CN108772749B - Large-stroke gantry machine tool translational shaft sectional rack assembling and adjusting precision detection device - Google Patents
Large-stroke gantry machine tool translational shaft sectional rack assembling and adjusting precision detection device Download PDFInfo
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- CN108772749B CN108772749B CN201810866812.2A CN201810866812A CN108772749B CN 108772749 B CN108772749 B CN 108772749B CN 201810866812 A CN201810866812 A CN 201810866812A CN 108772749 B CN108772749 B CN 108772749B
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Abstract
The invention discloses a large-stroke gantry machine tool translational shaft sectional rack mounting and adjusting precision detection device which is mounted on a supporting cast iron table and comprises a large-stroke movement mechanism, a precise measurement mechanism, a micro-stroke adjustment mechanism and a cylindrical combined part, wherein the large-stroke movement mechanism is slidably mounted on the supporting cast iron table, the precise measurement mechanism is connected with the large-stroke movement mechanism, the micro-stroke adjustment mechanism is used for fine adjustment of the large-stroke movement mechanism, and the cylindrical combined part is mounted on the supporting cast iron table and used for positioning a product to be detected. The beneficial effects of the invention are as follows: the invention realizes the rapid and accurate detection of the assembly and adjustment precision of the segmented rack of the flat moving shaft of the large-stroke gantry machine tool, and has important application value for the installation, the adjustment, the maintenance and the adjustment of the segmented rack-driven large-stroke gantry machine tool.
Description
Technical Field
The invention relates to the technical field of detection instruments, in particular to a large-stroke gantry machine tool translational shaft sectional rack mounting and adjusting precision detection device.
Background
The large gantry type numerical control machine tool can keep a workpiece to be processed motionless, can realize large-scale processing by only moving the cutter, and has the advantage of being independent in the aspect of processing large aviation and aerospace structural parts. The motion stroke of the X-direction translational shaft of the large gantry numerical control machine tool is usually larger, the length of the X-direction translational shaft is about 5 meters, the length of the X-direction translational shaft is about 30 meters, the X-direction translational shaft of the machine tool is very long and cannot be driven by a ball screw, and even if the translational shaft of the machine tool with smaller partial stroke can be driven by the ball screw, the manufacturing cost of the machine tool is very high. Therefore, the combination of the multi-section sectional racks to form a long-stroke gear sectional rack transmission pair becomes the most important method for solving the X-axis driving of the machine tool.
The key technology for forming long-stroke gear-segment-rack kinematic pair drive by combining the multiple segments of segment racks is to realize high-precision assembly of the multiple segments of segment racks, and specific indexes comprise: the parallelism and straightness between the full-stroke sectional racks and the linear guide rail, the assembly clearance between the sectional racks must be ensured, and the tooth form at the assembly clearance and the tooth form meshing conditions at the non-clearance are basically consistent. In order to achieve a better transmission meshing effect, the maximum error of the meshing points of the sectional racks relative to the linear guide rail is not more than 50 micrometers in full stroke, and the deviation between the meshing points of adjacent sectional racks is basically controlled to be 10 micrometers. In order to solve the problem, a high-precision cylinder (with cylindricity of about 1 micrometer) is usually placed in a tooth groove of a sectional rack in engineering and is in close contact with two sides of the sectional rack, and the transmission precision of the sectional rack in a stroke is evaluated by detecting the heights of cylinders in different tooth grooves to reflect the difference of meshing points of the sectional rack through a dial gauge. For the segmented racks which do not meet the meshing conditions, the positions of the segmented racks are required to be adjusted through mounting threads, so that the full-stroke segmented racks are guaranteed to have good transmission precision.
Because the X driving shaft of the large gantry machine tool has long movement stroke, the direct detection through the dial indicator has several difficulties:
(1) The detection of the meshing point heights of all the sectional racks needs to refer to the same standard, namely the detection position of the dial indicator cannot be changed relative to the reference standard of the sectional racks.
(2) The precision of the meshing point of the segmented rack is reflected by detecting the highest point of the cylinder attached to the inside of the tooth slot through the dial indicator, and normally, the highest point of the cylinder is difficult to accurately stay at the optimal detection point when the dial indicator is manually moved to detect.
(3) However, in the field of aeronautical manufacturing currently, on one hand, the application requirement of a large gantry numerical control machine tool is strong, and the assembly and debugging of a new machine tool are required to continuously improve the lifting efficiency of the method; on the other hand, some manufacturing enterprises need to continuously reform and overhaul a large-scale gantry machine tool for a long time, and the task of replacing and adjusting the segmented racks is also required.
