CN112284313B - High-precision double-measuring-head measuring block comparator - Google Patents
High-precision double-measuring-head measuring block comparator Download PDFInfo
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- CN112284313B CN112284313B CN202011165143.XA CN202011165143A CN112284313B CN 112284313 B CN112284313 B CN 112284313B CN 202011165143 A CN202011165143 A CN 202011165143A CN 112284313 B CN112284313 B CN 112284313B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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Abstract
The invention discloses a high-precision double-measuring-head measuring block comparator, which comprises: the base is provided with an upper measuring head adjusting assembly, a lower measuring head adjusting assembly, a double workbench and a workbench adjusting assembly, the upper measuring head adjusting assembly is provided with an upper measuring head, the lower measuring head adjusting assembly is provided with a lower measuring head, the upper measuring head adjusting assembly is fixed on the base, and the upper measuring head adjusting assembly adjusts the movement of the upper measuring head in the X-axis direction, the Y-axis direction and the Z-axis direction; a boss is arranged on the base along the Y-axis direction, and the lower measuring head adjusting component is arranged on one side of the boss and used for adjusting the movement of the lower measuring head in the X-axis direction and the Y-axis direction; the workbench adjusting assembly is movably connected to the other side of the boss, and the double workbenches are arranged on the workbench adjusting assembly and are positioned above the boss; the workbench adjusting assembly adjusts the double worktables to move in the X-axis direction and the Y-axis direction relative to the base.
Description
Technical Field
The invention relates to the technical field of high-precision instruments and equipment, in particular to a high-precision double-measuring-head measuring block comparator.
Background
The gauge block comparator is a measuring instrument for comparing the lengths of the gauge blocks to be measured. In the precise displacement measurement, more than 95% of gauge block measurement is comparison measurement, and the length differential of two measured pieces is measured by adopting a Ubbelohde interferometer or other types of comparison measurement instruments to obtain a measurement result, so that the method is widely applied to the field of measurement. However, the high-precision gauge block comparator commonly used in the prior art always adopts a single-gauge-head measuring form, the upper gauge head is in contact with the upper surface of the gauge block during measurement, and the lower surface of the gauge block is in contact with the workbench for measurement.
Therefore, the development of a true high-resolution and high-precision gauge block comparator is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-precision double-measuring-head measuring block comparator which adopts double measuring heads of an upper measuring head and a lower measuring head to carry out measurement, respectively reads the numerical values of a standard measuring block and a measured measuring block, calculates the difference value between the measured measuring block and the standard measuring block, and has the advantages that the measurement principle conforms to the international standard and the measurement resolution and precision are high.
In order to achieve the purpose, the invention is realized by the following technical scheme: a high accuracy dual gauge block comparator comprising: the base is provided with an upper measuring head adjusting assembly, a lower measuring head adjusting assembly, a double workbench and a workbench adjusting assembly, the upper measuring head adjusting assembly is provided with an upper measuring head, the lower measuring head adjusting assembly is provided with a lower measuring head, the upper measuring head adjusting assembly is fixed on the base, and the upper measuring head adjusting assembly adjusts the movement of the upper measuring head in the X-axis direction, the Y-axis direction and the Z-axis direction; a boss is arranged on the base along the Y-axis direction, and the lower measuring head adjusting component is arranged on one side of the boss and used for adjusting the movement of the lower measuring head in the X-axis direction and the Y-axis direction; the workbench adjusting assembly is movably connected to the other side of the boss, and the double workbenches are arranged on the workbench adjusting assembly and are positioned above the boss; the workbench adjusting assembly adjusts the double worktables to move in the X-axis direction and the Y-axis direction relative to the base.
Further, the upper gauge head adjusting assembly comprises: the first screw rod and the upright column are arranged on the base in parallel, one end of the first screw rod is provided with a first knob, and the other end of the first screw rod penetrates through a fourth threaded hole in the sliding block and then is connected to the base; the sliding block is slidably sleeved on the upright post; the first fine adjusting piece is detachably arranged on the sliding block; the sliding block is provided with a screw in a matching way, and the screw can lock the sliding block on the upright post.
Furthermore, the lower measuring head adjusting assembly is a second fine adjusting piece, and the second fine adjusting piece is fixed through a first strip-shaped hole in the upper portion of the second fine adjusting piece.
