CN114061521A - Precision measuring device for inner hole excircle of workpiece - Google Patents
Precision measuring device for inner hole excircle of workpiece Download PDFInfo
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- CN114061521A CN114061521A CN202111565308.7A CN202111565308A CN114061521A CN 114061521 A CN114061521 A CN 114061521A CN 202111565308 A CN202111565308 A CN 202111565308A CN 114061521 A CN114061521 A CN 114061521A
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- inner hole
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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
- G01B21/10—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 diameters
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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
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a precision measuring device for the inner hole and the excircle of a workpiece, which belongs to the field of workpiece measuring equipment and comprises a slide block sliding along an X axis, wherein the slide block is driven by a driving mechanism to slide, the X axis is parallel to the axis of the workpiece to be measured, a standard part with the size of a standard inner hole or the excircle is arranged on the slide block, the axis of the standard part is coaxial with the axis of the workpiece to be measured, two clamping feet capable of synchronously sliding and opening and closing are arranged on the slide block, the clamping feet are connected with a measuring instrument, measuring points of the two clamping feet are respectively contacted with two sides of the inner hole or the outer wall of the standard part, the standard part and the slide block can relatively slide in the X axis direction, after the standard part and the slide block relatively slide, the two clamping feet enter the workpiece to be measured through the standard part, and the difference value of the Y axis direction of the workpiece to be measured is detected. The invention can avoid the measured value from being affected by factors such as temperature, vibration, time and the like through comparison of the standard parts, and the measurement of the excircle dimension of the inner hole is more accurate.
Description
Technical Field
The invention relates to the field of workpiece measuring equipment, in particular to a device for precisely measuring the excircle of an inner hole of a workpiece.
Background
With the progress of modern science and technology, the requirements on machining and measurement of inner holes and outer circles of workpieces in the fields of automobiles, aerospace, machinery and the like are higher and higher, and the inner holes or the outer circles of the workpieces are often machined in actual production.
At present, the inner hole or the excircle of a workpiece are measured by a plurality of methods, a vernier caliper or an inner micrometer is usually used for measurement, but the influence of factors such as the technical skill level of an operator on the measurement of the vernier caliper is large. For this reason, many devices for measuring the size of the outer circle of the inner hole are available in the market to solve the problem.
For example, patent publication No. CN109489550A discloses an inner hole size measuring device, which includes: a first mounting assembly extending in a first direction; a second mounting assembly movably connected with the first mounting assembly; and the measuring device can extend into the hole of the measured piece, the axial position of the measuring device in the hole is adjusted through the first mounting assembly, and the radial position of the measuring device in the hole is adjusted through the second mounting assembly.
However, the measurement value of the existing measuring device varies with temperature, vibration, time and other factors, and thus the final measurement value is affected.
Disclosure of Invention
The invention aims to provide a device for precisely measuring the excircle of an inner hole of a workpiece.
The technical scheme of the invention is as follows: the device for precisely measuring the excircle of the inner hole of a workpiece is characterized by comprising
A slide block sliding along an X axis, the slide block is driven by a driving mechanism to slide, the X axis is parallel to the axis of the workpiece to be measured,
the slide block is provided with a standard part with standard inner hole or excircle size, the axis of the standard part is coaxial with the axis of the workpiece to be measured,
the slide block is provided with two clamping pins which can be opened and closed synchronously in a sliding way, the clamping pins are connected with a measuring instrument, measuring points of the two clamping pins are respectively contacted with two sides of an inner hole or an outer wall of the standard part,
the standard part and the sliding block can slide relatively in the X-axis direction, and after the standard part and the sliding block slide relatively, the two clamping pins enter the workpiece to be detected through the standard part, so that the difference value between the standard part and the workpiece to be detected in the Y-axis direction is detected.
The further optimization scheme of the invention is as follows: the opening and closing directions of the two clamping pins are parallel to the Y-axis direction, and the Y-axis direction is vertical to the X-axis direction.
