Positioning fixtures, assembly devices and workpiece machining methods

Abstract

This invention discloses a positioning fixture, an assembly device, and a workpiece processing method. The positioning fixture includes a fixture base, which includes a base body and a positioning component disposed on the base body. The base body has a positioning surface for placing a first workpiece. The positioning component connects the first workpiece and a second workpiece, allowing the first and second workpieces to be spaced apart, and the positioning fixture restricts the relative movement of the second and first workpieces. When the first workpiece is placed on the positioning surface, its downward movement is restricted. Because the positioning component is connected to both the first and second workpieces, the movement of the second workpiece relative to the first workpiece is restricted, ensuring a gap between them. This allows the positioning fixture to locate both the first and second workpieces without them contacting each other, facilitating subsequent dispensing and curing of adhesive on both workpieces using a dispensing machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prism assembly, in particular to a positioning tool, an assembly device and a workpiece processing method. BACKGROUND

[0002] The existing DLP (English full name: Digital Light Processing, Chinese full name: Digital Light Processing) project prism assembly method is product structure positioning, limiting, supporting, and then assembling tooling assistance, and then dispensing fixing. In addition, the prism assembly method also uses a laser collimator to debug and confirm the prism assembly position and angle, but this assembly method is low in efficiency.

[0003] For the PGU (English full name: Picture Generation Unit, Chinese full name: Image Generation Unit) project in which the prism is completely suspended and assembled, since the prism has no direct contact with the product structure, it cannot be positioned, limited and supported by the product structure through the traditional assembly method, so the existing DLP prism assembly method is not applicable to the PGU project in which the prism is completely suspended and assembled.

[0004] In view of this, it is necessary to provide a new positioning tool, an assembly device and a workpiece processing method to solve or at least alleviate the above technical defects. SUMMARY

[0005] The main purpose of the present application is to provide a positioning tool, an assembly device and a workpiece processing method, which aims to solve the technical problem that the assembly project in which the prism does not contact the product structure cannot be assembled by the traditional DLP assembly method.

[0006] In order to achieve the above purpose, the present application provides a positioning tool, which comprises:

[0007] A tool base, the tool base comprising a seat body and a positioning assembly provided on the seat body, the seat body being provided with a positioning surface for placing a first workpiece;

[0008] The positioning assembly is used to connect the first workpiece and a second workpiece, so that the first workpiece and the second workpiece are arranged at intervals, and the positioning tool can limit the relative movement of the second workpiece and the first workpiece.

[0009] In an embodiment, the positioning assembly comprises a first positioning part and a second positioning part, the first positioning part being used to connect the first workpiece to limit the movement of the first workpiece in a first direction and a second direction perpendicular to the first direction;

[0010] The second positioning part is used to connect with the second workpiece so that the second workpiece is spaced apart from the first workpiece, and the second positioning part can restrict the movement of the second workpiece relative to the first workpiece.

[0011] In one embodiment, the first positioning part includes a first baffle and a second baffle, the first baffle extending along the first direction to restrict the first workpiece from moving along the second direction, and the second baffle restricting the first workpiece from moving along the first direction.

[0012] In one embodiment, the second baffle extends along the second direction.

[0013] In one embodiment, the second positioning part includes a positioning groove, which is spaced apart from the positioning surface. The groove wall is used to abut against the second workpiece to restrict the movement of the second workpiece relative to the first workpiece.

[0014] In one embodiment, the positioning groove extends along a third direction, the first direction, the second direction, and the third direction are arranged perpendicular to each other, and the number of positioning grooves is at least two, with at least two positioning grooves spaced apart.

[0015] In one embodiment, the seat body is further provided with a limiting surface, which is used to abut against the second workpiece to restrict the second workpiece from moving toward the position of the first workpiece along a third direction, wherein the first direction, the second direction and the third direction are arranged perpendicular to each other.

[0016] In one embodiment, the seat body includes a base and a boss disposed on the base, the top surface of the boss is provided with the positioning surface, and the top surface of the base is provided with the limiting surface.

[0017] In one embodiment, the positioning surface is provided with a vacuum hole.

[0018] In one embodiment, there are multiple vacuum holes, which are spaced apart.

[0019] In addition, the present invention also provides an assembly apparatus, the assembly apparatus including a dispensing machine and the positioning fixture described above, the dispensing machine being used to form an adhesive layer between the first workpiece and the second workpiece, one side of the adhesive layer being used to bond to the first workpiece, and the other side of the adhesive layer being used to bond to the second workpiece.

[0020] Furthermore, the present invention also provides a workpiece processing method, wherein the positioning fixture further includes a fixture cover, and the seat body is further provided with a limiting surface. The workpiece processing method is applied to the above-mentioned positioning fixture, and the workpiece processing method includes:

[0021] Place the first workpiece on the positioning surface;

[0022] The second workpiece is placed on the limiting surface so that the first workpiece and the second workpiece are spaced apart.

