Indexing drilling tool

Abstract

The utility model discloses an indexing drilling tool which comprises a tool body, a mandrel is arranged in the center of the tool body, one end of the mandrel is flush with the end of the tool body and is fixed to the tool body through a base plate and a fixing bolt, and the other end of the mandrel penetrates out of the tool body and is fixedly sleeved with an indexing plate coaxial with the mandrel. A positioning mechanism is arranged on one side of the index plate and fixedly connected with the tool body, a fixing base coaxial with the index plate is further formed on the side, away from the tool body, of the index plate on the mandrel, and the end, close to the fixing base, of the mandrel is a small end and provided with a pressing plate matched with the small end. And a locking hole and a locking bolt which are matched with the pressing plate are formed in the center of the end part of the small end of the mandrel. The device is suitable for uniform distribution machining or non-uniform distribution machining of outer circle machining of disc type parts or short shaft type parts, the outer circle machining efficiency can be effectively improved through the index plate, and meanwhile the production cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a indexing drilling tooling. Background Art

[0002] At present, for the machining of the outer circle of disc parts or short shaft parts, such as drilling, tapping, milling, etc., during the machining process, the parts need to be clamped, measured, aligned and other auxiliary operations for many times to perform uniform or non-uniform machining on the outer circle of the parts, which is time-consuming and laborious. If precision numerical control equipment is used for machining, although the accuracy of the machining position can be satisfied, the machining cost is relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a indexing drilling tooling aiming at the deficiencies of the above-mentioned prior art. After one-time clamping, it can perform uniform or non-uniform machining corresponding to the outer circle machining position, effectively improving the machining efficiency and saving the production cost.

[0004] The technical solution adopted by the utility model is: a indexing drilling tooling, including a tooling body and a base plate installed at the bottom of the tooling body. A through hole penetrating both ends along the length direction is opened at the center of the tooling body. A mandrel with a clearance fit with the through hole is arranged in the through hole. One end of the mandrel is flush with the end of the tooling body and is fixed to the tooling body through a backing plate and a fixing bolt. The other end of the mandrel penetrates the tooling body and is fixedly sleeved with a indexing disc coaxially arranged therewith. A positioning mechanism is arranged on one side of the indexing disc, and the positioning mechanism is fixedly connected with the tooling body. A fixing seat coaxially arranged with the indexing disc is also formed on the mandrel on the side far from the tooling body of the indexing disc. The end of the mandrel close to the fixing seat is a small end, and a pressing plate matched therewith is provided. A locking hole and a locking bolt matched with the pressing plate are opened at the center of the end of the small end of the mandrel.

[0005] Preferably, several tooth grooves are formed on the outer circle of the indexing disc, and the several tooth grooves form distribution angles of 60°, 90° and 120°.

[0006] Preferably, the positioning mechanism includes a fixed sleeve. A positioning pin slidably matched with the fixed sleeve is arranged in the fixed sleeve. One end of the positioning pin extends out of the fixed sleeve and matches with the tooth groove, and a spring is sleeved between the other end and the inner end face of the fixed sleeve.

[0007] Preferably, a pressing hole perpendicular to the through hole is also opened at the top of the tooling body, and a pressing bolt matched therewith is arranged in the pressing hole.

[0008] The beneficial effect of the utility model is that the utility model is applicable to the uniform or non-uniform machining of the outer circle of disc parts or short shaft parts. Through the indexing disc, the efficiency of outer circle machining can be effectively improved, and at the same time, the production cost is saved. Brief Description of the Drawings

[0009] Figure 1 is a schematic structural view of the present utility model;

[0010] Figure 2 is a front view of the present utility model.

[0011] In the figure: 1, tooling body; 2, bottom plate; 3, mandrel; 4, backing plate; 5, indexing plate; 6, fixed seat; 7, locking hole; 8, tooth groove; 9, fixed sleeve; 10, positioning pin; 11, spring; 12, pressing hole. Specific embodiments

[0012] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Embodiment

[0014] As Figure 1 and Figure 2 shown, the indexing drilling tooling provided in this embodiment includes a tooling body 1 and a bottom plate 2 installed at the bottom of the tooling body 1. A through hole penetrating both ends along the length direction is opened at the center of the tooling body 1. A mandrel 3 that is in clearance fit with the through hole is arranged in the through hole. One end of the mandrel 3 is flush with the end of the tooling body 1, and a backing plate 4 coaxial with it is arranged outside the end. Connecting holes are opened in the backing plate 4 and the end of the mandrel 3, and they are locked and fixed by bolts;

