CN110186555B - Tool fixture for on-line detection of natural frequency - Google Patents
Tool fixture for on-line detection of natural frequency Download PDFInfo
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- CN110186555B CN110186555B CN201910453072.4A CN201910453072A CN110186555B CN 110186555 B CN110186555 B CN 110186555B CN 201910453072 A CN201910453072 A CN 201910453072A CN 110186555 B CN110186555 B CN 110186555B
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- positioning
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- cam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a tool jig for detecting natural frequency on line, which comprises a positioning mechanism and a replacing mechanism, wherein the positioning mechanism is arranged on the tool jig; the positioning mechanism comprises a bottom plate, a cam assembly and a clamping assembly, wherein the cam assembly is arranged on the bottom plate; the clamping assemblies are at least provided with two groups, each group of clamping assemblies comprises a positioning plate group and a moving plate group, and the positioning plate group and the moving plate group are respectively provided with a first assembling groove and a second assembling groove; the cam assembly can be rotatably arranged and is provided with a boss, and the first assembling groove can be matched with the second assembling groove to form a limiting groove; the replacing mechanism comprises an upper pressure head, an upper supporting block and a lower supporting block which are arranged from top to bottom; the upper supporting block is provided with a plurality of upper through holes, the upper ends of the upper through holes are provided with upper positioning parts, the lower supporting block is provided with a plurality of lower through holes, and the upper ends of the lower through holes are provided with lower positioning parts; the upper pressure head is provided with a plurality of ejector rods and is connected with a driving part. The invention obviously improves the working efficiency and saves the labor cost.
Description
Technical Field
The invention relates to a tool jig, in particular to a tool jig for detecting natural frequency on line.
Background
The dynamic vibration absorber products assembled through the bolts can effectively attenuate vibration in a certain frequency range, have the advantages of simplicity, practicability and no need of changing the structure of a vehicle, and become one of important vibration attenuation means in design and debugging of automobile NVH. Due to the performance characteristics of the product, the inherent frequency attribute of the product needs to be detected 100% online, and if a conventional single clamping test method is adopted, the efficiency is low, the workload is large, the labor is wasted in batch production, and the cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a tool jig for detecting the natural frequency on line, which obviously improves the working efficiency and saves the labor cost.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a frock tool that on-line measuring natural frequency used, characterized by: comprises a positioning mechanism and a replacing mechanism;
the positioning mechanism comprises a bottom plate, a cam assembly and a clamping assembly, wherein the cam assembly is arranged on the bottom plate; the clamping assemblies are at least provided with two groups and are arranged around the circumference of the cam assembly in an arrayed mode, each group of clamping assemblies comprises a positioning plate group and a movable plate group which can move relative to the positioning plate group, and the positioning plate group and the movable plate group are respectively provided with a first assembling groove and a second assembling groove; the cam assembly is rotatably arranged and is provided with a plurality of protrusions capable of pushing the movable plate group to the positioning plate group, and after the movable plate group moves towards the positioning plate group, the first assembling groove and the second assembling groove are matched to form a limiting groove;
the replacing mechanism comprises an upper pressure head, an upper supporting block and a lower supporting block which are arranged from top to bottom; the upper supporting block is provided with a plurality of upper through holes penetrating through the upper supporting block, the upper end of each upper through hole is provided with an upper positioning part, the lower supporting block is provided with a plurality of lower through holes, the upper end of each lower through hole is provided with a lower positioning part, and the upper through holes coaxially correspond to the lower through holes; the upper pressure head is provided with a plurality of ejector rods corresponding to the upper through holes, and the upper pressure head is connected with a driving part for driving the upper pressure head to press the upper supporting block.
Preferably, the cam assembly comprises a cam and a handle, the lower end of the handle penetrates through the cam and is rotatably connected to the bottom plate, the cam and the handle are circumferentially limited, and the protrusion is located on the cam.
Preferably, the positioning plate group comprises a first positioning plate and a second positioning plate, and the first assembling grooves are two and are respectively positioned on the first positioning plate and the second positioning plate; the movable plate group comprises a first movable plate, a second movable plate and a connecting block, the second assembling grooves are provided with two parts which are respectively positioned on the first movable plate and the second movable plate, two sides of the connecting block are respectively connected with the first movable plate and the second movable plate, and the connecting block is used for extruding the protruding parts.
