CN203696735U - Sliding block type clamp for grinding large-sized thin-wall space ring type part - Google Patents

Abstract

The utility model discloses a sliding block type clamp for grinding a large-sized thin-wall space ring type part. The sliding block type clamp comprises a clamp body (4), a movable type sliding block (3) and a sunk screw (2), wherein the clamp body is provided with a radial T-shaped through groove distributed in the circumferential direction; the movable type sliding block (3) is mounted in the T-shaped through groove; the movable type sliding blocks have different specifications for selection; the sizes of threaded holes of the movable type sliding blocks with different specifications are different; the sunk screw (2) is matched with the threaded hole of each of the movable type sliding blocks; when the clamp is mounted, the clamp body (4) is directly absorbed by the magnetic force of a circular flat-grinding machine tool working table-board; when clamping is performed by the clamp, the sunk screw (2) is connected with the clamp body (4), the movable type sliding block (3) and a part (1), the compaction of the part is realized through the screwing force of an thread, the upper surface of the clamp body (4) is a positioning surface, and a gap ranging from 0.05-0.1 mm is formed between the upper surface of the movable type sliding block (3) and the lower end face of the part (1). The sliding block type clamp has the following benefits: the structure is simple, the application is convenient and reliable, the applicability is high (one set of clamp can be used for processing various types of parts and is free of the influence of the self-deformation of the parts), the cost is low (the same clamp body is used for clamping different parts), and the efficiency is high (the same clamp can be used for clamping various types of parts, and the time for replacing a tool is saved).

Description

A slider-type fixture for grinding large-scale thin-wall spacer series parts

technical field

This fixture is installed on the circular flat grinding machine and is used for surface grinding of large thin-wall spacer series parts.

Background technique

The end faces of large thin-walled spacer parts are processed by grinding. Due to the large size of the parts (diameter φ800～φ1000mm), small wall thickness (2.375～4.625mm), and high precision (the tolerance of the wall thickness is only ±0.025mm), the assembly of the parts Clamp processing is difficult, deformation is large, and accuracy is not easy to guarantee; parts form series of parts with different diameters and thicknesses, and the single-piece production of fixtures requires a large investment, and the replacement and installation of fixtures takes a long time and is inefficient.

Contents of the invention

The purpose of the present invention is to provide a fixture that utilizes the self-adaptability of the fixture to realize the processing of a series of parts and reduce the clamping deformation of the parts. At the same time, a set of fixtures can realize the processing of various parts and improve the efficiency.

The purpose of the present invention is achieved by the following technical solutions: a slider-type fixture for grinding large-scale thin-wall spacer series parts, including a fixture body 4, a movable slider 3, countersunk screws 2. It is characterized in that: the fixture body has radial T-shaped through grooves distributed in the circumferential direction, and a movable slider 3 is installed in the T-shaped through groove. The movable slider has different specifications for selection, and the movable sliders of different specifications The size of the threaded hole of the sliding block is different, and the countersunk head screw 2 matches the threaded hole of the movable sliding block; when the fixture is installed, the magnetic force on the worktable of the circular flat grinding machine directly attracts the fixture body 4, and when the fixture is clamped, use the countersunk screw 2 Connect the fixture body 4, the movable slider 3 and the part 1, and realize the compression of the parts through the tightening force of the thread. 0.05 ~ 0.1mm gap.

The advantage of the invention is that it has a T-slot fixture body (the number of T-slots is determined by the uniform number of mounting holes in the spacer parts) to cooperate with different movable sliders. The movement of the groove and the use of countersunk screws of different lengths can realize the clamping processing of spacer series parts with different diameters, thicknesses and hole indexing circles when grinding the end faces; there are multiple in the same movable slider. Threaded holes of different specifications (such as M4, M6, M8) can realize the clamping and processing of multiple parts with different mounting hole diameters; the clamping and pressing positions of the parts are evenly distributed at different positions on the circumference, so that the The force and clamping position are scattered and evenly distributed to prevent the clamping deformation of the parts; the large thin-walled spacer parts have different degrees of deformation after the pre-process processing, and the countersunk screws and movable sliders are assembled in the T-shaped slots The fine-tuning of the position can solve the clamping problem of deformed parts; the fixture structure is simple, convenient and reliable to use, and has strong applicability (a set of fixtures can process multiple types of parts, and is not affected by the deformation of the parts themselves), low cost (different The same fixture body is used for parts clamping), and the efficiency is high (the same fixture can clamp multiple parts, saving tooling replacement time).

