JPS5960301A - Cylinder gage head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

FIELD OF THE INVENTION This invention relates generally to measurement instruments, and more particularly to a new and improved head 1llIi solid for use in 7 cylinder cages of mechanical or electronic structures. Cylinderage is an instrument designed to measure the diameter of the cylindrical pre-holes of the ridges. Mechanical engineers often need the confidence to accurately measure the diameter of a hole that is being formed in a workpiece, for example. The effective measuring range of the H1 instrument can be increased by providing a stem that can extend in the opposite direction to the sensing contact member of the gauge. ) fJ: The stem is thread-shaped and the head of the cylinder bush is approximately equal to the diameter of the hole to be measured.
l (the cylinder r-, which was to be extended or retracted by the rotation of the screw, according to a constant ratio zang) inserted into the reference ring selected as follows: Once inserted into the reference ring, insert the needle into the desired hole in the instrument σ piece and
U'J is read by a dialage V mechanically connected to the measuring head. This instrument is for example US>y, 1r-6,418
, No. 720, 6,442.02 No. fJ, 3,422.
540, 4, U 30,202 and 4,170.
No. 851, such instruments are somewhat difficult to use and maintain. For example, the initial setting of an extendable IJF stem is time consuming and requires several adjustments before the stem can be properly extended and locked by turning the locking nut, which can sometimes cause the stem to Begins to move accidentally. Additionally, the contacts used when moving the meter along the diameter of the hole and when making measurements also tend to wear quickly. It has been recognized that other UF moving parts are also prone to wear, which reduces the accuracy of the instrument over time. Another drawback of this type of conventional cylinder 9-gear is that it is often used in machining areas where coolant and the like are present, so that the instrument parts often become clogged with debris. . A general object of the invention is therefore to improve cylinder dage. Another purpose of this book is to measure cylinder dage to operate a mechanical instrument such as a dial dage or an electrical instrument such as a linear variable differential transformer (LVDT) connected to an electronic digital display. It is to provide the head. Still another object of the present invention is to provide a head for a 9-gear syringe, which can be quickly and easily set into a reference ring before being used to measure holes. That's true. The objective of the present invention is to provide a cylinder head that is easy to clean, has a long service life, requires little maintenance, and is highly reliable and can be used repeatedly.
An object of the present invention is to provide a head capable of performing efficient and accurate measurements. In accordance with the present invention, a head for use in a cylinder gauge is provided, comprising an elongated nodule and a Q-saw offset U-shaped centering arm pivotally connected to the said nodule and carrying a pair of floating spherical contact members, σ) When performing the centering operation, the spherical contact member comes into direct contact with the flat surface of the pode j (and the hole wall).
A second spherical member is mounted on the body and is made of cedar contact material (a sphere that comes into contact with the end pressure machined surface of the force), and a second spherical member that engages with one end of the transmission rod on its inner part. and the opposite ends of said shafts are drivingly connected to a dialage, LVI)'l[' but similar. Sensing spherical wide contact area (1 on the opposite side of the head to align with 4)
An 11-pin long stem is provided, the stem carrying a spherical contact member at its outer end and adapted to be moved by a rack and binion device for rapidly setting the stem as required. (・ru. Since the gap between the main moving parts is relatively large, the parts will not get clogged when there is a lot of dust, and cleaning is also easy. DETAILED DESCRIPTION OF THE INVENTION In the Figures, reference character 1o generally refers to a cylinder yA-212 as shown in FIG. Linear Loe differential excitation transformer 14 with electronic display 16
Represents the cylinder tag 9-zo that has come to be used with. In either case, the head assembly has a generally cylindrical profile at its rear end, left y+Iil, as shown in FIG.
4'! ft1 on both sides of the body
Then, the pair of cut portions 20.22 are pushed out toward MiJ, and a pair of longitudinal force points 24.26 are defined. The cut portions 2υ, 22 are still scraps 24.
, 26 perpendicular to the cylindrical inner portion thereof. said body is formed with a shallow recess 31 at the bottom of said slot 32 communicating with said slot 32; Leaf spring 3
The leaf spring is fixed by a screw 411.42 screwed into a cooperating tapped hole 44.46 formed in the plane of the recess. The leaf spring 38 serves as a flexible pivot support for the sensing finger 48 and is sized to fit within the slot 32 with sufficient clearance. The pod 18 also has a threaded reservoir 5 at its left inner end.
