CN213439094U

CN213439094U - Hydraulic clamp for grinding biplane of step shaft

Info

Publication number: CN213439094U
Application number: CN202022296207.1U
Authority: CN
Inventors: 秦国军; 曾斌; 赵传录
Original assignee: Suzhou Yilaierte Machinery Co ltd
Current assignee: Suzhou Yilaierte Machinery Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-06-15
Anticipated expiration: 2030-10-15

Abstract

The utility model relates to a hydraulically operated fixture for grinding step axle biplane, including the workstation, install the anchor clamps body on the workstation to and fixed block and movable block, the fixed setting of fixed block other at the location reference surface at anchor clamps body top, the movable block degree of freedom that reciprocates along perpendicular to location reference surface direction has, fixed block and movable block on the side processing of relative setting be the inclined plane form for form the positioning gap that can fix the step axle between fixed block and the movable block. Compared with the prior art, the utility model discloses very high positioning accuracy and uniformity can be reached, and the anchor clamps commonality is strong etc.

Description

Hydraulic clamp for grinding biplane of step shaft

Technical Field

The utility model belongs to the technical field of anchor clamps, a hydraulically operated fixture for grinding step axle biplane is related to.

Background

At present, for grinding the biplane of the step shaft, a fourth shaft is mostly arranged on a platform, one shaft is clamped at a time, after a first plane is ground, the second plane is ground after the first plane is rotated by 180 degrees. The method needs to be corrected during clamping, only one clamping piece is needed at a time, the production efficiency is very low, the requirement of mass production cannot be met, in addition, the grinding and flattening precision is closely related to the rotation precision of the four shafts, and the requirement on the rotation precision of the four shafts is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic fixture for grinding step axle biplane to improve positioning accuracy and uniformity.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a hydraulically operated fixture for grind step axle biplane, includes the workstation, installs the anchor clamps body on the workstation to and fixed block and movable block, the fixed setting of fixed block other at the location reference surface at anchor clamps body top, the movable block degree of freedom that reciprocates along perpendicular to location reference surface direction has, fixed block and movable block on the relative side processing that sets up be the inclined plane form for form the positioning gap that can fix the step axle between fixed block and the movable block.

Furthermore, the fixture body is provided with a hollow cavity, a movable through hole which is vertically communicated is further processed at the top of the fixture body, a movable connecting rod is further arranged in the hollow cavity, one end of the movable connecting rod penetrates through the movable through hole and is connected with the movable block, and the other end of the movable connecting rod is connected with a driving piece which is arranged in the hollow cavity and is driven by the driving piece to move up and down.

Further, the driving piece include supporting seat, support arm, a pneumatic cylinder and main hydraulic cylinder, wherein, main hydraulic cylinder on be equipped with adjustable pressurization double-screw bolt, a pneumatic cylinder on be equipped with and order about a hydraulic column that reciprocates by hydraulic oil, main hydraulic cylinder and a pneumatic cylinder between adopt hydraulic pressure oil pipe intercommunication, the middle part of support arm rotate and set up on the supporting seat, the both ends difference swing joint of support arm a hydraulic column and movable connecting rod.

Preferably, the support hydraulic column and the movable connecting rod are respectively provided with a bar-shaped hole along the horizontal direction, two ends of the support arm are respectively and rotatably provided with a connecting pin shaft, and the connecting pin shafts are also arranged in the bar-shaped holes and can move back and forth along the bar-shaped holes.

Preferably, the hydraulic cylinders are provided with one or more hydraulic cylinders, and when the hydraulic cylinders are provided with a plurality of hydraulic cylinders, each hydraulic cylinder corresponds to one support arm, one movable connecting rod and one movable block respectively. More preferably, all the branch hydraulic cylinders share one master hydraulic cylinder.

Preferably, the top end of the pressurizing stud is further provided with a hexagon socket hole, and the pressurizing stud is screwed by a hexagon socket wrench matched with the hexagon socket hole, so that the pressurizing pressure of the pressurizing stud on the hydraulic oil in the main hydraulic cylinder is adjusted.

Furthermore, a reset elastic piece is arranged between the lower end of the movable connecting rod and the bottom of the clamp body.

