CN219403317U - Clamping mechanism, positioning fixture and machine tool - Google Patents
Clamping mechanism, positioning fixture and machine tool Download PDFInfo
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- CN219403317U CN219403317U CN202320276090.1U CN202320276090U CN219403317U CN 219403317 U CN219403317 U CN 219403317U CN 202320276090 U CN202320276090 U CN 202320276090U CN 219403317 U CN219403317 U CN 219403317U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a clamping mechanism, a positioning fixture and a machine tool, which belong to the field of machine tools and comprise a bottom plate, a driving piece, a left-right screw rod, a first sliding block component, a second sliding block component, a first centering pressing block and a second centering pressing block, wherein the left-right screw rod and the driving piece are both arranged on the bottom plate, the driving piece is in transmission connection with the left-right screw rod and drives the left-right screw rod to rotate, one end of the left-right screw rod is provided with left-right external threads, the other end of the left-right screw rod is provided with right-hand external threads, the first sliding block component is arranged on the bottom plate and is matched with the left-hand external threads, the second sliding block component is arranged on the bottom plate and is matched with the right-hand external threads, a clamping area for clamping a workpiece is formed between the first sliding block component and the second sliding block component, the first centering pressing block and the second centering pressing block are opposite to each other, the first centering pressing block is fixedly connected with the first sliding block component, and the second centering pressing block is fixedly connected with the second sliding block. The installation accuracy is higher, does not need the manual work to correct the processing, uses manpower sparingly, improves production efficiency. The application also relates to a clamp comprising the clamping mechanism and a machine tool.
Description
Technical Field
The utility model relates to the field of machine tools, in particular to a clamping mechanism, a positioning clamp comprising the clamping mechanism and a machine tool.
Background
The existing horizontal machine tool is usually processed in a manual positioning mode when a shell part is processed, because a workpiece is large, one end is usually fixed manually, then the other end is adjusted and pressed tightly, so that the installation accuracy is low, correction processing is needed manually, the workload is large, the labor is wasted, and the production efficiency is low.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the utility model is to provide a clamping mechanism for improving the positioning precision of a workpiece.
In order to overcome the defects in the prior art, the second aim of the utility model is to provide a positioning fixture for improving the positioning precision of a workpiece.
In order to overcome the defects in the prior art, the third purpose of the utility model is to provide a machine tool for improving the positioning precision of a workpiece.
One of the purposes of the utility model is realized by adopting the following technical scheme:
the utility model provides a clamping mechanism, includes bottom plate, driving piece, its characterized in that: still include left and right-handed screw, first slider subassembly, second slider subassembly, first centering briquetting and second centering briquetting, left and right-handed screw and driving piece are all installed on the bottom plate, driving piece and left and right-handed screw transmission are connected and drive left and right-handed screw is rotatory, left and right-handed screw one end is equipped with left-handed external screw, and the other end is equipped with right-handed external screw, first slider subassembly install on the bottom plate and with left-handed external screw cooperatees, second slider subassembly install on the bottom plate and with right-handed external screw cooperatees, form the clamp area that is used for pressing from both sides the clamp to wait the machined part between first slider subassembly and the second slider subassembly, first centering briquetting is just right with second centering briquetting each other, first centering briquetting with first slider subassembly fixed connection, second centering briquetting with second slider subassembly fixed connection.
Further, the first slider assembly comprises a left-handed nut and a first slider, the left-handed nut is provided with left-handed internal threads, the left-handed nut is matched with the left-handed external threads, and the first slider is sleeved outside the left-handed nut and is fixedly connected with the left-handed nut.
Further, the first slider assembly further comprises a first slider seat, the first slider seat is mounted on the bottom plate, and the first slider is mounted on the first slider seat and is in sliding connection with the first slider seat.
Further, the second slider assembly comprises a right-handed nut and a second slider, the right-handed nut is provided with a right-handed internal thread, the right-handed nut is matched with the right-handed external thread, and the second slider is sleeved outside the right-handed nut and is fixedly connected with the right-handed nut.
Further, the second slider assembly further comprises a second slider seat, the second slider seat is mounted on the bottom plate, and the second slider is mounted on the second slider seat and is in sliding connection with the second slider seat.
Further, the clamping mechanism further comprises a locking piece, the locking piece is sleeved on the left-handed screw and the right-handed screw, and the locking piece can limit the axial movement of the left-handed screw and the right-handed screw.
Further, the clamping mechanism further comprises a supporting component, the supporting component is installed between the first sliding block component and the second sliding block component, the supporting component comprises a supporting seat and a supporting sleeve, the supporting seat is installed on the bottom plate, the left-right screw is installed on the supporting seat, and the supporting sleeve is sleeved outside the left-right screw.
