CN213714165U - Workpiece inner hole detection device - Google Patents
Workpiece inner hole detection device Download PDFInfo
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- CN213714165U CN213714165U CN202022481198.3U CN202022481198U CN213714165U CN 213714165 U CN213714165 U CN 213714165U CN 202022481198 U CN202022481198 U CN 202022481198U CN 213714165 U CN213714165 U CN 213714165U
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Abstract
The utility model relates to a work piece hole detection device, include: the workbench is used for placing a workpiece to be detected; the detection mechanism is arranged on the workbench and used for detecting the inner hole of the workpiece placed on the workbench; the detection mechanism comprises a positioning seat, a detection block and a detection rod, wherein the positioning seat is basically columnar, the positioning seat is vertically arranged on the top surface of the workbench, a workpiece to be detected is sleeved outside the positioning seat, a first movable hole is radially formed in the side wall of the positioning seat, a second movable hole is formed in the middle of the positioning seat along the axial direction of the positioning seat, the second movable hole is communicated with the first movable hole, the detection block is arranged in the first movable hole and can reciprocate along the length direction of the first movable hole, the detection rod is located below the workbench and can be vertically movably arranged in the second movable hole of the positioning seat, the upper end of the detection rod is of a conical surface structure and can act on the detection block, and the detection block is enabled to move outwards and abut against the inner hole wall of the workpiece to be detected. The inner hole detection device cannot cause interference to the feeding and discharging process of a workpiece, and the detection precision is improved.
Description
Technical Field
The utility model relates to a technical field is examined to the work piece, especially relates to a work piece hole detection device.
Background
At present, in the prior art, the detection of the inner aperture and the outer aperture of the workpiece generally adopts manual detection, namely, the inner aperture and the outer aperture of the workpiece are detected one by one through measuring tools such as a micrometer, but the manual detection is easy to cause errors, the error rate is large, in addition, the working efficiency is also low, and the cost is high.
In order to solve the technical problem, chinese utility model patent that application number is CN201520216211.9 (the grant bulletin number is CN 205300554U) discloses "an aperture check out test set", including workstation, setting on the workstation and be used for the holder of centre gripping work piece, set up interior aperture detection device and outer aperture detection device on the workstation, wherein, interior aperture detection device includes the sleeve, sets up movable block, setting in the sleeve are in vertical displacement detection device and the vertical driving piece that drives the sleeve and move down on the movable block, the movable block has the conical surface, has seted up the through-hole on the telescopic lateral wall, is provided with the ball in the sleeve, supports to hold the conical surface, and can stretch out the through-hole convexly. The inner diameter detection action is as follows: the power source firstly lowers the inner bore diameter detection device to a specified height (the position of a through hole of the sleeve extends into an inner bore of a workpiece), then the vertical driving piece moves downwards to drive the moving block to descend so that the ball moves along the radial direction until the ball abuts against the inner bore wall of the inner bore, the forces on two sides of the ball are balanced, at the moment, the offset of a measuring head of a displacement sensor for measuring the inner bore is determined according to the position where the ball stops, and therefore the difference value between the inner bore of the workpiece and a standard size is obtained, and the actual diameter is calculated.
The aperture detection equipment in the patent has certain defects in actual use, firstly, the inner aperture detection device is arranged above a workbench, which undoubtedly causes interference to the feeding and discharging processes of workpieces, and is easy to collide with each part of the inner aperture detection device to influence the detection precision of an inner hole; secondly, the location of work piece on the detection station on the workstation is realized through the holder (three-jaw cylinder), therefore in the testing process of this work piece hole, all need carry out the tight action of the clamp of holder and detect the release action after accomplishing, and this also causes to a certain extent when prolonging the use that the hole detected, has reduced detection efficiency.
Therefore, the existing workpiece inner hole detection device needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the first technical problem that will solve is to prior art's current situation, provides one kind and can not cause the interference to the last unloading process of work piece to the work piece hole detection mechanism who detects the precision has effectively been improved.
The utility model discloses the second technical problem that will solve is to prior art's current situation, provides one kind and makes things convenient for the work piece to fix a position to effectively improve detection efficiency's work piece hole detection mechanism.
