CN212552969U

CN212552969U - Fine-adjustable size setting device

Info

Publication number: CN212552969U
Application number: CN202021717849.8U
Authority: CN
Inventors: 于君
Original assignee: Shanghai Yunjie Intelligent Technology Center
Current assignee: Shanghai Yunjie Intelligent Technology Center
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-02-19
Anticipated expiration: 2030-08-18

Abstract

The invention provides a size setting device capable of fine adjustment, which is typically applied by arranging a toothed rack plate (201) with the tooth pitch of 1cm for a guide part (10-1) of a belt ruler plate (30), and adding a primary positioning part (40-1) which can be folded and is provided with teeth and can be meshed with the toothed rack plate (201) into a positioning component. The primary positioning part (40-1) is connected with a positioning backup plate (60-1) as a final positioning part through a fine adjustment screw assembly. The rotary knob (53) with the scale can finely adjust the micro displacement of the screw assembly and the final-stage positioning part (60-1) step by step, so that the size can be quickly set with high precision less than 1mm and accurately and repeatedly, and the defects of low precision and difficult accurate repetition of the prior art which seriously depends on the observation result of human eyes are avoided. The invention can also be applied to the high-precision measurement and setting operation of the angle size.

Description

Fine-adjustable size setting device

Technical Field

The invention belongs to a size metering device, and particularly relates to a size metering and presetting device capable of quickly and accurately positioning.

Background

In the existing cutting operation, in order to accurately cut materials according to a preset length and a preset size, a long guiding rule with a positioning mechanism is generally adopted as a tool. The working method is that an operator moves the positioning stop block to a dimension position meeting the requirement along the long running rule and locks the positioning stop block by a tightening mechanism. For a long time, the following two technical problems to be solved exist in this way:

1. the positioning accuracy depends heavily on close observation and judgment of operators, and the preset size accuracy is difficult to meet, so the machining size of the machined workpiece can hardly meet the tolerance requirement of higher accuracy.

2. When the machining is completed and the positioning stopper is moved, in the subsequent machining process, if the position set this time is desired to be restored again, it is difficult to ensure the repeatability, so that there is a high possibility that errors exceeding the requirements actually exist in the sizes which should theoretically be the same in the workpieces machined in different processes, thereby affecting the machining quality of the workpieces.

In the fine adjustment scheme disclosed in chinese patent 201420036268.6, a fine adjustment screw is used to assist the fine adjustment work of the main slider, which is helpful for the manual fine adjustment of the end size, but the final precision and the repeat precision of the positioning size of the scheme still depend on the observation and judgment results of people, and the problem is still not solved fundamentally.

In the precise positioning scheme disclosed in chinese patent 201520360644.1, a ruler strip with scales is used, the side of the ruler strip is provided with scale teeth corresponding to the scale positions one by one, a positioning device is provided with a retractable positioning latch block with matching tooth profiles, and the position is precisely set and locked by using the mutually meshed tooth profiles. The positioning error amplitude and the repeated setting error amplitude of the device do not need to depend on manual observation and judgment, so the device has high size setting precision. However, since the minimum set dimension unit of this device is the same as the pitch value of the tooth profile, the set dimension length is only an integral multiple of this value, and a smaller dimension cannot be set. If the pitch of the tooth profile is too small, for example, 1mm, the tooth profile is easily damaged and easily slips due to the limitation of the material strength of the small tooth profile, and the tooth profile space is easily blocked by foreign matters, thereby affecting the use function and the precision requirement.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a size setting device capable of fine adjustment, and the basic features of the present invention are:

a) comprises a guide part and a guide part, wherein,

b) the guide portion includes positioning notches arranged at a uniform pitch along a guide direction of the guide portion,

c) the guide portion includes a size mark corresponding to the positioning notch,

d) comprising a positioning assembly displaceable relative to a guiding direction of the guide,

e) the positioning assembly comprises a primary positioning part, a final positioning part and a fine adjustment mechanism for connecting the primary positioning part and the final positioning part,

f) the primary positioning portion includes a positioning element engageable with any of the positioning recesses,

g) when the positioning element is engaged with any one of the positioning notches, displacement of the primary positioning portion along the guiding direction of the guiding portion is locked,

h) a distance between the primary positioning portion and the final positioning portion in a guide direction of the guide portion may be adjusted by the fine adjustment mechanism.

Based on the same inventive principle, for application in setting of angular dimensions, the invention is further characterized in that:

a) the guide part is provided with a circular arc-shaped guide path,

b) the positioning notches are arranged along a circular arc-shaped guide path of the guide portion,

c) the size marks are arranged along a circular arc-shaped guide path of the guide portion,

d) the positioning component and the guide part can perform relative angular displacement around the same axis,

e) when the positioning element is engaged with any one of the positioning notches, the relative angular displacement of the primary positioning portion along the arc-shaped guiding direction of the guiding portion is locked,

f) a relative angular distance between the primary positioning portion and the final positioning portion along a circular arc guide direction of the guide portion may be adjusted by the fine adjustment mechanism.

Preferably, the first and second electrodes are formed of a metal,

a) the fine adjustment mechanism comprises a fine adjustment screw rod and a fine adjustment screw hole which are mutually screwed,

b) the fine adjustment mechanism comprises a knob which can drive the fine adjustment screw rod and the fine adjustment screw hole to mutually rotate and screw,

c) the axial direction of the fine adjustment screw is parallel to the guiding direction of the guiding part.

Preferably, the first and second electrodes are formed of a metal,

a) the fine adjustment screw rod comprises two sections of threads with opposite rotation directions,

b) the fine tuning screw holes comprise two screw holes with opposite rotation directions,

c) the two screw holes with opposite rotation directions are respectively arranged on the primary positioning part and the final positioning part.

Preferably, the first and second electrodes are formed of a metal,

a) the fine tuning screw hole is arranged on the primary positioning part,

b) the fine adjustment screw rod forms the final-stage positioning part.

Based on the same inventive principle, the fine adjustment mechanism may include a cam and a follower that act on the first-stage positioning portion and the last-stage positioning portion, and a knob that can drive the cam to rotate.

Preferably, the first and second electrodes are formed of a metal,

a) the final stage positioning part comprises a positioning backup plate which can swing,

b) the direction of the swing shaft of the positioning backup plate is parallel to the guiding direction of the guiding part,

c) the guide portion is provided with two rows of the size marks parallel to each other,

d) the positioning backup plate is respectively close to the two rows of size marks at two limit swing positions,

e) comprises a telescopic rod which can be displaced along the guiding direction of the guiding part,

f) one end of the telescopic rod is provided with a positioning block which can be attached to the positioning backup plate.

