Gear rolling machine tool setting mechanism for one-time extrusion forming of three-section positions of automobile half shaft and extrusion forming method

Abstract

The invention relates to a gear rolling machine tool setting mechanism for one-time extrusion forming of three-section positions of an automobile half shaft and an extrusion forming method. The gear rolling machine tool solves the technical problem that an existing gear rolling machine tool cannot conduct one-time forming machining of three-section teeth or multiple-section teeth on automobile half-shaft parts. Comprising a sliding table, a first cutter set, a second cutter set and a third cutter set are arranged on the upper side of the sliding table through independently-arranged cutter adjusting structures, the first cutter set is an oil groove cutter, the second cutter set and the third cutter set are spline cutters, and the second cutter set and the third cutter set are symmetrically arranged on the two sides of one end of the sliding table respectively; and the first cutter group is arranged at the other end of the sliding table and is staggered with the second cutter group or the third cutter group. The gear rolling machine has the advantages that the design structure of the three cutter sets can cover any position of a middle tooth, so that machining of automobile half shafts with different lengths is met, one-time extrusion forming of three positions of the automobile half shafts can be met through one gear rolling machine, and the overall machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gear rolling machine equipment, and in particular relates to a gear rolling machine knife adjustment mechanism and an extrusion molding method for one-time extrusion molding of three sections of an automobile half shaft. Background Art

[0002] In the field of automobile manufacturing, the half shaft is a key component, and its quality and performance play a vital role in the overall operation of the automobile. Among them, the press tool component is an important part of the gear rolling machine. Usually, the press tool component of the gear rolling machine can only install one pair of tools, and some can't even adjust the tool height, which affects the efficiency and quality of processing half shaft parts. In addition, when conventional extrusion gear rolling machines process three-stage or multi-stage gears of automobile half shaft parts, only one machine tool can process the two ends of the teeth first, and then change the machine tool to process the other teeth. It needs to be processed in two times, which is time-consuming, labor-intensive and costly. In addition, when changing production, it is necessary to frequently replace and adjust the tools, which not only reduces the versatility of the equipment, but also increases the complexity and time cost of operation.

[0003] In order to solve the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, the Chinese patent document discloses a new type of knife pressing component [201320329739.8], including a high-rigidity base, a pressing plate, a backing plate, an inner moving bevel block, an outer moving bevel block, a left knife pressing seat, a right knife pressing seat, a left baffle plate, a right baffle plate, an inner knife pad block, an outer knife pad block, a left knife pressing block, a right knife pressing block, an inner adjusting screw, an outer adjusting screw, and a copper nut. The backing plate is installed at the rear of the base, the inner moving bevel block and the outer moving bevel block are installed above the base, the left knife press seat and the right knife press seat are installed on the left and right sides of the base respectively, the left baffle plate is installed on the left side of the backing plate and the left knife press seat, the right baffle plate is installed on the right side of the backing plate and the right knife press seat, the inner knife pad block is installed on the upper side of the inner moving bevel block close to the backing plate, the outer knife pad block is installed above the outer moving bevel block and close to the inner tool surface, the left knife press block is installed above the backing plate and the left knife press seat, the right knife press block is installed above the backing plate and the right knife press seat, the copper nuts are installed on the inner and outer moving bevel blocks, and the adjusting screws are respectively installed on the copper nuts of the inner and outer moving bevel blocks.

[0004] The above solution has solved the problem that only one set of tools can be installed and the tool height cannot be adjusted to a certain extent. However, the solution still has many shortcomings. For example, the gear rolling machine cannot perform one-time forming processing of three-stage teeth or multiple-stage teeth on automotive half-axle parts. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-section positions of automobile half-axles.

