U-shaped workpiece positioning jig

Abstract

The utility model relates to the technical field of positioning jigs, in particular to a U-shaped workpiece positioning jig which comprises a base, two limiting devices are fixedly installed in the middle of the upper end of the base, the two limiting devices are installed on the base in a bilateral symmetry mode, and two limiting frame plates are arranged at the upper end of the base. The two limiting frame plates are installed on the base in a bilateral symmetry mode, the limiting frame plates are arranged at the upper end of the limiting device, and the two U-shaped workpieces are arranged at the upper ends of the limiting frame plates in a clamped mode. When the device is used, the two rotary telescopic air cylinders are controlled to rotate and contract through an external control machine, so that the circular pressing plate is in contact with the side end of the U-shaped workpiece, and at the moment, the pressure sensor is used for monitoring the pressure borne by the U-shaped workpiece from the circular pressing plate; therefore, the situation that the limiting pressure applied by the rotary telescopic air cylinder exceeds the bearing range of the U-shaped workpiece, deformation is caused, then positioning accuracy of the U-shaped workpiece is affected, and the machining inferior product rate is increased is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning jig technical field especially relates to a kind of U-shaped workpiece positioning jig. BACKGROUND

[0002] With the development of mechanical manufacturing, non-standard parts in manufacturing industry gradually increase, and the workpiece of standard angle in mechanical processing cannot meet the demand on market, and the most difficult workpiece to process in non-standard parts is U-shaped workpiece, since U-shaped workpiece is mostly made by pouring, so it is extremely important to ensure the positioning of U-shaped workpiece in subsequent processing process, so as to accurately process U-shaped workpiece, and also ensure that U-shaped workpiece is not deformed due to interference limit cooperation in processing process. SUMMARY

[0003] The skilled person provides a kind of U-shaped workpiece positioning jig to solve the problems in the above background.

[0004] To solve the above technical problems, the utility model provides a kind of U-shaped workpiece positioning jig, including base, the upper end middle part of base is fixedly installed with two limit devices, two limit devices are symmetrically installed on base, the upper end of base is provided with two limit frame plates, two limit frame plates are symmetrically installed on base, and limit frame plate is arranged at the upper end of limit device, the upper end of limit frame plate is clamped and arranged with two U-shaped workpieces;

[0005] The base includes thickened bottom plate, limit sliding slot, partition block, first pressing groove and second pressing groove, the left and right ends of the thickened bottom plate are both provided with upwardly-opening limit sliding slots, and the partition block is fixedly installed in the middle part of the groove wall of the limit sliding slot.

[0006] The limit device includes rotary telescopic cylinder, fixed plate, circular pressing plate and pressure sensor, the upper side of the thickened bottom plate is provided with two rotary telescopic cylinders, the two rotary telescopic cylinders are both fixedly installed on the thickened bottom plate through the two fixed plates arranged at the bottom, the telescopic cylinder head of the rotary telescopic cylinder is fixedly installed with the circular pressing plate, and the pressure sensor is symmetrically installed on the front and back sides of the end face of the circular pressing plate close to the rotary telescopic cylinder, the pressure sensor is used to monitor the pressure of U-shaped workpiece from the circular pressing plate, so as to prevent the deformation caused by the limit pressure of the rotary telescopic cylinder exceeding the bearing range of U-shaped workpiece, thereby affecting the positioning accuracy of U-shaped workpiece and causing the increase of processing defective rate.

[0007] In a preferred embodiment: the partition block separates the limit sliding slot into two slots, and the two slots are used to limit the sliding of the end of U-shaped workpiece, to prevent the front and back sliding of U-shaped workpiece.

[0008] In a preferred embodiment: the middle part of the left and right end faces of the thickened bottom plate is provided with a first pressing groove, and the lower part of the middle part of the left and right end faces of the thickened bottom plate is provided with a second pressing groove, and the first pressing groove and the second pressing groove are arranged in a stepped manner, so that the first pressing groove and the second pressing groove limit and insert the end of the U-shaped workpiece.

[0009] In a preferred embodiment: the limiting frame plate comprises a stand plate, a workpiece bayonet and a cylinder mounting port, and the upper end of the stand plate is provided with two concave workpiece bayonets, so that the U-shaped workpiece can be inserted through the workpiece bayonet to prevent the U-shaped workpiece from slipping forward and backward during positioning.

[0010] In a preferred embodiment: the middle part of the lower end of the stand plate is provided with a cylinder mounting port, and the cylinder mounting port is correspondingly arranged with the fixed plate, and the thickened bottom plate is limited through the cylinder mounting port at the lower end of the stand plate, so as to reduce the deviation and vibration during the working process of the rotary telescopic cylinder, and prevent the positioning accuracy of the U-shaped workpiece from being affected.

[0011] In a preferred embodiment: the rotation angle of the two pressure sensors is controlled by the internal unit of the rotary telescopic cylinder, so that the pressure sensor can be in contact with the U-shaped workpiece at any time.

