Bidirectional end face cutting machine tool and method based on automobile steering gear rack

Abstract

The invention relates to a bidirectional end face cutting machine tool and method based on an automobile steering gear rack. The technical problems that multiple times of clamping and adjusting are needed in existing two-end-face machining, and adjustment and tool clamp replacement are needed when a machining rack is replaced are solved. Comprising a machine tool body, a mounting seat with an inclined mounting surface is arranged at the upper end of the machine tool body, machining seat bodies are arranged at the two ends of the inclined mounting surface respectively, seat body driving structures are arranged between the mounting seat and the machining seat bodies, a workpiece clamp set is arranged between the two machining seat bodies, and the workpiece clamp set comprises a main clamp assembly and an auxiliary clamp assembly; the main clamp assembly is fixedly connected with the mounting base, the auxiliary clamp assembly is movably connected with the mounting base through the length adjusting driving assembly, and one end of the machining base body is provided with any one or more combinations of a thread assembly, a drilling assembly of a milling cutter assembly and a length positioning assembly. The length adjusting device has the advantages that the auxiliary clamp seat is controlled to move through the length adjusting driving assembly, so that workpieces with various lengths can be covered between the main clamp seat and the auxiliary clamp seat.

Description

Technical Field

[0001] The invention belongs to the technical field of steering gear rack processing equipment, and in particular relates to a bidirectional end face cutting machine tool and method based on a steering gear rack of an automobile. Background Art

[0002] With the continuous development of the automobile industry, higher requirements are placed on the processing accuracy and production efficiency of automobile parts. As a key component of the automobile steering system, the processing accuracy and production efficiency of the automobile steering rack directly affect the steering performance and overall quality of the automobile. In the prior art, conventional machine tools can only process one end face at a time when processing the outer circle, drilling, and threading of the two end faces of shaft parts, and multiple clamping and adjustments are required to complete the processing of two end faces, which takes a long processing time and has low production efficiency. At the same time, conventional machine tools have poor adaptability to steering racks of different specifications. When replacing the processing rack, a large number of adjustments and tooling fixtures need to be replaced, resulting in the inability to cover all the length specifications of a part, making it difficult to meet the needs of mass production. Summary of the invention

[0003] The purpose of the present invention is to provide a bidirectional end face cutting machine tool based on the rack of an automobile steering gear in view of the above problems.

[0004] Another object of the present invention is to provide a bidirectional end face cutting method based on a steering rack of an automobile in order to solve the above-mentioned problem.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a bidirectional end face cutting machine tool based on a car steering machine rack, comprising a machine tool bed, a mounting seat with an inclined mounting surface is provided at the upper end of the machine tool bed, and processing seat bodies are respectively provided at both ends of the inclined mounting surface, and a seat driving structure that can drive the processing seat body to move along the length direction of the mounting seat and along the width direction of the mounting seat is provided between the mounting seat and the processing seat body, and a workpiece clamp group is provided between the two processing seat bodies, and the workpiece clamp group includes a main clamp component and a sub-clamp component, the main clamp component is fixedly connected to the mounting seat, and the sub-clamp component is movably connected to the mounting seat through a length adjustment driving component that can make the sub-clamp component approach or move away from the main clamp component, and the end of the processing seat body close to the workpiece clamp group is provided with any one or more combinations of a threaded component, a drilling component of a milling cutter component, and a length positioning component. Both processing seats have threaded components, milling cutter components and drilling components. In this way, driven by the seat driving structure, both ends of the rack can be processed, reducing replacement time and improving production efficiency. At the same time, the length adjustment drive component is used to control the distance between the main clamp component and the auxiliary clamp component, so that it can be flexibly adjusted according to different rack specifications, thereby improving the guarantee for the efficient operation of the bidirectional end face cutting machine tool.

[0006] In the above-mentioned bidirectional end face cutting machine tool based on the steering gear rack of an automobile, the main fixture assembly has a main fixture seat, a mounting protrusion is provided on the side of the main fixture seat away from the mounting seat, a mounting notch is provided on one side of the mounting protrusion, main synchronous clamps are provided at both ends of the mounting protrusion, fixture mounting grooves corresponding to the two ends of the main fixture seat are provided at both sides of the oblique mounting surface, the auxiliary fixture assembly has an auxiliary fixture seat, and auxiliary synchronous clamps corresponding to the main synchronous clamps are provided at both ends of the side of the auxiliary fixture seat away from the mounting seat. The main synchronous clamp and the auxiliary synchronous clamp are used to fix the two ends of the rack to ensure the stability of the rack.

[0007] In the above-mentioned bidirectional end face cutting machine tool based on the steering gear rack of an automobile, the length adjustment drive assembly includes a plurality of fixture slides arranged at both ends of the auxiliary fixture seat close to the mounting seat, a plurality of X-axis guide rails are respectively arranged on both sides of the inclined mounting surface, the fixture slides are connected to the X-axis guide rails, a reducer support plate is arranged at one end of the auxiliary fixture seat, a fixture drive motor is arranged on the reducer support plate, and a fixture drive rack connected to the fixture drive gear of the fixture drive motor is arranged at one end of the mounting seat close to the reducer support plate and away from the inclined mounting surface. The fixture drive motor and the fixture drive rack cooperate with each other to control the movement of the auxiliary fixture seat, so that the position of the auxiliary fixture seat can be adjusted according to the length of the rack, thereby improving practicality.