Disclosure of Invention
The invention aims to provide the device for detecting the mounting and adjusting precision of the segmented racks of the flat moving shaft of the large-stroke gantry machine tool, which can realize the rapid and accurate detection of the mounting and adjusting precision of the segmented racks of the flat moving shaft of the large-stroke gantry machine tool and has important application value for the mounting, the adjustment and the maintenance and the adjustment of the segmented racks for driving the large-stroke gantry machine tool.
The invention is realized by the following technical scheme:
the utility model provides a precision detection device is transferred to large-stroke planer lathe translation axle segmentation rack, installs on supporting cast iron platform, including slidable mounting on supporting cast iron bench's large-stroke motion, the precision measurement mechanism who is connected with large-stroke motion, be used for carrying out fine setting to large-stroke motion's micro-stroke adjustment mechanism and install on supporting cast iron bench and be used for the cylinder combined part of location product to be measured.
Further, in order to better realize the invention, the large-stroke movement mechanism comprises a linear guide rail arranged on a support cast iron table and a mounting plate arranged on the linear guide rail in a sliding manner.
Further, in order to better realize the invention, the precision measurement mechanism comprises a dial indicator contacted with the cylindrical combination unit, a dial indicator connecting rod connected with the dial indicator, and a dial indicator magnetic suction seat connected with the mounting plate, wherein the dial indicator connecting rod is arranged on the dial indicator magnetic suction seat; the dial indicator connecting rod is a joint type adjusting connecting rod.
Further, in order to better realize the invention, the micro-stroke adjusting mechanism comprises a T-shaped saddle, a stepped threaded shaft penetrating through the smaller end of the T-shaped saddle and connected with the mounting plate, a micro-stroke adjusting handle arranged on one side of the stepped threaded shaft far away from the mounting plate, and two magnetic attraction seats symmetrically arranged on the T-shaped saddle, wherein the magnetic attraction seats are arranged on one side of the larger end of the T-shaped saddle close to the smaller end, and the larger end of the T-shaped saddle is in contact with the supporting cast iron table.
Further, in order to better implement the present invention, the cylindrical combination member includes a bar magnet mounted on a support cast iron table and a cylindrical combination member magnetically connected with the bar magnet; the product to be tested is arranged between the bar magnet and the cylindrical combined part and is magnetically connected with the bar magnet.
Further, in order to better realize the invention, the cylindrical combined part comprises a cylindrical serial connecting rod and a plurality of precise cylinders sleeved on the outer side surfaces of the cylindrical serial connecting rods, and the axial lead of the cylindrical serial connecting rod is perpendicular to the axial lead of the precise cylinders.
Further, in order to better realize the invention, two bosses are arranged on one side of the stepped threaded shaft, which is close to the mounting plate, and form a concave bayonet with the stepped threaded shaft, and a concave clamping groove matched with the concave bayonet is arranged on one side of the mounting plate, which is close to the stepped threaded shaft; the concave bayonet is arranged in the concave clamping groove.
Further, in order to better realize the invention, one end of the stepped threaded shaft far away from the mounting plate is provided with a micro-stroke adjusting handle.
Further, to better implement the present invention, the mounting plate is a T-shaped mounting plate, the larger end of which is slidably mounted to the linear guide rail.
Further, in order to better realize the invention, a sliding block which is slidably arranged on the linear guide rail is arranged at one side of the larger end of the T-shaped mounting plate, which is close to the linear guide rail; and one end of the sliding block, which is close to the linear guide rail, is provided with a dovetail groove, and the linear guide rail is arranged in the dovetail groove.
Compared with the prior art, the invention has the following advantages:
(1) The invention can realize higher linear movement resolution;
(2) The invention is provided with the micro-travel adjusting mechanism which is arranged on two sides of the T-shaped mounting plate according to the requirement so as to adapt to adjustment and detection of different positions;
(3) The invention realizes higher linear movement resolution, thereby being capable of rapidly capturing the highest point of the precise cylinder to be measured and having high measurement efficiency;
(4) The invention can realize the measurement of the position conditions of a plurality of products to be measured through one-time adjustment, and has simple structure and strong practicability.
