Mechanical zero positioning device

Abstract

The application belongs to the technical field of mechanical manufacturing, and specifically relates to a mechanical zero point positioning device. The device comprises a base assembly, a top seat assembly, a floating adjustment unit and a clamping adjustment unit. The top seat assembly comprises a top seat body. The bottom of the top seat body is provided with a recess inner cavity. A through hole for installing the clamping adjustment unit is radially arranged on the side surface of the top seat body. The base assembly comprises a bottom plate and a positioning boss matched with the recess inner cavity. The positioning boss is fixed to the middle of the top of the bottom plate. The floating adjustment unit is arranged on the bottom plate. An axial hole is arranged at the axial center of the positioning boss. The axial hole is matched with a screw rod, so that the positioning boss and the top seat assembly are detachably connected. A radial recess corresponding to the through hole and used for matching with the clamping adjustment unit is arranged on the side surface of the positioning boss. The technical scheme adopts a pure mechanical structure, is simple to manufacture, convenient to use and easy to maintain, can realize rapid and accurate positioning, clamping and loosening of a user platform provided with the top seat, and the positioning precision can reach 0.005mm.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical manufacturing, and particularly relates to a mechanical zero point positioning device. BACKGROUND

[0002] In the field of mechanical manufacturing, the reference datum is collectively referred to as zero point or zero position. The zero point positioning system is a unique positioning and locking device, which is often used in cooperation with a user platform loaded with a workpiece. The zero point positioning system can keep the zero point unchanged when the workpiece is transferred from one station to another, from one process to another, or from one machine tool to another. In this way, the auxiliary time for re-finding the zero point can be saved, the continuity of the workpiece can be ensured, and the work efficiency can be improved.

[0003] Since the zero point positioning device was born, it has been favored by manufacturing plants all over the world. However, most of the zero point positioning devices on the market use compressed air to loosen the locking mechanism of the zero point positioning device, which requires high stability of the air source. In actual engineering applications, sometimes the air source pressure is insufficient or the air source fails, which can cause the zero point to be unable to be normally loosened. In some harsh processing environments, the cutting fluid or impurities can enter the internal system of the zero point system when the zero point system is working, which can pollute the internal component environment and cause the zero point system to be unable to be normally loosened, resulting in manufacturing production failure. Moreover, the internal structure of the zero point positioning device requiring the air source is complex, and when the device is maintained, the device needs to be disassembled for cleaning and maintenance. The disassembly process is time-consuming and laborious, and after cleaning, the installation precision is required to be high, and improper installation can easily cause the zero point positioning device to malfunction.

[0004] To this end, the patent for invention with publication number CN1059838648B proposes a zero point positioning system without power clamping, which relies on hydraulic injection when loosening; and the utility model patent with publication number CN210281465U proposes a zero point positioning device, which relies on air pressure injection when loosening. The two prior arts still rely on air source or hydraulic pressure to loosen, and are strongly dependent on external energy sources. SUMMARY

[0005] The present application aims to solve the problems of high failure rate, time-consuming and laborious maintenance, etc. of the zero point positioning device relying on air source so far, and to get rid of the constraints of air source, while also achieving rapid positioning and locking of the user platform.

[0006] The technical scheme adopted to achieve the above-mentioned purpose is as follows:

[0007] The utility model provides a kind of mechanical zero point positioning device, including base assembly, top seat component, floating adjustment unit and clamping adjustment unit;The top seat component includes top seat body;The middle of top seat body bottom is provided with recess inner cavity;The side of top seat body is radially provided with the through-hole for installing clamping adjustment unit;Top seat body top is provided with user installation hole, and user installation hole is provided with detachable bolt;The base assembly includes bottom plate and the positioning boss compatible with the recess inner cavity, and positioning boss is fixed in the middle of bottom plate top, and floating adjustment unit is arranged on bottom plate;The axial hole is opened in the axis of positioning boss, and axial hole is cooperated with screw rod, so that positioning boss and top seat component are detachably connected;The side of positioning boss is provided with radial recess corresponding with the through-hole, and clamping adjustment is carried out by clamping adjustment unit.

[0008] Preferably, the recess inner cavity and the positioning boss are both circular table structures.

[0009] Preferably, the through-hole has several, and all through-holes are equidistantly arranged along the circumference of the top seat body;The clamping adjustment unit includes several clamping adjustment mechanisms corresponding to the through-holes one by one.

[0010] Preferably, the clamping adjustment mechanism includes a clamping adjustment rod, a spring, a cylindrical copper pad and a tapered head;The clamping adjustment rod includes a first rod body, and one end of the first rod body is provided with a first threaded rod cap for threaded connection with the through-hole;The spring is coaxially sleeved on the first rod body, one end of the spring is connected to the first threaded rod cap, and the other end of the spring is connected to the tapered head through the cylindrical copper pad.

[0011] Preferably, the radial recess is a tapered structure compatible with the tapered head.

