Cylindrical grinding machine heart-shaped clamp

Abstract

The utility model relates to the field of heart-shaped clamps, particularly discloses a heart-shaped clamp of a cylindrical grinding machine, and solves the technical problems that the operation time is longer and the risk that a shaft is crushed by a screw exists in the use process of the conventional heart-shaped clamp. Comprising a sleeve which comprises a vertically-arranged first through hole and a first channel for a machining shaft to penetrate through; the rotating rod is provided with a first clamping end and is detachably connected with the sleeve; the abutting rod penetrates through the first through hole and can slide up and down along the first through hole, and the abutting rod is connected with a spring extending in the extending direction of the abutting rod. The pin hole in the machining shaft can be compressed through the spring under the condition that the pin hole is fixed by the heart-shaped clamp, the acting force of the abutting rod on the machining shaft is reduced, and crushing is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heart clamps, in particular to a heart clamp for a cylindrical grinding machine. BACKGROUND

[0002] Shaft products used by oil pumps have various structures and appearances, and they play a key role in engines, such as power transmission and support of rotating parts. In order to ensure the dimensional accuracy and surface quality of these shaft parts, the outer diameter of some shafts needs to be processed by high-precision methods, such as cylindrical grinding machines. A cylindrical grinding machine is a machine tool specially used for processing the cylindrical outer surface and end face of a workpiece. Its processing principle is to achieve grinding of the workpiece surface through the relative movement between the grinding wheel and the workpiece.

[0003] During the processing of a cylindrical grinding machine, shaft parts are usually fixed on a special clamp called a "heart clamp". The purpose of the design of the heart clamp is to ensure the stability and accuracy of the shaft during processing. Traditionally, the shaft passes through the heart clamp and is fixed by screw locking. Specifically, threaded holes are provided on the heart clamp, and the operator tightens the screws to press the shaft against one side or both sides, thereby firmly fixing the shaft in the heart clamp. Although this fixing method is simple and direct, it takes a long time to clamp, there is a risk of bruising, and each time the shaft is replaced, the screws need to be manually adjusted and tightened, which not only wastes time but also adversely affects production efficiency. If the operation is not proper or the screws are tightened too tightly, the surface of the shaft may be bruised, which will affect the quality of the final product. SUMMARY

[0004] The purpose of the present utility model is to provide a heart clamp for a cylindrical grinding machine, which solves the technical problem of long operation time and the risk of screw bruising the shaft during the use of the current heart clamp.

[0005] The utility model provides a heart clamp for a cylindrical grinding machine, which comprises a sleeve, a rotating rod, and an abutting rod. The sleeve comprises a first through hole arranged vertically and a first channel for processing the shaft to pass through. The rotating rod is provided with a first clamping end and is detachably connected to the sleeve. The abutting rod passes through the first through hole and can slide up and down along the first through hole. The abutting rod is connected with a spring extending along the extension direction of the abutting rod.

[0006] According to one embodiment of the utility model, the spring is sleeved on the outside of the abutting rod, and the abutting rod is provided with an extension part. One end of the spring abuts against the extension part, and the other end abuts against the sleeve.

[0007] According to one embodiment of the utility model, the abutting rod and the sleeve are connected by a bolt.

[0008] According to one embodiment of the utility model, the abutting rod is provided with an antiskid pad layer at one end close to the sleeve central axis.

[0009] According to one embodiment of the utility model, the abutting rod is provided with a buffer layer at one end close to the sleeve central axis.

[0010] According to one embodiment of the utility model, the sleeve is further provided with a clamping assembly capable of extending and retracting along the radial direction of the sleeve.

[0011] According to one embodiment of the utility model, the end of the clamping assembly is provided with an antiskid pad.

[0012] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0013] The outer cylindrical grinding machine chicken heart clamp provided by the utility model has the advantages that the sleeve, the rotating rod capable of detachable connection with the sleeve and the abutting rod capable of sliding up and down through the first through hole are arranged, so that the machining shaft can be pressed by the spring under the condition of being fixed by the chicken heart clamp, the acting force of the abutting rod on the machining shaft is reduced, and the product quality is prevented from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 The structure schematic view of the outer cylindrical grinding machine chicken heart clamp provided by the utility model embodiment 1 is installed on the machine tool.

[0016] Figure 2 The side view of the outer cylindrical grinding machine chicken heart clamp provided by the utility model embodiment 2.

[0017] FIG.

[0018] 100, sleeve;

[0019] 200, rotating rod

[0020] 300, abutting rod; 310, spring;

[0021] 400, clamping plate;

[0022] 500, fixed center;

[0023] 600, machining shaft. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0025] Embodiment 1

[0026] The embodiments of the utility model provide a center clamping device for external grinding machine, which can reduce the damage of the center clamping device to the machining shaft.

[0027] Please refer to Figure 1 The center clamping device for external grinding machine provided by the embodiments of the utility model comprises a sleeve 100, a rotating rod 200 and an abutting rod 300. The sleeve 100 comprises a first through hole and a first channel for the machining shaft 600 to pass through, and is arranged vertically. The sleeve 100 is sleeved on the machining shaft 600. The rotating rod 200 is provided with a first clamping end and is detachably connected with the sleeve 100. The rotating rod 200 is clamped on the rotating connecting rod of the machine tool, so that the rotation of the machine tool can drive the center clamping device to rotate. The abutting rod 300 passes through the first through hole and can slide up and down along the first through hole. The abutting rod 300 is connected with a spring 310 extending along the extension direction of the abutting rod 300, so as to elastically support the machining shaft 600 and increase the fixing effect of the abutting rod 300. In the embodiments, the clamping member comprises two oppositely arranged clamping plates 400, which clamp the rotating connecting rod of the machine tool and strengthen the synchronism of the machine tool and the machining shaft 600 during rotation. In the embodiments, the machine tool is an external grinding machine. In the embodiments, the abutting rod 300 at least partially extends out of the sleeve 100.

