CN117288071A

CN117288071A - Guide rail straightness measurement tool

Info

Publication number: CN117288071A
Application number: CN202311244495.8A
Authority: CN
Inventors: 刘星明; 刘轩烨; 刘士孔; 赛志尚
Original assignee: Yiteli Chuzhou Intelligent Numerical Control Technology Co ltd
Current assignee: Yiteli Chuzhou Intelligent Numerical Control Technology Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-12-26

Abstract

The invention discloses a guide rail straightness measuring tool, which comprises: the L-shaped base is divided into a horizontal part and a vertical part according to the structure, and a transverse base piece and a vertical base piece are arranged in the horizontal part and the vertical part; the movable placing seat is arranged on the horizontal part and is in parallel sliding arrangement relative to the transverse base member; and fixing the assembly. According to the guide rail straightness measuring tool provided by the invention, the horizontal part and the vertical part of the L-shaped base are respectively provided with the transverse base and the vertical base, the straight line reference surfaces of the horizontal part and the transverse base are parallel to the guide rail of the machine tool through the vertical part, the gauge stand of the measuring dial indicator can be arranged in the second mounting groove to be abutted against the straight line reference surface, the tool is mounted on the sliding block through the fixing component, and then the straightness measurement can be performed by mounting the measuring dial indicator on the tool, so that a leveling rule and a fixing clamp are not required to be additionally used, the operation flow is simplified, the measuring error caused by repeated fixing is reduced, and the detection efficiency is improved.

Description

Guide rail straightness measurement tool

Technical Field

The invention relates to the technical field of machine tool measuring equipment, in particular to a guide rail straightness measuring tool.

Background

The guide rail is one of important moving parts of the machine tool, and ensures that the moving parts can accurately move along a given direction under the action of external force (the weight of the moving parts, the weight of a workpiece, the cutting force, the traction force and the like). Thus, the guide rail is a key to ensure the accuracy of the movement of the table. Among the quality indexes of the guide rail, the guiding precision is the primary index. The guiding precision refers to the straightness of the linear motion guide rail and the roundness of the circular motion guide rail when the motion guide rail moves along the supporting guide rail, and the accuracy of the mutual positions of the guide rail and other motion parts, and the main factors influencing the guiding precision are the geometric precision of the guide rail, the contact precision of the guide rail, the structural form of the guide rail, the structural rigidity and thermal deformation of the guide rail and the base part, and the like. Among these factors, the accuracy of the straightness of the guide rail plays a role of importance. The straightness of the guide rail has great influence on the machining precision of the machine tool, so that the precision measurement is required after the machine tool leaves a factory and is repaired so as to achieve the required precision.

The existing machine tool is often provided with two guide rails, when the linear pair measurement is carried out on the guide rails, a flat ruler pulling method is often adopted, specifically, a flat ruler is erected on the side face of the guide rail to be measured, the flat ruler is adjusted to be parallel to the guide rail to be measured, and even though readings of the dial indicators at two ends of the flat ruler are equal. And then longitudinally moving the dial indicator along the tested guide rail, reading the dial indicator once every 200mm distance in the moving process, and recording. Then, the maximum algebraic difference of the readings of the dial indicators is the straightness error of the measured guide rail over the whole length of the guide rail.

Among the above-mentioned prior art, adopt the flat ruler to be parallel with the guide rail that awaits measuring back as straight line datum plane, additionally use the flat ruler to carry out contact measurement, after setting up table seat and percentage table, still need carry out extra fixed and avoid its activity to produce the error to the flat ruler, and the operation is complicated, is unfavorable for using.

Disclosure of Invention

The invention aims to provide a guide rail straightness measuring tool which is used for solving the problems that when the straightness is measured by a flat ruler pull meter method, an additional fixing is needed to be carried out on a flat ruler so as to avoid errors caused by movement of the flat ruler, and the guide rail straightness measuring tool is complex in operation and unfavorable for use.

In order to achieve the above object, the present invention provides the following technical solutions: guide rail straightness accuracy measurement frock includes:

the L-shaped base is divided into a horizontal part and a vertical part according to the structure, wherein a transverse base piece and a vertical base piece are respectively and parallelly arranged in the horizontal part and the vertical part, and the transverse base piece and the vertical base piece are vertically locked;

the movable placing seat is arranged on the horizontal part and is arranged in parallel and sliding mode relative to the transverse base piece, and a second mounting groove penetrating through a straight line datum plane facing the transverse base piece is formed in the movable placing seat;

and the fixing assembly is used for fixing the L-shaped base to the sliding block.

Preferably, the locking device further comprises a locking piece, wherein the columnar connecting part arranged on the transverse base piece penetrates through the connecting hole of the vertical base piece and stretches out, a locking component is arranged in the vertical base piece and comprises a sliding seat and a locking piece arranged on the sliding seat, and the locking piece is in threaded connection with the columnar connecting part to drive the sliding seat to slide so that the locking piece is embedded into a locking groove formed in the columnar connecting part.

Preferably, the air bag is arranged in the vertical base member so that the end part is positioned at the front side of the connecting hole in a default state, a conical transition part is arranged between the columnar connecting part and the transverse base member, and the air bag is extruded by the sliding seat in a sliding way, and the end part of the air bag expands to abut against the locking transition part.

Preferably, the device further comprises a secondary vertical auxiliary piece, wherein a matching groove is formed in the secondary vertical auxiliary piece, and the secondary vertical auxiliary piece is vertically arranged on one side, close to the end part, of the horizontal part so that the matching groove is sleeved on the transverse base piece.