0 is formed on the elongated shank 52 of the dialage as shown in FIG. 1, or the LVD as shown in FIG.
The head assembly is mounted on one end of the T. The pod is also formed with an axial passageway 54 extending from the neck 50 into the slot 32 to slidably receive a transmission rod 56 as shown in detail in FIGS. 8-11. There's a Natsu C like that. At the left end of the transmission rod 56 as seen in the figure,
Actuation stem of dialage 12 or LVDTl 4
The 0 town # portion is adapted to be engaged in a driving manner. The right end of the transmission rod is operatively engaged with a hard metal spherical member 58 carried by the sensing finger 48 as shown in FIG. The motion (arcuate motion) imparted to the sensing finger 48 around the flexible joint by the plate spring 38 is translated into a linear motion of the transmission rod through the spherical member 58, causing the transmission rod to move along its axis. and thereby provide a readout on a dialage, LVDT, or similar.The transmission rod 56 is located at its left end in a groove typically formed of bronze or the like, and its right end is It is supported on one side by a bin 62 which is supported laterally on the pode 18 near its forward end and traverses the lower portion of the slot 32.The distal end of the transmission rod 56 has a tactile force against said bin 62. A longitudinal central groove 66 is formed that defines a smooth lower surface 64 and a pair of parallel narrow longitudinal ridges 68, 70. The generally planar surface 64 resists rotation of the transmission rod 56;
On the other hand, the ridges and ridges on the surface 64 minimize movement of the rod or the intrusion of foreign matter between the transmission rod and the bottle 62 in the event of a defect. The two ridges on surface 66 are polished flat so that they are in direct contact with bottle 62. Such an arrangement improves the direction of the automatic groove +'Ii) and prevents sludge from accumulating in this area. Note that a balancing effect is obtained by providing two flat ridges spaced apart from each other. This still reduces the roughness effect of the bottle bearing surface. If only one plane is used, the effect imparted to the rod by the irregularities on the pin bearing surface is essentially twice that of using grooves and ridges as in the present invention. If there is an unevenness on the bottle along the center line of movement of the transmission rod, there is no risk that the transmission rod will be affected by the position (ρ1) within the gap provided by the groove 66. . If a rough surface is used without providing a central groove, the effect of the unevenness in the center on the rod will be maximized. If the surface of one ridge is uneven, the effect on 4'S will be minimal, and the same will be true if the surface is completely flat. The total effect on the bar when using a centrally grooved surface is therefore approximately half the effect that would occur when using a completely flat surface. The front end of the transmission rod is formed with a single V-shaped groove 72 passing diagonally through the tip for contacting the spherical member 58 shown in FIG. In this ■-shaped groove, a pair of parallel semi-cylindrical shallow ff1l 59 are overlapped 21, and the spherical member 58 is allowed to move in this groove. always on the same trajectory, thus significantly improving the service life of the instrument. A sensing spherical contact member γ4 is mounted on the top of the +3tl side of the finger piece 48, and the contact member is

[The finger piece 1 is connected to the mouth i, and the transmission rod is moved between the two fingers through this surface to operate the die M'luke 1-3-,) so that the 6-degree finger The actuation movement of the piece 48 is converted into a linear movement of the transmission rod 5G, which in turn causes the measured value to be displayed on a digital readout or digital readout device. Ru. Sensing sphere 1 contacts R74, F6 and sphere member 58 can both be replaced when they collapse or when both wear out. The upward movement of the sensing finger 48 is caused by the fermentation hole 32.
