Novel digital display Y-direction centering structure

Abstract

The utility model provides a novel digital display Y-direction centering structure. The novel digital display Y-direction centering structure comprises a pedestal, a guide rail seat, a pressing plate, a sliding block, a positioning block, a zero pin, a locking screw, a guide column, a spring, a dial indicator seat, a dial indicator, a wedge and an adjusting handle, wherein the guide rail seat is fixed above the pedestal, and the sliding block penetrates and extends between the pressing plate and the guide rail seat; the zero pin penetrates through the pressing plate and the sliding block to be installed and used for zero calibration, and the locking screw penetrates through the pressing plate and abuts against the sliding block to be used for locking. The guide column is arranged between the guide rail seat and the dial indicator seat, the spring is sleeved on the guide column, one end of the spring abuts against the dial indicator seat, the other end of the spring pushes the sliding block, the adjusting handle is rotated to drive the wedge, and the head of the wedge pushes the sliding block to achieve Y-direction fine adjustment. According to the utility model, a fine adjustment structure and a digital display reading mode are combined, so that the outer plate can be quickly positioned in the middle without damage, consistency with loading is realized, and the risks of size measurement errors and left-right asymmetry of matching of a product and a vehicle body caused by inaccurate Y-direction positioning of the product are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile assembly, and more specifically to a new type of digital display Y-direction centering structure. Background Art

[0002] On the automobile assembly line, in order to ensure the matching relationship (gap and surface difference) between the rear tailgate (plastic or metal) and the left and right taillights, the rear bumper and the vehicle body, and to avoid assembly defects caused by V-shaped gaps or uneven left and right gaps, Y-direction centering positioning is usually considered when measuring the tailgate product. Generally, in order to be closer to the actual vehicle, the outer panel is centered, which can effectively reduce the error caused by the inner panel positioning and also reduce the difficulty of adjusting the bonding or welding process.

[0003] The positioning methods for automobile tailgates in the prior art are mainly divided into two types: 1) Plastic feeler gauge method: Place the outer panel of the tailgate on the fixture, and pre-set a standard gap of 3 mm between the left and right sides of the outer panel of the tailgate and the corresponding detection blocks. Insert a plastic feeler gauge into the 3-mm gaps on the left and right sides. When the feeler gauges are inserted with the same thickness at the left and right gaps and the part is stably positioned, it is determined that the tailgate is centered; 2) Lever method: Place the outer panel of the tailgate on the fixture, turn the adjusting screw, and the screw moves left and right under the action of the thread, driving the lever assembly to rotate. The positioning points on both sides of the fixture move along the linear guide (Y-direction) under the action of the lever to clamp the outer panel of the tailgate, achieving centering positioning.

[0004] However, the prior art still has the problems that visual and non-destructive measurement cannot be achieved, the Y-direction positioning of the product is inaccurate, which in turn leads to incorrect dimension measurement and the risk of asymmetry in the matching between the product and the vehicle body. Therefore, how to achieve Y-direction centering through visual measurement and rapid adjustment, and at the same time perform non-destructive positioning of the product is an urgent problem to be solved. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a new type of digital display Y-direction centering structure, so as to solve the problems in the prior art that visual and non-destructive measurement cannot be achieved, the Y-direction positioning of the product is inaccurate, which in turn leads to incorrect dimension measurement and the risk of asymmetry in the matching between the product and the vehicle body.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] A novel digital display Y-direction centering structure is provided, including: a base seat, a guide rail seat, a pressing plate, a slider, a positioning block, a zero-position pin, a locking screw, a guide post, a spring, a dial indicator seat, a dial indicator, a wedge and an adjusting handle; wherein, the guide rail seat is fixed above the base seat, the guide rail seat has a U-shaped groove structure penetrating along the Y direction, the pressing plate is matched with the guide rail seat above it, and the slider penetrates and extends between the guide rail seat and the pressing plate; the zero-position pin penetrates through the pressing plate and the slider in sequence for zero calibration, the locking screw penetrates through the pressing plate and abuts against the slider for locking, the positioning block is installed at the first end of the slider for abutting against the product, the dial indicator seat is installed on the base seat for installing the dial indicator, and the measuring rod of the dial indicator abuts against the second end of the slider; the guide post is arranged between the guide rail seat and the dial indicator seat, the spring is sleeved on the guide post, one end of the spring abuts against the dial indicator seat, and the other end pushes the slider, the end of the wedge is connected with the adjusting handle, and by rotating the adjusting handle to drive the wedge, the head of the wedge pushes the slider to realize the Y-direction fine adjustment of the product.