The further optimization scheme of the invention is as follows: the two clamping feet are connected with the elastic piece, and the elastic piece drives the two clamping feet to synchronously slide towards two sides to open or synchronously slide towards the middle to close.
The further optimization scheme of the invention is as follows: the clamping pin is provided with a first guide edge, and the clamping pin enters the workpiece to be detected along the first guide edge.
The further optimization scheme of the invention is as follows: and a reset piece is arranged between the standard piece and the sliding block and can drive the standard piece to slide relative to the sliding block, so that the measuring points of the two clamping pins are contacted with the two sides of the inner hole or the outer wall of the standard piece again.
The further optimization scheme of the invention is as follows: and the second guide edge is arranged on the clamping pin, and when the resetting piece drives the standard piece to slide relative to the sliding block, the clamping pin moves along the second guide edge to enable the measuring point to be in contact with the inner hole or the outer wall of the standard piece again.
The further optimization scheme of the invention is as follows: be equipped with the fixing base on the slider, fixing base and slider are at X axle direction relative slip, and standard detachable connects on the fixing base.
The further optimization scheme of the invention is as follows: the two supporting blocks that set up around detachable is connected with on the slider, is equipped with two slide bar one that the X axial was set up between two supporting blocks, and the both ends of two slide bar one are connected with the supporting shoe of both sides respectively, and the fixing base cover slides on two slide bar one.
The further optimization scheme of the invention is as follows: the slider is connected with the installation piece in a detachable manner, and the two clamping pins are arranged on the installation piece and can slide synchronously to open and close.
The further optimization scheme of the invention is as follows: the standard part and the workpiece to be measured are made of the same material.
Compared with the prior art, the invention has the advantages that the measuring points of the two clamping feet are respectively contacted with the two sides of the inner hole or the outer wall of the standard part, the position of the clamping feet when being contacted with the standard part is taken as a reference position, the standard part and the sliding block can slide in the X-axis direction, when the size measurement is needed to be carried out on the inner hole or the outer circle of the workpiece to be measured, the two clamping feet relatively slide to the standard part and the sliding block, the two clamping feet enter the workpiece to be measured through the standard part, the two clamping feet synchronously slide to open and close so that the two measuring points are respectively contacted with the two sides of the inner hole or the outer wall of the workpiece to be measured, the measuring instrument measures the sliding distance of the clamping feet, thereby detecting the difference value of the standard part and the workpiece to be measured in the Y-axis direction to obtain the size of the inner hole or the outer circle of the workpiece to be measured, the position of the clamping feet when being contacted with the standard part is taken as the reference position, the change of the measuring value of the measuring device along with the factors such as temperature, vibration, time and the like can be effectively reduced, making the dimensional measurement more accurate.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a first schematic structural diagram of the present invention for detecting the size of an inner hole of a workpiece.
FIG. 2 is a second schematic structural diagram of the present invention for detecting the size of the inner hole of the workpiece.
FIG. 3 is a first cross-sectional view of the present invention for detecting the size of the inner hole of a workpiece.
FIG. 4 is a second sectional view of the present invention for detecting the size of the inner hole of the workpiece.
FIG. 5 is a partial schematic view of the present invention for detecting the size of the inner hole of a workpiece.
FIG. 6 is a first schematic view of the present invention before detecting the size of the inner hole of the workpiece.
FIG. 7 is a second schematic diagram of the present invention before the inner hole size of the workpiece is detected.
FIG. 8 is a schematic diagram of the present invention for detecting the size of the inner hole of a workpiece.
FIG. 9 is a first schematic structural diagram of detecting the outer circle dimension of a workpiece according to the present invention.
FIG. 10 is a second schematic structural diagram of detecting the outer circle dimension of a workpiece according to the present invention.
FIG. 11 is a first sectional view of the present invention for detecting the size of the outer circle of a workpiece.
FIG. 12 is a second sectional view of the present invention for detecting the size of the outer circle of the workpiece.
FIG. 13 is a partial schematic view of detecting the outer circle dimension of a workpiece according to the present invention.
