Processing method for bracket-like parts, first positioning fixture and second positioning fixture

Abstract

The present invention discloses a processing method for bracket-like parts, a first positioning fixture, and a second positioning fixture. Among them, the processing method for bracket-like parts uses the first positioning fixture to fix the bracket-like parts, and the first positioning fixture is also used for the first machining of the bracket-like parts. The processing method includes sleeving the first connection hole provided at the first end of the bracket body onto the first positioning and leveling component; adjusting all the first tightening and fixing components until they tighten the two opposite sides and the lugs of the bracket body; adjusting the first end pressing component until the first end pressing component tightens the second end of the bracket body; adjusting the first positioning and leveling component until the back plane provided on the back of the bracket-like parts remains horizontal; inserting the first top-side pressing component into the fixing hole of the bracket body, and adjusting the first top-side pressing component until it presses the back of the bracket body, reliably fixing the bracket-like parts, and effectively improving the machining accuracy of the bracket-like parts.

Description

Technical Field

[0001] The present invention relates to the technical field of machining of bracket parts, and particularly relates to a machining method for bracket parts. Background Art

[0002] The bracket parts of an automobile include an upper cross arm, a lower cross arm, etc. Among them, the lower cross beam is used to connect the tire carrier, the shock absorption mechanism and the suspension beam to be responsible for controlling the movement direction and position of the wheel, and ensuring the stability and smoothness of the vehicle driving.

[0003] The blanks of the lower cross arm are mostly castings or forgings, and multiple machining operations need to be performed on the blanks to obtain a lower cross arm with a unique structure and high machining accuracy requirements. However, there are still many machining process defects in the existing machining of the lower cross arm, such as inaccurate fixture positioning or insecure fixture clamping, resulting in low machining accuracy of the lower cross arm. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a machining method for bracket parts, which can reliably fix the bracket parts, restrict the movement of the bracket parts in all directions, and effectively improve the machining accuracy of the bracket parts. Another purpose of the present invention is to provide a first positioning fixture. Another purpose of the present invention is to provide a second positioning fixture.

[0005] To achieve the above purpose, the present invention provides a machining method for bracket parts. The bracket parts have a bracket body. The machining method uses a first positioning fixture to fix the bracket parts, and the first positioning fixture is also used for the first machining of the bracket parts. The first positioning fixture includes at least one set of first tightening and fixing components, a first end pressing component, a first positioning and leveling component, and a first top and side pressing component. The machining method includes:

[0006] Adjust all the first tightening and fixing components until they tighten the two opposite sides and the lugs of the bracket body;

[0007] Adjust the first end pressing component until the first end pressing component tightens the second end of the bracket body;

[0008] Adjust the first positioning and leveling component until the back plane provided on the back of the bracket parts remains horizontal;

[0009] Insert the first top and side pressing component into the fixing hole of the bracket body, and adjust the first top and side pressing component until it presses the back of the bracket body.

[0010] Preferably, the processing method also uses a second positioning fixture to fix the bracket-like parts, and the second positioning fixture is also used for the second machining of the bracket-like parts. The second positioning fixture includes at least one set of second tightening and fixing components, a second front-end pressing component, a second rear-end supporting component, a second rear-end pressing component, and a second pressing and fixing component. The processing method further includes:

[0011] Put the first connection hole on the second positioning column of the second front-end pressing component;

[0012] Adjust all the second tightening and fixing components until they tighten the two opposite sides of the bracket body;

[0013] Adjust the second front-end pressing component until it presses the first connection sleeve with the first connection hole;

[0014] Adjust the second rear-end supporting component to tighten the bottom of the second end of the bracket body;

[0015] Adjust the second rear-end pressing component until the second rear-end pressing component presses and fixes the second connection sleeve and the third connection sleeve provided at the second end of the bracket body on the second rear-end supporting component;

[0016] Insert the second pressing and fixing component into the fixing hole, and adjust the second pressing and fixing component until it presses the front of the bracket body.

[0017] Preferably, the processing method also uses a third positioning fixture to fix the bracket-like parts, and the third positioning fixture is also used for the third machining of the bracket-like parts. The third positioning fixture includes a third inclined positioning seat, a third front-end pressing component fixed on the third inclined positioning seat, a third left-side positioning component, a third right-side positioning component, and a third pressing and fixing component. The processing method further includes:

[0018] Place the bracket body on the third inclined positioning seat, and put the first connection hole on the third positioning column of the third front-end pressing component;

[0019] Insert the third left-side positioning pin of the third left-side positioning component into the third connection sleeve, and at the same time insert the third right-side positioning pin of the third right-side positioning component into the second connection sleeve;

[0020] Adjust the third left-side tightening bolt provided by the third left-side positioning component and the third right-side tightening bolt provided by the third right-side positioning component until they respectively press against the end faces of the third connection sleeve and the second connection sleeve;

[0021] Adjust the third front-end pressing component to press the first connection sleeve;

[0022] Insert the third pressing and fixing component into the shock-absorbing hole of the bracket body, and adjust the third pressing and fixing component until it presses the front of the bracket body;

[0023] Lock the third left positioning component and the third right positioning component.

[0024] Preferably, the machining method also uses a finished product inspection fixture to inspect the finished part obtained after the third machining. The finished product inspection fixture includes a finished product positioning component, a first through gauge, a second through gauge, a third through gauge, a fourth through gauge, and a fifth through gauge. The machining method further includes:

[0025] Use the finished product positioning component to press against the pressure plate of the bracket body.

[0026] Use the first through gauge to inspect the first connecting hole.

[0027] Use the second through gauge to inspect the second connecting hole of the second connecting sleeve.

[0028] Use the third through gauge to inspect the third connecting hole of the third connecting sleeve.

[0029] Use the fourth through gauge to inspect the first through hole of the bracket body.

[0030] Use the fifth through gauge to inspect the lug through hole of the lug.

[0031] Preferably, the machining method also uses a blank inspection fixture to inspect the external dimensions of the blank. The blank inspection fixture includes a blank front-end positioning component, a blank rear-end support seat, a blank side pressing component, and a blank lug inspection component opposite to the blank side pressing component. The machining method further includes:

[0032] Put the first connecting hole on the blank positioning column of the blank front-end positioning component.

[0033] Place the second connecting sleeve and the third connecting sleeve of the bracket body on the blank rear-end support seat respectively.

[0034] Adjust the blank side pressing component until it presses against the side of the bracket body away from the lug.

[0035] Adjust the blank front-end positioning component until the back plane is horizontal, and use the blank front-end positioning component to press against the outer side of the first connecting sleeve.

