CN110691677B - Cutting tool and method for operating a cutting tool - Google Patents
Cutting tool and method for operating a cutting tool Download PDFInfo
- Publication number
- CN110691677B CN110691677B CN201880031025.4A CN201880031025A CN110691677B CN 110691677 B CN110691677 B CN 110691677B CN 201880031025 A CN201880031025 A CN 201880031025A CN 110691677 B CN110691677 B CN 110691677B
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- CN
- China
- Prior art keywords
- lower blade
- shear
- cutting tool
- cylinder
- shearing
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
- B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/02—Means for moving the cutting member into its operative position for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C13/00—Shearing, clipping or cropping surfaces of textile fabrics; Pile cutting; Trimming seamed edges
- D06C13/04—Shearing lace or embroidery, e.g. cutting loose threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D11/00—Combinations of several similar cutting apparatus
- B26D2011/005—Combinations of several similar cutting apparatus in combination with different kind of cutters, e.g. two serial slitters in combination with a transversal cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
Abstract
Firstly, a method for operating a cutting tool is disclosed, having a shear cylinder rotating about a longitudinal axis (2), a shear screw (13) mounted on the shear cylinder, and a lower blade holder carrying a lower blade extending parallel to the longitudinal axis (2), wherein the condition of the cutting tool is measured, and wherein on each shear screw (13) a shear point is continuously moved from an inlet end (6) to an outlet end (7) of the lower blade, in which shear point (16) cut material guided between the shear screw (13) and the lower blade is sheared tangentially to the shear cylinder. Furthermore, such a cutting tool (1) is disclosed. In order to evaluate the operating state of the cutting tool, it is proposed to measure the state between the lower insert and the lower insert holder.
Description
Technical Field
The invention relates firstly to a method for operating a cutting tool having a shear cylinder rotating about a longitudinal axis, a shear screw mounted on the shear cylinder, and a lower blade holder carrying a lower blade extending parallel to the longitudinal axis, wherein the state of the cutting tool is measured, and wherein a shear point on each shear screw, in which material to be cut guided between the shear screw and the lower blade is sheared tangentially to the shear cylinder, is moved continuously from an inlet end to an outlet end of the lower blade. Furthermore, the invention relates to such a cutting tool.
Background
The method and the cutting tool are used for cutting the surface of flat objects such as textiles, carpets, pelts and pelts, in particular in order to produce a uniform pile height or fiber length. A cutting tool with a helical shear screw provided on a shear cylinder is fitted as a whole into the shear. During operation of the shear, a shear cylinder with a shear screw rotates tangentially to the bottom blade. The shear screw extends above the cutting edge of the lower blade and forms a continuous shear cut along the cutting path on the lower edge. The flat articles are guided by the cutting table of the shearing machine onto the cutting edge in such a way that the fibre fraction exceeding the required pile height is guided between the cutting screw and the bottom blade and is separated.
In the known method, the operating state of the cutting tool is basically judged by the operator on the basis of the characteristic operating noise of the cut sample, the guide rail, which is produced by the cooperation of the shearing cylinder and the lower blade, and the shear. The operator typically makes corrections manually, and in particular, the position of the lower blade relative to the shear cylinder is adjusted by tightening a clamp plate, set screw, or other mechanical adjustment means.
WO 95/31596A 1, US 5,379,497 a and US 3,941,986A propose measuring the height of the cutting gap between the lower blade and the shear cylinder on the cutting tool and adjusting the height according to the measurement result.
As background to the invention, EP 1798011 a1 proposes measuring the pressing force, the distance or the temperature and the change in position acting between the cutting roller and the pressure roller in a rotary cutting machine. EP 1442652B 1 and EP 1080629B 1 propose measuring the vibrations of the lower blade or the current flowing through the cutting gap as a result of sparks on the shredder, determining the height of the cutting gap and, if necessary, readjusting it. EP 0172467 a2 proposes measuring the height of the cutting gap on the harvester by means of a proximity sensor.
Scientific research relates to the temperature of the bottom blade and the sound emission of the cutting machine.