FIG. 14 is a first schematic diagram of the method before the detection of the excircle size of the workpiece.
FIG. 15 is a diagram illustrating a second embodiment of the present invention before the outer circle dimension of the workpiece is inspected.
FIG. 16 is a schematic diagram of the present invention for detecting the outer circle dimension of a workpiece.
FIG. 17 is a schematic diagram showing a case where the height difference exists between the clamping leg and the horizontal position of the axis of the standard component.
In the figure: 1. a base; 2. a slide rail; 3. a standard component; 4. measuring points; 5. an inner bore; 6. clamping a pin; 7. a sliding part; 8. an elastic member; 9. a measuring instrument; 10. mounting blocks; 11. installing a long groove; 12. a second sliding rod; 13. a first sliding rod; 14. a reset member; 15. a slider; 16. a fixed seat; 17. a support block; 18. a positioning column; 19. positioning holes; 20. a second guide edge; 21. a first guide edge; 22. a clamp; 23. a workpiece to be tested; 24. and (4) an outer circle.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
1-17, the precision measuring device for the excircle of the inner hole of the workpiece comprises a slide block 15 sliding along an X axis and a controller, wherein the slide block 15 is driven by a driving mechanism to slide.
As shown in fig. 1 and 2, the sliding block 15 is slidably disposed on the base 1, the base 1 is provided with a sliding rail 2 disposed in an X-axis direction, the sliding block 15 is sleeved on the sliding rail 2 and can slide along the sliding rail 2, preferably, the sliding rail 2 is a T-shaped sliding rail, the sliding block 15 is adapted to the T-shaped sliding rail, and the sliding block 15 is limited on the T-shaped sliding rail and can slide along the T-shaped sliding rail.
The driving mechanism comprises a driving motor, a screw rod and a nut, the driving motor is fixed on the base 1, the screw rod is connected to a motor shaft of the driving motor, the nut is fixed on the sliding block 15, the nut is sleeved on the screw rod and connected with the screw rod, and when the driving motor is started, the screw rod rotates to drive the sliding block 15 to slide along the X-axis direction. Preferably, the driving motor is a numerical control motor and is electrically connected with the controller.
As shown in fig. 6 and 7, the X axis is parallel to the axis of the workpiece 23 to be measured, and the workpiece 23 to be measured is clamped and fixed on the fixture 22, preferably, the fixture 22 may be a three-jaw chuck, the fixture 22 is fixedly connected to a rotating shaft, and the rotating shaft drives the workpiece 23 to be measured to rotate through the fixture 22. The rotating shaft for clamping the workpiece 23 to be measured is the same as that of the existing numerically controlled lathe, and can be driven to rotate by a motor.
As shown in fig. 1 and 3, the slide block 15 is provided with a standard part 3 having the size of a standard inner hole 5 or an outer circle 24, and the standard part 3 and the slide block 15 can relatively slide in the X-axis direction.
In order to replace the standard part 3 conveniently, the sliding block 15 is provided with the fixed seat 16, the fixed seat 16 and the sliding block 15 slide relatively in the X-axis direction, the standard part 3 is detachably connected to the fixed seat 16, when the sizes of different workpieces need to be measured, the standard part 3 with different sizes of the inner hole 5 or the outer circle 24 can be installed on the fixed seat 16, and the applicability is higher.
Preferably, the standard component 3 can be fixedly connected to the fixing base 16 by screws. In addition, the fixing seat 16 can be provided with a positioning column 18, the standard part 3 is provided with a positioning hole 19 corresponding to the positioning column 18, and the positioning hole 19 on the standard part 3 is inserted into the positioning column 18, so that the standard part 3 can be connected to the fixing seat 16 more stably.
Specifically, the top surface of the sliding block 15 is detachably connected with two supporting blocks 17 which are arranged in the front and back directions, preferably, the two supporting blocks 17 are fixed on the top surface of the sliding block 15 through screws, two first sliding rods 13 which are arranged in the X-axis direction are arranged between the two supporting blocks 17, two ends of the first sliding rods 13 are respectively connected with the supporting blocks 17 on two sides, and the fixing seat 16 is sleeved on the first sliding rods 13 and slides along the X-axis direction.