[0036] Adjust the blank lug inspection component, and obtain the position deviation between the actual arc contour of the lug and the theoretical arc contour of the blank lug inspection component.

[0037] The present invention also provides a first positioning fixture, which is applied to the machining method of the bracket-like part described in any one of the above. It includes a first positioning support plate, at least one set of first pressing and fixing components, a first positioning leveling seat, and a first lug support seat. All the first pressing and fixing components, the first positioning leveling seat, and the first lug support seat are fixedly arranged on the first positioning support plate. All the first pressing and fixing components include:

[0038] The first left-side pressing component and the first right-side pressing component, which are respectively arranged on two opposite sides of the support body and are used to press against two opposite sides of the support body respectively;

[0039] Two groups of first ear pressing components, which are respectively arranged on two opposite sides of the first ear support seat and are used to press against two opposite sides of the ear respectively;

[0040] Two groups of first front-end pressing components, which are respectively arranged on the first positioning and leveling seat and are used to press against the outer side surfaces of the first connecting sleeves respectively;

[0041] The first auxiliary pressing component, which is fixedly arranged on the first positioning and leveling seat and is used to press against the reinforcing rib of the support body.

[0042] Preferably, it further includes a first end pressing component, and the first end pressing component includes:

[0043] The first end pressing plate fixedly arranged on the first positioning and supporting plate;

[0044] The first rotating support seat fixedly arranged on the first positioning and supporting plate;

[0045] The first tension bolt rotatably arranged on the first rotating support seat;

[0046] The first locking nut, which is installed on the first tension bolt and is used to lock the first tension bolt when the first tension bolt is caught in the first limiting notch arranged on the first end pressing plate;

[0047] Wherein, the first end pressing plate has a first end V-shaped pressing block which respectively abuts against the outer side surfaces of the second connecting sleeve and the third connecting sleeve arranged at the end of the support body.

[0048] Preferably, the first top-side pressing component includes:

[0049] The first top-side pressing bolt vertically and fixedly arranged on the first positioning and supporting plate;

[0050] The first top-side pressing block, which is installed on the first top-side pressing bolt and is used to press against the back surface of the support body;

[0051] The first top-side pressing nut installed on the first top-side pressing bolt;

[0052] Wherein, the first top-side pressing block is integrally and vertically provided with a top-side pressing edge, and the top-side pressing edge presses in the first fixing groove of the support body.

[0053] The present invention further provides a second positioning fixture, which is applied to the processing method of the support part described in any one of the above, and includes a second positioning and supporting plate and two groups of second rear-end supporting components fixedly arranged on the second positioning and supporting plate and respectively abutting against the second connecting sleeve and the third connecting sleeve of the support body. Each group of second rear-end supporting components includes:

[0054] The second rear-end support seat fixedly installed on the second positioning support plate;

[0055] The second support adjustment bolt detachably provided with the second rear-end support seat and used for supporting the second connecting sleeve or the third connecting sleeve;

[0056] The second support locking bolt detachably installed on the second rear-end support seat and used for pressing tightly the second support adjustment bolt.

[0057] Preferably, it includes a second rear-end pressing component, and the second rear-end pressing component includes:

[0058] The second rear-end fixed pressing plate with a second pressing positioning groove;

[0059] At least one second rear-end pressing bolt vertically fixedly installed on the second positioning support plate and passing through the second rear-end fixed pressing plate;

[0060] The second rear-end pressing nut installed on the second rear-end pressing bolt and abutted against the second rear-end fixed pressing plate;

[0061] Wherein, the outer side surfaces of both the second connecting sleeve and the third connecting sleeve are in conformity with the second pressing positioning groove.

[0062] Compared with the background technology, the processing method of the bracket-like part provided by the present invention uses the components of the first positioning fixture to reliably fix the bracket-like part, restricts the bracket-like part from moving in all directions, ensures that the position and the reference plane of the bracket-like part will not change during the first machining process, and effectively improves the machining accuracy of the bracket-like part.

[0063] The first positioning fixture and the second positioning fixture provided by the present invention can also realize reliable fixation of the bracket-like part and effectively improve the machining accuracy. Description of the Drawings

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

[0065] Figure 1 It is a flowchart of the processing method of the bracket-like part provided by a specific embodiment of the present invention;

[0066] Figure 2 It is an axonometric view of the first positioning fixture provided by a specific embodiment of the present invention;

[0067] Figure 3 It is Figure 2 Another axonometric view of

[0068] Figure 4 is the front view of Figure 3 ;

[0069] Figure 5 is the top view of 3;

[0070] Figure 6 is Figure 5 the sectional view taken along the A-A direction in

[0071] Figure 7 is the axonometric view of the second positioning fixture provided by a specific embodiment of the present invention;

[0072] Figure 8 is Figure 7 the front view of

[0073] Figure 9 is Figure 7 the top view of

[0074] Figure 10 is Figure 9 the stepped sectional view taken along the B-B direction in

[0075] Figure 11 is the axonometric view of the third positioning fixture in the present invention;

[0076] Figure 12 is Figure 11 the front view of

[0077] Figure 13 is Figure 12 the top view of

[0078] Figure 14 is Figure 13 the sectional view taken along the C-C direction in

[0079] Figure 15 is the axonometric view of the finished product inspection fixture in the present invention;

[0080] Figure 16 is Figure 15 the top view of

[0081] Figure 17 is the axonometric view of the blank inspection fixture in the present invention;

[0082] Figure 18 is Figure 17 the front view of

[0083] Figure 19 is Figure 17 the top view of

[0084] Figure 20 is the front view of the bracket-like part in the present invention;

[0085] Figure 21 This is the rear view of the bracket - type part in the present invention.