Preferably, the elastic return element includes a spring guide pillar vertically disposed at the bottom of the clamp body, and a return spring sleeved on the spring guide pillar, the lower end of the movable connecting rod is further processed with a guide cavity into which the upper portion of the spring guide pillar can extend, so that the spring guide pillar and the movable connecting rod can relatively slide along the moving direction of the movable block, and two ends of the return spring are respectively connected to the movable connecting rod and the clamp body.

Furthermore, the fixed blocks are oppositely provided with two spaced blocks at the top of the fixture body, the cross section of the movable block is in an inverted isosceles trapezoid shape and is positioned on the perpendicular bisector of the two fixed blocks, and a positioning gap capable of fixing the step shaft is formed between the movable block and each fixed block.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the processed product has stable quality: the precision of the clamp is ensured by the precision of the clamp, and the manual meter-making and alignment factors are removed, so that the consistency is good, and the quality is stable and reliable.

(2) The positioning precision is high: this anchor clamps press from both sides tight work piece simultaneously through the mode that the movable block pulled down, has clear away the positioning gap problem, and the location benchmark is unified with the design benchmark moreover, so positioning accuracy is very high.

(3) The clamping is simple and reliable: the movable block can be tensioned downwards by screwing the pressurizing stud on the workpiece, and the pressurizing stud can be automatically loosened under the action of the spring by loosening the pressurizing stud, so that the product is convenient to assemble and disassemble, and the operation skill and the meter reading alignment are not needed.

(4) Good economical efficiency: the clamp can be provided with a plurality of hydraulic cylinders, and one main hydraulic cylinder is shared, so that clamping of a plurality of parts can be completed only by screwing once, the clamping efficiency is high, grinding efficiency is greatly improved by 2 times by grinding a plurality of products simultaneously, and economic benefit is remarkable.

(5) The making range is wide: the clamp can be used for processing a single face and two faces simultaneously, can also be used for processing similar products with similar sizes, has stronger universality and is easy to switch the similar products.

Drawings

Fig. 1 is a schematic structural view of the present invention;

the notation in the figure is:

1-a fixture body, 2-a fixed block, 3-a movable block, 4-a return spring, 5-a spring guide post, 6-a support seat, 7-a support arm, 8-a hydraulic prop, 9-a hydraulic cylinder, 10-a hydraulic oil pipe, 11-a main hydraulic cylinder, 12-a pressurizing stud, 13-an inner hexagon wrench, 14-a workpiece, 15-a magnetic workbench and 16-a movable connecting rod.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

In the following embodiments or examples, functional components or structures that are not specifically described are all conventional components or structures that are adopted in the art to achieve the corresponding functions.

The utility model provides a hydraulic fixture for grinding step shaft biplane, its structure is seen in figure 1, including the workstation, install the anchor clamps body 1 on the workstation, and fixed block 2 and movable block 3, fixed block 2 fix set up by the location reference surface at anchor clamps body 1 top, movable block 3 have along perpendicular to the degree of freedom that the location reference surface direction reciprocated, the fixed block 2 and the side processing that sets up relatively on the movable block 3 be the inclined plane form, make to form the location clearance that can fix the step shaft between fixed block 2 and the movable block 3, during operation, work piece 14 is placed in the position of pasting at the inclined plane of fixed block 2, then, movable block 3 is driven to push down, makes work piece 14 tightly between the location clearance between fixed block 2 and movable block 3, simultaneously, because the setting of inclined plane, still can produce a decurrent component to work piece 14, thereby ensuring that the workpiece 14 is tightly attached to the positioning reference surface, and achieving high positioning precision and consistency.

In a specific embodiment, please refer to fig. 1 again, the fixture body 1 has a hollow cavity, a vertically through-going movable through-hole is further processed at the top of the fixture body 1, a movable connecting rod 16 is further disposed in the hollow cavity, one end of the movable connecting rod 16 passes through the movable through-hole and is connected to the movable block 3, and the other end of the movable connecting rod is connected to a driving member disposed in the hollow cavity and is driven by the driving member to move up and down.

