Zero point positioning disk

Abstract

This utility model provides a zero-point positioning disc, which serves as a fixed reference point for securing a central vise and automatically calibrating the zero point. It comprises: a disc body with a connecting rod channel and several insertion holes for inserting positioning pins at the bottom of the central vise; a locking linkage assembly installed within the connecting rod channel, which further includes an actuating rod, two transmission rods, two first engaging rods, two second engaging rods, and intermediate spheres, first spheres, second spheres, and two tensile elastic bodies located between the rods; by operating the actuating rod to drive the locking linkage assembly, the positioning pins of the central vise are secured to the zero-point positioning disc, facilitating the processing of the workpiece clamped in the central vise.

Description

Technical Field

[0001] This utility model relates to the field of machine tool accessories, and more particularly to the category of a zero-point positioning plate for securing a center vise. Background Technology

[0002] Zero-point positioning systems have become essential tools for CNC (Computer Numerical Control) manufacturers, automated production lines, and industries requiring high precision and rapid mold changeover (such as automotive, aerospace, medical technology, and electronics manufacturing). Market demand for rapid zero-point positioning systems will continue to grow, primarily driven by the manufacturing industry's pursuit of precision and efficiency; thus, the global market size will continue to expand.

[0003] The main function of the zero-point positioning plate in the zero-point positioning system is to ensure that the workpiece or center vise can be accurately and repeatedly positioned on a fixed reference point (zero point), and the repeatability can usually reach the micron level, as disclosed in the technical content of the Taiwan No. TWM589092 "Zero-point positioning indexing plate structure for multi-axis machining centers".

[0004] However, most existing zero-point positioning discs 9 currently have existing locking linkage assemblies 99 inside, such as... Figure 14 As shown, the connecting rods are driven by mutual pushing through a larger contact surface such as conical surface 91, inclined surface 92, or a combination thereof. This results in high friction between the connecting rods, which makes the operation of the zero-point positioning plate's locking and engaging center vise poor. It also easily wears down the ends of the connecting rods, thereby reducing the overall service life of the locking rod assembly. Utility Model Content

[0005] In view of the existing problems of zero-point positioning plates, the main purpose of this utility model is to provide a zero-point positioning plate with better operability; the secondary purpose of this utility model is to provide a zero-point positioning plate with low wear; another purpose of this utility model is to provide a zero-point positioning plate that can improve the machining efficiency of CNC machine tools.

[0006] To achieve the above objectives, this utility model provides a zero-point positioning disk, comprising: a disk body with a connecting rod channel and several insertion holes thereon; an actuating rod installed in the connecting rod channel, with an intermediate ball connected to its inner end; and two transmission rods installed in the connecting rod channel, one end of each transmission rod connected to two positions of the intermediate ball, and the other end of each transmission rod connected to a first ball and a second ball. A second sphere; two locking rod assemblies installed in the connecting rod channel, wherein the two locking rod assemblies are provided with two first locking rods and two second locking rods, wherein the inner ends of the two first locking rods are respectively connected to two positions of the first sphere, and the inner ends of the two second locking rods are respectively connected to two positions of the second sphere, and the plurality of insertion holes are located at the outer ends of the two first locking rods and the two second locking rods; and two tensile elastic bodies are respectively connected between the two first locking rods and between the two second locking rods.

[0007] The linkage channel also includes an actuation channel, a transmission channel, and two engagement channels, with the transmission channel connecting the two engagement channels and the actuation channel connecting the transmission channel; and the actuation rod, the two transmission rods, and the two engagement rod assemblies are respectively installed in the actuation channel, the transmission channel, and the two engagement channels.

[0008] The two engagement channels are arranged to be parallel to each other and penetrate the side of the disc to form four side openings, while the transmission channel penetrates the side of the disc and the two engagement channels to form two more side openings.

[0009] The disc body has a plug attached to each of the side openings; the actuation channel extends through the side of the disc body to form an enlarged hole, and a knob is provided in the enlarged hole, which is connected to the outer end of the actuation rod; the enlarged hole has an internal thread, and the knob has an external thread around its perimeter, while the end face of the knob has an internal hexagonal hole.

[0010] The actuator rod has a ball socket on its inner end to abut against the middle ball, and one end of each of the two transmission rods is a conical part to abut against two positions of the middle ball, while the other end of each transmission rod has a ball socket to abut against the first ball and the second ball, respectively.

