WO1993018368A1 - Jauge de voie - Google Patents

Jauge de voie Download PDF

Info

Publication number
WO1993018368A1
WO1993018368A1 PCT/US1992/007006 US9207006W WO9318368A1 WO 1993018368 A1 WO1993018368 A1 WO 1993018368A1 US 9207006 W US9207006 W US 9207006W WO 9318368 A1 WO9318368 A1 WO 9318368A1
Authority
WO
WIPO (PCT)
Prior art keywords
gauge
tooth
saw
sides
clamping
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.)
Ceased
Application number
PCT/US1992/007006
Other languages
English (en)
Inventor
James T. Turner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
California Cedar Products Co Inc
Original Assignee
California Cedar Products Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by California Cedar Products Co Inc filed Critical California Cedar Products Co Inc
Priority to AU25431/92A priority Critical patent/AU2543192A/en
Publication of WO1993018368A1 publication Critical patent/WO1993018368A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
    • B23Q17/0919—Arrangements for measuring or adjusting cutting-tool geometry in presetting devices
    • B23Q17/0942—Cutting angles of saws
    • 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
    • G01B3/38—Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable
    • 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

Definitions

  • the present invention relates to gauges for measuring the set between a saw plate and a tooth on a saw blade.
  • saw blades typically have many teeth spaced about the perimeter of a flat saw plate.
  • the spacing, or pitch, between the teeth varies in different saw blade types to accommodate various applications such as ripping, crosscutting, scoring, trimming, or mitering.
  • the finer the tooth pitch the closer the spacing of the teeth will be; the coarser the pitch, the wider the spacing of the teeth will be.
  • the appropriate tooth pitch necessary to achieve desired results often depends upon the species of wood used and the purpose to which the cut wood will be applied. For instance, a cabinet shop might use a saw blade having a fine tooth pitch for cutting a glue joint. On the other hand, a coarse pitch saw blade might be used by a saw mill to rough cut green lumber. Moreover, the cabinet shop might use eight to sixteen inch saw blades, while the saw mill might use a circular saw having a six foot diameter or a 24 foot long band saw.
  • the set is the distance from the surface of the saw plate to the widest point on a tooth. This distance can be visualized as being the clearance between the saw plate and the wood during cutting.
  • the set is commonly measured using a mechanical gauge which is seated onto one side of the saw plate below the tooth to be measured. The set is measured from this reference seat position to the outermost point of the tooth.
  • measurements of the set which use the surface of the saw plate as a reference may be inaccurate. For example, the saw plate may be bent during use.
  • the reference surface may not be flat thereby causing an inaccurate measurement.
  • the plate may be straightened by hammering, there may be substantial deviations in the thickness of the saw plate as a result of the hammering or bending of the blade. This variance in the thickness of the saw plate can likewise affect the measurement of the set.
  • the pressure necessary to seat a conventional set gauge onto the side of the saw plate may cause the plate to bend, thus leading to inaccurate set measurements. This problem may also result when measuring the set on saw blades having tapered or stepped surfaces.
  • the gauge which, in accordance with one embodiment of the present invention, clamps to the saw blade and measures the set of a tooth on the blade on both sides of the tooth simultaneously.
  • the gauge includes a clamp having spring-loaded anvil faces which clamp on opposite sides of the saw blade plate just behind the tooth to be measured.
  • a pair of measuring devices carried by the clamp have opposing gauge faces which engage opposite sides of the tooth to be measured.
  • Each measuring device measures the displacement of its gauge face relative to the associated clamping anvil face.
  • Figure 1 is a side view of a gauge in accordance with a proposed embodiment of the present invention, shown in use with a saw blade.
  • Figures 2a and 2b show enlarged partial top and side views of saw teeth disposed about a saw plate of the saw blade of Figure 1.
  • Figure 3 is a front view of the gauge of Figure 1 shown in an open position.
