Zero-point positioning structure of clamp for drilling and boring large and small holes

Abstract

The utility model relates to a drilling and boring large and small hole clamp zero point positioning structure which comprises a supporting base, at least two vertical plates are arranged on the supporting base at intervals, and a plurality of positioning pieces are arranged at the top ends of the vertical plates in a protruding mode. The clamp plate is installed on the vertical plate, a positioning hole is formed in the position, corresponding to the positioning piece, of the clamp plate, and the positioning piece is movably connected with the positioning hole in an inserted mode and penetrates through the upper surface of the clamp plate; on one hand, the determination mode of the zero point is optimized, the mounting and positioning efficiency of the clamp plate is improved, and the machining procedure of the connecting rod is simplified; on the other hand, the time for repeatedly replacing, mounting and positioning the clamp plate in the machining process is saved, and the working efficiency is improved; in addition, the positioning piece penetrates through the upper surface of the clamp plate, so that scrap iron generated in the machining process of the connecting rod is effectively prevented from falling into the positioning hole, and the risk that the clamp plate is stuck in the mounting and positioning process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture positioning, in particular to a zero-point positioning structure of a fixture for drilling and boring large and small holes. Background Art

[0002] In the field of mechanical industry, we refer to the reference as zero point or zero position. When processing or measuring, the zero point of the workpiece must be determined first, and then the processing or measurement is carried out based on the zero point. However, during processing, the parts often do not remain stationary. They need to be moved from one process to another, from one machine tool to another, and it is difficult to determine the zero point of irregularly shaped parts. This requires re-drag the table to find the zero point and do a lot of auxiliary work, resulting in a lot of downtime and reduced work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect of complicated clamping and positioning steps of the fixture plate in the processing of the connecting rod in the prior art, thereby providing a zero-point positioning structure of the fixture for drilling and boring large and small holes.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A zero-point positioning structure for a fixture for drilling and boring large and small holes, comprising:

[0006] A support base, wherein at least two vertical plates are arranged on the support base at intervals, and a plurality of positioning members are protruded from the top ends of the vertical plates;

[0007] A fixture plate is installed on the vertical plate, and a positioning hole is provided on the fixture plate corresponding to the position of the positioning piece. The positioning piece is movably plugged into the positioning hole and penetrates to the upper surface of the fixture plate.

[0008] Preferably, the positioning member comprises a first positioning column and a second positioning column, one end of the second positioning column is fixedly connected to the vertical plate, and the other end of the second positioning column is fixedly connected to the first positioning column;

[0009] When the fixture plate is connected to the vertical plate, the first positioning column passes through the positioning hole and is exposed on the upper surface of the fixture plate.

[0010] Preferably, the diameter of the cross section of the second positioning column is smaller than or equal to the diameter of the positioning hole.

[0011] Preferably, the first positioning column comprises a conical column,

[0012] The conical column has a first end surface and a second end surface, the cross-sectional area of ​​the first end surface is smaller than that of the second end surface,

[0013] The first end surface is disposed toward the fixture plate.

[0014] The second end surface is disposed toward the second positioning post and is fixedly connected to the second positioning post.

[0015] Preferably, the taper of the conical column is 10°.

[0016] Preferably, the top of the vertical plate is also provided with a plurality of T-shaped fixing grooves, and the fixture plate is provided with fixing holes corresponding to the positions of the T-shaped fixing grooves.

[0017] It also includes a T-shaped piece and a fastener, wherein the T-shaped piece is arranged in the T-shaped fixing groove, and the fastener is connected to the T-shaped piece through the fixing hole.

[0018] Preferably, the support base is further provided with a plurality of support columns, and the height of the support columns in the vertical direction is equal to the height of the vertical board;

[0019] One end of the support column is fixedly connected to the support base, and the other end is abutted against a side of the fixture plate facing the support base.

[0020] Preferably, the fixture plate is further provided with a plurality of lifting rings, and the lifting rings are detachably connected to the upper surface of the fixture plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The above technical solution provides a zero-point positioning structure for a fixture for drilling and boring large and small holes, in which at least two vertical plates are spaced apart on a supporting base, and a plurality of positioning members are protruding from the upper ends of the vertical plates. Correspondingly, positioning holes are opened at positions of the fixture plates corresponding to the positioning members, so that when the fixture plate and the vertical plate are positioned and installed, the positioning members can be movably plugged into the positioning holes and penetrate through the upper surface of the fixture plate; on the one hand, the method for determining the zero point is optimized, which not only improves the efficiency of the installation and positioning of the fixture plate, but also simplifies the processing procedure of the connecting rod; on the other hand, the time for repeated replacement and installation and positioning of the fixture plate during the processing is saved, thereby improving work efficiency; in addition, the positioning members penetrate through the upper surface of the fixture plate, which effectively prevents iron filings generated by the connecting rod during the processing from falling into the positioning holes, thereby reducing the risk of the fixture plate being stuck during the installation and positioning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The figure is a schematic diagram of the overall structure of a zero-point positioning structure provided in one embodiment of the utility model.

