Spare tire support back face machining clamp

Abstract

The utility model relates to a spare tire support back face machining clamp which comprises two oppositely-arranged first L-shaped plates and a first bridge plate arranged between the two first L-shaped plates, and a first spare tire support fixing end clamping mechanism and a spare tire support hanging end clamping mechanism are fixedly arranged on the first bridge plate. And a horizontal detection mechanism is arranged on the spare tire bracket suspension end clamping mechanism. The spare tire support back face machining clamp has the advantages that the horizontal detection mechanism is arranged to detect whether a spare tire support is horizontal or not when the spare tire support is arranged on the spare tire support back face machining clamp, and the auxiliary limiting plate is arranged to guide and limit placement of the spare tire support. The first spare tire support fixing end clamping mechanism and the spare tire support hanging end clamping mechanism can clamp the spare tire support conveniently.

Description

Technical Field

[0001] The utility model relates to the field of milling machining, in particular to a machining fixture for the back side of a spare tire bracket. Background Art

[0002] A spare tire bracket usually includes a fixed end and a suspension end. The fixed end is used to connect with the vehicle body to fix the spare tire bracket, and the suspension end is used to install a spare tire box and suspend a spare tire. Therefore, when machining the spare tire bracket, it is necessary to machine the spare tire bracket twice on the front and back sides to mill mounting holes at the fixed end and the suspension end respectively. In order to ensure that the spare tire bracket can be stably fixed on the vehicle and can suspend the spare tire, it is necessary to keep the spare tire bracket horizontal during milling. Once it is tilted, the mounting holes will be tilted, which will affect the stability of the spare tire bracket after installation. Summary of the Invention

[0003] The utility model mainly solves the above problems and provides a machining fixture for the back side of a spare tire bracket that can detect whether the spare tire bracket is horizontal.

[0004] A machining fixture for the back side of a spare tire bracket includes two relatively arranged first L-shaped plates and a first bridge plate arranged between the two first L-shaped plates. A first clamping mechanism for the fixed end of the spare tire bracket and a clamping mechanism for the suspension end of the spare tire bracket are fixedly arranged on the first bridge plate, and a horizontal detection mechanism is arranged on the clamping mechanism for the suspension end of the spare tire bracket.

[0005] As a preferred scheme of the above scheme, the first clamping mechanism for the fixed end of the spare tire bracket includes a first mounting block, a first power cylinder, a first ejector rod and a first pressing arm. The first mounting block is fixedly arranged on the first bridge plate. The first power cylinder and the first ejector rod are fixedly arranged at the upper end of the first mounting block. The first pressing arm is horizontally arranged on the piston rod of the power cylinder, and a first pressing head is arranged at the end of the first pressing arm. The first pressing head is located directly above the first ejector rod.

[0006] As a preferred scheme of the above scheme, an air blowing pipe is arranged on the side surface of the first mounting block, and the air blowing pipe is used to blow air on the upper end surface of the first ejector rod.

[0007] As a preferred scheme of the above scheme, the clamping mechanism for the suspension end of the spare tire bracket includes two horizontally and relatively arranged abutting heads. An installation seat is arranged between the abutting heads. L-shaped pressing arms are arranged on both sides of the installation seat. Abutting blocks are arranged at the first ends of the L-shaped pressing arms. The second ends of the L-shaped pressing arms are driven by a second power cylinder. The middle parts of the L-shaped pressing arms are rotatably connected with the installation seat. The abutting blocks and the abutting heads cooperate to clamp the suspension end of the spare tire bracket.

[0008] As a preferred solution of the above solution, the horizontal detection mechanism includes a plurality of pressure sensors arranged between the abutting block and the L-shaped pressing arm, and the pressure sensors are annularly distributed.

[0009] As a preferred solution of the above solution, an auxiliary limit plate is provided on the first bridge plate.

[0010] As a preferred solution of the above solution, an auxiliary support column is provided on the first mounting block.