The axis of the standard component 3 is coaxial with the axis of the workpiece 23 to be measured. The tool can be used for connecting a dial indicator on a rotating shaft for clamping a workpiece 23 to be measured firstly, the sliding block 15 drives the standard part 3 to move in the X-axis direction to enable the dial indicator to enter the standard part 3, a measuring head of the dial indicator is in contact with an inner hole 5 or an outer wall of the standard part 3 and is perpendicular to the rotating shaft, the dial indicator is driven to rotate through the rotating shaft, the measuring head of the dial indicator is enabled to rotate along the inner hole 5 or the outer wall of the standard part 3, the position of the standard part 3 is adjusted according to a value measured by the measuring head of the dial indicator, the standard part 3 is fixed by replacing fixing seats 16 with different heights, the axis of the standard part 3 is coaxial with the axis of the rotating shaft, the dial indicator is detached and replaced with the workpiece 23 to be measured after the standard part 3 is fixed, and the axis of the workpiece 23 to be measured is coaxial with the axis of the rotating shaft when the workpiece 23 to be measured is clamped on the rotating shaft, so that the axis of the standard part 3 and the workpiece 23 to be measured can be coaxial.
In addition, a resetting piece 14 is arranged between the standard component 3 and the slide block 15, and the resetting piece 14 can drive the standard component 3 to slide relative to the slide block 15.
Preferably, the reset member 14 is a reset spring, the two first sliding rods 13 are sleeved with the reset spring, the reset spring is arranged between the fixed seat 16 and the supporting block 17, and the elastic restoring force of the reset spring drives the fixed seat 16 to slide towards one side of the workpiece 23 to be detected and presses the fixed seat 16 on the supporting block 17 close to one side of the workpiece 23 to be detected.
As shown in fig. 1 and 4, two clamping pins 6 capable of opening and closing synchronously in a sliding manner are arranged on the sliding block 15, further, an installation block 10 is detachably connected to the sliding block 15, and the two clamping pins 6 are arranged on the installation block 10 and can be opened and closed synchronously in a sliding manner. The mounting block 10 is used for mounting the clamping foot 6 and also serves as one of the supporting blocks 17.
Specifically, the mounting block 10 is provided with a mounting long groove 11, the length extending direction of the mounting long groove 11 is parallel to the Y axis, a second sliding rod 12 arranged in the Y axis direction is arranged in the mounting long groove 11, the tail parts of the two clamping legs 6 are respectively provided with a sliding part 7, the width of the sliding part 7 is equal to that of the mounting long groove 11, and the sliding part 7 is sleeved on the sliding rod and can slide along the Y axis direction.
Preferably, the opening and closing directions of the two clamping legs 6 are parallel to the Y-axis direction, and the Y-axis direction is perpendicular to the X-axis direction.
When not measuring, the measuring points 4 of the two clamping feet 6 are respectively contacted with the inner hole 5 or two sides of the outer wall of the standard component 3 as the reference positions of the clamping feet 6.
Specifically, two clip feet 6 are connected with an elastic member 8, preferably, the elastic member 8 is a spring, the spring is sleeved on the second sliding rod 12, the spring acts on the two clip feet 6 and drives the two clip feet 6 to synchronously slide towards two sides to open or synchronously slide towards the middle to close, so that the measuring points 4 of the two clip feet 6 can be in contact with the inner hole 5 of the standard component 3 or two sides of the outer wall.
