Chamfer detection tool for outward rotation of oil pump

Abstract

The utility model provides an oil pump outward rotation chamfer detection tool, which relates to the technical field of powder metallurgy and comprises a bottom plate, an inclined surface arranged on the lower surface of the bottom plate, a scale fixing seat arranged on the inclined surface, a scale arranged on the scale fixing seat, a side baffle arranged on the upper surface of the bottom plate along the length direction and a rear baffle arranged on the upper surface of the bottom plate along the width direction. A first datum plane is arranged on one side face of the side baffle, a second datum plane is arranged on one side face of the rear baffle, the first datum plane and the second datum plane are arranged towards the inside of the bottom plate, and multiple corner columns are arranged at the bottom of the bottom plate. The chamfer detection tool for the outward rotation of the oil pump can quickly and accurately perform processing chamfer detection, and after calculation of a function formula, detection personnel can directly read to obtain a correct chamfer value, so that equipment adjustment can be more intuitively and effectively performed when size deviation occurs in product processing, the production quality is effectively stabilized, and the production efficiency is improved. And the company competitiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a chamfer detection tool for the outer rotation of an oil pump. Background Art

[0002] The rotor type oil pump has the advantages of compact structure, small external dimension, light weight, large oil suction vacuum degree, large oil pumping capacity, good oil supply uniformity and low cost, and is widely used in medium and small engines. The outer rotor of the oil pump is an important part among them; as the name implies, powder metallurgy mainly uses metal and non-metal powders as raw materials. First, the powders are proportioned and mixed properly, then the powders are loaded into the die cavity, and a certain pressure is applied to form a green compact with the required part shape and size, and then sintered; then, according to the requirements, finishing, heat treatment, machining and other post-treatments are carried out to obtain the product parts; the essential advantage of the powder metallurgy part production process is that it has the ability of final part forming and high material utilization rate; moreover, it can easily realize various types of composites, giving full play to the respective characteristics of the raw materials, and is a process technology for producing high-performance metal matrix composites at low cost. It is widely used in the production of mechanical parts with complex shapes. Since powder metallurgy products can produce parts with complex structures and high precision with little or no machining such as cutting, it can greatly save the materials and processing costs for producing oval teeth and reduce the production cost of products. In the process of mass production, the advantages are particularly obvious. However, because the powder metallurgy forming process belongs to die forming, burrs will inevitably be generated in the combination gap between the dies during the forming process.

[0003] For the outer rotor of the oil pump, in order to remove burrs, chamfer turning processing is carried out on the outer diameter of the product. The outer rotor of the oil pump belongs to precision components, and has relatively strict requirements for each dimension. Inevitably, certain precision requirements are also needed for the chamfer. The current detection of the chamfer is carried out by detection equipment such as a profilometer or a chamfer gauge, but its detection process is cumbersome and not conducive to on-site employees to carry out timely detection. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a chamfer detection tool for the outer rotation of an oil pump, which can quickly and accurately detect the processed chamfer. And after being calculated by a function formula, the detection personnel can directly read the correct chamfer value. When there are dimensional deviations in the product processing, the equipment can be adjusted more intuitively and effectively, effectively stabilizing the product quality and thus improving the company's competitiveness.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] An chamfer detection tool for the external rotation of an oil pump, comprising: a bottom plate, an inclined surface is provided on the lower surface of the bottom plate, a gauge fixing seat is provided on the inclined surface, a gauge is provided on the gauge fixing seat, a side baffle is provided on the upper surface of the bottom plate along the length direction, a rear baffle is provided on the upper surface of the bottom plate along the width direction, one side surface of the side baffle facing the bottom plate is in contact with one end side of the rear baffle, a first reference surface is provided on the side surface of the side baffle facing the bottom plate, a second reference surface is provided on the side surface of the rear baffle facing the bottom plate, and a plurality of corner posts are provided at the bottom of the bottom plate.

[0007] Preferably, for the chamfer detection tool for the external rotation of the oil pump, a plurality of chip removal grooves are provided at intervals on the top surface of the bottom plate, two side baffle locking threaded holes and two rear baffle locking threaded holes are also provided on the bottom plate, a gauge side head through hole and two gauge fixing seat locking threaded holes are provided on the inclined surface, and corner post locking threaded holes are provided on the lower surface of the bottom plate.

