Zero-point quick-change clamp with limiting structure

Abstract

The utility model relates to the technical field of zero point clamps, and discloses a zero point quick-change clamp with a limiting structure, which comprises a base structure, connecting structures are arranged at four corners of the upper end of the base structure, fixing structures are arranged at the upper ends of the connecting structures, and the base structure comprises a positioning bottom plate. The connecting structure comprises a connecting plate, the fixing structure comprises a zero-point clamp body, a plurality of first clamping holes are formed in the two sides, close to the center of the connecting plate, of the upper end of the connecting plate, a plurality of second clamping holes are formed in the four corners of the upper end of the zero-point clamp body, and the clamping mechanism comprises a threaded rod. The outer wall of the rod body of the threaded rod is sleeved with four threaded sleeves. According to the zero-point clamp, the lower end of the connecting plate is clamped with the corresponding fixing groove of the positioning bottom plate, and the connecting plate and the positioning bottom plate are fixed through the connecting bolt, so that the zero-point clamp is suitable for fixing different types of connecting structures and further suitable for replacing different types of zero-point clamp main bodies.

Description

TECHNICAL FIELD

[0001] The utility model relates to zero point fixture technical field especially relates to a zero point quick change fixture with limiting structure. BACKGROUND

[0002] The replacement technology of zero point fixture is constantly evolving with the rapid development of manufacturing industry and automation equipment. Zero point fixture is a clamping tool that improves machining efficiency and precision, and is widely used in CNC (Computer Numerical Control) machining, mold manufacturing, aerospace and other fields. Traditional fixtures are usually designed for specific types and sizes of workpieces, with fixed structure, which is difficult to adapt to different types of connection structure and size shape of zero point fixture body. When it is necessary to process different types of workpieces and replace the fixture, the entire fixture system may need to be replaced, which is costly and time-consuming.

[0003] Therefore, the skilled person in the art provides a zero point quick change fixture with limiting structure to solve the problems raised in the background art. SUMMARY

[0004] The utility model discloses a zero point quick change fixture with limiting structure to solve the problems existing in the prior art, the lower end of the connecting plate is clamped in the fixed groove corresponding to the positioning bottom plate, and the two are fixed by means of connecting bolts, which is convenient for fixing different types of connection structure, and further adapting to replace different types of zero point fixture body.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A zero point quick change fixture with limiting structure, comprising a base structure, four corners of the upper end of the base structure are provided with a connecting structure, the upper end of the connecting structure is provided with a fixed structure, the base structure comprises a positioning bottom plate, the connecting structure comprises a connecting plate, the fixed structure comprises a zero point fixture body, a plurality of first clamping holes are formed on both sides of the connecting plate near the center of the connecting plate, a plurality of second clamping holes are formed at four corners of the upper end of the zero point fixture body.

[0007] Two clamping mechanisms are arranged at four corners of the upper end of the zero point fixture body, the clamping mechanism comprises a threaded rod, four threaded sleeves are sleeved on the outer wall of the threaded rod, a threaded connecting rod is fixedly connected to the lower end of the threaded rod, a hinge seat is fixedly connected to the front end and the rear end of the outer wall of the threaded sleeve, a hinge clamping rod is hingedly connected to the middle part of the hinge seat, a connecting rod is arranged at the front end and the rear end of the hinge seat, and the middle part of the hinge clamping rod is fixed by means of the corresponding connecting rod.

[0008] Through the technical scheme, the first clamping holes and the second clamping holes provided on the connecting plate and the zero-point clamp body correspond to each other, and installation paths are provided for the clamping mechanism. When the clamping mechanism is installed, the connecting rod is first moved downward, so that the clamping mechanism is smoothly inserted through the corresponding second clamping holes and first clamping holes on the zero-point clamp body and the connecting plate. Then, the threaded rod is rotated by means of a tool, so that the lower end of the threaded rod is threadedly connected with the threaded holes in the positioning bottom plate, thereby achieving preliminary fixation. When the threaded rod is rotated, the plurality of threaded sleeves provided on the outer wall of the threaded rod move downward, thereby assisting the movement of the connecting rod and driving the hinged clamping rod to move, and finally the hinged clamping rod is tightly clamped and fixed in the corresponding clamping hole. In this way, the zero-point clamp body can be quickly installed and disassembled, the changeover time is shortened, the machining precision is effectively improved, and in addition, the installation of zero-point clamp bodies of the same type but different sizes and shapes can be adapted, the universality is high, the demand for special fixtures is reduced, the operation process is simple, and the operator is easy to master.