For example: as shown in fig. 1, when the inner hole 5 of the workpiece 23 to be measured needs to be measured, the spring is located between the sliding portions 7 of the two clamping legs 6, the elastic supporting force of the spring acts on the sliding portions 7 of the two clamping legs 6, so that the two clamping legs 6 have a movement tendency of opening towards two sides, the two clamping legs 6 extend into the inner hole 5 of the standard component 3, and the elastic member 8 opens the measuring points 4 of the two clamping legs 6 towards two sides to contact with two sides of the inner hole 5 of the standard component 3;
fig. 9 and 13 show that when the outer edge of the workpiece 23 to be measured needs to be measured, the number of the springs is two, the two springs are respectively located at the outer sides of the sliding portions 7 of the two clamping legs 6, the elastic forces of the two springs respectively act on the sliding portions 7 of the two clamping legs 6, so that the two clamping legs 6 have the tendency of approaching to the middle, the two clamping legs 6 are located at the two sides of the standard component 3, and the two springs can enable the measuring points 4 of the two clamping legs 6 to approach to the middle and contact with the two sides of the outer wall of the standard component 3.
The clamping feet 6 are connected with a measuring instrument 9, the measuring instrument 9 is fixed on one clamping foot 6, a measuring head of the measuring instrument 9 is abutted against the other clamping foot 6, the measuring instrument 9 is used for sensing the change of the distance between the two clamping feet 6, the measuring instrument 9 is electrically connected with the controller, when the clamping feet 6 slide, the measuring instrument 9 senses the change value of the distance between the two clamping feet 6 and transmits a signal to the controller, and preferably, the measuring instrument 9 comprises a displacement sensor, such as an EDL displacement sensor with the brand name of Mike micro-measuring and the model number of EDL 05-01.
As shown in fig. 6-8, when the diameter size of the outer circle 24 of the workpiece 23 needs to be detected, the elastic member 8 drives the two clamping pins 6 to synchronously slide toward the middle, so that the measuring points 4 of the two clamping pins 6 contact with the two sides of the outer wall of the standard member 3, at this time, the measuring instrument 9 senses the position of the clamping pins 6 and takes the position as a zero point, the slide block 15 drives the standard member 3 to move along the X axis toward the workpiece 23 to be detected, the standard member 3 can abut against the workpiece 23 to be detected during the movement process, so that the standard member 3 and the slide block 15 slide relatively, after the standard member 3 and the slide block 15 slide relatively, the measuring points 4 of the two clamping pins 6 move from the outer walls of the two sides of the standard member 3 to the outer walls of the two sides of the workpiece 23 to be detected, and because the diameter of the outer circle 24 of the workpiece 23 to be detected and the diameter of the outer circle 24 of the standard member 3 have a size difference, the two clamping pins 6 slide synchronously open and close to make the two measuring points 4 contact with the outer walls of the two sides of the workpiece 23 to be detected respectively, the measuring instrument 9 senses a change value of the distance between the two clamping pins 6 and transmits a signal to the controller, the detected change value of the distance between the two clamping pins 6 is used as a difference value between the diameter of the excircle 24 of the standard part 3 and the diameter of the excircle 24 of the workpiece 23 to be measured in the Y-axis direction, and the diameter of the excircle 24 of the standard part 3 is known, so that the size of the diameter of the excircle 24 of the workpiece 23 to be measured can be obtained through the diameter of the excircle 24 of the standard part 3 and the difference value.
As shown in fig. 14-16, when the diameter of the inner hole 5 of the workpiece 23 needs to be detected, the elastic member 8 drives the two clamping pins 6 to slide and open towards both sides, so that the measuring points 4 of the two clamping pins 6 are inserted into the inner hole 5 of the standard member 3 and contact with the inner walls of both sides of the inner hole 5 of the standard member 3, at this time, the measuring instrument 9 senses the position of the clamping pins 6 and takes the position as a zero point, the sliding block 15 drives the standard member 3 to move along the X axis toward the workpiece 23 to be detected, the standard member 3 can abut against the workpiece 23 to be detected during the movement process, so that the standard member 3 and the sliding block 15 slide relatively, after the standard member 3 and the sliding block 15 slide relatively, the measuring points 4 of the two clamping pins 6 move from the inner walls of both sides of the inner hole 5 of the standard member 3 and are inserted into the inner hole 5 of the workpiece 23 to be detected, because the diameter of the inner hole 5 of the workpiece 23 to be detected and the diameter of the inner hole 5 of the standard member 3 have a size difference, the two clamping pins 6 slide and open and close synchronously, so that the two measuring points 4 can contact with the inner walls of both sides of the workpiece 23 to be detected The measuring instrument 9 senses the distance change value of the two clamping pins 6 and transmits a signal to the controller, the detected distance change value of the two clamping pins 6 is used as the difference value of the diameter of the inner hole 5 of the standard part 3 and the diameter of the inner hole 5 of the workpiece 23 to be measured in the Y-axis direction, and the diameter of the inner hole 5 of the standard part 3 is known, so that the diameter of the inner hole 5 of the workpiece 23 to be measured can be obtained through the diameter of the inner hole 5 of the standard part 3 and the difference value.
