Exhaust gear drilling tool

Abstract

The utility model discloses an exhaust gear drilling tool, which relates to the technical field of gear machining and comprises a bottom plate, and an exhaust gear tool clamp is mounted on a drilling machine through the bottom plate. The positioning mandrel is fixedly arranged on the bottom plate; the clamping mechanism is arranged on the bottom plate; wherein the clamping mechanism comprises a support, the support is fixedly arranged on the bottom plate, and a mounting hole channel is formed in the support; and the clamping assembly is arranged in the mounting hole channel in the bracket. The tool clamp is installed on a drilling machine through the bottom plate, after an exhaust gear is placed on the positioning mandrel, the exhaust gear is clamped and fixed through the clamping assembly arranged on the support, gear abrasion caused when the exhaust gear is clamped is prevented, stable clamping is achieved when the exhaust gear is drilled, and the drilling efficiency of the exhaust gear is improved. And machining errors are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining technical field especially relates to a exhaust gear drilling frock. BACKGROUND

[0002] In the processing technology of exhaust gear, drilling mark hole and misplacing hole are one of the key steps, and in the prior art, the exhaust gear needs to be clamped when drilling, but the traditional clamping method has obvious defects. When clamping, directly clamping both sides can cause tooth tip wear due to uneven clamping force, affect the machining size precision of the gear, and thus not meet the process requirements. Secondly, the traditional clamping method is not only complex in operation and low in positioning precision, but also unstable in clamping, prone to machining errors, and affects the overall performance of the gear. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of exhaust gear drilling frock to solve the shortcomings that there are in prior art, such as unstable clamping when gear drilling, prone to machining errors, affect the overall performance of the gear.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of exhaust gear drilling frock, including bottom plate, exhaust gear frock clamp is installed on drilling machine by the bottom plate;

[0006] Positioning mandrel, the positioning mandrel is fixedly arranged on the bottom plate, and the positioning mandrel is provided with positioning step at the end away from the bottom plate, and the exhaust gear is placed on the positioning mandrel by being connected with the positioning step;

[0007] Clamping mechanism, the clamping mechanism is arranged on the bottom plate, and the clamping mechanism is used to clamp and fix the exhaust gear;

[0008] Among them, the clamping mechanism includes:

[0009] Support, the support is integrally in L-shaped structure, the support is fixedly arranged on the bottom plate, and is located at one side of the positioning mandrel, and the support is provided with mounting hole in it;

[0010] Clamping assembly, the clamping assembly is arranged in the mounting hole on the support, and is movably connected with the mounting hole, and the clamping assembly is used to clamp and fix the tooth on the exhaust gear.

[0011] Further, the clamping assembly includes:

[0012] Chuck, the chuck is arranged on the support and is close to one side of the positioning mandrel, and is located at one end of the mounting hole, and the chuck is abutted with the tooth on the exhaust gear to clamp the exhaust gear.

[0013] A sliding block movably arranged in the mounting hole, the sliding block being fixedly connected with the chuck;

[0014] A cover plate arranged on the support away from the positioning mandrel, the cover plate being detachably connected with the support;

[0015] A spring arranged in the mounting hole, one end of the spring abutting against the sliding block, and the other end of the spring abutting against the cover plate.

[0016] Further, the positioning mandrel is further provided with a positioning block, the positioning block being located on the positioning mandrel away from the chuck.

[0017] Further, the support is provided with a sliding groove, and the sliding block is further provided with a limiting rod matched with the sliding groove.

[0018] Further, the support is further provided with a drill guide sleeve, the drill guide sleeve being located above the positioning mandrel and matched with a drilling position of the exhaust gear.

[0019] Further, the bottom plate is further provided with a plurality of assembly holes.

[0020] Further, the positioning mandrel is provided with a protection hole, the protection hole being matched with a position of the drill guide sleeve.

[0021] The utility model discloses the beneficial effects are:

[0022] The utility model discloses a bottom plate is arranged on the drilling machine, when the exhaust gear is placed on the positioning mandrel, the clamping assembly arranged on the support clamps and fixes the exhaust gear, prevents the gear abrasion caused when clamping the exhaust gear, realizes the stable clamping when drilling the exhaust gear, reduces the technical effect of processing error. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a kind of exhaust gear drilling tool assembly schematic diagram provided in the utility model embodiment;

[0024] Fig. 2 It is a kind of exhaust gear drilling tool structure schematic diagram provided in the utility model embodiment;

[0025] Fig. 3 It is a kind of exhaust gear drilling tool explosion structure schematic diagram provided in the utility model embodiment.

