CN219881853U

CN219881853U - Automatic centering clamping fixture

Info

Publication number: CN219881853U
Application number: CN202321069202.2U
Authority: CN
Inventors: 钟世豪; 郭树宇; 田小平
Original assignee: Dongguan Tiandi Electronic Hardware Industrial Co ltd
Current assignee: Dongguan Tiandi Electronic Hardware Industrial Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-10-24
Anticipated expiration: 2033-05-06

Abstract

The utility model relates to the technical field of CNC finish machining, and discloses an automatic centering clamping fixture which comprises a bottom plate, wherein a through machining port is formed in the bottom plate, and sliding grooves are formed in two sides of the machining port; the two groups of sliding blocks are arranged on the sliding chute in a sliding manner; two groups of jaws are respectively arranged on the sliding blocks one by one; two groups of pressing plates are respectively arranged on the jaws one by one; the two ends of the left and right spiral screw rods are respectively in one-to-one threaded connection with the sliding blocks; the part is clamped between the two groups of jaws and below the two groups of pressing plates. The parts are clamped below the two groups of clamping openings and the pressing plate, and the parts can be subjected to one-time clamping, so that the high-precision machining of the parts with six surfaces and associated form and position tolerance dimensions can be finished, the machining efficiency is improved, and the stability of the machining quality is ensured; the consistency of the part machining reference and the design center reference can be ensured, and the part machining precision is higher; the fixture has good universality and wide applicability, and can be suitable for round parts and square parts.

Description

Automatic centering clamping fixture

Technical Field

The utility model relates to the technical field of CNC finish machining, in particular to an automatic centering clamping fixture.

Background

In CNC finish machining, in the prior art, there is often no way to finish machining of six faces at one time for machining of high-precision parts with associated form and position tolerances of the six faces, so that the parts need to be clamped again for two times or even more times. On one hand, the processing efficiency is low; on the other hand, the processing quality is unstable. In addition, in the prior art, for round or square parts, clamping processing cannot be performed on the same set of clamp.

Disclosure of Invention

Based on the above, the utility model aims at providing the automatic centering clamping fixture, which can finish high-precision machining of six parts with associated form and position tolerance dimensions by one-time clamping, improves the machining efficiency and ensures the stability of the machining quality.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic centering clamping fixture, comprising:

the bottom plate is provided with a through machining port, and sliding grooves are formed in two sides of the machining port;

the two groups of sliding blocks are arranged on the sliding chute in a sliding manner;

two groups of jaws are respectively arranged on the sliding blocks one by one;

two groups of pressing plates are respectively arranged on the jaws one by one;

the two ends of the left and right spiral screw rods are respectively in one-to-one threaded connection with the sliding blocks;

the part is clamped between the two groups of jaws and below the two groups of pressing plates.

Preferably, the jaw is provided with a clamping groove, and the clamping groove is a V-shaped groove.

Preferably, a sliding rod is sleeved between the two groups of sliding blocks.

Preferably, the pressing plate comprises a connecting part and a pressing part, and is L-shaped.

Preferably, one end of the left and right screw rods is provided with a screwing part, and the screwing part penetrates out of the sliding block and is leaked outside the sliding block.

Preferably, a first screw is arranged on one group of the sliding blocks, and the sliding blocks are connected with the sliding rods through the first screw.

Preferably, the jaw is connected with the slider through a second screw.

Preferably, the pressing plate is connected with the jaw through a third screw.

Preferably, the bottom plate is also connected with an index plate connecting plate.

The beneficial effects of the utility model are as follows:

(1) The parts are clamped below the two groups of clamping openings and the pressing plate, and the parts can be subjected to one-time clamping, so that the high-precision machining of the parts with six surfaces and associated form and position tolerance dimensions can be finished, the machining efficiency is improved, and the stability of the machining quality is ensured;

(2) The consistency of the part machining reference and the design center reference can be ensured, and the part machining precision is higher;

(3) The fixture has good universality and wide applicability, and can be suitable for round parts and square parts.

Drawings

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

FIG. 1 is a schematic view of a structure of a self-centering clamping fixture with a part clamped thereon according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a self-centering clamping fixture according to an embodiment of the present utility model.