[0009] Further, the connecting plate and the zero-point clamp body are fixedly connected with sliding plates at the lower ends thereof, the front end and the rear end of the outer wall of the positioning bottom plate are provided with fixing grooves, and one end of the connecting plate away from the center of the positioning bottom plate is provided with a connecting groove.

[0010] Through the technical scheme, the connecting plate and the zero-point clamp body are fixedly connected with sliding plates at the lower ends thereof, the front end and the rear end of the outer wall of the positioning bottom plate are provided with fixing grooves, and one end of the connecting plate away from the center of the positioning bottom plate is provided with a connecting groove.

[0011] Further, the outer wall of the sliding plate at the lower end of the connecting plate and the zero-point clamp body is slidably connected with the inner wall of the corresponding fixing groove and the connecting groove.

[0012] Through the technical scheme, during installation, the outer wall of the sliding plate slides along the inner wall of the fixing groove and the connecting groove, and the sliding cooperation mode is similar to the relationship between a track and a sliding block, so that the connecting plate and the zero-point clamp body can quickly and accurately reach the predetermined position, thereby achieving efficient preliminary positioning.

[0013] Further, a plurality of threaded holes are provided at the upper end of the positioning bottom plate, and two connecting bolts are arranged at the upper front end and the upper rear end of the connecting plate.

[0014] Through the technical scheme, the plurality of threaded holes provided at the upper end of the positioning bottom plate and the connecting bolts arranged at the upper front end and the upper rear end of the connecting plate jointly form a reliable and adjustable fastening connection structure. The connecting bolts pass through the connecting holes provided at the upper end of the connecting plate and are screwed into the corresponding threaded holes in the positioning bottom plate for threaded fixation.

[0015] Further, a plurality of connecting holes are formed on both sides of the upper end of the connecting plate, and the connecting bolts are all threaded through the corresponding connecting holes and are fixed in threaded holes of the positioning base plate;

[0016] The connecting plate is tightly fixed on the positioning base plate, thereby ensuring the stability of the whole fixture structure when bearing machining load.

[0017] Further, a plurality of clamping holes are formed on both sides of the inner wall of the first and second clamping holes, and the lower ends of the articulated clamping rods are clamped with the corresponding clamping holes.

[0018] The plurality of clamping holes formed on both sides of the inner wall of the first and second clamping holes and the articulated clamping rods form a multi-directional limiting and quick locking structure.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1. The zero-point quick-change fixture with a limiting structure has a connecting groove formed on the connecting structure, and the lower end of the zero-point fixture body is clamped with the connecting groove, so that the zero-point fixture body can be quickly positioned during installation.

[0021] 2. The lower end of the connecting plate is clamped with the corresponding fixing groove of the positioning base plate, and the two are fixed by means of connecting bolts, which is convenient for fixing different types of connecting structures and further adapting to the replacement of different types of zero-point fixture bodies. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1The utility model provides a zero point quick change clamp with limiting structure's axial drawing of axle;

[0023] Figure 2 The utility model provides a zero point quick change clamp with limiting structure's explosion map;

[0024] Figure 3 The utility model provides a zero point quick change clamp base structure's axial drawing of axle with limiting structure;

[0025] Figure 4 The utility model provides a zero point quick change clamp connecting structure's explosion map with limiting structure;

[0026] Figure 5 The utility model provides a zero point quick change clamp fixed structure's structure schematic view with limiting structure;

[0027] Figure 6 The utility model provides a zero point quick change clamp clamping mechanism's axial drawing with limiting structure;

[0028] Figure 7 The utility model provides a zero point quick change clamp clamping mechanism's structure schematic view with limiting structure;

[0029] Figure 8 The utility model provides a zero point quick change clamp fixed structure's local schematic view with limiting structure.