Preferably, the standard component 3 and the workpiece 23 to be measured are made of the same material, so that the measurement result is not influenced by the material, and the measurement structure is more precise.
Preferably, as shown in fig. 5 and 9, the first guiding edge 21 is provided on the clamping leg 6, when the standard component 3 and the sliding block 15 slide relatively in the X-axis direction, the clamping leg 6 enters the workpiece to be measured 23 through the standard component 3 along the first guiding edge 21, and the first guiding edge 21 makes the clamping leg 6 enter the workpiece to be measured 23 more easily.
After the measurement is finished, the sliding block 15 drives the standard component 3 to move towards the direction far away from the workpiece 23 to be measured, the reset component 14 acts on the fixed seat 16, so that the fixed seat 16 moves towards the direction of the workpiece 23 to be measured relative to the sliding block 15, the fixed seat 16 drives the standard component 3 to move relative to the sliding block 15 together, the fixed seat 16 is propped against the supporting block 17 close to one side of the workpiece 23 to be measured again, at the moment, the measuring points 4 of the two clamping pins 6 move back to the inner hole 5 or the outer wall of the standard component 3 again, and the measuring points 4 of the two clamping pins 6 are in contact with the inner hole 5 or the two sides of the outer wall of the standard component 3 again.
Preferably, as shown in fig. 5 and 9, the second guiding edge 20 is arranged on the clamping foot 6, when the resetting member 14 drives the standard component 3 to slide and reset relative to the sliding block 15, the clamping foot 6 makes the measuring point 4 contact with the inner hole 5 or the outer wall of the standard component 3 again along the second guiding edge 20, and the second guiding edge 20 makes the clamping foot 6 move back to the standard component 3 more easily without being clamped.
The precision measuring device for the excircle of the inner hole of the workpiece is fixed on the Y-axis numerical control slide rail, the cutter for processing the workpiece to be measured 23 is also assembled on the Y-axis numerical control slide rail, and the Y-axis numerical control slide rail can drive the precision measuring device for the excircle of the inner hole of the workpiece and the cutter to move in the Y-axis direction.
The Y-axis numerical control slide rail is arranged on the X-axis numerical control slide rail, and the X-axis numerical control slide rail can drive the Y-axis numerical control slide rail, the inner hole and outer circle precision measurement device of the workpiece and the cutter to move in the X-axis direction.
The X-axis numerical control slide rail and the Y-axis numerical control slide rail are both electrically connected with the controller, and the X-axis numerical control slide rail and the Y-axis numerical control slide rail are both the same as the slide rails of the existing numerical control lathe, and can refer to bulletin numbers CN214237074U and CN 215091998U.
