CN214816812U

CN214816812U - Primary clamping fixture

Info

Publication number: CN214816812U
Application number: CN202120894195.4U
Authority: CN
Inventors: 谢锋; 李东海; 高鹏; 蔡小辉; 隋延威
Original assignee: Tianjin Xiongbang Die Casting Co ltd
Current assignee: Tianjin Xiongbang Die Casting Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-23
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a clamping fixture relates to anchor clamps technical field, including main part device, closing device, strutting arrangement, central positioner, summit positioner and bear the device, main part device includes the fixed block and connects the ring, and closing device includes the supporting shoe, and strutting arrangement still includes the fixed plate and loads the box, and central positioner includes central locating piece and central compact heap, and summit positioner includes pivot and reset spring, bears the device and includes the loading board. The utility model discloses in, central positioner and summit positioner carry out the centre gripping through locating piece and compact heap, take the mode that three point location work piece center and both ends location work piece combined together to fix the fixed all processing that can accomplish of an preface to the centre gripping of work piece, avoided because of the accumulative error that location, clamping that the branch process caused produced, improved the accuracy of product processing.

Description

Primary clamping fixture

Technical Field

The utility model relates to an anchor clamps technical field, in particular to a clamping fixture.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process, and is also called a jig. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a jig.

The fixture generally comprises a positioning element (for determining the correct position of the workpiece in the fixture), a clamping device, a tool setting guide element (for determining the relative position of the tool and the workpiece or guiding the direction of the tool), an indexing device (for enabling the workpiece to complete the processing of a plurality of stations in one installation, including a rotary indexing device and a linear movement indexing device), a connecting element, a fixture body (fixture base), and the like

In the mechanical design and manufacturing process, size chain problems are prevalent. In assembling the parts into the machine, i.e. the relevant dimensions on the parts are combined and accumulated. Due to manufacturing tolerances in the dimensions of the parts, there is also a combination and accumulation of errors during assembly. The total error formed after accumulation will affect the working performance and quality of the machine. This creates an interplay between dimensional errors and gross errors of the part. The design of tooling fixtures is no exception. It is important to properly size and position the parts.

In the prior art, the clamping fixture has the defects of low product precision, poor stability and the like due to multiple positioning and clamping caused by different processes, and the generated accumulated error causes the one-time clamping fixture.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a centre gripping anchor clamps, can effectively solve among the background art centre gripping anchor clamps because of many times location, the clamping that the branch process caused, the accumulative error of production makes the product precision low and poor stability scheduling problem.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a primary clamping fixture comprises a main body device, a pressing device, a supporting device, a central positioning device, a vertex positioning device and a bearing device, wherein the main body device comprises fixed blocks and connecting rings, the fixed blocks are of plate-shaped structures, the connecting rings are symmetrically arranged at two ends of the fixed blocks, four fixed blocks are arranged, the fixed blocks are mainly fixedly connected with the connecting rings, two connecting rings are arranged, the connecting rings are mainly used as fixture bodies, the pressing device comprises supporting blocks, one ends of the supporting blocks are connected with the inner peripheral side of each connecting ring, three supporting blocks are arranged, the supporting blocks mainly support workpieces, the supporting device further comprises fixing plates and loading boxes, the rear side surfaces of the fixing plates are respectively connected with the inner surfaces of the fixed blocks, and the rear side surfaces of the loading boxes are respectively connected with the front side surfaces of the fixing plates, the center positioning device comprises a center positioning block and a center pressing block, the center positioning block is symmetrically arranged between adjacent fixing blocks, the center pressing block is arranged between the adjacent fixing blocks, the number of the center positioning blocks is two, the center positioning block mainly clamps the center of a workpiece, the vertex positioning device comprises a rotating shaft and a reset spring, the two ends of the rotating shaft are respectively connected with one side surface of a plurality of connecting rings, one end of the reset spring is connected with the right side surface of the fixing block, the bearing device comprises a bearing plate, and the upper surface of the bearing plate is connected with the lower surface of the connecting ring.