In a more specific embodiment, please refer to fig. 1 again, the driving member includes a support base 6, a support arm 7, a support hydraulic cylinder 9 and a main hydraulic cylinder 11, wherein an adjustable pressure stud 12 is disposed on the main hydraulic cylinder 11, a support hydraulic cylinder driven by hydraulic oil to move up and down is disposed on the support hydraulic cylinder 9, the main hydraulic cylinder 11 and the support hydraulic cylinder 9 are communicated by a hydraulic oil pipe 10, the middle portion of the support arm 7 is rotatably disposed on the support base 6, and two ends of the support arm 7 are movably connected to the support hydraulic cylinder and a movable connecting rod 16, respectively. The pressurizing stud 12 in the master cylinder 11 can be screwed to adjust the extension degree thereof, thereby adjusting the pressurizing condition of the hydraulic oil in the cylinder.

In a further specific embodiment, the support hydraulic column and the movable connecting rod 16 are both provided with a bar-shaped hole along the horizontal direction, two ends of the support arm 7 are respectively rotatably provided with a connecting pin shaft, and the connecting pin shafts are further arranged in the bar-shaped holes and can move back and forth along the bar-shaped holes. When the support hydraulic column vertically moves up and down to drive the end part of the support arm 7 to tilt up or descend and further drive the movable connecting rod 16 to lift up and down, the whole process is ensured to be smoothly carried out through the back and forth movement of the connecting pin shaft in the strip-shaped hole.

In a further specific embodiment, one or more hydraulic support cylinders 9 are provided, and when a plurality of hydraulic support cylinders 9 are provided, each hydraulic support cylinder 9 corresponds to one support arm 7, one movable connecting rod 16 and one movable block 3. More preferably, all the branch hydraulic cylinders 9 share one master hydraulic cylinder 11.

In a further specific embodiment, please refer to fig. 1 again, the top end of the pressure stud 12 is further provided with a hexagon socket, and the pressure stud 12 is screwed by a hexagon socket wrench 13 matching with the hexagon socket, so as to adjust the pressure of the pressure stud 12 on the hydraulic oil in the master cylinder 11.

In a more specific embodiment, please refer to fig. 1 again, a return elastic element is further disposed between the lower end of the movable connecting rod 16 and the bottom of the clamp body 1. In a further specific embodiment, the elastic return element includes a spring guide post 5 vertically disposed at the bottom of the clamp body 1, and a return spring 4 sleeved on the spring guide post 5, the lower end of the movable connecting rod 16 is further processed with a guide cavity into which the upper portion of the spring guide post 5 can extend, so that the spring guide post 5 and the movable connecting rod 16 can relatively slide along the moving direction of the movable block 3, and two ends of the return spring 4 are respectively connected to the movable connecting rod 16 and the clamp body 1. When the oil pressure applied by the main hydraulic cylinder 11 is reduced (or recovered to the initial state), the movable block 3 can move to the top dead center under the action of the return spring 4, and the loosening and loading and unloading of the product are realized.

In a specific embodiment, please refer to fig. 1 again, two spaced fixed blocks 2 are oppositely arranged at the top of the fixture body 1, the cross section of the movable block 3 is in an inverted isosceles trapezoid shape and is located on the perpendicular bisector of the two fixed blocks 2, and a positioning gap capable of fixing the step shaft is formed between the movable block 3 and each fixed block 2.

The above embodiments may be implemented individually, or in any combination of two or more.

The above embodiments will be described in more detail with reference to specific examples.

Example 1:

the embodiment provides a hydraulic clamp for grinding a biplane of a step shaft, the structure of which is shown in fig. 1, and the hydraulic clamp comprises a workbench, a clamp body 1 arranged on the workbench, a fixed block 2 and a movable block 3, wherein the fixed block 2 is fixedly arranged beside a positioning reference surface at the top of the clamp body 1, the movable block 3 has a degree of freedom of moving up and down along the direction vertical to the positioning reference surface, the opposite side surfaces of the fixed block 2 and the movable block 3 are processed into an inclined surface shape, so that a positioning gap capable of fixing the step shaft is formed between the fixed block 2 and the movable block 3, when the hydraulic clamp works, a workpiece 14 is placed at the position close to the inclined surface of the fixed block 2, then the movable block 3 is driven to press down, so that the workpiece 14 is clamped between the positioning gap between the fixed block 2 and the movable block 3, meanwhile, due to the arrangement of the inclined surface, a downward component force is generated on the workpiece 14, and further the, thereby achieving high positioning accuracy and consistency.