[0012] Preferably, the bottom plate of the base assembly is provided with several fixed connection holes and several floating adjustment holes for installing floating adjustment units along the axial direction, and all fixed connection holes and floating adjustment holes are equidistantly arranged along the circumference of the positioning boss;The fixed connection hole is provided with a fixed connection piece, and the floating adjustment unit includes several floating adjustment mechanisms corresponding to the floating adjustment holes one by one.

[0013] Preferably, the bottom of the top seat component is provided with a recessed ring groove covering all floating adjustment mechanisms.

[0014] Preferably, the floating adjustment mechanism includes a floating block, a floating spring and a floating adjustment rod, and the bottom of the floating block is provided with a blind groove;The floating adjustment rod includes a second rod, and one end of the second rod is provided with a second threaded rod cap for threaded connection with the floating adjustment hole, and the other end of the second rod is inserted into the blind groove;The floating spring is coaxially sleeved on the second rod body, one end of the floating spring is connected to the second threaded rod cap, and the other end of the floating spring is connected to the floating block in the blind groove.

[0015] Preferably, an inner hexagonal hole is arranged at the axial center of the first threaded rod cap and the second threaded rod cap.

[0016] Preferably, a center avoiding hole is arranged at the axial center of the top of the top seat body.

[0017] Advantages of the present application:

[0018] (1) The present application is a pure mechanical mechanism, which does not rely on compressed air, and is stable in function, avoiding the situation that the zero point positioning device locking mechanism cannot be opened due to insufficient air source pressure or air source failure.

[0019] (2) The present application is provided with a clamping adjusting mechanism, which can adjust the clamping force of the zero point positioning device.

[0020] (3) The base mechanism of the present application is provided with an adjusting groove, and the top seat is provided with a center through hole. When the relative positions of the base mechanism and the top seat deviate, the position of the base mechanism can be adjusted very conveniently, so that the base mechanism and the top seat can be effectively matched.

[0021] (4) The base mechanism of the present application is used below the user platform, and is not easy to accumulate oil stains and impurities in relatively harsh machining environment.

[0022] (5) The present application is convenient to disassemble and convenient to replace spare parts during maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is an exploded structural schematic view of a mechanical zero point positioning device of the present application;

[0024] Figure 2 is a front view structural schematic view of a mechanical zero point positioning device of the present application in use state;

[0025] Figure 3 is a top view structural schematic view of a base assembly of the present application;

[0026] Figure 4 is a front view structural schematic view of a top seat assembly of the present application;

[0027] Figure 5 is a front view structural schematic view of a floating adjusting mechanism of the present application;

[0028] Figure 6 is a front view structural schematic view of a clamping adjusting mechanism of the present application.

[0029] In the drawings:

[0030] 1, base assembly; 1.1, base plate; 1.2, fixed connection hole; 1.3, fixed connection; 1.4, floating adjustment hole; 1.5, positioning boss; 1.6, shaft hole; 1.7, screw; 1.8, radial groove; 2, top seat assembly; 2.1, top seat body; 2.2, inner ring groove; 2.3, center avoidance hole; 2.4, groove inner cavity; 2.5, through hole; 2.6, user installation hole; 2.7, detachable bolt; 3, floating adjustment mechanism; 3.1, floating block; 3.2, blind groove; 3.3, floating spring; 3.4, floating adjustment rod; 3.41, second rod; 3.42, second threaded rod cap; 4, clamping adjustment mechanism; 4.1, clamping adjustment rod; 4.11, first rod body; 4.12, first threaded rod cap; 4.2, spring; 4.3, cylindrical copper pad; 4.4, taper head; 5, inner hexagonal hole; 6, user platform; 7, device installation hole; 8, avoidance structure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the application clearer, the technical scheme in the application will be described clearly and completely below in combination with the drawings in the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments.

[0032] Therefore, the following detailed description of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the application without creative labor are within the scope of protection of the application.

[0033] In the description of the application, it should be understood that the terms "center", clamping adjustment unit includes several clamping adjustment mechanisms corresponding to the through hole "up", "down", "left", "right", clamping adjustment unit includes several clamping adjustment mechanisms corresponding to the through hole "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "fitting", "connecting", "fastening", "clamping", "adjusting", "comprising", "consisting of", and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0035] Embodiment 1

[0036] The present embodiment discloses a mechanical zero point positioning device (hereinafter referred to as "zero point positioning device"), as a basic embodiment of the technical solution, as shown in Figure 1 The zero point positioning device comprises a base assembly 1, a top seat assembly 2, a floating adjustment unit, and a clamping adjustment unit.

[0037] The top seat assembly 2 comprises a top seat body 2.1; a recess inner cavity 2.4 is arranged at the middle of the bottom of the top seat body 2.1; a through hole 2.5 for mounting the clamping adjustment unit is radially arranged on the side surface of the top seat body 2.1; a user mounting hole 2.6 is arranged on the top of the top seat body 2.1, and a detachable bolt 2.7 is arranged in the user mounting hole 2.6.