  • Figure 4 is a top view of the gauge of Figure 1 shown in a closed position.
  • Figure 5 is a rear view of-the gauge of Figure 2.
  • Figure 6 is a partial cross-sectional view illustrating the clamping of the gauge about the saw blade to measure the set of a tooth of the blade, as viewed along the lines 6-6 of Figure 1.
  • a set gauge in accordance with a preferred embodiment of the present invention is indicated generally at 10 in Figure 1.
  • the set gauge 10 is shown clamped on a saw blade 30 for the purpose of measuring the set of a tooth 12.
  • the gauge 10 of the present invention measures the set simultaneously on both sides of-the tooth 12.
  • Figures 2a and 2b are enlarged views (top and side, respectively) of the saw teeth 12 disposed about the perimeter of a saw plate 18 of the saw blade 30.
  • the "set" is defined as the distance from one side of the saw plate 18 to the outermost edge 20 of one side of the tooth 12.
  • the set gauge 10 clamps the saw plate 18 at a rectangular area 16 ( Figure 2b) behind the tooth to be measured.
  • the reference area 16 on both sides of the plate 18 serves as reference points for the set measurement.
  • the set gauge 10 is supported on the saw blade 30 by the saw plate 18.
  • the set 22 on each side of the tooth equals the distance from the reference point in the clamping area 16 relative to the outside edge 20 of the tooth 12.
  • FIG. 3 illustrates the set gauge 10 in an open position.
  • Figures 4 and 5 are top and rear views of the gauge in a closed position.
  • the gauge 10 includes two gauge body halves 32a and 32b, each of which carries a dial gauge 54a, 54b for displaying the set measurements.
  • the two body halves 32a and 32b have inside clamping anvil faces 36a and 36b which move away from and toward each other as two handles 50a and 50b, coupled to the body halves 32a and 32b, are squeezed together and released.
  • the clamping anvil faces 36a and 36b clamp onto the plate reference area 16 behind the tooth 12 to be measured as shown in Figure 6.
  • the dial gauge 54a has a barrel 58a which is clamped in the body half 32a.
  • a gauge anvil 34a is coupled by a shaft passing through the barrel 58a to the dial gauge 54a. Displacements of the gauge anvil 34a are indicated by the dial gauge 54a.
  • the dial gauge 54b similarly is coupled to a gauge anvil 34b by a barrel 58b.
  • Clamping anvil faces 36a ' and 36b are located on the lower rear sections of the corresponding body halves 32a and 32b. As shown in Figure 6, the clamping anvil faces 36a and 36b clamp onto both sides of the area 16 on the saw plate 18 behind the tooth 12 to supportively brace the set gauge 10 on the saw blade 30. Because the clamping anvil faces 36a and 36b apply equal forces to the plate 18, the plate 18 is not bent one way or the other by the gauge 10.
  • the displacement of both of the gauge anvils 34a and 34b can be accurately and simultaneously measured by the dial gauges 54a and 54b, while reducing or eliminating error that occurs as a result of plate bending when only one side of a tooth is measured at a time by many conventional devices.
  • the handle 50a is pivotally coupled by a pin 90 ( Figure 5) to gauge body half 32a.
  • the handle 50b is affixed to body half 32b.
  • a connecting linkage 48 is pivotally connected between the handles 50a and 50b by pins 92 and 94.
  • Bolts or the like may be used as the pins 92, 94 to allow a pivoting motion of the handle 50a and the connecting linkage 48, with respect to the body half 32a.
  • the gauge 10 includes two shafts, or guide rods, 40a and 40b, which are attached side-by-side to a retainer block 42 positioned on one side of the set gauge 10.
  • the free ends of the shafts 40a and 40b pass siidably through the upper rear section of the body half 32a and are coupled to the inside face of the opposing body half 32b.
  • Two compression springs 38a and 38b, mounted on the shafts 40a and 40b, are pre-loaded to exert a force sufficient to retain the gauge in the closed position of Figures 4 and 5 when the handles 50a and 50b are released.
  • the springs 38a and 38b are held in place between the retainer block 42 and the external side of the nearest body half 32a such that the spring force moves the body half 32a toward the opposing body half 32b.
  • the size and characteristics of the springs 38a and 38b are limited such that the springs 38a and 38b do not distort when compressed but are sufficiently elastic to allow the handles 50a and 50b to be manually squeezed together.