[0026] Marked in the drawing as follows:

[0027] 1, bottom plate;11, assembly hole;

[0028] 2, positioning mandrel; 21, positioning step; 22, positioning block; 23, protection hole;

[0029] 3, clamping mechanism; 31, support; 311, mounting hole; 312, sliding groove; 313, drill guide sleeve; 32, clamping assembly; 321, collet; 322, sliding block; 3221, limiting rod; 323, cover plate; 324, spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, if the present application embodiments involve "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0034] Embodiment: Reference Figs. 1-3 The utility model provides a kind of exhaust gear drilling tool, in practical application, exhaust gear tool clamp is set on bench drill, for solving the shortcoming that it cannot be effectively positioned when drilling exhaust gear, it includes: bottom plate 1, positioning mandrel 2 and clamping mechanism 3 being set on the bottom plate 1.

[0035] Need to understand is, the exhaust gear is camshaft exhaust gear after preliminary processing, and shaft hole is opened at its center, to install exhaust gear on shaft and rotate, and error-proof hole is drilled in advance on the tooth ring of exhaust gear, which is designed to improve quality control and reduce errors in the manufacturing process, to help workers better complete the work, thereby improving the accuracy and efficiency of processing technology.

[0036] Specifically, the bottom plate 1 is a planar panel structure, a plurality of assembly holes 11 are formed in the bottom plate 1, and common fixing members (such as bolts and nuts) are inserted into the assembly holes 11 to fix the bottom plate 1 to the drill. Different assembly holes 11 can adapt the bottom plate 1 to different drills, improving the adaptability. The tool clamp is installed on the drill through the bottom plate 1. The positioning mandrel 2 is a cylindrical structure adapted to the exhaust gear, which is fixedly arranged on the bottom plate 1. The positioning mandrel 2 protrudes outward at the center of the end away from the bottom plate 1, forming a positioning step 21. The positioning step 21 is adapted to the exhaust gear, i.e., the positioning step 21 is clamped with the shaft hole of the exhaust gear, so that the exhaust gear is placed on the positioning mandrel 2 without deviation. The clamping mechanism 3 is arranged on the bottom plate 1. The clamping mechanism 3 is used to clamp and fix the exhaust gear. The clamping mechanism 3 includes a bracket 31 and a clamping assembly 32 arranged in the bracket 31. Specifically, the bracket 31 is an L-shaped structure as a whole, which is fixedly arranged on the bottom plate 1 and located on one side of the positioning mandrel 2. There is a space between the bracket 31 and the positioning mandrel 2 to increase the placement space of the exhaust gear and improve the work efficiency. A through slot is formed in the bracket 31 along a direction perpendicular to the positioning mandrel 2, which is an installation channel 311. The clamping assembly 32 is arranged in the bracket 31, i.e., the clamping assembly 32 is arranged in the installation channel 311 and movably connected with the installation channel 311. The clamping assembly 32 can move in the installation channel 311 and is used to clamp and fix the exhaust gear. The installation channel 311 is adapted to the positioning mandrel 2, i.e., the height of the installation channel 311 on the bracket 31 is equal to the height of the positioning mandrel 2. After the exhaust gear is placed on the positioning mandrel 2, the clamping assembly 32 is at the same level as the exhaust gear for effective clamping.

[0037] In the embodiment, the tooling fixture is installed on the drilling machine through the bottom plate 1, and after the exhaust gear is placed on the positioning mandrel 2, the exhaust gear is clamped and fixed through the clamping assembly 32 arranged on the support 31 to prevent the gear from being abraded when the exhaust gear is clamped, so that the technical effect of stable clamping of the exhaust gear during drilling is achieved, and the processing error is reduced.

[0038] In the embodiment, the clamping assembly 32 comprises a collet 321, a sliding block 322 connected with the collet 321, a cover plate 323 connected with the fixing pin, and a spring 324. Specifically, the collet 321 is arranged on one side of the support 31 close to the positioning mandrel 2 and located at one end of the mounting channel 311. The collet 321 is arranged in a U shape, that is, one tooth top of the exhaust gear is inserted into the U-shaped opening of the collet 321 to fix and position the exhaust gear, so that the exhaust gear cannot move on the positioning mandrel 2. The sliding block 322 is arranged in the mounting channel 311 and movably connected with the mounting channel 311. One end of the sliding block 322 is fixedly connected with one end of the collet 321 away from the positioning mandrel 2, so that the collet 321 moves with the sliding block 322. The size of the sliding block 322 is matched with the mounting channel 311, so that the sliding block 322 reduces shaking or deviation when sliding in the mounting channel 311. The cover plate 323 is arranged on one end of the support 31 away from the positioning mandrel 2, and the cover plate 323 is matched with the mounting channel 311, that is, the width of the cover plate 323 is greater than the width of the mounting channel 311, so as to block one end of the mounting channel 311 to prevent the internal parts of the mounting channel 311 from falling off. The cover plate 323 is detachably connected with the support 31 to facilitate the maintenance and replacement of the internal parts. The spring 324 is arranged in the mounting channel 311, one end of which abuts against the sliding block 322, and the other end of which abuts against the cover plate 323. After the exhaust gear is placed on the positioning mandrel 2, the sliding block 322 drives the collet 321 to continuously abut against the exhaust gear through the elastic force of the spring 324. The force is directed towards the positioning mandrel 2, so that the collet 321 abuts against the exhaust gear and does not loosen, preventing the exhaust gear from moving during processing.