Disclosure of Invention
Purpose(s) to
The object of the invention is to measure the operating state of a cutting tool.
Solution scheme
Proceeding from the known method, it is proposed according to the invention to measure the state between the lower blade and the lower blade holder. Between the lower blade and the lower blade holder, the measuring element is on the one hand very close to the shearing point between the lower blade and the shearing cylinder, i.e. very close to the position of the cutting tool which is most important and sensitive for evaluating the operating state, but on the other hand is separate from all movable components and the planar article and is free from influences during operation of the shear.
Preferably, in the method according to the invention, the measuring comprises vibration measuring. During the shearing operation, the mechanical sliding of the shearing screw on the lower blade generates vibrations that continue to occur in the components of the cutting tool. Such vibrations are the cause of characteristic noise, which is used by the operator in the prior art to evaluate the operating state.
The balance mass of the shear cylinder, the number of spirals, and its cutting characteristics on the shear cylinder can be determined from the vibration pattern. Furthermore, before other damage occurs on the cutting tool, an operation critical state, such as a loose shear screw, can be identified as early as possible from the characteristic vibration pattern.
Further preferably, in such a method according to the invention, the vibration at the inlet end is measured. The end of the bottom blade in the longitudinal direction of the shearing cylinder, at which the shearing screw interacts for the first time with the bottom blade in operation, is referred to as the entry end. By contacting the lower blade, the shear helix is particularly susceptible to breaking at this location.
Preferably, in the method according to the invention, the measuring comprises temperature measuring. During operation of the shear, the lower blade is heated due to friction at the shear point between the lower blade and the shear screw. Temperatures well above 100 ℃ can occur, which can damage the planar article and damage the lower blade. Thus, temperature is an important characteristic of a cutting tool that performs optimally. In particular, excessive temperatures occur on the bottom knifes due to excessively high contact pressures between the bottom knifes and the shearing screw, excessively wide running rails of the shearing screw on the bottom knifes, lack of or lack of lubrication of the contact lines on the bottom knifes, and excessively high cutting speeds on the shearing cylinder.
Further preferably, in such a method according to the invention, the temperature at the outlet end is measured. In this position, there will first be a lack of lubrication.
Preferably, in the method according to the invention, the measuring comprises force measuring. By means of the pressure between the lower blade and the lower blade holder, a static misalignment in the position of the shearing cylinder relative to the lower blade is identified, the deviation of the longitudinal axis of the shearing cylinder horizontally or vertically from a parallel position relative to the cutting path. The measurement of the pressure simplifies the adjustment work during the first operation, maintenance, service and re-operation after maintenance and machine stoppage.
The dynamic measurement of the pressure enables an evaluation of the state of the cutting tool during continuous operation. Combined from temperature change, solid sound
And the measured values in the torque, it is possible to determine accurate data about the cutting behaviour up to the service requirements.
Further preferably, in such a method according to the invention, the inlet end, the outlet end and the force between the inlet end and the outlet end are measured. The combination of these three measurements determines the parallelism of the shear cylinder and the lower blade and the curvature of the cutting path. By measuring the force at another location, the condition of the cutting tool can be described more accurately.
Preferably, in the method according to the invention, the measured state is transmitted to an evaluation device. The transmission to a common evaluation device allows the correlation of the different measured values, the storage of the measured values and thus the analysis of the time progression and the prediction.
Further preferably, in such a method according to the invention, the status is transmitted wirelessly in an analog or digital manner. In particular, wireless transmission to a central server via a wireless mobile communication network allows the use of infrastructure which is widely covered in industrial countries.
Preferably, in the method according to the invention, the evaluation device also evaluates the state and creates instructions to change the geometric position of the shearing cylinder and/or the lower blade. The current measurement data and the operating instructions for the operator obtained therefrom can be compiled for output on the screen of the machine control device. From the measurement data, static and dynamic operating states can be described and visualized.
Further preferably, in such a method according to the invention, the position is changed automatically. The machine control device can use these measurement data to adjust to a defined desired state and keep the operation of the machine within specified limits.
