Fixture positioning turntable

Abstract

The present invention relates to the technical field of body-in-white clamp positioning equipment, and in particular to a clamp positioning turntable. The above-mentioned clamp positioning turntable includes a turntable base plate and a support seat; wherein a first limiter is fixed to the bottom of the turntable base plate, and the top of the support seat abuts against the bottom of the first limiter to support the turntable base plate; a second limiter is fixed to the support seat, and the second limiter can abut against the first limiter when the turntable base plate is in the clamp switching position, and the second limiter is used to limit the horizontal movement of the first limiter. The clamp positioning turntable provided by the present invention, when the center of gravity of the clamp on the turntable base plate deviates from the center of the turntable or the turntable is impacted during the process of switching the clamp, the second limiter can work together with the first limiter to limit the position of the turntable base plate in the X, Y and Z directions, thereby ensuring the positioning accuracy of the turntable and improving the welding quality of the body-in-white.

Description

Technical Field

[0001] The invention relates to the technical field of body-in-white fixture positioning equipment, and in particular to a fixture positioning turntable. Background Art

[0002] As China's automobile industry matures, major automobile companies are paying more and more attention to the welding quality of the body-in-white. Generally, the fixture that fixes the body-in-white is fixed to a turntable to facilitate welding of the body-in-white.

[0003] At present, the turntables used by major OEMs generally use servo electrodes to drive the turntable baseplate to rotate, and the welding fixture is fixed on the turntable baseplate. In the case of a larger turntable baseplate, generally only 2-4 Z-direction (vertical direction) supports are added, and there are no X-direction and Y-direction (two mutually perpendicular horizontal directions) limits. During the long-term use of the turntable, if the center of gravity of the fixture on the turntable baseplate deviates from the center of the turntable or the turntable is impacted, it will affect the positioning accuracy of the turntable, and then affect the welding quality of the body-in-white.

[0004] In summary, how to overcome the above-mentioned defects of the existing fixture positioning turntable is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The object of the present invention is to provide a fixture positioning turntable to alleviate the technical problem that the fixture positioning turntable in the prior art has poor positioning accuracy and affects the welding quality of the body-in-white.

[0006] The fixture positioning turntable provided by the present invention comprises a turntable base plate and a supporting seat.

[0007] Wherein, a first limiting member is fixed to the bottom of the turntable substrate, and the top of the support seat abuts against the bottom of the first limiting member to support the turntable substrate.

[0008] A second position-limiting member is fixed on the support seat, and the second position-limiting member can abut against the first position-limiting member when the turntable substrate is in the clamp switching position, and the second position-limiting member is used to limit the movement of the first position-limiting member in the horizontal direction.

[0009] Preferably, as an implementation method, the first limiting member is provided with an arc surface coaxial with the turntable substrate, the second limiting member is provided with a limiting portion, and the limiting portion on the second limiting member can move along the arc surface on the first limiting member.

[0010] Preferably, as an implementable embodiment, the limiting portion on the second limiting member is a guide wheel, and the guide wheel can roll along the arc surface on the first limiting member.

[0011] Preferably, as an implementation mode, there are multiple support seats, multiple first limit members and multiple second limit members, and multiple first limit members correspond one-to-one to multiple support seats, and each first limit member is fixed on the corresponding support seat; multiple second limit members correspond one-to-one to multiple first limit members, and each of the first limit members is provided with an arc surface, and each of the second limit members is provided with the limiting portion, and the limiting portions on the multiple second limit members can respectively move along the arc surface on the corresponding first limit member.

[0012] Preferably, as an implementable embodiment, a plurality of the first position-limiting members are grouped in pairs, and the two first position-limiting members in each group of the first position-limiting members are subjected to opposite pressures from the second position-limiting member.

[0013] Preferably, as an implementable embodiment, the plurality of support seats are all located on a first circular ring, and the center of the first circular ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limiting member are all located on the same cylindrical surface.

[0014] Preferably, as an implementation method, the multiple support seats include multiple first support seats and multiple second support seats, the multiple first support seats are all located on the second ring, the center of the second ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limit members fixed on the first support seats are all located on the same cylindrical surface; the multiple second support seats are all located on the third ring, the center of the third ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limit members fixed on the second support seats are all located on the same cylindrical surface, and the radius of the second ring is smaller than the radius of the third ring.

[0015] Preferably, as an implementable embodiment, the bottom of the first limiting member is a plane, and a rolling member is installed on the support seat, and the rolling member can roll along the bottom plane of the first limiting member when abutting against the bottom of the first limiting member.

