Correction mechanism

Abstract

The utility model relates to the technical field of correction devices, and particularly discloses a correction mechanism which is used for correcting a grinding mechanism comprising a clamp and a grinding module and comprises a base, a correction frame, a limiting assembly, a supporting assembly and a positioning piece. The base is used for bearing the grinding module; the correction frame is arranged on the base, and a correction space is formed between the correction frame and the base; the limiting assembly is arranged on the base and located in the correction space, and the limiting assembly is used for abutting against and limiting the grinding module; the supporting assembly is arranged on the correcting frame and extends into the correcting space, and the part, extending into the correcting space, of the supporting assembly is used for supporting the clamp; the positioning piece penetrates through the correcting frame and is used for being inserted into and positioning the clamp so as to correct the relative position of the clamp and the polishing module. According to the correcting mechanism, it can be guaranteed that the positions, installed on the clamp, of the grinding modules replaced every time are always kept consistent, and therefore the precision of replacing the grinding modules and the grinding efficiency of the grinding modules are improved.

Description

Technical Field

[0001] The present application relates to the technical field of correction devices, and in particular to a correction mechanism. Background Art

[0002] Currently, in the process of automated polishing, the polishing module is usually fixed to a mobile mechanism such as a robotic arm through a fixture, and the mobile mechanism drives the polishing module through the fixture to move and polish the product. However, when the polishing module needs to be replaced due to damage or maintenance, the installation position cannot be controlled, and the position of the replaced polishing module installed on the fixture cannot be consistent, resulting in low precision of the replacement polishing module. In addition, when the position of the replaced polishing module installed on the fixture is inconsistent, the operating procedure of the mobile mechanism needs to be adjusted to ensure that the polishing module can work accurately, resulting in low polishing efficiency of the polishing module. Utility Model Content

[0003] In view of the above, it is necessary to propose a correction mechanism to improve the accuracy of replacing the grinding module and improve the grinding efficiency of the grinding module.

[0004] An embodiment of the present application provides a correction mechanism for calibrating a grinding mechanism including a fixture and a grinding module, the correction mechanism including a base, a correction frame, a limit assembly, a support assembly and a positioning member; the base is used to support the grinding module; the correction frame is arranged on the base, and a correction space is provided between the correction frame and the base; the limit assembly is arranged on the base and located in the correction space, and the limit assembly is used to abut and limit the grinding module; the support assembly is arranged on the correction frame and extends into the correction space, and the part of the support assembly extending into the correction space is used to support the fixture; the positioning member is passed through the correction frame, and the positioning member is used to insert and position the fixture to correct the relative positions of the fixture and the grinding module.

[0005] The calibration mechanism of the embodiment of the present application is configured to ensure that the position of the polishing module installed on the fixture remains consistent each time the polishing module is replaced, by providing a limit assembly to abut against the limit polishing module, providing a support assembly to support the fixture, and providing a positioning member to be inserted into and position the fixture. The calibration mechanism can thus ensure that the position of the polishing module installed on the fixture remains consistent each time the polishing module is replaced, thereby improving the accuracy of the replacement of the polishing module. In addition, since the position of the polishing module installed on the fixture remains consistent each time the polishing module is replaced, there is no need to adjust the operating procedures of the mobile mechanism (not shown) such as the robotic arm connected to the fixture to ensure that the polishing module can operate accurately, thereby reducing the maintenance time of the polishing module and improving the polishing efficiency of the polishing module.

[0006] In some embodiments, the limiting assembly includes a first limiting member and a second limiting member, the first limiting member is provided on the base and extends along a first direction, the second limiting member is provided on the base and extends along a second direction, and the second limiting member is provided adjacent to the first limiting member, wherein the first direction and the second direction are perpendicular to each other.

[0007] In some embodiments, the first limit member and the second limit member are detachably provided on the base, and the limit assembly further includes a first positioning pin and a second positioning pin, the first positioning pin is passed through the first limit member and inserted into the base to position the first limit member relative to the base, and the second positioning pin is passed through the second limit member and inserted into the base to position the second limit member relative to the base.

[0008] In some embodiments, the support assembly includes a support member and an adjusting member, the support member is arranged in the correction space and located above the limit assembly, the support member is used to support the clamp, the adjusting member is passed through the correction frame and connected to the support member, and the adjusting member is used to drive the support member to move to adjust the distance between the support member and the limit assembly.

[0009] In some embodiments, the support member includes a supporting portion and an abutting portion, the supporting portion is used to support the clamp, the adjusting member is connected to the supporting portion, and the abutting portion is vertically connected to the supporting portion and extends toward one side of the correction frame toward the limiting assembly.