[0006] Another object of the present invention is to provide a one-time extrusion molding method for three sections of an automobile half-axle in order to solve the above-mentioned problem.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles, including a slide, the upper side of the slide is provided with a first tool group, a second tool group and a third tool group through independently arranged tool adjustment structures, the first tool group is an oil groove tool and the second tool group and the third tool group are both spline tools, the second tool group and the third tool group are symmetrically arranged on both sides of one end of the slide, and the first tool group is arranged at the other end of the slide and is staggered with the second tool group or the third tool group. By using the first tool group, the second tool group and the third tool group and in cooperation with the tool adjustment structure, it can adapt to the processing of half-axles of various specifications, improve the versatility and flexibility of the gear rolling machine, and can realize one-time extrusion molding of three-stage positions of the half-axles, thereby improving the overall processing efficiency.

[0008] In the above-mentioned gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles, a fixed tool seat is provided at one end of the slide, and an adjustment tool seat is provided at the other end. A lower wedge block installed on the side of the slide is provided between the fixed tool seat and the adjustment tool seat. Three upper wedge blocks extending along the axial direction of the lower wedge block are provided on the upper side of the lower wedge block in sequence. The first tool group, the second tool group and the third tool group are respectively provided on the upper side of each upper wedge block, and the above-mentioned tool adjustment structure is provided between each upper wedge block and the adjustment tool seat. The tool is subjected to uniform force during the processing, avoiding excessive local wear caused by tool position deviation, thereby extending the service life of the tool and reducing the processing cost.

[0009] In the above-mentioned gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-section positions of an automobile half-axle, three upper wedge blocks are horizontally distributed in sequence along the width direction of the slide and are arranged parallel to each other, one end of the upper wedge block extends to one side of the fixed tool seat and the other end extends to one side of the adjustment tool seat, and the three upper wedge blocks are respectively the first upper wedge block, the second upper wedge block and the third upper wedge block, a partition portion arranged along the axial direction of the lower wedge block is provided on the upper side of the lower wedge block, the first upper wedge block and the second upper wedge block are located on one side of the partition portion and the third upper wedge block is located on the other side of the partition portion.

[0010] In the above-mentioned gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-section positions of automobile half shafts, the first tool group is installed on the upper side of one end of the first upper wedge block close to the fixed tool seat, the second tool group is installed on the upper side of one end of the second upper wedge block close to the adjustment tool seat and is axially offset with the first tool group, and the third tool group is installed on the upper side of one end of the third upper wedge block close to the adjustment tool seat and is arranged corresponding to the second tool group. With three independent tool systems, each tool is independent of each other and does not interfere with each other, which greatly improves the convenience, usability and versatility of operation.

[0011] In the above-mentioned tooth hobbing machine tool setting mechanism for one-time extrusion forming of three positions of an automotive half shaft, the tool adjusting structure includes a number of adjusting holes arranged horizontally and sequentially on one side of the upper end of the adjusting tool holder. An adjusting sleeve is provided in the adjusting hole, and a gland fixed to the adjusting tool holder is provided on the outer side of the adjusting sleeve. An adjusting bolt threadedly connected to the adjusting sleeve is inserted into the adjusting sleeve, and one end of the adjusting bolt extends to the outside of the adjusting tool holder, and a clamping groove for clamping connection with the bolt head at the other end of the adjusting bolt is provided at one end of the upper wedge block close to the adjusting tool holder. The tool can be flexibly adjusted according to the parameters of different half shafts so that it can adapt to the processing of half shafts of various specifications.

[0012] In the above-mentioned tooth hobbing machine tool setting mechanism for one-time extrusion forming of three positions of an automotive half shaft, at least one scale plate bracket corresponding to the adjusting bolt and located on one side of the adjusting bolt is provided on the outside of the adjusting tool holder, and a fine adjustment scale plate is provided on the scale plate bracket. The tool adjusting structure and the fine adjustment scale plate can shorten the time for replacing the tool and adjusting the equipment, enabling the tooth hobbing machine to operate more efficiently.

