CN112123019B

CN112123019B - Offset type edge finder

Info

Publication number: CN112123019B
Application number: CN202010982308.6A
Authority: CN
Inventors: 魏心礼
Original assignee: Foshan Shunde Zhilei Mould Co ltd
Current assignee: Foshan Mingxiang Automation Technology Co.,Ltd.
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2022-07-01
Anticipated expiration: 2040-09-17
Also published as: CN112123019A

Abstract

The invention relates to the field of machine tool workpiece machining accessories and discloses an offset edge finder which comprises an upper positioning head, wherein the top of the upper positioning head is fixedly connected with a positioning insertion shaft, the bottom of the upper positioning head is fixedly connected with an upper annular plate and a lower annular plate, the upper annular plate is positioned right above the lower annular plate, a middle rotating plate is movably sleeved between the upper annular plate and the lower annular plate, the middle part of the middle rotating plate is provided with a linkage shaft capable of moving longitudinally, and the bottom end of the linkage shaft is fixedly connected with a lower positioning head. This limit ware is sought to offset formula, through last location head and the structural design of the last crown plate between the location head down and the lower crown plate, the mode that utilizes down the location head rotatory when locating the head central point department of putting is confirmed, has more made things convenient for operating personnel's the precision of differentiateing, has improved work efficiency, and ensures that the survey result accuracy is high to the machining precision of work piece improves with the later stage forcefully.

Description

Offset type edge finder

Technical Field

The invention relates to the field of machine tool workpiece machining accessories, in particular to an offset edge finder.

Background

The edge finder is a tool capable of quickly and easily setting the precise central position of a mechanical main shaft and a reference surface of a processed object, is commonly used for determining the position of a machine tool workpiece before processing, and has the structure as follows: the eccentric positioning device is formed by combining hollow upper positioning heads, hollow lower positioning heads, hollow springs of the clamping parts and the eccentric parts, top covers and hollow bottom covers, wherein the top covers and the bottom covers can respectively hook and fix the springs and are embedded at the top ends and the bottom ends of the upper positioning heads and the lower positioning heads.

However, the existing edge finder determines the data parameters of the mechanical main shaft and the X, Y axis of the machined object reference surface by observing whether the upper positioning head and the lower positioning head are flush in the vertical state or not in the using process, so that the operator needs to carefully observe, the time is wasted, the efficiency is not high, the existing upper positioning head and the lower positioning head are directly connected through the spring, the eccentric rotation of the lower positioning head relative to the upper positioning head is unstable, the error of the measuring result is larger, and the working efficiency of the edge finder is influenced, and meanwhile, the subsequent machining precision of a worker is not high.

Disclosure of Invention

The invention provides an offset edge finder, which has the advantage of being convenient for quickly determining an accurate measuring structure and solves the technical problems in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: an offset edge finder comprises an upper positioning head, wherein the top of the upper positioning head is fixedly connected with a positioning insertion shaft, the bottom of the upper positioning head is fixedly connected with an upper annular plate and a lower annular plate, the upper annular plate is positioned right above the lower annular plate, a middle rotating plate is movably sleeved between the upper annular plate and the lower annular plate, the middle part of the middle rotating plate is provided with a linkage shaft capable of longitudinally moving, the bottom end of the linkage shaft is fixedly connected with a lower positioning head, a certain gap is reserved between the linkage shaft and the inner sides of the upper annular plate and the lower annular plate, the radius value of the middle rotating plate is larger than the distance value between the linkage shaft and the inner sides of the upper annular plate or the lower annular plate, a spring movably sleeved on the linkage shaft is arranged between the middle rotating plate and a limiting circular platform block, the bottom of an inner cavity of the upper positioning head is fixedly sleeved with a limiting block positioned above the limiting circular platform block, and the bottom of the limiting block is provided with a conical groove, and the inclined plane of the conical groove is matched with the inclined plane of the limiting circular table block, when the inclined plane of the limiting circular table block is completely attached to the conical groove of the limiting block, the top of the lower positioning head is contacted with the bottom of the lower ring plate, a bearing is fixedly sleeved in the middle of the inner cavity of the lower positioning head, a driven block is fixedly sleeved on the inner ring of the bearing, and the bottom end of the linkage shaft is in threaded sleeve connection with the top of the driven block.

