CN204373588U - Electronics digital indicator - Google Patents
Electronics digital indicator Download PDFInfo
- Publication number
- CN204373588U CN204373588U CN201520038152.0U CN201520038152U CN204373588U CN 204373588 U CN204373588 U CN 204373588U CN 201520038152 U CN201520038152 U CN 201520038152U CN 204373588 U CN204373588 U CN 204373588U
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- mold height
- magnetic ring
- permanent magnet
- digital indicator
- switching element
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Abstract
The utility model relates to a kind of electronics digital indicator, for detected pressures machine mold height, realizes the fine adjustment of mold height, belongs to pressing machine survey control technology field.Principal feature is the solid permanent magnet magnetic ring of cover on the mechanical rotation axle in housing respective wall, and printed circuit board fixes Hall switching element, and Hall switching element is relative with permanent magnet magnetic ring surface.The utility model is by arranging permanent magnet magnetic ring, Hall switching element, the change in non-contact inductive permanent magnet magnetic ring magnetic field, export the pulse voltage signal corresponding with mechanical rotation axle absolute angular position, single-chip microcomputer by analog interface sample all pulse voltage signals look into solidification form draw mechanical rotation axle absolute angle angle value, the number of turns that real-time computer tool rotation axis rotates, current mold height value.Can be arranged the bound of mold height by man-machine interface, mould slide block gear tooth is apart from ratio, and mold height displayed value increases the direction of reducing, and the displayed value consistance realizing actual mold height value and electronics digital indicator is calibrated.
Description
Technical field
The utility model relates to a kind of electronics digital indicator, for detected pressures machine mold height, realizes the fine adjustment of mold height, belongs to pressing machine survey control technology field.
Background technology
Current normally used die of press high measure instrument or to be called that digital indicator has mechanical, is formed primarily of housing, mechanical rotation axle, gear, proximity switch.Mechanical rotation axle rotates along with moving up and down of press ram, and then the rotation of driving mechanical gear, the numeral on gear shows current mold height value in real time, when mold height reaches the higher limit of setting, corresponding proximity switch action, press ram can not move up again; When mold height reaches the lower limit of setting, corresponding proximity switch action, press ram can not move down again.This mechanical digital indicator Problems existing is: (1), when pressing machine model change, the upper lower limit value that namely mold height regulates changes, and mould slide block gear tooth changes apart from ratio, then die height indicator must customized production again, can not be general; (2) height shown when true altitude and the mold height digital indicator of die of press is different, then mold height digital indicator must be pulled down from press ram, is loaded on, which increases the workload of mold height calibration after adjustment is consistent; (3) press ram is rotated by the mechanical rotation shaft driven gear of digital indicator, has several digital indicators just to have what gear drive, and Long-Time Service mechanical wear causes digital indicator precision to reduce.
Also use a kind of electronics digital indicator at present, it is primarily of housing, mechanical rotation axle, power circuit, single-chip microcomputer, control output circuit, display circuit is formed, mechanical rotation axle is provided with circular code-disc, luminescent device, code-disc and photoelectric receiving device composition mechanical rotation axle turned position testing circuit, along with moving up and down of press ram, mechanical rotation axle drives code-disc to rotate, in the process that code-disc rotates, the light signal that light receiving element receives is with or without alternately change, and then export the pulse voltage signal of certain frequency, sample circuit draws the absolute position of Current mechanical rotation axis by the number detecting pulse voltage signal, the number of turns of rotation and current mold height just can be drawn by calculating, judge the bound of mold height again, the action controlling output circuit forbids that the continuation of press ram is moved.This electronics digital indicator Problems existing is: (1) due to industrial environment severe, dust is many, once there be dust on luminescent device or code-disc or light receiving element, the light signal that then light receiving element detects will be made mistakes, even can't detect light signal, cause voltage pulse output number to be made mistakes or no-output, the mechanical rotation axle absolute position of detection and the mold height value of calculating are also just inaccurate.(2) again because industry spot greasy dirt is large, because digital indicator installation site is special, various lubricating oil on pressing machine, machine oil all likely enters electronics digital indicator on a small quantity, except the light signal detected except causing light receiving element is made mistakes, also can damage code-disc, luminescent device, light receiving element, finally cause the mold height value of display inaccurate.
Utility model content
The above-mentioned defect that the mechanical digital indicator installed at present for pressing machine and electronics digital indicator exist, the utility model provides a kind of electronics digital indicator, there is the basic mold height bound of digital indicator arrange, the function of the ratio setting of tooth distance and actual mould altitude calibration, solving existing machinery digital indicator by the utility model can not be general on different model pressing machine, the problem that die of press altitude calibration workload is large.Solve that existing electronics digital indicator is not dust-proof in severe industry spot, not oil-stain-preventing, the problem that long-time running mold height value display precision declines simultaneously.
The utility model is achieved through the following technical solutions, a kind of electronics digital indicator, comprise power circuit, single-chip microcomputer, control output circuit, display circuit on printed circuit board 3 in the mechanical rotation axle 2 in housing 1, housing 1 respective wall, housing 1, it is characterized in that, the solid permanent magnet magnetic ring 5 of cover on mechanical rotation axle 2, printed circuit board 3 is fixed Hall switching element 4, Hall switching element 4 is relative with permanent magnet magnetic ring 5 surface, and the output of Hall switching element (4) connects the input end of single-chip microcomputer.