Further, the first trim and the second trim each include: the first base plate and the first adjusting plate are arranged in parallel, and the bottoms of the first base plate and the first adjusting plate are connected through a first elastic bridge; the first adjusting plate is also vertically connected with the second base plate, the top of the second base plate is connected with the second adjusting plate through a second elastic bridge, and the second adjusting plate and the second base plate are arranged in parallel; a first threaded hole and a first through hole are formed in the first adjusting plate and the second substrate, and a second threaded hole is formed in the position, corresponding to the first through hole, of the first substrate; a first screw penetrates through the first threaded hole and then abuts against the first substrate; and a second screw penetrates through the first through hole and then is screwed into the second threaded hole.
Furthermore, a second through hole is formed in the second adjusting plate, and the upper measuring head is installed in the second through hole; and a gap is further arranged on the side surface of the second adjusting plate corresponding to the second through hole and communicated with the second through hole, at least one locking hole group is arranged at the position of the gap of the second adjusting plate and comprises a third through hole arranged on one side of the gap and a third threaded hole arranged on the other side of the gap, and a third screw penetrates through the third through hole and then is screwed into the third threaded hole of the second adjusting plate.
Furthermore, a first small boss is arranged on the sliding block along the X axis, and a first fine adjustment piece of the upper measuring head adjusting assembly moves along the first small boss through a first strip-shaped hole on the first fine adjustment piece to realize the adjustment in the X axis direction; the base is provided with a second small boss, and a second fine adjustment piece of the lower measuring head adjusting assembly moves along the second small boss through a first strip-shaped hole in the second fine adjustment piece to achieve Y-axis direction adjustment.
Furthermore, each workbench corresponding to the double workbenches on the boss is provided with a guide pin corresponding to the lower measuring head and the guide pin, each workbench is provided with two T-shaped waist grooves, and the workbench adjusting assembly adjusts the double workbenches to move in the X-axis direction and the Y-axis direction along the two T-shaped waist grooves.
Further, the table adjustment assembly includes: the adjusting mechanism comprises two transverse sliding blocks, two sliding seats and an adjusting unit, wherein the two transverse sliding blocks are arranged side by side, the two sliding seats are arranged side by side, the sliding seats are L-shaped, each transverse sliding block is embedded on each L-shaped sliding seat, a sliding groove is formed in each transverse sliding block along the Y-axis direction and corresponds to the sliding groove, and a sliding pin is arranged on each sliding seat; each workbench of the double workbenches is fixedly connected with a transverse sliding block; the adjusting unit is movably connected to the two sliding seats, and the two sliding seats are adjusted to drive the two working tables to move along the X axis and the Y axis.
Further, the adjusting unit includes: the support device comprises a fixed plate, a plurality of support rods and two second screw rods, wherein each second screw rod is connected with the fixed plate to form a screw pair; one end of each supporting rod is fixed on the fixing plate, and the other end of each supporting rod is fixed on the boss; and two sides of each screw rod are respectively provided with a guide rod, one end of each guide rod is fixed on the fixed plate, and the other end of each guide rod penetrates through the sliding seat in a sliding manner and then is fixed on the lug boss.
Furthermore, each workbench and each transverse sliding block of the double workbench are respectively provided with a second strip-shaped hole at the same position, the sliding seat is provided with a fifth threaded hole, and a third knob penetrates through the second strip-shaped holes on the workbench and the transverse sliding block and then is locked in the fifth threaded hole on the sliding seat.
By adopting the scheme, the high-precision double-measuring-head measuring block comparator provided by the invention has the advantages that the postures of the upper measuring head and the lower measuring head are respectively adjusted by arranging the upper measuring head adjusting component and the lower measuring head adjusting component, the lower measuring head is fixed during measurement, the upper measuring head can be lifted and adjusted in the Z axial direction to realize measurement of measuring blocks with different heights, and the measurement precision does not excessively depend on the precision of a workbench. Meanwhile, the arrangement of the double working tables ensures the contrast measurement of the standard gauge block and the measured gauge block, and is convenient for the adjustment of the verticality of the upper measuring head and the double working tables.
Drawings
Fig. 1 is a schematic diagram of a high-precision dual-gauge head comparator according to the present invention.
