Adjustable machine tool fixture capable of positioning two holes on one surface

Abstract

The utility model discloses an adjustable machine tool fixture capable of positioning two holes on one surface. The adjustable machine tool fixture comprises a fixture body, a positioning unit and a clamping unit, the positioning unit comprises a positioning assembly mounting groove and a positioning assembly, and the positioning assembly mounting groove penetrates through the clamp body; the positioning assembly installation grooves are distributed in the two sides of the symmetry axis of the clamp body in a splayed mode, and the positioning assemblies are installed in the positioning assembly installation grooves at will. The clamping unit comprises a clamping assembly mounting groove and a clamping assembly, and the clamping assembly mounting groove penetrates through the clamp body; the clamping assembly installation grooves are distributed in parallel on two sides of the symmetry axis of the clamp body and located on the outer sides of the positioning assembly installation grooves. According to the adjustable machine tool clamp capable of achieving positioning through the two holes in one face, the space between the positioning pins and the positions of the locking bolts can be adjusted through a certain mechanism, and the adjustable machine tool clamp is simple in structure, reasonable in design, convenient to install, low in cost and convenient to use and popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an adjustable machine tool fixture with two positioning holes on one side. Background Art

[0002] In the machining industry, workpiece positioning and clamping are key links in machining accuracy and efficiency. Traditional machine tool fixtures are usually fixed structures and cannot adapt to the requirements of different workpiece sizes. In five-axis machine tools, two-hole positioning on one side is often required, and each workpiece requires a special fixture. However, single-piece and small-batch production has become the norm, so the common fixture solutions have become more and more costly and inefficient. In addition, in the existing fixture solutions, it is difficult to accurately match the workpiece locating holes and the fixture locating pins, which places high demands on both process designers and operators. Therefore, there is an urgent need for a fixture that can be flexibly adjusted according to the needs of different workpieces to improve operational flexibility and machining accuracy. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable machine tool fixture with two holes on one side for positioning, so as to solve the problem in the existing technology that the fixture workpiece positioning holes and the fixture positioning pins are difficult to accurately match, and the requirements for both process designers and operators are high, resulting in high cost and low efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an adjustable machine tool fixture with two holes for positioning on one side, comprising a clamping body and a positioning unit and a clamping unit installed on the clamping body.

[0005] The positioning unit comprises two pairs of positioning component installation grooves provided on the clamp body and two positioning components installed in the positioning component installation grooves, and the positioning component installation grooves pass through the clamp body.

[0006] The two pairs of positioning component installation grooves are both distributed in an eight-shaped manner on both sides of the symmetry axis of the clamp body, and the two positioning components are arbitrarily installed in the positioning component installation grooves.

[0007] A cylindrical pin is installed on one of the positioning components, and a diamond pin is installed on the other positioning component.

[0008] The clamping unit comprises a pair of clamping assembly installation grooves provided on the clamping body and two clamping assemblies installed in each clamping assembly installation groove, and the clamping assembly installation grooves pass through the clamping body.

[0009] The clamping assembly installation grooves are parallelly distributed on both sides of the symmetry axis of the clamp body, and the clamping assembly installation grooves are located outside the positioning assembly installation grooves.

[0010] The utility model also has the following technical features:

[0011] The clamp body is divided into two layers, namely a disc-shaped clamp body base and a rectangular parallelepiped clamp body platform located at the geometric center of one side of the clamp body base.

[0012] The clamp base is provided with a plurality of clamp installation connection grooves along the radial direction, and the positioning component installation groove and the clamping component installation groove are provided on the clamp base and pass through the clamp base and the clamp base.

[0013] A step is further provided in the positioning component installation groove, and the wider side of the positioning component installation groove faces away from the clamping base.

[0014] A step is further provided in the clamping assembly installation groove, and the wider side of the clamping assembly installation groove faces away from the clamping base.

[0015] The positioning assembly is divided into three parts, namely a positioning pin connector, a positioning locking slider, and a positioning locking bolt.

