Straightening fixture for front frame

Abstract

The utility model relates to the field of shape correcting tool, concretely relates to a shape correcting tool for front frame. The shape correcting tool includes: base, axle sleeve fixed structure, install on the base, side hole fixed structure, including install on the base first support, with first support opposite arrangement second support, and two ends are installed on first support and second support positioning axle, positioning axle is arranged with multiple, middle hole fixed structure, including install on the base third support, rotatable and lockable install on the center plate of third support, and install on the center plate fixed pin, end portion tight structure, install on the base and with side hole fixed structure opposite arrangement. The utility model relates to the shape correcting tool for front frame can carry out matching to multiple models of front frame, thereby reduces design development cost and manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of alignment tooling, specifically to an alignment tooling for a front frame. Background Technology

[0002] The front frame is made of aluminum alloy casting (plate welding). Due to the irregular shape of the front frame, it will deform after low-pressure casting and heat treatment, which will affect the product qualification rate. Therefore, a straightening process is required.

[0003] Existing calibration fixtures are often designed individually based on the structure of the front frame, requiring a specific calibration fixture for each front frame model. This approach necessitates designing multiple calibration fixtures even for front frames with similar structures, resulting in high design, development, and manufacturing costs.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To improve or solve the technical problem of high design, development, and manufacturing costs associated with designing a corresponding alignment fixture for a specific model of front frame in existing technologies, this utility model provides an alignment fixture for a front frame. The alignment fixture includes: a base; a bushing fixing structure mounted on the base; a side hole fixing structure including a first bracket mounted on the base, a second bracket arranged opposite to the first bracket, and positioning shafts with their ends respectively mounted on the first and second brackets; multiple positioning shafts are arranged; a center hole fixing structure including a third bracket mounted on the base, a rotatable and lockable center plate mounted on the third bracket, and a fixing pin mounted on the center plate; and an end clamping structure mounted on the base and arranged opposite to the side hole fixing structure.

[0006] This utility model, a tooling for aligning front frames, includes a base, a bushing fixing structure, a side hole fixing structure, a center hole fixing structure, and an end clamping structure. The base is used to mount each of the above structures. The bushing fixing structure is used to position and fix the bushings of the front frame. The side hole fixing structure includes a first bracket, a second bracket, and a positioning shaft. The positioning shaft is mounted on the first and second brackets and can be inserted into the side hole to position and fix the side hole of the front frame; multiple positioning shafts are arranged to match various front frame models. The center hole positioning structure includes a third bracket, a center plate, and a fixing pin. The center plate is rotatably and lockably mounted on the third bracket, and the fixing pin is arranged at one end of the center plate to position and fix the center hole of the front frame. The center plate is rotatably mounted on the third bracket to match various front frame models. The end clamping structure is arranged opposite to the side hole fixing structure and can press the front frame against the side hole fixing structure, thereby fixing the front frame between the end clamping structure and the side hole fixing structure. With the above-described configuration, the alignment fixture for the front frame of this invention can be matched with various models of front frames, thereby reducing design and development costs and manufacturing costs.

[0007] Furthermore, mounting seats are detachably provided on both the first and second brackets, and both ends of the positioning shaft are mounted on the mounting seats. With the above configuration, different models of front frames can be matched by replacing the mounting seats and the positioning shafts on them.

[0008] Furthermore, the positioning shaft is provided with two shafts.

[0009] Furthermore, the fixing pin is detachably mounted on the center plate, and a pin shaft is provided at one end of the center plate; a pin shaft hole matching the pin shaft is provided on the third bracket, and multiple pin shaft holes are provided along the movement trajectory of the pin shaft.

[0010] Furthermore, a mounting bracket is provided between the third bracket and the base, and the mounting bracket and the third bracket are detachably connected.

[0011] Furthermore, the bushing fixing structure includes a first bearing seat mounted on the base, a second bearing seat arranged opposite to the first bearing seat, and a bushing assembly with its two ends respectively mounted on the first bearing seat and the second bearing seat; a bushing that mates with the bushing assembly is provided on the second bearing seat.

[0012] Furthermore, the end clamping structure includes a clamping support detachably mounted on the base and a clamping bolt that is threadedly connected to the clamping support.

