CN212705468U

CN212705468U - Clamping fixture

Info

Publication number: CN212705468U
Application number: CN202021268706.3U
Authority: CN
Inventors: 高歌; 张茂盛; 李振华; 黄华昌; 雷鹏; 晏祥兵
Original assignee: CRRC Zhuzhou Vehicle Co Ltd
Current assignee: CRRC Zhuzhou Vehicle Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-16
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a clamping fixture, including ejector pin subassembly, anchor clamps seat, locking Assembly, depression bar and adjustable piece that compresses tightly, anchor clamps seat slidable ground cover is located on the ejector pin subassembly, locking Assembly be used for with anchor clamps seat locks on the user equipment, depression bar one end with ejector pin subassembly sliding connection, the other end are equipped with adjustable piece that compresses tightly, the middle part of depression bar articulate in on the anchor clamps seat, adjustable piece that compresses tightly can keep in with the straight line advance and retreat the tip of depression bar. The clamping fixture has the advantages of simple and small structure, easiness in application, convenience in adjustment and good universality, the defect of repeated replacement is avoided, continuous processing operation on different workpieces is guaranteed, and the clamping fixture is convenient to use and has outstanding production efficiency.

Description

Clamping fixture

Technical Field

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

Background

In the machining operation, a workpiece needs to be clamped by a clamp so as to ensure the smooth operation of the machining process. The existing clamp is complex in structure and large in size, so that the machine is high in manufacturing cost, complex and slow in clamping process, and inaccurate in alignment easily, and a large number of defective products are processed. The existing clamps are mostly special clamps and can only be applied to specific workpieces; when the machined product is changed, the clamp also needs to be correspondingly changed, and the clamp is frequently changed, so that the production efficiency is further reduced, and the labor intensity is further increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a clamping fixture, simple structure is small and exquisite, easily use, and it is convenient, the commonality is good to adjust.

The utility model provides a clamping fixture, including ejector pin subassembly, anchor clamps seat, locking Assembly, depression bar and adjustable piece that compresses tightly, anchor clamps seat slidable ground cover is located on the ejector pin subassembly, locking Assembly be used for with the anchor clamps seat locks on the user equipment, depression bar one end with ejector pin subassembly sliding connection, the other end are equipped with adjustable piece that compresses tightly, the middle part of depression bar articulate in on the anchor clamps seat, adjustable piece that compresses tightly can keep in with straight line advance and retreat the tip of depression bar.

Optionally, the ejector rod assembly comprises a connecting rod, a U-shaped seat and a pin shaft, the U-shaped seat is arranged at the upper end of the connecting rod, the pressing rod is slidably held between the side walls of the two sides of the U-shaped seat, the pin shaft is connected between the side walls of the two sides of the U-shaped seat and penetrates through the pressing rod, and the pressing rod is slidably connected with the pin shaft.

Optionally, the pressing rod has a sliding slot, and the pin shaft penetrates through the sliding slot and is slidably retained in the sliding slot along an extending direction of the sliding slot; the sliding groove is a straight-line-shaped through groove.

Optionally, the clamp seat has a sliding hole penetrating therethrough, and the sliding hole is slidably sleeved on the ejector rod assembly.

Optionally, the anchor clamps seat is including integrated into one piece's slip cap portion, fixed part and two connection ears, slip cap portion is located with sliding on the ejector pin subassembly, the fixed part passes through locking Assembly locks on the user equipment, the middle part of depression bar is inlayed and is located between two connection ears and through the articulated shaft with it is articulated between two connection ears.

Optionally, a containing part is formed between the sliding sleeve part and the fixing part, a pressing part of the locking assembly is arranged in the containing part and presses the fixing part onto the using equipment, and the pressing part is in threaded connection with the using equipment through a threaded fastener.

Optionally, the fixing portion is provided with a through hole, and the threaded fastener sequentially penetrates through the use device and the through hole and then is connected to the pressing and fixing member through threads.

Optionally, the fixing portion and the pressing member are pressed and fixed by a connecting screw.

Optionally, a pressure head is arranged at the end part of the adjustable pressing piece, and the outer diameter of the pressure head is larger than that of the adjustable pressing piece.