Fig. 2 is a schematic diagram of a high-precision dual-gauge head block comparator according to the present invention.
Fig. 3 is a first schematic diagram of an upper gauge head adjusting assembly or a lower gauge head adjusting assembly of the high-precision dual-gauge-head block comparator according to the present invention.
Fig. 4 is a schematic diagram ii of an upper gauge head adjusting assembly or a lower gauge head adjusting assembly of the high-precision dual-gauge-head block comparator according to the present invention.
Fig. 5 is a schematic cross-sectional view in the X-axis direction of a high-precision dual-gauge block comparator according to the present invention. The labels in the figures are:
1-a base, 2-an upper measuring head adjusting component, 3-a lower measuring head adjusting component, 4-a double worktable, 5-a worktable adjusting component, 200-an upper measuring head, 300-a lower measuring head, 10-a boss, 6-a first screw rod, 7-a slide block, 8-a column, 61-a first knob, 71-a screw, 20-a first fine adjusting component, 21-a first base plate, 22-a first adjusting plate, 23-a second base plate, 24-a second adjusting plate, 25-a first elastic bridge, 26-a second elastic bridge, 27-a first threaded hole, 28-a first through hole, 29-a second through hole, 241-a slit, 243-a third threaded hole, 211-a first strip-shaped hole, 72-a first small boss and 12-a second small boss, 31-guide pin, 43-T-shaped waist groove, 51-transverse sliding block, 52-sliding seat, 53-adjusting component, 54-second strip-shaped hole, 55-sliding groove, 531-adjusting plate, 532-supporting rod, 533-second screw rod, 534-guide rod, 42-third knob, 9-standard measuring block and 535-fourth knob.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1-5, the present invention provides a high-precision dual-probe gauge block comparator, comprising: the measuring head adjusting device comprises a base 1, wherein an upper measuring head adjusting component 2, a lower measuring head adjusting component 3, a double workbench 4 and a workbench adjusting component 5 are arranged on the base 1, an upper measuring head 200 is installed on the upper measuring head adjusting component 2, a lower measuring head 300 is installed on the lower measuring head adjusting component 3, the upper measuring head adjusting component 2 is fixed on the base 1, and the upper measuring head adjusting component 2 adjusts the upper measuring head 200 to move along the X-axis direction, the Y-axis direction and the Z-axis direction; a boss 10 is arranged on the base 1 along the Y-axis direction, the upper measuring head adjusting component 2 and the lower measuring head adjusting component 3 are installed on one side of the boss 10, the workbench adjusting component 5 is movably connected to the other side of the boss 10, and the double workbenches 4 are installed on the workbench adjusting component 5 and are located above the boss 10; the workbench adjusting assembly 5 adjusts the double workbench 4 to move in the X-axis direction and the Y-axis direction relative to the base 1. This boss 10 sets up gauge head adjusting part 3 and workstation adjusting part 5 under the installation of being convenient for, does benefit to and promotes this characteristic of product compact structure to, the basal area of the structure of boss 10 below is greater than the basal area of boss 10, does benefit to the steadiness that promotes whole equipment. In this embodiment, the upper gauge head 200 and the lower gauge head 300 are both high-precision displacement sensors.
Specifically, as shown in fig. 1 and 2, the upper gauge head adjusting assembly 2 includes: first screw rod 6, slider 7, stand 8 and first fine setting 20, first screw rod 6 with stand 8 parallel arrangement in on the base 1, first screw rod 6 one end is equipped with a first knob 61, and the other end passes connect behind the screw hole on the slider 7 in on the base 1. The sliding block 7 is matched with the first screw rod 6 to form a screw pair. In addition, the sliding block 7 is slidably sleeved on the upright post 8 to form a sliding pair; the driving of the slider 7 is realized by turning the first knob 61 so that it moves along the column 8 (i.e. Z-axis direction). The first fine-adjustment part 20 is detachably mounted on the slider 7, specifically, the first fine-adjustment part 20 can be connected to the slider 7 by passing a screw or a screw through the first strip-shaped hole 211, when the upper measuring head 200 is to be adjusted, the screw or the screw on the first strip-shaped hole 211 is loosened, then the first fine-adjustment part 20 is pushed to slide along the first strip-shaped hole 211 on the first fine-adjustment part, so that the position adjustment of the first fine-adjustment part is realized, and after the position is adjusted, the screw or the screw is screwed down. A first small boss 72 is arranged on the slide block 7 along the X axis, and the first fine adjustment member 20 can be adjusted along the first small boss 72 (i.e. the X axis direction) through the first strip-shaped hole 211. A screw 71 is arranged on the sliding block 7 in a matched manner, the sliding block 7 can be locked on the upright post 8 by the screw 71, and preferably, a second knob is connected to the end of the screw 71, so that the sliding block 7 can be conveniently locked and unlocked.
