CN210756749U - Workpiece clamping detection device - Google Patents
Workpiece clamping detection device Download PDFInfo
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- CN210756749U CN210756749U CN201921525471.9U CN201921525471U CN210756749U CN 210756749 U CN210756749 U CN 210756749U CN 201921525471 U CN201921525471 U CN 201921525471U CN 210756749 U CN210756749 U CN 210756749U
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Abstract
The utility model relates to a lathe detects technical field, in particular to work piece clamping detection device. The device comprises a positioning group and a detection group, wherein the positioning group is close to a clamping station of a workpiece to be clamped, and the detection group is connected with the positioning group through a pipeline; the positioning group comprises a fixed block fixed on one side of the workpiece and a positioning pin with an axle center penetrating through and forming a vent hole; the side edge of a workpiece to be processed is provided with a fixing block and a positioning pin which are tightly attached to the workpiece, a closed gas channel is formed in the fixing block and the positioning pin, whether the workpiece is tightly attached to the positioning pin or not is judged by detecting the gas pressure of the gas channel through a gas tightness detector, and whether the workpiece is clamped in place or not is judged. The utility model discloses simple structure is practical, and the locating pin is installed structure easy to assemble on the fixed block and is dismantled, reaches to guarantee that the work piece presss from both sides before processing and targets in place, avoids the work piece to scrap, improves production efficiency's purpose.
Description
Technical Field
The utility model relates to a lathe detects technical field, in particular to work piece clamping detection device.
Background
When machining parts on a machine tool, in order to ensure the machining accuracy, the workpiece must first be placed in a correct position, i.e. positioned, on the machine tool and then clamped. The process of positioning and clamping is called clamping of the workpiece.
When the CNC machine tool is used for machining parts, the workpiece is clamped on the clamp firstly. However, in actual operation, an operator sometimes installs the reverse workpiece, and the operator can only find whether the workpiece is clamped in place by naked eyes, so that the clamping of each workpiece cannot be ensured to be in place, which can cause machine collision and scrapping of machined parts, thereby causing economic loss and affecting production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an invention aim at provides a work piece clamping detection device, adopts the utility model provides a difficult problem of judging whether the clamping targets in place when operating personnel clamping work piece has been solved to technical scheme.
In order to solve the technical problem, the utility model provides a workpiece clamping detection device, which comprises a positioning group which is close to a clamping station of a workpiece to be clamped; the positioning group comprises a fixing block transversely penetrated with a cylindrical hole and a positioning pin with an axis penetrating with a vent hole; the positioning pin is tightly matched with one end in the cylindrical hole, and an abutting part abutting against the edge of the clamping station is formed at the top of the positioning pin; the vent hole is communicated with the cylindrical hole to form a gas channel; the gas channel is communicated with the cylindrical hole and is used for detecting the gas pressure in the gas channel.
Preferably, the abutting portion is in a shape of a circular truncated cone, and a positioning surface closely attached to the surface of the workpiece is formed on the top surface of the abutting portion.
Preferably, the positioning pin is detachably in interference fit with the cylindrical hole.
Preferably, a thread is arranged at one end of the cylindrical hole communicated with the detection group.
Preferably, the detection group comprises an air pressure detector electrically connected with the machine tool; the air pressure detector is communicated with the cylindrical hole through an air pipe.
From the above, use the utility model provides a can obtain following beneficial effect: the side edge of a workpiece to be machined is arranged on a fixing block and a positioning pin which are tightly attached to the workpiece, a closed gas channel is formed in the fixing block and the positioning pin, gas is introduced into the gas channel, whether the workpiece is tightly attached to the positioning pin or not is judged by detecting the gas pressure of the gas channel through a gas tightness detector, and whether the workpiece is clamped in place or not is judged. The utility model discloses simple structure is practical, and the locating pin is installed structure easy to assemble on the fixed block and is dismantled, reaches the purpose of guaranteeing that the work piece clamping targets in place before processing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.