[0086] The reference numerals are as follows:

[0087] Bracket body 100, first positioning fixture 200, second positioning fixture 300, third positioning fixture 400, finished - product inspection fixture 500, and blank inspection fixture 600;

[0088] First connecting sleeve 101, first connecting hole 102, compressive plate 103, reinforcing rib 104, second connecting sleeve 105, second connecting hole 106, third connecting sleeve 107, third connecting hole 108, fixing hole 109, shock - absorbing hole 110, ear 111, ear through - hole 112, dorsal plane 113, first through - hole 114, and first fixing groove 115;

[0089] First positioning support plate 201, first left - side tightening component 202, first right - side tightening component 203, first ear tightening component 204, first front - end tightening component 205, first auxiliary tightening component 206, first end - part pressing component 207, first positioning leveling component 208, first top - side pressing component 209, and first support column 210;

[0090] First ear support seat 2041;

[0091] First end - part pressing plate 2071, first rotating support seat 2072, first tensioning bolt 2073, first locking nut 2074, and first end - part V - shaped pressing block 2075;

[0092] First positioning leveling seat 2082, first reference positioning plate 2083, first tightening support block 2084, and first leveling bolt 2085;

[0093] First top - side pressing bolt 2091, first top - side pressing block 2092, and first top - side pressing nut 2093;

[0094] Second tightening and fixing component 301, second front - end pressing component 302, second rear - end support component 303, second rear - end pressing component 304, second pressing and fixing component 305, and second positioning support plate 306;

[0095] Second rear - end support seat 3031, second support adjusting bolt 3032, and second support locking bolt 3033;

[0096] Second front - end pressing bolt 3021, second front - end pressing plate 3022, and second front - end pressing nut 3023;

[0097] Second rear - end fixing pressing plate 3041, second rear - end pressing bolt 3042, and second rear - end pressing nut 3043;

[0098] The third inclined positioning seat 401, the third front-end pressing component 402, the third left-side positioning component 403, the third right-side positioning component 404, and the third pressing and fixing component 405;

[0099] The third front-end pressing bolt 4021, the third front-end pressing plate 4022, and the third front-end pressing nut 4023;

[0100] The third left-side positioning seat 4031, the third left-side positioning pin 4032, the third left-side tightening bolt 4033, and the third left-side locking bolt 4034;

[0101] The third right-side positioning seat 4041, the third right-side positioning pin 4042, the third right-side tightening bolt 4043, and the third right-side locking bolt 4044;

[0102] The third pressing and fixing bolt 4051, the third pressing and fixing plate 4052, and the third pressing and fixing nut 4053;

[0103] The finished product positioning component 501, the first through gauge 502, the second through gauge 503, the third through gauge 504, the fourth through gauge 505, and the fifth through gauge 506;

[0104] The blank positioning post 601, the blank front-end positioning component 602, the blank rear-end support seat 603, the blank side pressing component 604, the blank lug detection component 605, the blank front-end positioning seat 606, and the blank positioning block 607. Specific embodiments

[0105] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0106] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0107] First of all, it should be noted that the orientation words such as front, rear, up, down, left, and right in the text are all attached Figure 2 , Figure 7 , Figure 11 , Figure 15 and Figure 17 are based on the current view. In addition, the front of the bracket part shown in the attached Figure 20 , and the back of the bracket part shown in the attached Figure 21 .

[0108] An embodiment of the present invention discloses a processing method for a bracket - like part. The bracket - like part has a bracket body 100. The bracket - like part may specifically be a lower cross - arm, but is not limited thereto.

[0109] Attached Figure 20 and Figure 21 As shown, a first connection sleeve 101 is provided at the first end of the bracket body 100. A first connection hole 102 is provided at the center of the first connection sleeve 101. An anti - pressure plate 103 is integrally fixed to the outer side surface of the first connection sleeve 101. The anti - pressure plate 103 extends obliquely at an angle away from the first connection sleeve 101 from the outer side surface of the first connection sleeve 101. A reinforcing rib 104 is provided between the outer side surface of the first connection sleeve 101 and the anti - pressure plate 103. A second connection sleeve 105 and a third connection sleeve 107 are provided at the second end of the bracket body 100. A second connection hole 106 is provided at the center of the second connection sleeve 105. A third connection hole 108 is provided at the center of the third connection sleeve 107. The bracket body 100 is provided with a through - hole fixing hole 109 and a shock - absorbing hole 110. An ear 111 is integrally provided on the front surface of the bracket body 100. A back - side plane 113 is provided on the back surface of the bracket body 100.

[0110] As Figure 1 shown, the above - mentioned processing method uses a first positioning fixture 200 to fix the bracket - like part, and the first positioning fixture 200 is also used for the first machining of the bracket - like part. The first machining includes milling the back - side end face of the first connection sleeve 101, milling the first connection hole 102, and milling the inclined surface of the anti - pressure plate 103, etc. Among them, the back - side end face of the first connection sleeve 101 needs to be precision - milled to ensure that the back - side end face of the first connection sleeve 101 has a high machining accuracy, so that the back - side end face of the first connection sleeve 101 can be used as a reference surface. The first connection hole 102 may specifically be a threaded hole of M85x1.5. The included angle between the inclined surface of the anti - pressure plate 103 and the central symmetry plane of the first connection sleeve 101 is 31°. Of course, the machining process of the first machining can be adaptively adjusted according to the structure of the bracket body 100, and no specific limitation is made here.

[0111] As Figures 2 to 6As shown in the figure, the first positioning fixture 200 includes at least one set of first tightening and fixing components, a first end pressing component 207, a first positioning and leveling component 208, and a first top and side pressing component 209. Among them, each set of first tightening and fixing components is respectively used to tighten the outer side surface, the reinforcing rib 104, two opposite sides, and the ear 111 of the first connecting sleeve 101 of the bracket body 100, so as to fix the bracket-like part on the first positioning fixture 200. The first end pressing component 207 abuts against the end of the bracket body 100 away from the first connecting sleeve 101. The first positioning and leveling component 208 is used to define the position of the first connecting sleeve 101 and adjust the back plane 113 provided on the back of the bracket-like part to be horizontal. The first top and side pressing component 209 is used to press the back of the bracket-like part. The specific structures of the components of the first positioning fixture 200 can be specifically referred to the following content.

[0112] The above processing method further includes adjusting all the first tightening and fixing components. Each set of first tightening and fixing components respectively tightens two opposite sides and the ear 111 of the bracket body 100 to limit the forward, backward, or downward movement of the bracket body 100; adjusting the first end pressing component 207. The first end pressing component 207 tightens the second end of the bracket body 100, and the bracket body 100 is clamped between the first end pressing component 207 and the first front tightening component 205, so that the first end pressing component 207 restricts the left or right movement of the bracket body 100; adjusting the first positioning and leveling component 208. The first positioning and leveling component 208 abuts against the bottom end surface of the first connecting sleeve 101. The first positioning and leveling component 208 indirectly adjusts the back plane 113 provided on the back of the bracket-like part by adjusting the position of the first connecting sleeve 101 to keep the back plane 113 horizontal and ensure the accuracy and reliability of the subsequent measurement results; inserting the first top and side pressing component 209 into the fixing hole 109 of the bracket body 100 and adjusting the first top and side pressing component 209. The first top and side pressing component 209 presses the back of the bracket body 100 and cooperates with one set of first tightening and fixing components to limit the up or down movement of the bracket body 100.