As shown in fig. 3 and 4, the first trim 20 and the second trim include: the device comprises a first base plate 21, a first adjusting plate 22, a second base plate 23 and a second adjusting plate 24, wherein the first base plate 21 and the first adjusting plate 22 are arranged in parallel, and the bottoms of the first base plate 21 and the first adjusting plate 22 are connected through a first elastic bridge 25; one side of the first adjusting plate 22 is also vertically connected with the second base plate 23, the top of the second base plate 23 is connected with the second adjusting plate 24 through a second elastic bridge 26, and the second adjusting plate 24 and the second base plate 23 are arranged in parallel; a first threaded hole 27 and a first through hole 28 are formed in each of the first adjusting plate 22 and the second base plate 23, and a second threaded hole is formed in the position, corresponding to the first through hole 28, of the first base plate 21; a screw penetrates through the first threaded hole 27 and abuts against the first base plate 21, and if the screw is contacted and jacked with the first base plate 21 and then is screwed continuously, the included angle between the first base plate 21 and the first adjusting plate 22 is increased; another screw is threaded into the second threaded hole after passing through the first through hole 28, and the screw is further tightened after passing through the first through hole 28, so that the included angle between the first base plate 21 and the first adjusting plate 22 is reduced, and both the adjusting modes play roles in adjusting the posture of the upper measuring head 200 fixed on the second adjusting plate 24 along two opposite directions of the Y axis.
Further, a second through hole 29 is formed in the second adjusting plate 24, and the upper measuring head 200 is installed in the second through hole 29; the side surface of the second adjusting plate 24 is further provided with a gap 241 corresponding to the second through hole 29, the gap 241 is communicated with the second through hole 29, at least one locking hole group is arranged at the position of the gap 241 of the second adjusting plate 24, the locking hole group comprises a third through hole 243 arranged on one side of the gap 241 and a third threaded hole (not marked) arranged on the other side of the gap, and a third screw passes through the third through hole 243 and is screwed into the third threaded hole of the second adjusting plate 24 to realize the locking operation of the upper measuring head 200.
The same as the first base plate 21 and the first adjusting plate 22, and the same adjusting principle of the second base plate 23 and the second adjusting plate 24 as the first base plate 21 and the first adjusting plate 22, the posture adjustment of the upper measuring head 200 in the X-axis direction is realized, and details are not repeated.
The lower measuring head adjusting assembly 3 is a second fine adjusting piece, and the second fine adjusting piece of the lower measuring head adjusting assembly 3 moves along the second small boss 12 through the strip-shaped hole 211 on the second fine adjusting piece, so that the lower measuring head adjusting assembly 3 can be adjusted along the Y-axis direction.
As shown in fig. 1, each of the two work tables 4 on the boss 10 is provided with a guide pin 31, the two work tables 4 are respectively provided with two T-shaped waist grooves 43 corresponding to the lower measuring head 300 and the guide pin 31, and the work table adjusting assembly 5 adjusts the two work tables 4 to move along the two T-shaped waist grooves 43 in the X-axis direction and the Y-axis direction. The T-shaped waist groove 43 and the guide pin 31 play a role in limiting the movement of the double worktable 4, so that the double worktable 4 can only move along the X-axis direction and the Y-axis direction of the T-shaped groove, meanwhile, the T-shaped waist groove corresponding to the lower measuring head leaves enough adjusting space for the lower measuring head 300, and the lower measuring head 300 is protected from interfering with the worktable, so that the lower measuring head 300 is damaged.