Preferably, the clamping assembly further comprises a guide resetting assembly arranged between the positioning plate group and the moving plate group.
Preferably, the guiding reset assembly comprises a positioning rod, a guiding rod and a reset spring; two ends of the positioning rod are respectively connected to the first positioning plate and the second positioning plate; one end of the guide rod is connected with the positioning rod, and the other end of the guide rod is matched in the guide hole of the connecting block; the reset spring is sleeved on the guide rod, and two ends of the reset spring are respectively abutted on the positioning rod and the connecting block.
Preferably, the upper positioning part and the lower positioning part are positioning grooves.
The invention has the advantages that: the positioning mechanism can clamp a plurality of test products at the same time, and the effect of online detection of the plurality of test products at the same time is realized, so that the detection efficiency is remarkably improved; after the detection is finished, the shaft lever of the product which is finished by the test is pushed into the product to be detected by the replacing mechanism, so that the product to be detected is assembled in the limit groove of the positioning mechanism and is detected, the detection efficiency is further improved, the operation of an operator is facilitated, and the labor cost is saved.
Drawings
FIG. 1 is a schematic view of a positioning mechanism provided in the present embodiment;
FIG. 2 is a schematic view of a replacement mechanism provided in the present embodiment;
fig. 3 is a schematic view of a positioning mechanism for clamping a test product according to this embodiment.
Detailed Description
The fixture for on-line detecting natural frequency according to the present invention will be further described with reference to fig. 1 to 3.
The utility model provides a frock tool that on-line measuring natural frequency used, characterized by: comprises a base, a positioning mechanism 120 and a replacing mechanism 130 which are arranged on the base;
the positioning mechanism comprises a base plate 10, a cam assembly 20 arranged on the base plate 10 and a clamping assembly 150; the clamping assemblies have at least two sets and are arranged in circumferential rows around the cam assembly 20. In this embodiment, three sets of clamping assemblies 150 are provided, each set of clamping assembly includes a positioning plate set 30 and a movable plate set 40 movable relative to the positioning plate set 30, and the facing sides of the positioning plate set 30 and the movable plate set 40 respectively have a first assembling groove 311 and a second assembling groove 411; the cam assembly 20 is rotatably arranged, and the cam assembly 20 is provided with a plurality of protrusions 221 capable of pushing the moving plate group 40 towards the positioning plate group 30, in the embodiment, three or six protrusions 221 are arranged for matching with the clamping assembly, and after the moving plate group 40 moves towards the positioning plate group 30, the first assembling grooves and the second assembling grooves are matched to form the limiting grooves 140;
the replacing mechanism comprises an upper pressure head 80, an upper supporting block 70 and a lower supporting block 60 which are arranged from top to bottom; the upper supporting block is provided with a plurality of upper through holes 71 penetrating through the upper supporting block, in this embodiment, three upper through holes 71 are provided, the upper end of each upper through hole 71 is provided with an upper positioning part 72, the lower supporting block is provided with three lower through holes 61, the upper end of each lower through hole 61 is provided with a lower positioning part 62, and the upper through holes 71 and the lower through holes 61 coaxially correspond; the upper pressure head 80 is provided with three push rods 81 corresponding to the upper through holes 71, the upper pressure head 80 is connected with a driving part 90 which drives the upper pressure head 80 to press the upper supporting block, and the driving part 90 is an air cylinder.
When the assembling device is used, a product provided with the shaft rod 111 is assembled into the limiting groove, namely, the shaft rod is matched in the first assembling groove; rotating the cam assembly 20, pressing the moving plate group 40 to the positioning plate group 30 by the convex part 221, matching the second assembling groove on the shaft rod at the same time, and matching the second assembling groove with the first assembling groove to form a limiting groove, so that the shaft rod and the test product are limited, the test product 160 starts to be detected, and the convex part 221 abuts against the moving plate group 40; after the detection is finished, the cam assembly 20 is rotated, the pressing of the lug bosses 221 on the moving plate group 40 is cancelled, the first assembling groove and the second assembling groove are separated, the three detected products are taken out, then the three products are placed on the three upper positioning parts 72 of the replacing mechanism, and then the three products to be detected are placed on the lower positioning part 62; the start drives actuating cylinder, drives ejector pin 81 and pushes down, and ejector pin 81 pushes down axostylus axostyle 111 to waiting to detect the shaft hole of product 100 in from the product 110 that detects the completion, realizes that the axostylus axostyle is detecting the completion product 110 and waiting to detect the change between the product 100, and the axostylus axostyle is changed the completion back, alright will wait to detect the product assembly to the spacing inslot to this detects. In the process, the online detection of three products can be realized simultaneously, the replacement of the three shaft levers is carried out by utilizing the replacement mechanism after the detection is completed, the detection efficiency is obviously improved, and the labor cost is reduced.
