CN110186346B - Large extruder frame gap detection method and ground support - Google Patents
Large extruder frame gap detection method and ground support Download PDFInfo
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- CN110186346B CN110186346B CN201910499311.XA CN201910499311A CN110186346B CN 110186346 B CN110186346 B CN 110186346B CN 201910499311 A CN201910499311 A CN 201910499311A CN 110186346 B CN110186346 B CN 110186346B
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- dial indicator
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- 238000001514 detection method Methods 0.000 title abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/22—Feeler-pin gauges, e.g. dial gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a large extruder frame gap detection method, which is characterized in that the actual elongation of a pull rod during pressing is obtained by measuring the elongation change of the front end and the rear end of the pull rod during pressing of a large extruder, the gap elongation of the pull rod relative to the large extruder is obtained by measuring the displacement change of the front end and the rear end of a pressing sleeve of the large extruder relative to a front beam and a rear beam respectively during pressing, and finally the gap value of the large extruder frame is obtained by subtracting the actual elongation of the pull rod from the gap elongation. Therefore, the gap value of the frame of the large extruder can be calculated in advance before the large extruder is heated and pre-tightened, and the gap of the frame of the large extruder is eliminated without using large hoisting equipment, so that the accuracy of the extrusion size of the large extruder in working is improved. The invention also provides a ground support which is used in the large-scale extruder frame gap detection method.
Description
Technical Field
The invention belongs to the technical field of metal processing, and particularly relates to a large-scale extruder frame gap detection method and a ground support.
Background
Before the extruder frame is heated and pre-tightened, in order to ensure the accuracy of the pre-tightening amount of the extruder frame, the gap value of the pre-tightening front frame of the extruder must be considered, in order to ensure the accuracy of the pre-tightening amount of the large extruder frame, the gap of the pre-tightening front frame of the extruder must be eliminated generally, in actual installation, an overhead travelling crane is usually used for driving a nut to rotate and tighten, and because the overhead travelling crane in a production workshop has limited hoisting tonnage, the gap of the large extruder frame cannot be completely eliminated, so that the error of the pre-tightening amount of the large extruder is larger, and the accuracy of the extrusion size of the large extruder in working is greatly influenced.
Disclosure of Invention
In view of the above, it is an object of the present invention to overcome or at least partially solve or alleviate the above problems, and to provide a method for detecting a gap in a frame of a large extruder and a floor stand.
The invention provides a large-scale extruder frame clearance detection method, which comprises the following steps:
Step 001: a first dial indicator and a second dial indicator are respectively arranged in front of and behind the large-sized extruder, so that a measuring head of the first dial indicator contacts with the front end face of a pull rod of the large-sized extruder, and a measuring head of the second dial indicator contacts with the rear end face of the pull rod of the large-sized extruder;
Step 002: a third dial indicator and a fourth dial indicator are respectively arranged on a pressing sleeve of the large-sized extruder, so that a measuring head of the third dial indicator contacts with the inner end face of a front beam of the large-sized extruder, and a measuring head of the fourth dial indicator contacts with the inner end face of a rear beam of the large-sized extruder;
Step 003: pressing the large-scale extruder to a preset working pressure, and recording the change values of the first dial indicator, the second dial indicator, the third dial indicator and the fourth dial indicator;
step 004: using the absolute value of the difference between the change value of the first dial indicator and the change value of the second dial indicator as the actual elongation of the pull rod; taking the absolute value of the difference between the change value of the third dial indicator and the change value of the fourth dial indicator as the elongation of the belt gap of the pull rod;
Step 005: and obtaining the absolute value of the difference between the elongation of the gap of the pull rod and the actual elongation of the pull rod, and obtaining the frame gap value of the large extruder.
In step 001, the number of the first dial indicators and the number of the second dial indicators are equal to that of the pull rods, the measuring heads of each first dial indicator are respectively contacted with the front end face of one pull rod, and the measuring heads of each second dial indicator are respectively contacted with the rear end face of one pull rod.
In step 002, the number of the third dial indicators and the number of the fourth dial indicators are equal to the number of the pull rods, the measuring head of each third dial indicator contacts the inner end face of the front beam through which one pull rod passes, and the measuring head of each fourth dial indicator contacts the inner end face of the rear beam through which one pull rod passes.
In step 002, each third dial indicator and each fourth dial indicator are respectively fixed on a magnetic base, and the magnetic base is adsorbed on a pressing sleeve of the large-sized extruder.
In step 003, the values of the first, second, and third percentages are averaged, respectively.
In step 004, the actual elongation of the tie rod is the average actual elongation of the four tie rods, and the elongation of the tie rod at the belt gap is the average elongation of the four tie rods at the belt gap.