The size setting device capable of fine adjustment is characterized in that the size setting work is completed according to two steps, the first step utilizes the meshing action between the positioning unit and the positioning notch to complete the primary positioning with larger size unit value and accurate positioning, and the second step utilizes a fine adjustment mechanism to perform final positioning with smaller size unit value and still accurate positioning, so that the final accurate positioning of the preset size is completed. Because the positioning precision of each stage does not depend on the observation and judgment of human eyes any more and only depends on the rigid meshing of parts, the high-precision repeated positioning can be conveniently and quickly carried out, and the aim of the invention is achieved.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and various embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Drawings

FIG. 1 is a front side perspective view of embodiment 1;

FIG. 2 is a rear side perspective view of embodiment 1;

FIG. 3 is an exploded perspective view of embodiment 1, in which a fine adjustment knob 53 is partially cut;

FIG. 4 is a cross-sectional view along the axis of the fine adjustment screw of embodiment 1;

FIG. 5 is a front side perspective view of embodiment 2;

FIG. 6 is a rear side perspective view of embodiment 2;

FIG. 7 is an exploded perspective view of embodiment 2;

FIG. 8 is a right side view of embodiment 2;

FIGS. 9 and 10 are front side perspective views of two states of use of embodiment 3;

FIG. 11 is an exploded perspective view of embodiment 3;

FIG. 12 is an axial partial cross-sectional front view of embodiment 3;

FIG. 13 is a front side perspective view of embodiment 4;

FIG. 14 is a front side perspective partially cut-away perspective view of embodiment 4;

FIG. 15 is an exploded perspective view of the embodiment 4, in which a fine adjustment knob 53 is partially cut;

FIG. 16 is a right side view of embodiment 4;

FIG. 17 is a front side perspective view of embodiment 5;

FIG. 18 is a rear side perspective view of embodiment 5;

FIG. 19 is an exploded perspective view of the embodiment 5, in which a fine adjustment nut 51 is partially cut;

FIGS. 20 and 21 are front side perspective views of the preferred embodiment 6;

FIG. 22 is a right side view of embodiment 6;

FIG. 23 is an exploded perspective view of the preferred embodiment 6, in which a fine adjustment knob 53 is partially cut;

FIGS. 24 and 25 are front side perspective views of the preferred embodiment 7;

FIG. 26 is an exploded perspective view of the preferred embodiment 7, in which the primary positioning portion 40-2 is partially cut away;

FIG. 27 is a front side perspective view of the preferred embodiment 7, in which the primary positioner 40 and the backup plate 60-1 are partially cut away;

FIG. 28 is a right side view of embodiment 7;

FIG. 29 is a top view of embodiment 8;

FIG. 30 is a rear perspective view of preferred embodiment 8;

FIG. 31 is an exploded perspective view of the preferred embodiment 8, in which the fine adjustment knob 53 and the primary positioning portion 40-4 are partially cut away;

FIG. 32 is a front side perspective view of embodiment 9;

FIG. 33 is a front side angular perspective view of example 9 taken along a midline longitudinal plane;

FIG. 34 is an exploded perspective view of the preferred embodiment 9;

FIG. 35 is a front side perspective view of embodiment 10;

FIG. 36 is a rear side perspective view of the preferred embodiment 10;

FIG. 37 is an exploded perspective view of the preferred embodiment 10;

fig. 38 is a front side perspective view in the revolving use state of embodiment 10.

FIG. 39 is a front side perspective view of the preferred embodiment 11;

FIG. 40 is a longitudinal sectional view taken along the center line of the guide part in accordance with example 11;

fig. 41 is a bottom view of the trimming cam of embodiment 11;

FIG. 42 is an exploded perspective view of example 11.

Reference numerals: 10 a guide part; 10-1 aluminum profile type guide part; 10-2 a guide portion with a tooth row;

10-3 sliding table saw profiling column type guiding parts; 10-4 a guide portion with a hole row;

10-5 sector rotary guide part with transverse shaft hole array; 10-6 sector rotary guide part with vertical shaft hole array;

10-7 sector rotary guide part with tooth row; 101 a guide part mounting hole; 102 sector rotary guide main shaft;

20 a positioning notch; 20-1 tooth-shaped positioning notches; 20-2 hole type positioning notches; 201 a rack plate; 202 a perforated slat;

a 30-foot plate; 30-1 main ruler plate; 30-2 auxiliary ruler plates; 30-3 primary size columns; 30-4 last size column;

301 size marker; 40 a primary positioning section; 40-1 horizontal axis swing type primary positioning part;

40-2 a separable primary locator; 40-3 detachable primary positioning part back splint;

40-4 vertical shaft swinging type primary positioning part; 401 positioning a bit; 401-1 tooth-shaped positioning bits; 401-2 pin type positioning bits;

402 a primary positioner slide base; 403 fine-tuning the nut mounting notch; 404 sliding the turntable mounting notch of the base;

405 a primary positioning part mounting notch of the sliding base; 406 a positioning substrate of tooth type;

407 primary positioning part limiting edge; 408 primary positioning size observation bits; 409 pin type positioning element guide holes;

4010 pin-type positioning element pull-up handle; 4011 a tooth-shaped positioning element slide; 4012 tooth-shaped positioning element pull back the handle;

50 fine adjustment of the screw rod; 50-1 standard bolt type fine adjustment screw; 50-2, a customized fine adjustment screw rod with a scale knob;

50-3 of a hollow fine tuning screw; 50-4 of a fine adjustment screw with reverse double thread sections; 50-5 fine tuning worm;

501 fine-tuning a thread section; 502 fine tuning the worm mandrel; 503 fine-tuning the screw shaft shoulder; 504 fine tuning the screw mandrel;

505 fine-tuning the outer hexagon head of the screw; 51 fine adjustment of the nut; 511 fine tuning the nut bottom slide;

51-1 primary vertical axis rotary fine adjustment nut; 51-2 final-stage vertical shaft rotary fine adjustment nuts;

51-3 fine tuning screw holes on the primary positioning part; 51-4 positioning a fine adjustment screw hole on the backup plate; 51-5 fine tuning fan-shaped worm gears;

52 fine tuning the nut sleeve; 53 fine adjustment knob; 531 fine-tuning the positioning concave strip; 54 fine-tuning the elastic positioning turntable;

55 fine-tuning scale marks; 56 fine-tuning the scale to align with the marked line; 57 fine-tuning the scale to align with the scale plate;

571 fine-tuning the scale to align with the limiting bolt of the wire marking disc; 60 final stage positioning part; 60-1 horizontal shaft swinging and rotating type positioning backup plate;

60-2 vertical shaft swinging type positioning backup plates; 601, positioning the subjective positioning of the size of a backup plate;

602 locating a second size viewing bit of the backup plate; 603 last stage fix size observation bit;

6031 final positioning size enlarging mark; 604 final positioning size enlarging observation wheel;

6041 final-stage positioning size enlarging observation wheel transmission gear; 6042 final-stage positioning size enlarging observation wheel transmission rack;

605 fine tuning the worm mounting seat; 606 positioning a swing shaft hole of the backup plate; 607 fine tuning the screw mounting seat;

71 an elastic positioning ball; 72 elastic positioning pieces; 73 elastic ball positioning counter bore;

a compression spring of the 74-1 needle roller thrust bearing; 74-2 a return spring for the fine adjustment knob;

a 74-3 pin-type positioning compression spring; 75 a ball spring; a 76 tension spring; 77 a bolt; 77-1 hexagon socket head cap screw;

78 screw holes; 79 needle roller thrust bearings; 80 a nut; 81, pushing a bench saw by a die holder;

82 a locking handle of the sliding table saw leaning die holder; 83 a sliding table saw table; fixing the corner connectors by 84; 85 limiting clamp plates;

86 telescoping rods; 861 telescoping rod positioning block; 862 contact surface of telescopic rod positioning block; 87 chord section;

88 a profiled hole; 89 shaft end baffle; 90 elastic ball positioning holes; 91 supporting the rod; 92 rivet; 93 hexagonal holes;

94 round steel fixing bolts; 95 tightly fixing the screw plug; a 96U-shaped baffle plate; 97 elastic cylindrical pins;

98 rack limit adjusting bolts; 99 to correct the hole.