  • connecting linkage 48 pivots with handle 50a which, in turn, pivots about body half 32a causing body half 32a to move away from the opposing body half 32b.
  • the springs 38a and 38b are compressed.
  • the springs 38a and 38b exert a reaction force opposite to the direction of compression such that when the handles 50a and 50b are released, the clamping anvil faces 36a and 36b will clamp onto the anvil clamping area 16 behind the tooth 12, as shown in Figure 6.
  • the clamping anvil faces 36a and 36b are separated by a small gap or clearance 56 which is machined into the gauge body halves 32a and 32b.
  • a stop shelf 52 formed along the upper aft section of the body half 32b, is intended- to limit the amount by which the saw plate 18 is to be inserted between the two body halves 32a and 32b.
  • the outer edges 20 of the tooth 12 will displace the faces of the gauge anvils 34a and 34b from the associated saw plate reference surface ,16 by a distance equal to the set of the tooth on each side.
  • the displacements of .the gauge anvils 34a and 34b on both sides of the tooth are indicated simultaneously on the dial gauges 54a and 54b, respectively.
  • the dial gauges may directly display the displacements or may provide a set measurement which is a function of the displacement.
  • each body half 32a, 32b is split as indicated at 100 into two spaced jaws 102a and 102b.
  • the barrel 58a of the dial gauge 54a is clamped between the jaws 102a and 102b by a clamping screw 60a which is threaded into the jaw 102b.
  • the barrel 58b of the dial gauge 54b is clamped in a similar fashion in the front of the body half 32b.
  • the dial gauges may be removed from the gauge for cleaning or adjustment by loosening clamping screws 60a and 60b. When the clamping screws are sufficiently loose, the barrels 58a and 58b of the dial gauges 54a and 54b can be separated from the body halves 32a and 32b. Upon remounting, the dial gauges must be properly calibrated.
  • a setting bar having a particular width, preferably 1/8 inch, is inserted between the two gauge anvils 34a and 34b and clamped between the clamping anvil faces 36a and 36b.
  • the setting bar should rest against the stop shelf 52 of the body half 32b.
  • each dial gauge is slid toward the setting bar causing the gauge anvils to engage the setting bar until each dial indicates a displacement of .005 inch.
  • the dial gauges can be pre-loaded so that the pre-set separation between the gauge anvils is only slightly less (.010 inch in the illustrated embodiment) than the separation between the clamping anvil faces when the set gauge is open to fit around a tooth.
  • the distance between the gauge anvils will correspond closely to the distance between the clamping anvil faces 36a and 36b when the handles 50a and 50b are squeezed together, it will not be difficult to insert the saw tooth 12 between the two gauge anvils 34a and 34b while maintaining a sufficient separation for the set gauge 10 to clamp on the sides of the saw plate 18.
  • the clamping screws 60a and 60b can be tightened about the barrels 58a and 58b of the dial gauges 54a and 54b.
  • the shafts of the gauge anvils 34a and 34b should move freely in and out of the barrels 58a and 58b.
  • the thumb screws 62a and 62b shown in Figure 3, should be loosened and the faces of the dial gauges 54a and 54b rotated until they read zero.
  • the thumb screws 62a and 62b can then be retightened. Thereafter, the setting bar may be removed and the set gauge can be used.
  • the present invention provides a unique apparatus and method for measuring the set of a saw tooth.
  • the present invention can easily be used by squeezing the two handles together to fit the gauge over the saw blade and tooth assembly.
  • modifications of the present invention in its various aspects, will be apparent to those skilled in the art, some being apparent only after study and others being matters of routine mechanical design.
  • the shafts, or guide rods, 40a and 40b and the clamping anvil faces 36a and 36b may be configured differently to accommodate for differences in tooth spacing.
  • Shafts 40a and 40b may be mounted on top of each other, rather than next to each other, and the clamping anvil area may be smaller; or the shafts 40a and 40b may be set farther apart and the clamping anvil faces made larger. Such modifications would provide for narrower or wider tooth spacings.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

