CN214080521U - Pre-detection device for reverse clearance of lead screw - Google Patents
Pre-detection device for reverse clearance of lead screw Download PDFInfo
- Publication number
- CN214080521U CN214080521U CN202023089873.4U CN202023089873U CN214080521U CN 214080521 U CN214080521 U CN 214080521U CN 202023089873 U CN202023089873 U CN 202023089873U CN 214080521 U CN214080521 U CN 214080521U
- Authority
- CN
- China
- Prior art keywords
- lead screw
- support
- guide rails
- supporting platform
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to a lead screw reverse clearance pre-detection device, which consists of a supporting platform, guide rails, a driving motor, a lead screw front support, a lead screw rear support, a tooling support plate, a grating ruler, a reading head support and a lead screw to be detected, wherein two groups of guide rails are arranged at the left end and the right end of the supporting platform in parallel; the tool support plate acts on the two groups of guide rails through the slide block and can move back and forth along the guide rails, and the middle part of the tool support plate is provided with a screw seat; the lead screw front support and the lead screw rear support are respectively arranged at the front end and the rear end of the support platform, a lead screw to be tested is supported front and back through the lead screw front support and the lead screw rear support and is driven by a driving motor to rotate, and a nut of the lead screw to be tested is arranged on a nut seat of the tool support plate; the grating ruler is arranged on the supporting platform and is parallel to the lead screw to be measured and the guide rail, and a reading head of the grating ruler is arranged on the tool supporting plate through a reading head support. The utility model discloses simple structure, easily operation, the environmental requirement is low, detects with low costsly, and detection efficiency is high.
Description
Technical Field
The utility model belongs to the machining field, in particular to reverse clearance's of lead screw preliminary detection device.
Background
The screw backlash is one of the factors that affect the machining accuracy, and when the numerically controlled machine tool is reversed in its direction of motion, it causes lost motion, i.e., the servo motor is idling without actually moving, due to the presence of the backlash. If the value of the reverse clearance is small, the influence on the machining precision is small; if the numerical value is larger, the stability of the system is obviously reduced, the machining precision is obviously reduced, and particularly, the consistency of the dimensional tolerance and the curve is influenced by curve machining, so that the reverse clearance of the screw rod needs to be measured.
At present, the measurement of the reverse clearance of the screw is carried out on a numerical control machine tool, namely, after the screw is assembled on the numerical control machine tool, the reverse clearance of the screw can be reflected only when the positioning precision, the repeated positioning precision and the reverse clearance of the whole machine of the numerical control machine tool are compensated by adopting a Reynleast laser interferometer. The detection method has the advantages that the assembly is carried out firstly and then the detection is carried out, the lead screw needs to be disassembled and replaced if the reverse clearance of the lead screw is detected to be not in accordance with the use requirement, and then the detection is carried out again until the detection is in accordance with the requirement, so that the assembly efficiency and the assembly precision of the machine tool are greatly influenced. And Renysha laser interferometer is not a device for detecting the reverse clearance of the lead screw in a targeted manner, has higher requirements on operators and test environment in the using process, has relatively lower test efficiency and higher cost, and is not beneficial to the rapid detection of the reverse clearance of the lead screw.
Disclosure of Invention
An object of the utility model is to overcome prior art not enough, provide a simple structure, easily operation, the environmental requirement is low, and detection cost is low, lead screw reverse clearance preliminary examination device that detection efficiency is high.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a device for pre-detecting a lead screw reverse clearance comprises a supporting platform, guide rails, a driving motor, a lead screw front support, a lead screw rear support, a tool support plate, a grating ruler, a reading head support and a lead screw to be detected, wherein two groups of guide rails are arranged at the left end and the right end of the supporting platform in parallel; the tool support plate acts on the two groups of guide rails through the slide block and can move back and forth along the guide rails, and the middle part of the tool support plate is provided with a screw seat; the screw rod front support and the screw rod rear support are respectively arranged at the front end and the rear end of the supporting platform, and the front end of the screw rod front support is provided with a driving motor; the lead screw to be tested is supported front and back through the lead screw front support and the lead screw rear support and is driven to rotate by the driving motor, and a nut of the lead screw to be tested is arranged on a nut seat of the tooling support plate; the grating ruler is arranged on the supporting platform and is parallel to the lead screw to be measured and the guide rail, and a reading head of the grating ruler is arranged on the tool supporting plate through a reading head support.
According to the device for pre-detecting the reverse clearance of the lead screw, the mounting position of the rear support of the lead screw on the supporting platform can be adjusted back and forth according to the length of the lead screw to be detected.