Preferably, the distance from the side surface of the matching groove to the upper end of the secondary vertical auxiliary piece is a, the distance from the linear reference surface to the axis of the columnar connecting part is b, and the distance from the axis of the connecting hole of the vertical base piece to the upper end of the vertical base piece is c, wherein: a+b=c.

As preferred, fixed subassembly includes magnetic part, contact seat and copper layer, be provided with contact portion on the vertical base member, contact portion, copper layer and contact seat connect gradually with inside surrounding formation circular inner chamber, and copper layer separates contact seat and contact portion, the magnetic part rotates to set up in circular inner chamber so that contact seat's first side is the magnetism and inhale the face, the magnetic part has following two stations:

a demagnetizing station, wherein both ends of the magnetic piece simultaneously contact the contact part, the copper layer and the contact seat;

and the two ends of the magnetic piece respectively abut against the contact seat and the contact part.

Preferably, the contact part is provided with a vertical extension part, the first side surface of the vertical extension part is a vertical reference surface, and the vertical extension part is provided with a scraping plate extending back to the vertical base part.

Preferably, the locking piece is rotatably arranged on the sliding seat, and a permanent magnet piece is arranged in the locking groove to drive the magnetized locking piece to deflect and press against the locking groove in a splayed shape.

Preferably, the vertical base member and the L-shaped base are provided with observation holes, the locking groove is provided with a through transverse hole coaxial with the observation holes, and the locking member deflects to be splayed and shields the through transverse hole by the end part.

Preferably, the locking assembly further comprises a movable ring and an elastic piece, wherein the movable ring is axially arranged on the vertical base member in a sliding mode, the first end of the movable ring is arranged on the inclined sliding guide surface of the sliding seat in a sliding mode, and the elastic piece is used for driving the movable ring to extend out of the outer side of the vertical base member in a sliding mode to reset.

In the technical scheme, the guide rail straightness measuring tool provided by the invention has the following beneficial effects: the horizontal part and the vertical part of the L-shaped base are respectively provided with a transverse base part and a vertical base part, the vertical part is fixed on a guide rail sliding block of the machine tool by the fixing component, at the moment, the straight line reference surfaces of the horizontal part and the transverse base part are parallel to the guide rail of the machine tool by the vertical part, a gauge stand of the measuring dial indicator can be arranged in a second mounting groove to be abutted against the straight line reference surface, a gauge head of the measuring dial indicator is abutted against the guide rail of the machine tool, the movable placing seat is driven to slide to abut against the presumption of the straightness of the measuring dial indicator along the straight line reference surface, the measuring dial indicator only needs to be installed on the sliding block by the fixing component, then the measuring dial indicator is installed on the tool to be measured for straightness, a leveling rule and a fixing clamp are not needed to be additionally used, the operation flow is simplified, the measuring error caused by repeated fixing is reduced, the detecting efficiency is improved, the sliding block of the guide rail drives the tool to be moved generally so that the gauge head of the measuring dial indicator can be abutted against different sections of the guide rail, and further the measuring accuracy is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic view of the overall structure provided by an embodiment of the present invention;

FIG. 2 is a schematic view of a general cross-section of a structure provided by an embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view of a vertical base member and a horizontal base member provided by an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a general structure provided in an embodiment of the present invention;

FIG. 5 is a schematic view of the portion at A according to an embodiment of the present invention;

FIG. 6 is a schematic view of a portion at B according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a tool according to an embodiment of the present invention when measuring parallelism of a guide rail;

fig. 8 is a schematic diagram of a tool according to an embodiment of the present invention when measuring straightness of a guide rail;

fig. 9 is a schematic diagram of a tooling provided by the embodiment of the invention when a dial indicator is installed on the tooling for measuring parallelism.

Reference numerals illustrate:

11. an L-shaped base; 111. a horizontal portion; 1111. a first mounting portion; 1112. a sliding groove; 112. a vertical portion; 12. a movable placement seat; 121. a second mounting groove; 122. a third mounting groove; 21. a vertical base; 211. a connection hole; 212. a contact portion; 213. a vertical extension; 22. a transverse base member; 221. a straight line reference surface; 222. a columnar connection portion; 2221. a locking groove; 2222. penetrating through the transverse hole; 223. a transition section; 2231. a collision groove; 23. a locking piece; 24. a secondary vertical aid; 241. a mating groove; 31. a locking member; 32. a movable ring; 33. a sliding seat; 331. an extrusion part; 34. an elastic member; 4. an air bag member; 5. a fixing assembly; 51. a magnetic member; 511. a rotating handle; 52. a contact layer; 53. a contact base; 54. a copper layer; 6. cutting and rubbing the plate; 7. an observation hole; 8. permanent magnet pieces.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

As shown in fig. 1-9, a guide rail straightness measurement tool includes:

the L-shaped base 11 is divided into a horizontal part 111 and a vertical part 112 according to the structure, wherein a transverse base piece 22 and a vertical base piece 21 are respectively and parallelly arranged in the horizontal part 111 and the vertical part 112, and the transverse base piece 22 and the vertical base piece 21 are vertically locked;

the movable placement seat 12 is arranged on the horizontal part 111 in a parallel sliding manner relative to the transverse base 22, and a second mounting groove 121 penetrating through a straight line reference surface 221 facing the transverse base 22 is formed in the movable placement seat 12;

a fixing assembly 5 for fixing the L-shaped base 11 to the slider.