In the figure:

1. a part; 2. a bottom plate; 21. a processing port; 22. a chute; 3. a slide block; 4. a jaw; 41. a clamping groove; 5. a pressing plate; 51. a connection part; 52. a pressing part; 6. left and right screw rods; 61. a screwing part; 7. a slide bar; 81. a first screw; 82. a second screw; 83. a third screw; 9. and a dividing plate connecting plate.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments 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 fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 and 2, an embodiment of the present utility model provides an automatic centering clamping fixture, which comprises a bottom plate 2, wherein a processing opening 21 is formed in the bottom plate, and sliding grooves 22 are formed in two sides of the processing opening 21; two groups of sliding blocks 3 are arranged on the sliding chute 22 in a sliding manner; two sets of jaws 4, respectively arranged on the sliding blocks 3 one by one, preferably, the jaws 4 are connected with the sliding blocks 3 through second screws 82; two sets of pressing plates 5, respectively arranged on the jaws 4 one by one, preferably, the pressing plates 5 are connected with the jaws 4 through third screws 83; preferably, the pressing plate 5 comprises a connecting part 51 and a pressing part 52, and the pressing plate 5 is L-shaped; the two ends of the left and right spiral screw rods 6 are respectively in one-to-one threaded connection with the sliding blocks 3; the part 1 is clamped between two sets of said jaws 4 and below two sets of said press plates 5. Specifically, in the embodiment of the utility model, when the left and right screw rods 6 are screwed, the two groups of sliding blocks 3 are separated to two sides at the same time or are close to each other at the same time, the part 1 is placed between the two groups of sliding blocks 3, the two groups of sliding blocks 3 move towards each other, so that two sides of the part 1 are clamped between the two jaws 4, and the pressing plate 5 presses the part 1 above the jaws 4 by screwing the third screw 83, so that the clamping of the part 1 is completed. During machining, high-precision machining of the six-face part 1 with the relevant form and position tolerance size can be completed, and machining efficiency is improved. Meanwhile, once clamping is carried out, so that the stability of processing quality is ensured;

referring to fig. 1 and 2, as a preferred mode of the embodiment of the present utility model, the jaw 4 is provided with a clamping groove 41, and the clamping groove 41 is a V-shaped groove. Specifically, in the embodiment of the utility model, the part 1 is clamped between the two V-shaped clamping grooves 41, so that the consistency of the machining reference of the part 1 and the design center reference can be ensured, and the machining precision of the part 1 is higher; meanwhile, the clamp has good universality and wide applicability, and can be used for the circular part 1 and the square part 1.

As a preferred mode of the embodiment of the utility model, a sliding rod 7 is sleeved between the two groups of sliding blocks 3 shown in fig. 1 and 2. Specifically, a first screw 81 is provided on one group of the sliding blocks 3, and the first screw 81 connects the sliding blocks 3 and the sliding rod 7. In the embodiment of the utility model, when the left and right spiral screw rods 6 are screwed, the two groups of sliding blocks 3 slide along the sliding grooves 22 and slide along the sliding rods 7 at the same time, so that the sliding stability of the sliding blocks 3 is maintained.

Referring to fig. 1 and 2, as a preferred mode of the embodiment of the present utility model, in order to facilitate screwing of the left and right screw rods 6, one ends of the left and right screw rods 6 are provided with screwing portions 61, and the screwing portions 61 penetrate the slider 3 and are exposed outside the slider 3.

As shown in fig. 1 and 2, as a preferred mode of the embodiment of the present utility model, for conveniently connecting the CNC dividing head, the base plate 2 is further connected with a dividing plate connecting plate 9, and is connected with the CNC dividing plug through the dividing plate connecting plate 9.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A self-centering clamping fixture, comprising:

two groups of jaws are respectively arranged on the sliding blocks one by one;

two groups of pressing plates are respectively arranged on the jaws one by one;

2. The self-centering clamping fixture as claimed in claim 1, wherein the jaw is provided with a clamping groove, and the clamping groove is a V-shaped groove.

3. The self-centering clamping fixture of claim 1, wherein a slide bar is further sleeved between the two sets of slide blocks.

4. The self-centering clamping fixture of claim 1, wherein the pressure plate comprises a connecting portion and a pressing portion, and the pressure plate is L-shaped.

5. The self-centering clamping fixture according to claim 1, wherein one ends of the left and right screw rods are provided with screwing parts, and the screwing parts penetrate out of the sliding blocks and are leaked to the outer sides of the sliding blocks.

6. A self-centering clamping fixture as claimed in claim 3, wherein a set of said slides are provided with first screws connecting said slides to said slide bar.

7. The self-centering clamp of claim 1, wherein the jaws are coupled to the slide by a second screw.

8. The self-centering clamp of claim 4, wherein said pressure plate is coupled to said jaws by a third screw.

9. A self-centering clamping jig as claimed in any one of claims 1 to 8, wherein the base plate is further connected to an index plate connection plate.