Specifically, the table adjustment assembly 5 includes: the adjusting mechanism comprises two transverse sliding blocks 51, two sliding seats 52 and an adjusting unit 53, wherein the two transverse sliding blocks 51 are arranged side by side, the two sliding seats 52 are arranged side by side, the sliding seats 52 are L-shaped, each transverse sliding block 51 is embedded on each L-shaped sliding seat, a sliding groove 55 is arranged on each transverse sliding block 51 along the Y-axis direction and corresponds to the sliding groove 55, and a sliding pin 522 is arranged on each sliding seat 52. In addition, each workbench and each transverse sliding block 51 of the double workbench 4 are provided with a second strip-shaped hole 54 at the same position, the sliding base 51 is provided with a threaded hole, and a third knob 42 passes through the second strip-shaped hole 54 on one workbench and one transverse sliding block 51 and then is locked in the threaded hole on one sliding base 52. The third knob 42 locks the position of the cross slide 51 to the slide 51 after the cross slide 51 and the table have been adjusted in the Y-axis direction. Preferably, as shown in fig. 5, the sliding groove 55 and the sliding pin 522 may be provided in two sets in different directions, so that the relative movement between the lateral slider 51 and the slider 52 is more stable. Each workbench of the double workbench 4 is fixedly connected with a transverse sliding block 51, and each transverse sliding block 51 drives each workbench to move along the Y-axis direction; the adjusting unit 53 is movably connected to the two sliding bases 52, and adjusts the two sliding bases 52 to drive the two working tables to move in the X-axis direction.
Further, the adjusting unit 53 includes: the sliding device comprises a fixed plate 531, a plurality of support rods 532 and two second screws 533, wherein each second screw 533 is connected with the fixed plate 531 to form a screw pair, and a sliding seat 52 can be adjusted to move along the X-axis direction through one second screw 533, so that a transverse sliding block 51 and a workbench are driven to move along the X-axis direction. One end of each support bar 532 is fixed to the fixing plate 531, and the other end is fixed to the boss 10, thereby supporting the whole adjusting unit 53. Two sides of each screw 533 are respectively provided with a guide rod 534, one end of each guide rod 534 is fixed on the fixing plate 531, the other end of each guide rod 534 slidably penetrates through the sliding seat 52 and then is fixed on the boss 10, and the guide rods 534 also play a role in supporting the sliding seat 52, so that the sliding seat 52 is more stable when moving along the X axis. Preferably, the second screw 533 penetrates through the fixing plate 531 and is fixedly connected to a fourth knob 535, and by rotating the fourth knob 535, the sliding base 52 is driven to move along the X-axis, so as to drive the transverse sliding block 51 and the dual-stage 4 to move along the X-axis direction, thereby realizing adjustment of the dual-stage 4 along the X-axis direction.
The invention discloses a method for adjusting the assembly precision of a high-precision double-side head gauge block comparator, which comprises the following steps:
(1) the Z-axis direction coarse adjustment sliding block 7, the first fine adjustment part for adjusting the upper measuring head component 2 in the X-axis direction and the second fine adjustment part for adjusting the lower measuring head adjustment component 3 in the Y-axis direction enable the upper measuring head 200 and the lower measuring head 300 to be basically centered.
(2) And (3) lifting the slide block 7, placing the standard gauge block 9 on a workbench 41 of the double workbench 4, enabling the standard gauge block 9 to be parallel to the T-shaped waist groove 43, and adjusting the slide block 7 to enable the upper measuring head 200 to be in contact with the upper surface of the standard gauge block 9 and the indication value of the upper measuring head 200 to be in the middle of the maximum measuring range.
(3) And adjusting the relative position of the lower measuring head 300 and the second fine adjusting part of the lower measuring head adjusting assembly 3 in the vertical direction, so that the lower measuring head 300 is in contact with the lower surface of the standard gauge block 9 and the indication value of the lower measuring head 300 is in the middle value of the maximum measuring range.
(4) And (3) roughly adjusting the posture of the first fine adjustment part of the upper measuring head adjusting assembly 2, so that the perpendicularity error of the upper measuring head 200 and the upper surface of the standard gauge block 9 is smaller than the maximum adjustment range of the first fine adjustment part.