[0010] In some embodiments, the support components are divided into multiple groups, and the multiple groups of support components are arranged at intervals. The support members of the multiple groups of support components and the correction frames form a channel for the clamp to pass through, and the positioning member extends into the channel.

[0011] In some embodiments, the correction mechanism further includes a pressing member, which is passed through the correction frame and spaced apart from the positioning member, and is used to abut against and press the clamp.

[0012] In some embodiments, the correction frame includes a correction seat and multiple connecting parts, the correction seat is spaced apart from the base, and multiple connecting parts are spaced apart between the correction seat and the base, and the two ends of each connecting part are respectively connected to the correction seat and the base, the base, the multiple connecting parts and the correction seat enclose the correction space, and the support assembly and the positioning part are both arranged on the correction seat.

[0013] In some embodiments, the correction mechanism further includes a clamping assembly, which is disposed on the base and located in the correction space, and the clamping assembly is located on one side of the limiting assembly, and the clamping assembly is used to press the polishing module against the limiting assembly.

[0014] In some embodiments, the clamping assembly includes a mounting member and a clamping member, the mounting member is provided on the base and is located on one side of the limiting assembly, the clamping member is passed through the mounting member and extends toward the limiting assembly, and the clamping member is used to move toward the limiting assembly under the action of external force to press the grinding module against the limiting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the correction mechanism provided in the embodiment of the present application and the applicable polishing mechanism.

[0016] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the correction mechanism shown.

[0017] Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the correction mechanism shown.

[0018] Description of main component symbols

[0019] Correction mechanism 100; base 10; correction space 11; correction frame 20; correction seat 21; through hole 211; adjustment hole 212; connecting hole 213; connecting member 22; limiting assembly 30; first limiting member 31; first limiting hole 311; first mounting hole 312; second limiting member 32; second limiting hole 321; second mounting hole 322; first positioning pin 33; second positioning pin 34; first assembly part 35; second assembly part 36; support assembly 40; support member 41; support portion 411; abutting portion 412; adjusting member 42; channel 43; positioning member 50; pressing member 60; clamping assembly 70; mounting member 71; insertion hole 711; pressing member 72; grinding mechanism 800; grinding module 810; clamp 820; clamp 8201. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0021] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, or mutual communication; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] See Figure 1 The embodiment of the present application provides a correction mechanism 100, which is used to correct a grinding mechanism 800 including a grinding module 810 and a fixture 820. The grinding module 810 can be a wind mill, an electric grinder, etc. For ease of understanding, the embodiment of the present application takes the grinding module 810 as an example of a wind mill, and defines the first direction as Figure 1 and Figure 2 The X-axis direction is shown, and the second direction is Figure 1 and Figure 2 In the Y-axis direction shown, the first direction and the second direction are perpendicular to each other. Obviously, this is not a limitation of the embodiments of the present application.

[0025] See Figure 1 and Figure 2In this embodiment, the correction mechanism 100 includes a base 10, a correction frame 20, a limiting assembly 30, a support assembly 40, and a positioning member 50. The base 10 is used to support the polishing module 810; the correction frame 20 is provided on the base 10, and a correction space 11 is defined between the correction frame 20 and the base 10; the limiting assembly 30 is provided on the base 10 and is located in the correction space 11, and the limiting assembly 30 is used to abut against the limiting polishing module 810; the support assembly 40 is provided on the correction frame 20 and extends into the correction space 11, and the portion of the support assembly 40 extending into the correction space 11 is used to support the fixture 820; the positioning member 50 is provided through the correction frame 20, and the positioning member 50 is used to insert and position the fixture 820 to correct the relative position of the fixture 820 and the polishing module 810.

[0026] When replacing the polishing module 810, the polishing module 810 is first placed on the base 10 and abutted against the limit assembly 30, which limits the position of the polishing module 810. Then, the clamp 820 is placed on the support assembly 40, and the positioning member 50 is inserted into the positioning hole (not shown) provided in the clamp 820 to position the clamp 820. After that, the clamp 820 is connected to the polishing module 810. In this way, the calibration mechanism 100 can ensure that the position of the polishing module 810 installed on the clamp 820 is always consistent each time it is replaced, thereby improving the accuracy of replacing the polishing module 810. In addition, since the position of the replaced grinding module 810 installed on the fixture 820 remains consistent each time, there is no need to adjust the operating procedures of the moving mechanism such as the robotic arm connected to the fixture 820 (not shown) to ensure that the grinding module 810 can work accurately, thereby reducing the maintenance time of the grinding module 810 and improving the grinding efficiency of the grinding module 810.