[0011] The inner ends of the two first engaging rods are respectively provided with an inner inclined surface to abut against two positions of the first ball, and the inner ends of the two second engaging rods are also respectively provided with an inner inclined surface to abut against two positions of the second ball.

[0012] The number of insertion holes is set to four, and the outer ends of the two first locking rods and the two second locking rods are both set to beveled tips, which extend into or retract from the four insertion holes.

[0013] The outer side between the two first engaging rods has a receiving groove for mounting a tension elastomer, and the outer side between the two second engaging rods has another receiving groove for mounting another tension elastomer.

[0014] Each of the two stretching elastomers is configured as a stretching spring, and the two stretching springs are respectively connected to the two receiving grooves by several screws.

[0015] The system includes a separate unit to provide several zero-point positioning plates that can be placed side-by-side, vertically, or at an angle, to facilitate the installation of more center vises and improve the machining efficiency of the CNC machine tool. The intermediate sphere is integrally formed on the inner end of the actuating rod as an intermediate hemispherical end, and one end of the two transmission rods is respectively connected to two positions on the intermediate hemispherical end. The other ends of the two transmission rods are integrally formed on the first sphere and the second sphere as a first hemispherical end and a second hemispherical end, respectively.

[0016] By employing the above-mentioned technical means, this utility model can achieve the following effects:

[0017] 1. In this utility model, each link of the locking linkage assembly uses a ball or hemisphere to match a conical or inclined surface with a small contact surface for mutual pushing and transmission. That is, the friction between the links is small, thereby improving the operability of the locking and connecting center vise of the zero-point positioning plate.

[0018] 2. When the locking linkage assembly of this utility model uses several spheres or hemispheres to participate in the transmission and linkage between the linkages, the contact area between the linkages is small, resulting in lower friction, thereby achieving a low-wear locking linkage assembly, and thus giving rise to a zero-point positioning disc with a longer service life.

[0019] 3. This utility model can provide several zero-point positioning plates placed side by side, vertically, or at an angle to facilitate the installation of more center vises and improve the machining efficiency of CNC machine tools. Attached Figure Description

[0020] Figure 1 This is an example drawing of the zero-point positioning disk of this utility model applied to a square disk.

[0021] Figure 2 This is a cross-sectional view of the zero-point positioning disc of this utility model, showing the unsecured central vise.

[0022] Figure 3 This is an exploded view of the locking linkage assembly of this utility model.

[0023] Figure 4 This is a cross-sectional view of the zero-point positioning disc of this utility model, showing the fixed connection of the central vise.

[0024] Figure 5 This utility model Figure 2 Regarding the cross-sectional view of position aa and the schematic diagram of the operation of the central vise of the two locking rod group.

[0025] Figure 6 This is an exploded view of another embodiment of the locking linkage assembly of this utility model.

[0026] Figure 7 This is a cross-sectional view of another embodiment of the zero-point positioning disk of this utility model, showing the unsecured connection of the central vise.

[0027] Figure 8 This is an example drawing of the zero-point positioning disk of this utility model applied to a circular disk.

[0028] Figure 9 This is an example drawing of the zero-point positioning disk of this utility model applied to a rectangular disk.

[0029] Figure 10 The present invention provides an embodiment in which the square plate is erected and has a relatively thick thickness, so that both sides of the square plate are set as a zero-point positioning structure.

[0030] Figure 11 The present invention provides an embodiment in which the triangular prism disk is erected and mounted on a body, so that all three sides of the triangular prism disk are set as a zero-point positioning structure.

[0031] Figure 12 The present invention provides an embodiment in which a four-corner column plate is erected and mounted on a body, so that each of the four sides of the four-corner column plate is provided with several zero-point positioning structures.

[0032] Figure 13 This invention relates to an embodiment in which three circular zero-point positioning discs are placed obliquely on a hemispherical base.

[0033] Figure 14 This is a schematic diagram of an existing locking linkage assembly.