[0008] In the above-mentioned bidirectional end face cutting machine tool based on automobile steering gear rack, the two ends of the installation notch are respectively provided with workpiece axial positioning components corresponding to the main synchronous clamp, the workpiece axial positioning component has a fixed seat, one end of the fixed seat is connected to the main clamp seat, and one side of the fixed seat is respectively provided with a positioning seat and a pressure rod seat, a positioning rod with positioning teeth is movably provided on the positioning seat through an elastic movable mounting structure, and a pressure rod body that can swing circumferentially toward the direction of the positioning rod and can be pressed downward toward the direction of the positioning rod is provided on the pressure rod seat through a spinning drive structure, a steering gear rack is provided between the main synchronous clamp and the auxiliary synchronous clamp at the same end, and the teeth of the steering gear rack correspond to the positioning teeth. The pressure rod body is moved to the top of the positioning rod and moves downward through the spinning drive structure, so that the positioning rod and the pressure rod body press the steering machine rack, and the positioning teeth can ensure that the steering machine rack will not move axially, thereby improving the processing stability. The fixed seat is wedge-shaped and one side of the fixed seat has an inclined mounting portion that is inclined. The positioning seat and the pressure rod seat are respectively arranged on the inclined mounting portion, and the inclined mounting portion is provided with a positioning seat mounting hole. One end of the positioning seat can be circumferentially rotatably arranged in the positioning seat mounting hole, and a positioning seat locking structure is provided between the positioning seat and the fixed seat. The positioning seat locking structure includes a plurality of positioning seat locking holes that are radially arranged on one side of the fixed seat and connected to the positioning seat mounting hole. The positioning seat locking hole is provided with a plurality of positioning seat locking bolts that abut against the outer side of the positioning seat. The inclined mounting portion is provided with a scale line located on the circumferential outer side of the positioning seat mounting hole, and a marking line corresponding to the scale line is provided on the outer side of the positioning seat. The reasonable design structure makes the processing process smoother, reduces the actual adjustment and trimming during the processing, and thus improves production efficiency.

[0009] In the above-mentioned bidirectional end face cutting machine tool based on automobile steering gear rack, the elastic movable mounting structure includes a positioning rod movable hole arranged in a fixed seat and coaxially connected with the positioning seat mounting hole, the positioning rod is movably inserted into the positioning seat through an elastic movable mounting assembly, the positioning seat is cylindrical, the upper end of the positioning seat is closed and the lower end is open, the upper end of the positioning rod passes through the upper end of the positioning seat, the lower end of the positioning rod passes through the lower end of the positioning seat and extends into the positioning rod movable hole, the elastic movable mounting assembly includes a limiting portion arranged on the circumferential outer side of the positioning rod and located in the positioning seat, the lower end of the positioning seat is closed by an end cover and the lower end of the positioning rod passes through the end cover, a reset spring is sleeved on the positioning rod, one end of the reset spring acts on the limiting portion and the other end acts on the end cover. When the positioning rod moves downward, the reset spring begins to tighten, and at the same time, the reset spring also applies an upward reaction force to the positioning rod, thereby ensuring the stability of the positioning rod. The aperture size of the positioning seat installation hole is equal to the diameter size of the positioning seat. The upper end of the positioning seat has an upper through hole for the upper end of the positioning rod to pass through, and the upper through hole has a sealing ring that abuts against the outer side of the positioning rod on the circumferential inner side. The end cover has a lower through hole for the lower end of the positioning rod to pass through. The end cover is inserted into the lower end opening of the positioning seat and the outer side of the lower end of the positioning seat has a radially arranged end cover positioning hole, and the end cover positioning hole is provided with an end cover positioning bolt that abuts against the outer side of the end cover. The end cover is fixed by the end cover positioning bolt, so that the end cover is firmly connected to the positioning seat to ensure the normal operation of the reset spring.

[0010] In the above-mentioned bidirectional end face cutting machine tool based on the steering gear rack of an automobile, a strip detection hole connected to the movable hole of the positioning rod is provided on one side of the fixing seat, a sensor fixing seat is provided on one side of the fixing seat through a positioning locking bolt, a sensor fixing hole corresponding to the strip detection hole is provided on the sensor fixing seat, a position sensor inserted in the strip detection hole and corresponding to the outer side of the positioning rod is installed in the sensor fixing hole, the pressure rod seat is fixed on the inclined mounting portion by a plurality of mounting bolts, and the spinning drive structure is a rotating downward pressure cylinder arranged on the pressure rod seat, and one end of the pressure rod body is fixedly arranged on the cylinder rod of the rotating downward pressure cylinder, the upper end of the positioning rod is provided with a dovetail-shaped mounting groove, the lower end of the positioning tooth is arranged in the mounting groove, and the positioning tooth is fixedly connected to the mounting groove by a fixing bolt. The positioning tooth is installed in the mounting groove and fixed by a fixing bolt. This structural design is conducive to the removal and replacement of the positioning tooth, and improves practicality.

