Tooth profile precision positioning tool of automatic rack forging production line

Abstract

The utility model discloses a tooth profile precision positioning tool of an automatic rack forging production line, which comprises a fixed base, a supporting assembly and a positioning assembly, the supporting assembly and the positioning assembly are both fixedly arranged on the fixed base, and two ends of a rack forge piece are respectively provided with a light bar section and a tooth profile section. A tooth groove extending along the axis of the rack forge piece is formed in the tooth-shaped section, the supporting assembly is supported and fixed corresponding to the light bar section, the positioning assembly is supported and positioned corresponding to the tooth-shaped section, limiting teeth are arranged on the positioning assembly, and the limiting teeth are in meshed connection with teeth in the tooth groove; the positioning assembly and the supporting assembly are arranged, so that the two ends of the rack forge piece are supported, it is guaranteed that the rack forge piece is stable in the horizontal state, meanwhile, the rack forge piece can be accurately positioned in the axial direction and stopped from rotating in the circumferential direction through meshing of the teeth and the limiting teeth, and therefore precise positioning operation of the rack forge piece is achieved; and the situations of workpiece appearance damage, tooth surface crushing damage and the like caused by inaccurate positioning are avoided.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts production, in particular to a tooth profile precision positioning tool for a rack automatic forging production line. Background Art

[0002] In the rack automated forging production line, the mechanical gripper can automatically grab the rack, but for multi-step forging, especially when transferring the rack between multiple presses, a precision positioning turntable is required to accurately position the processed rack before the next step of forming. When using CNC machine tools for post-forging processing of rack forgings, a precision turntable is also used to accurately position the workpiece. Therefore, in the field of rack forgings and post-forging processing, rack precision positioning tooling is an indispensable device.

[0003] Most existing rack positioning devices use positioning structures such as clamping and limiting for positioning. However, after the rack is forged, the forged tooth structure has processing errors in the overall size due to the influence of processing force. For example, the distance from the center tooth groove to the end face of the tooth area of ​​the rack forging cannot ensure that each forging is completely consistent after the tooth is formed, and its fluctuation can generally reach more than 2mm. Most existing rack positioning devices use the two ends of the rack as reference surfaces for positioning. Due to the size difference between the tooth area and the end face caused by processing, the existing rack positioning devices cannot accurately position the rack, especially the tooth area. Inaccurate positioning cannot meet the processing accuracy requirements of the product, which will lead to extremely unstable dimensions of the workpiece after processing, and even damage to the appearance of the workpiece, crushing of the tooth surface, etc.

[0004] In view of the above-mentioned defects, the inventor of the present invention finally obtained the present invention after a long period of research and practice. Utility Model Content

[0005] In order to solve the above-mentioned technical defects, the technical solution adopted by the utility model is to provide a tooth shape precision positioning tooling for an automated rack forging production line, including a fixed base, a support assembly and a positioning assembly, wherein the support assembly and the positioning assembly are both fixedly arranged on the fixed base, and the two ends of the rack forging are respectively arranged as a light rod segment and a tooth profile segment, and the tooth profile segment is provided with a tooth groove extending along the axis of the rack forging, the support assembly supports and fixes the light rod segment, and the positioning assembly supports and positions the tooth profile segment, and a limiting tooth is arranged on the positioning assembly, and the limiting tooth is meshed and connected with the teeth in the tooth groove.

[0006] Preferably, the positioning assembly includes a first positioning block, a second positioning block and a third positioning block, the upper end surfaces of the first positioning block, the second positioning block and the third positioning block are all provided with the limiting teeth, and the first positioning block and the third positioning block respectively correspond to the two ends of the tooth groove, the limiting teeth of the first positioning block and the third positioning block are meshed and connected with the teeth at the two ends of the tooth groove, the second positioning block corresponds to the center of the tooth groove, the limiting teeth of the second positioning block are meshed and connected with the teeth at the center of the tooth groove, and gaps are provided between the first positioning block and the second positioning block, and between the second positioning block and the third positioning block.