[0034] Figure labeling: A - Zero-point positioning plate; B - Center vise; b1 - Positioning pin; b2 - Slot; C - Locking linkage assembly; 1 - Plate body; 10 - Linkage channel; 11 - Insertion hole; 12 - Actuation channel; 13 - Transmission channel; 14 - Engaging channel; 14a - Engaging channel; 15 - Side opening; 16 - Hole plug; 17 - Enlarged hole; 18 - Internal thread; 19 - Seat body; 2 - Actuating rod; 21 - Knob; 22 - External thread; 23 - Internal hexagonal hole; 24 - Ball socket; 3 - Intermediate ball; 31 - Intermediate hemispherical end; 4 - Transmission rod; 4a - Transmission rod; 4 1-Conical portion; 42-Spherical socket; 5-First sphere; 51-First hemispherical end; 6-Second sphere; 61-Second hemispherical end; 7-Clamping rod assembly; 7a-Clamping rod assembly; 71-First clamping rod; 71a-First clamping rod; 711-Inner inclined surface; 712-Slanted tip; 72-Second clamping rod; 72a-Second clamping rod; 721-Inner inclined surface; 722-Slanted tip; 73-Accommodating groove; 8-Tension elastic body; 8a-Tension elastic body; 81-Tension spring; 82-Screw; 9-Existing locking linkage assembly; 91-Conical surface; 92-Slanted surface. Detailed Implementation

[0035] like Figure 1 As shown, this utility model provides a zero-point positioning disc, which provides a fixed reference point for securing a central vise B and automatically correcting the zero point. The zero-point positioning disc A includes: a disc body 1, a moving rod 2, two transmission rods 4; 4a, two locking rod groups 7; 7a, and two tensile elastic bodies 8; 8a. The above components are described below with reference to the accompanying drawings.

[0036] like Figures 1 to 3 As shown, the disc body 1 has a connecting rod channel 10 for mounting a locking connecting rod assembly C, and the connecting rod channel 10 has several insertion holes 11; wherein the connecting rod channel 10 also includes an actuation channel 12, a transmission channel 13, a locking channel 14 and a locking channel 14a, and the transmission channel 13 connects the locking channel 14 and the locking channel 14a, while the actuation channel 12 connects the transmission channel 13; and wherein the locking channel 14 and the locking channel 14a connect the actuation channel 12 and the locking channel 14a. Channels 14a are arranged to be parallel to each other and penetrate the side of the disc body 1 to form four side openings 15. The transmission channel 13 penetrates the side of the disc body 1 and the engaging channel 14 and the engaging channel 14a to form two more side openings 15, and each side opening 15 is connected to a plug 16. The actuation channel 12 penetrates the side of the disc body 1 to form an enlarged hole 17, and the enlarged hole 17 is provided with an internal thread 18. The disc body 1 is preferably a square disc or a round disc (e.g., Figure 7 (As shown).

[0037] like Figure 2 and Figure 3As shown, the actuating rod 2 is installed within the actuation channel 12, and an intermediate ball 3 is connected to the inner end of the actuating rod 2, while a knob 21 is connected to the outer end of the actuating rod 2. The knob 21 has an external thread 22 around its periphery, and an internal hexagonal hole 23 on its end face. The knob 21 engages with the internal thread 18 of the enlarged hole 17 through its external thread 22. Furthermore, the inner end of the actuating rod 2 has a ball socket 24 to abut against the intermediate ball 3. Alternatively, the intermediate ball 3 can be integrally formed into an intermediate hemispherical end 31 on the inner end of the actuating rod 2, omitting the ball socket 24, so that one end of each of the two transmission rods is respectively connected to two positions on the intermediate hemispherical end 31. Figure 6 and Figure 7 Another embodiment of the locking linkage assembly shown can also achieve the same function and effect.

[0038] like Figure 2 and Figure 3 As shown, the two transmission rods 4 and 4a are installed within the transmission channel 13, and the two conical portions 41 at one end of the transmission rods 4 and 4a are respectively connected to two positions of the intermediate sphere 3. The two ball sockets 42 at the other end of the transmission rods 4 and 4a are respectively connected to a first sphere 5 and a second sphere 6. Alternatively, the other ends of the transmission rods 4 and 4a can be integrally formed into the first sphere 5 and the second sphere 6 as a first hemispherical end 51 and a second hemispherical end 61, respectively, omitting the two ball sockets 42. Figure 6 and Figure 7 Another embodiment of the locking linkage assembly shown can also achieve the same function and effect.