The embodiment is further configured as follows: the cam assembly 20 comprises a cam 22 and a handle 21, the lower end of the handle 21 passes through the cam 22 and is mounted on the base plate 10 through a bearing, the cam and the handle 21 are circumferentially arranged in a limiting manner, namely the cam is assembled on the handle 21 through a polygonal connecting hole, or the cam is integrally formed on the handle 21, the top end of the handle 21 is provided with a plurality of holding rods 211, and the protruding part 221 is positioned on the cam. This configuration can facilitate rotation of the cam member 20 and the projections 221 can compress the retainer plate assembly 30 during rotation. In the testing process, operating personnel can manually hold on holding the pole to guarantee the stability of centre gripping subassembly to the product centre gripping, of course, in actual testing process, even operating personnel does not hold handle 21, handle 21 also can not rotate naturally.
The embodiment is further configured as follows: the positioning plate group 30 comprises a first positioning plate 31 and a second positioning plate 32 which are parallel to each other, the first positioning plate 31 and the second positioning plate 32 can be fixed on the bottom plate 10 in an inserting and welding manner, and the number of the first assembling grooves is two and is respectively located on the first positioning plate 31 and the second positioning plate 32; the moving plate group 40 includes a first moving plate 41, a second moving plate 43, and a connecting block 42, the second assembling groove has two and is respectively located on the first moving plate 41 and the second moving plate 43, two sides of the connecting block 42 are respectively welded with the first moving plate 41 and the second moving plate 43, and the connecting block is pressed by the protrusion 221. During operation, the protruding portion 221 is pressed against the connecting block 42, and the movable plate group 40 is pressed towards the positioning plate group 30, so that the first assembling groove and the second assembling groove are matched to form a limiting groove, and the shaft rod of the test product is limited.
The embodiment is further configured as follows: the clamping assembly further includes a guiding and returning assembly 50 disposed between the positioning plate assembly 30 and the moving plate assembly 40, wherein the guiding and returning assembly 50 can ensure the stability of the movement of the moving plate assembly 40 relative to the positioning plate assembly 30, and when the cam assembly 20 releases the pressure, the moving plate assembly 40 can move back to the positioning plate assembly 30 by itself, i.e., return, so as to facilitate the next detection operation.
The embodiment is further configured as follows: the guide resetting assembly 50 comprises a positioning rod 51, a guide rod 52 and a resetting spring 53; two ends of the positioning rod 51 are respectively connected to the first positioning plate 31 and the second positioning plate; one end of the guide rod 52 is connected to the positioning rod 51, and the other end of the guide rod is matched in a guide hole of the connecting block 42, wherein the guide hole is a counter bore; the return spring 53 is sleeved on the guide rod 52, and two ends of the return spring respectively abut against the positioning rod 51 and the connecting block 42. With this structure, the movable plate group 40 can be guided to move, and the return function of the movable plate group 40 can be realized.
As another embodiment of this embodiment, the guiding and returning assembly 50 includes a guiding groove opened on the bottom plate 10, a guiding block formed at the bottom of the first moving plate and the second moving plate in a matching manner, the guiding block is fitted in the guiding groove, and a returning spring is disposed in the guiding groove.
