A torsion-resistant zero-point positioning quick-change device

Abstract

The utility model discloses a torsion-resistant zero-point positioning quick-change device, which belongs to the technical field of zero-point positioning quick-change. It comprises a male end and a female end, which can be quickly connected and locked or released along the axial direction, and an anti-torsion structure is arranged between the male end and the female end, and the anti-torsion structure limits the circumferential relative rotation of the male end and the female end. The utility model solves the technical problem that the traditional zero-point quick-change device cannot resist torsion.

Description

Technical Field

[0001] The utility model relates to the technical field of zero-point positioning quick-change, in particular to an anti-torsion zero-point positioning quick-change device. Background Art

[0002] The market demand for general precision and large load zero-point quick-change systems is increasing, especially in body-in-white welding fixtures and positioner fixtures. Zero-point quick-change can help users solve the problem of fixture decoupling and achieve flexible replacement. Products on the market are not resistant to axial torque, so when the load of a single set of zero-point devices is met, two sets are still needed to be used together, which not only increases the cost of use, but also makes it impossible to further simplify and lighten the structure of the moving component. For example, Publication No. discloses an enhanced zero-point quick-change device, the shell of the quick-change device is composed of an upper shell, a locking seat, a cylinder and a back cover; the locking seat separates the interior of the quick-change device into an upper chamber and a lower chamber; a rivet locking chamber for locking the rivet is provided in the center of the upper shell, and a plurality of locking pin holes are arranged around the side wall of the upper shell, and a movable locking pin is arranged in the locking pin hole, a first piston is arranged in the upper chamber, and a first spring is arranged between the first piston and the locking seat; a second piston is arranged in the lower chamber, and a second spring is arranged between the second piston and the back cover; a steel ball is arranged on the side wall of the locking seat, and a plurality of air inlet holes are arranged on the shell, and the air inlet holes are connected to the upper chamber and the lower chamber respectively. The present invention discloses an enhanced zero-point quick-change device, which realizes the locking of the rivet by two sets of power devices, which greatly improves the stability of the locking of the rivet. In order to cope with the above problems, it is necessary to develop a zero-point quick-change device that can effectively resist axial torque. Summary of the invention

[0003] The purpose of the utility model is to provide a torsion-resistant zero-point positioning quick-change device in view of the above problems, so as to solve the technical problem that the traditional zero-point quick-change device cannot resist torsion.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A torsion-resistant zero-point positioning quick-change device comprises a male end and a female end. The male end and the female end can be quickly connected and locked or released along the axial direction. An anti-torsion structure is arranged between the male end and the female end. The anti-torsion structure limits the circumferential relative rotation of the male end and the female end.

[0006] Furthermore, the anti-torsion structure includes a protrusion and a recessed portion with corresponding contours, the protrusion is arranged on the male end, and the recessed portion is arranged on the female end; when the male end and the female end are docked and locked, the protrusion is inserted into the recessed portion.

[0007] Furthermore, the anti-torsion structure includes a protrusion and a recessed portion with corresponding contours, the protrusion is arranged on the female end, and the recessed portion is arranged on the male end; when the male end and the female end are docked and locked, the protrusion is inserted into the recessed portion.

[0008] Furthermore, the outer side wall of the raised portion is provided with an inclined surface for facilitating mold drafting.

[0009] Furthermore, the structure of the protrusion is such that the outer contour of the cross section perpendicular to the central axis of the male end or the female end is not a circle with the center on the central axis of the male end or the female end.

[0010] Furthermore, the cross section of the raised portion is a regular polygon.

[0011] Furthermore, the female end includes a shell, a movable column, a plurality of steel balls and a spring, a pneumatic cavity is provided at the lower part of the shell, an insertion end is provided at the upper part of the shell, a movable cavity is provided at the upper part of the shell, the lower end of the movable column is slidably mounted on the pneumatic cavity, a first sealing ring is provided at the lower end of the movable column, the first sealing ring divides the pneumatic cavity into a locking cavity and a releasing cavity, a locking air port connected to the locking cavity is provided at the outer periphery of the shell, and a releasing air port connected to the releasing cavity is provided at the outer periphery of the shell; a plurality of steel balls are movably mounted on the side wall of the active cavity, the upper end of the movable column is located in the active cavity, the upper end of the spring abuts against the movable column, and the lower end abuts against the bottom surface of the pneumatic cavity; a socket matching the insertion end is provided on the male end, and an annular groove is provided on the inner peripheral wall of the socket to snap into the steel ball; the upward movement of the movable column can push the steel ball part out of the outer wall of the active cavity and make the steel ball part snap into the annular groove to limit the axial movement of the male end and the female end.