Optionally, the upper ring plate and the lower ring plate have the same shape and size, the upper ring plate and the lower ring plate are fixedly connected to form a limiting shaft, the limiting shaft is not in contact with the outer side of the middle rotating plate, and the bottom of the upper ring plate and the top of the lower ring plate are movably connected to the top and the bottom of the middle rotating plate respectively.

Optionally, the outer edge of the lower ring plate is movably sleeved with a plurality of symmetrically distributed positioning bolts, and the top ends of the positioning bolts sequentially penetrate through the outer edges of the bottoms of the upper ring plate and the upper positioning head and are in threaded sleeve connection with limiting nuts.

Optionally, the two sides of the bottom of the lower annular plate are both provided with limiting grooves, the outer edges of the top of the lower positioning head are fixedly connected with clamping heads matched with the limiting grooves, and the distance between the two limiting grooves and the two clamping heads is the same.

Optionally, the middle part of the middle rotating plate is fixedly sleeved with a limiting sleeve, the limiting sleeve is movably sleeved with the linkage shaft, bearings are movably sleeved on the outer sides of the top and the bottom of the limiting sleeve respectively, and the two bearings correspond to the inner sides of the upper annular plate and the lower annular plate respectively.

Optionally, the bottom of the limiting circular table block is fixedly connected with a threaded sleeve, and the threaded sleeve is in threaded sleeve connection with the top end of the linkage shaft.

The invention provides an offset edge finder, which has the following beneficial effects:

according to the offset edge finder, through the structural design of the upper annular plate and the lower annular plate between the upper positioning head and the lower positioning head, the lower positioning head is determined in a rotating mode when the lower positioning head is positioned at the central position of the upper positioning head, so that the distinguishing accuracy of operators is facilitated, and further the later-stage workpiece processing accuracy is guaranteed; the upper ring plate and the lower ring plate limit the middle rotating plate, so that the rotation of the upper positioning head, the rotation and the stillness of the lower positioning head can be kept stable, and the problems that the lower positioning head is unstable in eccentric rotation relative to the upper positioning head due to the fact that the upper positioning head and the lower positioning head are directly connected through a spring, the error of a measuring result is large, the working efficiency of the edge finder is affected, and the subsequent machining precision of a worker is low are solved.

Drawings

FIG. 1 is a schematic diagram of the positioning result of the edge finder according to the present invention;

FIG. 2 is a schematic view of the deflection of the edge finder during the measurement process of the present invention;

FIG. 3 is a schematic view of an intermediate rotating plate of the structure of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 according to the present invention.