[0016] The positioning pin connector is divided into two parts, namely a positioning locking mounting block and a positioning pin mounting column located on one side of the positioning locking mounting block. The positioning pin mounting column is cylindrical and has a positioning pin mounting hole at one end facing away from the positioning locking mounting block.

[0017] A locking slider installation threaded hole is provided on the side of the positioning locking installation block facing away from the positioning pin installation column, and a positioning locking slider is installed on the locking slider installation threaded hole;

[0018] The positioning locking slide block is connected to the positioning locking mounting block via a positioning locking bolt;

[0019] The positioning pin installation hole faces the direction of the clamping base, and the positioning locking slider cooperates with the step in the positioning component installation groove.

[0020] The clamping assembly includes a support plate, a hexagon socket bolt and a gasket.

[0021] The support plate is provided with a support hole, a hexagon socket bolt is passed through the support hole, and a gasket is arranged between the hexagon socket bolt and the support hole;

[0022] The gasket faces away from the clamping base, and the support plate cooperates with the step in the mounting groove of the clamping assembly.

[0023] The fixture installation connection groove is open toward one side of the edge of the fixture base, and the positioning locking slider is connected to the positioning pin connector through a bolt.

[0024] Compared with the prior art, the present invention has the following technical effects:

[0025] (I) The utility model provides an adjustable machine tool fixture with two holes for positioning on one side. A certain mechanism is used to enable the machine tool fixture to adjust the spacing between the positioning pins and the position of the locking bolts. It has a simple structure, a reasonable design, is easy to install, has a low cost, and is easy to promote and use.

[0026] (II) The utility model provides an adjustable machine tool fixture with two holes for positioning on one side, which has a simple structure, a reasonable design, a completely mechanical structure, high efficiency, low cost, simple operation, and is easy to promote and use. It is particularly suitable for complex workpieces with two holes for positioning on one side, but can also be applied to workpieces of other shapes and requirements, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0028] Figure 2 It is a rear view structural schematic diagram of the present utility model.

[0029] Figure 3 This is a schematic diagram of the positioning component structure.

[0030] Figure 4 Schematic diagram of the positioning pin connector structure.

[0031] Figure 5 It is a schematic diagram of the positioning and locking slider structure.

[0032] Figure 6 Schematic diagram of the clamping assembly structure.

[0033] Figure 7 Schematic diagram of the cooperation between the workpiece and the diamond pin and cylindrical pin.

[0034] Figure 8 This is a schematic diagram of the usage structure of the utility model.

[0035] The meaning of each reference numeral in the accompanying drawings:

[0036] 1- Clamping base, 2- Positioning unit, 3- Clamping unit, 4- Workpiece, 5- Diamond pin, 6- Cylindrical pin.

[0037] 1-1-clamp concrete base, 1-2-clamp concrete table, 1-3-clamp installation connecting groove.

[0038] 2-1-positioning component installation slot, 2-2-positioning component.

[0039] 3-1-clamping assembly mounting slot, 3-2-clamping assembly.

[0040] 2-2-1-Location pin connector, 2-2-2-Location locking slider, 2-2-3-Location locking bolt.

[0041] 2-2-1-1-Positioning locking mounting block, 2-2-1-2-Positioning pin mounting column, 2-2-1-3-Positioning pin mounting hole, 2-2-1-4-Locking slider mounting threaded hole.

[0042] 3-2-1 - Support plate, 3-2-2 - Support hole, 3-2-3 - Hexagon socket bolt, 3-2-4 - Washer.

[0043] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0044] Unless otherwise specified, all components in the present invention are components known in the prior art.

[0045] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the scope of protection of the present invention.

[0046] Example 1:

[0047] This embodiment provides an adjustable machine tool fixture with two holes for positioning on one side, as shown in FIG1 , comprising a fixture body 1 and a positioning unit 2 and a clamping unit 3 mounted on the fixture body 1 .

[0048] The positioning unit 2 includes two pairs of positioning component installation grooves 2 - 1 provided on the clamp body 1 and two positioning components 2 - 2 installed in the positioning component installation grooves 2 - 1 . The positioning component installation grooves 2 - 1 pass through the clamp body 1 .