Referring to fig. 1 again, the fixture body 1 has a hollow cavity, a vertically through-going movable through-hole is further processed at the top of the fixture body 1, a movable connecting rod 16 is further disposed in the hollow cavity, one end of the movable connecting rod 16 passes through the movable through-hole and is connected to the movable block 3, and the other end is connected to a driving member disposed in the hollow cavity and is driven by the driving member to move up and down.

Referring to fig. 1 again, the driving member includes a support base 6, a support arm 7, a hydraulic cylinder 9 and a master cylinder 11, wherein the master cylinder 11 is provided with an adjustable pressure stud 12, the hydraulic cylinder 9 is provided with a hydraulic cylinder driven by hydraulic oil to move up and down, the master cylinder 11 is communicated with the hydraulic cylinder 9 through a hydraulic oil pipe 10, the middle portion of the support arm 7 is rotatably disposed on the support base 6, and two ends of the support arm 7 are respectively movably connected with the hydraulic cylinder and a movable connecting rod 16. The pressurizing stud 12 in the master cylinder 11 can be screwed to adjust the extension degree thereof, thereby adjusting the pressurizing condition of the hydraulic oil in the cylinder. The support hydraulic column and the movable connecting rod 16 are both provided with strip-shaped holes along the horizontal direction, two ends of the support arm 7 are respectively provided with a connecting pin shaft in a rotating mode, and the connecting pin shafts are further arranged in the strip-shaped holes and can move back and forth along the strip-shaped holes. When the support hydraulic column vertically moves up and down to drive the end part of the support arm 7 to tilt up or descend and further drive the movable connecting rod 16 to lift up and down, the whole process is ensured to be smoothly carried out through the back and forth movement of the connecting pin shaft in the strip-shaped hole. One or a plurality of hydraulic cylinders 9 are arranged, and when the hydraulic cylinders 9 are provided with a plurality of hydraulic cylinders, each hydraulic cylinder 9 corresponds to one supporting arm 7, one movable connecting rod 16 and one movable block 3 respectively. More preferably, all the branch hydraulic cylinders 9 share one master hydraulic cylinder 11.

Referring to fig. 1 again, the top end of the pressure stud 12 is further provided with a hexagon socket, and the pressure stud 12 is screwed by a hexagon socket wrench 13 matching with the hexagon socket, so as to adjust the pressure of the pressure stud 12 on the hydraulic oil in the main hydraulic cylinder 11.

Referring to fig. 1 again, a return elastic member is further disposed between the lower end of the movable connecting rod 16 and the bottom of the clamp body 1. In a further specific embodiment, the elastic return element includes a spring guide post 5 vertically disposed at the bottom of the clamp body 1, and a return spring 4 sleeved on the spring guide post 5, a guide cavity into which the upper portion of the spring guide post 5 can extend is further processed at the lower end of the movable connecting rod 16, so that the spring guide post 5 and the movable connecting rod 16 can relatively slide along the moving direction of the movable block 3, and two ends of the return spring 4 are respectively connected to the movable connecting rod 16 and the clamp body 1. When the oil pressure applied by the main hydraulic cylinder 11 is reduced (or recovered to the initial state), the movable block 3 can move to the top dead center under the action of the return spring 4, and the loosening and loading and unloading of the product are realized.

Referring to fig. 1 again, two fixed blocks 2 are oppositely arranged at intervals on the top of the fixture body 1, the cross section of the movable block 3 is in an inverted isosceles trapezoid shape and is located on the perpendicular bisector of the two fixed blocks 2, and a positioning gap capable of fixing the step shaft is formed between the movable block 3 and each fixed block 2.