[0023] Place the tooling cover on the top surface of the second workpiece;

[0024] The dispensing machine is controlled to dispense and cure adhesive onto the first workpiece and the second workpiece.

[0025] In the above technical solution of the present invention, a first workpiece is placed on a positioning surface, and the downward movement of the first workpiece is restricted by the positioning surface. Since the positioning component is connected to the first and second workpieces, the movement of the second workpiece relative to the first workpiece is restricted, ensuring that there is a gap between the first and second workpieces. Thus, the positioning of the first and second workpieces is achieved by the positioning fixture without the first and second workpieces contacting each other, thereby facilitating the subsequent dispensing and curing of adhesive on the first and second workpieces by a dispensing machine. The first workpiece can be a prism, and the second workpiece can be a photomechanical body. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the positioning tooling according to an embodiment of the present invention;

[0028] Figure 2 This is a side view of a positioning fixture according to an embodiment of the present invention;

[0029] Figure 3 This is a top view schematic diagram of a positioning tooling according to an embodiment of the present invention;

[0030] Figure 4 This is a flowchart illustrating the first embodiment of the workpiece processing method of the present invention.

[0031] Explanation of icon numbers:

[0032] 1 Positioning tool 11 Tool base 111 Seat body 1111 Base 1112 Boss 1113 Positioning surface 1114 Limiting surface 1115 Vacuum extraction hole 112 Positioning assembly 1121 First positioning portion 11211 First baffle 11212 Second baffle 1122 Second positioning portion 11221 Positioning groove

[0033] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, forward, and backward) in the embodiments of this invention are only used to interpret a specific posture (as shown in the attached diagram). Figure 1 The relative positions and movements of the components shown below are considered. If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of that feature.

[0037] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0038] This invention provides a positioning fixture 1, in one embodiment, as follows: Figures 1-3 As shown, the positioning fixture 1 includes a fixture base 11, which includes a base body 111 and a positioning component 112 disposed on the base body 111. The base body 111 is provided with a positioning surface 1113 for placing a first workpiece. The positioning component 112 is used to connect the first workpiece and the second workpiece so that the first workpiece and the second workpiece are spaced apart, and the positioning fixture 1 can restrict the relative movement of the second workpiece and the first workpiece.

[0039] In this design, the first workpiece is placed on the positioning surface 1113, which restricts its downward movement. Since the positioning component 112 is connected to both the first and second workpieces, it restricts the second workpiece from rotating relative to the first workpiece, from moving relative to the first workpiece in a plane parallel to the positioning surface 1113, and from moving towards the first workpiece (i.e., restricting its downward movement). This ensures a constant gap between the first and second workpieces, achieving positioning of both without contact (i.e., without relying on the second workpiece for positioning). This facilitates subsequent dispensing and curing of adhesive onto the first and second workpieces using a dispensing machine. The first workpiece can be a prism, and the second workpiece can be a photomechanical body.

[0040] Furthermore, in one embodiment, the positioning component 112 includes a first positioning part 1121 and a second positioning part 1122. The first positioning part 1121 is used to connect with the first workpiece to restrict the movement of the first workpiece along a first direction and a second direction perpendicular to the first direction. The second positioning part 1122 is used to connect with the second workpiece so that the second workpiece is spaced apart from the first workpiece, and the second positioning part 1122 can restrict the movement of the second workpiece relative to the first workpiece. By setting the first positioning part 1121, which is used to abut against the prism, the prism is restricted to move to the left and backward. By setting the second positioning part 1122, which is used to abut against the second workpiece, the second workpiece is restricted to move downward relative to the first workpiece, to move to the left relative to the first workpiece, to move to the right relative to the first workpiece, to move forward relative to the first workpiece, to move backward relative to the first workpiece, and to rotate relative to the first workpiece. This effectively improves the positioning accuracy between the first and second workpieces and avoids relative movement and rotation of the first and second workpieces during the dispensing process.

[0041] like Figure 2 and Figure 3 As shown, in one embodiment, the first positioning part 1121 includes a first baffle 11211 and a second baffle 11212. The first baffle 11211 extends along a first direction to restrict the movement of the first workpiece along a second direction, and the second baffle 11212 restricts the movement of the first workpiece along the first direction. The first baffle 11211 extends along the first direction, which is... Figure 1 The front and back directions are shown, and the second direction is... Figure 1As shown in the left-right direction, this arrangement effectively increases the contact area between the first baffle 11211 and the prism, thereby enhancing the positioning effect of the first baffle 11211 on the prism. The first baffle 11211, by abutting against the edge of the prism, restricts the prism located on the positioning surface 1113 from moving to the left; the second baffle 11212, by abutting against the edge of the prism, restricts the prism located on the positioning surface 1113 from moving backward. It should be noted that by abutting the prism against the first baffle 11211 and the second baffle 11212, the placement position of the prism can be easily and quickly determined, and the first baffle 11211 and the second baffle 11212 also play a certain limiting role for the prism.