Preferably, in the method according to the invention, the drive torque for rotating the shear cylinder is measured and included in the evaluation. In conventional shears, the shear cylinder is driven by an electric motor. The drive power is controlled or regulated by an inverter, which typically detects, records, and further processes deviations or fluctuations in power demand. These data can be read quickly and simply by means of hardware and software interfaces and, in particular in combination with the aforementioned vibration states, temperatures and pressure measurements between the lower blade and the lower blade carrier, allow rich conclusions about the operating state.
Starting from the known cutting tool, it is proposed according to the invention that a measuring element is arranged between the lower blade and the lower blade holder. The cutting tool according to the invention achieves the implementation of the method according to the invention and is characterized by the same advantages as described above.
Preferably, in the cutting tool according to the present invention, the measuring element is mounted on the lower blade holder. As long as the lower blade holder is made of machine steel, the mounting of the measuring element on the lower blade holder is at a significantly lower cost than on the hardened lower blade.
The method according to the invention and the cutting tool according to the invention simplify the first run and the machine restart after the execution of maintenance, servicing, repair and service measures, enable static and dynamic condition monitoring and optimization of cutting parameters and cutting performance, and enable static and dynamic damage prevention and collision or accident monitoring.
Drawings
The invention is illustrated below with reference to examples. The figures show:
FIG. 1 shows a cutting tool of the present invention, and
fig. 2 is a detailed view of the cutting tool.
Detailed Description
The cutting tool 1 according to the invention shown in fig. 1 has a longitudinal axis 2, a shear cylinder 3, a lower blade holder 4 with a lower blade 5. The shearing cylinder 3 is mounted on the inlet end 6 and the outlet end 7 in a bearing block, not shown, so as to be rotatable about the longitudinal axis 2 by means of oscillating bearings 8.
The lower blade holder 4 has twelve boreholes 9 into which pressure sensors 10 are respectively inserted. The pressure sensors 10 bear against the lower blade 5 and measure the pressure acting between the lower blade 5 and the lower blade holder 4, respectively.
The lower blade 5 has an acceleration sensor 11 at the inlet end 6 and a temperature sensor 12 at the outlet end 7. The acceleration sensor 11 measures the vibration of the cutting tool 1, and the temperature sensor 12 measures the temperature of the cutting tool 1.
Twenty-four helical shear screws 13 are fixed on the shear cylinder 3 on the inlet end 6 and the outlet end 7, respectively, by means of tension screws (Plette)14, which are fixed by means of side plates 15.
In operation of the cutting tool 1, the shearing cylinder 3 together with the shearing screw 13 is rotated about the longitudinal axis 2 in such a way that the shearing point 16, in which the shearing screw 13 contacts the lower blade 5, is continuously moved from the inlet end 6 to the outlet end 7.
On the basis of the values measured by the pressure sensor 10, the acceleration sensor 11 and the temperature sensor 12, and on the basis of the drive torque and the rotational speed of the shearing cylinder 3, the state of the cutting tool 1 in static and dynamic operation is obtained and stored in a machine control device, from which it is transmitted to a server via a wireless mobile communication network and interpreted there by means of an expert system. The machine control device, the wireless mobile communication network and the server are not shown.
Based on the interpretation of the state values, the expert system finds adjustment parameters for optimizing the cutting power and the overall state of the cutting tool 1 and transmits them back to the machine control. The machine control automatically changes the rotational speed of the shearing cylinder 3, the geometric position of the shearing cylinder 3 and/or the lower blade 5 depending on the adjustment parameters.