Specifically, as shown in fig. 1, the horizontal portion of the L-shaped base 11 is a horizontal portion 111, the vertical portion is a vertical portion 112, the horizontal base 22 is installed and arranged in the horizontal portion 111 and is parallel to the horizontal portion 111, the vertical base 21 is installed and arranged in the vertical portion 112 and is parallel to the vertical portion 112, as shown in fig. 2, a sliding groove 1112 parallel to the horizontal portion 111 is formed in the horizontal portion 111, the movable placement seat 12 is slidably arranged in the sliding groove 1112, as shown in fig. 3, a linear datum plane 221 is arranged on the horizontal base 22, the linear datum plane 221 is used as a datum plane, when the straightness of the guide rail needs to be measured, as shown in fig. 8, two machine tool guide rails and a driving screw are usually arranged on the machine tool, the horizontal portion 111 of the L-shaped base 11 is parallel to the guide rail, a gauge stand of the L-shaped base can be arranged in the second installation groove 121 so as to be abutted against the linear datum plane 221, the gauge stand of the L-shaped base can be abutted against the guide rail, the straightness of the gauge stand to be measured by the tool can be further pushed by the movable placement seat 12, and the straightness of the gauge stand can be further moved along the guide rail can be further estimated, and the straightness accuracy of the tool can be further improved by the tool can be further measured by the aid of the tool to be further being fixedly arranged on the guide rail. And moreover, a leveling rod and a fixing clamp are not required to be additionally used, so that the operation flow is simplified, the measurement error caused by repeated fixing is reduced, and the detection efficiency is improved.

The transverse base member 22 and the vertical base member 21 may be locked vertically by providing a protruding portion and an embedding groove, or may be locked vertically by providing coaxial threaded holes in both the two, and installing the two through the threaded holes by bolts, so that the transverse base member 22 and the vertical base member 21 are locked vertically, or may be replaced by other structures known to those skilled in the art that enable the transverse base member 22 and the vertical base member 21 to be locked vertically.

The fixing component 5 may be a bolt component for fixing the tool assembly to the slide block through bolts, a clamping frame for clamping the tool assembly to the slide block through the clamping frame, or any other fixing component 5 known to those skilled in the art.

Further, since the horizontal base 22 and the vertical base 21 are locked to be vertical, the accuracy of the perpendicularity of the L-shaped base 11 is increased, and the parallelism between the horizontal portion 111 of the L-shaped base 11 and the linear reference surface 221 of the horizontal base 22 and the machine tool guide rail is further increased and ensured, so that the measurement error of the straightness of the machine tool guide rail is reduced, and the data accuracy is improved.

Still further, the machine tool is generally provided with two machine tool guide rails and a driving screw rod, the tool can be generally mounted on a sliding block of one guide rail through a fixing component 5, the horizontal part 111 is vertical to the machine tool guide rails, the end part of the horizontal part 111 extends out to the machine tool guide rail of the other side, the end part of the horizontal part 111 is also provided with a first mounting part 1111, as shown in fig. 9, two different gauge stands can be mounted through the first mounting part 1111 and a second mounting groove 121, the measuring dial indicators on the two gauge stands are respectively contacted with the other guide rail and the screw rod, at the moment, the sliding block can be driven to drive the tool to generally slide along the guide rail, and then the gauge heads of the measuring dial indicators are moved along the surfaces of the other guide rail and the screw rod so as to measure the parallelism between the guide rail and the screw rod of the machine tool, so that the usable range of the tool is increased, and the applicability is increased; the movable placing seat 12 can be positioned on the L-shaped base 11 to slide so as to change the position, so that the tool can be suitable for measuring the parallelism of machine tools with different scales.

In the above technical solution, the horizontal portion 111 and the vertical portion 112 of the L-shaped base 11 are respectively provided with the horizontal base 22 and the vertical base 21, and the fixing component 5 fixes the vertical portion 112 on the guide rail slider of the machine tool, at this time, the straight line reference surface 221 of the horizontal portion 111 and the horizontal base 22 is parallel to the machine tool guide rail through the vertical portion 112, the gauge stand of the measurement dial indicator can be disposed in the second mounting groove 121 to abut against the straight line reference surface 221, the gauge head of the measurement dial indicator abuts against the machine tool guide rail, the movable placement seat 12 is driven to slide to abut against the estimated gauge stand to slide along the straight line reference surface 221 to measure the straightness of the guide rail, only the fixture is required to be mounted on the slider through the fixing component 5, and then the measurement dial indicator is mounted on the fixture, so that the straightness measurement can be performed, the operation flow is simplified, the measurement error caused by multiple fixing is reduced, the detection efficiency is improved, and secondly the slider of the guide rail drives the fixture to move generally so that the gauge head of the measurement dial indicator can abut against different guide rail sections, and the multi-section measurement accuracy is further improved.

As another embodiment of the present invention, the present invention further includes a locking member 23, where a columnar connection portion 222 provided on the transverse base member 22 penetrates through the connection hole 211 of the vertical base member 21 and extends out, a locking assembly is provided in the vertical base member 21, the locking assembly includes a sliding seat 33 and a locking member 31 provided thereon, and the locking member 23 is screwed on the columnar connection portion 222 to drive the sliding seat 33 to slide so that the locking member 31 is embedded in a locking groove 2221 provided on the columnar connection portion 222.