[0013] In the above-mentioned tooth hobbing machine tool setting mechanism for one-time extrusion forming of three positions of an automotive half shaft, a number of first adjusting grooves communicated with the adjusting holes one by one are provided on the upper end of the adjusting tool holder and on the side far from the adjusting holes. A number of second adjusting grooves corresponding to the first adjusting grooves are provided on one side of the upper end of the fixed tool holder. Plug-in portions are respectively provided at both ends of the upper wedge block. The plug-in portion at one end of the upper wedge block close to the adjusting tool holder axially moves in the first adjusting groove, and the plug-in portion at one end of the upper wedge block close to the fixed tool holder axially moves in the second adjusting groove.

[0014] In the above-mentioned tooth hobbing machine tool setting mechanism for one-time extrusion forming of three positions of an automotive half shaft, an installation notch is provided at one end of the partition portion close to the first tool group. A radially arranged first intermediate frame is provided at one end of the second tool group far from the adjusting tool holder. A second intermediate frame coaxially arranged with the first intermediate frame is provided at one end of the third tool group far from the adjusting tool holder. One end of the first intermediate frame close to the second intermediate frame and one end of the second intermediate frame close to the first intermediate frame are both located in the installation notch, and a first support block is provided on the lower side of one end of the first intermediate frame far from the second intermediate frame, and a second support block is provided on the lower side of one end of the second intermediate frame far from the first intermediate frame.

[0015] In the above-mentioned gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-section positions of automobile half-axles, the first tool group is arranged between the first intermediate frame or the second intermediate frame and the fixed tool seat, the second tool group is arranged between the first intermediate frame and the adjustment tool seat, and the third tool group is arranged between the second intermediate frame and the adjustment tool seat, and a plurality of tool pressing blocks are provided on the upper end of the adjustment tool seat close to the slide and the upper end of the fixed tool seat close to the slide.

[0016] A one-time extrusion molding method for three sections of an automobile half shaft comprises the following steps:

[0017] S1, first move one end of the automobile half-axle blank to the first tool group, and as the slide moves axially, perform oil groove processing on one end of the automobile half-axle blank, after the oil groove is processed and the automobile half-axle blank moves to the second tool group, the slide continues to move, and the front end spline processing is performed on the end of the automobile half-axle blank that has been processed with the oil groove through the second tool group;

[0018] S2, axially moving the automobile half-axle blank so that the other end of the automobile half-axle blank moves to the third tool group, and as the slide moves axially, the third tool group performs front end spline processing on the end of the automobile half-axle blank.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The design structure of the three tool groups of the device can cover the middle teeth at any position, so as to meet the processing of automobile half-axles of different lengths, improve the applicability, and through a gear rolling machine, the three positions of the automobile half-axle can be extruded and formed at one time, which improves the overall processing efficiency.

[0021] 2. Each tool group of the device has an independent tool installation system, and at the same time, through the tool adjustment structure, each tool group has an independent tool adjustment system, thereby ensuring that each tool group does not interfere with each other. 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 adjusting knife seat in the present invention.

[0024] Figure 3 It is a structural schematic diagram of adjusting the knife holder from another viewing angle in the present invention.

[0025] Figure 4 It is a structural schematic diagram of the fixed knife seat in the present invention.

[0026] Figure 5 It is a structural schematic diagram of the upper wedge block in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the lower wedge block in the present invention.

[0028] Figure 7 It is a structural schematic diagram of the tool adjustment structure in the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the present invention when in use.