Drawings
FIG. 1 is a view showing the state of use of the present invention mounted on a support cast iron stand;
FIG. 2 is a schematic diagram of the structure at F in the present invention;
FIG. 3 is a schematic view of the structure of the mounting plate of the present invention;
FIG. 4 is a schematic view of a stepped threaded shaft according to the present invention;
FIG. 5 is a schematic view of the structure of the cylindrical assembly of the present invention;
the device comprises a 1-T-shaped mounting plate, a 101-concave clamping groove, a 2-linear guide rail, a 3-sliding block, a 4-supporting cast iron table, a 5-supporting cement upright post, a 7-magnetic force suction seat, an 8-T-shaped saddle, a 10-micro-travel adjusting handle, a 11-stepped threaded shaft and a 111-boss, wherein the T-shaped mounting plate is arranged on the bottom of the main body; 112-a female bayonet; 12-saddle handles, 13-dial gauges, 14-cylinder combination parts, 141-precision cylinders, 142-cylinder string links, 15-bar magnets, 16-segmented racks, 17-dial gauge connecting rods and 18-dial gauge magnetic attraction seats.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1:
the invention is realized by the following technical scheme, as shown in fig. 1-5, a large-stroke planer machine tool translational shaft sectional rack mounting and adjusting precision detection device is arranged on a supporting cast iron table 4 and comprises a large-stroke movement mechanism, a precision measurement mechanism, a micro-stroke adjustment mechanism and a cylindrical combination part 14, wherein the large-stroke movement mechanism is slidably arranged on the supporting cast iron table 4, the precision measurement mechanism is connected with the large-stroke movement mechanism, the micro-stroke adjustment mechanism is used for fine adjustment of the large-stroke movement mechanism, and the cylindrical combination part 14 is arranged on the supporting cast iron table 4 and is used for positioning a product to be measured.
It should be noted that, through the above-mentioned improvement, when using, will await measuring the product and install on cylinder combined part 14, will be large stroke motion mechanism slidable mounting on supporting cast iron platform 4, control and be connected with large stroke motion mechanism's micro-travel adjustment mechanism realizes that large stroke motion mechanism slides along supporting cast iron platform 4 length direction to realize measuring cylinder combined part 14 with the precision measurement mechanism that large stroke motion mechanism is connected, thereby realize quick, accurate detection.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 2:
this embodiment is further optimized based on the above embodiment, as shown in fig. 1, further, in order to better implement the present invention, the long-stroke movement mechanism includes a linear guide rail 2 mounted on a support cast iron table 4, and a mounting plate slidably mounted on the linear guide rail 2.
By the improvement, the mounting plate is respectively connected with the micro-stroke adjusting mechanism and the precise measuring mechanism.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 3:
the embodiment is further optimized on the basis of the embodiment, as shown in fig. 1, the precise measurement mechanism comprises a dial indicator 13 contacted with the cylindrical combination unit, a dial indicator connecting rod 17 connected with the dial indicator 13, and a dial indicator magnetic suction seat 18 connected with the mounting plate, wherein the dial indicator connecting rod 17 is arranged on the dial indicator magnetic suction seat 18; the dial indicator connecting rod 17 is a joint type adjusting connecting rod.
By the improvement, the dial indicator magnetic attraction seat 18 can be opened or closed by the adjusting knob so as to realize the quick assembly and disassembly of the precise measuring mechanism;
the dial indicator connecting rod 17 is a common articulated adjusting connecting rod, the number of specific joints can be determined with more detection environments and required degrees of freedom, and the final purpose needs to ensure that when the height of the cylindrical combined component 14 is detected, the contact of the dial indicator 13 is perpendicular to the back of a product to be detected as much as possible so as to install a reference.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 4:
this embodiment is further optimized based on the above embodiment, as shown in fig. 2 and 3, the micro-stroke adjusting mechanism includes a T-shaped saddle 8, a stepped threaded shaft 11 penetrating through the smaller end of the T-shaped saddle 8 and connected with the mounting plate, a micro-stroke adjusting handle 10 installed on one side of the stepped threaded shaft 11 far away from the mounting plate, and two magnetic attraction seats 7 symmetrically installed on the T-shaped saddle 8, wherein the magnetic attraction seats 7 are installed on one side of the larger end of the T-shaped saddle 8 near the smaller end, and the larger end of the T-shaped saddle 8 contacts with the supporting cast iron stand 4.
It should be noted that, through the above improvement, the material of T shape saddle 8 is magnetic conduction metal, and its both ends are provided with rectangular recess, can just put the piece magnetic force and inhale seat 7 to make the switch knob of two magnetic force inhale seat 7 upwards in order to adjust the use.