In the figure: 1. an upper positioning head; 2. positioning the inserted shaft; 3. an upper ring plate; 4. a lower ring plate; 401. a limiting groove; 402. positioning the bolt; 403. defining an axis; 5. a lower positioning head; 501. clamping a head; 6. a bearing; 7. a passive block; 8. a linkage shaft; 9. a limiting circular table block; 10. a spring; 11. a limiting block; 12. a middle rotating plate; 13. a limiting sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an offset edge finder comprises an upper positioning head 1, a positioning insertion shaft 2 fixedly connected to the top of the upper positioning head 1, an upper annular plate 3 and a lower annular plate 4 fixedly connected to the bottom of the upper positioning head 1, the upper annular plate 3 being located right above the lower annular plate 4, a middle rotating plate 12 movably sleeved between the upper annular plate 3 and the lower annular plate 4, a linkage shaft 8 capable of moving longitudinally arranged in the middle of the middle rotating plate 12, a lower positioning head 5 fixedly connected to the bottom end of the linkage shaft 8, a certain gap reserved between the linkage shaft 8 and the inner sides of the upper annular plate 3 and the lower annular plate 4, a radius value of the middle rotating plate 12 being greater than a distance value between the linkage shaft 8 and the upper annular plate 3 or the inner side of the lower annular plate 4, a spring 10 movably sleeved on the linkage shaft 8 arranged between the middle rotating plate 12 and a limiting circular block 9, a limiting block 11 located above the limiting circular block 9 fixedly sleeved at the bottom of the inner cavity of the upper positioning head 1, the bottom of the limiting block 11 is provided with a conical groove, the inclined plane of the conical groove is matched with the inclined plane of the limiting circular truncated cone block 9, when the inclined plane of the limiting circular truncated cone block 9 is completely attached to the conical groove of the limiting block 11, the top of the lower positioning head 5 is contacted with the bottom of the lower annular plate 4, the middle part of the inner cavity of the lower positioning head 5 is fixedly sleeved with a bearing 6, the inner ring of the bearing 6 is fixedly sleeved with a driven block 7, the bottom end of the linkage shaft 8 is sleeved with the top thread of the driven block 7, the upper positioning head 1 is fixed on a rotating shaft of a machine tool for low-speed rotation through the positioning insertion shaft 2, at the moment, the upper annular plate 3 and the lower annular plate 4 rotate along with the upper positioning head 1, the middle rotating plate 12, the linkage shaft 8, the driven block 7, the lower positioning head 5 and the bearing 6 do not rotate, the middle rotating plate 12 does eccentric rotation between the upper annular plate 3 and the lower annular plate 4, thereby driving the lower positioning head 5 to do eccentric rotation around the central axis of the upper positioning head 1, and the conical groove in the limiting block 11 limits the limiting circular truncated cone block 9, so that the bearing 6 is completely separated from the lower ring plate 4, after the lower positioning head 5 is attached to the workpiece to be measured, along with continuous attachment, the lower positioning head 5, the linkage shaft 8, the middle rotating plate 12 and the limiting circular truncated cone block 9 integrally move upwards along the central axis of the upper positioning head 1 under the action of centripetal pressure of the workpiece on the lower positioning head 5 and the elastic force of the spring 10 until the centers of the lower positioning head 5, the linkage shaft 8, the middle rotating plate 12 and the limiting circular truncated cone block 9 move to the central axis of the upper positioning head 1, at the moment, the bearing 6 is completely attached to the lower ring plate 4, and when the bearing 6 rotates and keeps under the limiting of the lower ring plate 4 on the bearing 6, similarly, Y-axis data can be obtained in the plane Y-axis, so that the workpiece can be determined in the machining center of X, Y plane, compare in present offset type seek limit ware through observing first 1, whether lower locating head 5 flushes and confirms X or Y axle's survey numerical value, the locating head is rotatory when last locating head central point department is confirmed down in the utilization, has more made things convenient for the precision of operating personnel's differentiation, and then has ensured the precision of later stage work piece processing, and has avoided present first 1, directly through spring coupling between the lower locating head 5, lead to locating head 5 to go up locating head 1 eccentric rotation unstability relatively, influence the problem of seeking limit ware work efficiency.

The upper ring plate 3 and the lower ring plate 4 are identical in shape and size, the upper ring plate 3 and the lower ring plate 4 are fixedly connected with each other to form a limiting shaft 403, the limiting shaft 403 is not in contact with the outer side of the middle rotating plate 12, the bottom of the upper ring plate 3 and the top of the lower ring plate 4 are respectively in movable connection with the top and the bottom of the middle rotating plate 12, the upper ring plate 3 and the lower ring plate 4 are stably connected through the limiting shaft 403, the middle rotating plate 12 is stably limited by the upper ring plate 3 and the lower ring plate 4, and the middle rotating plate 12 is stably eccentrically rotated around the central axis of the upper positioning head 1 between the upper ring plate 3 and the lower ring plate 4.