Preferably, the main part device still includes fixing bolt, and is a plurality of connect the inside a plurality of first rotatory holes that all are provided with of ring, it is a plurality of the inside a plurality of second rotatory holes that all are provided with of fixed block, it is a plurality of the position in first rotatory hole suits with a plurality of second rotatory holes respectively, and is a plurality of fixing bolt passes a plurality of first rotatory holes and a plurality of second rotatory holes in proper order, and respectively with a plurality of first rotatory holes and a plurality of second rotatory hole rotatory cooperation, wherein, fixing bolt has eight, and fixing bolt mainly assists the fixed connection ring.

Preferably, the pressing device further comprises a pressing plate and a first hydraulic rod, the lower surface of the pressing plate is respectively connected with the upper surfaces of the supporting blocks, one end of the first hydraulic rod is respectively connected with the upper surfaces of the pressing plates, the number of the pressing plate and the number of the first hydraulic rod are three, the pressing plate mainly presses the workpiece, and the first hydraulic rod mainly pushes the pressing plate.

Preferably, strutting arrangement still includes connecting spring and support block, and is a plurality of connecting spring one end is connected with a plurality of inside upper surfaces of loading box respectively, and is a plurality of support block inside upper surface is connected with a plurality of connecting spring other ends respectively, and wherein, connecting spring and support block all have twelve, and connecting spring mainly connects the support block, supports the main auxiliary stay work piece of block, and strutting arrangement sets up connecting spring and supports the block through connecting the inside annular of ring and can regard as supplementary unsteady support auxiliary clamping work piece, has increased product stability, and connecting spring weakens the vibration that the product produced in the course of working, has avoided quality problems's production.

Preferably, the center positioning device further comprises a plurality of second hydraulic rods, one end of each of the plurality of second hydraulic rods is connected with the rear side surface of the center positioning block and the rear side surface of the center pressing block respectively, the number of the second hydraulic rods is three, and the second hydraulic rods mainly push the center positioning block and the center pressing block.

Preferably, the vertex positioning device further comprises a vertex positioning block, a vertex compression block and a third hydraulic rod, a third rotating hole is formed in the vertex positioning block, the rotating shaft is in rotating fit with the third rotating hole, the other end of the reset spring is connected with the left side surface of the vertex positioning block, a clamping groove is formed in the upper surface of the vertex positioning block, the lower surface of the vertex compression block is connected with the lower surface of the inner portion of the clamping groove, one end of the third hydraulic rod is connected with the rear side surface of the vertex compression block, the central positioning device and the vertex positioning device are clamped through the positioning block and the compression block, all machining can be completed in sequence by clamping and fixing the workpieces once in a mode of combining the centers of the three-point positioning workpieces and the positioning workpieces at two ends, accumulated errors caused by sub-procedures are avoided, and the precision of product machining is improved.

Preferably, the bearing device further comprises anti-slip blocks symmetrically arranged on the lower surface of the bearing plate, wherein the number of the anti-slip blocks is four, the anti-slip blocks are mainly grounded and supported, the bearing device can increase the grounding friction force of the clamp by arranging the anti-slip block grounded and supported, the problem that the clamp is prone to shifting due to stress in the machining process is avoided, and the product machining is more stable.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. in the utility model, the supporting device can be used as an auxiliary floating support auxiliary clamping workpiece by annularly arranging the connecting spring and the supporting cap in the connecting ring, so that the stability of the product is increased, the connecting spring weakens the vibration generated by the product in the processing process, and the quality problem is avoided;

2. the utility model discloses in, central positioner and summit positioner carry out the centre gripping through locating piece and compact heap, take the mode that three point location work piece center and both ends location work piece combined together to fix the fixed all processing that can accomplish of an preface to the centre gripping of work piece, avoided because of the accumulative error that location, clamping that the branch process caused produced, improved the accuracy of product processing.