Specifically, as shown in fig. 3, the right end of the transverse base member 22 is provided with a columnar connection portion 222, and the connection hole 211 on the vertical base member 21 is perpendicular to the vertical side surface of the vertical base member 21, as shown in fig. 2, the vertical base member 21 is firstly installed into the vertical portion 112 of the L-shaped base 11, then the transverse base member 22 is installed into the horizontal portion 111 of the L-shaped base 11, the columnar connection portion 222 penetrates through the connection hole 211 and the end portion of the columnar connection portion 222 to extend out of the outer side of the vertical base member 21, at this time, the locking member 23 can be installed on the columnar connection portion 222 in a threaded manner and is abutted against the surface of the vertical base member 21 to complete vertical locking between the transverse base member 22 and the vertical base member 21, so that the perpendicularity of the L-shaped base member 11 is ensured while the perpendicularity of the L-shaped base member 21 is ensured, and errors generated when the straightness of the guide rail is detected by adopting the fixture are reduced.

Further, a sliding seat 33 and a locking piece 31 are disposed in the vertical base piece 21, when the locking piece 23 is mounted on the columnar connecting portion 222 in a threaded manner and abuts against the vertical base piece 21, the locking piece 23 drives the sliding seat 33 to slide so that the end portion of the locking piece 31 extends into the connecting hole 211, and then the end portion of the locking piece 31 abuts against the locking groove 2221 on the columnar connecting portion 222, so that the connection locking stability between the columnar connecting portion 222 and the vertical base piece 21 is further increased.

The manner in which the locking member 23 is used to drive the sliding seat 33 may be a rack and a gear, the gear is engaged with the sliding seat 33, the rack is slidably disposed, and one end of the rack extends out of the vertical base member 21, when the locking member 23 is threadedly mounted on the columnar connecting portion 222, the locking member 23 pushes the rack to slide to drive the sliding seat 33 to slide through the gear, or a link mechanism comprising a swing rod and a sliding rod is used, the locking member 23 pushes the sliding rod to slide to drive the swing rod to swing and push the sliding seat 33 to slide, or any other structure known to those skilled in the art may be used.

As still another embodiment of the present invention, the air bag member 4 is disposed in the vertical base member 21 such that the end portion is located at the front side of the connecting hole 211 in the default state, a conical transition portion 223 is disposed between the columnar connecting portion 222 and the lateral base member 22, and the air bag member 4 is slidably pressed by the sliding seat 33 so that the end portion expands to abut against the locking transition portion 223.

Specifically, as shown in fig. 3, the columnar connection portion 222 is connected with the transverse base member 22 through a conical transition portion 223, as shown in fig. 2, the end opening of the connection hole 211 is conical, when the transverse base member 22 and the vertical base member 21 are installed into the L-shaped base 11 to be locked vertically, the vertical base member 21 is installed first, then the transverse base member 22 is installed into the L-shaped base 11, at this time, the end portion of the columnar connection portion 222 is abutted against the air bag member 4 and then slides into the connection hole 211, so that the vertical base member 21 and the transverse base member 22 are prevented from being reduced due to the fact that the columnar connection portion 222 knocks or expands the connection hole 211, and the accuracy of the coaxiality between the columnar connection portion 222 and the connection hole 211 is reduced, then the vertical base member 21 and the transverse base member 22 are locked through the locking piece 23, and at this time, the conical transition portion 223 is abutted against the conical end opening of the connection hole 211, and the connection stability between the vertical base member 21 and the transverse base member 22 is increased, and the relative shake between the vertical base member 21 and the transverse base member 22 is reduced.

Further, as shown in fig. 3, the transition portion 223 is provided with a collision groove 2231, and as shown in fig. 5, the sliding seat 33 is provided with a pressing portion 331, the left end of the air bag member 4 extends out of the front side of the port opening of the connecting hole 211, the right end of the air bag member 4 is located on the sliding path of the pressing portion 331, when the locking member 23 is screwed on the columnar connecting portion 222 to enable the sliding seat 33 to slide, the sliding seat 33 is driven to slide so that the pressing portion 331 presses the right end of the air bag member 4 to enable the left end expansion deformation of the air bag member 4 to extend into and collide with the collision groove 2231, and further, a certain buffering effect is provided while further clamping and collision between the vertical base member 21 and the horizontal base member 22 are fixed, so that continuous shake interference measurement accuracy caused by external force resonance of the vertical base member 21 and the horizontal base member 22 is avoided.

As a further embodiment of the present invention, the secondary vertical auxiliary member 24 further includes a mating groove 241 formed thereon, and the secondary vertical auxiliary member 24 is vertically disposed on the side of the horizontal portion 111 near the end portion so that the mating groove 241 is sleeved on the lateral base member 22.

Specifically, as shown in fig. 3, a mating groove 241 that mates with the transverse base member 22 is formed on the secondary vertical auxiliary member 24, and when the tooling is installed, the secondary vertical auxiliary member 24 is vertically installed on the horizontal portion 111 of the L-shaped base 11, and then the vertical base member 21 is vertically installed on the vertical portion 112, at this time, the transverse base member 22 penetrates through the mating groove 241 to be installed on the horizontal portion 111 of the L-shaped base 11, at this time, as shown in fig. 2, the columnar connection portion 222 at the right end of the transverse base member 22 penetrates through the connection hole 211 of the vertical base member 21 and is locked by the locking member 23, and the end, close to the left side, of the transverse base member 22 is sleeved and fixed by the secondary vertical auxiliary member 24, so that errors caused by torsion and skew of the transverse base member 22 due to overlong length of the secondary vertical auxiliary member 24 are avoided, and the straightness errors of the tooling are further reduced, and the measurement accuracy is improved.