[0039] In some preferred embodiments, in order to further position the exhaust gear when placed on the positioning mandrel 2, a positioning block 22 is further arranged on the positioning mandrel 2, which is located at an end of the positioning mandrel 2 away from the collet 321 and is coaxial with the collet 321, and the positioning block 22 is matched with the anti-mistake hole on the exhaust gear, on one hand, when the exhaust gear is placed on the positioning mandrel 2, the positioning block 22 is inserted into the anti-mistake hole to clamp and position the exhaust gear, on the other hand, the positioning block 22 and the collet 321 position and fix the two opposite directions of the exhaust gear, further preventing the exhaust gear from rotating during machining.

[0040] In the embodiment, the bracket 31 is further provided with a sliding groove 312 parallel to the sliding block 322, that is, the sliding groove 312 is arranged on the bracket 31 along the sliding direction of the sliding block 322, and the sliding block 322 is further fixedly provided with a limiting rod 3221 matched with the sliding groove 312, the limiting rod 3221 is located in the sliding groove 312 and movably connected with the sliding groove 312, and the limiting rod 3221 and the sliding groove 312 cooperate to limit the sliding block 322, so that the sliding block 322 will not fall off from the end close to the positioning mandrel 2 due to the action force of the spring 324 when sliding in the mounting hole 311, thereby further improving the stability of the sliding block 322 when sliding in the mounting hole 311.

[0041] In the embodiment, the bracket 31 is further provided with a drill guide sleeve 313 located above the positioning mandrel 2, and the drill can advance along the predetermined path more accurately during work through the guiding action of the drill guide sleeve 313, thereby improving the accuracy and efficiency of drilling and ensuring the drilling quality.

[0042] Preferably, the positioning mandrel 2 is provided with a protection hole 23 corresponding to the position of the drill guide sleeve 313, which can avoid excessive drilling of the drill during drilling of the exhaust gear, thereby protecting the base from being damaged by drilling.

[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An exhaust gear drilling tool, characterized in that: include: A base plate (1), wherein the exhaust gear fixture is mounted on the drilling rig via the base plate (1); A positioning core shaft (2), the positioning core shaft (2) is fixedly arranged on the base plate (1), a positioning step (21) is provided at one end of the positioning core shaft (2) away from the base plate (1), and the exhaust gear is placed flat on the positioning core shaft (2) by being engaged with the positioning step (21); A clamping mechanism (3), the clamping mechanism (3) being arranged on the base plate (1), and the clamping mechanism (3) being used to clamp and fix the exhaust gear; Wherein, the clamping mechanism (3) comprises: A bracket (31), the bracket (31) is an L-shaped structure as a whole, the bracket (31) is fixedly arranged on the base plate (1) and is located on one side of the positioning core shaft (2), and a mounting hole (311) is provided in the bracket (31); A clamping assembly (32) is provided in the mounting hole (311) on the bracket (31) and is movably connected to the mounting hole (311). The clamping assembly (32) is used to clamp and fix the teeth on the exhaust gear.

2. The exhaust gear drilling tool according to claim 1, characterized in that: The clamping assembly (32) comprises: a chuck (321), the chuck (321) being arranged on a side of the bracket (31) close to the positioning core shaft (2) and located at one end of the mounting channel (311), the chuck (321) being in contact with teeth on the exhaust gear to clamp the exhaust gear; A slider (322), the slider (322) is movably disposed in the mounting hole (311), and the slider (322) is fixedly connected to the clamp (321); a cover plate (323), the cover plate (323) being arranged on an end of the bracket (31) away from the positioning core shaft (2), and the cover plate (323) and the bracket (31) being detachably connected; A spring (324) is provided in the installation channel (311), one end of the spring (324) abuts against the slider (322), and the other end abuts against the cover plate (323).

3. The exhaust gear drilling tool according to claim 2, characterized in that: A positioning block (22) is also provided on the positioning core shaft (2). The positioning block (22) is located on an end of the positioning core shaft (2) away from the chuck (321) and is on the same axis as the chuck (321).

4. The exhaust gear drilling tool according to claim 2, characterized in that: The bracket (31) is provided with a sliding groove (312), and the slider (322) is also provided with a limiting rod (3221) adapted to the sliding groove (312).

5. The exhaust gear drilling tool according to claim 1, characterized in that: A drill guide sleeve (313) is also provided on the bracket (31), and the drill guide sleeve (313) is located above the positioning core shaft (2) and is adapted to the drilling position of the exhaust gear.

6. The exhaust gear drilling tool according to claim 1, characterized in that: The bottom plate (1) is also provided with a plurality of assembly holes (11).

7. The exhaust gear drilling tool according to claim 5, characterized in that: A protection hole (23) is provided on the positioning core shaft (2), and the protection hole (23) corresponds to the position of the drill guide sleeve (313).

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