[0016] Preferably, as an implementable embodiment, the support seat includes a fixed seat and a movable seat, there is a gap between the fixed seat and the movable seat, and a plurality of leveling bolts are arranged between the movable seat and the fixed seat, and the plurality of leveling bolts are respectively connected to the movable seat and the fixed seat.

[0017] Preferably, as an implementation method, a bottom plate portion is provided at the bottom of the movable seat, and a plurality of limit blocks are provided at the top of the fixed seat, the plurality of limit blocks surround the bottom plate portion at the bottom of the movable seat, and the plurality of limit blocks are all abutted against the edge of the bottom plate portion of the movable seat.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The fixture positioning turntable provided by the present invention is mainly composed of a turntable base plate and a support seat. A first limit piece is fixed at the bottom of the turntable base plate, and the bottom of the first limit piece is abutted against the top of the support seat, so that the support seat can support the turntable base plate. In this way, the support seat can limit the Z-direction (vertical direction) position of the turntable base plate. A second limit piece is fixed at the top of the support seat, and the position of the first limit piece is set so that it can abut against the second limit piece when the fixture is switched. Thus, the second limit piece can limit the horizontal movement of the first limit piece, that is, the second limit piece can limit the X-direction and Y-direction (two mutually perpendicular horizontal directions) positions of the turntable base plate.

[0020] Therefore, for the fixture positioning turntable provided by the present invention, when the center of gravity of the fixture on the turntable substrate deviates from the center of the turntable or the turntable is impacted during the process of switching the fixture, the second limit member can work together with the first limit member to limit the position of the turntable substrate in the X, Y and Z directions, thereby ensuring the positioning accuracy of the turntable and improving the welding quality of the body in white. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the front view structure of a turntable provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a turntable provided in an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0025] Figure 4 A schematic diagram of the assembly structure of the support base and the second limiting member provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the assembly structure of the support base and the second limit member from another viewing angle provided in an embodiment of the present invention.

[0027] Icon: 1-turntable base plate; 2-support seat; 3-first limiter; 4-second limiter;

[0028] 21 - roller; 22 - fixed seat; 23 - movable seat; 24 - leveling bolt; 25 - fixing bolt; 26 - limit block; 31 - arc surface; 41 - guide wheel;

[0029] 231 - bottom plate. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0034] See also Figure 1 - Figure 3 In one embodiment, a fixture positioning turntable is provided, including a turntable base plate 1 and a support seat 2.

[0035] A first position-limiting member 3 is fixed to the bottom of the turntable substrate 1 , and the top of the support seat 2 abuts against the bottom of the first position-limiting member 3 to support the turntable substrate 1 .

[0036] A second limiter 4 is fixed on the support seat 2. The second limiter 4 can abut against the first limiter 3 when the turntable substrate 1 is in the clamp switching position, and the second limiter 4 is used to limit the movement of the first limiter 3 in the horizontal direction.

[0037] From the analysis of the above structure, it can be known that: the first limit member 3 is fixed at the bottom of the turntable substrate 1, and the bottom of the first limit member 3 is abutted against the top of the support seat 2, so that the support seat 2 can support the turntable substrate 1, so that the support seat 2 can limit the Z direction (vertical direction) position of the turntable substrate 1; the second limit member 4 is fixed on the top of the support seat 2, and the position of the first limit member 3 is set so that it can abut against the second limit member 4 when the clamp is switched, so that the second limit member 4 can limit the horizontal movement of the first limit member 3, that is, the second limit member 4 can limit the X and Y directions (two mutually perpendicular horizontal directions) positions of the turntable substrate 1.

[0038] Therefore, for the fixture positioning turntable provided in the present embodiment, when the center of gravity of the fixture on the turntable substrate 1 deviates from the center of the turntable or the turntable is impacted during the process of switching the fixture, the second limit member 4 can work together with the first limit member 3 to limit the position of the turntable substrate 1 in the X, Y and Z directions, thereby ensuring the positioning accuracy of the turntable and improving the welding quality of the body-in-white.

[0039] On the basis of the above technical solutions, the following solutions with added specific structures are also provided, and the corresponding technical effects of each technical solution are explained:

[0040] For specific structures, see Figure 3 A circular arc surface 31 coaxial with the turntable substrate 1 can be provided on the first limit member 3, and a limit portion can be provided on the second limit member 4, so that when the turntable rotates, the limit portion on the second limit member 4 can move along the circular arc surface 31 on the first limit member.