[0012] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. When the utility model is used, the male end and the female end are docked and locked. The anti-torsion structure can limit the circumferential rotation of the male end and the female end, so that the zero-point positioning device can achieve single-point load-bearing and anti-torsion, solving the technical problem that the traditional zero-point quick-change device cannot resist torsion, thereby simplifying the fixture design, promoting the lightweight and cost optimization of the production line, and meeting the dual needs of modern intelligent manufacturing for flexibility and efficiency.

[0014] 2. The anti-torsion structure of the utility model is provided with a raised portion and a recessed portion, and the structure is simple and convenient. By providing a draft bevel, the raised portion can be easily guided and inserted into the recessed portion, and the male end and the female end can be easily separated to prevent jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the utility model (axially unlocked state);

[0017] Figure 3 This is a three-dimensional diagram of the female end of the utility model (axially unlocked state);

[0018] Figure 4 This is a three-dimensional diagram of the male end of the utility model.

[0019] In the accompanying drawings, 1-male end, 2-female end, 11-recess, 12-jack, 13-annular groove, 21-raised portion, 22-housing, 23-active column, 24-steel ball, 25-spring, 26-pneumatic cavity, 27-active cavity, 28-first sealing ring, 29-locking air port, 210-releasing air port, 211-second sealing ring, 212-insertion end, 213-locking infrared sensor, 214-releasing infrared sensor. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described below with reference to the accompanying drawings.

[0021] In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] See also Figures 1 to 4 A torsion-resistant zero-point positioning quick-change device includes a male end 1 and a female end 2. The male end 1 and the female end 2 can be quickly connected and locked or released along the axial direction. An anti-torsion structure is arranged between the male end 1 and the female end 2. The anti-torsion structure limits the circumferential relative rotation of the male end 1 and the female end 2.

[0025] In this embodiment, the female end 2 includes a shell 22, a movable column 23, a plurality of steel balls 24 and a spring 25. A pneumatic cavity 26 is provided at the lower part of the shell 22, an insertion end 212 is provided at the upper part of the shell 22, and an active cavity 27 is provided at the upper part of the shell 22. The lower end of the movable column 23 is slidably mounted on the pneumatic cavity 26, and a first sealing ring 28 is installed at the lower end of the movable column 23. The first sealing ring 28 divides the pneumatic cavity 26 into a locking cavity and a release cavity. A locking air port 29 connected to the locking cavity is provided on the outer periphery of the shell 22, and a locking air port 29 connected to the release cavity is provided on the outer periphery of the shell 22. The movable cavity 27 is provided with a plurality of steel balls 24 movably mounted on the side wall of the movable cavity 27. The upper end of the movable column 23 is located in the movable cavity 27. The upper end of the spring 25 abuts against the movable column 23, and the lower end abuts against the bottom surface of the pneumatic cavity 26. The male end 1 is provided with a socket 12 matching the insertion end 212, and the inner peripheral wall of the socket 12 is provided with an annular groove 13 that can be inserted into the steel ball 24. The movable column 23 moves upward to partially push the steel ball 24 out of the outer wall of the movable cavity 27 and partially clamp the steel ball 24 in the annular groove 13 to limit the axial movement of the male end 1 and the female end 2. The lower part of the movable cavity 27 is provided with a second sealing ring 211, and the inner wall of the second sealing ring 211 is sealed and connected with the outer wall of the movable column 23, so that the movable cavity 27 and the pneumatic cavity 26 are separated. The lower part of the housing 22 is provided with a locking infrared sensor 213 and a releasing infrared sensor 214. One end of the locking infrared sensor 213 penetrates into the upper part of the pneumatic cavity 26, and one end of the releasing infrared sensor 214 penetrates into the lower part of the pneumatic cavity 26. When the movable column 23 is in the upper position and the female end 2 and the male end 1 are axially relatively locked, the locking infrared sensor 213 can be triggered. When the movable column 23 is in the lower position and the female end 2 and the male end 1 are axially relatively loosened, the locking infrared sensor 213 can be triggered.

