CN219254179U - Clamp - Google Patents

Abstract

The utility model discloses a clamp, which comprises a clamp body with a containing groove, wherein a supporting unit is arranged on the side wall of the containing groove, a part to be processed is placed in the containing groove, and the part to be processed is lapped on the supporting unit so that a gap is reserved between the part to be processed and the bottom of the containing groove; because the containing groove is arranged on the clamp body, the position of the containing groove is fixed, the central position of the containing groove can be determined in advance, and when a part to be processed is placed in the containing groove, the central position of the part to be processed is also determined, secondary surface marking and centering are not needed, and the problem of low efficiency caused by the fact that a three-jaw chuck is used for fixing in a traditional mode and a leveling surface and a centering rod are also needed to be used for centering is solved; moreover, the part to be processed can be lapped on the supporting unit, so that a gap is reserved between the part to be processed and the bottom of the accommodating groove, the bottom of the circumference of the part to be processed is supported, the former suspension processing is not needed, the part is easy to loose or fly during drilling is avoided, and the quality and the safety are improved.

Description

Clamp

Technical Field

The utility model belongs to the technical field of tooling fixture equipment, and relates to a fixture.

Background

Pulp molding is to utilize waste newspaper, paper box and other materials as main material, pulp with certain amount of additive, dewatering with special mold, stoving, heat treatment, shaping and other technological steps. The pulping molding product can be recycled and degraded, has good waterproof and oil-proof performances after being added into a special process, can completely replace plastic foaming products, and can effectively eliminate white pollution; meanwhile, the pulp molding technology is innovated after years of development, the equipment performance is continuously improved, the production process is gradually mature, and the cost of the pulp molding technology is obviously lower than that of a foam plastic product; pulp moulding is thus becoming increasingly widely used.

When the pulp molding is applied to the bowl cover molding field, the core of the bowl cover molding pulp molding is subjected to lathe processing and then is subjected to secondary processing such as exhaust grooves, holes and the like through an automatic machine tool, the traditional operation mode is to fix by using a three-jaw chuck, the surface is flattened by using a calibration table after fixing, and the center of a part can be found out in a middle rod part to start the processing. The method has low operation efficiency and long time for calibrating the surface, the time for one middle-level craftsman to calibrate the surface is 5-10 minutes, and the operation time for the primary craftsman is longer.

Disclosure of Invention

In view of the above, the utility model provides a clamp without secondary surface marking and centering, which solves the problem of low efficiency caused by the fact that a three-jaw chuck is used for fixing in the traditional mode, and a surface is also required to be marked by a surface correction device and centering bars are used for centering.

In order to solve the above-mentioned problems, according to one aspect of the present application, an embodiment of the present utility model provides a fixture for fixing a part to be machined, the fixture including a fixture body having a receiving groove thereon, a supporting unit provided on a sidewall of the receiving groove, the part to be machined being capable of being placed in the receiving groove and overlapping the supporting unit such that a gap is provided between the part to be machined and a bottom of the receiving groove.

In some embodiments, the support unit is a step provided on a sidewall of the receiving groove.

In some embodiments, the side wall of the accommodating groove is further provided with a fetching unit.

In some embodiments, the pick-up unit is a notch disposed on a sidewall of the accommodating groove, and the notch extends to a surface of the fixture body; the notch is provided with a positioning block.

In some embodiments, the clamp body comprises a horizontally arranged mounting surface, and the accommodating groove is formed in the mounting surface; the lower extreme of installation face is provided with the supporting legs that is used for with lathe fixed connection.

In some embodiments, two supporting feet are arranged, and the two supporting feet are respectively positioned at two sides of the lower end of the mounting surface; the supporting legs are of quadrilateral structures, and one edge of each quadrilateral structure is provided with a mounting groove for being fixedly connected with the machine tool.

In some embodiments, the fixture further comprises a fixing unit, wherein the fixing unit is located on the fixture body and arranged around the periphery of the accommodating groove and used for pressing the part to be processed in the accommodating groove.

In some embodiments, the fixing unit includes at least two fixing blocks, and one end of the fixing block, which is close to the accommodating groove, is provided with a limiting step.

In some embodiments, a cylinder is connected to the lower end of each fixing block, and drives the fixing blocks to move up and down, so that the fixing blocks are loosened and tightened.