[0008] Preferably, for the chamfer detection tool for the external rotation of the oil pump, a reed cavity is provided on the side surface of the gauge fixing seat, the reed cavity includes a gauge fixing hole and through slots provided on both sides of the gauge fixing hole and communicating with the gauge fixing hole, two first screw clearance holes are provided on the upper surface of the gauge fixing seat, the first screw clearance holes communicate with the slots, a gauge fixing threaded hole is provided below the first screw clearance holes, two second screw clearance holes are provided on the side surface of the gauge fixing seat, and the gauge fixing seat is fixed to the bottom plate through the gauge fixing seat locking threaded holes, the second screw clearance holes and gauge fixing seat locking screws.

[0009] Preferably, for the chamfer detection tool for the external rotation of the oil pump, the distance between the two second screw clearance holes is the same as the distance between the two gauge fixing seat locking threaded holes, and the gauge fixing hole and the gauge side head through hole are on the same axis.

[0010] Preferably, for the chamfer detection tool for the external rotation of the oil pump, the side baffle has a rectangular structure, two side baffle locking counterbore holes matching the side baffle locking threaded holes are provided on the upper surface of the side baffle, a gauge probe avoiding groove is provided on the lower surface of the side baffle, and the side baffle is fixed to the bottom plate through the side baffle locking counterbore holes, the side baffle locking threaded holes and side plate locking screws.

[0011] Preferably, for the chamfer detection tool for the external rotation of the oil pump, the rear baffle has a rectangular structure, two rear baffle locking counterbore holes matching the rear baffle locking threaded holes are provided on the upper surface of the rear baffle; the rear baffle is fixed to the bottom plate through the rear baffle locking threaded holes, the rear baffle locking counterbore holes and rear baffle locking screws.

[0012] Preferably, for the chamfer detection tooling for the external rotation of the oil pump, wherein: a countersunk head hole for locking the corner post is provided on the corner post, and the corner post is fixed to the bottom plate through the countersunk head hole for locking the corner post, the threaded hole for locking the corner post, and the locking screw for the corner post.

[0013] Preferably, for the chamfer detection tooling for the external rotation of the oil pump, wherein: the dial gauge is fixed to the dial gauge fixing seat through the clearance hole for the first screw, the threaded hole for fixing the dial gauge, the through hole for the side head of the dial gauge, and the fixing screw for the dial gauge.

[0014] Advantages of the present utility model:

[0015] The chamfer detection tooling for the external rotation of the oil pump of the present utility model can quickly and accurately detect the machined chamfer. And after calculation by the function formula, the inspector can directly read the correct chamfer value. When there are dimensional deviations in product processing, the equipment can be adjusted more intuitively and effectively, effectively stabilizing the product quality, and thus enhancing the company's competitiveness. Description of the Drawings

[0016] Figure 1 It is a top view of the bottom plate of the present utility model.

[0017] Figure 2 It is a cross-sectional view of the bottom plate of the present utility model.

[0018] Figure 3 It is a bottom view of the bottom plate of the present utility model.

[0019] Figure 4 It is a cross-sectional view of the dial gauge fixing seat of the present utility model.

[0020] Figure 5 It is a top view of the side baffle of the present utility model.

[0021] Figure 6 It is a front view of the measuring baffle of the present utility model.

[0022] Figure 7 It is a top view of the rear baffle of the present utility model.

[0023] Figure 8 It is a cross-sectional view of the corner post of the present utility model.

[0024] Figure 9 An isometric view of the chamfer detection tooling for the external rotation of the oil pump of the present utility model.

[0025] Figure 10 It is a schematic side view of the measuring position of the present utility model. Detailed Embodiments

[0026] The present utility model will be further described below in conjunction with the specific drawings and embodiments.