[0027] In this embodiment, the clamp 820 is provided with a clamp 8201, and the clamp 820 is connected to the polishing module 810 via the clamp 8201. In other embodiments, the clamp 820 can be clamped or bolted to the polishing module 810, which is not specifically limited in this embodiment of the application.

[0028] Please refer to Figure 3 In this embodiment, the correction frame 20 includes a correction seat 21 and a plurality of connecting members 22. The plurality of connecting members 22 are all rod-shaped, and the correction seat 21 is spaced apart from the base 10. The plurality of connecting members 22 are spaced apart between the correction seat 21 and the base 10, and the two ends of each connecting member 22 are respectively connected to the correction seat 21 and the base 10. The base 10, the plurality of connecting members 22 and the correction seat 21 enclose a correction space 11, and the support assembly 40 and the positioning member 50 are both provided on the correction seat 21. In this way, it is convenient to install the support assembly 40 and the positioning member 50, and it is beneficial to improve the compactness of the overall structure of the correction mechanism 100.

[0029] In this embodiment, a through hole 211 communicating with the calibration space 11 is formed on the calibration seat 21 , and the positioning member 50 passes through the through hole 211 to be inserted into and position the fixture 820 .

[0030] In this embodiment, the limiting assembly 30 includes a first limiting member 31 and a second limiting member 32. The first limiting member 31 and the second limiting member 32 are both block-shaped. The first limiting member 31 is disposed on the base 10 and extends along the first direction. The second limiting member 32 is disposed on the base 10 and extends along the second direction. The second limiting member 32 is disposed adjacent to the first limiting member 31. When the limiting assembly 30 abuts against the limiting polishing module 810, the first limiting member 31 and the second limiting member 32 respectively abut against the adjacent side walls of the polishing module 810, thereby enabling the limiting assembly 30 to limit the polishing module 810 from the first direction and the second direction, thereby facilitating improved accuracy of the limiting assembly 30 abutting against the limiting polishing module 810.

[0031] In this embodiment, the first and second limiting members 31, 32 are detachably mounted on the base 10. The limiting assembly 30 further includes a first positioning pin 33 and a second positioning pin 34. The first positioning pin 33 is disposed through the first limiting member 31 and inserted into the base 10 to position the first limiting member 31 relative to the base 10. The second positioning pin 34 is disposed through the second limiting member 32 and inserted into the base 10 to position the second limiting member 32 relative to the base 10. By providing the first and second limiting members 31, 32 as detachable members on the base 10, it is convenient to replace different first and second limiting members 31, 32 when positioning different types of polishing modules 810. The provision of the first and second positioning pins 33 and 32, respectively, to position the first and second limiting members 31, 32, helps improve the accuracy of the installation of the first and second limiting members 31, 32 on the base 10, thereby improving the accuracy of the contact between the limiting assembly 30 and the polishing module 810.

[0032] In this embodiment, a first limiting hole 311 and a second limiting hole 321 are respectively provided on the first limiting member 31 and the second limiting member 32. The first positioning pin 33 is passed through the first limiting hole 311 and inserted into the base 10. The second limiting pin is passed through the second limiting hole 321 and inserted into the base 10.

[0033] In this embodiment, the first limiting member 31 and the second limiting member 32 are further provided with a first mounting hole 312 and a second mounting hole 322, respectively. The limiting assembly 30 further includes a first assembly part 35 and a second assembly part 36. The first assembly part 35 and the second assembly part 36 can both be bolts, and the first mounting hole 312 and the second mounting hole 322 can both be threaded holes. After the first positioning pin 33 and the second limiting pin respectively position the first limiting member 31 and the second limiting member 32, the first assembly part 35 is connected to the base 10 through the first mounting hole 312, and the second assembly part 36 is connected to the base 10 through the second mounting hole 322. This prevents the first limiting member 31 and the second limiting member 32 from falling off the base 10 when the correction mechanism 100 is moved.

[0034] See also Figure 2 and Figure 3 In this embodiment, the support assembly 40 includes a support member 41 and an adjusting member 42. The support member 41 is arranged in the correction space 11 and is located above the limiting assembly 30. The support member 41 is used to support the clamp 820. The adjusting member 42 is passed through the correction frame 20 and connected to the support member 41. The adjusting member 42 is used to drive the support member 41 to move to adjust the distance between the support member 41 and the limiting assembly 30. Specifically, the adjusting member 42 can be an adjusting bolt. The correction seat 21 is provided with an adjusting hole 212 that is connected to the correction space 11. The adjusting member 42 is connected to the support member 41 through the adjusting hole 212. When the support height of the support member 41 needs to be adjusted, the distance between the support member 41 and the limiting assembly 30 can be adjusted by screwing the adjusting member 42, thereby adjusting the support height of the support member 41. In this way, it is convenient to adjust the support height of the support assembly 40 according to different clamps 820.