[0008] Preferably, it further includes an insert block, and the insert block is fixed on the base seat by screws and cooperates with the wedge to provide a guiding function for it.

[0009] Preferably, the head of the wedge has a working surface, a top surface and two side surfaces sandwiched between the two, and the included angle between the working surface and the top surface is 15°.

[0010] Preferably, one end of the guide post is in interference fit with the guide rail seat, and the other end is in clearance fit with the dial indicator seat.

[0011] Preferably, the pressing plate is fixed on the guide rail seat by screws, and the cavity formed by the pressing plate and the guide rail seat is in clearance fit with the slider to provide a guiding function for the slider.

[0012] Preferably, the pressing plate has a positioning hole and a locking hole for inserting the zero-position pin and the locking screw respectively.

[0013] Preferably, the positioning block is made of polytetrafluoroethylene material.

[0014] Preferably, the dial indicator seat is fixed on the base seat by screws, and the dial indicator seat is also provided with a protective cover for protecting the dial indicator.

[0015] Preferably, the novel digital display Y-direction centering structure is respectively installed at both ends of the inspection fixture, the positioning block faces the product, and the positioning block contacts the product under the action of the spring, so as to realize the centering adjustment of the product on the inspection fixture.

[0016] Preferably, the pedestal of the novel digital display Y-direction centering structure is fixed to the inspection fixture by screws.

[0017] According to a novel digital display Y-direction centering structure provided by the present utility model, in combination with a fine-tuning structure and a digital display reading method, it can quickly and non-destructively achieve the centering positioning of the outer panel, achieve consistency with vehicle loading, effectively reduce the dimensional measurement errors caused by inaccurate Y-direction positioning of the product, and the risk of asymmetry in the left-right matching between the product and the vehicle body. Secondly, this novel digital display Y-direction centering structure can not only be used for the centering positioning of plastic tailgates and metal tailgates, but also for other products such as engine hoods, front and rear windshield glass, etc. that require centering positioning measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 9 is a perspective view of the digital display Y-direction centering structure provided according to a preferred embodiment of the present utility model;

[0019] Figure 2 FIG. 13 is a schematic cross-sectional view of the digital display Y-direction centering structure;

[0020] Figure 3 FIG. 17 is a top plan view of the digital display Y-direction centering structure;

[0021] Figure 4 FIG. 21 is a schematic view of the fine-tuning structure of the digital display Y-direction centering structure;

[0022] Figure 5 FIG. 25 is a schematic view of the separate structure of the wedge;

[0023] Figure 6 FIG. 29 is a schematic view of the use state of the digital display Y-direction centering structure for the Y-direction centering of the outer panel of the tailgate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as limiting the present utility model.

[0026] Combined with Figure 1 、 Figure 2As shown in the figure, a novel digital display Y-direction centering structure is provided according to a preferred embodiment of the present utility model, including: a cushion base 1, a guide rail base 2, a pressing plate 3, a slider 4, a positioning block 5, a zero-position pin 6, a locking screw 7, a guide post 8, an insert block 9, a spring 10, a dial indicator base 11, a dial indicator 12, a wedge 13, an adjusting handle 14, a cover plate 15, and a protective cover 16.