The invention also provides a ground support for detecting the elongation of a pull rod of a large extruder, comprising: two montants, two be connected with the horizontal pole between the montant, every be connected with a down tube on the montant respectively, every be equipped with two fixing bases on the montant respectively, every be provided with the dead lever on the fixing base respectively, be provided with the fixation clamp on the dead lever.
Preferably, a connecting rod is arranged between the vertical rod and the diagonal rod.
Preferably, the fixing seat is slidably sleeved on the vertical rod, a screw hole is formed in the fixing seat, and a positioning screw is arranged in the screw hole.
Preferably, the cross rod is divided into two sections, and a threaded sleeve is connected to the two sections of cross rod support.
The beneficial effects of the invention are as follows:
According to the method for detecting the gap of the large extruder frame, the actual elongation of the pull rod during the pressing is obtained by measuring the elongation change of the front end and the rear end of the pull rod during the pressing of the large extruder, the gap elongation of the pull rod relative to the large extruder is obtained by measuring the displacement change of the front end and the rear end of the press sleeve of the large extruder relative to the front beam and the rear beam respectively during the pressing, and finally the gap value of the large extruder frame is obtained by subtracting the actual elongation of the pull rod from the gap elongation. Therefore, the gap value of the frame of the large extruder can be calculated in advance before the large extruder is heated and pre-tightened, and the gap of the frame of the large extruder is eliminated without using large hoisting equipment, so that the accuracy of the extrusion size of the large extruder in working is improved.
The ground support can flexibly adjust the measuring position of each dial indicator, is specially used for implementing the large-scale extruder frame gap detection method, and has the advantages of simple structure and convenient use.
Drawings
FIG. 1 is a schematic measurement of a large extruder frame gap detection method of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a side elevational view of the floor bracket of FIGS. 1 and 2;
Fig. 4 is a top view of fig. 3.
In fig. 1 to 4: 1. a large extruder; 2. a ground support; 201. a vertical rod; 202. a diagonal rod; 203. a connecting rod; 204. a cross bar; 205. a fixing seat; 206. a set screw; 207. a fixed rod; 208. a fixing clamp; 209. a threaded sleeve; 3. a first dial gauge; 4. a pull rod; 5. a front beam; 6. a rear beam; 7. a second dial gauge; 8. a third dial gauge; 9. a fourth dial gauge; 10. pressing the sleeve; 11. a dial indicator body.
The invention will be described in further detail with reference to the accompanying drawings and examples;
Detailed Description
Example 1
Referring to fig. 1 and 2, the invention provides a method for detecting a frame gap of a large-sized extruder, which comprises the following steps:
Step 001: two ground brackets 2 are respectively arranged in front of and behind the large-sized extruder 1, a first dial indicator 3 is fixed on the ground bracket 2 positioned in front of the large-sized extruder 1, a measuring head of the first dial indicator 3 is contacted with the front end face of a pull rod 4 of the large-sized extruder 1, a second dial indicator 7 is fixed on the ground bracket 2 positioned behind the large-sized extruder 1, and a measuring head of the second dial indicator 7 is contacted with the rear end face of the pull rod 4 of the large-sized extruder 1;
step 002: a third dial indicator 8 and a fourth dial indicator 9 are respectively arranged on a pressing sleeve 10 of the large-scale extruder 1, so that a measuring head of the third dial indicator 8 contacts with the inner end surface of a front beam 5 of the large-scale extruder 1, and a measuring head of the fourth dial indicator 9 contacts with the inner end surface of a rear beam 6 of the large-scale extruder 1;
Step 003: pressing the large-scale extruder 1 to a preset working pressure, and recording the change values of the first dial indicator 3, the second dial indicator 7, the third dial indicator 8 and the fourth dial indicator 9;
step 004: the absolute value of the difference between the change value of the first dial gauge 3 and the change value of the second dial gauge 7 is used as the actual elongation of the pull rod 4; the absolute value of the difference between the change value of the third dial indicator 8 and the change value of the fourth dial indicator 9 is used as the elongation of the belt gap of the pull rod 4;
Step 005: the absolute value of the difference between the elongation of the tie rod 4 with the gap and the actual elongation of the tie rod 4 is obtained to obtain the frame gap value of the large extruder 1.
Example 2
Based on example 1, in step 001, the large extruder 1 used has four tie rods 4, four first dial indicators 3 are fixed on the ground support 2 located in front of the large extruder 1, the measuring heads of the four first dial indicators 3 are respectively contacted with the front end faces of the four tie rods 4 of the large extruder 1, then, zero setting is performed on each first dial indicator 3, four second dial indicators 7 are fixed on the ground support 2 located behind the large extruder 1, the measuring heads of the four second dial indicators 7 are contacted with the rear end faces of the four tie rods 4 of the large extruder 1, and then, zero setting is performed on each dial indicator.