[0049] The two pairs of positioning component installation grooves 2-1 are distributed in an eight-shaped manner on both sides of the symmetry axis of the clamp body 1, and the two positioning components 2-2 are arbitrarily installed in the positioning component installation grooves 2-1.

[0050] A cylindrical pin is installed on one of the positioning components 2-2, and a diamond pin is installed on the other positioning component 2-2.

[0051] The two locating pins and the two locating holes at the bottom of the workpiece have a tight clearance fit; there is a tolerance error in the center distance of the locating holes. If the two pins are cylindrical pins, the two pins on the fixture cannot "accurately" fit with the two holes of the workpiece and cannot be installed.

[0052] When one of the pins is a diamond-shaped pin, the center-to-center distance error of the locating holes cannot interfere with the fit of the two pins and holes. From the perspective of positioning and limiting degrees of freedom, the two cylindrical pins are over-positioned. The long axis of the diamond-shaped pin must be perpendicular to the centerline connecting the two pin holes; otherwise, the diamond-shaped pin loses its effectiveness.

[0053] The clamping unit 3 includes a pair of clamping assembly mounting grooves 3 - 1 provided on the clamping body 1 and two clamping assemblies 3 - 2 mounted in each clamping assembly mounting groove 3 - 1 . The clamping assembly mounting grooves 3 - 1 pass through the clamping body 1 .

[0054] The clamping assembly installation grooves 3 - 1 are distributed in parallel on both sides of the symmetry axis of the clamp body 1 , and the clamping assembly installation grooves 3 - 1 are located outside the positioning assembly installation grooves 2 - 1 .

[0055] In this embodiment, the end with the smaller spacing between the lower pair of positioning component mounting grooves 2-1 is located in the middle of the end with the larger spacing between the upper pair of positioning component mounting grooves 2-1, and the line connecting the end with the smaller spacing between the lower pair of positioning component mounting grooves 2-1 and the end with the larger spacing between the upper pair of positioning component mounting grooves 2-1 passes through the geometric center of the clamp body 1.

[0056] The advantage of using two pairs of "eight"-shaped positioning component mounting slots is that they can better adapt to changes in the center distance between the two positioning holes of the workpiece. For example, if the workpiece positioning holes are in the middle of the workpiece and the distance is large, the upper positioning component mounting slot can be used. If the workpiece positioning holes are in the middle of the workpiece but the distance is small, the lower positioning component mounting slot can be used.

[0057] As a preferred embodiment of this invention:

[0058] The clamp body 1 is divided into two layers, namely a disc-shaped clamp body base 1-1 and a rectangular clamp body platform 1-2 located at the geometric center of one side of the clamp body base 1-1.

[0059] The clamp base 1-1 is radially provided with a plurality of clamp installation connection grooves 1-3, and the positioning component installation groove 2-1 and the clamping component installation groove 3-1 are provided on the clamp base 1-2 and pass through the clamp base 1-1 and the clamp base 1-2.

[0060] In this embodiment, the fixture installation connecting grooves 1-3 are four radial grooves to accommodate fixture installation holes distributed on different circumferences.

[0061] As a preferred embodiment of this invention:

[0062] A step is further provided in the positioning component installation groove 2-1, and the wider side of the positioning component installation groove 2-1 faces away from the clamping base 1-2.

[0063] A step is further provided in the clamping assembly installation slot 3 - 1 , and the wider side of the clamping assembly installation slot 3 - 1 faces away from the clamping base 1 - 2 .

[0064] As a preferred embodiment of this invention:

[0065] The positioning assembly 2-2 is divided into three parts, namely a positioning pin connector 2-2-1, a positioning locking slider 2-2-2, and a positioning locking bolt 2-2-3.

[0066] The positioning pin connector 2-2-1 is divided into two parts, namely the positioning locking mounting block 2-2-1-1 and the positioning pin mounting column 2-2-1-2 located on one side of the positioning locking mounting block 2-2-1-1. The positioning pin mounting column 2-2-1-2 is cylindrical in shape, and a positioning pin mounting hole 2-2-1-3 is provided at the end facing away from the positioning locking mounting block 2-2-1-1.