[0011] The advantages of the present utility model are as follows: a horizontal detection mechanism is provided, which can detect whether the spare tire bracket is horizontal when it is on the back processing fixture of the spare tire bracket; an auxiliary limit plate is provided, which can guide and limit the placement of the spare tire bracket, facilitating the clamping of the spare tire bracket by the clamping mechanism at the fixed end of the first spare tire bracket and the clamping mechanism at the hanging end of the spare tire bracket. Description of the Drawings

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the back processing fixture of the spare tire bracket in the embodiment.

[0013] Figure 2 It is another three-dimensional structural schematic diagram of the back processing fixture of the spare tire bracket in the embodiment.

[0014] Figure 3 For Figure 2 The partial enlarged view of area A in

[0015] 1 - First L-shaped plate; 2 - First bridge plate; 3 - Spare tire bracket; 4 - First power cylinder; 5 - First pressing arm; 6 - First ejector rod; 7 - Auxiliary limit plate; 8 - Mounting hole; 9 - Blowing pipe; 10 - Mounting seat; 11 - Second power cylinder; 12 - L-shaped pressing arm; 13 - Head; 14 - Abutting block. Detailed Embodiment

[0016] Next, through the embodiments and in combination with the drawings, the technical solutions of the present invention will be further described.

[0017] Embodiment:

[0018] A back processing fixture for a spare tire bracket in this embodiment is used for processing the back and side surfaces of the spare tire bracket.

[0019] As Figure 1 And Figure 2As shown in the figure, the machining fixture for the back side of the spare tire bracket includes two relatively arranged first L-shaped plates 1 and a first bridge plate 2 disposed between the two first L-shaped plates 1. A first clamping mechanism for the fixed end of the spare tire bracket and a clamping mechanism for the hanging end of the spare tire bracket are fixedly arranged on the first bridge plate 2. A horizontal detection mechanism is arranged on the clamping mechanism for the hanging end of the spare tire bracket. In addition, an auxiliary limiting plate 7 for guiding and limiting the placement of the spare tire bracket is also arranged on the first bridge plate 2.

[0020] The first clamping mechanism for the fixed end of the spare tire bracket includes a first mounting block, a first power cylinder 4, a first ejector rod 6 and a first pressing arm 5. The first mounting block is fixedly arranged on the first bridge plate 2. The first power cylinder 4 and the first ejector rod 6 are fixedly arranged at the upper end of the first mounting block. The first pressing arm 5 is horizontally arranged on the piston rod of the power cylinder 4. A first pressing head is arranged at the end of the first pressing arm 5. The first pressing head is located directly above the first ejector rod. The first pressing head and the first ejector rod cooperate to fix the spare tire bracket. In addition, an air blowing pipe 9 is also arranged on the side of the first mounting block. The air blowing pipe is used to blow air onto the upper end surface of the first ejector rod to prevent debris from remaining on the first ejector rod and affecting the horizontality of the placement of the spare tire bracket.

[0021] In this embodiment, the fixed end of the spare tire bracket 3 includes three fixed feet, two small ones and one large one. Two mounting holes need to be milled on each of the two small fixed feet, and two mounting holes need to be milled on the large fixed foot. The large fixed foot is jointly clamped by two first clamping mechanisms for the fixed end of the spare tire bracket, and the small fixed foot is clamped by one clamping mechanism for the fixed end of the spare tire bracket. In order to keep the spare tire bracket stable before clamping, auxiliary support columns are also arranged on the first mounting blocks of the two clamping mechanisms for the fixed end of the spare tire bracket that clamp the small fixed feet. The auxiliary support columns are directly embedded into the grooves formed at the mounting hole positions to support and limit the two small fixed feet of the spare tire bracket.