[0027] As Figures 1 - 10 , a chamfer detection tooling for the external rotation of an oil pump, wherein: it includes a bottom plate 1, a slope surface 1-4 is arranged on the lower surface of the bottom plate 1, a dial indicator fixing seat 2 is arranged on the slope surface 1-4, a dial indicator 6 is arranged on the dial indicator fixing seat 2, side baffles 3 are arranged on the upper surface of the bottom plate 1 along the length direction, a rear baffle 4 is arranged on the upper surface of the bottom plate 1 along the width direction, one side surface of the side baffle 3 facing the bottom plate 1 is in contact with one end side of the rear baffle 4, a first reference surface 3-1 is arranged on the side surface of the side baffle 3 facing the bottom plate 1, a second reference surface 4-1 is arranged on the side surface of the rear baffle 4 facing the bottom plate 1, and a plurality of corner posts 5 are arranged at the bottom of the bottom plate 1.

[0028] A plurality of chip removal grooves 1-3 are arranged at intervals on the top surface of the bottom plate 1, two side baffle locking threaded holes 1-1 and two rear baffle locking threaded holes 1-2 are further arranged on the bottom plate 1, a dial indicator side head through hole 1-5 and two dial indicator fixing seat locking threaded holes 1-6 are arranged on the slope surface 1-4, and a corner post locking threaded hole 1-7 is arranged on the lower surface of the bottom plate 1.

[0029] A reed cavity 2-1 is arranged on the side surface of the dial indicator fixing seat 2. The reed cavity 2-1 includes a dial indicator fixing hole 2-1-1 and through slots 2-1-2 arranged on both sides of the dial indicator fixing hole 2-1-1 and communicating with the dial indicator fixing hole 2-1-1. Two first screw clearance holes 2-2 are arranged on the upper surface of the dial indicator fixing seat 2. The first screw clearance holes 2-2 communicate with the through slots 2-1-2. A dial indicator fixing threaded hole 2-3 is arranged below the first screw clearance holes 2-2. Two second screw clearance holes 2-4 are arranged on the side surface of the dial indicator fixing seat 2. The dial indicator fixing seat 2 is fixed on the bottom plate 1 through the dial indicator fixing seat locking threaded hole 1-6, the second screw clearance holes 2-4 and a dial indicator fixing seat locking screw 7.

[0030] The distance between the two second screw clearance holes 2-4 is the same as the distance between the two dial indicator fixing seat locking threaded holes 1-6. The dial indicator fixing hole 2-1-1 and the dial indicator side head through hole 1-5 are on the same axis.

[0031] The side baffle 3 is rectangular in structure. Two side baffle locking counterbore holes 3-2 matching with the side baffle locking threaded holes 1-1 are arranged on the upper surface of the side baffle 3. A dial indicator probe avoiding groove 3-3 is arranged on the lower surface of the side baffle 3. The side baffle 3 is fixed on the bottom plate 1 through the side baffle locking counterbore holes 3-2, the side baffle locking threaded holes 1-1 and a side plate locking screw 8.

[0032] The structure of the rear baffle 4 is rectangular, and two counterbored holes 4-2 for locking the rear baffle are provided on the upper surface of the rear baffle 4, which are matched with the threaded holes 1-2 for locking the rear baffle; the rear baffle 4 is fixed to the bottom plate 1 through the threaded holes 1-2 for locking the rear baffle, the counterbored holes 4-2 for locking the rear baffle, and the locking screws 9 for the rear baffle.

[0033] Counterbored holes 5-1 for locking the corner post are provided on the corner post 5, which are matched with the threaded holes 1-7 for locking the corner post. The corner post is fixed to the bottom plate 1 through the counterbored holes 5-1 for locking the corner post, the threaded holes 1-7 for locking the corner post, and the locking screws 10 for the corner post.

[0034] The gauge 6 is fixed to the gauge fixing seat 2 through the clearance holes 2-2 for the first screw, the threaded holes 2-3 for fixing the gauge, the through holes 1-5 for the side head of the gauge, and the fixing screws 11 for the gauge.

[0035] The bottom plate 1 is a rectangular plate, and its length, width and height specifications can be appropriately adjusted according to the size of the workpiece to be detected; the slope of the inclined surface 1-4 is 45˚; the gauge fixing seat 2 is a rectangular block, and a reed cavity 2-1 allowing the side head of the gauge 6 to pass through is provided on the side surface of the gauge fixing seat 2; the side baffle 3 is a rectangular block, and a tungsten steel sheet is inserted into the side surface of the side baffle 3 as the first reference surface 3-1 for part detection. In order to avoid interference of the side baffle 3 with the side head of the gauge 6 during detection, a relief groove 3-3 for the gauge probe is provided on the bottom surface of the side baffle 3; the rear baffle 4 is a rectangular block, and a tungsten steel sheet is inserted into the side surface of the rear baffle 4 as the second reference surface 4-1 for part detection; the corner post 5 is a cylinder, and a counterbored hole 5-1 for locking the corner post and matched with the locking screw 10 for the corner post is provided at the center.

[0036] The specific assembly process of the chamfer detection tooling for the external rotation of the oil pump:

[0037] 1. First, attach the gauge fixing seat 2 to the 45˚ inclined surface 1-4 provided in the bottom plate 1, and fix the gauge fixing seat 2 to the bottom plate 1 through the locking screws 7 for the gauge fixing seat, the clearance holes 2-4 for the second screw, and the threaded holes 1-6 for locking the gauge fixing seat.

[0038] 2. Attach the side baffle 3 to the top surface of the bottom plate 1 with the first reference surface 3-1 for part detection with the inserted tungsten steel sheet facing inwards; fix the side baffle 3 and the bottom plate 1 through the locking screws 8 for the side plate, the counterbored holes 3-2 for locking the side baffle, and the threaded holes 1-1 for locking the side baffle; in order to avoid interference of the side baffle 3 with the gauge detection, the relief groove 3-3 for the gauge probe is arranged above the through hole 1-5 for the side head of the gauge in the bottom plate 1 after the side baffle 3 and the bottom plate 1 are fixed.

[0039] 3. Attach the rear baffle 4 to the top surface of the bottom plate, with the second reference plane 4-1 for part inspection with tungsten carbide inserts facing inward. Fix the side baffle 4 to the bottom plate 1 by using the rear baffle locking screw 9 in cooperation with the rear baffle locking counterbore 4-2 and the rear baffle locking thread hole 1-2.

[0040] 4. Fix the corner post 5 to the bottom plate 1 by using the corner post locking screw 10, the corner post locking counterbore 5-1, and the corner post locking thread hole 1-7.

[0041] 5. Align the probe of the dial indicator 6 with the center of the probe head of the dial indicator through the dial indicator fixing thread hole 2-3, the side head through hole 1-5 of the dial indicator, and the dial indicator fixing screw 11 respectively through the screw clearance hole 2-2 provided in the top surface of the dial indicator fixing seat 2 and the dial indicator fixing thread hole 2-3, and lock and compress the provided reed cavity 2-1 to fix the dial indicator.

[0042] 6. Fix the dial indicator 6 to the dial indicator fixing seat 2 by using the first screw clearance hole 2-2, the dial indicator fixing thread hole 2-3, the side head through hole 1-5 of the dial indicator, and the dial indicator fixing screw 11 to lock and compress the reed cavity 2-1.

[0043] 7. When performing the inspection, align the 4 equal points of the outer diameter of the oil pump outer rotor to be inspected with the center of the probe head of the dial indicator 6, and ensure that the first reference plane 3-1 for part inspection in the measuring baffle 3 and the second reference plane 4-1 for part inspection in the rear baffle 4 are closely attached to the outer diameter of the oil pump rotor. At this time, the adjustment of the inspection tooling is basically completed.

[0044] When inspecting the chamfer of the oil pump outer rotor, since the inspection value is the center height of the chamfer, the inspection value needs to be calculated by matching the function. For example, the requirement for the chamfer of the outer diameter of the oil pump outer rotor is C0.5+ / -0.05. After calculation by the function formula, the lower limit value is: 0.45*sin45˚ = 0.3182, and the upper limit value is: 0.55*sin45˚ = 0.3889. Therefore, when the value obtained by the dial indicator during measurement is within the range of 0.3182~0.3889mm, it meets the specification requirements. Figure 10 In this, 12 is the inspection distance calculated by the function.

[0045] The chamfer inspection tooling of the oil pump outer rotor of the present utility model performs chamfer inspection, which can quickly and accurately perform the inspection of the machined chamfer. And because it is calculated by the function formula, the inspector can directly read the correct chamfer value. When there are dimensional deviations in product processing, it can more intuitively and effectively adjust the equipment, effectively stabilizing the product quality and thus improving the company's competitiveness.

[0046] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A chamfer detection tool for an oil pump, characterized in that: The invention comprises a base plate (1), wherein a sloped surface (1-4) is arranged on the lower surface of the base plate (1), a gauge fixing seat (2) is arranged on the sloped surface (1-4), a gauge (6) is arranged on the gauge fixing seat (2), a side baffle (3) is arranged on the upper surface of the base plate (1) along the length direction, a rear baffle (4) is arranged on the upper surface of the base plate (1) along the width direction, the side baffle (3) contacts one side of the base plate (1) and one end of the rear baffle (4), a first reference surface (3-1) is arranged on one side of the side baffle (3) facing the base plate (1), a second reference surface (4-1) is arranged on one side of the rear baffle (4) facing the base plate (1), and a plurality of corner columns (5) are arranged at the bottom of the base plate (1).

2. The chamfer detection tool for the oil pump outer rotation according to claim 1 is characterized in that: A plurality of chip removal grooves (1-3) are arranged at intervals on the top surface of the base plate (1), two side baffle locking screw holes (1-1) and two rear baffle locking screw holes (1-2) are also arranged on the base plate (1), a gauge side head through hole (1-5) and two gauge fixing seat locking threaded holes (1-6) are arranged on the inclined surface (1-4), and a corner column locking threaded hole (1-7) is arranged on the lower surface of the base plate (1).

3. The chamfer detection tool for the oil pump outer rotation according to claim 2 is characterized in that: A reed cavity (2-1) is arranged on the side of the meter fixing seat (2), and the reed cavity (2-1) comprises a meter fixing hole (2-1-1) and a through slot (2-1-2) arranged on both sides of the meter fixing hole (2-1-1) and penetrating the meter fixing hole (2-1-1). Two first screw clearance holes (2-2) are arranged on the upper surface of the meter fixing seat (2), and the first screw clearance holes (2-2) are penetrating with the slot (2-1-2). A meter fixing threaded hole (2-3) is arranged on the lower side of the first screw clearance hole (2-2). Two second screw clearance holes (2-4) are arranged on the side of the meter fixing seat (2). The meter fixing seat (2) is fixed to the base plate (1) through the meter fixing seat locking threaded hole (1-6), the second screw clearance hole (2-4) and the meter fixing seat locking screw (7).

4. The chamfer detection tool for the oil pump outer rotation according to claim 3 is characterized in that: The distance between the two second screw clearance holes (2-4) is the same as the distance between the two meter fixing seat locking threaded holes (1-6), and the meter fixing hole (2-1-1) and the meter side head through hole (1-5) are on the same axis.

5. The chamfer detection tool for the oil pump outer rotation according to claim 2, characterized in that: The side baffle (3) has a rectangular structure. Two side baffle locking countersunk holes (3-2) matching the side baffle locking screw holes (1-1) are arranged on the upper surface of the side baffle (3). A gauge probe avoidance groove (3-3) is arranged on the lower surface of the side baffle (3). The side baffle (3) is fixed to the base plate (1) via the side baffle locking countersunk holes (3-2), the side baffle locking screw holes (1-1) and the side plate locking screws (8).

6. The chamfer detection tool for the oil pump outer rotation according to claim 2, characterized in that: The structure of the rear baffle (4) is rectangular, and two rear baffle locking countersunk holes (4-2) matching with the rear baffle locking screw holes (1-2) are arranged on the upper surface of the rear baffle (4); the rear baffle (4) is fixed to the base plate (1) through the rear baffle locking screw holes (1-2), the rear baffle locking countersunk holes (4-2) and the rear baffle locking screws (9).

7. The chamfer detection tool for the oil pump outer rotation according to claim 2, characterized in that: The corner post (5) is provided with a corner post locking countersunk hole (5-1) that matches the corner post locking threaded hole (1-7); the corner post is fixed to the base plate (1) via the corner post locking countersunk hole (5-1), the corner post locking threaded hole (1-7), and the corner post locking screw (10).

8. The chamfer detection tool for the oil pump outer rotation according to claim 3 is characterized in that: The gauge (6) is fixed on the gauge fixing seat (2) through the first screw clearance hole (2-2), the gauge fixing threaded hole (2-3), the gauge side head passing hole (1-5), and the gauge fixing screw (11).

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