The working principle of the embodiment is as follows:

the clamp body 1 is provided with a fine-ground positioning reference surface, the clamp body 1 is attracted on a magnetic workbench 15 (namely a workbench) through magnetic force, the precision of the positioning reference surface is guaranteed, then a workpiece 14 is placed between the fixed block 2 and the movable block 3, when the hexagon socket wrench 13 is screwed, oil in a main hydraulic oil cylinder is pressed and transmitted to the support hydraulic cylinder 9 through the hydraulic oil pipe 10, so that the support arm 7 is pushed by the hydraulic support 8 to pull the movable block 3 downwards, the workpiece 14 can be tightly positioned and clamped through the inclined surface design of the movable block 3, when the hexagon socket wrench is loosened, the oil pressure is reduced, the hydraulic support 8 falls back, the movable block 3 moves to an upper stop point under the action of the reset spring 4, and the loosening and loading and unloading of products are realized. In the process of clamping the product, downward component force is generated at the same time, so that the product is ensured to be tightly attached to a positioning reference surface, and high positioning precision and consistency are achieved.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a hydraulically operated fixture for grind step axle biplane, its characterized in that includes the workstation, installs the anchor clamps body on the workstation to and fixed block and movable block, the fixed setting of fixed block other at the location reference plane at anchor clamps body top, the movable block degree of freedom that reciprocates along perpendicular to location reference plane direction has, fixed block and movable block on the side processing of relative setting be the inclined plane form for form the positioning gap that can fix the step axle between fixed block and the movable block.

2. The hydraulic fixture for grinding the biplane of the step shaft as claimed in claim 1, wherein the fixture body has a hollow cavity, a vertically through-going movable through-hole is further processed at the top of the fixture body, a movable connecting rod is further disposed in the hollow cavity, one end of the movable connecting rod passes through the movable through-hole and is connected to the movable block, and the other end of the movable connecting rod is connected to a driving member disposed in the hollow cavity and is driven by the driving member to move up and down.

3. The hydraulic fixture for grinding the biplane of the step shaft as claimed in claim 2, wherein the driving member comprises a support base, a support arm, a support hydraulic cylinder and a main hydraulic cylinder, wherein the main hydraulic cylinder is provided with an adjustable pressure stud, the support hydraulic cylinder is provided with a support hydraulic column driven by hydraulic oil to move up and down, the main hydraulic cylinder and the support hydraulic cylinder are communicated through a hydraulic oil pipe, the middle part of the support arm is rotatably arranged on the support base, and two ends of the support arm are respectively movably connected with the support hydraulic column and the movable connecting rod.

4. A hydraulic clamp for grinding both surfaces of a stepped shaft as defined in claim 3, wherein the support hydraulic post and the movable connecting rod are both provided with a bar-shaped hole along the horizontal direction, and both ends of the support arm are respectively rotatably provided with a connecting pin shaft, which is further disposed in the bar-shaped hole and can move back and forth along the bar-shaped hole.

5. A hydraulic jig for grinding both surfaces of a stepped shaft according to claim 3 wherein the plurality of hydraulic cylinders are one or more, and when the plurality of hydraulic cylinders are provided, each hydraulic cylinder corresponds to one of the support arm, the movable link and the movable block.

6. A hydraulic jig for grinding both surfaces of a step shaft as defined in claim 5 wherein all the support cylinders share a master cylinder.

7. A hydraulic jig for grinding duplex surfaces of stepped shafts as defined in claim 3 wherein said pressure stud is further provided with a hexagonal socket at its top end and is screwed by a hexagonal socket wrench matching said hexagonal socket to adjust the pressure of the pressure stud against the hydraulic oil in the main hydraulic cylinder.

8. A hydraulic clamp for grinding biplanar surfaces of a step shaft as defined in claim 2 wherein a return spring is provided between the lower end of the movable connecting rod and the bottom of the clamp body.

9. The hydraulic fixture for grinding the biplane of the stepped shaft as claimed in claim 8, wherein the return elastic member comprises a spring guide pillar vertically disposed at the bottom of the fixture body and a return spring sleeved on the spring guide pillar, the lower end of the movable connecting rod is further processed with a guide cavity into which the upper portion of the spring guide pillar extends, so that the spring guide pillar and the movable connecting rod can slide relatively along the moving direction of the movable block, and two ends of the return spring are respectively connected to the movable connecting rod and the fixture body.

10. The hydraulic fixture for grinding the biplane of the step shaft as claimed in claim 1, wherein the fixed blocks are oppositely provided with two spaced blocks at the top of the fixture body, the section of the movable block is in an inverted isosceles trapezoid shape and is positioned on the perpendicular bisector of the two fixed blocks, and a positioning gap for fixing the step shaft is formed between the movable block and each fixed block.