The bottom of the T-shaped saddle 8 is smooth to contact with the upper surface of the support cast iron table 4, the knob of the magnetic attraction seat 7 is opened, the T-shaped saddle 8 is fixed relative to the support cast iron table 4 under the action of magnetic attraction force, and an acting point can be provided for adjusting a large-stroke movement mechanism. The middle part of the T-saddle 8 is provided with a threaded through hole which can be fitted with a stepped threaded shaft 11.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 5:
this embodiment is further optimized based on the above embodiment, and as shown in fig. 5, the cylindrical assembly 14 includes a bar magnet 15 mounted on the support cast iron stand 4 and a cylindrical assembly magnetically connected to the bar magnet 15; the product to be measured is arranged between the bar magnet 15 and the cylindrical combined part and is magnetically connected with the bar magnet 15.
Further, in order to better implement the present invention, the cylindrical combined part includes a cylindrical string link 142, and a plurality of precision cylinders 141 sleeved on the outer side surface of the cylindrical string link 142, and the axis of the cylindrical string link 142 is perpendicular to the axis of the precision cylinders 141.
It should be noted that, through the above improvement, fig. 5 is a cylindrical combined component, and the cylindrical serial link 142 passes through the upper sections of the plurality of precision cylinders 141 and is perpendicular to each other, so that the plurality of precision cylinders 141 form a whole through the connecting line, that is, the cylindrical combined component, and meanwhile, two ends of the cylindrical serial link 142 have limiting portions larger than the circular holes on the precision cylinders 141 so as to ensure that the precision cylinders 141 cannot slide out.
When the product to be measured is the segmented rack 16 to be measured, as the cylindricity of the precision cylinder 141 required by the assembly precision of the segmented rack 16 to be measured is usually about 1 micron, the diameter of the precision cylinder 141 is required to ensure that the tangent line is positioned near the tooth-shaped center line of the segmented rack 16 to be measured when the precision cylinder is attached to the segmented rack 16 to be measured; after the to-be-detected segmented rack 16 achieves coarse positioning relative to the support cast iron table 4 through the base positioning boss 111 on the support cast iron table 4, the clamping screw is screwed into the through hole of the to-be-detected segmented rack 16, so that the to-be-detected segmented rack 16 does not easily slide, but can still be adjusted in position through hammer knocking. After the basic clamping state is reached, each precise cylinder 141 of the cylindrical combined part is sequentially placed into a tooth slot to be detected, and then the bar magnet 15 is placed on the back surface of the to-be-detected segmented rack 16 to be consistent with the position of the placed cylindrical combined part. The precision cylinder 141 will self-adaptively closely engage the segmented rack tooth form and maintain a relatively stable boundary condition under the force of the bar magnet 15. By the method, the tooth form error to be detected of the to-be-detected segmented racks 16, particularly the transition position tooth form of the two to-be-detected segmented racks 16, can be converted into the height difference of the precise cylinder 141.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 6:
further, as shown in fig. 4, in order to better implement the present invention, in this embodiment, two bosses 111 are disposed on a side of the stepped threaded shaft 11, which is close to the mounting plate, the two bosses 111 and the stepped threaded shaft 11 form a concave bayonet 112, and a concave clamping groove 101 that is used in cooperation with the concave bayonet 112 is disposed on a side of the mounting plate, which is close to the stepped threaded shaft 11; the female bayonet 112 fits within the female bayonet 101.
Further, in order to better implement the present invention, the end of the stepped threaded shaft 11 remote from the mounting plate is provided with a micro-stroke adjustment knob 10.
By the above improvement, the step screw shaft 11 rotates together with the rotation of the fine stroke adjustment knob 10, and the step screw shaft 11 is spirally moved by the spiral movement pair formed by the step screw shaft 11 and the T-shaped saddle 8.
When the relative position of the stepped threaded shaft 11 relative to the large-stroke movement mechanism is set, the position and the posture of the T-shaped saddle 8 are adjusted on the support cast iron table 4, so that the concave bayonet 112 of the stepped threaded shaft 11 is ensured to be positioned in the concave clamping groove 101 of the T-shaped mounting plate 1, and at the moment, the diameter of the concave bayonet 112 of the stepped threaded shaft 11 is smaller than the width of the concave clamping groove 101, so that the stepped threaded shaft 11 can freely rotate. Meanwhile, the diameter of the boss 111 of the stepped threaded shaft 11 is larger than the width of the concave clamping groove 101 of the T-shaped mounting plate 1, so that the stepped threaded shaft 11 cannot independently move axially, and the stepped threaded shaft 11 must overcome the resistance of the T-shaped mounting plate 1 to drive the large-stroke movement mechanism to move together to realize the axial movement.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 7:
this embodiment is further optimized on the basis of the above embodiment, as shown in fig. 1-5, and further, in order to better implement the present invention, the mounting plate is a T-shaped mounting plate 1, and the larger end of the T-shaped mounting plate 1 is slidably mounted on the linear guide rail 2.
