A tool holder body machining jig for a vertical grinding machine

Abstract

The utility model discloses a tool rest body machining clamp for vertical grinding machine mainly includes base, positioning mechanism, circumferential stopper and vertical pressure assembly. The base top is equipped with the mounting boss for carrying work piece, positioning mechanism is through at least one positioning element and the benchmark surface of tool rest body spare coincidence realizes the positioning, and the circumferential stopper is through adjustable limit component and positioning element cooperation, and the rotation of work piece around vertical axle is limited, and vertical pressure assembly then compresses work piece from above, and its vertical displacement is limited, the utility model discloses through the structure design of optimization, has realized the quick, accurate and reliable clamping of tool rest body on vertical grinding machine, has effectively guaranteed the machining accuracy and stability.

Description

Technical Field

[0001] This utility model relates to the field of gear processing equipment technology, specifically to a tool holder body processing fixture for a vertical grinding machine. Background Technology

[0002] With the rapid development of the automotive industry, people have increasingly higher demands for vehicle performance and comfort. The precision of gears in the transmission is a key factor in improving these two aspects, thus requiring ever-increasing precision. Currently, ultra-precision gear machining mainly relies on gear grinding machines. The precision of the gear grinding machine directly affects the precision of the machined gears. The tool holder of the gear grinding machine, as a crucial structure, has a significant impact on the overall machining accuracy. However, the current tool holder components are relatively complex and large, and the set of holes in the middle is the most critical part affecting the precision of the gear grinding machine. Using the traditional vertical grinding machine positioning and clamping method is not only time-consuming and labor-intensive, requiring extremely high worker skills, but also results in relatively unstable machining accuracy. To facilitate the machining of these holes on the tool holder component and ensure a high level of precision in every machining operation, this process equipment was designed.

[0003] Based on the shortcomings of the existing technology, the main technical problem to be solved by this utility model is to provide a more universal process equipment that can reduce the burden on workers in positioning and clamping parts and ensure that the machining accuracy of parts is maintained at a high level, thereby improving production efficiency and machining accuracy. Utility Model Content

[0004] Technical objective: To address the shortcomings of existing tool holder body parts machining, this utility model discloses a tool holder body machining fixture for vertical grinding machines.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A tool holder body machining fixture for a vertical grinding machine, comprising: The base has a mounting boss on its top for supporting and positioning the tool holder body parts to be processed; A positioning mechanism, comprising at least one positioning element disposed on the mounting boss for engaging with a reference surface of the tool holder body part; A circumferential limiter includes a limiting component adjustablely mounted on the base, the limiting component being disposed opposite to a positioning element for abutting against the tool holder body part to limit its rotational freedom about a vertical axis. A vertical clamping assembly is used to clamp the tool holder body part from above to limit its vertical displacement.

[0006] Preferably, the positioning element of this utility model includes a positioning block corresponding to the guide rail surface of the tool holder body part, and a fastening assembly for fixing each of the positioning blocks to the mounting boss.

[0007] Preferably, the fastening assembly of this utility model includes a positioning pin inserted inside the positioning block for positioning between the positioning block and the mounting boss, and a fastening screw inserted on the positioning block for locking the positioning block to the mounting boss.

[0008] Preferably, the positioning block of this utility model adopts an L-shaped structure, which forms a horizontal support surface for supporting the tool holder body part and a positioning surface for cooperating with the guide rail surface of the tool holder body part for positioning.

[0009] Preferably, the base of this utility model is provided with a posture fine-tuning device, the top of which can act on the tool holder body part to adjust the positioning angle of the part in the horizontal plane.

[0010] Preferably, the circumferential limiter of this utility model includes a support column fixed to the mounting boss and a limit screw threaded with the support column. By screwing the limit screw, its end abuts against or disengages from the part, and it works with the positioning element to fix the tool holder body part.

[0011] Preferably, the vertical clamping assembly of this utility model includes a pressure plate and a first double-ended stud fixed on the base in a vertical direction. The pressure plate passes through the first double-ended stud, and the pressure plate is clamped and fixed to the tool holder body parts by a hexagonal nut at the upper end of the first double-ended stud connected by threads.

[0012] Preferably, a second double-ended stud is provided below the pressure plate of this utility model on the side opposite to the tool holder body part. The top of the second double-ended stud is threaded with a support nut, which cooperates with the lower surface of the pressure plate for support. The first double-ended stud, the second double-ended stud and the pressure plate 9 together form a lever pressing structure to press and fix the tool holder body part.

[0013] Preferably, the base of this utility model is provided with eye bolts for hoisting the clamp as a whole.

[0014] Beneficial effects: The tool holder body machining fixture for vertical grinding machines disclosed in this utility model has the following beneficial effects: 1. This utility model achieves precise restriction of the main degrees of freedom by cooperating with the guide rail surface of the tool holder body part through a specially designed positioning block, and the positioning is reliable; the mounting boss and base provide a solid support foundation, ensuring the rigidity of the system during the machining process, which is conducive to improving the surface quality and dimensional accuracy of the machined parts.