Description of drawings:

Figure 1 is a schematic diagram of the assembly structure of the slider type fixture;

Fig. 2 is a schematic diagram of parts structure;

Fig. 3 is a structural schematic diagram of a movable slider;

Fig. 4 is a schematic diagram of the structure of the fixture body;

In Figure 1: 1 - Parts 2 - Countersunk head screw 3 - Movable slider 4 - Fixture body

Detailed ways:

In this embodiment, the slider-type fixture used for grinding large-scale thin-wall spacer series parts includes a fixture body 4, a movable slider 3, and a countersunk screw 2. It is characterized in that the fixture body has circumferentially distributed Radial T-shaped through-slot, movable slider 3 is installed in the T-shaped through-slot, the movable slider has different specifications for selection, the size of the threaded hole of the movable slider of different specifications is different, countersunk screw 2 It matches the threaded hole of the movable slider; when the fixture is installed, the magnetic force on the worktable of the circular flat grinding machine directly attracts the fixture body 4, and when the fixture is clamped, connect the fixture body 4, the movable slider 3 and the Part 1, the part is compressed by the tightening force of the thread, the upper surface of the fixture body 4 is the positioning surface, and there is a gap of 0.08mm between the upper surface of the movable slider 3 and the lower end surface of the part 1.

In this embodiment, the process of using the fixture is as follows:

1. Process preparation before parts grinding.

Process the process hole with countersunk chamfer at the position of the mounting hole on the end face of the part. The diameter of the process hole is slightly smaller than the diameter of the installation hole, which matches the standard countersunk head screw; every other hole on both ends of the part is processed with countersunk chamfering, and only one end of the same hole is processed. The process preparation of the parts is shown in Figure 2.

2. Installation and use of fixtures.

The workbench of the round and flat grinding machine is magnetically adsorbed to the bottom of the fixture body; the parts are placed horizontally on the fixture body; standard countersunk screws and movable sliders are selected according to the process hole; the movable slider is installed in the T-shaped slot in the fixture body block; connect the slider and the part with countersunk screws; fine-tune the radial position of the slider to ensure that after the countersunk screw is screwed in, the countersunk screw sinks into the chamfer of the hole of the part and the taper surface of the screw is in line with the chamfer surface of the hole Full contact; tighten the screws in a cross-symmetrical direction. The schematic diagram of the clamping fixture is shown in Figure 1.

3. Grinding of parts

Prepare the process hole according to the process before grinding the part; clamp the part according to the installation and use method of the fixture; grind one end face of the part; remove and turn over the part, and position and clamp the part with the ground surface according to the installation and use method of the fixture; Grind the other end face.

Claims (1)

1. A slider-type fixture for grinding large-scale thin-wall spacer series parts, including a fixture body (4), a movable slider (3), and countersunk screws (2), characterized in that: the fixture The body has radial T-shaped through grooves distributed in the circumferential direction, and a movable slider (3) is installed in the T-shaped through groove. The movable slider has different specifications for selection, and the thread of the movable slider with different specifications The size of the hole is different, the countersunk screw (2) matches the threaded hole of the movable slider; when the fixture is installed, the magnetic force of the worktable of the circular flat grinding machine directly attracts the fixture body (4), and when the fixture is clamped, use the countersunk screw ( 2) Connect the fixture body (4), the movable slider (3) and the part (1), and realize the compression of the part through the tightening force of the thread. The upper surface of the fixture body (4) is a positioning surface, and the movable slider (3) There is a gap of 0.05-0.1mm between the upper surface and the lower end surface of the part (1). the