[0028] In the embodiment, the spring 310 is sleeved on the abutting rod 300, and the abutting rod 300 is provided with a protruding portion which is a ring arranged on the outer wall of the abutting rod 300, one end of the spring 310 abuts against the protruding portion, and the other end abuts against the sleeve 100, and specifically, the sleeve 100 is provided with a avoiding cavity for accommodating the spring 310, and in the process of the abutting rod 300 reciprocating along the sleeve 100 in the radial direction, the abutting rod 300 drives the spring 310 to elastically stretch and contract, and when the abutting rod 300 abuts against the machining shaft 600, the elastic force of the spring 310 acts on the machining shaft 600.

[0029] In the embodiment, the abutting rod 300 and the sleeve 100 are connected through bolts to ensure the stability in the rotating process.

[0030] In the embodiment, the abutting rod 300 is provided with an anti-skid pad layer at one end close to the central axis of the sleeve 100 to increase the friction force and protect the machining shaft 600 from being damaged.

[0031] In the embodiment, the abutting rod 300 is provided with a buffer layer at one end close to the central axis of the sleeve 100 to protect the machining shaft 600 from being damaged.

[0032] In the embodiment, the sleeve 100 is further provided with a clamping assembly which can stretch and contract in the radial direction of the sleeve 100, the clamping assembly comprises two oppositely arranged clamping plates 400, the two clamping plates 400 are connected to the sleeve 100 through the spring 310 respectively, and the two clamping plates 400 can reciprocate in the radial direction of the sleeve 100 to abut against or be spaced from the machining shaft 600, and in the clamping state of the machining shaft 600, the clamping plates 400 further clamp the machining shaft 600 through the elastic force of the spring 310 to increase the relative stability of the machining shaft 600 and the device.

[0033] In the embodiment, the end of the clamping assembly is provided with an anti-skid pad, and in the embodiment, the two clamping plates 400 are both provided with the anti-skid pad at one side close to the central line of the sleeve 100.

[0034] The use process of the outer circle grinding machine center clamping device in the embodiment 1 will be described in detail as follows:

[0035] In use, the shaft is placed in the ring of the device, the abutting rod 300 is pulled up, the end of the abutting rod 300 is inserted into the hole of the shaft, and the shaft is further clamped through the clamping assembly, and after the shaft is fixed, the device is fixed on the outer circle grinding machine fixed center 500.

[0036] Embodiment 2

[0037] The embodiment of the utility model provides an outer circle grinding machine center clamping device to reduce the damage of the center clamping device to the machining shaft 600.

[0038] Please refer toFigure 2 The difference between the outer cylindrical grinding machine center clamping provided by the embodiment 2 of the utility model and the embodiment 1 is only that, in the embodiment, the two clamping plates 400 are connected through springs 310 to increase the clamping effect and prevent sliding.

[0039] The embodiment of the utility model has at least the following advantages:

[0040] The outer cylindrical grinding machine center clamping provided by the utility model comprises a sleeve, a rotating rod and an abutting rod, the sleeve comprises a first through hole and a first channel, the rotating rod is detachably connected with the sleeve, and the abutting rod can slide up and down through the first through hole, so that the machining shaft can be pressed by the spring under the condition of being fixed by the center clamping, the acting force of the abutting rod on the machining shaft is reduced, and the machining shaft is prevented from being pressed and damaged, meanwhile, the spring can also make the abutting rod automatically adapt to the diameter change of the machining shaft within a certain range, so that the stability and precision of machining are guaranteed.

[0041] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A centerless grinder mandrel characterized by, The utility model relates to a sleeve, a rotating rod and an abutting rod, and belongs to the field of machining tools. The sleeve comprises a first through hole arranged vertically and a first channel for machining shafts to pass through; The rotating rod is provided with a first clamping end and is detachably connected with the sleeve; The abutting rod passes through the first through hole and can slide up and down along the first through hole, and the abutting rod is connected with a spring extending along the extending direction of the abutting rod.

2. The centerless grinder mandrel according to claim 1, wherein, The spring is sleeved outside the abutting rod, and the abutting rod is provided with a protruding part, one end of the spring abuts against the protruding part, and the other end abuts against the sleeve.

3. The centerless grinder mandrel according to claim 1, wherein, The abutting rod and the sleeve are connected through bolts.

4. The centerless grinder mandrel according to any one of claims 1 to 3, characterized in that The abutting rod is provided with an antiskid pad layer at one end close to the central axis of the sleeve.

5. The centerless grinder mandrel according to any one of claims 1 to 3, characterized in that The abutting rod is provided with a buffer layer at one end close to the central axis of the sleeve.

6. The centerless grinder mandrel according to any one of claims 1 to 3, characterized in that The sleeve is further provided with a clamping assembly which can radially expand and contract along the sleeve.

7. The centerless grinder mandrel according to claim 6, wherein, The end of the clamping assembly is provided with an antiskid pad.

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