is restricted by a transverse pin 75 mounted across the body. , on the front top of Dobu-18 (・Extension + iJ function
, 76 are installed and 1. I? The stem 76 is arranged in a passage perpendicular to the body depth and has a limited movement aligned with the sensing spherical contact member 74. In the illustrated embodiment, the stem 76 has a scale. It is formed with a front surface 78 with a flat number 78 and a sloped side wall 8υ, 82 formed in a figure, which side wall is formed with a guide formed on the inner surface of the wall 34, 36 of the body near the tip. It fits smoothly into the road. The guideway comprises a pair of opposed sloped grooves 84, 86 adapted to receive the sloped side walls 80, 82 of the stem. The stem is slidably mounted within the groove, but its position within the guideway is controlled by a pinion 84 formed at the front top of the body 9 adjacent to the guideway. Rotatably mounted in a corresponding socket 86,
and meshes with rack teeth 88 formed along the surface 82 of the stem as shown in FIG. The binion has a hexagonal socket 90 for receiving one end of a hexagonal wrench so that the wrench can be used to rotate the binion and thereby to insert and remove the stem as necessary to pre-set the stem before performing a measurement operation. It has become. The socket 900 alternatively has a cross-shaped groove formed in the exposed end to accept a screwdriver or similar tool-C
The binion can be made to rotate. In either case, the rotation of the pinion and the adjustment of stem Ω are
Rather than multiple adjustments as would be required for one-way screw barrel stems known in the art, tools can be used to make the adjustments in position 14 within the set ring. The lower end of stem 76 is provided with a spherical contact member 92 which is press fit into a cooperating socket formed at the F end of the stem. This spherical member 92 can be replaced by -C by removing it by inserting a thin tool into an opening 94 formed in the stem adjacent to its upper rear portion. Mounted on the front face of the body is a plate 96 which extends partially over the face 78 of the stem and has a vernier scale along its edge by which the position of the stem can be determined by inspection. can. It will be appreciated that the stem 76 can be of several different lengths for each instrument, and that the stem can be made easily interchangeable according to the size of the workpiece to be measured. Once the position of the stem is adjusted, the stem is locked in this position by the locking wedge 98. The front nj wedge 98 is mounted in the resection portion 10U opposite the binion, proximate to the guideway for the stem, and is held by a set screw 102/, rQ ''(
and the screw is an open LJ 104 formed through a wedge.
The wedge is threadedly engaged with an N-threaded jack 106 at the rear of the cutout portion 100. The wedge is formed with a sloped surface 1υ8 adapted to engage with the sloped surface of the stem; and by tightening the screw 102, the wedge locks this stem without displacing the stem and holds it firmly in place when the measuring operation is carried out.1 Said screw 102 has a hexagonal screw at its end. has noget;
Alternatively, it has a conventional threaded head so that it can be operated by a conventional screwdriver or the like. An annular spring washer 110 can be mounted so that the wedge is automatically released when the screw 102 is loosened and the stem can be readjusted if necessary.
18 at its center defining two flat parts on the wedge surface.
A shallow groove 111 is formed. This is M for the stem! It is assumed that the stem is expanded and further made into a rectangular shape. If a simple half surface is provided on the wedge surface, a slight rounding of said surface will provide a locking force for the stem, with linear contact with the stem. A pair of parallel legs 114 roughly connected to the body 18 and the component parts of the head assembly M by means of a horizontal portion 118;
A U-shaped core M arm 112 consisting of 116 is mounted. This determining arm 112 is determined by the bottle 120]1? The bottle is mounted in cooperating holes 122, 124 in the legs and extends in the rear of the cutout portion 20.22, following a hole 126 formed in the body. . The outer surface of the legs 114, 116 is preferably curved to match the overall cylindrical curvature of the bore, so that there are no outward projections that would interfere with making hole measurements. The measurements of the legs are:
L, Decisive arm strength 5 Cut 1 part 2 υ, 22 fits well into the base, and an appropriate gap is left between the surface of the cut part, and the arm is especially cooled with coolant or similar To allow something to move freely without being stuck when there is something. Such dirt, coolant, etc., are likely to enter the under-shaft assembly during normal use of the instrument. The centering arm 112
In the normal state, the plate springs 128 and 130 cause the
The leaf springs are biased in a counterclockwise direction as seen in FIG. As the area reaches the resected portion 20.2
2 against the longitudinal shoulders 24,26. The upward movement of centering arm 112 is limited by a set screw 132, which is threaded through a tapped hole near the rear of body 18, the inner end of which is connected to pivot pin 120 as shown in FIG. At the rear it engages the innermost end of the second leg of the centering arm. Luck of determination! Other devices may be provided to limit Jh, such as struts or bins extending over the slots 32 and across the top of the body. It should be noted that the illustrated leaf spring may be replaced by another spring device such as a coil spring device, which coil spring device extends longitudinally within the body and engages said arm at one end, and II! ! Engages with a fixed part of the body at the end,
The arm can be made eccentric. In the forward part of said centering arm, near the transverse part 18, a CI pair of centering spherical members 134, 13'6 are provided, each of which has a semi-cylindrical groove positioned laterally of the arm. 138.140 for limited lateral movement. The depth of the groove is such that a portion of both spherical members 134, 136 contacts outwardly from the centering arm against the cylindrical inner surface of the reference ring or inner diameter, as shown in FIG. 5 and 141Δ. -C. By mounting the spherical members 134, 136 for limited movement in the lateral direction of the arm, said spherical members are attached to the cylindrical wall of the inner diameter and the body 1 along *zs, 3o.
