CN116214219A - Automobile model clamping device and clamping method - Google Patents

Abstract

The invention discloses an automobile model clamping device and a clamping method, wherein the automobile model clamping device comprises a base, a positioning mechanism and a plurality of alignment mechanisms are arranged on the base, each alignment mechanism comprises a shell, a first sliding block, a second sliding block, a driving block, a first pressing block, a first transmission rod and a second transmission rod, a sliding block guide rail is arranged on the shell, the first sliding block and the second sliding block are assembled on the sliding block guide rail, the driving block is arranged on the shell and is used for driving the driving block to move, the driving block is matched with the first sliding block and the second sliding block through inclined planes, so that the first sliding block and the second sliding block can be spread along the width direction of a workbench T-shaped groove and prop against the vertical surfaces on two sides of the workbench T-shaped groove, and the first pressing block can be embedded into the workbench T-shaped groove in a first posture and can rotate around the second transmission rod to a second posture after extending into the bottom of the workbench T-shaped groove so as to be locked in the workbench T-shaped groove. The automobile model alignment operation can be realized fast, the operation difficulty is reduced, and the precision and the operation efficiency are improved.

Description

Automobile model clamping device and clamping method

Technical Field

The invention is used in the field of automobile design, and particularly relates to an automobile model clamping device and an automobile model clamping method.

Background

The automobile industry often needs to process automobile models, including hard wood models and soft oil sludge models, and when multiple automobile models are developed, different models are heavy in processing service; even if models of the same vehicle model are changed frequently before the models are evaluated and determined, the model is reworked. The model processing needs to use 5 processing centers, and during each processing, one-time clamping and coordinate alignment are needed. When the design is changed and secondary processing is carried out, the current processing coordinate system needs to be set to coincide with the previous processing coordinate system, if a reference is reserved on the model, the reference of the model needing to be changed needs to be found by using a dial indicator, then the model is set to programming software, and if the reference is not reserved on the model, the model cannot be reprocessed.

In the prior art, when the model is clamped, an operator lifts the model to be processed, places the model on a clamp, then operates a processing center, repeatedly adjusts the position of the model, aligns and finds a reference to establish a coordinate system, wherein in the alignment operation, the operator needs to find a straight edge or two points with the same coordinate value on the X\Y direction of the model respectively, move a dial indicator to touch the straight edge or the two points, and repeatedly adjust the position of the model according to the readings of the dial indicator, so that the X\Y\Z direction of the model is consistent with the X\Y\Z direction of processing equipment. The alignment operation mode needs repeated straightening and angle adjustment through the dial indicator, wastes time and cannot guarantee accuracy.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides an automobile model clamping device and an automobile model clamping method, which can rapidly realize the alignment operation of an automobile model, reduce the operation difficulty and improve the precision and the operation efficiency.

The technical scheme adopted for solving the technical problems is as follows:

according to the automobile model clamping device, an automobile model is clamped to a workbench of processing equipment, the automobile model clamping device comprises a base, a positioning mechanism matched with the automobile model and a plurality of alignment mechanisms used for aligning the base and connecting the base to a T-shaped groove of the workbench are arranged on the base, each alignment mechanism comprises a shell, a first sliding block, a second sliding block, a driving block, a first pressing block, a first transmission rod and a second transmission rod, the shell is arranged at the bottom of the base and can be embedded into the T-shaped groove of the workbench, the shell is provided with a sliding block guide rail extending along the width direction of the T-shaped groove of the workbench, the first sliding block and the second sliding block are assembled on the sliding block guide rail along the width direction of the T-shaped groove of the workbench, the driving block can be lifted and arranged in the shell, the first transmission rod is used for driving the driving block to move, the driving block and the first sliding block and the second sliding block are matched with each other by an inclined plane, so that the first sliding block and the second sliding block can prop up against the T-shaped groove of the workbench along the width direction of the T-shaped groove of the workbench, the first sliding block can be embedded into the T-shaped groove, and the T-shaped groove can be embedded into the T-shaped groove along the first transmission rod, and the T-shaped groove can be embedded into the T-shaped groove.