Detailed Description

Example 1 is shown in fig. 1 to 4. Referring to fig. 1 and 2, the present embodiment employs an aluminum profile type guide portion 10-1 pre-inserted with a standard ruler plate 30, which is specially used for a common carpentry guiding ruler in the market. The guide portion 10-1 may be fixedly attached to the table by a fixed corner brace 84. Referring to fig. 3 and 4, the horizontal axis swing type primary positioning portion 40-1 constituting the positioning assembly is hinged to a primary positioning portion sliding base 402 by a standard bolt type fine adjustment screw 50-1 having a pitch of 2mm, and the primary positioning portion sliding base 402 is slidable along the guide portion 10-1 under the restriction of the stopper clamp 85.

The primary positioning portion 40-1 is provided with 5 tooth-shaped positioning elements 401-1 having a pitch of 1 cm. A toothed rack plate 201 with tooth-shaped positioning notches 20-1 having a pitch of 1cm is fixedly connected to the rear side of the aluminum profile type guide portion 10-1. One end of the fine adjustment screw 50-1 is combined with the fine adjustment knob 53 by an elastic cylindrical pin 97, the primary positioning part 40-1 is clamped by two needle roller thrust bearings 79, and the pressing spring 74-1 in the fine adjustment knob 53 presses the needle roller thrust bearings 79, so that the axial parts are kept in a close and relatively rotatable matching state.

The horizontal axis swinging type positioning backup plate 60-1 forming the final-stage positioning part is connected with the middle part of the fine adjustment screw 50-1 in a screwing way through a fine adjustment screw hole. The left side or the right side of the positioning backup plate 60-1 is used as a working surface for size positioning and is used as a positioning backup of a machined part.

When the size setting operation is carried out, the transverse shaft swinging type primary positioning part 40-1 is firstly turned forwards, so that the tooth-shaped positioning part 401-1 and the tooth-shaped positioning notch 20-1 of the rack plate 201 are in a mutually separated state, then the primary positioning part 40-1 slides to the centimeter-level preset size position of the ruler plate 30 along the guide part 10-1 according to the size requirement, the primary positioning part 40-1 is swung backwards to the bottom, so that the tooth-shaped positioning part 401-1 and the tooth-shaped positioning notch 20-1 of the rack plate 201 are mutually meshed, and the primary positioning part 40-1 is locked at the preset primary position of a certain centimeter-level unit. For example, if the size to be set at this time is 513mm, the primary positioning portion 40-1 should be locked at the position of 51 cm or 52 cm by the above-described operation so as to observe the main positioning 601 of the positioning fence size (see fig. 1).

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment screw 50-1 to rotate, and the transverse shaft swinging type positioning backup plate 60-1 with the fine adjustment screw hole is driven to perform fine movement displacement along the axial direction of the fine adjustment screw 50-1. The positioning backup plate 60-1 can move 1mm per half revolution of the fine adjustment screw 50-1 with the thread pitch of 2 mm. The half turn will move 0.5 mm. The direction of rotation of the fine adjustment knob 53 should be determined according to the length of the locking position of the current tooth-type positioning unit 401-1 in comparison with a predetermined size. If the locking position exceeds a predetermined dimension, the rotation direction of the fine adjustment knob 50-1 should be such that the positioning backup plate 60-1 moves in a direction to decrease the positioning dimension, and vice versa. The dimension still required to be set is 513mm as an example, if the tooth-shaped positioning unit 401-1 is locked at 51 cm, the rotation direction of the fine adjustment knob 50-1 should make the positioning position of the working surface of the positioning backup plate 60-1 move 3mm towards the right side direction of the increased dimension; if the tooth-shaped positioning unit 401-1 is locked at 52 cm, the rotation direction of the fine adjustment knob 50-1 should move the positioning position of the working surface of the positioning backup plate 60-1 by 7mm in the left direction of the reduced size.

Visual observation of the relative position of the fine adjustment scale markings 55 on the fine adjustment knob 53 and the fine adjustment scale alignment markings 56 on the primary positioning portion 40-1 will observe and determine the range of variation in which the current fine adjustment position is less than 1 mm. The elastic engagement between the elastic end nose of the elastic positioning piece 72 of the primary positioning portion 40-1 and the concave fine adjustment scale mark 55 of the fine adjustment knob 53 will assist the operator in performing an accurate fine adjustment operation more easily. In this embodiment, the concave fine adjustment scale mark 55 on the fine adjustment knob 53 is equally set with 36 ° as the basic unit, and the displacement change of the positioning backup plate 60-1 can be increased or decreased by 0.1mm by rotating one basic unit.

Because the precision of the fine adjustment operation result of the device only depends on the machining error of the mechanism part, and does not need to depend on the observation and judgment of human eyes, compared with the prior art, the device has the advantages of high positioning precision and accurate and repeated positioning, and achieves the purpose of the invention.

Example 2 is shown in fig. 5 to 8. Referring to fig. 5 and 6, the present embodiment also employs an aluminum profile type guide 10-1 with a ruler 30 mounted thereon and can be fixed by a fixing bracket 84. Referring to fig. 7 and 8, the horizontal axis swinging type primary positioning portion 40-1 constituting the positioning assembly is hinged to a U-shaped fine adjustment screw mounting seat 605 constituting a component of the final positioning portion by a standard bolt type fine adjustment screw 50-1 having a pitch of 2mm, and the fine adjustment screw mounting seat 605 is slidable along the guide portion 10-1 under the restriction of the limit clamp 85.

The primary positioning portion 40-1 is provided with 5 tooth-shaped positioning elements 401-1 having a pitch of 1 cm. A toothed rack plate 201 with tooth-shaped positioning notches 20-1 having a pitch of 1cm is fixedly connected to the rear side of the aluminum profile type guide portion 10-1. The outer end of the hexagonal head of the fine adjustment screw 50-1 and one side plate of the fine adjustment screw mounting seat 605 clamp the transverse shaft swing type positioning backup plate 60-1 through two needle roller thrust bearings 79. The end of the thread of the fine adjustment screw 50-1 with the tangential surface 87 is inserted into the shaped hole 88 of the fine adjustment screw mounting seat 605 with a shape matching to the shape of the screw, so that the screw is not rotatable. The threaded end of the fine adjustment screw 50-1 is tightly connected with the other side plate of the fine adjustment screw mounting seat 605 by the self-locking nut 80.