8 can be touched at the same time. This allows very accurate positioning of the meter along the inner diameter and precise positioning of the measuring member of the meter along said inner diameter. If the centering spherical member is body 18
If no contact pressure is applied to the body or the finger is fixed to the gripping arm, the play between the body and the windshield may cause the /i & knowledge finger piece 48 to be slightly off-center when making the actual measurement. , it becomes possible to generate errors. However, the long spherical member 13
4.136 by mounting it with limited movement in the corresponding groove of the said spherical shape); When the measuring contact member is moved, it engages with the walls 2B, 3L of the body and the wall of the inner diameter to hold the measurement contact member in a plane along the inner diameter. To reduce wear on the body, particularly along the line of contact between the spherical members 134, 136 and the body, a material such as tungsten carbide is included in the walls 28, 30 as shown in FIGS. 6 and 12. Hard metal insert 142.1
44 or similar. Note that the surface of the wall 28.30 along the contact line with the centering spherical member is
Loe hardening can be avoided during manufacturing of the head assembly. This is done by pressing the spherical member firmly against the wall 28, 30 and repeatedly moving the centering arm 112 up and down, bending it into orbit against the spherical member. This instrument is used in the following manner. With the properly extended stem 76 in place, the head is inserted into the selected reference ring and the centering arm positions the sensing element, i.e. the spherical contact member 74.92. is located along the reference ring. The stem 76 is moved in and out as required to adjust the meter relative to the reference ring. This leaves the head assembly in place and the pinion 84
This is done by rotating the object in one direction or the other. Once the stem length is selected, screw 10
Lock the stem in place by tightening 2 and engaging the wedge 98. The instrument is then withdrawn from the base (vSIJ) and inserted into the inner diameter to be measured. The centering spherical member precisely positions the instrument within the rll face of the inner diameter and The linear center point is set by rocking the gauge slightly up into the bore so that a minimum 6 (1j) constant value is defined above the dial gauge or other measuring instrument. Although the present invention has been described in terms of specific embodiments, variations of <4+R are possible as will be readily apparent to those skilled in the art.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a cylinder dage head formed in accordance with the present invention and used with a dial dage; FIG. 2 is a view similar to FIG. 1 but showing the head used with a linear variable differential transformer; Figures; Figure 3 is an exploded perspective view of the head; Figure 4 is a detailed side view showing the sensing fingers and transmission rod arrangement; Figure 5 is an end view of the head assembly in the set ring; Figure 6 is the adjustment Detailed view of the rack-and-binion device for the possible stem: FIG. 7 is a top view of the wedge locking mechanism for the device shown in FIG. 6; FIG. 8 is a side view of the transmission rod; FIG. 9 is the transmission rod Bottom view of; #! Figure 10 is a top view of the transmission rod;
FIG. 11 is an end view showing the transmission rod and associated support bin; FIG. 12 is a top view of the head assembly; FIG. 16 is a partially cut away side view of the head assembly; FIG. An end view of the head. 18: Body, 38: Leaf spring, 48: Sensing finger piece, 58:
Metal spherical part A4.74: /l<(knowing sphere-shaped member,
76: Stem, 92: Spherical] contact member, 98: Locking wedge
112: Centering arm; 134, 136: Centering spherical member. Attorney: Akira Asamura Procedural Amendment (January 1980/r mouth, Mr. Commissioner of the Japan Patent Office 1, case description filed in 1157, τ'1 Application No. 156008 d3,
Person making the amendment 1 Relationship with the River Applicant 4, Agent 5, Date of amendment order Month 118, Showa II, Contents of the amendment: Reprint of the specification as shown in the attached sheet (no change in content)

Claims (1)

[Scope of Claims] (1) A cylinder head having a movable part U therein and displaying a measured value corresponding to the degree of movement of the member, comprising: a) a body; a) a coupling device operatively coupling the podium to the r-ge; c) mounted within the body for limited longitudinal movement and having at one end 1. (2) a hole engagement sensing member drivingly mounted on an end of the body and drivingly connected to the other end of the rod; ) an adjustable hole-engaging element mounted on a distal end of the body so as to be diametrically aligned with the sensing member on the opposite side of the head; and) a manually operated rack-and-binion device; operatively associated with said element;