Further, in order to better implement the present invention, a slider 3 slidably mounted on the linear guide rail 2 is disposed on a side of the larger end of the T-shaped mounting plate 1 near the linear guide rail 2; and a dovetail groove is formed in one end, close to the linear guide rail 2, of the sliding block 3, and the linear guide rail 2 is arranged in the dovetail groove.
It should be noted that, by the above improvement, the number of the sliders 3 is two and symmetrically arranged at the larger end along the smaller end; the dovetail groove of the sliding block 3 and the dovetail groove structure of the linear guide rail 2 form a sliding pair, and the precise matching of the linear guide rail 2 and the sliding block 3 ensures the consistency of the movement of the sliding block 3 and the geometric precision of the linear guide rail 2.
The T-shaped mounting plate 1 and the sliding block 3 are fastened and connected into a whole through bolts. The bolts pass through the through holes of the T-shaped mounting plate 1 and are screwed into the reserved threaded holes on the surface of the sliding block 3, so that the T-shaped mounting plate 1 and the sliding block 3 are integrated, the T-shaped mounting plate 1 only has the freedom of moving along the direction of the linear guide rail 2, and the precision of other constraint directions is jointly ensured by the linear guide rail 2 and the sliding block 3.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
Example 8:
as shown in fig. 1-5, the device for detecting the installation and adjustment precision of the segmental racks of the flat moving shaft of the large-stroke gantry machine tool is installed on the supporting cast iron table 4 and comprises a large-stroke moving mechanism, a precise measuring mechanism, a micro-stroke adjusting mechanism and a cylindrical combined part 14, wherein the large-stroke moving mechanism is slidably installed on the supporting cast iron table 4, the precise measuring mechanism is connected with the large-stroke moving mechanism, the micro-stroke adjusting mechanism is used for fine adjusting the large-stroke moving mechanism, and the cylindrical combined part 14 is installed on the supporting cast iron table 4 and is used for positioning the segmental racks 16 to be detected.
Further, in order to better implement the present invention, the large-stroke movement mechanism includes a linear guide rail 2 mounted on a support cast iron table 4, and a mounting plate slidably mounted on the linear guide rail 2.
Further, in order to better realize the invention, the precision measurement mechanism comprises a dial indicator 13 contacted with the cylindrical combination unit, a dial indicator connecting rod 17 connected with the dial indicator 13, and a dial indicator magnetic suction seat 18 connected with the mounting plate, wherein the dial indicator connecting rod 17 is arranged on the dial indicator magnetic suction seat 18; the dial indicator connecting rod 17 is a joint type adjusting connecting rod.
Further, in order to better realize the invention, the micro-stroke adjusting mechanism comprises a T-shaped saddle 8, a stepped threaded shaft 11 penetrating through the smaller end of the T-shaped saddle 8 and connected with a mounting plate, a micro-stroke adjusting handle 10 arranged on the side of the stepped threaded shaft 11 far away from the mounting plate, and two magnetic attraction seats 7 symmetrically arranged on the T-shaped saddle 8, wherein the magnetic attraction seats 7 are arranged on the side of the larger end of the T-shaped saddle 8 close to the smaller end, and the larger end of the T-shaped saddle 8 is in contact with the supporting cast iron table 4.
Further, in order to better implement the present invention, the cylindrical assembly 14 includes a bar magnet 15 mounted on the support cast iron stand 4 and a cylindrical assembly magnetically connected to the bar magnet 15; the to-be-detected segmented rack 16 is arranged between the bar magnet 15 and the cylindrical combined part and is magnetically connected with the bar magnet 15.
Further, in order to better implement the present invention, the cylindrical combined part includes a cylindrical string link 142, and a plurality of precision cylinders 141 sleeved on the outer side surface of the cylindrical string link 142, and the axis of the cylindrical string link 142 is perpendicular to the axis of the precision cylinders 141.
Further, in order to better realize the invention, two bosses 111 are arranged on one side of the stepped threaded shaft 11 close to the mounting plate, the two bosses 111 and the stepped threaded shaft 11 form a concave bayonet 112, and a concave clamping groove 101 matched with the concave bayonet 112 is arranged on one side of the mounting plate close to the stepped threaded shaft 11; the female bayonet 112 fits within the female bayonet 101.
Further, in order to better implement the present invention, the end of the stepped threaded shaft 11 remote from the mounting plate is provided with a micro-stroke adjustment knob 10.