[0030] Legend:

[0031] 1, base structure, 101, positioning bottom plate, 102, fixed groove, 103, screw hole,

[0032] 2, connecting structure, 201, connecting plate, 202, connecting bolt, 203, connecting groove, 204, first clamping hole,

[0033] 3, fixed structure, 301, zero point clamp main body, 302, sliding plate, 303, second clamping hole, 304, clamping hole,

[0034] 4, clamping mechanism, 401, threaded rod, 402, threaded connecting rod, 403, threaded sleeve, 404, connecting rod, 405, hinged seat, 406, hinged clamping rod. Specific embodiments

[0035] Specific embodiments of the present application will be described in detail below with reference to the drawings, and the technical solutions in the specific embodiments of the present application will be described clearly and completely. Obviously, the described specific embodiments are only a part of the specific embodiments of the present application, rather than all the specific embodiments. Based on the specific embodiments of the present application, all other specific embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] With reference to Figures 1-8 The present application provides a specific embodiment:

[0037] A zero-point quick-change clamp with a limiting structure, comprising a base structure 1, four corners of the upper end of the base structure 1 are provided with connecting structures 2, the upper end of the connecting structure 2 is provided with a fixed structure 3, the base structure 1 comprises a positioning bottom plate 101, the connecting structure 2 comprises a connecting plate 201, the fixed structure 3 comprises a zero-point clamp main body 301, a plurality of first clamping holes 204 are formed on both sides of the upper end of the connecting plate 201 close to the center of the connecting plate 201, a plurality of second clamping holes 303 are formed at the four corners of the upper end of the zero-point clamp main body 301;

[0038] Two clamping mechanisms 4 are arranged at the four corners of the upper end of the zero-point clamp main body 301, the clamping mechanism 4 comprises a threaded rod 401, four threaded sleeves 403 are sleeved on the outer wall of the rod body of the threaded rod 401, a threaded connecting rod 402 is fixedly connected to the lower end of the threaded rod 401, a hinge seat 405 is fixedly connected to the front end and the rear end of the outer wall of the threaded sleeve 403, a hinge clamping rod 406 is hingedly connected to the middle part of the hinge seat 405, a connecting rod 404 is arranged at the front end and the rear end of the hinge seat 405, and the middle part of the hinge clamping rod 406 is fixed through the corresponding connecting rod 404;

[0039] The first clamping holes 204 and the second clamping holes 303 are correspondingly arranged on the connecting plate 201 and the zero-point clamp body 301, and provide installation paths for the clamping mechanism 4. When the clamping mechanism 4 is installed, the connecting rod 404 is first moved downward, so that the clamping mechanism 4 is smoothly inserted into the corresponding second clamping holes 303 and the first clamping holes 204 of the zero-point clamp body 301 and the connecting plate 201. Then, the threaded rod 401 is rotated by means of a tool, so that the lower end threaded connecting rod 402 is screwed into the threaded hole 103 on the positioning bottom plate 101, thereby achieving preliminary fixation. When the threaded rod 401 is rotated, the plurality of threaded sleeves 403 sleeved on the outer wall of the threaded rod 401 move downward, which assists in moving the connecting rod 404 and driving the hinged clamping rod 406 to move in a hinged manner, so that the hinged clamping rod 406 is finally tightly clamped and fixed in the corresponding clamping hole 304. In this way, the zero-point clamp body 301 can be quickly installed and disassembled, the changeover time is shortened, the machining precision is effectively improved, and the installation of zero-point clamp bodies 301 of the same type but different sizes and shapes can be adapted, thereby improving the versatility, reducing the demand for special clamps, and simplifying the operation process and making it easier for operators to master.

[0040] The lower ends of the connecting plate 201 and the zero-point clamp body 301 are fixedly connected with the sliding plates 302, the front ends and the rear ends of the outer walls of the positioning bottom plate 101 are provided with the fixing grooves 102, and one end of the connecting plate 201 away from the center of the positioning bottom plate 101 is provided with the connecting groove 203.

[0041] The outer walls of the sliding plates 302 at the lower ends of the connecting plate 201 and the zero-point clamp body 301 slide with the inner walls of the corresponding fixing grooves 102 and the connecting groove 203. During installation, the outer walls of the sliding plates 302 slide along the inner walls of the fixing grooves 102 and the connecting groove 203, and the sliding cooperation mode is similar to the relationship between a track and a sliding block, so that the connecting plate 201 and the zero-point clamp body 301 can quickly and accurately reach the predetermined position, thereby achieving efficient preliminary positioning.