[0041] On the contrary, a limiting portion may be provided on the first limiting member 3, and an arc surface 31 coaxial with the turntable substrate 1 may be provided on the second limiting member 4, so that when the turntable rotates, the limiting portion on the first limiting member 3 can move along the arc surface 31 on the second limiting member 4.

[0042] Preferably, the limiting part is set as a guide wheel 41, and the guide wheel 41 can roll along the arc surface 31, thereby reducing the wear between the limiting part and the arc surface 31 during the rotation of the turntable substrate 1 and extending the service life.

[0043] For details, see Figure 1 and Figure 2The support seat 2, the first limit member 3 and the second limit member 4 can be set to multiple, the multiple first limit members 3 are matched with the multiple support seats 2 one by one, and the multiple first limit members 3 are respectively fixed on the corresponding support seats 2; the multiple second limit members 4 are matched with the multiple first limit members 3 one by one, and a circular arc surface 31 is set on each first limit member 3. At the same time, a limit portion is set on each second limit member 4, so that the limit portions on the multiple second limit members 4 can move respectively along the circular arc surface 31 on the corresponding first limit member.

[0044] Preferably, multiple first limit members 3 can be arranged in pairs as a group, and the positions of the two limit members in each group of first limit members can be set to positions where the pressures received from the second limit members 4 are opposite, so that the two limit members in each group of first limit members 3 can act in coordination, further improving the limiting effect on the turntable substrate 1.

[0045] Particularly, the plurality of first position-limiting members 3 may be arranged into two groups, and four first position-limiting members 3 in the two groups of first position-limiting members 3 may be respectively fixed at the four corners of the turntable substrate 1 , so as to reduce the cost while ensuring the accuracy.

[0046] As an implementation method, multiple support seats 2 can be set on the first circular ring, wherein the center of the first circular ring is located on the central axis of the turntable substrate 1, and the arc surfaces 31 on the first limiting member are all set on the same cylindrical surface, so as to determine the positions of multiple support seats 2 and ensure installation accuracy.

[0047] As another possible implementation mode, the multiple support seats 2 can be divided into multiple first support seats 2 and multiple second support seats 2 (the specific division into several types of support seats 2 can be changed according to needs), and the multiple first support seats 2 are all arranged on the second circular ring, wherein the center of the second circular ring is located on the central axis of the turntable substrate 1, and the arc surfaces 31 on the first limiting member fixed on the first support seat 2 are all arranged on the same cylindrical surface; the multiple second support seats 2 are all arranged on the second circular ring, wherein the center of the second circular ring is located on the central axis of the turntable substrate 1, and the arc surfaces 31 on the first limiting member fixed on the second support seat 2 are all arranged on the same cylindrical surface, wherein the radius of the second circular ring is smaller than the radius of the third circular ring, that is, the first support seat 2 and the second support seat 2 are located at circular rings with different radii to enhance the supporting effect.

[0048] Preferably, see Figure 4 and Figure 5 The bottom of the first limit member 3 is set as a plane, and a rolling member is installed on the support seat 2, so that when the bottom plane of the first limit member 3 abuts against the rolling member on the support seat 2, the rolling member can roll along the bottom plane of the first limit member 3, thereby reducing the wear between the support seat 2 and the first limit member 3 when the turntable substrate 1 rotates.

[0049] In the specific structure, a ball-acting rolling element can be selected, and a ball groove can be opened on the top of the support seat 2 to place the ball into the ball groove. In this way, the ball can roll freely in the ball groove, so that the ball can roll more smoothly along the bottom plane of the first limit member 3 to prevent the ball from leaving the support seat.

[0050] In the specific structure of the support seat 2, a fixed seat 22 and a movable seat 23 are provided, and a plurality of leveling bolts 24 are provided between the movable seat 23 and the fixed seat 22. The plurality of leveling bolts 24 are respectively connected to the movable seat 23 and the fixed seat 22, and a gap is provided between the fixed seat 22 and the movable seat 23, so that the plurality of leveling bolts 24 can adjust the gap size between the fixed seat 22 and the movable seat 23 at their positions, thereby adjusting the deviation of the movable seat 23 in the X, Y, and Z directions to further ensure the position accuracy of the movable seat 23, thereby ensuring the accuracy of the turntable.

[0051] Furthermore, a bottom plate portion 231 is provided at the bottom of the movable seat 23, and a plurality of limit blocks 26 are provided on the top of the fixed seat 22, and the plurality of limit blocks 26 are surrounded by the bottom plate portion 231 at the bottom of the movable seat 23, and the plurality of limit blocks 26 are all abutted against the edge of the bottom plate portion 231 of the movable seat, so that the limit blocks 26 can further limit the position of the movable seat 23, and the limit blocks 26 can also play a role in preliminary positioning of the bottom plate portion 231 of the movable seat.