[0113] In summary, the processing method of the bracket-like part in the present invention can reliably fix the bracket-like part by using the components of the first positioning fixture 200, restrict the movement of the bracket-like part in all directions, ensure that the position and reference plane of the bracket-like part will not change during the first machining process, and effectively improve the machining accuracy of the bracket-like part.

[0114] The above processing method also uses the second positioning fixture 300 to fix the bracket parts, and the second positioning fixture 300 is also used for the second machining of the bracket parts. The second machining includes milling the end face of the first connecting sleeve 101, milling the second connecting hole 106 and the third connecting hole 108, milling the end faces of the second connecting sleeve 105 and the third connecting sleeve 107, and milling the through-hole 112 and its end face of the lug 111 of the bracket, etc. Among them, both the second connecting hole 106 and the third connecting hole 108 are cylindrical holes with a diameter of φ80, and the through-hole 112 of the lug is a cylindrical hole with a diameter of φ20.5. Of course, the machining process of the second machining can be adjusted adaptively according to the structure of the bracket body 100, and no specific limitation is made here.

[0115] As Figures 7 to 10 shown, the second positioning fixture 300 includes at least one set of second tightening and fixing components 301, a second front-end pressing component 302, a second rear-end supporting component 303, a second rear-end pressing component 304 and a second pressing and fixing component 305. Among them, each set of second tightening and fixing components 301 is respectively used to tighten the two opposite sides of the bracket body 100. The second front-end pressing component 302 and the second rear-end pressing component 304 are respectively arranged at both ends of the bracket parts. Specifically, the second front-end pressing component 302 is used to fix one end of the bracket body 100 provided with the first connecting sleeve 101, and the second rear-end pressing component 304 is used to fix one end of the bracket body 100 provided with the second connecting sleeve 105 and the third connecting sleeve 107. The second rear-end supporting component 303 is arranged at one end of the bracket body 100 provided with the second connecting sleeve 105 and the third connecting sleeve 107, below the bracket body 100, and is used to tighten the bottom of the rear end of the bracket body 100 to ensure that the bracket parts are fixed on the second positioning fixture 300 in an ideal state. The second pressing and fixing component 305 passes through the bracket body 100 and is used to press the middle part of the bracket body 100 to achieve auxiliary fixing of the bracket body 100 and ensure reliable fixing of the bracket body 100. It should be supplemented here that the second front-end pressing component 302 does not always press on the first connecting sleeve 101. The second front-end pressing component 302 first presses the first connecting sleeve 101, adjusts the second pressing and fixing component 305 to press the middle part of the bracket body 100, and then removes the second front-end pressing component 302 to ensure that the first connecting sleeve 101 is exposed for convenient machining of the end face of the first connecting sleeve 101. At this time, the main function of the second front-end pressing component 302 is to provide a reference datum for adjusting the second rear-end supporting component 303.

[0116] The above processing method further includes sleeving the first connection hole 102 on the second positioning post of the second front-end pressing component 302 to limit the radial movement of the bracket body 100 along the second positioning post; adjusting all the second pressing and fixing components 301, and each group of the second pressing and fixing components 301 presses against two opposite sides of the bracket body 100 to limit the leftward or rightward movement of the bracket body 100; adjusting the second front-end pressing component 302, and the second front-end pressing component 302 abuts against the end face of the first connection sleeve 101 to limit the axial movement of the bracket body 100 along the second positioning post; adjusting the second rear-end supporting component 303, and the second rear-end supporting component 303 presses against the second end (i.e., the rear end of the bracket body 100) of the bracket body 100 in the vertical direction; adjusting the second rear-end pressing component 304, and the second rear-end pressing component 304 presses against and abuts the second connection sleeve 105 and the third connection sleeve 107 provided at the second end of the bracket body 100. The second connection sleeve 105 and the third connection sleeve 107 are pressed by the second rear-end pressing component 304 and pressed against the second rear-end supporting component 303, so that the second connection sleeve 105 and the third connection sleeve 107 are pressed and fixed between the second rear-end pressing component 304 and the second rear-end supporting component 303 to limit the upward or downward movement of the second end of the bracket body 100; inserting the second pressing and fixing component 305 into the fixing hole 109 of the bracket body 100, and adjusting the second pressing and fixing component 305. The second pressing and fixing component 305 presses against the front face of the bracket body 100 to assist in fixing the bracket body 100.

[0117] The above processing method can reliably fix the bracket-like parts by using the components of the second positioning fixture 300, limit the movement of the bracket-like parts in all directions, ensure that the position and reference plane of the bracket-like parts will not change during the second machining process, and further effectively improve the machining accuracy of the bracket-like parts.

[0118] The above processing method also uses the third positioning fixture 400 to fix the bracket-like parts, and the third positioning fixture 400 is also used for the third machining of the bracket-like parts. The third machining includes continuously milling the end faces of the second connection sleeve 105 and the third connection sleeve 107 and milling the end face of the ear through-hole 112, etc. Of course, the machining process of the third machining can be adaptively adjusted according to the structure of the bracket body 100, and no specific limitation is made here.

[0119] Such as Figures 11 to 14As shown in the figure, the third positioning fixture 400 includes a third inclined positioning seat 401, a third front-end pressing component 402 fixedly arranged on the third inclined positioning seat 401, a third left-side positioning component 403, a third right-side positioning component 404, and a third pressing and fixing component 405. Among them, the third inclined positioning seat 401 mainly plays a supporting role and is used to support the other components in an inclined manner. The third front-end pressing component 402 is used to fix one end of the bracket body 100 provided with the first connecting sleeve 101. The third left-side positioning component 403 and the third right-side positioning component 404 are respectively arranged on two opposite sides of the bracket body 100. The third left-side positioning component 403 is used to fix the third connecting sleeve 107, and the third right-side positioning component 404 is used to fix the second connecting sleeve 105. The third pressing and fixing component 405 passes through the bracket body 100 and is used to press the middle part of the bracket body 100 to ensure that the bracket body 100 is fixed reliably.