FIG. 1 is a schematic structural view of a workpiece clamping and detecting device according to an embodiment of the present invention;
FIG. 2 is a diagram of a fixing block of the workpiece clamping and detecting device according to the embodiment of the present invention;
fig. 3 is the utility model discloses workpiece clamping detection device locating pin structure chart.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
When a part is machined by the CNC machine tool, a workpiece is clamped on the clamp, in actual operation, an operator sometimes can clamp the workpiece reversely or the workpiece is not clamped in place, and in the situation, the clamping of the workpiece is difficult to judge manually whether the workpiece is clamped in place.
As shown in fig. 1, in order to solve the above technical problem, the present embodiment provides a workpiece clamping and detecting device, which includes a positioning set fixed on a workbench and adjacent to a clamping station where a workpiece to be clamped is clamped, and a detecting set connected to the positioning set through a pipeline. The positioning set comprises a fixed block 10 fixed on one side of the workpiece and a positioning pin 20 with an axle center penetrating through and forming a vent hole 21. The fixed block 10 is fixed on the workbench through a bolt, a workpiece is clamped on the workbench through a clamp, and the fixed block 10 is located on one side of the workpiece.
As shown in fig. 2, a cylindrical hole 11 is transversely penetrated through the fixing block 10, a thread 12 is arranged at one end of the cylindrical hole 11, which is communicated with the detection group, an air connector can be fixed on the fixing block 10 through the thread 12 in the cylindrical hole 11, and the cylindrical hole 11 is connected with the detection group through an air pipe.
The detection group comprises an air tightness detector 30 electrically connected with the machine tool, one end of the air tightness detector 11 is provided with an air vent, the air vent is communicated with an air connector on the cylindrical hole 11 through a three-way connector and an air pipe 31, and the other passage port of the three-way connector is connected with an air source. Therefore, the air tightness detector 30, the air source and the fixing block 10 are communicated, an air passage is formed, and the air source releases air to enable a certain air pressure to be formed in the air passage.
To detect whether a workpiece is clamped in place, the present embodiment provides a locating pin 20 for abutting against the surface of the workpiece. As shown in fig. 3, the center of the positioning pin 20 is penetrated and a vent hole 21 is formed, and the vent hole 21 communicates with the gas passage of the cylindrical hole 11. The top of the positioning pin 20 is formed with an abutment 23 for abutment against the surface of the workpiece.
Specifically, the abutting portion 23 is in a truncated cone shape, and a positioning surface 22 closely attached to the surface of the workpiece is formed on the top surface of the abutting portion 23. The diameter of the positioning pin 20 is matched with that of the cylindrical hole 11, so that the positioning pin 20 is tightly matched in the cylindrical hole 11, and the positioning pin 20 is fixed on the fixing block 10. In order to seal the gas passage in the cylindrical hole 11 from the outside, the positioning pin 20 is in interference fit with the cylindrical hole 11, so that a gap is prevented from being formed between the positioning pin 20 and the cylindrical hole 11, and gas in the gas passage is prevented from leaking out of the gap.
The abutting portion 23 of the positioning pin 20 is provided with a positioning surface 22, the positioning surface 22 is parallel to the surface of the workpiece, the fixing block 10 and the workpiece are both fixed on the workbench, the fixing block 10 is fixed on one side of the workpiece, when the workpiece is clamped in place, the positioning surface 22 on the positioning pin 20 can abut against the outer surface of the workpiece, the vent hole 21 of the positioning pin 20 is located in the positioning surface 22, the vent hole 21 of the positioning pin 20 can be sealed by the surface of the workpiece, and sealing of the vent hole 21 and the gas channel in the cylindrical hole 11 is achieved.
When the workpiece is not clamped in place or the workpiece is reversely clamped, the positioning surface 22 on the abutting portion 23 is not parallel to the surface of the workpiece, and the positioning surface 22 cannot be completely attached to the surface of the workpiece, so that a gap is generated, the gas channel is not sealed, and the gas pressure in the gas channel is reduced due to gas leakage. At this time, when the air tightness detector 30 detects that the air pressure in the air passage is reduced to a set value, the air tightness detector 30 sends a signal to the machine tool to stop working, so that the problem that the workpiece is scrapped due to the fact that the workpiece is not clamped in place is solved.