[0027] Among them, the cushion base 1 is used for fixing on the inspection fixture. The guide rail base 2 is fixed above the cushion base 1. The guide rail base 2 has a U-shaped groove structure penetrating along the Y direction. The pressing plate 3 is fixed above the guide rail base 2 by screws and cooperates with it to form a rectangular groove for the long-strip-shaped slider 4 to slide back and forth therein, and at the same time provides a guiding function for the slider 4. The positioning block 5 is installed at one end of the slider 4 (i.e., Figure 2 the right side in the figure) for abutting against the product. The pressing plate 3 has a positioning hole 31 and a locking hole 32. The slider 4 has a through hole 41 extending vertically. When the zero-position pin 6 passes through the positioning hole 31 on the pressing plate 3 and the through hole 41 on the slider 4 in sequence for installation, it can be used for zero calibration of the dial indicator; when the locking screw 7 is inserted into the locking hole 32 on the pressing plate 3 and abuts against the slider 4, it can be used for locking the positioning block 5.

[0028] The dial indicator base 11 is installed on one side of the cushion base 1 (i.e., Figure 2 the left side in the figure) by screws, used for installing the dial indicator 12 and making the measuring rod of the dial indicator 12 abut against the slider 4. Preferably, a protective cover 16 is also provided on the dial indicator base 11 for protecting the dial indicator 12.

[0029] One end of the guide post 8 (i.e., Figure 2 the right side in the figure) is in interference fit with the guide rail base 2, and the other end (i.e., Figure 2 the left side in the figure) is in clearance fit with the dial indicator base 11. The spring 10 is sleeved on the guide post 8. One end of the spring 10 abuts against the dial indicator base 11, and the other end pushes the slider 4.

[0030] Combined with Figure 3 、 Figure 4 As shown in the figure, the insert block 9 is fixed to the outside of the cushion base 1 by screws. The inner square hole thereof cooperates with the square shell part of the wedge 13 to provide a guiding function for the wedge 13. The end of the wedge 13 is connected to the adjusting handle 14. By rotating the adjusting handle 14, the wedge 13 can be driven, and then the slider 4 can be pushed by its head to achieve fine centering adjustment of the product. A cover plate is also provided on the outside of the insert block 9 to prevent the wedge 13 from falling off.

[0031] As Figure 5 shown in the figure, the head of the wedge 13 has a working surface, a top surface, and two side surfaces sandwiched between the two. The included angle between the working surface and the top surface is 15°.

[0032] Preferably, the positioning block 5 is made of Teflon material to prevent damage to the painted surface of the product.

[0033] According to a preferred embodiment of the present invention, the digital display Y-direction centering structure is respectively fixed on the left and right sides of the plastic tailgate for centering positioning adjustment. It is determined as the centering rule that the left dial indicator reading - the right dial indicator reading ≤ 0.1 mm.

[0034] When using this Y-direction centering structure for centering positioning of the plastic tailgate outer panel, its usage state is as Figure 6 shown, and the usage method is described in detail as follows:

[0035] Step S1, calibration: First, provide a pair of Y-direction centering structures 100 as Figure 1 shown, and install them on the left and right sides of the fixture frame 200 respectively. Specifically, the cushion seat 1 can be fixed on the fixture frame 200 through screws. Then, insert the zero-position pin 6 into the positioning hole 31 on the pressure plate 3 and the through hole 41 on the slider 4 in sequence from above to fix the slider 4 and the guide rail seat 2. Then loosen the locking screw 7, calibrate the positioning block 5 with a three-coordinate measuring machine, measure the profile tolerance of the positioning surface according to the design theoretical data, and it is determined as qualified if the number of points taken on the positioning surface is not less than 4 and the dimensional tolerance is within ±0.05 mm.

[0036] Step S2, zero calibration: After completing the calibration step, press the zero-position button of the dial indicator 12 to make the dial indicator reading display 0.00.