a rack and pinion device adapted to extend said element diametrically toward said body and retract away from said body; The sensing member and the element to the diameter of the hole? 1) A head characterized in that it has a centering device for positioning. (2) Range of specific W'f nN requirements In the gear set forth in item 1, the rack and pinion device has rack teeth formed in the longitudinal direction of the pawl parallel to the movement path of the element;
A head having a pinion rotatably mounted within the distal end of the rack and meshing with the rack teeth, the pinion being manually rotated from the distal end. (3) The head according to claim 2, wherein the head is configured as a locking device and is mounted on the body and engages with the element to lock the element in a selected position. A head with a locking device. (4) In the head according to claim 6, d
i) a locking device is screwed into the body with a wedge mounted at the distal end adjacent to the element, a wedge engageable with the element, and a screw extending through the wedge; The wedge is selectively tightened against the element by 1tf
and a screw adapted to be removed or loosened from the element. (5) The head according to claim 4, wherein the wedge is formed with an element-engaging surface, and the receiving surface has at least one groove defining at least one pair of ridges at a position where it engages with the element. (6) Range of fraudulent claims In the head described in paragraph 4,
A head having a spring device operatively mounted between said wedge and said body to normally spring the wedge into a relaxed position. (7) In the head according to claim 1, a diagonally extending groove (1) is formed in the other end of the transmission rod, and the sensing member is flexibly and pivotably mounted on the body. and a spherical member that sits in the 11v,
(8) A head according to claim 7, whereby some pivoting movement of the sensing member is converted into a linear movement of the rod. a support member mounted to the body laterally and engaged with the rod along one side of the rod so as to be proximate the other end and opposite the groove; and forming a sliding support for the rod. (9) The head according to claim 8,
a flat surface is formed along one side of the bale;
A head having a longitudinal groove formed in said surface and a pair of spaced apart longitudinally extending narrow parallel rigs slidably engaging said support member. (10) The head according to claim 9, wherein the support member is a rigid cylindrical bottle. Uυ A head according to claim 7, including a first hard spherical contact member, the front being diametrically opposed to the adjustable element at a position where the contact member engages the Ail marking hole. A head mounted on a self-sensing member. a second hard spherical contact member, the contact member being adapted to engage the ljlJ ii+2 hole at the outer end of the adjustable element and having a diameter similar to that of the first spherical contact member; A head positioned so that it is facing the target. 031 Particularly ``Claim 7 includes a leaf saw connecting the sensing element to the body, and the leaf spring is entirely connected to the body. A head (a) extending flatly with the rod and positioned so as to be biasable towards or away from the pallet; The front dCC center force position has a U-shaped arm with a pair of parallel legs and a transverse member located at one end thereof, and a pivot device 2, and the pivot !41J device 1d is .1
The other end of 1 is connected to the body 1 such that the leg extends generally parallel to the bar and along the opposite side of the body 1, and the horizontal member 1 is connected to the body 1. a pivoting device disposed near the end of the arm; and a spring located between the arm and the body, springing in a direction away from the end of the arm and the end of the body. A head having a spring that looks like this. α5) jl+'i of special 1'i'gl'J? Enclosure No. 14
・In the 14th head, each 11JI+ of the arm,
l'+1 extending in the direction of the lateral force of the leg is formed at the one end, a six-centering spherical member is mounted in the valley groove for limited lateral movement 1Ib, and each centering spherical member of the front Fid A head in which a portion of the member extends outwardly from its corresponding groove and is adapted to press simultaneously against the body and the bore when the head is in the bore. [i+! In the head according to item 15, in which the six-point spherical member and the first