Further, the first centering pressing block is provided with a first clamping surface, the second centering pressing block is provided with a second clamping surface, the first clamping surface and the second clamping surface are opposite to each other, and the clamping area is formed between the first clamping surface and the second clamping surface.
The second purpose of the utility model is realized by adopting the following technical scheme:
a positioning fixture comprises any one of the clamping mechanisms.
The third purpose of the utility model is realized by adopting the following technical scheme:
a machine tool comprising any one of the clamping mechanisms described above.
Compared with the prior art, the clamping mechanism has the following beneficial effects:
(1) The clamping mechanism comprises a bottom plate, a driving piece, a left-right screw rod, a first sliding block component, a second sliding block component, a first centering pressing block and a second centering pressing block, wherein the left-right screw rod and the driving piece are arranged on the bottom plate, the driving piece is in transmission connection with the left-right screw rod and drives the left-right screw rod to rotate, one end of the left-right screw rod is provided with left-right external threads, the other end of the left-right screw rod is provided with right-hand external threads, the first sliding block component is arranged on the bottom plate and matched with the left-hand external threads, the second sliding block component is arranged on the bottom plate and matched with the right-hand external threads, a clamping area for clamping a workpiece is formed between the first sliding block component and the second sliding block component, the first centering pressing block and the second centering pressing block are opposite to each other, the first centering pressing block is fixedly connected with the first sliding block component, and the second centering pressing block is fixedly connected with the second sliding block component. The structure has the advantages of low manufacturing cost, convenient and reliable operation, better synchronization performance, higher installation precision, no need of manual correction treatment, labor saving and production efficiency improvement.
(2) The clamping mechanism also comprises a supporting assembly, a locking piece and a gasket, wherein the supporting assembly comprises a supporting seat and a supporting sleeve, the supporting seat is arranged on the bottom plate, the left-right screw is arranged on the supporting seat, the supporting sleeve, the locking piece and the gasket are sleeved outside the left-right screw, the pre-tightening rigidity is high, the clamping mechanism can be used for adjusting the centering position, and the relative positions of all related parts are ensured to be accurate and reliable when the parts are assembled. The structure is tightly connected, so that the axial movement of the left-handed screw rod and the right-handed screw rod in the rotating process can be prevented, the linear movement of the first centering pressing block and the second centering pressing block cannot be influenced, and the mounting precision of a workpiece to be machined is ensured.
(3) After the product position and the center of the first workpiece are debugged, the clamping mechanism is not required to be adjusted for subsequent product processing with the same size, and the positioning and mounting efficiency of a plurality of workpieces is effectively improved.
Drawings
FIG. 1 is an axial cross-sectional view of a clamping mechanism of the present utility model;
FIG. 2 is an enlarged view of the clamping mechanism A of FIG. 1;
fig. 3 is an enlarged view of the clamping mechanism B of fig. 1.
In the figure: 10. a bottom plate; 20. a left-right screw; 30. a first slider assembly; 31. a left-handed nut; 32. a first slider; 33. a first slider seat; 40. a second slider assembly; 41. a right-handed nut; 42. a second slider; 43. a second slider seat; 50. a first centering block; 51. a first clamping surface; 60. a second centering block; 61. a second clamping surface; 70. a driving member; 80. a support assembly; 81. a support base; 82. a support sleeve; 90. a locking member; 100. and a gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Fig. 1-3 illustrate a clamping mechanism of the present utility model, including a base plate 10, a left-handed screw 20, a first slider assembly 30, a second slider assembly 40, a first centering block 50, a second centering block 60, a driver 70, a support assembly 80, a locking member 90, and a washer 100.
In this embodiment:
the left-right screw 20 is mounted on the bottom plate 10, one end of the left-right screw 20 is provided with left-hand external threads, and the other end is provided with right-hand external threads. In this embodiment, the cross-sectional shape of the external thread may be a triangular thread, a rectangular thread, a trapezoidal thread, or a zigzag thread. Preferably, the external thread has a trapezoid thread in cross section, the thread is deeper, the conical surface is tightly attached, the loosening is difficult, the manufacturability is good, the tooth root strength is high, and the centering is good.
The first slider assembly 30 comprises a left-handed nut 31, a first slider 32 and a first slider seat 33, wherein the left-handed nut 31 is provided with left-handed internal threads, the left-handed nut 31 is matched with the left-handed screw 20, the first slider seat 33 is arranged on the bottom plate 10, the first slider 32 is arranged on the first slider seat 33 and is in sliding connection with the first slider seat 33, and the first slider 32 is sleeved outside the left-handed nut 31 and is fixedly connected with the left-handed nut 31. In the rotation process of the left-handed screw 20, the left-handed nut 31 is converted into linear motion along with the rotation angle of the left-handed screw 20 according to the lead of the corresponding specification, and the first slider 32 can move horizontally and linearly along the first slider seat 33.