[0007] Preferably, the fixed base includes a fixing frame, a bracket and a support plate, the fixing frame includes a mounting plate and a support leg, the mounting plate is horizontally fixed to the upper end of the support leg, the bracket is fixedly arranged on one side of the mounting plate, the support plate is fixedly arranged on one side of the mounting plate, and the support plate is fixedly connected to one end of the bracket, the support assembly is arranged on the mounting plate, and the positioning assembly is arranged on the bracket.

[0008] Preferably, the support assembly includes a support seat, a support groove is provided on the support seat, the cross-section of the support groove is set to be an isosceles trapezoid, the extension direction of the support groove is consistent with the axial direction of the rack forging, the groove width of the support groove gradually decreases from top to bottom, the light rod segment is arranged in the support groove, and the light rod segment is in close contact with the groove bottom and two groove walls of the support groove.

[0009] Preferably, a first support hole is provided at the bottom of the support seat, a second support hole is provided on the mounting plate, a support bolt passes through the second support hole and is threadedly connected to the first support hole, two first support holes are provided on the support seat, and the two first support holes are symmetrically arranged.

[0010] Preferably, the mounting plate is provided with a plurality of mounting hole groups, the mounting hole groups including two second support holes, the two second support holes of the same mounting hole group are respectively arranged in one-to-one correspondence with the two first support holes on the support seat; the arrangement direction of each mounting hole group is consistent with the extension direction of the support groove.

[0011] Preferably, the bracket includes a support plate and a reinforcement plate, the extension directions of the support plate and the reinforcement plate are consistent, the reinforcement plate is vertically arranged on the lower surface of the support plate, the upper end of the support plate is vertically fixedly connected to the bottom of the support plate, and the end of the reinforcement plate is vertically fixed to the support plate.

[0012] Preferably, the positioning assembly includes a positioning seat, which is configured as a strip extending in a straight line, the extension direction of the positioning seat is consistent with the extension direction of the support plate, the first positioning block, the second positioning block and the third positioning block are all arranged on the positioning seat, and the arrangement direction of the first positioning block, the second positioning block and the third positioning block is consistent with the extension direction of the positioning seat.

[0013] Preferably, the upper surface height of the support plate is lower than the upper surface height of the mounting plate.

[0014] Preferably, two support blocks are provided on the positioning seat, and a shaping groove is provided on the support block. The shaping groove is a circular arc groove, and the circular arc radius of the shaping groove is consistent with the cross-sectional radius of the corresponding rack forging. The first positioning block, the second positioning block and the third positioning block are arranged between the two support blocks.

[0015] Compared with the prior art, the beneficial effect of the utility model is that: the utility model realizes the support of both ends of the rack forging by providing the positioning component that meshes with the tooth grooves on the rack forging, and the supporting component that supports the ends of the rack forging, thereby ensuring the stability of the horizontal state of the rack forging, and at the same time, through the meshing of the teeth and the limiting teeth, the rack forging can be accurately positioned in the axial direction and stopped from rotating in the circumferential direction, thereby realizing the precise positioning operation of the rack forging and avoiding damage to the appearance of the workpiece, tooth surface compression, etc. caused by inaccurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural view of the tooth profile precision positioning tooling of the rack automated forging production line;

[0017] Figure 2 It is a structural front view of the tooth profile precision positioning tooling of the rack automated forging production line;

[0018] Figure 3 is a top view of the structure of the positioning assembly;

[0019] Figure 4 A bottom view of the structure of the positioning assembly;

[0020] Figure 5 It is a structural cross-sectional view of the positioning component.