Further, for better implementation of the invention, the mounting plate is a T-shaped mounting plate 1, and the larger end of the T-shaped mounting plate 1 is slidably mounted on the linear guide rail 2.
Further, in order to better implement the present invention, a slider 3 slidably mounted on the linear guide rail 2 is disposed on a side of the larger end of the T-shaped mounting plate 1 near the linear guide rail 2; and a dovetail groove is formed in one end, close to the linear guide rail 2, of the sliding block 3, and the linear guide rail 2 is arranged in the dovetail groove.
It should be noted that, by the above improvement, the number of the sliders 3 is two and symmetrically arranged at the larger end along the smaller end; the dovetail groove of the sliding block 3 and the dovetail groove structure of the linear guide rail 2 form a sliding pair, and the precise matching of the linear guide rail 2 and the sliding block 3 ensures the consistency of the movement of the sliding block 3 and the geometric precision of the linear guide rail 2.
The T-shaped mounting plate 1 and the sliding block 3 are fastened and connected into a whole through bolts. The bolts pass through the through holes of the T-shaped mounting plate 1 and are screwed into the reserved threaded holes on the surface of the sliding block 3, so that the T-shaped mounting plate 1 and the sliding block 3 are integrated, the T-shaped mounting plate 1 only has the freedom of moving along the direction of the linear guide rail 2, and the precision of other constraint directions is jointly ensured by the linear guide rail 2 and the sliding block 3.
When the product to be measured is the segmented rack 16 to be measured, as the cylindricity of the precision cylinder 141 required by the assembly precision of the segmented rack 16 to be measured is usually about 1 micron, the diameter of the precision cylinder 141 is required to ensure that the tangent line is positioned near the tooth-shaped center line of the segmented rack 16 to be measured when the precision cylinder is attached to the segmented rack 16 to be measured; after the to-be-detected segmented rack 16 achieves coarse positioning relative to the support cast iron table 4 through the basic positioning boss on the support cast iron table 4, the clamping screw is screwed into the through hole of the to-be-detected segmented rack 16, so that the to-be-detected segmented rack 16 does not easily slide, but can still be adjusted in position through hammer knocking.
After the basic clamping state is reached, each precise cylinder 141 of the cylindrical combined part is sequentially placed into a tooth slot to be detected, and then the bar magnet 15 is placed on the back surface of the to-be-detected segmented rack 16 to be consistent with the position where the cylindrical combined part 14 is placed. The precision cylinder 141 will self-adaptively closely engage the segmented rack tooth form and maintain a relatively stable boundary condition under the force of the bar magnet 15.
By the method, the tooth form error to be detected of the to-be-detected segmented racks 16, particularly the transition position tooth form of the two to-be-detected segmented racks 16, can be converted into the height difference of the precise cylinder 141.
The dial indicator connecting rod 17 is a common articulated adjusting connecting rod, the number of specific joints can be determined with more detection environments and required degrees of freedom, and the final purpose needs to ensure that when the height of the cylindrical combined component 14 is detected, the contact of the dial indicator 13 is perpendicular to the back of a product to be detected as much as possible so as to install a reference. The dial indicator magnetic attraction seat 18 can be used for opening or closing magnetic attraction through the adjusting knob so as to realize quick assembly and disassembly of the precise measuring mechanism.
When the assembly and adjustment precision of the to-be-measured segmented rack 16 is specifically measured, the highest point of the precision cylinder 141 attached to the corresponding tooth form in the to-be-measured segmented rack 16 is measured through the dial indicator 13 in the precision measuring mechanism to reflect the position precision of the tooth form, the highest point of all the precision cylinders 141 in the cylinder combination part is measured through the dial indicator 13, and the deviation condition of the corresponding position reading passing through the reading of the highest point of all the precision cylinders 141 in the cylinder combination part is recorded to reflect the assembly precision of the to-be-measured segmented rack 16 and the adjacent segmented racks.
The precise measuring unit has the advantages that the precise cylinder 141 is uniformly and stably attached to the tooth shape of the segmented rack 16 to be measured, so that the measuring precision and stability are good.
In addition, because the measuring cylinder combined part is automatically attached to the tooth form to be measured through the bar magnet 15, the assembly and adjustment efficiency is very high, and the measuring cylinder combined part comprises a plurality of precise cylinders 141, the measurement of the situation of a plurality of tooth form positions can be realized through one-time assembly and adjustment, and therefore the measuring efficiency of the device is quite high.