3. The utility model discloses in, bear the device and support the ground connection frictional force that can increase anchor clamps through setting up the non slipping spur ground connection, avoided the easy problem that squints of anchor clamps atress in the course of working, the product processing is more stable.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of a primary clamping fixture of the present invention;

fig. 2 is a schematic front view of a primary clamping fixture of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

fig. 4 is a schematic top view of a primary holding jig of the present invention;

fig. 5 is a schematic side view of the primary holding fixture of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a main body device; 110. a fixed block; 120. connecting the circular rings; 130. fixing the bolt; 200. a pressing device; 210. a support block; 220. pressing a plate; 230. a first hydraulic lever; 300. a support device; 310. a fixing plate; 320. loading a cartridge; 330. a connecting spring; 340. supporting the cap; 400. a central positioning device; 410. a central positioning block; 420. a central compact block; 430. a second hydraulic rod; 500. a vertex positioning device; 510. a rotating shaft; 520. a return spring; 530. a vertex positioning block; 540. a vertex compression block; 550. a third hydraulic lever; 600. a carrying device; 610. a carrier plate; 620. and (4) anti-skid blocks.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the present invention relates to a primary clamping fixture, which comprises a main body device 100, a pressing device 200, a supporting device 300, a central positioning device 400, a vertex positioning device 500 and a bearing device 600, wherein the main body device 100 comprises a fixing block 110 and two connecting rings 120, the fixing block 110 is a plate-shaped structure, the connecting rings 120 are symmetrically arranged at two ends of the fixing block 110, wherein four fixing blocks 110 are provided, the fixing block 110 is mainly fixedly connected with the connecting rings 120, the connecting rings 120 are provided with two connecting rings 120, the connecting rings 120 are mainly used as a fixture body, the pressing device 200 comprises supporting blocks 210, one ends of the supporting blocks 210 are connected with the inner peripheral side of the connecting rings 120, wherein three supporting blocks 210 are provided, the supporting blocks 210 mainly support a workpiece, the supporting device 300 further comprises a fixing plate 310 and a loading box 320, the rear side surfaces of the fixing plate 310 are respectively connected with the inner surfaces of the fixing blocks 110, the rear side surfaces of the plurality of loading boxes 320 are respectively connected with the front side surfaces of the plurality of fixing plates 310, wherein, twelve fixed plates 310 and twelve loading boxes 320, wherein the fixed plates 310 are mainly used for fixing the loading boxes 320, the loading boxes 320 are mainly used for fixedly connecting springs 330, the central positioning device 400 comprises a central positioning block 410 and a central pressing block 420, a plurality of central positioning blocks 410 are symmetrically arranged between adjacent fixed blocks 110, the central pressing block 420 is arranged between adjacent fixed blocks 110, the two central positioning blocks 410 are provided, the central positioning blocks 410 mainly clamp the center of a workpiece, the vertex positioning device 500 comprises a rotating shaft 510 and a return spring 520, two ends of the rotating shaft 510 are respectively connected with one side surface of the connecting rings 120, one end of the return spring 520 is connected with the right side surface of the fixing block 110, the bearing device 600 comprises a bearing plate 610, and the upper surface of the bearing plate 610 is connected with the lower surface of the connecting rings 120.

Further, main part device 100 still includes fixing bolt 130, a plurality of first rotatory holes all are provided with inside a plurality of connection ring 120, a plurality of fixed blocks 110 are inside all to be provided with a plurality of second rotatory holes, the position in a plurality of first rotatory holes suits with a plurality of second rotatory holes respectively, a plurality of fixing bolt 130 pass a plurality of first rotatory holes and a plurality of second rotatory holes in proper order, and respectively with a plurality of first rotatory holes and a plurality of second rotatory hole rotatory cooperation, wherein, fixing bolt 130 has eight, fixing bolt 130 mainly assists fixed connection ring 120.