[0039] like Figure 2 and Figure 3As shown, the two locking rod assemblies 7 and 7a are respectively installed in the locking channel 14 and the locking channel 14a. The locking rod assembly 7 is provided with a first locking rod 71 and a first locking rod 71a, while the locking rod assembly 7a is provided with a second locking rod 72 and a second locking rod 72a. The inner ends of the first locking rod 71 and the first locking rod 71a are provided with two inner inclined surfaces 711 to abut against two positions on the first ball 5 respectively. The inner ends of the second locking rod 72 and the second locking rod 72a are also provided with two inner inclined surfaces. The surface 721 is respectively abutted against two positions on the second ball 6; and the plurality of insertion holes 11 are preferably four, and are respectively located at the two oblique tips 712 provided on the outer ends of the first engaging rod 71 and the first engaging rod 71a and the two oblique tips 722 provided on the outer ends of the second engaging rod 72 and the second engaging rod 72a, that is, the four oblique tips 712; 722 simultaneously extend into the four insertion holes 11 or extend into and retract from the four insertion holes 11, so as to securely engage the grooves b2 of the four positioning pins b1 provided at the bottom of the central vise B.

[0040] like Figure 2 and Figure 3 As shown, the two tensile elastic bodies 8 and 8a are respectively connected between the first engaging rod 71 and the first engaging rod 71a and between the second engaging rod 72 and the second engaging rod 72a; wherein the outer side of the first engaging rod 71 and the first engaging rod 71a forms a receiving groove 73 to provide for the installation of a tensile elastic body 8, and the outer side of the second engaging rod 72 and the second engaging rod 72a forms another receiving groove 73 to provide for the installation of a tensile elastic body 8a; wherein the tensile elastic body 8 and the tensile elastic body 8a are both configured as tension springs 81, and the two tension springs 81 are respectively connected in the two receiving grooves 73 by a number of screws 82.

[0041] Therefore, this utility model provides a preferred solution for a zero-point positioning plate, which mainly involves pre-installing the zero-point positioning plate on the machining platform of a CNC machine tool, and then inserting the four positioning pins b1 at the bottom of the center vise B into the four insertion holes 11 provided on the zero-point positioning plate A, as shown. Figure 4 and Figure 5 A tool such as a hexagonal wrench is inserted into the internal hexagonal hole 23 of the knob 21 to rotate the knob 21 clockwise. Through the external thread 22 and the internal thread 18 of the enlarged hole 17, the knob 21 is pushed into the disc through the ball socket 24 and pushes against the middle ball 3. The middle ball 3 or the middle hemispherical end 31 then pushes against the second conical part 41, so that the transmission rod 4 and the transmission rod 4a respectively push against the first ball 5 (or the first hemispherical end 51) and the second ball 6 (or the second hemispherical end 61).

[0042] Then, the first ball 5 or the first hemispherical end 51 together pushes against the two inner inclined surfaces 711, while the second ball 6 or the second hemispherical end 61 together pushes against the two inner inclined surfaces 721, so that the first locking rod 71, the first locking rod 71a, the second locking rod 72, and the second locking rod 72a simultaneously advance toward the corresponding insertion hole 11, so that the two inclined tips 712 and the two inclined tips 722 simultaneously embed into the four slots b2 of the four positioning pins b1 of the central vise B. In this way, the central vise B can be locked onto the zero-point positioning plate A by means of the locking linkage group C.

[0043] The basic applications of this utility model as described above, such as Figure 1 and Figure 8 As shown, besides the disk body 1 being preferably a square or round disk, other variations can also be derived, such as... Figures 9 to 13 As shown, this allows for the parallel installation of several zero-point positioning plates A, placed horizontally, vertically, or at an angle, to facilitate the installation of more center vises and improve the machining efficiency of the CNC machine tool; among which... Figure 9 This is an example drawing of the application of the zero-point positioning disk of this utility model to a rectangular disk, based on which two zero-point positioning disks A are placed side by side. Figure 10 In order to provide an embodiment of the present invention, the square disk is erected and has a relatively thick thickness, so that both sides of the square disk are set as a zero-point positioning structure, thereby providing two zero-point positioning disks A placed side by side. Figure 11 The present invention provides an embodiment in which a triangular prism disk is erected and placed on a body 19, so that all three sides of the triangular prism disk are set as a zero-point positioning structure, thereby providing three zero-point positioning disks A that are erected. Figure 12 The present invention provides an embodiment in which a four-cornered columnar plate is erected and placed on a body 19, so that each of the four sides of the four-cornered columnar plate is provided with several zero-point positioning structures, thereby providing an embodiment in which eight zero-point positioning plates A are erected. Figure 13 This invention provides an embodiment in which three circular zero-point positioning disks are obliquely placed on a hemispherical base 19, thereby providing three obliquely placed zero-point positioning disks A.