According to the device for pre-detecting the reverse clearance of the lead screw, the bearings are arranged in the front lead screw support and the rear lead screw support, and the lead screw to be detected is arranged on the bearings.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses utilize grating chi's position to detect the function and realized the detection to the reverse clearance of lead screw, can carry out earlier stage management and control and prejudge to the lead screw, avoided because the reverse clearance is not conform to operation requirement and go on the dismouting that relapses, can effectively improve the assembly efficiency of lathe. And the utility model discloses simple structure, it is with low costs, with strong points, convenient operation requires lowly to operating personnel technical merit and service environment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the detection process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model discloses a lead screw reverse clearance's preliminary examination device comprises supporting platform 1, guide rail 2, driving motor 3, lead screw front support 4, lead screw rear support 5, frock extension board 6, grating chi 7, reading head support 8 and the lead screw 9 that awaits measuring.
Two sets of guide rails 2 are parallelly installed at the left end and the right end of the supporting platform 1, a front screw support 4 and a rear screw support 5 are respectively installed at the front end and the rear end of the supporting platform 1, and bearings are respectively arranged in the front screw support 4 and the rear screw support 5. The lead screw 9 to be tested is arranged between the two groups of guide rails 2 in parallel, and the front end and the rear end of the lead screw are respectively installed with the two groups of bearings in a matching mode. The lead screw 9 to be tested can rotate under the action of the driving motor 3, and the driving motor 3 is installed on the supporting platform 1 and is positioned at the front end of the lead screw front support 4. The tooling support plate 6 is erected on the two groups of guide rails 2 through the slide block 10 and can move back and forth along the guide rails 2, the nut seat 61 is arranged in the middle of the tooling support plate 6, and a nut of the lead screw 9 to be tested is arranged on the nut seat 61. The grating ruler 7 is installed on the supporting platform 1 and is parallel to the lead screw 9 to be measured and the guide rail 2, and a reading head of the grating ruler 7 is installed on the tooling support plate 6 through a reading head support 8.
In order to realize the detection of the lead screws with different specifications, the mounting position of the lead screw rear support 5 on the supporting platform 1 can be adjusted back and forth according to the length of the lead screw 9 to be detected.
Before the detection is started, the position of the screw rear support 5 is adjusted according to the length of the screw 9 to be detected, then the screw 9 to be detected is inserted into bearing holes of the screw front support 4 and the screw rear support 5, and the detection can be started after the adjustment of the equal height and the parallel. The driving motor 3 drives the lead screw 9 to be tested to rotate, and further drives the tool support plate 6 to move along the guide rail 2, and the grating ruler 7 can record the position coordinate of the running lead screw 9 to be tested.
Setting N detection references M in the full stroke range of the lead screw to be detectedi(i =1, 2, … …, N), as shown in fig. 2, the driving motor 3 drives the lead screw 9 to be tested to rotate, so that the tooling support plate 6 moves to the detection reference MiAnd continuing to rotate the screw rod to be tested in the same direction to enable the tooling support plate 6 to move for a distance S, then driving the screw rod to be tested 9 to rotate in the opposite direction to enable the tooling support plate 6 to move for the same distance S ´ in the opposite direction, namely S = S ´, and defining the actual stop position as Mi´, detecting actual stop using grating rulerEnd position Mi´ and detection reference MiPosition difference Δ M betweeniAs the reverse gap BR of this measurementiI.e. BRi=△Mi. Continuously driving the screw rod 9 to be measured to rotate, enabling the tool support plate 6 to move to the next detection reference, repeating the measurement steps to obtain another measurement reverse clearance value, and obtaining N measurement reverse clearance values BR in total until all the detection references are detected completelyi(i =1, 2, … …, N), the maximum of which is taken as the final counter clearance of the screw. According to the final result, whether the reverse clearance of the screw meets the use requirement can be judged, and if so, the screw can be assembled into a numerical control machine tool.
Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can make various modifications according to the principle of the present invention. Therefore, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (3)
1. The device for pre-detecting the lead screw reverse clearance is characterized by comprising a supporting platform, guide rails, a driving motor, a lead screw front support, a lead screw rear support, a tooling support plate, a grating ruler, a reading head support and a lead screw to be detected, wherein the two groups of guide rails are arranged at the left end and the right end of the supporting platform in parallel; the tool support plate acts on the two groups of guide rails through the slide block and can move back and forth along the guide rails, and the middle part of the tool support plate is provided with a screw seat; the screw rod front support and the screw rod rear support are respectively arranged at the front end and the rear end of the supporting platform, and the front end of the screw rod front support is provided with a driving motor; the lead screw to be tested is supported front and back through the lead screw front support and the lead screw rear support and is driven to rotate by the driving motor, and a nut of the lead screw to be tested is arranged on a nut seat of the tooling support plate; the grating ruler is arranged on the supporting platform and is parallel to the lead screw to be measured and the guide rail, and a reading head of the grating ruler is arranged on the tool supporting plate through a reading head support.