[0067] A locking slider mounting threaded hole 2-2-1-4 is provided on the side of the positioning locking mounting block 2-2-1-1 facing away from the positioning pin mounting column 2-2-1-2, and a positioning locking slider 2-2-2 is mounted on the locking slider mounting threaded hole 2-2-1-4.

[0068] The positioning locking slide block 2-2-2 is connected to the positioning locking mounting block 2-2-1-1 via a positioning locking bolt 2-2-3.

[0069] The positioning pin mounting hole 2-2-1-3 faces the direction of the clamping base 1-2, and the positioning locking slider 2-2-2 cooperates with the step in the positioning component mounting groove 2-1. The positioning component 2-2 can be fixed at different positions in the positioning component mounting groove 2-1 to accommodate workpieces 4 of different sizes.

[0070] As a preferred embodiment of this invention:

[0071] The clamping assembly 3-2 includes a support plate 3-2-1, a hexagon socket bolt 3-2-3 and a gasket 3-2-4.

[0072] The support plate 3-2-1 is provided with a support hole 3-2-2, a hexagon socket bolt 3-2-3 is passed through the support hole 3-2-2, and a gasket 3-2-4 is arranged between the hexagon socket bolt 3-2-3 and the support hole 3-2-2.

[0073] The gasket 3-2-4 faces away from the clamping base 1-2, and the support plate 3-2-1 cooperates with the step in the clamping assembly mounting groove 3-1. The clamping assembly 3-2 can be fixed in different positions in the clamping assembly mounting groove 3-1 to accommodate workpieces 4 of different sizes.

[0074] As a preferred embodiment of this invention:

[0075] The clamp installation connection groove 1-3 is open toward one side of the edge of the clamp base 1-1, and the positioning locking slider 2-2-2 is connected to the positioning pin connector 2-2-1 through a bolt.

[0076] The specific usage of this embodiment is as follows:

[0077] When the traditional two-hole positioning is used, the positioning pin is first fixed on the fixture. When the utility model is clamping the workpiece, the positioning ends of the diamond pin 5 and the cylindrical pin 6 are first inserted into the positioning holes of the workpiece 4. Figure 7 shown.

[0078] like Figure 8 As shown, the lower surface of the workpiece 4 is aligned with the side of the clamping base 1-2 facing away from the clamping base 1-1. During this process, the mounting ends of the diamond pins 5 and cylindrical pins 6 are aligned with the positioning assembly mounting slots 4 to approximately the correct position. Next, the positioning assembly 2-2 is installed to mate with the cylindrical pins 6 and pre-tighten. Simultaneously, the clamping assembly 3-2 is installed according to the threaded hole position of the workpiece 4 and pre-tightened.

[0079] Fine-tune the clamp body 1 and install the other positioning component 2-2, so that the other positioning component 2-2 can smoothly cooperate with the diamond pin 5. At this time, tighten the bolts to complete the positioning. After that, tighten the hexagon socket bolts 3-2-3 to complete the clamping.

[0080] The traditional two-hole positioning process involves first installing two locating pins in fixed positions on the fixture, then fitting the workpiece onto the two locating pins. This can lead to deformation of the workpiece or the fixture after clamping if there's an error between the center-to-center distance between the workpiece's locating holes and the center-to-center distance between the locating pins. This patented method first inserts the locating pins into the workpiece's locating holes, then uses a locating assembly that moves along the locating assembly's mounting slot to align with the locating pins, eliminating errors and ensuring accurate positioning.

[0081] The utility model discloses an adjustable machine tool clamp with two holes for positioning on one side, which has reasonable design, adopts a simple mechanical structure, has low cost, and makes the clamping operation simple and efficient through reverse thinking, and is easy to promote and use.

[0082] The above technical solutions are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present invention without creative work are all covered by the protection scope of the present invention.