As still another embodiment provided by the present invention, the distance from the side surface of the mating groove 241 to the upper end of the secondary vertical auxiliary 24 is a, the distance from the straight reference surface 221 to the axis of the columnar connecting portion 222 is b, and the distance from the axis of the connecting hole 211 of the vertical base 21 to the upper end of the vertical base 21 is c, wherein: a+b=c.

Specifically, as shown in fig. 3, in the process of processing and production, the reference distance from the side surface, close to the upper end, of the matching groove 241 of the secondary vertical auxiliary piece 24 to the upper end surface of the matching groove 241 is a, the reference distance from the straight line reference surface 221 of the transverse base piece 22 to the axis of the columnar connecting portion 222 is b, the reference distance from the axis of the connecting hole 211 of the vertical base piece 21 to the upper end surface of the vertical base piece 21 is c, and a+b=c, when the three parts are assembled on the L-shaped base 11 at the same time, as shown in fig. 2, at the moment, since the reference distance on the secondary vertical auxiliary piece 24 plus the reference distance of the transverse base piece 22 is equal to the reference distance on the vertical base piece 21, if the assembly of the tool has no error, the upper end surfaces of the secondary vertical auxiliary piece 24 and the vertical base piece 21 should be parallel to each other and be located on the same plane, and the movable placement seat 12 is further provided with a third mounting groove 122, the gauge seat can be arranged on the third mounting groove 122, and then the movable placement seat 12 is slid to enable the gauge to be used to measure the contact degree and the straightness of the upper end surface of the secondary vertical auxiliary piece 24 and the vertical base piece 21, thereby obtaining the error value and self-maintenance and convenient for the tool.

As another embodiment provided by the invention, the fixing assembly 5 includes a magnetic member 51, a contact seat 53 and a copper layer 54, the vertical base 21 is provided with a contact portion 212, the copper layer 54 and the contact seat 53 are sequentially connected to form a circular inner cavity by surrounding the inside, the copper layer 54 separates the contact seat 53 and the contact portion 212, the magnetic member 51 is rotatably disposed in the circular inner cavity so that a first side surface of the contact seat 53 is a magnetic attraction surface, and the magnetic member 51 has the following two stations:

a degaussing station, wherein both ends of the magnetic piece 51 simultaneously contact the contact part 212, the copper layer 54 and the contact seat 53;

at the magnetic attraction station, two ends of the magnetic piece 51 respectively abut against the contact seat 53 and the contact portion 212.

Specifically, as shown in fig. 6, when the vertical base 21 is mounted to the vertical portion 112 of the L-shaped base 11, the contact portion 212 of the vertical base 21 is located at the bottom of the vertical portion 112, as shown in fig. 6, then the copper layer 54 and the contact seat 53 are sequentially mounted to the contact portion 212 such that the contact portion 212, the copper layer 54 and the contact seat 53 are internally surrounded to form a circular inner cavity, and the magnetic member 51 is rotatably provided on the contact portion 212 such that the magnetic member 51 is coaxially rotatable within the circular inner cavity, and the magnetic member 51 is provided with a rotation handle 511 extending outside the contact portion 212.

When the tool is required to be generally adsorbed on the slide block to measure the straightness or parallelism of the machine tool guide rail, the magnetic piece 51 is rotated to the magnetic attraction station by the rotating handle 511, at this time, one end of the magnetic piece 51 is contacted with the contact portion 212, and the other end of the magnetic piece is contacted with the contact seat 53, so that the contact portion 212 and the contact seat 53 are magnetized by the magnetic piece 51, and at this time, the first side surface of the contact seat 53 opposite to the contact portion 212 is an adsorption surface. The magnetized contact seat 53 can be used for enabling the first side surface of the magnetized contact seat to be adsorbed and fixed on the sliding block of the machine tool guide rail, so that the overall adsorption and fixation of the tool are realized, bolts are not needed to be used for fixing the tool on the sliding block of the guide rail, and the efficiency and the practical use of the tool in installation and disassembly are improved conveniently.

When the tool assembly needs to be detached from the slider, the magnetic piece 51 is rotated to the demagnetizing station by the rotating handle 511, at this time, both ends of the magnetic piece 51 are abutted against the contact portion 212, the copper layer 54 and the contact seat 53, that is, both ends of the magnetic piece 51 are abutted against the same object, so that magnetic lines of force of the magnetic piece 51 are closed, at this time, the contact portion 212 and the contact seat 53 are not magnetized by the magnetic piece 51 to generate an adsorption force, and then the tool assembly can be detached from the slider.

The contact portion 212, the copper layer 54 and the contact seat 53 may be fixedly connected by welding, or a countersunk copper stud may be threaded through the contact seat 53 and the copper layer 54 and connected to the contact portion 212, when the connection method of the countersunk copper stud is adopted, the contact seat 53 may be detached relative to the contact portion 212, and since the first side surface of the contact seat 53 is an adsorption surface and a contact horizontal reference surface, the contact seat 53 with a smaller volume may be detached by a bolt to individually repair the adsorption surface, thereby facilitating maintenance of the whole accuracy of the tool.

Further, the contact layers 52 made of soft material can be symmetrically disposed in the circular cavity, one contact layer 52 contacts the contact portion 212, the other contact layer 52 contacts the contact seat 53, and the copper layer 54 separates the two contact layers 52, when the magnetic member 51 rotates to be located in the circular cavity, the end portion of the magnetic member 51 rotates to abut against the contact layer 52, so that the end portion abrasion of the magnetic member 51 is relieved, and the service life of the magnetic member is prolonged.

As still another embodiment provided by the present invention, the contact portion 212 is provided with a vertical protruding portion 213, a first side surface of the vertical protruding portion 213 is a vertical reference surface, and the vertical protruding portion 213 is provided with a rubbing board 6 protruding away from the vertical base 21.