[0021] The numbers in the figure represent:

[0022] 1-fixed base; 2-support assembly; 3-positioning assembly; 4-rack forging; 11-bracket; 12-support plate; 13-mounting plate; 14-support leg; 15-second support hole; 21-support slot; 31-first positioning block; 32-second positioning block; 33-third positioning block; 34-positioning seat; 35-support block; 36-first positioning hole; 37-fixing hole; 38-fixing pin; 39-second positioning hole. DETAILED DESCRIPTION

[0023] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] like Figure 1 , Figure 2 As shown, Figure 1 This is a three-dimensional structural view of the tooth profile precision positioning tooling of the rack automated forging production line. Figure 2 It is a structural front view of the tooth profile precision positioning tooling of the rack automated forging production line.

[0026] The tooth profile precision positioning tooling of the rack automated forging production line described in the utility model comprises a fixed base 1, a support assembly 2 and a positioning assembly 3, wherein the support assembly 2 and the positioning assembly 3 are both fixedly arranged on the fixed base 1, and the two ends of the rack forging 4 are respectively arranged as a light rod segment and a tooth profile segment, and the tooth profile segment is provided with a tooth groove extending along the axis of the rack forging 4, the support assembly 2 is supported and fixed corresponding to the light rod segment, and the positioning assembly 3 is supported and positioned corresponding to the tooth profile segment, and a limiting tooth is arranged on the positioning assembly 3, and the limiting tooth is meshedly connected with the tooth in the tooth groove, thereby realizing the precise positioning of the tooth profile segment by the positioning assembly 3.

[0027] Preferably, the positioning assembly 3 includes a first positioning block 31, a second positioning block 32 and a third positioning block 33, the upper end surfaces of the first positioning block 31, the second positioning block 32 and the third positioning block 33 are all provided with the limiting teeth, and the first positioning block 31 and the third positioning block 33 correspond to the two ends of the tooth groove respectively, the limiting teeth of the first positioning block 31 and the third positioning block 33 are meshed and connected with the teeth at the two ends of the tooth groove, the second positioning block 32 corresponds to the center of the tooth groove, the limiting teeth of the second positioning block 32 are meshed and connected with the teeth at the center of the tooth groove, and gaps are provided between the first positioning block 31 and the second positioning block 32, and between the second positioning block 32 and the third positioning block 33.

[0028] The structural arrangement of the first positioning block 31, the second positioning block 32 and the third positioning block 33 can realize the three-point positioning of the tooth socket by the positioning assembly 3, and can effectively ensure the effective support of the teeth in the tooth socket area while making the teeth stably fit with the limiting teeth, thereby improving the precise positioning of the rack forging 4, and also preventing the rack forging 4 from being misplaced in the reverse direction. If the rack forging 4 is misplaced, the teeth and the limiting teeth will be misaligned and tilted or dropped, effectively preventing errors from occurring; at the same time, the tooth shape positioning can make the rack forging 4 accurately positioned in the axial direction and stop rotation in the circumferential direction.

[0029] The utility model provides the positioning assembly 3 that meshes with the tooth grooves on the rack forging 4, and the supporting assembly 2 that supports the end of the rack forging 4, thereby supporting both ends of the rack forging 4 and ensuring the stability of the horizontal state of the rack forging 4. At the same time, through the meshing of the teeth with the limiting teeth, the rack forging 4 can be accurately positioned in the axial direction and stopped from rotating in the circumferential direction, thereby realizing the precise positioning operation of the rack forging 4 and avoiding damage to the appearance of the workpiece and pressure damage to the tooth surface caused by inaccurate positioning.

[0030] Embodiment 2

[0031] The fixed base 1 includes a fixed frame, a bracket 11 and a support plate 12, the fixed frame includes a mounting plate 13 and a support leg 14, the mounting plate 13 is horizontally fixed to the upper end of the support leg 14 to achieve a stable setting of the fixed frame, the bracket 11 is fixedly set on one side of the mounting plate 13, the support plate 12 is fixedly set on one side of the mounting plate 13, and the upper end of the support plate 12 is fixedly connected to the bottom of one end of the bracket 11 to achieve stable support for the bracket 11, the support assembly 2 is arranged on the mounting plate 13, and the positioning assembly 3 is arranged on the bracket 11, thereby reducing the overall occupied area of ​​the tooth shape precision positioning tooling of the rack automated forging production line, and is effectively suitable for rack forgings 4 of different lengths.

