Self-adaptive hanging type positioning device for grinding machining

Abstract

The utility model relates to the technical field of sliding block machining, and particularly discloses a self-adaptive hanging type positioning device for grinding machining, which comprises a first fixed base, a plurality of second fixed bases which are uniformly distributed at equal intervals are arranged on one side of the first fixed base, and a quick clamping pressing plate is arranged above the second fixed bases. A positioning push block assembly installed on the top of the second fixing base is arranged on one side of the quick clamping pressing plate. The positioning push block assembly comprises a movable push block arranged on the top of the second fixed base, a movable taper pin is installed in the movable push block, and one end of the movable taper pin is fixedly connected with an anti-disengaging plate. According to the utility model, a return channel of numerical control milling can be used as a positioning reference for processing, so that various phenomena such as distortion, warping, bending, deformation, dislocation and the like of the outline caused by the influence of process parameters of cold drawing forming and later heat treatment due to the fact that the processing reference of the original sliding block takes the outline of a raw material as the positioning reference are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of slider processing, in particular to an adaptive hanging type positioning device for grinding processing. Background Art

[0002] The ball linear guide pair is generally composed of a guide rail, a slider, a ball, a return device, a cage, a sealing end cover and a baffle, etc., and the ball rolling between the slider and the guide rail replaces the relative contact sliding. When the guide rail and the slider make relative motion, the ball will roll along the raceway on the guide rail that has been hardened by heat treatment and precision grinding. At the end of the slider, the ball enters the return channel through the return device and then enters the raceway, so that the ball rolls repeatedly. The guide rail of the guide pair is installed on the base of the main equipment, and the top surface of the slider of the guide pair is connected to the moving parts of the equipment with threaded holes.

[0003] The top and side surfaces of the slider with raceways and return channels are the installation references of the moving parts of the main equipment. The relative position between this reference and the raceways and return channels greatly affects the guiding accuracy, motion performance and accuracy of the entire guide rail assembly. Its installation top surface, positioning side surfaces and raceways need to undergo multiple precision grinding processes to ensure the precise geometric shape of the raceways and the dimensional accuracy between the raceways and the installation positioning surfaces.

[0004] The return channel of the slider is drilled and milled by CNC machining, the raceway is processed by profiling precision grinding, and the outer datum surface is processed by plane precision grinding. The conversion and definition of the machining datums of the above multiple machining processes have a decisive influence on the final accuracy of the finished product. The machining datums of these sliders are mostly based on the outer contour of the raw material as the positioning datum, and the outer contour is processed by cold drawing (such as Figure 1 ), affected by the process parameters during the cold drawing process and the subsequent heat treatment, the shape contour has various phenomena such as distortion, warping, bending, deformation, and dislocation (such as Figure 2 ), these phenomena directly affect the positioning accuracy and precision of the subsequent processes. Summary of the invention

[0005] The purpose of the utility model is to provide an adaptive hanging grinding positioning device, which can use the return channel of CNC milling as the positioning reference for processing, so as to avoid the original slider processing reference using the outer contour of the raw material as the positioning reference, and the outer contour is affected by the process parameters of the cold drawing process and the subsequent heat treatment, and there are various phenomena such as distortion, warping, bending, deformation, and dislocation, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adaptive hanging type positioning device for grinding processing, comprising a first fixed base, a plurality of second fixed bases evenly distributed at equal distances are arranged on one side of the first fixed base, a quick clamping plate is arranged above the second fixed base, and a positioning push block assembly installed on the top of the second fixed base is arranged on one side of the quick clamping plate;

[0007] The positioning push block assembly includes a movable push block arranged on the top of the second fixed base, and a movable cone pin is installed inside the movable push block, one end of the movable cone pin is fixedly connected to an anti-drop plate, and a cone pin compression spring is arranged between the anti-drop plate and the movable push block;

[0008] A dovetail guide groove is provided inside the second fixed base, and a dovetail guide block matching the size of the dovetail guide groove is provided below the movable push block.

[0009] Preferably, the middle portion of the quick clamping plate is connected to the telescopic end of the clamping cylinder, and the clamping cylinder is fixed to the first fixed base by external bolts.

[0010] Preferably, a sliding block to be ground is arranged between the first fixed base and the second fixed base, and four groups of return channels are opened inside the sliding block to be ground.