The second slider assembly 40 includes a right-handed nut 41, a second slider 42 and a second slider seat 43, the right-handed nut 41 is provided with a right-handed internal thread, the right-handed nut 41 is matched with a right-handed external thread, the second slider seat 43 is mounted on the bottom plate 10, the second slider 42 is mounted on the second slider seat 43 and is slidably connected with the second slider seat 43, and the second slider 42 is sleeved outside the right-handed nut 41 and is fixedly connected with the right-handed nut 41. The right-handed nut 41 is converted into linear motion according to the lead of the corresponding specification along with the rotation angle of the left-handed screw 20, and the second slider 42 can move horizontally and linearly along the second slider seat 43.
The first centering block 50 is provided with a first clamping surface 51, and the first centering block 50 is arranged on top of the first slider 32 and fixedly connected with the first slider 32.
The second centering pressing block 60 is provided with a second clamping surface 61, the second centering pressing block 60 is arranged at the top of the second sliding block 42 and is fixedly connected with the second sliding block 42, the first centering pressing block 50 and the second centering pressing block 60 are opposite to each other, the first clamping surface 51 and the second clamping surface 61 are opposite to each other, and a region for placing a workpiece to be machined is formed between the first clamping surface 51 and the second clamping surface 61. When the first centering pressing block 50 and the second centering pressing block 60 move towards each other, the workpiece to be machined is clamped and positioned, and a positioning reference line of the clamping mechanism is positioned at the middle position of the region of the workpiece to be machined, wherein the positioning reference line is only related to the clamping positions of the first clamping surface 51 and the second clamping surface 61 and is unrelated to the size of the workpiece.
The driving member 70 is installed on the base plate 10 and located at one side of the left-right screw 20, and the driving member 70 is in transmission connection with the left-right screw 20 and drives the left-right screw 20 to rotate. In this embodiment, the driving member 70 is a cylinder, an oil cylinder, a driving rod, a motor, an elastic member, or a motor. Preferably, the driving member 70 is a hydraulic motor, which has the advantages of small volume, light weight, simple structure, good manufacturability, insensitivity to oil pollution, impact resistance, small inertia and the like.
The support assembly 80 comprises a support seat 81 and a support sleeve 82, wherein the support seat 81 is arranged on the bottom plate 10, the left-right screw rod 20 is arranged on the support seat 81, and the support sleeve 82 is sleeved outside the left-right screw rod 20. In this embodiment, the number of the supporting seats 81 and the supporting sleeves 82 is 2, so that the left-handed screw 20 is stressed uniformly in the rotation process, and meanwhile, the workpiece to be processed is supported in the use process.
The locking member 90 is sleeved outside the left-handed screw 20 and is used for limiting the axial movement of the left-handed screw 20. The locking member 90 itself plays a supporting role, eliminates the additional axial play which may be generated by the left-handed and right-handed screw 20, has a simpler structure, and can obtain higher transmission accuracy. In this embodiment, the locking member 90 may be a nut, a screw, a bolt, or a screw.
The gasket 100 is sleeved outside the left-handed screw 20, has higher pre-tightening rigidity, can be used for adjusting the centering position, ensures the accurate and reliable relative positions of all related parts during the assembly of the parts, can prevent abrasion, and has better sealing performance and buffering performance. In this embodiment, the number of washers 100 is 2, and the washers 100 are respectively located at two sides of the supporting sleeve 82, where one washer 100 is connected with the locking member 90, so as to further ensure that the left-handed screw 20 cannot axially move during the rotation process.
In the application, the first slide block assembly 30 and the second slide block assembly 40 are respectively installed at two ends of the left-right screw rod 20, the supporting assembly 80 is installed between the first slide block assembly 30 and the second slide block assembly 40, when the driving piece 70 drives the left-right screw rod 20 to rotate clockwise, the left-handed nut 31 and the right-handed nut 41 simultaneously move inwards, so that the first slide block 32 and the second slide block 42 can move oppositely under the rotation of the left-right screw rod 20, the first centering pressing block 50 and the second centering pressing block 60 are synchronously close until the first clamping surface 51 and the second clamping surface 61 are in contact with a workpiece to be machined, and the positioning datum line of the clamping mechanism is matched with the center line of the workpiece to be positioned; when the driving member 70 drives the left-handed screw 20 to rotate anticlockwise, the left-handed nut 31 and the right-handed nut 41 are simultaneously opened outwards, so that the first sliding block 32 and the second sliding block 42 can move in opposite directions under the rotation of the left-handed screw 20, the first centering pressing block 50 and the second centering pressing block 60 are synchronously kept away, and the clamping mechanism is loosened, so that a workpiece to be machined can be taken down. The structure has the advantages of low manufacturing cost, convenient and reliable operation, better synchronization performance, higher installation precision, no need of manual correction treatment, labor saving and production efficiency improvement. The supporting component 80 and the locking piece 90 are tightly connected with the gasket 100, so that the axial movement of the left-handed screw 20 in the rotating process can be prevented, the linear movement of the first centering pressing block 50 and the second centering pressing block 60 can not be influenced, and the installation precision of a workpiece to be machined is ensured; after the product position and the center of the first workpiece are debugged, the clamping mechanism is not required to be adjusted for subsequent product processing with the same size, and the positioning and mounting efficiency of a plurality of workpieces is effectively improved.