[0120] Specifically, the third front-end pressing component 402 includes a third front-end pressing bolt 4021, a third front-end pressing plate 4022, and a third front-end pressing nut 4023. The third front-end pressing bolt 4021 passes through the first connecting hole 102 and is vertically fixed on the third inclined positioning seat 401. The third front-end pressing bolt 4021 passes through the third front-end pressing plate 4022, and the third front-end pressing nut 4023 is installed on the third front-end pressing bolt 4021 and is used to press the third front-end pressing plate 4022. The structures of the third left-side positioning component 403 and the third right-side positioning component 404 are the same. The third left-side positioning component 403 includes a third left-side positioning seat 4031 vertically fixed on the third inclined positioning seat 401 and a third left-side positioning pin 4032 vertically fixed on the third left-side positioning seat 4031. The third left-side positioning pin 4032 passes through the third connecting hole 108. The third left-side positioning component 403 further includes a third left-side locking bolt 4034 arranged on the third left-side positioning seat 4031, and the third right-side positioning component 404 further includes a third right-side locking bolt 4044 arranged on the third right-side positioning seat 4041 to lock the third left-side positioning component 403 and the third right-side locking bolt 4044. The third pressing and fixing component 405 includes a third pressing and fixing bolt 4051, a third pressing and fixing plate 4052, and a third pressing and fixing nut 4053. The third pressing and fixing bolt 4051 is vertically fixed on the third inclined positioning seat 401. The third pressing and fixing bolt 4051 passes through the third pressing and fixing plate 4052, and the third pressing and fixing nut 4053 is installed on the third pressing and fixing bolt 4051 and is used to press the third pressing and fixing plate 4052.

[0121] The above processing method further includes placing the bracket body 100 on the third inclined positioning seat 401, and sleeving the first connection hole 102 on the third positioning post of the third front-end pressing component 402. The third positioning post is used to limit the radial movement of the bracket body 100 along the third positioning post; inserting the third left-side positioning pin 4032 of the third left-side positioning component 403 into the third connection sleeve 107, and simultaneously inserting the third right-side positioning pin 4042 of the third right-side positioning component 404 into the second connection sleeve 105, so that the third left-side positioning component 403 and the third right-side positioning component 404 cooperate together to support the rear end of the bracket body 100, for restricting the rear end of the bracket body 100; adjusting the third left-side tightening bolt 4033 provided on the third left-side positioning component 403 and the third right-side tightening bolt 4043 provided on the third right-side positioning component 404. The third left-side tightening bolt 4033 is used to tighten the end face of the third connection sleeve 107 away from the second connection sleeve 105, and the third right-side tightening bolt 4043 is used to tighten the end face of the second connection sleeve 105 away from the third connection sleeve 107, for jointly restricting the left or right movement of the rear end of the bracket body 100; adjusting the third front-end pressing component 402 to press the first connection sleeve 101, so that the first connection sleeve 101 is fixed between the third positioning post and the third front-end pressing component 402; inserting the third pressing and fixing component 405 into the shock-absorbing hole 110 of the bracket body 100, and adjusting the third pressing and fixing component 405. The third pressing and fixing component 405 presses the front face of the bracket body 100 to achieve auxiliary fixing of the bracket body 100; locking the third left-side positioning component 403 and the third right-side positioning component 404 to restrict the axial movement of the third connection sleeve 107 and the second connection sleeve 105 along their own axes.

[0122] The above processing method can reliably fix bracket-like parts by using the components of the third positioning fixture 400, restrict the movement of bracket-like parts in all directions, ensure that the position and reference plane of bracket-like parts will not change during the third machining process, and further effectively improve the machining accuracy of bracket-like parts.

[0123] The above processing method also uses the finished product inspection fixture 500 to inspect the finished parts obtained after the third machining to check whether the finished parts are qualified. As Figures 15 and 16 shown, the finished product inspection fixture 500 includes a finished product positioning component 501, a first go-no-go gauge 502, a second go-no-go gauge 503, a third go-no-go gauge 504, a fourth go-no-go gauge 505 and a fifth go-no-go gauge 506. Each group of go-no-go gauges includes a go end and a no-go end. If the go end passes and the no-go end does not pass, it means that the inspection object is qualified.

[0124] Specifically, the finished product positioning component 501 is used to abut against the inclined surface of the pressure-resistant plate 103 to limit the position of the bracket body 100. The first go-no-go gauge 502, the second go-no-go gauge 503, the third go-no-go gauge 504, the fourth go-no-go gauge 505, and the fifth go-no-go gauge 506 have the same structure, and each includes a support seat and a go-no-go gauge vertically penetrating the support seat.

[0125] The above processing method further includes using the finished product positioning component 501 to tightly press the pressure-resistant plate 103 of the bracket body 100 to prevent the position of the bracket body 100 from changing during the detection process and affecting the accuracy of the detection result; using the first go-no-go gauge 502 to detect the first connection hole 102; using the second go-no-go gauge 503 to detect the second connection hole 106 of the second connection sleeve 105; using the third go-no-go gauge 504 to detect the third connection hole 108 of the third connection sleeve 107; using the fourth go-no-go gauge 505 to detect the first through hole 114 of the bracket body 100; using the fifth go-no-go gauge 506 to detect the ear through hole 112 of the ear 111.

[0126] The above processing method uses the finished product detection fixture 500 to detect the processing quality of each through hole of the bracket body 100, and the detection is relatively convenient, which is conducive to improving the detection efficiency.

[0127] The above processing method also uses the blank detection fixture 600 to detect the external dimensions of the blank to determine whether the blank is qualified. The blank detection fixture 600 includes a blank front-end positioning component 602, a blank rear-end support seat 603, a blank side pressing component 604, and a blank ear detection component 605 opposite to the blank side pressing component 604; wherein, the blank front-end positioning component 602 and the blank rear-end support seat 603 are respectively located at the front and rear ends of the bracket body 100, and the blank front-end positioning component 602 is used to fix one end of the bracket body 100 provided with the first connection sleeve 101, and the blank rear-end support seat 603 is used to support and fix one end of the bracket body 100 provided with the second connection sleeve 105 and the third connection sleeve 107. The blank side pressing component 604 and the blank ear detection component 605 are respectively located on two opposite sides of the bracket body 100, the blank side pressing component 604 is used to press the side of the bracket body 100 away from the ear 111, and the blank ear detection component 605 is used to press the ear 111.

[0128] Specifically, as Figures 17 to 19As shown in the figure, the blank detection fixture 600 includes a blank front-end positioning seat 606, and a blank positioning column 601 is integrally fixed on the top of the blank front-end positioning seat 606. A blank positioning block 607 is integrally fixed on the top side edge of the blank front-end positioning seat 606. The blank front-end positioning component 602 includes a blank front-end tightening bolt provided on the blank positioning block 607 and a blank front-end tightening nut for the blank front-end tightening bolt. There are two groups of blank rear-end support seats 603, and each group of blank rear-end support seats 603 is provided with a V-shaped groove for supporting the second connecting sleeve 105 and the third connecting sleeve 107. The blank side tightening component 604 and the blank ear detection component 605 have the same structure, and both include a support block, a tightening bolt provided on the support block, and a tightening nut installed on the tightening bolt.