List of reference numerals:
1 cutting tool
2 longitudinal axis
3 shearing cylinder
4 lower blade holder
5 lower blade
6 inlet end
7 outlet end
8 oscillating bearing
9 drilling
10 pressure sensor
11 acceleration sensor
12 temperature sensor
13 shear screw
14 stretching screw
15 side plate
16 shear point
Claims (16)
1. A method for operating a cutting tool (1) having a shear cylinder (3) rotating about a longitudinal axis (2), a shear screw (13) mounted on the shear cylinder (3), and a lower blade holder (4), the lower blade carrier carrying a lower blade (5) extending parallel to the longitudinal axis (2), wherein the state of the cutting tool (1) is measured and wherein the shearing point (16) on each shearing helix (13) is continuously moved from the inlet end (6) to the outlet end (7) of the lower blade (5), in the shearing point, the material to be cut guided between the shearing screw (13) and the lower blade (5) is sheared off tangentially to the shearing cylinder (3), characterized in that the state between the lower blade (5) and the lower blade holder (4) is measured.
2. The method of claim 1, wherein the measurement comprises a vibration measurement.
3. A method according to claim 2, characterized by measuring the vibration at the inlet end (6).
4. A method according to claim 2, characterized in that an acceleration sensor (11) measures the vibrations.
5. The method of any of claims 1-4, wherein the measurement comprises a temperature measurement.
6. A method according to claim 5, characterized by measuring the temperature at the outlet end (7).
7. The method of any of claims 1-4, wherein the measurement comprises a force measurement.
8. Method according to claim 7, characterized in that the inlet end (6), the outlet end (7) and the force between the inlet end (6) and the outlet end (7) are measured.
9. Method according to any of claims 1-4, characterized in that the measured state is transmitted to an evaluation device.
10. The method of claim 9, wherein the status is wirelessly transmitted.
11. The method according to claim 9, characterized in that the evaluation device evaluates the state and creates instructions to change the geometrical position of the shearing cylinder (3) and/or the lower blade and/or to change the rotational speed of the shearing cylinder (3).
12. The method of claim 11, wherein the position is changed automatically.
13. The method according to claim 11, characterized in that the evaluation of the state is based on a combination of dynamic measurements of pressure, values measured from temperature changes, solid sound and torque.
14. Method according to any of claims 1-4, characterized in that the drive torque for rotating the shear cylinder (3) is measured and included in the evaluation.
15. A cutting tool (1) having a carrier, a shear cylinder (3) rotatable on the carrier about a longitudinal axis (2), a shear screw (13) mounted on the shear cylinder (3), and a lower blade holder (4) carrying a lower blade (5) extending parallel to the longitudinal axis (2) and having measuring elements for measuring the condition of the cutting tool (1), wherein during rotation of the shear cylinder (3) a shear point (16) on each shear screw (13) is continuously moved from an inlet end (6) of the lower blade (5) to an outlet end (7) of the lower blade (5) in which material to be cut guided between the shear screw (13) and the lower blade (5) is sheared tangentially to the shear cylinder (3), characterized in that the measuring element is arranged between the lower blade (5) and the lower blade holder (4).
16. The cutting tool (1) according to claim 15, wherein the measuring element is mounted on the lower blade holder (4).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017110225.6A DE102017110225A1 (en) | 2017-05-11 | 2017-05-11 | Cutting tool and method of operating the same |
| DE102017110225.6 | 2017-05-11 | ||
| PCT/EP2018/061059 WO2018206340A1 (en) | 2017-05-11 | 2018-04-30 | Cutting tool and method for operating the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110691677A CN110691677A (en) | 2020-01-14 |