A fine adjustment nut 51 which is composed of an M14 standard hexagon head nut with the thickness of 14mm and the thread pitch of 2mm is screwed and connected with the middle part of the fine adjustment screw 50-1. The fine adjustment nut 51 is located in a fine adjustment nut installation notch 403 of 14mm width in the middle section of the shaft hole portion of the primary positioning portion 40-1. The fine adjustment nut 51 is inserted into the hexagonal hole of the fine adjustment nut sleeve 52. Fine adjustment scale markings 55 equally divided at 22.5 degrees are arranged on the periphery of the fine adjustment nut sleeve 52, and fine adjustment scale alignment markings 56 are arranged at the corresponding position of the primary positioning part 40-1. The fine tuning nut sleeve 52 is also provided with a fine tuning positioning concave strip 531 at the periphery. The middle part of the inner side surface of the primary positioning part 40-1 is provided with an elastic positioning sheet 72. When the fine adjustment nut sleeve 52 is rotated, the end bead of the resilient retention tab 72 is resiliently retained within the fine adjustment retention notch 531.

The left side surface of the positioning backup plate 60-1 serves as a working surface for size positioning and serves as a positioning backup for a machined part.

When the size setting operation is performed, the transverse shaft swinging type primary positioning part 40-1 is firstly slid and locked at a preset centimeter-level primary size position.

Then, the fine adjustment nut sleeve 52 is rotated to drive the fine adjustment nut 51 to rotate, so as to drive the fine adjustment screw 50-1 to perform micro-motion displacement along the axial direction, and synchronously drive the fine adjustment screw mounting seat 605 and the transverse shaft swinging type positioning backup plate 60-1 to perform micro-motion displacement. Meanwhile, the position change of the positioning backup plate in the ruler plate 30 is observed through subjective positioning 601, the position change of millimeter level is judged, and the position change smaller than millimeter level is judged by observing the relative position of the fine adjustment scale marking 55 on the fine adjustment nut sleeve 52 and the fine adjustment scale alignment marking 56. In the present embodiment, the predetermined dimensions of 0.5mm, 0.25mm, 0.125mm can be set quickly and precisely by using the elastic auxiliary positioning function between the elastic positioning plate 72 and the fine-tuning positioning concave strip 531.

Example 3 is shown in fig. 9 to 12. Referring to fig. 9 and 10, the present embodiment uses an aluminum profile type guide 10-1 specially used for a cross cutting backer, which is provided with a main ruler plate 30-1 and an auxiliary ruler plate 30-2 of a precision sliding table saw commonly used in the market. The guide portion 10-1 is provided with an extension rod 86 required for the super-long size setting. Referring to fig. 11 and 12, two side plates of the U-shaped horizontal axis swing type primary positioner 40-1 constituting the positioner assembly are inserted into the primary positioner mounting notches 405 of the primary positioner sliding base 402 and are hinged to the primary positioner sliding base 402 by the fine adjustment screws 50-1. The primary positioner sliding base 402 is displaceable along the guide portion 10-1 under the restriction of the stopper bridge 85.

The primary positioning portion 40-1 is provided with 5 tooth-shaped positioning elements 401-1 having a pitch of 1 cm. A rack plate 201 with tooth-shaped positioning notches 20-1 having a pitch of 1cm is fixed to the rear side of the guide portion 10-1.

The right end of the fine adjustment screw 50-1 clamps the transverse shaft swinging type positioning backup plate 60-1 through a shaft shoulder 503 and a shaft end baffle 89 in a clearance fit mode. The left section of the fine adjustment screw 50-1 with the chord section 87 passes through the fine adjustment elastic positioning turntable 54 with the concave strip, then passes through the special-shaped hole of the fine adjustment knob 53, and is fixedly connected with the fine adjustment knob 53 through a fastening screw plug (not shown).

A fine adjustment nut 51 made of an M14 standard hexagon nut having a thickness of 14mm and a pitch of 2mm is fitted into the fine adjustment nut fitting recess 403 of the primary positioning portion slide base 402 with interference fit, and one side surface is fitted to the bottom surface of the fitting recess 403. The middle threaded section 501 of the fine adjustment screw 50-1 is screwed with the fine adjustment nut 51.

The fine adjustment elastic positioning turntable 54 with a concave strip is arranged in the turntable mounting notch 404 of the primary positioning part sliding base 402 and can rotate synchronously with the fine adjustment screw 50. The edge cylindrical surface of the fine-tuning elastic positioning turntable 54 is provided with 8 equally-divided fine-tuning scale marks 55, and the round side surface is provided with 8 equally-divided elastic ball positioning counter bores 73 in a circumferential row form. Two elastic positioning balls 71-1 and 71-2 separated by a positioning ball spring 75 are arranged in a through hole of a primary positioning part sliding base 402 between the left side plate of the horizontal shaft swinging type primary positioning part 40-1 and the fine adjustment elastic positioning turntable 54. When the fine tuning elastic positioning turntable 54 is rotated, one of the elastic positioning balls 71-1 can be clamped into the elastic ball positioning counter bore 73 of the fine tuning elastic positioning turntable 54; when the horizontal axis swinging type primary positioning part 40-1 is turned over, the other elastic positioning ball 71-2 can be clamped into the two elastic ball positioning holes 90 at the corresponding position of the horizontal axis swinging type primary positioning part 40-1, so that the elastic blocking effect is realized.

Referring to fig. 9, when the dimension setting operation is required for a short material with a length not exceeding the set range of the main scale plate, the transverse-axis swinging type positioning backup plate 60-1 is firstly folded forward, then the position change of the main scale plate 30-1 is subjectively measured according to the dimension of the positioning backup plate of the transverse-axis swinging type positioning backup plate 60-1, and the transverse-axis swinging type primary positioning part 40-1 slides along the guide part 10-1 according to the required dimension and is locked at the centimeter-scale dimension position of the main scale plate 30-1.

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment screw 50 to rotate, so that the fine adjustment screw 50-1 is slightly moved along the axial direction under the action of the fine adjustment nut 51, and the transverse shaft swinging type positioning backup plate 60-1 is synchronously driven to be slightly moved to the required direction, and the millimeter-scale size fine adjustment is carried out. Meanwhile, the position change of the main scale plate 30 of the positioning backup plate size subjective positioning 601 is observed, and the position change smaller than millimeter level is judged by observing the relative position between the fine adjustment scale marking 55 on the fine adjustment elastic positioning turntable 54 and the fine adjustment scale alignment marking 56 arranged at the corresponding position of the primary positioning part sliding base 402, so that the size setting at this time is completed.

Referring to fig. 10, when the dimension setting operation is required for a long material whose length exceeds the setting range of the main scale plate, the horizontal axis swinging type positioning backup plate 60-1 is firstly folded backwards, then the position of the positioning backup plate second dimension observation position 602 of the horizontal axis swinging type positioning backup plate 60-1 on the auxiliary scale plate 30-2 is changed, and the horizontal axis swinging type primary positioning part 40-1 is slid along the guide part 10-1 according to the required dimension and locked at the centimeter-scale dimension position of the auxiliary scale plate 30-2.