Example 3
Based on embodiment 1 or embodiment 2, in step 002, each pull rod 4 of the large-scale extruder 1 is provided with a pressing sleeve 10, four pressing sleeves 10 of the large-scale extruder 1 are respectively provided with four third dial indicators 8 and four fourth dial indicators 9, namely, the four third dial indicators 8 and the four fourth dial indicators 9 are respectively fixed on a magnetic frame, then the magnetic frame is adsorbed and fixed on the pressing sleeve 10 of the large-scale extruder 1, so that the measuring heads of the four third dial indicators 8 respectively contact the inner end surface of the front beam 5 of the large-scale extruder 1, then each third dial indicator 8 is zeroed, so that the measuring heads of the four fourth dial indicators 9 respectively contact the inner end surface of the rear beam 6 of the large-scale extruder 1, and then each fourth dial indicator 9 is zeroed.
Example 4
Based on example 1, example 2 or example 3, in step 003, the rated operating pressure of the large extruder 1 is 800 tons, the large extruder 1 is pressed to a predetermined 600 tons operating pressure, and the four first dial indicators 3 are recorded to have digital change values of 0.053mm, 0.052mm, 0.054mm and 0.053mm, respectively, and the average value is 0.053mm; the numerical variation values of the four second dial indicators 7 are 0.036mm, 0.033mm, 0.034mm and 0.032mm, and the average value is about 0.034mm; the four third dial indicators 8 have digital values of 0.087mm, 0.092mm, 0.084mm and 0.096, with an average value of about 0.09mm; the four fourth dial indicators 9 have numerical variation values of 0.034mm, 0.031mm, 0.039mm and 0.042mm, with an average value of about 0.037mm.
Example 5
On the basis of example 4, in step 004, the average value of the four second dial indicators 7 is subtracted from the average value of the four first dial indicators 3, so that the actual elongation of the tie rod 4 is 0.019mm; subtracting the average value of the four fourth dial indicators 9 from the average value of the four third dial indicators 8 to obtain the elongation of the pull rod 4 with the gap of 0.053mm; in step 005, the actual elongation of the tie rod 4, that is, 0.053mm minus 0.019mm is subtracted from the elongation of the tie rod 4 with a gap, resulting in a frame gap value of 0.34mm for the tie rod 4.
Example 6
On the basis of the embodiment 1, referring to fig. 3 and 4, the present invention proposes a ground support, which is the ground support 2 mentioned in the embodiment 1, for detecting the elongation of the tie rod 4 of the large extruder 1, the ground support 2 comprising: the two vertical rods 201 are connected with a cross rod 204 between the two vertical rods 201, each vertical rod 201 is connected with an inclined rod 202, each vertical rod 201 is provided with two fixing seats 205, each fixing seat 205 is provided with a fixing rod 207, and each fixing rod 207 is provided with a fixing clamp 208.
The horizontal rods 204 are connected between the two vertical rods 201 to form a left supporting structure and a right supporting structure, the inclined rods 202 are connected to each vertical rod 201 to form a front supporting structure and a rear supporting structure, the two vertical rods 201 can be opposite to the left and right groups of pull rods 4 of the large-scale extruder 1, two fixing seats 205 are fixed to each vertical rod 201, through moving the positions of the two vertical rods 201, each fixing seat 205 can be opposite to the end part of one pull rod 4 respectively, fixing rods 207 are connected to each fixing seat 205, one dial indicator body 1 is fixed to the fixing rods 207 through fixing clamps 208, and the four dial indicator bodies 1 can measure the elongation of the end parts of the four pull rods 4 of the large-scale extruder 1.
Example 7
Referring to fig. 3 and 4, on the basis of embodiment 6, a link 203 is provided between a vertical rod 201 and a diagonal rod 202.
The connecting rod 203 is connected between the vertical rod 201 and the inclined rod 202, so that a tripod is formed, and the stability of the vertical rod 201 and the inclined rod 202 is improved.
Example 8
Referring to fig. 3, on the basis of embodiment 6, a fixing base 205 is slidably sleeved on a vertical rod 201, a screw hole is formed in the fixing base 205, and a set screw 206 is assembled in the screw hole.
The fixing seat 205 can slide along the vertical rod 201, and the fixing seat 205 can be fixed on the vertical rod 201 by pushing the fixing seat 205 on the vertical rod 201 after passing through the screw hole on the fixing seat 205 by using the positioning screw 206, so that the dial indicators on the fixing seat 205 can measure the elongation of the pull rods 4 with different heights.
Example 9
Referring to fig. 4, in the embodiment 6, the cross bar 204 is divided into two sections, and the threaded sleeve 209 is connected to the bracket of the cross bar 204.