[0015] 2. The vertical clamping assembly of this utility model adopts the lever principle, which not only provides sufficient and uniform clamping force, but also has self-locking properties, which can effectively prevent loosening caused by vibration during processing and ensure processing safety; the circumferential limiter adopts an adjustable screw structure, which is convenient to adjust and can adapt to certain changes in part size. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a top view of the fixture of this utility model; Figure 2 This is a side view of the fixture of this utility model; Figure 3 This utility model is based on Figure 1 Sectional view of AA; Among them, 1-base, 2-mounting boss, 3-tool holder body parts, 4-positioning block, 5-positioning pin, 6-fastening screw, 7-support column, 8-limiting screw, 9-pressure plate, 10-first double-ended stud, 11-second double-ended stud, 12-support nut, 13-lifting eye screw, 14-screw jack, 15-hexagonal nut. Detailed Implementation

[0018] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0019] like Figures 1-3 The embodiment shown provides a tool holder body machining fixture for a vertical grinding machine, comprising: The base 1 serves as the basic component of the entire fixture. A mounting boss 2 is provided on its top. The mounting boss 2 is precision machined to provide a reference mounting surface for the tool holder body part to be processed, ensuring the initial positioning accuracy of the part assembly. It is used to accurately support and position the tool holder body part 3 to be processed. Holes are made on the base 1 according to the drilling requirements of the tool holder body part 3.

[0020] The positioning mechanism is crucial for ensuring the machining accuracy of the tool holder body part 3. It includes at least one positioning element disposed on the mounting boss 2. In a preferred embodiment of this invention, the positioning element includes a positioning block 4 adapted to the guide rail surface of the tool holder body part 3. Conventionally, there are two guide rail surfaces; in this embodiment, there are two positioning blocks 4. The positioning block 4 is fixed to the mounting boss 2 by a fastening assembly. Specifically, the fastening assembly includes a positioning pin 5 passing through the positioning block 4 and a fastening screw 6 passing through the positioning block 4. The positioning pin 5 is used to achieve precise positioning between the positioning block 4 and the mounting boss 2, preventing movement; the fastening screw 6 is used to firmly lock the positioning block 4 onto the mounting boss 2. To further optimize the positioning effect, the positioning block 4 can adopt an L-shaped structure. Through its two mutually perpendicular planes, a horizontal support surface for supporting the tool holder body part and a positioning surface for close contact and positioning with the guide rail surface of the tool holder body part 3 are naturally formed. This structure is simple, reliable, and has good positioning stability.

[0021] The circumferential limiter is used to restrict the rotational freedom of the tool holder body part 3 about the vertical axis, preventing it from rotating during machining. It includes a limiting assembly adjustablely mounted on the base 1. In one specific embodiment, the circumferential limiter includes a support column 7 fixedly mounted on the mounting boss 2 and a limiting screw 8 threadedly engaged with the support column 7. By tightening the limiting screw 8, its end can be advanced to abut against the tool holder body part 3, or retracted to disengage from the part, thereby cooperating with the positioning element to complete the circumferential fixation of the part. This design allows for fine-tuning of parts of different sizes, offering good adaptability.

[0022] The vertical clamping assembly is used to clamp the tool holder body part 3 from above to limit its displacement in the vertical direction. In one embodiment, the vertical clamping assembly includes a pressure plate 9 and a first double-ended stud 10 fixed vertically to the base 1. The pressure plate 9 passes through the first double-ended stud 10, and by tightening the hexagonal nut threaded to the upper end of the first double-ended stud 10, the pressure plate 9 can be driven to move downward to clamp the tool holder body part 3.

[0023] To enhance the stability and uniformity of the clamping and create a self-locking effect, in an improved embodiment of this invention, a second double-ended stud 11 is provided below the pressure plate 9 and on the side opposite to the tool holder body part 3. A support nut 12 is threadedly connected to the top of the second double-ended stud 11. By adjusting the height of the support nut 12, its upper surface contacts the lower surface of the pressure plate 9, providing support. Figure 2As shown, at this time, the first double-ended stud 10 serves as the fulcrum for applying force, the second double-ended stud 11 serves as the auxiliary support point, and the pressure plate 9 itself acts as a lever, together forming a lever clamping structure. When the nut at the upper end of the first double-ended stud 10 is tightened, the pressure plate 9 will generate a downward force with the support nut 12 of the second double-ended stud 11 as the fulcrum, thereby more effectively clamping the tool holder body part 3. This structure has a large clamping force and good anti-loosening characteristics; for situations where batch processing of tool holder body parts of the same specification is required, and there is no need to adjust the support height, the second double-ended stud 11 and the support nut 12 can be replaced with an integrated support structure.