[0012] In summary, the utility model has the following beneficial effects:

[0013] 1. When the utility model is used, the U-shaped workpiece is limited and clamped through the workpiece bayonet at the upper end of the stand plate, and the two ends of the U-shaped workpiece are limited and inserted through the limiting sliding groove, until the end face of the U-shaped workpiece is in contact with the first pressing groove and the second pressing groove, so as to reduce the shaking of the U-shaped workpiece during processing, and prevent the U-shaped workpiece from slipping forward and backward during positioning.

[0014] 2. When the utility model is used, the two rotary telescopic cylinders are controlled to rotate and contract through the external control machine, so that the circular pressing plate is in contact with the side end of the U-shaped workpiece, and at this time, the pressure sensor is used to monitor the pressure of the U-shaped workpiece from the circular pressing plate, so as to prevent the limiting pressure of the rotary telescopic cylinder from exceeding the bearing range of the U-shaped workpiece and causing deformation, and further affect the positioning accuracy of the U-shaped workpiece, and cause the processing of inferior products to increase. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram provided by the application;

[0016] Figure 2 It is a structural schematic diagram of the base provided by the application;

[0017] Figure 3 It is a structural schematic diagram of the limiting device provided by the application;

[0018] In the figure: 1, base; 2, limiting frame plate; 3, limiting device; 4, U-shaped workpiece;

[0019] 11, thickened bottom plate; 12, limiting sliding slot opening; 13, partition block; 14, first pressing groove; 15, second pressing groove;

[0020] 21, stand plate; 22, workpiece clamping opening; 23, cylinder mounting opening;

[0021] 31, rotary telescopic cylinder; 32, fixed plate; 33, round pressing plate; 34, pressure sensor. DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below in combination with the drawings.

[0023] Wherein, same parts are indicated by same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the specific parts geometry. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified. Figure 1

[0024] Example 1:

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms "up", "down", "inner", "outer", "top / bottom end" 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 present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0027] ​In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation" "is provided with" "suits / connects" "connection" and the like, should do broad sense understanding, for example "connection", can be wall hanging connection, also can be detachable connection, or integrally connects, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements, for the ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0028] Please refer to Figures 1 to 3 In the embodiment, a U-shaped workpiece positioning jig is provided, comprising a base 1, two limiting devices 3 are fixedly installed on the upper end of the base 1, the two limiting devices 3 are symmetrically installed on the base 1, two limiting frame plates 2 are arranged on the upper end of the base 1, the two limiting frame plates 2 are symmetrically installed on the base 1, and the limiting frame plate 2 is arranged on the upper end of the limiting device 3, and two U-shaped workpieces 4 are clamped and arranged on the upper end of the limiting frame plate 2;

[0029] The base 1 comprises a thickened bottom plate 11, a limiting sliding groove 12, a partition block 13, a first pressing groove 14 and a second pressing groove 15, the limiting sliding groove 12 with an upward opening is arranged at the left and right ends of the thickened bottom plate 11, the partition block 13 is fixedly installed in the middle of the groove wall of the limiting sliding groove 12, the limiting sliding groove 12 is divided into two groove openings by the partition block 13, the two groove openings are used for limiting the sliding of the end of the U-shaped workpiece 4, and the front and rear sliding of the U-shaped workpiece 4 is prevented, the first pressing groove 14 is arranged in the middle of the left and right end faces of the thickened bottom plate 11, the second pressing groove 15 is arranged in the lower part of the middle of the left and right end faces of the thickened bottom plate 11, and the first pressing groove 14 and the second pressing groove 15 are arranged in a stepped manner, so that the first pressing groove 14 and the second pressing groove 15 limit and insert the end of the U-shaped workpiece 4;

[0030] The limiting frame plate 2 comprises a stand plate 21, a workpiece clamping hole 22 and a cylinder mounting hole 23, the two recessed workpiece clamping holes 22 are arranged at the upper end of the stand plate 21, so that the U-shaped workpiece 4 can be inserted through the workpiece clamping hole 22, the front and rear sliding of the U-shaped workpiece 4 during positioning is prevented, the cylinder mounting hole 23 is arranged in the middle of the lower end of the stand plate 21, the cylinder mounting hole 23 is correspondingly arranged with the fixed plate 32, the lower end of the stand plate 21 is limited through the cylinder mounting hole 23 and the thickened bottom plate 11, the deviation vibration in the working process of the rotary telescopic cylinder 31 is reduced, and the positioning accuracy of the U-shaped workpiece 4 is prevented from being affected;

[0031] The limiting device 3 comprises a rotary telescopic cylinder 31, a fixed plate 32, a circular pressing plate 33 and a pressure sensor 34, the upper side of the thickened bottom plate 11 is provided with two rotary telescopic cylinders 31, the two rotary telescopic cylinders 31 are fixedly installed on the thickened bottom plate 11 through two fixed plates 32 arranged at the bottom, the telescopic cylinder head of the rotary telescopic cylinder 31 is fixedly installed with the circular pressing plate 33, the circular pressing plate 33 is symmetrically provided with the pressure sensor 34 on the front and back sides of the end face of one end of the rotary telescopic cylinder 31, the rotation angle of the two pressure sensors 34 is controlled by the internal unit of the rotary telescopic cylinder 31, so that the pressure sensor 34 can be in contact with the U-shaped workpiece 4 at any time, the pressure sensor 34 is used for monitoring the pressure of the U-shaped workpiece 4 from the circular pressing plate 33, so that the limiting pressure of the rotary telescopic cylinder 31 does not exceed the bearing range of the U-shaped workpiece 4, deformation is prevented, and the positioning accuracy of the U-shaped workpiece 4 is further affected, and the processing defective product rate is increased.