Optionally, the adjustable pressing piece is an adjusting screw rod, and the adjusting screw rod is spirally and rotatably held at the end of the pressing rod.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the clamp seat is slidably sleeved on the ejector rod assembly, so that the position of the clamp seat can be quickly adjusted to meet the clamping requirements of workpieces with different thicknesses; the pressing rod is connected with the ejector rod assembly in a sliding manner and is hinged with the clamp seat, so that the positions of the pressing rod and the adjustable pressing piece at the tail end of the pressing rod can be conveniently adjusted, and the pressing action on workpieces of different specifications can be better realized; the adjustable pressing piece can be linearly kept at the end part of the pressing rod in a forward and backward mode, so that accurate position adjustment is further realized, and workpieces with different thicknesses can be clamped; the clamping fixture has the advantages of simple and small structure, easiness in application, convenience in adjustment and good universality, the defect of repeated replacement is avoided, continuous processing operation on different workpieces is guaranteed, and the clamping fixture is convenient to use and has outstanding production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a clamping fixture according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a ram assembly of the clamping fixture of FIG. 1;

FIG. 3 is a schematic view of a clamp base of the clamping fixture of FIG. 1;

FIG. 4 is a schematic view of the locking assembly of the clamping fixture of FIG. 1;

fig. 5 is a schematic structural view of a pressing rod of the clamping jig of fig. 1.

Description of the main element symbols:

1-mandril component, 11-connecting rod, 12-U-shaped seat, 13-pin shaft, 2-clamp seat, 21-sliding sleeve part, 211-sliding hole, 22-fixing part, 221-through hole, 23-connecting lug part, 24-accommodating part, 25-shaft hole, 3-locking component, 31-pressing part, 32-threaded fastener, 33-connecting screw, 4-pressing rod, 41-sliding groove, 42-screw hole, 5-adjustable pressing part and 51-pressing head.

Detailed Description

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, the present embodiment discloses a specific structure of a clamping fixture, which includes a top rod assembly 1, a fixture base 2, a locking assembly 3, a pressing rod 4 and an adjustable pressing member 5, so as to achieve universal clamping of different workpieces with a simplified structure, and the clamping fixture is convenient to use and high in production efficiency.

Wherein, the clamp seat 2 is slidably sleeved on the ejector rod component 1, so that the position of the clamp seat 2 can be quickly adjusted to meet the clamping requirements of workpieces with different thicknesses. Exemplarily, the clamp seat 2 has a sliding hole 211 penetrating therethrough, and the sliding hole 211 is slidably sleeved on the rod assembly 1 to realize a sliding fit.

Wherein, 4 one end of depression bar and ejector pin subassembly 1 sliding connection, the other end are equipped with adjustable and compress tightly piece 5, and the middle part of depression bar 4 articulates on anchor clamps seat 2, realizes adjustable's the action of compressing tightly. Exemplarily, the ram assembly 1 includes a connecting rod 11, a U-shaped seat 12, and a pin 13. The U-shaped seat 12 is arranged at the upper end of the connecting rod 11, the pressure lever 4 is slidably held between the side walls of the two sides of the U-shaped seat 12, the pin shaft 13 is connected between the side walls of the two sides of the U-shaped seat 12 and penetrates through the pressure lever 4, and the pressure lever 4 is slidably connected with the pin shaft 13.

Exemplarily, the pressing rod 4 has a sliding slot 41, and the pin 13 penetrates through the sliding slot 41 and is slidably retained in the sliding slot 41 along an extending direction of the sliding slot 41, so that the pressing rod 4 and the push rod assembly 1 have relative sliding therebetween, thereby realizing position adjustment. The sliding groove 41 is exemplarily a straight through groove.

Illustratively, the clamp base 2 includes an integrally formed slip sleeve portion 21, a fixing portion 22, and two connecting ears 23. Wherein, the sliding sleeve part 21 is slidingly sleeved on the mandril component 1, and the sliding hole 211 is arranged on the sliding sleeve part 21; the fixing part 22 is locked on the using equipment through the locking component 3, so that the clamp seat 2 is kept at the current position, and a positioning basis is provided for machining; the middle part of the pressure lever 4 is embedded between the two connecting lugs 23 and is hinged with the two connecting lugs 23 through a hinge shaft, and the hinge shaft is arranged in the shaft holes 25 of the two connecting lugs 23 in a penetrating way to realize pivoting motion and provide the freedom degree of position adjustment.

Thanks to the relative sliding between the compression bar 4 and the ejector rod assembly 1 and the pivoting motion between the compression bar 4 and the clamp seat 2, the compression bar 4 can realize position adjustment, reliably compress workpieces with different thickness specifications, ensure the universality of different workpieces, avoid the defect of repeated replacement and ensure the continuous processing operation of different workpieces.