[0038] In addition, the base assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the recess inner cavity 2.4, the positioning boss 1.5 is fixed at the middle of the top of the bottom plate 1.1, and the floating adjustment unit is arranged on the bottom plate 1.1; an axis hole 1.6 is arranged at the axis of the positioning boss 1.5, and the axis hole 1.6 cooperates with a screw rod 1.7 to make the positioning boss 1.5 detachably connected with the top seat assembly 2; a radial recess 1.8 corresponding to the through hole 2.5 is arranged on the side surface of the positioning boss 1.5, and cooperates with the clamping adjustment unit to clamp and adjust.

[0039] In practical application, the top seat assembly 2 is installed on the user platform 6, and the bottom seat assembly 1 is fixed on the machine tool base or the user base, wherein the user platform 6 is provided with a device mounting hole 7, and a detachable bolt 2.7 passes through the device mounting hole 7 and cooperates with the user mounting hole 2.6 to realize the preliminary installation of the top seat assembly 2. Further, in the use process of the zero point positioning device, the posture of the clamping adjusting unit on the top seat assembly 2 and the posture of the floating adjusting unit on the bottom seat assembly 1 are adjusted, the top seat assembly 2 is gradually close to the bottom seat assembly 1 by external force, in this process, the groove inner cavity 2.4 gradually covers the positioning boss 1.5, when the floating adjusting unit contacts the bottom of the top seat assembly 2, the clamping adjusting unit is just clamped into the radial groove 1.8 of the positioning boss 1.5, the top seat assembly 2 is quickly clamped under the action of the clamping adjusting unit, at this time, the positioning boss 1.5 is tightly fitted with the groove inner cavity 2.4, so that the quick positioning and clamping of the user platform 6 are realized, and finally the positioning boss 1.5 and the top seat assembly 2 are further effectively fixed by the cooperation of the screw 1.7 and the shaft hole 1.6, so as to ensure the stability and reliability of the zero point positioning device (the positioning boss 1.5 is tightly fitted with the groove inner cavity 2.4).

[0040] Embodiment 2

[0041] The embodiment discloses a mechanical zero point positioning device, as a preferred embodiment of the technical scheme, as shown in Figure 1 The embodiment discloses a mechanical zero point positioning device, as a preferred embodiment of the technical scheme, as shown in

[0042] The top seat assembly 2 comprises a top seat body 2.1; the middle of the bottom of the top seat body 2.1 is provided with a groove inner cavity 2.4; the side surface of the top seat body 2.1 is provided with a through hole 2.5 for installing a clamping adjusting unit; the top of the top seat body 2.1 is provided with a user mounting hole 2.6, and the user mounting hole 2.6 is provided with a detachable bolt 2.7.

[0043] The bottom seat assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the groove inner cavity 2.4, the positioning boss 1.5 is fixed in the middle of the top of the bottom plate 1.1, specifically, a threaded hole is formed at the shaft center of the bottom plate 1.1, and the bottom plate 1.1 and the positioning boss 1.5 are fixedly connected through the cooperation of the threaded hole and a threaded connecting piece. The floating adjusting unit is arranged on the bottom plate 1.1; the shaft center of the positioning boss 1.5 is provided with a shaft hole 1.6, the shaft hole 1.6 cooperates with a screw 1.7 to detachably connect the positioning boss 1.5 and the top seat assembly 2; the side surface of the positioning boss 1.5 is provided with a radial groove 1.8 corresponding to the through hole 2.5 and cooperating with the clamping adjusting unit to adjust clamping.

[0044] Further, the recess inner cavity 2.4 and the positioning boss 1.5 are both circular table structures. In this way, the recess inner cavity 2.4 and the positioning boss 1.5 have the same non-taperedness, and a faster relative positioning effect can be achieved.

[0045] Embodiment 3

[0046] This embodiment discloses a mechanical zero-point positioning device, as a preferred embodiment of the technical solution, as shown in the figure, comprising a base assembly 1, a top seat assembly 2, a floating adjustment unit and a clamping adjustment unit, specifically: Figure 1

[0047] The top seat assembly 2 comprises a top seat body 2.1; the middle of the bottom of the top seat body 2.1 is provided with a recess inner cavity 2.4; the side surface of the top seat body 2.1 is provided with a through hole 2.5 for installing the clamping adjustment unit in the radial direction; and the top of the top seat body 2.1 is provided with a user installation hole 2.6, and the user installation hole 2.6 is provided with a detachable bolt 2.7.

[0048] The base assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the recess inner cavity 2.4, the positioning boss 1.5 is fixed to the middle of the top of the bottom plate 1.1, and the floating adjustment unit is arranged on the bottom plate 1.1; an axial hole 1.6 is formed at the axial center of the positioning boss 1.5, and the axial hole 1.6 cooperates with a screw rod 1.7 to enable the positioning boss 1.5 to be detachably connected with the top seat assembly 2; a radial recess 1.8 is formed on the side surface of the positioning boss 1.5, corresponding to the through hole 2.5 and cooperating with the clamping adjustment unit to perform clamping adjustment.