Then, after the fine adjustment setting operation of millimeter-scale dimension is completed in the above manner, the screw-down telescopic rod positioning block 861 is loosened and moved leftward to drive the telescopic rod 86 to extend out from the left end of the guide portion 10-1. When the telescopic rod positioning block 861 moves leftwards to a position where the contact surface 862 clings to the transverse shaft swinging type positioning backup plate 60-1 and is screwed and locked, the positioning backup plate (not shown) at the left end of the telescopic rod 86 is used as a processing backup of an overlong workpiece.

In this embodiment, the primary positioning portion sliding base 402 can be manufactured by using a customized aluminum profile and a post-processing procedure.

The size setting operation of the workpiece with the normal size and the overlong size can be completed by only one set of positioning assembly, the mechanism is simplified, and the manufacturing cost is reduced.

Example 4 is shown in fig. 13 to 16. Referring to fig. 13 and 14, the present embodiment can be applied to self-modification of a middle running rule set of a current precision sliding table saw. The table saw fence 81 with the lock handle 82 is a size setting object of the present embodiment. The sliding table saw fence acts as a guide 10-3 of the present embodiment.

The horizontal axis swinging type primary positioning part 40-1 constituting the positioning assembly is installed on the guide part 10-3 made of round steel with the diameter of 40mm in a clearance fit manner through a C-shaped hole, and can slide along the guide part 10-3 because the opening position of the C-shaped hole avoids a round steel fixing bolt 94 (see figure 16) of the guide part 10-3.

The tooth positioning substrate 406 coupled to the swing end of the horizontal axis swing type primary positioning portion 40-1 has 5 tooth positioning portions 401-1 with a pitch of 1 cm. The toothed rack plate 201 with the 1cm pitch tooth-type positioning notches 20-1 and the main blade plate 30 are fixedly mounted on the side edge of the table saw table 83.

A fine adjustment nut 51 is screwed by an M14 hexagonal-head standard bolt-type fine adjustment screw 50-1 having a pitch of 2mm and installed in a through hole of a horizontal-shaft swinging-type primary positioning portion 40-1 and a 14 mm-thick hexagonal-head M14 nut having a pitch of 2mm and installed in a notch 403 of the horizontal-shaft swinging-type primary positioning portion 40-1. When the fine adjustment screw 50-1 is installed, after passing through the fine adjustment knob 53, the outer hexagonal head 505 of the fine adjustment screw is retracted into the fine adjustment knob 53 with the hexagonal slide way, and the fine adjustment knob 53 is always elastically attached to the outer end face of the horizontal shaft swinging type primary positioning part 40-1 by the return spring 74-2.

The fine adjustment knob 53 is provided with a fine adjustment scale marking 55, and a fine adjustment scale alignment marking 56 is arranged at a corresponding position of the horizontal shaft swinging type primary positioning part 40-1. The spring ball head screw type elastic positioning ball 71 arranged in the threaded hole of the horizontal shaft swinging type primary positioning part 40-1 and the elastic ball positioning counter bore 73 arranged on the inner end surface of the fine adjustment knob 53 form an elastic auxiliary positioning function.

In this embodiment, the standard bolt-type fine adjustment screw 50-1 itself serves as the final stage positioning portion.

When the size setting operation is carried out, the sliding table saw leaning die holder 81 is moved firstly, the middle guiding rule on the outer side of the sliding table saw leaning die holder is enabled to roughly move to the centimeter-level position of the rule plate 30, then the transverse shaft swinging type primary positioning part 40-1 is slid to the position close to the sliding table saw leaning die holder 81, the tooth-shaped positioning part 401-1 and the rack plate 201 are locked at the centimeter-level primary size position meeting the preset size requirement, then the fine adjustment knob 53 is rotated to drive the fine adjustment screw rod 50-1 to slightly move along the axial direction, meanwhile, the relative position of the fine adjustment scale marking line 55 arranged on the fine adjustment knob 53 and the fine adjustment scale alignment marking line 56 is observed, the position change smaller than the millimeter level is judged, and the millimeter-level or submillimeter-level size is set. Then, the sliding table saw backing die seat 81 is moved again to be tightly attached to the tail end face of the thread of the fine adjustment screw 50-1, and finally, the operation of accurately setting the size of the middle guiding ruler is completed. Obviously, during the first installation of the assembly of the present embodiment, in order to obtain an accurate size setting function, it is necessary to adjust and correct the insertion angle of the fine adjustment screw outer hexagonal head 505 multiple times, and to adjust the position of the rack-carrying plate 201 in a fitting manner. If desired, it may be desirable to grind down the contact area of the rip fence 81 with the end of the trimmer screw.

Example 5 is shown in fig. 17 to 19. The guide portion of the present embodiment is constituted by a toothed guide portion 10-2 combined with a rack plate and a blade plate 30. The guide portion 10-2 can be fixed to the work surface by means of the mounting hole 101. The separable primary positioning part 40-2 and the back splint 40-3 clamp the tooth positioning base plate 406 and are fixed and combined by the rivet 92 to form a positioning assembly. The bottom edge of the positioning substrate 406 has 5 positioning teeth 401-1 with a pitch of 1 cm. The upper edge of the guide portion 10-2 is an array of tooth-shaped positioning notches 20-1 with a pitch of 1 cm.

A fine adjusting nut 51 with the thread pitch of 2mm is arranged between the inner sides of the left side plate and the right side plate of the U-shaped separable primary positioning part 40-2 in a clearance fit mode. Screw holes 78 are formed at both ends of a fine adjustment screw 50 screwed with the fine adjustment nut 51 and having a pitch of 2mm, and both ends of the fine adjustment screw 50 are fixedly connected with the two final-stage positioning portions 60 by means of two hexagon socket head cap screws 77 respectively after penetrating through shaft holes of left and right side plates of the separable primary positioning portion 40-2. Both ends of a support bar 91 passing through the left and right side plates of the separable primary positioner 40-2 are also fixedly coupled to the two final positioner 60 by means of hexagon socket head bolts 77-1. The fine adjustment nut 51 is provided with fine adjustment scale marks 55 with an angular distance of 18 degrees and fine adjustment positioning concave strips 531 with an angular distance of 18 degrees. When the fine adjustment nut 51 is rotated, the elastic projected ridges of the elastic positioning pieces 72 mounted on the separable primary positioning portion 40-2 are caught in the fine adjustment positioning recessed strips 531 of the fine adjustment nut 51. Fine adjustment scale alignment marks 56 are arranged above the left side plate and the right side plate of the separable primary positioning part 40-2.

In this embodiment, the outer side surfaces of the two final positioning portions 60 have a distance of 10cm, and both can serve as the datum plane of the size backup plate.

When the size setting operation is performed, the guide part 10-2 is clamped by the concave gap between the separable primary positioning part 40-2 and the back splint 40-3, and the tooth-shaped positioning part 401-1 of the tooth-shaped positioning part substrate 406 is clamped into the tooth-shaped positioning notch 20-1 of the guide part 10-2 at the predetermined centimeter-sized position.