(5) Measuring head adjusting assembly for fine adjustment in X-axis direction2, the upper measuring head 200 is always in contact with the upper surface of the standard gauge block 9, the indication value of the upper measuring head 200 is the largest, and the upper measuring head 200 is always in contact with the standard gauge block 9 during adjustment. Setting the indication value of the upper gauge 200 to zero, adjusting a table 41 to move in the X-axis direction, and recording the indication value of the upper gauge 200 as X every 2mmiAnd finely adjusting the upper measuring head 200 to ensure that the fluctuation quantity of all indication values in all strokes in the X-axis direction is less than 0.1 micrometer. And finely adjusting the first fine adjustment part of the upper measuring head adjustment assembly 2 in the Y-axis direction, so that the upper measuring head 200 is always in contact with the upper surface of the standard gauge block 9, the indication value of the upper measuring head 200 is the largest, and the upper measuring head 200 is always in contact with the standard gauge block 9 during adjustment. Setting the indication value of the upper gauge 200 to zero, adjusting a table 41 to move in the Y-axis direction, and recording the indication value Y of the upper gauge 200 every 2mmiAnd finely adjusting the upper measuring head 200 to ensure that the fluctuation quantity of all indication values in all strokes of the Y-axis direction is less than 0.1 micrometer.
(6) And (5) adjusting a second fine adjustment piece of the lower measuring head adjusting assembly 3 according to the adjusting method in the step (5) to ensure that all indication value fluctuation amounts are smaller than 0.1 micrometer.
(7) And removing the standard gauge block 9, adjusting the slide block 7 in the vertical direction, adjusting the first fine adjustment part of the upper measuring head adjusting component 2 in the X-axis direction, and adjusting the second fine adjustment part of the lower measuring head adjusting component 3 in the Y-axis direction, so that the upper measuring head 200 and the lower measuring head 300 are basically centered, and the spherical measuring caps of the two measuring heads are in mutual contact. The first fine-tuning piece of the upper measuring head adjusting assembly 2 is adjusted along the first small boss 72, when the indication value of the upper measuring head 200 is the maximum, the first fine-tuning piece of the upper measuring head adjusting assembly 2 is fixedly locked on the sliding block 7, and the spherical measuring caps of the two measuring heads are always kept in contact during adjustment. The second fine-tuning piece of the lower measuring head adjusting component 3 is adjusted along the second small boss 12, when the indication value of the lower measuring head 300 is the maximum, the second fine-tuning piece of the lower measuring head adjusting component 3 is fixedly locked on the base 1, and the spherical measuring caps of the two measuring heads are always kept in contact during adjustment.
Through the steps, the centering precision of the upper measuring head 200 and the lower measuring head 300 is guaranteed, meanwhile, the vertical precision of the two measuring heads and the workbench 41 is very high, and the precision error is not more than 1 um.
It should be noted that, the indication error and the indication range of the gauge block comparator are the most important technical indexes, and the indication range and the indication error are closely related. Generally, when the indication range is small, the indication error is small, and conversely, when the indication range is large, the indication error is large. The two indexes are provided together, and the metering performance of the instrument can be more completely indicated.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "X-axis", "Y-axis", "Z-axis", etc., indicate orientations or positional relationships based on the drawings of the present invention, and are used merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In summary, the invention provides a high-precision dual-measuring-head measuring block comparator, which adjusts the postures of the upper and lower measuring heads by arranging the upper measuring head adjusting assembly and the lower measuring head adjusting assembly respectively, so as to more accurately realize the centering of the postures of the upper and lower measuring heads, and ensure the centering precision of the two measuring heads and the perpendicularity of the two measuring heads and the plane of the workbench. During measurement, the lower measuring head is fixed, the upper measuring head can be adjusted in a lifting mode along the Z axis so as to measure the measuring blocks with different heights, and the measuring accuracy does not excessively depend on the accuracy of the workbench. Meanwhile, the arrangement of the double working tables ensures the contrast measurement of the standard gauge block and the measured gauge block, and is convenient for the adjustment of the verticality of the upper measuring head, the lower measuring head and the double working tables. The design scheme of the invention ensures high-precision measurement of the gauge block comparator from multiple aspects.