The utility model provides a technical scheme that first technical problem and second technical problem adopted does: a workpiece bore inspection device comprising:
the workbench is used for placing a workpiece to be detected;
the detection mechanism is arranged on the workbench and used for detecting the inner hole of the workpiece placed on the workbench;
the detection mechanism comprises a positioning seat, a detection block and a detection rod, wherein the positioning seat is basically columnar and is vertically arranged on the top surface of the workbench, a workpiece to be detected is sleeved outside the positioning seat, a first movable hole is radially formed in the side wall of the positioning seat, a second movable hole is formed in the middle of the positioning seat along the axial direction of the positioning seat, the second movable hole is communicated with the first movable hole, the detection block is arranged in the first movable hole and can reciprocate along the length direction of the first movable hole, the detection rod is located below the workbench and can be vertically movably arranged in the second movable hole of the positioning seat, the upper end of the detection rod is of a conical surface structure, and the detection rod can act on the detection block in the upward moving process so as to enable the detection block to move outwards until the detection block abuts against the inner hole wall of the workpiece to be detected.
In order to improve the accuracy of the detection of the inner hole of the workpiece, at least two first movable holes are arranged at intervals along the circumferential direction of the positioning seat, and at least two detection blocks are correspondingly arranged. Set up above-mentioned a plurality of detection pieces, can be so that the measuring rod can be at the even atress of circumference, be difficult to its axis position of skew, improved the accuracy that the hole detected.
As an improvement, the taper angle of the upper end conical surface of the detection rod is alpha, and the value range of alpha is 2-10 degrees. α is preferably 5 °.
In order to enable the detection block to move more stably in the radial direction under the action of the detection rod, the inner end of the detection block is provided with a first arc-shaped surface matched with the conical surface structure of the detection rod.
In order to ensure that the detection rod can automatically move inwards to reset when moving downwards so that the workpiece can be conveniently taken down from the positioning seat, the detection rod further comprises a reset spring arranged on the positioning seat, and the reset spring acts on the detection block and enables the detection to have the trend of moving inwards along the first movable hole all the time.
In order to conveniently set the reset spring and enable the reset spring to be matched with the detection block, a radial yielding groove is further formed in the positioning seat, the yielding groove is communicated with the first movable hole, a stop pin protruding out of the surface of the side wall of the detection block is arranged on the side wall of the detection block and extends into the yielding groove and can move along the radial direction of the positioning seat along with the detection block, and the reset spring is arranged in the yielding groove and abuts between the stop pin and the wall surface of the yielding groove.
In order to facilitate the processing and assembling of the detection block, the positioning seat comprises a positioning seat body and a cover body connected to the top end face of the positioning seat body, a guide groove is radially formed in the top end face of the positioning seat body along the radial direction of the positioning seat body, and the guide groove is covered by the cover body to form the first movable hole.
In order to realize the automatic detection of the inner hole of the workpiece, the detection mechanism further comprises a driving device and a displacement detection device used for detecting the displacement of the detection rod in the vertical direction, and the power output end of the driving device is connected with the detection rod. The driving device can be selected to be a cylinder or a motor.
In order to conveniently arrange the driving device and the displacement detection device, a supporting seat is arranged on the bottom surface of the workbench, and the driving device and the displacement detection device are arranged on the supporting seat.
In order to improve the precision of detecting the displacement of the detection rod, the displacement detection device is a displacement sensor, and the detection rod is provided with an induction block corresponding to a detection head of the displacement sensor.
Compared with the prior art, the utility model has the advantages that: the utility model discloses a detection mechanism includes positioning seat and test bar, and wherein, the positioning seat sets up on the top surface of workstation, plays the effect of location work piece, and the test bar is the below that is located the workstation. After the workpiece is placed in place, the detection rod can move from bottom to top, and is of a conical surface structure through the upper end of the detection rod, the detection rod acts on the detection block arranged in the first movable hole of the positioning seat, the detection block is enabled to move outwards along the length direction of the first movable hole until the detection block abuts against the inner hole wall of the workpiece to be detected, and after the detection rod moves in place, a user can convert the size of the inner hole of the workpiece through measuring the displacement of the detection rod in the vertical direction. The positioning seat of the workpiece inner hole detection device can not only position a workpiece, but also guide a detection rod, so that the clamping and loosening processes of a clamping piece in the prior art are omitted, and the detection efficiency is improved. On the other hand, most parts such as a detection rod of the detection mechanism are arranged at the bottom of the workbench, so that interference on the feeding and discharging processes of the workpiece is avoided, the workpiece is not easy to collide in the feeding and discharging processes, and the detection precision of the inner hole of the workpiece is improved.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic perspective view (bottom view) of another angular state according to the embodiment of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention (the detection rod moved up to the upper position);
FIG. 4 is a cross-sectional view of an embodiment of the present invention (with the test rod moved down to the down position);
fig. 5 is a schematic perspective view of the positioning seat according to the embodiment of the present invention (with the detection block assembled);
fig. 6 is an exploded view of the positioning seat according to the embodiment of the present invention;
fig. 7 is a schematic perspective view of a detection block according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of another angle of the detection block according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Referring to fig. 1 to 8, a workpiece inner hole detection device includes a workbench 20 and a detection mechanism, the detection mechanism is disposed on the workbench 20 and is used for detecting an inner hole of a workpiece 10 placed on the workbench 20, and the detection mechanism specifically includes a positioning seat 30, a detection block 50, an elastic member, a detection rod 60, a driving device 70 and a displacement detection device.
Referring to fig. 1 and 5, the positioning seat 30 is substantially cylindrical and vertically disposed on the top surface of the worktable 20, and the workpiece 10 to be detected is sleeved outside the positioning seat 30. Specifically, the table 20 has a vertically penetrating positioning hole 21, and the lower end of the positioning seat 30 is disposed in the positioning hole 21 and is limited by a step, as shown in detail in fig. 3. In order to identify whether the workpiece 10 is placed on the positioning socket 30, a first proximity switch 91 is also provided on the table 20, the first proximity switch 91 being located on one side of the positioning socket 30, see fig. 1.
Referring to fig. 3 and 5, a first movable hole 31 is radially formed on a sidewall of the positioning seat 30. The middle part of the positioning seat is provided with a second movable hole 32 along the axial direction, wherein the second movable hole 32 is communicated with the first movable hole 31. For convenience of processing, the positioning seat 30 includes a positioning seat body 35 and a cover body 36, and the cover body 36 is connected to the top end face of the positioning seat body 35 through a screw. The top end surface of the positioning seat body 35 is provided with a guide groove along the radial direction thereof, and the guide groove is covered by the cover body 36 to form the first movable hole 31.
Referring to fig. 3, the detecting block 50 is disposed in the first movable hole 31 of the positioning seat 30 and can reciprocate along the length direction of the first movable hole 31. In order to improve the accuracy of detecting the inner hole of the workpiece 10, at least two first movable holes 31 are arranged at intervals along the circumferential direction of the positioning seat 30, and at least two corresponding detecting blocks 50 are also arranged. In the present embodiment, the number of the first movable holes 31 is three, and the number of the detection blocks 50 is also three. The plurality of detection blocks 50 are arranged, so that the detection rod 60 can be uniformly stressed in the circumferential direction, the axial position of the detection rod is not easy to deviate, and the accuracy of inner hole detection is improved.
Referring to fig. 2 and 3, a supporting base 80 is disposed on the bottom surface of the worktable 20, and the driving device 70 and the displacement detecting device are disposed on the supporting base 80. Specifically, in the present embodiment, the supporting seat 80 is a supporting frame with a U-shaped cross section, and two edges of the upper portion of the supporting frame are connected to the bottom surface of the worktable 20.
Referring to fig. 2, the driving means 70 may be selected as a cylinder or a motor. The driving means 70 in the present embodiment is preferably a cylinder.
Referring to fig. 3 and 4, the detection lever 60 is located below the table 20, and specifically, a bottom end of the detection lever 60 is connected to a power output shaft of the driving device 70. The detecting rod 60 can extend into the second movable hole 32 of the positioning seat 30, so as to slide up and down along the length direction of the second movable hole 32 of the positioning seat 30 under the driving of the driving device 70. The upper end of the detection rod 60 is a conical surface structure 61, when the detection rod 60 moves upwards, the conical surface structure 61 of the detection rod 60 can act on the detection block 50, so that the detection block 50 moves outwards until the detection block abuts against the inner hole wall of the workpiece 10 to be detected. The taper angle of the upper end taper surface of the detection rod 60 is α, the range of α is 2 ° -10 °, and α is preferably 5 °. In order to make the radial movement of the detecting block 50 acted by the detecting rod 60 more stable, the inner end of the detecting block 50 has a first arc surface 51 matched with the conical surface structure 61 of the detecting rod 60, and the first arc surface 51 is also a conical surface structure 61, and the conical angle of the first arc surface 51 is consistent with that of the detecting rod 60. The outer end of the detection block 50 is a convex second arc-shaped surface 52, and the second arc-shaped surface 52 can effectively contact with the inner hole wall of the workpiece, so that the over-positioning problem is avoided, and the detection precision is improved.
Referring to fig. 2, a second proximity switch 92 for recognizing whether the detection lever is moved down to the position is further provided on the bottom surface of the table 20.
Referring to fig. 3, the return spring 40 is disposed on the positioning seat 30 and can act on the detecting block 50, so that the detecting block always has a tendency to move inwards along the first movable hole 31. Specifically, the positioning seat 30 has a radial recess 33, and the recess 33 is communicated with the first movable hole 31, as shown in fig. 6. The side wall of the detecting block 50 has a stop pin 34 protruding from the surface thereof, and the stop pin 34 extends into the avoiding groove 33 and can move along the radial direction of the positioning seat 30 along with the detecting block 50. In the present embodiment, the stop pin 34 is disposed on the bottom wall of the detection block 50, and correspondingly, the receding groove 33 is also located below the first movable hole 31. The return spring 40 is disposed in the relief groove 33 and abuts between the stopper pin 34 and the wall surface of the relief groove 33. After the workpiece 10 is inspected, when the inspection rod 60 moves downwards, the inspection block 50 can automatically move inwards to be reset under the action of the reset spring 40, so that the workpiece 10 can be conveniently taken down from the positioning seat 30, and the next workpiece 10 with inspection can be placed on the positioning seat 30.
Referring to fig. 2 and 3, the displacement detecting device is disposed on the supporting seat 80 and is configured to detect a displacement of the detecting rod 60 in the vertical direction, and the size of the inner hole of the workpiece 10 is obtained by converting the detected displacement of the detecting rod 60 in combination with a taper angle of the upper end of the detecting rod 60. In order to improve the accuracy of detecting the displacement of the detection lever 60, the displacement detection device is a displacement sensor 71, and the detection lever 60 is provided with a sensing block 62 corresponding to a detection head of the displacement sensor 71. In the present embodiment, the sensing block 62 on the sensing rod 60 is located right above the displacement sensor 71, and after the sensing rod 60 is moved up to a certain position, the sensing head of the displacement sensor 71 can move upward and stop when touching the sensing block 62, thereby obtaining the displacement of the sensing rod 60.
The detection mechanism of the workpiece inner hole detection device of the embodiment comprises a positioning seat 30 and a detection rod 60, wherein the positioning seat 30 is arranged on the top surface of the workbench 20 and plays a role in positioning the workpiece 10, and the detection rod 60 is positioned below the workbench 20. After the workpiece 10 is placed in place, the detection rod 60 can move from bottom to top, and acts on the detection block 50 arranged in the first movable hole 31 of the positioning seat 30 through the conical surface structure 61 at the upper end of the detection rod, so that the detection block 50 moves outwards along the length direction of the first movable hole 31 until the detection block abuts against the inner hole wall of the workpiece 10 to be detected, and after the detection rod 60 moves in place, a user can convert the size of the inner hole of the workpiece 10 by measuring the displacement of the detection rod 60 in the vertical direction. The positioning seat 30 of the workpiece inner hole detection device not only can position the workpiece 10, but also can guide the detection rod 60, so that the clamping and loosening processes of clamping pieces in the prior art are omitted, and the detection efficiency is improved. On the other hand, most parts of the detection mechanism, such as the detection rod 60, are arranged at the bottom of the worktable 20, so that the interference on the feeding and discharging processes of the workpiece 10 is avoided, the workpiece is not easily collided in the feeding and discharging processes, and the detection precision of the inner hole of the workpiece 10 is improved.
