CNC (computer numerical control) clamping jig for rear shell of automobile

Abstract

The utility model relates to the technical field of clamping jig equipment, in particular to a CNC (computer numerical control) clamping jig for a rear shell of an automobile, which adopts the technical scheme that the CNC clamping jig comprises a bottom plate, a plurality of mounting grooves for accommodating workpieces are formed in the top end of the bottom plate, and the CNC clamping jig is characterized in that the mounting grooves comprise a first mounting groove formed in one side of the top surface of the bottom plate and a second mounting groove formed in the other side of the top surface of the bottom plate; a second mounting groove is formed in the middle of the top face of the bottom plate, a third mounting groove is formed in the other side opposite to the first mounting groove, and the second mounting groove is rotationally symmetrical with the first mounting groove and the third mounting groove along the axis. The second mounting groove located in the middle is formed in the bottom plate, the second mounting groove, the first mounting groove and the third mounting groove are symmetrically arranged along the rotating centers of the second mounting groove and the first mounting groove and the third mounting groove respectively, the shapes of three workpieces in the same X-axis direction are complementary, interference of structural components among the workpieces during machining is avoided, and machining precision is improved. Meanwhile, due to the fact that the shapes of the multiple workpieces are complementary, the overall size of the clamping jig can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixture equipment, in particular to a CNC clamping fixture for a rear shell of an automobile. Background Art

[0002] In the automotive manufacturing process, the rear shell is a critical component, and its machining accuracy significantly impacts the overall assembly precision and appearance of the vehicle. When batch-clamping automotive rear shells using clamping jigs, traditional clamping jigs focus on clamping stability and strength. However, due to the complex shape and varying dimensions of the rear shells, they are prone to spatially intertwining with adjacent rear shell components. Therefore, interference between adjacent rear shells is a common problem during CNC machining. This interference not only causes damage to the workpiece and reduces machining accuracy, but can also cause equipment failure and even pose a safety threat to operators.

[0003] In view of this, we propose a CNC clamping fixture for the rear shell of an automobile to solve the existing problem. Utility Model Content

[0004] The purpose of the present utility model is to provide a CNC clamping fixture for a rear shell of an automobile to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A CNC clamping fixture for a rear shell of an automobile, comprising a base plate, a plurality of mounting grooves for accommodating workpieces being provided at the top of the base plate, and characterized in that: the mounting grooves include a first mounting groove provided on one side of the top surface of the base plate, a second mounting groove being provided in the middle of the top surface of the base plate, and a third mounting groove being provided on the other side relative to the first mounting groove, the second mounting groove being rotationally symmetrical with the first mounting groove and the third mounting groove along the axis, the first mounting groove being provided with a first clamping mechanism near one end of the side of the base plate, a second clamping mechanism being provided between the first mounting groove and the second mounting groove, a third clamping mechanism being provided between the second mounting groove and the third mounting groove, and a fourth clamping mechanism being provided at the other end of the third mounting groove.

[0006] Preferably, there are several first mounting grooves, and the first mounting grooves are evenly distributed on the top end surface of the base plate along the width direction of the base plate. The number of the second mounting grooves and the third mounting grooves corresponds to the first mounting grooves, and they are all evenly distributed along the width direction of the base plate.

[0007] Preferably, the first clamping mechanism includes a first driving member fixedly mounted on the bottom of the base plate, the first driving member is connected to a first pressing block through the base plate, and the first pressing block is provided with a pressing arm extending toward the first installation slot.

[0008] Preferably, the second clamping mechanism includes a second driving member fixedly arranged on the bottom end surface of the bottom plate between the first mounting groove and the second mounting groove, and the second driving member is connected to a second pressing block through the bottom plate.

[0009] Preferably, the second pressing block is an I-shaped structure, and pressing arms are respectively extended from both ends of the second pressing block toward the side ends of the first installation slot and the second installation slot.

[0010] Preferably, the third clamping mechanism includes a third driving member fixedly arranged at one end of the bottom of the bottom plate between the second mounting groove and the third mounting groove, and the third driving member passes through the bottom plate and is connected to a third pressing block.

[0011] Preferably, the third pressing block is an I-shaped structure, and the third pressing block is respectively extended toward the second installation slot and the third installation slot and connected with symmetrically arranged pressing arms.

[0012] Preferably, the fourth clamping mechanism includes a fourth driving member fixed on the bottom surface of the base plate between the third mounting slot and the adjacent side of the third mounting slot, and the fourth driving member passes through the base plate and is connected to a fourth pressing block.