Claims

1. An adjustable machine tool fixture with two holes on one side, characterized in that: It comprises a clamping body (1), a positioning unit (2) and a clamping unit (3) mounted on the clamping body (1); The positioning unit (2) comprises two pairs of positioning component installation grooves (2-1) provided on the clamp body (1) and two positioning components (2-2) installed in the positioning component installation grooves (2-1), wherein the positioning component installation grooves (2-1) pass through the clamp body (1); The two pairs of positioning component installation grooves (2-1) are both distributed in an eight-shaped manner on both sides of the symmetry axis of the clamp body (1), and the two positioning components (2-2) are arbitrarily installed in the positioning component installation grooves (2-1); A cylindrical pin is installed on one of the positioning components (2-2), and a diamond pin is installed on the other positioning component (2-2); The clamping unit (3) comprises a pair of clamping assembly mounting grooves (3-1) provided on the clamping body (1) and two clamping assemblies (3-2) mounted in each clamping assembly mounting groove (3-1), wherein the clamping assembly mounting groove (3-1) passes through the clamping body (1); The clamping assembly installation groove (3-1) is distributed in parallel on both sides of the symmetry axis of the clamp body (1), and the clamping assembly installation groove (3-1) is located outside the positioning assembly installation groove (2-1).

2. The adjustable machine tool fixture with two holes on one side as claimed in claim 1, characterized in that: The clamp body (1) is divided into two layers, namely a disc-shaped clamp body base (1-1) and a rectangular clamp body platform (1-2) located at the geometric center of one side of the clamp body base (1-1); The clamp base (1-1) is provided with a plurality of clamp installation connection grooves (1-3) along the radial direction, and the positioning component installation groove (2-1) and the clamping component installation groove (3-1) are provided on the clamp base (1-2) and penetrate the clamp base (1-1) and the clamp base (1-2).

3. The adjustable machine tool fixture with two holes on one side as claimed in claim 2, characterized in that: A step is further provided in the positioning component installation groove (2-1), and the wider side of the positioning component installation groove (2-1) faces away from the clamping base (1-2); A step is also provided in the clamping assembly installation groove (3-1), and the wider side of the clamping assembly installation groove (3-1) faces away from the clamping base (1-2).

4. The adjustable machine tool fixture with two holes on one side as claimed in claim 3, characterized in that: The positioning assembly (2-2) is divided into three parts, namely a positioning pin connector (2-2-1), a positioning locking slider (2-2-2), and a positioning locking bolt (2-2-3); The positioning pin connector (2-2-1) is divided into two parts, namely a positioning locking mounting block (2-2-1-1) and a positioning pin mounting column (2-2-1-2) located on one side of the positioning locking mounting block (2-2-1-1); the positioning pin mounting column (2-2-1-2) is cylindrical and has a positioning pin mounting hole (2-2-1-3) at one end facing away from the positioning locking mounting block (2-2-1-1); A locking slider installation threaded hole (2-2-1-4) is provided on the side of the positioning locking installation block (2-2-1-1) facing away from the positioning pin installation column (2-2-1-2), and a positioning locking slider (2-2-2) is installed on the locking slider installation threaded hole (2-2-1-4); The positioning locking slide block (2-2-2) is connected to the positioning locking mounting block (2-2-1-1) via a positioning locking bolt (2-2-3); The positioning pin installation hole (2-2-1-3) faces the direction of the clamping base (1-2), and the positioning locking slider (2-2-2) cooperates with the step in the positioning component installation groove (2-1).

5. The adjustable machine tool fixture with two holes on one side as claimed in claim 3, characterized in that: The clamping assembly (3-2) comprises a support plate (3-2-1), a hexagon socket bolt (3-2-3) and a gasket (3-2-4); The support plate (3-2-1) is provided with a support hole (3-2-2), a hexagon socket bolt (3-2-3) is passed through the support hole (3-2-2), and a gasket (3-2-4) is arranged between the hexagon socket bolt (3-2-3) and the support hole (3-2-2); The gasket (3-2-4) faces away from the clamping base (1-2), and the support plate (3-2-1) cooperates with the step in the clamping assembly installation slot (3-1).

6. The adjustable machine tool fixture with two holes on one side as claimed in claim 4, characterized in that: The clamp installation connection groove (1-3) is open toward one side of the edge of the clamp base (1-1); The positioning locking slide block (2-2-2) is connected to the positioning pin connector (2-2-1) via a bolt.

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