The embodiment is further configured as follows: the upper positioning part 72 and the lower positioning part 62 are positioning grooves which can facilitate direct placement and positioning of the detected product and facilitate the completion of shaft rod replacement operation.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The utility model provides a frock tool that on-line measuring natural frequency used, characterized by: comprises a positioning mechanism and a replacing mechanism;
the positioning mechanism comprises a bottom plate, a cam assembly and a clamping assembly, wherein the cam assembly is arranged on the bottom plate; the clamping assemblies are at least provided with two groups and are arranged around the circumference of the cam assembly in an arrayed mode, each group of clamping assemblies comprises a positioning plate group and a moving plate group capable of moving relative to the positioning plate group, and the positioning plate group and the moving plate group are respectively provided with a first assembling groove and a second assembling groove; the cam assembly is rotatably arranged on the bottom plate and is provided with a plurality of protrusions capable of pushing the moving plate group to the positioning plate group, and after the moving plate group moves towards the positioning plate group, the first assembling groove and the second assembling groove are matched to form a limiting groove;
the replacing mechanism comprises an upper pressure head, an upper supporting block and a lower supporting block which are arranged from top to bottom; the upper supporting block is provided with a plurality of upper through holes penetrating through the upper supporting block, the upper end of each upper through hole is provided with an upper positioning part, the lower supporting block is provided with a plurality of lower through holes, the upper end of each lower through hole is provided with a lower positioning part, and the upper through holes coaxially correspond to the lower through holes; the upper pressure head is provided with a plurality of ejector rods corresponding to the upper through holes, and the upper pressure head is connected with a driving part for driving the upper pressure head to press the upper supporting block.
2. The tool fixture for detecting the natural frequency on line as claimed in claim 1, wherein: the cam component comprises a cam and a handle, the lower end of the handle penetrates through the cam to be connected onto the bottom plate in a rotating mode, the cam and the handle are circumferentially limited, and the protruding portion is located on the cam.
3. The tool fixture for detecting the natural frequency on line as claimed in claim 2, wherein: the positioning plate group comprises a first positioning plate and a second positioning plate, and the first assembling grooves are provided with two positioning plates and are respectively positioned on the first positioning plate and the second positioning plate; the movable plate group comprises a first movable plate, a second movable plate and a connecting block, the second assembling grooves are provided with two parts which are respectively positioned on the first movable plate and the second movable plate, two sides of the connecting block are respectively connected with the first movable plate and the second movable plate, and the connecting block is used for extruding the protruding parts.
4. The tool fixture for detecting the natural frequency on line as claimed in claim 3, wherein: the clamping assembly further comprises a guide resetting assembly arranged between the positioning plate group and the moving plate group.
5. The tool fixture for detecting the natural frequency on line as claimed in claim 4, wherein: the guide reset assembly comprises a positioning rod, a guide rod and a reset spring; two ends of the positioning rod are respectively connected to the first positioning plate and the second positioning plate; one end of the guide rod is connected with the positioning rod, and the other end of the guide rod is matched in the guide hole of the connecting block; the reset spring is sleeved on the guide rod, and two ends of the reset spring are respectively abutted on the positioning rod and the connecting block.
6. The tool fixture for detecting the natural frequency on line as claimed in claim 1, wherein: the upper positioning part and the lower positioning part are positioning grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453072.4A CN110186555B (en) | 2019-05-28 | 2019-05-28 | Tool fixture for on-line detection of natural frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453072.4A CN110186555B (en) | 2019-05-28 | 2019-05-28 | Tool fixture for on-line detection of natural frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110186555A CN110186555A (en) | 2019-08-30 |
| CN110186555B true CN110186555B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910453072.4A Active CN110186555B (en) | 2019-05-28 | 2019-05-28 | Tool fixture for on-line detection of natural frequency |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101030325B1 (en) * | 2009-08-25 | 2011-04-20 | 한국프랜지공업 주식회사 | Apparatus for measuring natural frequency of dynamic damper |
| CN104713454B (en) * | 2015-01-30 | 2017-08-11 | 上海众力汽车部件有限公司 | A kind of circularity cubing of inspection multiple product |
| CN207036444U (en) * | 2017-06-30 | 2018-02-23 | 北京汽车研究总院有限公司 | A kind of dynamic vibration absorber intrinsic frequency test fixture |
| CN207132976U (en) * | 2017-09-08 | 2018-03-23 | 北京汽车研究总院有限公司 | A kind of dynamic vibration absorber intrinsic frequency test fixture |
| CN109682458B (en) * | 2019-03-05 | 2024-05-10 | 重庆克来智能科技有限公司 | Detection machine tool and device for detecting natural frequency of part |
| CN109738210A (en) * | 2019-03-15 | 2019-05-10 | 浙江众泰汽车制造有限公司 | A kind of automobile driving axle dynamic vibration absorber performance testing device and its test method |
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2019
- 2019-05-28 CN CN201910453072.4A patent/CN110186555B/en active Active
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