In some embodiments, the part to be machined is a core of a bowl cover forming pulp mould.

Compared with the prior art, the clamp has at least the following beneficial effects:

the fixture provided by the utility model is used for fixing the part to be processed, and comprises a fixture body, wherein the fixture body is provided with a containing groove, the side wall of the containing groove is provided with a supporting unit, the part to be processed can be placed in the containing groove, and the supporting unit is lapped to ensure that a gap is reserved between the part to be processed and the bottom of the containing groove;

in a specific use process, as the containing groove is formed in the clamp body, the position of the containing groove is fixed, the central position of the containing groove can be determined in advance, and after a part to be processed is placed in the containing groove, the central position of the part to be processed is also determined, so that secondary surface marking and centering are not needed, and the problem of low efficiency caused by the fact that a three-jaw chuck is used for fixing in a traditional mode, a leveling surface and a centering rod are also needed to be used is solved; in addition, in the utility model, as the supporting unit is arranged on the side wall of the accommodating groove, the part to be processed can be lapped on the supporting unit, so that a gap is reserved between the part to be processed and the bottom of the accommodating groove, that is, the bottom of the circumference of the part to be processed is provided with the support, the conventional suspended processing is not needed, the part is prevented from being easily loosened or scattered during drilling, and the quality and the safety are improved.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a clamp provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of a fixture according to an embodiment of the present utility model;

FIG. 3 is a front view of a clamp provided by an embodiment of the present utility model;

FIG. 4 is a top view of a clamp provided by an embodiment of the present utility model;

FIG. 5 is another schematic view of a clamp according to an embodiment of the present utility model;

fig. 6 is a cross-sectional view of a clamp provided by an embodiment of the present utility model.

Wherein:

1. a part to be processed; 2. a clamp body; 3. a receiving groove; 4. a supporting unit; 5. a picking unit; 6. a fixing unit; 21. a mounting surface; 22. supporting feet; 23. a mounting groove; 61. and a fixed block.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the utility model with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

In the description of the present utility model, it should be clear that the terms "first," "second," and the like in the description and claims of the present utility model and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order; the terms "vertical," "transverse," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "horizontal," and the like are used for indicating an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description of the present utility model, and do not mean that the apparatus or element referred to must have a specific orientation or position, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiment provides a fixture, as shown in fig. 1-6, the fixture is used for fixing a part 1 to be processed, the fixture comprises a fixture body 2, a containing groove 3 is formed in the fixture body 2, a supporting unit 4 is formed in the side wall of the containing groove 3, the part 1 to be processed can be placed in the containing groove 3, and the supporting unit 4 is lapped to enable a gap to be formed between the part 1 to be processed and the bottom of the containing groove 3.

Specifically, the fixture body 2 is used for providing support for the part 1 to be processed, and the shape of the accommodating groove 3 is matched with the shape of the part 1 to be processed; for example, when the part 1 to be processed is a core of a bowl cover molding pulp mold, the receiving groove 3 is also circular because the general contour of the core of the bowl cover molding pulp mold is circular; of course, the accommodating groove 3 may be square, and the shape of the accommodating groove can be matched with the shape of the corresponding part 1 to be processed; in addition, the accommodating groove 3 has a certain groove depth, and the supporting unit 4 is disposed along the sidewall of the accommodating groove 3, and the supporting unit 4 has a substantially annular contour.

In the specific use, because the fixture body 2 is provided with the accommodating groove 3, the position of the accommodating groove 3 is fixed, the central position of the accommodating groove 3 can be determined in advance, and when the part 1 to be processed is placed in the accommodating groove 3, the central position of the part 1 to be processed is also determined accordingly, so that secondary surface marking and centering are not needed, and the problem of low efficiency caused by the fact that the surface leveling and centering rod centering are needed after the three-jaw chuck is used for fixing in the traditional mode is solved.

In addition, in this embodiment, since the supporting unit 4 is disposed on the side wall of the accommodating groove 3, the part 1 to be processed can be lapped on the supporting unit 4, so that a gap is formed between the part 1 to be processed and the bottom of the accommodating groove 3, that is, the bottom of the circumference of the part 1 to be processed is supported, so that the conventional suspension processing is not needed, the part is prevented from being easily loosened or flying during drilling, and the quality and safety are improved.