Then, the fine adjustment nut 51 is rotated to drive the fine adjustment screw 50-1 to perform micro-motion displacement along the axial direction, and synchronously drive the final positioning part 60 to perform micro-motion displacement. Meanwhile, the position change of the outer side surface sideline of the final-stage positioning part 60 on the ruler plate 30 is observed, the position change of a millimeter level is judged, and the relative position of the fine adjustment scale marking 55 on the fine adjustment nut 51 and the fine adjustment scale alignment marking 56 is observed in a matched mode, so that the position change smaller than the millimeter level is judged.

When other sizes are required to be set, the whole positioning assembly can be directly lifted upwards and moved to other positions to operate the process again.

Obviously, in practical applications, only one of the two final stage positioning portions 60 may be installed and used.

Example 6 is shown in fig. 20 to 23. This embodiment also employs an aluminum profile type guide portion 10-1 equipped with a scale plate 30. Referring to fig. 23, a fine adjustment screw hole 51-3 is provided above the separable primary positioning portion 40-2 with the limiting edge 407 at both sides. A horizontal shaft swinging type positioning backup plate 60-1 is also provided with a fine adjustment screw hole 51-4. One end of a fine adjustment screw 50-4 with a reverse double-thread section is screwed into and penetrates through the fine adjustment screw hole 51-1 of the primary positioning part 40-2, and then is connected with a fine adjustment knob 53 through a tangential surface 87 and a bolt 77. The other end of the fine adjustment screw 50-4 is screwed with a fine adjustment screw hole 51-4 on the positioning backup plate. The thread pitches of the fine adjustment screw hole and the fine adjustment bolt are both 2 mm. Between the left and right screw sections of the fine adjustment screw 50-4 with reverse double screw sections is a fine adjustment elastic positioning turntable 54 on which 8 fine adjustment positioning concave strips 531 are evenly distributed with angular distance. An elastic positioning ball 71 supported by a spring 75 is arranged in a hole at a corresponding position of the separable primary positioning part 40-2 below the fine adjustment elastic positioning turntable 54.

The bottom of the separable primary positioning part 40-2 is provided with 5 pin-type positioning units 401-2. The cavity of the aluminum profile type guide part 10-1 is filled with a perforated lath 202 with a row of hole type positioning notches 20-2 with a pitch of 1 cm.

When the size setting operation is carried out, the position of the ruler plate 30 is subjectively measured 601 by observing the size of the positioning backup plate, the separable primary positioning part 40-2 is spanned over the aluminum profile type guiding part 10-1 from top to bottom, and the pin type positioning unit 401-2 with the conical head is inserted into the hole type positioning notch 20-2 at the preset centimeter-sized position of the perforated lath 202, so that the centimeter-sized positioning operation is completed.

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment screw 50-4 to synchronously rotate and to slightly move along the axial direction, and simultaneously, the horizontal shaft swing type positioning backup plate 60-1 is driven to slightly move.

Because the two sections of threads of the fine adjustment screw 50-4 with the thread pitch of 2mm are opposite in rotation direction, the positioning backup plate 60-1 can move 4mm every time the fine adjustment screw 50-4 rotates one circle. When the fine adjustment knob 53 is rotated, the positioning backup plate moves by 0.5mm when the fine adjustment knob rotates by an elastic corner positioning angle. This fine tuning unit can be directly determined by observing the subjective positioning 601 of the positioning fence dimensions. That is, the rated minimum fine adjustment distance of the present embodiment is 0.5mm, which is very suitable for application in general carpentry.

The device can be adjusted in size by adjusting the fixed position of the perforated slat 202 when first installed.

The speed of the fine adjustment operation is high due to the adoption of the fine adjustment screw 50-4 with the reverse double-thread section.

Example 7 is shown in fig. 24 to 28. The guide portion of the present embodiment is constituted by a toothed sheet metal bent type perforated row guide portion 10-4 having a C-shaped cross section, which is joined to the rack plate and the blade plate 30. The guide 10-4 with the row of holes can be fixed on the work surface by means of the mounting holes 101. The separable primary positioning portion 40-2 is made of a customized aluminum profile having a predetermined open cavity slidably fitted with the guide portion 10-4 having the hole row in a clearance fit manner through a machining process.

The fine adjustment screw 50 passing through the hole cavity of the primary positioning portion 40-2 is screwed with the fine adjustment nut 51 of the hexagonal head, and the fine adjustment nut 51 is inserted into the fine adjustment nut sleeve 52 and is inserted into the fine adjustment nut installation notch 403 of the primary positioning portion 40-2 together in a clearance fit manner. The fine adjustment nut sleeve 52 has fine adjustment scale markings 55 on the cylindrical surface, and an elastic ball positioning counter bore 73 on the end surface. The corresponding position of the primary positioning part 40-2 is provided with a fine adjustment scale alignment marking line 56 and a special hole cavity for installing an elastic positioning ball 71, a spring 75 and a tightening screw plug 9-15. The shaft shoulder 503 at one end of the fine adjustment screw 50 is tightly connected with the inside of the swing shaft hole 606 of the horizontal shaft swing type positioning backup plate 60-1 through a fastening screw plug 95-2.

The pin-type positioning portion 401-2 with the pull handle 4010 is fitted into the vertical hole of the primary positioning portion 40-2 and maintains a downward pressing force under the restriction of the pressing spring 74-3 and the U-shaped stopper 96.

When the size setting operation is performed, the handle 4010 is lifted, the position of the positioning backup plate size subjective positioning part 601 on the ruler plate 30 is observed, the primary positioning part 40-2 is moved to a position which meets the preset size, the handle 4010 is placed down, the tooth-shaped positioning part 401-1 is inserted downwards into the hole-shaped positioning notch 20-2 at the specific position of the guide part 10-4 with the hole rows, and the centimeter-level positioning operation is completed.

Then, while observing the position of the fine adjustment scale mark line 55, the fine adjustment nut sleeve 52 is rotated to drive the fine adjustment screw 50 to synchronously rotate and to perform micro-motion displacement along the axial direction, and the transverse shaft swing type positioning backup plate 60-1 is driven to move to a millimeter-scale preset position, so that the size setting is completed.

When the device is installed for the first time, after the fastening screw plug 95-2 of the positioning backup plate is loosened, the size adjustment can be carried out by clamping and moving the tangent plane 87 of the fine adjustment screw 50, and the position of the guide part 10-4 can be adjusted to assist in the adjustment if necessary.

Example 8 is shown in fig. 29 to 31. The present embodiment is based on the same inventive concept and is applied to an angular sizing device. An arc-shaped array of vertical-axis hole-type positioning notches 20-2 with an angular distance of 5 DEG is provided on the radial surface of the sector rotary guide 10-6 which can swing around the rotary guide main shaft 102, and a primary size row 30-3 and a final size row 30-4 are arranged along the arc-shaped edge. The vertical shaft swinging type positioning backup plate 60-2 is fixedly connected with the sector swinging type guiding part 10-6.

A vertical shaft swinging type primary positioning part 40-4 which can swing around a swinging type guiding part main shaft 102 is arranged above the guiding part 10-6. The primary positioning part 40-4 is provided with a pin-type positioning part 401-2 which can be lifted and lowered by a handle 4010. When the pin-type positioning portion 401-2 is inserted downward into one of the hole-type positioning notches 20-2, the primary positioning portion 40-4 and the guiding portion 10-6 are locked to each other.