[0129] In the above processing method, the first connecting hole 102 is sleeved on the blank positioning column 601 of the blank front-end positioning component 602, and the blank positioning column 601 is used to limit the radial movement of the first connecting sleeve 101 along the blank positioning column 601; the second connecting sleeve 105 and the third connecting sleeve 107 of the bracket body 100 are respectively placed on the blank rear-end support seat 603, so that the blank rear-end support seat 603 stably supports the rear end of the bracket body 100; the blank side tightening component 604 is adjusted, and the blank side tightening component 604 tightens the side of the bracket body 100 away from the ear 111; the blank front-end positioning component 602 is adjusted, and the blank front-end positioning component 602 indirectly adjusts the position of the back side plane 113 until the back side plane 113 is kept horizontal, and the outer side surface of the first connecting sleeve 101 is tightened by the blank front-end positioning component 602 to fix the bracket body 100; the blank ear detection component 605 is adjusted, and the position deviation between the actual arc profile of the ear 111 and the theoretical arc profile of the blank ear detection component 605 is obtained. If the position deviation is within a reasonable range, the quality of the blank is qualified, otherwise the quality of the blank is unqualified.

[0130] The above processing method can quickly detect whether the blank is qualified by using the blank detection fixture 600, and the clamping is relatively convenient, which is beneficial to improving the detection efficiency.

[0131] An embodiment of the present invention discloses a first positioning fixture 200, which is applied to the above processing method, as Figures 2 to 6 shown, including a first positioning support plate 201, at least one group of first tightening and fixing components, a first positioning leveling seat 2082 and a first ear support seat 2041. The first positioning support plate 201 mainly plays a supporting role, and all the first tightening and fixing components, the first positioning leveling seat 2082 and the first ear support seat 2041 are fixed on the first positioning support plate 201.

[0132] The first tightening and fixing component includes a first left tightening component 202, a first right tightening component 203, two groups of first ear tightening components 204, two groups of first front-end tightening components 205, and a first auxiliary tightening component 206. Each tightening component abuts against different parts of the bracket body 100 to limit the movement of the bracket body 100 in all directions and achieve reliable fixation of the bracket body 100.

[0133] Among them, the first left tightening component 202 and the first right tightening component 203 are respectively arranged on two opposite sides of the bracket body 100 for respectively tightening two opposite sides of the bracket body 100. Both the first left tightening component 202 and the first right tightening component 203 include an L-shaped support block, a tightening bolt arranged on the L-shaped support block, and a fastening nut sleeved on the tightening bolt. Of course, the structures of the first left tightening component 202 and the first right tightening component 203 are not limited to this. The two groups of first ear tightening components 204 are respectively arranged on two opposite sides of the first ear support seat 2041. The first ear support seat 2041 has a U-shaped receiving groove for receiving the ear 111. The two groups of first ear tightening components 204 are specifically arranged on two opposite sides of the U-shaped receiving groove for respectively tightening two opposite sides of the ear 111. Both groups of first ear tightening components 204 include a tightening nut arranged on the first ear support seat 2041 and a fastening nut sleeved on the tightening nut. The two groups of first front-end tightening components 205 are respectively arranged on the first positioning and leveling seat 2082 for respectively tightening the outer side surfaces of the first connecting sleeve 101. The two groups of first front-end tightening components 205 are both arranged on the first reference positioning plate 2083 of the first positioning and leveling seat 2082, and both include a tightening nut arranged on the first reference positioning plate 2083 and a fastening nut sleeved on the tightening nut. The first auxiliary tightening component 206 is fixedly arranged on the first positioning and leveling seat 2082 for tightening the reinforcing rib 104 of the bracket body 100. In this way, the two groups of first front-end tightening components 205 and the first auxiliary tightening component 206 are distributed in a triangular shape to achieve reliable fixation of the first end of the bracket body 100. The first positioning and leveling seat 2082 is integrally provided with a first tightening support block 2084. The first auxiliary tightening component 206 includes a tightening nut arranged on the first tightening support block 2084 and a fastening nut sleeved on the tightening nut.

[0134] Such as Figures 7 to 10As shown, the above-mentioned first positioning fixture 200 further includes a first end pressing component 207. The first end pressing component 207 includes a first end pressing plate 2071, a first rotating support base 2072, a first tensioning bolt 2073, a first locking nut 2074, and at least one first support column 210. Among them, the first end pressing plate 2071 is L-shaped and is fixedly arranged on the first positioning support plate 201. The first end pressing plate 2071 has a first end V-shaped pressing block 2075, and the first end V-shaped pressing block 2075 abuts against the outer side surfaces of both the second connecting sleeve 105 and the third connecting sleeve 107. The first rotating support base 2072 is fixedly arranged on the first positioning support plate 201, and a U-shaped rotating groove is provided at the top of the first rotating support base 2072. One end of the first tensioning bolt 2073 is rotatably connected to the U-shaped rotating groove, so that the first tensioning bolt 2073 is rotatably arranged on the first rotating support base 2072. The first end pressing plate 2071 is provided with a first limiting notch. The first locking nut 2074 is installed on the first tensioning bolt 2073. When the first tensioning bolt 2073 is caught in the first limiting notch, the first locking nut 2074 is tightened, and the first end pressing plate 2071 is pressed against the rear end of the bracket body 100 under the action of the first tensioning bolt 2073. Of course, the structure of the first end pressing component 207 is not limited to this.

[0135] The above-mentioned first positioning fixture 200 further includes at least one first support column 210 that is vertically fixed on the first positioning support plate 201 and is used to support the bracket body 100. All the first support columns 210 are vertically fixed on the first positioning support plate 201 and are all located below the bracket body 100 and abut against the support frame body to support the bracket body 100.

[0136] The above-mentioned first positioning fixture 200 further includes a first top-side pressing bolt 2091, a first top-side pressing block 2092, and a first top-side pressing nut 2093. The first top-side pressing bolt 2091 is vertically fixed on the first positioning support plate 201 and can pass through the fixing hole 109 of the bracket body 100. The first top-side pressing block 2092 is installed on the first top-side pressing bolt 2091 and is used to press the back surface of the bracket body 100. The first top-side pressing block 2092 is integrally and vertically provided with a top-side pressing edge, and the top-side pressing edge presses into the first fixing groove 115 of the bracket body 100. The first top-side pressing nut 2093 is installed on the first top-side pressing bolt 2091 and is used to press the first top-side pressing block 2092.