[0011] In the above-mentioned bidirectional end face cutting machine tool based on automobile steering machine rack, the seat body driving structure includes a seat body driving groove axially arranged in the mounting seat, and X-axis screw drive assemblies are respectively provided at both ends of the seat body driving groove, and X-axis slides connected to the X-axis screw drive assemblies are respectively provided at both ends of the mounting seat, and a plurality of X-axis sliders connected to the X-axis guide rails are respectively provided at both ends of the X-axis slide close to the mounting seat, and a Y-axis slide is provided on the side of the X-axis slide away from the mounting seat, and a Y-axis screw drive assembly connected to the Y-axis slide is provided in the X-axis slide, and Y-axis guide rails are respectively provided on both sides of the Y-axis screw drive assembly, and a plurality of Y-axis sliders connected to the Y-axis guide rails are respectively provided on the side of the Y-axis slide close to the X-axis slide, and the processing seat body is arranged on the side of the Y-axis slide away from the X-axis slide.

[0012] A bidirectional end face cutting method based on a steering rack of an automobile, the method comprising the following steps:

[0013] S1. The length positioning component measures the length of the rack blank, and the processing seat body performs rough processing of the end faces at both ends of the rack blank. After the end faces are processed, the center of the two ends of the rack blank is processed with the top hole;

[0014] S2, taking out the rack blank and sending it to a gear processing machine tool to process the gears of the rack blank, thereby obtaining a steering machine rack with gears;

[0015] S3. After the tooth processing is completed, the steering machine rack is placed on the main fixture assembly and the auxiliary fixture assembly. The workpiece axial positioning assembly axially positions the steering machine rack. Through the top hole rough-machined, the threaded assembly, milling cutter assembly and drilling assembly on the processing seat body are used to perform fine milling, drilling and tapping on both end faces of the steering machine rack.

[0016] In the above-mentioned bidirectional end face cutting method based on the automobile steering rack, the length positioning component in step S1 measures the length of the rack blank, and calculates the processing data required for rough processing and fine processing according to the measured length, thereby ensuring the processing accuracy of the steering rack.

[0017] In the above-mentioned bidirectional end face cutting method based on the automobile steering gear rack, after the teeth are machined out of the rack blank in the steps S2-S3, it is directly installed on the main fixture assembly and the auxiliary fixture assembly through the rough-machined top hole, the workpiece axial positioning assembly axially positions the steering gear rack, and then the seat body is machined to perform fine machining on both ends of the steering gear rack.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The device controls the movement of the auxiliary fixture seat through the length adjustment drive assembly, so that the main fixture seat and the auxiliary fixture seat can cover workpieces of various lengths. It has a simple structure, reduces manual intervention, reduces labor intensity, and thus controls machine tool costs.

[0020] 2. The device is equipped with processing seats at both ends, so that flat section and drilling can be carried out simultaneously, which shortens the processing time, improves the processing efficiency, and greatly reduces the cost. In addition, through high-precision synchronous control, the symmetry and consistency of cutting at both ends can be ensured.

[0021] 3. The device fixes the steering machine rack through the positioning seat and the pressure rod seat to ensure that it maintains a fixed position during the processing, avoiding dimensional deviation caused by inaccurate positioning, thereby improving processing accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the present invention from another perspective.

[0024] Figure 3 The present invention Figure 1 A magnified view of the structure at center.

[0025] Figure 4 It is a structural explosion diagram of the positioning seat in the present invention.

[0026] Figure 5 It is a structural schematic diagram of the fixing seat in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the length adjustment drive assembly in the present invention.

[0028] Figure 7 It is a structural explosion diagram of the seat body driving structure in the present invention.