Further, the pressing device 200 further includes pressing plates 220 and first hydraulic rods 230, lower surfaces of the pressing plates 220 are respectively connected with upper surfaces of the supporting blocks 210, one ends of the first hydraulic rods 230 are respectively connected with upper surfaces of the pressing plates 220, wherein the number of the pressing plates 220 and the number of the first hydraulic rods 230 are three, the pressing plates 220 mainly press the workpiece, and the first hydraulic rods 230 mainly push the pressing plates 220.

Further, the supporting device 300 further comprises a connecting spring 330 and a supporting cap 340, one end of each of the connecting springs 330 is connected with the inner upper surface of the loading boxes 320, the inner upper surface of each of the supporting cap 340 is connected with the other end of the connecting spring 330, twelve connecting springs 330 and twelve supporting caps 340 are provided, the connecting springs 330 are mainly connected with the supporting cap 340, the supporting cap 340 mainly supports the workpiece in an auxiliary manner, the supporting device 300 can serve as an auxiliary floating supporting auxiliary clamping workpiece by annularly arranging the connecting springs 330 and the supporting caps 340 in the connecting ring 120, the stability of the product is increased, the connecting springs 330 weaken vibration generated by the product in the processing process, and quality problems are avoided.

Further, the center positioning device 400 further includes a plurality of second hydraulic rods 430, one end of each of the plurality of second hydraulic rods 430 is connected to the rear side surface of the center positioning block 410 and the rear side surface of the plurality of center pressing blocks 420, wherein the number of the second hydraulic rods 430 is three, and the second hydraulic rods 430 mainly push the center positioning block 410 and the center pressing blocks 420.

Further, the vertex positioning device 500 further comprises a vertex positioning block 530, a vertex compression block 540 and a third hydraulic rod 550, a third rotating hole is formed in the vertex positioning block 530, the rotating shaft 510 is in rotating fit with the third rotating hole, the other end of the return spring 520 is connected with the left side surface of the vertex positioning block 530, a clamping groove is formed in the upper surface of the vertex positioning block 530, the lower surface of the vertex compression block 540 is connected with the lower surface of the inside of the clamping groove, one end of the third hydraulic rod 550 is connected with the rear side surface of the vertex compression block 540, the central positioning device 400 and the vertex positioning device 500 are clamped through the positioning block and the compression block, all processing can be completed in sequence by clamping and fixing workpieces at one time in a mode of combining three-point positioning workpiece centers and two-end positioning workpieces, positioning errors caused by sub-process and accumulated errors caused by clamping are avoided, and the accuracy of product processing is improved.

Further, the bearing device 600 further comprises anti-slip blocks 620, the anti-slip blocks 620 are symmetrically arranged on the lower surface of the bearing plate 610, the number of the anti-slip blocks 620 is four, the anti-slip blocks 620 are mainly grounded and supported, the bearing device 600 can increase the grounding friction force of the clamp by arranging the anti-slip blocks 620, the problem that the clamp is prone to being deviated in the machining process is avoided, and the product machining is more stable.

The working principle of the utility model is as follows;

