Honing tool, honing machine and honing method for discontinuous holes

Abstract

The invention belongs to the technical field of honing, and particularly relates to a honing tool, a honing machine and a honing method for discontinuous holes. A honing cutter for intermittent holes comprises an upper supporting body, a cutter head body and a lower supporting body which are sequentially fixed together, the cutter head body comprises a plurality of supporting frames arranged in a radial mode, a cutter frame capable of adjusting the position or posture is arranged in the space between every two adjacent supporting frames, and honing cutters are fixed to the cutter frames. Compared with the prior art, the honing tool has the technical effects that the honing tool is provided with the lower supporting body, after a first hole is machined, when the tool bit body needs to move downwards, one part of the lower supporting body penetrates into an unmachined hole all the time, the tool bit body is guided, and machining of discontinuous holes is as convenient as machining of continuous holes.

Description

Technical Field

[0001] The invention belongs to the technical field of honing, and particularly relates to a honing tool for intermittent holes, a honing machine and a honing method. Background Art

[0002] Honing is the main method for finishing the inner holes of parts in the manufacturing industry, and honing machines are also commonly used equipment in the field of modern machinery. The honing head is used to finish the surface of the workpiece. Under certain conditions, planes, cylindrical surfaces, spherical surfaces, tooth surfaces, etc. can also be processed. However, after the current equipment is operated under high load, the feed mechanism is severely worn, and the working platform is not accurately positioned, resulting in low processing accuracy during the honing process. In order to solve the problems existing in the existing technology, people have conducted long-term exploration and proposed a variety of solutions.

[0003] Vertical honing machines are now available, such as Chinese patent documents CN206123414U and CN118559597A.

[0004] Technical defects are: Figure 7 There are intermittent holes on the existing workpiece 90 (intermittent holes are multiple discontinuous holes 91 with overlapping axes). The front end of the existing honing tool is a cutter head. If this type of honing tool is used to process intermittent holes, after the first hole 91 is processed, the cutter head needs to move downward. At this time, the cutter head has no radial support (constraint or guide), and the axis of the honing tool may deviate, resulting in a decrease in processing accuracy. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to design a honing tool for intermittent holes to facilitate the processing of intermittent holes.

[0006] The technical solution of the present invention is specifically as follows: A honing tool for intermittent holes comprises an upper support body, a tool head body and a lower support body fixed together in sequence. The tool head body comprises a plurality of radially arranged support frames. A tool holder capable of adjusting position or posture is provided in the space between two adjacent support frames, and a honing tool is fixed on the tool holder.

[0007] A pneumatic measuring hole is provided on one of the support frames.

[0008] The pneumatic measuring hole is arranged at the middle position of the support frame in the up-down direction.

[0009] A honing machine, the lower end of the main shaft of which is fixed with the above-mentioned intermittent hole honing tool, the air path connecting the pneumatic measuring hole with the high-pressure air source comprises an air guide mechanism, and the high-pressure air source is fixed on the base.

[0010] A honing method, characterized in that: using the above-mentioned honing machine, comprising the following steps: S1. Fix the workpiece, align the honing tool with the intermittent hole, and move the honing tool downward so that the lower support body reaches the target hole; At the beginning, the target hole is the first hole at the top; S2, the honing tool continues to move downward, the tool head body reaches the target hole, and the lower support body reaches the adjacent hole below the target hole, unless the target hole is the last hole; The adjacent hole is the first hole below the target hole; S3, honing the target hole; After steps S4 and S3, the air volume of the pneumatic measuring hole is used to determine whether the processing accuracy of step S3 meets the standard. If "Y", proceed to step S5; if "N", proceed to step S3 to continue processing; S5, determine whether the processing is completed, if "Y" go to step S6; if "N" go to step S2; S6. End.

[0011] Compared with the prior art, the technical effect of the present invention is that the honing tool of the present invention is provided with a lower support body. After the first hole is processed and the cutter head body needs to move downward, a part of the lower support body is always passed through the unprocessed hole to guide the cutter head body, so that the processing of intermittent holes is as convenient as that of continuous holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the honing machine of the present invention.

[0013] Figure 2 It is a left schematic diagram of the honing machine of the present invention.

[0014] Figure 3 It is a top view schematic diagram of the honing machine of the present invention.

[0015] Figure 4 It is a three-dimensional schematic diagram of the honing machine of the present invention.

[0016] Figure 5 It is an enlarged schematic diagram of the honing tool of the present invention.

[0017] Figure 6 It is a schematic diagram of the use state of the honing tool of the present invention.

[0018] Figure 7 It is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0020] like Figure 1-4A honing machine comprises a base 1, the base 1 is provided with a workpiece translation mechanism 2, the translation mechanism 2 is used to move the position of the workpiece, a Z-axis track 3 is fixed on the base, a spindle box 8 is provided on the Z-axis track 3 and can slide along the spindle box 8, the spindle box 8 is connected to a driving Z-axis motor for providing power therefor, a rotating spindle is provided on the spindle box 8, the rotating spindle is connected to a rotating motor 10, the rotating motor 10 is fixed on the spindle box 8, and provides power for the rotation of the rotating spindle.