In a specific embodiment, the supporting unit 4 is a step disposed on a sidewall of the accommodating groove 3. As shown in fig. 1, the edge of the part to be processed 1 is just overlapped on the step when the part to be processed 1 is placed in the accommodating groove 3 by extending along the side wall of the accommodating groove 3 towards the center direction of the accommodating groove 3 to form a circle of steps; it should be noted that the step has a certain thickness or the step does not contact the bottom of the accommodating groove 3, so that when the part 1 to be machined is overlapped on the surface of the step, a gap is provided between it and the bottom of the accommodating groove 3; that is, the step is arranged in such a way that the part 1 to be processed adopts a peripheral support and a middle suspension manner, as shown in fig. 6, the traditional suspension processing manner is abandoned in the peripheral support manner, so that the part is prevented from being easily loosened or flying during drilling, the quality and the safety are improved, and the middle suspension manner is convenient for processing the hole on the part 1 to be processed.

In a specific embodiment, the side wall of the accommodating groove 3 is further provided with a picking unit 5. In the processing process, inferior products can appear sometimes, rework is needed, and the traditional clamp is troublesome in picking up a piece, the embodiment increases the picking up unit 5, the part 1 to be processed can be conveniently and rapidly picked up, and more possibilities are provided for subsequent batch production.

In a specific embodiment, the pick-up unit 5 is a notch provided on a side wall of the accommodating groove 3, and the notch extends to the surface of the clamp body 2; the notch is provided with a positioning block.

More specifically, on the side wall of the accommodation groove 3, there is a circle of steps along which a notch is provided in a direction away from the center of the accommodation groove 3, the notch extending to the surface of the jig body 2; in this way, when the part 1 to be machined is placed in the accommodation groove 3, a notch is provided at the periphery of the part 1 to be machined, through which the part 1 to be machined can be directly taken out.

In addition, in order to smoothly take out the part 1 to be processed, two pick-up units 5 are provided, which are uniformly distributed on both sides of the part 1 to be processed.

In a specific embodiment, the fixture body 2 includes a horizontally arranged mounting surface 21, and the accommodating groove 3 is formed on the mounting surface 21; the lower end of the mounting surface 21 is provided with a supporting foot 22 for fixed connection with a machine tool. More specifically, the mounting surface 21 is a plate-like structure, and the surface thereof has the accommodation groove 3; at the lower end of the mounting surface 21, a support leg 22 is extended, and the jig provided in this embodiment can be fixedly connected to a machine tool through the support leg 22.

In a specific embodiment, two supporting legs 22 are provided, and the two supporting legs 22 are respectively located at two sides of the lower end of the mounting surface 21; the supporting leg 22 is a quadrilateral structure, and one side of the quadrilateral structure is provided with a mounting groove 23 for connecting and fixing with a machine tool.

More specifically, the supporting leg 22 is formed by connecting a first edge, a second edge, a third edge and a fourth edge end to end, wherein the first edge is parallel to the third edge, the second edge is parallel to the fourth edge, the first edge is closely attached to the lower surface of the mounting surface 21, and the third edge is provided with a mounting groove 23; in addition, after the first edge, the second edge, the third edge and the fourth edge are connected end to end, the middle part of the supporting leg 22 is a hollow structure, and the hollow structure provides a space for operation, so that the fixture of the embodiment is conveniently and fixedly connected with a machine tool through the mounting groove 23. Wherein the mounting groove 23 is an elliptical groove.

In a specific embodiment, in order to avoid that the machining is affected by shaking when the hole is machined in the part to be machined 1, the fixture further comprises a fixing unit 6, which is located on the fixture body 2 and is arranged around the periphery of the accommodating groove 3, and is used for pressing the part to be machined 1 in the accommodating groove 3.

In a specific embodiment, the fixing unit 6 includes at least two fixing blocks 61, and one end of the fixing block 61 near the accommodating groove 3 has a limiting step.

More specifically, four fixing blocks 61 are provided, the adjacent fixing blocks 61 are spaced by 90 °, after the part 1 to be processed is placed in the accommodating groove 3, the four fixing blocks 61 are locked, and note that each fixing block 61 can only press 2mm of the part 1 to be processed, in order to achieve this function, a limiting step is provided at one end of the fixing block 61 near the accommodating groove 3, and the depth of the limiting step is 2mm, so as to give way to the position of the processed sealing ring.

