B (en) | 2014-11-26 |
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