Zero-point positioning tool capable of being rapidly replaced for valve block

Abstract

The utility model provides a zero-point positioning tool capable of being quickly replaced for a valve block, which comprises a positioning base with a plurality of connecting holes, a positioning boss fixedly connected to the positioning base, and a positioning auxiliary plate detachably and fixedly connected to the positioning boss to bear the valve block, and a positioning column and a positioning plate are mounted on the positioning auxiliary plate. According to the zero-point positioning tool capable of being rapidly replaced for the valve block, the positioning base is provided with the connecting hole so that the positioning base can be conveniently connected with a machine tool workbench, the positioning boss is arranged, the detachable positioning auxiliary plate is arranged on the positioning boss, and therefore after the positioning base is straightened and aligned for the first time, the valve block can be rapidly replaced. According to the different positioning auxiliary plates, direct positioning and use can be achieved, independent positioning, straightening and alignment are not needed, the production and machining time is saved, and the positioning columns and the positioning plates are arranged on the positioning auxiliary plates so that a workpiece can be positioned and fixed.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to a zero-point positioning tool which can be quickly replaced for a valve block. Background Art

[0002] In the production process of hydraulic valve blocks, different tooling and fixtures need to be developed to meet the processing requirements of different product styles to implement the processing plan. This process involves a lot of repetitive work such as straightening and alignment, as well as the waste of time in changing different tooling, which seriously affects the production progress and production costs. Utility Model Content

[0003] In view of this, the utility model aims to provide a zero-point positioning tool for a valve block that can be quickly replaced, so as to avoid the deficiency of the prior art that multiple alignments are required and have better use effect.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A quickly replaceable zero-point positioning tool for a valve block comprises a positioning base with a plurality of connecting holes, a positioning boss fixedly connected to the positioning base, and a positioning sub-plate detachably fixedly connected to the positioning boss to accommodate the valve block, and a positioning column and a positioning plate are installed on the positioning sub-plate.

[0006] Furthermore, the positioning boss includes two ribs arranged in a cross shape, and two sub-ribs disposed on both sides of one of the ribs, and a positioning hole is respectively provided at one end of the two sub-ribs, and a positioning portion for positioning the positioning sub-plate is provided in the positioning hole.

[0007] Furthermore, the positioning portion includes a positioning sleeve sleeved in the positioning hole, and a positioning pin inserted in the positioning sleeve.

[0008] Furthermore, on the two rib platforms, a line connecting the two positioning holes locates the center of the boss.

[0009] Furthermore, the positioning plates are two arranged on two opposite sides of the positioning sub-plate.

[0010] Furthermore, a connecting component is provided between the positioning sub-plate and the positioning boss.

[0011] Furthermore, the connecting assembly includes a wire screw sleeve threadedly connected to the positioning boss, and a fastening bolt passing through the positioning sub-plate and threadedly connected to the wire screw sleeve.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] (1) The valve block described in the utility model uses a quickly replaceable zero-point positioning fixture. A connecting hole is provided on the positioning base so that it can be easily connected to the machine tool workbench, and a positioning boss is provided. A detachable positioning sub-plate is provided on the positioning boss. After the positioning base is straightened and aligned for the first time, it can be directly positioned and used according to different positioning sub-plates, without the need for separate positioning, straightening and alignment, thereby saving production and processing time. Positioning columns and positioning plates are provided on the positioning sub-plate to position and fix the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0015] Figure 1 An exploded view of a zero-point positioning tooling for a valve block that can be quickly replaced according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the positioning base structure according to an embodiment of the utility model;

[0017] Figure 3 This is a structural schematic diagram of the positioning sub-plate according to an embodiment of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the wire thread sleeve described in an embodiment of the utility model;

[0019] Description of reference numerals:

[0020] 1-positioning base, 101-connecting hole, 2-positioning sub-plate, 3-rib platform, 4-left rib platform, 5-right rib platform, 6-positioning hole, 7-positioning sleeve, 8-second fastening bolt, 9-wire screw sleeve, 10-fastening bolt, 11-threaded hole, 12-valve block, 13-positioning column, 14-positioning plate, 15-second positioning hole, 16-second threaded hole. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] This embodiment relates to a zero-point positioning tool for a valve block that can be quickly replaced, such as Figure 1 As shown, it comprises a positioning base 1 having a plurality of connection holes 101, a positioning boss fixedly connected to the positioning base 1 to accommodate a valve block 12, and a positioning sub-plate 2 detachably fixedly connected to the positioning boss.

[0024] In the above structure, Figure 1 Combination Figure 2 As shown, the cross section of the positioning base 1 is square, and the connecting holes 101 are multiple and arranged along the edge of the positioning base 1, and the positioning boss is arranged at the center of the positioning base 1. In this embodiment, the positioning boss includes two ribs 3 arranged in a cross shape, and two divided ribs arranged on both sides of one of the ribs 3. For the convenience of description, the two divided ribs are respectively referred to as the left rib 4 and the right rib 5. In order to ensure the accuracy of the assembly of the positioning sub-plate 2, in this embodiment, a positioning hole 6 is respectively arranged at one end of the left rib 4 and the right rib 5, and the connection path of the two positioning holes 6 is the center of the positioning boss, and positioning parts for positioning the installation of the positioning sub-plate 2 are respectively installed in the two positioning holes 6.