[0137] The first positioning fixture 200 further includes a first positioning and leveling assembly 208, which includes a first positioning and leveling seat 2082 and a first leveling bolt 2085. The first positioning and leveling seat 2082 is fixed to the first positioning support plate 201. The first reference positioning plate 2083 is L-shaped and integrally mounted on the top and adjacent sides of the first positioning and leveling seat 2082. A first tightening support block 2084 is also integrally mounted on the top of the first positioning and leveling seat 2082. The first leveling bolt 2085 is mounted on the first positioning and leveling seat 2082 to support the end surface of the first connecting sleeve 101 of the bracket body 100.

[0138] An embodiment of the present invention discloses a second positioning fixture 300, which is applied to the above-mentioned processing method, including a second positioning support plate 306 and two groups of second rear end support components 303. The two groups of second rear end support components 303 are both fixed on the second positioning support plate 306. The two groups of second rear end support components 303 are respectively abutted against the bottom of the second connecting sleeve 105 and the third connecting sleeve 107 of the bracket body 100, and are used to tighten the bottom of the second end of the bracket body 100.

[0139] Each set of second rear end support assemblies 303 includes a second rear end support base 3031, a second support adjustment bolt 3032, and a second support locking bolt 3033. The second rear end support base 3031 is fixed to the second positioning support plate 306. The second support adjustment bolt 3032 is detachably attached to the second rear end support base 3031 and is used to support the second connecting sleeve 105 or the third connecting sleeve 107. The second support locking bolt 3033 is detachably attached to the second rear end support base 3031 and is perpendicular to the second support adjustment bolt 3032. The second support locking bolt 3033 is used to tighten the second support adjustment bolt 3032, ensuring that the second support adjustment bolt 3032 remains against the second connecting sleeve 105, preventing accidental movement of the support body 100 during machining. A control handle can be provided at one end of the second support locking bolt 3033 for convenient operation.

[0140] The above-mentioned second positioning fixture 300 further includes a second rear-end pressing component 304. The second rear-end pressing component 304 includes a second rear-end fixed pressing plate 3041, at least one second rear-end pressing bolt 3042, and a second rear-end pressing nut 3043. The bottom of the second rear-end fixed pressing plate 3041 has a second pressing positioning groove, and the outer sides of both the second connecting sleeve 105 and the third connecting sleeve 107 are fitted with the second pressing positioning groove, ensuring that the second rear-end fixed pressing plate 3041 reliably presses the second connecting sleeve 105 and the third connecting sleeve 107. All the second rear-end pressing bolts 3042 are vertically fixed on the second positioning support plate 306 and all pass through the second rear-end fixed pressing plate 3041. The second rear-end pressing nut 3043 is installed on each second rear-end pressing bolt 3042 and abuts against the second rear-end fixed pressing plate 3041, so that the second rear-end fixed pressing plate 3041 is reliably pressed on the second connecting sleeve 105 and the third connecting sleeve 107.

[0141] The above-mentioned second positioning fixture 300 further includes at least one set of second tightening and fixing components 301. The second tightening and fixing components 301 include two groups. The two groups of second tightening and fixing components 301 are respectively located on two opposite sides of the bracket body 100 and are respectively used to tighten two opposite sides of the bracket body 100. Each set of second tightening and fixing components 301 includes an L-shaped support block fixed on the second positioning support plate 306, a tightening bolt arranged on the L-shaped support block, and a fastening nut sleeved on the tightening bolt.

[0142] The above-mentioned second positioning fixture 300 further includes a second front-end pressing component 302. The second front-end pressing component 302 includes a second front-end pressing bolt 3021, a second front-end pressing plate 3022, and a second front-end pressing nut 3023. The second front-end pressing bolt 3021 is fixed on the second positioning support plate 306. The second front-end pressing plate 3022 has a second engaging notch for engaging with the second front-end pressing bolt 3021. The second front-end pressing nut 3023 is installed on the second front-end pressing bolt 3021 and is used to press the second front-end pressing plate 3022.

[0143] The above-mentioned second positioning fixture 300 further includes a second pressing and fixing component 305. The structure of the second pressing and fixing component 305 is the same as that of the second front-end pressing component 302 and will not be described herein again.

[0144] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0145] In this article, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A method for processing a bracket-type part, wherein the bracket-type part has a bracket body, characterized in that: The processing method uses a first positioning fixture to fix the bracket-like parts, and the first positioning fixture is also used to perform a first machining on the bracket-like parts, and the first positioning fixture includes at least one group of first tightening and fixing components, a first end clamping component, a first positioning and leveling component, and a first top side clamping component; the processing method also uses a second positioning fixture to fix the bracket-like parts, and the second positioning fixture is also used to perform a second machining on the bracket-like parts, and the second positioning fixture includes at least one group of second tightening and fixing components, a second front end clamping component, a second rear end support component, a second rear end clamping component, and a second clamping and fixing component; the processing method includes: Adjust all the first tightening and fixing components until they tighten against the two opposite sides of the bracket body and the support ears; Adjust the first end clamping assembly until the first end clamping assembly presses against the second end of the bracket body; Adjusting the first positioning and leveling assembly until the back plane provided on the back of the bracket-like component remains horizontal; Inserting the first top-side pressing assembly into the fixing hole of the bracket body, and adjusting the first top-side pressing assembly until it presses the back side of the bracket body; Sleeve the first connecting hole onto the second positioning post of the second front-end pressing assembly; Adjust all the second tightening and fixing components until they tighten against two opposite sides of the bracket body; Adjust the second front-end pressing assembly until the first connecting sleeve having the first connecting hole is pressed tightly; Adjust the second rear end support assembly to press against the bottom of the second end of the bracket body; Adjust the second rear end clamping assembly until the second rear end clamping assembly presses and fixes the second connecting sleeve and the third connecting sleeve provided at the second end of the bracket body to the second rear end support assembly; Insert the second pressing and fixing assembly into the fixing hole, and adjust the second pressing and fixing assembly until it presses the front side of the bracket body.