[0021] The rotating spindle is fixedly connected to the honing connecting rod 6, the lower end of the honing connecting rod 6 is fixed to the honing tool 5, and the upper end of the honing connecting rod 6 is connected to the knife-raising motor 9. The output shaft of the knife-raising motor 9 is connected to the tool holder (located on the honing tool 5 and used to install the honing knife / grinding strip) through a connecting rod mechanism (located inside the honing connecting rod 6), and the knife-raising motor 9 is used to adjust the position of the honing knife / grinding strip.

[0022] For this part of the content, please refer to the CN112428134B patent document.

[0023] For the convenience of control, the Z-axis motor, the rotating motor 10 , and the knife-increasing motor 9 are all electrically connected to the controller 4 .

[0024] In order to improve the overall appearance of the machine tool, a fence mechanism 11 is fixed on the upper part of the base 1 .

[0025] like Figure 5-6 The honing tool 5 includes an upper support body 51, a cutter head body 52, and a lower support body 53 fixed together in sequence. The cutter head body 52 includes a plurality of radially arranged support frames 55. The space between two adjacent support frames 55 is provided with a tool holder capable of adjusting position or posture, and a honing tool (also called a grinding bar) is fixed on the tool holder.

[0026] In order to facilitate the detection of machining accuracy, a pneumatic measuring hole 54 is provided on one of the support frames 55 . The pneumatic measuring hole 54 is connected to the high-pressure gas source 12 through an air circuit. The air circuit includes an air guide mechanism 7 . The high-pressure gas source 12 is fixed to the base 1 .

[0027] For this part of the content, please refer to the CN118559597A patent document.

[0028] In order to reduce the vertical movement, the pneumatic measuring hole 54 is provided at the middle position of the support frame 55 in the vertical direction.

[0029] like Figure 5-6 , its working principle includes the following steps: S1. Fix the workpiece 90, align the honing tool 5 with the intermittent hole, and move the honing tool 5 downward to make the lower support body 53 reach the target hole.

[0030] Initially, the target hole is the first hole 91 at the top.

[0031] S2, the honing tool 5 continues to move downward, the tool head body 52 reaches the target hole, and the lower support body 53 reaches the adjacent hole below the target hole, unless the target hole is the last hole.

[0032] The adjacent hole is the first hole below the target hole.

[0033] S3. Perform honing operation on the target hole.

[0034] After steps S4 and S3, the air volume of the pneumatic measuring hole 54 is used to determine whether the processing accuracy of step S3 meets the standard. If "Y", go to step S5; if "N", go to step S3 to continue processing.

[0035] The main purpose of the precision detection in this step is: if the processing accuracy does not meet the standard, it means that the axis of the honing tool 5 may deviate greatly, because the two holes are not continuous, when it processes the next hole, it may keep this axis unchanged and enter the next hole, causing the processing error of the next hole to be further amplified. For this reason, one hole needs to be processed and tested.

[0036] Similarly, this is also the reason why the pneumatic measuring hole 54 is set on the tool head body 52. ​​The honing tool and the pneumatic measuring hole 54 are located at the same vertical position, and the detection can be achieved by moving the honing tool 5 less up and down.

[0037] S5. Determine whether the processing is completed. If "Y", go to step S6; if "N", go to step S2.

[0038] S6. End.

[0039] For other contents, please refer to the prior art.

[0040] The above description is only the preferred implementation mode of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the protection scope of the present invention.

Claims

1. A honing tool for intermittent holes, characterized in that: The invention comprises an upper support body (51), a cutter head body (52), and a lower support body (53) which are fixed together in sequence. The cutter head body (52) comprises a plurality of radially arranged support frames (55). A cutter holder capable of adjusting position or posture is provided in the space between two adjacent support frames (55). A honing cutter is fixed on the cutter holder.

2. The intermittent hole honing tool according to claim 1, characterized in that: A pneumatic measuring hole (54) is provided on one of the support frames (55).

3. The intermittent hole honing tool according to claim 2, characterized in that: The pneumatic measuring hole (54) is provided at a middle position in the vertical direction of the support frame (55).

4. A honing machine, characterized in that: The lower end of the main shaft is fixed with the intermittent hole honing tool as claimed in claim 1, and the air path connecting the pneumatic measuring hole (54) and the high-pressure air source (12) includes an air guide mechanism (7), and the high-pressure air source (12) is fixed on the base (1).

5. A honing method, characterized in that: Using the honing machine as claimed in claim 4 comprises the following steps: S1, fix the workpiece (90), align the honing tool (5) with the intermittent hole, move the honing tool (5) downward, and make the lower support body (53) reach the target hole; Initially, the target hole is the first hole at the top (91); S2, the honing tool (5) continues to move downward, the tool head body (52) reaches the target hole, and the lower support body (53) reaches the adjacent hole below the target hole, unless the target hole is the last hole; The adjacent hole is the first hole below the target hole; S3, honing the target hole; After steps S4 and S3, the air volume of the pneumatic measuring hole (54) is used to determine whether the processing accuracy of step S3 meets the standard. If "Y", the process proceeds to step S5; if "N", the process proceeds to step S3 to continue processing. S5, determine whether the processing is completed, if "Y" go to step S6; if "N" go to step S2; S6. End.

Images