and a second spherical contact 171 are arranged in the same plane. (17) In the head according to claim 15, the zle data has a hardened metal track close to each of the six determining spherical members, and the core determining spherical shape iI
Head designed to fit with IS material. Uυ In the head according to claim 15,
A head having a stop device operatively connected to the head, adapted to limit movement of the arm about the pivot device. In the head according to claim 7. A vertical semi-cylindrical groove is formed on each side of the V if9. A head defining a pair of spaced parallel semi-cylindrical grooves along which the spherical portion is adapted to move. (7) In a head that has a slightly increased cylinder size and has a movable member inside, and is capable of displaying a constant value of 1 (1j) that corresponds to the degree of movement of the member, a) the body; and (a) the body. c) a coupling device for operatively coupling the member KIIiAa to said member KIIiAa mounted within said body for limited longitudinal movement and having an O6 at one end;
(2) a hole engagement sensing member;
At the distal end of said body, on one side thereof, drivingly and a
a sensing member flexibly mounted and further drivingly connected to the other end of said rod; and a suspended hole engaging element. A U-shaped centering arm, a pair of parallel legs, a structural member b'f f# at one end, and a pivot jJ! h device, the pivot device connecting the other end of the arm to the body so that the arm extends generally parallel to the bar and along the opposite button of the front six pipodes. together with a decisive arm so that said element and said transverse member are disposed near the end of said meso; a spring device connected to the same body and springing one end of the front end of the arm away from the end of the body;
a) a groove extending in the lateral direction of the arm; c) a six-point spherical member mounted for limited lateral movement in the front o[j groove; a head having a portion of each six-point spherical member extending outwardly from a corresponding groove so as to simultaneously contact the body and the hole when the head is in the front DD hole; . (21) The head according to claim 20, wherein the body has a hardened metal track adjacent to each of the six-point spherical members, and is adapted to engage with the spherical members. . (2) Range of %#'F MW Determination The head of paragraph 20, further comprising a stop device operatively connected to the head to limit movement of the arm about the pivot device. The head that has become. t23 time t'f In the head according to claim 20, a groove extending obliquely is formed in the other end of the transmission rod, and the sensing member is pivotally mounted on the body, and A head having a spherical portion that seats in said groove, such that any pivoting movement of said sensing member is converted into a linear movement of said rod. (To) The head according to claim 26,
a support member mounted on the body in a direction transverse to the rod; the support member extends along one side of the rod such that the support member is close to the other end and faces the groove; A head adapted to engage the rod and form a sliding support for the rod. (c) In the head according to claim 24,
the rod is formed with a generally flat surface along one side thereof;
A head having a longitudinal groove formed in said surface and a pair of spaced apart longitudinally extending spiral parallel grooves slidably engaging said support member. 2 (9) In the head described in claim 25,
A head in which the support member is a rigid cylindrical bottle. η In the head according to claim 26,
A head having a first hard spherical contact member mounted to the sensing member diametrically opposite the adjustable element in a position where the contact member engages the aperture. (2 barrels) A head according to claim 27, having a second spherical contact member, the contact member being adapted to engage the hole at the outer end of the adjustable element, A head positioned diametrically opposite to the contact portion.4. The head according to claim 26,
a leaf spring connecting the sensing member to the podium, the leaf spring generally extending parallel to the rod and proximate to or sliding from the rod; In the head according to paragraph 28, the centering spherical member and the first and second spherical contact members are located in the same plane. In the head according to claim 26, a semi-cylindrical groove is formed in the vertical direction on each side of the V-groove, and a pair of spaced apart grooves are formed on each side of the V-groove. The head is adapted to define a groove along which the spherical portion moves along the collar.