The specific motion adjusting process of the large-stroke motion mechanism can be described as rotating the micro-stroke adjustment handle 10 and rotating the stepped threaded shaft 11 together, and the stepped threaded shaft 11 generates a spiral motion under the action of the spiral motion pair formed by the stepped threaded shaft 11 and the T-shaped saddle 8.
When the relative position of the stepped threaded shaft 11 relative to the large-stroke movement mechanism is set, the position and the posture of the T-shaped saddle 8 are adjusted on the support cast iron table 4, so that the concave bayonet 112 of the stepped threaded shaft 11 is ensured to be positioned in the concave clamping groove 101 of the T-shaped mounting plate 1, and at the moment, the diameter of the concave bayonet 112 of the threaded Wen Jieti shaft is smaller than the width of the concave clamping groove 101 of the T-shaped mounting plate 1, so that the stepped threaded shaft 11 can freely rotate.
Meanwhile, the diameter of the boss 111 of the stepped threaded shaft 11 is larger than the width of the concave clamping groove 101 of the T-shaped mounting plate 1, so that the stepped threaded shaft 11 cannot independently move axially, and the stepped threaded shaft 11 must overcome the resistance of the T-shaped mounting plate 1 to drive the large-stroke movement mechanism to move together to realize the axial movement.
On the other hand, the precise measuring mechanism is fastened with the large-stroke movement mechanism through the dial indicator magnetic attraction seat 18, so that the movement of the precise measuring mechanism can be regulated by rotating the stepped threaded shaft 11, and the tooth form precision of the segmented rack 16 to be measured within the coverage range of the high-precision cylindrical combination unit is measured.
Because the movement stroke of the translation shaft of the large-stroke gantry numerical control machine tool is usually larger, a plurality of sections of to-be-detected segmented racks 16 are sequentially connected and combined to form a transmission chain of the whole translation shaft, and therefore the measurement of tooth shapes in all movement strokes of the translation shaft of the machine tool cannot be realized only by adjusting the micro-stroke adjusting mechanism once.
At this time, the magnetic force suction seats 7 at two ends of the T-shaped saddle 8 can be closed, the position of the micro-stroke adjusting mechanism is changed through the micro-stroke adjusting handle 10, meanwhile, the position of the sliding block 3 on the linear guide rail 2 is pushed to the next measuring area by adjusting the cylindrical combined part, so that the precise measuring mechanism, the large-stroke moving mechanism and the micro-stroke adjusting mechanism are combined again to the next measuring area to form the measuring mode, the tooth form precision detection of the to-be-detected segmented rack 16 is continuously carried out, and then the installation position of the segmented rack is locally adjusted according to the detection result until the position precision of the whole segment of segmented rack meets the requirement. Meanwhile, the T-shaped mounting plate 1 is provided with a symmetrical slotting structure, and micro-stroke adjusting mechanisms can be arranged on two sides of the T-shaped mounting plate 1 according to requirements so as to adapt to adjustment and detection of different positions.
As shown in fig. 2 and 3, the dial gauge 13 of the precision detecting instrument of the segmented rack 16 to be detected is fastened on the side end surface of the T-shaped mounting plate 1 through the dial gauge connecting rod 17 and the dial gauge magnetic force suction seat 18, so that the precision measuring mechanism of the precision detecting device for installing and adjusting the segmented rack of the flat moving shaft of the large-stroke gantry machine tool is formed.
The micro-stroke adjusting mechanism has the advantages that the linear motion of the precise measuring mechanism is adjusted through the rotary motion of the hand, so that higher linear movement resolution can be realized, the highest point of the precise cylinder 141 to be measured can be rapidly captured, meanwhile, the tooth shape of the segmented rack 16 to be measured can be measured within the coverage range of the cylindrical combined part by single measurement, and the measuring efficiency is high.