With reference to the first aspect, in certain implementation manners of the first aspect, the first transmission rod includes an adjusting screw, a vertical screw hole is provided on the base, the adjusting screw is screwed into the vertical screw hole, and a lower end of the first transmission rod is abutted with the driving block.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, a supporting cushion block supported above the adjusting screw is arranged on the base, the adjusting screw is provided with a hollow inner hole, the second transmission rod includes a screw rod, the screw rod penetrates through the inner hole, the lower end of the screw rod is connected below the shell to the first pressing block, a nut is arranged at the top of the supporting cushion block at the upper end of the screw rod, a floating space of the adjusting screw is formed between the supporting cushion block and the base, and a lateral force application hole is formed at the top of the adjusting screw rod.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the housing is provided with a hollow inner cavity, the first slider, the second slider and the driving block are disposed in the inner cavity, a cover plate is disposed at the top of the housing, the housing is provided with a first opening for the first slider to extend along the slider guide rail and a second opening for the second slider to extend along the slider guide rail, the first slider is provided with a first inclined surface matched with the driving block and a first side end surface for supporting against a side elevation of a T-shaped slot of a working table, the second slider is provided with a second inclined surface matched with the driving block and a second side end surface for supporting against a side elevation of the T-shaped slot of the working table, and the driving block is provided with a wedge-shaped surface matched with the first inclined surface and the second inclined surface.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, an elastic component that drives the first slider and the second slider to return to the inner cavity is provided in the housing.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a plurality of alignment mechanisms are distributed on the base along a straight line, a plurality of alignment mechanisms can be connected in one T-shaped groove of the workbench, the base is provided with a third transmission rod, a second pressing block is arranged at the lower end of the third transmission rod, and the second pressing block can be embedded into another T-shaped groove of the workbench in a first posture and can rotate around the third transmission rod to a second posture after extending into the bottom of the T-shaped groove so as to lock the base to the workbench.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a support for supporting the automobile model at a certain height is provided on the base, the positioning mechanism is disposed at the top of the support, the positioning mechanism includes a plurality of positioning components, the positioning components include cylindrical pins extending along the height direction, the top ends of the cylindrical pins are provided with spherical surfaces, counter bores are provided on the spherical surfaces, ball seats are provided in the counter bores, ball balls are provided in the ball seats, snap spring sleeves for limiting the ball balls in the ball seats are provided on the ball seats, and the highest point of the ball does not exceed the top point of the complete outline of the spherical surface.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the support top is provided with a first fixing plate and a second fixing plate along a length direction, the first fixing plate top is provided with a first support plate, the first support plate is mounted on the first fixing plate through a first support rail extending along the length direction, the second fixing plate top is provided with a second support plate, the second support plate is mounted on the second fixing plate through a second support rail extending along the length direction, the first support plate is provided with a first waist-shaped hole and a second waist-shaped hole extending along the first support rail direction, the second support plate is provided with a third waist-shaped hole and a fourth waist-shaped hole extending along the second support rail direction, the cylindrical pin includes a first cylindrical pin extending upward through the first waist-shaped hole and a second cylindrical pin extending upward through the third waist-shaped hole, the first support plate can adjust a position along the first support rail, and can be fixed in the second fixing plate through a first waist-shaped hole and a second fastener, and the second support plate can adjust a position along the second fastener.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the support is provided with a hand wheel, the hand wheel is connected with a positive threaded screw rod and a negative threaded screw rod which are coaxially arranged, the positive threaded screw rod is in transmission fit with the first support plate, and the negative threaded screw rod is in transmission fit with the second support plate.

In a second aspect, an automobile model clamping method includes the following steps:

preparing an automobile model clamping device according to any implementation mode;

the automobile model clamping device is arranged on a workbench of processing equipment, a plurality of alignment mechanisms are embedded into a T-shaped groove of the workbench, the first transmission rod is regulated to drive the driving block to move, the driving block drives the first sliding block and the second sliding block to prop open along the width direction of the T-shaped groove of the workbench and prop against the two side vertical surfaces of the T-shaped groove of the workbench, and when the outer side end surfaces of the first sliding block and the second sliding block of the alignment mechanisms are completely attached to the side vertical surfaces of the T-shaped groove of the workbench, the coordinate system direction of the automobile model clamping device is consistent with the coordinate system direction of the processing equipment;

the second transmission rod is adjusted, so that the first pressing block is embedded into a T-shaped groove of the workbench in a first posture, and rotates to a second posture around the second transmission rod after the first pressing block stretches into the bottom of the T-shaped groove of the workbench, and the first pressing block is transversely arranged in the T-shaped groove of the workbench and locks the automobile model clamping device on the workbench;