[0035] In some other embodiments, the adjusting member 42 can also be connected to a driving member such as a cylinder (not shown), and drive the supporting member 41 to move under the drive of the driving member, and can also adjust the supporting height of the supporting member 41. This embodiment of the present application does not make specific limitations on this.

[0036] In this embodiment, the support member 41 includes a support portion 411 and an abutment portion 412. The support portion 411 is used to support the clamp 820, the adjustment member 42 is connected to the support portion 411, and the abutment portion 412 is vertically connected to the support portion 411 and extends toward the correction frame 20 toward one side of the limit assembly 30. Specifically, the abutment portion 412 extends toward the correction seat 21. In this way, the shape of the support member 41 is "L"-shaped, which facilitates supporting the clamp 820. In addition, when the adjustment member 42 drives the support member 41 to move so that the abutment portion 412 abuts against the correction seat 21, the connection between the abutment portion 412 and the correction seat 21 and the connection between the adjustment member 42 and the correction seat 21 can form two fulcrums, thereby preventing the support member 41 from shaking, which is beneficial to improving the stability of the support member 41 supporting the clamp 820.

[0037] In this embodiment, multiple support assemblies 40 are provided, each of which is spaced apart. The support members 41 of the multiple support assemblies 40 and the calibration frame 20 define a passage 43 for the passage of the clamp 820, and the positioning member 50 extends into the passage 43. The multiple support assemblies 40 provide multi-point support for the clamp 820, thereby improving the stability of the clamp 820. Furthermore, the provision of the passage 43 facilitates the movement of the clamp 820 onto the multiple support assemblies 40 and facilitates the separation of the clamp 820 from the multiple support assemblies 40.

[0038] See also Figure 1 、 Figure 2 and Figure 3 In this embodiment, the correction mechanism 100 further includes a pressing member 60, which is passed through the correction frame 20 and spaced apart from the positioning member 50. The pressing member 60 is used to abut and press the clamp 820. Specifically, a connection hole 213 connected to the correction space 11 is provided on the correction seat 21. The pressing member 60 can be a bolt, and the pressing member 60 is threadedly connected to the connection hole 213. When the clamp 820 is supported on the support assembly 40 and the positioning member 50 is inserted into the clamp 820 for positioning, the pressing member 60 can be screwed to press the clamp 820, thereby limiting the movement of the clamp 820 relative to the polishing module 810 when the clamp 820 and the polishing module 810 are connected, thereby facilitating improving the accuracy of replacing the polishing module 810.

[0039] See also Figure 1 、 Figure 2 and Figure 3 In this embodiment, the correction mechanism 100 further includes a pressing assembly 70. The pressing assembly 70 is disposed on the base 10 and located within the correction space 11. The pressing assembly 70 is located on one side of the limiting assembly 30. The pressing assembly 70 is used to press the polishing module 810 against the limiting assembly 30. In this way, by providing the pressing assembly 70 to press the polishing module 810 against the limiting assembly 30, the movement of the polishing module 810 relative to the clamp 820 can be restricted when the clamp 820 and the polishing module 810 are connected, thereby facilitating improved accuracy in replacing the polishing module 810.

[0040] In this embodiment, the pressing assembly 70 includes a mounting member 71 and a pressing member 72. The mounting member 71 is provided on the base 10 and is located on one side of the limiting assembly 30. The pressing member 72 is provided through the mounting member 71 and extends toward the limiting assembly 30. The pressing member 72 is used to move toward the limiting assembly 30 under the action of an external force to press the grinding module 810 against the limiting assembly 30. Specifically, the mounting member 71 is block-shaped. The mounting member 71 and the second limiting member 32 are spaced apart along the first direction. The mounting member 71 is provided with an insertion hole 711. The insertion hole 711 can be a threaded hole. The pressing member 72 can be a bolt. The pressing member 72 is threadedly connected to the insertion hole 711 and extends toward the second limiting member 32. When the first limiting member 31 and the second limiting member 32 abut against the limiting grinding module 810, the pressing member 72 can be screwed to press the grinding module 810 against the second limiting member 32. By providing the pressing assembly 70 with the mounting member 71 and the pressing member 72 , the structure is simple and helps to improve the accuracy of the pressing assembly 70 in pressing the polishing module 810 .

[0041] In some other embodiments, the pressing member 72 may also be driven by a power member such as a cylinder (not shown) to move to press the polishing module 810 , which is not specifically limited in the embodiment of the present application.