[0032] Preferably, the support assembly 2 includes a support seat, a support groove 21 is provided on the support seat, the cross-section of the support groove 21 is set to be an isosceles trapezoid, the extension direction of the support groove 21 is consistent with the axial direction of the rack forging 4, the groove width of the support groove 21 gradually decreases from top to bottom, the optical rod segment is arranged in the support groove 21, and the optical rod segment is in close contact with the groove bottom and two groove walls of the support groove 21, thereby realizing the effective support of the rack forging 4 by the support seat, a first support hole is provided at the bottom of the support seat, and a second support hole 15 is provided on the mounting plate 13, and the support bolt passes through the second support hole 15 and is threadedly connected to the first support hole, thereby realizing the detachable connection of the support seat on the mounting plate 13.

[0033] Generally, two first supporting holes are provided on the supporting base, and the two first supporting holes are symmetrically arranged to ensure that the connection of the supporting base on the mounting plate 13 is stable.

[0034] The mounting plate 13 is provided with a plurality of mounting hole groups, the mounting hole group including two second support holes 15, the two second support holes 15 of the same mounting hole group are respectively provided in one-to-one correspondence with the two first support holes on the support seat, and by arranging the support seat on the mounting hole groups at different positions, the support seat can be adjusted to adjust the support point of the rack forging 4, so that they can respectively correspond to the extra-long rack, the short rack and the normal rack, and can effectively support them.

[0035] The arrangement direction of each mounting hole group is consistent with the extension direction of the support groove 21, so that it can be set correspondingly according to the length of the rack forging 4. It is worth noting that the support seat can also be set on each mounting hole group so that the position of the support seat can be adjusted without disassembly to be suitable for racks of different lengths.

[0036] Embodiment 3

[0037] The bracket 11 includes a support plate and a reinforcing plate, the extension directions of the support plate and the reinforcing plate are consistent, the reinforcing plate is vertically arranged on the lower surface of the support plate, so as to achieve stable support of the support plate by the reinforcing plate, the upper end of the support plate 12 is vertically fixedly connected to the bottom of the support plate, and the end of the reinforcing plate is vertically fixed to the support plate 12, so as to form a stable support structure for the positioning assembly 3. The support plate 12 is provided with a connecting hole to achieve connection with the fixing frame.

[0038] like Figure 3 , Figure 4 As shown, Figure 3 is a top view of the structure of the positioning assembly; Figure 4The bottom view of the structure of the positioning assembly is shown in FIG. The positioning assembly 3 includes a positioning seat 34, which is a strip extending in a straight line. The extending direction of the positioning seat 34 is consistent with the extending direction of the support plate. The first positioning block 31, the second positioning block 32 and the third positioning block 33 are all arranged on the positioning seat 34, and the arrangement direction of the first positioning block 31, the second positioning block 32 and the third positioning block 33 is consistent with the extending direction of the positioning seat 34, so as to achieve effective support for the toothed segment.

[0039] Generally, the upper surface height of the support plate is lower than the upper surface height of the mounting plate 13 to form a boss, so that the end of the positioning seat 34 can be positioned and clamped to ensure that the positioning seat 34 is installed and fixed to the fixing frame.

[0040] Two support blocks 35 are arranged on the positioning seat 34, and a shaping groove is arranged on the support block 35. The shaping groove is a circular arc groove, and the circular arc radius of the shaping groove is consistent with the cross-sectional radius of the corresponding rack forging 4. The first positioning block 31, the second positioning block 32 and the third positioning block 33 are arranged between the two support blocks 35, so that the circumferential surfaces on both sides of the tooth socket can be supported and fixed by the positioning groove, so that the rack forging 4 can be corrected in the horizontal direction and positioned.