and placing the automobile model on the automobile model clamping device, and positioning the automobile model on the automobile model clamping device by matching with the positioning mechanism.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, the automobile model can be quickly aligned on a workbench of processing equipment, particularly, in the operation process, a plurality of alignment mechanisms are embedded into a T-shaped groove of the workbench, a first transmission rod is adjusted to drive a driving block to move, a first sliding block and a second sliding block are driven by the driving block to prop open along the width direction of the T-shaped groove of the workbench and prop against two side vertical surfaces of the T-shaped groove of the workbench, when the outer side end surfaces of the first sliding block and the second sliding block of the plurality of alignment mechanisms are completely attached to the side vertical surfaces of the T-shaped groove of the workbench, the coordinate system direction of an automobile model clamping device is consistent with the coordinate system direction of the processing equipment, and a first pressing block is further locked to the T-shaped groove of the workbench through a second transmission rod.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of an embodiment of an automobile model clamping device of the present invention;

FIG. 2 is a schematic view of a table mounted to a processing apparatus according to one embodiment shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic illustration of the alignment mechanism of one embodiment shown in FIG. 1;

FIG. 5 is a schematic view of a T-slot connection between the alignment mechanism and the table of one embodiment shown in FIG. 1;

FIG. 6 is a schematic view of the positioning mechanism, first support plate and second support plate structure of one embodiment shown in FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

FIG. 8 is an exploded view of the positioning assembly of one embodiment shown in FIG. 1;

FIG. 9 is a schematic diagram of a positional automobile model of one embodiment shown in FIG. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.

In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

In which fig. 1 shows a reference direction coordinate system of an embodiment of the present invention, and the embodiment of the present invention is described below with reference to the directions shown in fig. 1.

The embodiment of the invention provides an automobile model clamping device which is used for clamping an automobile model on a workbench of processing equipment, can rapidly and accurately realize the alignment of the automobile model clamping device on the workbench of the processing equipment, does not need repeated adjustment through a dial indicator, and then is fixedly locked.

Referring to fig. 1, 2, 3, 4 and 5, the automobile model clamping device comprises a base 100, wherein a positioning mechanism for matching with an automobile model 200 and a plurality of alignment mechanisms for aligning the base 100 and connecting the alignment mechanisms with a workbench T-shaped groove 301 are arranged on the base 100, each alignment mechanism comprises a shell 101, a first sliding block 102, a second sliding block 103, a driving block 104, a first pressing block 105, a first transmission rod 106 and a second transmission rod 107, the shell 101 is arranged at the bottom of the base 100 and can be embedded into the workbench T-shaped groove 301, the shell 101 is provided with a sliding block guide rail 108 extending along the width direction of the workbench T-shaped groove 301, the first sliding block 102 and the second sliding block 103 are assembled on the sliding block guide rail 108 along the width direction of the workbench T-shaped groove 301, the driving block 104 can be arranged on the shell 101 in a lifting manner, the first transmission rod 106 is used for driving the driving block 104 to move in a lifting manner, the driving block 104 is matched with the first sliding block 102 and the second sliding block 103 by inclined planes, so that the first sliding block 102 and the second sliding block 103 are spread along the width direction of the T-shaped groove 301 of the workbench and prop against two side vertical faces 302 of the T-shaped groove 301 of the workbench, the first pressing block 105 is connected to the lower end of the second transmission rod 107, the first pressing block 105 can be embedded into the T-shaped groove 301 of the workbench in a first posture, and can rotate to a second posture around the second transmission rod 107 to be locked in the T-shaped groove 301 of the workbench after extending into the bottom of the T-shaped groove 301 of the workbench, for example, in some embodiments, the first pressing block 105 is in a cuboid shape, the first pressing block 105 is longitudinally embedded into the T-shaped groove, when the first pressing block 105 extends to the bottom of the T-shaped groove, the second transmission rod 107 is rotated by 90 degrees, and then the long side of the first pressing block 105 is transversely arranged in the T-shaped groove to realize locking.