[0029] In the figure: machine tool bed 1, mounting seat 11, oblique mounting surface 12, processing seat body 13, threaded assembly 14, milling cutter assembly 15, drilling assembly 16, fixture mounting groove 17, X-axis guide rail 18, steering rack 19, length positioning assembly 20, seat body drive structure 2, seat body drive groove 21, X-axis screw drive assembly 22, X-axis slide 23, X-axis slider 24, Y-axis slide 25, Y-axis screw drive assembly 26, Y-axis guide rail 27, Y-axis slider 28, workpiece fixture group 3, main fixture assembly 31, auxiliary fixture assembly 32, main fixture seat 33, mounting protrusion 34, mounting notch 35, main synchronous clamp 36, auxiliary fixture seat 37, auxiliary synchronous clamp 38, length adjustment drive assembly 4, fixture slider 41, reducer support plate 42, fixture drive motor Machine 43, fixture drive gear 44, fixture drive rack 45, workpiece axial positioning assembly 5, fixed seat 51, inclined mounting portion 511, positioning seat mounting hole 512, positioning seat 52, upper through hole 521, sealing ring 522, pressure rod seat 53, positioning rod 54, positioning tooth 55, spinning drive structure 56, pressure rod body 57, rotating downward pressure cylinder 58, mounting groove 59, elastic movable mounting structure 6, positioning rod movable hole 61, elastic movable mounting assembly 62, limiting portion 63, end cover 64, reset spring 65, lower through hole 66, end cover positioning hole 67, positioning seat locking structure 7, positioning seat locking hole 71, scale line 72, marking line 73, strip detection hole 8, sensor fixing seat 81, sensor fixing hole 82, position sensor 83. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-7As shown, a bidirectional end face cutting machine tool based on a steering machine rack of an automobile comprises a machine bed 1, a mounting seat 11 with an oblique mounting surface 12 is provided at the upper end of the machine bed 1, processing seat bodies 13 are respectively provided at both ends of the oblique mounting surface 12, a seat driving structure 2 which can drive the processing seat body 13 to move along the length direction of the mounting seat 11 and along the width direction of the mounting seat 11 is provided between the mounting seat 11 and the processing seat body 13, a workpiece clamp group 3 is provided between the two processing seat bodies 13, the workpiece clamp group 3 is divided into a main clamp assembly 31 and a sub-clamp assembly 32, the main clamp assembly 31 is fixedly connected to the mounting seat 11, the sub-clamp assembly 32 is movably connected to the mounting seat 11 by a length adjustment driving assembly 4 which can make the sub-clamp assembly 32 approach or move away from the main clamp assembly 31, and any one or more combinations of a threaded assembly 14, a milling cutter assembly 15, a drilling assembly 16 and a length positioning assembly 20 are provided at one end of the processing seat body 13 close to the workpiece clamp group 3. Both processing seats 13 have a threaded component 14, a milling cutter component 15 and a drilling component 16, so that under the drive of the seat driving structure 2, both ends of the rack can be processed, reducing the replacement time and improving production efficiency. At the same time, the length adjustment drive component 4 is used to control the distance between the main clamp component 31 and the auxiliary clamp component 32, so that it can be flexibly adjusted according to different rack specifications, thereby improving the guarantee for the efficient operation of the bidirectional end face cutting machine tool.

[0032] Combination Figure 1 and Figure 3 As shown, the main clamp assembly 31 has a main clamp seat 33, a mounting protrusion 34 is provided on the side of the main clamp seat 33 away from the mounting seat 11, a mounting notch 35 is provided on one side of the mounting protrusion 34, main synchronous clamps 36 are provided at both ends of the mounting protrusion 34, and clamp mounting grooves 17 corresponding to the two ends of the main clamp seat 33 are provided at both sides of the oblique mounting surface 12, and the auxiliary clamp assembly 32 has an auxiliary clamp seat 37, and auxiliary synchronous clamps 38 corresponding to the main synchronous clamp 36 are provided at both ends of the auxiliary clamp seat 37 away from the mounting seat 11. The main synchronous clamp 36 and the auxiliary synchronous clamp 38 are used to fix the two ends of the rack to ensure the stability of the rack.

[0033] Combination Figure 2 and Figure 6As shown, the length adjustment drive assembly 4 includes a plurality of fixture slides 41 arranged at both ends of the side of the auxiliary fixture seat 37 close to the mounting seat 11, a plurality of X-axis guide rails 18 are respectively arranged on both sides of the oblique mounting surface 12, and the fixture slides 41 are connected to the X-axis guide rails 18, a reducer support plate 42 is arranged at one end of the auxiliary fixture seat 37, a fixture drive motor 43 is arranged on the reducer support plate 42, and a fixture drive rack 45 connected to a fixture drive gear 44 of the fixture drive motor 43 is arranged at one end of the mounting seat 11 close to the reducer support plate 42 and away from the oblique mounting surface 12. The fixture drive motor 43 and the fixture drive rack 45 cooperate with each other to control the movement of the auxiliary fixture seat 37, so that the position of the auxiliary fixture seat 37 can be adjusted according to the length of the rack, thereby improving practicality.

[0034] Combination Figure 3-Figure 5 As shown, both ends of the mounting notch 35 are respectively provided with workpiece axial positioning components 5 corresponding to the main synchronous clamp 36, and the workpiece axial positioning component 5 has a fixed seat 51, one end of the fixed seat 51 is connected to the main clamp seat 33, and one side of the fixed seat 51 is respectively provided with a positioning seat 52 and a pressure rod seat 53, a positioning rod 54 with a positioning tooth 55 is movably provided on the positioning seat 52 through an elastic movable mounting structure 6, and a pressure rod body 57 that can swing circumferentially toward the positioning rod 54 and can be pressed downward toward the positioning rod 54 is provided on the pressure rod seat 53 through a spinning drive structure 56, and a steering machine rack 19 is provided between the main synchronous clamp 36 and the auxiliary synchronous clamp 38 at the same end, and the teeth of the steering machine rack 19 correspond to the positioning teeth 55. The pressure rod body 57 is moved to the top of the positioning rod 54 and moves downward through the spinning driving structure 56, so that the positioning rod 54 and the pressure rod body 57 press the steering rack 19, and the positioning tooth 55 can ensure that the steering rack will not move axially, thereby improving the processing stability. The fixed seat 51 is wedge-shaped and one side of the fixed seat 51 has an inclined mounting portion 511 that is inclined. The positioning seat 52 and the pressure rod seat 53 are respectively arranged on the inclined mounting portion 511. The inclined mounting portion 511 is provided with a positioning seat mounting hole 512. One end of the positioning seat 52 can be circumferentially The locating seat locking structure 7 is rotatably arranged in the locating seat mounting hole 512 and between the locating seat 52 and the fixed seat 51. The locating seat locking structure 7 includes a plurality of locating seat locking holes 71 radially arranged on one side of the fixed seat 51 and connected to the locating seat mounting hole 512. The locating seat locking holes 71 are provided with a plurality of locating seat locking bolts abutting against the outer side of the locating seat 52. The inclined mounting portion 511 is provided with a scale line 72 located on the circumferential outer side of the locating seat mounting hole 512 and a marking line 73 corresponding to the scale line 72 is provided on the outer side of the locating seat 52. The reasonable design structure makes the processing process smoother, reduces the actual adjustment and trimming in the processing process, and thus improves production efficiency.