[0052] In the specific structure, the bottom plate portion 231 of the movable seat is a polygonal plate-shaped structural member, the limiting block 26 is provided with a plane side wall, and the plane side wall of the limiting block 26 abuts against the side wall of the bottom plate portion 231 of the movable seat to enhance the limiting effect.

[0053] Preferably, the bottom plate portion 231 of the movable seat can be set to a square plate structure.

[0054] In particular, fixing bolts 25 may be used to perform preliminary fixing between the fixed seat 22 and the movable seat 23 .

[0055] In addition, the first limit member 3 can be set as a circular ring structure with its center on the central axis of the turntable substrate 1, so that the second limit member 4 can always be in contact with the first limit member 3 during the rotation of the turntable substrate 1, that is, the turntable substrate 1 can always be limited by the second limit member 4 during the rotation of the turntable substrate 1, thereby further improving the accuracy of the turntable, especially when the center of gravity of the clamp on the turntable substrate 1 deviates from the center of the turntable, the superiority of this setting will be more obvious.

[0056] In summary, the embodiment of the present invention discloses a fixture positioning turntable, which overcomes many technical defects of the traditional fixture positioning turntable. In the fixture positioning turntable provided by the embodiment of the present invention, when the center of gravity of the fixture on the turntable substrate deviates from the center of the turntable or the turntable is impacted during the process of switching the fixture, the second limit member can work together with the first limit member to limit the position of the turntable substrate in the X, Y and Z directions, thereby ensuring the positioning accuracy of the turntable and improving the welding quality of the body-in-white.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixture positioning turntable, characterized in that: It includes a turntable base plate and a support seat; Wherein, a first limiting member is fixed to the bottom of the turntable substrate, and the top of the support seat abuts against the bottom of the first limiting member to support the turntable substrate; A second limiting member is fixed on the support seat, and the second limiting member can abut against the first limiting member when the turntable substrate is in the clamp switching position, and the second limiting member is used to limit the movement of the first limiting member in the horizontal direction; The first limiting member is provided with an arc surface coaxial with the turntable substrate, the second limiting member is provided with a limiting portion, and the limiting portion on the second limiting member can move along the arc surface on the first limiting member; There are multiple support seats, multiple first limiters and multiple second limiters, and multiple first limiters correspond to multiple support seats one by one, and each first limiter is fixed on the corresponding support seat; multiple second limiters correspond to multiple first limiters one by one, and each first limiter is provided with an arc surface, and each second limiter is provided with the limit part, and the limit parts on multiple second limiters can move along the arc surface on the corresponding first limiter; The first limiting members are arranged in groups of two, and the pressures exerted on the two first limiting members in each group of the first limiting members by the second limiting members are opposite; The limiting part on the second limiting member is a guide wheel, and the guide wheel can roll along the arc surface on the first limiting member; The bottom of the first limiting member is a plane, and a rolling member is installed on the support seat. The rolling member can roll along the bottom plane of the first limiting member when abutting against the bottom of the first limiting member.

2. The fixture positioning turntable according to claim 1, characterized in that: The plurality of support seats are all located on a first circular ring, and the center of the first circular ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limiting member are all located on the same cylindrical surface.

3. The fixture positioning turntable according to claim 1, characterized in that: The multiple support seats include multiple first support seats and multiple second support seats, the multiple first support seats are all located on the second circular ring, the center of the second circular ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limiting members fixed on the first support seats are all located on the same cylindrical surface; the multiple second support seats are all located on the third circular ring, the center of the third circular ring is located on the central axis of the turntable substrate, and the arc surfaces on the first limiting members fixed on the second support seats are all located on the same cylindrical surface, and the radius of the second circular ring is smaller than the radius of the third circular ring.

4. The fixture positioning turntable according to claim 1, characterized in that: The support seat includes a fixed seat and a movable seat, a gap is present between the fixed seat and the movable seat, and a plurality of leveling bolts are provided between the movable seat and the fixed seat, and the plurality of leveling bolts are respectively connected to the movable seat and the fixed seat.

5. The fixture positioning turntable according to claim 4, characterized in that: The bottom of the movable seat is provided with a bottom plate portion, and the top of the fixed seat is provided with a plurality of limit blocks, which surround the bottom plate portion at the bottom of the movable seat and are all in contact with the edge of the bottom plate portion of the movable seat.

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