The outer edge of the lower ring plate 4 is movably sleeved with a plurality of symmetrically distributed positioning bolts 402, the top ends of the positioning bolts 402 sequentially penetrate through the upper ring plate 3, the outer edge of the bottom of the upper positioning head 1 is sleeved with a limiting nut in a threaded manner, the upper ring plate 3, the lower ring plate 4 and the upper positioning head 1 are fixed together through the positioning bolts 402 and the nuts, so that the upper ring plate 3 and the lower ring plate 4 rotate along with the lower ring plate 4 during working, and the measurement value of the workpiece X, Y shaft can be visually and accurately determined according to the limitation of the lower ring plate 4 to the bearing 6.

Wherein, spacing groove 401 has all been seted up to the both sides of lower crown plate 4 bottom, the outer dop 501 along fixedly connected with spacing groove 401 looks adaptation at the top of lower positioning head 5, and two spacing grooves 401 are the same with two dop 501's spacing value, when bearing 6 is under the work piece is spacing, move towards the axis of last positioning head 1 just, lower positioning head 5 moves up makes dop 501 and spacing groove 401 joint just, thereby make lower positioning head 5 rotatory and keep the same rotational speed with lower crown plate 4, thereby made things convenient for constructor directly perceived, accurate definite work piece X, Y axle's measured value.

Wherein, the fixed cover in middle part of middle rotor plate 12 is equipped with stop collar 13, stop collar 13 and universal driving shaft 8 activity cup joint, the equal movable sleeve in outside at stop collar 13 top and bottom is equipped with the bearing, and two bearings correspond with the inboard of upper ring plate 3 and lower ring plate 4 respectively for middle rotor plate 12 makes eccentric rotation all the time in the inside groove of upper ring plate 3, lower ring plate 4, and the inner wall of upper ring plate 3, lower ring plate 4 reduces to the frictional resistance of middle rotor plate 12, thereby ensures middle rotor plate 12, universal driving shaft 8, the holistic eccentric rotation of lower locating head 5.

Wherein, the bottom fixedly connected with thread bush of spacing round platform piece 9, thread bush and the top screw thread of universal driving shaft 8 cup joint, made things convenient for later stage dismantlement and adjusted the height of spacing round platform piece 9 to compensate the frictional loss of spacing round platform piece 9 and stopper 11, thereby be convenient for seek long-term effectual use of limit ware.