A rotary guide main shaft 102 is fixedly connected above the middle-rear portion of the final positioning portion 60. The final stage guide 60 may be slid into a matching sized groove of the table.

The front end shaft hole of the vertical shaft swinging type primary positioning part 40-4 is provided with a primary vertical shaft swinging type fine adjustment nut 51-1. The front end shaft hole of the final-stage positioning part 60 is provided with a final-stage vertical shaft rotary fine adjustment nut 51-2. The two fine adjustment nuts 51-1 and 51-2 have opposite screw directions and are respectively screwed and connected with the two reverse threads of the fine adjustment screw 50-4 with the reverse double thread sections. One end of a fine adjustment screw 50-4 with a reverse double-thread section, which penetrates out of the outer side of the final-stage vertical shaft rotary fine adjustment nut 51-2, is tightly connected with a fine adjustment knob 53 through a fastening screw plug 95. A fine adjustment scale alignment scale plate 57 is arranged between the fine adjustment knob 53 and the final-stage vertical shaft rotary fine adjustment nut 51-2. When the fine adjustment knob 53 rotates, the spring 75 and the elastic positioning ball 71 which are embedded in the inner end hole of the fine adjustment knob 53 can be sequentially and elastically clamped into 12 annular elastic ball positioning counter bores 73 which are uniformly distributed on the side end surface of the fine adjustment scale alignment scale wire disc 57. The fine adjustment scale alignment mark disc 57 is provided with a fine adjustment scale alignment mark line 56.

When the size setting operation is performed, the handle 4010 is pulled up, the primary positioner 40-4 is unlocked and swung, the primary positioner observation position 408 of the primary positioner 40-4 is aligned with the preset angular dimension position of 5 °, the handle is lowered, the primary positioner 40-4 is locked at the primary position in the primary dimension row 30-3, and the positioning operation of 5 ° is completed.

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment screw 50-4 to perform fine movement displacement along the axial direction, and the accurate setting of the 1 degree and smaller angular distance dimension is finally set by observing the angular position of the pointer of the final-stage positioning dimension observation position 603 in the final-stage dimension row 30-4 and the position state of the fine adjustment scale alignment mark 56 on the fine adjustment scale alignment mark disc 57 on the fine adjustment scale mark 55 on the fine adjustment knob.

In this embodiment, the distance between the vertical axis of the fine adjustment nut and the rotating shaft of the guide part is 172mm, and if the fine adjustment scale marks 55 of the fine adjustment knob are uniformly distributed, the angle error caused by the rotation of the straight thread is less than 0.02 degrees, which can meet the requirements of general processing operation.

Example 9 is shown in fig. 32 to 34. Referring to the drawings, a sector-shaped rotary guide 10-5, which is rotatable about a rotary guide main shaft 102, is provided on its cylindrical surface with an array of concentrically arranged horizontal axis hole-type positioning notches 20-2 at an angular pitch of 5 ° and arranged along an arcuate edge with a primary dimension row 30-3. The vertical shaft swinging type positioning backup plate 60-2 is fixedly connected with the sector swinging type guiding part 10-5.

A vertical shaft swinging type primary positioning part 40-4 which can swing around a swinging type guiding part main shaft 102 is arranged below the guiding part 10-5. The primary positioning portion 40-4 is provided with a pin-shaped positioning portion 401-2 which can be extended and retracted by a handle 4010. The pin-type positioning element 401-2 is limited and guided by a pin-type positioning element guide hole 409 fixedly installed on the primary positioning part 40-4, and is kept with elastic insertion force toward the hole-type positioning notch 20-2 by a pressing spring 74-3. When the pin-type positioning portion 401-2 is inserted forward into one of the hole-type positioning notches 20-2, the primary positioning portion 40-4 and the guiding portion 10-5 are locked to each other.

The front end of the vertical shaft swinging type primary positioning part 40-4 is fixedly provided with a fine adjustment fan-shaped worm wheel 51-5. A U-shaped vernier worm mount 605 is fixedly mounted to the front end of the final positioning portion 60. The fine tuning worm 50-5 arranged in the mounting seat 605 is connected with the fine tuning sector worm wheel 51-5 in a screwing way.

The fine adjustment worm mandrel 502 is arranged in the axial center through hole of the fine adjustment worm 50-5 through the chord section 87 and the tightening screw plug 95-2, and one end of the fine adjustment worm mandrel 502 is connected with the fine adjustment knob 53 through the tightening screw plug 95-1. The elastic positioning ball 71 supported by the spring 75-1 arranged on the fine adjustment worm mounting seat 605 and the elastic ball positioning counterbore 73-1 array of the fine adjustment knob 53 form an elastic auxiliary positioning function. A fine adjustment scale marking 55 on the fine adjustment knob 53 and a fine adjustment scale alignment marking 56 on the fine adjustment worm mount 605 form a fine adjustment measurement function.

The fine adjustment sector worm wheel 51-5 is provided with a final positioning size enlargement observation wheel 604 which can rotate along a vertical shaft. The transmission gear 6041 connected with the lower part of the observation wheel is meshed with the transmission rack 6042 arranged in the fine adjustment worm mounting seat 605. The two ends of the transmission rack 6042 can be adjusted in position by two rack-limiting adjusting bolts 98.

The bottom surface of the fan-shaped rotary guide part 10-5 is provided with an arc array of elastic ball positioning counter bores 73-2 at an angular distance of 5 degrees, and an elastic positioning ball 71 supported by a spring 75-2 is arranged in a vertical hole at a position corresponding to the primary positioning part 40-4, so that the functions of assisting in judging the rapid size setting of the primary positioning part 40-4 during rotation are mutually formed.

When the size setting operation is performed, the handle 4010 is pulled out, the primary positioning portion 40-4 is unlocked and swung, the primary positioning size observation position 408 of the primary positioning portion 40-4 is aligned with the preset angular size position of 5 degrees, the handle 4010 is released, the primary positioning portion 40-4 is locked at the primary position in the primary size row 30-3, and the positioning operation of 5 degrees is completed.

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment worm 50-5 to perform fine movement displacement along the axial direction, and the accurate setting of the 1 degree and smaller angular distance dimension is finally set by observing the angular position of the pointer of the final positioning dimension observation position 603 on the final positioning dimension enlargement mark 6031 arranged on the fine adjustment fan-shaped worm wheel 51-5 and the position state of the fine adjustment scale alignment mark 56 on the fine adjustment scale mark 55 on the fine adjustment knob.

When the device is assembled for the first time, in order to facilitate quick and accurate adjustment, the central symmetry center lines of the fan-shaped rotary guide part 10-5 and the final positioning part 60 are correspondingly provided with correction holes 99-1 and 99-2. During adjustment, cylinders with matched diameters can be inserted into the two correction holes, so that the center line of the final-stage positioning part 60 is accurately perpendicular to the working surface of the positioning backup plate 60-2, and then the rack 6042 and the fine adjustment knob 53 are adjusted, so that the corresponding marked lines are aligned to correct scales.