According to the technical scheme, the automobile model 200 can be quickly aligned on the workbench 300 of the processing equipment, particularly, in the operation process, a plurality of alignment mechanisms are embedded into the T-shaped groove of the workbench 300, the first transmission rod 106 is adjusted to drive the driving block 104 to move, the driving block 104 drives the first sliding block 102 and the second sliding block 103 to prop up and prop against the two side vertical surfaces 302 of the T-shaped groove 301 of the workbench along the width direction of the T-shaped groove 301 of the workbench, when the outer side end surfaces of the first sliding block 102 and the second sliding block 103 of the plurality of alignment mechanisms are completely attached to the side vertical surfaces 302 of the T-shaped groove 301 of the workbench, the coordinate system direction of the automobile model clamping device is consistent with the coordinate system direction of the processing equipment, the first pressing block 105 is further locked on the T-shaped groove 301 of the workbench through the second transmission rod 107, and the automobile model clamping device is aligned at the moment.

The first transmission rod 106 is used for driving the driving block 104 to lift in the shell 101, so that the first sliding block 102 and the second sliding block 103 on two sides are driven to move along the sliding block guide rail 108 through inclined plane matching in lifting, and matching with the two vertical faces 302 of the T-shaped groove 301 of the workbench is realized. The first transmission rod 106 can be driven to lift by a lever, a cam, an air cylinder or the like. In some embodiments, referring to fig. 4 and 5, the first transmission rod 106 includes an adjusting screw, a vertical screw hole is provided on the base 100, the adjusting screw is screwed into the vertical screw hole, and a lower end of the first transmission rod 106 abuts against the driving block 104. When the adjusting screw rod is rotated downwards, the adjusting screw rod pushes the driving block 104 to move downwards, the driving block 104 moves downwards to drive the first sliding block 102 and the second sliding block 103 to move towards two sides along the sliding block guide rail 108, the adjusting screw rod is screwed to the tightest state, at the moment, the end faces of the outer sides of the first sliding block 102 and the second sliding block 103 of the sliding block are completely attached to the side vertical face 302 of the T-shaped groove, and when a plurality of alignment mechanisms are all screwed, the whole automobile model clamping device is straightened, and the coordinate system direction is consistent with the coordinate system of a machine tool.

Further, referring to fig. 3, 4 and 5, a supporting pad 109 supported above an adjusting screw is provided on the base 100, the adjusting screw is provided with a hollow inner hole, the second transmission rod 107 includes a screw rod, the screw rod penetrates through the inner hole, the lower end of the screw rod is connected with the first pressing block 105 below the housing 101, a nut 110 is provided at the top of the supporting pad 109 at the upper end of the screw rod, a floating space of the adjusting screw is formed between the supporting pad 109 and the base 100, a lateral force application hole 111 is provided at the top of the adjusting screw rod, and the adjusting screw rod can be rotated to adjust the driving block 104 through the lateral force application hole 111. The adjusting screw rod and the screw rod are coaxially arranged, after the automobile model clamping device is integrally straightened, the screw cap 110 is unscrewed, the screw rod is downwards extended, when the first pressing block 105 is extended to the bottom of the T-shaped groove, the screw rod is rotated by 90 degrees, at the moment, the long side of the first pressing block 105 is transversely arranged in the T-shaped groove, the screw cap 110 is locked, the plurality of alignment mechanisms are all locked in sequence, at the moment, the base 100 is fixed with the workbench 300, and the coordinates cannot be changed due to collision. In this embodiment, alignment mechanism will align, and the function looks structure of locking, alignment, locking operation can link up mutually, but by independent each other, mutually noninterfere, structural design is ingenious, convenient and practical.

In some embodiments, referring to fig. 4, the housing 101 is provided with a hollow inner cavity, the first slider 102, the second slider 103 and the driving block 104 are disposed in the inner cavity, the top of the housing 101 is provided with a cover plate 112, the first transmission rod 106 abuts against the driving block 104 through the cover plate 112, the housing 101 is provided with a first opening 113 for the first slider 102 to extend along the slider rail 108 and a second opening for the second slider 103 to extend along the slider rail 108, the first slider 102 is provided with a first inclined surface matched with the driving block 104 and a first side end surface for abutting against the side elevation 302 of the T-shaped slot 301 of the working table, the second slider 103 is provided with a second inclined surface matched with the driving block 104 and a second side end surface for abutting against the side elevation 302 of the T-shaped slot 301 of the working table, and the driving block 104 is provided with a wedge surface matched with the first inclined surface and the second inclined surface.

Further, referring to fig. 4, an elastic member 114 for driving the first slider 102 and the second slider 103 to return to the inner cavity is provided in the housing 101. When the first transmission rod 106 is unscrewed, the first slider 102 and the second slider 103 can be automatically reset under the action of the elastic component 114, and the whole alignment mechanism can be smoothly taken out of the workbench T-shaped groove 301.