When the positioning and inserting device works, firstly, the positioning and inserting shaft 2 fixes the upper positioning head 1 on a rotating shaft of a machine tool to rotate at a low speed, at the same time, the upper ring plate 3 and the lower ring plate 4 rotate along with the upper positioning head 1, the middle rotating plate 12, the linkage shaft 8, the passive block 7, the lower positioning head 5 and the bearing 6 do not rotate, the middle rotating plate 12 eccentrically rotates between the upper ring plate 3 and the lower ring plate 4 to drive the lower positioning head 5 to eccentrically rotate around the central axis of the upper positioning head 1, the limiting circular table block 9 is limited by a conical groove in the limiting block 11, the bearing 6 is completely separated from the lower ring plate 4, the upper positioning head 1 is controlled to integrally move towards the lower positioning head 5 of a workpiece along the X axis in a plane X axis, the lower positioning head 5 is enabled to contact the workpiece, the lower positioning head 5 is continuously attached to the workpiece under the centripetal pressure of the workpiece to the lower positioning head 5 and the elastic force of the spring 10, the lower positioning head 5, the linkage shaft 8, the middle rotating plate 12 and the limiting circular truncated cone block 9 are enabled to move upwards integrally, and the central axis of the upper positioning head 1 moves until the centers of the lower positioning head 5, the linkage shaft 8, the middle rotating plate 12 and the limiting circular truncated cone block 9 move to the central axis of the upper positioning head 1, at the moment, the bearing 6 is just completely attached to the lower annular plate 4, and under the limitation of the lower annular plate 4 to the bearing 6, when the bearing 6 rotates and is kept, the Y-axis data can be obtained in the plane Y axis, so that the workpiece can be determined at the machining center of the XY plane conveniently.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an offset type seeks limit ware, includes location head (1), goes up the top fixedly connected with location of location head (1) and inserts axle (2), its characterized in that: go up last crown plate (3), lower crown plate (4) of the bottom fixedly connected with of location head (1), and go up crown plate (3) and be located lower crown plate (4) directly over, movable sleeve is equipped with middle commentaries on classics board (12) between last crown plate (3) and lower crown plate (4), the middle part of middle commentaries on classics board (12) is equipped with linkage shaft (8) that can longitudinal movement, location head (5) under the bottom fixedly connected with of linkage shaft (8), the inboard reservation of linkage shaft (8) and upper crown plate (3), lower crown plate (4) has certain clearance, and the radius value of middle commentaries on classics board (12) is greater than the interval value of linkage shaft (8) and upper crown plate (3) or lower crown plate (4) inboard, be equipped with spring (10) of suit on activity linkage shaft (8) between middle commentaries on classics board (12) and spacing round platform piece (9), go up the fixed cover in bottom of location head (1) inner chamber and be equipped with stopper (11) that are located spacing round platform piece (9) top, the bell jar has been seted up to the bottom of stopper (11), and the inclined plane of bell jar and the inclined plane looks adaptation of spacing round platform piece (9), and when the inclined plane of spacing round platform piece (9) and the bell jar of stopper (11) laminated completely, the top of lower location head (5) and the bottom contact of lower crown plate (4), the fixed cover in middle part of lower location head (5) inner chamber is equipped with bearing (6), and the fixed cover of inner circle of bearing (6) is equipped with passive piece (7), the bottom of universal driving shaft (8) and the top screw thread of passive piece (7) cup joint.

2. An offset edge finder as claimed in claim 1, wherein: the shape and size of the upper annular plate (3) and the lower annular plate (4) are the same, a limit shaft (403) is fixedly connected between the upper annular plate (3) and the lower annular plate (4), the limit shaft (403) is not in contact with the outer side of the middle rotating plate (12), and the bottom of the upper annular plate (3) and the top of the lower annular plate (4) are movably connected with the top and the bottom of the middle rotating plate (12) respectively.

3. An offset edge finder as claimed in claim 1, wherein: the outer edge of the lower annular plate (4) is movably sleeved with a plurality of symmetrically distributed positioning bolts (402), and the top ends of the positioning bolts (402) sequentially penetrate through the outer edges of the bottoms of the upper annular plate (3) and the upper positioning head (1) and are in threaded sleeve connection with limiting nuts.

4. An offset edge finder as claimed in claim 1, wherein: spacing groove (401) have all been seted up to the both sides of lower crown plate (4) bottom, along dop (501) of fixedly connected with and spacing groove (401) looks adaptation outside lower locating head (5) top, and the interval value of two spacing grooves (401) and two dops (501) is the same.

5. An offset edge finder as claimed in claim 1, wherein: the middle part of the middle rotating plate (12) is fixedly sleeved with a limiting sleeve (13), the limiting sleeve (13) is movably sleeved with the linkage shaft (8), bearings are movably sleeved on the top and the bottom of the limiting sleeve (13), and the two bearings correspond to the inner sides of the upper annular plate (3) and the lower annular plate (4) respectively.

6. An offset edge finder as claimed in claim 1, wherein: the bottom of the limiting circular table block (9) is fixedly connected with a threaded sleeve, and the threaded sleeve is in threaded sleeve connection with the top end of the linkage shaft (8).