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A high accuracy dual gauge head gauge block comparator, comprising: the measuring head adjusting device comprises a base (1), wherein an upper measuring head adjusting component (2), a lower measuring head adjusting component (3), a double working table (4) and a working table adjusting component (5) are arranged on the base (1), an upper measuring head (200) is installed on the upper measuring head adjusting component (2), a lower measuring head (300) is installed on the lower measuring head adjusting component (3), the upper measuring head adjusting component (2) is fixed on the base (1), and the upper measuring head adjusting component (2) adjusts the movement of the upper measuring head (200) in the X-axis direction, the Y-axis direction and the Z-axis direction; a boss (10) is arranged on the base (1) along the Y-axis direction, and the lower measuring head adjusting component (3) is installed on one side of the boss (10) and used for adjusting the movement of the lower measuring head (300) in the X-axis direction and the Y-axis direction; the workbench adjusting component (5) is movably connected to the other side of the boss (10), and the double workbenches (4) are mounted on the workbench adjusting component (5) and located above the boss (10); the workbench adjusting assembly (5) adjusts the double worktables (4) to move in the X-axis direction and the Y-axis direction relative to the base (1); the upper measuring head adjusting assembly (2) comprises: the device comprises a first screw rod (6), a sliding block (7), an upright post (8) and a first fine adjustment piece (20), wherein the first screw rod (6) and the upright post (8) are arranged on the base (1) in parallel, one end of the first screw rod (6) is provided with a first knob (61), and the other end of the first screw rod passes through a fourth threaded hole in the sliding block (7) and then is connected to the base (1); the sliding block (7) is slidably sleeved on the upright post (8); the first fine adjusting piece (20) is detachably arranged on the sliding block (7); a screw (71) is arranged on the sliding block (7) in a matched manner, and the sliding block (7) can be locked on the upright post (8) by the screw (71); the lower measuring head adjusting component (3) is a second fine adjusting piece, and the second fine adjusting piece is fixed through a first strip-shaped hole (211) in the upper portion of the second fine adjusting piece; the first trim (20) and the second trim each comprise: the device comprises a first base plate (21), a first adjusting plate (22), a second base plate (23) and a second adjusting plate (24), wherein the first base plate (21) and the first adjusting plate (22) are arranged in parallel, and the bottoms of the first base plate and the second adjusting plate are connected through a first elastic bridge (25); the first adjusting plate (22) is also vertically connected with the second base plate (23), the top of the second base plate (23) is connected with the second adjusting plate (24) through a second elastic bridge (26), and the second adjusting plate (24) is arranged in parallel with the second base plate (23); a first threaded hole (27) and a first through hole (28) are formed in each of the first adjusting plate (22) and the second base plate (23), and a second threaded hole is formed in the position, corresponding to the first through hole (28), of the first base plate (21); a first screw penetrates through the first threaded hole (27) and then abuts against the first base plate (21); a second screw is threaded into the second threaded bore after passing through the first through bore (28).
2. A high accuracy dual gauge head comparator according to claim 1 wherein, the second adjusting plate (24) is provided with a second through hole (29), the upper gauge head (200) is mounted in the second through hole (29); correspond second through-hole (29), still be equipped with a gap (241) on the side of second regulating plate (24), gap (241) with second through-hole (29) are linked together second regulating plate (24) the position department of gap (241) is equipped with at least one locking punch combination, locking punch combination is including locating gap one side third through-hole (243) and locating the third screw hole of gap opposite side, a third screw pass behind third through-hole (243), twist extremely in the third screw hole of second regulating plate (24).
3. The high-precision double-gauge-head block comparator according to claim 1, wherein a first small boss (72) is arranged on the slide block (7) along the X-axis, and the first fine-tuning element (20) of the upper gauge head adjusting assembly (2) moves along the first small boss (72) through a first strip-shaped hole (211) on the first fine-tuning element to realize the adjustment in the X-axis direction; the base (1) is provided with a second small boss (12), and a second fine adjustment piece of the lower measuring head adjusting assembly (3) moves along the second small boss (12) through a first strip-shaped hole (211) in the second fine adjustment piece to realize Y-axis direction adjustment.
4. The high-precision double-gauge-head block comparator according to claim 1, wherein each of the two work tables (4) on the boss (10) is provided with a guide pin (31), each of the two work tables is provided with two T-shaped waist grooves (43) corresponding to the lower gauge head (300) and the guide pin (31), and the work table adjusting assembly (5) adjusts the movement of the two work tables (4) in the X-axis direction and the Y-axis direction along the two T-shaped waist grooves (43).
