Multi-shaft drilling clamp for balance block

Abstract

The utility model belongs to the field of machine manufacturing, and relates to a clamp, in particular to a multi-drill clamp for a balance block. The tool comprises a bottom plate, and profiling angle iron and a positioning base plate are arranged on the bottom plate. In the using process, the balance block to be machined is placed on the positioning base plate, the side portion of the balance block abuts against the horizontal positioning assembly, the balance block is positioned, the balance block clamping piece moves towards the side, away from the horizontal positioning assembly, of the balance block, and the balance block is clamped. The positioning base plate limits three degrees of freedom of movement in the direction of the balance block and rotation around the shaft, the horizontal positioning assembly limits three degrees of freedom of movement in the direction of the balance block and rotation around the shaft, the balance block is prevented from shaking in the drilling process, the stability is good, the drilling guide structure plays a role in guiding a drill bit during drilling, angle deviation of drilling is avoided, and the drilling efficiency is improved. And the vertical precision of drilling is improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical manufacturing, and relates to a fixture, in particular to a multi-axis drill fixture for a balance weight. Background Art

[0002] The compressor is the heart of the refrigeration system, and the balance weight is a key component for maintaining dynamic balance when the compressor motor rotor rotates at high speed. When the refrigeration compressor works, the rotor drives the eccentric crankshaft to rotate, and the rotating crankshaft drives the piston sleeved on its eccentric part to compress the low-temperature and low-pressure refrigerant gas, so as to discharge the high-temperature and high-pressure refrigerant gas to the exhaust pipe, thus realizing the refrigeration cycle of compression → condensation → expansion → evaporation and heat absorption. During the refrigeration cycle, the eccentric rotational movement of the piston makes the working force of the whole system unbalanced, and it is easy to generate vibration and noise. In order to balance the working force of the compressor operation, a balance weight is added to the rotor end to keep the whole system in force balance. The function and purpose of the balance weight are to offset the unbalanced force generated by the eccentric rotational movement to a certain extent, keep the system balanced, and achieve the purpose of reducing noise, reducing vibration and reducing energy consumption.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a balance weight drilling fixture [Application No.: 202021240892.X], which includes a frame, a template and an ejection mechanism; Frame: A chain plate conveyor is installed inside, and the chain plates on the chain plate conveyor are frame plates; Template: A fixing groove for fixing the balance weight is opened at the top, and the template is clamped with the chain plate on the chain plate conveyor through a clamping mechanism; Ejection mechanism: Assembled at the bottom of the template; Among them, an insulating seat is also included, the end of the insulating seat is fixed on the inner wall of the frame, and an electromagnet is installed at the bottom of the insulating seat, and the electromagnet is arranged corresponding to the ejection mechanism. However, this solution is not suitable for the balance weight of the compressor motor rotor. When clamping and drilling the balance weight of the compressor motor rotor, the balance weight of the compressor motor rotor is still prone to position deviation and drill bit deviation, and there are defects of poor hole accuracy and processing efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above problems, and provide a multi-axis drill fixture for a balance weight. The technical problem to be solved by the utility model is how to improve the hole processing accuracy and efficiency of the balance weight.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-axis drilling fixture for a balance weight, comprising a bottom plate, a profiling angle iron and a positioning backing plate are provided on the bottom plate, a horizontal positioning component for abutting and positioning the balance weight in the horizontal direction is provided between the profiling angle iron and the positioning backing plate, a balance weight clamping member capable of making a horizontal reciprocating linear motion along one side close to or away from the horizontal positioning component is further provided on the bottom plate, the balance weight clamping member can clamp or loosen one side of the balance weight away from the horizontal positioning component, a drilling guiding structure is provided above the profiling angle iron, and a processing area is formed among the drilling guiding structure, the horizontal positioning component and the positioning backing plate.

[0007] In the above-mentioned multi-axis drilling fixture for a balance weight, the horizontal positioning component includes a first horizontal cushion strip and a second horizontal cushion strip arranged between the profiling angle iron and the positioning backing plate, one side of the first horizontal cushion strip and the second horizontal cushion strip is fixed to the profiling angle iron, and the other side is fixed to the positioning backing plate.

[0008] In the above-mentioned multi-axis drilling fixture for a balance weight, the center line of the first horizontal cushion strip is perpendicular to the center line of the second horizontal cushion strip.

[0009] In the above-mentioned multi-axis drilling fixture for a balance weight, the first horizontal cushion strip and the second horizontal cushion strip are connected to the profiling angle iron through a plurality of inner hexagon socket head cap screws.

[0010] In the above-mentioned multi-axis drilling fixture for a balance weight, the drilling guiding structure includes a guiding plate, the guiding plate is located above the profiling angle iron, two through holes are formed in the guiding plate, and the vertical projection of the through holes is staggered with the first horizontal cushion strip and the second horizontal cushion strip.

[0011] In the above-mentioned multi-axis drilling fixture for a balance weight, a guiding sleeve for guiding the drill bit is installed in the through hole.

[0012] In the above-mentioned multi-axis drilling fixture for a balance weight, the guiding plate is fixed to the bottom plate through a plurality of cylindrical pins.

[0013] In the above-mentioned multi-axis drilling fixture for a balance weight, the balance weight clamping member includes a cylinder arranged on the bottom plate, and a clamping block for clamping or loosening the balance weight is installed on the power shaft of the cylinder.

[0014] In the above-mentioned multi-axis drilling fixture for a balance weight, the cylinder is screwed and fixed to the bottom plate through two screws.

[0015] In the above-mentioned multi-axis drilling fixture for a balance weight, the profiling angle iron is fixed to the bottom plate through a plurality of inner hexagon socket head cap screws.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the use of the present utility model, the balance block to be processed is placed on the positioning backing plate, so that the side of the balance block abuts against the horizontal positioning component to position the balance block. Then, the balance block clamping member moves towards the side of the balance block away from the horizontal positioning component to clamp the balance block. The positioning backing plate restricts the movement in three degrees of freedom in the direction of the balance block and the rotation around the axis, and the horizontal positioning component restricts the movement in three degrees of freedom in the direction and the rotation around the axis, avoiding the shaking of the balance block during the drilling process, with good stability. During drilling, the drilling guiding structure guides the drill bit, avoiding the angular deviation of the drilling and improving the vertical accuracy of the drilling.

[0018] 2. When drilling with the present utility model, the guide sleeve in the guide plate can guide the drill bit, avoiding the angular deviation during downward drilling and improving the drilling accuracy.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0020] Figure 1 is the assembly drawing of the present utility model.

[0021] Figure 2 is the assembly sectional view in another direction of the present utility model.

[0022] Figure 3 is the structural schematic diagram of the balance block.

[0023] In the figure: base plate 1, profile angle 2, positioning backing plate 3, horizontal positioning component 4, first horizontal cushion strip 4a, second horizontal cushion strip 4b, balance block clamping member 5, air cylinder 5a, drilling guiding structure 6, guide plate 6a, guide sleeve 6b, processing area 7, balance block 100. Detailed Embodiment

[0024] The present utility model will be further described below with reference to the drawings.

[0025] As Figures 1-3 shown, a multi-axis drill fixture for a balance block includes a base plate 1. A profile angle 2 and a positioning backing plate 3 are provided on the base plate 1. A horizontal positioning component 4 for abutting and positioning the balance block 100 in the horizontal direction is provided between the profile angle 2 and the positioning backing plate 3. A balance block clamping member 5 capable of making a horizontal reciprocating linear motion along the side close to or away from the horizontal positioning component 4 is further provided on the base plate 1. The balance block clamping member 5 can clamp or release the side of the balance block 100 away from the horizontal positioning component 4. A drilling guiding structure 6 is provided above the profile angle 2. A processing area 7 is formed among the drilling guiding structure 6, the horizontal positioning component 4 and the positioning backing plate 3.

[0026] In this embodiment, during use, the balance weight 100 to be processed is placed on the positioning backing plate 3, such that the side portion of the balance weight 100 abuts against the horizontal positioning assembly 4 to position the balance weight 100. Then, the balance weight clamping member 5 moves towards the side of the balance weight 100 away from the horizontal positioning assembly 4 to clamp the balance weight 100. The positioning backing plate 3 restricts three degrees of freedom of the balance weight 100 in the Z direction and rotation about the X and Y axes, and the horizontal positioning assembly 4 restricts three degrees of freedom of the balance weight 100 in the X and Y directions and rotation about the Z axis, preventing the balance weight 100 from jittering during the drilling process, with good stability. During drilling, the drilling guiding structure 6 guides the drill bit, preventing the drilling from deviating in angle and improving the vertical accuracy of the drilling.

[0027] Combined with Figures 1-3 As shown, the horizontal positioning assembly 4 includes a first horizontal pad bar 4a and a second horizontal pad bar 4b disposed between the profile angle 2 and the positioning backing plate 3. One side of the first horizontal pad bar 4a and the second horizontal pad bar 4b is fixed to the profile angle 2, and the other side is fixed to the positioning backing plate 3. The center line of the first horizontal pad bar 4a is perpendicular to the center line of the second horizontal pad bar 4b.

[0028] In this embodiment, the first horizontal pad bar 4a and the second horizontal pad bar 4b can abut and fix the side portion of the balance weight 100 to be processed, playing a role in restricting three degrees of freedom of the balance weight 100 in the X and Y directions and rotation about the Z axis.

[0029] Combined with Figure 1 、 Figure 2 As shown, the first horizontal pad bar 4a and the second horizontal pad bar 4b are connected to the profile angle 2 by a plurality of socket head cap screws.

[0030] In this embodiment, the first horizontal pad bar 4a and the second horizontal pad bar 4b are connected to the profile angle 2 by a plurality of socket head cap screws, which are simple and convenient to disassemble and assemble, facilitating subsequent maintenance and replacement.

[0031] The drilling guiding structure 6 includes a guide plate 6a. The guide plate 6a is located above the profile angle 2. The guide plate 6a has two through holes, and the vertical projection of the through holes is staggered with the first horizontal pad bar 4a and the second horizontal pad bar 4b. A guide sleeve 6b for guiding the drill bit is installed in the through holes.

[0032] In this embodiment, during drilling, the guide sleeve 6b in the guide plate 6a can guide the drill bit, preventing the angle from deviating during downward drilling and improving the accuracy of the drilling.

[0033] The guide plate 6a is fixed to the bottom plate 1 by a plurality of cylindrical pins 6c.

[0034] In this embodiment, the guide plate 6a is fixed to the bottom plate 1 by a number of cylindrical pins 6c, which is simple and convenient for disassembly and assembly, and is convenient for subsequent maintenance and replacement.

[0035] Combined with Figure 1 As shown, the balance weight clamping member 5 includes a cylinder 5a disposed on the bottom plate 1, and a clamping block for clamping or loosening the balance weight 100 is installed on the power shaft of the cylinder 5a.

[0036] In this embodiment, when it is necessary to clamp the balance weight 100, the cylinder 5a is started, and the clamping block is driven by the power shaft of the cylinder 5a to abut against the balance weight 100 at a position away from the first horizontal pad 4a and the second horizontal pad 4b, and cooperate with the first horizontal pad 4a and the second horizontal pad 4b to achieve multi-directional clamping and fixing, and the fixing effect is good.

[0037] Combined with Figures 1-2 As shown, the cylinder 5a and the bottom plate 1 are fixedly screwed by two screws, and the profile angle iron 2 and the bottom plate 1 are fixed by a number of hexagon socket head cap screws.

[0038] In this embodiment, it is convenient to disassemble, assemble and maintain each component through screws and hexagon socket head cap screws, the operation is simple and convenient, and the practicability is strong.

[0039] The working principle of the present utility model is:

[0040] During use, the balance weight 100 to be processed is placed on the positioning backing plate 3, so that the side of the balance weight 100 abuts against the first horizontal pad 4a and the second horizontal pad 4b to position the balance weight 100, and then the cylinder 5a is started. The clamping block is driven by the power shaft of the cylinder 5a to abut against the balance weight 100 at a position away from the first horizontal pad 4a and the second horizontal pad 4b, and cooperate with the first horizontal pad 4a and the second horizontal pad 4b to achieve multi-directional clamping and fixing, and the fixing effect is good. The positioning backing plate 3 restricts the movement of the balance weight 100 in the Z direction and the rotation around the X and Y axes of three degrees of freedom. The first horizontal pad 4a and the second horizontal pad 4b restrict the movement in the X and Y directions and the rotation around the Z axis of three degrees of freedom, avoiding the balance weight 100 from shaking during the drilling process, and the stability is good. When drilling, the guide sleeve 6b in the guide plate 6a can guide the drill bit, avoiding angle deviation when drilling downward and improving the drilling accuracy.

[0041] The first horizontal cushion bar 4a and the second horizontal cushion bar 4b are connected to the profile angle iron 2 by a number of socket head cap screws, which are simple and convenient to disassemble and assemble, facilitating subsequent maintenance and replacement. The guide plate 6a is fixed to the bottom plate 1 by a number of cylindrical pins 6c, which are simple and convenient to disassemble and assemble, facilitating subsequent maintenance and replacement. The screws and socket head cap screws facilitate the disassembly, assembly and maintenance of each component, with simple and convenient operation and strong practicability.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar ways for substitution, but will not deviate from the spirit of the present utility model.

[0043] Although terms such as bottom plate 1, profile angle iron 2, positioning cushion plate 3, horizontal positioning assembly 4, first horizontal cushion bar 4a, second horizontal cushion bar 4b, balance block clamping member 5, cylinder 5a, drilling guide structure 6, guide plate 6a, guide sleeve 6b, processing area 7, balance block 100, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A multi-axis drilling fixture for a balancing weight, comprising a base plate (1), characterized in that: The base plate (1) is provided with a support angle iron (2) and a positioning pad (3); a horizontal positioning assembly (4) for abutting and positioning the balancing block (100) in the horizontal direction is provided between the support angle iron (2) and the positioning pad (3); the base plate (1) is also provided with a balancing block clamping member (5) capable of horizontal reciprocating linear motion along a side close to or away from the horizontal positioning assembly (4); the balancing block clamping member (5) can clamp or release the side of the balancing block (100) away from the horizontal positioning assembly (4); a drilling guide structure (6) is provided above the support angle iron (2); a processing area (7) is formed between the drilling guide structure (6), the horizontal positioning assembly (4) and the positioning pad (3).

2. A multi-axis drilling fixture for a balancing weight according to claim 1, characterized in that: The horizontal positioning assembly (4) comprises a first horizontal pad (4a) and a second horizontal pad (4b) which are arranged between the formwork angle iron (2) and the positioning pad (3); one side of the first horizontal pad (4a) and the second horizontal pad (4b) are fixed to the formwork angle iron (2), and the other side is fixed to the positioning pad (3).

3. A multi-axis drilling fixture for a balancing weight according to claim 2, characterized in that: The center line of the first horizontal pad strip (4a) and the center line of the second horizontal pad strip (4b) are perpendicular to each other.

4. A multi-axis drilling fixture for a balancing weight according to claim 3, characterized in that: The first horizontal gasket (4a) and the second horizontal gasket (4b) are connected to the formwork angle iron (2) via a plurality of hexagon socket head screws.

5. A multi-axis drilling fixture for a balancing weight according to any one of claims 2 to 4, characterized in that: The drilling guide structure (6) comprises a guide plate (6a), the guide plate (6a) is located above the template angle iron (2), the guide plate (6a) has two through holes, and the vertical projections of the through holes are staggered with the first horizontal pad strip (4a) and the second horizontal pad strip (4b).

6. A multi-axis drilling fixture for a balancing weight according to claim 5, characterized in that: A guide sleeve (6b) for guiding the drill bit is arranged in the through hole.

7. A multi-axis drilling fixture for a balancing weight according to claim 6, characterized in that: The guide plate (6a) is fixed to the base plate (1) via a plurality of cylindrical pins (6c).

8. A multi-axis drilling fixture for a balancing weight according to any one of claims 2 to 4, characterized in that: The balancing block clamping member (5) comprises a cylinder (5a) arranged on a base plate (1), and a clamping block for clamping or loosening the balancing block (100) is installed on a power shaft of the cylinder (5a).

9. A multi-axis drilling fixture for a balancing weight according to claim 8, characterized in that: The cylinder (5a) and the base plate (1) are screwed and fixed by two screws.

10. The multi-axis drilling fixture for a balancing weight according to claim 1, characterized in that: The formwork angle iron (2) and the base plate (1) are fixed to each other via a plurality of hexagon socket head screws.

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