The two sections of cross rods 204 are respectively connected with one vertical rod 201 and are perpendicular to the vertical rods, the two sections of cross rods 204 are connected through one threaded sleeve 209, threads with opposite rotation directions are arranged on the two sections of cross rods 204, the rotation directions of internal threads of two ports of the threaded sleeve 209 are also opposite, the distance between the two sections of cross rods 204 can be adjusted only by twisting the threaded sleeve 209, and then the distance between the two vertical rods 201 is adjusted, so that the two sections of cross rods 204 are suitable for large extruders with different widths.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The components and structures not specifically described in this embodiment are well known in the art and are not described in detail herein.
Claims (6)
1. The method for detecting the frame clearance of the large-sized extruder is characterized by comprising the following steps of:
Step 001: two ground brackets are respectively arranged in front of and behind the large-sized extruder, a first dial indicator is fixed on the ground bracket positioned in front of the large-sized extruder, a measuring head of the first dial indicator is contacted with the front end face of a pull rod of the large-sized extruder, a second dial indicator is fixed on the ground bracket positioned behind the large-sized extruder, and a measuring head of the second dial indicator is contacted with the rear end face of the pull rod of the large-sized extruder;
Step 002: a third dial indicator and a fourth dial indicator are respectively arranged on a pressing sleeve of the large-sized extruder, so that a measuring head of the third dial indicator contacts with the inner end face of a front beam of the large-sized extruder, and a measuring head of the fourth dial indicator contacts with the inner end face of a rear beam of the large-sized extruder;
Step 003: pressing the large-scale extruder to a preset working pressure, and recording the change values of the first dial indicator, the second dial indicator, the third dial indicator and the fourth dial indicator;
step 004: using the absolute value of the difference between the change value of the first dial indicator and the change value of the second dial indicator as the actual elongation of the pull rod; taking the absolute value of the difference between the change value of the third dial indicator and the change value of the fourth dial indicator as the elongation of the belt gap of the pull rod;
step 005: the absolute value of the difference between the elongation of the gap of the pull rod and the actual elongation of the pull rod is obtained, and then the gap value of the large extruder frame is obtained;
The ground support is used for detecting the elongation of a pull rod (4) of a large extruder (1), and comprises: the novel vertical rod comprises two vertical rods (201), wherein a cross rod (204) is connected between the two vertical rods (201), an inclined rod (202) is connected to each vertical rod (201) respectively, two fixing seats (205) are respectively assembled on each vertical rod (201), fixing rods (207) are respectively arranged on each fixing seat (205), and fixing clamps (208) are arranged on the fixing rods (207); a connecting rod (203) is arranged between the vertical rod (201) and the inclined rod (202); the fixing seat (205) is sleeved on the vertical rod (201) in a sliding manner, a screw hole is formed in the fixing seat (205), and a positioning screw (206) is assembled in the screw hole; the cross rod (204) is divided into two sections, and a threaded sleeve (209) is connected to the bracket of the two sections of cross rod (204).
2. The method according to claim 1, wherein in step 001, the number of the first dial indicators and the second dial indicators is equal to the number of the tie rods, the measuring head of each first dial indicator contacts the front end face of one tie rod, and the measuring head of each second dial indicator contacts the rear end face of one tie rod.
3. The method according to claim 1, wherein in step 002, the number of the third dial indicators and the fourth dial indicators is equal to the number of the tie rods, the measuring head of each third dial indicator contacts the inner end face of the front beam through which one tie rod passes, and the measuring head of each fourth dial indicator contacts the inner end face of the rear beam through which one tie rod passes.
4. The method according to claim 1, wherein in step 002, each third dial indicator and each fourth dial indicator are respectively fixed on a magnetic base, and the magnetic base is attached to a press jacket of the large-sized extruder.
5. The method according to claim 1, wherein in step 003, the values of the first dial indicator, the second dial indicator, and the third dial indicator are averaged.
6. The method of claim 1, wherein in step 004, the actual elongation of the tie rod is an average actual elongation of the four tie rods, and the band gap elongation of the tie rod is an average band gap elongation of the four tie rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499311.XA CN110186346B (en) | 2019-06-11 | 2019-06-11 | Large extruder frame gap detection method and ground support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499311.XA CN110186346B (en) | 2019-06-11 | 2019-06-11 | Large extruder frame gap detection method and ground support |
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| CN110186346A CN110186346A (en) | 2019-08-30 |
| CN110186346B true CN110186346B (en) | 2024-05-14 |
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Families Citing this family (1)
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| CN111351457B (en) * | 2020-02-21 | 2022-01-25 | 国家电网有限公司 | Method and device for measuring residual elongation of top cover bolt of pumped storage unit |
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