The alignment mechanisms may be coupled to one T-slot or may be coupled to a plurality of different T-slots, for example, in some embodiments, referring to fig. 1, 2, and 5, the alignment mechanisms may be linearly distributed on the base 100, and the alignment mechanisms may be coupled to one T-slot of the table 300. Meanwhile, in order to ensure stability of locking, the base 100 is provided with a third transmission rod 115, a second pressing block 116 is provided at a lower end of the third transmission rod 115, the second pressing block 116 can be inserted into another T-shaped groove of the workbench 300 in a first posture, and can rotate around the third transmission rod 115 to a second posture after extending into a bottom of the T-shaped groove to lock the base 100 to the workbench 300.

In some embodiments, referring to fig. 1, a stand 117 for supporting the automobile model 200 at a certain height is provided on the base 100, and a positioning mechanism is provided on the top of the stand 117, so that the automobile model 200 can be supported by the stand 117 and positioned at a certain height by the positioning mechanism, so that the processing equipment can process the automobile model 200 in multiple directions.

The positioning mechanism comprises a plurality of positioning components, and the plurality of positioning components are used for being matched with a plurality of positions at the bottom of the automobile model 200, so that the automobile model 200 is positioned at the top of the bracket 117 in a specific posture.

The automobile model 200 is relatively heavy, and it is difficult to move the automobile model 200 on the clamping device and to move the model to a specific position. In view of this, referring to fig. 6, 7 and 8, the specifications of the positioning components are the same, the positioning components comprise cylindrical pins 118 extending along the height direction, the cylindrical pins 118 are used for being matched with pin holes at the bottom of the automobile model 200, the top ends of the cylindrical pins 118 are designed to be spherical surfaces, counter bores are formed in the spherical surfaces, rolling balls seats 119 are formed in the counter bores, rolling balls 120 are arranged in the rolling balls seats 119, snap spring sleeves 121 limiting the rolling balls 120 in the rolling balls 119 are arranged on the rolling balls 119, and the highest point of the rolling balls 120 does not exceed the top point of the complete outline of the spherical surfaces. Therefore, when the automobile model 200 moves on the support 117, the bottom plane of the automobile model 200 is in contact with the rolling ball point, and the rolling ball can roll in the cylinder sleeve, so that the model is convenient to move and adjust, the automobile model is moved until the cylindrical pin 118 is clamped into a round hole preset in the automobile model bottom plate (soft model) or the automobile bottom (hard automobile model), and a guide groove extending to the round hole can be formed in the automobile model bottom for conveniently clamping the automobile model into the cylindrical pin 118. Meanwhile, the turning mold is fixed with the clamping device, at the moment, the X/Y axis of the turning mold is consistent with the direction of the coordinate system of the clamping device, when the turning mold is clamped for the second time, the relative positions of the turning mold and the clamping device are consistent with those of the first time, and the problems of time waste and poor precision caused by repeated positioning and re-finding of the original machining reference are solved.

In some embodiments, referring to fig. 1 and 6, a first fixing plate 122 and a second fixing plate 123 are provided on the top of the bracket 117 along the length direction, a first support plate 124 is provided on the top of the first fixing plate 122, the first support plate 124 is mounted on the first fixing plate 122 through a first support rail extending along the length direction, a second support plate 125 is provided on the top of the second fixing plate 123, the second support plate 125 is mounted on the second fixing plate 123 through a second support rail extending along the length direction, a first waist-shaped hole 126 and a second waist-shaped hole 127 are provided on the first support plate 124 along the length direction, a third waist-shaped hole 128 and a fourth waist-shaped hole 129 extending along the length direction are provided on the second support plate 125, the cylindrical pin 118 includes a first cylindrical pin 118 extending upward through the first waist-shaped hole 126 and a second cylindrical pin 118 extending upward through the third waist-shaped hole 128, the first support plate 124 is capable of adjusting position along the first support rail, and is capable of being locked on the first support plate through a first fastener provided in the second waist-shaped hole 127, and is capable of being locked on the second support plate 125 along the length direction, and is capable of being fixed on the second support plate through the second waist-shaped hole 123. The first cylindrical pin 118 and the second cylindrical pin 118 remain unchanged all the time when the first support plate 124 and the second support plate 125 are adjusted in position. When the soft model is processed, the soft material is soft, and the moment of the processing tool is small, so that the model or blank is directly placed on the bracket 117, and the processing can be performed; when the hard model is machined, the stress of the model is large, the position of the model may change during machining, 4 round holes in four corners of the first support plate 124 and the second support plate 125 are exposed through adjusting the first support plate 124 and the second support plate 125, then the model and the clamp are locked from bottom to top through bolts passing through the 4 round holes, and then machining is performed. The embodiment solves the problem that the hard and soft model processing fixtures are not shared and cannot correspond to multiple vehicle types.