[0025] Figure 2 for Figure 1 The schematic diagram of the positioning piece structure is shown.

[0026] Description of reference numerals:

[0027] 1. Support base; 11. Vertical plate; 12. Positioning piece; 121. First positioning column; 122. Second positioning column; 13. T-shaped fixing groove; 2. Fixing plate; 21. Positioning hole; 22. Fixing hole; 3. Support column; 4. Lifting ring. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model provides a zero-point positioning structure for a fixture for drilling and boring large and small holes, such as Figure 1 and Figure 2As shown, it includes: a support base 1, the support base 1 is used to cooperate with an operating table connected to the processing equipment, and at least two vertical plates 11 are spaced apart on the support base 1, the vertical plates 11 are used to install a fixture that carries and clamps the connecting rod; specifically, a plurality of positioning members 12 are protruding from the top of the vertical plate 11, and the positioning members 12 are used to assist in the assembly and positioning of the fixture; a fixture plate 2 is used to install and arrange a fixture for clamping the connecting rod, the fixture plate 2 is installed on the vertical plate 11, and the fixture plate 2 has positioning holes 21 at positions corresponding to the positioning members 12, and then when the fixture plate 2 and the vertical plate 11 are installed and positioned, the positioning members 12 on the vertical plate 11 are movably plugged into the positioning holes 21 and penetrate to the upper surface of the fixture plate 2 to prevent iron filings generated during the processing of the connecting rod from falling into the positioning holes 21.

[0032] At least two vertical plates 11 are arranged at intervals on the supporting base 1, and a plurality of positioning members 12 are protruding from the upper ends of the vertical plates 11. Correspondingly, positioning holes 21 are opened at positions of the fixture plate 2 corresponding to the positioning members 12, so that when the fixture plate 2 and the vertical plate 11 are positioned and installed, the positioning members 12 can be movably plugged into the positioning holes 21 and penetrate through the upper surface of the fixture plate 2; on the one hand, the method for determining the zero point is optimized, which not only improves the efficiency of the installation and positioning of the fixture plate 2, but also simplifies the processing procedure of the connecting rod; on the other hand, the time for repeated replacement and installation and positioning of the fixture plate 2 during the processing is saved, thereby improving work efficiency; in addition, the positioning members 12 penetrate through the upper surface of the fixture plate 2, which effectively prevents iron filings generated by the connecting rod during the processing from falling into the positioning holes 21, thereby reducing the risk of the fixture plate 2 being stuck during the installation and positioning process.

[0033] Specifically, the positioning member 12 includes a first positioning column 121 and a second positioning column 122. To facilitate processing and manufacturing, the first positioning column 121 and the second positioning column 122 are usually an integrated structure; and one end of the second positioning column 122 is fixedly connected to the vertical plate 11, and the other end is fixedly connected to the first positioning column 121; when the clamp plate 2 is connected to the vertical plate 11, the first positioning column 121 passes through the positioning hole 21 and is exposed on the upper surface of the clamp plate 2.

[0034] Specifically, in order to ensure that the positioning connection between the fixture plate 2 and the vertical plate 11 is smoother, the diameter of the cross section of the second positioning column 122 is set to be less than or equal to the diameter of the positioning hole 21 to avoid jamming when the fixture plate 2 and the vertical plate 11 are positioned and assembled; preferably, the outer wall of the second positioning column 122 and the inner wall of the positioning hole 21 are clearance-matched, which can better avoid the positioning piece 12 and the positioning hole 21 from being affected by iron filings generated during the matching process, and on the other hand, based on the clearance match between the second positioning column 122 and the positioning hole 21, it can ensure that the second positioning column The effective contact area between 122 and the positioning hole 21 avoids the wear problem caused by repeated replacement and adjustment of the fixture plate 2 to the machine tool; and based on actual experience, the present application sets the diameter of the cross section of the second positioning column 122 to 25mm, and the tolerance of the second positioning column 122 to h6, the diameter of the positioning hole 21 is set to 25mm, and the tolerance of the positioning hole 21 is set to H7; wherein, the tolerance matching relationship between the second positioning column 122 and the positioning hole 21 is H7 / h6, that is, the maximum clearance is 0.049, and the minimum clearance is 0.000.