[0013] Furthermore, the end clamping structure is provided in two sets, and the two sets of end clamping structures are arranged on both sides of the first bearing seat.

[0014] Furthermore, it also includes a bottom clamping structure, which includes a fourth bracket mounted on the base and a clamping seat mounted on the fourth bracket and adapted to abut against the front frame.

[0015] Furthermore, the top clamping seat and the fourth bracket form a threaded connection.

[0016] In summary, compared with the prior art, this utility model has the following beneficial effects: (1) The side hole fixing structure includes a first bracket, a second bracket and a positioning shaft. The positioning shaft is installed on the first bracket and the second bracket and can be inserted into the side hole to position and fix the side hole of the front frame. There are multiple positioning shafts, which can match various models of front frames. (2) The center hole positioning structure includes a third bracket, a center plate and a fixing pin. The center plate is rotatably and lockably mounted on the third bracket. The fixing pin is arranged at one end of the center plate and can position and fix the center hole of the front frame. The center plate is rotatably mounted on the third bracket and can be matched with various models of front frames. Attached Figure Description

[0017] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of an embodiment of the alignment fixture for a front frame of this utility model; Figure 2 This is a left view of an embodiment of the alignment fixture for a front frame according to this utility model; Figure 3 This is a top view of an embodiment of the alignment fixture for a front frame according to this utility model; Figure 4 This is a schematic diagram of an embodiment of the present invention for the alignment tooling of the front frame and the assembly of the front frame; Figure 5 This is a left view of an embodiment of the present invention for the alignment fixture of the front frame and the assembly of the front frame; Figure 6 This is a top view of an embodiment of the present invention for the alignment tooling of the front frame and the assembly of the front frame; Figure 7 This is a schematic diagram of an embodiment of the present invention for aligning a front frame and assembling it with another front frame; Figure 8 This is a left view of an embodiment of the present invention for assembling a front frame alignment fixture with another front frame; Figure 9This is a top view illustrating an embodiment of the present invention for assembling a front frame alignment fixture with another front frame.

[0018] List of reference numerals in the attached drawings: 1. Base; 11. Profile; 12. Base plate; 13. Extension; 2. Bushing fixing structure; 21. First bearing seat; 22. Second bearing seat; 23. Shaft assembly; 24. Mounting plate; 25. Bushing; 3. Side hole fixing structure; 31. First bracket; 32. Second bracket; 33. Positioning shaft; 34. Mounting seat; 4. Center hole fixing structure; 41. Third bracket; 42. Center plate; 43. Fixing pin; 44. Mounting support; 45. Pin hole; 46. Pin; 5. Side plate fixing structure; 51. Column; 52. Fixing plate; 6. End tightening structure; 61. Tightening support; 62. Tightening bolt; 63. Nut; 7. Bottom tightening structure; 71. Fourth bracket; 72. Tightening seat. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] To improve or solve the technical problem that existing technologies require the design of a corresponding alignment fixture for a specific model of front frame, resulting in high design, development, and manufacturing costs, this utility model provides an alignment fixture for a front frame. The alignment fixture includes: a base 1; a bushing fixing structure 2, mounted on the base 1; a side hole fixing structure 3, including a first bracket 31 mounted on the base 1, a second bracket 32 ​​arranged opposite to the first bracket 31, and positioning shafts 33 with their ends respectively mounted on the first bracket 31 and the second bracket 32; multiple positioning shafts 33 are arranged; a center hole fixing structure 4, including a third bracket 41 mounted on the base 1, a rotatable and lockable center plate 42 mounted on the third bracket 41, and a fixing pin 43 mounted on the center plate 42; and an end clamping structure 6, mounted on the base 1 and arranged opposite to the side hole fixing structure 3.

[0023] Figure 1 This is a schematic diagram of an embodiment of the present invention used for a front frame alignment fixture. Figure 2 This is a left view of an embodiment of the present invention for a front frame alignment fixture. Figure 3 This is a top view of an embodiment of the alignment fixture for a front frame according to this utility model. Figure 1 , Figure 2 and Figure 3 As shown, in one or more embodiments, the alignment fixture for the front frame of this utility model includes a base 1, a bushing fixing structure 2, a side hole fixing structure 3, a center hole fixing structure 4, a side plate fixing structure 5, an end clamping structure 6, and a bottom clamping structure 7.