[0049] Further, the through hole 2.5 has a plurality of through holes, and all the through holes 2.5 are equidistantly arranged along the circumference of the top seat body 2.1; the clamping adjustment unit comprises a plurality of clamping adjustment mechanisms 4 corresponding to the through holes 2.5.

[0050] In the technical solution, by uniformly arranging a plurality of clamping adjustment mechanisms 4, a multidirectional adjustment space is created, and the effect of uniform clamping adjustment can be achieved.

[0051] Embodiment 4

[0052] This embodiment discloses a mechanical zero-point positioning device, as a preferred embodiment of the technical solution, as shown in the figure, comprising a base assembly 1, a top seat assembly 2, a floating adjustment unit and a clamping adjustment unit, specifically: Figure 1

[0053] ​​The top seat assembly 2 comprises a top seat body 2.1; a recess inner cavity 2.4 is arranged at the middle of the bottom of the top seat body 2.1; a through hole 2.5 for installing a clamping and adjusting unit is radially arranged on the side of the top seat body 2.1; a user installation hole 2.6 is arranged on the top of the top seat body 2.1, and a detachable bolt 2.7 is arranged in the user installation hole 2.6.

[0054] The base assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the recess inner cavity 2.4, the positioning boss 1.5 is fixed at the middle of the top of the bottom plate 1.1, and the floating adjusting unit is arranged on the bottom plate 1.1; an axis hole 1.6 is arranged at the axis of the positioning boss 1.5, and the axis hole 1.6 is matched with a screw rod 1.7 to detachably connect the positioning boss 1.5 and the top seat assembly 2; a radial recess 1.8 is arranged on the side of the positioning boss 1.5, which is matched with the through hole 2.5 and adjusts the clamping by cooperating with the clamping and adjusting unit.

[0055] Further, the recess inner cavity 2.4 and the positioning boss 1.5 are both circular table structures.

[0056] Further, the through hole 2.5 has a plurality of through holes, and all the through holes 2.5 are equidistantly arranged along the circumference of the top seat body 2.1; the clamping and adjusting unit comprises a plurality of clamping and adjusting mechanisms 4 corresponding to the through holes 2.5.

[0057] Further, the clamping and adjusting mechanism 4 comprises a clamping and adjusting rod 4.1, a spring 4.2, a cylindrical copper pad 4.3 and a tapered head 4.4; the clamping and adjusting rod 4.1 comprises a first rod body 4.11, one end of the first rod body 4.11 is provided with a first threaded rod cap 4.12 for threadedly connecting with the through hole 2.5; the spring 4.2 is coaxially sleeved on the first rod body 4.11, one end of the spring 4.2 is connected to the first threaded rod cap 4.12, and the other end of the spring 4.2 is connected to the tapered head 4.4 through the cylindrical copper pad 4.3.

[0058] Further, the radial recess 1.8 is in a tapered structure matched with the tapered head 4.4, which matches the working principle of the clamping and adjusting mechanism 4 in the technical solution and supports the rapid positioning of the tapered head 4.4.

[0059] Further, a center avoiding hole 2.3 is arranged at the axis of the top of the top seat body 2.1.

[0060] In the technical solution, the top seat assembly 2 is an integral part, which can be provided with eight through holes 2.5 for mounting the clamping and adjusting mechanism 4, the through hole 2.5 is a stepped hole structure which can limit the disengagement of the taper head 4.4; four user mounting holes 2.6 can be provided, cooperating with four detachable bolts 2.7, to mount the top seat assembly 2 on the target object (such as the user platform 6); the central position of the central avoiding hole 2.3 is used to lock the screw 1.7 from the central avoiding hole 2.3 when the positioning boss 1.5 is in a free state, and after the effective cooperation of the inner cavity groove and the positioning boss 1.5, the corresponding avoiding structure 8 should also be provided on the target object (such as the user platform 6).

[0061] The high-precision taper head 4.4 is used to transmit the elastic force of the spring member 4.2, and then cooperates with the radial groove 1.8 to realize clamping of the base assembly 1 under the cooperation of multiple clamping and adjusting mechanisms. In the clamping process, one end of the taper head 4.4 is attached to the radial groove 1.8, and the other end is connected to the copper pad; one end of the copper pad is connected to the high-precision taper head 4.4, and the other end is connected to the spring member 4.2; the copper pad transmits the elastic force of the spring member 4.2 to the taper head 4.4; the spring member 4.2 is installed on the optical axis of the clamping and adjusting rod member 4.1 (i.e. the first rod member) to provide elastic force for the high-precision taper head 4.4; the clamping and adjusting rod member 4.1 is T-shaped, provided with a clamping and adjusting rod optical axis (i.e. the first rod member) for installing and guiding the extension spring, and provided with a clamping and adjusting rod threaded end (i.e. the first threaded rod cap 4.12) for threaded connection with the top seat body 2.1. By rotating the clamping and adjusting rod member 4.1, the spring member 4.2 is compressed, the elastic force of the spring member 4.2 is changed, and the clamping force of the high-precision taper head 4.4 on the base mechanism is adjusted.