The application also relates to a clamp comprising the clamping mechanism and a machine tool.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present utility model, which are equivalent to the above embodiments according to the essential technology of the present utility model, and these are all included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a clamping mechanism, includes bottom plate, driving piece, its characterized in that: still include left and right-handed screw, first slider subassembly, second slider subassembly, first centering briquetting and second centering briquetting, left and right-handed screw and driving piece are all installed on the bottom plate, driving piece and left and right-handed screw transmission are connected and drive left and right-handed screw is rotatory, left and right-handed screw one end is equipped with left-handed external screw, and the other end is equipped with right-handed external screw, first slider subassembly install on the bottom plate and with left-handed external screw cooperatees, second slider subassembly install on the bottom plate and with right-handed external screw cooperatees, form the clamp area that is used for pressing from both sides the clamp to wait the machined part between first slider subassembly and the second slider subassembly, first centering briquetting is just right with second centering briquetting each other, first centering briquetting with first slider subassembly fixed connection, second centering briquetting with second slider subassembly fixed connection.
2. The clamping mechanism of claim 1, wherein: the first slider assembly comprises a left-handed nut and a first slider, wherein the left-handed nut is provided with left-handed internal threads, the left-handed nut is matched with the left-handed external threads, and the first slider is sleeved outside the left-handed nut and is fixedly connected with the left-handed nut.
3. The clamping mechanism of claim 2, wherein: the first sliding block assembly further comprises a first sliding block seat, the first sliding block seat is installed on the bottom plate, and the first sliding block is installed on the first sliding block seat and is in sliding connection with the first sliding block seat.
4. The clamping mechanism of claim 1, wherein: the second slider assembly comprises a right-handed nut and a second slider, the right-handed nut is provided with right-handed internal threads, the right-handed nut is matched with the right-handed external threads, and the second slider is sleeved outside the right-handed nut and fixedly connected with the right-handed nut.
5. The clamping mechanism of claim 4, wherein: the second sliding block assembly further comprises a second sliding block seat, the second sliding block seat is installed on the bottom plate, and the second sliding block is installed on the second sliding block seat and is in sliding connection with the second sliding block seat.
6. The clamping mechanism of claim 1, wherein: the clamping mechanism further comprises a locking piece, the locking piece is sleeved on the left-handed screw and the right-handed screw, and the locking piece can limit the axial movement of the left-handed screw and the right-handed screw.
7. The clamping mechanism of claim 1, wherein: the clamping mechanism further comprises a supporting component, the supporting component is installed between the first sliding block component and the second sliding block component, the supporting component comprises a supporting seat and a supporting sleeve, the supporting seat is installed on the bottom plate, the left-right rotating screw rod is installed on the supporting seat, and the supporting sleeve is sleeved outside the left-right rotating screw rod.
8. The clamping mechanism of claim 1, wherein: the first centering pressing block is provided with a first clamping surface, the second centering pressing block is provided with a second clamping surface, the first clamping surface and the second clamping surface are opposite to each other, and the clamping area is formed between the first clamping surface and the second clamping surface.
9. A positioning fixture, characterized in that: comprising a clamping mechanism according to any of claims 1-8.
10. A machine tool, characterized in that: comprising a clamping mechanism according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320276090.1U CN219403317U (en) | 2023-02-21 | 2023-02-21 | Clamping mechanism, positioning fixture and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320276090.1U CN219403317U (en) | 2023-02-21 | 2023-02-21 | Clamping mechanism, positioning fixture and machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219403317U true CN219403317U (en) | 2023-07-25 |
Family
ID=87228802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320276090.1U Active CN219403317U (en) | 2023-02-21 | 2023-02-21 | Clamping mechanism, positioning fixture and machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219403317U (en) |
-
2023
- 2023-02-21 CN CN202320276090.1U patent/CN219403317U/en active Active
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