When a workpiece 23 to be measured is machined, the workpiece 23 to be measured is assembled on a clamp 22 on a rotating shaft, the rotating shaft drives the workpiece 23 to rotate, an X-axis numerical control slide rail drives a cutter to feed towards the workpiece 23 to be measured along the X-axis direction, so that the cutter machines an inner hole 5 or an outer circle 24 of the workpiece 23 to be measured, after machining is completed, the X-axis numerical control slide rail drives the cutter to withdraw, a Y-axis numerical control slide rail drives an inner hole outer circle precision measuring device of the workpiece to move to a position opposite to the workpiece 23 to be measured, the position of a standard part 3 is adjusted to enable the axis of the standard part 3 to be coaxial with the axis of the workpiece 23 to be measured, the diameter size of the inner hole 5 or the outer circle 24 machined by the inner hole outer circle precision measuring device of the workpiece 23 to be measured is measured, a measured difference value between the standard part 3 and the workpiece 23 to be measured in the Y-axis direction is transmitted to a controller by a measuring instrument 9, the controller controls the Y-axis numerical control slide rail to drive the cutter to move to a machining position along the Y-axis and compensate the difference value, the controller controls the X-axis numerical control slide rail to drive the cutter to feed towards the workpiece 23 to be measured along the X-axis direction, so that the cutter can process the inner hole 5 or the outer circle 24 of the workpiece 23 to be measured again, and the size processing of the inner hole 5 or the outer circle 24 of the workpiece 23 to be measured is more accurate.
In order to make the precision measuring device of the inner hole and the excircle of the workpiece more precise, the contact positions of the measuring points 4 of the two clamping feet 6 and the standard part 3 are flush with the horizontal position of the axis of the standard part 3, and the distance between the two clamping feet 6 can be the same as the diameter of the inner hole 5 or the excircle 24 of the standard part 3 and the diameter of the inner hole 5 or the excircle 24 of the workpiece 23 to be measured. The X-axis numerical control slide rail and a motor driving the rotating shaft to rotate are installed on the same workbench, the height from the axis of the rotating shaft to the workbench is measured, the height from the measuring point 4 of the clamping pin 6 to the workbench is adjusted according to the height from the axis of the rotating shaft to the workbench, the height from the measuring point 4 of the clamping pin 6 to the workbench is aligned with the height from the rotating shaft to the workbench, and the height from the measuring point 4 of the clamping pin 6 to the workbench is aligned with the height from the axis of the standard component 3 to the workbench due to the fact that the axis of the standard component 3 is coaxial with the axis of the rotating shaft, and the measuring points 4 of the two clamping pins 6 can be in contact with the diameter positions of the two sides of an inner hole 5 or an outer circle 24 of the standard component 3 more accurately.
Preferably, the height of the measuring point 4 of the chucking pins 6 to the table can be adjusted by adding or subtracting a spacer at the lower end of the mounting block 10.
As shown in FIG. 17, the height from the measuring point 4 of the clamping pin 6 to the workbench can be adjusted according to the height from the axis of the rotating shaft to the workbench, the error can be controlled to be extremely small, the height difference between the height from the axis of the rotating shaft to the workbench and the height from the measuring point 4 of the clamping pin 6 to the workbench can be basically controlled within 0.5mm, the radius of an inner hole 5 of the standard component 3 is set to be L1, when L1 is equal to 25mm, the height error between the height from the axis of the rotating shaft to the workbench and the height from the measuring point 4 of the clamping pin 6 to the workbench is set to be H, the H is equal to 0.5mm, and at the moment, half of the distance between the two clamping pins 6 is set to be L2, and L1 is set to be L22＝H2+L22And the calculated value of L2 is approximately equal to 24.995mm, and the error between L1 and L2 is 0.005mm, so that the error of the diameter difference between the workpiece to be measured 23 and the standard component 3 is smaller, the error can be basically ignored, the diameter difference between the standard component 3 and the workpiece to be measured 23 measured by the two clamping feet 6 is not influenced, and the accuracy of measuring the diameter size by the two clamping feet 6 can be ensured.
The precision measuring device for the inner hole outer circle of the workpiece provided by the invention is described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The device for precisely measuring the excircle of the inner hole of a workpiece is characterized by comprising
A slide block sliding along an X axis, the slide block is driven by a driving mechanism to slide, the X axis is parallel to the axis of the workpiece to be measured,
the slide block is provided with a standard part with standard inner hole or excircle size, the axis of the standard part is coaxial with the axis of the workpiece to be measured,
the slide block is provided with two clamping pins which can be opened and closed synchronously in a sliding way, the clamping pins are connected with a measuring instrument, measuring points of the two clamping pins are respectively contacted with two sides of an inner hole or an outer wall of the standard part,
the standard part and the sliding block can slide relatively in the X-axis direction, and after the standard part and the sliding block slide relatively, the two clamping pins enter the workpiece to be detected through the standard part, so that the difference value between the standard part and the workpiece to be detected in the Y-axis direction is detected.