[0024] See also Figure 1 , Figure 2 and Figure 3 In one or more embodiments, the base 1 includes crisscrossing profiles 11 and a base plate 12 mounted on top of the profiles 11. Specifically, based on Figure 1 As shown, a pad is provided below part of the profile 11. Furthermore, the base plate 12 is a roughly rectangular plate, and extensions 13 for arranging side plate fixing structures 5 extend from both the front and rear sides of the base plate 12. A reinforcing plate is provided between the extensions 13 and the profile 11.

[0025] See also Figure 1 , Figure 2 and Figure 3The bushing fixing structure 2 is mounted on the base plate 12, near the left side of the base plate 12, and located in the middle of the base plate 12 in the front-rear direction. In one or more embodiments, the bushing fixing structure 2 includes a first bearing seat 21 mounted on the base 1, a second bearing seat 22 arranged opposite to the first bearing seat 21, and a bushing assembly 23 with its two ends respectively mounted on the first bearing seat 21 and the second bearing seat 22. Specifically, the first bearing seat 21 and the second bearing seat 22 are detachably fixed to the base plate 12 by bolts. A mounting plate 24 is provided on the first bearing seat 21, and the mounting plate 24 includes a first half and a second half connected to the first half. One side of the second half is hinged to the first half, and the other side is fixedly connected to the first half by bolts. Through holes that mate with the bushing assembly 23 are formed on the first half and the second half, which can fix one end of the bushing assembly 23 to the first bearing seat 21. Furthermore, a bushing 25 is provided at the end of the shaft assembly 23 away from the first shaft seat 21. The bushing 25 is fitted onto the shaft assembly 23 and is close to the second shaft seat 22. A mounting plate is provided on the second shaft seat 22, and the mounting plate on the second shaft seat 22 has the same structure as the mounting plate 24 on the first shaft seat 21.

[0026] See also Figure 1 , Figure 2 and Figure 3 The edge hole fixing structure 3 is mounted on the base plate 12, near the right side of the base plate 12. In one or more embodiments, the edge hole fixing structure 3 includes a first bracket 31 mounted on the base 1, a second bracket 32 ​​arranged opposite to the first bracket 31, and a positioning shaft 33 with its two ends respectively mounted on the first bracket 31 and the second bracket 32. Specifically, based on Figure 3 As shown, the first bracket 31 and the second bracket 32 ​​are located near the upper and lower sides of the base plate 12, respectively, and are detachably connected to the base plate 12 by bolts. Furthermore, mounting seats 34 are detachably arranged on both the first bracket 31 and the second bracket 32. The mounting seats 34 are detachably connected to the first bracket 31 and the second bracket 32 ​​by bolts, allowing for replacement of the mounting seats 34 and adjustment of the height of the mounting seats 34 and the positioning shaft 33 on the mounting seats 34. The two ends of the positioning shaft 33 are respectively mounted on the mounting seats 34 of the first bracket 31 and the second bracket 32. For example, the structure of the mounting seat 34 is similar to that of the mounting plate 24, and it is detachably configured in two parts, thereby detachably fixing the positioning shaft 33 to the mounting seat 34 for replacement. Specifically, multiple positioning shafts 33 are provided. For example, two positioning shafts 33 are provided, one as a spare and one for normal use, to match two models of front frames, avoiding the need to replace the positioning shaft 33 every time the front frame is replaced. Alternatively, the positioning axis 33 can be set to one, three, or other suitable quantities.