[0013] Preferably, the fourth pressing block and the first pressing block are symmetrically arranged along the central Y axis of the bottom plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a second mounting groove in the middle of the base plate, and the second mounting groove is symmetrically arranged with the first mounting groove and the third mounting groove along their respective rotation centers, so that the shapes of the three workpieces in the same X-axis direction are complementary, thereby avoiding interference between structural components of the workpieces during processing. At the same time, due to the complementary shapes of multiple workpieces, the overall volume of the clamping fixture can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0017] In the figure: 1, bottom plate; 2, first pressure block; 3, first driving member; 4, first mounting slot; 5, second pressure block; 6, second driving member; 7, second mounting slot; 8, third pressure block; 9, third driving member; 10, third mounting slot; 11, fourth driving member; 12, fourth pressure block. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 and Figure 2 As shown, the utility model proposes a CNC clamping fixture for a rear shell of an automobile, including a base plate 1, and a plurality of mounting grooves for accommodating workpieces are provided at the top of the base plate 1, characterized in that: the mounting groove includes a first mounting groove 4 arranged on one side of the top surface of the base plate 1, a second mounting groove 7 is provided in the middle of the top surface of the base plate 1, and a third mounting groove 10 is provided on the other side relative to the first mounting groove 4, the second mounting groove 7 is rotationally symmetrical with the first mounting groove 4 and the third mounting groove 10, respectively, and is used to change the installation orientation between the workpieces so that the shapes are complementary when the workpieces are clamped to avoid interference, a first clamping mechanism is provided at one end of the first mounting groove 4 near the side of the base plate 1, a second clamping mechanism is provided between the first mounting groove 4 and the second mounting groove 7, a third clamping mechanism is provided between the second mounting groove 7 and the third mounting groove 10, and a fourth clamping mechanism is provided at the other end of the third mounting groove 10, for cooperating with the wall panel to clamp and fix the workpiece.

[0021] In the embodiment, there are several first mounting grooves 4, and the several first mounting grooves 4 are equidistantly distributed on the top end surface of the base plate 1 along the width direction of the base plate 1. The number of second mounting grooves 7 and third mounting grooves 10 corresponds to that of the first mounting grooves 4, and they are all equidistantly arranged along the width direction of the base plate 1.

[0022] In an embodiment, the first clamping mechanism includes a first driving member 3 fixedly mounted on the bottom of the base plate 1, the first driving member 3 passes through the base plate 1 and is connected to a first pressure block 2, the first pressure block 2 is provided with a pressure arm extending toward the first mounting groove 4, for clamping the outer end of the first mounting groove 4.

[0023] In the embodiment, the second clamping mechanism includes a second driving member 6 fixedly arranged on the bottom end surface of the base plate 1 between the first mounting groove 4 and the second mounting groove 7 . The second driving member 6 passes through the base plate 1 and is connected to the second pressing block 5 .

[0024] In the embodiment, the second pressure block 5 is an "I" structure, and pressure arms are extended from both ends of the second pressure block 5 toward the side ends of the first installation groove 4 and the second installation groove 7, respectively, for fixing and clamping the workpieces in the first installation groove 4 and the second installation groove 7, respectively.

[0025] In the embodiment, the third clamping mechanism includes a third driving member 9 fixedly arranged at one end of the bottom of the base plate 1 between the second mounting groove 7 and the third mounting groove 10 . The third driving member 9 passes through the base plate 1 and is connected to a third pressing block 8 .

[0026] In the embodiment, the third pressure block 8 is an "I" structure, and the third pressure block 8 extends toward the second installation groove 7 and the third installation groove 10 respectively and is connected with symmetrically arranged pressure arms, which are used to fix and clamp the workpieces in the second installation groove 7 and the third installation groove 10 respectively.

[0027] In an embodiment, the fourth clamping mechanism includes a fourth driving member 11 fixed on the bottom surface of the base plate 1 relative to the third mounting groove 10 and between the adjacent side edges of the third mounting groove 10. The fourth driving member 11 passes through the base plate 1 and is connected to a fourth pressure block 12 for clamping and fixing the outer end of the workpiece in the third mounting groove 10.

[0028] In the embodiment, the fourth pressing block 12 and the first pressing block 2 are symmetrically arranged along the central Y axis of the base plate 1 .