5. A high precision dual gauge head comparator according to claim 1 or 4, wherein the table adjustment assembly (5) comprises: the device comprises two transverse sliding blocks (51), two sliding seats (52) and an adjusting unit (53), wherein the two transverse sliding blocks (51) are arranged side by side, the two sliding seats (52) are arranged side by side, the sliding seats (52) are L-shaped, each transverse sliding block (51) is embedded on each L-shaped sliding seat, a sliding groove (55) is formed in each transverse sliding block (51) along the Y-axis direction and corresponds to the sliding groove (55), and a sliding pin is arranged on each sliding seat (52); each workbench of the double workbenches (4) is fixedly connected with a transverse sliding block (51); the adjusting unit (53) is movably connected to the two sliding seats (52), and the two sliding seats (52) are adjusted to drive the two working tables to move in the X-axis direction.
6. A high accuracy dual gauge head comparator according to claim 5, wherein the adjustment unit (53) comprises: the support device comprises a fixed plate (531), a plurality of support rods (532) and two second screws (533), wherein each second screw (533) is connected with the fixed plate (531) to form a spiral pair; one end of each support rod (532) is fixed on the fixing plate (531), and the other end is fixed on the boss (10); two sides of each screw rod (533) are respectively provided with a guide rod (534), one end of each guide rod (534) is fixed on the fixing plate (531), and the other end of each guide rod (534) is fixed on the boss (10) after passing through the sliding seat (52) in a sliding manner.
7. A high-precision double-gauge-head block comparator according to claim 5, characterized in that each table and each cross slide (51) of the double table (4) are respectively provided with a second strip-shaped hole (54) at the same position, the slide (52) is provided with a fifth threaded hole, and a third knob (42) passes through the second strip-shaped holes (54) of one table and one cross slide (51) and then is locked in the fifth threaded hole of one slide (52).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165143.XA CN112284313B (en) | 2020-10-27 | 2020-10-27 | High-precision double-measuring-head measuring block comparator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165143.XA CN112284313B (en) | 2020-10-27 | 2020-10-27 | High-precision double-measuring-head measuring block comparator |
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| Publication Number | Publication Date |
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| CN112284313A CN112284313A (en) | 2021-01-29 |
| CN112284313B true CN112284313B (en) | 2022-02-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106054A (en) * | 1985-08-10 | 1987-04-01 | 株式会社三丰制作所 | Coordinate-measuring instrument |
| JPH05209743A (en) * | 1992-01-31 | 1993-08-20 | Kuroda Precision Ind Ltd | Alignmenmt working method |
| CN101793499A (en) * | 2010-03-30 | 2010-08-04 | 上海市计量测试技术研究院 | Multi-measuring-head measuring method and device for micro/nano coordinate measurement |
| CN108319299A (en) * | 2017-11-30 | 2018-07-24 | 北京工业大学 | A kind of regulating device, measurement and the compensation method of more gauge head setting angles |
| CN109443203A (en) * | 2018-11-06 | 2019-03-08 | 华中科技大学 | A kind of high-precision two-dimentional work bench Z axis error compensating method and system |
-
2020
- 2020-10-27 CN CN202011165143.XA patent/CN112284313B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106054A (en) * | 1985-08-10 | 1987-04-01 | 株式会社三丰制作所 | Coordinate-measuring instrument |
| JPH05209743A (en) * | 1992-01-31 | 1993-08-20 | Kuroda Precision Ind Ltd | Alignmenmt working method |
| CN101793499A (en) * | 2010-03-30 | 2010-08-04 | 上海市计量测试技术研究院 | Multi-measuring-head measuring method and device for micro/nano coordinate measurement |
| CN108319299A (en) * | 2017-11-30 | 2018-07-24 | 北京工业大学 | A kind of regulating device, measurement and the compensation method of more gauge head setting angles |
| CN109443203A (en) * | 2018-11-06 | 2019-03-08 | 华中科技大学 | A kind of high-precision two-dimentional work bench Z axis error compensating method and system |
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| CN112284313A (en) | 2021-01-29 |
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