[0022] As Figure 3 shown in the figure, the clamping mechanism for the hanging end of the spare tire bracket includes two horizontally and relatively arranged abutting heads 13. An installation seat 10 is arranged between the abutting heads 13. L-shaped pressing arms 12 are arranged on both sides of the installation seat 10. Abutting blocks 14 are arranged at the first ends of the L-shaped pressing arms 12. The second ends of the L-shaped pressing arms 12 are driven by a second power cylinder 11. The middle parts of the L-shaped pressing arms 12 are rotatably connected to the installation seat 10. The abutting blocks 14 and the abutting heads 13 cooperate to clamp the hanging end of the spare tire bracket.

[0023] The horizontal detection mechanism includes a plurality of pressure sensors arranged between the abutting blocks 14 and the L-shaped pressing arms 12. The pressure sensors are annularly distributed.

[0024] When using the fixture for machining the back of the spare tire bracket to clamp and fix the spare tire bracket, the hanging end of the spare tire bracket 3 is set downward and the fixed end is set upward. The first clamping mechanism for the fixed end of the spare tire bracket is used to clamp and fix the edge of the fixed end, and the clamping mechanism for the hanging end of the spare tire bracket is used to clamp and fix the hanging end of the spare tire bracket 3. After the clamping mechanism for the hanging end of the spare tire bracket clamps and fixes the hanging end, the levelness of the spare tire bracket is judged by comparing the readings of each pressure sensor. If the absolute value of the difference between the readings of each pressure sensor is less than the preset threshold, it is determined that the spare bracket is level. If the absolute value of the difference between the readings of each pressure sensor is greater than the preset threshold, it is determined that the spare tire bracket is inclined and the attitude needs to be adjusted. After determining that the spare tire bracket is level, the machine tool mills the surface of the mounting hole 8 on the back of the mounting end of the spare tire bracket and mills through holes on both sides of the hanging end of the spare tire bracket.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A spare tire bracket back processing fixture, characterized by: It includes two first L-plates arranged opposite to each other and a first bridge plate arranged between the two first L-plates, the first bridge plate is fixedly provided with a first spare tire bracket fixed end clamping mechanism and a spare tire bracket hanging end clamping mechanism, and the spare tire bracket hanging end clamping mechanism is provided with a horizontal detection mechanism.

2. The back processing fixture of the spare tire bracket according to claim 1 is characterized in that: The clamping mechanism of the fixed end of the first spare tire bracket includes a first mounting block, a first power cylinder, a first push rod and a first pressure arm. The first mounting block is fixedly arranged on the first bridge plate. The first power cylinder and the first push rod are fixedly arranged on the upper end of the first mounting block. The first pressure arm is horizontally arranged on the piston rod of the power cylinder. A first pressure head is arranged at the end of the first pressure arm. The first pressure head is located directly above the first push rod.

3. The back processing fixture of the spare tire bracket according to claim 2 is characterized in that: An air blowing pipe is provided on the side of the first mounting block, and the air blowing pipe is used for blowing air to the upper end surface of the first push rod.

4. The back processing fixture of the spare tire bracket according to claim 1 is characterized in that: The clamping mechanism of the spare tire bracket hanging end includes two horizontal and oppositely arranged abutments, a mounting seat is provided between the abutments, L-shaped pressure arms are provided on both sides of the mounting seat, a first end of the L-shaped pressure arm is provided with a block, the second end of the L-shaped pressure arm is driven by a second power cylinder, the middle part of the L-shaped pressure arm is rotatably connected to the mounting seat, and the block and the abutment cooperate to clamp the spare tire bracket hanging end.

5. The back processing fixture of the spare tire bracket according to claim 4 is characterized in that: The horizontal detection mechanism includes a plurality of pressure sensors arranged between the stop block and the L-shaped pressure arm, and the pressure sensors are distributed in a ring shape.

6. The back processing fixture of the spare tire bracket according to claim 1 is characterized by: An auxiliary limiting plate is arranged on the first bridge plate.

7. The back processing fixture of the spare tire bracket according to claim 2 is characterized by: An auxiliary support column is provided on the first mounting block.

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