Specifically, as shown in fig. 4, the side surface of the contact portion 212, which faces the contact seat 53, is the first side surface, when the tool generally passes through the magnetic component 51, the contact seat 53, the copper layer 54 and the contact portion 212 to be adsorbed on the slide block, the first side surface of the vertical extension portion 213 is close to and props against the side surface of the slide block, and further, the perpendicularity between the vertical base 21 and the top surface of the slide block is guaranteed, the second vertical extension portion 213 is provided with the scraping plate 6, the scraping plate 6 is arc-shaped so that the end part of the scraping plate is props against the machine tool guide rail, when the tool generally installs perpendicularly to the machine tool guide rail to detect parallelism, the scraping plate 6 also moves along with the slide block to clean the front side of the guide rail so as to sweep impurities or dust on the guide rail, vibration is reduced in the sliding process of the slide block, and detection errors of parallelism are avoided.

Further, when the whole fixture is fixed by the fixing assembly 5, the magnetic piece 51 is located at the magnetic suction station, so that the vertical extending part 213 of the vertical base piece 21 is magnetic, the scraping plate 6 is arc-shaped to scoop up iron impurities with large weight on the guide rail and adsorb the iron impurities on the vertical extending part 213, thereby avoiding the iron impurities from rolling down onto the guide rail again to cause abnormal noise or vibration of the sliding block, and facilitating subsequent cleaning.

As another embodiment of the present invention, the locking member 31 is rotatably disposed on the sliding seat 33, and the permanent magnetic member 8 is disposed in the locking slot 2221 to drive the magnetized locking member 31 to deflect to splay against the locking slot 2221.

Specifically, as shown in fig. 5, the upper ends of the locking pieces 31 are slidably disposed on the sliding seat 33, and the permanent magnetic pieces 8 are disposed in the locking grooves 2221 of the columnar connecting portions 222, when the fixture is generally adsorbed and fixed on the sliding block through the fixing component 5 to perform rail measurement, the magnetic pieces 51 are located at the magnetic attraction station to magnetize the vertical base pieces 21, the upper ends of the locking pieces 31 are located in the vertical base pieces 21, the lower ends of the locking pieces 31 extend out of the vertical base pieces 21, so that the two locking pieces 31 are magnetized, at this time, the magnetic poles at the lower ends of the locking pieces 31 repel the permanent magnetic pieces 8, and then the lower ends of the locking pieces 31 deflect away from the permanent magnetic pieces 8 under the repulsive force of the permanent magnetic pieces 8, at this time, the locking pieces 31 deflect in a splayed shape and collide in the locking grooves 2221 through the repulsive force between the locking pieces and the permanent magnetic pieces 8, so that the locking pieces 31 can be located between the vertical base pieces 21 and the vertical base pieces 22 to play a buffering role, and further, the accuracy of the vibration stability of the vertical base pieces 22 and the vertical base pieces 22 is further avoided, and the vibration stability of the vibration of the vertical base pieces 22 is increased due to the fact that the vibration stability of the vertical base pieces are continuously measured.

As still another embodiment provided by the present invention, the vertical base 21 and the L-shaped base 11 are both provided with the observation hole 7, the locking groove 2221 is provided with the through transverse hole 2222 coaxial with the observation hole 7, and the locking piece 31 deflects in a splayed shape to end portion to shield the through transverse hole 2222.

Specifically, as shown in fig. 3 and fig. 4, the L-shaped base 11 and the vertical base 21 are both provided with the observation hole 7, when the horizontal base 22 and the vertical base 21 are both mounted on the L-shaped base 11, the through transverse hole 2222 in the locking slot 2221 is coaxially through with the observation hole 7, as shown in fig. 5, when the tooling is generally adsorbed and fixed on the slide block through the fixing component 5 to measure the guide rail, the magnetic component 51 is positioned at the magnetic attraction station to magnetize the vertical base 21, the upper end of the locking component 31 is positioned in the vertical base 21, the lower end extends out of the vertical base 21, so that the two locking components 31 are magnetized, at the moment, the magnetic poles at the lower end of the locking component 31 repel the permanent magnet 8, and the lower end of the locking component 31 deflects away from the permanent magnet 8 under the repulsive force of the permanent magnet 8, at the moment, the locking component 31 is deflected to be in an eight shape and is abutted against the locking slot 2221, and if the mounting error between the horizontal base 22 and the vertical base 21 and the L-shaped base 11 is low, the lower end of the locking component is abutted against the through hole 2221 completely covers the lower end of the locking component 22231; if the error is installed, the linear reference surface 221 of the transverse base 22 is not horizontal, and the locking groove 2221 is also not vertical, so that the locking piece 31 is not rotated to a splayed shape due to clamping stagnation even if the locking piece 31 is repelled by the permanent magnet piece 8, and the through transverse hole 2222 is exposed;

that is, when the installation of the tool is completed, eyes see into the observation hole 7, if the inside of the tool is completely shielded by the locking piece 31 and no light is exposed, the overall installation reference of the tool is kept better, if light is exposed in the observation hole 7, the installation dislocation of the transverse base piece 22 of the tool is indicated to cause the straight line reference surface 221 to be in a deflection shape, the preliminary self-test when the installation of the tool is completed is facilitated, and the detection accuracy of the tool is increased.