For the position adjustment of the first support plate 124 and the second support plate 125, an air cylinder or manual adjustment may be used, for example, in some embodiments, referring to fig. 1 and 6, the bracket 117 is provided with a hand wheel 130, and the hand wheel 130 is connected to a positive threaded screw 131 and a negative threaded screw 132 coaxially arranged, where the positive threaded screw 131 is in driving engagement with the first support plate 124, and the negative threaded screw 132 is in driving engagement with the second support plate 125. The front screw 131 and the back screw 132 are equal in length and are assembled together to be rotatable together. When the size needs to be adjusted, the bolts in the second waist-shaped holes 127 and the fourth waist-shaped holes 129 of the first support plate 124 and the second support plate 125 are unscrewed, the hand wheel 130 is rotated, the positive screw thread screw rod 131 and the reverse screw thread screw rod 132 keep rotating in the same direction with the hand wheel 130, and the first support plate 124 and the second support plate 125 relatively move outwards due to the fact that the screw threads of the positive screw thread screw rod 131 and the reverse screw thread screw rod 132 are opposite, so that the size adjustment purpose is achieved. First and second support rails are provided on the bottoms of the first and second support plates 124 and 125 and the first and second fixing plates 122 and 123, respectively, to ensure the rectilinear accuracy when the first and second support plates 124 and 125 move. And when the position is adjusted to the target position, tightening the bolt in the waist hole for locking, and installing the model or the blank.

Referring to fig. 1, 2 and 9, an embodiment of the present invention provides an automobile model clamping method, which includes the following steps:

preparing the automobile model clamping device in any embodiment;

placing the automobile model clamping device on a workbench 300 of processing equipment, embedding a plurality of alignment mechanisms into a T-shaped groove of the workbench 300, adjusting a first transmission rod 106 to drive a driving block 104 to move, driving a first sliding block 102 and a second sliding block 103 to prop open along the width direction of the T-shaped groove 301 of the workbench and prop against two side vertical surfaces 302 of the T-shaped groove 301 of the workbench, and when the outer side end surfaces of the first sliding block 102 and the second sliding block 103 of the alignment mechanisms are completely attached to the side vertical surfaces 302 of the T-shaped groove 301 of the workbench, enabling the coordinate system direction of the automobile model clamping device to be consistent with the coordinate system direction of the processing equipment;

the second transmission rod 107 is adjusted to enable the first pressing block 105 to be embedded into the T-shaped groove of the workbench 300 in a first posture, and the first pressing block 105 rotates to a second posture around the second transmission rod 107 after extending into the bottom of the T-shaped groove 301 of the workbench, the first pressing block 105 is transversely arranged in the T-shaped groove of the workbench 300, and the automobile model clamping device is locked on the workbench 300;

the automobile model 200 is placed on the automobile model clamping device, and the automobile model 200 is positioned on the automobile model clamping device by being matched with the positioning mechanism.

In addition, the embodiment of the invention also provides a repeated positioning method which comprises the following steps:

1. identifying and activating a determined hole site coordinate system on the machining equipment workbench 300, and marking as an origin N0 (X0, Y0, Z0);

2. placing the whole clamping device on the surface of a workbench 300 of a machining center, aligning the positioning holes of the clamping device with the hole positions identified in the step 1, inserting positioning pins into the two aligned holes, and rotating the clamping device along the axis of the positioning pins at the moment;

3. the screw cap 110 and the supporting cushion block 109 of the alignment mechanism are taken down, the adjusting screw rod is rotated downwards until the adjusting screw rod is completely fastened, and at the moment, the first sliding block 102 and the second sliding block 103 are completely attached to the upper side surface of the T-shaped groove;

the alignment mechanisms operate in the same way;

installing a support cushion block 109, placing the screw rod downwards at the bottom of the T-shaped groove, rotating by 90 degrees, observing that the arrow mark on the top surface of the screw rod is vertical to the direction of the T-shaped groove, installing a screw cap 110, and locking;

the alignment mechanisms operate in the same way;