[0041] like Figure 5 As shown, Figure 5 It is a structural sectional view of the positioning assembly; both ends of the positioning seat 34 are provided with a first positioning hole 36, and the positioning seat 34 is fixedly connected to the support plate through the first positioning hole 36, and a placement groove is provided in the positioning seat 34, and the first positioning block 31, the second positioning block 32 and the third positioning block 33 are all arranged in the placement groove, and the first positioning block 31, the second positioning block 32 and the third positioning block 33 are all arranged in a modular structure, and the first positioning block 31, the second positioning block 32 and the third positioning block 33 are fixed by being placed in the placement groove and fixed to the support plate.

[0042] The first positioning block 31, the second positioning block 32 and the third positioning block 33 are all configured as rectangular blocks with the limiting teeth on the upper surface, and the slot width of the placement slot is consistent with the width of the rectangular block, so that the position limiting effect between the positioning seat 34 and the rectangular block can be achieved. The first positioning block 31, the second positioning block 32 and the third positioning block 33 can all be detachably connected to the support plate, and the positioning seat 34 is fixedly connected to the support plate through the first positioning hole 36, so as to achieve the relative position fixing between the first positioning block 31, the second positioning block 32, the third positioning block 33 and the positioning seat 34.

[0043] Specifically, a fixing hole 37 is provided on the second positioning block 32, and a fixing pin 38 is provided on the first positioning block 31 and the third positioning block 33. Inserting the fixing pin 38 into the fixing hole 37 can realize the connection between the first positioning block 31, the second positioning block 32 and the third positioning block 33, thereby forming an overall structure in a long strip state. A second positioning hole 39 is provided on the first positioning block 31 and the third positioning block 33, and the first positioning block 31, the second positioning block 32 and the third positioning block 33 can be connected to the support group as a whole through the second positioning hole 39, thereby realizing the stable connection of the positioning assembly 3. The split-block structure can also make the installation convenient, stable and reliable, and facilitate the module replacement corresponding to the limiting tooth based on the actual tooth shape.

[0044] The first positioning block 31 , the second positioning block 32 and the third positioning block 33 are made of 45 steel with a hardness of HRC23-28 to ensure stable support.

[0045] The specific usage of the utility model is as follows: first, the tooth groove of the rack forging 4 is facing downward, and the teeth at both ends and the middle teeth of the tooth groove are respectively placed in contact with the first positioning block 31, the third positioning block 33, and the second positioning block 32, which can play a positioning role, so that the rack forging 4 cannot move axially and cannot rotate axially; the cylindrical surfaces on both sides of the tooth groove are clamped in the shaping groove to prevent the rack forging 4 from swinging in the horizontal direction, which plays a role in precise positioning, and locks the position when the automated fixture clamps the rack forging 4, and the fixture clamps the rack forging 4 part between the support component 2 and the positioning component 3, and sends it to the next station for the next step of processing. After completion, the clamp returns to its original position, and then the workpiece is taken from the precise positioning tooling, and the above actions are repeated for continuous processing.

[0046] Generally, the position of the forging code on the forging line should be consistent so that the subsequent process can smoothly read the code to obtain product information. The utility model can accurately locate the position of the rack forging 4, and the code is always in the set position, which is convenient for reading the code during subsequent processing and ensuring smooth processing.

[0047] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.

Claims

1. A tooth profile precision positioning tool for a rack automated forging production line, characterized in that: It includes a fixed base, a supporting assembly and a positioning assembly, wherein the supporting assembly and the positioning assembly are both fixedly arranged on the fixed base, and the two ends of the rack forging are respectively arranged as a light rod segment and a tooth profile segment, and the tooth profile segment is provided with a tooth groove extending along the axis of the rack forging, the supporting assembly supports and fixes the light rod segment, and the positioning assembly supports and positions the tooth profile segment, and the positioning assembly is provided with a limiting tooth, and the limiting tooth is meshed and connected with the teeth in the tooth groove.