[0042] In some other embodiments, the mounting member 71 may also be spaced apart from the first limiting member 31 along the second direction. Correspondingly, the pressing member 72 presses the polishing module 810 onto the first limiting member 31 under the action of external force. The embodiments of the present application do not make specific limitations on this.

[0043] In summary, the correction mechanism 100 of the embodiment of the present application is able to ensure that the position of the polishing module 810 installed on the fixture 820 remains consistent each time the polishing module 810 is replaced, by providing a limit assembly 30 to abut against the limit polishing module 810, providing a support assembly 40 to support the clamp 820, and providing a positioning member 50 to insert and position the clamp 820. Thus, the correction mechanism 100 can ensure that the position of the polishing module 810 installed on the clamp 820 remains consistent each time the polishing module 810 is replaced, thereby improving the accuracy of replacing the polishing module 810. In addition, since the position of the polishing module 810 installed on the clamp 820 remains consistent each time the polishing module 810 is replaced, it is not necessary to adjust the operating procedures of the mobile mechanism (not shown) such as the robotic arm connected to the clamp 820 to ensure that the polishing module 810 can work accurately, thereby reducing the maintenance time of the polishing module 810 and improving the polishing efficiency of the polishing module 810.

[0044] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be embraced herein.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A calibration mechanism for calibrating a grinding mechanism comprising a fixture and a grinding module, characterized in that: The correction mechanism comprises: A base, used for supporting the polishing module; A correction frame is provided on the base, with a correction space being defined between the correction frame and the base; A limiting assembly is provided on the base and is located in the correction space, and is used for abutting and limiting the polishing module; a support assembly, provided on the correction frame and extending into the correction space, wherein the portion of the support assembly extending into the correction space is used to support the fixture; A positioning member is provided on the correction frame, and is used for inserting and positioning the fixture to correct the relative position of the fixture and the polishing module.

2. The correction mechanism according to claim 1, wherein: The limiting assembly includes a first limiting member and a second limiting member, the first limiting member is arranged on the base and extends along a first direction, the second limiting member is arranged on the base and extends along a second direction, and the second limiting member is arranged adjacent to the first limiting member, wherein the first direction and the second direction are perpendicular to each other.

3. The correction mechanism according to claim 2, wherein: The first limiting member and the second limiting member are detachably provided on the base, and the limiting assembly further includes a first positioning pin and a second positioning pin, the first positioning pin is passed through the first limiting member and inserted into the base to position the first limiting member relative to the base, and the second positioning pin is passed through the second limiting member and inserted into the base to position the second limiting member relative to the base.

4. The correction mechanism according to claim 1, wherein: The support assembly includes a support member and an adjusting member. The support member is arranged in the correction space and above the limit assembly. The support member is used to support the clamp. The adjusting member is passed through the correction frame and connected to the support member. The adjusting member is used to drive the support member to move to adjust the distance between the support member and the limit assembly.

5. The correction mechanism according to claim 4, characterized in that: The support member includes a supporting portion and an abutting portion, the supporting portion is used to support the clamp, the adjusting member is connected to the supporting portion, and the abutting portion is vertically connected to the supporting portion and extends toward one side of the correction frame toward the limiting assembly.

6. The correction mechanism according to claim 4, wherein: There are multiple groups of support assemblies, which are arranged at intervals. The support members of the multiple groups of support assemblies and the correction frames form a channel for the clamp to pass through, and the positioning member extends into the channel.

7. The correction mechanism according to claim 1, wherein: The correction mechanism further includes a pressing member, which is passed through the correction frame and spaced apart from the positioning member. The pressing member is used to abut against and press the clamp.

8. The correction mechanism according to claim 1, wherein: The correction frame includes a correction seat and multiple connecting parts. The correction seat is spaced apart from the base. Multiple connecting parts are spaced apart between the correction seat and the base, and the two ends of each connecting part are respectively connected to the correction seat and the base. The base, multiple connecting parts and the correction seat enclose the correction space, and the support assembly and the positioning part are both arranged on the correction seat.

9. The correction mechanism according to claim 1, wherein: The correction mechanism also includes a clamping assembly, which is arranged on the base and located in the correction space, and the clamping assembly is located on one side of the limiting assembly. The clamping assembly is used to press the polishing module against the limiting assembly.

10. The correction mechanism according to claim 9, characterized in that: The clamping assembly includes a mounting member and a clamping member. The mounting member is arranged on the base and located on one side of the limiting assembly. The clamping member passes through the mounting member and extends toward the limiting assembly. The clamping member is used to move toward the limiting assembly under the action of external force to press the grinding module against the limiting assembly.

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