[0062] Embodiment 5

[0063] The embodiment discloses a mechanical zero-point positioning device, which is a preferred embodiment of the technical solution, as shown in Figure 1 The embodiment discloses a mechanical zero-point positioning device, which is a preferred embodiment of the technical solution, as shown in

[0064] The top seat assembly 2 includes a top seat body 2.1; the middle of the bottom of the top seat body 2.1 is provided with a groove inner cavity 2.4; the side surface of the top seat body 2.1 is provided with a through hole 2.5 for mounting the clamping and adjusting unit in the radial direction; the top of the top seat body 2.1 is provided with a user mounting hole 2.6, and the user mounting hole 2.6 is provided with a detachable bolt 2.7.

[0065] The base assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the groove inner cavity 2.4, the positioning boss 1.5 is fixed in the middle of the top of the bottom plate 1.1, and the floating adjustment unit is arranged on the bottom plate 1.1; an axial hole 1.6 is arranged at the center of the positioning boss 1.5, and the axial hole 1.6 is matched with a screw rod 1.7 to enable the positioning boss 1.5 to be detachably connected with the top seat assembly 2; a radial groove 1.8 is arranged on the side of the positioning boss 1.5, corresponding to the through hole 2.5 and matched with the clamping adjustment unit for clamping adjustment.

[0066] Further, a plurality of fixed connection holes 1.2 and a plurality of floating adjustment holes 1.4 for installing the floating adjustment unit are arranged on the bottom plate 1.1 of the base assembly 1 in the axial direction, and all the fixed connection holes 1.2 and the floating adjustment holes 1.4 are arranged at equal intervals along the circumference of the positioning boss 1.5; a fixed connecting piece 1.3 is arranged in the fixed connection hole 1.2, and the floating adjustment unit comprises a plurality of floating adjustment mechanisms 3 corresponding to the floating adjustment holes 1.4. In the technical solution, four fixed connection holes 1.2 and four floating adjustment holes 1.4 are arranged, the fixed connection hole 1.2 is matched with the fixed connecting piece 1.3, and the base assembly 1 is installed on the target object (such as a machine tool base).

[0067] The technical solution uniformly arranges a plurality of floating adjustment mechanisms 3 to realize uniform contact and support between the base assembly 1 and the top seat assembly 2, which is beneficial to the quick positioning and connection of the base assembly 1 and the top seat assembly 2.

[0068] Embodiment 6

[0069] The embodiment discloses a mechanical zero-point positioning device, which is a preferred embodiment of the technical solution, as shown in Figure 1 The embodiment discloses a mechanical zero-point positioning device, which is a preferred embodiment of the technical solution, as shown in

[0070] The top seat assembly 2 comprises a top seat body 2.1; a groove inner cavity 2.4 is arranged in the middle of the bottom of the top seat body 2.1; a through hole 2.5 for installing the clamping adjustment unit is arranged on the side of the top seat body 2.1 in the radial direction; a user installation hole 2.6 is arranged on the top of the top seat body 2.1, and a detachable bolt 2.7 is arranged in the user installation hole 2.6.

[0071] The base assembly 1 comprises a bottom plate 1.1 and a positioning boss 1.5 matched with the groove inner cavity 2.4, the positioning boss 1.5 is fixed in the middle of the top of the bottom plate 1.1, the floating adjustment unit is arranged on the bottom plate 1.1, an axial hole 1.6 is arranged at the center of the positioning boss 1.5, the axial hole 1.6 is matched with a screw rod 1.7, so that the positioning boss 1.5 is detachably connected with the top seat assembly 2, a radial groove 1.8 is arranged on the side of the positioning boss 1.5, which corresponds to the through hole 2.5 and is matched with the clamping adjustment unit to realize clamping adjustment.

[0072] Further, a plurality of fixed connection holes 1.2 and a plurality of floating adjustment holes 1.4 for installing the floating adjustment unit are arranged on the bottom plate 1.1 of the base assembly 1 in the axial direction, and all the fixed connection holes 1.2 and the floating adjustment holes 1.4 are arranged at equal intervals along the circumference of the positioning boss 1.5, a fixed connecting piece 1.3 is arranged in the fixed connection hole 1.2, and the floating adjustment unit comprises a plurality of floating adjustment mechanisms 3 corresponding to the floating adjustment holes 1.4.

[0073] Further, the bottom of the top seat assembly 2 is provided with a recessed ring groove 2.2 covering all the floating adjustment mechanisms 3.

