Mother-son claw clamping tool for machining cylinder barrel of coal machine oil cylinder

Abstract

A primary and secondary claw clamping tool for machining a cylinder barrel of a coal machine oil cylinder comprises a plurality of primary claws which are arrayed circumferentially and connected with a chuck in a matched mode, the outer side of the top of each primary claw is detachably connected with a secondary claw used for tightly supporting the inner circle of the cylinder barrel, and the outer side face of each secondary claw is an arc face matched with the inner circle of the cylinder barrel. For machining cylinder barrels with different cylinder diameters, only the secondary claws with different thicknesses need to be replaced, the primary claw does not need to be disassembled and assembled, time and labor are saved, and cost is low; and moreover, appropriate sub-claws made of different materials can be selected according to the material of the cladding layer of the cylinder barrel, so that the cylinder barrel is prevented from being damaged by supporting, and the quality of the cylinder barrel is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal machine oil cylinder processing equipment technical field, and specifically speaking, relate to a kind of coal machine oil cylinder cylinder barrel processing daughter-in-law claw clamping tool. BACKGROUND

[0002] Coal machine oil cylinder includes cylinder barrel, disc sleeve and piston rod three big pieces, wherein cylinder barrel processing inner and outer circle needs to use clamping jaw to be fixedly clamped.In actual replacement production on site, the original clamping jaw on chuck needs to be replaced, to meet the clamping cylinder barrel of different sizes.This way needs to remove all bolts on the original clamping jaw, remove the original clamping jaw, replace new clamping jaw matched with cylinder diameter, and fix new clamping jaw by reassembling bolt, the whole process is time-consuming and laborious, and high in cost.Moreover, cylinder barrel is prone to be damaged due to the existence of cladding layer when clamped by traditional clamping jaw, which affects the quality of cylinder barrel.

[0003] Chinese utility model patent CN2023222447939 specifically discloses a kind of coal machine oil cylinder cylinder barrel processing fixture, including main support frame, upper support fixedly installed in the top of main support frame, the inner side slope of main support frame is fixedly installed with movable head, the top of movable head is movably connected with buffer plate, the bottom of the back of buffer plate is fixedly installed with spring.It uses buffer plate to support and limit the bottom of cylinder barrel, all weight is on main support frame, while the hydraulic component on upper support is slidably connected with top plate, so that the extension of hydraulic component can control the rotation or sliding of top plate, so as to adjust the position of counterweight head to the top of cylinder barrel, the force exerted by hydraulic component can make counterweight head exert a continuous downward force on cylinder barrel, complete clamping, avoid jumping, effectively improve the practicability of device, without using clamping jaw to fix and clamp cylinder barrel, so that cylinder barrel will not be deformed due to different force exerted by clamping jaw.This fixture is not suitable for traditional lathe, cylinder barrel is clamped and fixed during work, cannot rotate, so it is not convenient to process inner circle and outer circle of cylinder barrel. SUMMARY

[0004] The utility model aims at the shortage of prior art, to provide a kind of coal machine oil cylinder cylinder barrel processing daughter-in-law claw clamping tool, the utility model is processed to different cylinder diameter's cylinder barrel, only needs to replace the daughter-in-law of different thickness, without disassembling and assembling mother claw, save time and effort, low in cost;Moreover, can select the daughter-in-law of different material according to the material quality of the cladding layer of cylinder barrel, avoid damaging cylinder barrel, guarantee cylinder barrel quality.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of coal machine oil cylinder cylinder barrel processing daughter-in-law claw clamping tool, including several circumferential arrays and the cooperation connection of chuck's mother claw, the top outer side of each mother claw is detachably connected with the daughter-in-law for straining cylinder inner circle, the outer side surface of each daughter-in-law is the circular arc surface matched with the inner circle of cylinder barrel.

[0006] Based on the above, the top outer side of the female jaw is vertically provided with a U-shaped clamping groove which is open on the upper side and the outer side, and the inner side of the male jaw is integrally formed with a protrusion which is matched with the U-shaped clamping groove.

[0007] Based on the above, the male jaw is fixedly connected with the female jaw through the counterbore bolt.

[0008] Based on the above, a threaded blind hole is formed on the inner side of the U-shaped clamping groove, a counterbore is formed on the male jaw and penetrates the male jaw, the counterbore is correspondingly matched with the threaded blind hole, the counterbore bolt is arranged in the counterbore, the inner end of the counterbore bolt is threadedly connected in the threaded blind hole, and the cap of the counterbore bolt tightly presses and fixes the male jaw in the counterbore.

[0009] Based on the above, the male jaw is made of brass, carbon steel or bakelite.