[0042] The upper ends of the positioning bottom plate 101 are provided with a plurality of threaded holes 103, and the two sides of the front end and the rear end of the upper part of the connecting plate 201 are provided with two connecting bolts 202. The plurality of threaded holes 103 on the upper end of the positioning bottom plate 101 and the connecting bolts 202 provided on the two sides of the front end and the rear end of the upper part of the connecting plate 201 jointly form a reliable and adjustable fastening connection structure 2. The connecting bolts 202 pass through the connecting holes provided on the two sides of the upper end of the connecting plate 201 and are screwed into the corresponding threaded holes 103 of the positioning bottom plate 101 for threaded fixation.

[0043] A plurality of connecting holes are formed on both sides of the upper end of the connecting plate 201, and the connecting bolts 202 are all threaded through the corresponding connecting holes and are screwed into the corresponding threaded holes 103 of the positioning base plate 101, so as to tightly fix the connecting plate 201 on the positioning base plate 101, thereby ensuring the stability of the entire fixture structure when bearing the machining load.

[0044] A plurality of clamping holes 304 are formed on both sides of the inner walls of the first clamping hole 204 and the second clamping hole 303, and the lower ends of the hinged clamping rods 406 are clamped with the corresponding clamping holes 304. The plurality of clamping holes 304 formed on both sides of the inner walls of the first clamping hole 204 and the second clamping hole 303 and the hinged clamping rods 406 form a multidirectional limiting and quick locking structure. When the lower end of the hinged clamping rod 406 is clamped with the clamping hole 304, the edge of the clamping hole 304 and the shape of the hinged clamping rod 406 are matched with each other in structure. In the vertical direction, the clamping hole 304 limits the up-and-down movement of the hinged clamping rod 406, thereby preventing the displacement of the zero-point fixture main body 301 in this direction.

[0045] Working principle: First, align the slide plate 302 at the lower end of the connecting plate 201 with the fixed grooves 102 at the front and rear ends of the outer walls of the positioning base plate 101, and then slide the slide plate 302 into the fixed grooves 102. At this time, the connecting plate 201 is preliminarily positioned on the positioning base plate 101. Then, slide the slide plate 302 at the lower end of the zero-point fixture main body 301 into the connecting groove 203 at one end of the connecting plate 201 away from the center of the positioning base plate 101, so as to preliminarily connect the zero-point fixture main body 301 with the connecting plate 201. In this process, the slide plate 302 is in sliding cooperation with the inner walls of the fixed grooves 102 and the connecting grooves 203, so as to guide the zero-point fixture main body 301 and the connecting plate 201 to the correct position and achieve preliminary positioning.

[0046] After the preliminary positioning of the connecting plate 201, the connecting bolts 202 are used for fastening. The connecting bolts 202 are threaded through the connecting holes at the upper end of the connecting plate 201, and then are screwed into the corresponding threaded holes 103 at the upper end of the positioning base plate 101. By rotating the connecting bolts 202, the self-locking property of the threads is utilized to generate strong axial fastening force, so as to firmly fix the connecting plate 201 on the positioning base plate 101. In this way, the connecting plate 201 will not easily displace or loosen in the subsequent machining process, thereby providing a stable installation basis for the zero-point fixture main body 301.

[0047] When the clamping mechanism 4 is installed, first, the threaded connecting rod 402 of the clamping mechanism 4 is inserted into the second clamping hole 303 at the upper end of the four corners of the zero clamp body 301, at this time, the articulated clamping rod 406 is in the initial position, and the lower end is not clamped with the clamping hole 304, then the connecting rod 404 is moved downward, so that the clamping mechanism 4 can smoothly penetrate the second clamping hole 303 of the zero clamp body 301 and the corresponding first clamping hole 204 on the connecting plate 201, then the threaded rod 401 is rotated using a tool, so that the threaded connecting rod 402 is screwed with the corresponding threaded hole 103 on the positioning bottom plate 101, realizing the preliminary fixation of the clamping mechanism 4, in the process of rotating the threaded rod 401, the plurality of threaded sleeves 403 sleeved on the outer wall of the threaded rod 401 will move downward, since the articulated seat 405 fixedly connected to the front end and the rear end of the outer wall of the threaded sleeve 403 is hingedly connected with the middle part of the articulated clamping rod 406, and the middle part of the articulated clamping rod 406 is fixed through the connecting rod 404, so the downward movement of the threaded sleeve 403 will drive the articulated clamping rod 406 to rotate around the hinge point, so that the lower end of the articulated clamping rod 406 moves to the direction of the clamping hole 304, and finally tightly clamps with the clamping hole 304 on the inner wall of the first clamping hole 204 and the second clamping hole 303, so that the zero clamp body 301 is limited and fixed from multiple directions, ensuring its position during processing, completing the installation process of the whole clamp.