[0025] In this embodiment, the positioning part includes a positioning sleeve 7 inserted into the positioning hole 6, and a positioning pin (not shown in the figure) inserted into the positioning sleeve 7. In this embodiment, the positioning sleeve 7 is made of alloy and has a hollow structure. Its outer diameter is adapted to the diameter of the positioning hole 6, and its inner diameter is adapted to the diameter of the positioning pin. In this embodiment, by providing the positioning sleeve 7, it is possible to prevent the positioning pin from directly rubbing against the positioning hole 6 and affecting the accuracy of the positioning hole 6, thereby improving the service life of the positioning base 1.

[0026] In order to facilitate fixing the positioning sub-plate 2 on the positioning base 1, a connecting component is provided between the positioning sub-plate 2 and the positioning boss in this embodiment. Figure 1 Combination Figure 4 As shown, the connection assembly includes a wire screw sleeve 9 threadedly connected to the positioning boss, and a fastening bolt 10 passing through the positioning sub-plate 2 and threadedly connected to the wire screw sleeve 9. In order to facilitate the threading of the wire screw sleeve 9, threaded holes 11 are formed at the ends of the two ribs 3 in this embodiment, and threaded holes 11 are also provided at the ends of the left rib 4 and the right rib 5 (the other end relative to the positioning hole 6). When installing, the wire screw sleeve 9 is first screwed into the threaded hole 11, and then the positioning sub-plate 2 is inserted along the positioning pin and fits the top of the positioning boss. Finally, the fastening bolt 10 is passed through the positioning sub-plate 2 (a countersunk hole for the fastening bolt 10 to pass through is formed on the positioning sub-plate 2) and then screwed into the threaded hole 11. In this embodiment, by providing the wire screw sleeve 9, the service life of the thread can be increased and the tightening strength of the thread can be strengthened.

[0027] In order to position the valve block 12 on the positioning sub-plate 2, in this embodiment, a positioning column 13 and a positioning plate 14 are installed on the positioning sub-plate 2, or the positioning column 13 and the positioning plate 14 are used alone. Figure 3As shown, in order to facilitate the installation of the positioning column 13, a plurality of second positioning holes 15 are formed on the positioning sub-plate 2 in this embodiment, and each positioning column 13 is selectively inserted into each second positioning hole 15. In this embodiment, the positioning plate 14 is located on one side of the positioning sub-plate 2. In terms of specific structure, in order to facilitate the arrangement of the positioning plate 14, a second threaded hole 16 is provided on the side of the positioning sub-plate 2 in this embodiment. When in use, firstly, according to the hole position at the bottom of the valve block 12, the positioning column 13 at a suitable position is inserted on the positioning sub-plate 2, and then the valve block 12 is inserted on the positioning sub-plate 2 along each positioning column 13, and then the second fastening bolt 8 is passed through the positioning plate 14 and screwed into the second threaded hole 16, so that the positioning plate 14 abuts against the valve block 12 to form a positioning. In this embodiment, the positioning sub-plate 2 can hold two valve blocks 12, and at this time, the number of positioning plates 14 can be set to two, and two of them are placed on two opposite sides of the positioning sub-plate 2.

[0028] The principle of rapid zero-point positioning: use a dial indicator to straighten the positioning base 1 to align the horizontal cross position, and then use bolts not shown in the figure to fix it on the machine tool worktable, and then assemble the positioning sleeve 7 and the positioning pin through the two positioning holes 6 on the positioning base 1 to ensure the accuracy of the positioning reference, and then, when the positioning zero-point reference remains unchanged, the two positioning pins can automatically realize the zero-point positioning reference of the positioning sub-plate 2, thus ensuring that the processing coordinate system does not need to be changed, and positioning processing can be carried out quickly.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero-point positioning tool for a valve block that can be quickly replaced, characterized in that: It includes a positioning base with multiple connecting holes, a positioning boss fixedly connected to the positioning base, and a positioning sub-plate detachably connected to the positioning boss to accommodate the valve block, and a positioning column and a positioning plate are installed on the positioning sub-plate; the positioning boss includes two ribs arranged in a cross shape, and two sub-ribs arranged on both sides of one of the ribs, and positioning holes are respectively arranged at the end of one of the two sub-ribs, and a positioning part for positioning the positioning sub-plate is arranged in the positioning hole.

2. The quickly replaceable zero-point positioning fixture for the valve block according to claim 1, characterized in that: The positioning part comprises a positioning sleeve sleeved in the positioning hole and a positioning pin inserted in the positioning sleeve.

3. The quickly replaceable zero-point positioning fixture for the valve block according to claim 1, characterized in that: On the two rib platforms, a line connecting the two positioning holes positions the center of the boss.

4. The quickly replaceable zero-point positioning fixture for the valve block according to claim 1, characterized in that: The positioning plates are two plates arranged on two opposite sides of the positioning sub-plate.

5. The quickly replaceable zero-point positioning fixture for the valve block according to claim 4, characterized in that: A connecting component is arranged between the positioning sub-plate and the positioning boss.

6. The quickly replaceable zero-point positioning fixture for the valve block according to claim 5, characterized in that: The connecting assembly includes a wire thread sleeve threadedly connected to the positioning boss, and a fastening bolt passing through the positioning sub-plate and threadedly connected to the wire thread sleeve.

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