2. The device for pre-detecting the reverse gap of the lead screw according to claim 1, wherein the mounting position of the rear support of the lead screw on the supporting platform can be adjusted back and forth according to the length of the lead screw to be detected.
3. The device for pre-detecting the reverse gap of the lead screw according to claim 1 or 2, wherein bearings are arranged in the front lead screw support and the rear lead screw support, and the lead screw to be detected is arranged on the bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089873.4U CN214080521U (en) | 2020-12-21 | 2020-12-21 | Pre-detection device for reverse clearance of lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089873.4U CN214080521U (en) | 2020-12-21 | 2020-12-21 | Pre-detection device for reverse clearance of lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214080521U true CN214080521U (en) | 2021-08-31 |
Family
ID=77430918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023089873.4U Active CN214080521U (en) | 2020-12-21 | 2020-12-21 | Pre-detection device for reverse clearance of lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214080521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440155A (en) * | 2020-12-21 | 2021-03-05 | 廊坊精雕数控机床制造有限公司 | Device and method for pre-detecting reverse clearance of lead screw |
| CN113909993A (en) * | 2021-10-25 | 2022-01-11 | 深圳市拓智者科技有限公司 | Reverse clearance measuring method, machining method and measuring system |
-
2020
- 2020-12-21 CN CN202023089873.4U patent/CN214080521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440155A (en) * | 2020-12-21 | 2021-03-05 | 廊坊精雕数控机床制造有限公司 | Device and method for pre-detecting reverse clearance of lead screw |
| CN113909993A (en) * | 2021-10-25 | 2022-01-11 | 深圳市拓智者科技有限公司 | Reverse clearance measuring method, machining method and measuring system |
| CN113909993B (en) * | 2021-10-25 | 2024-05-14 | 深圳市拓智者科技有限公司 | Reverse gap measuring method, machining method and measuring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214080521U (en) | Pre-detection device for reverse clearance of lead screw | |
| CN104236483A (en) | Device and method for measuring precision and friction force of rolling linear guide rail pair | |
| CN102927932B (en) | Overlong workpiece linearity detection device driven by composite micro-feeding axis | |
| CN102538700B (en) | Screw rotor type surface profile error measurement instrument | |
| CN102809350B (en) | The accumulation lead error determinator of ballscrew shaft and assay method | |
| CN103134671B (en) | Rolling linear guideway rated dynamic load and service life testing device | |
| CN111765844A (en) | System and method for detecting dynamic error of grating ruler | |
| CN104731088B (en) | A method of test ball screw assembly, control method performance | |
| CN102278957A (en) | Positioning and measuring tool and method for guide rail of high-accuracy and long-distance machine tool | |
| CN110926801A (en) | Small-size joint comprehensive properties test machine of service robot | |
| CN109143967B (en) | Feeding system thermal error testing device and method for simulating cutting force loading condition | |
| CN212300247U (en) | Detection system for dynamic error of grating ruler | |
| CN102022966A (en) | Measurement method and device of guide rail, screw rod and nut seat comprehensive assembly accuracy of numerical control machine | |
| CN109682751A (en) | Multifunctional material surface property tester and its control system | |
| CN107449372B (en) | Laser triangle-based ball screw nut comprehensive parameter detection device and method | |
| CN112440155A (en) | Device and method for pre-detecting reverse clearance of lead screw | |
| CN204202574U (en) | Linear rolling guide precision and friction measurement device | |
| CN102658503A (en) | Modal testing method of numerical control machine tool feed system based on built-in sensors | |
| CN207622702U (en) | A kind of controllable laser displacement sensor calibration system of environment based on length gauge | |
| CN113310448B (en) | Roll bending forming structural part curvature radius online detection device and detection method thereof | |
| CN109406143A (en) | Ball screw assembly precision retaining ability testing device and method based on real working condition | |
| CN212747866U (en) | Two-dimensional automatic calibration platform for target plate instrument | |
| CN203141229U (en) | Large shaft part cylindricity measurement device based on V-shaped block method | |
| CN116222375A (en) | Non-contact size detection device for small and medium-sized bearings | |
| CN221144896U (en) | Hydraulic cylinder stroke measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |