CN210426375U - Mechanical inner diameter measuring device - Google Patents
Mechanical inner diameter measuring device Download PDFInfo
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- CN210426375U CN210426375U CN201921583312.4U CN201921583312U CN210426375U CN 210426375 U CN210426375 U CN 210426375U CN 201921583312 U CN201921583312 U CN 201921583312U CN 210426375 U CN210426375 U CN 210426375U
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Abstract
The utility model discloses a mechanical type internal diameter measuring device, include: the device comprises an elastic wedge block mechanism, a transmission rod, a spring and a contact head; the elastic wedge block mechanism comprises a supporting body and an elastic sheet, wherein a through hole is formed in the supporting body, the elastic sheet is symmetrically arranged on the supporting body by taking the central axis of the through hole as a symmetry axis, a positioning block is arranged at one end, away from the supporting body, of the elastic sheet, and the opposite surface of the positioning block is an inclined surface; the transfer rod penetrates through the through hole on the support body, and a lug is arranged on the transfer rod; one end of the spring is arranged on the convex block of the transfer rod, and the other end of the spring is arranged on the supporting body; one end of the transfer rod close to the positioning block is provided with a cambered surface; the contact is fixedly arranged on the elastic sheet through the fixing block, and the contact is detachably connected with the fixing block. In this way, the utility model discloses can utilize the cambered surface of the inclined plane extrusion transfer bar on the locating piece to produce the displacement, will receive the displacement and transmit for the transfer bar under the condition that does not change angle and displacement volume, realize accurate internal diameter measurement.
Description
Technical Field
The utility model relates to an internal diameter measurement technical field especially relates to a mechanical type internal diameter measurement device.
Background
The inner diameter measuring device commonly used in the market at present uses two blocks to extrude a sliding rod with a conical surface to convert the left and right displacement into the vertical displacement.
The conical surface of a slide bar is extruded by two blocks, and for ensuring the accuracy of measurement, the right-angle sides of the two blocks are used for extruding the conical surface to generate displacement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a mechanical type internal diameter measurement device, can utilize the cambered surface of the inclined plane extrusion transfer bar on the locating piece to produce the displacement, will receive the displacement and transmit for the transfer bar under the condition that does not change angle and displacement volume, realize accurate internal diameter measurement.
In order to achieve the above object, the technical solution of the present invention is:
a mechanical inner diameter measurement device, comprising: the device comprises an elastic wedge block mechanism, a transmission rod, a spring and a contact head;
the elastic wedge block mechanism comprises a supporting body and elastic pieces, a through hole is formed in the supporting body, the elastic pieces are symmetrically arranged on the supporting body by taking the central axis of the through hole as a symmetry axis, a gap is formed between the elastic pieces, a positioning block is arranged at one end, away from the supporting body, of each elastic piece, and the opposite surface of each positioning block is an inclined surface;
the transfer rod penetrates through the through hole in the support body, and a convex block is arranged on the transfer rod; one end of the spring is arranged on the convex block of the transfer rod, and the other end of the spring is arranged on the support body; one end of the transfer rod, which is close to the positioning block, is provided with a cambered surface, and the transfer rod is in point-surface contact with the positioning block;
the contact head is fixedly arranged on the elastic piece through the fixing block, the contact head is detachably connected with the fixing block, the horizontal axis of the contact head is overlapped, and the contact head is abutted to a workpiece to be detected.
Preferably, the device also comprises a shell, wherein the shell is in a hollow cylindrical shape, and a fixing hole is formed in the shell; the elastic sheet is located in the shell, the supporting body penetrates through the fixing hole of the shell, and the supporting body is fixedly connected with the shell.
Preferably, the supporting body comprises a first supporting block and a second supporting block, the first supporting block and the second supporting block are vertically and fixedly connected, the first supporting block is located in the casing, and the second supporting block penetrates through the fixing hole of the casing.
Preferably, the second supporting block is provided with an external thread, and the second supporting block is connected with the shell through a bolt.
Preferably, a guide sleeve is arranged in the through hole of the support body, and the guide sleeve is in threaded connection with the support body; the transmission rod penetrates through the guide sleeve.
Preferably, the contact structure further comprises a limiting block, the limiting block is fixedly connected to the supporting body, and the limiting block is movably connected with the contact head.
Preferably, a groove is formed in the fixing block, a connecting block is arranged at one end, close to the contact head, of the limiting block, and the connecting block is located in the groove of the fixing block.
Preferably, at least one of the positioning blocks has a first contact surface and a second contact surface with a contact surface with the transmission rod, and the first contact surface and the second contact surface are both inclined surfaces.
Preferably, the fixed block is provided with an internal thread, one opposite end of the contact is provided with an external thread, and the contact is in threaded connection with the fixed block.
Preferably, the contact head is spherical with the surface of the workpiece to be measured, the spherical surface is provided with a wear-resistant layer, and the wear-resistant layer is made of hard alloy or diamond.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model has the following beneficial effect:
the utility model provides a mechanical type internal diameter measurement device utilizes the cambered surface of the inclined plane extrusion transfer bar on the locating piece to produce the displacement, will receive the displacement and transmit for the transfer bar under the condition that does not change angle and displacement volume, realizes accurate internal diameter measurement, and the contact on cambered surface and inclined plane can effectual reduction each contact point wear, has guaranteed measurement accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a mechanical internal diameter measuring device of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a bottom view of the contact position between the transmission rod and the positioning block.
Description of the drawings:
the device comprises a shell 1, a support body 21, an elastic sheet 22, a transmission rod 3, an arc surface 31, a convex block 32, a spring 4, a positioning block 5, an inclined surface 51, a limiting block 6, a fixing block 7, a contact 8 and a guide sleeve 9.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to the drawings, a mechanical inside diameter measuring device comprises: elastic wedge mechanism, transfer bar 3, spring 4 and contact 8.
The elastic wedge mechanism comprises a supporting body 21 and an elastic sheet 22, and the supporting body 21 is provided with a through hole. The two elastic pieces 22 may be symmetrically disposed on the supporting body 21 with the central axis of the through hole as the symmetry axis, and a gap for accommodating the transmission rod 3 is disposed between the elastic pieces 22. One end of the elastic piece 22 far away from the support body 21 is provided with a positioning block 5, and the opposite surface of the positioning block 5 is an inclined surface 51. The length of flexure strip 22 can set up in certain extent to can full play flexure strip 22's elastic action, flexure strip 22 just can sense the displacement change when contact 8 takes place small displacement change, thereby will drive locating piece 5 and take place the displacement change. The elastic pieces 22 may be provided in a parallelogram structure, and sandblasted using 3Cr 13. The positioning block 5 is welded on the elastic sheet 22 by hard alloy.
At least one contact surface between the positioning block 5 and the transmission rod 3 in the positioning blocks 5 comprises a first contact surface and a second contact surface, and the first contact surface and the second contact surface are both inclined surfaces 51. For example, one positioning block 5 is provided with one inclined surface 51, the other positioning block 5 is provided with two inclined surfaces 51, the inclined surfaces 51 are in contact with the arc surface 31 on the transmission rod 3, the three inclined surfaces 51 can accurately control the arc surface 31 on the transmission rod 3 on the axis of the inner diameter measuring device, and the contact between the arc surface 31 and the inclined surfaces 51 can effectively reduce the abrasion among contact points, so that the measuring accuracy is ensured.
The transfer rod 3 passes through the through hole on the support body 21, and the transfer rod 3 is provided with a lug 32. One end of the spring 4 is arranged on the projection 32 of the transfer rod 3, the other end of the spring 4 is arranged on the supporting body 21, and the spring 4 provides continuous and stable pushing force for the transfer rod 3 and is beneficial to the reset of the transfer rod 3. The spring 4 can be a compression spring 4, the spring 4 pushes the transmission rod 3 upwards, so that one end of the transmission rod 3, which is provided with the cambered surface 31, is in contact with the inclined surface 51 of the positioning block 5 on the elastic wedge mechanism, and the displacement on the elastic wedge mechanism transfers the horizontal displacement to the transmission rod 3 through the relative sliding between the inclined surface 51 and the cambered surface 31 so as to convert the horizontal displacement into the vertical displacement.
The projection 32 can be directly disposed at the middle position of the transfer rod 3, or the transfer rod 3 can be disposed in a step shape, i.e. the transfer rod 3 includes a first end of the transfer rod 3 and a second end of the transfer rod 3, the first end of the transfer rod 3 is close to the support body 21, and the diameter of the first end of the transfer rod 3 is smaller than that of the second end of the transfer rod 3. The spring 4 is now attached to the second end of the transmission rod 3, and the transmission rod 3 is first felt through the spring 4.
The transmission rod 3 is quenched by stainless steel, and the horizontal displacement transmitted by the elastic wedge block mechanism is converted into the vertical displacement. One end of the transmission rod 3 close to the positioning block 5 is provided with a cambered surface 31, and the contact surface between the transmission rod 3 and the positioning block 5 is the cambered surface 31, that is, the transmission rod 3 and the positioning block 5 are in point-surface contact, and the contact point is shown as a circular black point in fig. 3. The arc surface 31 can be realized by setting one end of the transmission rod 3 to be spherical or hemispherical, for example, setting one end of the transmission rod 3 close to the positioning block 5 to be a steel ball, and integrally forming the steel ball and the body of the transmission rod 3, where the steel ball is made of cemented carbide.
The contact 8 adopts stainless steel material sand blasting, and the contact 8 is the sphere with the one side of awaiting measuring the work piece contact, and the sphere is provided with the wearing layer, and the material of wearing layer is carbide or diamond. Contact 8 passes through fixed block 7 and fixes the setting on flexure strip 22, and contact 8 is connected for dismantling with fixed block 7, and the horizontal axis coincidence of contact 8, contact 8 and the work piece of awaiting measuring are inconsistent. Be provided with the internal thread on the fixed block 7, contact 8 is served in opposite directions and is provided with the external screw thread, and contact 8 is threaded connection with fixed block 7.
A guide sleeve 9 is arranged in the through hole of the support body 21, the guide sleeve 9 is in threaded connection with the support body 21, and the transfer rod 3 penetrates through the guide sleeve 9. The guide sleeve 9 is made of bronze material, so that the guide sleeve has good wear resistance, and the transmission rod 3 can freely slide in the guide sleeve.
Still include stopper 6, stopper 6 fixed connection is on supporter 21, stopper 6 and contact 8 swing joint. Be provided with the recess on the fixed block 7, the one end that is close to contact 8 on the stopper 6 is provided with the connecting block, and the connecting block is located the recess of fixed block 7. For example, the connecting block may be configured in a hook shape or a T shape, the connecting block is located in the groove of the limiting block 6, and since the limiting block 6 is fixed, the displacement of the elastic piece 22 can only be changed in the groove of the connecting block. The limiting block 6 limits the displacement of the elastic sheet 22 and prevents the displacement from exceeding a set displacement range, and the limiting block 6 is made of stainless steel materials through sand blasting.
In order to protect the parts of the mechanical inner diameter measuring device, the mechanical inner diameter measuring device further comprises a shell 1, the shell 1 is arranged in a hollow cylindrical shape, the shell 1 is subjected to stainless steel quenching treatment and serves as a supporting and measuring positioning part of the mechanical inner diameter measuring device, an installation foundation is provided for the elastic wedge mechanism, and meanwhile the elastic wedge mechanism and the contact head 8 are protected.
The shell 1 is provided with a fixing hole, the elastic sheet 22 is positioned in the shell 1, the support body 21 penetrates through the fixing hole of the shell 1, and the support body 21 is fixedly connected with the shell 1. The supporting body 21 may be configured to include a first supporting block and a second supporting block, the first supporting block and the second supporting block are vertically and fixedly connected, the first supporting block is located in the housing 1, and the second supporting block passes through the fixing hole of the housing 1. And the second supporting block is provided with external threads and is connected with the shell 1 through a bolt.
When the positioning block 5 is driven by the contact 8 to displace, the angle of the positioning block 5 which displaces will not change, so the angle of the inclined surface 51 on the positioning block 5 will not change, and the set proportion can be kept when the relative sliding between the inclined surface 51 and the upper arc surface 31 of the transmission rod 3 converts the displacement in the horizontal direction into the displacement in the vertical direction, and the set proportion is determined according to the angle of the inclined surface 51.
The elastic wedge mechanism is provided with an elastic sheet 22, when the positioning block 5 is driven by the contact 8 to displace, the elastic sheet 22 forms a certain angle, the generation of the angle can cause the height of the positioning block 5 to change, and the angle is determined by the displacement along with the contact 8 and the length of the elastic sheet 22. The elastic wedge block mechanism is provided with at least three inclined planes 51, the inclined planes 51 completely surround the steel ball on the transmission rod 3, and three inclined planes 51 are formed to be in contact with the arc surface 31, so that the abrasion during contact can be reduced, and the steel ball can be accurately positioned on the axis of the measuring device by the three inclined planes 51.
The mechanical inner diameter measuring device is small in abrasion and high in measuring precision, and the problem that the precision of a traditional measuring mechanism cannot be guaranteed after long-term use is solved. For measuring the inner diameters of holes of different sizes, only the length of the contact 8 needs to be changed accordingly. The device is simple and quick to operate, high in stability and capable of better meeting the requirement of batch detection of products.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (10)
1. A mechanical inside diameter measuring device, comprising: the device comprises an elastic wedge block mechanism, a transmission rod, a spring and a contact head;
the elastic wedge block mechanism comprises a supporting body and elastic pieces, a through hole is formed in the supporting body, the elastic pieces are symmetrically arranged on the supporting body by taking the central axis of the through hole as a symmetry axis, a gap is formed between the elastic pieces, a positioning block is arranged at one end, away from the supporting body, of each elastic piece, and the opposite surface of each positioning block is an inclined surface;
the transfer rod penetrates through the through hole in the support body, and a convex block is arranged on the transfer rod; one end of the spring is arranged on the convex block of the transfer rod, and the other end of the spring is arranged on the support body; one end of the transfer rod, which is close to the positioning block, is provided with a cambered surface, and the transfer rod is in point-surface contact with the positioning block;
the contact head is fixedly arranged on the elastic piece through the fixing block, the contact head is detachably connected with the fixing block, the horizontal axis of the contact head is overlapped, and the contact head is abutted to a workpiece to be detected.
2. A mechanical inside diameter measuring device according to claim 1, wherein: the shell is hollow and cylindrical, and a fixing hole is formed in the shell; the elastic sheet is located in the shell, the supporting body penetrates through the fixing hole of the shell, and the supporting body is fixedly connected with the shell.
3. A mechanical inside diameter measuring device according to claim 2, wherein: the supporting body comprises a first supporting block and a second supporting block, the first supporting block and the second supporting block are vertically and fixedly connected, the first supporting block is located in the shell, and the second supporting block penetrates through a fixing hole of the shell.
4. A mechanical inside diameter measuring device according to claim 3, wherein: and the second supporting block is provided with an external thread and is connected with the shell through a bolt.
5. A mechanical inside diameter measuring device according to claim 1, wherein: a guide sleeve is arranged in the through hole of the support body, and the guide sleeve is in threaded connection with the support body; the transmission rod penetrates through the guide sleeve.
6. A mechanical inside diameter measuring device according to claim 1, wherein: the contact terminal is characterized by further comprising a limiting block, wherein the limiting block is fixedly connected to the supporting body, and the limiting block is movably connected with the contact terminal.
7. The mechanical inside diameter measuring device of claim 6, wherein: be provided with the recess on the fixed block, be close to on the stopper the one end of contact is provided with the connecting block, the connecting block is located in the recess of fixed block.
8. A mechanical inside diameter measuring device according to claim 1, wherein: the contact surface of at least one of the positioning blocks and the transmission rod comprises a first contact surface and a second contact surface, and the first contact surface and the second contact surface are inclined surfaces.
9. A mechanical inside diameter measuring device according to claim 1, wherein: the fixed block is provided with internal threads, one end of the contact head in opposite directions is provided with external threads, and the contact head is in threaded connection with the fixed block.
10. A mechanical inside diameter measuring device according to claim 1, wherein: the contact head is spherical with the one side of awaiting measuring the work piece contact, the sphere is provided with the wearing layer, the material of wearing layer is carbide or diamond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583312.4U CN210426375U (en) | 2019-09-23 | 2019-09-23 | Mechanical inner diameter measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583312.4U CN210426375U (en) | 2019-09-23 | 2019-09-23 | Mechanical inner diameter measuring device |
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| Publication Number | Publication Date |
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| CN210426375U true CN210426375U (en) | 2020-04-28 |
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| CN201921583312.4U Active CN210426375U (en) | 2019-09-23 | 2019-09-23 | Mechanical inner diameter measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721248A (en) * | 2020-06-02 | 2020-09-29 | 南京泰普森自动化设备有限公司 | Measuring device and sensor assembly thereof |
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- 2019-09-23 CN CN201921583312.4U patent/CN210426375U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721248A (en) * | 2020-06-02 | 2020-09-29 | 南京泰普森自动化设备有限公司 | Measuring device and sensor assembly thereof |
| CN112902896A (en) * | 2020-06-02 | 2021-06-04 | 南京泰普森自动化设备有限公司 | Measuring device and sensor assembly thereof |
| CN112902896B (en) * | 2020-06-02 | 2022-05-10 | 南京泰普森自动化设备有限公司 | Measuring device and sensor assembly thereof |
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