when a person uses the device, the fixing bolt 130 is inserted into the connecting ring 120 and the rotating hole in the fixing block 110 and then is rotated and fixed to complete the assembly of the connecting ring 120, the anti-slip block 620 is supported in a grounding manner, a workpiece is placed in the connecting ring 120, the supporting block 210 supports the bottom of the workpiece, the first hydraulic rod 230 extends under the assistance of the oil cylinder to press the pressing plate 220 to press the upper surface of the workpiece from above to complete the up-and-down pressing and fixing of the workpiece, the second hydraulic rod 430 extends under the assistance of the oil cylinder to push the central positioning block 410 and the central pressing block 420 to perform three-point clamping and fixing of the center of the product to the center of the workpiece, the workpiece abuts against the vertex positioning block 530, the vertex positioning block 530 rotates around the rotating shaft 510, the return spring 520 is stretched, the third hydraulic rod 550 extends under the assistance of the oil cylinder to push the vertex pressing block 540 to abut against the clamping groove on the vertex positioning block 530 to match with the central pressing block 420 to complete the clamping and fixing of the two ends of the workpiece, meanwhile, the support cap 340 contacts with the peripheral side of the workpiece, and the connection spring 330 is compressed to the loading box 320 to assist in supporting the workpiece through elastic recovery and to buffer and absorb the shock to which the machining of the fixture is subjected.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A primary clamping fixture comprises a main body device (100), a pressing device (200), a supporting device (300), a central positioning device (400), a vertex positioning device (500) and a bearing device (600), and is characterized in that: the main body device (100) comprises fixed blocks (110) and connecting rings (120), the fixed blocks (110) are of plate-shaped structures, the connecting rings (120) are symmetrically arranged at two ends of the fixed blocks (110), the pressing device (200) comprises supporting blocks (210), one ends of the supporting blocks (210) are connected with the inner peripheral side of the connecting rings (120), the supporting device (300) further comprises a fixed plate (310) and a loading box (320), the rear side surfaces of the fixed plates (310) are respectively connected with the inner surfaces of the fixed blocks (110), the rear side surfaces of the loading box (320) are respectively connected with the front side surfaces of the fixed plates (310), the central positioning device (400) comprises a central positioning block (410) and a central pressing block (420), and the central positioning blocks (410) are symmetrically arranged between the adjacent fixed blocks (110), center compact heap (420) sets up between adjacent fixed block (110), summit positioner (500) are including pivot (510) and reset spring (520), pivot (510) both ends are connected with a plurality of rings (120) of being connected one side surface respectively, reset spring (520) one end and fixed block (110) right side surface connection, bear device (600) including loading board (610), loading board (610) upper surface and the lower surface connection of connecting ring (120).

2. A primary holding jig as set forth in claim 1, wherein: main part device (100) still includes fixing bolt (130), and is a plurality of connect ring (120) inside all is provided with a plurality of first rotatory holes, and is a plurality of fixed block (110) inside all is provided with a plurality of second rotatory holes, and is a plurality of the position in first rotatory hole suits with a plurality of second rotatory holes respectively, and is a plurality of fixing bolt (130) pass a plurality of first rotatory holes and a plurality of second rotatory holes in proper order, and respectively with a plurality of first rotatory holes and a plurality of second rotatory hole normal running fit.

3. A primary holding jig as set forth in claim 1, wherein: the pressing device (200) further comprises pressing plates (220) and first hydraulic rods (230), the lower surfaces of the pressing plates (220) are respectively connected with the upper surfaces of the supporting blocks (210), and one ends of the first hydraulic rods (230) are respectively connected with the upper surfaces of the pressing plates (220).

4. A primary holding jig as set forth in claim 1, wherein: the supporting device (300) further comprises a connecting spring (330) and a supporting cap (340), one end of the connecting spring (330) is connected with the inner upper surface of the loading boxes (320) respectively, and the inner upper surface of the supporting cap (340) is connected with the other end of the connecting spring (330) respectively.

5. A primary holding jig as set forth in claim 1, wherein: the center positioning device (400) further comprises a plurality of second hydraulic rods (430), and one ends of the plurality of second hydraulic rods (430) are respectively connected with the rear side surface of the center positioning block (410) and the rear side surfaces of the plurality of center pressing blocks (420).

6. A primary holding jig as set forth in claim 1, wherein: the vertex positioning device (500) further comprises a vertex positioning block (530), a vertex pressing block (540) and a third hydraulic rod (550), a third rotating hole is formed in the vertex positioning block (530), the rotating shaft (510) is in rotating fit with the third rotating hole, the other end of the reset spring (520) is connected with the left side surface of the vertex positioning block (530), a clamping groove is formed in the upper surface of the vertex positioning block (530), the lower surface of the vertex pressing block (540) is connected with the inner lower surface of the clamping groove, and one end of the third hydraulic rod (550) is connected with the rear side surface of the vertex pressing block (540).

7. A primary holding jig as set forth in claim 1, wherein: the bearing device (600) further comprises anti-skidding blocks (620), and the anti-skidding blocks (620) are symmetrically arranged on the lower surface of the bearing plate (610).