2. The method for processing bracket parts according to claim 1, characterized in that: The processing method further utilizes a third positioning fixture to fix the bracket-like parts, and the third positioning fixture is also used to perform a third machining on the bracket-like parts, and the third positioning fixture includes a third inclined positioning seat, a third front end clamping assembly fixed to the third inclined positioning seat, a third left positioning assembly, a third right positioning assembly, and a third clamping and fixing assembly; the processing method further includes: Place the bracket body on the third inclined positioning seat, and sleeve the first connecting hole onto the third positioning column of the third front end pressing assembly; Insert the third left positioning pin of the third left positioning assembly into the third connecting sleeve, and simultaneously insert the third right positioning pin of the third right positioning assembly into the second connecting sleeve; Adjust the third left tightening bolt of the third left positioning assembly and the third right tightening bolt of the third right positioning assembly until they respectively tighten against the end surfaces of the third connecting sleeve and the second connecting sleeve; Adjust the third front end pressing assembly to press the first connecting sleeve; Insert the third pressing and fixing assembly into the shock-absorbing hole of the bracket body, and adjust the third pressing and fixing assembly until it presses the front surface of the bracket body; Lock the third left positioning assembly and the third right positioning assembly.

3. The method for processing bracket parts according to claim 2, characterized in that: The processing method further utilizes a finished product inspection fixture to inspect the finished part obtained after the third machining, wherein the finished product inspection fixture includes a finished product positioning assembly, a first go / no-go gauge, a second go / no-go gauge, a third go / no-go gauge, a fourth go / no-go gauge, and a fifth go / no-go gauge; the processing method further includes: Using the finished positioning assembly to press against the pressure plate of the bracket body; detecting the first connecting hole using the first go / no-go gauge; Using the second go / no-go gauge to detect the second connecting hole of the second connecting sleeve; Using the third go / no-go gauge to detect the third connecting hole of the third connecting sleeve; Using the fourth go / no-go gauge to detect the first through hole of the bracket body; The fifth go / no-go gauge is used to detect the lug through-hole of the lug.

4. The method for processing a bracket-type component according to any one of claims 1 to 3, characterized in that: The processing method further utilizes a blank detection fixture to detect the outer dimensions of the blank, wherein the blank detection fixture includes a blank front end positioning component, a blank rear end support seat, a blank side tightening component, and a blank lug detection component opposite to the blank side tightening component; the processing method further includes: Sleeve the first connecting hole onto the blank positioning column of the blank front end positioning assembly; Place the second connecting sleeve and the third connecting sleeve of the bracket body on the rear end support seat of the blank respectively; Adjust the side tightening assembly of the blank until it presses against the side of the bracket body away from the support ear; Adjusting the front end positioning assembly of the blank until the back side plane remains horizontal, and using the front end positioning assembly of the blank to press against the outer side surface of the first connecting sleeve; The blank lug detection assembly is adjusted, and a position deviation between an actual arc profile of the lug and a theoretical arc profile of the blank lug detection assembly is obtained.

5. A first positioning fixture, applied to the method for processing a bracket-type part according to any one of claims 1 to 4, characterized in that: The invention comprises a first positioning support plate (201), at least one set of first jacking and fixing components, a first positioning and leveling seat (2082) and a first lug support seat (2041), wherein all of the first jacking and fixing components, the first positioning and leveling seat (2082) and the first lug support seat (2041) are fixedly arranged on the first positioning support plate (201), and all of the first jacking and fixing components comprise: a first left tightening assembly (202) and a first right tightening assembly (203) respectively provided on two opposite sides of the bracket body (100) and used to tighten the two opposite sides of the bracket body (100); Two groups of first lug tightening assemblies (204) are respectively arranged on two opposite sides of the first lug support seat (2041) and are used to tighten the two opposite sides of the lug (111) respectively; Two sets of first front end tightening components (205) respectively arranged on the first positioning and leveling seat (2082) and used to tighten the outer side surface of the first connecting sleeve (101) respectively; A first auxiliary tightening assembly (206) is fixed to the first positioning and leveling seat (2082) and is used to tighten the reinforcing ribs of the bracket body (100).

6. The first positioning fixture according to claim 5, characterized in that: It also includes a first end clamping assembly (207), wherein the first end clamping assembly (207) includes: a first end pressure plate (2071) fixedly mounted on the first positioning support plate (201); A first rotating support seat (2072) fixedly mounted on the first positioning support plate (201); a first tightening bolt (2073) rotatably disposed on the first rotating support seat (2072); a first locking nut (2074) mounted on the first tightening bolt (2073) and used to lock the first tightening bolt (2073) when the first tightening bolt (2073) is engaged with a first limiting notch provided in the first end pressure plate (2071); The first end pressure plate (2071) comprises a first end V-shaped pressure block (2075) respectively abutting against the outer side surfaces of the second connecting sleeve (105) and the third connecting sleeve (107) provided at the end of the bracket body (100).

7. The first positioning fixture according to claim 5, characterized in that: The first top side pressing assembly includes: a first top side pressing bolt (2091) vertically fixed to the first positioning support plate (201); a first top side pressing block (2092) mounted on the first top side pressing bolt (2091) and used to press the back side of the bracket body (100); a first top side clamping nut (2093) mounted on the first top side clamping bolt (2091); The first top side pressing block (2092) is integrally and vertically provided with a top side pressing edge, and the top side pressing edge is pressed into the first fixing groove of the bracket body (100).

8. A second positioning fixture, applied to the method for processing a bracket-type part according to any one of claims 1 to 4, characterized in that: The invention comprises a second positioning support plate (306) and two groups of second rear end support components (303) fixed to the second positioning support plate (306) and respectively abutting against the second connecting sleeve (105) and the third connecting sleeve (107) of the bracket body (100), wherein each group of the second rear end support components (303) comprises: A second rear end support seat (3031) fixedly mounted on the second positioning support plate (306); A second support adjustment bolt (3032) is detachably provided with the second rear end support seat (3031) and is used to support the second connecting sleeve (105) or the third connecting sleeve (107); A second support locking bolt (3033) is detachably provided on the second rear end support seat (3031) and is used to tighten the second support adjusting bolt (3032).

9. The second positioning fixture according to claim 8, characterized in that: The second rear end pressing assembly (304) includes: A second rear end fixed pressing plate (3041) having a second pressing and positioning groove; at least one second rear end clamping bolt (3042) vertically fixed to the second positioning support plate (306) and passing through the second rear end fixed pressure plate (3041); a second rear end clamping nut (3043) mounted on the second rear end clamping bolt (3042) and abutting against the second rear end fixed pressure plate (3041); The outer side surfaces of both the second connecting sleeve (105) and the third connecting sleeve (107) coincide with the second pressing and positioning groove.

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