| CN110691677B true CN110691677B (en) | 2022-06-14 |
Family
ID=62091899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880031025.4A Active CN110691677B (en) | 2017-05-11 | 2018-04-30 | Cutting tool and method for operating a cutting tool |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3595852B1 (en) |
| CN (1) | CN110691677B (en) |
| DE (1) | DE102017110225A1 (en) |
| ES (1) | ES2890705T3 (en) |
| TW (1) | TWI796332B (en) |
| WO (1) | WO2018206340A1 (en) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US34946A (en) | 1862-04-15 | Improvement in wood-saw frames | ||
| IT989056B (en) * | 1973-06-12 | 1975-05-20 | Nuovo Pignone Spa | ELECTRONIC DEVICE FOR THE AUTOMATIC AND CONTINUOUS ADJUSTMENT OF THE HEIGHT OF THE CLIMBING HAIR ON PRODUCTS IN GENERAL WITH DIVERSIFIED THICKNESS ALSO AS SEAMS |
| DE2402515B1 (en) * | 1974-01-19 | 1975-11-13 | Leo Sistig Kg, 4150 Krefeld | Shearing machine with one or more cutting units for the continuous shearing of carpets or other pile fabrics |
| DE2404837C3 (en) * | 1974-02-01 | 1978-04-20 | Fa. Severin Heusch, 5100 Aachen | Shear spiral for a revolving shear cylinder |
| US4412212A (en) * | 1981-08-10 | 1983-10-25 | Deere & Company | Shearbar clearance detector |
| USRE34946E (en) * | 1987-05-05 | 1995-05-23 | New Holland North America, Inc. | Method and apparatus for adjusting a shear bar relative to a cutter head |
| US5379497A (en) * | 1993-08-18 | 1995-01-10 | Guilford Mills, Inc. | Apparatus for inspecting settings on a textile fabric shearing machine |
| US5483729A (en) * | 1994-05-18 | 1996-01-16 | Ghm Industries, Inc. | Shearing machine having multiple close adjustment devices |
| JP2002515951A (en) * | 1997-02-28 | 2002-05-28 | ショー インダストリーズ インコーポレイテッド | Carpet, carpet backing materials and methods |
| DE19903153C1 (en) * | 1999-01-27 | 2000-03-16 | Case Harvesting Sys Gmbh | Method of determining the sharpness of agricultural chopping blades involves comparing reference load quotient on counter blade with varying quotient measured during operation |
| DE19942399C1 (en) * | 1999-09-06 | 2001-01-25 | Case Harvesting Sys Gmbh | Cutting gap setting device for chopping device for agricultural crop detects electrical spark discharge across gap between chopping blades and cooperating counter-blade for halting setting movement |
| DE10303504A1 (en) * | 2003-01-30 | 2004-09-02 | Deere & Company, Moline | Device for measuring and / or checking the distance between a shear bar and a chopping knife |
| DE102005060578A1 (en) * | 2005-12-17 | 2007-06-21 | Bikoma Ag Spezialmaschinen | Apparatus for rotary cutting |
| DE102008045470A1 (en) * | 2008-09-03 | 2010-03-04 | Wirtgen Gmbh | Method for determining the state of wear |
| JP5502505B2 (en) * | 2010-01-26 | 2014-05-28 | 旭マシナリー株式会社 | Cross cutter device |
| DE102013201328B4 (en) * | 2013-01-28 | 2015-06-11 | Deckel Maho Pfronten Gmbh | Machining unit for a program-controlled machine tool |
| CN105500905A (en) * | 2015-12-31 | 2016-04-20 | 苏州恩欧西精密机械制造有限公司 | Squeegee of printing machine |
| CN205928817U (en) * | 2016-08-24 | 2017-02-08 | 上海骄成机电设备有限公司 | High -speed rotary cutting device |
-
2017
- 2017-05-11 DE DE102017110225.6A patent/DE102017110225A1/en not_active Ceased
-
2018
- 2018-04-30 EP EP18721375.6A patent/EP3595852B1/en active Active
- 2018-04-30 WO PCT/EP2018/061059 patent/WO2018206340A1/en unknown
- 2018-04-30 ES ES18721375T patent/ES2890705T3/en active Active
- 2018-04-30 CN CN201880031025.4A patent/CN110691677B/en active Active
- 2018-05-04 TW TW107115142A patent/TWI796332B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018206340A1 (en) | 2018-11-15 |
| EP3595852B1 (en) | 2021-08-25 |
| TW201900980A (en) | 2019-01-01 |
| TWI796332B (en) | 2023-03-21 |
| EP3595852A1 (en) | 2020-01-22 |
| CN110691677A (en) | 2020-01-14 |
| ES2890705T3 (en) | 2022-01-21 |
| DE102017110225A1 (en) | 2018-11-15 |
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