[0074] Further, the floating adjustment mechanism 3 comprises a floating block 3.1, a floating spring 3.3 and a floating adjustment rod 3.4, a blind groove 3.2 is arranged at the bottom of the floating block 3.1, the floating adjustment rod 3.4 comprises a second rod 3.41, one end of the second rod 3.41 is provided with a second threaded rod cap 3.42 for threaded connection with the floating adjustment hole 1.4, the other end of the second rod 3.41 is inserted into the blind groove 3.2, the floating spring 3.3 is coaxially sleeved on the second rod body, one end of the floating spring 3.3 is connected to the second threaded rod cap 3.42, and the other end of the floating spring 3.3 is connected to the floating block 3.1 in the blind groove 3.2.

[0075] In the technical solution, during the connection of the top seat assembly 2 and the base assembly 1, the top of the floating block 3.1 is in contact with the recessed ring groove 2.2 at the bottom of the top seat body 2.1, the floating spring 3.3 provides an upward elastic force for the floating block 3.1, and the size of the elastic force is realized by rotating the floating adjustment rod 3.4. The floating adjustment mechanism 3 is installed on the bottom plate 1.1, the floating spring 3.3 after adjustment by the floating adjustment rod 3.4 provides an upward force for the floating block 3.1, so that the upper surface of the floating block 3.1 is effectively attached to the recessed ring groove 2.2, and the top seat body 2.1 is provided with positioning support, and when the recessed ring groove 2.2 is locally deformed, the floating adjustment mechanism 3 can also effectively eliminate the deformation.

[0076] An inner hexagonal hole 5 can be provided on the floating adjustment rod 3.4. During assembly, the floating block 3.1 is first installed in the floating adjustment hole 1.4, the floating spring 3.3 is installed on the floating adjustment rod 3.4, and then the floating spring 3.3 is embedded in the blind groove 3.2 of the floating block 3.1. An inner hexagonal wrench is inserted into the inner hexagonal hole 5, and the inner hexagonal wrench is rotated to drive the floating adjustment rod 3.4 to rotate. Based on the threaded connection structure between the second threaded rod cap 3.42 and the floating adjustment hole 1.4, the floating spring 3.3 is compressed upward. After the floating block 3.1 is attached to the stepped surface in the floating adjustment hole 1.4, the floating adjustment rod 3.4 is continuously rotated upward to ensure that the lower end surface of the floating adjustment rod 3.4 is embedded in the floating adjustment hole 1.4. According to user requirements, the floating adjustment rod 3.4 can be further rotated to compress the floating spring 3.3 to adjust the appropriate spring force to provide support for the top seat assembly 2.

[0077] Embodiment 7

[0078] The embodiment discloses a mechanical zero-point positioning device, which is a preferred embodiment of the technical solution, as shown in the accompanying drawings, Figure 1 The device comprises a base assembly 1, a top seat assembly 2, a floating adjustment unit, and a clamping adjustment unit, specifically:

[0079] The top seat assembly 2 comprises a top seat body 2.1, a recess inner cavity 2.4 is arranged at the center of the bottom of the top seat body 2.1, a through hole 2.5 for installing the clamping adjustment unit is radially arranged on the side surface of the top seat body 2.1, and a user installation hole 2.6 is arranged on the top of the top seat body 2.1, and a detachable bolt 2.7 is arranged in the user installation hole 2.6.

[0080] The base assembly 1 comprises a base plate 1.1 and a positioning boss 1.5 matched with the recess inner cavity 2.4, the positioning boss 1.5 is fixed at the center of the top of the base plate 1.1, and the floating adjustment unit is arranged on the base plate 1.1; an axis hole 1.6 is arranged at the axis of the positioning boss 1.5, the axis hole 1.6 is matched with a screw rod 1.7 to enable the positioning boss 1.5 to be detachably connected with the top seat assembly 2; a radial recess 1.8 corresponding to the through hole 2.5 is arranged on the side surface of the positioning boss 1.5, and the radial recess 1.8 is matched with the clamping adjustment unit to perform clamping adjustment.

[0081] Further, the recess inner cavity 2.4 and the positioning boss 1.5 are both circular table structures.

[0082] Further, the through hole 2.5 has a plurality of through holes, and all the through holes 2.5 are equidistantly arranged along the circumference of the top seat body 2.1; the clamping adjustment unit comprises a plurality of clamping adjustment mechanisms 4 corresponding to the through holes 2.5.

[0083] Further, the clamping adjusting mechanism 4 comprises a clamping adjusting rod 4.1, a spring 4.2, a cylindrical copper pad 4.3 and a tapered head 4.4; the clamping adjusting rod 4.1 comprises a first rod body 4.11, one end of the first rod body 4.11 is provided with a first threaded rod cap 4.12 for threaded connection with the through hole 2.5; the spring 4.2 is coaxially sleeved on the first rod body 4.11, one end of the spring 4.2 is connected to the first threaded rod cap 4.12, and the other end of the spring 4.2 is connected to the tapered head 4.4 through the cylindrical copper pad 4.3.