Illustratively, a receiving portion 24 is formed between the sliding sleeve portion 21 and the fixing portion 22. The pressing member 31 of the locking assembly 3 is disposed in the receiving portion 24 and presses the fixing portion 22 against the user equipment, and the pressing member 31 and the user equipment are screwed by the screw fastener 32. This configuration makes the overall structure of the clamping fixture more compact on the one hand, and on the other hand effectively ensures the locking reliability of the fixture base 2 on the equipment in use.

Illustratively, the fixing portion 22 is provided with a through hole 221, and the threaded fastener 32 is threaded onto the press-fastening member 31 after passing through the through hole 221 and the use equipment in sequence. The fixing portion 22 and the pressing member 31 are pressed by a connecting screw 33.

Wherein the locking assembly 3 is used for locking the fixture base 2 to the user equipment. Specifically, the locking assembly 3 can be connected and fixed with the using equipment by means of screw connection, pin connection and the like, and presses the fixture seat 2 onto the using equipment. In the aforementioned configuration, the locking assembly 3 exemplarily includes a press-fixing member 31, a threaded fastener 32, and a connection screw 33. On one hand, the pressing member 31 is screwed to the user equipment through the screw fastener 32, and presses the fixing portion 22 of the clamp base 2 against the user equipment; on the other hand, the fastening member 31 is connected and locked to the fixing portion 22 by a connecting screw 33.

The adjustable pressing piece 5 can be linearly kept at the end part of the pressing rod 4 in a forward and backward mode, accurate position adjustment is further achieved, and therefore clamping of workpieces with different thicknesses can be achieved. Exemplarily, the end of the adjustable pressing member 5 is provided with a pressing head 51, and the outer diameter of the pressing head 51 is larger than the outer diameter of the adjustable pressing member 5, so that the pressing area is increased, and the pressing reliability is improved.

The adjustable compression member 5 is illustratively an adjustment screw that is threadably rotatably retained at the end of the compression rod 4. In other words, the end of the pressure lever 4 is provided with a screw hole 42, and the adjustment screw rod is inserted through the screw hole 42 and screwed into the screw hole 42, so that the linear advance and retreat in the axial direction are spirally and rotatably achieved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The clamping fixture is characterized by comprising an ejector rod assembly, a fixture seat, a locking assembly, a pressing rod and an adjustable pressing piece, wherein the fixture seat is slidably sleeved on the ejector rod assembly, the locking assembly is used for locking the fixture seat on use equipment, one end of the pressing rod is slidably connected with the ejector rod assembly, the adjustable pressing piece is arranged at the other end of the pressing rod, the middle part of the pressing rod is hinged on the fixture seat, and the adjustable pressing piece can be linearly kept at the end part of the pressing rod in a forward and backward mode.

2. The clamping fixture of claim 1, wherein said top rod assembly comprises a connecting rod, a U-shaped seat and a pin, said U-shaped seat is disposed at an upper end of said connecting rod, said pressing rod is slidably held between two side walls of said U-shaped seat, said pin is connected between two side walls of said U-shaped seat and penetrates said pressing rod, and said pressing rod is slidably connected with said pin.

3. The clamping fixture of claim 2, wherein said compression bar has a slide slot, said pin shaft extending through said slide slot and slidably retained within said slide slot in a direction of extension of said slide slot; the sliding groove is a straight-line-shaped through groove.

4. The clamping fixture of claim 1, wherein said fixture base has a slide bore therethrough, said slide bore slidably receiving said ram assembly.

5. The clamping fixture according to claim 1, wherein said fixture base comprises a sliding sleeve portion, a fixing portion and two connecting ear portions, said sliding sleeve portion is slidably sleeved on said rod assembly, said fixing portion is locked on the user device by said locking assembly, and said middle portion of said pressing rod is embedded between said two connecting ear portions and hinged to said two connecting ear portions by a hinge shaft.

6. The clamping fixture of claim 5, wherein a receiving portion is formed between said sliding sleeve portion and said fastening portion, a pressing member of said locking assembly is disposed in said receiving portion and presses said fastening portion against said user device, and said pressing member is threadedly coupled to said user device via a threaded fastener.

7. The clamping fixture of claim 6 wherein said holding portion defines a through-hole, said threaded fastener being threaded onto said fastener member after passing through said through-hole and said use device in sequence.

8. The clamping fixture of claim 6, wherein said anchor portion and said fastener are secured together by a connecting screw.

9. The clamping fixture of claim 1, wherein said adjustable hold down member end is provided with a ram having an outer diameter greater than an outer diameter of said adjustable hold down member.

10. The clamping fixture of claim 1, wherein said adjustable hold down member is an adjustment screw that is threadably rotatably retained at an end of said strut.