[0011] Preferably, a positioning pin for hanging installation is provided on the top of the sliding block to be ground.

[0012] Preferably, four groups of fixed cone pins are provided on a side of the first fixed base close to the sliding block to be ground, and the fixed cone pins pass through one end of the return channel.

[0013] Preferably, the movable cone pin passes through the other end of the return channel, and the movable cone pin is elastically connected to the movable push block through an anti-slip plate and a cone pin compression spring.

[0014] Preferably, the ends of the fixed cone pin and the movable cone pin are both conical structures.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The return channel of the slider to be ground is positioned and installed through the first fixed base and the second fixed base. The return channel of CNC milling can be used as the positioning reference during the grinding process, so as to correct the relative deviation of the four return channels by using the angles of the conical fixed cone pin and the movable cone pin, thereby avoiding the original slider processing reference using the outline of the raw material as the positioning reference, and the appearance of the outline being affected by the process parameters of the cold drawing process and the subsequent heat treatment, causing the appearance of various phenomena such as distortion, warping, bending, deformation, and dislocation;

[0017] 2. Since the slider to be ground can be hoisted by the positioning pin, multiple groups of sliders to be ground can be clamped at the same time under the action of the quick clamping plate and the clamping cylinder to quickly fix the product. The fixture has a simple structure and can achieve quick clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional structural view of the existing slider;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the existing slider when it is deformed;

[0021] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the first fixed base of the utility model;

[0023] Figure 5 This is the overall structural view of the movable push block of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the tapered pin compression spring of the utility model.

[0025] Description of reference numerals:

[0026] 1. First fixed base; 2. Second fixed base; 3. Dovetail guide groove; 4. Quick clamping plate; 5. Positioning push block assembly; 501. Movable push block; 502. Dovetail guide block; 503. Movable taper pin; 504. Anti-slip plate; 505. Taper pin compression spring; 6. Clamping cylinder; 7. Sliding block to be ground; 8. Positioning pin; 9. Return channel; 10. Fixed taper pin. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides a technical solution:

[0029] See also Figures 1 to 6 , an adaptive hanging type positioning device for grinding processing, comprising a first fixed base 1, a plurality of equally spaced and evenly distributed second fixed bases 2 are arranged on one side of the first fixed base 1, a quick clamping plate 4 is arranged above the second fixed base 2, and a positioning push block assembly 5 installed on the top of the second fixed base 2 is arranged on one side of the quick clamping plate 4;

[0030] The positioning push block assembly 5 includes a movable push block 501 arranged on the top of the second fixed base 2, and a movable cone pin 503 is installed inside the movable push block 501, one end of the movable cone pin 503 is fixedly connected to an anti-drop plate 504, and a cone pin compression spring 505 is arranged between the anti-drop plate 504 and the movable push block 501;

[0031] A dovetail guide groove 3 is provided inside the second fixed base 2, and a dovetail guide block 502 matching the size of the dovetail guide groove 3 is provided below the movable push block 501, a slider to be ground 7 is provided between the first fixed base 1 and the second fixed base 2, and four groups of return channels 9 are provided inside the slider to be ground 7, four groups of fixed cone pins 10 are provided on the side of the first fixed base 1 close to the slider to be ground 7, and the fixed cone pins 10 pass through one end of the return channel 9, and a movable cone pin 503 passes through the other end of the return channel 9, and the movable cone pin 503 is elastically connected to the movable push block 501 through an anti-slip plate 504 and a cone pin compression spring 505, and the ends of the fixed cone pin 10 and the movable cone pin 503 are both conical structures.

[0032] By adopting the above technical solution, when the positioning push block assembly 5 moves, the dovetail guide block 502 on the positioning push block assembly 5 can slide inside the dovetail guide groove 3 to guide and limit the movable push block 501, so that the movable cone pin 503 on the movable push block 501 can be inserted into the four groups of return channels 9 of the slider 7 to be ground, and the positioning reference deviation caused by the deformation of the raw material after heat treatment can be effectively avoided. The fixed cone pin 10 can enter the other end of the return channel 9, and the relative positions of the four cone pins can be set according to the theoretical value, and the relative deviation of the four return channels 9 can be corrected by using the angle of the cone pin.