[0030] In the figure: slide 1, first tool group 11, second tool group 12, third tool group 13, fixed tool seat 14, adjusting tool seat 15, first adjusting groove 16, second adjusting groove 17, tool pressing block 18, tool adjustment structure 2, adjusting hole 21, adjusting screw sleeve 22, pressure cover 23, adjusting bolt 24, bolt head 25, clamping groove 26, scale plate bracket 27, fine-tuning scale plate 28, lower wedge block 3, partition 31, installation notch 32, upper wedge block 4, first upper wedge block 41, second upper wedge block 42, third upper wedge block 43, plug-in part 44, first intermediate frame 5, second intermediate frame 51, first support block 6, second support block 61, automobile half-axle blank 7. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-8 As shown, a gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles includes a slide 1, and the upper side of the slide 1 is provided with a first tool group 11, a second tool group 12 and a third tool group 13 through an independently arranged tool adjustment structure 2, the first tool group 11 is an oil groove tool, and the second tool group 12 and the third tool group 13 are both spline tools, the second tool group 12 and the third tool group 13 are symmetrically arranged on both sides of one end of the slide 1, and the first tool group 11 is arranged at the other end of the slide 1 and is staggered with the second tool group 12 or the third tool group 13. By using the first tool group 11, the second tool group 12 and the third tool group 13 and cooperating with the tool adjustment structure 2, it can adapt to the processing of half-axles of various specifications, improve the versatility and flexibility of the gear rolling machine, and can realize one-time extrusion molding of three-stage positions of the half-axles, thereby improving the overall processing efficiency.

[0033] like Figure 1As shown, a fixed tool holder 14 is provided at one end of the slide 1, and an adjustable tool holder 15 is provided at the other end. A lower wedge block 3 installed on the upper side of the slide 1 is provided between the fixed tool holder 14 and the adjustable tool holder 15. Three upper wedge blocks 4 extending along the axial direction of the lower wedge block 3 are provided on the upper side of the lower wedge block 3 in sequence. The first tool group 11, the second tool group 12 and the third tool group 13 are provided on the upper side of each upper wedge block 4, and the tool adjustment structure 2 is provided between each upper wedge block 4 and the adjustable tool holder 15. The tool is subjected to uniform force during the processing, and excessive local wear caused by tool position deviation is avoided, thereby extending the service life of the tool and reducing the processing cost.

[0034] Combination Figure 1 and Figure 5 As shown, the three upper wedge blocks 4 are horizontally distributed in sequence along the width direction of the slide 1 and are arranged parallel to each other. One end of the upper wedge block 4 extends to one side of the fixed tool seat 14 and the other end extends to one side of the adjusting tool seat 15. The three upper wedge blocks 4 are respectively the first upper wedge block 41, the second upper wedge block 42 and the third upper wedge block 43. A partition 31 arranged along the axial direction of the lower wedge block 3 is provided on the upper side of the lower wedge block 3. The first upper wedge block 41 and the second upper wedge block 42 are located on one side of the partition 31 and the third upper wedge block 43 is located on the other side of the partition 31.

[0035] The first tool set 11 is mounted on the upper side of one end of the first upper wedge block 41 close to the fixed tool seat 14, the second tool set 12 is mounted on the upper side of one end of the second upper wedge block 42 close to the adjustment tool seat 15 and is axially offset from the first tool set 11, and the third tool set 13 is mounted on the upper side of one end of the third upper wedge block 43 close to the adjustment tool seat 15 and is arranged corresponding to the second tool set 12. With three independent tool systems, each tool is independent of each other and does not interfere with each other, which greatly improves the convenience, usability and versatility of operation.

[0036] Combination Figure 2 , Figure 5 and Figure 7 As shown, the tool adjustment structure 2 includes a plurality of adjustment holes 21 arranged on one side of the upper end of the adjustment tool seat 15 and arranged in sequence in the transverse direction, an adjustment screw sleeve 22 is arranged in the adjustment hole 21, a pressure cover 23 fixed to the adjustment tool seat 15 is arranged on the outer side of the adjustment screw sleeve 22, an adjustment bolt 24 threadedly connected to the adjustment screw sleeve 22 is passed through the adjustment screw sleeve 22, one end of the adjustment bolt 24 extends to the outer side of the adjustment tool seat 15, and the upper wedge block 4 has a clamping groove 26 connected to the bolt head 25 at the other end of the adjustment bolt 24. The tool can be flexibly adjusted according to the parameters of different half shafts, so that it can adapt to the processing of half shafts of various specifications.