[0042] Furthermore, in one embodiment, the second baffle 11212 extends along a second direction. The extension of the second baffle 11212 along the second direction increases the contact area between the second baffle 11212 and the prism, thereby enhancing the positioning effect of the second baffle 11212 on the prism.

[0043] In one embodiment, the second positioning part 1122 includes a positioning groove 11221, which is spaced apart from the positioning surface 1113. The groove wall of the positioning groove 11221 is used to abut against the second workpiece to restrict the movement of the second workpiece relative to the first workpiece. A portion of the second workpiece is inserted into the positioning groove 11221. The abutment between the second workpiece and the groove wall of the positioning groove 11221 restricts the rotation and movement of the second workpiece relative to the first workpiece. It should be noted that the second positioning groove 11221 can be a spline groove, meaning the second workpiece can engage with the positioning groove 11221 via a spline, thereby restricting the movement and rotation of the second workpiece relative to the first workpiece. Furthermore, the bottom wall of the positioning groove 11221 restricts the downward movement of the second workpiece.

[0044] like Figures 1-3 As shown, in one embodiment, the positioning groove 11221 extends along a third direction, and the first direction, the second direction, and the third direction are arranged perpendicularly to each other in pairs. The number of positioning grooves 11221 is at least two, and the at least two positioning grooves 11221 are spaced apart. The third direction is... Figure 1 In the vertical direction shown, at least two positioning slots 11221 are provided, and each positioning slot 11221 abuts against a portion of the body of the second workpiece, thereby restricting the movement and rotation of the second workpiece relative to the first workpiece; and the portion of the body of the second workpiece is directly inserted into the positioning slot 11221, which is simple to operate and reliable in positioning.

[0045] Furthermore, in one embodiment, the base body 111 is also provided with a limiting surface 1114, which abuts against the second workpiece to restrict the second workpiece from moving towards the first workpiece along a third direction. The first direction, the second direction, and the third direction are arranged perpendicularly to each other. By setting the limiting surface 1114 to abut against the bottom surface of the second workpiece, the downward movement of the second workpiece is restricted, thereby ensuring that the distance between the first and second workpieces remains unchanged. It should be noted that when the base body 111 is also provided with a limiting surface 1114, the second positioning part 1122 can be a positioning groove 11221 or a positioning hole.

[0046] It should be noted that the design of the positioning fixture 1 is determined by the relative position of the prism and the main body of the optical engine, as well as the design tolerance and design allowance. The critical dimensional tolerance zone of the positioning fixture 1 should be controlled to be less than 0.02mm.

[0047] In another embodiment, the base body 111 includes a base 1111 and a boss 1112 disposed on the base 1111. The top surface of the boss 1112 is provided with a positioning surface 1113, and the top surface of the base 1111 is provided with a limiting surface 1114. The boss 1112 is disposed on the top of the base 1111 and protrudes from the base 1111, which allows the prism located on the positioning surface 1113 to be suspended in the air and facilitates the removal of the prism after the adhesive has been applied and cured.

[0048] In one embodiment, the positioning surface 1113 is provided with a vacuum hole 1115. By providing a vacuum hole on the positioning surface 1113, air can be extracted from the vacuum hole 1115 by a vacuum pump, so that the prism located on the positioning surface 1113 is adsorbed on the positioning surface 1113, thereby preventing the prism from moving relative to the optical engine body during the dispensing process.

[0049] Furthermore, in one embodiment, there are multiple vacuum holes 1115, which are spaced apart. By providing multiple vacuum holes 1115, the adsorption strength of the vacuum pump on the prism is increased, further preventing the prism from moving relative to the optical engine body during the dispensing process.

[0050] Furthermore, the present invention also provides an assembly apparatus, which includes a dispensing machine and the aforementioned positioning fixture 1. The dispensing machine is used to form an adhesive layer between a first workpiece and a second workpiece. One side of the adhesive layer is used to bond to the first workpiece, and the other side of the adhesive layer is used to bond to the second workpiece. Since this assembly apparatus adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0051] In addition, the present invention also provides a workpiece processing method, referring to Figure 4 As shown,Figure 4 This is a flowchart illustrating a first embodiment of the workpiece processing method of the present invention. The positioning fixture further includes a fixture cover, and the base body is further provided with a limiting surface. The workpiece processing method is applied to the above-mentioned positioning fixture, and the workpiece processing method includes:

[0052] S100, Place the first workpiece on the positioning surface;

[0053] The first workpiece can be a prism. Taking a prism as an example, the prism is placed on the positioning surface. The placement position of the prism is determined by abutting the prism with the first baffle and the second baffle. The first baffle and the second baffle can also restrict the movement of the prism.