[0033] Specifically, Figure 1 As shown, the middle of the quick clamping plate 4 is connected to the telescopic end of the clamping cylinder 6, and the clamping cylinder 6 is fixed to the first fixed base 1 by external bolts, and the top of the slider 7 to be ground is provided with a positioning pin 8 for hanging installation.

[0034] By adopting the above technical solution, the slider to be ground 7 is suspended in the air by using the positioning pin 8 on the top, and there is a certain distance between the slider to be ground 7 and the first fixed base 1 and the second fixed base 2, so that the bottom surface of the slider to be ground 7 can be exposed. The slider to be ground 7 is placed between the first fixed base 1 and the second fixed base 2, and the quick clamping plate 4 is pushed inward by the clamping cylinder 6 to clamp and install the slider to be ground, so that the movable cone pin 503 and the fixed cone pin 10 are respectively inserted into the two ends of the return channel 9.

[0035] Working principle: The slider to be ground 7 is suspended in the air by the positioning pin 8 on the top. There is a certain distance between the slider to be ground, the first fixed base 1 and the second fixed base 2, so that the bottom surface of the slider to be ground 7 can be exposed. The slider to be ground 7 is placed between the first fixed base 1 and the second fixed base 2, and the clamping cylinder 6 pushes the quick clamping plate 4 to clamp and install the slider to be ground inward. When the quick clamping plate 4 moves, it can push the positioning push block assembly 5 to move, and the dovetail guide block 502 on the positioning push block assembly 5 slides inside the dovetail guide groove 3 to guide and limit the movable push block 501, so that the movable cone pin 503 on the movable push block 501 is inserted into the four groups of return channels 9 of the slider to be ground 7, and the positioning reference deviation caused by the deformation of the raw material after heat treatment is effectively avoided, and the fixed cone pin 10 can enter the other end of the return channel 9, and the relative positions of the four cone pins are set according to the theoretical value, and the relative deviation of the four return channels 9 is corrected by the angle of the cone pin.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An adaptive hanging type positioning device for grinding processing, comprising a first fixed base (1), characterized in that: A plurality of second fixed bases (2) are arranged at equal intervals and evenly distributed on one side of the first fixed base (1), and a quick clamping plate (4) is arranged above the second fixed base (2), and a positioning push block assembly (5) installed on the top of the second fixed base (2) is arranged on one side of the quick clamping plate (4); The positioning push block assembly (5) comprises a movable push block (501) arranged on the top of the second fixed base (2), and a movable cone pin (503) is installed inside the movable push block (501), one end of the movable cone pin (503) is fixedly connected to an anti-slip plate (504), and a cone pin compression spring (505) is arranged between the anti-slip plate (504) and the movable push block (501); A dovetail guide groove (3) is provided inside the second fixed base (2), and a dovetail guide block (502) having a size matching that of the dovetail guide groove (3) is provided below the movable push block (501).

2. The adaptive hanging type grinding positioning device according to claim 1, characterized in that: The middle part of the quick clamping plate (4) is connected to the telescopic end of the clamping cylinder (6), and the clamping cylinder (6) is fixed to the first fixed base (1) by external bolts.

3. The adaptive hanging type grinding positioning device according to claim 1, characterized in that: A sliding block to be ground (7) is arranged between the first fixed base (1) and the second fixed base (2), and four groups of return channels (9) are provided inside the sliding block to be ground (7).

4. The adaptive hanging type grinding positioning device according to claim 3, characterized in that: A positioning pin (8) for hanging installation is provided on the top of the sliding block (7) to be ground.

5. The adaptive hanging type grinding positioning device according to claim 4, characterized in that: Four groups of fixed cone pins (10) are arranged on one side of the first fixed base (1) close to the slider (7) to be ground, and the fixed cone pins (10) pass through one end of the return channel (9).

6. The adaptive hanging type grinding positioning device according to claim 5, characterized in that: The movable cone pin (503) passes through the other end of the return channel (9), and the movable cone pin (503) is elastically connected to the movable push block (501) through an anti-slip plate (504) and a cone pin compression spring (505).

7. The adaptive hanging type grinding positioning device according to claim 6, characterized in that: The ends of the fixed cone pin (10) and the movable cone pin (503) are both conical structures.

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