4. locking two second pressing blocks 116 on the clamping device, wherein the clamping device is aligned at the moment;

5. when programming, reserving holes with the same specification and arc-shaped grooves at the positions matched with the positioning components on the model or the model bottom plate;

6. according to the size of the model, the hand wheel 130 is used for adjusting the size of the clamping device to the target size;

7. hoisting the model onto a clamping device, arranging the model in a visual inspection mode approximately according to the programmed direction, enabling the bottom surface of the model or the bottom surface of the bottom plate to be in contact with a rolling ball point of a positioning mechanism, pushing the model by a head and a tail along the width direction of the vehicle body respectively, and stopping when an arc-shaped groove of the bottom surface moves onto the positioning mechanism; at this time, the X/Y/Z direction of the model is parallel to the X/Y/Z direction of the machining center;

8. pushing the car model along the length direction of the car model, and designing the cambered surface groove and the positioning mechanism, so that the model linearly moves on the repeated positioning mechanism along the cambered surface groove, and when the preformed hole in the step 5 is overlapped with the positioning mechanism, the model is sleeved on the repeated positioning mechanism due to the gravity and the guiding action of the positioning mechanism, and the positioning is completed;

9. processing a soft model by directly converting a coordinate system; the hard model is locked with the clamp through 4 round hole mounting bolts, and then the coordinate system is converted for processing;

10. the method for converting the coordinate system comprises the following steps:

the relative relation among the model, the clamping device and the workbench 300 is consistent with the actual clamping during programming and design;

selecting an origin N1 of a processing coordinate system, wherein under the coordinate system of the first step, the coordinates of N1 are N1 (X1, Y1 and Z1), and the distance to be converted in the actual processing of X/Y/Z axes is as follows:

X＝X1-X0

Y＝Y1-Y0

Z＝Z1-Z0

setting the point (X1-X0, Y1-Y0, Z1-Z0) as a new origin of coordinates N1, storing in the processing equipment and activating;

and after the positioning is finished, the programming software derives the code and can be directly processed.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and these equivalent modifications or substitutions are intended to be included in the scope of the present invention as defined in the claims.

Claims (10)

1. The utility model provides an automobile model clamping device for clamping automobile model to processing equipment's workstation, its characterized in that, automobile model clamping device includes the base, be equipped with on the base be used for with automobile model complex positioning mechanism and be used for with the base alignment and connect in a plurality of alignment mechanisms of workstation T groove, alignment mechanism includes casing, first slider, second slider, driving block, first briquetting, first transfer line and second transfer line, the casing set up in the base bottom and can imbed the workstation T groove, the casing be equipped with along the slider guide rail of workstation T groove's width direction extension, first slider, second slider along workstation T groove's width direction assemble in the slider guide rail, the driving block can go up and down set up in the casing, first transfer line is used for driving the driving block removes, the driving block with first slider with the second slider adopts bevel cooperation, so that first slider and second slider prop up and the workstation T groove along workstation width direction of workstation T and can imbed in the workstation T groove, second slider can stretch into the workstation T groove to the second and stretch into the workstation T groove to the second position in the workstation T groove, the second can stretch into the workstation T groove to the second is located the workstation T groove.

2. The automobile model clamping device according to claim 1, wherein the first transmission rod comprises an adjusting screw rod, a vertical screw hole is formed in the base, the adjusting screw rod is screwed into the vertical screw hole, and the lower end of the first transmission rod is abutted with the driving block.

3. The automobile model clamping device according to claim 2, wherein a supporting cushion block supported above the adjusting screw rod is arranged on the base, the adjusting screw rod is provided with a hollow inner hole, the second transmission rod comprises a screw rod, the screw rod penetrates through the inner hole, the lower end of the screw rod is connected with the first pressing block below the shell, a nut is arranged at the top of the supporting cushion block at the upper end of the screw rod, a floating space of the adjusting screw rod is formed between the supporting cushion block and the base, and a lateral force application hole is formed at the top of the adjusting screw rod.