Jauge de voie (10) servant à mesurer la voie (22) d'une dent de scie (12) simultanément sur les deux côtés d'une lame de scie (18). Dans le mode de réalisation illustré, une jauge comporte deux moitiés de corps (32a, 32b) couplées à des ressorts de compression (38a, 38b) et à des poignées allongées (50a, 50b) lesquelles, lorsqu'elles sont serrées l'une contre l'autre, séparent les moitiés de corps de la jauge (10) d'une distance suffisante pour l'installer sur une lame de scie (18). Lorsque les poignées sont libérées, des faces d'enclume de serrage (36a, 36b) situées sur les moitiés de corps serrent la lame de scie derrière une dent à mesurer. Des enclumes de jauge (34a, 34b) mesurent le déplacement ou la voie des deux côtés de chaque dent. La voie ainsi mesurée est ensuite affichée sur deux indicateurs à cadran (54a, 54b).
PCT/US1992/007006 1992-03-11 1992-08-19 Jauge de voie Ceased WO1993018368A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU25431/92A AU2543192A (en) 1992-03-11 1992-08-19 Set gauge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84919892A 1992-03-11 1992-03-11
US849,198 1992-03-11

Publications (1)

Publication Number Publication Date
WO1993018368A1 true WO1993018368A1 (fr) 1993-09-16

Family

ID=25305287

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/007006 Ceased WO1993018368A1 (fr) 1992-03-11 1992-08-19 Jauge de voie

Country Status (1)

Country Link
WO (1) WO1993018368A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1175401A (en) * 1915-05-25 1916-03-14 James H Barnes Curve-measuring device.
CH243735A (de) * 1944-08-16 1946-07-31 Ag Veterinaria Gerät zum Messen der Hautfaltendicke.
US2831375A (en) * 1954-06-03 1958-04-22 Lautiainen Uuno Set regulator for saw blades
US3305934A (en) * 1963-11-22 1967-02-28 Berthen Ag Measuring device for saw teeth
CH444500A (de) * 1966-09-08 1967-09-30 Oerlikon Maschf Dicken-Messvorrichtung
US3919779A (en) * 1974-09-04 1975-11-18 Pcl Ind Limited Thickness gauge devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1175401A (en) * 1915-05-25 1916-03-14 James H Barnes Curve-measuring device.
CH243735A (de) * 1944-08-16 1946-07-31 Ag Veterinaria Gerät zum Messen der Hautfaltendicke.
US2831375A (en) * 1954-06-03 1958-04-22 Lautiainen Uuno Set regulator for saw blades
US3305934A (en) * 1963-11-22 1967-02-28 Berthen Ag Measuring device for saw teeth
CH444500A (de) * 1966-09-08 1967-09-30 Oerlikon Maschf Dicken-Messvorrichtung
US3919779A (en) * 1974-09-04 1975-11-18 Pcl Ind Limited Thickness gauge devices

Similar Documents

Publication Publication Date Title
US4825559A (en) Pregauging tool for a cutting table
US4256000A (en) Adjustable workstop
US4779354A (en) Variable angle protractor
US4989450A (en) Cable tensiometer
US5040443A (en) Multiple angle measuring gauge
US4441394A (en) Table saw guide apparatus
US5253431A (en) Linear measurement device
US5353515A (en) Precision rip fence alignment gauge
CN115488492A (zh) 一种激光机床机身导轨安装装置及其校直方法
US6644081B1 (en) System and method for adjusting helicopter blade trim tabs
US2833051A (en) Shaft aligning device
WO1993018368A1 (fr) Jauge de voie
US4485558A (en) Fillet weld gauge
CN115575245A (zh) 一种用于偏心受压试验的装配式可调节铰支座
US4112581A (en) Micrometer jig
US6044544A (en) Retaining parallels
US5630282A (en) Gage, system, and method for measuring can blank slitter knives spacing
US5463902A (en) Soft tissue extensometer
US5931369A (en) Methods and apparatus for aligning band saw blade for strip ends
US2837828A (en) Built-up snap gauge
US4385445A (en) Thickness gauge
US4204331A (en) Keyway gauge
US5111676A (en) Tool for selectively bending the trailing edge tab of a helicopter blade while simultaneously measuring the true degree of tab bending
EP1882921A1 (fr) Dispositif pour mesurer la tension d'une lame de scie
US4887474A (en) Clamp tightness tool for stator cores

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CA CH CS DE DK ES FI GB HU JP KP KR LK LU MG MN MW NL NO PL RO RU SD SE

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL SE BF BJ CF CG CI CM GA GN ML MR SN TD TG

122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA