Special tool for broaching tooth profile of rack
By designing special tooling with adjustable fixtures and tooth grooves, the problem of insufficient clamping in rack processing is solved, the processing accuracy and pass rate are improved, and the stability and accuracy of rack broaching operations are ensured.
Patent Information
- Application Number
- CN202420934357.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the broaching operation in rack processing, insufficient clamping is caused by low precision and pass rate, especially the difficulty of fixing in the intermediate position, which is prone to deformation and displacement, affecting accuracy.
A special tooling including a fixture body, upper and lower pressing block, end position adjustment block, rotary guide ring, main pressure cylinder group and fine-tuning mechanism is designed. The clamping force and Accuracy.
It achieves more precise machining accuracy and clamping effect, ensures the stability and pass rate of the rack during the broking process, and reduces the risk of machining deformation and displacement.
Smart Images
Figure CN222176202U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a special tool for broaching tooth profiles of racks. Background Art
[0002] Racks are used in many places, and during the broaching operation in rack processing, it is very important to clamp the rack tightly. If there is movement during the broaching process, the rack processing will not be in place and the precision will not meet the standard. The processing of the rack needs to be broached in the middle position, which makes it difficult to clamp the tooling. Many of them are fixed from both ends, so there is a risk of deformation in the middle, and once displacement occurs, it will affect the accuracy and pass rate. Utility Model Content
[0003] The utility model mainly solves the technical problems existing in the prior art, thereby providing a special tool for broaching tooth profile of a rack, which can finely adjust the angle, has good clamping effect and is conducive to broaching operation.
[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:
[0005] The utility model discloses a special tool for rack tooth-cutting, comprising a fixture body, an upper clamping block and a lower clamping block are arranged on the front end surface of the fixture body; end position adjustment blocks are symmetrically arranged on both sides of the fixture body, and a front end positioning seat and a rear end positioning seat which can adjust the upper and lower heights are respectively arranged on the end position adjustment blocks.
[0006] Preferably, a claw retraction cylinder is provided in the clamp body; and a rotating guide ring is provided below the clamp body.
[0007] Preferably, a bottom plate is provided below the rotating guide ring.
[0008] Preferably, fixture guide rails are provided on both sides of the base plate.
[0009] Preferably, a main pressure cylinder group is provided at the rear end of the clamp body, and a cylinder piston rod is provided on the main pressure cylinder group.
[0010] Preferably, a plurality of main pressure bevel blocks are arranged at the upper end of the clamp body, and a fixed guide block is arranged between each of the main pressure bevel blocks; and a pressure claw slider is arranged below the main pressure bevel blocks.
[0011] Preferably, a clamp fine-adjustment mechanism is provided above the base plate and behind the clamp body.
[0012] Preferably, the clamp fine-tuning mechanism includes symmetrically arranged clamping blocks, a T-shaped positioning block with one end arranged in the middle of the clamping blocks and the other end extending to the rear end of the clamp body, and screws passing through the clamping blocks from both sides.
[0013] Preferably, the upper pressing block and the lower pressing block are respectively provided with toothed grooves.
[0014] Preferably, a force sensing mechanism is provided on the rear end positioning seat.
[0015] The beneficial effects of the utility model are:
[0016] By fixing the fixture body on the rotating guide ring, the fixture body can be fine-tuned according to the processing conditions, which can achieve more precise processing accuracy; and the combination of the upper and lower clamping blocks and the main pressure bevel block greatly improves the clamping effect of the tooling and ensures the clamping strength; toothed grooves are set on the upper and lower clamping blocks, which increases the clamping area and makes the broaching operation more effective. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 , 3 4 is a schematic diagram of the structure of the utility model;
[0019] Figure 2 , 6 It is an exploded schematic diagram of the utility model;
[0020] Figure 5 It is a partial exploded schematic diagram of the utility model.
[0021] In the figure: 1-base plate, 2-main pressure cylinder group, 3-clamp body, 4-end adjustment block, 5-front end positioning seat, 6-lower clamping block, 7-upper clamping block, 8-workpiece, 9-rear end positioning seat, 10-cylinder piston rod, 11-main pressure inclined block, 12-rotating guide ring, 13-pressing claw retreat cylinder, 14-screw, 15-positioning block, 16-clamping block, 17-fixed guide block, 18-pressing claw slide block, 1.1-clamp guide rail, 4.1-end positioning seat guide rail DETAILED DESCRIPTION
[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0023] like Figure 1 As shown, a special tool for rack broaching, a clamping tool for rack processing, and more specifically, a tool for clamping the rack when broaching the rack. It includes a fixture body 3, on the front end face of which an upper clamping block 7 and a lower clamping block 6 are arranged; end position adjustment blocks 4 are symmetrically arranged on both sides of the fixture body 3, and the end position adjustment blocks 4 are respectively provided with a front end positioning seat 5 and a rear end positioning seat 9 with adjustable upper and lower heights for clamping the two ends of a workpiece 8 (that is, the rack), and the upper clamping block 7 and the lower clamping block 6 clamp the workpiece 8 from the middle, so that not only the two ends of the workpiece 8 are fixed respectively, but also the middle position is tightened by the upper and lower clamping blocks, ensuring that the workpiece 8 will not be offset during processing, greatly improving a clamping force.
[0024] See also Figure 5 As shown, a claw retracting cylinder 13 is provided in the clamp body 3 ; a rotating guide ring 12 is provided below the clamp body 3 ; specifically, the clamp body 3 is fixed on the rotating guide ring 12 and can rotate along with the rotating guide ring 12 .
[0025] A bottom plate 1 is disposed below the rotating guide ring 12 ; specifically, the rotating guide ring 12 is rotatably fixed on the bottom plate 1 , and then the clamp body 3 is fixed on the rotating guide ring 12 .
[0026] Clamp guide rails 1.1 are provided on both sides of the base plate 1; specifically, the clamp body 3 is fixed on the rotating guide ring 12, and then bolts are fastened to the clamp guide rails 1.1 on both sides, so that when the clamp body 3 is rotated to a suitable angle, the clamp body 3 and the rotating guide ring 12 can be fixed by fastening with bolts.
[0027] See also Figure 1-2 As shown, a main pressure cylinder group 2 is provided at the rear end of the clamp body 3, and a cylinder piston rod 10 is provided on the main pressure cylinder group 2.
[0028] A plurality of main pressing and tilting blocks 11 are arranged at the upper end of the clamp body 3 , and a fixed guide block 17 is arranged between each of the main pressing and tilting blocks 11 ; a pressing claw slider 18 is arranged below the main pressing and tilting blocks 11 .
[0029] See also Figure 5 As shown, one end of the oil cylinder piston rod 10 extends into the main pressure bevel block 11.
[0030] See also Figure 6As shown, a clamp fine-adjustment mechanism is provided above the base plate 1 and behind the clamp body 3 .
[0031] The clamp fine-tuning mechanism includes symmetrically arranged clamping blocks 16, a T-shaped positioning block 15 with one end arranged in the middle of the clamping block 16 and the other end extending to the rear end of the clamp body 3, and screws 14 respectively penetrating the clamping blocks 16 from both sides; specifically, after the clamp body 3 is adjusted to a good angle, the screws 14 are tightened from both sides to fix one end of the positioning block 15 to the clamping block 16, so that a tightening force can be applied to the clamp body 3 from the rear.
[0032] The end position adjustment block 4 is provided with an end positioning seat guide rail 4.1; specifically, the front end positioning seat 5 and the rear end positioning seat 9 are respectively clamped on the end positioning seat guide rail 4.1 and can move up and down along the end positioning seat guide rail 4.1.
[0033] The upper clamping block 7 and the lower clamping block 6 are respectively provided with tooth-shaped grooves (not marked), so that when the workpiece 8 is subjected to tooth-broaching operation after clamping, the planes of the upper and lower clamping blocks are prevented from obstructing the processing, which not only increases the clamping area but also facilitates the broaching operation.
[0034] The rear end positioning seat 9 is provided with a force sensing mechanism (not shown); it should be noted here that the force sensing mechanism is a prior art, and the applicant merely installed an existing force sensing mechanism on the rear end positioning seat 9, so the applicant does not provide further detailed description of the force sensing mechanism here.
[0035] The beneficial effects of the utility model are:
[0036] By fixing the fixture body on the rotating guide ring, the fixture body can be fine-tuned according to the processing conditions, which can achieve more precise processing accuracy; and the combination of the upper and lower clamping blocks and the main pressure bevel block greatly improves the clamping effect of the tooling and ensures the clamping strength; toothed grooves are set on the upper and lower clamping blocks, which increases the clamping area and makes the broaching operation more effective.
[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A special tool for broaching the tooth profile of a rack, characterized by: The clamp body (3) comprises an upper clamping block (7) and a lower clamping block (6) arranged on the front end surface of the clamp body (3); end position adjustment blocks (4) are symmetrically arranged on both sides of the clamp body (3); and a front end positioning seat (5) and a rear end positioning seat (9) which can adjust the upper and lower heights are respectively arranged on the end position adjustment blocks (4).
2. The special tool for broaching the tooth profile of a rack according to claim 1, characterized in that: A claw retracting oil cylinder (13) is arranged inside the clamp body (3); and a rotating guide ring (12) is arranged below the clamp body (3).
3. The special tool for broaching the tooth profile of a rack according to claim 2, characterized in that: A bottom plate (1) is arranged below the rotating guide ring (12).
4. The special tool for broaching tooth profile of a rack according to claim 3, characterized in that: Clamp guide rails (1.1) are arranged on both sides of the base plate (1).
5. The special tool for broaching tooth profile of a rack according to claim 1, characterized in that: A main pressure oil cylinder group (2) is arranged at the rear end of the clamp body (3), and an oil cylinder piston rod (10) is arranged on the main pressure oil cylinder group (2).
6. The special tool for broaching the tooth profile of a rack according to claim 5, characterized in that: A plurality of main pressure blocks (11) are arranged at the upper end of the clamp body (3), and a fixed guide block (17) is arranged between each of the main pressure blocks (11); and a pressure claw slider (18) is arranged below the main pressure blocks (11).
7. The special tool for broaching the tooth profile of a rack according to claim 4, characterized in that: A clamp fine-adjustment mechanism is provided above the base plate (1) and behind the clamp body (3).
8. The special tool for broaching the tooth profile of a rack according to claim 7, characterized in that: The clamp fine-adjustment mechanism comprises symmetrically arranged clamping blocks (16), a T-shaped positioning block (15) with one end arranged in the middle of the clamping blocks (16) and the other end extending to the rear end of the clamp body (3), and screws (14) respectively penetrating the clamping blocks (16) from both sides.
9. The special tool for broaching tooth profile of a rack according to claim 1, characterized in that: The upper pressing block (7) and the lower pressing block (6) are respectively provided with tooth-shaped grooves.
10. The special tool for broaching tooth profile of a rack according to claim 1, characterized in that: The rear end positioning seat (9) is provided with a force sensing mechanism.