4. The automobile model clamping device according to claim 1, wherein the shell is provided with a hollow inner cavity, the first sliding block, the second sliding block and the driving block are arranged in the inner cavity, a cover plate is arranged at the top of the shell, the shell is provided with a first opening for the first sliding block to extend along the sliding block guide rail and a second opening for the second sliding block to extend along the sliding block guide rail, the first sliding block is provided with a first inclined surface matched with the driving block and a first side end surface for supporting a side elevation of a T-shaped groove of a working table, the second sliding block is provided with a second inclined surface matched with the driving block and a second side end surface for supporting the side elevation of the T-shaped groove of the working table, and the driving block is provided with a wedge-shaped surface matched with the first inclined surface and the second inclined surface.

5. The automobile model clamping device according to claim 4, wherein elastic components for driving the first sliding block and the second sliding block to reset into the inner cavity are arranged in the shell.

6. The automobile model clamping device according to claim 1, wherein a plurality of alignment mechanisms are distributed on the base along a straight line, the alignment mechanisms can be connected into one T-shaped groove of the workbench, the base is provided with a third transmission rod, the lower end of the third transmission rod is provided with a second pressing block, the second pressing block can be embedded into the other T-shaped groove of the workbench in a first posture, and can rotate around the third transmission rod to a second posture after extending into the bottom of the T-shaped groove so as to lock the base to the workbench.

7. The automobile model clamping device according to claim 1, wherein a bracket for supporting the automobile model at a certain height is arranged on the base, the positioning mechanism is arranged at the top of the bracket, the positioning mechanism comprises a plurality of positioning components, each positioning component comprises a cylindrical pin extending along the height direction, the top end of each cylindrical pin is a spherical surface, a counter bore is arranged on the spherical surface, a rolling ball seat is arranged in the counter bore, a rolling ball is arranged in the rolling ball seat, a clamp spring sleeve for limiting the rolling ball in the rolling ball seat is arranged on the rolling ball seat, and the highest point of the rolling ball does not exceed the top point of the complete outline of the spherical surface.

8. The automobile model clamping device according to claim 7, wherein a first fixing plate and a second fixing plate are arranged on the top of the bracket along the length direction, a first supporting plate is arranged on the top of the first fixing plate, the first supporting plate is installed on the first fixing plate through a first supporting guide rail extending along the length direction, a second supporting plate is arranged on the top of the second fixing plate, the second supporting plate is installed on the second fixing plate through a second supporting guide rail extending along the length direction, a first waist-shaped hole and a second waist-shaped hole extending along the first supporting guide rail direction are formed in the first supporting plate, a third waist-shaped hole and a fourth waist-shaped hole extending along the second supporting guide rail direction are formed in the second supporting plate, the cylindrical pin comprises a first cylindrical pin extending upwards through the first waist-shaped hole and a second cylindrical pin extending upwards through the third waist-shaped hole, the first supporting plate can be adjusted in position along the first supporting guide rail, the second supporting plate can be locked in the first fixing plate through the second waist-shaped hole, and the second supporting plate can be adjusted in the second fixing plate along the second waist-shaped hole.

9. The automobile model clamping device according to claim 8, wherein the bracket is provided with a hand wheel, the hand wheel is connected with a positive screw thread screw rod and a negative screw thread screw rod which are coaxially arranged, the positive screw thread screw rod is in transmission fit with the first support plate, and the negative screw thread screw rod is in transmission fit with the second support plate.

10. The automobile model clamping method is characterized by comprising the following steps of:

preparing the automobile model clamping device according to any one of claims 1 to 9;

the automobile model clamping device is arranged on a workbench of processing equipment, a plurality of alignment mechanisms are embedded into a T-shaped groove of the workbench, the first transmission rod is regulated to drive the driving block to move, the driving block drives the first sliding block and the second sliding block to prop open along the width direction of the T-shaped groove of the workbench and prop against the two side vertical surfaces of the T-shaped groove of the workbench, and when the outer side end surfaces of the first sliding block and the second sliding block of the alignment mechanisms are completely attached to the side vertical surfaces of the T-shaped groove of the workbench, the coordinate system direction of the automobile model clamping device is consistent with the coordinate system direction of the processing equipment;

the second transmission rod is adjusted, so that the first pressing block is embedded into a T-shaped groove of the workbench in a first posture, and rotates to a second posture around the second transmission rod after the first pressing block stretches into the bottom of the T-shaped groove of the workbench, and the first pressing block is transversely arranged in the T-shaped groove of the workbench and locks the automobile model clamping device on the workbench;

and placing the automobile model on the automobile model clamping device, and positioning the automobile model on the automobile model clamping device by matching with the positioning mechanism.

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