[0037] like Figure 2As shown, at least one scale plate bracket 27 is provided on the outer side of the adjustment tool holder 15 and is located on one side of the adjustment bolt 24 and corresponds to the adjustment bolt 24, and a fine-tuning scale plate 28 is provided on the scale plate bracket 27. The tool adjustment structure 2 and the fine-tuning scale plate 28 can shorten the time for replacing tools and adjusting equipment, so that the gear rolling machine can operate more efficiently.

[0038] Combination Figure 3 , Figure 4 and Figure 5 As shown, a plurality of first adjustment grooves 16 connected one by one with the adjustment holes 21 are provided on the upper end of the adjusting tool seat 15 and away from the adjustment hole 21, a plurality of second adjustment grooves 17 corresponding to the first adjustment grooves 16 are provided on the upper end of the fixed tool seat 14, and plug-in portions 44 are respectively provided at both ends of the upper wedge block 4. The plug-in portion 44 at one end of the upper wedge block 4 close to the adjusting tool seat 15 moves axially in the first adjustment groove 16, and the plug-in portion 44 at one end of the upper wedge block 4 close to the fixed tool seat 14 moves axially in the second adjustment groove 17.

[0039] Combination Figure 1 and Figure 6 As shown, the partition portion 31 is provided with a mounting notch 32 at one end close to the first tool group 11, the second tool group 12 is provided with a radially arranged first intermediate frame 5 at one end away from the adjusting tool seat 15, the third tool group 13 is provided with a second intermediate frame 51 coaxially arranged with the first intermediate frame 5 at one end away from the adjusting tool seat 15, the first intermediate frame 5 is provided with an end close to the second intermediate frame 51 and the second intermediate frame 51 is provided with an end close to the first intermediate frame 5 both located in the mounting notch 32, and a first support block 6 is provided at the lower side of one end of the first intermediate frame 5 away from the second intermediate frame 51, and a second support block 61 is provided at the lower side of one end of the second intermediate frame 51 away from the first intermediate frame 5.

[0040] Among them, the first tool group 11 is arranged between the first intermediate frame 5 or the second intermediate frame 51 and the fixed tool seat 14, the second tool group 12 is arranged between the first intermediate frame 5 and the adjustment tool seat 15, and the third tool group 13 is arranged between the second intermediate frame 51 and the adjustment tool seat 15, and a plurality of tool pressing blocks 18 are provided at the upper end of the adjustment tool seat 15 close to the slide 1 and the upper end of the fixed tool seat 14 close to the slide 1.

[0041] like Figure 8 As shown, a one-time extrusion molding method for three sections of an automobile half shaft comprises the following steps:

[0042] S1, first move one end of the automobile half-shaft blank 7 to the first tool group 11, and as the slide 1 moves axially, perform oil groove processing on one end of the automobile half-shaft blank 7, and after the oil groove is processed and the automobile half-shaft blank 7 moves to the second tool group 12, the slide 1 continues to move, and the front end spline processing is performed on the end of the automobile half-shaft blank 7 that has been processed with the oil groove through the second tool group 12;

[0043] S2, axially move the automobile half-shaft blank 7 so that the other end of the automobile half-shaft blank 7 moves to the third tool group 13, and as the slide 1 moves axially, the third tool group 13 performs front end spline processing on the end of the automobile half-shaft blank 7.

[0044] The principle of this embodiment is:

[0045] The first tool group 11, the second tool group 12 and the third tool group 13 are accurately adjusted to the appropriate position and angle through the tool adjustment structure 2, so that the gear rolling machine can accurately extrude the tooth shape required by the composite design when processing the automobile half-axle blank 7. The tool adjustment structure 2 and the fine-tuning scale plate 28 cooperate with each other to achieve fast and accurate tool adjustment, thereby improving the overall processing efficiency. The slide 1 performs axial reciprocating movement. The slide 1 first moves in the positive direction. The automobile half-axle blank 7 passes through the first tool group 11 and extrude the oil groove on the outside. The slide 1 continues to move in the positive direction. The automobile half-axle blank 7 remains stable and passes through the second tool group 12. A spline is extruded at the end close to the oil groove. Then the automobile half-axle blank 7 moves axially so that the unprocessed end corresponds to the third tool group 13. Then the slide 1 moves in the opposite direction. The unprocessed end of the automobile half-axle blank 7 extrudes a spline, thereby realizing one-time extrusion molding of three positions.