[0026] In this embodiment, the anti-torsion structure includes a protrusion 21 and a recessed portion 11 with corresponding contours. The protrusion 21 is arranged on the male end 1, and the recessed portion 11 is arranged on the female end 2; when the male end 1 and the female end 2 are docked and locked, the protrusion 21 is inserted into the recessed portion 11. Specifically, the protrusion 21 is arranged around the outer periphery of the insertion end 212, and the recessed portion 11 is arranged on the outer periphery of the lower end of the insertion hole 12. The outer wall of the protrusion 21 is provided with a draft-convenient chamfer. The anti-torsion structure is provided with the protrusion 21 and the recessed portion 11, and the structure is simple and convenient. By providing the draft-concave surface, the protrusion 21 can be easily inserted into the recessed portion 11, and the male end 1 and the female end 2 can be easily separated and prevented from getting stuck.

[0027] In this embodiment, the outer contour of the cross section of the protrusion 21 perpendicular to the central axis of the male end 1 or the female end 2 is not a circle with the center on the central axis of the male end 1 or the female end 2. The cross section of the protrusion 21 in this embodiment is a regular polygon, specifically a hexagon.

[0028] When in use, the movable column 23 is pushed up and down by gas to release the lock of the male end 1. When the male end 1 and the female end 2 are docked and locked, the hexagonal anti-torsion structure can limit the circumferential rotation of the male end 1 and the female end 2, so that the zero-point positioning device can achieve single-point load-bearing and anti-torsion, which is beneficial to simplify the fixture design in machine tool processing, promote the lightweight and cost optimization of the production line, and meet the dual needs of modern intelligent manufacturing for flexibility and efficiency.

[0029] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A torsion-resistant zero-point positioning quick-change device, comprising a male end and a female end, wherein the male end and the female end can be quickly docked and locked or released along the axial direction, characterized in that: An anti-torsion structure is provided between the male end and the female end, and the anti-torsion structure limits the circumferential relative rotation of the male end and the female end.

2. The anti-torsion zero point positioning quick-change device according to claim 1, characterized in that: The anti-torsion structure comprises a protrusion and a recessed portion with corresponding contours, wherein the protrusion is arranged on the female end and the recessed portion is arranged on the male end; when the male end and the female end are docked and locked, the protrusion is inserted into the recessed portion.

3. The anti-torsion zero-point positioning quick-change device according to claim 2, characterized in that: The outer side wall of the protrusion is provided with an inclined surface for easy mold drafting.

4. The anti-torsion zero-point positioning quick-change device according to claim 2, characterized in that: The structure of the protrusion is such that the outer contour of the cross section perpendicular to the central axis of the male end or the female end is not a circle with the center on the central axis of the male end or the female end.

5. The anti-torsion zero point positioning quick-change device according to claim 4, characterized in that: The cross section of the raised portion is a regular polygon.

6. The anti-torsion zero-point positioning quick-change device according to claim 1, characterized in that: The female end comprises a shell, a movable column, a plurality of steel balls and a spring, a pneumatic cavity is arranged at the lower part of the shell, an insertion end is arranged at the upper part of the shell, a movable cavity is arranged at the upper part of the shell, the lower end of the movable column is slidably mounted on the pneumatic cavity up and down, a first sealing ring is arranged at the lower end of the movable column, the first sealing ring divides the pneumatic cavity into a locking cavity and a releasing cavity, a locking air port connected to the locking cavity is arranged at the outer periphery of the shell, and a releasing air port connected to the releasing cavity is arranged at the outer periphery of the shell; a plurality of steel balls are movably mounted on the side wall of the active cavity, the upper end of the movable column is located in the active cavity, the upper end of the spring abuts against the movable column, and the lower end abuts against the bottom surface of the pneumatic cavity; a socket matching the insertion end is arranged on the male end, and an annular groove which can be inserted into the steel ball is arranged on the inner peripheral wall of the socket; the upward movement of the movable column can push the steel ball part out of the outer wall of the active cavity and make the steel ball part be stuck in the annular groove to limit the axial movement of the male end and the female end.

7. The anti-torsion zero-point positioning quick-change device according to claim 6, characterized in that: A locking infrared sensor and a releasing infrared sensor are arranged at the lower part of the shell, one end of the locking infrared sensor penetrates into the upper part of the pneumatic cavity, and one end of the releasing infrared sensor penetrates into the lower part of the pneumatic cavity.

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