[0032] The working principle of the utility model is:

[0033] In use, the U-shaped workpiece 4 is clamped and positioned by the workpiece clamp 22 on the upper end of the stand plate 21, and the two ends of the U-shaped workpiece 4 are inserted and positioned in the limiting sliding groove 12, until the end faces of the U-shaped workpiece 4 are in contact with the first pressing groove 14 and the second pressing groove 15, so that the U-shaped workpiece 4 is prevented from shaking during processing, and the U-shaped workpiece 4 is prevented from slipping forward and backward during positioning, then the two rotary telescopic cylinders 31 are controlled and contracted by the external control machine, so that the circular pressing plate 33 is in contact with the side end of the U-shaped workpiece 4, at this time, the pressure sensor 34 is used for monitoring the pressure of the U-shaped workpiece 4 from the circular pressing plate 33, so that the limiting pressure of the rotary telescopic cylinder 31 does not exceed the bearing range of the U-shaped workpiece 4, deformation is prevented, and the positioning accuracy of the U-shaped workpiece 4 is further affected, and the processing defective product rate is increased.

[0034] The above is only a preferred specific embodiment of the utility model, but the design concept of the utility model is not limited to this, any skilled person in the art can make non-essential changes to the utility model within the technical range disclosed by the utility model, and such changes also belong to the act of infringing the protection range of the utility model.

Claims

1. A U-shaped workpiece positioning jig comprising a base (1), characterized in that, The upper middle part of the base (1) is fixedly provided with two limiting devices (3), the two limiting devices (3) are symmetrically arranged on the base (1), the upper end of the base (1) is provided with two limiting frame plates (2), the two limiting frame plates (2) are symmetrically arranged on the base (1), and the limiting frame plate (2) is arranged at the upper end of the limiting device (3), and the upper end of the limiting frame plate (2) is clamped and arranged with two U-shaped workpieces (4). The base (1) comprises a thickened bottom plate (11), a limiting sliding slot (12), a partition block (13), a first pressing groove (14) and a second pressing groove (15), the left and right ends of the thickened bottom plate (11) are both provided with an upwardly-opening limiting sliding slot (12), and the slot wall of the limiting sliding slot (12) is fixedly provided with a partition block (13) in the middle part. The limiting device (3) comprises a rotary telescopic cylinder (31), a fixed plate (32), a circular pressing plate (33) and a pressure sensor (34), the upper side of the thickened bottom plate (11) is provided with two rotary telescopic cylinders (31), the two rotary telescopic cylinders (31) are both fixedly arranged on the thickened bottom plate (11) through two fixed plates (32) arranged at the bottom, the telescopic cylinder head of the rotary telescopic cylinder (31) is fixedly provided with a circular pressing plate (33), and the front and back sides of the end face of the circular pressing plate (33) are symmetrically provided with pressure sensors (34) on one end of the circular pressing plate (33) close to the rotary telescopic cylinder (31).

2. The U-shaped workpiece positioning fixture of claim 1, wherein, The partition block (13) divides the limiting sliding slot (12) into two slot openings, and the two slot openings on the two sides of the partition block (13) correspond to the end head of the U-shaped workpiece (4) for limiting sliding.

3. The U-shaped workpiece positioning fixture of claim 1, wherein, The middle part of the left and right end faces of the thickened bottom plate (11) is provided with a first pressing groove (14), and the lower part of the middle part of the left and right end faces of the thickened bottom plate (11) is provided with a second pressing groove (15), and the first pressing groove (14) and the second pressing groove (15) are arranged in a stepped manner.

4. The U-shaped workpiece positioning fixture of claim 1, wherein, The limiting frame plate (2) comprises a vertical frame plate (21), a workpiece clamping opening (22) and a cylinder mounting opening (23), the upper end of the vertical frame plate (21) is provided with two concave workpiece clamping openings (22), and the U-shaped workpiece (4) is inserted into the workpiece clamping opening (22).

5. The U-shaped workpiece positioning fixture of claim 4, wherein, The lower middle part of the vertical frame plate (21) is provided with a cylinder mounting opening (23), and the cylinder mounting opening (23) is correspondingly arranged with the fixed plate (32).

6. The U-shaped workpiece positioning fixture of claim 1, wherein, The rotation angle of the two pressure sensors (34) is controlled by the internal unit of the rotary telescopic cylinder (31), and the pressure sensor (34) can be in contact with the U-shaped workpiece (4) at any time.

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