Described printed circuit board 3 is fixedly no less than two Hall switching elements 4.
Described permanent magnet magnetic ring 5 is for being no less than the radial magnetic ring of a pair magnetic pole.
Described single-chip microcomputer adopts AT89Cxx or C8051Fxx or STC1xx.
The utility model is by arranging permanent magnet magnetic ring, Hall switching element, the change in non-contact inductive permanent magnet magnetic ring magnetic field, mechanical axis revolves the pulse voltage signal that the Hall switching element that turns around exports fixed number, single-chip microcomputer draws mechanical rotation shaft angle angle value by counting, the number of turns that real-time computer tool rotation axis rotates, current mold height value.Can be arranged the bound of mold height by man-machine interface, mould slide block gear tooth is apart from ratio, and mold height displayed value increases the direction of reducing, and the displayed value consistance realizing actual mold height value and electronics digital indicator is calibrated.
Accompanying drawing explanation
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the scheme of installation of the Hall switching element of partial structurtes schematic diagram in the utility model middle shell;
In figure, 1 housing, 2 mechanical rotation axles, 3 printed circuit boards, 4 Hall switching elements, 5 permanent magnet magnetic rings.
Embodiment
Further illustrate the utility model in conjunction with the accompanying drawings and embodiments, as shown in Figure 1, the utility model provides DC voltage by power module, powers to single-chip microcomputer, Hall switching element 4.The IO of single-chip microcomputer drives man-machine interface, refreshes charactron, scanning button.The pulse voltage signal corresponding with mechanical rotation axle 2 rotary angle position that single-chip microcomputer exports Hall switching element 4 carries out counting and draws angle value, the number of turns that mechanical rotation axle 2 rotates is drawn by simple computation, judge mold height bound, control to drive the outside forceful electric power switch of interface on-off, show real-time mold height value.As shown in Figure 2, the printed circuit board of mechanical rotation axle 2 and fixing Hall switching element 4 is arranged in the housing 1 of electronics digital indicator, Hall switching element 4 is vertically fixed on the position near permanent magnet magnetic ring 5 on printed circuit board, and permanent magnet magnetic ring 5 is fixed in the top of mechanical rotation axle 2.Hall switching element supply voltage is DC voltage, output rotate pulse voltage signal corresponding to absolute angular position with mechanical rotation axle 2.
As shown in Figure 2, two Hall switching elements 4 are relative with permanent magnet magnetic ring 5 surface, are fixed on the edge of printed circuit board, separately certain angle in the installation of Hall switching element.
In the utility model, Hall switching element 4 is contained in permanent magnet magnetic ring 5 on mechanical rotation axle 2 for the radial magnetic ring being no less than a pair magnetic pole by non-contact inductive in rotary course, produces the change in magnetic field, export the pulse voltage rotating absolute angle corresponding relation with mechanical rotation axle 2, in the present embodiment, permanent magnet magnetic ring 5 is the radial magnetic ring of a pair magnetic pole.Single-chip microcomputer is sampled to the analog voltage that linear hall element 4 exports, the absolute angle angle value that mechanical rotation axle 2 rotates is drawn by searching fixed table, and then calculate the number of turns of mechanical rotation axle 2 rotation, current mold height value, and show, because of mechanical transmission in the utility model, Long-Time Service is on precision change not impact.Carry out the judgement of mold height bound to be moved by the continuation driving interface circuit and control outside forceful electric power switch disable press ram simultaneously.Parameter setting function can arrange the upper lower limit value of mold height within the specific limits arbitrarily, mould slide block gear tooth is apart from ratio, mold height displayed value increases the direction value reduced, and the displayed value realizing electronics digital indicator is calibrated with actual mold height value consistance.In severe industry spot, dust-proof, oil rub resistance, long-term high precision reliability service.
Claims (3)
1. an electronics digital indicator, comprise the mechanical rotation axle (2) in housing (1), housing (1) respective wall, power circuit, single-chip microcomputer, control output circuit, the display circuit on housing (1) interior printed circuit board (3), it is characterized in that, the solid permanent magnet magnetic ring (5) of the upper cover of mechanical rotation axle (2), the upper fixing Hall switching element (4) of printed circuit board (3), Hall switching element (4) is relative with permanent magnet magnetic ring (5) surface, and the output of Hall switching element (4) connects the input end of single-chip microcomputer.
2. electronics digital indicator according to claim 1, is characterized in that, described printed circuit board (3) is upper is fixedly no less than two Hall switching elements (4).
3. electronics digital indicator according to claim 1, is characterized in that, described permanent magnet magnetic ring (5) is for being no less than the radial magnetic ring of a pair magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038152.0U CN204373588U (en) | 2015-01-20 | 2015-01-20 | Electronics digital indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038152.0U CN204373588U (en) | 2015-01-20 | 2015-01-20 | Electronics digital indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204373588U true CN204373588U (en) | 2015-06-03 |
Family
ID=53329802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520038152.0U Active CN204373588U (en) | 2015-01-20 | 2015-01-20 | Electronics digital indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204373588U (en) |
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2015
- 2015-01-20 CN CN201520038152.0U patent/CN204373588U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |