Clamp for turning eccentric workpiece

Abstract

The utility model belongs to the field of lathe fixtures, particularly relates to a fixture for turning an eccentric workpiece, and aims to solve the problems that when an existing fixture for turning the eccentric workpiece is used, eccentric adjustment of a fixing block of the fixture is realized by rotating a screw, but vibration is generated in the machining process of a machined workpiece, so that the stress of the screw is positively increased, the tightening force is insufficient, and the machining efficiency is high. In order to solve the problem that the screw is loosened and defective products are easy to appear, the following scheme is provided: the device comprises a connecting piece, a positioning block and fixing assemblies, a baffle plate is arranged on the connecting piece, a mounting plate is arranged on the baffle plate, a positioning groove and a plurality of adjusting grooves are formed in the mounting plate, the positioning block is arranged on the mounting plate, and two fixing assemblies are arranged on the positioning block. Through cooperation of all the components, eccentric fixing of a machined part can be achieved, the problems existing in the prior art are solved, and the eccentric fixing device is simple in structure, easy to operate and higher in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe clamps, in particular to a clamp for turning an eccentric workpiece. Background Art

[0002] In the field of mechanical processing, it is usually necessary to process on a lathe. There are some difficult-to-process parts in the machining industry, especially eccentric parts with complex shapes or spinal implants implanted in the human body, which cannot be processed by a machining center.

[0003] A commonly used method in the prior art is to use a gasket to turn the eccentric part on a three-jaw or four-jaw chuck of a lathe. This method is difficult to adjust and is prone to accidents due to loose gaskets. In response to the above problem, the application number is: 201921352276.0. A fixture for turning an eccentric workpiece and a turning tool containing the same are disclosed, which include a fixture body and a positioning block. The fixture body includes a fixing portion, and a free end surface of the fixing portion forms a fixing groove. The fixed end of the eccentric shaft part to be processed is placed in the fixing groove. The positioning block is fixedly connected to the fixing portion to fix the eccentric shaft part to be processed in the fixing groove, and after fixing, the eccentric shaft of the eccentric shaft part to be processed coincides with the central axis of the fixture body.

[0004] However, after reading the above patent documents, the following problems are found: when in use, the eccentric adjustment of the fixing block is achieved by rotating the screw, but vibration is generated during the processing of the workpiece, resulting in an increase in the force on the screw and insufficient tightening force, which makes the screw loose and easily produces defective products. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a clamp for turning an eccentric workpiece.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The fixing assembly comprises a first slide block, a second slide block, a second slide block, a third slide block, and a spring. The second slide block is fixedly connected to the fixing assembly, wherein the fixing assembly comprises a first slide block, a second slide block, a third slide block, a fourth slide block, and a fifth slide block. The fixing assembly comprises a first slide block, a second slide block, a third slide block, a fourth slide block, and a fifth slide block. The fixing assembly comprises a first slide block, a second slide block, a fourth slide block, a fifth slide block, and a fifth slide block. The second slide block is fixedly connected to the fixing assembly, wherein the first slide block is fixedly connected to the fixing assembly, wherein the second slide block is fixedly connected to the fixing assembly, wherein the second slide block is

[0008] Specifically, a T-shaped rod is slidably connected to the insertion rod, one end of the T-shaped rod is fixedly connected to the movable plate, a spring is fixedly sleeved on the T-shaped rod, one end of the spring is fixedly connected to the insertion rod, and the T-shaped rod is restored to its original state by the action of the spring.

[0009] Specifically, magnetic blocks 2 are fixedly installed on both sides of the movable plate, and magnetic blocks 1 are adsorbed and connected to the two magnetic blocks 2. The two magnetic blocks 1 are fixedly connected to the two sliders respectively. The magnetic force between the two magnetic blocks 1 and the two magnetic blocks 2 is used to keep the two sliders in contact with the movable plate.

[0010] Specifically, the two insertion rods are respectively plugged into the positioning groove and one of the multiple adjustment grooves to form a detachable connection.

[0011] Specifically, annular grooves are provided in the positioning groove and the plurality of adjusting grooves, and the plurality of annular grooves are adapted to the two sliders. The purpose of preventing the insertion rod from loosening is achieved through the interaction between the annular grooves and the two sliders.

[0012] Specifically, a plurality of adjustment slots are arranged at equal intervals on the mounting plate, so as to facilitate adjustment of the positioning block.

[0013] Specifically, the two fixed components are symmetrical, the central axes of the positioning block, the mounting plate, the baffle and the connecting piece coincide, and by adjusting the position of the central axis between the positioning block and the mounting plate, both coaxial workpieces and eccentric workpieces can be turned.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a fixture for turning eccentric workpieces. Through the coordinated design of the fixing assembly, the mounting plate, the positioning groove and the adjusting groove, the position of the central axis between the positioning block and the mounting plate can be adjusted, thereby achieving the goal of turning both coaxial workpieces and eccentric workpieces. The fixture is easy to adjust and will not loosen, and has higher practicality.

[0016] The utility model discloses a clamp for turning an eccentric workpiece. The fixture can realize the rapid installation and removal of a positioning block through the coordinated design of a fixing component and a mounting plate, so that workers can adjust the positioning block conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following will briefly introduce the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and the structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance, and any structural modification, change in proportional relationship or adjustment of size.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a fixture for turning eccentric workpieces proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the main structural anatomy of a fixture for turning eccentric workpieces proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a fixing assembly of a fixture for turning an eccentric workpiece proposed by the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the baffle, the mounting plate, the positioning slot and the adjustment slot;

[0022] Figure 5 It is a structural schematic diagram of the insertion rod, the slider and the sliding groove.

[0023] In the figure: 1. Connecting piece; 2. Baffle; 3. Mounting plate; 4. Positioning block; 5. Fixing assembly; 51. Insert rod; 52. Sliding block; 53. Sliding slot 1; 54. Moving plate; 55. Magnetic block 1; 56. Magnetic block 2; 57. T-bar; 58. Spring; 6. Positioning slot; 7. Adjusting slot. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Reference Figure 1-5 A fixture for turning an eccentric workpiece, comprising a connecting member 1, a positioning block 4 and a fixing assembly 5, wherein the connecting member 1 is provided with a baffle plate 2, the baffle plate 2 is provided with a mounting plate 3, the mounting plate 3 is provided with a positioning groove 6 and a plurality of adjustment grooves 7, the mounting plate 3 is provided with a positioning block 4, the positioning block 4 is provided with two fixing assemblies 5, the two fixing assemblies 5 are respectively connected with the positioning groove 6 and one of the plurality of adjustment grooves 7, the fixing assembly 5 comprises an insert rod 51, a slider 52, a moving plate 54, a magnetic block 1 55, and a magnetic block 2 56 , T-shaped rod 57 and spring 58, two plug rods 51 are fixedly connected to the positioning block 4, and sliders 52 are slidably connected on both sides of the plug rod 51, and a sliding groove 53 is opened at one end of the plug rod 51, and a movable plate 54 is slidably connected in the sliding groove 53, and the movable plate 54 is slidably connected to the two sliders 52. Through the coordinated design of the fixed component 5, the mounting plate 3, the positioning groove 6 and the adjustment groove 7, the position of the central axis between the positioning block 4 and the mounting plate 3 can be adjusted, so as to achieve the turning of coaxial workpieces and eccentric workpieces, which is easy to adjust and will not loosen, and has higher practicality.

[0026] In this embodiment, a T-rod 57 is slidably connected to the insertion rod 51, one end of the T-rod 57 is fixedly connected to the movable plate 54, a spring 58 is fixedly sleeved on the T-rod 57, one end of the spring 58 is fixedly connected to the insertion rod 51, and the T-rod 57 is restored to its original state by the action of the spring 58.

[0027] In this embodiment, magnetic blocks 2 56 are fixedly installed on both sides of the movable plate 54, and magnetic blocks 1 55 are adsorbed and connected to the two magnetic blocks 2 56. The two magnetic blocks 1 55 are fixedly connected to the two sliders 52 respectively. The magnetic force between the two magnetic blocks 1 55 and the two magnetic blocks 2 56 is used to keep the two sliders 52 in contact with the movable plate 54.

[0028] In this embodiment, the two insertion rods 51 are respectively inserted into the positioning groove 6 and one of the plurality of adjustment grooves 7 , and are detachably connected.

[0029] In this embodiment, annular grooves are provided in the positioning groove 6 and the plurality of adjustment grooves 7 , and the plurality of annular grooves are adapted to the two sliders 52 . The interaction between the annular grooves and the two sliders 52 can prevent the insertion rod 51 from loosening.

[0030] In this embodiment, a plurality of adjustment slots 7 are arranged at equal intervals on the mounting plate 3 , so as to facilitate adjustment of the positioning block 4 .

[0031] In this embodiment, the two fixing components 5 are symmetrical, and the central axes of the positioning block 4, the mounting plate 3, the baffle 2 and the connecting member 1 coincide with each other. By adjusting the position of the central axis between the positioning block 4 and the mounting plate 3, it is possible to turn both coaxial workpieces and eccentric workpieces.

[0032] Working principle: When in use, first insert one of the two plug rods 51 on the positioning block 4 into the positioning groove 6 on the mounting plate 3. During this process, the staff manually presses the T-bar 57 and compresses the spring 58, so that the movable plate 54 slides to the left on the plug rod 51. At the same time, through the magnetic force between the two magnetic blocks 56 and the two magnetic blocks 1 55, the two sliders 52 slide toward the inside of the plug rod 51. After the movable plate 54 slides a certain distance and one side of the two sliders 52 is flush with the outer wall of the plug rod 51, the plug rod 51 is then inserted into the positioning groove 6, and the two sliders 52 are aligned with the positioning The annular groove in the groove 6 corresponds to the annular groove, and then the T-bar 57 is loosened, and the T-bar 57 is restored to its original state by the force of the spring 58. At the same time, the moving plate 54 pushes the two sliders 52 and makes the two sliders 52 slide into their annular grooves. At the same time, another insertion rod 51 is inserted into one of the multiple adjustment grooves 7, so as to fix the positioning block 4; then the positioning block 4 is rotated a certain angle with the positioning groove 6 as the center of the circle, and its insertion rod 51 is plugged into one of the multiple adjustment grooves 7. In this process, the central axis of the positioning block 4 deviates from the central axis of the mounting plate 3, so as to achieve the purpose of eccentrically fixing the workpiece;

[0033] The technical progress achieved by the utility model compared with the prior art is that the cooperation of various components can not only realize the eccentric fixation of the workpiece, but also solve the problems existing in the prior art, and the structure is simple and easy to operate, and the practicality is higher.

Claims

1. A fixture for turning an eccentric workpiece, characterized in that: The invention comprises a connecting member (1), a positioning block (4) and a fixing assembly (5), wherein the connecting member (1) is provided with a baffle (2), the baffle (2) is provided with a mounting plate (3), the mounting plate (3) is provided with a positioning groove (6) and a plurality of adjustment grooves (7), the mounting plate (3) is provided with a positioning block (4), the positioning block (4) is provided with two fixing assemblies (5), the two fixing assemblies (5) are respectively connected to the positioning groove (6) and one of the plurality of adjustment grooves (7), the fixing assemblies (5) are respectively connected to the positioning groove (6) and one of the adjustment grooves (7), and the fixing assemblies (5) are respectively connected to the positioning groove (6) and one of the adjustment grooves (7). The component (5) comprises an insertion rod (51), a slider (52), a movable plate (54), a first magnetic block (55), a second magnetic block (56), a T-shaped rod (57) and a spring (58); the positioning block (4) is fixedly connected to two insertion rods (51); both sides of the insertion rod (51) are slidably connected to the sliders (52); one end of the insertion rod (51) is provided with a first sliding groove (53); the first sliding groove (53) is slidably connected to the movable plate (54); the movable plate (54) is slidably connected to the two sliders (52); and the movable plate (54) is slidably connected to the two sliders (52).

2. A fixture for turning an eccentric workpiece according to claim 1, characterized in that: A T-shaped rod (57) is slidably connected to the insertion rod (51), one end of the T-shaped rod (57) is fixedly connected to the movable plate (54), a spring (58) is fixedly sleeved on the T-shaped rod (57), one end of the spring (58) is fixedly connected to the insertion rod (51).

3. A fixture for turning an eccentric workpiece according to claim 1, characterized in that: Two magnetic blocks (56) are fixedly mounted on both sides of the movable plate (54), and two magnetic blocks (56) are adsorbed and connected to one magnetic block (55), and the two magnetic blocks (55) are fixedly connected to the two sliding blocks (52) respectively.

4. A fixture for turning an eccentric workpiece according to claim 1, characterized in that: The two insertion rods (51) are respectively inserted into the positioning groove (6) and one of the plurality of adjustment grooves (7).

5. A fixture for turning an eccentric workpiece according to claim 4, characterized in that: An annular groove is provided in the positioning groove (6) and the plurality of adjustment grooves (7), and the plurality of annular grooves are adapted to fit the two sliding blocks (52).

6. A fixture for turning an eccentric workpiece according to claim 5, characterized in that: The plurality of adjustment slots (7) are arranged at equal intervals on the mounting plate (3).

7. A fixture for turning an eccentric workpiece according to claim 1, characterized in that: The two fixing components (5) are symmetrical with each other, and the central axes of the positioning block (4), the mounting plate (3), the baffle plate (2) and the connecting member (1) coincide with each other.

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