[0035] Preferably, in order to enable the positioning hole 21 on the fixture plate 2 and the positioning piece 12 protruding from the vertical plate 11 to be quickly positioned and installed, the first positioning column 121 of the positioning piece 12 includes a conical column, and the conical column has a first end face and a second end face, and the cross-sectional area of ​​the first end face is smaller than that of the second end face; further, the first end face of the conical column is arranged toward the fixture plate 2, so that when the fixture plate 2 and the vertical plate 11 are installed in coordination, the positioning piece 12 can be accurately inserted into the positioning hole 21, thereby reducing the time for locating the positioning column and the positioning hole 21, and further saving the clamping time of the fixture plate 2 when the machine tool is replaced for process adjustment; and the second end face is arranged toward the second positioning column 122, and is fixedly connected to the second positioning column 122; so that when the conical column is inserted into the positioning hole 21, the second positioning column 122 can naturally complete the clamping and positioning between the fixture plate 2 and the vertical plate 11.

[0036] Preferably, in order to facilitate the connection and cooperation between the conical column and the positioning hole 21, the taper of the conical column is set to 10° in the present application.

[0037] Specifically, in order to make the clamping and positioning of the clamp plate 2 and the vertical plate 11 more stable, a plurality of T-shaped fixing grooves 13 are provided at the top of the vertical plate 11, and the clamp plate 2 is provided with fixing holes 22 at the positions corresponding to the T-shaped fixing grooves 13; and the positioning structure also includes a T-shaped piece and a fastener; then, the T-shaped piece is arranged in the T-shaped fixing groove 13, and the fastener is connected to the T-shaped piece through the fixing hole 22, so that the clamp plate 2 and the vertical plate 11 are connected and fixed; thereby avoiding vibration or loosening of the clamp plate 2 and the vertical plate 11 due to the operation of the equipment during the processing, thereby affecting the processing accuracy of the connecting rod.

[0038] Furthermore, in order to provide a stable support for the fixture plate 2, a plurality of support columns 3 are provided on the support base 1, and the height of the support columns 3 in the vertical direction is equal to the height of the vertical plate 11; and one end of the support column 3 is fixedly connected to the support base 1, and the other end abuts against the side of the fixture plate 2 facing the support base 1; specifically, the support column 3 is usually arranged between two adjacent vertical plates 11.

[0039] In addition, in order to facilitate the adjustment of the machine tool for different processing steps when the fixture plate 2 cooperates with the connecting rod processing, a plurality of lifting rings 4 are also provided on the fixture plate 2, so that the staff can lift and transfer the fixture plate 2 and the connecting rod clamped on the fixture plate 2 through auxiliary equipment; and in order to ensure that the fixture plate 2 remains stable during the lifting and transfer process, the lifting rings 4 are symmetrically distributed on the fixture plate 2; as in the present application, four lifting rings 4 are selected, and the four lifting rings 4 are respectively arranged at the four corners of the fixture plate 2; the lifting rings 4 are detachably connected to the upper surface of the fixture plate 2.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A zero point positioning structure for a fixture for drilling and boring large and small holes, characterized in that: include: A support base, wherein at least two vertical plates are arranged on the support base at intervals, and a plurality of positioning members are protruded from the top ends of the vertical plates; A fixture plate is installed on the vertical plate, and a positioning hole is provided on the fixture plate corresponding to the position of the positioning piece. The positioning piece is movably plugged into the positioning hole and penetrates to the upper surface of the fixture plate.

2. The positioning structure according to claim 1, characterized in that: The positioning member includes a first positioning column and a second positioning column, one end of the second positioning column is fixedly connected to the vertical plate, and the other end is fixedly connected to the first positioning column; When the fixture plate is connected to the vertical plate, the first positioning column passes through the positioning hole and is exposed on the upper surface of the fixture plate.

3. The positioning structure according to claim 2, characterized in that: The diameter of the cross section of the second positioning column is smaller than or equal to the diameter of the positioning hole.

4. The positioning structure according to claim 2, characterized in that: The first positioning column comprises a conical column, The conical column has a first end surface and a second end surface, the cross-sectional area of ​​the first end surface is smaller than that of the second end surface, The first end surface is disposed toward the fixture plate. The second end surface is disposed toward the second positioning post and is fixedly connected to the second positioning post.

5. The positioning structure according to claim 4, characterized in that: The taper of the conical column is 10°.

6. The positioning structure according to claim 1, characterized in that: The top of the vertical plate is also provided with a plurality of T-shaped fixing grooves, and the fixture plate is provided with fixing holes corresponding to the positions of the T-shaped fixing grooves. It also includes a T-shaped piece and a fastener, wherein the T-shaped piece is arranged in the T-shaped fixing groove, and the fastener is connected to the T-shaped piece through the fixing hole.

7. The positioning structure according to claim 1, characterized in that: The support base is also provided with a plurality of support columns, and the height of the support columns in the vertical direction is equal to the height of the vertical board; One end of the support column is fixedly connected to the support base, and the other end is abutted against a side of the fixture plate facing the support base.

8. The positioning structure according to claim 1, characterized in that: The fixture plate is also provided with a plurality of hanging rings, which are detachably connected to the upper surface of the fixture plate.

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