Other portions of the present embodiment are the same as those of the above embodiment, and thus will not be described again.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (6)
1. The utility model provides a precision detection device is transferred to large-stroke planer lathe translation axle segmentation rack, installs on supporting cast iron platform (4), its characterized in that: the device comprises a large-stroke movement mechanism, a precise measurement mechanism, a micro-stroke adjustment mechanism and a cylindrical combination part (14), wherein the large-stroke movement mechanism is slidably arranged on a support cast iron table (4), the precise measurement mechanism is connected with the large-stroke movement mechanism, the micro-stroke adjustment mechanism is used for fine adjustment of the large-stroke movement mechanism, and the cylindrical combination part (14) is arranged on the support cast iron table (4) and is used for positioning a product to be measured; the large-stroke movement mechanism comprises a linear guide rail (2) arranged on a support cast iron table (4) and a mounting plate arranged on the linear guide rail (2) in a sliding manner; the precision measurement mechanism comprises a dial indicator (13) in contact with the cylindrical combination unit, a dial indicator connecting rod (16) connected with the dial indicator (13) and a dial indicator magnetic suction seat (18) connected with the mounting plate, and the dial indicator connecting rod (16) is arranged on the dial indicator magnetic suction seat (18); the dial indicator connecting rod (16) is a joint type adjusting connecting rod; the micro-stroke adjusting mechanism comprises a T-shaped saddle (8), a stepped threaded shaft (11) penetrating through the smaller end of the T-shaped saddle (8) and connected with the mounting plate, a micro-stroke adjusting handle (10) arranged on one side of the stepped threaded shaft (11) far away from the mounting plate, and two magnetic force suction seats (7) symmetrically arranged on the T-shaped saddle (8), wherein the magnetic force suction seats (7) are arranged on one side, close to the smaller end, of the larger end of the T-shaped saddle (8), and the larger end of the T-shaped saddle (8) is in contact with the supporting cast iron table (4); the T-shaped saddle (8) is made of magnetic metal, rectangular grooves for exactly placing the magnetic force suction seats (7) are formed in two ends of the T-shaped saddle, a switch knob of each magnetic force suction seat (7) faces upwards, the bottom of the T-shaped saddle (8) is smooth and contacts with the upper surface of the support cast iron table (4), the T-shaped saddle (8) can be fixed relative to the support cast iron table (4) under the action of magnetic attraction force by opening the knob of each magnetic force suction seat (7), an acting point can be provided for adjusting a large-stroke movement mechanism, a threaded through hole is formed in the middle of the T-shaped saddle (8), and the threaded through hole can be matched with a stepped threaded shaft (11); the cylindrical combined part (14) comprises a bar magnet (15) arranged on the supporting cast iron table (4) and a cylindrical combined part magnetically connected with the bar magnet (15); the product to be tested is arranged between the bar magnet (15) and the cylindrical combined part and is magnetically connected with the bar magnet (15).
2. The large-stroke gantry machine tool translational shaft sectional rack adjusting precision detection device according to claim 1, wherein: the cylindrical combined part comprises a cylindrical serial connecting rod (142) and a plurality of precise cylinders (141) sleeved on the outer side face of the cylindrical serial connecting rod (142), and the axial lead of the cylindrical serial connecting rod (142) is perpendicular to the axial lead of the precise cylinders (141).
3. The large-stroke gantry machine tool translational shaft sectional rack adjusting precision detection device according to claim 2, wherein: two bosses (111) are arranged on one side, close to the mounting plate, of the stepped threaded shaft (11), the two bosses (111) and the stepped threaded shaft (11) form a concave bayonet (112), and a concave clamping groove (101) matched with the concave bayonet (112) is formed on one side, close to the stepped threaded shaft (11), of the mounting plate; the concave bayonet (112) is arranged in the concave clamping groove (101).
4. The large-stroke gantry machine tool translational shaft sectional rack adjusting precision detection device according to claim 3, wherein: and one end of the stepped threaded shaft (11) far away from the mounting plate is provided with a micro-stroke adjusting handle (10).
5. The large-stroke gantry machine tool translational shaft sectional rack assembly and adjustment precision detection device according to any one of claims 1 to 4, wherein: the mounting plate is a T-shaped mounting plate (1), and the larger end of the T-shaped mounting plate (1) is slidably mounted on the linear guide rail (2).
6. The large-stroke gantry machine tool translational shaft sectional rack adjusting precision detection device according to claim 5, wherein: a sliding block (3) which is slidably arranged on the linear guide rail (2) is arranged at one side of the larger end of the T-shaped mounting plate (1) close to the linear guide rail (2); one end of the sliding block (3) close to the linear guide rail (2) is provided with a dovetail groove, and the linear guide rail (2) is arranged in the dovetail groove.
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| CN201810866812.2A CN108772749B (en) | 2018-08-01 | 2018-08-01 | Large-stroke gantry machine tool translational shaft sectional rack assembling and adjusting precision detection device |
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| CN201810866812.2A CN108772749B (en) | 2018-08-01 | 2018-08-01 | Large-stroke gantry machine tool translational shaft sectional rack assembling and adjusting precision detection device |
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| CN108772749A CN108772749A (en) | 2018-11-09 |
| CN108772749B true CN108772749B (en) | 2023-10-03 |
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| CN110738897A (en) * | 2019-10-22 | 2020-01-31 | 沈阳美科泰精密机电科技有限公司 | Mechanical part positioning and geometric precision measurement training platform |
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