[0035] Specifically, the elastic movable mounting structure 6 includes a positioning rod movable hole 61 arranged in the fixed seat 51 and coaxially connected with the positioning seat mounting hole 512. The positioning rod 54 is movably inserted into the positioning seat 52 through an elastic movable mounting assembly 62. The positioning seat 52 is cylindrical, the upper end of the positioning seat 52 is closed and the lower end is open, the upper end of the positioning rod 54 passes through the upper end of the positioning seat 52, and the lower end of the positioning rod 54 passes through the lower end of the positioning seat 52 and extends into the positioning rod movable hole 61. The elastic movable mounting assembly 62 includes a limiting portion 63 arranged on the circumferential outer side of the positioning rod 54 and located in the positioning seat 52. The lower end of the positioning seat 52 is closed by an end cover 64 and the lower end of the positioning rod 54 passes through the end cover 64. A reset spring 65 is sleeved on the positioning rod 54, and one end of the reset spring 65 acts on the limiting portion 63 and the other end acts on the end cover 64. When the positioning rod 54 moves downward, the return spring 65 begins to tighten, and the return spring 65 also applies an upward reaction force to the positioning rod 54, thereby ensuring the stability of the positioning rod 54. The aperture size of the positioning seat mounting hole 512 is equal to the diameter size of the positioning seat 52. The upper end of the positioning seat 52 has an upper through hole 521 for the upper end of the positioning rod 54 to pass through. The upper through hole 521 has a sealing ring 522 that abuts against the outer side of the positioning rod 54 in the circumferential inner side. The end cover 64 has a lower through hole 66 for the lower end of the positioning rod 54 to pass through. The end cover 64 is inserted into the lower end opening of the positioning seat 52 and the outer side of the lower end of the positioning seat 52 has a radially arranged end cover positioning hole 67, and the end cover positioning hole 67 is provided with an end cover positioning bolt that abuts against the outer side of the end cover 64. The end cover 64 is fixed by the end cover positioning bolt, so that the end cover 64 is firmly connected to the positioning seat 52, ensuring the normal operation of the return spring 65.

[0036] Among them, a strip detection hole 8 connected to the movable hole 61 of the positioning rod is provided on one side of the fixing seat 51, a sensor fixing seat 81 is provided on one side of the fixing seat 51 through a positioning locking bolt, a sensor fixing hole 82 corresponding to the strip detection hole 8 is provided on the sensor fixing seat 81, a position sensor 83 inserted in the strip detection hole 8 and corresponding to the outer side of the positioning rod 54 is installed in the sensor fixing hole 82, the pressure rod seat 53 is fixed on the inclined mounting portion 511 through a plurality of mounting bolts, and the spinning drive structure 56 is a rotating downward pressing cylinder 58 arranged on the pressure rod seat 53, and one end of the pressure rod body 57 is fixedly arranged on the cylinder rod of the rotating downward pressing cylinder 58, a dovetail-shaped mounting groove 59 is provided at the upper end of the positioning rod 54, and the lower end of the positioning tooth 55 is arranged in the mounting groove 59, and the positioning tooth 55 is fixedly connected to the mounting groove 59 through a fixing bolt. The positioning tooth 55 is installed in the mounting groove 59 and fixed by a fixing bolt. This structural design is conducive to the removal and replacement of the positioning tooth 55, and improves practicality.

[0037] Combination Figure 1 and Figure 7As shown, the seat body driving structure 2 includes a seat body driving groove 21 axially arranged in the mounting seat 11, and X-axis screw drive assemblies 22 are respectively provided at both ends of the seat body driving groove 21, and X-axis slides 23 connected to the X-axis screw drive assembly 22 are respectively provided at both ends of the mounting seat 11, and a plurality of X-axis sliders 24 connected to the X-axis guide rail 18 are respectively provided at both ends of the X-axis slide 23 close to the mounting seat 11, and a Y-axis slide 25 is provided on the side of the X-axis slide 23 away from the mounting seat 11, and a Y-axis slide 25 is provided in the X-axis slide 23 and connected to the Y-axis slide 25, and Y-axis guide rails 27 are respectively provided on both sides of the Y-axis screw drive assembly 26, and a plurality of Y-axis sliders 28 connected to the Y-axis guide rails 27 are respectively provided on the side of the Y-axis slide 25 close to the X-axis slide 23, and the processing seat 13 is arranged on the side of the Y-axis slide 25 away from the X-axis slide 23.