Compared with the fine adjustment screw rod adopted in the embodiment 8, the fine adjustment fan-shaped worm wheel and worm mechanism adopted in the embodiment can achieve more accurate size setting performance.

Example 10 is shown in fig. 35 to 38. Referring to the drawings, the arcuate edge of the scalloped sector rotary guide 10-7, which is rotatable about the rotary guide spindle 102, is provided with an array of concentrically disposed castellated locating notches 20-1 at an angular separation of 5 and arranged along the arcuate edge with a primary dimension row 30-3. The vertical shaft swinging type positioning backup plate 60-2 is fixedly connected with the guide part 10-7.

A vertical shaft swinging type primary positioning part 40-4 which can swing around a swinging type guiding part main shaft 102 is arranged below the guiding part 10-7. The upper slide groove of the primary positioning portion 40-4 is provided with a tooth-shaped positioning element substrate 406 with a slide base 4011, and the tooth-shaped positioning element substrate 406 is provided with 5 tooth-shaped positioning elements 401-1 having the same tooth shape as that of the guide portion 10-7. A pull-back handle 4012 is mounted on the upper portion of the positioning base plate 406. The tooth positioning base plate 406 continuously applies an elastic engaging force in the tooth row direction of the guide portion 10-7 by the tension spring 76. When the tooth-shaped positioning unit 401-1 is engaged with the tooth-shaped guide portion 10-7, the primary positioning portion 40-4 is locked with the guide portion 10-7.

The fine adjustment nut bottom sliding seat 511 is arranged at the front end of the sliding groove of the vertical shaft swinging type primary positioning part 40-4, and the fine adjustment nut bottom sliding seat 511 is connected with the bottom of the fine adjustment nut 51 by virtue of a vertical shaft.

A U-shaped fine adjustment screw mounting seat 607 is fixedly mounted at the front end of the final positioning portion 60. The fine adjustment screw 50 installed in the mounting seat 607 is screwed with the fine adjustment nut 51.

The fine adjustment screw mandrel 504 is loaded into the axial center through hole of the fine adjustment screw 50 by means of the chord section 87 and the tightening screw plug 95-2, and one end of the fine adjustment screw mandrel 504 is connected with the fine adjustment knob 53 by means of the tightening screw plug 95-1. The elastic positioning balls 71 supported by the springs 75 mounted on the fine adjustment screw mounting seat 607 and the elastic ball positioning counter bores 73 array of the fine adjustment knob 53 form an elastic auxiliary positioning function. The fine adjustment scale markings 55 on the fine adjustment knob 53 and the fine adjustment scale alignment markings 56 on the fine adjustment worm mounting block 607 form a fine adjustment measurement function.

When the size setting operation is performed, the handle 4012 is pulled back, the primary positioning portion 40-4 is unlocked and swung, the primary positioning size observation position 408 of the primary positioning portion 40-4 is aligned with the preset angle size position of 5 degrees, the handle 4012 is released, the primary positioning portion 40-4 is locked at the primary position in the primary size row 30-3, and the positioning operation of 5 degrees is completed.

Then, the fine adjustment knob 53 is rotated to drive the fine adjustment screw 50 to perform fine movement displacement along the axial direction, and the 1-degree accurate size setting is finally set by observing the position state of the fine adjustment scale alignment mark line 56 on the fine adjustment knob on the fine adjustment scale mark line 55.

Like embodiment 9, this embodiment is also provided with the correction holes 99-1, 99-2.

Example 11 is shown in fig. 39 to 42. The present embodiment is based on the same inventive concept, and uses a cam mechanism as an application example of the fine adjustment mechanism. This embodiment also employs an aluminum profile type guide portion 10-1 equipped with a scale plate 30.

A perforated strip 202 with hole-type positioning notches 20-2 with a pitch of 1cm penetrates into the upper middle cavity of the aluminum profile type guide portion 10-1.

The lower middle cavity of the final-stage positioning part 60 processed by aluminum section is provided with a separable primary positioning part 40-2. 5 vertical pin-type positioning units 401-2 are arranged below the separable primary positioning part 40-2. The left side surface of the final-stage positioning part 60 is fixedly connected with a fixed positioning backup plate 60-3 by a hexagon socket head cap screw 77-1.

A fine adjustment cam 58 rotatable within 330 ° is mounted directly above the final positioning portion 60, and a cam main shaft 43 is inserted into a central hole directly above the final positioning portion 60 and is fixedly connected to the final positioning portion 60 by means of an elastic cylindrical pin 97. The fine adjustment cam 58 is provided with a fine adjustment scale marking 55 on the top surface, and the cam main shaft 43 is provided with a fine adjustment scale alignment marking 56 on the top surface.

A cam follower slide shaft bearing 42 slidable in the cam slide groove 44 of the trimming cam 58 is mounted on top of the primary positioning portion 40-2 via a cam follower slide shaft 41. When the trimming cam 58 rotates, the primary positioning portion 40-2 is driven to slightly displace along the guiding portion 10-1.

The side edge of the top cover of the cam main shaft 43 is provided with a spring 72 and an elastic positioning ball 71 which are arranged in the radial direction, and the corresponding periphery in the concave cavity at the top of the fine adjustment cam 58 is provided with a fine adjustment positioning concave strip 531 according to the corresponding position of the scale mark, so that the elastic auxiliary positioning function is formed.

The outer side surface of the positioning backup plate 60-3 is used as a working surface for size positioning and is used as a positioning backup of a machined part.

When the size setting operation is carried out, the whole positioning assembly is placed downwards according to the observed position of the positioning backup plate 60-3 relative to the ruler plate 30, so that the positioning backup plate straddles at the preset position of the guide part 10-1, the pin type positioning unit 401-2 is inserted downwards into the hole type positioning notch 20-2, and the centimeter-level primary size setting is completed.

Then, according to the size requirement, the fine adjustment cam 58 is rotated to the position corresponding to the size marking line to drive the positioning backup plate 60-3 to be slightly shifted to the correct position along the guide part 10-1, and the size setting operation is completed. Compared with a screw-nut mechanism, the cam mechanism of the present embodiment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.

Claims

1. Size setting device that can finely tune, characterized by:

a) comprises a guide part and a guide part, wherein,

2. The fine-tunable sizing device as recited in claim 1, further comprising:

a) the guide part is provided with a circular arc-shaped guide path,

3. The finely adjustable sizing device according to claim 1 or 2, wherein:

4. The fine-tunable sizing device as recited in claim 3, further comprising:

5. The fine-tunable sizing device as recited in claim 4, further comprising:

a) the fine tuning screw hole is arranged on the primary positioning part,

b) the fine adjustment screw rod forms the final-stage positioning part.

6. The finely adjustable sizing device according to claim 1 or 2, wherein:

a) the fine adjustment mechanism includes a cam and a follower that act on the primary detent and the final detent,

b) the fine adjustment mechanism comprises a knob which can drive the cam to rotate.

7. The fine-tunable sizing device as recited in claim 1, further comprising: