1275697 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種用於道路鑽削機或此類機械的刀座， 它包括一基礎部分，該基礎部分具有保持部分，其中該保 持部分具有刀具承接部分，在刀座的刀具進給方向上保持 部分之前，一凸起與基礎部分連接。 【先前技術】 φ DE4322401C2公開了這種類型的刀座。其刀座具有 一***部分’通過該***部分其刀座可更換地保持在基體 的***承接部分中。其基體固定在鑽削輥管的外周上。刀 座的***部分與一基礎部分一體連接。其基礎部分在遠離 、 ***部分的一側具有一保持部分。其保持部分具有孔，在 其孔中以公知的方式安裝柄式刀具。例如D E 3 7 0 1 9 0 5 C 1 示意示出了可能的安裝情況。 其刀座的保持部分具有一缸形部分，在其上形成由槽 φ 形凹痕形成的環繞磨損標記。在刀具進給方向上保持部分 之則的區域’其基礎部分具有呈圍裙形的凸起，它覆蓋基 體的一表面，***部分的***承接部分引入該表面中。由 此，保護基體的該區域。在先前技術中還公開了一種刀座 ’它不需要基體直接固定在鑽削輥管上。 '上述刀座可以用於道路鑽削機上，但也可以用於同類 ，的地切削機上’如地面穩定器、採礦機上等。機械的動力 消耗根據要切削下土層的特性改變。這表明，在分離時易 於形成塊形屑的在層中形成的片中，刀具要克服的阻力很 1275697 大。例如，在分開瀝青面時產生上述的屑形狀，其中在覆 蓋層（最多約4cm厚）和接合層之間形成不令人滿意的黏合。 ^ 【發明內容】 / 本發明的目的在於提供上述類型的刀座，改善道路鑽 削機或此類機械的切削效果。 本發明的目的是這樣實現的，基礎部分具有由斷屑件 形成的連接部分，連接部分在基礎部分上形成並從保持部 分至少部分地經凸起延伸。 ^ 通過斷屑件有效分離產生的屑特別是大的地塊。由此 ，減小鑽削物反作用於刀座的切削阻力，而減小動力消耗 這樣可以提高機械效率。 另外表明，保持部分借助連接部分與其凸起連接提高 了刀具的剛度。這特別對於顯露的保持部分和/或凸起會產 生積極作用，提高壽命。 根據本發明的一較佳實施方式，其連接部分在刀具進 給方向延伸。這樣產生之切削形狀會減小鑽削物反作用的 推入阻力。 本發明的一變型這樣構成，其連接部分形成橋接部分 ，保持部分具有突出於基礎部分的端部分’垂直於進給方 向之橋接寬度小於在該方向上的端部分之尺寸° 本發明之另一變型的特徵是，其保持部分之端部分具 有由孔構成的刀具承接部分，端部分具有環繞刀具承接部 分中縱向軸的環形支承面，其支承面徑向向外地延伸到端 1275697 部分缸形區域的尺寸邊緣，連接部分在軸向相對於支承面 過渡連接到保持部分上。保持部分之缸形區域形成基本類 似於D E 1 9 9 0 2 7 6 6 · 8 - 2 4所述的磨損區域。該文獻所公開 之內容與本申請的主題相關。 柄桿刀具之刀頭通過磨損保護盤的中間支承部分支承 在環形支承面上。磨損保護盤至少延伸到支承面的尺寸邊 緣。由此’形成磨損系統。在刀具工作時，磨損保護盤在 其支承面上轉動並連續磨損其缸形區域。通過過渡設置的 連接部分，穩定其保持部分’而且不會對其磨損系統產生 影響。 爲了連續可靠地排屑，根據本發明，連接部分在橋接 部分兩側具有排屑面，它從橋接部分朝著基礎部分的方向 發散’連接部分通過內角倒圓形過渡部分與保持部分連接 〇 這樣優化刀座的切削形狀，基礎部分在凸起兩側區域 由兩傾斜面限定，它們在刀具進給方向彼此呈箭頭形設置 ’其連接部分和傾斜面在凸起的前側端區域結束。前側端 區域形成漸小的部分，這特別對於粗屑鑽削下層土可以良 好排屑。 這樣使得刀座的壽命到達最佳，連接部分被硬化和/或 在連接部分上至少塗覆硬質材料。其硬質材料例如使用硬 質金屬。 這樣形成斷屑形狀’即連接部分具有錐形或圓形切削 刃形狀。 1275697 【實施方式】 第1圖顯示具有基礎部分1 〇的刀座。該基礎部分j 〇 包括具有向下之支承面1 1的支承部分。該支承部分沿進給 方向過渡到凸起1 5。該凸起1 5與支承部分呈角度設置。 在從其支承部分到凸起1 5的過渡區域，在基礎部分 1 0上形成向下突出的***部分1 2。通過該***部分1 2， 其刀座***到基體5 0的***承接部分中。在該***承接部 分中夾緊***部分12。 前側之對中面1 3以及第2圖示出的***部分1 2之後 側的夾緊面1 2 . 1起支承作用。在安裝狀態，刀座之支承面 11支承在基體50的相對面上。凸起15遮蓋基體50之凸 緣5 1並防止去除的鑽削物磨損它。在刀座基礎部分1 〇的 連接部分3 5上形成保持部分3 0。其連接部分3 5還可以具 有截錐形狀或內角倒圓形狀。在遠離連接部分3 5 —端，保 持部分3 0在突出缸形端部分34上結束。在該端部分34上 車削出兩磨損標記3 4 · 1，它們對中地環繞在保持部分3 0 中形成的孔（刀具承接部分3 1 )。磨損標記34· 1形成槽形凹 痕，它們設置在缸形端部分3 4結束的支承面3 3之後。 如第3圖所示，具有柄桿部分的圓柄刀具4 0裝入刀具 承接部分3 1中。圓柄刀具具有與柄桿部分的刀頭4 1，該 刀頭4 1具有硬質材料製成的刀尖。刀頭4 1通過磨損保護 盤42的中間支承部分支承在保持部分3 0的支承面3 3上。 從第2圖中可以清楚看到’保持邰分3 0在缸形端部分 3 4和連接部分3 5之間形成中部連接部分3 4 · 2，它借助連 1275697 接部分20與凸起15連成一體。 其連接部分20從連接部分34.2在刀具進給方向延伸 ‘ ，它具有扁平的橋接部分2 1，該扁平橋接部分2 1經傾斜 : 的排屑面22過渡到凸起1 5的側面1 9。連接部分20連續 地在朝向凸起1 5前側端區域的方向伸出。 側向限定凸起1 5的兩傾斜面1 4同樣在該區域輸出’ 由此，通過連接部分2 0和傾斜面1 4形成箭頭形結構。 凸起1 5在端區域借助連接過渡部分1 6終結。傾斜面 ^ 1 4經倒角過渡部分1 7與側面1 9連接。基於最佳夾緊和改 善排屑考慮，連接部分2 0通過倒角過渡部分1 8、2 3與保 持部分3 0連接。 【圖式簡單說明】 、 第1圖顯示刀座的透視前視圖； 第2圖顯示第1圖刀座的側視圖； 第3圖顯示刀具組合的側視圖，它具有第1圖和第2 圖所示的刀座以及基體和安裝在刀座中的圓柄刀。 【主要元件符號說明】 10 基礎部分 11 支承面 12 ***部分 12.1 夾緊面 13 對中面 14 傾斜面 15 凸起 -9- 1275697BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool holder for a road drilling machine or the like, which comprises a base portion having a holding portion, wherein the holding portion has a cutter The receiving portion is connected to the base portion before the portion is held in the tool feeding direction of the holder. [Prior Art] This type of tool holder is disclosed in φ DE4322401C2. The holder has an insertion portion by which the holder is replaceably held in the insertion receiving portion of the base. The base body is fixed to the outer circumference of the drilling roller tube. The insertion portion of the holder is integrally connected to a base portion. The base portion has a holding portion on a side away from the insertion portion. The retaining portion has a hole in which the shank cutter is mounted in a known manner. For example, D E 3 7 0 1 9 0 5 C 1 shows a possible installation situation. The retaining portion of the holder has a cylinder-shaped portion on which a circumferential wear mark formed by a groove φ-shaped indentation is formed. The portion of the portion which retains a portion in the direction in which the cutter is fed has a projection having a skirt shape covering a surface of the base into which the insertion receiving portion of the insertion portion is introduced. Thereby, this area of the substrate is protected. Also disclosed in the prior art is a knife holder which does not require the base to be directly attached to the drill roller. 'The above-mentioned tool holder can be used on road drilling machines, but it can also be used on ground cutting machines of the same kind, such as ground stabilizers, mining machines, etc. The mechanical power consumption varies depending on the characteristics of the soil layer to be cut. This indicates that the resistance to be overcome by the tool is very large at 1275697 in the sheet formed in the layer which is easy to form a block of chips during separation. For example, the above-described chip shape is produced when the asphalt face is separated, in which an unsatisfactory bond is formed between the cover layer (up to about 4 cm thick) and the joint layer. ^ SUMMARY OF THE INVENTION / It is an object of the present invention to provide a tool holder of the above type which improves the cutting effect of a road drill or such machine. The object of the invention is achieved in that the base portion has a connecting portion formed by the chip breaking member, the connecting portion being formed on the base portion and extending at least partially through the projection from the retaining portion. ^ The chips produced by the effective separation of the chip breaking parts are especially large blocks. Thereby, the cutting resistance of the drill object against the seat is reduced, and the power consumption is reduced, which can improve the mechanical efficiency. It has also been shown that the holding portion is connected to its projection by means of the connecting portion to increase the rigidity of the tool. This has a positive effect on the exposed retaining portion and/or the bulge, which increases the life. According to a preferred embodiment of the invention, the connecting portion extends in the tool feed direction. The resulting cutting shape reduces the pushing resistance of the drill's reaction. A variant of the invention is constructed such that the connecting portion forms a bridging portion, the retaining portion having an end portion that protrudes from the base portion, the bridging width perpendicular to the feeding direction being smaller than the dimension of the end portion in the direction. A variant is characterized in that the end portion of the retaining portion has a tool receiving portion formed by a hole, the end portion having an annular bearing surface surrounding the longitudinal axis of the tool receiving portion, the bearing surface extending radially outwardly to the end 1275697 portion of the cylinder region The size edge, the connecting portion is axially connected to the retaining portion in relation to the bearing surface. The cylinder-shaped region of the retaining portion forms a wear region substantially similar to that described in D E 1 9 9 0 2 7 6 6 8 - 2 4 . The disclosure of this document is related to the subject matter of the present application. The cutter head of the shank cutter is supported on the annular support surface by the intermediate support portion of the wear protection disc. The wear protection disk extends at least to the size edge of the support surface. This creates a wear system. When the tool is in operation, the wear protection disk rotates on its support surface and continuously wears its cylinder-shaped area. By the transitional connection portion, the retaining portion is stabilized and does not affect its wear system. In order to continuously and reliably chip the chips, according to the invention, the connecting portion has a chip evacuating surface on both sides of the bridging portion, which diverges from the bridging portion toward the base portion. The connecting portion is connected to the retaining portion through the inner corner rounded transition portion. In this way, the cutting shape of the seat is optimized, the base portion being defined by the two inclined faces in the region on both sides of the projection, which are arranged in an arrow shape in the tool feed direction, the connecting portion and the inclined surface ending in the convex front end region. The front side end region forms a gradually smaller portion, which is particularly good for chip removal of the coarse soil. This optimizes the life of the tool holder, the joint portion is hardened and/or at least the hard material is applied to the joint portion. For its hard material, for example, a hard metal is used. This forms a chip breaking shape', i.e., the connecting portion has a tapered or circular cutting edge shape. 1275697 [Embodiment] Fig. 1 shows a holder having a base portion 1 〇. The base portion j 包括 includes a support portion having a downward bearing surface 11 . The support portion transitions to the projection 15 in the feed direction. The projection 15 is disposed at an angle to the support portion. In the transition region from its support portion to the projection 15, a downwardly projecting insertion portion 12 is formed on the base portion 10. Through the insertion portion 12, the holder is inserted into the insertion receiving portion of the base 50. The insertion portion 12 is clamped in the insertion receiving portion. The centering surface 13 of the front side and the clamping surface 112 of the rear side of the insertion portion 1 2 shown in Fig. 2 serve as a support. In the mounted state, the bearing surface 11 of the seat is supported on the opposite side of the base 50. The projection 15 covers the flange 5 1 of the base 50 and prevents the removed drill from wearing it. A holding portion 30 is formed on the connecting portion 35 of the base portion 1 of the holder. The connecting portion 35 may also have a truncated cone shape or an inner corner rounded shape. At a distance away from the connecting portion 3 5 end, the holding portion 30 ends on the protruding cylinder end portion 34. Two wear marks 3 4 · 1 are turned on the end portion 34, and they are centered around the hole formed in the holding portion 30 (tool receiving portion 3 1 ). The wear marks 34·1 form groove-shaped recesses which are disposed behind the bearing surface 33 at the end of the cylinder end portion 34. As shown in Fig. 3, the round shank cutter 40 having the shank portion is loaded into the cutter receiving portion 31. The round shank cutter has a cutter head 4 1 with a shank portion, and the cutter head 41 has a tip made of a hard material. The cutter head 41 is supported by the intermediate support portion of the wear protection disk 42 on the support surface 33 of the holding portion 30. It can be clearly seen from Fig. 2 that the 'holding point 30' forms a middle connecting portion 3 4 · 2 between the cylinder end portion 34 and the connecting portion 35, which is connected to the projection 15 by means of the connecting 1275697 connecting portion 20. In one. Its connecting portion 20 extends from the connecting portion 34.2 in the tool feeding direction ‘, which has a flat bridging portion 2 1 which is inclined by the slanting chip surface 22 to the side surface 19 of the projection 15 . The connecting portion 20 continuously projects in a direction toward the front end region of the projection 15. The two inclined faces 14 which laterally define the projections 15 are also outputted in this region. Thus, an arrow-shaped structure is formed by the connecting portion 20 and the inclined faces 14. The projections 15 are terminated in the end region by means of a connecting transition 16 . The inclined surface ^ 1 4 is connected to the side surface 1 9 via the chamfering transition portion 17 . The connecting portion 20 is connected to the holding portion 30 by the chamfering transition portions 18, 2 3 based on the optimum clamping and improvement of chip evacuation. [Simple diagram of the drawing], Figure 1 shows the perspective front view of the tool holder; Figure 2 shows the side view of the tool holder of Figure 1; Figure 3 shows the side view of the tool combination with the first and second figures. The seat and the base shown and the round shank mounted in the seat. [Main component symbol description] 10 Base part 11 Support surface 12 Insertion part 12.1 Clamping surface 13 Centering surface 14 Inclined surface 15 Raised -9- 1275697
16 過 渡 部 分 17 倒 角 •ίΜ m 渡 部 分 18 倒 角 過 渡 部 分 19 側 面 20 連 接 部 分 2 1 橋 接 部 分 22 排 屑 面 23 倒 角 過 渡 部 分 30 保 持 部 分 3 1 刀 具 承 接 部 分 3 3 支 承 面 3 4 缸 形 端 部 分 34.1 磨 損 標 記 34.2 中 部 連 接 部 分 3 5 連 接 部 分 40 圓 柄 刀 具 4 1 刀 頭 42 磨 損 保 護 盤 50 基 體 5 1 凸 緣 -10-16 Transition part 17 Chamfer • Μ m 渡 渡 part 18 chamfer transition part 19 side 20 connecting part 2 1 bridging part 22 chip removal surface 23 chamfering transition part 30 holding part 3 1 tool receiving part 3 3 bearing surface 3 4 cylinder End section 34.1 Wear mark 34.2 Middle connection part 3 5 Connection part 40 Round shank cutter 4 1 Bit 42 Wear protection disc 50 Base 5 1 Flange -10-