Claims (10)
1. A workpiece bore inspection device comprising:
the workbench (20) is used for placing a workpiece (10) to be detected;
the detection mechanism is arranged on the workbench (20) and is used for detecting the inner hole of the workpiece (10) placed on the workbench (20);
the method is characterized in that: the detection mechanism comprises a positioning seat (30), a detection block (50) and a detection rod (60), wherein the positioning seat (30) is basically columnar and vertically arranged on the top surface of the workbench (20), a workpiece (10) to be detected is sleeved on the outer side of the positioning seat (30), a first movable hole (31) is radially formed in the side wall of the positioning seat (30), a second movable hole (32) is axially formed in the middle of the positioning seat, the second movable hole (32) is communicated with the first movable hole (31), the detection block (50) is arranged in the first movable hole (31) and can reciprocate along the length direction of the first movable hole (31), the detection rod (60) is positioned below the workbench (20) and can be vertically movably arranged in the second movable hole (32) of the positioning seat (30), the upper end of the detection rod (60) is of a conical surface structure (61), the detection rod (60) can act on the detection block (50) in the upward movement process, so that the detection block (50) moves outwards until the detection rod abuts against the inner hole wall of the workpiece (10) to be detected.
2. A workpiece internal bore inspection apparatus as defined in claim 1, wherein: at least two first movable holes (31) are arranged along the circumferential direction of the positioning seat (30) at intervals, and at least two corresponding detection blocks (50) are arranged.
3. A workpiece internal bore inspection apparatus as claimed in claim 2, wherein: the taper angle of the upper end conical surface of the detection rod (60) is alpha, and the value range of alpha is 2-10 degrees.
4. A workpiece internal bore inspection apparatus as defined in claim 1, wherein: the inner end of the detection block (50) is provided with a first arc-shaped surface (51) matched with the conical surface structure (61) of the detection rod (60).
5. A workpiece internal bore inspection apparatus as defined in claim 1, wherein: the device also comprises a return spring (40) arranged on the positioning seat (30), wherein the return spring (40) acts on the detection block (50) and enables the detection to always have the trend of moving inwards along the first movable hole (31).
6. The workpiece inner hole detection device as recited in claim 5, wherein: still have radial groove of stepping down (33) of seting up on positioning seat (30), should step down groove (33) with first activity hole (31) communicate with each other, have on the lateral wall of detection piece (50) and bulge its surperficial backing pin (34), should stretch into backing pin (34) in the groove of stepping down (33) to can follow the radial movement who detects piece (50) along positioning seat (30), reset spring (40) are located groove of stepping down (33) in, and support between the wall in backing pin (34) and the groove of stepping down (33).
7. A workpiece internal bore inspection apparatus as defined in claim 1, wherein: the positioning seat (30) comprises a positioning seat (30) body and a cover body (36) connected to the top end face of the positioning seat (30) body, a guide groove is formed in the top end face of the positioning seat (30) body along the radial direction of the top end face, and the guide groove is covered by the cover body (36) to form the first movable hole (31).
8. A workpiece internal bore inspection apparatus as claimed in any of claims 1 to 7 wherein: the detection mechanism further comprises a driving device (70) and a displacement detection device for detecting the displacement of the detection rod (60) in the vertical direction, and the power output end of the driving device (70) is connected with the detection rod (60).
9. A workpiece internal bore inspection apparatus as claimed in claim 8, wherein: the bottom surface of the workbench (20) is provided with a supporting seat (80), and the driving device (70) and the displacement detection device are arranged on the supporting seat (80).
10. A workpiece internal bore inspection apparatus as claimed in claim 9, wherein: the displacement detection device is a displacement sensor (71), and the detection rod (60) is provided with an induction block (62) corresponding to a detection head of the displacement sensor (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481198.3U CN213714165U (en) | 2020-10-30 | 2020-10-30 | Workpiece inner hole detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481198.3U CN213714165U (en) | 2020-10-30 | 2020-10-30 | Workpiece inner hole detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213714165U true CN213714165U (en) | 2021-07-16 |
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ID=76803025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022481198.3U Active CN213714165U (en) | 2020-10-30 | 2020-10-30 | Workpiece inner hole detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213714165U (en) |
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2020
- 2020-10-30 CN CN202022481198.3U patent/CN213714165U/en active Active
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