As a further embodiment of the present invention, the locking assembly further includes a movable ring 32 and an elastic member 34, where the movable ring 32 is axially slidably disposed on the vertical base 21, and the first end of the movable ring 32 is slidably disposed on the inclined sliding guide surface of the sliding seat 33, and the elastic member 34 is used for driving the movable ring 32 to slide out of the vertical base 21 for resetting.

Specifically, as shown in fig. 5, the movable ring 32 is axially slidably disposed on the vertical base 21, and the right end of the movable ring 32 faces the outer side of the vertical base 21, and the left end of the movable ring 32 is a first end and is slidably disposed on the inclined sliding surface of the sliding seat 33, that is, when the locking member 23 is threadedly mounted on the cylindrical connecting portion 222, the locking member 23 pushes the right end of the movable ring 32 to slide and move the movable ring 32 to the left, and then the left end of the movable ring 32 pushes the sliding seat 33 along the inclined sliding surface to slide and move close to the cylindrical connecting portion 222, so that the lower end of the locking member 31 extends into the locking groove 2221; when the transverse base member 22 and the vertical base member 21 need to be detached from the L-shaped base 11 to correct the grinding of the reference surface of the tool, the locking member 23 is detached from the columnar connecting portion 222, and the movable ring 32 is supported by the elastic member 34 to slide and reset to the outer side of the vertical base member 21 so that the sliding seat 33 and the locking member 31 slide and reset away from the columnar connecting portion 222, thereby facilitating the improvement of the disassembly and assembly efficiency between the vertical base member 21 and the transverse base member 22.

The elastic member 34 may be a spring, an air bag, an elastic plate, or other elastic members known to those skilled in the art.

Working principle: firstly, vertically installing the secondary vertical auxiliary piece 24 on the horizontal part 111 of the L-shaped base 11, then vertically installing the vertical base piece 21 on the vertical part 112, at this time, penetrating the matching groove 241 by the transverse base piece 22 to be installed on the horizontal part 111 of the L-shaped base 11, at this time, as shown in fig. 2, penetrating the connecting hole 211 of the vertical base piece 21 by the columnar connecting part 222 at the right end of the transverse base piece 22 and being locked by the locking piece 23, and sleeving and fixing one end of the transverse base piece 22 close to the left side by the secondary vertical auxiliary piece 24, then, when the locking piece 23 is screwed on the columnar connecting part 222 by the locking piece 23 to vertically lock the transverse base piece 22 and the vertical base piece 21, the locking piece 23 pushes the right end of the movable ring 32 to enable the movable ring 32 to slide and move left, then, the left end of the movable ring 32 pushes the sliding seat 33 to slide close to the columnar connecting part 222 along the inclined sliding guide surface, and the lower end of the locking piece 31 stretches into the locking groove 2221; the pressing portion 331 presses the right end of the air bag member 4 when the sliding seat 33 slides to make the left end of the air bag member 4 expand and deform to extend into and collide with the collision groove 2231, so as to further clamp and collide with and fix the vertical base member 21 and the horizontal base member 22;

when the straightness of the guide rail needs to be measured, the fixture can be integrally fixed on the sliding block of the guide rail to be measured through the fixing component 5, the magnetic piece 51 is rotated to the magnetic attraction station through the rotating handle 511, at the moment, one end of the magnetic piece 51 is contacted with the contact portion 212, the other end of the magnetic piece is contacted with the contact seat 53, and then the contact portion 212 and the contact seat 53 are magnetized by the magnetic piece 51, and at the moment, the first side surface of the contact seat 53, which is opposite to the contact portion 212, is an adsorption surface. The magnetized contact seat 53 can be used for enabling the first side surface of the contact seat to be adsorbed and fixed on a slide block of a machine tool guide rail, so that the horizontal part 111 of the L-shaped base 11 is parallel to the guide rail, a gauge stand of a measuring dial indicator can be arranged in the second mounting groove 121 to be abutted against the linear reference surface 221, the gauge head of the measuring dial indicator is abutted against the machine tool guide rail, the movable placing seat 12 is driven to slide to abut against the linear reference surface 221 to slide to measure the straightness of the guide rail to be measured, and the straightness measurement can be carried out only by mounting a tool on the slide block through the fixing component 5 and then mounting the measuring dial indicator on the tool;

when the parallelism between the guide rails needs to be measured, the fixture is generally fixed on the sliding block of the guide rail through the fixing component 5, so that the horizontal part 111 is vertical to the guide rail of the machine tool, the end part of the horizontal part 111 extends out to the guide rail of the machine tool on the other side, the end part of the horizontal part 111 is also provided with the first installation part 1111, two different gauge stands can be installed through the first installation part 1111 and the second installation groove 121, the measuring dial indicators on the two gauge stands are respectively contacted with the other guide rail and the screw rod, at the moment, the sliding block can be driven to drive the fixture to generally slide along the guide rail, and then the gauge heads of the measuring dial indicators move along the surfaces of the other guide rail and the screw rod, so that the parallelism between the guide rail and the screw rod of the machine tool is measured;