The surface of the workpiece is not necessarily a completely flat surface, so the abutting part 23 on the positioning pin 20 is designed to be in a circular truncated cone shape, the area of the positioning surface 22 formed at the top of the abutting part 23 can be reduced, the positioning surface 22 with a small area only needs to abut against a small flat surface on the surface of the workpiece, and the detection of the air tightness can be completed, so that the detection of various types of workpieces is adapted.
It should be noted that, since the position of the fixed block 10 is fixed, when the size of the workpiece to be processed is small, the positioning pin 20 on the fixed block 10 cannot abut against the surface of the small-sized workpiece. In order to solve the above problem, the positioning pin 20 on the fixing block 10 of the embodiment can be detached and replaced, and since the positioning pin 20 is in interference fit in the cylindrical hole 11 of the fixing block 10, the positioning pin 20 can be separated from the fixing block 10 by knocking the positioning pin 20 from the other end of the cylindrical hole 11 by a tool, so that the positioning pin 20 with different lengths can be replaced to meet the requirement of production.
Optionally, the maximum outer diameter of the abutting portion 23 formed at the top of the positioning pin 20 matches the diameter of the cylindrical hole 11, and the diameter of the positioning pin 20 located below the abutting portion 23 may be smaller than the diameter of the cylindrical hole 11, that is, a clearance space is formed to be away from the cylindrical hole 11. This shape of the positioning pin 20 facilitates insertion into the cylindrical hole 11 and removal of the positioning pin 20.
In conclusion, a fixing block and a positioning pin tightly attached to the workpiece are arranged on the side edge of the workpiece to be machined, a closed gas channel is formed in the fixing block and the positioning pin, gas is introduced into the gas channel, and whether the workpiece is tightly attached to the positioning pin or not is judged by detecting the gas pressure of the gas channel through a gas tightness detector, so that whether the workpiece is clamped in place or not is judged. The utility model discloses simple structure is practical, and the locating pin is installed structure easy to assemble on the fixed block and is dismantled, reaches the purpose of guaranteeing that the work piece clamping targets in place before processing.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (5)
1. The utility model provides a work piece clamping detection device for the clamping location of lathe work piece detects which characterized in that: the positioning group is close to a clamping station of a workpiece to be clamped; the positioning group comprises a fixing block transversely penetrated with a cylindrical hole and a positioning pin with an axis penetrating with a vent hole; the positioning pin is tightly matched with one end in the cylindrical hole, and an abutting part abutting against the edge of the clamping station is formed at the top of the positioning pin; the vent hole is communicated with the cylindrical hole to form a gas channel; the gas channel is communicated with the cylindrical hole and is used for detecting the gas pressure in the gas channel.
2. The workpiece clamping detection device according to claim 1, characterized in that: the abutting part is in a circular truncated cone shape, and a positioning surface which is tightly attached to the surface of the workpiece to be clamped is formed on the top surface of the abutting part.
3. The workpiece clamping detection device according to claim 2, characterized in that: the positioning pin can be detachably in interference fit with the cylindrical hole.
4. The workpiece clamping detection device according to claim 3, characterized in that: and a thread is arranged at one end of the cylindrical hole communicated with the detection group.
5. The workpiece clamping detection device according to claim 4, wherein: the detection group comprises an air pressure detector electrically connected with the machine tool; the air pressure detector is communicated with the cylindrical hole through an air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525471.9U CN210756749U (en) | 2019-09-12 | 2019-09-12 | Workpiece clamping detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525471.9U CN210756749U (en) | 2019-09-12 | 2019-09-12 | Workpiece clamping detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210756749U true CN210756749U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921525471.9U Active CN210756749U (en) | 2019-09-12 | 2019-09-12 | Workpiece clamping detection device |
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| CN (1) | CN210756749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122153A (en) * | 2022-07-08 | 2022-09-30 | 一汽解放大连柴油机有限公司 | Anchor clamps gas detection device |
-
2019
- 2019-09-12 CN CN201921525471.9U patent/CN210756749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122153A (en) * | 2022-07-08 | 2022-09-30 | 一汽解放大连柴油机有限公司 | Anchor clamps gas detection device |
| CN115122153B (en) * | 2022-07-08 | 2023-10-17 | 一汽解放大连柴油机有限公司 | Device is examined to anchor clamps gas |
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