[0010] Compared with the prior art, the utility model has substantial features and progress, specifically, the utility model for different cylinder diameter cylinder processing, only need to replace different thickness of male jaw, do not need to disassemble female jaw, save time and effort, low cost. Moreover, can choose appropriate different material male jaw according to the cladding layer material of cylinder, avoid to hurt cylinder, guarantee cylinder quality. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the explosion structure schematic of the utility model Figure One .

[0012] Figure 2 is the explosion structure schematic of the utility model Figure Two .

[0013] In the drawing: 1. female jaw; 2. male jaw; 3. U-shaped clamping groove; 4. protrusion; 5. threaded blind hole; 6. counterbore. DETAILED DESCRIPTION

[0014] The technical scheme of the utility model will be described in further detail below through specific embodiments.

[0015] Figure 1 and Figure 2 Each different thickness of male jaw is shown, and for simplification, only one of the different thickness of male jaw is shown.

[0016] As shown in Figure 1 and Figure 2 , a coal machine oil cylinder cylinder processing male and female jaw clamping tool, including three circumferential arrays and with chuck matched connection female jaw 1, each female jaw 1 top outer side is detachably connected with the male jaw 2 for supporting the cylinder inner circle, the outer side of each male jaw 2 is the circular arc surface matched with the inner circle of the cylinder. The female jaw 1 and the male jaw 2 with different thickness can form different specifications of the clamping jaw to meet the clamping requirements of the cylinder with different cylinder diameter.

[0017] The top outer side of the female claw 1 is vertically provided with a U-shaped clamping groove 3 which is open on the upper side and the outer side, and the inner side of the male claw 2 is integrally formed with a protrusion 4 which is matched with the U-shaped clamping groove 3. The matched clamping of the U-shaped clamping groove 3 and the protrusion 4 can ensure the accurate positioning between the male claw 2 and the female claw 1, and the connection is reliable.

[0018] The male claw 2 is fixedly connected with the female claw 1 through a countersunk bolt. The countersunk bolt can not only connect the male claw 2 and the female claw 1 together, but also ensure the appearance of the male claw 2 is beautiful and complete, avoid the outer side of the male claw 2 from leaking out, and ensure that the outer side of the male claw 2 better contacts the inner circle of the cylinder barrel, so as to better tighten the inner circle of the cylinder barrel and prevent the cylinder barrel from being damaged.

[0019] Specifically, a threaded blind hole 5 is formed on the inner side of the U-shaped clamping groove 3, a counterbore 6 which is through from the inside to the outside and corresponds to the threaded blind hole 5 is formed on the male claw 2, the countersunk bolt is arranged in the counterbore 6, the inner end of the countersunk bolt is threadedly connected in the threaded blind hole 5, and the cap of the countersunk bolt tightly presses and fixes the male claw 2 in the counterbore 6.

[0020] The male claw 2 is made of brass, carbon steel or bakelite. According to the material of the cladding layer of the cylinder barrel, the male claw 2 with a suitable material can be selected to avoid damaging the cylinder barrel and ensure the quality of the cylinder barrel.

[0021] When the embodiment is used, the male claw 2 installed on each female claw 1 is used to tighten the inner circle of the cylinder barrel, and then the cylinder barrel is clamped and fixed. By replacing the male claw 2 with different thickness, the cylinder barrel with different diameters can be clamped without disassembling and replacing the female claw 1, which saves time and effort and has low cost. The male claw 2 can be quickly replaced by only disassembling the countersunk bolt.

[0022] It should be noted finally that: the above embodiments are only used to illustrate the technical solutions of the present application but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed.

Claims

1. A clamping fixture for machining the cylinder barrel of a coal mining machine, characterized in that: The female claws are connected with the chuck in a matching mode, and the top outer side of each female claw is detachably connected with a sub-claw for supporting and tightening the inner circle of the cylinder.

2. The coal machine oil cylinder barrel processing daughter-jaw clamping tooling device according to claim 1, characterized in that: The top outer side of the female claw is vertically provided with a U-shaped clamping groove which is open at the upper side and the outer side.

3. The coal machine oil cylinder barrel processing daughter-mother claw clamping tool according to claim 2, characterized in that: The sub-claw is fixedly connected with the female claw through a countersunk bolt.

4. The coal machine oil cylinder barrel processing daughter-jaw clamping tooling device according to claim 3, characterized in that: The inner side of the U-shaped clamping groove is provided with a threaded blind hole, and the sub-claw is provided with a through hole which is in communication with the inside and the outside and corresponds to the inside and the outside of the corresponding threaded blind hole.

5. The coal machine oil cylinder barrel processing sub-mother claw clamping tool according to any one of claims 1-4, characterized in that: The sub-claw is made of brass, carbon steel or rubber wood.

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