when the fixture is generally fixed on the sliding blocks of the guide rails by the fixing assembly 5, the gauge stand can be arranged on the third mounting groove 122, and then the movable placement seat 12 is slid to enable the gauge head of the measuring dial indicator to conduct contact measurement of linearity and parallelism on the upper end surfaces of the secondary vertical auxiliary piece 24 and the vertical base piece 21, so that an error value of the fixture is obtained; the upper ends of the locking pieces 31 are positioned in the vertical base piece 21, the lower ends of the locking pieces 31 extend out of the vertical base piece 21, so that the two locking pieces 31 are magnetized, at the moment, the magnetic poles at the lower ends of the locking pieces 31 repel the permanent magnetic pieces 8, and the lower ends of the locking pieces 31 deflect away from the permanent magnetic pieces 8 under the repulsive force of the permanent magnetic pieces 8, at the moment, the locking pieces 31 deflect under force to be in a splayed shape and are abutted against the locking grooves 2221, if the installation errors between the transverse base piece 22 and the vertical base piece 21 and the L-shaped base piece 11 are lower, and when the locking pieces 31 are in the splayed shape and are abutted against the locking grooves 2221, the lower ends of the locking pieces 31 completely cover the through transverse holes 2222; if the error is installed, the linear reference surface 221 of the transverse base 22 is not horizontal, and the locking groove 2221 is not vertical, so that the locking member 31 will not rotate to a splayed shape due to the clamping even if the locking member 31 is repelled by the permanent magnet member 8, and the through transverse hole 2222 is exposed.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims

1. Guide rail straightness accuracy measurement frock, its characterized in that includes:

the L-shaped base (11) is divided into a horizontal part (111) and a vertical part (112) according to the structure, wherein a transverse base piece (22) and a vertical base piece (21) are respectively and parallelly arranged on the horizontal part (111) and the vertical part (112), and the transverse base piece (22) and the vertical base piece (21) are vertically locked;

the movable placing seat (12) is arranged on the horizontal part (111) and is arranged in parallel and sliding mode relative to the transverse base (22), and a second mounting groove (121) penetrating through a straight line reference surface (221) facing the transverse base (22) is formed in the movable placing seat (12);

and the fixing assembly (5) is used for fixing the L-shaped base (11) to the sliding block.

2. The guide rail straightness measurement tool according to claim 1, further comprising a locking piece (23), wherein a columnar connecting portion (222) arranged on the transverse base member (22) penetrates through a connecting hole (211) of the vertical base member (21) and extends out, a locking assembly is arranged in the vertical base member (21), the locking assembly comprises a sliding seat (33) and a locking piece (31) arranged on the sliding seat, the locking piece (23) is connected with the columnar connecting portion (222) in a threaded mode, and the sliding seat (33) is driven to slide so that the locking piece (31) is embedded into a locking groove (2221) formed in the columnar connecting portion (222).

3. The guide rail straightness measurement tool according to claim 2, further comprising an air bag member (4) disposed in the vertical base member (21) such that an end portion is located at the front side of the connecting hole (211) in a default state, a conical transition portion (223) is disposed between the columnar connecting portion (222) and the transverse base member (22), and the air bag member (4) is slidably pressed by the sliding seat (33) so that the end portion expands to abut against the locking transition portion (223).

4. The guide rail straightness measurement tool according to claim 1, further comprising a secondary vertical auxiliary piece (24) provided with a matching groove (241), wherein the secondary vertical auxiliary piece (24) is vertically arranged on one side of the horizontal portion (111) close to the end portion so that the matching groove (241) is sleeved on the transverse base piece (22).

5. The guide rail straightness measurement tool according to claim 4, wherein a distance from a side surface of the mating groove (241) to an upper end of the secondary vertical auxiliary (24) is a, a distance from a straight reference surface (221) to an axis of the columnar connecting portion (222) is b, and a distance from an axis of the connecting hole (211) of the vertical base (21) to an upper end of the vertical base (21) is c, wherein: a+b=c.

6. A guide rail straightness measurement tool according to claim 3, wherein the fixing assembly (5) comprises a magnetic member (51), a contact seat (53) and a copper layer (54), the vertical base member (21) is provided with a contact portion (212), the copper layer (54) and the contact seat (53) are sequentially connected to form a circular inner cavity in a surrounding manner, the copper layer (54) separates the contact seat (53) and the contact portion (212), the magnetic member (51) is rotatably arranged in the circular inner cavity so that a first side surface of the contact seat (53) is a magnetic attraction surface, and the magnetic member (51) has the following two stations:

a degaussing station, wherein both ends of the magnetic piece (51) simultaneously contact the contact part (212), the copper layer (54) and the contact seat (53);

and the two ends of the magnetic piece (51) respectively abut against the contact seat (53) and the contact part (212) at the magnetic attraction station.

7. The guide rail straightness measurement tool according to claim 6, wherein a vertical extension portion (213) is arranged on the contact portion (212), a first side surface of the vertical extension portion (213) is a vertical reference surface, and a scraping plate (6) extending back to the vertical base member (21) is arranged on the vertical extension portion (213).

8. The guide rail straightness measurement tool according to claim 6, wherein the locking piece (31) is rotatably arranged on the sliding seat (33), and a permanent magnet piece (8) is arranged in the locking groove (2221) to drive the magnetized locking piece (31) to deflect and press against the locking groove (2221) in a splayed shape.

9. The guide rail straightness measurement tool according to claim 8, wherein the vertical base (21) and the L-shaped base (11) are provided with observation holes (7), the locking groove (2221) is internally provided with a through transverse hole (2222) coaxial with the observation holes (7), and the locking piece (31) deflects to be splayed to cover the through transverse hole (2222) at the end part.

10. The guide rail straightness measurement tool according to claim 2, wherein the locking assembly further comprises a movable ring (32) and an elastic piece (34), the movable ring (32) is axially arranged on the vertical base (21) in a sliding mode, the first end of the movable ring (32) is arranged on the inclined guide sliding surface of the sliding seat (33) in a sliding mode, and the elastic piece (34) is used for driving the movable ring (32) to extend out of the outer side of the vertical base (21) in a sliding mode to reset.