Dimension detection device for fuel injector body
By designing the injector body size detection device, using components such as contour blocks and positioning round sleeves, the problem of low detection efficiency of the injector body oil inlet hole size detection is solved, and efficient and accurate detection results are achieved.
Patent Information
- Application Number
- CN202323483083.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In the prior art, the center of the outer end of the oil inlet hole of the injector body and the one end of the injector body have low efficiency and are prone to errors, which requires manual operation with high technical requirements.
A fuel injector body size detection device is designed, and the dimensions between one end of the fuel injector body and the center of the outer end of the oil inlet hole are detected by using a concentric block comparison method. Through the feeding table, reference block, concentric block, and positioning The combination of round sleeve and lock bolt ensures detection accuracy and efficiency.
It improves detection efficiency and accuracy, reduces errors in manual operations, and achieves fast and accurate dimensional detection.
Smart Images
Figure CN222188061U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inspection tools, in particular to a device for inspecting the dimensions of a fuel injector. Background Art
[0002] Injector body The main part of the injector, used to install the injection nozzle and other injector parts, and has fuel channels.
[0003] like Figure 1 As shown, a valve cavity 701 for installing a valve core is provided at one end of the injector body 7, a joint seat 702 is provided on the outside of the injector body 7, and a threaded oil inlet hole 703 with a transition joint is provided on the outer end surface of the joint seat 702. After the machining of the injector body 7 is completed, it is necessary to detect whether the dimension L between the center of the outer end of the oil inlet hole 703 and one end of the injector body 7 is qualified.
[0004] This dimension is difficult to detect. If it is manually detected using measuring tools such as a micrometer, the efficiency is very low, the technical requirements for the measurement personnel are high, and detection errors are prone to occur. Utility Model Content
[0005] The purpose of the utility model is to provide a device for detecting the size of an injector body, which uses a method of comparing equal height blocks to detect whether the size L between one end of the injector body and the center of the outer end of the oil inlet hole is qualified. The detection efficiency is high and the detection result is accurate, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A device for detecting the size of an injector body comprises a base, a material placement table and a convex block are provided on the base, a reference block and a material placement block for supporting the injector body are connected to the material placement table, and an equal height block is placed on the reference block; the convex block is provided with mutually parallel inclined surfaces and cut surfaces, a step hole is provided on the convex block between the inclined surface and the cut surface, one end of the step hole is a smooth hole, and the other end is a threaded hole, a positioning sleeve is connected in the smooth hole, a locking bolt is threadedly matched with the threaded hole, an upper end face of the reference block is flush with the center of the circle of the upper end face of the positioning sleeve, and an inclination angle α of the outer end face of the injector body joint seat is the same as an inclination angle β of the upper end face of the positioning sleeve.
[0008] A further improvement of the utility model is that a screw is connected to the bottom end of the material placement block, the screw thread is matched with the base, and arcs matching the valve cavity of the injector body are arranged on both sides of the material placement block.
[0009] A further improvement of the utility model is that the reference block is connected to the material placement table through a hexagon socket bolt.
[0010] A further improvement of the utility model is that the reference block and the equal height block are both cylindrical.
[0011] A further improved solution of the utility model is that the positioning circular sleeve is interference-fitted with the light hole end of the step hole, and the positioning circular sleeve protrudes from the inclined surface.
[0012] A further improved solution of the utility model is that the locking bolt passes through the positioning circular sleeve and protrudes from the upper end surface of the reference block.
[0013] A further improved solution of the utility model is that the head of the locking bolt is clamped on the cut surface.
[0014] Beneficial effects of the utility model:
[0015] The fuel injector body size detection device of the utility model detects the size L between one end of the fuel injector body and the center of the outer end of the fuel inlet hole by using the equal height block comparison method, and has high detection efficiency and accurate detection results.
[0016] The utility model discloses a fuel injector body size detection device, and the arrangement of the cut surface on the convex block facilitates the installation of the hexagon socket bolt.
[0017] In the fuel injector body size detection device of the utility model, arcs matching the fuel injector body valve cavity are arranged on both sides of the material placement block, so that the fuel injector body can be quickly placed on the material placement block. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the injector body.
[0019] Figure 2 It is a front view of the utility model.
[0020] Figure 3 for Figure 2 Top view of the .
[0021] Figure 4 for Figure 2 Partial cross-sectional view along the AA axis.
[0022] Figure 5 It is a schematic diagram showing that the upper end surface of the reference block in the utility model is flush with the center of the upper end surface of the positioning circular sleeve.
[0023] Figure 6 It is a schematic diagram of the structure of the utility model in working state.
[0024] In the figure: 1-base, 101-loading table, 102-bump, 103-inclined surface, 104-cut surface, 105-step hole, 2-reference block, 201-hexagon socket bolt, 3-loading block, 4-equal height block, 5-positioning sleeve, 6-locking bolt, 7-injector body, 701-valve chamber, 702-connector seat, 703-oil inlet hole. DETAILED DESCRIPTION
[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] Example 1: Figures 1 to 6 As shown, a device for detecting the size of an injector body comprises a base 1, on which a material placing table 101 and a convex block 102 are provided, on which a reference block 2 and a material placing block 3 for supporting an injector body 7 are connected, and on which a height equalizing block 4 is placed; on the convex block 102, a mutually parallel inclined surface 103 and a cut surface 104 are provided, and on the convex block 102 between the inclined surface 103 and the cut surface 104, a stepped hole 105 is provided, one end of the stepped hole 105 is a light hole, and the other end is a threaded hole, in which a positioning circular sleeve 5 is connected, a locking bolt 6 is threadedly matched with the threaded hole, an upper end face of the reference block 2 is flush with the center of the circle of the upper end face of the positioning circular sleeve 5, and an inclination angle α of the outer end face of the connector seat 702 of the injector body 7 is the same as an inclination angle β of the upper end face of the positioning circular sleeve 5.
[0027] The bottom end of the material placement block 3 is connected with a screw rod, the screw rod thread is matched with the base 1, and arcs adapted to the valve cavity 701 of the injector body 7 are arranged on both sides of the material placement block 3.
[0028] The reference block 2 is connected to the material placement table 101 via a hexagon socket bolt 201 .
[0029] The reference block 2 and the equal-height block 4 are both cylindrical.
[0030] The positioning sleeve 5 is interference-fitted with the light hole end of the step hole 105 , and the positioning sleeve 5 protrudes from the inclined surface 103 .
[0031] The locking bolt 6 passes through the positioning circular sleeve 5 and protrudes from the upper end surface of the reference block 2 .
[0032] The head of the locking bolt 6 is clamped on the cut surface 104 .
[0033] The specific working principle of the utility model is as follows:
[0034] In this embodiment, the inclination angle α of the outer end surface of the connector seat 702 of the injector body 7 and the inclination angle β of the upper end surface of the positioning sleeve 5 are both 60°.
[0035] like Figure 6 As shown, during work, the operator places the injector body 7 on the placing block 3, that is, the lower end surface of the injector body 7 contacts the placing table 101, and the placing block 3 is embedded in the valve cavity 701; the outer end surface of the connector seat 702 of the injector body 7 contacts the upper end surface of the positioning sleeve 5; the operator holds the locking bolt 6 and screws it from the threaded hole to the threaded oil inlet hole 703, and the injector body 7 is fixed at this time.
[0036] Figure 5The dotted line in the figure shows that the upper end face of the reference block 2 is flush with the center of the upper end face of the positioning circular sleeve 5, and the height dimension of the contour block 4 is consistent with the qualified dimension L; the operator places the contour block 4 on the reference block 2, and uses a height gauge to detect the height dimension B of the top of the injector body 7 and the height dimension B' of the contour block 4; if the value of dimension B is the same as the value of dimension B' or the difference is within the allowable error range, it means that the dimension L on the injector body 7 is qualified; similarly, if the value of dimension B is different from the value of dimension B' and the difference is beyond the allowable error range, it means that the dimension L on the injector body 7 is unqualified.
[0037] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A fuel injector body size detection device, characterized in that: The invention comprises a base (1), wherein a material placement platform (101) and a convex block (102) are provided on the base (1), a reference block (2) and a material placement block (3) for supporting an injector body (7) are connected to the material placement platform (101), and an equal height block (4) is placed on the reference block (2); the convex block (102) is provided with a mutually parallel inclined surface (103) and a cut surface (104), a step hole (105) is provided on the convex block (102) between the inclined surface (103) and the cut surface (104), one end of the step hole (105) is a smooth hole, and the other end is a threaded hole, a positioning sleeve (5) is connected to the smooth hole, a locking bolt (6) is threadedly engaged with the threaded hole, an upper end surface of the reference block (2) is flush with the center of the upper end surface of the positioning sleeve (5), and an inclination angle α of the outer end surface of the connector seat (702) of the injector body (7) is the same as an inclination angle β of the upper end surface of the positioning sleeve (5).
2. The fuel injector body size detection device according to claim 1, characterized in that: The bottom end of the material placement block (3) is connected to a screw rod, the screw rod thread is matched with the base (1), and arcs matching the valve cavity (701) of the injector body (7) are provided on both sides of the material placement block (3).
3. The fuel injector body size detection device according to claim 1, characterized in that: The reference block (2) is connected to the material placement platform (101) via a hexagon socket bolt (201).
4. The fuel injector body size detection device according to claim 3, characterized in that: The reference block (2) and the equal height block (4) are both cylindrical.
5. The fuel injector body size detection device according to claim 3, characterized in that: The positioning circular sleeve (5) is interference-fitted with the light hole end of the step hole (105), and the positioning circular sleeve (5) protrudes from the inclined surface (103).
6. The fuel injector body size detection device according to claim 4, characterized in that: The locking bolt (6) passes through the positioning circular sleeve (5) and protrudes from the upper end surface of the reference block (2).
7. The fuel injector body size detection device according to claim 6, characterized in that: The head of the locking bolt (6) is clamped on the cut surface (104).