[0044] It should be noted that the above description is the technical principle used in the specific embodiments of this utility model. If any changes are made in accordance with the concept of this utility model, and the resulting functions and effects do not exceed the spirit covered by the specification and drawings of this utility model, they should be included within the protection scope of this utility model.

Claims

1. A zero-point positioning disk, characterized in that, Includes: A disc body with a connecting rod channel inside, and several insertion holes on the connecting rod channel; A actuator rod is installed in the linkage channel, and an intermediate ball is connected to the inner end of the actuator rod; Two transmission rods are installed in the connecting rod channel, with one end of each transmission rod connected to two positions on the intermediate sphere, and a first sphere and a second sphere connected to the other end of each transmission rod. A two-clamping rod assembly is installed within the connecting rod channel. The assembly includes two first clamping rods and two second clamping rods. The inner ends of the first clamping rods are respectively connected to two positions on the first sphere, and the inner ends of the second clamping rods are respectively connected to two positions on the second sphere. Several insertion holes are located at the outer ends of the first and second clamping rods. Two tensile elastomers are respectively connected between the two first engaging rods and between the two second engaging rods.

2. The zero-point positioning disk as described in claim 1, characterized in that: The linkage channel also includes an actuation channel, a transmission channel, and two engagement channels, with the transmission channel connecting to the two engagement channels and the actuation channel connecting to the transmission channel; wherein the actuation rod, the two transmission rods, and the two engagement rod assemblies are respectively installed in the actuation channel, the transmission channel, and the two engagement channels.

3. The zero-point positioning disk as described in claim 2, characterized in that: The two engagement channels are parallel to each other and extend through the side of the disc to form four side openings. The transmission channel extends through the side of the disc and the two engagement channels to form two more side openings.

4. The zero-point positioning disk as described in claim 3, characterized in that: Each side opening of the disc body is fitted with a plug; the actuation channel passes through the side of the disc body to form an enlarged hole, and a knob is provided in the enlarged hole, and the knob is connected to the outer end of the actuation rod; wherein the enlarged hole is provided with an internal thread, and the knob is provided with an external thread around its periphery, and the end face of the knob is provided with an internal hexagonal hole.

5. The zero-point positioning disk as described in claim 1, characterized in that: The inner end of the actuator rod is provided with a ball socket to abut against the intermediate ball, and one end of each of the two transmission rods is a conical part to abut against two positions of the intermediate ball respectively. The other end of each of the two transmission rods is provided with a ball socket to abut against the first ball and the second ball respectively.

6. The zero-point positioning disk as described in claim 5, characterized in that: The inner end of the first engaging rod is provided with an inner inclined surface to abut against two positions of the first ball, and the inner end of the second engaging rod is provided with an inner inclined surface to abut against two positions of the second ball.

7. The zero-point positioning disk as described in claim 6, characterized in that: The number of sockets is set to four, and the outer ends of the two first locking rods and the two second locking rods are both beveled tips, which extend into or retract from the four sockets.

8. The zero-point positioning disk as described in claim 1, characterized in that: A receiving groove is formed on the outer side between the two first engaging rods to provide for the installation of a tension elastomer, and another receiving groove is formed on the outer side between the two second engaging rods to provide for the installation of another tension elastomer.

9. The zero-point positioning disk as described in claim 8, characterized in that: Both of the tension elastomers are tension springs, and the two tension springs are respectively connected to the two receiving grooves by several screws.

10. The zero-point positioning disk as described in any one of claims 1 to 9, characterized in that: It also includes a body to provide several zero-point positioning plates that can be placed side by side, upright, or at an angle, in order to facilitate the installation of more center vises and improve the machining efficiency of CNC machine tools; and the intermediate ball is integrally formed on the inner end of the actuating rod as an intermediate hemispherical end, and one end of the two transmission rods is respectively connected to two positions on the intermediate hemispherical end; the other ends of the two transmission rods are integrally formed on the first ball and the second ball as a first hemispherical end and a second hemispherical end, respectively.

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