[0038] A bidirectional end face cutting method based on a steering rack of an automobile, the method comprising the following steps:

[0039] S1, the length positioning assembly 20 measures the length of the rack blank, the processing seat body 13 performs rough processing on the end faces of both ends of the rack blank, and after the end faces are processed, the center of both ends of the rack blank is processed with top holes;

[0040] S2, taking out the rack blank and sending it to a gear processing machine tool, and processing the gears of the rack blank to obtain a steering machine rack 19 with gears;

[0041] S3. After the tooth processing is completed, the steering machine rack 19 is placed on the main clamp assembly 31 and the auxiliary clamp assembly 32, and the workpiece axial positioning assembly 5 axially positions the steering machine rack 19. Through the top hole roughly processed, the threaded assembly 14, the milling cutter assembly 15 and the drilling assembly 16 on the processing seat body 13 perform fine milling, drilling and tapping on the two end faces of the steering machine rack 19.

[0042] In step S1 , the length positioning component 20 measures the length of the rack blank, and calculates the processing data required for rough machining and fine machining according to the measured length, thereby ensuring the machining accuracy of the steering machine rack 19 .

[0043] Specifically, after the teeth of the rack blank are processed in steps S2-S3, it is directly installed on the main clamp assembly 31 and the auxiliary clamp assembly 32 through the rough-machined top hole. The workpiece axial positioning assembly 5 axially positions the steering machine rack 19, and then the seat body 13 is processed to perform fine processing on both ends of the steering machine rack 19.

[0044] The principle of this embodiment is:

[0045] The length of the steering rack 19 is measured by the length positioning component 20, and the auxiliary clamp seat 37 is adjusted by the length adjustment drive component 4. Then, the steering rack 19 is placed between the main synchronous clamp 36 and the auxiliary synchronous clamp 38 at the same end of the main clamp seat 33 and the auxiliary clamp seat 37. The teeth of the steering rack 19 are in contact with the positioning teeth 55 of the positioning rod 54. The rotating downward pressing cylinder 58 controls the pressing rod body 57 to rotate and press upwardly toward the steering rack 19, so that the steering rack 19 is fixed to the fixed seat 51. Then, the main synchronous clamp 36 and the auxiliary synchronous clamp 38 clamp the steering rack 19. Then, the processing seat body 13 processes both ends of the steering rack 19 under the control of the seat body driving structure 2.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0047] Although this article makes more use of machine tool bed 1, mounting seat 11, inclined mounting surface 12, processing seat body 13, threaded assembly 14, milling cutter assembly 15, drilling assembly 16, fixture mounting groove 17, X-axis guide rail 18, steering machine rack 19, length positioning assembly 20, seat body drive structure 2, seat body drive groove 21, X-axis screw drive assembly 22, X-axis slide 23, X-axis slider 24, Y-axis slide 25, Y-axis screw drive assembly 26, Y-axis guide rail 27, Y-axis slider 28, workpiece fixture group 3, main fixture assembly 31, auxiliary fixture assembly 32, main fixture seat 33, mounting protrusion 34, mounting notch 35, main synchronous clamp 36, auxiliary fixture seat 37, auxiliary synchronous clamp 38, length adjustment drive assembly 4, fixture slider 41, reducer support plate 42, fixture drive motor 43, fixture The driving gear 44, the fixture driving rack 45, the workpiece axial positioning assembly 5, the fixing seat 51, the inclined mounting portion 511, the positioning seat mounting hole 512, the positioning seat 52, the upper through hole 521, the sealing ring 522, the pressure rod seat 53, the positioning rod 54, the positioning tooth 55, the spinning driving structure 56, the pressure rod body 57, the rotating downward pressing cylinder 58, the mounting groove 59, the elastic movable mounting structure 6, the positioning rod movable hole 61, the elastic movable mounting assembly 62, the limiting portion 63, the end cover 64, the reset spring 65, the lower through hole 66, the end cover positioning hole 67, the positioning seat locking structure 7, the positioning seat locking hole 71, the scale line 72, the marking line 73, the strip detection hole 8, the sensor fixing seat 81, the sensor fixing hole 82, the position sensor 83 and other terms are used, but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A bidirectional end face cutting machine tool based on a steering rack of an automobile, comprising a machine tool bed (1), wherein a mounting seat (11) having an inclined mounting surface (12) is provided at the upper end of the machine tool bed (1), and processing seats (13) are provided at both ends of the inclined mounting surface (12), and a seat driving structure (2) is provided between the mounting seat (11) and the processing seat (13) and can drive the processing seat (13) to move along the length direction of the mounting seat (11) and along the width direction of the mounting seat (11), characterized in that: A workpiece clamp group (3) is provided between the two processing seat bodies (13), and the workpiece clamp group (3) is divided into a main clamp component (31) and a sub-clamp component (32). The main clamp component (31) is fixedly connected to the mounting seat (11), and the sub-clamp component (32) is movably connected to the mounting seat (11) through a length adjustment drive component (4) that can make the sub-clamp component (32) approach or move away from the main clamp component (31). The processing seat body (13) is provided with any one or more combinations of a threaded component (14), a milling cutter component (15), a drilling component (16) and a length positioning component (20) at one end close to the workpiece clamp group (3).