[0027] See also Figure 1 , Figure 2 and Figure 3 The central hole fixing structure 4 is installed on the base 1, near the right side of the base plate 12, and located in the middle of the base plate 12 in the front-rear direction. In one or more embodiments, the central hole fixing structure 4 includes a third bracket 41 installed on the base 1, a center plate 42 rotatably and lockably installed on the third bracket 41, and a fixing pin 43 installed on the center plate 42. A mounting bracket 44 is provided between the third bracket 41 and the base 1. The mounting bracket 44 is detachably installed on the base 1 by bolts, and the third bracket 41 is detachably installed on the mounting bracket 44 by bolts. Specifically, the center plate 42 is generally elongated, and has multiple through holes along its length. The through holes are spaced apart and evenly arranged. The fixing pin 43 is installed in the through holes to fix the front bracket to the center plate 42. By adjusting the position of the fixing pin 43 in different through holes, different models of front brackets can be accommodated. Furthermore, the third bracket 41 is provided with hinge holes and pin holes 45. Multiple pin holes 45 are arranged in an arc shape around the hinge hole. Specifically, there are three pin holes 45. A pin 46 that mates with the pin holes 45 is provided at one end of the center plate 42, and one end of the center plate 42 is fixed to the third bracket 41 by the pin 46. By adjusting the position of the pin 46, the angle of the center plate 42 can be adjusted to accommodate different models of front brackets.

[0028] See also Figure 1 , Figure 2 and Figure 3 The side plate fixing structure 5 is installed on the extension 13. In one or more embodiments, two sets of side plate fixing structures 5 are provided, and the two sets of side plate fixing structures 5 are respectively arranged on two extensions 13. Each set of side plate fixing structures 5 includes a detachable column 51 installed on the extension 13 and a fixing plate 52 installed on the column 51. The fixing plate 52 can be connected to the front frame through a connecting plate. One side of the connecting plate is fixedly connected to the fixing plate 52 by bolts, and the other side is fixedly connected to the front frame by bolts. Alternatively, the fixing plate 52 can be directly fixedly connected to the front frame by bolts. Furthermore, a reinforcing plate is provided between the column 51 and the base plate 12, and between the fixing plate 52 and the base plate 12.

[0029] See also Figure 1 , Figure 2 and Figure 3The end clamping structure 6 is mounted on the base 1 and is located near the left side of the base plate 12. In one or more embodiments, two sets of end clamping structures 6 are provided, and the two sets of end clamping structures 6 are arranged on both sides of the first bearing seat 21. Each set of end clamping structures 6 includes a clamping support 61 detachably mounted on the base 1 and a clamping bolt 62 that is threadedly connected to the clamping support 61. Specifically, the clamping support 61 is detachably mounted on the base 1 by bolts, and a nut 63 that matches the clamping bolt 62 is provided on the top of the clamping support 61, with the clamping bolt 62 arranged inside the nut 63. By rotating the clamping bolt 62, the length of the clamping bolt 62 extending out of the nut 63 is adjusted, thereby clamping the front bracket.

[0030] See also Figure 1 , Figure 2 and Figure 3 A bottom clamping structure 7 is mounted on the base 1 and located between the first support and the second support. In one or more embodiments, the bottom clamping structure 7 includes a fourth bracket 71 mounted on the base 1 and a clamping seat 72 mounted on the fourth bracket 71. The fourth bracket 71 is detachably mounted on the base plate 12 by bolts. The clamping seat 72 is generally bolt-shaped and forms a threaded connection with the fourth bracket 71. The height of the clamping seat 72 can be adjusted by rotating it to abut against the front frame. Furthermore, the clamping seat 72 is arranged at an angle. Exemplarily, a nut is fitted on the circumferential outer side of the clamping seat 72 to prevent the clamping seat 72 from retracting into the fourth bracket 71 when pressed. Alternatively, a through hole can be formed in the fourth bracket 71, and a limiting ring can be formed in the clamping seat 72, so that the clamping seat 72 is inserted into the fourth bracket 71.

[0031] Figure 4 This is a schematic diagram of an embodiment of the present invention for the alignment tooling of the front frame and the assembly of the front frame. Figure 5 This is a left view of an embodiment of the present invention for aligning a front frame and assembling a front frame. Figure 6 This is a top view of an embodiment of the present invention, which uses a front frame alignment fixture for front frame assembly. Figure 4 , Figure 5 and Figure 6 As shown, a front frame of a certain type is fixed on a calibration fixture. This front frame has two bushings, one fitted onto the shaft assembly 23 and the other onto the bushing 25. The front frame has side holes and a center hole; the side holes are fitted onto a positioning shaft 33, and the center hole is mounted on a center plate 42 via a fixing pin 43. The front frame also has side plates, each mounted on a side plate fixing structure 5 via a connecting plate. The tightening bolt 62 of the end tightening structure 6 abuts against the front end of the front frame. The tightening seat 72 of the bottom tightening structure 7 abuts against the bottom of the front frame.