[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 the present invention uses more terms such as slide 1, first tool group 11, second tool group 12, third tool group 13, fixed tool seat 14, adjusting tool seat 15, first adjusting groove 16, second adjusting groove 17, tool pressing block 18, tool adjusting structure 2, adjusting hole 21, adjusting screw sleeve 22, pressure cover 23, adjusting bolt 24, bolt head 25, clamping groove 26, scale plate bracket 27, fine-tuning scale plate 28, lower wedge 3, partition 31, installation notch 32, upper wedge 4, first upper wedge 41, second upper wedge 42, third upper wedge 43, plug-in part 44, first intermediate frame 5, second intermediate frame 51, first support block 6, second support block 61, automobile half shaft blank 7, etc., the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of an automobile half shaft, comprising a slide table (1), characterized in that: The upper side of the slide (1) is provided with a first tool group (11), a second tool group (12) and a third tool group (13) through an independently arranged tool adjustment structure (2); the first tool group (11) is an oil groove tool and the second tool group (12) and the third tool group (13) are both spline tools; the second tool group (12) and the third tool group (13) are symmetrically arranged on both sides of one end of the slide (1); the first tool group (11) is arranged at the other end of the slide (1) and is staggered with the second tool group (12) or the third tool group (13).

2. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles according to claim 1 is characterized in that: The slide (1) is provided with a fixed tool seat (14) at one end and an adjustable tool seat (15) at the other end; a lower wedge block (3) installed on the upper side of the slide (1) is provided between the fixed tool seat (14) and the adjustable tool seat (15); three upper wedge blocks (4) extending along the axial direction of the lower wedge block (3) are provided in sequence on the upper side of the lower wedge block (3); the first tool group (11), the second tool group (12) and the third tool group (13) are respectively provided on the upper side of each upper wedge block (4); and the above-mentioned tool adjustment structure (2) is respectively provided between each upper wedge block (4) and the adjustable tool seat (15).

3. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles according to claim 2 is characterized in that: The three upper wedge blocks (4) are horizontally distributed in sequence along the width direction of the slide (1) and are arranged parallel to each other. One end of the upper wedge block (4) extends to one side of the fixed knife seat (14) and the other end extends to one side of the adjustment knife seat (15). The three upper wedge blocks (4) are respectively a first upper wedge block (41), a second upper wedge block (42) and a third upper wedge block (43). The upper side of the lower wedge block (3) is provided with a partition (31) arranged along the axial direction of the lower wedge block (3). The first upper wedge block (41) and the second upper wedge block (42) are located on one side of the partition (31) and the third upper wedge block (43) is located on the other side of the partition (31).

4. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half-axles according to claim 3 is characterized in that: The first tool group (11) is mounted on the upper side of one end of the first upper wedge block (41) close to the fixed tool seat (14), the second tool group (12) is mounted on the upper side of one end of the second upper wedge block (42) close to the adjustable tool seat (15) and is axially offset from the first tool group (11), and the third tool group (13) is mounted on the upper side of one end of the third upper wedge block (43) close to the adjustable tool seat (15) and is arranged corresponding to the second tool group (12).

5. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half shafts according to claim 2, 3 or 4, characterized in that: The tool adjustment structure (2) comprises a plurality of adjustment holes (21) arranged on one side of the upper end of the adjustment tool seat (15) and arranged in sequence in the transverse direction, an adjustment screw sleeve (22) is arranged in the adjustment hole (21), a pressure cover (23) fixed to the adjustment tool seat (15) is arranged on the outer side of the adjustment screw sleeve (22), an adjustment bolt (24) threadedly connected to the adjustment screw sleeve (22) is passed through the adjustment screw sleeve (22), one end of the adjustment bolt (24) extends to the outer side of the adjustment tool seat (15), and the upper wedge block (4) has a clamping groove (26) at one end close to the adjustment tool seat (15) and is clamped and connected to the bolt head (25) at the other end of the adjustment bolt (24).

6. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half shafts according to claim 5 is characterized in that: At least one scale plate bracket (27) is disposed on the outside of the adjusting knife seat (15) and is located on one side of the adjusting bolt (24) and corresponds to the adjusting bolt (24). A fine-tuning scale plate (28) is disposed on the scale plate bracket (27).

7. The gear rolling machine tool adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half shafts according to claim 5 is characterized in that: A plurality of first adjustment grooves (16) connected one to one with the adjustment holes (21) are provided on the upper end of the adjustment knife seat (15) and away from the adjustment hole (21); a plurality of second adjustment grooves (17) corresponding to the first adjustment grooves (16) are provided on the upper end of the fixed knife seat (14); plug-in portions (44) are respectively provided at both ends of the upper wedge block (4); the plug-in portion (44) of the upper wedge block (4) close to the adjustment knife seat (15) moves axially in the first adjustment groove (16); and the plug-in portion (44) of the upper wedge block (4) close to the fixed knife seat (14) moves axially in the second adjustment groove (17).

8. The gear rolling machine blade adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half shafts according to claim 3 is characterized in that: The partition (31) is provided with a mounting notch (32) at one end close to the first tool group (11), the second tool group (12) is provided with a radially arranged first intermediate frame (5) at one end away from the adjusting tool seat (15), the third tool group (13) is provided with a second intermediate frame (51) coaxially arranged with the first intermediate frame (5) at one end away from the adjusting tool seat (15), the first intermediate frame (5) is provided with an end close to the second intermediate frame (51) and an end close to the first intermediate frame (5) are both located in the mounting notch (32), and the first intermediate frame (5) is provided with a first support block (6) at the lower side of one end away from the second intermediate frame (51), and the second intermediate frame (51) is provided with a second support block (61) at the lower side of one end away from the first intermediate frame (5).

9. The gear rolling machine blade adjustment mechanism for one-time extrusion molding of three-stage positions of automobile half shafts according to claim 8 is characterized in that: The first tool group (11) is arranged between the first intermediate frame (5) or the second intermediate frame (51) and the fixed tool seat (14), the second tool group (12) is arranged between the first intermediate frame (5) and the adjusting tool seat (15), and the third tool group (13) is arranged between the second intermediate frame (51) and the adjusting tool seat (15), and a plurality of tool pressing blocks (18) are provided at the upper end of the adjusting tool seat (15) on the side close to the slide (1) and at the upper end of the fixed tool seat (14) on the side close to the slide (1).

10. A method for extruding three sections of an automobile half shaft at one time by using a gear rolling machine tool adjustment mechanism for extruding three sections of an automobile half shaft at one time as described in any one of 1 to 9 above, characterized in that: The method comprises the following steps: S1, first move one end of the automobile half-axle blank (7) to the first tool group (11), and as the slide (1) moves axially, perform oil groove processing on one end of the automobile half-axle blank (7); after the oil groove is processed and the automobile half-axle blank (7) moves to the second tool group (12), the slide (1) continues to move, and the front end spline processing is performed on the end of the automobile half-axle blank (7) on which the oil groove has been processed by the second tool group (12); S2, axially moving the automobile half-axle blank (7) so that the other end of the automobile half-axle blank (7) moves to the third tool group (13), and as the slide (1) moves axially, the third tool group (13) performs front end spline processing on the end of the automobile half-axle blank (7).

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