[0037] Step S3, centering adjustment: Place the tailgate 300 on the fixture frame 200 according to the three-coordinate positioning, that is, in the middle of the Y-direction centering structure. Pull out the zero-position pin 6, and the positioning block 5 contacts the two sides of the tailgate under the action of the spring 10. At this time, the dial indicator 12 shows the measured value; tighten or loosen the adjustment handle 14 (i.e., rotate clockwise or counterclockwise), drive the wedge 13, and then push the slider 4. Observe the difference in the readings of the left and right dial indicators 12 until the difference between the left and right dial indicator readings ≤ 0.1 mm, then it can be determined that the tailgate 300 is centered at this time.

[0038] Step S4, locking and fixing: Tighten the locking screw 7 to fix the positioning block 5, complete the centering positioning, and start measuring the tailgate.

[0039] It should be understood that the present invention is not limited to the centering of the tailgate, and can also be used for other products that require centering positioning measurement, such as the engine hood, front and rear windshield glass, etc.

[0040] The above are only the preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Various changes can be made to the above embodiments of the present utility model. All simple, equivalent changes and modifications made according to the claims and the content of the specification of the present utility model application fall within the scope of protection of the claims of the present utility model patent. Those not described in detail in the present utility model are all conventional technical contents.

Claims

1. A new digital display Y-axis centering structure, characterized in that: include: Seat, guide rail seat, pressure plate, slide block, positioning block, zero pin, locking screw, guide column, spring, dial indicator seat, dial indicator, wedge and adjustment handle; among which, The guide rail seat is fixed above the pad, and the guide rail seat has a U-shaped groove structure that penetrates along the Y direction. The pressure plate cooperates with the guide rail seat above the guide rail seat, and the slider extends through the guide rail seat and the pressure plate; the zero pin penetrates the pressure plate and the slider in turn for zeroing, the locking screw penetrates the pressure plate and abuts against the slider for locking, the positioning block is installed at the first end of the slider for abutting against the product, the dial indicator seat is installed on the pad for installing the dial indicator, and the measuring rod of the dial indicator abuts against the second end of the slider; the guide column is arranged between the guide rail seat and the dial indicator seat, the spring is sleeved on the guide column, one end of the spring supports the dial indicator seat, and the other end pushes the slider, the end of the inclined wedge is connected to the adjustment handle, and the inclined wedge is driven by rotating the adjustment handle so that the head of the inclined wedge pushes the slider to achieve Y-direction fine-tuning of the product.

2. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: It also includes an insert, which is fixed on the cushion seat by screws and cooperates with the inclined wedge to provide a guiding function for it.

3. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The head of the inclined wedge has a working surface, a top surface and two side surfaces sandwiched therebetween, and the angle between the working surface and the top surface is 15°.

4. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: One end of the guide post is interference fit with the guide rail seat, and the other end is clearance fit with the dial indicator seat.

5. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The pressing plate is fixed to the guide rail seat by screws, and the cavity formed by the pressing plate and the guide rail seat forms a clearance fit with the sliding block, providing a guiding function for the sliding block.

6. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The pressing plate is provided with a positioning hole and a locking hole, which are used for inserting a zero position pin and a locking screw respectively.

7. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The positioning block is made of polytetrafluoroethylene material.

8. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The dial gauge seat is fixed on the cushion seat by screws, and the dial gauge seat is also provided with a protective cover for protecting the dial gauge.

9. The novel digital display Y-axis centering structure according to claim 1 is characterized in that: The novel digital display Y-axis centering structure is respectively installed at both ends of the gauge, and the positioning block faces the product, so that the positioning block contacts the product under the action of the spring, thereby realizing the centering adjustment of the product on the gauge.

10. The novel digital display Y-axis centering structure according to claim 9 is characterized in that: The novel digital display Y-axis centering structure base is fixed on the inspection fixture by screws.

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