2. The bidirectional end face cutting machine tool based on the steering rack of an automobile according to claim 1 is characterized in that: The main clamp assembly (31) comprises a main clamp seat (33), a mounting protrusion (34) is provided on the side of the main clamp seat (33) away from the mounting seat (11), a mounting notch (35) is provided on one side of the mounting protrusion (34), main synchronous clamps (36) are provided at both ends of the mounting protrusion (34), clamp mounting grooves (17) corresponding to the two ends of the main clamp seat (33) are provided at both sides of the inclined mounting surface (12), the auxiliary clamp assembly (32) comprises an auxiliary clamp seat (37), and auxiliary synchronous clamps (38) corresponding to the main synchronous clamp (36) are provided at both ends of the side of the auxiliary clamp seat (37) away from the mounting seat (11).

3. The bidirectional end face cutting machine tool based on the automobile steering rack according to claim 2 is characterized in that: The length adjustment drive assembly (4) comprises a plurality of clamp slide blocks (41) arranged at both ends of a side of the auxiliary clamp seat (37) close to the mounting seat (11), a plurality of X-axis guide rails (18) are respectively arranged on both sides of the inclined mounting surface (12), the clamp slide blocks (41) are connected to the X-axis guide rails (18), a reducer support plate (42) is arranged at one end of the auxiliary clamp seat (37), a clamp drive motor (43) is arranged on the reducer support plate (42), and a clamp drive rack (45) connected to a clamp drive gear (44) of the clamp drive motor (43) is arranged at one end of the mounting seat (11) close to the reducer support plate (42) and away from the inclined mounting surface (12).

4. A bidirectional end face cutting machine tool based on a steering rack of an automobile according to claim 2 or 3, characterized in that: The two ends of the installation notch (35) are respectively provided with workpiece axial positioning components (5) corresponding to the main synchronous clamp (36), the workpiece axial positioning component (5) has a fixed seat (51), one end of the fixed seat (51) is connected to the main clamp seat (33), one side of the fixed seat (51) is respectively provided with a positioning seat (52) and a pressure rod seat (53), the positioning seat (52) is movably provided with a positioning rod (54) with a positioning tooth (55) through an elastic movable installation structure (6), the pressure rod seat (53) is provided with a pressure rod body (57) that can swing circumferentially toward the positioning rod (54) and can be pressed downward toward the positioning rod (54) through a spinning drive structure (56), a steering gear rack (19) is provided between the main synchronous clamp (36) and the auxiliary synchronous clamp (38) at the same end, and the teeth of the steering gear rack (19) correspond to the positioning teeth (55), the fixed seat (51) is wedge-shaped and the fixed seat (51) is The side of the fixing seat (51) is provided with an inclined mounting portion (511) which is inclined, the positioning seat (52) and the pressure rod seat (53) are respectively arranged on the inclined mounting portion (511), the inclined mounting portion (511) is provided with a positioning seat mounting hole (512), one end of the positioning seat (52) is rotatably arranged in the positioning seat mounting hole (512), and a positioning seat locking structure (7) is provided between the positioning seat (52) and the fixing seat (51), the positioning seat locking structure (7) comprises a plurality of positioning seat locking holes (71) which are radially arranged on one side of the fixing seat (51) and are connected to the positioning seat mounting hole (512), a plurality of positioning seat locking bolts which abut against the outer side of the positioning seat (52) are provided in the positioning seat locking hole (71), the inclined mounting portion (511) is provided with a scale line (72) which is located circumferentially outside the positioning seat mounting hole (512), and a marking line (73) corresponding to the scale line (72) is provided on the outer side of the positioning seat (52).