[0029] The working principle of a CNC clamping fixture for a rear shell of an automobile based on Example 1 is as follows: when the utility model is used, the workpiece is installed in the installation groove on the base plate 1. In the X-axis direction of the base plate 1, the second installation groove 7 and the first installation groove 4 and the third installation groove 10 are rotationally symmetrical, so that the three workpieces installed on the same X-axis are complementary in shape to avoid interference between the workpieces. Then, the left and right sides of the workpiece in the first installation groove 4 are fixedly clamped by the first pressure block 2 and the second pressure block 5 respectively, and the workpiece in the second installation groove 7 is clamped and fixed by the other end of the second pressure block 5 and the third pressure block 8 relative to one end of the second pressure block 5 respectively, and the workpiece in the third installation groove 10 is clamped and installed by the other end of the third pressure block 8 and the fourth pressure block 12, thereby completing the preparation work before workpiece processing.

[0030] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A CNC clamping fixture for a rear shell of an automobile, comprising a base plate (1), wherein the top of the base plate (1) is provided with a plurality of mounting grooves for accommodating workpieces, characterized in that: The mounting groove comprises a first mounting groove (4) arranged on one side of the top surface of the base plate (1); a second mounting groove (7) is provided in the middle of the top surface of the base plate (1); a third mounting groove (10) is provided on the other side relative to the first mounting groove (4); the second mounting groove (7) is rotationally symmetrical with the first mounting groove (4) and the third mounting groove (10) along an axis; a first clamping mechanism is provided at one end of the first mounting groove (4) close to the side of the base plate (1); a second clamping mechanism is provided between the first mounting groove (4) and the second mounting groove (7); a third clamping mechanism is provided between the second mounting groove (7) and the third mounting groove (10); and a fourth clamping mechanism is provided at the other end of the third mounting groove (10).

2. The CNC clamping fixture for the rear cover of an automobile according to claim 1, characterized in that: A plurality of the first mounting grooves (4) are provided, and the plurality of the first mounting grooves (4) are equidistantly distributed on the top end surface of the bottom plate (1) along the width direction of the bottom plate (1); the number of the second mounting grooves (7) and the third mounting grooves (10) corresponds to the number of the first mounting grooves (4), and are all equidistantly arranged along the width direction of the bottom plate (1).

3. The CNC clamping fixture for the rear cover of an automobile according to claim 1, characterized in that: The first clamping mechanism comprises a first driving member (3) fixedly mounted on the bottom of the base plate (1); the first driving member (3) passes through the base plate (1) and is connected to a first pressing block (2); the first pressing block (2) is provided with a pressing arm extending in the direction of the first mounting groove (4).

4. The CNC clamping fixture for the rear cover of an automobile according to claim 1, characterized in that: The second clamping mechanism comprises a second driving member (6) fixedly arranged on the bottom end surface of the base plate (1) between the first mounting groove (4) and the second mounting groove (7); the second driving member (6) passes through the base plate (1) and is connected to a second pressing block (5).

5. The CNC clamping fixture for the rear cover of an automobile according to claim 4, characterized in that: The second pressing block (5) is of an "I" structure, and pressing arms are provided at both ends of the second pressing block (5) extending toward the side ends of the first installation groove (4) and the second installation groove (7), respectively.

6. The CNC clamping fixture for the rear cover of an automobile according to claim 1, characterized in that: The third clamping mechanism comprises a third driving member (9) fixedly arranged at one end of the bottom of the base plate (1) between the second mounting groove (7) and the third mounting groove (10); the third driving member (9) passes through the base plate (1) and is connected to a third pressing block (8).

7. The CNC clamping fixture for the rear cover of an automobile according to claim 6, characterized in that: The third pressing block (8) is of an "I" structure, and the third pressing block (8) is respectively extended in the direction of the second installation slot (7) and the third installation slot (10) and is connected with symmetrically arranged pressing arms.

8. The CNC clamping fixture for the rear cover of an automobile according to claim 1, characterized in that: The fourth clamping mechanism comprises a fourth driving member (11) fixed on the bottom surface of the base plate (1) between the third mounting groove (10) and the adjacent side of the third mounting groove (10), and the fourth driving member (11) passes through the base plate (1) and is connected to a fourth pressing block (12).

9. The CNC clamping fixture for the rear cover of an automobile according to claim 8, characterized in that: The fourth pressing block (12) and the first pressing block (2) are symmetrically arranged along the central Y axis of the bottom plate (1).

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