[0054] S200, the second workpiece is placed on the limiting surface so that the first workpiece and the second workpiece are spaced apart;

[0055] By placing the second workpiece on the limiting surface so that the limiting surface abuts against the bottom surface of the second workpiece, the downward movement of the second workpiece is restricted. Since the first workpiece is restricted downward by the positioning surface, the distance between the first workpiece and the second workpiece remains unchanged.

[0056] S300, the tooling cover is pressed onto the top surface of the second workpiece;

[0057] By pressing the tooling cover onto the top surface of the second workpiece, the movement of the second workpiece away from the first workpiece is restricted, further preventing the distance between the first and second workpieces from changing during the dispensing process.

[0058] S400, control the dispensing machine to dispense and cure adhesive on the first workpiece and the second workpiece.

[0059] An adhesive layer is formed between the first workpiece and the second workpiece using a dispensing machine. The adhesive layer is bonded to the first workpiece on the side facing the first workpiece, and to the second workpiece on the side facing the second workpiece.

[0060] The first workpiece is placed on the positioning surface, which restricts its downward movement. Since the positioning component is connected to the first and second workpieces, it restricts the second workpiece from rotating relative to the first workpiece, from moving relative to the first workpiece in a plane parallel to the positioning surface, and from moving towards the first workpiece, i.e., restricts its downward movement. This ensures that there is a gap between the first and second workpieces and that the size of the gap remains constant. Thus, the positioning of the first and second workpieces is achieved by the positioning fixture without the first workpiece being in contact with the second workpiece, i.e., without the first workpiece relying on the second workpiece for positioning. Then, the first and second workpieces are glued and cured by a dispensing machine. This achieves positioning and glue curing of the prism when it is suspended and spaced apart from the optical engine body.

[0061] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A positioning fixture, characterized by, The utility model provides a positioning tool and a workpiece processing method, and the positioning tool comprises a tool base and a positioning assembly arranged on the tool base, the tool base is provided with a positioning surface for placing a first workpiece, and the positioning assembly is used for connecting the first workpiece and a second workpiece to arrange the first workpiece and the second workpiece at intervals and enable the positioning tool to limit the relative movement of the second workpiece and the first workpiece. The positioning assembly comprises a first positioning part and a second positioning part, the first positioning part is used for connecting the first workpiece to limit the movement of the first workpiece in a first direction and a second direction perpendicular to the first direction, and the second positioning part is used for connecting the second workpiece to arrange the second workpiece at intervals from the first workpiece and enable the second positioning part to limit the movement of the second workpiece relative to the first workpiece. The first positioning part comprises a first baffle and a second baffle, the first baffle extends in the first direction to limit the movement of the first workpiece in the second direction, and the second baffle is used to limit the movement of the first workpiece in the first direction. The positioning surface is provided with vacuum holes. The first workpiece is a prism, and the second workpiece is a light machine body. The second positioning part comprises a positioning groove arranged at intervals from the positioning surface, and the groove wall of the positioning groove is used to abut against the second workpiece to limit the movement of the second workpiece relative to the first workpiece. The tool base is provided with a limiting surface abutting against the bottom surface of the second workpiece to limit the downward movement of the second workpiece, and the tool base comprises a base and a boss arranged on the base, the top surface of the boss is provided with the positioning surface, and the top surface of the base is provided with the limiting surface. The first baffle is connected with the boss, the second baffle is connected with the base, and the positioning groove is arranged on the base. The second baffle extends in the second direction. The positioning groove extends in a third direction, the first direction, the second direction and the third direction are arranged at intervals from each other, the number of the positioning grooves is at least two, and the at least two positioning grooves are arranged at intervals. The number of the vacuum holes is multiple, and the multiple vacuum holes are arranged at intervals.

2. The positioning tool of claim 1, wherein The assembly device comprises a dispensing machine and the positioning tool according to any one of claims 1-4, the dispensing machine is used to form an adhesive layer between the first workpiece and the second workpiece, one side of the adhesive layer is used to adhere to the first workpiece, and the other side of the adhesive layer is used to adhere to the second workpiece.

3. The positioning tool of claim 1, wherein The positioning tool further comprises a tool cover, the tool base is further provided with a limiting surface, the workpiece processing method is applied to the positioning tool according to any one of claims 1-4, and the workpiece processing method comprises the following steps.

4. The positioning tool according to any one of claims 1 to 3, wherein Placing the first workpiece on the positioning surface; 5. An assembly device characterized by Placing the second workpiece on the limiting surface to arrange the first workpiece and the second workpiece at intervals; 6. A workpiece processing method, characterized by, Pressing the tool cover on the top surface of the second workpiece; Controlling the dispensing machine to dispense and solidify the first workpiece and the second workpiece. ​ ​ ​

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