[0048] When the zero clamp body 301 needs to be disassembled, first, the threaded rod 401 is reversely rotated, so that the threaded sleeve 403 moves upward, reversely rotates the articulated clamping rod 406, so that the lower end thereof is separated from the clamping hole 304, then the clamping mechanism 4 is pulled out of the first clamping hole 204 and the second clamping hole 303, then the connecting bolt 202 is loosened, the connecting plate 201 is disassembled from the positioning bottom plate 101, and finally the zero clamp body 301 is slid out of the connecting groove 203 of the connecting plate 201, completing the disassembly operation. The whole disassembly process corresponds to the installation process, and the operation is relatively simple, and the zero clamp body 301 can be quickly replaced.

[0049] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0050] Finally should be explained is: in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The terms "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] The above is only the preferred specific embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A zero-point quick-change clamp with a limiting structure, comprising a base structure (1), characterized in that: The upper end of the base structure (1) is provided with a connecting structure (2) at each of the four corners, and the upper end of the connecting structure (2) is provided with a fixing structure (3), the base structure (1) comprises a positioning bottom plate (101), the connecting structure (2) comprises a connecting plate (201), and the fixing structure (3) comprises a zero clamp main body (301), a plurality of first clamping holes (204) are formed on both sides of the upper end of the connecting plate (201) near the center of the connecting plate (201), and a plurality of second clamping holes (303) are formed at the four corners of the upper end of the zero clamp main body (301). Two clamping mechanisms (4) are arranged at the four corners of the upper end of the zero clamp main body (301), the clamping mechanism (4) comprises a threaded rod (401), four threaded sleeves (403) are sleeved on the outer wall of the rod body of the threaded rod (401), a threaded connecting rod (402) is fixedly connected to the lower end of the threaded rod (401), a hinge seat (405) is fixedly connected to the front end and the rear end of the outer wall of the threaded sleeve (403), a hinge clamping rod (406) is hingedly connected to the middle part of the hinge seat (405), and a connecting rod (404) is arranged at the front end and the rear end of the hinge seat (405).

2. The zero-point quick change clamp with limiting structure according to claim 1, characterized in that: The lower end of the connecting plate (201) and the zero clamp main body (301) is fixedly connected with a sliding plate (302), and the front end and the rear end of the outer wall of both sides of the positioning bottom plate (101) are provided with a fixed groove (102).

3. The zero-point quick change clamp with a limiting structure according to claim 2, characterized in that: The outer wall of the sliding plate (302) at the lower end of the connecting plate (201) and the zero clamp main body (301) is in sliding connection with the inner wall of the corresponding fixed groove (102) and the connecting groove (203).

4. The zero-point quick change clamp with a limiting structure according to claim 1, characterized in that: A plurality of threaded holes (103) are formed in the upper end of the positioning bottom plate (101), and two connecting bolts (202) are arranged on both sides of the front end and the rear end of the upper part of the connecting plate (201).

5. The zero-point quick change clamp with a limiting structure according to claim 4, characterized in that: A plurality of connecting holes are formed in the upper end of the connecting plate (201), the connecting bolts (202) penetrate through the corresponding connecting holes and are threadedly fixed with the corresponding threaded holes (103) of the positioning bottom plate (101).

6. The zero-point quick change clamp with a limiting structure according to claim 1, characterized in that: A plurality of clamping holes (304) are formed in the inner wall of the first clamping hole (204) and the second clamping hole (303), and the lower end of the hinge clamping rod (406) is clamped between the corresponding clamping holes (304).

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