2. The tooth profile precision positioning tooling for the rack automated forging production line according to claim 1 is characterized in that: The positioning assembly includes a first positioning block, a second positioning block and a third positioning block, the upper end surfaces of the first positioning block, the second positioning block and the third positioning block are all provided with the limiting teeth, and the first positioning block and the third positioning block correspond to the two ends of the tooth groove respectively, the limiting teeth of the first positioning block and the third positioning block are meshed and connected with the teeth at the two ends of the tooth groove, the second positioning block corresponds to the center of the tooth groove, the limiting teeth of the second positioning block are meshed and connected with the teeth at the center of the tooth groove, and gaps are provided between the first positioning block and the second positioning block, and between the second positioning block and the third positioning block.

3. The tooth profile precision positioning tool for the rack automated forging production line according to claim 2, characterized in that: The fixed base includes a fixed frame, a bracket and a support plate, the fixed frame includes a mounting plate and a support leg, the mounting plate is horizontally fixed to the upper end of the support leg, the bracket is fixedly arranged on one side of the mounting plate, the support plate is fixedly arranged on one side of the mounting plate, and the support plate is fixedly connected to one end of the bracket, the support assembly is arranged on the mounting plate, and the positioning assembly is arranged on the bracket.

4. The tooth profile precision positioning tool for the rack automated forging production line according to claim 3, characterized in that: The support assembly includes a support seat, a support groove is arranged on the support seat, the cross section of the support groove is arranged to be an isosceles trapezoid, the extension direction of the support groove is consistent with the axial direction of the rack forging, the groove width of the support groove gradually decreases from top to bottom, the optical rod segment is arranged in the support groove, and the optical rod segment is in close contact with the groove bottom and two groove walls of the support groove.

5. The tooth profile precision positioning tool for the rack automated forging production line according to claim 4, characterized in that: A first supporting hole is provided at the bottom of the supporting seat, a second supporting hole is provided on the mounting plate, a supporting bolt passes through the second supporting hole and is threadedly connected to the first supporting hole, two first supporting holes are provided on the supporting seat, and the two first supporting holes are symmetrically arranged.

6. The tooth profile precision positioning tool for the rack automated forging production line according to claim 5, characterized in that: A plurality of mounting hole groups are arranged on the mounting plate, and the mounting hole groups include two second supporting holes. The two second supporting holes of the same mounting hole group are respectively arranged in one-to-one correspondence with the two first supporting holes on the support seat; the arrangement direction of each mounting hole group is consistent with the extension direction of the support groove.

7. The tooth profile precision positioning tool for the rack automated forging production line according to claim 3, characterized in that: The bracket includes a support plate and a reinforcement plate, the extension directions of the support plate and the reinforcement plate are consistent, the reinforcement plate is vertically arranged on the lower surface of the support plate, the upper end of the support plate is vertically fixedly connected to the bottom of the support plate, and the end of the reinforcement plate is vertically fixed to the support plate.

8. The tooth profile precision positioning tool for the rack automated forging production line according to claim 7, characterized in that: The positioning assembly includes a positioning seat, which is configured as a strip extending in a straight line. The extension direction of the positioning seat is consistent with the extension direction of the support plate. The first positioning block, the second positioning block and the third positioning block are all arranged on the positioning seat, and the arrangement direction of the first positioning block, the second positioning block and the third positioning block is consistent with the extension direction of the positioning seat.

9. The tooth profile precision positioning tool for the rack automated forging production line according to claim 8, characterized in that: The upper surface height of the supporting plate is lower than the upper surface height of the mounting plate.

10. The tooth profile precision positioning tool for the rack automated forging production line according to claim 8, characterized in that: Two support blocks are arranged on the positioning seat, and a shaping groove is arranged on the support block. The shaping groove is a circular arc groove, and the circular arc radius of the shaping groove is consistent with the cross-sectional radius of the corresponding rack forging. The first positioning block, the second positioning block and the third positioning block are arranged between the two support blocks.

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