5. The bidirectional end face cutting machine tool based on the steering rack of an automobile according to claim 4 is characterized in that: The elastic movable mounting structure (6) comprises a positioning rod movable hole (61) arranged in the fixed seat (51) and coaxially connected with the positioning seat mounting hole (512); the positioning rod (54) is movably arranged in the positioning seat (52) through an elastic movable mounting assembly (62); the positioning seat (52) is cylindrical; the upper end of the positioning seat (52) is closed and the lower end is open; the upper end of the positioning rod (54) passes through the upper end of the positioning seat (52); the lower end of the positioning rod (54) passes through the lower end of the positioning seat (52) and extends into the positioning rod movable hole (61); the elastic movable mounting assembly (62) comprises a limiting portion (63) arranged on the circumferential outer side of the positioning rod (54) and located in the positioning seat (52); the lower end of the positioning seat (52) is closed by an end cover (64) and the lower end of the positioning rod (54) passes through the end cover (64); the positioning rod ( A return spring (65) is sleeved on the upper portion (54), one end of the return spring (65) acts on the limiting portion (63) and the other end acts on the end cover (64), the aperture size of the positioning seat mounting hole (512) is equal to the diameter size of the positioning seat (52), the upper end of the positioning seat (52) has an upper through hole (521) for the upper end of the positioning rod (54) to pass through, the circumferential inner side of the upper through hole (521) has a sealing ring (522) abutting against the outer side of the positioning rod (54), the end cover (64) has a lower through hole (66) for the lower end of the positioning rod (54) to pass through, the end cover (64) is inserted into the lower end opening of the positioning seat (52), and the outer side of the lower end of the positioning seat (52) has a radially arranged end cover positioning hole (67), and the end cover positioning hole (67) is provided with an end cover positioning bolt abutting against the outer side of the end cover (64).

6. The bidirectional end face cutting machine tool based on the steering rack of an automobile according to claim 5 is characterized in that: A strip detection hole (8) connected to the positioning rod movable hole (61) is provided on one side of the fixing seat (51); a sensor fixing seat (81) is provided on one side of the fixing seat (51) via a positioning locking bolt; a sensor fixing hole (82) corresponding to the strip detection hole (8) is provided on the sensor fixing seat (81); a position sensor (83) inserted into the strip detection hole (8) and corresponding to the outer side of the positioning rod (54) is installed in the sensor fixing hole (82); the pressure rod seat (53) The spinning drive structure (56) is fixed on the inclined mounting portion (511) by a plurality of mounting bolts and is a rotating downward-pressing cylinder (58) arranged on a pressure rod seat (53), and one end of the pressure rod body (57) is fixedly arranged on the cylinder rod of the rotating downward-pressing cylinder (58), the upper end of the positioning rod (54) is provided with a dovetail-shaped mounting groove (59), the lower end of the positioning tooth (55) is arranged in the mounting groove (59), and the positioning tooth (55) is fixedly connected to the mounting groove (59) by a fixing bolt.

7. The bidirectional end face cutting machine tool based on the automobile steering rack according to claim 3 is characterized in that: The seat body driving structure (2) comprises a seat body driving groove (21) axially arranged in the mounting seat (11), and the two ends of the seat body driving groove (21) are respectively provided with an X-axis screw drive assembly (22), and the two ends of the mounting seat (11) are respectively provided with an X-axis slide table (23) connected to the X-axis screw drive assembly (22), and the two ends of the X-axis slide table (23) close to the mounting seat (11) are respectively provided with a plurality of X-axis sliders (24) connected to the X-axis guide rail (18), and the X-axis slide table (23) is away from the mounting seat (11). A Y-axis slide (25) is provided on one side of the mounting seat (11); a Y-axis screw drive assembly (26) connected to the Y-axis slide (25) is provided inside the X-axis slide (23); Y-axis guide rails (27) are provided on both sides of the Y-axis screw drive assembly (26); a plurality of Y-axis sliders (28) connected to the Y-axis guide rails (27) are provided on the side of the Y-axis slide (25) close to the X-axis slide (23); and the processing seat body (13) is arranged on the side of the Y-axis slide (25) away from the X-axis slide (23).

8. A method for bidirectional end surface cutting based on a steering rack of an automobile, using a bidirectional end surface cutting machine tool based on a steering rack of an automobile as described in any one of 1 to 7 above, characterized in that: The method comprises the following steps: S1, the length positioning component (20) measures the length of the rack blank, the processing seat body (13) performs rough processing on the end faces of both ends of the rack blank, and after the end faces are processed, the center of the two ends of the rack blank is processed with the top hole; S2, taking out the rack blank and sending it to a gear processing machine tool to process the gears of the rack blank, thereby obtaining a steering machine rack (19) having gears; S3. After the tooth processing is completed, the steering rack (19) is placed on the main fixture assembly (31) and the auxiliary fixture assembly (32), and the workpiece axial positioning assembly (5) axially positions the steering rack (19). Through the top hole obtained by rough processing, the thread assembly (14), the milling cutter assembly (15) and the drilling assembly (16) on the processing seat body (13) perform fine milling, drilling and tapping on the two end surfaces of the steering rack (19).

9. The bidirectional end face cutting method based on the steering rack of an automobile according to claim 8, characterized in that: In the step S1, the length positioning component (20) measures the length of the rack blank, and calculates the processing data required for rough processing and fine processing according to the measured length, thereby ensuring the processing accuracy of the steering machine rack (19).

10. A bidirectional end face cutting method based on a steering rack of an automobile according to claim 9, characterized in that: After the teeth of the rack blank are machined in the steps S2-S3, the rack blank is directly mounted on the main fixture assembly (31) and the auxiliary fixture assembly (32) through the roughly machined top hole, and the workpiece axial positioning assembly (5) axially positions the steering machine rack (19), and then the seat body (13) is machined to perform fine machining on both ends of the steering machine rack (19).

Images