In a specific embodiment, a cylinder is connected to the lower end of each fixing block 61, and the cylinder drives the fixing blocks 61 to move up and down, so as to achieve loosening and tightening of the fixing blocks.

In a specific embodiment, the part to be processed 1 is a core of a bowl cover molding pulp mold, and of course, the part to be processed 1 can be other models.

The specific using method of the clamp provided by the embodiment comprises the following steps:

mounting a clamp; cleaning the clamp body 2, checking whether burrs exist at the bottom of the clamp body 2, and polishing the bottom of the clamp body with oilstone if the burrs exist; after cleaning, placing the clamp at a proper position of a workbench, fixing the clamp body 2 on a table top of a machine tool through two mounting grooves 23 mounting holes on a supporting leg 22 by using m12 screws, correcting the clamp, and controlling the parallelism and the flatness to be within a range of 0.01 mm;

presetting processing coordinates; in four sides of the inner circle positioned by the clamp, the opposite vertex is Z0;

clamping a product; after the two previous steps of preparation work are completed, a core semi-finished product (to-be-processed part 1) of the bowl cover molding pulp mould is placed into the accommodating groove 3, the outer circle of the core is matched with the accommodating groove 3, the single side of a clearance is 0.01mm, four fixing blocks 61 are locked, and each pressing block can only press 2mm to give out the position of a processing sealing ring;

processing products; after the working inspection is correct, the working procedure can be started to process the sealing groove, 132 phi 2.5 small exhaust holes, an exhaust net and a positioning edge;

the tool avoidance problem of the processing position is fully considered in the design of the fixture, the fixture is provided with the serial program, one key start and quick processing of parts can be realized, after the processing of the parts is finished, the four fixing blocks 61 are loosened, the workpiece can be quickly taken out through the workpiece taking unit 5, the first workpiece is required to be processed after the processing of the first workpiece, the batch production can be realized after the inspection is qualified, and the follow-up normal production only needs to be checked. Through actual production verification, the fixture is designed to simplify the operation without the operations of calibrating, separating, aligning and the like for subsequent workpieces, and the mass production can realize quick switching, quick production and stable processing quality.

In summary, it is easily understood by those skilled in the art that the above-mentioned advantageous features can be freely combined and overlapped without conflict.

The above is only a preferred embodiment of the present utility model, and the present utility model is not limited in any way, and any simple modification, equivalent variation and modification made to the above embodiment according to the technical substance of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (10)

1. The fixture is used for fixing a part to be machined and is characterized by comprising a fixture body, wherein the fixture body is provided with a containing groove, the side wall of the containing groove is provided with a supporting unit, the part to be machined can be placed in the containing groove, and the supporting unit is lapped with the supporting unit so that a gap is reserved between the part to be machined and the bottom of the containing groove.

2. The jig according to claim 1, wherein the supporting unit is a step provided on a side wall of the accommodating groove.

3. The fixture of claim 2, wherein the receiving slot further comprises a pick-up unit on a side wall thereof.

4. A clamp according to claim 3, wherein the pick-up unit is a notch provided on a side wall of the receiving slot, the notch extending to a surface of the clamp body; the notch is provided with a positioning block.

5. The fixture of any one of claims 1-4, wherein the fixture body comprises a horizontally disposed mounting surface, the receiving slot opening on the mounting surface; the lower extreme of installation face is provided with the supporting legs that is used for with lathe fixed connection.

6. The fixture of claim 5, wherein two of said support legs are provided, said two support legs being located on opposite sides of a lower end of said mounting surface; the supporting legs are of quadrilateral structures, and one side of each quadrilateral structure is provided with a mounting groove which is fixedly connected with the machine tool.

7. The fixture of any one of claims 1-4, further comprising a securing unit located on the fixture body and disposed about a periphery of the receiving slot for compressing a part to be machined within the receiving slot.

8. The fixture of claim 7, wherein the fixing unit comprises at least two fixing blocks, and one end of the fixing block, which is close to the accommodating groove, is provided with a limiting step.

9. The clamp of claim 8, wherein a cylinder is connected to the lower end of each of the fixing blocks, and the cylinder drives the fixing blocks to move up and down to release and tighten the fixing blocks.

10. A clamp according to any one of claims 1-4, characterized in that the part to be machined is a core of a bowl cover forming pulp mould.

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