[0024] To further improve the positioning accuracy of the fixture, especially for machining with special angle requirements, a fine-tuning device can preferably be provided on the base 1. The top of this fine-tuning device can act on the bottom of the tool holder part 3, and adjust the positioning angle of the part in the horizontal plane through a small displacement. Its micro-adjustment function corrects the installation posture of the part, ensuring that the machining accuracy meets the technical requirements. The fine-tuning device is a spiral jack 14.

[0025] To facilitate the installation, handling, and hoisting of the fixture on the machine tool worktable, the base 1 is equipped with eye bolts 13. By using hoisting equipment in conjunction with the eye bolts 13, the fixture can be safely and conveniently hoisted as a whole.

[0026] When using this fixture, the entire fixture is hoisted and placed on the DN-1200 vertical mill worktable using eye bolts 13. The electromagnetic adsorption of the vertical mill worktable is not activated immediately. The runout of the inner hole of the fixture base 1 is measured using a dial indicator. Once the runout meets the processing requirements, the tool holder body part 3 to be processed is placed on the mounting boss 2. The two positioning blocks 4 on both sides are used to accurately position the part. Then, the pressure plate 9 is moved to press the part, and the part is pressed onto the positioning surface of the positioning block 4 simultaneously using limit screws 8 to implement circumferential limiting to prevent rotational displacement of the part during processing. The form and position tolerances of the guide rail surface and side of the part are then measured using a dial indicator. If they exceed the allowable range, the accuracy is corrected by adjusting the limit screws 8 and the spiral jack 14 until the tolerance requirements are met. Finally, the electromagnetic adsorption function of the worktable is activated to fix the base 1, driving the vertical mill worktable to rotate and perform precision machining on the hole system and hole end faces on the tool holder body part 3.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tool holder machining fixture for a vertical grinding machine, characterized in that, include: The base (1) has a mounting boss (2) on its top for supporting and positioning the tool holder body parts to be processed. The positioning mechanism includes at least one positioning element disposed on the mounting boss (2) for engaging with the reference surface of the tool holder body part (3); A circumferential limiter includes a limiting component adjustablely mounted on the base (1), the limiting component being disposed opposite to the positioning element and used to abut against the tool holder body part (3) to limit its rotational freedom about the vertical axis; A vertical clamping assembly is used to clamp the tool holder body part (3) from above to limit its vertical displacement.

2. The tool holder body machining fixture for a vertical grinding machine according to claim 1, characterized in that, The positioning element includes a positioning block (4) corresponding to the guide surface of the tool holder body part (3), and a fastening assembly for fixing each of the positioning blocks (4) to the mounting boss (2).

3. The tool holder body machining fixture for a vertical grinding machine according to claim 2, characterized in that, The fastening assembly includes a positioning pin (5) that passes through the positioning block (4) to position the positioning block (4) between the positioning block (4) and the mounting boss (2), and a fastening screw (6) that passes through the positioning block (4) to lock the positioning block to the mounting boss (2).

4. The tool holder body machining fixture for a vertical grinding machine according to claim 2, characterized in that, The positioning block (4) adopts an L-shaped structure, which forms a horizontal support surface for supporting the tool holder body part (3) and a positioning surface for positioning in conjunction with the guide rail surface of the tool holder body part (3).

5. The tool holder body machining fixture for a vertical grinding machine according to claim 1, characterized in that, The base (1) is provided with a posture fine-tuning device. The top of the posture fine-tuning device can act on the tool holder body part (3) to adjust the positioning angle of the tool holder body part (3) in the horizontal plane.

6. The tool holder body machining fixture for a vertical grinding machine according to claim 1, characterized in that, The circumferential limiter includes a support column (7) fixed on the mounting boss (2) and a limit screw (8) threaded with the support column (7). By screwing the limit screw (8), its end abuts against or disengages from the part, and the tool holder body part (3) is fixed in conjunction with the positioning element.

7. The tool holder body machining fixture for a vertical grinding machine according to claim 1, characterized in that, The vertical clamping assembly includes a pressure plate (9) and a first double-ended stud (10) fixed on the base (1) in the vertical direction. The pressure plate (9) passes through the first double-ended stud (10) and is clamped and fixed to the tool holder body part (3) by a hexagonal nut (15) at the upper end of the first double-ended stud (10) through a threaded connection.

8. The tool holder body machining fixture for a vertical grinding machine according to claim 7, characterized in that, Below the pressure plate (9), on the side opposite to the tool holder body part (3), there is a second double-ended stud (11). The top of the second double-ended stud (11) is threaded with a support nut (12). The support nut (12) cooperates with the lower surface of the pressure plate (9) for support. The first double-ended stud (10), the second double-ended stud (11) and the pressure plate (9) together form a lever pressing structure to press and fix the tool holder body part (3).

9. The tool holder body machining fixture for a vertical grinding machine according to claim 1, characterized in that, The base (1) is provided with eye bolts (13) for hoisting the fixture as a whole.

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