[0015] The other end of the mandrel 3 is a small end and penetrates through the tooling body 1. An indexing plate 5 coaxial with the mandrel 3 is fixedly sleeved on the mandrel 3 near the tooling body 1. Several tooth grooves 8 are formed on the outer circle of the indexing plate 5. For the convenience of explanation, one of the tooth grooves 8 is defined as the first tooth groove 8 in the embodiment, and the circular angular separation of the remaining tooth grooves 8 from the first tooth groove 8 is 60°, 90°, 120°, and 180° respectively; A fixed seat 6 is formed on the mandrel 3 near the indexing plate 5 for positioning and fixing the part to be processed. The small end of the mandrel 3 is equipped with a pressing plate and a locking bolt matching with it, and a locking hole 7 is opened at the small end; A fixed sleeve 9 is fixedly installed at the corresponding position of the tooling body 1 on one side of the indexing plate 5. A positioning pin 10 that is slidably matched with it is arranged in the fixed sleeve 9. One end of the positioning pin 10 extends out of the fixed sleeve 9 and inserts into the tooth groove 8, and a spring 11 is sleeved between the other end and the inner end face of the fixed sleeve 9;

[0016] A pressing hole 12 perpendicular to the through hole is also opened at the top of the tooling body 1, and a pressing bolt matching with it is arranged in the pressing hole 12.

[0017] In use, the part to be processed is positioned and fixed on the fixed seat 6. After the part is pressed by the pressing plate, it is locked and fixed by the locking bolt and the locking hole 7. At this time, the positioning pin 10 is inserted into a tooth groove 8 of the indexing plate 5. The mandrel 3 is locked with the tooling body 1 through the pressing bolt at the pressing hole 12 and the fixing bolt at the end of the mandrel 3; after locking, the side holes of the outer circle of the workpiece are machined. After the machining is completed, the pressing bolt and the fixing bolt are loosened. Since the mandrel 3 and the tooling body 1 are in clearance fit, after the pressing bolt and the fixing bolt are loosened, and then the positioning pin 10 is pulled out of the tooth groove 8, the mandrel 3 can rotate within the tooling body 1. After rotating the mandrel 3 until the indexing plate 5 reaches the tooth groove 8 corresponding to the circular angular division, the positioning pin 10 is loosened. Under the action of the spring 11, the positioning pin 10 rebounds and inserts into the rotated tooth groove 8. Since the part to be processed and the indexing plate 5 are both fixedly installed on the mandrel 3, their rotation angles are the same, thus realizing multiple machining of the outer circle after the part is clamped once; then the mandrel 3 is locked and fixed with the tooling body 1 again through the pressing bolt and the fixing bolt, and the machining is carried out again.

[0018] The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solution and the inventive concept provided by the present invention should be covered by the protection scope of the present invention.

Claims

1. A graduated drilling tool, characterized in that: The invention comprises a tool body (1) and a bottom plate (2) installed at the bottom of the tool body (1), wherein a through hole is opened at the center of the tool body (1) along its length direction and passes through both ends thereof, and a core shaft (3) is arranged in the through hole and matches with the clearance of the through hole, and one end of the core shaft (3) is flush with the end of the tool body (1) and is fixed to the tool body (1) by a pad (4) and a fixing bolt, and the other end of the core shaft (3) passes through the tool body (1) and is fixedly sleeved with a dividing plate (5) arranged coaxially therewith, and a positioning mechanism is provided on one side of the dividing plate (5), and the positioning mechanism is fixedly connected to the tool body (1), and a fixing seat (6) coaxial with the dividing plate (5) is also formed on the side of the dividing plate (5) on the core shaft (3) away from the tool body (1), and the end of the core shaft (3) close to the fixing seat (6) is a small end and is provided with a pressure plate matched with it, and a locking hole (7) and a locking bolt matching with the pressure plate are opened in the center of the small end of the core shaft (3).

2. The indexing drilling tool according to claim 1, characterized in that: The dividing plate (5) is formed with a plurality of tooth grooves (8) on its outer circle, and the plurality of tooth grooves (8) form distribution angles of 60°, 90° and 120°.

3. The indexing drilling tool according to claim 1, characterized in that: The positioning mechanism comprises a fixed sleeve (9), wherein a positioning pin (10) is provided in the fixed sleeve (9) and is slidably matched with the fixed sleeve (9), one end of the positioning pin (10) extends out of the fixed sleeve (9) and matches with the tooth groove (8), and a spring (11) is sleeved between the other end and the inner end surface of the fixed sleeve (9).

4. The indexing drilling tool according to claim 1, characterized in that: The top of the tool body (1) is also provided with a clamping hole (12) perpendicular to the through hole, and a clamping bolt matching the clamping hole (12) is arranged in the clamping hole (12).

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