2. The precision measuring device for the excircle of the inner hole of the workpiece as claimed in claim 1, wherein the opening and closing directions of the two clamping legs are parallel to the Y-axis direction, and the Y-axis direction is perpendicular to the X-axis direction.
3. The precision measuring device for the excircle of the inner hole of the workpiece as claimed in claim 1, wherein the two clamping feet are connected with an elastic member, and the elastic member drives the two clamping feet to synchronously slide to the two sides or synchronously slide to the middle to close.
4. The device for precisely measuring the excircle of the inner hole of the workpiece as claimed in claim 1, wherein the first guide edge is arranged on the first clamping foot, and the first clamping foot enters the workpiece to be measured along the first guide edge.
5. The device for precisely measuring the excircle of the inner hole of the workpiece as claimed in claim 1, wherein a reset member is arranged between the standard member and the slide block, and the reset member can drive the standard member to slide relative to the slide block, so that the measuring points of the two clamping pins are again in contact with the two sides of the inner hole or the outer wall of the standard member.
6. The precision measuring device for the excircle of the inner hole of the workpiece as claimed in claim 5, wherein the second guide edge is arranged on the clamping pin, and when the resetting member drives the standard part to slide relative to the sliding block, the clamping pin moves along the second guide edge to enable the measuring point to be in contact with the inner hole or the outer wall of the standard part again.
7. The precision measuring device for the excircle of the inner hole of the workpiece as claimed in claim 1, wherein the slide block is provided with a fixed seat, the fixed seat and the slide block slide relatively in the X-axis direction, and the standard component is detachably connected to the fixed seat.
8. The device for precisely measuring the excircle of the inner hole of the workpiece as claimed in claim 7, wherein the slide block is detachably connected with two support blocks arranged in a front-back manner, two first slide bars arranged in an X-axis direction are arranged between the two support blocks, two ends of each first slide bar are respectively connected with the support blocks at two sides, and the fixed seat is sleeved on each first slide bar to slide.
9. The device for precisely measuring the excircle of the inner hole of the workpiece according to claim 1, wherein the slide block is detachably connected with an installation block, and the two clamping pins are arranged on the installation block and can be synchronously opened and closed in a sliding manner.
10. The apparatus of claim 1, wherein the standard component and the workpiece to be measured are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565308.7A CN114061521A (en) | 2021-12-20 | 2021-12-20 | Precision measuring device for inner hole excircle of workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565308.7A CN114061521A (en) | 2021-12-20 | 2021-12-20 | Precision measuring device for inner hole excircle of workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN114061521A true CN114061521A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111565308.7A Pending CN114061521A (en) | 2021-12-20 | 2021-12-20 | Precision measuring device for inner hole excircle of workpiece |
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| CN (1) | CN114061521A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523417A (en) * | 2022-03-15 | 2022-05-24 | 常州曲线数控科技有限公司 | Method for detecting diameter of grinding wheel of roll grinder |
| CN115507794A (en) * | 2022-10-19 | 2022-12-23 | 南通虹冈铸钢有限公司 | Automobile stamping die foundry goods detection device |
-
2021
- 2021-12-20 CN CN202111565308.7A patent/CN114061521A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523417A (en) * | 2022-03-15 | 2022-05-24 | 常州曲线数控科技有限公司 | Method for detecting diameter of grinding wheel of roll grinder |
| CN115507794A (en) * | 2022-10-19 | 2022-12-23 | 南通虹冈铸钢有限公司 | Automobile stamping die foundry goods detection device |
| CN115507794B (en) * | 2022-10-19 | 2023-08-11 | 南通虹冈铸钢有限公司 | Automobile stamping die foundry goods detection device |
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