[0032] Figure 7 This is a schematic diagram of an embodiment of the present invention for aligning a front frame with another front frame. Figure 8 This is a left view of an embodiment of the present invention, which uses a front frame alignment fixture for assembling with another front frame. Figure 9 This is a top view illustrating an embodiment of the present invention's front frame alignment fixture assembled with another front frame. Figure 7 , Figure 8 and Figure 9 As shown, another type of front frame is fixed on a calibration fixture. This front frame has two bushings, one fitted onto the shaft assembly 23 and the other onto the bushing 25. The front frame has side holes that fit onto another positioning shaft 33. The front frame also has side plates, which are respectively mounted on two side plate fixing structures 5 via connecting plates. The tightening bolts 62 of the end tightening structure 6 abut against the front end of the front frame. The tightening seat 72 of the bottom tightening structure 7 abuts against the bottom of the front frame.

[0033] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A calibration fixture for a front frame, characterized in that, include: Base (1); A bushing fixing structure (2) is installed on the base (1); The side hole fixing structure (3) includes a first bracket (31) mounted on the base (1), a second bracket (32) arranged opposite to the first bracket (31), and a positioning shaft (33) with its two ends respectively mounted on the first bracket (31) and the second bracket (32); multiple positioning shafts (33) are arranged. The central hole fixing structure (4) includes a third bracket (41) mounted on the base (1), a center plate (42) mounted on the third bracket (41) that is rotatable and lockable, and a fixing pin (43) mounted on the center plate (42); The end clamping structure (6) is installed on the base (1) and arranged opposite to the side hole fixing structure (3).

2. The alignment fixture for a front frame according to claim 1, characterized in that, Mounting bases (34) are detachably provided on both the first bracket (31) and the second bracket (32), and both ends of the positioning shaft (33) are mounted on the mounting bases (34).

3. The alignment fixture for a front frame according to claim 1, characterized in that, The positioning shaft (33) is provided in two parts.

4. The alignment fixture for a front frame according to claim 1, characterized in that, The fixing pin (43) is detachably mounted on the center plate (42), and a pin shaft (46) is provided at one end of the center plate (42); a pin shaft hole (45) matching the pin shaft (46) is provided on the third bracket (41), and multiple pin shaft holes (45) are provided along the movement trajectory of the pin shaft (46).

5. The alignment fixture for a front frame according to claim 1, characterized in that, An mounting bracket (44) is provided between the third bracket (41) and the base (1), and the mounting bracket (44) and the third bracket (41) are detachably connected.

6. The alignment fixture for a front frame according to claim 1, characterized in that, The bushing fixing structure (2) includes a first bearing seat (21) mounted on the base (1), a second bearing seat (22) arranged opposite to the first bearing seat (21), and a bushing assembly (23) mounted on the first bearing seat (21) and the second bearing seat (22) respectively at both ends; a bushing (25) matching the bushing assembly (23) is provided on the second bearing seat (22).

7. The alignment fixture for a front frame according to claim 6, characterized in that, The end clamping structure (6) includes a clamping support (61) detachably mounted on the base (1) and a clamping bolt (62) that is threadedly connected to the clamping support (61).

8. The alignment fixture for a front frame according to claim 7, characterized in that, The end clamping structure (6) is provided in two sets, and the two sets of end clamping structures (6) are arranged on both sides of the first bearing seat (21).

9. The alignment fixture for a front frame according to claim 1, characterized in that, It also includes a bottom clamping structure (7), which includes a fourth bracket (71) mounted on the base (1) and a clamping seat (72) mounted on the fourth bracket (71) and adapted to abut against the front frame.

10. The alignment fixture for a front frame according to claim 9, characterized in that, The top clamp (72) and the fourth bracket (71) are connected by a threaded engagement.

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