A machine tool tool rest for turning spherical lenses

Abstract

The utility model discloses a lathe tool rest for turning spherical surface lens belongs to lathe processing technical field. The tool rest includes tool rest body, and the right side of tool rest body is provided with tool rest locking block, and the left side is provided with longitudinal sliding slot, and the sliding slot is connected with sliding block, and the sliding block is provided with the pressure knife block and pressure knife screw of installing tool, and tool rest body still is provided with adjusting screw rod on the sliding block, and the adjusting screw rod is equipped with the upper section thread and lower section thread of same rotation but different pitch, and wherein, the upper section thread is connected with tool rest body, and the lower section thread is connected with sliding block, and the pitch of upper section thread is greater than the pitch of lower section thread. Through the rotation adjusting screw rod, utilize the pitch difference to realize the slight precision displacement of sliding block drive tool, and effectively solve the lens center nodule problem of traditional tool rest height adjustment precision deficiency. The utility model discloses compact structure, and the adjustment precision is high, and the installation is convenient, can satisfy the precision requirement of high coincidence of tool and main shaft center in spherical surface lens turning processing.

Description

Technical Field

[0001] This utility model belongs to the field of lathe machining technology, specifically relating to a machine tool holder for turning spherical lenses. Background Technology

[0002] In scenarios where CNC lathes are used to replace milling equipment or manual grinding for machining spherical lenses, the height accuracy requirements for the turning tool relative to the lathe spindle are extremely high, requiring a spindle center overlap of 0.001mm. If their heights do not align, an unmachined residue will appear at the center of the turned lens, directly affecting subsequent processes and the final performance of the lens. Traditional lathe tool holders, which adjust the tool height by adding or removing shims, are insufficient to meet this precision requirement and are prone to causing a bulge at the lens center. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a machine tool holder for turning spherical lenses, which facilitates precise adjustment of the tool height, improves machining quality, and enhances efficiency in subsequent machining processes.

[0004] The present invention relates to a machine tool holder for turning spherical lenses, comprising a tool holder body, a tool holder locking block provided on the right side of the tool holder body, and a longitudinal sliding groove provided on the left side, a slider connected in the sliding groove, and a tool pressing block and a tool pressing screw provided on the slider for mounting the tool. The tool holder body and the slider are also provided with an adjusting screw, which has an upper thread and a lower thread with the same direction of rotation but different pitches; The upper thread is connected to the tool holder body, and the lower thread is connected to the slider, with the pitch of the upper thread being greater than that of the lower thread.

[0005] The upper thread has a pitch of 1 mm, and the lower thread has a pitch of 0.75 mm.

[0006] The tool holder body is also equipped with fastening screws to press the slider.

[0007] The beneficial effects of this utility model are: Compared with existing technologies, this invention achieves precise micro-adjustment of the turning tool height by employing a single-screw, double-thread differential adjustment structure, easily reaching micron-level adjustment accuracy and effectively ensuring the height alignment between the tool center and the lathe spindle center. This solves the problem of lens center bulges caused by inaccurate tool setting during spherical lens turning, significantly improving machining yield and subsequent process efficiency. Furthermore, the tool holder has a compact overall structure, is easy to install and lock, and is highly practical, adaptable to various CNC lathe models. In addition, this structure has excellent precision expansion capabilities; by changing the adjusting screws with different pitch combinations, it can further meet future higher precision machining needs. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0009] Figure 1 This is a schematic diagram of the overall structure of the tool holder in the embodiment.

[0010] Figure 2 This is a side view of the tool holder in the embodiment.

[0011] Figure 3 This is a schematic diagram of the tool holder body structure in the embodiment.

[0012] Figure 4 This is a schematic diagram of the slider structure in the embodiment.

[0013] In the attached diagram, the structural names represented by each number are as follows: 1-Tool holder body, 101-Slide groove, 2-Tool holder locking block, 3-Slider, 301-Through hole, 302-Connecting block, 4-Adjusting screw, 401-Upper thread, 402-Lower thread, 5-Tool pressing block, 6-Tool pressing screw, 7-Fasting screw. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Example 1 See Figures 1 to 4 As shown, a machine tool holder for turning spherical lenses is provided, including a tool holder body 1, a slider 3, an adjusting screw 4, a tool pressing block 5, and related locking components.

[0016] A tool post locking block 2 is provided on the right side of the tool post body 1. The tool post body 1 is fixed to the CNC lathe by bolts and the tool post locking block 2. A longitudinal slide groove 101 is opened on the left side of the tool post body 1. The slider 3 is assembled in the slide groove 101 and can slide up and down along it.

[0017] Above the slider 3 are a tool clamping block 5 and a tool clamping screw 6, which are used to clamp and fix the turning tool.

[0018] The adjusting screw 4 is vertically set and passes through the tool holder body 1 and the slider 3. The adjusting screw 4 is provided with an upper thread 401 and a lower thread 402 with the same direction of rotation but different pitches. The upper thread 401 is connected to the tool holder body 1, and the lower thread 402 is connected to the connecting block 302 set in the through hole 301 in the middle of the slider 3.

[0019] In this embodiment, the pitch of the upper thread 401 is 1mm, and the pitch of the lower thread 402 is 0.75mm.

[0020] The tool holder body 1 is also equipped with a fastening screw 7, which locks the slider 3 after the height adjustment is completed, thereby improving stability.

[0021] Working principle: Before machining the spherical lens, the tool post is first fixed on the lathe position by the tool post locking block 2, and then the turning tool is placed under the tool pressing block 5 and pressed with the tool pressing screw 6.

[0022] When fine-tuning of the height is required, rotating the adjusting screw 4 will cause the slider 3 and the tool on it to undergo a slight displacement due to the pitch difference between the upper thread 401 and the lower thread 402, according to the differential screw principle, thereby achieving precise adjustment of the tool height.

[0023] After adjusting to the target height, tighten the locking screw 7 to lock the slider 3, and then the turning process can begin. This process can precisely control the center height of the tool and the spindle, effectively avoiding the generation of a convex point at the center of the lens.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. A machine tool holder for turning spherical lenses, characterized in that, Includes a tool holder body (1), a tool holder locking block (2) is provided on the right side of the tool holder body (1), and a longitudinal slide groove (101) is provided on the left side. A slider (3) is connected in the slide groove (101), and a tool pressing block (5) and a tool pressing screw (6) are provided on the slider (3). The tool holder body (1) and the slider (3) are also provided with an adjusting screw (4), and the adjusting screw (4) is provided with an upper section thread (401) and a lower section thread (402) with the same direction of rotation but different pitch. The upper thread (401) is connected to the tool holder body (1), the lower thread (402) is connected to the slider (3), and the pitch of the upper thread (401) is greater than the pitch of the lower thread (402).

2. The machine tool holder for turning spherical lenses according to claim 1, characterized in that: The upper thread (401) has a pitch of 1 mm, and the lower thread (402) has a pitch of 0.75 mm.

3. The machine tool holder for turning spherical lenses according to claim 1, characterized in that: The tool holder body (1) is also provided with fastening screws (7) to press the slider (3).

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