[0084] Further, the radial groove 1.8 is in a tapered structure matched with the tapered head 4.4.

[0085] Further, the bottom plate 1.1 of the base assembly 1 is provided with a plurality of fixed connection holes 1.2 and a plurality of floating adjustment holes 1.4 for installing floating adjustment units in the axial direction, and all the fixed connection holes 1.2 and the floating adjustment holes 1.4 are arranged at equal intervals along the circumferential direction of the positioning boss 1.5; the fixed connection holes 1.2 are provided with fixed connection pieces 1.3, and the floating adjustment unit comprises a plurality of floating adjustment mechanisms 3 corresponding to the floating adjustment holes 1.4.

[0086] Further, the bottom of the top seat assembly 2 is provided with a recessed ring groove 2.2 covering all the floating adjustment mechanisms 3.

[0087] Further, the floating adjustment mechanism 3 comprises a floating block 3.1, a floating spring 3.3 and a floating adjusting rod 3.4, and the bottom of the floating block 3.1 is provided with a blind groove 3.2; the floating adjusting rod 3.4 comprises a second rod 3.41, one end of the second rod 3.41 is provided with a second threaded rod cap 3.42 for threaded connection with the floating adjustment hole 1.4, and the other end of the second rod 3.41 is inserted into the blind groove 3.2; the floating spring 3.3 is coaxially sleeved on the second rod body, one end of the floating spring 3.3 is connected to the second threaded rod cap 3.42, and the other end of the floating spring 3.3 is connected to the floating block 3.1 in the blind groove 3.2.

[0088] Further, the axial center of the first threaded rod cap 4.12 and the second threaded rod cap 3.42 is provided with an internal hexagonal hole 5.

[0089] Further, the axial center of the top of the top seat body 2.1 is provided with a center avoiding hole 2.3.

[0090] In practical application, the top seat assembly 2 is installed on the user platform 6, and the bottom seat assembly 1 is fixed on the machine tool base or the user base. Among them, the device mounting hole 7 is arranged on the user platform 6, and the detachable bolt 2.7 passes through the device mounting hole 7 and cooperates with the user mounting hole 2.6 to realize the preliminary installation of the top seat assembly 2; in addition, the fixed connecting piece 1.3 cooperates with the fixed connecting hole 1.2 to fix the bottom seat assembly 1 on the machine tool base or the user base.

[0091] In the use process of the zero positioning device, the posture of all clamping adjustment mechanisms 4 on the top seat assembly 2 (the radial position of the clamping adjustment mechanism 4 on the top seat assembly 2) and the posture of the floating adjustment mechanism 3 on the bottom seat assembly 1 (the height position of the floating adjustment mechanism 3 on the bottom seat assembly 1) are adjusted. Through external force, the top seat assembly 2 with the clamping adjustment mechanism 4 gradually approaches the fixed bottom seat assembly 1 until the taper head 4.4 of the clamping adjustment mechanism 4 contacts the positioning boss 1.5, at which time the taper head 4.4 is stressed, and the taper head 4.4 retracts based on the extension condition of the spring member 4.2; continue to control the top seat assembly 2 to approach the bottom seat assembly 1 until the positioning boss 1.5 is tightly fitted with the recess inner cavity 2.4, and the inner recess groove 2.2 at the bottom of the top seat body 2.1 is effectively fitted with the floating block 3.1 of the floating adjustment mechanism 3, at which time the radial groove 1.8 on the side of the positioning boss 1.5 is coaxial with the through hole 2.5 on the top seat body 2.1, so that the taper head 4.4 of the clamping adjustment mechanism 4 is no longer stressed, so that the taper head 4.4 is ejected under the action of the spring member 4.2 and effectively fitted with the groove surface of the radial groove 1.8. As shown in Figure 1 The technical scheme is provided with eight uniformly arranged clamping adjustment mechanisms 4, and under the mutual restraint of the eight clamping adjustment mechanisms 4, the taper head 4.4 of the eight clamping adjustment mechanisms 4 always maintains effective fitting with the groove surface of the corresponding radial groove 1.8, so as to achieve the effect of rapid positioning and clamping, and further realize the rapid positioning and clamping of the user platform 6.

[0092] It should be noted that the technical scheme can be assembled and used according to the following steps:

[0093] Step one, install the floating adjustment mechanism 3 on the bottom plate 1.1, ensure that the lower end surface of the floating adjustment rod 3.4 is sunk into the floating adjustment hole 1.4, and ensure that it does not interfere with the fixed installation of the bottom plate 1.1;

[0094] Step two, fix the bottom plate 1.1 at the position where the user wants to fix, and then fix the positioning boss 1.5 on the bottom plate 1.1 through the screw 1.7;

[0095] Step three, install the eight clamping adjustment mechanisms 4 in the through hole 2.5 of the top seat body 2.1, adjust the position of the clamping adjustment rod 4.1 in the through hole 2.5, and then adjust the spring member 4.2 to exert appropriate spring force.

[0096] Step four, fix the top base body 2.1 on the user platform 6 by screw rod 1.7;

[0097] Step five, move the top base assembly 2 to the top of the bottom base assembly 1, move the user platform 6 downward until the conical head 4.4 is embedded in the radial groove 1.8, at this time the inner recessed ring groove 2.2 at the bottom of the top base body 2.1 is in contact with the top surface of the floating block 3.1, and the inner cavity recess is effectively in contact with the positioning boss 1.5.

[0098] After the above five steps are implemented, the quick positioning and clamping of the user platform 6 are realized.

Claims

1. A mechanical zero positioning device, characterized by: The base assembly (1), the top base assembly (2), the floating adjustment unit and the clamping adjustment unit are included. The top base assembly (2) includes a top base body (2.1); the middle of the bottom of the top base body (2.1) is provided with a recess inner cavity (2.4); the side of the top base body (2.1) is radially provided with a plurality of through holes (2.5) for installing the clamping adjustment unit, and all the through holes (2.5) are equidistantly arranged along the circumference of the top base body (2.1); the top of the top base body (2.1) is provided with a user installation hole (2.6), and the user installation hole (2.6) is provided with a detachable bolt (2.7); The base assembly (1) includes a bottom plate (1.1) and a positioning boss (1.5) matched with the recess inner cavity (2.4), the positioning boss (1.5) is fixed in the middle of the top of the bottom plate (1.1), and the floating adjustment unit is arranged on the bottom plate (1.1); the center of the positioning boss (1.5) is provided with an axis hole (1.6), and the axis hole (1.6) is matched with a screw rod (1.7) to detachably connect the positioning boss (1.5) and the top base assembly (2); the side of the positioning boss (1.5) is provided with a radial recess (1.8) corresponding to the through hole (2.5) and matched with the clamping adjustment unit for clamping adjustment; The bottom plate (1.1) of the base assembly (1) is axially provided with a plurality of fixed connection holes (1.2) and a plurality of floating adjustment holes (1.4) for installing the floating adjustment unit, and all the fixed connection holes (1.2) and the floating adjustment holes (1.4) are equidistantly arranged along the circumference of the positioning boss (1.5); the fixed connection holes (1.2) are provided with fixed connection pieces (1.3), and the floating adjustment unit includes a plurality of floating adjustment mechanisms (3) corresponding to the floating adjustment holes (1.4) one by one; The floating adjustment mechanism (3) includes a floating block (3.1), a floating spring (3.3) and a floating adjustment rod (3.4), and the bottom of the floating block (3.1) is provided with a blind groove (3.2); the floating adjustment rod (3.4) includes a second rod (3.41), one end of the second rod (3.41) is provided with a second threaded rod cap (3.42) for threadedly connecting with the floating adjustment hole (1.4), and the other end of the second rod (3.41) is inserted into the blind groove (3.2); the floating spring (3.3) is coaxially sleeved on the second rod body, one end of the floating spring (3.3) is connected to the second threaded rod cap (3.42), and the other end of the floating spring (3.3) is connected to the floating block (3.1) in the blind groove (3.2). The clamping adjusting unit comprises a plurality of clamping adjusting mechanisms (4) corresponding to the through holes (2.5), and the clamping adjusting mechanism (4) comprises a clamping adjusting rod (4.1), a spring (4.2), a cylindrical copper pad (4.3) and a taper head (4.4); the clamping adjusting rod (4.1) comprises a first rod body (4.11), and one end of the first rod body (4.11) is provided with a first threaded rod cap (4.12) for being threadedly connected with the through hole (2.5); the spring (4.2) is coaxially sleeved on the first rod body (4.11), and one end of the spring (4.2) is connected to the first threaded rod cap (4.12), and the other end of the spring (4.2) is connected to the taper head (4.4) through the cylindrical copper pad (4.3).

2. A mechanical zero positioning device as claimed in claim 1, characterized in that: The recess inner cavity (2.4) and the positioning boss (1.5) are both circular table structures.

3. The mechanical zero positioning device of claim 1, wherein: The radial groove (1.8) is a tapered structure matched with the taper head (4.4).

4. The mechanical zero positioning device of claim 1, wherein: The bottom of the top seat assembly (2) is provided with a recessed ring groove (2.2) covering all the floating adjusting mechanisms (3).

5. The mechanical zero positioning device of claim 1, wherein: Hexagonal holes (5) are arranged at the shaft centers of the first threaded rod cap (4.12) and the second threaded rod cap (3.42).

6. The mechanical zero positioning device of claim 1, wherein: A center avoiding hole (2.3) is arranged at the shaft center of the top of the top seat body (2.1).

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